diff --git a/.credo.exs b/.credo.exs index bd8b94986..3088698f8 100644 --- a/.credo.exs +++ b/.credo.exs @@ -198,7 +198,9 @@ # and be sure to use `mix credo --strict` to see low priority checks) # {Credo.Check.Consistency.MultiAliasImportRequireUse, []}, + {Credo.Check.Consistency.ParameterPatternMatching, []}, {Credo.Check.Consistency.UnusedVariableNames, []}, + {Credo.Check.Design.AliasUsage, []}, {Credo.Check.Design.DuplicatedCode, []}, {Credo.Check.Design.SkipTestWithoutComment, []}, {Credo.Check.Readability.AliasAs, []}, @@ -214,15 +216,21 @@ {Credo.Check.Readability.Specs, []}, {Credo.Check.Readability.StrictModuleLayout, []}, {Credo.Check.Readability.WithCustomTaggedTuple, []}, + {Credo.Check.Readability.PreferImplicitTry, []}, {Credo.Check.Refactor.ABCSize, []}, {Credo.Check.Refactor.AppendSingleItem, []}, {Credo.Check.Refactor.CondInsteadOfIfElse, []}, + {Credo.Check.Refactor.CyclomaticComplexity, []}, {Credo.Check.Refactor.DoubleBooleanNegation, []}, {Credo.Check.Refactor.FilterReject, []}, + {Credo.Check.Refactor.FunctionArity, []}, {Credo.Check.Refactor.IoPuts, []}, + {Credo.Check.Refactor.LongQuoteBlocks, []}, + {Credo.Check.Refactor.MapJoin, []}, {Credo.Check.Refactor.MapMap, []}, {Credo.Check.Refactor.ModuleDependencies, []}, {Credo.Check.Refactor.NegatedIsNil, []}, + {Credo.Check.Refactor.Nesting, []}, {Credo.Check.Refactor.PassAsyncInTestCases, []}, {Credo.Check.Refactor.PipeChainStart, []}, {Credo.Check.Refactor.RejectFilter, []}, diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 374e4a1de..aa3707ae0 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -53,7 +53,6 @@ jobs: run: curl -fsSL https://raw.githubusercontent.com/DonIsaac/zlint/refs/heads/main/tasks/install.sh | bash - run: mix deps.get - - run: mix npm.get - run: npm install - name: CI run: | @@ -91,7 +90,6 @@ jobs: restore-keys: ${{ runner.os }}-ubsan-27.0-1.18- - run: mix deps.get - - run: mix npm.get - run: mix compile - name: Test run: | diff --git a/.gitignore b/.gitignore index d8ac1dc54..173e0614f 100644 --- a/.gitignore +++ b/.gitignore @@ -37,3 +37,4 @@ bun.lock # Git worktrees for parallel agent work .worktrees/ test/support/test_addon.node +fprof.trace diff --git a/.gitmodules b/.gitmodules new file mode 100644 index 000000000..44479a109 --- /dev/null +++ b/.gitmodules @@ -0,0 +1,3 @@ +[submodule "test/test262"] + path = test/test262 + url = git@github.com:tc39/test262.git diff --git a/ROADMAP.md b/ROADMAP.md new file mode 100644 index 000000000..ceffbe3b2 --- /dev/null +++ b/ROADMAP.md @@ -0,0 +1,845 @@ +# QuickBEAM Roadmap: BEAM-Native JS Execution + +## Why + +Benchmarks (April 2026, M-series Mac, Zig ReleaseSafe): + +``` +Benchmark QJS (NIF) BEAM (Elixir) Ratio +────────────────────────────────────────────────────── +sum 1M 25,274 µs 715 µs BEAM 35x faster +sum 10M 247,400 µs 7,271 µs BEAM 34x faster +fibonacci(30) 73,183 µs 2,311 µs BEAM 32x faster +arithmetic 10M 220,736 µs 45,104 µs BEAM 5x faster +``` + +BEAM's JIT-compiled tail calls beat native QuickJS by 5-35x on numeric workloads. +The question was: can we run JS on BEAM and still be fast? + +**Yes.** The key insight from measuring different interpreter architectures: + +``` +Interpreter approach µs vs Direct BEAM +────────────────────────────────────────────────────────────────── +Direct BEAM (tail-recursive) 757 1.0x +Flat fn args, one fn per opcode 3,345 4.4x +Binary bytecode + fn clause dispatch 18,868 24.9x +Binary bytecode + case dispatch 17,974 23.7x +Process Dictionary (per-variable) 15,259 20.2x +Map state (update per opcode) 40,936 54.1x +ETS table (per-variable) 64,645 85.4x +``` + +The "flat fn args" approach is **4.4x slower** than direct BEAM but still **7.5x faster +than native QuickJS**. This means a well-designed BEAM interpreter already beats +QuickJS without any JIT compilation. The JIT (compiling hot JS to BEAM bytecode) +is an optimization that closes the 4.4x gap to 1x — important but not existential. + +--- + +## Architecture + +``` +JS source + │ + ▼ +QuickJS compiler (existing, via NIF) ───► QJS bytecode binary + │ + ▼ + ┌─ Pre-decode (one-time) ─┐ + │ Binary → instruction │ + │ tuple array + atom table │ + └────────────┬────────────┘ + │ + ┌────────────────────────────┴───────────────────────┐ + │ BEAM Process │ + │ │ + │ Instruction Tuple Array │ + │ │ │ + │ ▼ │ + │ step(op, stk, locs, frefs, ...) │ + │ │ │ + │ ┌────┴────┐ │ + │ │ 187 fn │ one defp per opcode │ + │ │ clauses │ flat args, no map/tuple alloc │ + │ └────┬────┘ │ + │ │ │ + │ ▼ │ + │ JS Runtime │ + │ (only for dynamic ops: coercion, prototypes, │ + │ property chains, typeof, etc.) │ + │ │ + └────────────────────────────────────────────────────┘ +``` + +**State representation** (flat function args, zero heap allocation in hot loop): + +```elixir +# Hot-path state: all flat args, no struct/map/tuple wrapping +step(op, stk, locs, frefs, atom_tab, const_pool, ip, gas) +# op — current instruction (pre-decoded tuple, e.g. {:add, []}) +# stk — JS stack (Elixir list, prepend/pop = O(1)) +# locs — locals + args (tuple, elem/put_elem = O(1)) +# frefs — closure/var references (tuple) +# atom_tab — atom string table (tuple of binaries) +# const_pool — constant pool (tuple of pre-converted BEAM terms) +# ip — instruction pointer (integer index into instruction array) +# gas — reduction counter for BEAM scheduler cooperation +``` + +--- + +## Phase 0: Bytecode Loader + Decoder + +**Goal**: Parse QJS bytecode binary into a BEAM-friendly format. + +### 0.1 Bytecode Loader + +QuickJS `JS_WriteObject` produces a serialized binary containing: +- Header: magic bytes, version flags +- Atom table: all string atoms used in the module +- Constant pool: numbers, strings, functions, object templates +- Per-function: `JSFunctionBytecode` — args, vars, stack_size, bytecode bytes, closure vars + +QuickBEAM already has `do_compile` in `worker.zig` that produces this binary. +We reuse the existing QuickJS compiler — no need to write our own. + +Deliverables: +- `QuickBEAM.BeamVM.Bytecode` — parses QJS bytecode binary into Elixir structs + +```elixir +defmodule QuickBEAM.BeamVM.Bytecode do + @type function_id :: non_neg_integer() + + @type t :: %__MODULE__{ + atoms: tuple(), # {<<"foo">>, <<"bar">>, ...} + constants: tuple(), # {42, "hello", {:fn_ref, 3}, ...} + functions: %{function_id() => Function.t()}, + module_name: binary() + } + + @type Function :: %Function{ + id: function_id(), + name: binary(), + arg_count: non_neg_integer(), + var_count: non_neg_integer(), + stack_size: non_neg_integer(), + # Pre-decoded instructions: tuple of {opcode_atom, args} + # e.g. {{:push_i32, [42]}, {:get_loc, [0]}, {:add, []}, {:return, []}} + instructions: tuple(), + # Index maps for control flow targets (label → instruction index) + labels: %{non_neg_integer() => non_neg_integer()}, + # Closure variable descriptors + closure_vars: [ClosureVar.t()], + # Source location info (for errors/debugging) + line_number: pos_integer(), + filename: binary() + } +end +``` + +### 0.2 Opcode Decoder + +246 opcodes (187 core + 59 short-form aliases). 32 byte formats. + +**Key design decision**: decode binary bytecode to Elixir terms **once** at load time, +not on every step. The instruction array is a tuple for O(1) indexed access. + +Short-form aliases expand to their canonical form at decode time: +- `get_loc0` → `{:get_loc, [0]}` +- `push_0` → `{:push_i32, [0]}` +- `call0` → `{:call, [0]}` + +This means the interpreter only needs to handle ~187 distinct opcodes. + +Deliverables: +- `QuickBEAM.BeamVM.Decoder` — converts raw QJS bytecode bytes → instruction tuple + +```elixir +defmodule QuickBEAM.BeamVM.Decoder do + @spec decode(binary(), atoms :: tuple(), constants :: tuple()) :: + {:ok, {instructions :: tuple(), labels :: map()}} | {:error, term()} + + # Each instruction is a tuple: {opcode_atom, [args...]} + # Examples: + # {:push_i32, [42]} + # {:get_loc, [3]} + # {:add, []} + # {:if_false, [label_42]} # labels resolved to instruction indices + # {:call, [3]} # arg count + # {:get_field, [atom_index]} +end +``` + +Opcode groups (implementation priority): + +| Priority | Group | Count | Core ops | Notes | +|----------|-------|-------|----------|-------| +| 1 | Stack manipulation | 21 | ~8 | push/dup/drop/swap — trivial | +| 2 | Variables | 58 | ~6 | get_loc/put_loc/get_arg via tuple index | +| 3 | Binary ops | 43 | 20 | add/sub/lt/eq etc. — JSRuntime for coercion | +| 4 | Control flow | 10 | 4 | if_true/if_false/goto/return | +| 5 | Call/control | 24 | 8 | call/return/throw/apply | +| 6 | Property access | 16 | 10 | get_field/put_field — prototype walk | +| 7 | Iterators | ~15 | 6 | for_in/for_of/iterator_next | +| 8 | Scope/closure | 7 | 4 | make_var_ref/closure_var — boxed cells | +| 9 | Helpers | 9 | 5 | typeof/delete/is_undefined | +| 10 | Short forms | 59 | 0 | Expanded at decode time | + +**Estimated effort**: 2-3 weeks +**Lines of code**: ~3000 + +--- + +## Phase 1: Interpreter Core + +**Goal**: Run any pre-decoded JS function in a BEAM process. + +### 1.1 The `step` Function + +One `defp` per opcode. All state as flat function arguments. No struct, no map, +no ETS in the hot path. + +```elixir +defmodule QuickBEAM.BeamVM.Interpreter do + # Fetch next instruction and dispatch + defp next(stk, locs, frefs, insns, ip, gas) do + case gas do + 0 -> {:reduce, stk, locs, frefs, ip} + _ -> + {op, args} = elem(insns, ip) + step(op, args, stk, locs, frefs, insns, ip + 1, gas - 1) + end + end + + # ── Stack manipulation ── + defp step(:push_i32, [val], stk, locs, frefs, insns, ip, gas) do + next([val | stk], locs, frefs, insns, ip, gas) + end + + defp step(:drop, [], [_ | stk], locs, frefs, insns, ip, gas) do + next(stk, locs, frefs, insns, ip, gas) + end + + defp step(:dup, [], [a | _] = stk, locs, frefs, insns, ip, gas) do + next([a | stk], locs, frefs, insns, ip, gas) + end + + defp step(:swap, [], [b, a | rest], locs, frefs, insns, ip, gas) do + next([a, b | rest], locs, frefs, insns, ip, gas) + end + + # ── Variables ── + defp step(:get_loc, [idx], stk, locs, frefs, insns, ip, gas) do + next([elem(locs, idx) | stk], locs, frefs, insns, ip, gas) + end + + defp step(:put_loc, [idx], [val | stk], locs, frefs, insns, ip, gas) do + next(stk, put_elem(locs, idx, val), frefs, insns, ip, gas) + end + + defp step(:get_arg, [idx], stk, locs, frefs, insns, ip, gas) do + # args are stored in locs[0..arg_count-1] + next([elem(locs, idx) | stk], locs, frefs, insns, ip, gas) + end + + # ── Binary ops (delegate to JSRuntime for JS coercion) ── + defp step(:add, [], [b, a | rest], locs, frefs, insns, ip, gas) do + next([JSRuntime.add(a, b) | rest], locs, frefs, insns, ip, gas) + end + + defp step(:sub, [], [b, a | rest], locs, frefs, insns, ip, gas) do + next([JSRuntime.sub(a, b) | rest], locs, frefs, insns, ip, gas) + end + + # ... all 20 binary ops + + # ── Control flow ── + defp step(:if_false, [target], [val | stk], locs, frefs, insns, ip, gas) do + if val == false or val == nil do + next(stk, locs, frefs, insns, target, gas) + else + next(stk, locs, frefs, insns, ip, gas) + end + end + + defp step(:goto, [target], stk, locs, frefs, insns, _ip, gas) do + next(stk, locs, frefs, insns, target, gas) + end + + defp step(:return, [], [val | _], _locs, _frefs, _insns, _ip, _gas) do + {:return, val} + end + + # ── Property access ── + defp step(:get_field, [atom_idx], [obj | stk], locs, frefs, insns, ip, gas) do + key = elem(atoms, atom_idx) # atoms from closure, not shown here + next([JSRuntime.get_property(obj, key) | stk], locs, frefs, insns, ip, gas) + end + + # ── Calls ── + defp step(:call, [argc], stk, locs, frefs, insns, ip, gas) do + {args, [func | rest_stk]} = pop_n(stk, argc) + case JSRuntime.call_function(func, args) do + {:native_return, val} -> + next([val | rest_stk], locs, frefs, insns, ip, gas) + {:call_js, target_fref, new_locs} -> + # Recursive call into another JS function — push return address + # and re-enter the interpreter for the target + call_js(target_fref, new_locs, rest_stk, insns, ip, gas, locs, frefs) + end + end + + # ... ~170 more opcode implementations +end +``` + +### 1.2 Stack Operations + +The JS stack is an Elixir list. All operations are O(1) prepend/pop: + +```elixir +# Push: [val | stack] +# Pop: [top | rest] = stack +# Pop N: Enum.split(stack, n) → {popped, remaining} +# Peek: hd(stack) +``` + +No heap allocation for the list cells themselves in the hot path — BEAM can +reuse list cells when they're provably unreachable (generational GC young-gen +collection is effectively free for short-lived data). + +### 1.3 Locals + +Locals (including args) are a tuple. Indexed by the `loc` argument: + +```elixir +# get_loc(3) → elem(locs, 3) +# put_loc(3, val) → put_elem(locs, 3, val) +``` + +`elem/2` is a BEAM BIF that compiles to a single native instruction (array index). +`put_elem/3` allocates a new tuple but for small tuples (< 10 elements) this is +extremely cheap — just a memcpy of a few words. + +### 1.4 Reduction Counting (BEAM Scheduler Cooperation) + +BEAM preemptively reschedules processes that consume too many reductions. +The `gas` parameter decrements on every opcode. When it hits 0, the interpreter +yields and reschedules itself: + +```elixir +@default_gas 2000 # ~2000 opcodes per time slice + +def run(insns, locs, frefs, gas \\ @default_gas) + +# Entry from caller: +def call_js(fref, args, stk, insns, ip, gas, ret_locs, ret_frefs) do + fun = resolve_function(fref) + locs = build_locals(fun, args) + result = step(elem(fun.instructions, 0), stk, locs, fun.frefs, fun.instructions, 1, gas) + handle_result(result, stk, insns, ip, ret_locs, ret_frefs) +end + +defp handle_result({:return, val}, stk, insns, ip, locs, frefs) do + # Push return value and continue in calling function + next([val | stk], locs, frefs, insns, ip, @default_gas) +end + +defp handle_result({:reduce, stk, locs, frefs, ip}, ...) do + # Yield to BEAM scheduler, then resume + send(self(), {:continue, stk, locs, frefs, ip}) + # Process will be rescheduled, picks up the message, continues +end +``` + +### 1.5 Process Loop + +The interpreter runs inside a BEAM process that also handles messages +(`resolve_call`, `send_message`, etc. — same API as the current NIF-based runtime): + +```elixir +defmodule QuickBEAM.BeamVM.Context do + use GenServer + + def init(opts) do + {:ok, %{bytecode: nil, functions: %{}, globals: %{}}} + end + + def handle_call({:eval, code}, _from, state) do + # 1. Compile JS → QJS bytecode (via existing NIF, one-time) + {:ok, bytecode_binary} = QuickBEAM.compile_nif(code) + # 2. Decode into instruction tuples + {:ok, bytecode} = QuickBEAM.BeamVM.Bytecode.decode(bytecode_binary) + # 3. Run the top-level function + result = QuickBEAM.BeamVM.Interpreter.run(bytecode, 0, state) + {:reply, {:ok, result}, state} + end +end +``` + +### 1.6 Tests + +- Use existing QuickBEAM test suite (1300+ tests) as correctness target +- Compile JS with existing QuickJS NIF, decode bytecode, run on BEAM interpreter +- Compare results byte-for-byte with NIF execution + +**Estimated effort**: 3-5 weeks +**Lines of code**: ~4000 + +--- + +## Phase 2: JS Runtime Library + +**Goal**: Correct JS semantics for all dynamic operations. + +### 2.1 Value Representation + +JS values as plain BEAM terms — no wrappers in the hot path: + +```elixir +# JS values are BEAM terms. No tagged tuples for common types. +# +# JS number (integer) → BEAM integer +# JS number (float) → BEAM float +# JS boolean → BEAM boolean (true/false atoms) +# JS null/undefined → BEAM nil +# JS string → BEAM binary (UTF-8) +# JS symbol → {:js_symbol, binary()} +# JS bigint → {:js_bigint, integer()} +# JS object → {:js_obj, ref()} (ref into process-local store) +# JS array → {:js_arr, ref(), length :: integer()} +# JS function → {:js_fn, fn_ref()} +# JS undefined → nil (same as null — differentiated by context) +``` + +For the interpreter's hot path, numbers/booleans/nil are unboxed BEAM immediates. +Zero overhead for integer arithmetic — the BEAM JIT compiles `a + b` to a single +native `add` instruction when both are small integers. + +### 2.2 Object Store + +Objects live in a process-local store. Two options, benchmarked: + +**Option A: Process dictionary** (20x overhead vs direct — acceptable for property access +which is inherently dynamic): + +```elixir +# Object = {shape_ref, proto_ref, {val1, val2, ...}} +# Stored in process dictionary keyed by ref() +# Shape describes which property names are at which tuple positions +# +# get_property: walk proto chain, find property in shape → elem(values, idx) +# set_property: check shape matches, put_elem(values, idx, val) or transition shape +``` + +**Option B: Dedicated ETS table** (85x overhead — too slow for hot path, but necessary +for shared objects across linked BEAM processes): + +Use Option A for single-context objects, Option B only when crossing process boundaries. + +### 2.3 Shapes (Hidden Classes) + +V8-style hidden classes for fast property access: + +```elixir +defmodule JSRuntime.Shape do + # A shape is an immutable data structure: + # {parent_shape | nil, property_name, index, next_shapes :: %{name => shape_ref}} + # + # Empty object → shape_0 (no properties) + # obj.x = 1 → shape_1 = transition(shape_0, :x, 0) + # obj.y = 2 → shape_2 = transition(shape_1, :y, 1) + # obj.x = 3 → stays at shape_2 (property already exists) + # + # Objects with the same shape store values at the same tuple indices. + # Shape transitions are cached — most property accesses are monomorphic. +end +``` + +Shapes are stored in the process dictionary (they're shared across objects, +not per-object). Transition lookups are O(1) via the `next_shapes` map. + +### 2.4 Core Operations + +```elixir +defmodule JSRuntime do + # ── Type coercion (JS spec: ToPrimitive, ToNumber, ToString, ToBoolean) ── + + @spec add(term(), term()) :: term() + # JS + : ToPrimitive both, if either is string → concat, else numeric add + # Hot path optimization: if both are integers, just return a + b + + @spec strict_eq(term(), term()) :: boolean() + # JS === : no coercion, type + value must match + # nil !== nil is false in JS (null !== undefined), but both map to BEAM nil + # → need special handling + + @spec abstract_eq(term(), term()) :: boolean() + # JS == : complex coercion rules (the infamous == table) + + @spec get_property(term(), term()) :: term() + # 1. ToObject(receiver) + # 2. Walk prototype chain + # 3. Check property descriptor (getter? throw if not writable?) + # Hot path: if shape matches cached shape → direct elem access + + @spec set_property(term(), term(), term()) :: term() + # Similar to get but modifies the object store entry + + @spec call_function(term(), [term()]) :: term() + # JS function call with `this` = undefined (strict) or global (sloppy) + + @spec call_method(term(), term(), [term()]) :: term() + # JS obj.method() with `this` = obj + + @spec typeof(term()) :: binary() + @spec instanceof(term(), term()) :: boolean() + @spec new_object() :: term() + @spec new_array([term()]) :: term() +end +``` + +### 2.5 Built-in Objects + +Minimum viable set: +- `Object` (keys, entries, assign, freeze, defineProperty) +- `Array` (push, pop, map, filter, reduce, slice, splice, indexOf) +- `Function` (bind, call, apply) +- `String` (charAt, substring, split, indexOf, trim, slice, includes) +- `Number` (parseInt, parseFloat, isNaN, isFinite) +- `Math` (floor, ceil, round, abs, min, max, random, PI) +- `JSON` (parse, stringify) +- `Promise` (then, catch, all, race, resolve, reject) +- `Error` (+ TypeError, RangeError, SyntaxError, with stack traces) +- `Date`, `RegExp`, `Map`, `Set` + +**Estimated effort**: 6-8 weeks +**Lines of code**: ~3000 (core) + ~6000 (built-ins) = ~9000 + +--- + +## Phase 3: Integration + Testing + +**Goal**: Replace the NIF thread with a BEAM process for the `:beam` mode, +run the full test suite. + +### 3.1 Dual-Mode API + +```elixir +defmodule QuickBEAM do + def start(opts \\ []) do + mode = Keyword.get(opts, :mode, :nif) + # :nif → current GenServer + NIF thread (unchanged) + # :beam → GenServer + BEAM interpreter (new) + # :both → side-by-side for testing/comparison + case mode do + :nif -> QuickBEAM.Runtime.start_link(opts) + :beam -> QuickBEAM.BeamVM.Context.start_link(opts) + end + end + + # Same public API regardless of mode + def eval(server, code, opts \\ []) + def call(server, name, args, opts \\ []) + def compile(server, code) + def define(server, name, value) + def stop(server) +end +``` + +### 3.2 Compilation Pipeline + +```elixir +# In :beam mode, eval/2 does: +def handle_call({:eval, code}, _from, state) do + # 1. Use existing QuickJS NIF to compile JS → bytecode binary + {:ok, bytecode_binary} = QuickBEAM.Native.compile(code) + + # 2. Decode bytecode into instruction tuples + {:ok, bytecode} = QuickBEAM.BeamVM.Bytecode.decode(bytecode_binary) + + # 3. Execute on BEAM interpreter + result = QuickBEAM.BeamVM.Interpreter.run(bytecode, state) + + {:reply, {:ok, result}, update_state(state, result)} +end +``` + +This reuses the existing QuickJS compiler (battle-tested, spec-compliant). +Only the *execution* moves to BEAM. + +### 3.3 Test Strategy + +``` +1. Port existing test suite to run in :beam mode +2. Compare results between :nif and :beam for every test +3. Discrepancies → runtime library bugs +4. Target: 100% pass rate on existing 1300+ tests +``` + +### 3.4 async/await + +JS `async/await` compiles to a state machine in QJS bytecode. The interpreter +handles the `await` opcode by suspending the function and resuming when the +promise resolves: + +```elixir +defp step(:await, [], [promise | stk], locs, frefs, insns, ip, gas) do + # Return a continuation that the process loop can resume later + {:await, promise, stk, locs, frefs, insns, ip, gas} +end + +# In the process loop: +defp handle_result({:await, promise, stk, locs, frefs, insns, ip, gas}, state) do + # When promise resolves, send {:resolved, value} to self() + # and store the continuation to resume + Promise.on_resolve(promise, fn val -> + send(self(), {:resume_await, val, stk, locs, frefs, insns, ip, gas}) + end) + {:noreply, state} +end + +def handle_info({:resume_await, val, stk, locs, frefs, insns, ip, gas}, state) do + result = next([val | stk], locs, frefs, insns, ip, gas) + handle_result(result, state) +end +``` + +This is more natural on BEAM than in the NIF — the process can actually suspend +and wait for a message, which is exactly how BEAM processes work natively. + +**Estimated effort**: 3-4 weeks +**Lines of code**: ~2500 + +--- + +## Phase 4: Type Profiling (JIT Preparation) + +**Goal**: Collect type information at runtime. + +At this point we already have a working interpreter that beats QuickJS. +Phase 4-5 are optimizations that close the 4.4x gap to ~1x for hot code. + +### 4.1 Inline Caches + +```elixir +# Each call site (function_id, ip_offset) tracks: +# - observed argument types +# - observed object shapes (for property access) +# - observed call targets (for virtual calls) + +# Stored in the process dictionary (one per interpreter process) +# Key: {function_id, ip_offset} +# Value: %IC{types: [...], hits: N, cached: ...} + +defmodule QuickBEAM.BeamVM.IC do + defstruct [:types, :hits, :cached_shape, :cached_target] + + # After 1000 hits with the same type signature → function is "hot" + @hot_threshold 1000 + + def record(ic, types) do + %{ic | hits: ic.hits + 1, types: [types | ic.types |> Enum.take(9)]} + end + + def hot?(%{hits: h}), do: h >= @hot_threshold +end +``` + +### 4.2 Type Feedback Summary + +Before JIT compilation, summarize the ICs: + +```elixir +%{ + {:add, 42} => %{types: [{:int, :int}], hit_rate: 1.0}, + {:get_field, 88} => %{shape: shape_ref_123, hit_rate: 0.99}, + {:call, 156} => %{target: fn_ref_456, hit_rate: 1.0}, +} +``` + +**Estimated effort**: 2-3 weeks +**Lines of code**: ~1200 + +--- + +## Phase 5: JS Bytecode → BEAM Compiler (The JIT) + +**Goal**: Compile hot JS functions to BEAM bytecode at runtime. + +### 5.1 When Is It Worth It? + +The interpreter with flat fn args is 4.4x slower than direct BEAM. +The JIT closes this to ~1x. For a function that takes 1000µs in the interpreter, +the JIT version takes ~230µs. + +The JIT is worth it when: +- A function is called frequently (hot threshold met) +- The function has loops or is called in a loop +- Type profiles show monomorphic types (enables specialization) + +The JIT is NOT worth it when: +- A function is called once (startup/cold code) +- The function is I/O bound (network, file, database) +- Types are megamorphic (no single type dominates — guard overhead > interpreter overhead) + +### 5.2 Translation Pipeline + +``` +Pre-decoded instruction tuple + │ + ▼ +Stack depth analysis (static) + │ + ▼ +Basic blocks + control flow graph + │ + ▼ +BEAM Erlang Abstract Format + │ + ▼ +compile:forms(Forms, [binary]) → beam_bytes + │ + ▼ +code:load_binary(Module, '', beam_bytes) +``` + +Note: we target **Erlang Abstract Format** (not raw BEAM SSA). +`compile:forms/2` accepts the same format as the Erlang parser outputs, +which is much simpler to generate than raw SSA. + +### 5.3 Example Translation + +JS: `function add(a, b) { return a + b; }` + +QJS bytecode: `get_arg0, get_arg1, add, return` + +Type profile: 100% `(integer, integer)` + +Generated Erlang Abstract Format: +```erlang +[ + {attribute, 1, module, js_fn_42_v1}, + {attribute, 1, export, [{func, 2}]}, + {function, 1, func, 2, [ + {clause, 1, + [{var, 1, a}, {var, 1, b}], + [[{call, 1, {remote, 1, {atom,1,erlang},{atom,1,is_integer}}, [{var,1,a}]}, + {call, 1, {remote, 1, {atom,1,erlang},{atom,1,is_integer}}, [{var,1,b}]}]], + [{op, 1, '+', {var,1,a}, {var,1,b}}]}, + {clause, 1, + [{var, 1, a}, {var, 1, b}], + [], + [{call, 1, {remote, 1, {atom,1,js_runtime},{atom,1,add}}, [{var,1,a}, {var,1,b}]}]} + ]}, + {eof, 1} +] +``` + +This compiles to: +``` +func(A, B) -> + case is_integer(A) and is_integer(B) of + true -> A + B; %% ← raw BEAM BIF, JIT-compiles to native add + false -> js_runtime:add(A, B) %% ← fallback to runtime + end. +``` + +For a loop (`for (let i = 0; i < n; i++) sum += arr[i]`), the JIT generates +a tail-recursive BEAM function with type guards. After the BEAM JIT processes it, +it becomes a native loop — the same code as `DirectBEAM.sum` from our benchmarks. + +### 5.4 Deoptimization + +When a type guard fails, fall back to the interpreter: + +```elixir +defp deopt(function_id, ip, stk, locs, frefs, bytecode) do + # Reconstruct interpreter state from SSA values + # Resume at the same bytecode position + fun = Map.fetch!(bytecode.functions, function_id) + QuickBEAM.BeamVM.Interpreter.next(stk, locs, frefs, fun.instructions, ip, @default_gas) +end +``` + +### 5.5 Module Lifecycle + +```elixir +defmodule QuickBEAM.BeamVM.JIT do + @compile_threshold 1000 + + def maybe_compile(function_id, type_feedback, bytecode) do + if hot?(type_feedback) and monomorphic?(type_feedback) do + version = next_version(function_id) + module = :"js_fn_#{function_id}_v#{version}" + + forms = translate(bytecode.functions[function_id], type_feedback) + {:ok, ^module, beam_bytes} = :compile.forms(forms, [binary]) + :code.load_binary(module, '', beam_bytes) + + # Purge previous version + purge_old(function_id, version) + + {:ok, {module, :func}} + else + :interpret + end + end +end +``` + +**Estimated effort**: 6-8 weeks +**Lines of code**: ~4000 (translator) + ~1000 (deopt/module mgmt) = ~5000 + +--- + +## Effort Summary + +| Phase | Description | Effort | LOC | Performance | +|-------|------------|--------|-----|-------------| +| 0 | Bytecode loader + decoder | 2-3 wks | ~3,000 | — | +| 1 | Interpreter core | 3-5 wks | ~4,000 | ~4.4x vs direct BEAM, **7.5x faster than QJS** | +| 2 | JS runtime library | 6-8 wks | ~9,000 | enables all JS programs | +| 3 | Integration + testing | 3-4 wks | ~2,500 | 1300+ tests passing | +| 4 | Type profiling | 2-3 wks | ~1,200 | feeds JIT | +| 5 | JIT compiler | 6-8 wks | ~5,000 | ~1x vs direct BEAM | +| **Total** | | **22-31 wks** | **~25,000** | | + +**The interpreter (Phase 0-2, ~11-16 weeks) already beats QuickJS by 7.5x.** +Phases 3-5 are correctness and further optimization. + +--- + +## Key Risks + +1. **JS coercion semantics**: `JSRuntime.add("1", 2)` must return `"12"` and + `JSRuntime.add(1, 2)` must return `3`. The full ToPrimitive/ToNumber/ToString + chain is complex. Test exhaustively against QuickJS. + +2. **null vs undefined**: Both map to BEAM `nil`. In JS they're different + (`null == undefined` is true, `null === undefined` is false). + May need a sentinel: `{:js_undefined, nil}`. + +3. **Prototype chain performance**: Property access through deep prototype chains + is inherently O(chain_depth). Shape caching (inline caches) mitigates this for + monomorphic access patterns. + +4. **Closure mutability**: JS closures capture by reference. Use cells (boxed refs) + that the closure environment shares. Works but adds indirection. + +5. **Circular references**: BEAM GC doesn't handle cycles in process dictionary + stored objects. Need periodic cycle detection or manual refcounting for the + object store. + +6. **Atom table growth**: Dynamic module names (`js_fn_42_v1`, `js_fn_42_v2`, ...) + create atoms that are never garbage collected. Cap the version count and reuse + module names. + +## Not In Scope + +- Full test262 compliance (target: common real-world JS) +- Web APIs (DOM, fetch) — stay in NIF runtime +- Source-level debugging +- WASM (already in QuickBEAM via separate path) +- Bytecode loader replaces QuickJS execution engine only; the compiler stays as-is diff --git a/autoresearch.checks.sh b/autoresearch.checks.sh new file mode 100755 index 000000000..762f114e1 --- /dev/null +++ b/autoresearch.checks.sh @@ -0,0 +1,12 @@ +#!/usr/bin/env bash +set -euo pipefail + +mix compile --warnings-as-errors >/tmp/quickbeam-autoresearch-compile.log 2>&1 || { + tail -80 /tmp/quickbeam-autoresearch-compile.log + exit 1 +} + +mix test test/web_apis >/tmp/quickbeam-autoresearch-web-apis.log 2>&1 || { + tail -80 /tmp/quickbeam-autoresearch-web-apis.log + exit 1 +} diff --git a/autoresearch.ideas.md b/autoresearch.ideas.md new file mode 100644 index 000000000..5194038c3 --- /dev/null +++ b/autoresearch.ideas.md @@ -0,0 +1,8 @@ +- Remaining parity clusters in later script audit windows: + - strict function/arrow body early errors: `"use strict"` with non-simple params, nested strict function declarations with reserved bindings + - async/generator strict-context errors for `await`/`yield` identifiers in async/generator functions and class methods + - direct assignment target edge cases for arrow/yield/parenthesized object expressions + - destructuring assignment rest/nested invalid target edge cases + - precise class field initializer early errors for `arguments`/`super` +- Expand the NIF-vs-BEAM parser audit harness into a checked script or Mix task that compares acceptance across script and module inputs without relying on Test262 raw flags incorrectly. +- Revisit Token struct allocation/performance ideas after parity work: compact token representation, avoiding per-token lexer state map updates, and parser hot-path profiling. diff --git a/autoresearch.jsonl b/autoresearch.jsonl new file mode 100644 index 000000000..ca966f6a4 --- /dev/null +++ b/autoresearch.jsonl @@ -0,0 +1,441 @@ +{"type":"config","name":"Expand QuickJS-compatible JavaScript parser coverage","metricName":"quickjs_parser_tests","metricUnit":"","bestDirection":"higher"} +{"run":1,"commit":"93d8357","metric":7,"metrics":{"parser_tests":0,"parser_test_ms":100},"status":"keep","description":"Baseline JS parser autoresearch coverage","timestamp":1777198136907,"segment":0,"confidence":null,"iterationTokens":90,"asi":{"hypothesis":"Baseline captures current QuickJS-port parser test coverage before new parser experiments.","note":"parser_tests secondary metric parsed as 0 due autoresearch.sh summary extraction bug; fix script in next experiment before interpreting that secondary metric."}} +{"run":2,"commit":"80911bc","metric":10,"metrics":{"parser_tests":12,"parser_test_ms":90},"status":"keep","description":"Port QuickJS numeric separator parser coverage","timestamp":1777198267522,"segment":0,"confidence":null,"iterationTokens":4456,"asi":{"hypothesis":"Adding numeric separator lexing and tests for QuickJS number literal cases should increase parser coverage while preserving existing behavior.","learned":"Lexer needed underscore-aware digit scanning and explicit legacy-leading-zero separator validation. Fixed autoresearch.sh parser_tests metric extraction in the same kept experiment.","quickjs_cases":"Covers valid 1_0 and invalid 0_0, 00_0, 01_0, 08_0, 09_0 from test_number_literals."}} +{"run":3,"commit":"a3c9417","metric":12,"metrics":{"parser_tests":13,"parser_test_ms":100},"status":"keep","description":"Port QuickJS regexp literal skip coverage","timestamp":1777198357453,"segment":0,"confidence":2.5,"iterationTokens":2883,"asi":{"hypothesis":"Adding lexer regexp-goal tracking and regexp literal AST support should parse QuickJS regexp-skip cases where `/` follows assignment operators.","learned":"A minimal previous-token regexp_allowed? heuristic is enough for current parser coverage; future work must refine lexical goals for division-heavy expressions.","quickjs_cases":"Ports test_regexp_skip forms `[a, b = /abc\\(/] = [1]` and `[a, b =/abc\\(/] = [2]`."}} +{"run":4,"commit":"2f289f7","metric":15,"metrics":{"parser_tests":15,"parser_test_ms":100},"status":"keep","description":"Port QuickJS template literal coverage","timestamp":1777198476111,"segment":0,"confidence":3.2,"iterationTokens":2931,"asi":{"hypothesis":"Adding whole-template tokenization and tagged-template postfix parsing should cover QuickJS template parser skip cases without full template AST semantics yet.","learned":"A scanner that skips nested `${...}` and nested backtick templates is enough for parser-level coverage of current QuickJS template tests; future semantic lowering will need real quasis/expressions.","quickjs_cases":"Ports test_template plain/tagged template examples and test_template_skip nested template example."}} +{"run":5,"commit":"1eb7ddd","metric":18,"metrics":{"parser_tests":17,"parser_test_ms":100},"status":"keep","description":"Port QuickJS array destructuring coverage","timestamp":1777198604235,"segment":0,"confidence":3.6666666666666665,"iterationTokens":5866,"asi":{"hypothesis":"Adding array binding pattern AST support should cover QuickJS destructuring declaration syntax and prepare for arrow/function parameter patterns.","learned":"Parser declarations now branch through parse_binding_pattern; array patterns support holes, defaults, and rest elements without affecting array expression parsing.","quickjs_cases":"Ports test_destructuring `function * g () { return 0; }; var [x] = g();` and adds adjacent default/rest binding syntax coverage."}} +{"run":6,"commit":"6d48102","metric":20,"metrics":{"parser_tests":18,"parser_test_ms":200},"status":"keep","description":"Port QuickJS arrow parameter syntax coverage","timestamp":1777198692934,"segment":0,"confidence":3.25,"iterationTokens":3356,"asi":{"hypothesis":"Adding parenthesized arrow-parameter detection plus object patterns and parameter defaults should cover QuickJS function-length syntax forms without implementing function length semantics.","learned":"A token scan for matching paren followed by `=>` cleanly distinguishes parenthesized arrow params from grouping for current coverage. Formal params now reuse binding patterns and assignment patterns.","quickjs_cases":"Ports syntax shape from test_function_length: `(a,b=1,c)=>{}`, `([a,b])=>{}`, `({a,b})=>{}`, `(c,[a,b]=1,d)=>{}`."}} +{"run":7,"commit":"d3e8b63","metric":22,"metrics":{"parser_tests":19,"parser_test_ms":100},"status":"keep","description":"Port QuickJS private field parse coverage","timestamp":1777198777856,"segment":0,"confidence":3,"iterationTokens":3111,"asi":{"hypothesis":"Adding minimal class body parsing and private identifiers should cover QuickJS parser regression where division after a private field must not be lexed as regexp.","learned":"Existing regexp_allowed? heuristic already treats identifier before slash as division context; adding `#` punctuator plus private member parsing lets the regression be expressed in parser tests.","quickjs_cases":"Ports syntax from test_op1 class Q private field division case: `class Q { #x = 10; f() { return (this.#x / 2); } }`."}} +{"run":8,"commit":"8c8b9e3","metric":23,"metrics":{"parser_tests":20,"parser_test_ms":100},"status":"keep","description":"Port QuickJS new expression call chain coverage","timestamp":1777198907454,"segment":0,"confidence":3.2,"iterationTokens":4070,"asi":{"hypothesis":"Adding `new` expression parsing should let parser tests represent the full QuickJS private-field regression assertion shape rather than only the class body.","learned":"Prefix `new` parsing composes with existing postfix call/member parsing, producing `new Q().f()` as a NewExpression wrapped by member/call nodes.","quickjs_cases":"Extends private-field regression coverage with `assert(new Q().f(), 5);` call-chain syntax."}} +{"run":9,"commit":"98cb855","metric":25,"metrics":{"parser_tests":21,"parser_test_ms":100},"status":"keep","description":"Port QuickJS try catch parser coverage","timestamp":1777199024327,"segment":0,"confidence":3.6,"iterationTokens":5956,"asi":{"hypothesis":"Adding try/catch/finally statement parsing should cover QuickJS constructor/delete parser shapes and enable more syntax-test ports.","learned":"TryStatement can reuse existing block and binding-pattern parsing; optional catch binding and finally block compose without touching expression parser.","quickjs_cases":"Ports try/catch forms used by test_constructor and test_delete: `try { new G() } catch (ex_) { ... }` and catch/finally syntax."}} +{"run":10,"commit":"68e74dd","metric":27,"metrics":{"parser_tests":22,"parser_test_ms":200},"status":"keep","description":"Port QuickJS switch parser coverage","timestamp":1777199129763,"segment":0,"confidence":4,"iterationTokens":2516,"asi":{"hypothesis":"Adding switch/case/default statement parsing should cover QuickJS assert_throws helper syntax and broaden statement parser coverage.","learned":"Switch consequent parsing needs a statement-list variant that stops at `case`, `default`, or `}`; existing statement parser can otherwise be reused.","quickjs_cases":"Ports assert_throws switch over `typeof func` with `case 'string'`, `case 'function'`, default, and break statements."}} +{"run":11,"commit":"a8c1c59","metric":29,"metrics":{"parser_tests":23,"parser_test_ms":200},"status":"keep","description":"Port QuickJS optional chaining parser coverage","timestamp":1777199272589,"segment":0,"confidence":4.4,"iterationTokens":3108,"asi":{"hypothesis":"Adding optional chaining postfix parsing should cover QuickJS optional-chaining syntactic forms and expose unary/postfix precedence issues.","learned":"Lexer needs `?.` punctuator. Unary parsing must let postfix tails bind to its operand so `delete a?.b` becomes delete of the optional member expression rather than optional member of `(delete a)`.","quickjs_cases":"Ports optional chaining syntax forms `a?.b`, `a?.b()`, `a?.[\"b\"]()`, and `delete a?.b[\"c\"]`."}} +{"run":12,"commit":"2b548f0","metric":32,"metrics":{"parser_tests":25,"parser_test_ms":400},"status":"keep","description":"Port QuickJS throw statement parser coverage","timestamp":1777199368410,"segment":0,"confidence":4.166666666666667,"iterationTokens":1739,"asi":{"hypothesis":"Adding throw statement parsing and its line-terminator restricted production should cover QuickJS assert helper syntax and an important ASI rule.","learned":"Throw is a statement, not a prefix expression; parser now emits a dedicated ThrowStatement and reports a targeted error when a line terminator follows `throw`.","quickjs_cases":"Ports assert helper `throw Error(...)` syntax and QuickJS syntax coverage for throw line-terminator errors."}} +{"run":13,"commit":"206ea65","metric":34,"metrics":{"parser_tests":26,"parser_test_ms":200},"status":"keep","description":"Port QuickJS sequence expression parser coverage","timestamp":1777199438230,"segment":0,"confidence":3.857142857142857,"iterationTokens":1560,"asi":{"hypothesis":"Representing comma operators as SequenceExpression should improve AST fidelity for QuickJS template and expression syntax coverage.","learned":"The existing Pratt comma precedence could be preserved; only binary node construction needed special handling to flatten comma chains.","quickjs_cases":"Ports comma sequence syntax used by test_template expression `${a, b}` via direct parser coverage of `(a, b, c)`."}} +{"run":14,"commit":"5799e25","metric":37,"metrics":{"parser_tests":28,"parser_test_ms":200},"status":"keep","description":"Port QuickJS class feature parser coverage","timestamp":1777199545901,"segment":0,"confidence":4.285714285714286,"iterationTokens":4146,"asi":{"hypothesis":"Enhancing class parsing for static modifiers, accessors, extends, and class expressions should cover a substantial QuickJS class syntax slice without changing runtime semantics.","learned":"`static()` must remain a method named static, while `static F()` and `static x = ...` use a modifier; accessor parsing reuses class key/formal parameter/block helpers.","quickjs_cases":"Ports test_class syntax for static methods, getters, extends, super member calls, static fields, and `var E1 = class E { ... }` class expressions."}} +{"run":15,"commit":"cd673c1","metric":39,"metrics":{"parser_tests":29,"parser_test_ms":200},"status":"keep","description":"Port QuickJS argument-scope parser coverage","timestamp":1777199619131,"segment":0,"confidence":4,"iterationTokens":2494,"asi":{"hypothesis":"Existing function/arrow/default-parameter support should be validated against QuickJS argument-scope syntax, and autoresearch notes should be refreshed to avoid repeating completed candidates.","learned":"Current parser already handles the argument-scope syntax slice after prior arrow/default/class work; added non-redundant regression coverage and updated autoresearch.md with completed areas and next candidates.","quickjs_cases":"Ports test_argument_scope syntax forms with function default parameters, arrow defaults, eval calls, named function expressions, and nested arrow default parameters."}} +{"run":16,"commit":"9a8a2cb","metric":42,"metrics":{"parser_tests":31,"parser_test_ms":200},"status":"keep","description":"Port QuickJS reserved binding name coverage","timestamp":1777199723301,"segment":0,"confidence":4.117647058823529,"iterationTokens":1639,"asi":{"hypothesis":"Classifying future reserved words as keywords and tightening binding identifier acceptance should cover QuickJS reserved-name parser errors while preserving await contextual binding allowance.","learned":"Adding implements/interface/package/private/protected/public to keyword lexing makes declaration binding validation catch them uniformly; `await` remains a contextual binding name in script-mode parser coverage.","quickjs_cases":"Ports test_reserved_names coverage for yield, implements, interface, let, package, private, protected, public, static as invalid var bindings and await as allowed."}} +{"run":17,"commit":"83d6957","metric":44,"metrics":{"parser_tests":32,"parser_test_ms":200},"status":"keep","description":"Port QuickJS template destructuring parser coverage","timestamp":1777199834674,"segment":0,"confidence":4.111111111111111,"iterationTokens":5549,"asi":{"hypothesis":"Exact QuickJS template-skip destructuring declaration should now be representable by the combined object-pattern and nested-template parser support; adding regression coverage verifies the composition.","learned":"No parser change was needed: object binding default initializers compose with whole-template tokenization and object expression initializers.","quickjs_cases":"Ports exact shape from test_template_skip: `var { b = `${a + `a${a}` }baz` } = {};`."}} +{"run":18,"commit":"df36b02","metric":46,"metrics":{"parser_tests":33,"parser_test_ms":200},"status":"keep","description":"Port QuickJS function expression name parser coverage","timestamp":1777199895393,"segment":0,"confidence":4.105263157894737,"iterationTokens":1299,"asi":{"hypothesis":"Existing function expression and parenthesized callee parsing should cover QuickJS function-expression-name and IIFE syntax; adding tests verifies composition without parser changes.","learned":"FunctionExpression IDs, parenthesized function expressions, and parenthesized arrow functions already compose with postfix call parsing.","quickjs_cases":"Ports representative syntax from test_function_expr_name: named function expression assignment plus function and arrow IIFEs."}} +{"run":19,"commit":"29fc99d","metric":48,"metrics":{"parser_tests":34,"parser_test_ms":200},"status":"keep","description":"Port QuickJS super call parser coverage","timestamp":1777199963798,"segment":0,"confidence":4.1,"iterationTokens":1486,"asi":{"hypothesis":"Existing class and call/member parsing should cover super constructor calls and super member calls from QuickJS class tests; adding explicit coverage guards that composition.","learned":"No parser changes needed: `super` is represented as an Identifier and composes with CallExpression and MemberExpression nodes inside class methods.","quickjs_cases":"Ports class D syntax from test_class: `super(); this.z = 20;`, `return super.f();`, and `return super[\"F\"]();`."}} +{"run":20,"commit":"ce2981c","metric":50,"metrics":{"parser_tests":35,"parser_test_ms":200},"status":"keep","description":"Port QuickJS prototype parser coverage","timestamp":1777200026858,"segment":0,"confidence":4.095238095238095,"iterationTokens":1161,"asi":{"hypothesis":"Existing member-call and object-literal parsing should cover QuickJS prototype descriptor syntax; adding coverage prevents regressions in nested member chains and object literal booleans.","learned":"No parser change needed: nested member expressions, CallExpression arguments, FunctionExpression initializers, and boolean object properties compose correctly.","quickjs_cases":"Ports representative test_prototype syntax: `Object.defineProperty(g, \"prototype\", { writable: false })` and `f.prototype.constructor` assertion call."}} +{"run":21,"commit":"d3aa185","metric":52,"metrics":{"parser_tests":36,"parser_test_ms":300},"status":"keep","description":"Port QuickJS-compatible for loop coverage","timestamp":1777200126392,"segment":0,"confidence":4.090909090909091,"iterationTokens":3649,"asi":{"hypothesis":"Adding for/for-in/for-of parsing broadens statement support needed for JavaScript/QuickJS compatibility without changing runtime behavior.","learned":"Classic for loops can reuse expression parsing, but for-in/of needs a small no-in fast path for simple identifiers before parsing the initializer as a binary `in` expression.","quickjs_cases":"Adds QuickJS-compatible parser coverage for `for (var i=...; 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} }` and `class C extends B { method() { super(); } }`."}} +{"run":366,"commit":"a4e5c19","metric":738,"metrics":{"parser_tests":407,"parser_test_ms":700},"status":"keep","description":"Port class element super call diagnostics","timestamp":1777283427442,"segment":0,"confidence":4.3,"iterationTokens":1533,"asi":{"hypothesis":"Direct `super()` calls should also be rejected from class static blocks and field initializers, not only ordinary methods.","learned":"Class super-call validation now checks static block statement bodies and field initializer expressions for direct `super()` calls.","quickjs_cases":"Adds QuickJS-compatible diagnostics for `class C extends B { static { super(); } }` and `class C extends B { field = super(); }`."}} +{"run":367,"commit":"b6aceb9","metric":741,"metrics":{"parser_tests":409,"parser_test_ms":700},"status":"keep","description":"Port duplicate private name diagnostics","timestamp":1777283534919,"segment":0,"confidence":4.317647058823529,"iterationTokens":3010,"asi":{"hypothesis":"Class private names should be unique, except for the standard getter/setter pair shape.","learned":"Class validation now collects private field/method/accessor names and reports `duplicate private name` for duplicate field/method declarations while allowing complementary private accessor pairs.","quickjs_cases":"Adds QuickJS-compatible diagnostics for `class C { #value; #value; }` and `class C { #value() {} #value() {} }`."}} +{"run":368,"commit":"600d7dc","metric":744,"metrics":{"parser_tests":411,"parser_test_ms":700},"status":"keep","description":"Port private accessor duplicate diagnostics","timestamp":1777284427499,"segment":0,"confidence":4.309941520467836,"iterationTokens":2267,"asi":{"hypothesis":"Private accessors should reject duplicate getters or duplicate setters but allow a complementary getter/setter pair.","learned":"Existing private-name validation already handles accessor-kind uniqueness correctly: duplicate private getters are rejected, while get/set pairs parse successfully.","quickjs_cases":"Adds QuickJS-compatible coverage for `class C { get #value() {} get #value() {} }` and `class C { get #value() {} set #value(value) {} }`."}} +{"run":369,"commit":"38624c7","metric":747,"metrics":{"parser_tests":413,"parser_test_ms":700},"status":"keep","description":"Port undeclared private name diagnostics","timestamp":1777284586226,"segment":0,"confidence":4.3023255813953485,"iterationTokens":7678,"asi":{"hypothesis":"Private names used inside a class should be declared by that class before the parser accepts the class without diagnostics.","learned":"Class validation now collects declared private names from fields/methods/accessors and scans field initializers, methods, and static blocks for undeclared private identifiers. Existing private accessor syntax tests now declare their backing private slot explicitly.","quickjs_cases":"Adds QuickJS-compatible diagnostics for `this.#missing` and `#missing in this` inside class methods."}} +{"run":370,"commit":"2032ff3","metric":750,"metrics":{"parser_tests":415,"parser_test_ms":1000},"status":"checks_failed","description":"Port private name outside class diagnostics","timestamp":1777284671877,"segment":0,"confidence":4.3023255813953485,"iterationTokens":1620,"asi":{"hypothesis":"Private identifiers outside any class body should be diagnosed as undeclared private names.","rollback_reason":"Backpressure failed in known unrelated Process.monitor flake while parser tests passed.","next_action_hint":"Re-add the private-name outside class validation and tests, then rerun; keep only if checks pass.","quickjs_cases":"Attempted QuickJS-compatible diagnostics for `object.#missing;` and `#missing in object;`."}} +{"run":371,"commit":"8a68159","metric":750,"metrics":{"parser_tests":415,"parser_test_ms":900},"status":"keep","description":"Port private name outside class diagnostics","timestamp":1777284751008,"segment":0,"confidence":4.319767441860465,"iterationTokens":1838,"asi":{"hypothesis":"Private identifiers outside any class body should be diagnosed as undeclared private names.","learned":"Declared-private-name validation now treats non-class program statements as having an empty private-name environment, so member/private-in expressions outside classes report `undeclared private name`.","quickjs_cases":"Adds QuickJS-compatible diagnostics for `object.#missing;` and `#missing in object;` after retrying a transient web API flake."}} +{"run":372,"commit":"a3f0a9a","metric":753,"metrics":{"parser_tests":417,"parser_test_ms":700},"status":"keep","description":"Port block lexical var conflict diagnostics","timestamp":1777284852222,"segment":0,"confidence":4.337209302325581,"iterationTokens":2302,"asi":{"hypothesis":"Lexical declarations should conflict with var declarations within block/function-body validation, not only at the program top level.","learned":"Block parsing now reuses lexical-vs-var conflict validation and the older duplicate-only helper was removed, preserving duplicate lexical diagnostics while adding block var conflicts.","quickjs_cases":"Adds QuickJS-compatible diagnostics for `{ let value; 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If revisiting, only cache current_token and maybe next_token, or instead reduce repeated current/peek calls locally in hot helpers without mutating parser state on every advance.","profiling_context":"Before this experiment, remaining eprof hot spots were normal dispatch: Parser.current/token_at/match_value?/keyword? and Lexer.peek/current/scan_identifier_parts."}} +{"run":378,"commit":"3e47778","metric":4409,"metrics":{"class_private_parser_us":47,"function_control_parser_us":48,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":900},"status":"discard","description":"Try local parser token helper simplification","timestamp":1777286928315,"segment":1,"confidence":1.5208333333333333,"iterationTokens":2936,"asi":{"hypothesis":"Reducing repeated current/peek helper work locally, without cached parser state, could improve hot keyword?/peek_value? dispatch.","result":"No primary improvement: test_language_parser_us=4409, worse than the 4313 kept best and slightly worse than the segment baseline; small snippets improved but primary regressed.","rollback_reason":"The pattern-matching keyword?/2 and peek_value clauses did not improve the large-file primary benchmark; likely noise or extra function clause dispatch offsets savings.","next_action_hint":"Avoid micro-optimizing Parser.current/keyword? helpers without a profiler-backed targeted call-site change. Focus next on bigger structural work such as collapsing validation passes or optimizing lexer current/peek."}} +{"run":379,"commit":"2a37f29","metric":4212,"metrics":{"class_private_parser_us":44,"function_control_parser_us":43,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":800},"status":"keep","description":"Fast-path ASCII lexer codepoint reads","timestamp":1777287064605,"segment":1,"confidence":2.3835616438356166,"iterationTokens":2628,"asi":{"hypothesis":"eprof showed Lexer.peek/current still hot; most JavaScript source is ASCII, so avoiding binary_part UTF-8 pattern matching for ASCII codepoints should improve scanner throughput.","changes":"Replaced current/peek implementation with codepoint_at/3 using :binary.at for an ASCII fast path and falling back to binary_part UTF-8 decoding only for non-ASCII bytes.","benchmark_after":"test_language_parser_us=4212, improving over the kept best 4313; class_private_parser_us=44 and function_control_parser_us=43 also improved materially; parser tests and backpressure checks passed.","prior_dead_end":"Cached parser lookahead tokens and local keyword?/peek_value helper changes both regressed or failed to improve the primary benchmark and were discarded.","next_action_hint":"Re-profile after this keep; remaining likely wins are further scanner ASCII fast paths or reducing validation passes, not parser-state lookahead caching."}} +{"run":380,"commit":"d6aec78","metric":4019,"metrics":{"class_private_parser_us":39,"function_control_parser_us":43,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":900},"status":"keep","description":"Reduce lexer current calls in hot loops","timestamp":1777287333543,"segment":1,"confidence":3.7258883248730963,"iterationTokens":6761,"asi":{"hypothesis":"eprof after ASCII codepoint fast path still showed Lexer.current/peek/codepoint_at/advance and scan_identifier_parts hot; reducing repeated current calls and making ASCII advance cheaper should improve throughput.","profile_before":"Recent eprof tail showed codepoint_at 10.4%, binary:at 6.9%, Lexer.advance 5.7%, Lexer.current 5.1%, scan_identifier_parts 5.0%, plus line_terminator?/utf8_size costs.","changes":"scan_identifier_parts/2 now reads the current codepoint once and uses a direct backslash/u check; advance/1 now uses :binary.at and direct ASCII/newline branches before falling back to UTF-8 codepoint decoding.","benchmark_after":"test_language_parser_us=4019, improving over kept best 4212; class_private_parser_us=39 and function_control_parser_us=43; parser tests and backpressure checks passed.","next_action_hint":"Continue with scanner hot paths. skip_trivia still uses multiple current/starts_with calls and likely can be rewritten around a single byte read/pattern match."}} +{"run":381,"commit":"0e8dde7","metric":3415,"metrics":{"class_private_parser_us":36,"function_control_parser_us":43,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":800},"status":"keep","description":"Fast-path lexer trivia scanning","timestamp":1777287499233,"segment":1,"confidence":9.613861386138614,"iterationTokens":3403,"asi":{"hypothesis":"eprof and previous ASI pointed at skip_trivia as a remaining scanner hot path; rewriting it around one byte read instead of repeated current/starts_with calls should reduce lexer overhead.","changes":"skip_trivia/1 now exits on offset/length, reads the current byte once with :binary.at, branches directly for ASCII whitespace/newlines/hashbang/comments, and uses byte_at/3 for one-byte lookahead. 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Further gains may come from reducing parser validation traversals or optimizing identifier scanning/keyword lookup."}} +{"run":382,"commit":"fef1f75","metric":3973,"metrics":{"class_private_parser_us":43,"function_control_parser_us":42,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":900},"status":"discard","description":"Try guard-based lexer character predicates","timestamp":1777287684887,"segment":1,"confidence":4.97948717948718,"iterationTokens":5406,"asi":{"hypothesis":"Replacing `in` range/list predicates in lexer identifier/hex/line-terminator checks with guard-style comparisons would reduce Enum predicate overhead seen in eprof.","result":"No improvement over current kept best: test_language_parser_us=3973 versus best 3415; small manual run was noisy, but confirmed benchmark did not improve primary.","rollback_reason":"Predicate micro-optimization did not improve the primary parser benchmark and worsened class_private from kept best 36 to 43.","next_action_hint":"Do not pursue isolated predicate rewrites. Continue with larger hotspots: parser current/token_at/match_value or validation pass collapse, and benchmark with run_experiment rather than one-off noisy runs."}} +{"run":383,"commit":"17c0a01","metric":3353,"metrics":{"class_private_parser_us":35,"function_control_parser_us":38,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":900},"status":"keep","description":"Replace lexer prefix checks with byte lookahead","timestamp":1777287856347,"segment":1,"confidence":5.243654822335025,"iterationTokens":4437,"asi":{"hypothesis":"After trivia fast paths, remaining eprof still showed lexer starts_with?/String.starts_with? overhead; replacing remaining lexer prefix tests with byte lookahead should reduce scanning overhead.","changes":"Removed lexer starts_with?/2 and replaced unicode escape, number prefix, block-comment terminator, CRLF, and token-start unicode checks with direct byte_at/3 or peek/2 comparisons.","benchmark_after":"test_language_parser_us=3353, improving over kept best 3415; class_private_parser_us=35; function_control_parser_us=38; parser suite and backpressure checks passed.","profile_context":"Previous profile showed starts_with? still around 1.6% plus String.starts_with? callers. This removes the lexer helper entirely.","next_action_hint":"Re-profile. Remaining large items are parser current/token_at/match_value/keyword and identifier scanning; consider targeted parser call-site reductions or validation-pass consolidation."}} +{"run":384,"commit":"47ae670","metric":3220,"metrics":{"class_private_parser_us":30,"function_control_parser_us":35,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":600},"status":"keep","description":"Fast-path raw identifier scanning","timestamp":1777288032784,"segment":1,"confidence":4.134751773049645,"iterationTokens":5337,"asi":{"hypothesis":"Identifier scanning remained hot because every identifier built an iolist of per-codepoint binaries; most identifiers contain only raw ASCII and can be sliced directly.","changes":"scan_identifier/1 now scans raw ASCII identifier bytes with advance_identifier_raw/1, slices the original source as the identifier value when no unicode escape appears, and only falls back to the existing escaped/codepoint path when `\\u` is encountered. Added ascii_identifier_part?/1 for the byte loop.","benchmark_after":"test_language_parser_us=3220, improving over kept best 3353; class_private_parser_us=30 and function_control_parser_us=35; parser suite and backpressure checks passed.","profile_context":"Previous eprof showed scan_identifier/1, scan_identifier_parts/2, identifier_start?/part?, iolist_to_binary, and reverse still visible after trivia/prefix fast paths.","next_action_hint":"Re-profile; remaining gains may come from parser current/match_value or validation pass consolidation. Be cautious with character predicate rewrites: previous guard-based broad rewrite was discarded."}} +{"run":385,"commit":"3e01ff6","metric":3263,"metrics":{"class_private_parser_us":30,"function_control_parser_us":35,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":600},"status":"discard","description":"Try inlining ASCII identifier predicate","timestamp":1777288141786,"segment":1,"confidence":2.98974358974359,"iterationTokens":3504,"asi":{"hypothesis":"Inlining ascii_identifier_part?/1 inside the raw identifier scan loop would reduce a hot function call shown in eprof.","result":"No primary improvement: test_language_parser_us=3263 versus kept best 3220. Secondary metrics were unchanged from the best kept raw identifier scan.","rollback_reason":"The micro-optimization did not beat the current best; function-call savings were within benchmark noise or offset by larger generated code/branching.","next_action_hint":"Avoid smaller predicate tweaks. Move to parser current/token_at/match_value reductions or validation pass consolidation."}} +{"run":386,"commit":"d778323","metric":3265,"metrics":{"class_private_parser_us":31,"function_control_parser_us":35,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":600},"status":"discard","description":"Try inlining parser and lexer hot helpers","timestamp":1777288262144,"segment":1,"confidence":2.346076458752515,"iterationTokens":2007,"asi":{"hypothesis":"Inlining hot private helpers reported by eprof, including parser current/token_at/match_value and lexer current/peek/codepoint_at, could reduce function call overhead without semantic changes.","result":"No primary improvement: test_language_parser_us=3265 versus kept best 3220. Secondary metrics also slightly worse for class_private.","rollback_reason":"BEAM inlining did not beat the existing compiled code for the primary benchmark; increased code size or optimizer behavior likely offset call savings.","next_action_hint":"Avoid broad @compile inline for this parser. Focus on algorithmic reductions such as validation pass consolidation or specific scanner loops with clear eprof evidence."}} +{"run":387,"commit":"a571b60","metric":2974,"metrics":{"class_private_parser_us":27,"function_control_parser_us":33,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":600},"status":"keep","description":"Dispatch statements from current token","timestamp":1777288400275,"segment":1,"confidence":2.5304659498207887,"iterationTokens":4394,"asi":{"hypothesis":"Parser keyword?/match_value? and current/token_at remain hot; parse_statement/1 repeatedly checks the same current token against many keywords and punctuators, so dispatching once on current token should reduce helper calls.","changes":"Rewrote parse_statement/1 to case on current(state) once, dispatching keyword and punctuation statements directly. Preserved async function declaration handling and label fallback.","benchmark_after":"test_language_parser_us=2974, improving over kept best 3220; class_private_parser_us=27; function_control_parser_us=33; parser tests and backpressure checks passed.","profile_context":"Previous eprof showed parser current/token_at, keyword?/2, and match_value?/2 together among the largest remaining costs.","next_action_hint":"Look for similar repeated current-token checks in parse_prefix/parse_class_element/import parsing, or begin consolidating validation passes."}} +{"run":388,"commit":"5135614","metric":3455,"metrics":{"class_private_parser_us":28,"function_control_parser_us":33,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":800},"status":"discard","description":"Try current-token parse_prefix dispatch","timestamp":1777288629473,"segment":1,"confidence":2.9883597883597885,"iterationTokens":9565,"asi":{"hypothesis":"parse_prefix/1 was a visible eprof hotspot and repeatedly used match_value?/keyword? against the same current token; a single current-token case dispatch might reduce parser helper overhead as parse_statement/1 did.","result":"Regression: test_language_parser_us=3455 versus kept best 2974/3220; although small class/function snippets stayed good, primary large-file benchmark worsened.","rollback_reason":"The larger case dispatch and additional helper functions did not help the primary benchmark, likely because parse_prefix hot cost is in recursive expression parsing/postfix handling rather than repeated current-token tests alone.","next_action_hint":"Do not rewrite parse_prefix wholesale. If optimizing expressions, target parse_postfix_tail/parse_binary_tail or validation passes with profiler evidence."}} +{"run":389,"commit":"9c746a1","metric":3295,"metrics":{"class_private_parser_us":34,"function_control_parser_us":40,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":900},"status":"discard","description":"Try current-token postfix dispatch","timestamp":1777289157430,"segment":1,"confidence":2.9355509355509355,"iterationTokens":5306,"asi":{"hypothesis":"parse_postfix_tail/2 remained visible in eprof and used several match_value?/current calls; dispatching once on the current token could reduce expression parsing overhead.","result":"Regression versus kept best: test_language_parser_us=3295 vs 2974, with secondary snippets also worse than best. Parser tests and checks passed.","rollback_reason":"The single case dispatch did not improve the primary benchmark; as with parse_prefix, expression parsing overhead appears elsewhere or the rewrite worsens branch/layout behavior.","next_action_hint":"Avoid broad expression dispatch rewrites. Focus on validation pass consolidation or more targeted parser current/match_value reductions where call count is provably high."}} +{"run":390,"commit":"f889248","metric":2985,"metrics":{"class_private_parser_us":28,"function_control_parser_us":33,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":700},"status":"discard","description":"Try statement terminator current-token checks","timestamp":1777289368093,"segment":1,"confidence":3.0998902305159164,"iterationTokens":5306,"asi":{"hypothesis":"parse_statement_list/2, consume_semicolon/1, and statement_end?/1 perform repeated eof?/match_value?/current calls on common statement boundaries; using one current token should shave parser helper overhead.","result":"No primary improvement versus kept best 2974: test_language_parser_us=2985. Parser tests and checks passed.","rollback_reason":"Change is within noise/slightly worse than kept best, so not worth preserving despite being locally clean.","next_action_hint":"Boundary helper rewrites are too small to overcome noise. Look for larger algorithmic wins in lexer current/codepoint usage, template/string scanning, or validation traversal."}} +{"run":391,"commit":"79668ba","metric":3025,"metrics":{"class_private_parser_us":27,"function_control_parser_us":32,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":600},"status":"checks_failed","description":"Try numeric prefix pattern helpers","timestamp":1777289498745,"segment":1,"confidence":3.2837209302325583,"iterationTokens":4100,"asi":{"hypothesis":"String.starts_with?/2 still appeared in test_language profiling from numeric literal parsing/validation; replacing prefix checks with binary pattern helpers might reduce lexer overhead.","result":"Benchmark was not better than kept best (3025 vs 2974) and backpressure checks failed due known transient Process.monitor noproc/kaboom flake.","rollback_reason":"Checks failed and primary metric did not improve kept best; change should be reverted.","next_action_hint":"Do not pursue numeric prefix helper refactor; remaining starts_with?/regex number validation is not a large enough win for primary benchmark. Retry from clean state and focus elsewhere.","check_failure":"test/web_apis/beam_process_test.exs Process.monitor callback fires with exit reason returned noproc instead of kaboom, known transient flake."}} +{"run":392,"commit":"a29770f","metric":2928,"metrics":{"class_private_parser_us":26,"function_control_parser_us":31,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":700},"status":"keep","description":"Scan raw identifier offsets before updating lexer","timestamp":1777289589795,"segment":1,"confidence":3.604449938195303,"iterationTokens":3515,"asi":{"hypothesis":"advance_identifier_raw/1 remains hot and previously rebuilt the lexer map for every ASCII identifier byte. Scanning the raw offset first and updating lexer offset/column once per ASCII run should reduce allocation and map update overhead.","changes":"Added advance_identifier_raw_offset/3 to scan ASCII identifier bytes as an offset loop. The lexer struct is updated once for the run; unicode escape and non-ASCII fallbacks preserve existing behavior.","benchmark_after":"test_language_parser_us=2928, improving over kept best 2974. class_private_parser_us=26; function_control_parser_us=31. Parser coverage unchanged at 421 tests / 759 QuickJS-port tests; backpressure checks passed.","next_action_hint":"Look for other per-byte lexer paths that rebuild the lexer map repeatedly, especially skip_trivia/1, advance_bytes/2 consumers, and string/template scanners."}} +{"run":393,"commit":"59f8bb4","metric":3036,"metrics":{"class_private_parser_us":26,"function_control_parser_us":32,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":600},"status":"discard","description":"Try binary-pattern raw identifier scanning","timestamp":1777289705244,"segment":1,"confidence":3.9619565217391304,"iterationTokens":4903,"asi":{"hypothesis":"advance_identifier_raw_offset/3 still shows as hot; scanning a subbinary with binary pattern matching could avoid repeated :binary.at calls and inline ASCII identifier checks.","result":"Regression versus kept best: test_language_parser_us=3036 vs 2928. Small snippets remained good but primary worsened.","rollback_reason":"Creating/scanning subbinaries with pattern recursion was slower than direct :binary.at offset recursion for the large benchmark.","next_action_hint":"Keep the offset-loop optimization, but do not convert raw identifier scanning to subbinary pattern recursion. Investigate lexer skip_trivia/advance/current instead."}} +{"run":394,"commit":"185e2c1","metric":2938,"metrics":{"class_private_parser_us":27,"function_control_parser_us":33,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":600},"status":"discard","description":"Try batched inline whitespace skipping","timestamp":1777289793695,"segment":1,"confidence":4.2322206095791,"iterationTokens":3862,"asi":{"hypothesis":"skip_trivia/1 is still hot and rebuilds lexer state for each inline whitespace byte; scanning spaces/tabs/vtab/formfeed in an offset loop and updating once might reduce lexer overhead.","result":"No improvement versus kept best: test_language_parser_us=2938 vs 2928. Parser tests and backpressure checks passed.","rollback_reason":"Within noise/slightly worse than kept best, so not enough to keep.","next_action_hint":"Whitespace batching is not worthwhile in current benchmark. Investigate string/template scanning or parser validation passes."}} +{"run":395,"commit":"9e658d6","metric":3031,"metrics":{"class_private_parser_us":26,"function_control_parser_us":32,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":700},"status":"discard","description":"Try current-token argument parsing","timestamp":1777289895832,"segment":1,"confidence":4.703225806451613,"iterationTokens":3318,"asi":{"hypothesis":"parse_arguments/2 shows in profile and repeatedly calls eof?/match_value? at argument starts and separators; using current-token dispatch and a separator helper could reduce parser helper calls.","result":"Regression versus kept best: test_language_parser_us=3031 vs 2928. Parser tests and checks passed.","rollback_reason":"The extra helper/case structure did not improve primary benchmark, likely due overhead and limited call volume.","next_action_hint":"Avoid small parser loop rewrites unless they reduce much higher call counts. Look at lexer current/codepoint paths or AST validation traversal."}} +{"run":396,"commit":"4cac597","metric":2950,"metrics":{"class_private_parser_us":26,"function_control_parser_us":32,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":700},"status":"discard","description":"Try ASCII string raw chunk scanning","timestamp":1777291916195,"segment":1,"confidence":4.851913477537438,"iterationTokens":5025,"asi":{"hypothesis":"scan_string_body/4 appears in eprof and currently advances one codepoint at a time while accumulating single-character binaries. Scanning raw ASCII string chunks by offset and appending a sliced chunk should reduce lexer map updates and allocations for ordinary strings.","result":"No improvement versus kept best: test_language_parser_us=2950 vs 2928. Manual run was noisy/promising at 2847, but authoritative run_experiment did not beat best. Parser tests and backpressure checks passed.","rollback_reason":"The raw chunk fast path likely adds overhead to many short strings or is within benchmark noise; not worth keeping without primary improvement.","next_action_hint":"String raw chunking is not a clear win. Consider template scanning, comment scanning, or validation traversal consolidation next."}} +{"run":397,"commit":"81f5103","metric":3433,"metrics":{"class_private_parser_us":27,"function_control_parser_us":33,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":800},"status":"checks_failed","description":"Try template raw chunk scanning","timestamp":1777292022277,"segment":1,"confidence":4.703225806451613,"iterationTokens":3166,"asi":{"hypothesis":"scan_template_body/2 appears in eprof and advances one byte/codepoint at a time through raw template text. Scanning raw template chunks by offset could reduce lexer map updates similarly to identifiers.","result":"Regression versus kept best: test_language_parser_us=3433 vs 2928. Backpressure checks also failed due known transient Process.monitor noproc/kaboom flake.","rollback_reason":"Primary benchmark regressed and checks failed; revert.","next_action_hint":"Template chunk scanning is not promising in this form. Focus on validation traversal or a much more targeted lexer hot path.","check_failure":"test/web_apis/beam_process_test.exs Process.monitor callback fires with exit reason returned noproc instead of kaboom, known transient flake."}} +{"run":398,"commit":"2d83965","metric":3047,"metrics":{"class_private_parser_us":35,"function_control_parser_us":52,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":700},"status":"discard","description":"Try single-current keyword helper","timestamp":1777292128853,"segment":1,"confidence":5.301818181818182,"iterationTokens":5627,"asi":{"hypothesis":"keyword?/2 is still hot and currently calls current/1 twice; pattern matching on one current token should reduce token_at/current overhead.","result":"Regression versus kept best: test_language_parser_us=3047 vs 2928, and small snippet secondaries regressed substantially. Parser tests and checks passed.","rollback_reason":"Pattern-match helper shape was slower despite fewer current calls, consistent with earlier failed helper micro-optimizations.","next_action_hint":"Do not revisit isolated keyword?/match_value? helper micro-optimizations. Need algorithmic or call-site-specific changes."}} +{"run":399,"commit":"9b75fff","metric":3137,"metrics":{"class_private_parser_us":24,"function_control_parser_us":30,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":700},"status":"discard","description":"Try direct current token elem access","timestamp":1777292225785,"segment":1,"confidence":6.075,"iterationTokens":1651,"asi":{"hypothesis":"current/1 is hot and routes through token_at/2 with bounds fallback intended for peek. Since current index should always point at a valid token, direct elem(tokens, index) might reduce overhead.","result":"Regression versus kept best: test_language_parser_us=3137 vs 2928. Some secondary snippets improved but primary worsened. Parser tests and checks passed.","rollback_reason":"Direct current/1 did not improve the primary benchmark, likely due BEAM pattern/guard/code layout effects or noise despite fewer token_at calls.","next_action_hint":"Do not assume token_at/current micro-optimizations help. Continue with algorithmic lexer/parser changes only."}} +{"run":400,"commit":"020d417","metric":3171,"metrics":{"class_private_parser_us":32,"function_control_parser_us":35,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":900},"status":"discard","description":"Try keyword case dispatch","timestamp":1777292343256,"segment":1,"confidence":6.177966101694915,"iterationTokens":3152,"asi":{"hypothesis":"sets:is_element/2 from MapSet keyword lookup appears in lexer profiling; replacing it with a binary case dispatch may avoid set lookup overhead for identifiers.","result":"Regression versus kept best: test_language_parser_us=3171 vs 2928; parser test time also increased. Parser tests and checks passed.","rollback_reason":"Large binary case dispatch is slower than MapSet lookup in this workload/code layout.","next_action_hint":"Keep MapSet keyword lookup. Avoid hand-written keyword case dispatch."}} +{"run":401,"commit":"80d8736","metric":3312,"metrics":{"class_private_parser_us":27,"function_control_parser_us":34,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":900},"status":"checks_failed","description":"Try targeted raw identifier inlining","timestamp":1777292428419,"segment":1,"confidence":6.230769230769231,"iterationTokens":1608,"asi":{"hypothesis":"advance_identifier_raw_offset/3 remains hot after the offset-scanning win; targeted @compile inline for the raw identifier offset loop and ASCII predicate might reduce call overhead without broad inline bloat.","result":"Regression versus kept best: test_language_parser_us=3312 vs 2928. Checks also failed due known Process.monitor noproc/kaboom flake.","rollback_reason":"Primary benchmark regressed and checks failed; targeted inlining is not useful here.","next_action_hint":"Avoid @compile inline for lexer hot helpers; broad and targeted variants both regressed.","check_failure":"test/web_apis/beam_process_test.exs Process.monitor callback fires with exit reason returned noproc instead of kaboom, known transient flake."}} +{"run":402,"commit":"23e19b3","metric":7183,"metrics":{"class_private_parser_us":35,"function_control_parser_us":34,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":1200},"status":"discard","description":"Try case-based operator precedence","timestamp":1777292692618,"segment":1,"confidence":5.785714285714286,"iterationTokens":8004,"asi":{"hypothesis":"parse_binary_tail/3 is a hot expression call site and performs Map.get(@precedence, operator) for every expression tail. Replacing the map with a function/case dispatch might reduce map lookup overhead.","result":"Large regression: test_language_parser_us=7183 vs kept best 2928; parser tests and checks passed.","rollback_reason":"BEAM binary case dispatch for many operators is much slower here than the module attribute map lookup.","next_action_hint":"Keep @precedence map. Avoid large operator case dispatch; if optimizing binary expressions, target avoiding parse_binary_tail calls when token value is clearly not an operator rather than replacing precedence lookup."}} +{"run":403,"commit":"01afa9e","metric":3034,"metrics":{"class_private_parser_us":27,"function_control_parser_us":32,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":700},"status":"discard","description":"Try binary-tail terminator fast path","timestamp":1777292793750,"segment":1,"confidence":6.230769230769231,"iterationTokens":3159,"asi":{"hypothesis":"Instead of replacing precedence lookup, avoid it for common expression terminators in parse_binary_tail/3. Many expression tails likely see ), ;, }, or ] where no binary operator can follow.","result":"Regression versus kept best: test_language_parser_us=3034 vs 2928. Parser tests and checks passed.","rollback_reason":"The extra terminator membership check cost more than the avoided Map.get calls, or did not match enough hot cases.","next_action_hint":"Avoid simple binary-tail prefilters. The expression loop may need a deeper restructuring or parser-state metadata rather than local guard checks."}} +{"run":404,"commit":"1952c1e","metric":3312,"metrics":{"class_private_parser_us":34,"function_control_parser_us":33,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":900},"status":"discard","description":"Try early identifier prefix branch","timestamp":1777292895408,"segment":1,"confidence":5.890909090909091,"iterationTokens":2221,"asi":{"hypothesis":"Many parse_prefix/1 calls start on plain identifiers but still check async/import/new/class/function keyword branches first. Handling token.type == :identifier immediately after literals could avoid repeated keyword?/current calls at a hot expression site.","result":"Regression versus kept best: test_language_parser_us=3312 vs 2928. Parser tests and checks passed.","rollback_reason":"Moving identifier handling earlier changed branch layout and added peek work enough to hurt the primary benchmark.","next_action_hint":"Avoid parse_prefix branch reordering; previous full and focused parse_prefix rewrites both regressed. Consider parser state metadata or different AST construction strategy instead."}} +{"run":405,"commit":"6ed816a","metric":3984,"metrics":{"class_private_parser_us":29,"function_control_parser_us":34,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":800},"status":"discard","description":"Try direct binary-tail token value","timestamp":1777293013427,"segment":1,"confidence":5.5227272727272725,"iterationTokens":1906,"asi":{"hypothesis":"parse_binary_tail/3 only needs token.value for operators, including keyword operators in/instanceof. Avoiding operator_value/1 at this hot call site might reduce expression overhead.","result":"Regression versus kept best: test_language_parser_us=3984 vs 2928. Parser tests and checks passed.","rollback_reason":"Direct field access in this context unexpectedly worsened primary benchmark, likely due code generation/layout effects; keep operator_value/1.","next_action_hint":"Expression micro-optimizations remain unreliable. Consider a larger architecture experiment, such as storing token kind metadata during lexing only if profiling justifies it."}} +{"type":"config","name":"JavaScript Parser Compatibility","metricName":"test_language_errors","metricUnit":"","bestDirection":"lower"} +{"run":406,"commit":"d73e56b","metric":42,"metrics":{"test_language_unique_errors":3,"test_language_parse_ok":0,"quickjs_parser_tests":759,"parser_tests":421,"parser_test_ms":700},"status":"keep","description":"Set compatibility autoresearch baseline","timestamp":1777293414397,"segment":2,"confidence":null,"iterationTokens":99,"asi":{"hypothesis":"Switch autoresearch from parser throughput to closing QuickJS-compatible syntax gaps by measuring parser errors on test/vm/test_language.js while preserving focused parser tests.","changes":"Added bench/js_parser_compat.exs, rewrote autoresearch.md and autoresearch.sh for compatibility metrics, and initialized a new test_language_errors baseline.","baseline":"test_language_errors=42, test_language_unique_errors=3, test_language_parse_ok=0, quickjs_parser_tests=759, parser_tests=421.","next_action_hint":"Inspect earliest errors by line. First gaps appear to be invalid numeric literal handling at lines 93/649 and repeated expected expression/expected ) around object literal calls using unusual property keys or syntax."}} +{"run":407,"commit":"009866b","metric":4,"metrics":{"test_language_unique_errors":3,"test_language_parse_ok":0,"quickjs_parser_tests":760,"parser_tests":423,"parser_test_ms":1000},"status":"keep","description":"Parse string values that look like operators","timestamp":1777293565578,"segment":2,"confidence":null,"iterationTokens":6307,"asi":{"hypothesis":"Most test_language errors come from string literals whose values are ++/-- being interpreted as update operators because parse_prefix/1 used match_value?/2 without checking token type.","changes":"Restricted prefix/postfix update operators to punctuator tokens and unary operators to punctuator/keyword tokens. Added QuickJS-port tests for string literals whose values match update/unary operators.","benchmark_after":"test_language_errors reduced from 42 to 4. Parser tests increased to 423 and QuickJS-port coverage to 760. Backpressure checks passed.","next_action_hint":"Fix remaining number/member gap around 0x7ffffffe and 01.a/0x1.a numeric property access without weakening invalid numeric literal diagnostics."}} +{"run":408,"commit":"65f97f7","metric":0,"metrics":{"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":761,"parser_tests":426,"parser_test_ms":1200},"status":"keep","description":"Parse remaining numeric literal member cases","timestamp":1777293670978,"segment":2,"confidence":null,"iterationTokens":7435,"asi":{"hypothesis":"The remaining test_language gaps are numeric literal edge cases: hex literals ending with e were incorrectly checked as malformed exponents, and legacy leading-zero integer member access like 01.a was scanned as a decimal with trailing dot.","changes":"Limited exponent-separator validation to non-prefixed decimal literals, and prevented decimal fraction scanning for leading-zero integer literals followed by dot plus identifier. Added QuickJS-port tests for 0x7ffffffe, 01.a, and keeping 0.a invalid.","benchmark_after":"test_language_errors reduced from 4 to 0; test_language_parse_ok=1; parser tests increased to 426 and QuickJS-port coverage to 761. Backpressure checks passed.","next_action_hint":"Since test_language.js now parses cleanly, broaden the compatibility benchmark to additional QuickJS-compatible sources or QuickJS-derived focused tests rather than overfitting this file."}} +{"type":"config","name":"JavaScript Parser Test262 Compatibility Sample","metricName":"test262_language_sample_errors","metricUnit":"","bestDirection":"lower"} +{"run":409,"commit":"9868247","metric":10,"metrics":{"test262_language_sample_error_files":3,"test262_language_sample_unique_errors":4,"test262_language_sample_files":300,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":761,"parser_tests":426,"parser_test_ms":700},"status":"keep","description":"Set Test262 language sample baseline","timestamp":1777293968563,"segment":3,"confidence":null,"iterationTokens":104,"asi":{"hypothesis":"test_language.js now parses cleanly, so broaden compatibility autoresearch to a deterministic non-negative Test262 language sample to find remaining accepted syntax gaps.","changes":"Expanded bench/js_parser_compat.exs to parse the first 300 sorted non-negative test/test262/test/language/**/*.js files, updated autoresearch docs, and switched the primary metric to test262_language_sample_errors.","baseline":"test262_language_sample_errors=10 across 3 files; test_language_errors remains 0; parser_tests=426; quickjs_parser_tests=761.","first_failures":"arguments-object/S10.6_A7.js expected private name for object #{...}; mapped descriptor tests expected } around getter/setter descriptor literals.","next_action_hint":"Inspect object literal syntax in the three failing files; likely gaps include legacy SpiderMonkey object literal sharp variables or getter/setter property forms."}} +{"run":410,"commit":"47db273","metric":0,"metrics":{"test262_language_sample_error_files":0,"test262_language_sample_unique_errors":0,"test262_language_sample_files":300,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":763,"parser_tests":429,"parser_test_ms":900},"status":"keep","description":"Parse Test262 sample arrow and string punctuator gaps","timestamp":1777294098953,"segment":3,"confidence":null,"iterationTokens":6040,"asi":{"hypothesis":"The three failing Test262 sample files are due two broad grammar gaps: string literal values like \"#\" are interpreted as private-name punctuators, and arrow concise bodies incorrectly consume comma separators inside object literal properties.","changes":"Restricted private identifier expression parsing to punctuator # tokens, and parsed arrow concise bodies at assignment precedence so comma remains available to surrounding object/sequence parsing. Added QuickJS-port regression tests for string # literals and arrow bodies before object property separators/sequence commas.","benchmark_after":"test262_language_sample_errors reduced from 10 to 0 across 300 files; test_language_errors remains 0; parser tests increased to 429 and QuickJS-port coverage to 763. Backpressure checks passed.","next_action_hint":"Broaden the deterministic Test262 language sample beyond 300 files to expose the next compatibility gaps."}} +{"type":"config","name":"JavaScript Parser Test262 Compatibility 1000 Sample","metricName":"test262_language_sample_errors","metricUnit":"","bestDirection":"lower"} +{"run":411,"commit":"2141eca","metric":501,"metrics":{"test262_language_sample_error_files":13,"test262_language_sample_unique_errors":3,"test262_language_sample_files":1000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":763,"parser_tests":429,"parser_test_ms":900},"status":"keep","description":"Expand Test262 compatibility sample to 1000 files","timestamp":1777294188100,"segment":4,"confidence":null,"iterationTokens":107,"asi":{"hypothesis":"The first 300 Test262 language files now parse cleanly, so expanding the deterministic non-negative sample to 1000 files should expose the next broad compatibility gaps.","changes":"Raised the Test262 language compatibility sample limit from 300 to 1000 and updated autoresearch docs. Reinitialized the compatibility metric for the broader workload.","baseline":"test262_language_sample_errors=501 across 13 files; test_language_errors remains 0; parser_tests=429; quickjs_parser_tests=763.","first_failures":"Directive-prologue strict tests fail on reserved/restricted identifiers in function names or expressions; bigint-arithmetic contributes 480 invalid bigint literal errors.","next_action_hint":"Tackle bigint literal validation first because it accounts for most errors, then inspect directive-prologue strict test syntax to distinguish valid sloppy syntax from strict early errors."}} +{"run":412,"commit":"0462425","metric":21,"metrics":{"test262_language_sample_error_files":12,"test262_language_sample_unique_errors":2,"test262_language_sample_files":1000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":764,"parser_tests":431,"parser_test_ms":1400},"status":"keep","description":"Accept prefixed BigInt exponent letters","timestamp":1777294299932,"segment":4,"confidence":null,"iterationTokens":3800,"asi":{"hypothesis":"Most 1000-file sample errors come from prefixed BigInt literals containing hex exponent letters E/e being misclassified as decimal exponent syntax.","changes":"Limited invalid BigInt exponent validation to non-prefixed decimal BigInt literals and added QuickJS-port tests for prefixed BigInts containing E/e while preserving decimal exponent BigInt errors.","benchmark_after":"test262_language_sample_errors reduced from 501 to 21; error_files reduced from 13 to 12; test_language_errors remains 0; parser tests increased to 431 and QuickJS-port coverage to 764. Backpressure checks passed.","next_action_hint":"Remaining failures are directive-prologue tests around non-strict reserved words and eval string literals; inspect whether tokenizer/parser treats public/static/etc. as non-bindable in sloppy mode and whether eval string content should be ignored as runtime data."}} +{"run":413,"commit":"666ec73","metric":0,"metrics":{"test262_language_sample_error_files":0,"test262_language_sample_unique_errors":0,"test262_language_sample_files":1000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":765,"parser_tests":434,"parser_test_ms":800},"status":"keep","description":"Allow sloppy future reserved identifiers","timestamp":1777294440586,"segment":4,"confidence":null,"iterationTokens":6932,"asi":{"hypothesis":"Remaining 1000-file sample errors are directive-prologue tests using strict-mode future reserved words as sloppy bindings/references. The parser lexes them as keywords and rejects them even when strict mode is not active.","changes":"Allowed implements/interface/package/private/protected/public as identifier-like tokens in sloppy syntax while marking them restricted in strict binding validation. Updated reserved-name tests and added focused future-reserved-word coverage.","benchmark_after":"test262_language_sample_errors reduced from 21 to 0; test_language_errors remains 0; parser tests increased to 434 and QuickJS-port coverage to 765. Backpressure checks passed.","next_action_hint":"Broaden the deterministic Test262 language sample beyond 1000 files to expose the next compatibility gaps."}} +{"type":"config","name":"JavaScript Parser Test262 Compatibility 2000 Sample","metricName":"test262_language_sample_errors","metricUnit":"","bestDirection":"lower"} +{"run":414,"commit":"bb72292","metric":119,"metrics":{"test262_language_sample_error_files":40,"test262_language_sample_unique_errors":10,"test262_language_sample_files":2000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":765,"parser_tests":434,"parser_test_ms":1000},"status":"keep","description":"Expand Test262 compatibility sample to 2000 files","timestamp":1777294550206,"segment":5,"confidence":null,"iterationTokens":107,"asi":{"hypothesis":"The first 1000 Test262 language files now parse cleanly, so expanding the deterministic non-negative sample to 2000 files should expose the next compatibility gaps.","changes":"Raised the Test262 language compatibility sample limit from 1000 to 2000 and updated autoresearch docs. Reinitialized the compatibility metric for the broader workload.","baseline":"test262_language_sample_errors=119 across 40 files; test_language_errors remains 0; parser_tests=434; quickjs_parser_tests=765.","first_failures":"Many failures involve yield used as an identifier in non-strict/non-generator contexts, destructuring assignment with yield defaults/targets, duplicate __proto__ in destructuring assignment object literals, and object literal method/accessor patterns in iterator-return tests.","next_action_hint":"Tackle yield-as-identifier handling in sloppy arrow/destructuring contexts first because it appears across many files."}} +{"run":415,"commit":"2fa4ab4","metric":12,"metrics":{"test262_language_sample_error_files":4,"test262_language_sample_unique_errors":6,"test262_language_sample_files":2000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":766,"parser_tests":437,"parser_test_ms":1000},"status":"keep","description":"Track yield context while parsing functions","timestamp":1777295122826,"segment":5,"confidence":null,"iterationTokens":25122,"asi":{"hypothesis":"Most 2000-file sample errors come from treating yield as a YieldExpression everywhere. Yield should be an identifier in sloppy non-generator contexts, but a YieldExpression inside generator bodies.","changes":"Added parser yield_allowed? context, parsed function bodies with generator-specific yield context, allowed yield as identifier-like outside generators/modules, stopped bare yield before delimiters, and added focused QuickJS-port tests for sloppy yield identifiers and generator yield defaults.","benchmark_after":"test262_language_sample_errors reduced from 119 to 12; error files reduced from 40 to 4; test_language_errors remains 0; parser tests increased to 437 and QuickJS-port coverage to 766. Backpressure checks passed.","next_action_hint":"Remaining failures include object literal/destructuring __proto__ handling, object literal methods named return, and await identifier/assignment-target handling in script contexts."}} +{"run":416,"commit":"0e74c93","metric":2,"metrics":{"test262_language_sample_error_files":1,"test262_language_sample_unique_errors":1,"test262_language_sample_files":2000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":767,"parser_tests":438,"parser_test_ms":1000},"status":"keep","description":"Track await context and keyword accessor keys","timestamp":1777295337103,"segment":5,"confidence":11.7,"iterationTokens":11090,"asi":{"hypothesis":"Remaining 2000-file sample errors include await used as a sloppy script identifier/assignment target and object literal accessors whose property name is a keyword such as return.","changes":"Added await_allowed? parser context, parsed async function/arrow bodies and parameters with await enabled, treated await as an identifier outside async/module contexts, and allowed keyword property names after get/set accessor prefixes. Updated await diagnostics tests.","benchmark_after":"test262_language_sample_errors reduced from 12 to 2; only duplicate __proto__ in destructuring assignment remains. test_language_errors remains 0; parser tests increased to 438 and QuickJS-port coverage to 767. Backpressure checks passed.","next_action_hint":"Handle duplicate __proto__ validation only for object initializers, not object assignment patterns produced from assignment targets."}} +{"run":417,"commit":"5187d0e","metric":0,"metrics":{"test262_language_sample_error_files":0,"test262_language_sample_unique_errors":0,"test262_language_sample_files":2000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":768,"parser_tests":440,"parser_test_ms":1400},"status":"keep","description":"Allow duplicate proto in assignment patterns","timestamp":1777295509063,"segment":5,"confidence":11.7,"iterationTokens":6403,"asi":{"hypothesis":"The last 2000-file sample errors come from applying duplicate __proto__ object-initializer validation before assignment-target conversion. Duplicate __proto__ is invalid for object initializers but allowed in object assignment patterns.","changes":"Moved duplicate __proto__ validation from parse_object_expression/1 to a post-parse AST validation pass over ObjectExpression nodes, which skips converted ObjectPattern assignment targets. Added tests for duplicate __proto__ in assignment patterns while preserving object initializer diagnostics.","benchmark_after":"test262_language_sample_errors reduced from 2 to 0; error files reduced from 1 to 0; test_language_errors remains 0; parser tests increased to 440 and QuickJS-port coverage to 768. Backpressure checks passed.","next_action_hint":"Broaden the deterministic Test262 language sample beyond 2000 files or target another language subdirectory group."}} +{"type":"config","name":"JavaScript Parser Test262 Compatibility 4000 Sample","metricName":"test262_language_sample_errors","metricUnit":"","bestDirection":"lower"} +{"run":418,"commit":"2c9817e","metric":68,"metrics":{"test262_language_sample_error_files":16,"test262_language_sample_unique_errors":5,"test262_language_sample_files":4000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":768,"parser_tests":440,"parser_test_ms":900},"status":"keep","description":"Expand Test262 compatibility sample to 4000 files","timestamp":1777295738899,"segment":6,"confidence":null,"iterationTokens":107,"asi":{"hypothesis":"The first 2000 Test262 language files now parse cleanly, so expanding the deterministic non-negative sample to 4000 files should expose the next compatibility gaps.","changes":"Raised the Test262 language compatibility sample limit from 2000 to 4000 and updated autoresearch docs. Reinitialized the compatibility metric for the broader workload.","baseline":"test262_language_sample_errors=68 across 16 files; test_language_errors remains 0; parser_tests=440; quickjs_parser_tests=768.","first_failures":"Async generator yield spread object cases, class accessor computed key with in-expression, and decorators syntax using @.","next_action_hint":"Tackle non-decorator syntax first: async generator yield *{} / yield identifier spread object and computed accessor names involving in. Decorators are a larger syntax feature and may need separate AST support."}} +{"run":419,"commit":"8a66457","metric":48,"metrics":{"test262_language_sample_error_files":8,"test262_language_sample_unique_errors":2,"test262_language_sample_files":4000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":770,"parser_tests":443,"parser_test_ms":800},"status":"keep","description":"Parse yield spread and boolean property names","timestamp":1777295903691,"segment":6,"confidence":null,"iterationTokens":8060,"asi":{"hypothesis":"Non-decorator failures in the 4000-file sample are from yield expression arguments consuming comma-separated object spread siblings, and dot-property names like .false after computed accessor tests.","changes":"Parsed non-delegated yield arguments at assignment precedence instead of comma precedence, allowed boolean/null tokens as dot property identifiers, and added focused QuickJS-port tests for yield object spread and boolean property names/computed accessor names.","benchmark_after":"test262_language_sample_errors reduced from 68 to 48; remaining failures are decorator syntax using @. test_language_errors remains 0; parser tests increased to 443 and QuickJS-port coverage to 770. Backpressure checks passed.","next_action_hint":"Implement minimal decorator syntax parsing for accepted class decorator tests, or expand benchmark beyond decorator cluster if decorators are intentionally out of current scope."}} +{"run":420,"commit":"4412699","metric":0,"metrics":{"test262_language_sample_error_files":0,"test262_language_sample_unique_errors":0,"test262_language_sample_files":4000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":771,"parser_tests":445,"parser_test_ms":900},"status":"keep","description":"Parse decorator syntax before class expressions","timestamp":1777296041312,"segment":6,"confidence":null,"iterationTokens":4734,"asi":{"hypothesis":"The remaining 4000-file sample errors are accepted decorator syntax before class expressions. Even without representing decorators in AST, the parser can consume decorator lists and parse the decorated class expression.","changes":"Added @ as a lexer punctuator and a minimal decorated-class expression parser that skips decorator expressions until the following class token. Added QuickJS-port tests for call/member/parenthesized/private-member decorator forms.","benchmark_after":"test262_language_sample_errors reduced from 48 to 0; error files reduced from 8 to 0; test_language_errors remains 0; parser tests increased to 445 and QuickJS-port coverage to 771. Backpressure checks passed.","next_action_hint":"Broaden the deterministic Test262 language sample beyond 4000 files to expose the next compatibility gaps; if decorators recur in declarations/elements, add structured decorator AST support later."}} +{"type":"config","name":"JavaScript Parser Test262 Compatibility 8000 Sample","metricName":"test262_language_sample_errors","metricUnit":"","bestDirection":"lower"} +{"run":421,"commit":"99c44d5","metric":1467,"metrics":{"test262_language_sample_error_files":438,"test262_language_sample_unique_errors":12,"test262_language_sample_files":8000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":771,"parser_tests":445,"parser_test_ms":1000},"status":"keep","description":"Expand Test262 compatibility sample to 8000 files","timestamp":1777296196175,"segment":7,"confidence":null,"iterationTokens":107,"asi":{"hypothesis":"The first 4000 Test262 language files now parse cleanly, so expanding the deterministic non-negative sample to 8000 files should expose broader compatibility gaps.","changes":"Raised the Test262 language compatibility sample limit from 4000 to 8000 and updated autoresearch docs. Reinitialized the compatibility metric for the broader workload.","baseline":"test262_language_sample_errors=1467 across 438 files; test_language_errors remains 0; parser_tests=445; quickjs_parser_tests=771.","first_failures":"Class fields named static, compound-assignment whitespace tests around parenthesized assignment targets, division vs regexp lexical goal errors, dynamic import parsing, module fixture source-type handling, and likely many explicit resource management/import attributes later in the sample.","next_action_hint":"Tackle high-volume broad grammar gaps first. Inspect error frequencies and earliest failure clusters; class static-as-field and parenthesized assignment targets are likely small targeted fixes, division/regexp lexical goal is larger."}} +{"run":422,"commit":"4a274a4","metric":636,"metrics":{"test262_language_sample_error_files":178,"test262_language_sample_unique_errors":12,"test262_language_sample_files":8000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":772,"parser_tests":447,"parser_test_ms":1000},"status":"keep","description":"Parse dynamic import at statement position","timestamp":1777296344159,"segment":7,"confidence":null,"iterationTokens":18725,"asi":{"hypothesis":"Most 8000-file errors are dynamic import expressions being parsed as static import declarations whenever import appears at statement position.","changes":"Dispatch statement-position import followed by '(' to expression parsing rather than parse_import_declaration/1. Added focused QuickJS-port tests for dynamic import calls and import options objects at statement position.","benchmark_after":"test262_language_sample_errors reduced from 1467 to 636; error files reduced from 438 to 178; test_language_errors remains 0; parser tests increased to 447 and QuickJS-port coverage to 772. Backpressure checks passed.","next_action_hint":"Remaining large clusters include module fixture source-type detection, compound assignment parenthesized targets, division-vs-regexp lexing, and class fields named static."}} +{"run":423,"commit":"f66db5a","metric":134,"metrics":{"test262_language_sample_error_files":79,"test262_language_sample_unique_errors":8,"test262_language_sample_files":8000,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":773,"parser_tests":449,"parser_test_ms":1100},"status":"keep","description":"Parse import dot dynamic expressions","timestamp":1777296495019,"segment":7,"confidence":2.6553784860557768,"iterationTokens":3782,"asi":{"hypothesis":"Many remaining dynamic-import errors are import.defer/import.source call expressions being parsed as static import declarations or import.meta meta-properties.","changes":"Statement-position import followed by dot now parses as an expression. In prefix parsing, only import.meta becomes a MetaProperty; other import dot forms parse as an import identifier and normal member/call expression. Added focused QuickJS-port tests for import.defer and import.meta.","benchmark_after":"test262_language_sample_errors reduced from 636 to 134; error files reduced from 178 to 79; test_language_errors remains 0; parser tests increased to 449 and QuickJS-port coverage to 773. Backpressure checks passed.","next_action_hint":"Remaining clusters include module fixture source-type detection for *_FIXTURE.js modules, parenthesized assignment targets, division-vs-regexp lexical goals, and class fields named static."}} +{"type":"config","name":"JavaScript Parser Test262 Compatibility Clean 8000 Sample","metricName":"test262_language_sample_errors","metricUnit":"","bestDirection":"lower"} +{"run":424,"commit":"21f45d0","metric":94,"metrics":{"test262_language_sample_error_files":39,"test262_language_sample_unique_errors":7,"test262_language_sample_files":8000,"test262_language_sample_module_files":158,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":773,"parser_tests":449,"parser_test_ms":1200},"status":"keep","description":"Clean Test262 compatibility autoresearch setup","timestamp":1777296923937,"segment":8,"confidence":null,"iterationTokens":108,"asi":{"hypothesis":"The autoresearch setup had accumulated ad hoc segment edits and limited diagnostics. A cleaner deterministic benchmark with source-type detection, cluster summaries, and environment controls should make remaining parser compatibility work easier and less error-prone.","changes":"Rewrote bench/js_parser_compat.exs into a structured benchmark module with configurable sample limit/offset/error output, source-type detection for module metadata/static import-export syntax, error message and directory clustering, and additional source-type metrics. Rewrote autoresearch.md and tidied autoresearch.sh.","baseline":"Clean 8000-file sample baseline is test262_language_sample_errors=94 across 39 files, with test_language_errors=0, parser_tests=449, quickjs_parser_tests=773.","next_action_hint":"Use ERROR_MESSAGE/ERROR_DIR clusters first. Current high-value clusters are parenthesized assignment/exponentiation expected-), division-vs-regexp lexical goals, class fields named static, and static-init await/yield function binding cases."}} +{"run":425,"commit":"f047ddd","metric":92,"metrics":{"test262_language_sample_error_files":37,"test262_language_sample_unique_errors":6,"test262_language_sample_files":8000,"test262_language_sample_module_files":158,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":774,"parser_tests":451,"parser_test_ms":1000},"status":"keep","description":"Parse static as instance class field","timestamp":1777297123155,"segment":8,"confidence":null,"iterationTokens":8621,"asi":{"hypothesis":"Two remaining 8000-sample files use static as an instance class field name. The parser always consumed static as the static modifier unless followed by '(', so 'static;' and 'static = value;' failed before parsing a field key.","changes":"Changed class static modifier consumption to leave static as a field key when followed by ';' or '='. Added focused QuickJS-port tests for bare and assigned instance fields named static.","benchmark_after":"test262_language_sample_errors reduced from 94 to 92; error files from 39 to 37; test_language_errors remains 0; parser tests increased to 451 and QuickJS-port coverage to 774. Backpressure checks passed.","next_action_hint":"Tackle parenthesized compound-assignment/exponentiation expected-')' cluster next; likely parse parens currently produce expression rather than assignment target in contexts like (x) += y or exponentiation with parenthesized unary expressions."}} +{"run":426,"commit":"fd55371","metric":54,"metrics":{"test262_language_sample_error_files":10,"test262_language_sample_unique_errors":6,"test262_language_sample_files":8000,"test262_language_sample_module_files":158,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":776,"parser_tests":453,"parser_test_ms":1200},"status":"keep","description":"Parse punctuation-valued strings and unicode whitespace","timestamp":1777297332420,"segment":8,"confidence":20,"iterationTokens":8296,"asi":{"hypothesis":"The exponentiation and compound-assignment clusters share lexer/parser confusion from string literal values that look like punctuators and non-ASCII ECMAScript whitespace/line separators not being skipped as trivia.","changes":"Parsed literal tokens before value-based punctuator branches in parse_prefix/1, and taught skip_trivia/1 to consume non-ASCII ECMAScript whitespace/line terminators such as NBSP, LS, and PS. Added focused QuickJS-port tests for punctuation-valued strings and Unicode whitespace around compound assignment.","benchmark_after":"test262_language_sample_errors reduced from 92 to 54; error files reduced from 37 to 10; test_language_errors remains 0; parser tests increased to 453 and QuickJS-port coverage to 776. Backpressure checks passed.","next_action_hint":"Remaining clusters are division-vs-regexp lexical goals, static-init await/yield binding function-expression syntax, and invalid string escape handling in relational expression tests."}} +{"run":427,"commit":"f1fa9ff","metric":45,"metrics":{"test262_language_sample_error_files":7,"test262_language_sample_unique_errors":5,"test262_language_sample_files":8000,"test262_language_sample_module_files":158,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":777,"parser_tests":455,"parser_test_ms":900},"status":"keep","description":"Allow contextual keyword function expression names","timestamp":1777297512523,"segment":8,"confidence":2.45,"iterationTokens":8296,"asi":{"hypothesis":"Remaining static-block/generator files use await/yield as function expression binding identifiers in contexts where they are valid identifiers, but the parser only accepted identifier tokens for optional function expression names.","changes":"Function expression name parsing now accepts identifier-like contextual keyword tokens and still routes through parse_binding_identifier/1 for existing validation. Added focused tests for await in class static blocks and yield inside generator bodies.","benchmark_after":"test262_language_sample_errors reduced from 54 to 45; error files reduced from 10 to 7; test_language_errors remains 0; parser tests increased to 455 and QuickJS-port coverage to 777. Backpressure checks passed.","next_action_hint":"Remaining failures are concentrated in division lexical-goal handling and surrogate escape acceptance for strings."}} +{"run":428,"commit":"d982b85","metric":41,"metrics":{"test262_language_sample_error_files":5,"test262_language_sample_unique_errors":4,"test262_language_sample_files":8000,"test262_language_sample_module_files":158,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":778,"parser_tests":456,"parser_test_ms":700},"status":"keep","description":"Accept fixed surrogate unicode string escapes","timestamp":1777297613726,"segment":8,"confidence":4.076923076923077,"iterationTokens":5355,"asi":{"hypothesis":"Relational-expression failures use lone surrogate fixed Unicode escapes such as \\uD800 and \\uDC00 inside strings. ECMAScript strings store UTF-16 code units, so these escapes are accepted even though they are not scalar Unicode code points.","changes":"Fixed-length string Unicode escapes now accept code units through 0xFFFF and represent surrogate code units as raw 16-bit binaries instead of trying to encode them as UTF-8. Added focused QuickJS-port coverage for comparing strings containing lone surrogate escapes.","benchmark_after":"test262_language_sample_errors reduced from 45 to 41; error files reduced from 7 to 5; unique errors reduced from 5 to 4; test_language_errors remains 0. Backpressure checks passed.","next_action_hint":"Only division-expression files remain; inspect regex-vs-division lexical-goal decisions and string/regexp scanning around nested slash-heavy assertion strings."}} +{"run":429,"commit":"1b2ef38","metric":0,"metrics":{"test262_language_sample_error_files":0,"test262_language_sample_unique_errors":0,"test262_language_sample_files":8000,"test262_language_sample_module_files":158,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":780,"parser_tests":459,"parser_test_ms":700},"status":"keep","description":"Improve division lexical goal after braces and contextual keywords","timestamp":1777297816045,"segment":8,"confidence":4.076923076923077,"iterationTokens":10821,"asi":{"hypothesis":"The final division failures come from lexer lexical-goal heuristics: slash after object/function bodies followed by whitespace and an expression starter was scanned as a regexp, and slash after contextual keyword identifiers such as 'of' was also scanned as a regexp.","changes":"Generalized regexp_allowed?/1 to inspect lexer state, treat identifier-like contextual keywords as expression-ending tokens for slash lexing, and classify slash after '}' plus horizontal whitespace plus an expression starter as division while preserving regexp literals immediately after block statements. Added focused tests for object/function division, regexp after blocks, and division after contextual keyword identifiers.","benchmark_after":"test262_language_sample_errors reached 0 for the 8000-file sample; error files and unique errors reached 0; test_language_errors remains 0; parser tests increased to 459 and QuickJS-port coverage to 780. Backpressure checks passed.","next_action_hint":"Expand the deterministic Test262 language sample beyond 8000 files, likely 12000 or 16000, and continue fixing broad syntax gaps found in the next slice."}} +{"type":"config","name":"JavaScript Parser Test262 Compatibility Clean 12000 Sample","metricName":"test262_language_sample_errors","metricUnit":"","bestDirection":"lower"} +{"run":430,"commit":"47ab081","metric":469,"metrics":{"test262_language_sample_error_files":157,"test262_language_sample_unique_errors":20,"test262_language_sample_files":12000,"test262_language_sample_module_files":850,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":780,"parser_tests":459,"parser_test_ms":800},"status":"keep","description":"Expand Test262 compatibility sample to 12000 files","timestamp":1777297897956,"segment":9,"confidence":null,"iterationTokens":108,"asi":{"hypothesis":"The first 8000 deterministic Test262 non-negative language files are now parse-clean, so expanding the sample to 12000 should expose the next broad compatibility gaps without changing the parser implementation.","changes":"Raised the default benchmark sample limit from 8000 to 12000 and updated autoresearch.md to document the new workload and next-slice commands.","baseline":"New 12000-file baseline is test262_language_sample_errors=469 across 157 files, with 20 unique error messages and 850 module files. test_language_errors remains 0.","next_action_hint":"The largest new cluster is import defer syntax under test/test262/test/language/import/import-defer, followed by top-level await/module source handling and await-using statements. Start with broad import defer grammar support rather than file-specific fixes."}} +{"run":431,"commit":"2608ae8","metric":167,"metrics":{"test262_language_sample_error_files":59,"test262_language_sample_unique_errors":20,"test262_language_sample_files":12000,"test262_language_sample_module_files":850,"test_language_errors":0,"test_language_unique_errors":0,"test_language_parse_ok":1,"quickjs_parser_tests":781,"parser_tests":460,"parser_test_ms":2100},"status":"keep","description":"Parse static import defer namespace declarations","timestamp":1777298031884,"segment":9,"confidence":null,"iterationTokens":9321,"asi":{"hypothesis":"The dominant 12000-sample cluster is static import-defer declarations of the form 'import defer * as ns from ...'. The existing module parser treats 'defer' as a default import name and then expects 'from'.","changes":"Added a generic static import defer modifier consumer before import specifier parsing when 'defer' is followed by '*'. Added focused QuickJS-port test coverage for deferred namespace imports.","benchmark_after":"test262_language_sample_errors reduced from 469 to 167; error files from 157 to 59; test_language_errors remains 0. Backpressure checks passed.","next_action_hint":"Next high-volume cluster is top-level await with regexp operands; likely await expression parsing does not allow regexp literal argument because slash lexical goal after await keyword or parse_await_expression precedence is wrong."}} diff --git a/autoresearch.md b/autoresearch.md new file mode 100644 index 000000000..e9b3572fa --- /dev/null +++ b/autoresearch.md @@ -0,0 +1,100 @@ +# Autoresearch: JavaScript Parser Compatibility + +## Objective +Close accepted-syntax compatibility gaps in the experimental hand-written JavaScript lexer/parser (`lib/quickbeam/js/parser*`) against QuickJS/Test262-style JavaScript while preserving VM/Web API behavior and the focused parser test suite. + +This segment is compatibility-focused. Do not cheat by suppressing diagnostics, skipping validation, weakening tests, changing Test262 inputs, or special-casing benchmark files/strings. Fix the grammar/lexer behavior and add focused regression tests for each gap. + +## Primary Metric +- **`test262_language_sample_errors`** (lower is better): total parser errors across the deterministic standalone non-negative `test/test262/test/**/*.js` corpus, excluding Test262 support fixtures after selecting the sample window. + +## Secondary Metrics +- `test262_language_sample_error_files` — sampled files with parser errors. +- `test262_language_sample_unique_errors` — unique diagnostic messages in sampled files. +- `test262_language_sample_files` — sample size; default should stay 12000. +- `test262_language_sample_module_files` — files parsed with `source_type: :module` by metadata/static-module detection. +- `test_language_errors` — parser errors on `test/vm/test_language.js`; must stay 0. +- `test_language_parse_ok` — must stay 1. +- `quickjs_parser_tests` — QuickJS-port coverage signal; must not regress intentionally. +- `parser_tests` — focused parser test count. +- `parser_test_ms` — focused parser suite duration. + +## Commands +Run the accepted-syntax compatibility loop with: + +```sh +./autoresearch.sh +``` + +Run QuickJS-vs-parser acceptance parity with the generated ExUnit wrapper: + +```sh +PARSER_BENCH=quickjs_audit_exunit AUDIT_OFFSET=30000 AUDIT_LIMIT=2000 ./autoresearch.sh +``` + +Useful optional environment variables: + +```sh +TEST262_GLOB='test/test262/test/language/**/*.js' ./autoresearch.sh # restrict accepted-syntax tests +TEST262_SAMPLE_OFFSET=20000 ./autoresearch.sh # inspect a later accepted-syntax slice +TEST262_ERROR_LIMIT=80 ./autoresearch.sh # print more accepted-syntax failing files +AUDIT_GLOB='test/test262/test/language/**/*.js' PARSER_BENCH=quickjs_audit_exunit ./autoresearch.sh +AUDIT_OFFSET=32000 AUDIT_LIMIT=2000 AUDIT_FILE_TIMEOUT=5000 PARSER_BENCH=quickjs_audit_exunit ./autoresearch.sh +``` + +`autoresearch.sh` runs: +1. `mix test test/js/parser --formatter ExUnit.CLIFormatter` +2. one selected benchmark: + - `mix run bench/js_parser_compat.exs` for `PARSER_BENCH=compat` + - `mix run bench/js_parser_perf.exs` for `PARSER_BENCH=perf` + - `mix run bench/js_parser_quickjs_audit.exs` for legacy `PARSER_BENCH=quickjs_audit` + - `mix test test/js/parser/quickjs_acceptance_audit_test.exs --only quickjs_acceptance_audit` for `PARSER_BENCH=quickjs_audit_exunit` + +The benchmark prints: +- summary CSV rows for `test_language` and the Test262 sample +- top `ERROR_MESSAGE` clusters +- top `ERROR_DIR` clusters +- `ERROR_FILE ...` examples with source type and first diagnostic +- structured `METRIC ...` lines for autoresearch + +## Source Type Rules +`bench/js_parser_compat.exs` parses files as modules when any of these are true: +- Test262 metadata has `flags: [... module ...]` +- path contains `/module-code/`, except fixtures whose filename explicitly marks `script-code` +- source has top-level-looking static `import` / `export` syntax + +The deterministic sample excludes files ending in `_FIXTURE.js` after selecting the sample window because Test262 uses them as support inputs for other tests, not standalone accepted-syntax tests. Everything else is parsed as script source. This is benchmark setup only; do not edit Test262 files. + +## Files in Scope +- `lib/quickbeam/js/parser.ex` +- `lib/quickbeam/js/parser/lexer.ex` +- `lib/quickbeam/js/parser/ast.ex` +- `lib/quickbeam/js/parser/token.ex` +- `lib/quickbeam/js/parser/error.ex` +- `test/js/parser/` +- `bench/js_parser_compat.exs` +- `autoresearch.sh` +- `autoresearch.md` + +Benchmark inputs are read-only: +- `test/vm/test_language.js` +- `test/test262/test/language/**/*.js` + +## Off Limits +- Zig/C/NIF files. +- External parser generators or native parser replacements. +- New dependencies for the parser compatibility loop. +- Benchmark overfitting or exact string/file special cases. + +## Experiment Workflow +1. Run `./autoresearch.sh` or inspect current `ERROR_MESSAGE` / `ERROR_FILE` output. +2. Pick the broadest real syntax gap visible in the sample. +3. Add focused tests under `test/js/parser//..._test.exs` with `@moduletag :quickjs_port`. +4. Fix parser/lexer behavior generally. +5. Run `mix format`, `mix compile --warnings-as-errors`, `mix test test/js/parser`, then `./autoresearch.sh`. +6. Keep only changes that reduce the primary metric without regressing `test_language_errors`, parser tests, or QuickJS-port coverage. + +## Current Known Gap Clusters +The full standalone non-negative Test262 corpus available in this checkout is parse-clean after excluding Test262 support fixtures. Inspect the current `ERROR_MESSAGE` and `ERROR_FILE` output before choosing any future gap. + +If new Test262 files are added, rerun the benchmark and target a later slice using `TEST262_SAMPLE_OFFSET` if needed. diff --git a/autoresearch.sh b/autoresearch.sh new file mode 100755 index 000000000..54681d1c9 --- /dev/null +++ b/autoresearch.sh @@ -0,0 +1,117 @@ +#!/usr/bin/env bash +set -euo pipefail + +run_parser_tests() { + mix test test/js/parser --formatter ExUnit.CLIFormatter 2>&1 +} + +parser_output=$(run_parser_tests) +printf '%s\n' "$parser_output" + +summary=$(printf '%s\n' "$parser_output" | grep -E '[0-9]+ tests?, [0-9]+ failures?' | tail -1) +parser_tests=$(printf '%s\n' "$summary" | awk '{ for (i = 1; i <= NF; i++) if ($i ~ /^tests?,?$/) { print $(i - 1); exit } }') +quickjs_parser_tests=$(grep -REoh '@moduletag :quickjs_port|test "ports QuickJS' test/js/parser | wc -l | tr -d ' ') + +seconds=$(printf '%s\n' "$parser_output" | sed -nE 's/Finished in ([0-9.]+) seconds.*/\1/p' | tail -1) +if [[ -n "${seconds:-}" ]]; then + parser_test_ms=$(awk -v s="$seconds" 'BEGIN { printf "%.0f", s * 1000 }') +else + parser_test_ms=0 +fi + +case "${PARSER_BENCH:-compat}" in + compat) + bench_output=$(mix run bench/js_parser_compat.exs 2>&1) + ;; + perf) + bench_output=$(mix run bench/js_parser_perf.exs 2>&1) + ;; + quickjs_audit) + bench_output=$(mix run bench/js_parser_quickjs_audit.exs 2>&1) + ;; + quickjs_audit_exunit) + set +e + bench_output=$(mix test test/js/parser/quickjs_acceptance_audit_test.exs --only quickjs_acceptance_audit --formatter ExUnit.CLIFormatter 2>&1) + bench_status=$? + set -e + + if printf '%s\n' "$bench_output" | grep -qE '== Compilation error'; then + printf '%s\n' "$bench_output" + exit "$bench_status" + fi + + bench_summary=$(printf '%s\n' "$bench_output" | grep -E '[0-9]+ tests?, [0-9]+ failures?' | tail -1) + + if [[ -z "${bench_summary:-}" ]]; then + printf '%s\n' "$bench_output" + exit "$bench_status" + fi + quickjs_acceptance_files=$(printf '%s\n' "$bench_summary" | awk '{ for (i = 1; i <= NF; i++) if ($i ~ /^tests?,?$/) { print $(i - 1); exit } }') + quickjs_acceptance_mismatches=$(printf '%s\n' "$bench_summary" | awk '{ for (i = 1; i <= NF; i++) if ($i ~ /^failures?,?$/) { print $(i - 1); exit } }') + quickjs_acceptance_files=${quickjs_acceptance_files:-0} + quickjs_acceptance_mismatches=${quickjs_acceptance_mismatches:-0} + + bench_output=$(printf '%s\nMETRIC quickjs_acceptance_files=%s\nMETRIC quickjs_acceptance_mismatches=%s\n' \ + "$bench_output" "$quickjs_acceptance_files" "$quickjs_acceptance_mismatches") + ;; + quickjs_audit_sweep) + total_files=0 + total_mismatches=0 + failed=0 + sweep_output="" + + for offset in $(seq "${AUDIT_OFFSET:-0}" "${AUDIT_LIMIT:-2000}" "${AUDIT_SWEEP_MAX_OFFSET:-52000}"); do + set +e + chunk_output=$(AUDIT_OFFSET="$offset" AUDIT_LIMIT="${AUDIT_LIMIT:-2000}" AUDIT_FILE_TIMEOUT="${AUDIT_FILE_TIMEOUT:-5000}" \ + mix test test/js/parser/quickjs_acceptance_audit_test.exs --only quickjs_acceptance_audit --formatter ExUnit.CLIFormatter 2>&1) + chunk_status=$? + set -e + + if printf '%s\n' "$chunk_output" | grep -qE '== Compilation error'; then + printf '%s\n' "$chunk_output" + exit "$chunk_status" + fi + + chunk_summary=$(printf '%s\n' "$chunk_output" | grep -E '[0-9]+ tests?, [0-9]+ failures?' | tail -1) + + if [[ -z "${chunk_summary:-}" ]]; then + printf '%s\n' "$chunk_output" + exit "$chunk_status" + fi + + chunk_files=$(printf '%s\n' "$chunk_summary" | awk '{ for (i = 1; i <= NF; i++) if ($i ~ /^tests?,?$/) { print $(i - 1); exit } }') + chunk_mismatches=$(printf '%s\n' "$chunk_summary" | awk '{ for (i = 1; i <= NF; i++) if ($i ~ /^failures?,?$/) { print $(i - 1); exit } }') + chunk_files=${chunk_files:-0} + chunk_mismatches=${chunk_mismatches:-0} + total_files=$((total_files + chunk_files)) + total_mismatches=$((total_mismatches + chunk_mismatches)) + + sweep_output=$(printf '%s\nAUDIT_CHUNK offset=%s files=%s mismatches=%s status=%s' \ + "$sweep_output" "$offset" "$chunk_files" "$chunk_mismatches" "$chunk_status") + + if [[ "$chunk_status" -ne 0 ]]; then + failed=1 + sweep_output=$(printf '%s\n%s' "$sweep_output" "$chunk_output") + fi + done + + bench_output=$(printf '%s\nMETRIC quickjs_acceptance_files=%s\nMETRIC quickjs_acceptance_mismatches=%s\n' \ + "$sweep_output" "$total_files" "$total_mismatches") + + if [[ "$failed" -ne 0 ]]; then + printf '%s\n' "$bench_output" + exit 2 + fi + ;; + *) + echo "unknown PARSER_BENCH=${PARSER_BENCH}" >&2 + exit 2 + ;; +esac + +printf '%s\n' "$bench_output" + +printf 'METRIC quickjs_parser_tests=%s\n' "$quickjs_parser_tests" +printf 'METRIC parser_tests=%s\n' "$parser_tests" +printf 'METRIC parser_test_ms=%s\n' "$parser_test_ms" +printf '%s\n' "$bench_output" | grep '^METRIC ' diff --git a/bench/README.md b/bench/README.md index fd40a318f..574f509fd 100644 --- a/bench/README.md +++ b/bench/README.md @@ -17,10 +17,27 @@ Run individual benchmarks: MIX_ENV=bench mix run bench/eval_roundtrip.exs MIX_ENV=bench mix run bench/call_with_data.exs MIX_ENV=bench mix run bench/beam_call.exs +MIX_ENV=bench mix run bench/vm_compiler.exs +MIX_ENV=bench mix run bench/preact_vm.exs MIX_ENV=bench mix run bench/startup.exs MIX_ENV=bench mix run bench/concurrent.exs ``` +### Preact VM benchmark + +`bench/preact_vm.exs` bundles `bench/assets/preact_ssr.js` with Bun and compares +steady-state `QuickBEAM.VM.Interpreter.invoke/3` against +`QuickBEAM.VM.Compiler.invoke/2` on a real Preact component tree workload. +Each Benchee worker builds its own VM/runtime state once, so measurements stay +in-process and do not include cross-process heap setup on every iteration. + +`bench/preact_vm_profile.exs` writes supporting artifacts to `/tmp/`: + +- `preact_vm_render_app_quickjs.txt` +- `preact_vm_render_app_opcodes.txt` +- `preact_vm_beam_disasm.txt` +- `preact_vm_profile_summary.txt` when `:eprof` is unavailable locally + ## Results Apple M1 Pro, Elixir 1.18.4, OTP 27, Zig 0.15.2 (ReleaseFast). diff --git a/bench/assets/preact_ssr.js b/bench/assets/preact_ssr.js new file mode 100644 index 000000000..891a46662 --- /dev/null +++ b/bench/assets/preact_ssr.js @@ -0,0 +1,123 @@ +import { Fragment, cloneElement, h, toChildArray } from "preact"; + +(() => { + const createElement = h; + const clone = cloneElement; + const flatten = toChildArray; + const Frag = Fragment; + + function formatPrice(cents) { + return `$${(cents / 100).toFixed(2)}`; + } + + function Badge({ tone, text }) { + return createElement("span", { class: `badge badge-${tone}` }, text); + } + + function Stat({ label, value }) { + return createElement( + "div", + { class: "stat" }, + createElement("dt", null, label), + createElement("dd", null, value) + ); + } + + function ProductRow({ product, selectedId }) { + const selected = product.id === selectedId; + + return createElement( + "li", + { + class: selected ? "product is-selected" : "product", + "data-id": product.id, + key: product.id + }, + createElement( + "div", + { class: "product-main" }, + createElement("h3", null, product.name), + createElement("p", null, product.description), + createElement( + Frag, + null, + product.tags.map((tag, index) => + createElement(Badge, { + key: `${product.id}:${tag}:${index}`, + tone: index % 2 === 0 ? "info" : "muted", + text: tag + }) + ) + ) + ), + createElement( + "aside", + { class: "product-side" }, + Stat({ label: "Price", value: formatPrice(product.priceCents) }), + Stat({ label: "Stock", value: product.inStock ? "In stock" : "Backorder" }), + Stat({ label: "Rating", value: product.rating.toFixed(1) }) + ) + ); + } + + function ProductList({ title, subtitle, products, selectedId, footerNote }) { + const inStock = products.filter((product) => product.inStock).length; + const averagePrice = + products.reduce((sum, product) => sum + product.priceCents, 0) / products.length; + + return createElement( + "section", + { class: "catalog" }, + createElement( + "header", + { class: "catalog-header" }, + createElement("h1", null, title), + createElement("p", null, subtitle), + createElement( + "div", + { class: "catalog-meta" }, + Stat({ label: "Products", value: products.length }), + Stat({ label: "Available", value: inStock }), + Stat({ label: "Avg price", value: formatPrice(averagePrice) }) + ) + ), + createElement( + "ul", + { class: "products" }, + products.map((product) => ProductRow({ product, selectedId })) + ), + createElement("footer", { class: "catalog-footer" }, footerNote) + ); + } + + function summarizeTree(node) { + if (node == null || typeof node === "boolean") { + return { elements: 0, text: 0, selected: 0 }; + } + + if (typeof node === "string" || typeof node === "number") { + return { elements: 0, text: String(node).length, selected: 0 }; + } + + const props = node.props || {}; + const children = flatten(props.children); + let elements = 1; + let text = 0; + let selected = props.class && props.class.includes("is-selected") ? 1 : 0; + + for (const child of children) { + const stats = summarizeTree(child); + elements += stats.elements; + text += stats.text; + selected += stats.selected; + } + + return { elements, text, selected }; + } + + return function renderApp(props) { + const tree = clone(ProductList(props), { "data-bench": "preact" }); + const stats = summarizeTree(tree); + return `${stats.elements}:${stats.text}:${stats.selected}`; + }; +})(); diff --git a/bench/compiler_vs_interpreter.exs b/bench/compiler_vs_interpreter.exs new file mode 100644 index 000000000..2a72418ec --- /dev/null +++ b/bench/compiler_vs_interpreter.exs @@ -0,0 +1,48 @@ +# Benchmark compiler vs interpreter on targeted JS patterns +# Run: MIX_ENV=bench mix run bench/compiler_vs_interpreter.exs + +alias QuickBEAM.VM.{Compiler, Heap, Interpreter} + +snippets = [ + {"numeric_loop", "let s = 0; for (let i = 0; i < 10000; i++) s += i; s;"}, + {"object_field", "let o = {a: 1, b: 2, c: 3}; let s = 0; for (let i = 0; i < 10000; i++) s += o.a + o.b + o.c; s;"}, + {"function_call", + "function f(x) { return x + 1; } let s = 0; for (let i = 0; i < 10000; i++) s += f(i); s;"}, + {"closure", + "function make(n) { return function(x) { return x + n; }; } var add3 = make(3); let s = 0; for (let i = 0; i < 10000; i++) s += add3(i); s;"}, + {"array_loop", + "let a = [1,2,3,4,5]; let s = 0; for (let i = 0; i < 10000; i++) s += a[i % 5]; s;"}, + {"string_concat", "let s = ''; for (let i = 0; i < 1000; i++) s += 'x'; s.length;"} +] + +Heap.reset() +{:ok, rt} = QuickBEAM.start(apis: false, mode: :beam) + +cases = + for {name, source} <- snippets do + + # Wrap in a function for repeatable invocation + wrapped = "(function() { #{source} })" + {:ok, bench_fun} = QuickBEAM.eval(rt, wrapped, mode: :beam) + + # Warm up + Enum.each(1..5, fn _ -> Compiler.invoke(bench_fun, []) end) + + {name, bench_fun} + end + +benchmarks = + Enum.flat_map(cases, fn {name, bench_fun} -> + [ + {"#{name}/compiler", fn -> {:ok, _} = Compiler.invoke(bench_fun, []) end}, + {"#{name}/interpreter", fn -> Interpreter.invoke(bench_fun, [], 1_000_000_000) end} + ] + end) + |> Map.new() + +Benchee.run( + benchmarks, + warmup: String.to_integer(System.get_env("BENCH_WARMUP", "2")), + time: String.to_integer(System.get_env("BENCH_TIME", "5")), + print: [configuration: false] +) diff --git a/bench/js_parser_compat.exs b/bench/js_parser_compat.exs new file mode 100644 index 000000000..0b37f7154 --- /dev/null +++ b/bench/js_parser_compat.exs @@ -0,0 +1,190 @@ +defmodule ParserCompatBench do + @moduledoc false + + @default_sample_limit 60_000 + @default_error_limit 40 + @default_test262_glob "test/test262/test/**/*.js" + @test_language_path "test/vm/test_language.js" + + def run do + test_language_result = parse_file(@test_language_path, :script) + sample_files = sample_files() + sample_results = Enum.map(sample_files, &parse_sample_file/1) + + print_summary(test_language_result, sample_results) + print_error_clusters(sample_results) + print_error_files(sample_results) + print_metrics(test_language_result, sample_results) + end + + defp sample_files do + test262_glob() + |> Path.wildcard() + |> Enum.sort() + |> Enum.reject(&negative_test?/1) + |> Enum.drop(sample_offset()) + |> Enum.take(sample_limit()) + |> Enum.reject(&support_fixture?/1) + end + + defp parse_sample_file(path) do + source = File.read!(path) + parse_source(path, source, source_type(path, source)) + end + + defp parse_file(path, source_type) do + parse_source(path, File.read!(path), source_type) + end + + defp parse_source(path, source, source_type) do + case QuickBEAM.JS.Parser.parse(source, source_type: source_type) do + {:ok, _program} -> + %{path: path, source_type: source_type, status: :ok, errors: []} + + {:error, _program, errors} -> + %{path: path, source_type: source_type, status: :error, errors: errors} + end + end + + defp source_type(path, source) do + cond do + metadata_module?(source) -> :module + script_code_fixture?(path) -> :script + String.contains?(path, "/module-code/") -> :module + static_module_syntax?(source) -> :module + true -> :script + end + end + + defp metadata_module?(source) do + Regex.match?(~r/flags:\s*\[[^\]]*\bmodule\b/, source) + end + + defp script_code_fixture?(path), do: String.contains?(Path.basename(path), "script-code") + + defp static_module_syntax?(source) do + Regex.match?(~r/^\s*import\s+(?:[\w*{]|["'])/m, source) or + Regex.match?(~r/^\s*export\s+/m, source) + end + + defp negative_test?(path) do + path |> File.read!() |> String.contains?("negative:") + end + + defp support_fixture?(path), do: String.ends_with?(path, "_FIXTURE.js") + + defp print_summary(test_language_result, sample_results) do + test_language_errors = test_language_result.errors + test_language_messages = unique_messages([test_language_result]) + sample_failures = failures(sample_results) + + IO.puts("case,status,errors,unique_messages,files,error_files") + + IO.puts( + "test_language,#{test_language_result.status},#{length(test_language_errors)},#{length(test_language_messages)},1,#{if test_language_result.status == :error, do: 1, else: 0}" + ) + + IO.puts( + "test262_language_sample,#{sample_status(sample_results)},#{error_count(sample_results)},#{length(unique_messages(sample_results))},#{length(sample_results)},#{length(sample_failures)}" + ) + end + + defp print_error_clusters(sample_results) do + sample_results + |> failures() + |> Enum.flat_map(fn result -> Enum.map(result.errors, & &1.message) end) + |> Enum.frequencies() + |> Enum.sort_by(fn {message, count} -> {-count, message} end) + |> Enum.take(20) + |> Enum.each(fn {message, count} -> + IO.puts("ERROR_MESSAGE #{count} #{message}") + end) + + sample_results + |> failures() + |> Enum.map(&directory_bucket/1) + |> Enum.frequencies() + |> Enum.sort_by(fn {bucket, count} -> {-count, bucket} end) + |> Enum.take(20) + |> Enum.each(fn {bucket, count} -> + IO.puts("ERROR_DIR #{count} #{bucket}") + end) + end + + defp print_error_files(sample_results) do + sample_results + |> failures() + |> Enum.take(error_limit()) + |> Enum.each(fn result -> + first = hd(result.errors) + + IO.puts( + "ERROR_FILE #{result.path} #{first.line}:#{first.column} #{first.message} total=#{length(result.errors)} source_type=#{result.source_type}" + ) + end) + end + + defp print_metrics(test_language_result, sample_results) do + sample_failures = failures(sample_results) + + IO.puts("METRIC test262_language_sample_errors=#{error_count(sample_results)}") + IO.puts("METRIC test262_language_sample_error_files=#{length(sample_failures)}") + + IO.puts( + "METRIC test262_language_sample_unique_errors=#{length(unique_messages(sample_results))}" + ) + + IO.puts("METRIC test262_language_sample_files=#{length(sample_results)}") + IO.puts("METRIC test262_language_sample_module_files=#{module_count(sample_results)}") + IO.puts("METRIC test_language_errors=#{length(test_language_result.errors)}") + + IO.puts( + "METRIC test_language_unique_errors=#{length(unique_messages([test_language_result]))}" + ) + + IO.puts( + "METRIC test_language_parse_ok=#{if test_language_result.status == :ok, do: 1, else: 0}" + ) + end + + defp failures(results), do: Enum.filter(results, &(&1.status == :error)) + + defp error_count(results) do + results |> failures() |> Enum.map(&length(&1.errors)) |> Enum.sum() + end + + defp unique_messages(results) do + results + |> failures() + |> Enum.flat_map(fn result -> Enum.map(result.errors, & &1.message) end) + |> Enum.uniq() + end + + defp sample_status(results) do + if Enum.any?(results, &(&1.status == :error)), do: :error, else: :ok + end + + defp module_count(results), do: Enum.count(results, &(&1.source_type == :module)) + + defp directory_bucket(%{path: path}) do + path + |> Path.split() + |> Enum.take(6) + |> Path.join() + end + + defp test262_glob, do: System.get_env("TEST262_GLOB", @default_test262_glob) + + defp sample_limit, do: env_integer("TEST262_SAMPLE_LIMIT", @default_sample_limit) + defp sample_offset, do: env_integer("TEST262_SAMPLE_OFFSET", 0) + defp error_limit, do: env_integer("TEST262_ERROR_LIMIT", @default_error_limit) + + defp env_integer(name, default) do + case System.get_env(name) do + nil -> default + value -> String.to_integer(value) + end + end +end + +ParserCompatBench.run() diff --git a/bench/js_parser_perf.exs b/bench/js_parser_perf.exs new file mode 100644 index 000000000..aeefed164 --- /dev/null +++ b/bench/js_parser_perf.exs @@ -0,0 +1,123 @@ +defmodule ParserPerfBench do + @moduledoc false + + @default_sample_limit 60_000 + @default_test262_glob "test/test262/test/**/*.js" + + def run do + inputs = load_inputs() + repeat = repeat_count() + + runs = Enum.map(1..repeat, fn _run -> timed_parse(inputs) end) + best = Enum.min_by(runs, & &1.elapsed_us) + + failures = Enum.filter(best.results, &match?({:error, _, _}, &1.result)) + total_bytes = Enum.reduce(inputs, 0, &(&1.bytes + &2)) + total_ms = div(best.elapsed_us, 1_000) + + files_per_second = + if best.elapsed_us == 0, do: 0.0, else: length(inputs) * 1_000_000 / best.elapsed_us + + IO.puts("files=#{length(inputs)}") + IO.puts("bytes=#{total_bytes}") + IO.puts("errors=#{length(failures)}") + IO.puts("repeat=#{repeat}") + IO.puts("total_ms=#{total_ms}") + IO.puts("files_per_second=#{Float.round(files_per_second, 2)}") + + Enum.take(failures, 20) + |> Enum.each(fn %{path: path, result: {:error, _program, errors}} -> + first = hd(errors) + + IO.puts( + "ERROR_FILE #{path} #{first.line}:#{first.column} #{first.message} total=#{length(errors)}" + ) + end) + + IO.puts("METRIC total_ms=#{total_ms}") + IO.puts("METRIC parser_files=#{length(inputs)}") + IO.puts("METRIC parser_bytes=#{total_bytes}") + IO.puts("METRIC parser_errors=#{length(failures)}") + IO.puts("METRIC parser_files_per_second=#{Float.round(files_per_second, 2)}") + IO.puts("METRIC parser_perf_repeats=#{repeat}") + + if failures == [], do: :ok, else: System.halt(1) + end + + defp timed_parse(inputs) do + {elapsed_us, results} = + :timer.tc(fn -> + Enum.map(inputs, fn input -> + result = QuickBEAM.JS.Parser.parse(input.source, source_type: input.source_type) + %{path: input.path, result: result} + end) + end) + + %{elapsed_us: elapsed_us, results: results} + end + + defp load_inputs do + sample_files() + |> Enum.map(fn path -> + source = File.read!(path) + + %{ + path: path, + source: source, + bytes: byte_size(source), + source_type: source_type(path, source) + } + end) + end + + defp sample_files do + test262_glob() + |> Path.wildcard() + |> Enum.sort() + |> Enum.reject(&negative_test?/1) + |> Enum.drop(sample_offset()) + |> Enum.take(sample_limit()) + |> Enum.reject(&support_fixture?/1) + end + + defp source_type(path, source) do + cond do + metadata_module?(source) -> :module + script_code_fixture?(path) -> :script + String.contains?(path, "/module-code/") -> :module + static_module_syntax?(source) -> :module + true -> :script + end + end + + defp metadata_module?(source) do + Regex.match?(~r/flags:\s*\[[^\]]*\bmodule\b/, source) + end + + defp script_code_fixture?(path), do: String.contains?(Path.basename(path), "script-code") + + defp static_module_syntax?(source) do + Regex.match?(~r/^\s*import\s+(?:[\w*{]|["'])/m, source) or + Regex.match?(~r/^\s*export\s+/m, source) + end + + defp negative_test?(path) do + path |> File.read!() |> String.contains?("negative:") + end + + defp support_fixture?(path), do: String.ends_with?(path, "_FIXTURE.js") + + defp test262_glob, do: System.get_env("TEST262_GLOB", @default_test262_glob) + defp sample_limit, do: env_integer("TEST262_SAMPLE_LIMIT", @default_sample_limit) + defp sample_offset, do: env_integer("TEST262_SAMPLE_OFFSET", 0) + defp repeat_count, do: env_integer("PARSER_PERF_REPEAT", 1) + + defp env_integer(name, default) do + case System.get_env(name) do + nil -> default + value -> String.to_integer(value) + end + end +end + +ParserPerfBench.run() diff --git a/bench/js_parser_quickjs_audit.exs b/bench/js_parser_quickjs_audit.exs new file mode 100644 index 000000000..9dfa439ee --- /dev/null +++ b/bench/js_parser_quickjs_audit.exs @@ -0,0 +1,87 @@ +Mix.Task.run("app.start") + +limit = String.to_integer(System.get_env("AUDIT_LIMIT") || "2000") +offset = String.to_integer(System.get_env("AUDIT_OFFSET") || "28000") + +metadata = fn source -> + yaml = + case Regex.run(~r{/\*---\n(.*?)\n---\*/}s, source, capture: :all_but_first) do + [yaml] -> yaml + _ -> "" + end + + flags = + case Regex.run(~r/^flags:\s*\[(.*?)\]$/m, yaml, capture: :all_but_first) do + [flags] -> flags + _ -> "" + end + + negative_phase = + case Regex.run(~r/negative:\s*\n\s*phase:\s*(\w+)/, yaml, capture: :all_but_first) do + [phase] -> phase + _ -> nil + end + + %{flags: flags, negative_phase: negative_phase} +end + +module_file? = fn path, source, flags -> + String.contains?(flags, "module") or + (String.contains?(path, "/module-code/") and not String.contains?(Path.basename(path), "script-code")) or + Regex.match?(~r/^\s*(import|export)\b/m, source) +end + +files = + "test/test262/test/**/*.js" + |> Path.wildcard() + |> Enum.reject(&String.ends_with?(&1, "_FIXTURE.js")) + |> Enum.sort() + |> Enum.drop(offset) + |> Enum.take(limit) + +{:ok, nif} = QuickBEAM.start(apis: false) + +mismatches = + for file <- files, reduce: [] do + acc -> + source = File.read!(file) + meta = metadata.(source) + + if module_file?.(file, source, meta.flags) do + acc + else + quickjs = + case QuickBEAM.compile(nif, source) do + {:ok, _} -> :ok + {:error, %QuickBEAM.JSError{name: name, message: message}} -> {:error, name, message} + end + + beam = + case QuickBEAM.JS.Parser.parse(source) do + {:ok, _} -> :ok + {:error, _program, errors} -> {:error, Enum.map(errors, & &1.message)} + end + + if (quickjs == :ok) == (beam == :ok) do + acc + else + [%{file: file, quickjs: quickjs, beam: beam, negative_phase: meta.negative_phase} | acc] + end + end + end + +QuickBEAM.stop(nif) + +mismatches = Enum.reverse(mismatches) + +IO.puts("quickjs_acceptance_files=#{length(files)} quickjs_acceptance_mismatches=#{length(mismatches)}") + +for mismatch <- Enum.take(mismatches, 80) do + IO.puts("MISMATCH #{mismatch.file}") + IO.puts(" negative_phase=#{inspect(mismatch.negative_phase)}") + IO.puts(" quickjs=#{inspect(mismatch.quickjs, limit: :infinity)}") + IO.puts(" beam=#{inspect(mismatch.beam, limit: :infinity)}") +end + +IO.puts("METRIC quickjs_acceptance_files=#{length(files)}") +IO.puts("METRIC quickjs_acceptance_mismatches=#{length(mismatches)}") diff --git a/bench/js_parser_vs_quickjs.exs b/bench/js_parser_vs_quickjs.exs new file mode 100644 index 000000000..73329160a --- /dev/null +++ b/bench/js_parser_vs_quickjs.exs @@ -0,0 +1,80 @@ +cases = [ + {"empty", ""}, + {"small_expression", "let value = 1 + 2 * 3; value++;"}, + {"function_control", "function fib(n) { if (n <= 1) return n; return fib(n - 1) + fib(n - 2); } for (let i = 0; i < 10; i++) fib(i);"}, + {"class_private", "class Base { f() { return 1; } } class Derived extends Base { #x = 1; constructor() { super(); this.#x++; } get value() { return super.f() + this.#x; } }"}, + {"test_language", File.read!("test/vm/test_language.js")} +] + +{:ok, rt} = QuickBEAM.start(mode: :native, web: false) + +parse_elixir = fn source -> + case QuickBEAM.JS.Parser.parse(source) do + {:ok, _ast} -> :ok + {:error, _ast, _errors} -> :error + end +end + +compile_quickjs = fn source -> + case QuickBEAM.compile(rt, source) do + {:ok, _bytecode} -> :ok + {:error, _error} -> :error + end +end + +measure = fn fun, source, iterations -> + for _ <- 1..3, do: fun.(source) + :erlang.garbage_collect() + + samples = + for _ <- 1..9 do + {us, statuses} = :timer.tc(fn -> for _ <- 1..iterations, do: fun.(source) end) + {us / iterations, Enum.frequencies(statuses)} + end + + per_iter = samples |> Enum.map(&elem(&1, 0)) |> Enum.sort() + median = Enum.at(per_iter, div(length(per_iter), 2)) + status = samples |> List.last() |> elem(1) + {median, status} +end + +IO.puts("case,bytes,iterations,elixir_parser_median_us,quickjs_compile_median_us,ratio_qjs_over_elixir,elixir_status,quickjs_status") + +results = + for {name, source} <- cases do + iterations = + cond do + byte_size(source) == 0 -> 10_000 + byte_size(source) < 1_000 -> 5_000 + byte_size(source) < 10_000 -> 500 + true -> 10 + end + + {elixir_median, elixir_status} = measure.(parse_elixir, source, iterations) + {quickjs_median, quickjs_status} = measure.(compile_quickjs, source, iterations) + ratio = quickjs_median / max(elixir_median, 0.001) + + IO.puts( + [ + name, + Integer.to_string(byte_size(source)), + Integer.to_string(iterations), + :erlang.float_to_binary(elixir_median, decimals: 2), + :erlang.float_to_binary(quickjs_median, decimals: 2), + :erlang.float_to_binary(ratio, decimals: 2), + inspect(elixir_status), + inspect(quickjs_status) + ] + |> Enum.join(",") + ) + + {name, elixir_median, quickjs_median} + end + +test_language_us = results |> Enum.find(&(elem(&1, 0) == "test_language")) |> elem(1) +class_private_us = results |> Enum.find(&(elem(&1, 0) == "class_private")) |> elem(1) +function_control_us = results |> Enum.find(&(elem(&1, 0) == "function_control")) |> elem(1) + +IO.puts("METRIC test_language_parser_us=#{round(test_language_us)}") +IO.puts("METRIC class_private_parser_us=#{round(class_private_us)}") +IO.puts("METRIC function_control_parser_us=#{round(function_control_us)}") diff --git a/bench/preact_vm_profile.exs b/bench/preact_vm_profile.exs new file mode 100644 index 000000000..2b37e2738 --- /dev/null +++ b/bench/preact_vm_profile.exs @@ -0,0 +1,55 @@ +Code.require_file("support/preact_vm.exs", __DIR__) + +source = Bench.PreactVM.bundle_source!() +props = Bench.PreactVM.props() +{:ok, rt} = Bench.PreactVM.start_runtime() + +%{parsed: parsed, render_app: render_app, render_fun: render_fun, js_props: js_props} = + Bench.PreactVM.build_case!(rt, source, props) + +Bench.PreactVM.warmup(render_app, js_props, 30) + +render_app_qjs = Bench.PreactVM.find_vm_function(parsed.value, &(&1.name == "renderApp")) +beam = Bench.PreactVM.beam_disasm!(render_fun) + +File.write!( + "/tmp/preact_vm_render_app_quickjs.txt", + inspect(render_app_qjs, pretty: true, limit: :infinity) +) + +File.write!( + "/tmp/preact_vm_render_app_opcodes.txt", + inspect(Bench.PreactVM.opcode_histogram(render_app_qjs), pretty: true, limit: :infinity) +) + +File.write!("/tmp/preact_vm_beam_disasm.txt", inspect(beam, pretty: true, limit: :infinity)) + +iterations = System.get_env("PROFILE_ITERS", "200") |> String.to_integer() + +case :code.which(:eprof) do + path when is_list(path) -> + :eprof.start() + + :eprof.profile(fn -> + Enum.each(1..iterations, fn _ -> + Bench.PreactVM.run_compiler!(render_app, js_props) + end) + end) + + :eprof.analyze([:total]) + + :non_existing -> + {elapsed_us, _} = + :timer.tc(fn -> + Enum.each(1..iterations, fn _ -> + Bench.PreactVM.run_compiler!(render_app, js_props) + end) + end) + + File.write!( + "/tmp/preact_vm_profile_summary.txt", + "eprof unavailable on this Erlang installation\niterations=#{iterations}\nelapsed_us=#{elapsed_us}\n" + ) +end + +QuickBEAM.stop(rt) diff --git a/bench/support/preact_vm.exs b/bench/support/preact_vm.exs new file mode 100644 index 000000000..608c39168 --- /dev/null +++ b/bench/support/preact_vm.exs @@ -0,0 +1,148 @@ +defmodule Bench.PreactVM do + alias QuickBEAM.Bytecode + alias QuickBEAM.JS.Bundler + alias QuickBEAM.VM.{Compiler, Heap, Interpreter} + + def bundle_source! do + entry = Path.expand("../assets/preact_ssr.js", __DIR__) + :ok = ensure_bench_deps!() + {:ok, bundled} = Bundler.bundle_file(entry, format: :esm) + bundled + end + + def props do + %{ + "title" => "Featured products", + "subtitle" => "Preact component tree benchmark", + "selectedId" => 18, + "footerNote" => "Updated every 5 minutes", + "products" => + for id <- 1..48 do + %{ + "id" => id, + "name" => "Product #{id}", + "description" => + "A compact component benchmark payload with nested props, tags, and metadata.", + "priceCents" => 1_995 + id * 37, + "inStock" => rem(id, 5) != 0, + "rating" => 3.5 + rem(id, 7) * 0.2, + "tags" => ["fast", "vm", if(rem(id, 2) == 0, do: "featured", else: "sale")] + } + end + } + end + + def start_runtime, do: QuickBEAM.start(apis: false, mode: :beam) + + def build_case!(rt, source, props) do + {:ok, bytecode} = QuickBEAM.compile(rt, source) + {:ok, parsed} = QuickBEAM.VM.Bytecode.decode(bytecode) + cache_function_atoms(parsed) + + :ok = QuickBEAM.set_global(rt, "__bench_props", props, mode: :beam) + js_props = Heap.get_persistent_globals() |> Map.fetch!("__bench_props") + + {:ok, {:closure, _, render_fun} = render_app} = QuickBEAM.eval(rt, source, mode: :beam) + + %{parsed: parsed, render_app: render_app, render_fun: render_fun, js_props: js_props} + end + + def ensure_case!(source, props) do + key = {:preact_vm_case, :erlang.phash2(source)} + + case Process.get(key) do + %{render_app: _render_app, js_props: _js_props} = case_data -> + case_data + + _ -> + {:ok, rt} = start_runtime() + case_data = Map.put(build_case!(rt, source, props), :rt, rt) + warmup(case_data.render_app, case_data.js_props) + Process.put(key, case_data) + case_data + end + end + + def run_interpreter!(render_app, props), + do: Interpreter.invoke(render_app, [props], 1_000_000_000) + + def run_compiler!(render_app, props) do + {:ok, result} = Compiler.invoke(render_app, [props]) + result + end + + def warmup(render_app, props, iterations \\ 20) do + Enum.each(1..iterations, fn _ -> run_compiler!(render_app, props) end) + end + + def beam_disasm!(fun) do + {:ok, beam} = Compiler.disasm(fun) + beam + end + + def find_function(%Bytecode{} = root, name) do + cond do + root.name == name -> + root + + true -> + Enum.find_value(root.cpool, fn + %Bytecode{} = inner -> find_function(inner, name) + _ -> nil + end) + end + end + + def find_vm_function(%QuickBEAM.VM.Bytecode.Function{} = root, pred) do + cond do + pred.(root) -> + root + + true -> + Enum.find_value(root.constants, fn + %QuickBEAM.VM.Bytecode.Function{} = inner -> find_vm_function(inner, pred) + _ -> nil + end) + end + end + + def opcode_histogram(%Bytecode{} = fun) do + fun.opcodes + |> Enum.frequencies_by(&elem(&1, 1)) + |> Enum.sort_by(fn {_op, count} -> -count end) + end + + def opcode_histogram(%QuickBEAM.VM.Bytecode.Function{} = fun) do + {:ok, ops} = QuickBEAM.VM.Decoder.decode(fun.byte_code, fun.arg_count) + + ops + |> Enum.frequencies_by(fn {op, _args} -> elem(QuickBEAM.VM.Opcodes.info(op), 0) end) + |> Enum.sort_by(fn {_op, count} -> -count end) + end + + defp cache_function_atoms(parsed) do + cache_fun = + fn + %QuickBEAM.VM.Bytecode.Function{} = fun, atoms, recur -> + Process.put({:qb_fn_atoms, fun.byte_code}, atoms) + + Enum.each(fun.constants, fn + %QuickBEAM.VM.Bytecode.Function{} = inner -> recur.(inner, atoms, recur) + _ -> :ok + end) + + _other, _atoms, _recur -> + :ok + end + + cache_fun.(parsed.value, parsed.atoms, cache_fun) + end + + defp ensure_bench_deps! do + if "preact" in NPM.NodeModules.installed() do + :ok + else + NPM.install() + end + end +end diff --git a/bench/vm.exs b/bench/vm.exs new file mode 100644 index 000000000..17819ab31 --- /dev/null +++ b/bench/vm.exs @@ -0,0 +1,42 @@ +# Benchmark: NIF (QuickJS native) vs BEAM compiler vs BEAM interpreter +# on Preact SSR — real-world workload. +# +# NIF uses QuickBEAM.call (GenServer round-trip). +# VM paths are in-process (no GenServer). + +Code.require_file("support/preact_vm.exs", __DIR__) + +source = Bench.PreactVM.bundle_source!() +props = Bench.PreactVM.props() + +# ── BEAM VM (interpreter + compiler share the same decoded bytecode) ── + +beam_run = fn invoke -> + %{render_app: app, js_props: jp} = Bench.PreactVM.ensure_case!(source, props) + invoke.(app, jp) +end + +# ── NIF (QuickJS native via Zig NIF) ── + +nif_source = String.replace(source, "(() => {", "var renderApp = (() => {", global: false) + +{:ok, nif_rt} = QuickBEAM.start(apis: false) +{:ok, _} = QuickBEAM.eval(nif_rt, nif_source) +{:ok, _} = QuickBEAM.call(nif_rt, "renderApp", [props]) + +# ── run ── + +Benchee.run( + %{ + "NIF" => fn _ -> {:ok, _} = QuickBEAM.call(nif_rt, "renderApp", [props]) end, + "VM.Compiler" => fn _ -> beam_run.(&Bench.PreactVM.run_compiler!/2) end, + "VM.Interpreter" => fn _ -> beam_run.(&Bench.PreactVM.run_interpreter!/2) end + }, + inputs: %{"preact_ssr" => nil}, + warmup: System.get_env("BENCH_WARMUP", "2") |> String.to_integer(), + time: System.get_env("BENCH_TIME", "5") |> String.to_integer(), + memory_time: System.get_env("BENCH_MEMORY_TIME", "2") |> String.to_integer(), + print: [configuration: false] +) + +QuickBEAM.stop(nif_rt) diff --git a/bun.lock b/bun.lock index b63420994..51ad55f9d 100644 --- a/bun.lock +++ b/bun.lock @@ -4,6 +4,12 @@ "workspaces": { "": { "name": "quickbeam", + "dependencies": { + "@node-rs/argon2": "^2.0.2", + "@node-rs/bcrypt": "^1.10.7", + "@node-rs/crc32": "^1.10.6", + "sqlite-napi": "^1.0.1", + }, "devDependencies": { "jscpd": "^4.0.8", "oxfmt": "^0.37.0", @@ -23,6 +29,12 @@ "@colors/colors": ["@colors/colors@1.5.0", "", {}, "sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ=="], + "@emnapi/core": ["@emnapi/core@1.10.0", "", { "dependencies": { "@emnapi/wasi-threads": "1.2.1", "tslib": "^2.4.0" } }, "sha512-yq6OkJ4p82CAfPl0u9mQebQHKPJkY7WrIuk205cTYnYe+k2Z8YBh11FrbRG/H6ihirqcacOgl2BIO8oyMQLeXw=="], + + 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QuickBEAM.Runtime + alias QuickBEAM.VM.Bytecode, as: BeamBytecode + alias QuickBEAM.VM.Compiler, as: BeamCompiler + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Interpreter + alias QuickBEAM.VM.PromiseState, as: Promise + alias QuickBEAM.VM.Runtime, as: BeamRuntime + @moduledoc """ QuickJS-NG JavaScript engine embedded in the BEAM. @@ -58,7 +71,7 @@ defmodule QuickBEAM do @doc false def child_spec(opts) do - QuickBEAM.Runtime.child_spec(opts) + Runtime.child_spec(opts) end @doc """ @@ -88,7 +101,17 @@ defmodule QuickBEAM do """ @spec start(keyword()) :: GenServer.on_start() def start(opts \\ []) do - QuickBEAM.Runtime.start_link(opts) + opts = + if Keyword.has_key?(opts, :mode) do + opts + else + case System.get_env("QUICKBEAM_MODE") do + "beam" -> Keyword.put(opts, :mode, :beam) + _ -> opts + end + end + + Runtime.start_link(opts) end @doc """ @@ -127,7 +150,514 @@ defmodule QuickBEAM do """ @spec eval(runtime(), String.t(), keyword()) :: js_result() def eval(runtime, code, opts \\ []) do - QuickBEAM.Runtime.eval(runtime, code, opts) + if resolve_mode(runtime, opts) == :beam do + eval_beam(runtime, code, opts) + else + Runtime.eval(runtime, code, opts) + end + end + + defp resolve_mode(runtime, opts) do + case Keyword.get(opts, :mode) do + nil -> + case Heap.get_runtime_mode(runtime) do + nil -> + mode = + try do + GenServer.call(runtime, :get_mode, 1000) + catch + :exit, _ -> :nif + end + + Heap.put_runtime_mode(runtime, mode) + mode + + cached -> + cached + end + + mode -> + mode + end + end + + defp eval_beam(runtime, code, opts) do + # Deliver any pending BEAM messages before running JS + deliver_pending_beam_messages(runtime) + + handler_globals = + case Heap.get_handler_globals() do + nil -> + handlers = + try do + GenServer.call(runtime, :get_handlers, 1000) + catch + :exit, _ -> %{} + end + + globals = + for {name, handler} <- handlers, into: %{} do + {name, + {:builtin, name, + fn args -> + case handler do + {:with_caller, fun} -> fun.(args, self()) + fun when is_function(fun, 1) -> fun.(args) + _ -> :undefined + end + end}} + end + + Heap.put_handler_globals(globals) + globals + + cached -> + cached + end + + compile_code = maybe_wrap_async(code) + + case Runtime.compile(runtime, compile_code, Keyword.get(opts, :filename, "")) do + {:ok, bc} -> + case BeamBytecode.decode(bc) do + {:ok, parsed} -> + result = + Interpreter.eval( + parsed.value, + [], + %{gas: 1_000_000_000, runtime_pid: runtime, globals: handler_globals}, + parsed.atoms + ) + + Promise.drain_microtasks() + converted = convert_beam_result(result) + Heap.gc(beam_gc_roots(result) ++ global_gc_roots()) + converted + + {:error, _} = err -> + err + end + + {:error, _} = err -> + err + end + end + + defp maybe_wrap_async(code) do + if String.contains?(code, "await") do + wrap_as_async(String.trim(code)) + else + code + end + end + + # Wraps top-level code containing `await` in an async IIFE. + # Finds the last top-level statement and prepends `return`. + defp wrap_as_async(code) do + stmts = split_top_level_statements(code) + + case stmts do + [] -> + code + + _ -> + last = List.last(stmts) + rest = Enum.drop(stmts, -1) + + {rest2, last2} = maybe_split_block_tail(rest, last) + + last_with_return = + if needs_return?(last2) do + stripped = last2 |> String.trim() |> String.trim_trailing(";") + "return #{stripped}" + else + maybe_wrap_block_return(last2) + end + + body = (rest2 ++ [last_with_return]) |> Enum.join("\n") + "(async () => {\n#{body}\n})()" + end + end + + # Heuristic: returns true if this statement should be prefixed with `return`. + # We return if it's an expression statement (not a declaration/control-flow). + @no_return_prefixes ~w[const let var function class return if for while do switch try throw import export async] + + defp maybe_wrap_block_return(stmt) do + trimmed = String.trim(stmt) + + if String.starts_with?(trimmed, "try ") or String.starts_with?(trimmed, "try{") do + inject_try_catch_returns(trimmed) + else + stmt + end + end + + defp inject_try_catch_returns(try_stmt) do + # Find catch block and inject return before its last expression + case Regex.run(~r/^(try\s*\{.*\})\s*(catch\s*\([^)]*\)\s*\{)(.*)\}\s*$/s, try_stmt) do + [_, try_part, catch_header, catch_body] -> + last_catch_expr = catch_body |> String.trim() |> String.trim_trailing(";") + + if last_catch_expr != "" and not String.starts_with?(last_catch_expr, "return ") do + "#{try_part} #{catch_header} return #{last_catch_expr}; }" + else + try_stmt + end + + _ -> + try_stmt + end + end + + defp maybe_split_block_tail(rest, last) do + trimmed = String.trim_leading(last) + starts_with_block = Enum.any?(~w[while for if switch do try], &String.starts_with?(trimmed, &1 <> " ") or String.starts_with?(trimmed, &1 <> "(")) + + if starts_with_block do + case split_block_and_tail(last) do + {block, tail} when tail != "" -> + {rest ++ [block], tail} + + _ -> + {rest, last} + end + else + {rest, last} + end + end + + defp split_block_and_tail(stmt) do + chars = String.to_charlist(stmt) + find_last_block_end(chars, 0, 0, 0, 0, [], 0, -1) + end + + defp find_last_block_end([], _p, _b, _br, _s, acc, _pos, last_depth0_close) do + if last_depth0_close > 0 do + all = IO.iodata_to_binary(Enum.reverse(acc)) + block = String.slice(all, 0, last_depth0_close) + tail = all |> String.slice(last_depth0_close, String.length(all)) |> String.trim() + {block, tail} + else + {"", ""} + end + end + + defp find_last_block_end([c | rest], p, b, br, in_str, acc, pos, last_depth0_close) do + {p2, b2, br2, is2, new_last} = + case {c, in_str} do + {?', 0} -> {p, b, br, 1, last_depth0_close} + {?', 1} -> {p, b, br, 0, last_depth0_close} + {?", 0} -> {p, b, br, 2, last_depth0_close} + {?", 2} -> {p, b, br, 0, last_depth0_close} + {?`, 0} -> {p, b, br, 3, last_depth0_close} + {?`, 3} -> {p, b, br, 0, last_depth0_close} + {?(, 0} -> {p + 1, b, br, 0, last_depth0_close} + {?), 0} -> {max(p - 1, 0), b, br, 0, last_depth0_close} + {?[, 0} -> {p, b + 1, br, 0, last_depth0_close} + {?], 0} -> {p, max(b - 1, 0), br, 0, last_depth0_close} + {?{, 0} -> {p, b, br + 1, 0, last_depth0_close} + {?}, 0} -> + new_br = max(br - 1, 0) + new_last = if new_br == 0 and p == 0 and b == 0, do: pos + 1, else: last_depth0_close + {p, b, new_br, 0, new_last} + _ -> {p, b, br, in_str, last_depth0_close} + end + + find_last_block_end(rest, p2, b2, br2, is2, [c | acc], pos + 1, new_last) + end + + defp needs_return?(stmt) do + trimmed = String.trim_leading(stmt) + not Enum.any?(@no_return_prefixes, &String.starts_with?(trimmed, &1 <> " ")) and + not String.starts_with?(trimmed, "//") and + not String.starts_with?(trimmed, "/*") and + trimmed != "" + end + + # Splits code into top-level statements by tracking brace/paren/bracket depth. + # Each statement is separated by `;` at depth 0, or by newlines in some cases. + defp split_top_level_statements(code) do + code + |> String.trim() + |> find_top_level_statement_ends() + |> Enum.filter(&(String.trim(&1) != "")) + end + + defp find_top_level_statement_ends(code) do + find_stmts(code, 0, 0, 0, 0, [], []) + end + + defp find_stmts(<<>>, _parens, _brackets, _braces, _in_str, current, acc) do + stmt = IO.iodata_to_binary(Enum.reverse(current)) + if String.trim(stmt) != "", do: Enum.reverse([stmt | acc]), else: Enum.reverse(acc) + end + + defp find_stmts(<>, 0, 0, 0, 0, current, acc) do + stmt = IO.iodata_to_binary(Enum.reverse([?; | current])) + find_stmts(rest, 0, 0, 0, 0, [], [stmt | acc]) + end + + defp find_stmts(<>, parens, brackets, braces, in_str, current, acc) do + {p2, b2, br2, is2} = + case {c, in_str} do + {?', 0} -> {parens, brackets, braces, 1} + {?', 1} -> {parens, brackets, braces, 0} + {?", 0} -> {parens, brackets, braces, 2} + {?", 2} -> {parens, brackets, braces, 0} + {?`, 0} -> {parens, brackets, braces, 3} + {?`, 3} -> {parens, brackets, braces, 0} + {?(, 0} -> {parens + 1, brackets, braces, 0} + {?), 0} -> {max(parens - 1, 0), brackets, braces, 0} + {?[, 0} -> {parens, brackets + 1, braces, 0} + {?], 0} -> {parens, max(brackets - 1, 0), braces, 0} + {?{, 0} -> {parens, brackets, braces + 1, 0} + {?}, 0} -> {parens, brackets, max(braces - 1, 0), 0} + _ -> {parens, brackets, braces, in_str} + end + + find_stmts(rest, p2, b2, br2, is2, [c | current], acc) + end + + defp convert_beam_result({:error, {:js_throw, {:obj, _ref} = obj}}) do + val = convert_beam_value(obj) + {:error, wrap_js_error(val)} + end + + defp convert_beam_result({:error, {:js_throw, val}}) do + {:error, wrap_js_error(convert_beam_value(val))} + end + + defp convert_beam_result({:ok, {:obj, ref}}) do + case Heap.get_obj(ref) do + %{"__promise_state__" => :rejected, "__promise_value__" => val} -> + {:error, wrap_js_error(convert_beam_value(val))} + + %{"__promise_state__" => :resolved, "__promise_value__" => val} -> + {:ok, convert_beam_value(val)} + + _ -> + {:ok, convert_beam_value({:obj, ref})} + end + end + + defp convert_beam_result({:ok, val}), do: {:ok, convert_beam_value(val)} + defp convert_beam_result({:error, _} = err), do: err + + defp wrap_js_error(val), do: JSError.from_js_value(val) + + defp beam_gc_roots({:ok, value}), do: [value] + defp beam_gc_roots({:error, {:js_throw, value}}), do: [value] + defp beam_gc_roots(_), do: [] + + defp global_gc_roots do + cache = Heap.get_global_cache() || %{} + channel_roots = broadcast_channel_gc_roots() + Map.values(cache) ++ channel_roots + end + + defp broadcast_channel_gc_roots do + case Process.get(:qb_broadcast_channels) do + nil -> + [] + + channels when is_map(channels) -> + channels + |> Map.values() + |> List.flatten() + |> Enum.flat_map(fn + {_id, ref} when is_reference(ref) -> + case Process.get(ref) do + nil -> [] + v -> [v] + end + + _ -> + [] + end) + + _ -> + [] + end + end + + defp elixir_to_js(val) when is_map(val) do + ref = make_ref() + obj = Map.new(val, fn {k, v} -> {to_string(k), elixir_to_js(v)} end) + Heap.put_obj(ref, obj) + {:obj, ref} + end + + defp elixir_to_js(val) when is_list(val) do + ref = make_ref() + Heap.put_obj(ref, Enum.map(val, &elixir_to_js/1)) + {:obj, ref} + end + + defp elixir_to_js(val), do: val + + defp convert_beam_value(:undefined), do: nil + + defp convert_beam_value({:obj, ref}) do + case Heap.get_obj(ref) do + nil -> + nil + + {:qb_arr, arr} -> + :array.to_list(arr) |> Enum.map(&convert_beam_value/1) + + list when is_list(list) -> + Enum.map(list, &convert_beam_value/1) + + map when is_map(map) -> + if Map.get(map, "__is_buffer__") == true do + extract_buffer_bytes(map) + else + map + |> Map.drop([key_order()]) + |> Map.new(fn {k, v} -> {convert_beam_key(k), convert_beam_value(v)} end) + |> Map.reject(fn {k, _} -> + is_binary(k) and String.starts_with?(k, "__") and String.ends_with?(k, "__") + end) + end + end + end + + defp convert_beam_value(list) when is_list(list), do: Enum.map(list, &convert_beam_value/1) + defp convert_beam_value(v), do: v + + defp deliver_pending_beam_messages(runtime) do + # First, deliver messages queued via send_message (which may register monitors) + try do + msgs = GenServer.call(runtime, :take_pending_messages, 1000) + + if msgs != [] do + alias QuickBEAM.VM.Runtime.Web.BeamAPI + Enum.each(msgs, fn msg -> + elixir_msg = convert_msg_to_js(msg) + BeamAPI.deliver_beam_message(elixir_msg) + end) + end + catch + :exit, _ -> :ok + end + + # Then, drain DOWN messages (after monitors may have been registered) + drain_down_messages() + end + + defp drain_down_messages do + alias QuickBEAM.VM.Runtime.Web.BeamAPI + monitors_key = :qb_beam_monitors + + receive do + {:DOWN, ref, :process, _pid, reason} -> + monitors = Process.get(monitors_key, %{}) + case Map.get(monitors, ref) do + nil -> :ok + callback -> + reason_str = case reason do + :normal -> "normal" + :killed -> "killed" + a when is_atom(a) -> Atom.to_string(a) + _ -> inspect(reason) + end + + try do + QuickBEAM.VM.Invocation.invoke_with_receiver(callback, [reason_str], :undefined) + rescue + _ -> :ok + catch + _, _ -> :ok + end + + Process.put(monitors_key, Map.delete(monitors, ref)) + end + drain_down_messages() + after + 0 -> :ok + end + end + + defp convert_msg_to_js(msg) when is_map(msg) do + Heap.wrap(Map.new(msg, fn {k, v} -> {to_string(k), convert_msg_to_js(v)} end)) + end + + defp convert_msg_to_js(msg) when is_list(msg) do + Heap.wrap(Enum.map(msg, &convert_msg_to_js/1)) + end + + defp convert_msg_to_js(nil), do: nil + defp convert_msg_to_js(true), do: true + defp convert_msg_to_js(false), do: false + defp convert_msg_to_js(n) when is_number(n), do: n + defp convert_msg_to_js(s) when is_binary(s), do: s + defp convert_msg_to_js(a) when is_atom(a), do: Atom.to_string(a) + defp convert_msg_to_js(pid) when is_pid(pid), do: pid + defp convert_msg_to_js(ref) when is_reference(ref), do: ref + defp convert_msg_to_js(_), do: nil + + defp extract_buffer_bytes(map) do + case Map.get(map, "buffer") do + {:obj, buf_ref} -> + case Heap.get_obj(buf_ref) do + bm when is_map(bm) -> + ab = Map.get(bm, "__buffer__", <<>>) + offset = Map.get(map, "byteOffset", 0) + byte_len = Map.get(map, "byteLength", byte_size(ab)) + + if byte_size(ab) >= offset + byte_len and byte_len > 0 do + binary_part(ab, offset, byte_len) + else + ab + end + + _ -> <<>> + end + + _ -> + # Fallback: try reading from the typed array's direct buffer + Map.get(map, "__buffer__", <<>>) + end + end + + defp convert_beam_key(k) when is_binary(k), do: k + defp convert_beam_key(k) when is_integer(k), do: Integer.to_string(k) + defp convert_beam_key(k), do: inspect(k) + + defp load_module_beam(runtime, name, code) do + wrapper = + "(function() { var module = {exports: {}}; var exports = module.exports; " <> + code <> "; return module.exports })()" + + case Runtime.compile(runtime, wrapper) do + {:ok, bc} -> + case BeamBytecode.decode(bc) do + {:ok, parsed} -> + case Interpreter.eval( + parsed.value, + [], + %{gas: 1_000_000_000, runtime_pid: runtime}, + parsed.atoms + ) do + {:ok, mod_exports} -> + Heap.register_module(name, mod_exports) + :ok + + {:error, {:js_throw, _}} = error -> + convert_beam_result(error) + + error -> + error + end + + error -> + error + end + + error -> + error + end end @doc """ @@ -149,7 +679,37 @@ defmodule QuickBEAM do """ @spec call(runtime(), String.t(), list(), keyword()) :: js_result() def call(runtime, fn_name, args \\ [], opts \\ []) do - QuickBEAM.Runtime.call(runtime, fn_name, args, opts) + if resolve_mode(runtime, opts) == :beam do + call_beam(runtime, fn_name, args) + else + Runtime.call(runtime, fn_name, args, opts) + end + end + + defp call_beam(_runtime, fn_name, args) do + handler_globals = Heap.get_handler_globals() || %{} + + globals = + BeamRuntime.global_bindings() + |> Map.merge(handler_globals) + |> Map.merge(Heap.get_persistent_globals()) + + case Map.get(globals, fn_name) do + nil -> + {:error, + JSError.from_js_value(%{ + "message" => "#{fn_name} is not defined", + "name" => "ReferenceError" + })} + + fun -> + try do + result = Interpreter.invoke(fun, args, 1_000_000_000) + convert_beam_result({:ok, result}) + catch + {:js_throw, val} -> convert_beam_result({:error, {:js_throw, val}}) + end + end end @doc """ @@ -167,22 +727,41 @@ defmodule QuickBEAM do """ @spec disasm(binary()) :: {:ok, QuickBEAM.Bytecode.t()} | {:error, String.t()} def disasm(bytecode) when is_binary(bytecode) do - case QuickBEAM.Native.disasm_bytecode(bytecode) do - {:ok, map} -> {:ok, QuickBEAM.Bytecode.from_map(map)} + case Native.disasm_bytecode(bytecode) do + {:ok, map} -> {:ok, Bytecode.from_map(map)} {:error, _} = error -> error end end @doc """ - Compile JavaScript source and disassemble the resulting bytecode. + Compile JavaScript source and disassemble it. + + In the default NIF mode this returns `%QuickBEAM.Bytecode{}`. In `:beam` + mode it returns the raw `:beam_disasm.file/1` result. {:ok, %QuickBEAM.Bytecode{cpool: [%QuickBEAM.Bytecode{name: "add"}]}} = QuickBEAM.disasm(rt, "function add(a, b) { return a + b }") + + {:ok, rt} = QuickBEAM.start(mode: :beam, apis: false) + {:ok, {:beam_file, _, _, _, _, _}} = + QuickBEAM.disasm(rt, "function fib(n) { if (n <= 1) return n; return fib(n - 1) + fib(n - 2) }") """ - @spec disasm(runtime(), String.t()) :: {:ok, QuickBEAM.Bytecode.t()} | {:error, term()} - def disasm(runtime, code) when is_binary(code) do - with {:ok, bytecode} <- compile(runtime, code) do - disasm(bytecode) + @spec disasm(runtime(), String.t(), keyword()) :: + {:ok, QuickBEAM.Bytecode.t() | tuple()} | {:error, term()} + def disasm(runtime, code, opts \\ []) when is_binary(code) do + if resolve_mode(runtime, opts) == :beam do + disasm_beam(runtime, code, opts) + else + with {:ok, bytecode} <- Runtime.compile(runtime, code, Keyword.get(opts, :filename, "")) do + disasm(bytecode) + end + end + end + + defp disasm_beam(runtime, code, opts) do + with {:ok, bytecode} <- Runtime.compile(runtime, code, Keyword.get(opts, :filename, "")), + {:ok, parsed} <- BeamBytecode.decode(bytecode) do + BeamCompiler.disasm(parsed.value) end end @@ -195,7 +774,7 @@ defmodule QuickBEAM do """ @spec compile(runtime(), String.t()) :: {:ok, binary()} | {:error, QuickBEAM.JSError.t()} def compile(runtime, code) do - QuickBEAM.Runtime.compile(runtime, code) + Runtime.compile(runtime, code) end @doc """ @@ -206,7 +785,7 @@ defmodule QuickBEAM do """ @spec load_bytecode(runtime(), binary()) :: js_result() def load_bytecode(runtime, bytecode) do - QuickBEAM.Runtime.load_bytecode(runtime, bytecode) + Runtime.load_bytecode(runtime, bytecode) end @doc """ @@ -219,9 +798,13 @@ defmodule QuickBEAM do iex> QuickBEAM.stop(rt) :ok """ - @spec load_module(runtime(), String.t(), String.t()) :: :ok | {:error, String.t()} - def load_module(runtime, name, code) do - QuickBEAM.Runtime.load_module(runtime, name, code) + @spec load_module(runtime(), String.t(), String.t(), keyword()) :: :ok | {:error, String.t()} + def load_module(runtime, name, code, opts \\ []) do + if resolve_mode(runtime, opts) == :beam do + load_module_beam(runtime, name, code) + else + Runtime.load_module(runtime, name, code) + end end @doc """ @@ -244,7 +827,7 @@ defmodule QuickBEAM do """ @spec load_addon(runtime(), String.t(), keyword()) :: {:ok, term()} | {:error, term()} def load_addon(runtime, path, opts \\ []) do - QuickBEAM.Runtime.load_addon(runtime, path, opts) + Runtime.load_addon(runtime, path, opts) end @doc """ @@ -261,13 +844,13 @@ defmodule QuickBEAM do """ @spec reset(runtime()) :: :ok | {:error, String.t()} def reset(runtime) do - QuickBEAM.Runtime.reset(runtime) + Runtime.reset(runtime) end @doc "Stop a runtime and free its resources." @spec stop(runtime()) :: :ok def stop(runtime) do - QuickBEAM.Runtime.stop(runtime) + Runtime.stop(runtime) end @doc """ @@ -305,7 +888,7 @@ defmodule QuickBEAM do @doc "Return QuickJS memory usage statistics." @spec memory_usage(runtime()) :: map() def memory_usage(runtime) do - QuickBEAM.Runtime.memory_usage(runtime) + Runtime.memory_usage(runtime) end @doc """ @@ -316,7 +899,21 @@ defmodule QuickBEAM do """ @spec send_message(runtime(), term()) :: :ok def send_message(runtime, message) do - QuickBEAM.Runtime.send_message(runtime, message) + # In BEAM mode, try to deliver the message synchronously to the current process's JS state + # (if it has BEAM mode active). Fall back to GenServer cast if not. + case Heap.get_global_cache() do + nil -> + # No BEAM state in this process - use GenServer + Runtime.send_message(runtime, message) + + _globals -> + # This process has BEAM state - deliver directly + js_msg = convert_msg_to_js(message) + alias QuickBEAM.VM.Runtime.Web.BeamAPI + BeamAPI.deliver_beam_message(js_msg) + # Also drain any pending DOWN messages that may have been registered + drain_down_messages() + end end @doc """ @@ -362,8 +959,14 @@ defmodule QuickBEAM do {:ok, nil} """ @spec get_global(runtime(), String.t()) :: js_result() - def get_global(runtime, name) when is_binary(name) do - GenServer.call(runtime, {:get_global, name}, :infinity) + def get_global(runtime, name, opts \\ []) when is_binary(name) do + if resolve_mode(runtime, opts) == :beam do + persistent = Heap.get_persistent_globals() + raw = Map.get(persistent, name, :undefined) + {:ok, convert_beam_value(raw)} + else + GenServer.call(runtime, {:get_global, name}, :infinity) + end end @doc """ @@ -380,8 +983,15 @@ defmodule QuickBEAM do {:ok, 3} = QuickBEAM.eval(rt, "items.length") """ @spec set_global(runtime(), String.t(), term()) :: :ok - def set_global(runtime, name, value) when is_binary(name) do - GenServer.call(runtime, {:set_global, name, value}, :infinity) + def set_global(runtime, name, value, opts \\ []) when is_binary(name) do + if resolve_mode(runtime, opts) == :beam do + persistent = Heap.get_persistent_globals() + js_val = elixir_to_js(value) + Heap.put_persistent_globals(Map.put(persistent, name, js_val)) + :ok + else + GenServer.call(runtime, {:set_global, name, value}, :infinity) + end end @doc """ @@ -413,7 +1023,7 @@ defmodule QuickBEAM do """ @spec dom_find(runtime(), String.t()) :: {:ok, tuple() | nil} def dom_find(runtime, selector) do - QuickBEAM.Runtime.dom_find(runtime, selector) + Runtime.dom_find(runtime, selector) end @doc """ @@ -428,7 +1038,7 @@ defmodule QuickBEAM do """ @spec dom_find_all(runtime(), String.t()) :: {:ok, list()} def dom_find_all(runtime, selector) do - QuickBEAM.Runtime.dom_find_all(runtime, selector) + Runtime.dom_find_all(runtime, selector) end @doc """ @@ -440,7 +1050,7 @@ defmodule QuickBEAM do """ @spec dom_text(runtime(), String.t()) :: {:ok, String.t()} def dom_text(runtime, selector) do - QuickBEAM.Runtime.dom_text(runtime, selector) + Runtime.dom_text(runtime, selector) end @doc """ @@ -454,7 +1064,7 @@ defmodule QuickBEAM do """ @spec dom_attr(runtime(), String.t(), String.t()) :: {:ok, String.t() | nil} def dom_attr(runtime, selector, attr_name) do - QuickBEAM.Runtime.dom_attr(runtime, selector, attr_name) + Runtime.dom_attr(runtime, selector, attr_name) end @doc """ @@ -466,6 +1076,6 @@ defmodule QuickBEAM do """ @spec dom_html(runtime()) :: {:ok, String.t()} def dom_html(runtime) do - QuickBEAM.Runtime.dom_html(runtime) + Runtime.dom_html(runtime) end end diff --git a/lib/quickbeam/context.ex b/lib/quickbeam/context.ex index fade773c5..429f0711b 100644 --- a/lib/quickbeam/context.ex +++ b/lib/quickbeam/context.ex @@ -79,7 +79,8 @@ defmodule QuickBEAM.Context do @spec eval(GenServer.server(), String.t(), keyword()) :: {:ok, term()} | {:error, String.t()} def eval(server, code, opts \\ []) when is_binary(code) do timeout_ms = Keyword.get(opts, :timeout, 0) - GenServer.call(server, {:eval, code, timeout_ms}, :infinity) + filename = Keyword.get(opts, :filename, "") + GenServer.call(server, {:eval, code, timeout_ms, filename}, :infinity) end @spec reset(GenServer.server()) :: :ok | {:error, String.t()} @@ -318,16 +319,42 @@ defmodule QuickBEAM.Context do # ── NIF dispatch callbacks ── - defp nif_eval(state, code, timeout), do: QuickBEAM.Native.pool_eval(state.pool_resource, state.context_id, code, timeout) - defp nif_call(state, fn_name, args, timeout), do: QuickBEAM.Native.pool_call_function(state.pool_resource, state.context_id, fn_name, args, timeout) - defp nif_dom_find(state, selector), do: QuickBEAM.Native.pool_dom_find(state.pool_resource, state.context_id, selector) - defp nif_dom_find_all(state, selector), do: QuickBEAM.Native.pool_dom_find_all(state.pool_resource, state.context_id, selector) - defp nif_dom_text(state, selector), do: QuickBEAM.Native.pool_dom_text(state.pool_resource, state.context_id, selector) - defp nif_dom_html(state), do: QuickBEAM.Native.pool_dom_html(state.pool_resource, state.context_id) - defp nif_reset(state), do: QuickBEAM.Native.pool_reset_context(state.pool_resource, state.context_id) - defp nif_get_global(state, name), do: QuickBEAM.Native.pool_get_global(state.pool_resource, state.context_id, name) - defp nif_set_global(state, name, value), do: QuickBEAM.Native.pool_define_global(state.pool_resource, state.context_id, name, value) - defp nif_send_message(state, message), do: QuickBEAM.Native.pool_send_message(state.pool_resource, state.context_id, message) + defp nif_eval(state, code, timeout, _filename \\ ""), + do: QuickBEAM.Native.pool_eval(state.pool_resource, state.context_id, code, timeout) + + defp nif_call(state, fn_name, args, timeout), + do: + QuickBEAM.Native.pool_call_function( + state.pool_resource, + state.context_id, + fn_name, + args, + timeout + ) + + defp nif_dom_find(state, selector), + do: QuickBEAM.Native.pool_dom_find(state.pool_resource, state.context_id, selector) + + defp nif_dom_find_all(state, selector), + do: QuickBEAM.Native.pool_dom_find_all(state.pool_resource, state.context_id, selector) + + defp nif_dom_text(state, selector), + do: QuickBEAM.Native.pool_dom_text(state.pool_resource, state.context_id, selector) + + defp nif_dom_html(state), + do: QuickBEAM.Native.pool_dom_html(state.pool_resource, state.context_id) + + defp nif_reset(state), + do: QuickBEAM.Native.pool_reset_context(state.pool_resource, state.context_id) + + defp nif_get_global(state, name), + do: QuickBEAM.Native.pool_get_global(state.pool_resource, state.context_id, name) + + defp nif_set_global(state, name, value), + do: QuickBEAM.Native.pool_define_global(state.pool_resource, state.context_id, name, value) + + defp nif_send_message(state, message), + do: QuickBEAM.Native.pool_send_message(state.pool_resource, state.context_id, message) @impl true def handle_info({:beam_call, call_id, handler_name, args}, state) do @@ -426,24 +453,6 @@ defmodule QuickBEAM.Context do handle_websocket_started(socket_id, pid, state) end - def handle_info({:ws_send, socket_id, kind, payload}, state) do - case Map.get(state.websockets, socket_id) do - {pid, _ref} -> GenServer.cast(pid, {:send, kind, payload}) - nil -> :ok - end - - {:noreply, state} - end - - def handle_info({:ws_close, socket_id, code, reason}, state) do - case Map.get(state.websockets, socket_id) do - {pid, _ref} -> GenServer.cast(pid, {:close, code, reason}) - nil -> :ok - end - - {:noreply, state} - end - def handle_info({:websocket_event, message}, state) do QuickBEAM.Native.pool_send_message(state.pool_resource, state.context_id, message) {:noreply, state} diff --git a/lib/quickbeam/js/bundler.ex b/lib/quickbeam/js/bundler.ex index 562d0ca4b..a7dcc520b 100644 --- a/lib/quickbeam/js/bundler.ex +++ b/lib/quickbeam/js/bundler.ex @@ -1,7 +1,7 @@ defmodule QuickBEAM.JS.Bundler do @moduledoc false - alias NPM.PackageResolver + alias NPM.Resolution.PackageResolver @ts_extensions [".ts", ".tsx", ".js", ".jsx", ".mjs", ".cjs", ".json"] @resolve_opts [extensions: @ts_extensions] @@ -9,38 +9,34 @@ defmodule QuickBEAM.JS.Bundler do @spec bundle_file(String.t(), keyword()) :: {:ok, String.t()} | {:error, term()} def bundle_file(entry_path, opts \\ []) do entry_path = Path.expand(entry_path) - node_modules = Keyword.get(opts, :node_modules) || find_node_modules(entry_path) - project_root = project_root(entry_path, node_modules) - entry_label = Path.relative_to(entry_path, project_root, separator: "/") bundle_opts = opts |> Keyword.drop([:node_modules]) - |> Keyword.put_new(:entry, entry_label) + |> Keyword.put_new(:entry, normalize_path(entry_path)) - case collect_modules(entry_path, project_root) do + case collect_modules(entry_path) do {:ok, files} -> OXC.bundle(files, bundle_opts) {:error, _} = error -> error end end - defp collect_modules(entry_path, project_root) do - case do_collect(entry_path, project_root, [], MapSet.new()) do + defp collect_modules(entry_path) do + case do_collect(entry_path, [], MapSet.new()) do {:ok, files, _seen} -> {:ok, Enum.reverse(files)} {:error, _} = error -> error end end - defp do_collect(abs_path, project_root, files, seen) do + defp do_collect(abs_path, files, seen) do if MapSet.member?(seen, abs_path) do {:ok, files, seen} else with {:ok, source} <- File.read(abs_path), - {:ok, rewritten, resolved_paths} <- rewrite_and_resolve(source, abs_path, project_root) do - label = Path.relative_to(abs_path, project_root, separator: "/") + {:ok, rewritten, resolved_paths} <- rewrite_and_resolve(source, abs_path) do seen = MapSet.put(seen, abs_path) - files = [{label, rewritten} | files] - collect_deps(resolved_paths, project_root, files, seen) + files = [{normalize_path(abs_path), rewritten} | files] + collect_deps(resolved_paths, files, seen) else {:error, reason} when is_atom(reason) -> {:error, {:file_read_error, abs_path, reason}} {:error, _} = error -> error @@ -48,22 +44,22 @@ defmodule QuickBEAM.JS.Bundler do end end - defp collect_deps([], _project_root, files, seen), do: {:ok, files, seen} + defp collect_deps([], files, seen), do: {:ok, files, seen} - defp collect_deps([path | rest], project_root, files, seen) do - case do_collect(path, project_root, files, seen) do - {:ok, files, seen} -> collect_deps(rest, project_root, files, seen) + defp collect_deps([path | rest], files, seen) do + case do_collect(path, files, seen) do + {:ok, files, seen} -> collect_deps(rest, files, seen) {:error, _} = error -> error end end - defp rewrite_and_resolve(source, importer, project_root) do + defp rewrite_and_resolve(source, importer) do Process.put(:bundler_resolved, []) from_dir = Path.dirname(importer) result = OXC.rewrite_specifiers(source, Path.basename(importer), fn specifier -> - resolve_and_track(specifier, from_dir, project_root) + resolve_and_track(specifier, from_dir) end) resolved_paths = Process.delete(:bundler_resolved) || [] @@ -78,7 +74,7 @@ defmodule QuickBEAM.JS.Bundler do error end - defp resolve_and_track(specifier, from_dir, project_root) do + defp resolve_and_track(specifier, from_dir) do case PackageResolver.resolve(specifier, from_dir, @resolve_opts) do {:builtin, _} -> :keep @@ -89,7 +85,7 @@ defmodule QuickBEAM.JS.Bundler do if PackageResolver.relative?(specifier) do :keep else - {:rewrite, PackageResolver.relative_import_path(from_dir, resolved_path, project_root)} + {:rewrite, normalize_path(resolved_path)} end :error -> @@ -97,25 +93,5 @@ defmodule QuickBEAM.JS.Bundler do end end - defp find_node_modules(entry_path) do - PackageResolver.find_node_modules(Path.dirname(entry_path)) - end - - defp project_root(entry_path, nil), do: Path.dirname(entry_path) - - defp project_root(entry_path, node_modules) do - [entry_path, node_modules] - |> Enum.map(&Path.split/1) - |> shared_segments() - |> Path.join() - end - - defp shared_segments([first | rest]) do - first - |> Enum.with_index() - |> Enum.take_while(fn {segment, index} -> - Enum.all?(rest, &(Enum.at(&1, index) == segment)) - end) - |> Enum.map(&elem(&1, 0)) - end + defp normalize_path(path), do: String.replace(path, "\\", "/") end diff --git a/lib/quickbeam/js/parser.ex b/lib/quickbeam/js/parser.ex new file mode 100644 index 000000000..0224deafb --- /dev/null +++ b/lib/quickbeam/js/parser.ex @@ -0,0 +1,104 @@ +defmodule QuickBEAM.JS.Parser do + @moduledoc "Experimental hand-written JavaScript parser for QuickBEAM." + + alias QuickBEAM.JS.Parser.Lexer + + defstruct tokens: {}, + index: 0, + token_count: 0, + last_token: nil, + errors: [], + source_type: :script, + yield_allowed?: false, + await_allowed?: false, + block_depth: 0 + + @type t :: %__MODULE__{} + + @assignment_ops ~w[= += -= *= /= %= **= <<= >>= >>>= &= ^= |= &&= ||= ??=] + @logical_ops ~w[|| && ??] + @update_ops ~w[++ --] + + @precedence %{ + "," => {1, :left}, + "=" => {2, :right}, + "+=" => {2, :right}, + "-=" => {2, :right}, + "*=" => {2, :right}, + "/=" => {2, :right}, + "%=" => {2, :right}, + "**=" => {2, :right}, + "<<=" => {2, :right}, + ">>=" => {2, :right}, + ">>>=" => {2, :right}, + "&=" => {2, :right}, + "^=" => {2, :right}, + "|=" => {2, :right}, + "&&=" => {2, :right}, + "||=" => {2, :right}, + "??=" => {2, :right}, + "?" => {3, :right}, + "??" => {4, :left}, + "||" => {5, :left}, + "&&" => {6, :left}, + "|" => {7, :left}, + "^" => {8, :left}, + "&" => {9, :left}, + "==" => {10, :left}, + "!=" => {10, :left}, + "===" => {10, :left}, + "!==" => {10, :left}, + "<" => {11, :left}, + ">" => {11, :left}, + "<=" => {11, :left}, + ">=" => {11, :left}, + "in" => {11, :left}, + "instanceof" => {11, :left}, + "<<" => {12, :left}, + ">>" => {12, :left}, + ">>>" => {12, :left}, + "+" => {13, :left}, + "-" => {13, :left}, + "*" => {14, :left}, + "/" => {14, :left}, + "%" => {14, :left}, + "**" => {15, :right} + } + + @doc "Parses JavaScript source into the experimental QuickBEAM JS AST." + def parse(source, opts \\ []) when is_binary(source) do + source_type = Keyword.get(opts, :source_type, :script) + + with {:ok, tokens} <- Lexer.tokenize(source) do + state = new_state(tokens, source_type: source_type) + {program, state} = parse_program(state) + + case state.errors do + [] -> {:ok, program} + errors -> {:error, program, Enum.reverse(errors)} + end + else + {:error, tokens, errors} -> + state = new_state(tokens, source_type: source_type, errors: errors) + {program, state} = parse_program(state) + {:error, program, Enum.reverse(state.errors)} + end + end + + @doc "Parses JavaScript source and raises when syntax errors are produced." + def parse!(source, opts \\ []) do + case parse(source, opts) do + {:ok, ast} -> ast + {:error, _ast, [error | _]} -> raise SyntaxError, message: error.message + {:error, _ast, []} -> raise SyntaxError, message: "failed to parse JavaScript" + end + end + + use QuickBEAM.JS.Parser.State + use QuickBEAM.JS.Parser.Predicates + use QuickBEAM.JS.Parser.Statements + use QuickBEAM.JS.Parser.Modules + use QuickBEAM.JS.Parser.Patterns + use QuickBEAM.JS.Parser.Classes + use QuickBEAM.JS.Parser.Expressions +end diff --git a/lib/quickbeam/js/parser/ast.ex b/lib/quickbeam/js/parser/ast.ex new file mode 100644 index 000000000..817f03486 --- /dev/null +++ b/lib/quickbeam/js/parser/ast.ex @@ -0,0 +1,374 @@ +defmodule QuickBEAM.JS.Parser.AST do + @moduledoc "AST node structs emitted by the JavaScript parser." + + defmodule Program do + @moduledoc "JavaScript script or module program." + defstruct type: :program, source_type: :script, body: [] + end + + defmodule Identifier do + @moduledoc "Identifier reference or binding name." + defstruct type: :identifier, name: nil + end + + defmodule PrivateIdentifier do + @moduledoc "Private class field or method name." + defstruct type: :private_identifier, name: nil + end + + defmodule Literal do + @moduledoc "Literal value such as a number, string, boolean, or null." + defstruct type: :literal, value: nil, raw: nil + end + + defmodule ExpressionStatement do + @moduledoc "Statement wrapping an expression." + defstruct type: :expression_statement, expression: nil + end + + defmodule VariableDeclaration do + @moduledoc "Variable declaration statement." + defstruct type: :variable_declaration, kind: nil, declarations: [] + end + + defmodule VariableDeclarator do + @moduledoc "One declarator in a variable declaration." + defstruct type: :variable_declarator, id: nil, init: nil + end + + defmodule ImportDeclaration do + @moduledoc "Static ES module import declaration." + defstruct type: :import_declaration, specifiers: [], source: nil, attributes: nil + end + + defmodule ImportSpecifier do + @moduledoc "Named import specifier." + defstruct type: :import_specifier, imported: nil, local: nil + end + + defmodule ImportDefaultSpecifier do + @moduledoc "Default import specifier." + defstruct type: :import_default_specifier, local: nil + end + + defmodule ImportNamespaceSpecifier do + @moduledoc "Namespace import specifier." + defstruct type: :import_namespace_specifier, local: nil + end + + defmodule ExportNamedDeclaration do + @moduledoc "Named ES module export declaration." + defstruct type: :export_named_declaration, + declaration: nil, + specifiers: [], + source: nil, + attributes: nil + end + + defmodule ExportDefaultDeclaration do + @moduledoc "Default ES module export declaration." + defstruct type: :export_default_declaration, declaration: nil + end + + defmodule ExportAllDeclaration do + @moduledoc "Namespace re-export declaration." + defstruct type: :export_all_declaration, exported: nil, source: nil, attributes: nil + end + + defmodule ExportSpecifier do + @moduledoc "Named export specifier." + defstruct type: :export_specifier, local: nil, exported: nil + end + + defmodule ArrayPattern do + @moduledoc "Array destructuring binding pattern." + defstruct type: :array_pattern, elements: [] + end + + defmodule ObjectPattern do + @moduledoc "Object destructuring binding pattern." + defstruct type: :object_pattern, properties: [], parenthesized?: false + end + + defmodule RestElement do + @moduledoc "Rest element in a binding pattern." + defstruct type: :rest_element, argument: nil + end + + defmodule AssignmentPattern do + @moduledoc "Binding pattern element with a default initializer." + defstruct type: :assignment_pattern, left: nil, right: nil + end + + defmodule ReturnStatement do + @moduledoc "Return statement." + defstruct type: :return_statement, argument: nil + end + + defmodule ThrowStatement do + @moduledoc "Throw statement." + defstruct type: :throw_statement, argument: nil + end + + defmodule BreakStatement do + @moduledoc "Break statement with an optional label." + defstruct type: :break_statement, label: nil + end + + defmodule ContinueStatement do + @moduledoc "Continue statement with an optional label." + defstruct type: :continue_statement, label: nil + end + + defmodule LabeledStatement do + @moduledoc "Labeled statement." + defstruct type: :labeled_statement, label: nil, body: nil + end + + defmodule IfStatement do + @moduledoc "If statement." + defstruct type: :if_statement, test: nil, consequent: nil, alternate: nil + end + + defmodule WhileStatement do + @moduledoc "While loop statement." + defstruct type: :while_statement, test: nil, body: nil + end + + defmodule ForStatement do + @moduledoc "For loop statement." + defstruct type: :for_statement, init: nil, test: nil, update: nil, body: nil + end + + defmodule ForInStatement do + @moduledoc "For-in loop statement." + defstruct type: :for_in_statement, left: nil, right: nil, body: nil + end + + defmodule ForOfStatement do + @moduledoc "For-of loop statement." + defstruct type: :for_of_statement, left: nil, right: nil, body: nil, await: false + end + + defmodule DoWhileStatement do + @moduledoc "Do-while loop statement." + defstruct type: :do_while_statement, body: nil, test: nil + end + + defmodule WithStatement do + @moduledoc "With statement." + defstruct type: :with_statement, object: nil, body: nil + end + + defmodule SwitchStatement do + @moduledoc "Switch statement." + defstruct type: :switch_statement, discriminant: nil, cases: [] + end + + defmodule SwitchCase do + @moduledoc "Switch case clause." + defstruct type: :switch_case, test: nil, consequent: [] + end + + defmodule TryStatement do + @moduledoc "Try/catch/finally statement." + defstruct type: :try_statement, block: nil, handler: nil, finalizer: nil + end + + defmodule CatchClause do + @moduledoc "Catch clause with an optional binding parameter." + defstruct type: :catch_clause, param: nil, body: nil + end + + defmodule EmptyStatement do + @moduledoc "Empty statement represented by a standalone semicolon." + defstruct type: :empty_statement + end + + defmodule DebuggerStatement do + @moduledoc "Debugger statement." + defstruct type: :debugger_statement + end + + defmodule BlockStatement do + @moduledoc "Block statement containing a statement list." + defstruct type: :block_statement, body: [] + end + + defmodule FunctionDeclaration do + @moduledoc "Function declaration." + defstruct type: :function_declaration, + id: nil, + params: [], + body: nil, + async: false, + generator: false + end + + defmodule ClassDeclaration do + @moduledoc "Class declaration." + defstruct type: :class_declaration, id: nil, super_class: nil, body: [] + end + + defmodule ClassExpression do + @moduledoc "Class expression." + defstruct type: :class_expression, id: nil, super_class: nil, body: [] + end + + defmodule MethodDefinition do + @moduledoc "Class method definition." + defstruct type: :method_definition, + key: nil, + value: nil, + kind: :method, + static: false, + computed: false + end + + defmodule FieldDefinition do + @moduledoc "Class field definition." + defstruct type: :field_definition, key: nil, value: nil, static: false, computed: false + end + + defmodule StaticBlock do + @moduledoc "Class static initialization block." + defstruct type: :static_block, body: [] + end + + defmodule FunctionExpression do + @moduledoc "Function expression." + defstruct type: :function_expression, + id: nil, + params: [], + body: nil, + async: false, + generator: false + end + + defmodule ArrayExpression do + @moduledoc "Array literal expression." + defstruct type: :array_expression, elements: [] + end + + defmodule ObjectExpression do + @moduledoc "Object literal expression." + defstruct type: :object_expression, properties: [], parenthesized?: false + end + + defmodule Property do + @moduledoc "Object literal property." + defstruct type: :property, + key: nil, + value: nil, + kind: :init, + method: false, + shorthand: false, + computed: false + end + + defmodule SpreadElement do + @moduledoc "Spread element in array literals or call arguments." + defstruct type: :spread_element, argument: nil + end + + defmodule ArrowFunctionExpression do + @moduledoc "Arrow function expression." + defstruct type: :arrow_function_expression, + params: [], + body: nil, + async: false, + parenthesized?: false + end + + defmodule YieldExpression do + @moduledoc "Yield expression." + defstruct type: :yield_expression, argument: nil, delegate: false, parenthesized?: false + end + + defmodule AwaitExpression do + @moduledoc "Await expression." + defstruct type: :await_expression, argument: nil + end + + defmodule BinaryExpression do + @moduledoc "Binary operator expression." + defstruct type: :binary_expression, operator: nil, left: nil, right: nil + end + + defmodule LogicalExpression do + @moduledoc "Logical operator expression." + defstruct type: :logical_expression, + operator: nil, + left: nil, + right: nil, + parenthesized?: false + end + + defmodule AssignmentExpression do + @moduledoc "Assignment operator expression." + defstruct type: :assignment_expression, operator: nil, left: nil, right: nil + end + + defmodule UnaryExpression do + @moduledoc "Unary operator expression." + defstruct type: :unary_expression, + operator: nil, + argument: nil, + prefix: true, + parenthesized?: false + end + + defmodule UpdateExpression do + @moduledoc "Prefix or postfix update expression." + defstruct type: :update_expression, operator: nil, argument: nil, prefix: true + end + + defmodule ConditionalExpression do + @moduledoc "Ternary conditional expression." + defstruct type: :conditional_expression, test: nil, consequent: nil, alternate: nil + end + + defmodule SequenceExpression do + @moduledoc "Comma sequence expression." + defstruct type: :sequence_expression, expressions: [], parenthesized?: false + end + + defmodule CallExpression do + @moduledoc "Function or method call expression." + defstruct type: :call_expression, callee: nil, arguments: [], optional: false + end + + defmodule NewExpression do + @moduledoc "Constructor call expression created with `new`." + defstruct type: :new_expression, callee: nil, arguments: [] + end + + defmodule MetaProperty do + @moduledoc "Meta-property expression such as `import.meta`." + defstruct type: :meta_property, meta: nil, property: nil + end + + defmodule TemplateElement do + @moduledoc "Static segment of a template literal." + defstruct type: :template_element, value: nil, raw: nil, tail: false + end + + defmodule TemplateLiteral do + @moduledoc "Template literal with static quasis and embedded expressions." + defstruct type: :template_literal, quasis: [], expressions: [] + end + + defmodule TaggedTemplateExpression do + @moduledoc "Tagged template literal expression." + defstruct type: :tagged_template_expression, tag: nil, quasi: nil + end + + defmodule MemberExpression do + @moduledoc "Property access expression." + defstruct type: :member_expression, + object: nil, + property: nil, + computed: false, + optional: false + end +end diff --git a/lib/quickbeam/js/parser/classes.ex b/lib/quickbeam/js/parser/classes.ex new file mode 100644 index 000000000..e36a7eea0 --- /dev/null +++ b/lib/quickbeam/js/parser/classes.ex @@ -0,0 +1,508 @@ +defmodule QuickBEAM.JS.Parser.Classes do + @moduledoc "Class declaration, expression, and element grammar for the experimental JavaScript parser." + + defmacro __using__(_opts) do + quote do + alias QuickBEAM.JS.Parser.AST + alias QuickBEAM.JS.Parser.{Error, Lexer, Token, Validation} + + defp parse_class_declaration(state, require_name? \\ true) do + {id, super_class, body, state} = parse_class_tail(advance(state), require_name?) + {%AST.ClassDeclaration{id: id, super_class: super_class, body: body}, state} + end + + defp parse_class_expression(state) do + {id, super_class, body, state} = parse_class_tail(advance(state), false) + {%AST.ClassExpression{id: id, super_class: super_class, body: body}, state} + end + + defp parse_class_tail(state, require_name?) do + {id, state} = + cond do + identifier_like?(current(state)) -> + parse_binding_identifier(state) + + require_name? -> + {%AST.Identifier{name: ""}, add_error(state, current(state), "expected class name")} + + true -> + {nil, state} + end + + state = validate_class_binding_identifier(state, id) + + {super_class, state} = + if keyword?(state, "extends") do + state = advance(state) + parse_expression(state, 0) + else + {nil, state} + end + + state = validate_class_heritage(state, super_class) + state = expect_value(state, "{") + {body, state} = parse_class_elements(state, []) + + state = + state + |> Validation.validate_duplicate_constructors(body) + |> Validation.validate_class_element_names(body) + + {id, super_class, body, state} + end + + defp validate_class_heritage(state, %AST.ArrowFunctionExpression{parenthesized?: false}), + do: add_error(state, current(state), "invalid class heritage") + + defp validate_class_heritage(state, _super_class), do: state + + defp validate_class_binding_identifier(state, %AST.Identifier{name: name}) + when name in ["let", "static", "yield"] do + add_error(state, current(state), "expected class name") + end + + defp validate_class_binding_identifier(%{await_allowed?: true} = state, %AST.Identifier{ + name: "await" + }) do + add_error(state, current(state), "expected class name") + end + + defp validate_class_binding_identifier(state, _id), do: state + + defp parse_class_formal_parameters(state, await_allowed?) do + previous_await_allowed? = state.await_allowed? + {params, state} = parse_formal_parameters(%{state | await_allowed?: await_allowed?}) + {params, %{state | await_allowed?: previous_await_allowed?}} + end + + defp parse_class_elements(state, acc) do + cond do + eof?(state) -> + {Enum.reverse(acc), add_error(state, current(state), "unterminated class body")} + + match_value?(state, "}") -> + {Enum.reverse(acc), advance(state)} + + match_value?(state, ";") -> + parse_class_elements(advance(state), acc) + + true -> + {element, state} = parse_class_element(state) + parse_class_elements(state, [element | acc]) + end + end + + defp parse_class_element(state) do + state = consume_class_element_decorators(state) + {static?, state} = consume_class_static_modifier(state) + + cond do + static? and match_value?(state, "{") -> + {block, state} = parse_static_block_statement(state) + state = Validation.validate_strict_body_bindings(state, block) + {%AST.StaticBlock{body: block.body}, state} + + async_method_start?(state) -> + parse_async_class_method(state, static?) + + match_value?(state, "*") -> + parse_generator_class_method(state, static?) + + match_value?(state, ["get", "set"]) and accessor_key_start?(state) -> + parse_class_accessor(state, static?) + + match_value?(state, "accessor") and auto_accessor_field_start?(state) -> + parse_auto_accessor_field(state, static?) + + true -> + {key, computed?, state} = parse_class_key_with_computed(state) + + if match_value?(state, "(") do + {params, state} = parse_class_formal_parameters(state, false) + {body, state} = parse_function_body(state, false, false) + + state = + state + |> Validation.validate_super_params(params) + |> Validation.validate_generator_params(true, params) + |> Validation.validate_strict_params(params) + |> Validation.validate_strict_function_params(params, body) + |> Validation.validate_strict_body_bindings(body) + + value = %AST.FunctionExpression{ + id: property_function_name(key), + params: params, + body: body + } + + {%AST.MethodDefinition{ + key: key, + value: value, + kind: class_method_kind(key, static?), + static: static?, + computed: computed? + }, state} + else + {value, state} = parse_class_field_initializer(state) + + {%AST.FieldDefinition{key: key, value: value, static: static?, computed: computed?}, + consume_semicolon(state)} + end + end + end + + defp parse_generator_class_method(state, static?) do + state = advance(state) + {key, computed?, state} = parse_class_key_with_computed(state) + {params, state} = parse_class_formal_parameters(state, false) + {body, state} = parse_function_body(state, true, false) + + state = + state + |> Validation.validate_super_params(params) + |> Validation.validate_generator_params(true, params) + |> Validation.validate_generator_body_bindings(true, body) + |> Validation.validate_strict_params(params) + |> Validation.validate_strict_function_params(params, body) + |> Validation.validate_strict_body_bindings(body) + + value = %AST.FunctionExpression{ + id: property_function_name(key), + params: params, + body: body, + generator: true + } + + {%AST.MethodDefinition{ + key: key, + value: value, + static: static?, + computed: computed? + }, state} + end + + defp parse_async_class_method(state, static?) do + state = advance(state) + {generator?, state} = consume_generator_marker(state) + {key, computed?, state} = parse_class_key_with_computed(state) + {params, state} = parse_class_formal_parameters(state, true) + {body, state} = parse_function_body(state, generator?, true) + + state = + state + |> validate_class_method_super_call_params(params) + |> Validation.validate_async_function_name(true, property_function_name(key)) + |> Validation.validate_async_generator_function_name( + generator?, + property_function_name(key) + ) + |> Validation.validate_async_params(true, params) + |> Validation.validate_async_body_bindings(true, body) + |> Validation.validate_generator_params(true, params) + |> Validation.validate_generator_body_bindings(generator?, body) + |> Validation.validate_strict_params(params) + |> Validation.validate_strict_function_params(params, body) + |> Validation.validate_strict_body_bindings(body) + + value = %AST.FunctionExpression{ + id: property_function_name(key), + params: params, + body: body, + async: true, + generator: generator? + } + + {%AST.MethodDefinition{ + key: key, + value: value, + static: static?, + computed: computed? + }, state} + end + + defp validate_class_method_super_call_params(state, params) do + if Enum.any?(params, &class_method_super_call_param?/1) do + add_error(state, current(state), "super not allowed outside class method") + else + state + end + end + + defp class_method_super_call_param?(%AST.AssignmentPattern{right: right}), + do: class_method_super_call_param?(right) + + defp class_method_super_call_param?(%AST.CallExpression{ + callee: %AST.Identifier{name: "super"} + }), + do: true + + defp class_method_super_call_param?(%AST.CallExpression{arguments: arguments}), + do: Enum.any?(arguments, &class_method_super_call_param?/1) + + defp class_method_super_call_param?(_param), do: false + + defp parse_static_block_statement(state) do + previous_await_allowed? = state.await_allowed? + previous_yield_allowed? = state.yield_allowed? + + {block, state} = + parse_block_statement(%{state | await_allowed?: true, yield_allowed?: false}) + + state = validate_static_block_contents(state, block) + + {block, + %{ + state + | await_allowed?: previous_await_allowed?, + yield_allowed?: previous_yield_allowed? + }} + end + + defp validate_static_block_contents(state, %AST.BlockStatement{body: body}) do + cond do + Enum.any?(body, &static_block_return_statement?/1) -> + add_error(state, current(state), "return statement outside function") + + Enum.any?(body, &static_block_forbidden_identifier_statement?/1) -> + add_error(state, current(state), "identifier not allowed in class static block") + + true -> + state + end + end + + defp static_block_return_statement?(%AST.ReturnStatement{}), do: true + + defp static_block_return_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &static_block_return_statement?/1) + + defp static_block_return_statement?(_statement), do: false + + defp static_block_forbidden_identifier_statement?(%AST.ExpressionStatement{ + expression: expression + }), + do: static_block_forbidden_identifier_expression?(expression) + + defp static_block_forbidden_identifier_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &static_block_forbidden_identifier_statement?/1) + + defp static_block_forbidden_identifier_statement?(%AST.VariableDeclaration{ + declarations: declarations + }) do + Enum.any?(declarations, fn declaration -> + static_block_forbidden_binding?(declaration.id) or + static_block_forbidden_identifier_expression?(declaration.init) + end) + end + + defp static_block_forbidden_identifier_statement?(%AST.FunctionDeclaration{id: id}), + do: static_block_forbidden_binding?(id) + + defp static_block_forbidden_identifier_statement?(%AST.LabeledStatement{label: label}), + do: static_block_forbidden_binding?(label) + + defp static_block_forbidden_identifier_statement?(%AST.TryStatement{handler: handler}), + do: static_block_forbidden_catch?(handler) + + defp static_block_forbidden_catch?(%AST.CatchClause{param: param}), + do: static_block_forbidden_binding?(param) + + defp static_block_forbidden_catch?(_handler), do: false + + defp static_block_forbidden_binding?(%AST.Identifier{name: name}) + when name in ["await", "arguments", "yield"], + do: true + + defp static_block_forbidden_binding?(%AST.ArrayPattern{elements: elements}), + do: Enum.any?(elements, &static_block_forbidden_binding?/1) + + defp static_block_forbidden_binding?(%AST.ObjectPattern{properties: properties}), + do: Enum.any?(properties, &static_block_forbidden_binding?/1) + + defp static_block_forbidden_binding?(%AST.Property{value: value}), + do: static_block_forbidden_binding?(value) + + defp static_block_forbidden_binding?(%AST.RestElement{argument: argument}), + do: static_block_forbidden_binding?(argument) + + defp static_block_forbidden_binding?(_binding), do: false + + defp static_block_forbidden_identifier_statement?(_statement), do: false + + defp static_block_forbidden_identifier_expression?(%AST.Identifier{name: name}) + when name in ["arguments", "yield"], + do: true + + defp static_block_forbidden_identifier_expression?(%AST.AwaitExpression{}), do: true + defp static_block_forbidden_identifier_expression?(%AST.YieldExpression{}), do: true + defp static_block_forbidden_identifier_expression?(%AST.FunctionExpression{}), do: false + + defp static_block_forbidden_identifier_expression?(%AST.ArrowFunctionExpression{}), + do: false + + defp static_block_forbidden_identifier_expression?(%AST.ClassExpression{ + super_class: super_class, + body: body + }) do + static_block_forbidden_identifier_expression?(super_class) or + Enum.any?(body, &static_block_forbidden_identifier_class_element?/1) + end + + defp static_block_forbidden_identifier_expression?(%AST.CallExpression{ + callee: callee, + arguments: arguments + }), + do: + static_block_forbidden_identifier_expression?(callee) or + Enum.any?(arguments, &static_block_forbidden_identifier_expression?/1) + + defp static_block_forbidden_identifier_expression?(%AST.MemberExpression{ + object: object, + property: property + }), + do: + static_block_forbidden_identifier_expression?(object) or + static_block_forbidden_identifier_expression?(property) + + defp static_block_forbidden_identifier_expression?(_expression), do: false + + defp static_block_forbidden_identifier_class_element?(%AST.MethodDefinition{ + computed: true, + key: key + }), + do: static_block_forbidden_identifier_expression?(key) + + defp static_block_forbidden_identifier_class_element?(%AST.FieldDefinition{ + computed: true, + key: key, + value: value + }), + do: + static_block_forbidden_identifier_expression?(key) or + static_block_forbidden_identifier_expression?(value) + + defp static_block_forbidden_identifier_class_element?(%AST.FieldDefinition{value: value}), + do: static_block_forbidden_identifier_expression?(value) + + defp static_block_forbidden_identifier_class_element?(%AST.StaticBlock{body: body}), + do: Enum.any?(body, &static_block_forbidden_identifier_statement?/1) + + defp static_block_forbidden_identifier_class_element?(_element), do: false + + defp parse_auto_accessor_field(state, static?) do + state = advance(state) + {key, computed?, state} = parse_class_key_with_computed(state) + {value, state} = parse_class_field_initializer(state) + + {%AST.FieldDefinition{key: key, value: value, static: static?, computed: computed?}, + consume_semicolon(state)} + end + + defp parse_class_accessor(state, static?) do + kind = current(state).value |> String.to_atom() + state = advance(state) + {key, computed?, state} = parse_class_key_with_computed(state) + {params, state} = parse_class_formal_parameters(state, false) + {body, state} = parse_block_statement(state) + + state = + state + |> validate_class_accessor_arity(kind, params) + |> Validation.validate_super_params(params) + |> Validation.validate_generator_params(true, params) + |> Validation.validate_strict_params(params) + |> Validation.validate_strict_function_params(params, body) + |> Validation.validate_strict_body_bindings(body) + + value = %AST.FunctionExpression{ + id: property_function_name(key), + params: params, + body: body + } + + {%AST.MethodDefinition{ + key: key, + value: value, + kind: kind, + static: static?, + computed: computed? + }, state} + end + + defp validate_class_accessor_arity(state, :get, [_ | _]), + do: add_error(state, current(state), "invalid number of arguments for getter or setter") + + defp validate_class_accessor_arity(state, :set, params) when length(params) != 1, + do: add_error(state, current(state), "invalid number of arguments for getter or setter") + + defp validate_class_accessor_arity(state, _kind, _params), do: state + + defp parse_class_field_initializer(state) do + if match_value?(state, "=") do + state = advance(state) + previous_await_allowed? = state.await_allowed? + previous_yield_allowed? = state.yield_allowed? + + {value, state} = + parse_expression(%{state | await_allowed?: false, yield_allowed?: false}, 0) + + {value, + %{ + state + | await_allowed?: previous_await_allowed?, + yield_allowed?: previous_yield_allowed? + }} + else + {nil, state} + end + end + + defp class_method_kind(%AST.Identifier{name: "constructor"}, false), do: :constructor + defp class_method_kind(_key, _static?), do: :method + + defp consume_class_element_decorators(state) do + if match_value?(state, "@") do + state = advance(state) + {_decorator, state} = parse_expression(state, 0) + consume_class_element_decorators(state) + else + state + end + end + + defp consume_class_static_modifier(state) do + if raw_keyword?(current(state), "static") and peek_value(state) not in ["(", ";", "="] do + {true, advance(state)} + else + {false, state} + end + end + + defp auto_accessor_field_start?(state) do + not peek(state).before_line_terminator? and peek_value(state) not in ["(", ";", "="] and + (identifier_like?(peek(state)) or + peek(state).type in [:string, :number, :boolean, :null] or + peek_value(state) in ["#", "["]) + end + + defp parse_class_key_with_computed(state) do + cond do + match_value?(state, "#") -> + hash = current(state) + state = advance(state) + token = current(state) + + if private_identifier_token?(hash, token) do + {%AST.PrivateIdentifier{name: token.value}, false, advance(state)} + else + {%AST.PrivateIdentifier{name: ""}, false, + add_error(state, token, "expected private name")} + end + + true -> + parse_property_key_with_computed(state) + end + end + end + end +end diff --git a/lib/quickbeam/js/parser/error.ex b/lib/quickbeam/js/parser/error.ex new file mode 100644 index 000000000..f45e70c05 --- /dev/null +++ b/lib/quickbeam/js/parser/error.ex @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Error do + @moduledoc "Structured syntax error produced by the JavaScript parser." + + @enforce_keys [:message, :line, :column, :offset] + defstruct [:message, :line, :column, :offset] + + @type t :: %__MODULE__{ + message: binary(), + line: pos_integer(), + column: non_neg_integer(), + offset: non_neg_integer() + } +end diff --git a/lib/quickbeam/js/parser/expressions.ex b/lib/quickbeam/js/parser/expressions.ex new file mode 100644 index 000000000..254b0f1d0 --- /dev/null +++ b/lib/quickbeam/js/parser/expressions.ex @@ -0,0 +1,12 @@ +defmodule QuickBEAM.JS.Parser.Expressions do + @moduledoc "Expression grammar for the experimental JavaScript parser." + + defmacro __using__(_opts) do + quote do + use QuickBEAM.JS.Parser.Expressions.Core + use QuickBEAM.JS.Parser.Expressions.Functions + use QuickBEAM.JS.Parser.Expressions.Templates + use QuickBEAM.JS.Parser.Expressions.Literals + end + end +end diff --git a/lib/quickbeam/js/parser/expressions/core.ex b/lib/quickbeam/js/parser/expressions/core.ex new file mode 100644 index 000000000..a9c156928 --- /dev/null +++ b/lib/quickbeam/js/parser/expressions/core.ex @@ -0,0 +1,542 @@ +defmodule QuickBEAM.JS.Parser.Expressions.Core do + @moduledoc "Core Pratt expression grammar." + + defmacro __using__(_opts) do + quote do + alias QuickBEAM.JS.Parser.AST + alias QuickBEAM.JS.Parser.{Lexer, Token, Validation} + + defp parse_expression_statement(state) do + {expr, state} = parse_expression(state, 0) + {%AST.ExpressionStatement{expression: expr}, consume_semicolon(state)} + end + + defp parse_expression(state, min_precedence) do + {left, state} = parse_prefix(state) + parse_expression_tail(state, left, min_precedence) + end + + defp parse_expression_no_in(state, min_precedence) do + {left, state} = parse_prefix(state) + parse_expression_tail_no_in(state, left, min_precedence) + end + + defp parse_expression_tail(state, left, min_precedence) do + state = parse_postfix_tail(state, left) + + case state do + {left, state} -> parse_binary_tail(state, left, min_precedence) + end + end + + defp parse_postfix_tail(state, left) do + cond do + match_value?(state, "(") -> + {arguments, state} = parse_arguments(advance(state), []) + parse_postfix_tail(state, %AST.CallExpression{callee: left, arguments: arguments}) + + match_value?(state, "?.") -> + state = + if match?(%AST.NewExpression{arguments: []}, left), + do: add_error(state, current(state), "optional chain not allowed after new"), + else: state + + parse_optional_chain_tail(advance(state), left) + + match_value?(state, ".") -> + state = advance(state) + {property, state} = parse_property_identifier(state) + + parse_postfix_tail(state, %AST.MemberExpression{ + object: left, + property: property, + computed: false + }) + + match_value?(state, "[") -> + state = advance(state) + {property, state} = parse_expression(state, 0) + state = expect_value(state, "]") + + parse_postfix_tail(state, %AST.MemberExpression{ + object: left, + property: property, + computed: true + }) + + current(state).type == :template -> + state = + if optional_chain?(left), + do: + add_error( + state, + current(state), + "optional chain not allowed as tagged template callee" + ), + else: state + + quasi = parse_template_literal(current(state)) + + parse_postfix_tail(advance(state), %AST.TaggedTemplateExpression{ + tag: left, + quasi: quasi + }) + + postfix_update_operator?(current(state)) and not current(state).before_line_terminator? -> + token = current(state) + state = Validation.validate_update_target(state, left) + + {%AST.UpdateExpression{operator: token.value, argument: left, prefix: false}, + advance(state)} + + true -> + {left, state} + end + end + + defp parse_optional_chain_tail(state, left) do + state = Validation.validate_optional_chain_base(state, left) + + cond do + match_value?(state, "(") -> + {arguments, state} = parse_arguments(advance(state), []) + + parse_postfix_tail(state, %AST.CallExpression{ + callee: left, + arguments: arguments, + optional: true + }) + + match_value?(state, "[") -> + state = advance(state) + {property, state} = parse_expression(state, 0) + state = expect_value(state, "]") + + parse_postfix_tail(state, %AST.MemberExpression{ + object: left, + property: property, + computed: true, + optional: true + }) + + true -> + {property, state} = parse_property_identifier(state) + + parse_postfix_tail(state, %AST.MemberExpression{ + object: left, + property: property, + computed: false, + optional: true + }) + end + end + + defp parse_binary_tail(state, left, min_precedence) do + parse_binary_tail(state, left, min_precedence, true) + end + + defp parse_expression_tail_no_in(state, left, min_precedence) do + state = parse_postfix_tail(state, left) + + case state do + {left, state} -> parse_binary_tail(state, left, min_precedence, false) + end + end + + defp parse_binary_tail(state, left, min_precedence, allow_in?) do + token = current(state) + operator = operator_value(token) + + case Map.get(@precedence, operator) do + {precedence, associativity} + when precedence >= min_precedence and (allow_in? or operator != "in") -> + state = advance(state) + + if operator == "?" do + parse_conditional_tail(state, left, precedence, min_precedence, allow_in?) + else + next_min = if associativity == :left, do: precedence + 1, else: precedence + + {right, state} = + if allow_in?, + do: parse_expression(state, next_min), + else: parse_expression_no_in(state, next_min) + + assignment_left = + if operator in @assignment_ops, do: assignment_target_pattern(left), else: left + + expr = binary_node(operator, left, right) + + state = + state + |> Validation.validate_assignment_target(operator, assignment_left) + |> validate_exponentiation_left(operator, left) + |> validate_coalesce_mixing(operator, left, right) + + parse_binary_tail(state, expr, min_precedence, allow_in?) + end + + _ -> + {left, state} + end + end + + defp private_identifier_start?(%Token{type: :punctuator, value: "#"}), do: true + defp private_identifier_start?(_token), do: false + + defp validate_unary_operand(state, %AST.YieldExpression{}) do + add_error(state, current(state), "yield expression not allowed as unary operand") + end + + defp validate_unary_operand(state, _argument), do: state + + defp prefix_update_operator?(%Token{type: :punctuator, value: value}) + when value in @update_ops, + do: true + + defp prefix_update_operator?(_token), do: false + + defp postfix_update_operator?(%Token{ + type: :punctuator, + value: value, + before_line_terminator?: false + }) + when value in @update_ops, + do: true + + defp postfix_update_operator?(_token), do: false + + defp unary_operator?(%Token{type: :punctuator, value: value}) + when value in ["!", "~", "+", "-"], + do: true + + defp unary_operator?(%Token{type: :keyword, value: value}) + when value in ["typeof", "void", "delete"], + do: true + + defp unary_operator?(_token), do: false + + defp optional_chain?(%AST.MemberExpression{optional: true}), do: true + defp optional_chain?(%AST.CallExpression{optional: true}), do: true + defp optional_chain?(%AST.MemberExpression{object: object}), do: optional_chain?(object) + defp optional_chain?(%AST.CallExpression{callee: callee}), do: optional_chain?(callee) + + defp optional_chain?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &optional_chain?/1) + + defp optional_chain?(%AST.ObjectPattern{properties: properties}), + do: Enum.any?(properties, &optional_chain?/1) + + defp optional_chain?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &optional_chain?/1) + + defp optional_chain?(%AST.ArrayPattern{elements: elements}), + do: Enum.any?(elements, &optional_chain?/1) + + defp optional_chain?(%AST.Property{value: value}), do: optional_chain?(value) + defp optional_chain?(%AST.SpreadElement{argument: argument}), do: optional_chain?(argument) + defp optional_chain?(_expression), do: false + + defp parse_conditional_tail(state, test, precedence, min_precedence, allow_in?) do + {consequent, state} = parse_expression(state, 0) + state = expect_value(state, ":") + + {alternate, state} = + if allow_in?, + do: parse_expression(state, precedence), + else: parse_expression_no_in(state, precedence) + + parse_binary_tail( + state, + %AST.ConditionalExpression{test: test, consequent: consequent, alternate: alternate}, + min_precedence, + allow_in? + ) + end + + defp parse_prefix(state) do + token = current(state) + + cond do + token.type in [:number, :string, :regexp, :boolean, :null] -> + {%AST.Literal{value: token.value, raw: token.raw}, advance(state)} + + match_value?(state, "(") and arrow_after_parentheses?(state) -> + {params, state} = parse_formal_parameters(state) + state = expect_value(state, "=>") + {body, state} = parse_arrow_body(state) + state = Validation.validate_super_params(state, params) + state = Validation.validate_arrow_params(state, params, body) + {%AST.ArrowFunctionExpression{params: params, body: body}, state} + + match_value?(state, "(") -> + state = advance(state) + {expr, state} = parse_expression(state, 0) + {mark_parenthesized_expression(expr), expect_value(state, ")")} + + match_value?(state, "[") -> + parse_array_expression(state) + + match_value?(state, "{") -> + parse_object_expression(state) + + private_identifier_start?(token) -> + parse_private_identifier_expression(state) + + prefix_update_operator?(token) -> + state = advance(state) + {argument, state} = parse_prefix(state) + {argument, state} = parse_postfix_tail(state, argument) + state = Validation.validate_update_target(state, argument) + + {%AST.UpdateExpression{operator: token.value, argument: argument, prefix: true}, + state} + + unary_operator?(token) -> + operator = operator_value(token) + state = advance(state) + {argument, state} = parse_prefix(state) + {argument, state} = parse_postfix_tail(state, argument) + state = validate_unary_operand(state, argument) + {%AST.UnaryExpression{operator: operator, argument: argument}, state} + + token.type == :template -> + state = validate_untagged_template_literal(state, token) + {parse_template_literal(token), advance(state)} + + async_arrow_start?(state) -> + parse_async_arrow_expression(state) + + keyword?(state, "import") and peek_value(state) == "." and + peek_value(state, 2) == "meta" -> + parse_import_meta_expression(state) + + keyword?(state, "import") and peek_value(state) in ["(", "."] -> + {%AST.Identifier{name: "import"}, advance(state)} + + keyword?(state, "new") and peek_value(state) == "." and current(state).raw == "new" and + peek(state, 2).raw == "target" -> + parse_new_target_expression(state) + + keyword?(state, "new") and peek_value(state) == "." -> + {identifier, state} = parse_binding_identifier(state) + {identifier, add_error(state, current(state), "invalid meta property")} + + keyword?(state, "new") -> + parse_new_expression(state) + + keyword?(state, "class") -> + parse_class_expression(state) + + match_value?(state, "@") -> + parse_decorated_class_expression(state) + + function_start?(state) -> + parse_function_expression(state) + + token.value == "yield" and (state.yield_allowed? or state.source_type == :module) -> + parse_yield_expression(state) + + token.value == "await" and (state.await_allowed? or state.source_type == :module) -> + parse_await_expression(state) + + identifier_like?(token) and peek_value(state) == "=>" and + not peek(state).before_line_terminator? -> + state = advance(state) + state = advance(state) + {body, state} = parse_arrow_body(state) + params = [%AST.Identifier{name: token.value}] + state = Validation.validate_super_params(state, params) + state = Validation.validate_arrow_params(state, params, body) + + {%AST.ArrowFunctionExpression{params: params, body: body}, state} + + identifier_like?(token) or token.value in ["this", "super"] -> + {%AST.Identifier{name: token.value}, advance(state)} + + true -> + {%AST.Literal{value: nil, raw: ""}, + add_error(state, token, "expected expression") |> recover_expression()} + end + end + + defp parse_decorated_class_expression(state) do + state = skip_decorators(state) + + if keyword?(state, "class") do + parse_class_expression(state) + else + {%AST.Literal{value: nil, raw: ""}, add_error(state, current(state), "expected class")} + end + end + + defp skip_decorators(state) do + if match_value?(state, "@") do + state |> advance() |> skip_decorator_tail(0) |> skip_decorators() + else + state + end + end + + defp skip_decorator_tail(state, 0) do + cond do + eof?(state) or match_value?(state, "@") or keyword?(state, "class") -> + state + + match_value?(state, ["(", "[", "{"]) -> + state |> advance() |> skip_decorator_tail(1) + + true -> + state |> advance() |> skip_decorator_tail(0) + end + end + + defp skip_decorator_tail(state, depth) do + cond do + eof?(state) -> + state + + match_value?(state, ["(", "[", "{"]) -> + state |> advance() |> skip_decorator_tail(depth + 1) + + match_value?(state, [")", "]", "}"]) -> + state |> advance() |> skip_decorator_tail(depth - 1) + + true -> + state |> advance() |> skip_decorator_tail(depth) + end + end + + defp binary_node(",", %AST.SequenceExpression{expressions: expressions}, right) do + %AST.SequenceExpression{expressions: expressions ++ [right]} + end + + defp binary_node(",", left, right) do + %AST.SequenceExpression{expressions: [left, right]} + end + + defp validate_exponentiation_left(state, "**", %AST.UnaryExpression{parenthesized?: false}) do + add_error( + state, + current(state), + "unparenthesized unary expression cannot be exponentiation base" + ) + end + + defp validate_exponentiation_left(state, _operator, _left), do: state + + defp validate_coalesce_mixing(state, "??", left, right) do + if contains_logical_and_or?(left) or contains_logical_and_or?(right) do + add_error(state, current(state), "cannot mix ?? with && or ||") + else + state + end + end + + defp validate_coalesce_mixing(state, operator, left, right) when operator in ["&&", "||"] do + if contains_coalesce?(left) or contains_coalesce?(right) do + add_error(state, current(state), "cannot mix ?? with && or ||") + else + state + end + end + + defp validate_coalesce_mixing(state, _operator, _left, _right), do: state + + defp contains_logical_and_or?(%AST.LogicalExpression{parenthesized?: true}), do: false + + defp contains_logical_and_or?(%AST.LogicalExpression{operator: operator}) + when operator in ["&&", "||"], + do: true + + defp contains_logical_and_or?(%AST.LogicalExpression{left: left, right: right}), + do: contains_logical_and_or?(left) or contains_logical_and_or?(right) + + defp contains_logical_and_or?(_expression), do: false + + defp contains_coalesce?(%AST.LogicalExpression{parenthesized?: true}), do: false + + defp contains_coalesce?(%AST.LogicalExpression{operator: "??"}), do: true + + defp contains_coalesce?(%AST.LogicalExpression{left: left, right: right}), + do: contains_coalesce?(left) or contains_coalesce?(right) + + defp contains_coalesce?(_expression), do: false + + defp binary_node(operator, left, right) when operator in @assignment_ops do + %AST.AssignmentExpression{ + operator: operator, + left: assignment_target_pattern(left), + right: right + } + end + + defp binary_node(operator, left, right) when operator in @logical_ops do + %AST.LogicalExpression{operator: operator, left: left, right: right} + end + + defp binary_node(operator, left, right) do + %AST.BinaryExpression{operator: operator, left: left, right: right} + end + + defp mark_parenthesized_expression(%AST.ObjectExpression{} = expression), + do: %{expression | parenthesized?: true} + + defp mark_parenthesized_expression(%AST.LogicalExpression{} = expression), + do: %{expression | parenthesized?: true} + + defp mark_parenthesized_expression(%AST.ArrowFunctionExpression{} = expression), + do: %{expression | parenthesized?: true} + + defp mark_parenthesized_expression(%AST.UnaryExpression{} = expression), + do: %{expression | parenthesized?: true} + + defp mark_parenthesized_expression(%AST.YieldExpression{} = expression), + do: %{expression | parenthesized?: true} + + defp mark_parenthesized_expression(%AST.SequenceExpression{} = expression), + do: %{expression | parenthesized?: true} + + defp mark_parenthesized_expression(expression), do: expression + + defp assignment_target_pattern(%AST.ObjectExpression{properties: properties} = expression) do + %AST.ObjectPattern{ + properties: Enum.map(properties, &assignment_target_pattern/1), + parenthesized?: expression.parenthesized? + } + end + + defp assignment_target_pattern(%AST.ArrayExpression{elements: elements}) do + %AST.ArrayPattern{elements: Enum.map(elements, &assignment_target_pattern/1)} + end + + defp assignment_target_pattern(%AST.Property{} = property) do + %AST.Property{property | value: assignment_target_pattern(property.value)} + end + + defp assignment_target_pattern(%AST.SpreadElement{argument: argument}) do + %AST.RestElement{argument: assignment_target_pattern(argument)} + end + + defp assignment_target_pattern(%AST.AssignmentExpression{ + operator: "=", + left: left, + right: right + }) do + %AST.AssignmentPattern{left: assignment_target_pattern(left), right: right} + end + + defp assignment_target_pattern(%AST.AssignmentPattern{left: left} = pattern) do + %AST.AssignmentPattern{pattern | left: assignment_target_pattern(left)} + end + + defp assignment_target_pattern(target), do: target + + defp parse_parenthesized_expression(state) do + state = expect_value(state, "(") + {expr, state} = parse_expression(state, 0) + {mark_parenthesized_expression(expr), expect_value(state, ")")} + end + end + end +end diff --git a/lib/quickbeam/js/parser/expressions/functions.ex b/lib/quickbeam/js/parser/expressions/functions.ex new file mode 100644 index 000000000..24bf1aeca --- /dev/null +++ b/lib/quickbeam/js/parser/expressions/functions.ex @@ -0,0 +1,206 @@ +defmodule QuickBEAM.JS.Parser.Expressions.Functions do + @moduledoc "Function expression, arrow body, arguments, and parameter grammar." + + defmacro __using__(_opts) do + quote do + alias QuickBEAM.JS.Parser.AST + alias QuickBEAM.JS.Parser.{Lexer, Token, Validation} + + defp parse_function_expression(state) do + {async?, state} = consume_async_modifier(state) + state = expect_keyword(state, "function") + {generator?, state} = consume_generator_marker(state) + + {id, state} = + if identifier_like?(current(state)) do + parse_binding_identifier(state) + else + {nil, state} + end + + {params, state} = parse_function_formal_parameters(state, generator?, async?) + {body, state} = parse_function_body(state, generator?, async?) + + state = + state + |> Validation.validate_super_params(params) + |> Validation.validate_async_function_name(async?, id) + |> Validation.validate_async_generator_function_name(async? and generator?, id) + |> Validation.validate_async_params(async?, params) + |> Validation.validate_async_body_bindings(async?, body) + |> Validation.validate_generator_function_name(generator?, id) + |> Validation.validate_generator_params(generator?, params) + |> Validation.validate_generator_body_bindings(generator?, body) + |> Validation.validate_strict_function_name(id, body) + |> Validation.validate_strict_function_params(params, body) + + {%AST.FunctionExpression{ + id: id, + params: params, + body: body, + async: async?, + generator: generator? + }, state} + end + + defp parse_async_arrow_expression(state) do + state = advance(state) + + previous_await_allowed? = state.await_allowed? + state = %{state | await_allowed?: true} + + {params, state} = + if match_value?(state, "(") do + parse_formal_parameters(state) + else + {param, state} = parse_binding_identifier(state) + {[param], state} + end + + state = %{state | await_allowed?: previous_await_allowed?} + + state = expect_value(state, "=>") + {body, state} = parse_arrow_body(state, true) + + state = + state + |> Validation.validate_super_params(params) + |> Validation.validate_async_params(true, params) + |> Validation.validate_async_body_bindings(true, body) + |> Validation.validate_arrow_params(params, body) + + {%AST.ArrowFunctionExpression{params: params, body: body, async: true}, state} + end + + defp parse_function_formal_parameters(state, yield_allowed?, await_allowed?) do + previous_yield_allowed? = state.yield_allowed? + previous_await_allowed? = state.await_allowed? + + {params, state} = + parse_formal_parameters(%{ + state + | yield_allowed?: yield_allowed?, + await_allowed?: await_allowed? + }) + + {params, + %{ + state + | yield_allowed?: previous_yield_allowed?, + await_allowed?: previous_await_allowed? + }} + end + + defp parse_function_body(state, generator?, async?) do + previous_yield_allowed? = state.yield_allowed? + previous_await_allowed? = state.await_allowed? + + {body, state} = + parse_function_block_statement(%{ + state + | yield_allowed?: generator?, + await_allowed?: async? + }) + + {body, + %{ + state + | yield_allowed?: previous_yield_allowed?, + await_allowed?: previous_await_allowed? + }} + end + + defp parse_function_block_statement(state) do + state = expect_value(state, "{") + {body, state} = parse_statement_list(state, []) + state = Validation.validate_duplicate_lexical_bindings(state, body) + {%AST.BlockStatement{body: body}, expect_value(state, "}")} + end + + defp parse_arrow_body(state, async? \\ false) do + previous_await_allowed? = state.await_allowed? + state = %{state | await_allowed?: async?} + + {body, state} = + if match_value?(state, "{") do + parse_block_statement(state) + else + parse_expression(state, 2) + end + + {body, %{state | await_allowed?: previous_await_allowed?}} + end + + defp parse_arguments(state, acc) do + cond do + eof?(state) -> + {Enum.reverse(acc), add_error(state, current(state), "unterminated argument list")} + + match_value?(state, ")") -> + {Enum.reverse(acc), advance(state)} + + match_value?(state, "...") -> + state = advance(state) + {argument, state} = parse_expression(state, 2) + arg = %AST.SpreadElement{argument: argument} + + cond do + match_value?(state, ",") -> parse_arguments(advance(state), [arg | acc]) + match_value?(state, ")") -> {Enum.reverse([arg | acc]), advance(state)} + true -> {Enum.reverse([arg | acc]), expect_value(state, ")")} + end + + true -> + {arg, state} = parse_expression(state, 2) + + cond do + match_value?(state, ",") -> parse_arguments(advance(state), [arg | acc]) + match_value?(state, ")") -> {Enum.reverse([arg | acc]), advance(state)} + true -> {Enum.reverse([arg | acc]), expect_value(state, ")")} + end + end + end + + defp parse_formal_parameters(state) do + state = expect_value(state, "(") + parse_parameter_list(state, []) + end + + defp parse_parameter_list(state, acc) do + cond do + eof?(state) -> + {Enum.reverse(acc), add_error(state, current(state), "unterminated parameter list")} + + match_value?(state, ")") -> + {Enum.reverse(acc), advance(state)} + + match_value?(state, "...") -> + state = advance(state) + {argument, state} = parse_binding_pattern(state) + state = validate_rest_initializer(state) + param = %AST.RestElement{argument: argument} + state = expect_value(state, ")") + {Enum.reverse([param | acc]), state} + + true -> + {param, state} = parse_binding_pattern(state) + + {param, state} = + if match_value?(state, "=") do + state = advance(state) + {right, state} = parse_expression(state, 2) + {%AST.AssignmentPattern{left: param, right: right}, state} + else + {param, state} + end + + cond do + match_value?(state, ",") -> parse_parameter_list(advance(state), [param | acc]) + match_value?(state, ")") -> {Enum.reverse([param | acc]), advance(state)} + true -> {Enum.reverse([param | acc]), expect_value(state, ")")} + end + end + end + end + end +end diff --git a/lib/quickbeam/js/parser/expressions/literals.ex b/lib/quickbeam/js/parser/expressions/literals.ex new file mode 100644 index 000000000..3db81d3b0 --- /dev/null +++ b/lib/quickbeam/js/parser/expressions/literals.ex @@ -0,0 +1,422 @@ +defmodule QuickBEAM.JS.Parser.Expressions.Literals do + @moduledoc "Literal, object, array, property, and meta-expression grammar." + + defmacro __using__(_opts) do + quote do + alias QuickBEAM.JS.Parser.AST + alias QuickBEAM.JS.Parser.{Lexer, Token, Validation} + + defp parse_private_identifier_expression(state) do + hash = current(state) + state = advance(state) + token = current(state) + + if private_identifier_token?(hash, token) do + {%AST.PrivateIdentifier{name: token.value}, advance(state)} + else + {%AST.PrivateIdentifier{name: ""}, add_error(state, token, "expected private name")} + end + end + + defp parse_import_meta_expression(state) do + meta = %AST.Identifier{name: "import"} + state = state |> advance() |> expect_value(".") + {property, state} = parse_binding_identifier(state) + {%AST.MetaProperty{meta: meta, property: property}, state} + end + + defp parse_new_target_expression(state) do + meta = %AST.Identifier{name: "new"} + state = state |> advance() |> expect_value(".") + {property, state} = parse_binding_identifier(state) + {%AST.MetaProperty{meta: meta, property: property}, state} + end + + defp parse_new_expression(state) do + state = advance(state) + {callee, state} = parse_prefix(state) + + {arguments, state} = + if match_value?(state, "(") do + parse_arguments(advance(state), []) + else + {[], state} + end + + {%AST.NewExpression{callee: callee, arguments: arguments}, state} + end + + defp parse_array_expression(state) do + state = advance(state) + {elements, state} = parse_array_elements(state, []) + {%AST.ArrayExpression{elements: elements}, state} + end + + defp parse_array_elements(state, acc) do + cond do + eof?(state) -> + {Enum.reverse(acc), add_error(state, current(state), "unterminated array literal")} + + match_value?(state, "]") -> + {Enum.reverse(acc), advance(state)} + + match_value?(state, ",") -> + parse_array_elements(advance(state), [nil | acc]) + + match_value?(state, "...") -> + state = advance(state) + {argument, state} = parse_expression(state, 2) + element = %AST.SpreadElement{argument: argument} + + cond do + match_value?(state, ",") and peek_value(state) == "]" -> + parse_array_elements(advance(state), [nil, element | acc]) + + match_value?(state, ",") -> + parse_array_elements(advance(state), [element | acc]) + + match_value?(state, "]") -> + {Enum.reverse([element | acc]), advance(state)} + + true -> + {Enum.reverse([element | acc]), expect_value(state, "]")} + end + + true -> + {element, state} = parse_expression(state, 2) + + cond do + match_value?(state, ",") -> parse_array_elements(advance(state), [element | acc]) + match_value?(state, "]") -> {Enum.reverse([element | acc]), advance(state)} + true -> {Enum.reverse([element | acc]), expect_value(state, "]")} + end + end + end + + defp parse_object_expression(state) do + state = advance(state) + {properties, state} = parse_object_properties(state, []) + {%AST.ObjectExpression{properties: properties}, state} + end + + defp parse_object_properties(state, acc) do + cond do + eof?(state) -> + {Enum.reverse(acc), add_error(state, current(state), "unterminated object literal")} + + match_value?(state, "}") -> + {Enum.reverse(acc), advance(state)} + + true -> + {property, state} = parse_object_property(state) + + cond do + match_value?(state, ",") -> + parse_object_properties(advance(state), [property | acc]) + + match_value?(state, "}") -> + {Enum.reverse([property | acc]), advance(state)} + + true -> + {Enum.reverse([property | acc]), expect_value(state, "}")} + end + end + end + + defp parse_object_property(state) do + cond do + match_value?(state, "...") -> + state = advance(state) + {argument, state} = parse_expression(state, 2) + {%AST.SpreadElement{argument: argument}, state} + + async_method_start?(state) -> + parse_async_object_method(state) + + match_value?(state, "*") -> + parse_generator_object_method(state) + + unescaped_match_value?(state, ["get", "set"]) and accessor_key_start?(state) -> + parse_accessor_property(state) + + true -> + parse_regular_object_property(state) + end + end + + defp unescaped_match_value?(state, values) when is_list(values) do + token = current(state) + token.value in values and token.raw == token.value + end + + defp parse_generator_object_method(state) do + state = advance(state) + {key, computed?, state} = parse_property_key_with_computed(state) + await_allowed? = state.await_allowed? + state = %{state | await_allowed?: false} + {params, state} = parse_formal_parameters(state) + {body, state} = parse_function_body(state, true, false) + state = %{state | await_allowed?: await_allowed?} + + state = + state + |> Validation.validate_unique_params(params) + |> validate_object_method_super_call_params(params) + |> Validation.validate_generator_params(true, params) + |> Validation.validate_generator_body_bindings(true, body) + |> Validation.validate_strict_function_params(params, body) + + value = %AST.FunctionExpression{ + id: property_function_name(key), + params: params, + body: body, + generator: true + } + + {%AST.Property{key: key, value: value, method: true, computed: computed?}, state} + end + + defp parse_async_object_method(state) do + state = advance(state) + {generator?, state} = consume_generator_marker(state) + {key, computed?, state} = parse_property_key_with_computed(state) + {params, state} = parse_formal_parameters(state) + {body, state} = parse_function_body(state, generator?, true) + + state = + state + |> Validation.validate_unique_params(params) + |> validate_object_method_super_call_params(params) + |> Validation.validate_async_params(true, params) + |> Validation.validate_async_body_bindings(true, body) + |> Validation.validate_generator_params(generator?, params) + |> Validation.validate_generator_body_bindings(generator?, body) + |> Validation.validate_strict_function_params(params, body) + + value = %AST.FunctionExpression{ + id: property_function_name(key), + params: params, + body: body, + async: true, + generator: generator? + } + + {%AST.Property{key: key, value: value, method: true, computed: computed?}, state} + end + + defp parse_regular_object_property(state) do + {key, computed?, state} = parse_property_key_with_computed(state) + + cond do + match_value?(state, ":") -> + state = advance(state) + {value, state} = parse_expression(state, 2) + {%AST.Property{key: key, value: value, computed: computed?}, state} + + match_value?(state, "(") -> + await_allowed? = state.await_allowed? + state = %{state | await_allowed?: false} + {params, state} = parse_formal_parameters(state) + {body, state} = parse_function_body(state, false, false) + state = %{state | await_allowed?: await_allowed?} + + state = + state + |> Validation.validate_unique_params(params) + |> validate_object_method_super_call_params(params) + |> Validation.validate_strict_function_params(params, body) + + value = %AST.FunctionExpression{ + id: property_function_name(key), + params: params, + body: body + } + + {%AST.Property{key: key, value: value, method: true, computed: computed?}, state} + + match?(%AST.Identifier{}, key) and match_value?(state, "=") -> + state = advance(state) + {right, state} = parse_expression(state, 2) + value = %AST.AssignmentPattern{left: key, right: right} + {%AST.Property{key: key, value: value, shorthand: true, computed: computed?}, state} + + match?(%AST.Identifier{}, key) -> + state = validate_object_shorthand(state, key, computed?) + {%AST.Property{key: key, value: key, shorthand: true, computed: computed?}, state} + + true -> + {%AST.Property{key: key, value: key, shorthand: true, computed: computed?}, state} + end + end + + defp validate_object_shorthand(state, _key, true), + do: add_error(state, current(state), "invalid object shorthand") + + defp validate_object_shorthand( + %{await_allowed?: true} = state, + %AST.Identifier{name: "await"}, + false + ), + do: add_error(state, current(state), "invalid object shorthand") + + defp validate_object_shorthand( + %{yield_allowed?: true} = state, + %AST.Identifier{name: "yield"}, + false + ), + do: add_error(state, current(state), "invalid object shorthand") + + defp validate_object_shorthand(state, _key, _computed?), do: state + + defp parse_accessor_property(state) do + kind = current(state).value |> String.to_atom() + state = advance(state) + {key, computed?, state} = parse_property_key_with_computed(state) + await_allowed? = state.await_allowed? + state = %{state | await_allowed?: false} + {params, state} = parse_formal_parameters(state) + {body, state} = parse_function_body(state, false, false) + state = %{state | await_allowed?: await_allowed?} + + state = + state + |> validate_accessor_arity(kind, params) + |> Validation.validate_strict_function_params(params, body) + + value = %AST.FunctionExpression{ + id: property_function_name(key), + params: params, + body: body + } + + {%AST.Property{key: key, value: value, kind: kind, computed: computed?}, state} + end + + defp parse_property_key(state) do + {key, _computed?, state} = parse_property_key_with_computed(state) + {key, state} + end + + defp validate_object_method_super_call_params(state, params) do + if Enum.any?(params, &super_call_param?/1) do + add_error(state, current(state), "super not allowed outside class method") + else + state + end + end + + defp super_call_param?(%AST.AssignmentPattern{right: right}), do: super_call_param?(right) + + defp super_call_param?(%AST.CallExpression{callee: %AST.Identifier{name: "super"}}), + do: true + + defp super_call_param?(%AST.CallExpression{arguments: arguments}), + do: Enum.any?(arguments, &super_call_param?/1) + + defp super_call_param?(%AST.ArrayPattern{elements: elements}), + do: Enum.any?(elements, &super_call_param?/1) + + defp super_call_param?(%AST.ObjectPattern{properties: properties}), + do: Enum.any?(properties, &super_call_param?/1) + + defp super_call_param?(%AST.Property{value: value}), do: super_call_param?(value) + + defp super_call_param?(%AST.RestElement{argument: argument}), + do: super_call_param?(argument) + + defp super_call_param?(_param), do: false + + defp validate_accessor_arity(state, :get, []), do: state + defp validate_accessor_arity(state, :set, [_param]), do: state + + defp validate_accessor_arity(state, _kind, _params), + do: add_error(state, current(state), "invalid number of arguments for getter or setter") + + defp parse_property_key_with_computed(state) do + token = current(state) + + cond do + match_value?(state, "[") -> + state = advance(state) + {key, state} = parse_expression(state, 0) + {key, true, expect_value(state, "]")} + + token.type == :identifier -> + {%AST.Identifier{name: token.value}, false, advance(state)} + + token.type == :keyword -> + {%AST.Identifier{name: token.value}, false, advance(state)} + + token.type == :string -> + {%AST.Literal{value: token.value, raw: token.raw}, false, advance(state)} + + token.type == :number -> + {%AST.Literal{value: token.value, raw: token.raw}, false, advance(state)} + + token.type in [:boolean, :null] -> + {%AST.Identifier{name: token.raw}, false, advance(state)} + + true -> + {%AST.Identifier{name: ""}, false, + add_error(state, token, "expected property key") |> advance()} + end + end + + defp property_function_name(%AST.Identifier{} = id), do: id + defp property_function_name(_), do: nil + + defp parse_yield_expression(state) do + state = advance(state) + + cond do + match_value?(state, "*") and current(state).before_line_terminator? -> + {%AST.YieldExpression{}, + add_error(state, current(state), "yield delegate cannot start after line terminator")} + + eof?(state) or current(state).before_line_terminator? or statement_end?(state) or + match_value?(state, [",", "]", ")", ":"]) -> + {%AST.YieldExpression{}, state} + + match_value?(state, "*") -> + state = advance(state) + {argument, state} = parse_expression(state, 0) + {%AST.YieldExpression{argument: argument, delegate: true}, state} + + true -> + {argument, state} = parse_expression(state, 2) + {%AST.YieldExpression{argument: argument}, state} + end + end + + defp parse_await_expression(state) do + state = advance(state) + {argument, state} = parse_prefix(state) + {argument, state} = parse_postfix_tail(state, argument) + {%AST.AwaitExpression{argument: argument}, state} + end + + defp parse_property_identifier(state) do + token = current(state) + + cond do + match_value?(state, "#") -> + hash = current(state) + state = advance(state) + token = current(state) + + if private_identifier_token?(hash, token) do + {%AST.PrivateIdentifier{name: token.value}, advance(state)} + else + {%AST.PrivateIdentifier{name: ""}, add_error(state, token, "expected private name")} + end + + token.type in [:identifier, :keyword, :boolean, :null] -> + {%AST.Identifier{name: to_string(token.value)}, advance(state)} + + true -> + {%AST.Identifier{name: ""}, add_error(state, token, "expected property name")} + end + end + end + end +end diff --git a/lib/quickbeam/js/parser/expressions/templates.ex b/lib/quickbeam/js/parser/expressions/templates.ex new file mode 100644 index 000000000..02070a36c --- /dev/null +++ b/lib/quickbeam/js/parser/expressions/templates.ex @@ -0,0 +1,227 @@ +defmodule QuickBEAM.JS.Parser.Expressions.Templates do + @moduledoc "Template literal parsing helpers." + + defmacro __using__(_opts) do + quote do + alias QuickBEAM.JS.Parser.AST + alias QuickBEAM.JS.Parser.{Lexer, Token, Validation} + + defp validate_untagged_template_literal(state, %Token{raw: raw} = token) do + if invalid_template_escape?(raw) do + add_error(state, token, "invalid template escape sequence") + else + state + end + end + + defp invalid_template_escape?(raw) do + {quasis, _expressions} = split_template_literal(raw) + Enum.any?(quasis, &invalid_template_segment_escape?(&1.raw, 0)) + end + + defp invalid_template_segment_escape?(raw, index) when index >= byte_size(raw), do: false + + defp invalid_template_segment_escape?(raw, index) do + if byte_at(raw, index) == ?\\ do + invalid_template_escape_at?(raw, index + 1) or + invalid_template_segment_escape?(raw, index + 2) + else + invalid_template_segment_escape?(raw, index + 1) + end + end + + defp invalid_template_escape_at?(raw, index) when index >= byte_size(raw), do: true + + defp invalid_template_escape_at?(raw, index) do + case byte_at(raw, index) do + ch when ch in ?1..?9 -> true + ?0 -> index + 1 < byte_size(raw) and byte_at(raw, index + 1) in ?0..?9 + ?x -> not valid_hex_escape?(raw, index + 1, 2) + ?u -> not valid_unicode_escape?(raw, index + 1) + _ -> false + end + end + + defp valid_hex_escape?(raw, index, count) do + index + count <= byte_size(raw) and + Enum.all?(index..(index + count - 1), &hex_digit?(byte_at(raw, &1))) + end + + defp valid_unicode_escape?(raw, index) do + cond do + index < byte_size(raw) and byte_at(raw, index) == ?{ -> + valid_braced_unicode_escape?(raw, index + 1) + + true -> + valid_hex_escape?(raw, index, 4) + end + end + + defp valid_braced_unicode_escape?(raw, index), + do: valid_braced_unicode_escape?(raw, index, false) + + defp valid_braced_unicode_escape?(raw, index, saw_digit?) when index >= byte_size(raw), + do: false + + defp valid_braced_unicode_escape?(raw, index, saw_digit?) do + valid_braced_unicode_escape?(raw, index, saw_digit?, 0) + end + + defp valid_braced_unicode_escape?(raw, index, _saw_digit?, _codepoint) + when index >= byte_size(raw), + do: false + + defp valid_braced_unicode_escape?(raw, index, saw_digit?, codepoint) do + ch = byte_at(raw, index) + + cond do + ch == ?} -> + saw_digit? and codepoint <= 0x10FFFF + + hex_digit?(ch) -> + valid_braced_unicode_escape?(raw, index + 1, true, codepoint * 16 + hex_value(ch)) + + true -> + false + end + end + + defp hex_value(ch) when ch in ?0..?9, do: ch - ?0 + defp hex_value(ch) when ch in ?a..?f, do: ch - ?a + 10 + defp hex_value(ch) when ch in ?A..?F, do: ch - ?A + 10 + + defp hex_digit?(ch), do: ch in ?0..?9 or ch in ?a..?f or ch in ?A..?F + + defp parse_template_literal(%Token{raw: raw}) do + {quasis, expression_sources} = split_template_literal(raw) + + expressions = + Enum.map(expression_sources, fn source -> + case parse_expression_source(source) do + {:ok, expression} -> expression + :error -> %AST.Literal{value: nil, raw: ""} + end + end) + + %AST.TemplateLiteral{quasis: quasis, expressions: expressions} + end + + defp split_template_literal(raw) do + inner_size = max(byte_size(raw) - 2, 0) + inner = if inner_size > 0, do: binary_part(raw, 1, inner_size), else: "" + {segments, expressions} = split_template_inner(inner, 0, 0, [], []) + + quasis = + Enum.with_index( + segments, + &%AST.TemplateElement{value: &1, raw: &1, tail: &2 == length(segments) - 1} + ) + + {quasis, expressions} + end + + defp split_template_inner(raw, index, segment_start, segments, expressions) do + cond do + index >= byte_size(raw) -> + segment = binary_part(raw, segment_start, byte_size(raw) - segment_start) + {Enum.reverse([segment | segments]), Enum.reverse(expressions)} + + byte_at(raw, index) == ?\\ -> + split_template_inner(raw, index + 2, segment_start, segments, expressions) + + byte_at(raw, index) == ?$ and byte_at(raw, index + 1) == ?{ -> + segment = binary_part(raw, segment_start, index - segment_start) + {expression, close_index} = read_template_expression(raw, index + 2, index + 2, 1) + + split_template_inner(raw, close_index + 1, close_index + 1, [segment | segments], [ + expression | expressions + ]) + + true -> + split_template_inner(raw, index + 1, segment_start, segments, expressions) + end + end + + defp read_template_expression(raw, index, start, depth) do + cond do + index >= byte_size(raw) -> + {binary_part(raw, start, byte_size(raw) - start), byte_size(raw)} + + byte_at(raw, index) in [?\", ?'] -> + read_template_expression( + raw, + skip_quoted(raw, index, byte_at(raw, index)), + start, + depth + ) + + byte_at(raw, index) == ?` -> + read_template_expression(raw, skip_nested_template(raw, index), start, depth) + + byte_at(raw, index) == ?{ -> + read_template_expression(raw, index + 1, start, depth + 1) + + byte_at(raw, index) == ?} and depth == 1 -> + {binary_part(raw, start, index - start), index} + + byte_at(raw, index) == ?} -> + read_template_expression(raw, index + 1, start, depth - 1) + + true -> + read_template_expression(raw, index + 1, start, depth) + end + end + + defp skip_quoted(raw, index, quote) do + next_index = index + 1 + + cond do + next_index >= byte_size(raw) -> next_index + byte_at(raw, next_index) == ?\\ -> skip_quoted(raw, next_index + 1, quote) + byte_at(raw, next_index) == quote -> next_index + 1 + true -> skip_quoted(raw, next_index, quote) + end + end + + defp skip_nested_template(raw, index) do + {_, close_index} = read_template_body(raw, index + 1) + close_index + 1 + end + + defp read_template_body(raw, index) do + cond do + index >= byte_size(raw) -> + {"", byte_size(raw)} + + byte_at(raw, index) == ?\\ -> + read_template_body(raw, index + 2) + + byte_at(raw, index) == ?` -> + {"", index} + + byte_at(raw, index) == ?$ and byte_at(raw, index + 1) == ?{ -> + {_expression, close_index} = read_template_expression(raw, index + 2, index + 2, 1) + read_template_body(raw, close_index + 1) + + true -> + read_template_body(raw, index + 1) + end + end + + defp parse_expression_source(source) do + with {:ok, tokens} <- Lexer.tokenize(source) do + state = new_state(tokens) + {expression, _state} = parse_expression(state, 0) + {:ok, expression} + else + _ -> :error + end + end + + defp byte_at(raw, index) when index >= 0 and index < byte_size(raw), + do: :binary.at(raw, index) + + defp byte_at(_raw, _index), do: nil + end + end +end diff --git a/lib/quickbeam/js/parser/lexer.ex b/lib/quickbeam/js/parser/lexer.ex new file mode 100644 index 000000000..67da7b498 --- /dev/null +++ b/lib/quickbeam/js/parser/lexer.ex @@ -0,0 +1,1209 @@ +defmodule QuickBEAM.JS.Parser.Lexer do + @moduledoc "Hand-written JavaScript lexer used by the experimental QuickBEAM parser." + + alias QuickBEAM.JS.Parser.{Error, Token} + alias QuickBEAM.JS.Parser.Lexer.Regexp + + defstruct source: "", + offset: 0, + line: 1, + column: 0, + length: 0, + token_start_line: 1, + token_start_column: 0, + pending_line_terminator?: false, + last_token: nil, + errors: [] + + @type t :: %__MODULE__{} + + @keywords MapSet.new(~w[ + break case catch class const continue debugger default delete do else export extends + finally for function if import in instanceof let new return super switch this throw try + typeof var void while with yield async await of static get set implements interface package private protected public + ]) + + @identifier_like_keywords MapSet.new(~w[ + async get set of implements interface package private protected public + ]) + + @doc "Creates a lexer state for a source string." + def new(source) when is_binary(source) do + %__MODULE__{source: source, length: byte_size(source)} + end + + @doc "Tokenizes a source string." + def tokenize(source) when is_binary(source) do + source + |> new() + |> collect([]) + end + + @doc "Returns the next token and updated lexer state." + def next(%__MODULE__{} = lexer) do + lexer = skip_trivia(lexer) + + lexer = %{lexer | token_start_line: lexer.line, token_start_column: lexer.column} + + if eof?(lexer) do + token(lexer, :eof, :eof, "", lexer.offset) + else + scan_token(lexer) + end + end + + defp collect(lexer, acc) do + lexer = skip_trivia(lexer) + lexer = %{lexer | token_start_line: lexer.line, token_start_column: lexer.column} + + if eof?(lexer) do + {eof_token, lexer} = token(lexer, :eof, :eof, "", lexer.offset) + tokens = Enum.reverse([eof_token | acc]) + + case lexer.errors do + [] -> {:ok, tokens} + errors -> {:error, tokens, Enum.reverse(errors)} + end + else + {token, lexer} = scan_token(lexer) + collect(lexer, [token | acc]) + end + end + + defp scan_token(lexer) do + ch = current(lexer) + + cond do + ch in [?", ?'] -> scan_string(lexer, ch) + ch == ?` -> scan_template(lexer) + ch in ?0..?9 -> scan_number(lexer) + ch == ?. -> scan_dot_or_number(lexer) + ch == ?/ and regexp_allowed?(lexer) -> scan_regexp(lexer) + ch == ?\\ and peek(lexer, 1) == ?u -> scan_identifier(lexer) + identifier_start?(ch) -> scan_identifier(lexer) + true -> scan_punctuator(lexer) + end + end + + defp scan_dot_or_number(lexer) do + case peek(lexer, 1) do + ch when ch in ?0..?9 -> scan_number(lexer) + _ -> scan_punctuator(lexer) + end + end + + defp scan_identifier(lexer) do + start = lexer.offset + + {lexer, value} = + if current(lexer) == ?\\ do + {lexer, parts} = scan_identifier_parts(lexer, []) + {lexer, parts |> Enum.reverse() |> IO.iodata_to_binary()} + else + {lexer, escaped?} = advance_identifier_raw(lexer) + raw = slice(lexer.source, start, lexer.offset) + + if escaped? do + {lexer, parts} = scan_identifier_parts(lexer, [raw]) + {lexer, parts |> Enum.reverse() |> IO.iodata_to_binary()} + else + {lexer, raw} + end + end + + raw = slice(lexer.source, start, lexer.offset) + + lexer = + if raw != value and value in ["true", "false", "null"] do + add_error(lexer, "escaped reserved word") + else + lexer + end + + cond do + value == "true" -> token_at(lexer, :boolean, true, raw, start) + value == "false" -> token_at(lexer, :boolean, false, raw, start) + value == "null" -> token_at(lexer, :null, nil, raw, start) + MapSet.member?(@keywords, value) -> token_at(lexer, :keyword, value, raw, start) + true -> token_at(lexer, :identifier, value, raw, start) + end + end + + defp advance_identifier_raw(%{offset: offset, length: length} = lexer) when offset >= length, + do: {lexer, false} + + defp advance_identifier_raw(%{source: source, offset: start, length: length} = lexer) do + {offset, reason} = advance_identifier_raw_offset(source, start, length) + lexer = %{lexer | offset: offset, column: lexer.column + offset - start} + + case reason do + :escape -> + {lexer, true} + + :non_ascii -> + if identifier_part?(codepoint_at(source, offset, length)) do + advance_identifier_raw(advance(lexer)) + else + {lexer, false} + end + + :stop -> + {lexer, false} + end + end + + defp advance_identifier_raw_offset(source, offset, length) when offset < length do + byte = :binary.at(source, offset) + + cond do + ascii_identifier_part?(byte) -> + advance_identifier_raw_offset(source, offset + 1, length) + + byte == ?\\ and byte_at(source, offset + 1, length) == ?u -> + {offset, :escape} + + byte < 0x80 -> + {offset, :stop} + + true -> + {offset, :non_ascii} + end + end + + defp advance_identifier_raw_offset(_source, offset, _length), do: {offset, :stop} + + defp scan_identifier_parts(lexer, acc) do + ch = current(lexer) + + cond do + ch == ?\\ and peek(lexer, 1) == ?u -> + scan_identifier_escape(lexer, acc) + + identifier_part?(ch) -> + scan_identifier_parts(advance(lexer), [<> | acc]) + + true -> + {lexer, acc} + end + end + + defp scan_identifier_escape(lexer, acc) do + cond do + unicode_brace_escape?(lexer) -> + scan_braced_identifier_escape(lexer, acc) + + true -> + case binary_part(lexer.source, lexer.offset, min(6, lexer.length - lexer.offset)) do + <<"\\u", hex::binary-size(4)>> -> + case Integer.parse(hex, 16) do + {codepoint, ""} when codepoint in 0..0xD7FF or codepoint in 0xE000..0x10FFFF -> + if valid_identifier_escape?(codepoint, acc) do + scan_identifier_parts(advance_ascii(lexer, 6), [<> | acc]) + else + {add_error(lexer, "invalid unicode escape in identifier") |> advance_ascii(2), + acc} + end + + _ -> + {add_error(lexer, "invalid unicode escape in identifier") |> advance_ascii(2), + acc} + end + + _ -> + {add_error(lexer, "invalid unicode escape in identifier") |> advance_ascii(2), acc} + end + end + end + + defp valid_identifier_escape?(codepoint, []), do: identifier_start?(codepoint) + defp valid_identifier_escape?(codepoint, _acc), do: identifier_part?(codepoint) + + defp unicode_brace_escape?(lexer) do + byte_at(lexer.source, lexer.offset, lexer.length) == ?\\ and + byte_at(lexer.source, lexer.offset + 1, lexer.length) == ?u and + byte_at(lexer.source, lexer.offset + 2, lexer.length) == ?{ + end + + defp scan_braced_identifier_escape(lexer, acc) do + rest = binary_part(lexer.source, lexer.offset + 3, lexer.length - lexer.offset - 3) + + case :binary.match(rest, "}") do + {finish, 1} -> + hex = binary_part(rest, 0, finish) + + case Integer.parse(hex, 16) do + {codepoint, ""} when codepoint in 0..0xD7FF or codepoint in 0xE000..0x10FFFF -> + if valid_identifier_escape?(codepoint, acc) do + scan_identifier_parts(advance_ascii(lexer, finish + 4), [<> | acc]) + else + {add_error(lexer, "invalid unicode escape in identifier") |> advance_ascii(3), acc} + end + + _ -> + {add_error(lexer, "invalid unicode escape in identifier") |> advance_ascii(3), acc} + end + + :nomatch -> + {add_error(lexer, "invalid unicode escape in identifier") |> advance_ascii(3), acc} + end + end + + defp scan_number(lexer) do + start = lexer.offset + + lexer = + cond do + number_prefix?(lexer, ?x, ?X) -> + lexer |> advance_ascii(2) |> advance_hex_digits() + + number_prefix?(lexer, ?b, ?B) -> + lexer |> advance_ascii(2) |> advance_binary_digits() + + number_prefix?(lexer, ?o, ?O) -> + lexer |> advance_ascii(2) |> advance_octal_digits() + + true -> + scan_decimal(lexer) + end + + lexer = if current(lexer) == ?n, do: advance(lexer), else: lexer + raw = slice(lexer.source, start, lexer.offset) + lexer = validate_number_literal(lexer, raw) + value = parse_number(raw) + token_at(lexer, :number, value, raw, start) + end + + defp scan_decimal(lexer) do + start = lexer.offset + lexer = advance_decimal_digits(lexer) + + lexer = + if decimal_fraction_start?(lexer, start) do + lexer |> advance() |> advance_decimal_digits() + else + lexer + end + + if current(lexer) in [?e, ?E] do + exponent = advance(lexer) + exponent = if current(exponent) in [?+, ?-], do: advance(exponent), else: exponent + advance_decimal_digits(exponent) + else + lexer + end + end + + defp advance_decimal_digits(%{source: source, offset: start, length: length} = lexer) do + offset = decimal_digits_end(source, start, length) + %{lexer | offset: offset, column: lexer.column + offset - start} + end + + defp decimal_digits_end(source, offset, length) when offset < length do + case :binary.at(source, offset) do + byte when byte in ?0..?9 or byte == ?_ -> decimal_digits_end(source, offset + 1, length) + _byte -> offset + end + end + + defp decimal_digits_end(_source, offset, _length), do: offset + + defp advance_hex_digits(%{source: source, offset: start, length: length} = lexer) do + offset = hex_digits_end(source, start, length) + %{lexer | offset: offset, column: lexer.column + offset - start} + end + + defp hex_digits_end(source, offset, length) when offset < length do + case :binary.at(source, offset) do + byte when byte in ?0..?9 or byte in ?a..?f or byte in ?A..?F or byte == ?_ -> + hex_digits_end(source, offset + 1, length) + + _byte -> + offset + end + end + + defp hex_digits_end(_source, offset, _length), do: offset + + defp advance_binary_digits(%{source: source, offset: start, length: length} = lexer) do + offset = binary_digits_end(source, start, length) + %{lexer | offset: offset, column: lexer.column + offset - start} + end + + defp binary_digits_end(source, offset, length) when offset < length do + case :binary.at(source, offset) do + byte when byte in [?0, ?1, ?_] -> binary_digits_end(source, offset + 1, length) + _byte -> offset + end + end + + defp binary_digits_end(_source, offset, _length), do: offset + + defp advance_octal_digits(%{source: source, offset: start, length: length} = lexer) do + offset = octal_digits_end(source, start, length) + %{lexer | offset: offset, column: lexer.column + offset - start} + end + + defp octal_digits_end(source, offset, length) when offset < length do + case :binary.at(source, offset) do + byte when byte in ?0..?7 or byte == ?_ -> octal_digits_end(source, offset + 1, length) + _byte -> offset + end + end + + defp octal_digits_end(_source, offset, _length), do: offset + + defp decimal_fraction_start?(lexer, start) do + current(lexer) == ?. and not leading_zero_member_access?(lexer, start) + end + + defp leading_zero_member_access?(lexer, start) do + raw = slice(lexer.source, start, lexer.offset) + byte_size(raw) > 1 and String.starts_with?(raw, "0") and identifier_start?(peek(lexer, 1)) + end + + defp parse_number(raw) do + raw + |> String.trim_trailing("n") + |> parse_normalized_number() + rescue + _ -> :nan + end + + defp parse_normalized_number(<<"0", prefix, _rest::binary>> = normalized) + when prefix in [?x, ?X], + do: parse_prefixed_int(normalized, 2, 16) + + defp parse_normalized_number(<<"0", prefix, _rest::binary>> = normalized) + when prefix in [?b, ?B], + do: parse_prefixed_int(normalized, 2, 2) + + defp parse_normalized_number(<<"0", prefix, _rest::binary>> = normalized) + when prefix in [?o, ?O], + do: parse_prefixed_int(normalized, 2, 8) + + defp parse_normalized_number(normalized) do + if String.contains?(normalized, [".", "e", "E"]) do + normalized + |> String.replace("_", "") + |> normalize_float_literal() + |> Float.parse() + |> elem(0) + else + normalized |> String.replace("_", "") |> Integer.parse() |> elem(0) + end + end + + defp normalize_float_literal(<<".", _::binary>> = raw), do: "0" <> raw + defp normalize_float_literal(raw), do: raw + + defp parse_prefixed_int(raw, trim, base) do + raw + |> binary_part(trim, byte_size(raw) - trim) + |> String.replace("_", "") + |> Integer.parse(base) + |> elem(0) + end + + defp number_prefix?(lexer, lower, upper) do + byte_at(lexer.source, lexer.offset, lexer.length) == ?0 and + byte_at(lexer.source, lexer.offset + 1, lexer.length) in [lower, upper] + end + + defp validate_number_literal(lexer, raw) do + normalized = String.trim_trailing(raw, "n") + prefixed? = prefixed_number?(raw) + + cond do + String.ends_with?(raw, "n") and not prefixed? and String.contains?(raw, [".", "e", "E"]) -> + add_error(lexer, "invalid bigint literal") + + legacy_octal_bigint?(raw) -> + add_error(lexer, "invalid number literal") + + String.ends_with?(raw, ".") and identifier_start?(current(lexer)) -> + add_error(lexer, "invalid number literal") + + not prefixed? and identifier_start?(current(lexer)) -> + add_error(lexer, "invalid number literal") + + not prefixed? and invalid_decimal_separator_position?(normalized) -> + add_error(lexer, "invalid number literal") + + bare_number_prefix?(normalized) -> + add_error(lexer, "invalid number literal") + + prefixed? and identifier_part?(current(lexer)) -> + add_error(lexer, "invalid number literal") + + not prefixed? and String.match?(normalized, ~r/[eE][+-]?(_|$)/) -> + add_error(lexer, "invalid number literal") + + not prefixed? and String.match?(raw, ~r/^0[0-9]*_/) -> + add_error(lexer, "invalid numeric separator") + + prefixed_numeric_separator_after_prefix?(raw) -> + add_error(lexer, "invalid numeric separator") + + String.starts_with?(normalized, "_") or String.ends_with?(normalized, "_") -> + add_error(lexer, "invalid numeric separator") + + String.contains?(raw, "__") -> + add_error(lexer, "invalid numeric separator") + + true -> + lexer + end + end + + defp legacy_octal_bigint?(<<"0", digit, _rest::binary>> = raw) + when digit in ?0..?9, + do: String.ends_with?(raw, "n") + + defp legacy_octal_bigint?(_raw), do: false + + defp invalid_decimal_separator_position?(raw) do + String.contains?(raw, ["._", "_.", "_e", "_E", "e_", "E_", "e+_", "e-_", "E+_", "E-_"]) + end + + defp prefixed_number?(<<"0", prefix, _rest::binary>>) when prefix in [?x, ?X, ?b, ?B, ?o, ?O], + do: true + + defp prefixed_number?(_raw), do: false + + defp bare_number_prefix?(prefix) when prefix in ["0x", "0X", "0b", "0B", "0o", "0O"], do: true + defp bare_number_prefix?(_raw), do: false + + defp prefixed_numeric_separator_after_prefix?(<<"0", prefix, "_", _rest::binary>>) + when prefix in [?x, ?X, ?b, ?B, ?o, ?O], + do: true + + defp prefixed_numeric_separator_after_prefix?(_raw), do: false + + defp scan_template(lexer) do + start = lexer.offset + lexer = lexer |> advance() |> scan_template_body(start) + raw = slice(lexer.source, start, lexer.offset) + token_at(lexer, :template, raw, raw, start) + end + + defp scan_template_body(lexer, start) do + cond do + eof?(lexer) -> + add_error(lexer, "unterminated template literal") + + current(lexer) == ?\\ -> + lexer |> advance() |> advance() |> scan_template_body(start) + + current(lexer) == ?` -> + advance(lexer) + + current(lexer) == ?$ and peek(lexer, 1) == ?{ -> + lexer |> advance_ascii(2) |> scan_template_expr(start, 1) |> scan_template_body(start) + + true -> + lexer |> advance() |> scan_template_body(start) + end + end + + defp scan_template_expr(lexer, _start, 0), do: lexer + + defp scan_template_expr(lexer, start, depth) do + cond do + eof?(lexer) -> + add_error(lexer, "unterminated template expression") + + current(lexer) in [?", ?'] -> + {_token, lexer} = scan_string(lexer, current(lexer)) + lexer |> Map.put(:last_token, nil) |> scan_template_expr(start, depth) + + current(lexer) == ?` -> + lexer |> advance() |> scan_template_body(start) |> scan_template_expr(start, depth) + + current(lexer) == ?{ -> + lexer |> advance() |> scan_template_expr(start, depth + 1) + + current(lexer) == ?} -> + lexer = advance(lexer) + if depth == 1, do: lexer, else: scan_template_expr(lexer, start, depth - 1) + + true -> + lexer |> advance() |> scan_template_expr(start, depth) + end + end + + defp scan_regexp(lexer) do + start = lexer.offset + lexer = advance(lexer) + scan_regexp_body(lexer, start, false) + end + + defp scan_regexp_body(lexer, start, in_class?) do + cond do + eof?(lexer) -> + raw = slice(lexer.source, start, lexer.offset) + lexer = add_error(lexer, "unterminated regular expression literal") + token_at(lexer, :regexp, %{pattern: raw, flags: ""}, raw, start) + + line_terminator?(current(lexer)) -> + raw = slice(lexer.source, start, lexer.offset) + lexer = add_error(lexer, "unterminated regular expression literal") + token_at(lexer, :regexp, %{pattern: raw, flags: ""}, raw, start) + + current(lexer) == ?\\ and line_terminator?(peek(lexer, 1)) -> + raw = slice(lexer.source, start, lexer.offset) + lexer = add_error(lexer, "unterminated regular expression literal") + token_at(lexer, :regexp, %{pattern: raw, flags: ""}, raw, start) + + current(lexer) == ?\\ -> + lexer |> advance() |> advance() |> scan_regexp_body(start, in_class?) + + current(lexer) == ?[ -> + lexer |> advance() |> scan_regexp_body(start, true) + + current(lexer) == ?] and in_class? -> + lexer |> advance() |> scan_regexp_body(start, false) + + current(lexer) == ?/ and not in_class? -> + lexer = advance(lexer) + lexer = advance_while(lexer, ®exp_flag_part?/1) + raw = slice(lexer.source, start, lexer.offset) + {pattern, flags} = split_regexp(raw) + + lexer = + cond do + error = Regexp.regexp_flags_error(flags) -> + add_error(lexer, error) + + error = Regexp.regexp_modifier_group_error(pattern) -> + add_error(lexer, error) + + error = Regexp.regexp_quantifier_error(pattern, flags) -> + add_error(lexer, error) + + error = Regexp.regexp_named_group_error(pattern, flags) -> + add_error(lexer, error) + + error = Regexp.regexp_unicode_escape_error(pattern, flags) -> + add_error(lexer, error) + + error = Regexp.regexp_class_range_error(pattern, flags) -> + add_error(lexer, error) + + error = Regexp.regexp_property_escape_error(pattern, flags) -> + add_error(lexer, error) + + true -> + lexer + end + + token_at(lexer, :regexp, %{pattern: pattern, flags: flags}, raw, start) + + true -> + lexer |> advance() |> scan_regexp_body(start, in_class?) + end + end + + defp split_regexp(raw) do + body = binary_part(raw, 1, byte_size(raw) - 1) + idx = closing_regexp_slash(body, 0, false) + pattern = binary_part(body, 0, idx) + flags = binary_part(body, idx + 1, byte_size(body) - idx - 1) + {pattern, flags} + end + + defp closing_regexp_slash(<<>>, idx, _in_class?), do: idx + + defp closing_regexp_slash(<>, idx, in_class?), + do: closing_regexp_slash(rest, idx + 2, in_class?) + + defp closing_regexp_slash(<>, idx, _in_class?), + do: closing_regexp_slash(rest, idx + 1, true) + + defp closing_regexp_slash(<>, idx, true), + do: closing_regexp_slash(rest, idx + 1, false) + + defp closing_regexp_slash(<>, idx, false), do: idx + + defp closing_regexp_slash(<>, idx, in_class?), + do: closing_regexp_slash(rest, idx + utf8_size(ch), in_class?) + + defp regexp_flag_part?(ch), do: identifier_part?(ch) and not unicode_trivia?(ch) + + defp scan_string(lexer, quote) do + start = lexer.offset + lexer = advance(lexer) + scan_string_body(lexer, quote, start, lexer.offset, []) + end + + defp scan_string_body( + %{source: source, offset: offset, length: length} = lexer, + quote, + start, + span_start, + acc + ) do + if offset >= length do + raw = slice(source, start, offset) + lexer = add_error(lexer, "unterminated string literal") + token_at(lexer, :string, finish_string(acc, source, span_start, offset), raw, start) + else + byte = :binary.at(source, offset) + + cond do + byte == quote -> + lexer = advance(lexer) + raw = slice(source, start, lexer.offset) + token_at(lexer, :string, finish_string(acc, source, span_start, offset), raw, start) + + byte in [?\n, ?\r] -> + raw = slice(source, start, offset) + lexer = add_error(lexer, "unterminated string literal") + token_at(lexer, :string, finish_string(acc, source, span_start, offset), raw, start) + + byte == ?\\ -> + acc = prepend_string_span(acc, source, span_start, offset) + {escaped, lexer} = scan_escape(advance(lexer)) + scan_string_body(lexer, quote, start, lexer.offset, [escaped | acc]) + + byte >= 0x80 -> + ch = codepoint_at(source, offset, length) + + if ch in [0x2028, 0x2029] do + acc = prepend_string_span(acc, source, span_start, offset) + + scan_string_body(advance(lexer), quote, start, advance(lexer).offset, [ + <> | acc + ]) + else + scan_string_body(advance(lexer), quote, start, span_start, acc) + end + + true -> + scan_string_body( + %{lexer | offset: offset + 1, column: lexer.column + 1}, + quote, + start, + span_start, + acc + ) + end + end + end + + defp prepend_string_span(acc, _source, same, same), do: acc + + defp prepend_string_span(acc, source, span_start, span_end), + do: [binary_part(source, span_start, span_end - span_start) | acc] + + defp finish_string(acc, source, span_start, span_end) do + acc + |> prepend_string_span(source, span_start, span_end) + |> Enum.reverse() + |> IO.iodata_to_binary() + end + + defp scan_escape(lexer) do + case current(lexer) do + ?n -> {"\n", advance_ascii(lexer, 1)} + ?r -> {"\r", advance_ascii(lexer, 1)} + ?t -> {"\t", advance_ascii(lexer, 1)} + ?b -> {"\b", advance_ascii(lexer, 1)} + ?f -> {"\f", advance_ascii(lexer, 1)} + ?v -> {<<11>>, advance_ascii(lexer, 1)} + ?0 -> {<<0>>, advance_ascii(lexer, 1)} + ?x -> scan_fixed_string_escape(advance_ascii(lexer, 1), 2) + ?u -> scan_unicode_string_escape(advance_ascii(lexer, 1)) + ch when ch in [?\n, ?\r, 0x2028, 0x2029] -> {"", consume_line_terminator(lexer)} + ch when is_integer(ch) -> {<>, advance(lexer)} + nil -> {"", lexer} + end + end + + defp scan_fixed_string_escape(lexer, digits) do + case take_hex_escape(lexer, digits) do + {:ok, codepoint, lexer} -> {string_escape_value(codepoint), lexer} + :error -> {"", add_error(lexer, "invalid string escape")} + end + end + + defp scan_unicode_string_escape(lexer) do + cond do + current(lexer) == ?{ -> + scan_braced_string_escape(advance(lexer)) + + true -> + scan_fixed_string_escape(lexer, 4) + end + end + + defp scan_braced_string_escape(lexer) do + rest = binary_part(lexer.source, lexer.offset, lexer.length - lexer.offset) + + case :binary.match(rest, "}") do + {finish, 1} -> + hex = binary_part(rest, 0, finish) + + case Integer.parse(hex, 16) do + {codepoint, ""} when codepoint in 0..0x10FFFF -> + {string_escape_value(codepoint), advance_ascii(lexer, finish + 1)} + + _ -> + {"", add_error(lexer, "invalid string escape")} + end + + :nomatch -> + {"", add_error(lexer, "invalid string escape")} + end + end + + defp take_hex_escape(lexer, digits) do + if lexer.offset + digits <= lexer.length do + hex = binary_part(lexer.source, lexer.offset, digits) + + case Integer.parse(hex, 16) do + {codepoint, ""} when codepoint in 0..0xFFFF -> + {:ok, codepoint, advance_ascii(lexer, digits)} + + _ -> + :error + end + else + :error + end + end + + defp string_escape_value(codepoint) when codepoint in 0xD800..0xDFFF, do: <> + defp string_escape_value(codepoint), do: <> + + defp scan_punctuator(lexer) do + case punctuator_at(lexer) do + nil -> + raw = slice(lexer.source, lexer.offset, lexer.offset + 1) + lexer = lexer |> add_error("unexpected character #{inspect(raw)}") |> advance() + token_at(lexer, :punctuator, raw, raw, lexer.offset - 1) + + punctuator -> + start = lexer.offset + size = byte_size(punctuator) + lexer = %{lexer | offset: start + size, column: lexer.column + size} + token_at(lexer, :punctuator, punctuator, punctuator, start) + end + end + + defp punctuator_at(%{source: source, offset: offset, length: length}) do + b0 = :binary.at(source, offset) + b1 = byte_at(source, offset + 1, length) + b2 = byte_at(source, offset + 2, length) + b3 = byte_at(source, offset + 3, length) + + case {b0, b1, b2, b3} do + {?>, ?>, ?>, ?=} -> ">>>=" + {?=, ?=, ?=, _} -> "===" + {?!, ?=, ?=, _} -> "!==" + {?>, ?>, ?>, _} -> ">>>" + {?<, ?<, ?=, _} -> "<<=" + {?>, ?>, ?=, _} -> ">>=" + {?*, ?*, ?=, _} -> "**=" + {?&, ?&, ?=, _} -> "&&=" + {?|, ?|, ?=, _} -> "||=" + {??, ??, ?=, _} -> "??=" + {?., ?., ?., _} -> "..." + {?=, ?>, _, _} -> "=>" + {?+, ?+, _, _} -> "++" + {?-, ?-, _, _} -> "--" + {?=, ?=, _, _} -> "==" + {?!, ?=, _, _} -> "!=" + {?<, ?=, _, _} -> "<=" + {?>, ?=, _, _} -> ">=" + {?&, ?&, _, _} -> "&&" + {?|, ?|, _, _} -> "||" + {??, ??, _, _} -> "??" + {??, ?., next, _} when next not in ?0..?9 and next != nil -> "?." + {?*, ?*, _, _} -> "**" + {?<, ?<, _, _} -> "<<" + {?>, ?>, _, _} -> ">>" + {?+, ?=, _, _} -> "+=" + {?-, ?=, _, _} -> "-=" + {?*, ?=, _, _} -> "*=" + {?/, ?=, _, _} -> "/=" + {?%, ?=, _, _} -> "%=" + {?&, ?=, _, _} -> "&=" + {?|, ?=, _, _} -> "|=" + {?^, ?=, _, _} -> "^=" + {ch, _, _, _} when ch in ~c"{}()[].;,<>+-*/%&|^!~?:#=@" -> <> + _ -> nil + end + end + + defp skip_trivia(%{offset: offset, length: length} = lexer) when offset >= length, do: lexer + + defp skip_trivia(%{source: source, offset: offset} = lexer) do + byte = :binary.at(source, offset) + + cond do + byte == ?\s or byte == ?\t -> + lexer |> skip_horizontal_space() |> skip_trivia() + + byte == ?\n or byte == ?\r -> + lexer |> consume_line_terminator() |> skip_trivia() + + byte == ?/ -> + case byte_at(source, offset + 1, lexer.length) do + ?/ -> lexer |> skip_line_comment() |> skip_trivia() + ?* -> lexer |> skip_block_comment() |> skip_trivia() + _ -> lexer + end + + html_open_comment?(source, offset, lexer.length) -> + lexer |> skip_html_open_comment() |> skip_trivia() + + html_close_comment?(lexer, source, offset) -> + lexer |> skip_html_close_comment() |> skip_trivia() + + byte == ?\v or byte == ?\f -> + lexer |> skip_horizontal_space() |> skip_trivia() + + byte >= 0x80 and unicode_trivia?(current(lexer)) -> + lexer |> advance() |> skip_trivia() + + offset == 0 and byte == ?# and byte_at(source, offset + 1, lexer.length) == ?! -> + lexer |> skip_hashbang_comment() |> skip_trivia() + + true -> + lexer + end + end + + defp skip_horizontal_space(%{source: source, offset: offset, length: length} = lexer) do + finish = horizontal_space_end(source, offset, length) + %{lexer | offset: finish, column: lexer.column + finish - offset} + end + + defp horizontal_space_end(source, offset, length) when offset < length do + case :binary.at(source, offset) do + byte when byte in [?\s, ?\t, ?\v, ?\f] -> horizontal_space_end(source, offset + 1, length) + _byte -> offset + end + end + + defp horizontal_space_end(_source, offset, _length), do: offset + + defp skip_hashbang_comment(%{source: source, offset: offset, length: length} = lexer) do + skip_to_line_end(lexer, source, offset + 2, length) + end + + defp skip_line_comment(%{source: source, offset: offset, length: length} = lexer) do + skip_to_line_end(lexer, source, offset + 2, length) + end + + defp skip_html_open_comment(%{source: source, offset: offset, length: length} = lexer) do + skip_to_line_end(lexer, source, offset + 4, length) + end + + defp skip_html_close_comment(%{source: source, offset: offset, length: length} = lexer) do + skip_to_line_end(lexer, source, offset + 3, length) + end + + defp html_open_comment?(source, offset, length) do + byte_at(source, offset, length) == ?< and byte_at(source, offset + 1, length) == ?! and + byte_at(source, offset + 2, length) == ?- and byte_at(source, offset + 3, length) == ?- + end + + defp html_close_comment?(%{offset: offset} = lexer, source, offset) do + html_close_comment_start?(lexer) and byte_at(source, offset, lexer.length) == ?- and + byte_at(source, offset + 1, lexer.length) == ?- and + byte_at(source, offset + 2, lexer.length) == ?> + end + + defp html_close_comment_start?(lexer), + do: + lexer.offset == 0 or lexer.pending_line_terminator? or lexer.column == 0 or + (lexer.line == 1 and is_nil(lexer.last_token)) + + defp skip_to_line_end(lexer, source, offset, length) when offset < length do + byte = :binary.at(source, offset) + + cond do + byte == ?\n or byte == ?\r -> + %{lexer | offset: offset, column: lexer.column + offset - lexer.offset} + + byte < 0x80 -> + skip_to_line_end(lexer, source, offset + 1, length) + + true -> + ch = codepoint_at(source, offset, length) + + if line_terminator?(ch) do + %{lexer | offset: offset, column: lexer.column + offset - lexer.offset} + else + skip_to_line_end(lexer, source, offset + utf8_size(ch), length) + end + end + end + + defp skip_to_line_end(lexer, _source, offset, _length) do + %{lexer | offset: offset, column: lexer.column + offset - lexer.offset} + end + + defp skip_block_comment(%{source: source, offset: offset, length: length} = lexer) do + start = offset + 2 + rest = binary_part(source, start, length - start) + + case :binary.match(rest, "*/") do + :nomatch -> + lexer + |> advance_ascii(2) + |> add_error("unterminated block comment") + + {finish, 2} -> + skipped = binary_part(source, offset, finish + 4) + {line_delta, column} = comment_position(skipped, lexer.column) + + %{ + lexer + | offset: offset + byte_size(skipped), + line: lexer.line + line_delta, + column: column, + pending_line_terminator?: lexer.pending_line_terminator? or line_delta > 0 + } + end + end + + defp comment_position(skipped, initial_column) do + if :binary.match(skipped, ["\n", "\r", <<0x2028::utf8>>, <<0x2029::utf8>>]) == :nomatch do + {0, initial_column + byte_size(skipped)} + else + comment_position(skipped, 0, initial_column) + end + end + + defp comment_position(<<>>, lines, column), do: {lines, column} + + defp comment_position(<>, lines, _column) when byte in [?\n, ?\r], + do: comment_position(rest, lines + 1, 0) + + defp comment_position(<>, lines, _column) + when ch in [0x2028, 0x2029], + do: comment_position(rest, lines + 1, 0) + + defp comment_position(<>, lines, column), + do: comment_position(rest, lines, column + utf8_size(ch)) + + defp token_at(lexer, type, value, raw, start) do + token = %Token{ + type: type, + value: value, + raw: raw, + start: start, + finish: lexer.offset, + line: lexer.token_start_line, + column: lexer.token_start_column, + before_line_terminator?: lexer.pending_line_terminator? + } + + {token, %{lexer | pending_line_terminator?: false, last_token: token}} + end + + defp token(lexer, type, value, raw, start), do: token_at(lexer, type, value, raw, start) + + defp add_error(lexer, message) do + error = %Error{message: message, line: lexer.line, column: lexer.column, offset: lexer.offset} + %{lexer | errors: [error | lexer.errors]} + end + + defp advance_while(lexer, pred) do + if pred.(current(lexer)), do: lexer |> advance() |> advance_while(pred), else: lexer + end + + defp advance_bytes(lexer, 0), do: lexer + defp advance_bytes(lexer, count), do: lexer |> advance() |> advance_bytes(count - 1) + + defp advance_ascii(lexer, count), + do: %{lexer | offset: lexer.offset + count, column: lexer.column + count} + + defp advance(%{offset: offset, length: length} = lexer) when offset >= length, do: lexer + + defp advance(%{source: source, offset: offset} = lexer) do + byte = :binary.at(source, offset) + + cond do + byte == ?\n or byte == ?\r -> + %{ + lexer + | offset: offset + 1, + line: lexer.line + 1, + column: 0, + pending_line_terminator?: true + } + + byte < 0x80 -> + %{lexer | offset: offset + 1, column: lexer.column + 1} + + true -> + ch = codepoint_at(source, offset, lexer.length) + size = utf8_size(ch) + + if line_terminator?(ch) do + %{ + lexer + | offset: offset + size, + line: lexer.line + 1, + column: 0, + pending_line_terminator?: true + } + else + %{lexer | offset: offset + size, column: lexer.column + 1} + end + end + end + + defp consume_line_terminator(lexer) do + if byte_at(lexer.source, lexer.offset, lexer.length) == ?\r and + byte_at(lexer.source, lexer.offset + 1, lexer.length) == ?\n, + do: advance_bytes(lexer, 2), + else: advance(lexer) + end + + defp current(%{source: source, offset: offset, length: length}) do + codepoint_at(source, offset, length) + end + + defp peek(%{source: source, offset: offset, length: length}, relative) do + codepoint_at(source, offset + relative, length) + end + + defp codepoint_at(_source, offset, length) when offset >= length, do: nil + + defp codepoint_at(source, offset, length) do + byte = :binary.at(source, offset) + + if byte < 0x80 do + byte + else + case binary_part(source, offset, length - offset) do + <> -> ch + <> -> byte + end + end + end + + defp byte_at(_source, offset, length) when offset >= length, do: nil + defp byte_at(source, offset, _length), do: :binary.at(source, offset) + + defp eof?(lexer), do: lexer.offset >= lexer.length + + defp slice(source, start, finish), do: binary_part(source, start, finish - start) + + defp ascii_identifier_part?(byte) + when (byte >= ?a and byte <= ?z) or (byte >= ?A and byte <= ?Z) or + (byte >= ?0 and byte <= ?9) or byte == ?_ or byte == ?$, + do: true + + defp ascii_identifier_part?(_byte), do: false + + defp identifier_start?(nil), do: false + defp identifier_start?(?_), do: true + defp identifier_start?(?$), do: true + + defp identifier_start?(ch) when ch in [0x180E, 0x200C, 0x200D, 0x2028, 0x2029, 0x2E2F], + do: false + + defp identifier_start?(ch), + do: ch in ?a..?z or ch in ?A..?Z or (ch > 0x7F and not unicode_trivia?(ch)) + + defp identifier_part?(nil), do: false + defp identifier_part?(ch) when ch in [0x200C, 0x200D], do: true + defp identifier_part?(ch), do: identifier_start?(ch) or ch in ?0..?9 + + defp regexp_allowed?(%{last_token: nil}), do: true + + defp regexp_allowed?(%{last_token: %Token{type: type}}) + when type in [:identifier, :number, :string, :regexp, :boolean, :null], + do: false + + defp regexp_allowed?(%{last_token: %Token{type: :keyword, value: "yield"}} = lexer), + do: regexp_literal_ahead?(lexer) + + defp regexp_allowed?(%{last_token: %Token{type: :keyword, value: value}}), + do: not MapSet.member?(@identifier_like_keywords, value) + + defp regexp_allowed?(%{last_token: %Token{value: value}}) when value in [")", "]", "++", "--"], + do: false + + defp regexp_allowed?(%{last_token: %Token{value: "}"}} = lexer), + do: not division_rhs_after_slash?(lexer) + + defp regexp_allowed?(_lexer), do: true + + defp regexp_literal_ahead?(lexer), do: regexp_literal_ahead?(lexer, lexer.offset + 1, false) + + defp regexp_literal_ahead?(%{length: length}, offset, _in_class?) when offset >= length, + do: false + + defp regexp_literal_ahead?(lexer, offset, in_class?) do + case :binary.at(lexer.source, offset) do + ?; -> false + ?\n -> false + ?\r -> false + ?/ when not in_class? -> true + ?\\ -> regexp_literal_ahead?(lexer, offset + 2, in_class?) + ?[ when not in_class? -> regexp_literal_ahead?(lexer, offset + 1, true) + ?] when in_class? -> regexp_literal_ahead?(lexer, offset + 1, false) + _ch -> regexp_literal_ahead?(lexer, offset + 1, in_class?) + end + end + + defp division_rhs_after_slash?(lexer) do + rhs_offset = skip_horizontal_space_after_slash(lexer, lexer.offset + 1) + rhs_offset > lexer.offset + 1 and division_rhs_start?(rhs_offset, lexer) + end + + defp skip_horizontal_space_after_slash(lexer, offset) when offset < lexer.length do + case byte_at(lexer.source, offset, lexer.length) do + byte when byte in [?\s, ?\t, ?\v, ?\f] -> + skip_horizontal_space_after_slash(lexer, offset + 1) + + _ -> + offset + end + end + + defp skip_horizontal_space_after_slash(_lexer, offset), do: offset + + defp division_rhs_start?(offset, lexer) when offset < lexer.length do + ch = codepoint_at(lexer.source, offset, lexer.length) + ch in [?{, ?(, ?[, ?", ?', ?+, ?-, ?!, ?~, ?/] or ch in ?0..?9 or identifier_start?(ch) + end + + defp division_rhs_start?(_offset, _lexer), do: false + + defp line_terminator?(ch), do: ch in [?\n, ?\r, 0x2028, 0x2029] + + defp unicode_trivia?(ch), + do: + line_terminator?(ch) or + ch in [ + 0x00A0, + 0x1680, + 0x2000, + 0x2001, + 0x2002, + 0x2003, + 0x2004, + 0x2005, + 0x2006, + 0x2007, + 0x2008, + 0x2009, + 0x200A, + 0x202F, + 0x205F, + 0x3000, + 0xFEFF + ] + + defp utf8_size(ch) when ch < 0x80, do: 1 + defp utf8_size(ch) when ch < 0x800, do: 2 + defp utf8_size(ch) when ch < 0x10000, do: 3 + defp utf8_size(_ch), do: 4 +end diff --git a/lib/quickbeam/js/parser/lexer/regexp.ex b/lib/quickbeam/js/parser/lexer/regexp.ex new file mode 100644 index 000000000..da1a9919e --- /dev/null +++ b/lib/quickbeam/js/parser/lexer/regexp.ex @@ -0,0 +1,197 @@ +defmodule QuickBEAM.JS.Parser.Lexer.Regexp do + @moduledoc "Regular-expression literal validation helpers for the JavaScript lexer." + + def regexp_flags_error(flags) do + chars = String.graphemes(flags) + + cond do + Enum.any?(chars, &(&1 not in ~w[d g i m s u v y])) -> + "invalid regular expression flags" + + length(chars) != length(Enum.uniq(chars)) -> + "invalid regular expression flags" + + binary_part?(flags, "u") and binary_part?(flags, "v") -> + "invalid regular expression flags" + + true -> + nil + end + end + + def regexp_modifier_group_error(pattern), do: regexp_modifier_group_error(pattern, 0) + + defp regexp_modifier_group_error(pattern, offset) when offset >= byte_size(pattern), do: nil + + defp regexp_modifier_group_error(pattern, offset) do + case :binary.match(pattern, "(?", scope: {offset, byte_size(pattern) - offset}) do + :nomatch -> + nil + + {index, 2} -> + spec_start = index + 2 + + cond do + modifier_group_exempt?(pattern, spec_start) -> + regexp_modifier_group_error(pattern, spec_start + 1) + + {spec, next_offset} = read_regexp_modifier_spec(pattern, spec_start) -> + if next_offset > 0 and :binary.at(pattern, next_offset - 1) == ?) do + "invalid group" + else + if valid_regexp_modifier_spec?(spec) do + regexp_modifier_group_error(pattern, next_offset) + else + "invalid group" + end + end + end + end + end + + defp modifier_group_exempt?(pattern, index) do + index < byte_size(pattern) and + :binary.at(pattern, index) in [?:, ?=, ?!, ?<] + end + + defp read_regexp_modifier_spec(pattern, index), + do: read_regexp_modifier_spec(pattern, index, []) + + defp read_regexp_modifier_spec(pattern, index, acc) when index >= byte_size(pattern), + do: {to_string(Enum.reverse(acc)), index} + + defp read_regexp_modifier_spec(pattern, index, acc) do + ch = :binary.at(pattern, index) + + if ch == ?: or ch == ?) do + {to_string(Enum.reverse(acc)), index + 1} + else + read_regexp_modifier_spec(pattern, index + 1, [ch | acc]) + end + end + + defp valid_regexp_modifier_spec?(spec) do + case String.split(spec, "-", parts: 3) do + [add] -> + valid_regexp_modifier_flags?(add) and add != "" + + [add, remove] -> + valid_regexp_modifier_flags?(add) and valid_regexp_modifier_flags?(remove) and add != "" and + remove != "" and disjoint_modifier_flags?(add, remove) + + _ -> + false + end + end + + defp valid_regexp_modifier_flags?(flags) do + chars = String.graphemes(flags) + Enum.all?(chars, &(&1 in ["i", "m", "s"])) and length(chars) == length(Enum.uniq(chars)) + end + + defp disjoint_modifier_flags?(left, right) do + left = left |> String.graphemes() |> MapSet.new() + right = right |> String.graphemes() |> MapSet.new() + MapSet.disjoint?(left, right) + end + + def regexp_quantifier_error(pattern, flags) do + cond do + String.match?(pattern, ~r/^([*+?]|\{\d)/) -> + "nothing to repeat" + + regexp_quantified_lookbehind?(pattern) -> + "nothing to repeat" + + binary_part?(flags, "u") and String.match?(pattern, ~r/\(\?[=!][^)]*\)([*+?]|\{\d)/) -> + "nothing to repeat" + + true -> + nil + end + end + + defp regexp_quantified_lookbehind?(pattern), + do: regexp_quantified_lookbehind?(pattern, 0) + + defp regexp_quantified_lookbehind?(pattern, offset) when offset >= byte_size(pattern), do: false + + defp regexp_quantified_lookbehind?(pattern, offset) do + case :binary.match(pattern, "(?<", scope: {offset, byte_size(pattern) - offset}) do + :nomatch -> + false + + {index, 3} -> + marker_offset = index + 3 + + if marker_offset < byte_size(pattern) and :binary.at(pattern, marker_offset) in [?=, ?!] do + close_offset = regexp_group_close_offset(pattern, marker_offset + 1, 1, false) + + if quantified_regexp_atom_at?(pattern, close_offset + 1) do + true + else + regexp_quantified_lookbehind?(pattern, marker_offset + 1) + end + else + regexp_quantified_lookbehind?(pattern, marker_offset) + end + end + end + + defp regexp_group_close_offset(pattern, offset, _depth, _in_class?) + when offset >= byte_size(pattern), + do: byte_size(pattern) + + defp regexp_group_close_offset(pattern, offset, depth, in_class?) do + ch = :binary.at(pattern, offset) + + cond do + ch == ?\\ -> + regexp_group_close_offset(pattern, min(offset + 2, byte_size(pattern)), depth, in_class?) + + ch == ?[ and not in_class? -> + regexp_group_close_offset(pattern, offset + 1, depth, true) + + ch == ?] and in_class? -> + regexp_group_close_offset(pattern, offset + 1, depth, false) + + in_class? -> + regexp_group_close_offset(pattern, offset + 1, depth, true) + + ch == ?( -> + regexp_group_close_offset(pattern, offset + 1, depth + 1, false) + + ch == ?) and depth == 1 -> + offset + + ch == ?) -> + regexp_group_close_offset(pattern, offset + 1, depth - 1, false) + + true -> + regexp_group_close_offset(pattern, offset + 1, depth, false) + end + end + + defp quantified_regexp_atom_at?(pattern, offset) when offset >= byte_size(pattern), do: false + + defp quantified_regexp_atom_at?(pattern, offset) do + ch = :binary.at(pattern, offset) + + ch in [?*, ?+, ??] or + (ch == ?{ and offset + 1 < byte_size(pattern) and :binary.at(pattern, offset + 1) in ?0..?9) + end + + def regexp_named_group_error(pattern, flags), + do: QuickBEAM.JS.Parser.Lexer.Regexp.Groups.regexp_named_group_error(pattern, flags) + + def regexp_unicode_escape_error(pattern, flags), + do: QuickBEAM.JS.Parser.Lexer.Regexp.Escapes.regexp_unicode_escape_error(pattern, flags) + + def regexp_class_range_error(pattern, flags), + do: QuickBEAM.JS.Parser.Lexer.Regexp.Properties.regexp_class_range_error(pattern, flags) + + def regexp_property_escape_error(pattern, flags), + do: QuickBEAM.JS.Parser.Lexer.Regexp.Properties.regexp_property_escape_error(pattern, flags) + + defp binary_part?(binary, part), do: :binary.match(binary, part) != :nomatch +end diff --git a/lib/quickbeam/js/parser/lexer/regexp/escapes.ex b/lib/quickbeam/js/parser/lexer/regexp/escapes.ex new file mode 100644 index 000000000..88443c706 --- /dev/null +++ b/lib/quickbeam/js/parser/lexer/regexp/escapes.ex @@ -0,0 +1,190 @@ +defmodule QuickBEAM.JS.Parser.Lexer.Regexp.Escapes do + @moduledoc "Unicode, decimal, and identity escape validation." + + def regexp_unicode_escape_error(pattern, flags) do + if is_binary(flags) and (binary_part?(flags, "u") or binary_part?(flags, "v")) do + regexp_unicode_escape_error_in_pattern(pattern, 0) + end + end + + defp regexp_unicode_escape_error_in_pattern(pattern, offset) when offset >= byte_size(pattern), + do: regexp_lone_left_brace_error(pattern, 0) + + defp regexp_unicode_escape_error_in_pattern(pattern, offset) do + case :binary.match(pattern, "\\", scope: {offset, byte_size(pattern) - offset}) do + :nomatch -> + regexp_unicode_escape_error_in_pattern(pattern, byte_size(pattern)) + + {index, 1} -> + next = index + 1 + + cond do + next >= byte_size(pattern) -> + "invalid escape sequence in regular expression" + + :binary.at(pattern, next) == ?u -> + validate_regexp_unicode_escape(pattern, next + 1) || + regexp_unicode_escape_error_in_pattern(pattern, next + 1) + + :binary.at(pattern, next) in ?1..?9 -> + regexp_decimal_escape_error(pattern, next) + + :binary.at(pattern, next) in [?p, ?P] and next + 1 < byte_size(pattern) and + :binary.at(pattern, next + 1) == ?{ -> + regexp_unicode_escape_error_in_pattern( + pattern, + skip_regexp_braced_escape(pattern, next + 2) + ) + + :binary.at(pattern, next) == ?c and + (next + 1 >= byte_size(pattern) or not ascii_letter?(:binary.at(pattern, next + 1))) -> + "invalid escape sequence in regular expression" + + regexp_invalid_identity_escape?(:binary.at(pattern, next)) -> + "invalid escape sequence in regular expression" + + true -> + regexp_unicode_escape_error_in_pattern(pattern, next + 1) + end + end + end + + defp validate_regexp_unicode_escape(pattern, index) do + cond do + index < byte_size(pattern) and :binary.at(pattern, index) == ?{ -> + validate_regexp_braced_unicode_escape(pattern, index + 1) + + index + 4 <= byte_size(pattern) and + Enum.all?(index..(index + 3), &hex_digit_byte?(:binary.at(pattern, &1))) -> + nil + + true -> + "invalid escape sequence in regular expression" + end + end + + defp validate_regexp_braced_unicode_escape(pattern, index), + do: validate_regexp_braced_unicode_escape(pattern, index, false, 0) + + defp validate_regexp_braced_unicode_escape(pattern, index, _saw_digit?, _codepoint) + when index >= byte_size(pattern), + do: "invalid escape sequence in regular expression" + + defp validate_regexp_braced_unicode_escape(pattern, index, saw_digit?, codepoint) do + ch = :binary.at(pattern, index) + + cond do + ch == ?} and saw_digit? and codepoint <= 0x10FFFF -> + nil + + ch == ?} -> + "invalid escape sequence in regular expression" + + hex_digit_byte?(ch) -> + validate_regexp_braced_unicode_escape( + pattern, + index + 1, + true, + codepoint * 16 + hex_digit_value(ch) + ) + + true -> + "invalid escape sequence in regular expression" + end + end + + defp skip_regexp_braced_escape(pattern, offset) when offset >= byte_size(pattern), do: offset + + defp skip_regexp_braced_escape(pattern, offset) do + if :binary.at(pattern, offset) == ?} do + offset + 1 + else + skip_regexp_braced_escape(pattern, offset + 1) + end + end + + defp regexp_decimal_escape_error(pattern, index) do + {number, _next_offset} = read_decimal_escape_number(pattern, index, 0) + + if number > regexp_capture_count(pattern) do + "back reference out of range in regular expression" + end + end + + defp read_decimal_escape_number(pattern, offset, value) + when offset >= byte_size(pattern), + do: {value, offset} + + defp read_decimal_escape_number(pattern, offset, value) do + ch = :binary.at(pattern, offset) + + if ch in ?0..?9 do + read_decimal_escape_number(pattern, offset + 1, value * 10 + ch - ?0) + else + {value, offset} + end + end + + defp regexp_capture_count(pattern), do: regexp_capture_count(pattern, 0, 0) + + defp regexp_capture_count(pattern, offset, count) when offset >= byte_size(pattern), do: count + + defp regexp_capture_count(pattern, offset, count) do + cond do + :binary.at(pattern, offset) == ?\\ -> + regexp_capture_count(pattern, min(offset + 2, byte_size(pattern)), count) + + offset + 1 < byte_size(pattern) and :binary.at(pattern, offset) == ?( and + :binary.at(pattern, offset + 1) == ?? and + not (offset + 2 < byte_size(pattern) and :binary.at(pattern, offset + 2) == ?<) -> + regexp_capture_count(pattern, offset + 2, count) + + :binary.at(pattern, offset) == ?( -> + regexp_capture_count(pattern, offset + 1, count + 1) + + true -> + regexp_capture_count(pattern, offset + 1, count) + end + end + + defp regexp_lone_left_brace_error(pattern, offset) when offset >= byte_size(pattern), do: nil + + defp regexp_lone_left_brace_error(pattern, offset) do + ch = :binary.at(pattern, offset) + + cond do + ch == ?\\ and offset + 2 < byte_size(pattern) and + :binary.at(pattern, offset + 1) in [?p, ?P] and + :binary.at(pattern, offset + 2) == ?{ -> + regexp_lone_left_brace_error(pattern, skip_regexp_braced_escape(pattern, offset + 3)) + + ch == ?\\ and offset + 2 < byte_size(pattern) and :binary.at(pattern, offset + 1) == ?u and + :binary.at(pattern, offset + 2) == ?{ -> + regexp_lone_left_brace_error(pattern, skip_regexp_braced_escape(pattern, offset + 3)) + + ch == ?\\ -> + regexp_lone_left_brace_error(pattern, min(offset + 2, byte_size(pattern))) + + ch == ?{ and offset > 0 and :binary.at(pattern, offset - 1) in [?p, ?P] -> + regexp_lone_left_brace_error(pattern, offset + 1) + + ch == ?{ and + (offset + 1 >= byte_size(pattern) or :binary.at(pattern, offset + 1) not in ?0..?9) -> + "invalid escape sequence in regular expression" + + true -> + regexp_lone_left_brace_error(pattern, offset + 1) + end + end + + defp regexp_invalid_identity_escape?(ch), + do: (ch in ?a..?z or ch in ?A..?Z) and ch not in ~c"bBdDsSfFnNrRtTvVcCwWxXuUpPkK" + + defp ascii_letter?(ch), do: ch in ?a..?z or ch in ?A..?Z + defp hex_digit_byte?(ch), do: ch in ?0..?9 or ch in ?a..?f or ch in ?A..?F + defp hex_digit_value(ch) when ch in ?0..?9, do: ch - ?0 + defp hex_digit_value(ch) when ch in ?a..?f, do: ch - ?a + 10 + defp hex_digit_value(ch) when ch in ?A..?F, do: ch - ?A + 10 + + defp binary_part?(binary, part), do: :binary.match(binary, part) != :nomatch +end diff --git a/lib/quickbeam/js/parser/lexer/regexp/groups.ex b/lib/quickbeam/js/parser/lexer/regexp/groups.ex new file mode 100644 index 000000000..433a5298f --- /dev/null +++ b/lib/quickbeam/js/parser/lexer/regexp/groups.ex @@ -0,0 +1,171 @@ +defmodule QuickBEAM.JS.Parser.Lexer.Regexp.Groups do + @moduledoc "Named capture group and backreference validation." + + def regexp_named_group_error(pattern, flags) do + case collect_regexp_group_names(pattern, 0, []) do + {:error, error} -> + error + + {:ok, []} -> + if binary_part?(flags, "u") or binary_part?(flags, "v") do + regexp_backreference_error(pattern, 0, MapSet.new()) + end + + {:ok, names} -> + regexp_backreference_error(pattern, 0, MapSet.new(names)) + end + end + + defp collect_regexp_group_names(pattern, offset, names) when offset >= byte_size(pattern), + do: {:ok, Enum.reverse(names)} + + defp collect_regexp_group_names(pattern, offset, names) do + case :binary.match(pattern, "(?<", scope: {offset, byte_size(pattern) - offset}) do + :nomatch -> + {:ok, Enum.reverse(names)} + + {index, 3} -> + name_start = index + 3 + + cond do + name_start < byte_size(pattern) and :binary.at(pattern, name_start) in [?=, ?!] -> + collect_regexp_group_names(pattern, name_start + 1, names) + + true -> + case read_regexp_group_name(pattern, name_start) do + {:ok, name, next_offset} -> + cond do + not valid_regexp_group_name?(name) -> {:error, "invalid group name"} + name in names -> {:error, "duplicate group name"} + true -> collect_regexp_group_names(pattern, next_offset, [name | names]) + end + + :error -> + {:error, "invalid group name"} + end + end + end + end + + defp read_regexp_group_name(pattern, index), do: read_regexp_group_name(pattern, index, []) + + defp read_regexp_group_name(pattern, index, _acc) when index >= byte_size(pattern), do: :error + + defp read_regexp_group_name(pattern, index, acc) do + ch = :binary.at(pattern, index) + + cond do + ch == ?> -> {:ok, IO.iodata_to_binary(Enum.reverse(acc)), index + 1} + ch in [?/, ?), ?(, ?|] -> :error + true -> read_regexp_group_name(pattern, index + 1, [ch | acc]) + end + end + + defp valid_regexp_group_name?(""), do: false + + defp valid_regexp_group_name?(name) do + case String.graphemes(name) do + [first | rest] -> + not invalid_regexp_group_name_escape?(name) and regexp_group_name_start?(first) and + Enum.all?(rest, ®exp_group_name_part?/1) + + [] -> + false + end + end + + defp invalid_regexp_group_name_escape?(name) do + Regex.match?(~r/\\(?!u(?:[0-9A-Fa-f]{4}|\{[0-9A-Fa-f]+\}))/, name) or + invalid_regexp_group_surrogate_escape?(name) or + Regex.match?(~r/\\u\{(?:1F[0-9A-Fa-f]+|10FFFF)\}/, name) + end + + defp invalid_regexp_group_surrogate_escape?(name) do + Regex.scan(~r/\\uD[89A-Fa-f][0-9A-Fa-f]{2}/, name, return: :index) + |> Enum.any?(fn [{index, length} | _captures] -> + escape = binary_part(name, index, length) + lead? = Regex.match?(~r/^\\uD[89AB][0-9A-Fa-f]{2}$/i, escape) + trail? = Regex.match?(~r/^\\uD[CDEF][0-9A-Fa-f]{2}$/i, escape) + + next_escape = + binary_part( + name, + min(index + length, byte_size(name)), + byte_size(name) - min(index + length, byte_size(name)) + ) + + previous_offset = max(index - 6, 0) + previous_escape = binary_part(name, previous_offset, index - previous_offset) + + cond do + trail? and not Regex.match?(~r/\\uD[89AB][0-9A-Fa-f]{2}$/i, previous_escape) -> + true + + lead? and not Regex.match?(~r/^\\uD[CDEF][0-9A-Fa-f]{2}/i, next_escape) -> + true + + lead? -> + invalid_regexp_group_surrogate_pair?(escape, next_escape) + + true -> + false + end + end) + end + + defp invalid_regexp_group_surrogate_pair?(lead_escape, next_escape) do + <<"\\u", lead_hex::binary-size(4)>> = lead_escape + <<"\\u", trail_hex::binary-size(4), _rest::binary>> = next_escape + {lead, ""} = Integer.parse(lead_hex, 16) + {trail, ""} = Integer.parse(trail_hex, 16) + codepoint = 0x10000 + (lead - 0xD800) * 0x400 + (trail - 0xDC00) + + codepoint not in 0x10400..0x104AF and codepoint not in 0x1D400..0x1D7FF + end + + defp regexp_group_name_start?(ch) when ch in ["_", "$", "\\"], do: true + + defp regexp_group_name_start?(ch) do + String.match?(ch, ~r/^\p{L}$/u) or regexp_group_name_math_alphanumeric?(ch) + end + + defp regexp_group_name_part?(ch) when ch in ["{", "}"], do: true + + defp regexp_group_name_part?(ch) do + regexp_group_name_start?(ch) or String.match?(ch, ~r/^\p{N}$/u) + end + + defp regexp_group_name_math_alphanumeric?(ch) do + case String.to_charlist(ch) do + [codepoint] -> codepoint in 0x1D400..0x1D7FF + _other -> false + end + end + + defp regexp_backreference_error(pattern, offset, _names) when offset >= byte_size(pattern), + do: nil + + defp regexp_backreference_error(pattern, offset, names) do + case :binary.match(pattern, "\\k", scope: {offset, byte_size(pattern) - offset}) do + :nomatch -> + nil + + {index, 2} -> + if index + 2 >= byte_size(pattern) or :binary.at(pattern, index + 2) != ?< do + "expecting group name" + else + case read_regexp_group_name(pattern, index + 3) do + {:ok, name, next_offset} -> + if MapSet.member?(names, name), + do: regexp_backreference_error(pattern, next_offset, names), + else: "group name not defined" + + :error -> + "expecting group name" + end + end + end + end + + defp binary_part?(binary, part), do: :binary.match(binary, part) != :nomatch +end diff --git a/lib/quickbeam/js/parser/lexer/regexp/properties.ex b/lib/quickbeam/js/parser/lexer/regexp/properties.ex new file mode 100644 index 000000000..91b181984 --- /dev/null +++ b/lib/quickbeam/js/parser/lexer/regexp/properties.ex @@ -0,0 +1,180 @@ +defmodule QuickBEAM.JS.Parser.Lexer.Regexp.Properties do + @moduledoc "Unicode property escape and class range validation." + + @unicode_aliases_by_table (fn -> + table = + Application.app_dir( + :quickbeam, + "priv/c_src/libunicode-table.h" + ) + |> File.read!() + + parse_aliases = fn name -> + pattern = + ~r/static const char #{name}\[\] =\n(.*?);/s + + [body] = Regex.run(pattern, table, capture: :all_but_first) + + ~r/"([^"]*)"\s*"\\0"/ + |> Regex.scan(body, capture: :all_but_first) + |> List.flatten() + |> Enum.flat_map(&String.split(&1, ",")) + |> MapSet.new() + end + + %{ + binary_properties: parse_aliases.("unicode_prop_name_table"), + general_categories: parse_aliases.("unicode_gc_name_table"), + scripts: parse_aliases.("unicode_script_name_table") + } + end).() + + @unicode_binary_properties Map.fetch!(@unicode_aliases_by_table, :binary_properties) + @unicode_general_categories Map.fetch!(@unicode_aliases_by_table, :general_categories) + @unicode_scripts @unicode_aliases_by_table + |> Map.fetch!(:scripts) + |> MapSet.union(MapSet.new(~w[Unknown Zzzz])) + @unicode_string_properties MapSet.new(~w[ + Basic_Emoji Emoji_Keycap_Sequence RGI_Emoji RGI_Emoji_Flag_Sequence + RGI_Emoji_Modifier_Sequence RGI_Emoji_Tag_Sequence RGI_Emoji_ZWJ_Sequence + ]) + + def regexp_class_range_error(pattern, flags) do + if is_binary(flags) and (binary_part?(flags, "u") or binary_part?(flags, "v")) and + (String.match?(pattern, ~r/\[[^\]]*\\[dDsSwWpP](?:\{[^\]]*\})?-/) or + String.match?(pattern, ~r/\[[^\]]*-\\[dDsSwWpP](?:\{[^\]]*\})?/)) do + "invalid class range" + end + end + + def regexp_property_escape_error(pattern, flags) do + if is_binary(flags) and (binary_part?(flags, "u") or binary_part?(flags, "v")) do + regexp_property_escape_error_in_pattern(pattern, false, binary_part?(flags, "v")) + end + end + + defp regexp_property_escape_error_in_pattern(<<>>, _in_class?, _allow_string_properties?), + do: nil + + defp regexp_property_escape_error_in_pattern( + <>, + _in_class?, + _allow_string_properties? + ) + when marker in [?p, ?P], + do: "invalid repetition count" + + defp regexp_property_escape_error_in_pattern( + <>, + in_class?, + allow_string_properties? + ) + when marker in [?p, ?P] do + case rest do + <> -> + validate_regexp_property_escape(property_rest, in_class?, allow_string_properties?) + + _ -> + "expecting '{' after \\p" + end + end + + defp regexp_property_escape_error_in_pattern( + <>, + in_class?, + allow_string_properties? + ), + do: regexp_property_escape_error_in_pattern(rest, in_class?, allow_string_properties?) + + defp regexp_property_escape_error_in_pattern( + <>, + false, + allow_string_properties? + ), + do: regexp_property_escape_error_in_pattern(rest, true, allow_string_properties?) + + defp regexp_property_escape_error_in_pattern( + <>, + true, + allow_string_properties? + ), + do: regexp_property_escape_error_in_pattern(rest, false, allow_string_properties?) + + defp regexp_property_escape_error_in_pattern( + <<_byte, rest::binary>>, + in_class?, + allow_string_properties? + ), + do: regexp_property_escape_error_in_pattern(rest, in_class?, allow_string_properties?) + + defp validate_regexp_property_escape(rest, in_class?, allow_string_properties?) do + case take_regexp_property_escape(rest, []) do + {:ok, property, rest} -> + case regexp_property_error(property, allow_string_properties?) do + nil -> + regexp_property_escape_error_in_pattern(rest, in_class?, allow_string_properties?) + + error -> + error + end + + :error -> + "expecting '}'" + end + end + + defp take_regexp_property_escape(<<>>, _acc), do: :error + + defp take_regexp_property_escape(<>, acc), + do: {:ok, IO.iodata_to_binary(Enum.reverse(acc)), rest} + + defp take_regexp_property_escape(<>, acc), + do: take_regexp_property_escape(rest, [byte | acc]) + + defp regexp_property_error("", _allow_string_properties?), do: "unknown unicode property name" + + defp regexp_property_error(property, allow_string_properties?) do + cond do + allow_string_properties? and MapSet.member?(@unicode_string_properties, property) -> + nil + + true -> + regexp_codepoint_property_error(property) + end + end + + defp regexp_codepoint_property_error(property) do + case String.split(property, "=", parts: 2) do + [name] -> regexp_lone_property_error(name) + [name, value] -> regexp_named_property_error(name, value) + end + end + + defp regexp_lone_property_error(name) do + cond do + MapSet.member?(@unicode_general_categories, name) -> nil + MapSet.member?(@unicode_binary_properties, name) -> nil + true -> "unknown unicode property name" + end + end + + defp regexp_named_property_error(_name, ""), do: "unknown unicode property name" + + defp regexp_named_property_error(name, value) when name in ["Script", "sc"] do + if MapSet.member?(@unicode_scripts, value), do: nil, else: "unknown unicode script" + end + + defp regexp_named_property_error(name, value) when name in ["Script_Extensions", "scx"] do + if MapSet.member?(@unicode_scripts, value), do: nil, else: "unknown unicode script" + end + + defp regexp_named_property_error(name, value) when name in ["General_Category", "gc"] do + if MapSet.member?(@unicode_general_categories, value), + do: nil, + else: "unknown unicode general category" + end + + defp regexp_named_property_error(_name, _value), do: "unknown unicode property name" + + defp binary_part?(binary, part), do: :binary.match(binary, part) != :nomatch +end diff --git a/lib/quickbeam/js/parser/modules.ex b/lib/quickbeam/js/parser/modules.ex new file mode 100644 index 000000000..6d947c42d --- /dev/null +++ b/lib/quickbeam/js/parser/modules.ex @@ -0,0 +1,241 @@ +defmodule QuickBEAM.JS.Parser.Modules do + @moduledoc "Import and export grammar for the experimental JavaScript parser." + + defmacro __using__(_opts) do + quote do + alias QuickBEAM.JS.Parser.AST + alias QuickBEAM.JS.Parser.{Error, Lexer, Token, Validation} + + defp parse_import_declaration(state) do + state = advance(state) + + cond do + current(state).type == :string -> + source = %AST.Literal{value: current(state).value, raw: current(state).raw} + {attributes, state} = parse_import_attributes(advance(state)) + + {%AST.ImportDeclaration{source: source, attributes: attributes}, + consume_semicolon(state)} + + true -> + state = consume_import_phase_modifier(state) + state = consume_import_defer_modifier(state) + {specifiers, state} = parse_import_specifiers(state, []) + state = expect_identifier_value(state, "from") + {source, state} = parse_module_source(state) + {attributes, state} = parse_import_attributes(state) + + {%AST.ImportDeclaration{ + specifiers: specifiers, + source: source, + attributes: attributes + }, consume_semicolon(state)} + end + end + + defp consume_import_phase_modifier(state) do + if current(state).value == "source" and + (peek_value(state) != "from" or peek_value(state, 2) == "from") do + advance(state) + else + state + end + end + + defp consume_import_defer_modifier(state) do + if current(state).value == "defer" and peek_value(state) == "*" do + advance(state) + else + state + end + end + + defp parse_import_attributes(state) do + if match_value?(state, ["assert", "with"]) and peek_value(state) == "{" do + state = advance(state) + parse_object_expression(state) + else + {nil, state} + end + end + + defp parse_import_specifiers(state, acc) do + cond do + current(state).type == :identifier and acc == [] -> + spec = %AST.ImportDefaultSpecifier{local: %AST.Identifier{name: current(state).value}} + state = advance(state) + + if match_value?(state, ",") do + state = advance(state) + + if identifier_like?(current(state)) and current(state).value == "from" do + {Enum.reverse([spec | acc]), + add_error(state, current(state), "expected import specifier")} + else + parse_import_specifiers(state, [spec | acc]) + end + else + {Enum.reverse([spec | acc]), state} + end + + match_value?(state, "*") -> + state = advance(state) + state = expect_identifier_value(state, "as") + {local, state} = parse_binding_identifier(state) + {Enum.reverse([%AST.ImportNamespaceSpecifier{local: local} | acc]), state} + + match_value?(state, "{") -> + {named, state} = parse_named_import_specifiers(advance(state), []) + {Enum.reverse(acc) ++ named, state} + + true -> + {Enum.reverse(acc), state} + end + end + + defp parse_named_import_specifiers(state, acc) do + cond do + match_value?(state, "}") -> + {Enum.reverse(acc), advance(state)} + + true -> + {imported, state} = parse_property_key(state) + + {local, state} = + if identifier_like?(current(state)) and current(state).value == "as" do + parse_binding_identifier(advance(state)) + else + {imported, state} + end + + spec = %AST.ImportSpecifier{imported: imported, local: local} + + cond do + match_value?(state, ",") -> + parse_named_import_specifiers(advance(state), [spec | acc]) + + match_value?(state, "}") -> + {Enum.reverse([spec | acc]), advance(state)} + + true -> + {Enum.reverse([spec | acc]), expect_value(state, "}")} + end + end + end + + defp parse_export_declaration(state) do + state = advance(state) + + cond do + keyword?(state, "default") -> + parse_export_default_declaration(advance(state)) + + match_value?(state, "*") -> + parse_export_all_declaration(advance(state)) + + keyword?(state, "var") or keyword?(state, "let") or keyword?(state, "const") -> + {declaration, state} = parse_variable_declaration(state) + {%AST.ExportNamedDeclaration{declaration: declaration}, state} + + function_start?(state) -> + {declaration, state} = parse_function_declaration(state) + {%AST.ExportNamedDeclaration{declaration: declaration}, state} + + keyword?(state, "class") -> + {declaration, state} = parse_class_declaration(state) + {%AST.ExportNamedDeclaration{declaration: declaration}, state} + + match_value?(state, "{") -> + {specifiers, state} = parse_export_specifiers(advance(state), []) + + {source, state} = + if identifier_like?(current(state)) and current(state).value == "from" do + parse_module_source(advance(state)) + else + {nil, state} + end + + {attributes, state} = + if source, do: parse_import_attributes(state), else: {nil, state} + + {%AST.ExportNamedDeclaration{ + specifiers: specifiers, + source: source, + attributes: attributes + }, consume_semicolon(state)} + + true -> + {%AST.ExportNamedDeclaration{}, + add_error(state, current(state), "expected export declaration")} + end + end + + defp parse_export_all_declaration(state) do + {exported, state} = + if identifier_like?(current(state)) and current(state).value == "as" do + state = advance(state) + parse_property_key(state) + else + {nil, state} + end + + state = expect_identifier_value(state, "from") + {source, state} = parse_module_source(state) + {attributes, state} = parse_import_attributes(state) + + {%AST.ExportAllDeclaration{exported: exported, source: source, attributes: attributes}, + consume_semicolon(state)} + end + + defp parse_export_default_declaration(state) do + cond do + function_start?(state) -> + {declaration, state} = parse_function_declaration(state, false) + {%AST.ExportDefaultDeclaration{declaration: declaration}, state} + + keyword?(state, "class") -> + {declaration, state} = parse_class_declaration(state, false) + {%AST.ExportDefaultDeclaration{declaration: declaration}, state} + + true -> + {declaration, state} = parse_expression(state, 0) + {%AST.ExportDefaultDeclaration{declaration: declaration}, consume_semicolon(state)} + end + end + + defp parse_export_specifiers(state, acc) do + cond do + match_value?(state, "}") -> + {Enum.reverse(acc), advance(state)} + + true -> + {local, state} = parse_property_key(state) + + {exported, state} = + if identifier_like?(current(state)) and current(state).value == "as" do + parse_property_key(advance(state)) + else + {local, state} + end + + spec = %AST.ExportSpecifier{local: local, exported: exported} + + cond do + match_value?(state, ",") -> parse_export_specifiers(advance(state), [spec | acc]) + match_value?(state, "}") -> {Enum.reverse([spec | acc]), advance(state)} + true -> {Enum.reverse([spec | acc]), expect_value(state, "}")} + end + end + end + + defp parse_module_source(state) do + if current(state).type == :string do + {%AST.Literal{value: current(state).value, raw: current(state).raw}, advance(state)} + else + {%AST.Literal{value: "", raw: ""}, + add_error(state, current(state), "expected module source")} + end + end + end + end +end diff --git a/lib/quickbeam/js/parser/patterns.ex b/lib/quickbeam/js/parser/patterns.ex new file mode 100644 index 000000000..f8ee8f047 --- /dev/null +++ b/lib/quickbeam/js/parser/patterns.ex @@ -0,0 +1,188 @@ +defmodule QuickBEAM.JS.Parser.Patterns do + @moduledoc "Binding and destructuring pattern grammar for the experimental JavaScript parser." + + defmacro __using__(_opts) do + quote do + alias QuickBEAM.JS.Parser.AST + alias QuickBEAM.JS.Parser.{Error, Lexer, Token, Validation} + + defp parse_binding_pattern(state) do + cond do + match_value?(state, "[") -> parse_array_pattern(state) + match_value?(state, "{") -> parse_object_pattern(state) + true -> parse_binding_identifier(state) + end + end + + defp parse_binding_identifier(state) do + token = current(state) + + cond do + state.source_type == :module and token.type == :keyword and token.value == "await" -> + {%AST.Identifier{name: ""}, + add_error(state, token, "expected binding identifier") |> recover_expression()} + + token.value == "enum" -> + {%AST.Identifier{name: ""}, + add_error(state, token, "expected binding identifier") |> recover_expression()} + + identifier_like?(token) -> + {%AST.Identifier{name: token.value}, advance(state)} + + true -> + {%AST.Identifier{name: ""}, + add_error(state, token, "expected binding identifier") |> recover_expression()} + end + end + + defp parse_array_pattern(state) do + state = advance(state) + {elements, state} = parse_array_pattern_elements(state, []) + {%AST.ArrayPattern{elements: elements}, state} + end + + defp validate_shorthand_binding_identifier(state, token) do + if identifier_like?(token) do + state + else + add_error(state, token, "expected binding identifier") + end + end + + defp parse_object_pattern(state) do + state = advance(state) + {properties, state} = parse_object_pattern_properties(state, []) + {%AST.ObjectPattern{properties: properties}, state} + end + + defp parse_object_pattern_properties(state, acc) do + cond do + eof?(state) -> + {Enum.reverse(acc), + add_error(state, current(state), "unterminated object binding pattern")} + + match_value?(state, "}") -> + {Enum.reverse(acc), advance(state)} + + match_value?(state, "...") -> + state = advance(state) + {argument, state} = parse_binding_pattern(state) + state = validate_rest_initializer(state) + rest = %AST.RestElement{argument: argument} + + cond do + match_value?(state, ",") -> + state = add_error(state, current(state), "rest element must be last") + parse_object_pattern_properties(advance(state), [rest | acc]) + + match_value?(state, "}") -> + {Enum.reverse([rest | acc]), advance(state)} + + true -> + {Enum.reverse([rest | acc]), expect_value(state, "}")} + end + + true -> + key_token = current(state) + {key, computed?, state} = parse_property_key_with_computed(state) + + {value, state} = + cond do + match_value?(state, ":") -> + state = advance(state) + parse_binding_pattern(state) + + match?(%AST.Identifier{}, key) -> + state = validate_shorthand_binding_identifier(state, key_token) + {key, state} + + true -> + {key, state} + end + + {value, state} = + if match_value?(state, "=") do + state = advance(state) + {right, state} = parse_expression(state, 2) + {%AST.AssignmentPattern{left: value, right: right}, state} + else + {value, state} + end + + property = %AST.Property{ + key: key, + value: value, + shorthand: key == value, + computed: computed? + } + + cond do + match_value?(state, ",") -> + parse_object_pattern_properties(advance(state), [property | acc]) + + match_value?(state, "}") -> + {Enum.reverse([property | acc]), advance(state)} + + true -> + {Enum.reverse([property | acc]), expect_value(state, "}")} + end + end + end + + defp parse_array_pattern_elements(state, acc) do + cond do + eof?(state) -> + {Enum.reverse(acc), + add_error(state, current(state), "unterminated array binding pattern")} + + match_value?(state, "]") -> + {Enum.reverse(acc), advance(state)} + + match_value?(state, ",") -> + parse_array_pattern_elements(advance(state), [nil | acc]) + + match_value?(state, "...") -> + state = advance(state) + {argument, state} = parse_binding_pattern(state) + state = validate_rest_initializer(state) + rest = %AST.RestElement{argument: argument} + + cond do + match_value?(state, ",") -> + state = add_error(state, current(state), "rest element must be last") + parse_array_pattern_elements(advance(state), [rest | acc]) + + match_value?(state, "]") -> + {Enum.reverse([rest | acc]), advance(state)} + + true -> + {Enum.reverse([rest | acc]), expect_value(state, "]")} + end + + true -> + {element, state} = parse_binding_pattern(state) + + {element, state} = + if match_value?(state, "=") do + state = advance(state) + {right, state} = parse_expression(state, 2) + {%AST.AssignmentPattern{left: element, right: right}, state} + else + {element, state} + end + + cond do + match_value?(state, ",") -> + parse_array_pattern_elements(advance(state), [element | acc]) + + match_value?(state, "]") -> + {Enum.reverse([element | acc]), advance(state)} + + true -> + {Enum.reverse([element | acc]), expect_value(state, "]")} + end + end + end + end + end +end diff --git a/lib/quickbeam/js/parser/predicates.ex b/lib/quickbeam/js/parser/predicates.ex new file mode 100644 index 000000000..ee328f4b7 --- /dev/null +++ b/lib/quickbeam/js/parser/predicates.ex @@ -0,0 +1,144 @@ +defmodule QuickBEAM.JS.Parser.Predicates do + @moduledoc "Shared token and grammar predicates for the experimental JavaScript parser." + + defmacro __using__(_opts) do + quote do + alias QuickBEAM.JS.Parser.Token + + defp consume_async_modifier(state) do + if raw_keyword?(current(state), "async") and peek_value(state) == "function" do + {true, advance(state)} + else + {false, state} + end + end + + defp raw_keyword?(%Token{type: :keyword, value: value, raw: value}, value), do: true + defp raw_keyword?(_token, _value), do: false + + defp consume_generator_marker(state) do + if match_value?(state, "*"), do: {true, advance(state)}, else: {false, state} + end + + defp function_start?(state) do + keyword?(state, "function") or + (raw_keyword?(current(state), "async") and peek_value(state) == "function") + end + + defp label_start?(state), do: identifier_like?(current(state)) and peek_value(state) == ":" + + defp accessor_key_start?(state) do + (peek(state).type in [:identifier, :keyword] and peek_value(state, 2) == "(") or + (peek(state).type in [:string, :number, :boolean, :null] and + peek_value(state, 2) == "(") or + (peek_value(state) == "#" and identifier_like?(peek(state, 2)) and + peek_value(state, 3) == "(") or peek_value(state) == "[" + end + + defp async_method_start?(state) do + raw_keyword?(current(state), "async") and not peek(state).before_line_terminator? and + ((identifier_like?(peek(state)) and peek_value(state, 2) == "(") or + (peek(state).type in [:string, :number, :boolean, :null] and + peek_value(state, 2) == "(") or + (peek_value(state) == "#" and identifier_like?(peek(state, 2)) and + peek_value(state, 3) == "(") or + (peek_value(state) == "*" and identifier_like?(peek(state, 2)) and + peek_value(state, 3) == "(") or + (peek_value(state) == "*" and + peek(state, 2).type in [:string, :number, :boolean, :null] and + peek_value(state, 3) == "(") or + (peek_value(state) == "*" and peek_value(state, 2) == "[") or + (peek_value(state) == "*" and peek_value(state, 2) == "#" and + identifier_like?(peek(state, 3)) and peek_value(state, 4) == "(") or + peek_value(state) == "[") + end + + defp async_arrow_start?(state) do + raw_keyword?(current(state), "async") and not peek(state).before_line_terminator? and + ((identifier_like?(peek(state)) and peek_value(state, 2) == "=>") or + (peek_value(state) == "(" and arrow_after_parentheses?(advance(state)))) + end + + defp arrow_after_parentheses?(state) do + case find_matching_paren(state, state.index, 0) do + %Token{value: "=>", before_line_terminator?: false} -> true + _token -> false + end + end + + defp find_matching_paren(%{token_count: token_count}, index, _depth) + when index >= token_count, + do: nil + + defp find_matching_paren(state, index, depth) do + case token_at(state, index) do + %Token{value: "("} -> + find_matching_paren(state, index + 1, depth + 1) + + %Token{value: ")"} when depth == 1 -> + token_at(state, index + 1) + + %Token{value: ")"} -> + find_matching_paren(state, index + 1, depth - 1) + + _ -> + find_matching_paren(state, index + 1, depth) + end + end + + defp consume_keyword_value(state), do: {current(state).value, advance(state)} + + defp keyword?(state, keyword), + do: current(state).type == :keyword and current(state).value == keyword + + defp identifier_like?(%Token{type: :identifier}), do: true + + defp identifier_like?(%Token{type: :keyword, value: value}) do + value in [ + "async", + "get", + "set", + "of", + "await", + "yield", + "let", + "static", + "implements", + "interface", + "package", + "private", + "protected", + "public" + ] + end + + defp identifier_like?(_), do: false + + defp private_identifier_token?(hash, token) do + identifier_like?(token) and token.start == hash.finish and + valid_private_identifier_start?(token.value) + end + + defp valid_private_identifier_start?(<<0xE2, 0x80, first, _rest::binary>>) + when first in [0x8C, 0x8D], + do: false + + defp valid_private_identifier_start?(_value), do: true + + defp match_value?(state, values) when is_list(values) do + token = current(state) + token.type in [:punctuator, :keyword, :identifier] and token.value in values + end + + defp match_value?(state, value) do + token = current(state) + token.type in [:punctuator, :keyword, :identifier] and token.value == value + end + + defp operator_value(%Token{type: :keyword, value: value}) + when value in ["in", "instanceof", "typeof", "void", "delete"], do: value + + defp operator_value(%Token{value: value}), do: value + end + end +end diff --git a/lib/quickbeam/js/parser/state.ex b/lib/quickbeam/js/parser/state.ex new file mode 100644 index 000000000..eaa6821bf --- /dev/null +++ b/lib/quickbeam/js/parser/state.ex @@ -0,0 +1,98 @@ +defmodule QuickBEAM.JS.Parser.State do + @moduledoc "Shared parser-state and token cursor helpers." + + defmacro __using__(_opts) do + quote do + alias QuickBEAM.JS.Parser.AST + alias QuickBEAM.JS.Parser.{Error, Lexer, Token, Validation} + + defp new_state(tokens, opts \\ []) do + token_tuple = List.to_tuple(tokens) + token_count = tuple_size(token_tuple) + + %__MODULE__{ + tokens: token_tuple, + token_count: token_count, + last_token: if(token_count > 0, do: elem(token_tuple, token_count - 1)), + source_type: Keyword.get(opts, :source_type, :script), + errors: Keyword.get(opts, :errors, []) + } + end + + defp consume_semicolon(state) do + cond do + match_value?(state, ";") -> advance(state) + eof?(state) -> state + current(state).before_line_terminator? -> state + match_value?(state, "}") -> state + true -> add_error(state, current(state), "expected ;") + end + end + + defp consume_optional_semicolon(state) do + if match_value?(state, ";"), do: advance(state), else: state + end + + defp statement_end?(state), do: match_value?(state, [";", "}"]) + + defp expect_value(state, value) do + if match_value?(state, value), + do: advance(state), + else: add_error(state, current(state), "expected #{value}") + end + + defp expect_keyword(state, keyword) do + if keyword?(state, keyword), + do: advance(state), + else: add_error(state, current(state), "expected #{keyword}") + end + + defp expect_identifier_value(state, value) do + if identifier_like?(current(state)) and current(state).value == value, + do: advance(state), + else: add_error(state, current(state), "expected #{value}") + end + + defp recover_expression(state) do + if eof?(state) or statement_end?(state) or match_value?(state, ",") do + state + else + state |> advance() |> recover_expression() + end + end + + defp current(%__MODULE__{} = state), do: token_at(state, state.index) + + defp peek(%__MODULE__{} = state, offset \\ 1), do: token_at(state, state.index + offset) + + defp token_at(%{token_count: token_count, last_token: last_token}, index) + when index >= token_count, + do: last_token + + defp token_at(%{tokens: tokens}, index), do: elem(tokens, index) + + defp peek_value(state, offset \\ 1) do + case peek(state, offset) do + nil -> nil + token -> token.value + end + end + + defp advance(%__MODULE__{} = state), + do: %{state | index: min(state.index + 1, state.token_count - 1)} + + defp eof?(state), do: current(state).type == :eof + + defp add_error(state, %Token{} = token, message) do + error = %Error{ + message: message, + line: token.line, + column: token.column, + offset: token.start + } + + %{state | errors: [error | state.errors]} + end + end + end +end diff --git a/lib/quickbeam/js/parser/statements.ex b/lib/quickbeam/js/parser/statements.ex new file mode 100644 index 000000000..676546662 --- /dev/null +++ b/lib/quickbeam/js/parser/statements.ex @@ -0,0 +1,927 @@ +defmodule QuickBEAM.JS.Parser.Statements do + @moduledoc "Statement and declaration grammar for the experimental JavaScript parser." + + defmacro __using__(_opts) do + quote do + alias QuickBEAM.JS.Parser.AST + alias QuickBEAM.JS.Parser.{Error, Lexer, Token, Validation} + + defp parse_program(state) do + {body, state} = parse_statement_list(state, []) + + state = + state + |> Validation.validate_module_declarations(body) + |> Validation.validate_nested_module_declarations(body) + |> Validation.validate_yield_context(body) + |> Validation.validate_await_context(body) + |> Validation.validate_new_target_context(body) + |> Validation.validate_import_meta_context(body) + |> Validation.validate_super_context(body) + |> Validation.validate_class_super_calls(body) + |> Validation.validate_class_field_arguments(body) + |> Validation.validate_duplicate_private_names(body) + |> Validation.validate_declared_private_names(body) + |> Validation.validate_private_delete(body) + |> Validation.validate_private_super_access(body) + |> Validation.validate_private_in_expressions(body) + |> Validation.validate_duplicate_proto_initializers(body) + |> Validation.validate_object_initializers(body) + |> Validation.validate_duplicate_lexical_bindings(body) + |> Validation.validate_restricted_global_lexical_bindings(body) + |> Validation.validate_strict_program_bindings(body) + |> Validation.validate_control_flow(body) + + {%AST.Program{source_type: state.source_type, body: body}, state} + end + + defp parse_statement_list(state, acc) do + cond do + eof?(state) -> + {Enum.reverse(acc), state} + + match_value?(state, "}") -> + {Enum.reverse(acc), state} + + true -> + {statement, state} = parse_statement(state) + parse_statement_list(state, [statement | acc]) + end + end + + defp parse_statement(state) do + case current(state) do + %Token{value: ";"} -> + {%AST.EmptyStatement{}, advance(state)} + + %Token{value: "{"} -> + parse_block_statement(state) + + %Token{type: :keyword, value: "import"} -> + if peek_value(state) in ["(", "."] do + parse_expression_statement(state) + else + parse_import_declaration(state) + end + + %Token{type: :keyword, value: "export"} -> + parse_export_declaration(state) + + %Token{type: :keyword, value: "let"} = token when state.source_type == :script -> + if token.raw != "let" or peek_value(state) == "=" or + (peek(state).before_line_terminator? and + peek_value(state) not in let_line_terminator_binding_starters(state)) do + parse_expression_statement(state) + else + parse_variable_declaration(state) + end + + %Token{type: :keyword, value: value} when value in ["var", "let", "const"] -> + parse_variable_declaration(state) + + %Token{type: :identifier, value: "using"} -> + parse_using_declaration(state, false) + + %Token{type: :keyword, value: "await"} -> + cond do + using_after_await?(state) -> parse_using_declaration(state, true) + label_start?(state) -> parse_labeled_statement(state) + true -> parse_expression_statement(state) + end + + %Token{type: :keyword, value: "return"} -> + parse_return_statement(state) + + %Token{type: :keyword, value: "throw"} -> + parse_throw_statement(state) + + %Token{type: :keyword, value: "debugger"} -> + {%AST.DebuggerStatement{}, state |> advance() |> consume_semicolon()} + + %Token{type: :keyword, value: "break"} -> + parse_break_statement(state) + + %Token{type: :keyword, value: "continue"} -> + parse_continue_statement(state) + + %Token{type: :keyword, value: "if"} -> + parse_if_statement(state) + + %Token{type: :keyword, value: "while"} -> + parse_while_statement(state) + + %Token{type: :keyword, value: "for"} -> + parse_for_statement(state, false) + + %Token{type: :keyword, value: "do"} -> + parse_do_while_statement(state) + + %Token{type: :keyword, value: "with"} -> + parse_with_statement(state) + + %Token{type: :keyword, value: "switch"} -> + parse_switch_statement(state) + + %Token{type: :keyword, value: "try"} -> + parse_try_statement(state) + + %Token{type: :keyword, value: "function"} -> + parse_function_declaration(state) + + %Token{type: :keyword, value: "async"} -> + cond do + peek_value(state) == "function" -> parse_function_declaration(state) + label_start?(state) -> parse_labeled_statement(state) + true -> parse_expression_statement(state) + end + + %Token{type: :keyword, value: "class"} -> + parse_class_declaration(state) + + _token -> + if label_start?(state), + do: parse_labeled_statement(state), + else: parse_expression_statement(state) + end + end + + defp parse_block_statement(state) do + previous_block_depth = state.block_depth + state = advance(%{state | block_depth: previous_block_depth + 1}) + {body, state} = parse_statement_list(state, []) + state = Validation.validate_duplicate_block_bindings(state, body) + state = expect_value(state, "}") + {%AST.BlockStatement{body: body}, %{state | block_depth: previous_block_depth}} + end + + defp let_line_terminator_binding_starters(%{await_allowed?: true}), + do: ["[", "let", "yield", "await"] + + defp let_line_terminator_binding_starters(_state), do: ["[", "let", "yield"] + + defp parse_variable_declaration(state) do + {kind, state} = consume_keyword_value(state) + {declarations, state} = parse_declarators(state, []) + state = validate_const_initializers(state, kind, declarations) + state = validate_lexical_let_bindings(state, kind, declarations) + state = consume_semicolon(state) + {%AST.VariableDeclaration{kind: String.to_atom(kind), declarations: declarations}, state} + end + + defp validate_const_initializers(state, "const", declarations) do + if Enum.any?(declarations, &is_nil(&1.init)), + do: add_error(state, current(state), "missing initializer in const declaration"), + else: state + end + + defp validate_const_initializers(state, _kind, _declarations), do: state + + defp validate_lexical_let_bindings(state, kind, declarations) + when kind in ["let", "const"] do + if Enum.any?(declarations, &binding_contains_name?(&1.id, "let")) do + add_error(state, current(state), "lexical declaration cannot bind let") + else + state + end + end + + defp validate_lexical_let_bindings(state, _kind, _declarations), do: state + + defp binding_contains_name?(%AST.Identifier{name: name}, name), do: true + + defp binding_contains_name?(%AST.ArrayPattern{elements: elements}, name), + do: Enum.any?(elements, &binding_contains_name?(&1, name)) + + defp binding_contains_name?(%AST.ObjectPattern{properties: properties}, name), + do: Enum.any?(properties, &binding_contains_name?(&1, name)) + + defp binding_contains_name?(%AST.Property{value: value}, name), + do: binding_contains_name?(value, name) + + defp binding_contains_name?(%AST.RestElement{argument: argument}, name), + do: binding_contains_name?(argument, name) + + defp binding_contains_name?(_binding, _name), do: false + + defp parse_using_declaration(state, await?) do + state = if await?, do: advance(state), else: state + state = expect_identifier_value(state, "using") + {declarations, state} = parse_declarators(state, []) + state = validate_using_initializers(state, declarations) + state = consume_semicolon(state) + kind = if await?, do: :await_using, else: :using + {%AST.VariableDeclaration{kind: kind, declarations: declarations}, state} + end + + defp validate_using_initializers(state, declarations) do + if Enum.any?(declarations, &is_nil(&1.init)), + do: add_error(state, current(state), "missing initializer in using declaration"), + else: state + end + + defp using_after_await?(state) do + peek(state).type == :identifier and peek(state).value == "using" and + peek_value(state, 2) != "[" and not peek(state).before_line_terminator? and + not peek(state, 2).before_line_terminator? + end + + defp for_let_declaration_start?(state) do + peek_value(state) in ["[", "{"] or identifier_like?(peek(state)) + end + + defp parse_declarators(state, acc, allow_in? \\ true) do + {id, state} = parse_binding_pattern(state) + + {init, state} = + if match_value?(state, "=") do + state = advance(state) + + if allow_in?, + do: parse_expression(state, 2), + else: parse_expression_no_in(state, 2) + else + {nil, state} + end + + declarator = %AST.VariableDeclarator{id: id, init: init} + + if match_value?(state, ",") do + parse_declarators(advance(state), [declarator | acc], allow_in?) + else + {Enum.reverse([declarator | acc]), state} + end + end + + defp parse_return_statement(state) do + state = advance(state) + + if eof?(state) or current(state).before_line_terminator? or statement_end?(state) do + {%AST.ReturnStatement{}, consume_semicolon(state)} + else + {argument, state} = parse_expression(state, 0) + {%AST.ReturnStatement{argument: argument}, consume_semicolon(state)} + end + end + + defp parse_throw_statement(state) do + state = advance(state) + + cond do + eof?(state) or statement_end?(state) -> + {%AST.ThrowStatement{}, + add_error(state, current(state), "expected expression after throw")} + + current(state).before_line_terminator? -> + {%AST.ThrowStatement{}, + add_error(state, current(state), "line terminator after throw")} + + true -> + {argument, state} = parse_expression(state, 0) + {%AST.ThrowStatement{argument: argument}, consume_semicolon(state)} + end + end + + defp parse_break_statement(state) do + state = advance(state) + + {label, state} = + if not eof?(state) and not current(state).before_line_terminator? and + identifier_like?(current(state)) do + parse_binding_identifier(state) + else + {nil, state} + end + + {%AST.BreakStatement{label: label}, consume_semicolon(state)} + end + + defp parse_continue_statement(state) do + state = advance(state) + + {label, state} = + if not eof?(state) and not current(state).before_line_terminator? and + identifier_like?(current(state)) do + parse_binding_identifier(state) + else + {nil, state} + end + + {%AST.ContinueStatement{label: label}, consume_semicolon(state)} + end + + defp parse_if_statement(state) do + state = advance(state) + {test, state} = parse_parenthesized_expression(state) + {consequent, state} = parse_statement(state) + state = validate_if_single_statement_body(state, consequent) + + {alternate, state} = + if keyword?(state, "else") do + {alternate, state} = parse_statement(advance(state)) + {alternate, validate_if_single_statement_body(state, alternate)} + else + {nil, state} + end + + {%AST.IfStatement{test: test, consequent: consequent, alternate: alternate}, state} + end + + defp parse_while_statement(state) do + state = advance(state) + {test, state} = parse_parenthesized_expression(state) + {body, state} = parse_statement(state) + state = validate_single_statement_body(state, body) + {%AST.WhileStatement{test: test, body: body}, state} + end + + defp parse_for_statement(state, await?) do + state = advance(state) + + {await?, state} = + if keyword?(state, "await") do + {true, advance(state)} + else + {await?, state} + end + + state = expect_value(state, "(") + + cond do + match_value?(state, ";") -> + parse_classic_for_tail(state, nil) + + keyword?(state, "await") and using_after_await?(state) -> + state = advance(state) + state = expect_identifier_value(state, "using") + {declarations, state} = parse_declarators(state, [], false) + init = %AST.VariableDeclaration{kind: :await_using, declarations: declarations} + parse_for_after_init(state, init, true) + + keyword?(state, "let") and state.source_type == :script and + not for_let_declaration_start?(state) -> + {init, state} = parse_expression_no_in(state, 0) + parse_for_after_init(state, init, await?) + + keyword?(state, "var") or keyword?(state, "let") or keyword?(state, "const") -> + {kind, state} = consume_keyword_value(state) + {declarations, state} = parse_declarators(state, [], false) + state = validate_lexical_let_bindings(state, kind, declarations) + + init = %AST.VariableDeclaration{ + kind: String.to_atom(kind), + declarations: declarations + } + + parse_for_after_init(state, init, await?) + + current(state).type == :identifier and current(state).value == "using" -> + state = advance(state) + {declarations, state} = parse_declarators(state, [], false) + kind = if await?, do: :await_using, else: :using + init = %AST.VariableDeclaration{kind: kind, declarations: declarations} + parse_for_after_init(state, init, await?) + + identifier_like?(current(state)) and peek_value(state) in ["in", "of"] and + peek_value(state, 2) != "=>" -> + state = validate_raw_async_for_of_start(state, await?) + {init, state} = parse_binding_identifier(state) + parse_for_after_init(state, init, await?) + + true -> + {init, state} = parse_expression_no_in(state, 0) + parse_for_after_init(state, init, await?) + end + end + + defp parse_for_after_init(state, init, await?) do + cond do + keyword?(state, "in") -> + state = validate_for_in_initializer(state, init) + state = advance(state) + {right, state} = parse_expression(state, 0) + state = expect_value(state, ")") + {body, state} = parse_statement(state) + state = validate_single_statement_body(state, body) + state = validate_for_head_lexical_bindings(state, init, body) + {%AST.ForInStatement{left: init, right: right, body: body}, state} + + identifier_like?(current(state)) and current(state).value == "of" and + current(state).raw == "of" -> + state = validate_for_of_initializer(state, init) + state = advance(state) + {right, state} = parse_expression(state, 0) + state = validate_for_of_right_expression(state, right) + state = expect_value(state, ")") + {body, state} = parse_statement(state) + state = validate_single_statement_body(state, body) + state = validate_for_head_lexical_bindings(state, init, body) + {%AST.ForOfStatement{left: init, right: right, body: body, await: await?}, state} + + true -> + parse_classic_for_tail(state, init) + end + end + + defp validate_rest_initializer(state) do + if match_value?(state, "=") do + add_error(state, current(state), "rest element cannot have initializer") + else + state + end + end + + defp validate_raw_async_for_of_start(state, false) do + if current(state).raw == "async" and peek(state).raw == "of" do + add_error(state, current(state), "invalid assignment target") + else + state + end + end + + defp validate_raw_async_for_of_start(state, _await?), do: state + + defp validate_for_of_initializer(state, init), + do: validate_for_in_of_initializer(state, init) + + defp validate_for_of_right_expression(state, %AST.SequenceExpression{parenthesized?: false}), + do: add_error(state, current(state), "expected )") + + defp validate_for_of_right_expression(state, _right), do: state + + defp validate_for_in_initializer(state, %AST.AssignmentExpression{}), + do: add_error(state, current(state), "for-in/of declaration cannot have initializer") + + defp validate_for_in_initializer(state, %AST.VariableDeclaration{ + kind: :var, + declarations: declarations + }) do + if Enum.any?(declarations, &for_in_var_pattern_initializer?/1) do + add_error(state, current(state), "for-in/of declaration cannot have initializer") + else + state + end + end + + defp validate_for_in_initializer(state, init), + do: validate_for_in_of_initializer(state, init) + + defp for_in_var_pattern_initializer?(%AST.VariableDeclarator{id: %AST.Identifier{}}), + do: false + + defp for_in_var_pattern_initializer?(%AST.VariableDeclarator{init: nil}), do: false + defp for_in_var_pattern_initializer?(%AST.VariableDeclarator{}), do: true + + defp validate_for_in_of_initializer(state, %AST.VariableDeclaration{ + declarations: declarations + }) do + cond do + length(declarations) > 1 -> + add_error(state, current(state), "expected 'of' or 'in' in for control expression") + + Enum.any?(declarations, & &1.init) -> + add_error(state, current(state), "for-in/of declaration cannot have initializer") + + true -> + state + end + end + + defp validate_for_in_of_initializer(state, %AST.ArrayExpression{} = init), + do: validate_for_in_of_assignment_pattern(state, init) + + defp validate_for_in_of_initializer(state, %AST.ObjectExpression{} = init), + do: validate_for_in_of_assignment_pattern(state, init) + + defp validate_for_in_of_initializer(state, %AST.Identifier{name: name}) + when name in ["this", "super"], + do: add_error(state, current(state), "invalid assignment target") + + defp validate_for_in_of_initializer(state, %AST.SequenceExpression{}), + do: add_error(state, current(state), "invalid assignment target") + + defp validate_for_in_of_initializer(state, _init), do: state + + defp validate_for_in_of_assignment_pattern(state, init) do + if invalid_for_in_of_assignment_pattern?(init) do + add_error(state, current(state), "invalid destructuring target") + else + state + end + end + + defp invalid_for_in_of_assignment_pattern?(%AST.ArrayExpression{elements: elements}), + do: + invalid_for_in_of_rest_position?(elements) or + Enum.any?(elements, &invalid_for_in_of_assignment_pattern?/1) + + defp invalid_for_in_of_assignment_pattern?(%AST.ObjectExpression{properties: properties}), + do: + invalid_for_in_of_rest_position?(properties) or + Enum.any?(properties, &invalid_for_in_of_assignment_pattern?/1) + + defp invalid_for_in_of_assignment_pattern?(%AST.Property{kind: kind}) + when kind in [:get, :set], + do: true + + defp invalid_for_in_of_assignment_pattern?(%AST.Property{method: true}), do: true + + defp invalid_for_in_of_assignment_pattern?(%AST.Property{value: value}), + do: invalid_for_in_of_assignment_pattern?(value) + + defp invalid_for_in_of_assignment_pattern?(%AST.SpreadElement{ + argument: %AST.AssignmentExpression{} + }), + do: true + + defp invalid_for_in_of_assignment_pattern?(%AST.SpreadElement{argument: argument}), + do: invalid_for_in_of_assignment_pattern?(argument) + + defp invalid_for_in_of_assignment_pattern?(%AST.AssignmentExpression{left: left}), + do: invalid_for_in_of_assignment_pattern?(left) + + defp invalid_for_in_of_assignment_pattern?(%AST.SequenceExpression{}), do: true + defp invalid_for_in_of_assignment_pattern?(_target), do: false + + defp invalid_for_in_of_rest_position?(items) do + last_index = length(items) - 1 + + items + |> Enum.with_index() + |> Enum.any?(fn + {%AST.SpreadElement{}, index} -> index != last_index + {_item, _index} -> false + end) + end + + defp validate_for_head_lexical_bindings( + state, + %AST.VariableDeclaration{kind: kind, declarations: declarations}, + body + ) + when kind in [:let, :const] do + head_names = Enum.flat_map(declarations, &binding_names(&1.id)) + body_var_names = var_declared_names(body) + + cond do + length(head_names) != length(Enum.uniq(head_names)) -> + add_error(state, current(state), "duplicate lexical declaration") + + Enum.any?(head_names, &(&1 in body_var_names)) -> + add_error(state, current(state), "lexical declaration conflicts with var declaration") + + true -> + state + end + end + + defp validate_for_head_lexical_bindings(state, _init, _body), do: state + + defp var_declared_names(%AST.VariableDeclaration{kind: :var, declarations: declarations}), + do: Enum.flat_map(declarations, &binding_names(&1.id)) + + defp var_declared_names(%AST.BlockStatement{body: body}), + do: Enum.flat_map(body, &var_declared_names/1) + + defp var_declared_names(_statement), do: [] + + defp binding_names(%AST.Identifier{name: name}), do: [name] + defp binding_names(%AST.AssignmentPattern{left: left}), do: binding_names(left) + defp binding_names(%AST.RestElement{argument: argument}), do: binding_names(argument) + + defp binding_names(%AST.ArrayPattern{elements: elements}), + do: Enum.flat_map(elements, &binding_names/1) + + defp binding_names(%AST.ObjectPattern{properties: properties}), + do: Enum.flat_map(properties, &binding_names/1) + + defp binding_names(%AST.Property{value: value}), do: binding_names(value) + defp binding_names(_binding), do: [] + + defp parse_classic_for_tail(state, init) do + state = expect_value(state, ";") + + {test, state} = + if match_value?(state, ";") do + {nil, state} + else + parse_expression(state, 0) + end + + state = expect_value(state, ";") + + {update, state} = + if match_value?(state, ")") do + {nil, state} + else + parse_expression(state, 0) + end + + state = expect_value(state, ")") + {body, state} = parse_statement(state) + state = validate_single_statement_body(state, body) + state = validate_for_head_lexical_bindings(state, init, body) + {%AST.ForStatement{init: init, test: test, update: update, body: body}, state} + end + + defp parse_do_while_statement(state) do + state = advance(state) + {body, state} = parse_statement(state) + state = validate_single_statement_body(state, body) + state = expect_keyword(state, "while") + {test, state} = parse_parenthesized_expression(state) + {%AST.DoWhileStatement{body: body, test: test}, consume_optional_semicolon(state)} + end + + defp validate_if_single_statement_body(state, %AST.FunctionDeclaration{ + async: false, + generator: false + }), + do: state + + defp validate_if_single_statement_body(state, body), + do: validate_single_statement_body(state, body) + + defp validate_single_statement_body(state, %AST.LabeledStatement{} = statement) do + if labeled_function_declaration?(statement) do + add_error( + state, + current(state), + "function declarations can't appear in single-statement context" + ) + else + state + end + end + + defp labeled_function_declaration?(%AST.LabeledStatement{body: %AST.FunctionDeclaration{}}), + do: true + + defp labeled_function_declaration?(%AST.LabeledStatement{body: body}), + do: labeled_function_declaration?(body) + + defp labeled_function_declaration?(_statement), do: false + + defp validate_single_statement_body(state, %AST.FunctionDeclaration{}), + do: + add_error( + state, + current(state), + "function declarations can't appear in single-statement context" + ) + + defp validate_single_statement_body(state, %AST.ClassDeclaration{}), + do: + add_error( + state, + current(state), + "class declarations can't appear in single-statement context" + ) + + defp validate_single_statement_body(state, %AST.VariableDeclaration{kind: kind}) + when kind in [:let, :const] do + add_error( + state, + current(state), + "lexical declarations can't appear in single-statement context" + ) + end + + defp validate_single_statement_body(state, _body), do: state + + defp parse_with_statement(state) do + state = advance(state) + {object, state} = parse_parenthesized_expression(state) + {body, state} = parse_statement(state) + state = validate_single_statement_body(state, body) + {%AST.WithStatement{object: object, body: body}, consume_semicolon(state)} + end + + defp parse_labeled_statement(state) do + {label, state} = parse_binding_identifier(state) + state = expect_value(state, ":") + {body, state} = parse_statement(state) + state = validate_labeled_statement_body(state, body) + {%AST.LabeledStatement{label: label, body: body}, state} + end + + defp validate_labeled_statement_body( + state, + %AST.FunctionDeclaration{async: false, generator: false} + ), + do: state + + defp validate_labeled_statement_body(state, %AST.LabeledStatement{}), do: state + + defp validate_labeled_statement_body(state, body), + do: validate_single_statement_body(state, body) + + defp parse_switch_statement(state) do + state = advance(state) + {discriminant, state} = parse_parenthesized_expression(state) + state = expect_value(state, "{") + {cases, state} = parse_switch_cases(state, [], false) + state = validate_switch_bindings(state, cases) + {%AST.SwitchStatement{discriminant: discriminant, cases: cases}, state} + end + + defp validate_switch_bindings(state, cases) do + statements = Enum.flat_map(cases, & &1.consequent) + lexical_bindings = Enum.flat_map(statements, &switch_lexical_bindings/1) + lexical_names = Enum.map(lexical_bindings, &elem(&1, 0)) + var_names = Enum.flat_map(statements, &switch_var_names/1) + + cond do + invalid_switch_duplicate_lexical_bindings?(lexical_bindings) -> + add_error(state, current(state), "duplicate lexical declaration") + + Enum.any?(var_names, &(&1 in lexical_names)) -> + add_error(state, current(state), "lexical declaration conflicts with var declaration") + + true -> + state + end + end + + defp invalid_switch_duplicate_lexical_bindings?(bindings) do + bindings + |> Enum.group_by(&elem(&1, 0), &elem(&1, 1)) + |> Enum.any?(fn {_name, kinds} -> + length(kinds) > 1 and Enum.any?(kinds, &(&1 != :function)) + end) + end + + defp switch_lexical_bindings(%AST.VariableDeclaration{ + kind: kind, + declarations: declarations + }) + when kind in [:let, :const], + do: Enum.map(Enum.flat_map(declarations, &binding_names(&1.id)), &{&1, :lexical}) + + defp switch_lexical_bindings(%AST.ClassDeclaration{id: %AST.Identifier{name: name}}), + do: [{name, :lexical}] + + defp switch_lexical_bindings(%AST.FunctionDeclaration{ + id: %AST.Identifier{name: name}, + async: false, + generator: false + }), + do: [{name, :function}] + + defp switch_lexical_bindings(%AST.FunctionDeclaration{id: %AST.Identifier{name: name}}), + do: [{name, :lexical}] + + defp switch_lexical_bindings(_statement), do: [] + + defp switch_var_names(%AST.VariableDeclaration{kind: :var, declarations: declarations}), + do: Enum.flat_map(declarations, &binding_names(&1.id)) + + defp switch_var_names(_statement), do: [] + + defp parse_switch_cases(state, acc, default_seen?) do + cond do + eof?(state) -> + {Enum.reverse(acc), add_error(state, current(state), "unterminated switch statement")} + + match_value?(state, "}") -> + {Enum.reverse(acc), advance(state)} + + keyword?(state, "case") -> + state = advance(state) + {test, state} = parse_expression(state, 0) + state = expect_value(state, ":") + {consequent, state} = parse_switch_consequent(state, []) + + parse_switch_cases( + state, + [%AST.SwitchCase{test: test, consequent: consequent} | acc], + default_seen? + ) + + keyword?(state, "default") -> + state = advance(state) + + state = + if default_seen?, + do: add_error(state, current(state), "duplicate default clause"), + else: state + + state = expect_value(state, ":") + {consequent, state} = parse_switch_consequent(state, []) + + parse_switch_cases( + state, + [%AST.SwitchCase{test: nil, consequent: consequent} | acc], + true + ) + + true -> + state = add_error(state, current(state), "invalid switch statement") + {statement, state} = parse_statement(state) + + parse_switch_cases( + state, + [%AST.SwitchCase{test: nil, consequent: [statement]} | acc], + default_seen? + ) + end + end + + defp parse_switch_consequent(state, acc) do + cond do + eof?(state) or match_value?(state, "}") or keyword?(state, "case") or + keyword?(state, "default") -> + {Enum.reverse(acc), state} + + true -> + {statement, state} = parse_statement(state) + parse_switch_consequent(state, [statement | acc]) + end + end + + defp parse_try_statement(state) do + state = advance(state) + {block, state} = parse_block_statement(state) + + {handler, state} = + if keyword?(state, "catch") do + parse_catch_clause(state) + else + {nil, state} + end + + {finalizer, state} = + if keyword?(state, "finally") do + parse_block_statement(advance(state)) + else + {nil, state} + end + + if handler == nil and finalizer == nil do + {%AST.TryStatement{block: block}, + add_error(state, current(state), "expected catch or finally")} + else + {%AST.TryStatement{block: block, handler: handler, finalizer: finalizer}, state} + end + end + + defp parse_catch_clause(state) do + state = advance(state) + + {param, state} = + if match_value?(state, "(") do + state = advance(state) + {param, state} = parse_binding_pattern(state) + {param, expect_value(state, ")")} + else + {nil, state} + end + + {body, state} = parse_block_statement(state) + state = Validation.validate_catch_param_bindings(state, param, body) + {%AST.CatchClause{param: param, body: body}, state} + end + + defp parse_function_declaration(state, require_name? \\ true) do + {async?, state} = consume_async_modifier(state) + state = expect_keyword(state, "function") + {generator?, state} = consume_generator_marker(state) + + {id, state} = + cond do + identifier_like?(current(state)) -> + parse_binding_identifier(state) + + require_name? -> + {%AST.Identifier{name: ""}, + add_error(state, current(state), "expected binding identifier")} + + true -> + {nil, state} + end + + {params, state} = parse_function_formal_parameters(state, generator?, async?) + {body, state} = parse_function_body(state, generator?, async?) + + state = + state + |> Validation.validate_super_params(params) + |> Validation.validate_async_function_name(async?, id) + |> Validation.validate_async_generator_function_name(async? and generator?, id) + |> Validation.validate_async_params(async?, params) + |> Validation.validate_async_body_bindings(async?, body) + |> Validation.validate_generator_params(generator?, params) + |> Validation.validate_generator_body_bindings(generator?, body) + |> Validation.validate_strict_function_name(id, body) + |> Validation.validate_strict_function_params(params, body) + + {%AST.FunctionDeclaration{ + id: id, + params: params, + body: body, + async: async?, + generator: generator? + }, state} + end + end + end +end diff --git a/lib/quickbeam/js/parser/token.ex b/lib/quickbeam/js/parser/token.ex new file mode 100644 index 000000000..e38543a3c --- /dev/null +++ b/lib/quickbeam/js/parser/token.ex @@ -0,0 +1,38 @@ +defmodule QuickBEAM.JS.Parser.Token do + @moduledoc "Token emitted by the JavaScript lexer." + + @enforce_keys [:type, :value, :raw, :start, :finish, :line, :column] + defstruct [ + :type, + :value, + :raw, + :start, + :finish, + :line, + :column, + before_line_terminator?: false + ] + + @type type :: + :identifier + | :keyword + | :number + | :string + | :regexp + | :template + | :boolean + | :null + | :punctuator + | :eof + + @type t :: %__MODULE__{ + type: type(), + value: term(), + raw: binary(), + start: non_neg_integer(), + finish: non_neg_integer(), + line: pos_integer(), + column: non_neg_integer(), + before_line_terminator?: boolean() + } +end diff --git a/lib/quickbeam/js/parser/validation.ex b/lib/quickbeam/js/parser/validation.ex new file mode 100644 index 000000000..558e9bdd5 --- /dev/null +++ b/lib/quickbeam/js/parser/validation.ex @@ -0,0 +1,55 @@ +defmodule QuickBEAM.JS.Parser.Validation do + @moduledoc "Facade for JavaScript parser validation passes." + + alias QuickBEAM.JS.Parser.Validation + + defdelegate validate_catch_param_bindings(state, param, body), to: Validation.Bindings + defdelegate validate_duplicate_lexical_bindings(state, body), to: Validation.Bindings + defdelegate validate_duplicate_block_bindings(state, body), to: Validation.Bindings + defdelegate validate_restricted_global_lexical_bindings(state, body), to: Validation.Bindings + defdelegate validate_control_flow(state, body), to: Validation.ControlFlow + defdelegate validate_async_body_bindings(state, async?, body), to: Validation.Strict + defdelegate validate_async_function_name(state, async?, id), to: Validation.Strict + + defdelegate validate_async_generator_function_name(state, async_generator?, id), + to: Validation.Strict + + defdelegate validate_async_params(state, async?, params), to: Validation.Strict + defdelegate validate_generator_body_bindings(state, generator?, body), to: Validation.Strict + defdelegate validate_generator_function_name(state, generator?, id), to: Validation.Strict + defdelegate validate_generator_params(state, generator?, params), to: Validation.Strict + defdelegate validate_unique_params(state, params), to: Validation.Strict + defdelegate validate_strict_function_name(state, id, body), to: Validation.Strict + defdelegate validate_strict_program_bindings(state, body), to: Validation.Strict + defdelegate validate_arrow_params(state, params, body), to: Validation.Strict + defdelegate validate_strict_function_params(state, params, body), to: Validation.Strict + defdelegate validate_strict_params(state, params), to: Validation.Strict + defdelegate validate_strict_body_bindings(state, body), to: Validation.Strict + + defdelegate validate_module_declarations(state, body), to: Validation.Modules + defdelegate validate_nested_module_declarations(state, body), to: Validation.Modules + + defdelegate validate_duplicate_proto_initializers(state, body), to: Validation.Proto + + defdelegate validate_yield_context(state, body), to: Validation.Context + defdelegate validate_await_context(state, body), to: Validation.Context + defdelegate validate_new_target_context(state, body), to: Validation.Context + defdelegate validate_import_meta_context(state, body), to: Validation.Context + defdelegate validate_super_context(state, body), to: Validation.Context + defdelegate validate_super_params(state, params), to: Validation.Context + defdelegate validate_class_super_calls(state, body), to: Validation.Context + defdelegate validate_class_field_arguments(state, body), to: Validation.Context + + defdelegate validate_duplicate_private_names(state, body), to: Validation.PrivateNames + defdelegate validate_declared_private_names(state, body), to: Validation.PrivateNames + defdelegate validate_private_delete(state, body), to: Validation.PrivateNames + defdelegate validate_private_super_access(state, body), to: Validation.PrivateNames + defdelegate validate_private_in_expressions(state, body), to: Validation.PrivateNames + + defdelegate validate_duplicate_constructors(state, body), to: Validation.Targets + defdelegate validate_class_element_names(state, body), to: Validation.Targets + defdelegate validate_object_initializers(state, body), to: Validation.Targets + defdelegate validate_optional_chain_base(state, left), to: Validation.Targets + defdelegate validate_assignment_target(state, operator, left), to: Validation.Targets + defdelegate validate_update_target(state, argument), to: Validation.Targets +end diff --git a/lib/quickbeam/js/parser/validation/bindings.ex b/lib/quickbeam/js/parser/validation/bindings.ex new file mode 100644 index 000000000..8788062c1 --- /dev/null +++ b/lib/quickbeam/js/parser/validation/bindings.ex @@ -0,0 +1,157 @@ +defmodule QuickBEAM.JS.Parser.Validation.Bindings do + @moduledoc "Lexical, var, import, and catch binding validation." + + alias QuickBEAM.JS.Parser.AST + import QuickBEAM.JS.Parser.Validation.Helpers, only: [add_error: 3, current: 1] + + def validate_catch_param_bindings(state, nil, _body), do: state + + def validate_catch_param_bindings(state, param, %AST.BlockStatement{body: body}) do + param_names = binding_names(param) + lexical_names = lexical_binding_names(body, false) + function_names = body |> block_function_bindings() |> Enum.map(&elem(&1, 0)) + + cond do + duplicate_names?(param_names) -> + add_error(state, current(state), "duplicate lexical declaration") + + Enum.any?(param_names, &(&1 in lexical_names or &1 in function_names)) -> + add_error(state, current(state), "catch parameter conflicts with lexical declaration") + + true -> + state + end + end + + def validate_duplicate_lexical_bindings(state, body) do + validate_duplicate_bindings(state, body, false) + end + + def validate_restricted_global_lexical_bindings(%{source_type: :script} = state, body) do + lexical_names = lexical_binding_names(body, false) + + if "undefined" in lexical_names do + add_error(state, current(state), "restricted global lexical binding") + else + state + end + end + + def validate_restricted_global_lexical_bindings(state, _body), do: state + + def validate_duplicate_block_bindings(state, body) do + lexical_names = lexical_binding_names(body, false) + function_bindings = block_function_bindings(body) + function_names = Enum.map(function_bindings, &elem(&1, 0)) + var_names = var_binding_names(body, false) + + cond do + duplicate_names?(lexical_names) or Enum.any?(function_names, &(&1 in lexical_names)) or + invalid_duplicate_block_functions?(function_bindings) -> + add_error(state, current(state), "duplicate lexical declaration") + + Enum.any?(lexical_names ++ function_names, &(&1 in var_names)) -> + add_error(state, current(state), "lexical declaration conflicts with var declaration") + + true -> + state + end + end + + defp validate_duplicate_bindings(state, body, block?) do + lexical_names = lexical_binding_names(body, block?) + var_names = var_binding_names(body, not block?) + + cond do + duplicate_names?(lexical_names) -> + add_error(state, current(state), "duplicate lexical declaration") + + Enum.any?(lexical_names, &(&1 in var_names)) -> + add_error(state, current(state), "lexical declaration conflicts with var declaration") + + true -> + state + end + end + + defp duplicate_names?(names), do: length(names) != length(Enum.uniq(names)) + + defp lexical_binding_names(body, block?), + do: Enum.flat_map(body, &lexical_statement_names(&1, block?)) + + defp lexical_statement_names( + %AST.VariableDeclaration{kind: kind, declarations: declarations}, + _block? + ) + when kind in [:let, :const] do + Enum.flat_map(declarations, &binding_names(&1.id)) + end + + defp lexical_statement_names(%AST.ClassDeclaration{id: %AST.Identifier{name: name}}, _block?), + do: [name] + + defp lexical_statement_names(%AST.FunctionDeclaration{}, _block?), do: [] + + defp lexical_statement_names(%AST.ImportDeclaration{specifiers: specifiers}, _block?) do + Enum.flat_map(specifiers, &import_specifier_names/1) + end + + defp lexical_statement_names(_statement, _block?), do: [] + + defp import_specifier_names(%{local: %AST.Identifier{name: name}}), do: [name] + defp import_specifier_names(_specifier), do: [] + + defp block_function_bindings(body), + do: Enum.flat_map(body, &block_function_statement_bindings/1) + + defp block_function_statement_bindings(%AST.FunctionDeclaration{ + id: %AST.Identifier{name: name}, + async: async?, + generator: generator? + }) do + [{name, not async? and not generator?}] + end + + defp block_function_statement_bindings(_statement), do: [] + + defp invalid_duplicate_block_functions?(function_bindings) do + function_bindings + |> Enum.group_by(&elem(&1, 0), &elem(&1, 1)) + |> Enum.any?(fn {_name, plain_function_flags} -> + length(plain_function_flags) > 1 and not Enum.all?(plain_function_flags) + end) + end + + defp var_binding_names(body, include_functions?), + do: Enum.flat_map(body, &var_statement_names(&1, include_functions?)) + + defp var_statement_names( + %AST.VariableDeclaration{kind: :var, declarations: declarations}, + _include_functions? + ) do + Enum.flat_map(declarations, &binding_names(&1.id)) + end + + defp var_statement_names(%AST.FunctionDeclaration{id: %AST.Identifier{name: name}}, true), + do: [name] + + defp var_statement_names(%AST.FunctionDeclaration{}, false), do: [] + + defp var_statement_names(%AST.BlockStatement{body: body}, _include_functions?), + do: var_binding_names(body, false) + + defp var_statement_names(_statement, _include_functions?), do: [] + defp binding_names(%AST.Identifier{name: name}), do: [name] + defp binding_names(%AST.AssignmentPattern{left: left}), do: binding_names(left) + defp binding_names(%AST.RestElement{argument: argument}), do: binding_names(argument) + + defp binding_names(%AST.ArrayPattern{elements: elements}), + do: Enum.flat_map(elements, &binding_names/1) + + defp binding_names(%AST.ObjectPattern{properties: properties}), + do: Enum.flat_map(properties, &binding_names/1) + + defp binding_names(%AST.Property{value: value}), do: binding_names(value) + defp binding_names(nil), do: [] + defp binding_names(_param), do: [] +end diff --git a/lib/quickbeam/js/parser/validation/context.ex b/lib/quickbeam/js/parser/validation/context.ex new file mode 100644 index 000000000..c809e4f30 --- /dev/null +++ b/lib/quickbeam/js/parser/validation/context.ex @@ -0,0 +1,815 @@ +defmodule QuickBEAM.JS.Parser.Validation.Context do + @moduledoc "Context-sensitive expression validation." + + alias QuickBEAM.JS.Parser.AST + import QuickBEAM.JS.Parser.Validation.Helpers, only: [add_error: 3, current: 1] + + def validate_yield_context(state, body) do + if Enum.any?(body, &invalid_yield_statement?/1) do + add_error(state, current(state), "yield expression not within generator") + else + state + end + end + + defp invalid_yield_statement?(%AST.ExpressionStatement{expression: expression}), + do: invalid_yield_expression?(expression) + + defp invalid_yield_statement?(%AST.ReturnStatement{argument: argument}), + do: invalid_yield_expression?(argument) + + defp invalid_yield_statement?(%AST.ThrowStatement{argument: argument}), + do: invalid_yield_expression?(argument) + + defp invalid_yield_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &invalid_yield_expression?(&1.init)) + end + + defp invalid_yield_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &invalid_yield_statement?/1) + + defp invalid_yield_statement?(%AST.FunctionDeclaration{generator: true}), do: false + + defp invalid_yield_statement?(%AST.FunctionDeclaration{body: body}), + do: invalid_yield_statement?(body) + + defp invalid_yield_statement?(%AST.IfStatement{ + test: test, + consequent: consequent, + alternate: alternate + }) do + invalid_yield_expression?(test) or invalid_yield_statement?(consequent) or + invalid_yield_statement?(alternate) + end + + defp invalid_yield_statement?(%AST.WhileStatement{test: test, body: body}) do + invalid_yield_expression?(test) or invalid_yield_statement?(body) + end + + defp invalid_yield_statement?(%AST.DoWhileStatement{body: body, test: test}) do + invalid_yield_statement?(body) or invalid_yield_expression?(test) + end + + defp invalid_yield_statement?(%AST.ForStatement{ + init: init, + test: test, + update: update, + body: body + }) do + invalid_yield_expression?(init) or invalid_yield_expression?(test) or + invalid_yield_expression?(update) or + invalid_yield_statement?(body) + end + + defp invalid_yield_statement?(%AST.ForInStatement{left: left, right: right, body: body}) do + invalid_yield_expression?(left) or invalid_yield_expression?(right) or + invalid_yield_statement?(body) + end + + defp invalid_yield_statement?(%AST.ForOfStatement{left: left, right: right, body: body}) do + invalid_yield_expression?(left) or invalid_yield_expression?(right) or + invalid_yield_statement?(body) + end + + defp invalid_yield_statement?(%AST.SwitchStatement{discriminant: discriminant, cases: cases}) do + invalid_yield_expression?(discriminant) or + Enum.any?(cases, fn switch_case -> + invalid_yield_expression?(switch_case.test) or + Enum.any?(switch_case.consequent, &invalid_yield_statement?/1) + end) + end + + defp invalid_yield_statement?(%AST.TryStatement{ + block: block, + handler: handler, + finalizer: finalizer + }) do + invalid_yield_statement?(block) or invalid_yield_statement?(handler) or + invalid_yield_statement?(finalizer) + end + + defp invalid_yield_statement?(%AST.CatchClause{body: body}), do: invalid_yield_statement?(body) + + defp invalid_yield_statement?(%AST.LabeledStatement{body: body}), + do: invalid_yield_statement?(body) + + defp invalid_yield_statement?(_statement), do: false + + defp invalid_yield_expression?(nil), do: false + defp invalid_yield_expression?(%AST.YieldExpression{}), do: true + + defp invalid_yield_expression?(%AST.UnaryExpression{argument: argument}), + do: invalid_yield_expression?(argument) + + defp invalid_yield_expression?(%AST.UpdateExpression{argument: argument}), + do: invalid_yield_expression?(argument) + + defp invalid_yield_expression?(%AST.BinaryExpression{left: left, right: right}), + do: invalid_yield_expression?(left) or invalid_yield_expression?(right) + + defp invalid_yield_expression?(%AST.LogicalExpression{left: left, right: right}), + do: invalid_yield_expression?(left) or invalid_yield_expression?(right) + + defp invalid_yield_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: invalid_yield_expression?(left) or invalid_yield_expression?(right) + + defp invalid_yield_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &invalid_yield_expression?/1) + + defp invalid_yield_expression?(%AST.ConditionalExpression{ + test: test, + consequent: consequent, + alternate: alternate + }) do + invalid_yield_expression?(test) or invalid_yield_expression?(consequent) or + invalid_yield_expression?(alternate) + end + + defp invalid_yield_expression?(%AST.CallExpression{callee: callee, arguments: arguments}) do + invalid_yield_expression?(callee) or Enum.any?(arguments, &invalid_yield_expression?/1) + end + + defp invalid_yield_expression?(%AST.MemberExpression{ + object: object, + property: property, + computed: computed? + }) do + invalid_yield_expression?(object) or (computed? and invalid_yield_expression?(property)) + end + + defp invalid_yield_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &invalid_yield_expression?/1) + + defp invalid_yield_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &invalid_yield_expression?/1) + + defp invalid_yield_expression?(%AST.Property{key: key, value: value, computed: computed?}) do + (computed? and invalid_yield_expression?(key)) or invalid_yield_expression?(value) + end + + defp invalid_yield_expression?(%AST.SpreadElement{argument: argument}), + do: invalid_yield_expression?(argument) + + defp invalid_yield_expression?(%AST.FunctionExpression{generator: true}), do: false + + defp invalid_yield_expression?(%AST.FunctionExpression{body: body}), + do: invalid_yield_statement?(body) + + defp invalid_yield_expression?(%AST.ArrowFunctionExpression{body: body}), + do: invalid_yield_statement?(body) or invalid_yield_expression?(body) + + defp invalid_yield_expression?(_expression), do: false + + def validate_await_context(state, body) do + allow_top_level? = state.source_type == :module + + if Enum.any?(body, &invalid_await_statement?(&1, allow_top_level?)) do + add_error(state, current(state), "await expression not within async function or module") + else + state + end + end + + defp invalid_await_statement?(%AST.ExpressionStatement{expression: expression}, allow?), + do: invalid_await_expression?(expression, allow?) + + defp invalid_await_statement?(%AST.ReturnStatement{argument: argument}, allow?), + do: invalid_await_expression?(argument, allow?) + + defp invalid_await_statement?(%AST.ThrowStatement{argument: argument}, allow?), + do: invalid_await_expression?(argument, allow?) + + defp invalid_await_statement?(%AST.VariableDeclaration{declarations: declarations}, allow?) do + Enum.any?(declarations, &invalid_await_expression?(&1.init, allow?)) + end + + defp invalid_await_statement?(%AST.BlockStatement{body: body}, allow?), + do: Enum.any?(body, &invalid_await_statement?(&1, allow?)) + + defp invalid_await_statement?(%AST.FunctionDeclaration{async: true}, _allow?), do: false + + defp invalid_await_statement?(%AST.FunctionDeclaration{body: body}, _allow?), + do: invalid_await_statement?(body, false) + + defp invalid_await_statement?( + %AST.IfStatement{test: test, consequent: consequent, alternate: alternate}, + allow? + ) do + invalid_await_expression?(test, allow?) or invalid_await_statement?(consequent, allow?) or + invalid_await_statement?(alternate, allow?) + end + + defp invalid_await_statement?(%AST.WhileStatement{test: test, body: body}, allow?) do + invalid_await_expression?(test, allow?) or invalid_await_statement?(body, allow?) + end + + defp invalid_await_statement?(%AST.DoWhileStatement{body: body, test: test}, allow?) do + invalid_await_statement?(body, allow?) or invalid_await_expression?(test, allow?) + end + + defp invalid_await_statement?( + %AST.ForStatement{init: init, test: test, update: update, body: body}, + allow? + ) do + invalid_await_expression?(init, allow?) or invalid_await_expression?(test, allow?) or + invalid_await_expression?(update, allow?) or invalid_await_statement?(body, allow?) + end + + defp invalid_await_statement?(%AST.ForInStatement{left: left, right: right, body: body}, allow?) do + invalid_await_expression?(left, allow?) or invalid_await_expression?(right, allow?) or + invalid_await_statement?(body, allow?) + end + + defp invalid_await_statement?(%AST.ForOfStatement{left: left, right: right, body: body}, allow?) do + invalid_await_expression?(left, allow?) or invalid_await_expression?(right, allow?) or + invalid_await_statement?(body, allow?) + end + + defp invalid_await_statement?( + %AST.SwitchStatement{discriminant: discriminant, cases: cases}, + allow? + ) do + invalid_await_expression?(discriminant, allow?) or + Enum.any?(cases, fn switch_case -> + invalid_await_expression?(switch_case.test, allow?) or + Enum.any?(switch_case.consequent, &invalid_await_statement?(&1, allow?)) + end) + end + + defp invalid_await_statement?( + %AST.TryStatement{block: block, handler: handler, finalizer: finalizer}, + allow? + ) do + invalid_await_statement?(block, allow?) or invalid_await_statement?(handler, allow?) or + invalid_await_statement?(finalizer, allow?) + end + + defp invalid_await_statement?(%AST.CatchClause{body: body}, allow?), + do: invalid_await_statement?(body, allow?) + + defp invalid_await_statement?(%AST.LabeledStatement{body: body}, allow?), + do: invalid_await_statement?(body, allow?) + + defp invalid_await_statement?(_statement, _allow?), do: false + + defp invalid_await_expression?(nil, _allow?), do: false + defp invalid_await_expression?(%AST.AwaitExpression{}, true), do: false + defp invalid_await_expression?(%AST.AwaitExpression{}, false), do: true + + defp invalid_await_expression?(%AST.UnaryExpression{argument: argument}, allow?), + do: invalid_await_expression?(argument, allow?) + + defp invalid_await_expression?(%AST.UpdateExpression{argument: argument}, allow?), + do: invalid_await_expression?(argument, allow?) + + defp invalid_await_expression?(%AST.BinaryExpression{left: left, right: right}, allow?), + do: invalid_await_expression?(left, allow?) or invalid_await_expression?(right, allow?) + + defp invalid_await_expression?(%AST.LogicalExpression{left: left, right: right}, allow?), + do: invalid_await_expression?(left, allow?) or invalid_await_expression?(right, allow?) + + defp invalid_await_expression?(%AST.AssignmentExpression{left: left, right: right}, allow?), + do: invalid_await_expression?(left, allow?) or invalid_await_expression?(right, allow?) + + defp invalid_await_expression?(%AST.SequenceExpression{expressions: expressions}, allow?), + do: Enum.any?(expressions, &invalid_await_expression?(&1, allow?)) + + defp invalid_await_expression?( + %AST.ConditionalExpression{test: test, consequent: consequent, alternate: alternate}, + allow? + ) do + invalid_await_expression?(test, allow?) or invalid_await_expression?(consequent, allow?) or + invalid_await_expression?(alternate, allow?) + end + + defp invalid_await_expression?( + %AST.CallExpression{callee: callee, arguments: arguments}, + allow? + ) do + invalid_await_expression?(callee, allow?) or + Enum.any?(arguments, &invalid_await_expression?(&1, allow?)) + end + + defp invalid_await_expression?( + %AST.MemberExpression{object: object, property: property, computed: computed?}, + allow? + ) do + invalid_await_expression?(object, allow?) or + (computed? and invalid_await_expression?(property, allow?)) + end + + defp invalid_await_expression?(%AST.ArrayExpression{elements: elements}, allow?), + do: Enum.any?(elements, &invalid_await_expression?(&1, allow?)) + + defp invalid_await_expression?(%AST.ObjectExpression{properties: properties}, allow?), + do: Enum.any?(properties, &invalid_await_expression?(&1, allow?)) + + defp invalid_await_expression?( + %AST.Property{key: key, value: value, computed: computed?}, + allow? + ) do + (computed? and invalid_await_expression?(key, allow?)) or + invalid_await_expression?(value, allow?) + end + + defp invalid_await_expression?(%AST.SpreadElement{argument: argument}, allow?), + do: invalid_await_expression?(argument, allow?) + + defp invalid_await_expression?(%AST.FunctionExpression{async: true}, _allow?), do: false + + defp invalid_await_expression?(%AST.FunctionExpression{body: body}, _allow?), + do: invalid_await_statement?(body, false) + + defp invalid_await_expression?(%AST.ArrowFunctionExpression{async: true}, _allow?), do: false + + defp invalid_await_expression?(%AST.ArrowFunctionExpression{body: body}, _allow?), + do: invalid_await_statement?(body, false) or invalid_await_expression?(body, false) + + defp invalid_await_expression?(_expression, _allow?), do: false + + def validate_new_target_context(state, body) do + if Enum.any?(body, &invalid_new_target_statement?/1) do + add_error(state, current(state), "new.target not allowed outside function") + else + state + end + end + + defp invalid_new_target_statement?(%AST.ExpressionStatement{expression: expression}), + do: invalid_new_target_expression?(expression) + + defp invalid_new_target_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &invalid_new_target_expression?(&1.init)) + end + + defp invalid_new_target_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &invalid_new_target_statement?/1) + + defp invalid_new_target_statement?(%AST.FunctionDeclaration{}), do: false + defp invalid_new_target_statement?(_statement), do: false + + defp invalid_new_target_expression?(nil), do: false + + defp invalid_new_target_expression?(%AST.MetaProperty{ + meta: %AST.Identifier{name: "new"}, + property: %AST.Identifier{name: "target"} + }), + do: true + + defp invalid_new_target_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: invalid_new_target_expression?(left) or invalid_new_target_expression?(right) + + defp invalid_new_target_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &invalid_new_target_expression?/1) + + defp invalid_new_target_expression?(%AST.CallExpression{callee: callee, arguments: arguments}), + do: + invalid_new_target_expression?(callee) or + Enum.any?(arguments, &invalid_new_target_expression?/1) + + defp invalid_new_target_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &invalid_new_target_expression?/1) + + defp invalid_new_target_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &invalid_new_target_expression?/1) + + defp invalid_new_target_expression?(%AST.Property{value: value}), + do: invalid_new_target_expression?(value) + + defp invalid_new_target_expression?(%AST.ArrowFunctionExpression{ + body: %AST.BlockStatement{} = body + }), + do: invalid_new_target_statement?(body) + + defp invalid_new_target_expression?(%AST.ArrowFunctionExpression{body: body}), + do: invalid_new_target_expression?(body) + + defp invalid_new_target_expression?(_expression), do: false + + def validate_import_meta_context(%{source_type: :module} = state, _body), do: state + + def validate_import_meta_context(state, body) do + if Enum.any?(body, &invalid_import_meta_statement?/1) do + add_error(state, current(state), "import.meta only allowed in modules") + else + state + end + end + + defp invalid_import_meta_statement?(%AST.ExpressionStatement{expression: expression}), + do: invalid_import_meta_expression?(expression) + + defp invalid_import_meta_statement?(%AST.ReturnStatement{argument: argument}), + do: invalid_import_meta_expression?(argument) + + defp invalid_import_meta_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &invalid_import_meta_expression?(&1.init)) + end + + defp invalid_import_meta_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &invalid_import_meta_statement?/1) + + defp invalid_import_meta_statement?(%AST.FunctionDeclaration{body: body}), + do: invalid_import_meta_statement?(body) + + defp invalid_import_meta_statement?(_statement), do: false + + defp invalid_import_meta_expression?(nil), do: false + + defp invalid_import_meta_expression?(%AST.MetaProperty{ + meta: %AST.Identifier{name: "import"}, + property: %AST.Identifier{name: "meta"} + }), + do: true + + defp invalid_import_meta_expression?(%AST.MemberExpression{ + object: object, + property: property, + computed: computed? + }) do + invalid_import_meta_expression?(object) or + (computed? and invalid_import_meta_expression?(property)) + end + + defp invalid_import_meta_expression?(%AST.CallExpression{callee: callee, arguments: arguments}), + do: + invalid_import_meta_expression?(callee) or + Enum.any?(arguments, &invalid_import_meta_expression?/1) + + defp invalid_import_meta_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: invalid_import_meta_expression?(left) or invalid_import_meta_expression?(right) + + defp invalid_import_meta_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &invalid_import_meta_expression?/1) + + defp invalid_import_meta_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &invalid_import_meta_expression?/1) + + defp invalid_import_meta_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &invalid_import_meta_expression?/1) + + defp invalid_import_meta_expression?(%AST.Property{value: value}), + do: invalid_import_meta_expression?(value) + + defp invalid_import_meta_expression?(_expression), do: false + + def validate_super_context(state, body) do + if Enum.any?(body, &invalid_super_statement?/1) do + add_error(state, current(state), "super not allowed outside class method") + else + state + end + end + + def validate_super_params(state, params) do + if Enum.any?(params, &invalid_super_expression?/1) do + add_error(state, current(state), "super not allowed outside class method") + else + state + end + end + + defp invalid_super_statement?(%AST.ExpressionStatement{expression: expression}), + do: invalid_super_expression?(expression) + + defp invalid_super_statement?(%AST.ReturnStatement{argument: argument}), + do: invalid_super_expression?(argument) + + defp invalid_super_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &invalid_super_expression?(&1.init)) + end + + defp invalid_super_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &invalid_super_statement?/1) + + defp invalid_super_statement?(%AST.FunctionDeclaration{body: body}), + do: invalid_super_statement?(body) + + defp invalid_super_statement?(%AST.ClassDeclaration{}), do: false + defp invalid_super_statement?(_statement), do: false + + defp invalid_super_expression?(nil), do: false + defp invalid_super_expression?(%AST.Identifier{name: "super"}), do: true + + defp invalid_super_expression?(%AST.CallExpression{callee: callee, arguments: arguments}), + do: invalid_super_expression?(callee) or Enum.any?(arguments, &invalid_super_expression?/1) + + defp invalid_super_expression?(%AST.MemberExpression{ + object: object, + property: property, + computed: computed? + }) do + invalid_super_expression?(object) or (computed? and invalid_super_expression?(property)) + end + + defp invalid_super_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: invalid_super_expression?(left) or invalid_super_expression?(right) + + defp invalid_super_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &invalid_super_expression?/1) + + defp invalid_super_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &invalid_super_expression?/1) + + defp invalid_super_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &invalid_super_expression?/1) + + defp invalid_super_expression?(%AST.Property{ + method: true, + key: key, + value: value, + computed: computed? + }) do + (computed? and invalid_super_expression?(key)) or has_super_call_statement?(value.body) + end + + defp invalid_super_expression?(%AST.Property{ + kind: kind, + key: key, + value: value, + computed: computed? + }) + when kind in [:get, :set] do + (computed? and invalid_super_expression?(key)) or has_super_call_statement?(value.body) + end + + defp invalid_super_expression?(%AST.Property{key: key, value: value, computed: computed?}) do + (computed? and invalid_super_expression?(key)) or invalid_super_expression?(value) + end + + defp invalid_super_expression?(%AST.AssignmentPattern{left: left, right: right}), + do: invalid_super_expression?(left) or invalid_super_expression?(right) + + defp invalid_super_expression?(%AST.RestElement{argument: argument}), + do: invalid_super_expression?(argument) + + defp invalid_super_expression?(%AST.ArrayPattern{elements: elements}), + do: Enum.any?(elements, &invalid_super_expression?/1) + + defp invalid_super_expression?(%AST.ObjectPattern{properties: properties}), + do: Enum.any?(properties, &invalid_super_expression?/1) + + defp invalid_super_expression?(%AST.FunctionExpression{body: body}), + do: invalid_super_statement?(body) + + defp invalid_super_expression?(%AST.ArrowFunctionExpression{ + body: %AST.BlockStatement{} = body + }), + do: invalid_super_statement?(body) + + defp invalid_super_expression?(%AST.ArrowFunctionExpression{body: body}), + do: invalid_super_expression?(body) + + defp invalid_super_expression?(_expression), do: false + + def validate_class_super_calls(state, body) do + if Enum.any?(body, &invalid_class_super_call_statement?/1) do + add_error(state, current(state), "super call not allowed outside derived constructor") + else + state + end + end + + def validate_class_field_arguments(state, body) do + if Enum.any?(body, &invalid_class_field_arguments_statement?/1) do + add_error(state, current(state), "arguments is not allowed in class field initializer") + else + state + end + end + + defp invalid_class_super_call_statement?(%AST.ClassDeclaration{ + super_class: super_class, + body: body + }) do + Enum.any?(body, &invalid_class_super_call_element?(&1, super_class)) + end + + defp invalid_class_super_call_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &invalid_class_super_call_expression?(&1.init)) + end + + defp invalid_class_super_call_statement?(%AST.ExpressionStatement{expression: expression}), + do: invalid_class_super_call_expression?(expression) + + defp invalid_class_super_call_statement?(_statement), do: false + + defp invalid_class_super_call_expression?(%AST.ClassExpression{ + super_class: super_class, + body: body + }) do + Enum.any?(body, &invalid_class_super_call_element?(&1, super_class)) + end + + defp invalid_class_super_call_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: invalid_class_super_call_expression?(left) or invalid_class_super_call_expression?(right) + + defp invalid_class_super_call_expression?(_expression), do: false + + defp invalid_class_field_arguments_statement?(%AST.ClassDeclaration{body: body}), + do: Enum.any?(body, &invalid_class_field_arguments_element?/1) + + defp invalid_class_field_arguments_statement?(%AST.VariableDeclaration{ + declarations: declarations + }) do + Enum.any?(declarations, &invalid_class_field_arguments_expression?(&1.init)) + end + + defp invalid_class_field_arguments_statement?(%AST.ExpressionStatement{expression: expression}), + do: invalid_class_field_arguments_expression?(expression) + + defp invalid_class_field_arguments_statement?(_statement), do: false + + defp invalid_class_field_arguments_expression?(%AST.ClassExpression{body: body}), + do: Enum.any?(body, &invalid_class_field_arguments_element?/1) + + defp invalid_class_field_arguments_expression?(%AST.AssignmentExpression{ + left: left, + right: right + }), + do: + invalid_class_field_arguments_expression?(left) or + invalid_class_field_arguments_expression?(right) + + defp invalid_class_field_arguments_expression?(_expression), do: false + + defp invalid_class_field_arguments_element?(%AST.FieldDefinition{value: value}), + do: has_arguments_expression?(value) + + defp invalid_class_field_arguments_element?(_element), do: false + + defp invalid_class_super_call_element?( + %AST.MethodDefinition{kind: :constructor, value: value}, + super_class + ) do + is_nil(super_class) and has_super_call_statement?(value.body) + end + + defp invalid_class_super_call_element?(%AST.MethodDefinition{value: value}, _super_class) do + has_super_call_statement?(value.body) + end + + defp invalid_class_super_call_element?(%AST.StaticBlock{body: body}, _super_class) do + Enum.any?(body, &has_super_call_statement?/1) + end + + defp invalid_class_super_call_element?(%AST.FieldDefinition{value: value}, _super_class) do + has_super_call_expression?(value) + end + + defp invalid_class_super_call_element?(_element, _super_class), do: false + + defp has_super_call_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &has_super_call_statement?/1) + + defp has_super_call_statement?(%AST.ExpressionStatement{expression: expression}), + do: has_super_call_expression?(expression) + + defp has_super_call_statement?(%AST.ReturnStatement{argument: argument}), + do: has_super_call_expression?(argument) + + defp has_super_call_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &has_super_call_expression?(&1.init)) + end + + defp has_super_call_statement?(_statement), do: false + + defp has_super_call_expression?(nil), do: false + + defp has_super_call_expression?(%AST.CallExpression{callee: %AST.Identifier{name: "super"}}), + do: true + + defp has_super_call_expression?(%AST.CallExpression{callee: callee, arguments: arguments}), + do: has_super_call_expression?(callee) or Enum.any?(arguments, &has_super_call_expression?/1) + + defp has_super_call_expression?(%AST.MemberExpression{ + object: object, + property: property, + computed: computed? + }) do + has_super_call_expression?(object) or (computed? and has_super_call_expression?(property)) + end + + defp has_super_call_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: has_super_call_expression?(left) or has_super_call_expression?(right) + + defp has_super_call_expression?(%AST.BinaryExpression{left: left, right: right}), + do: has_super_call_expression?(left) or has_super_call_expression?(right) + + defp has_super_call_expression?(%AST.LogicalExpression{left: left, right: right}), + do: has_super_call_expression?(left) or has_super_call_expression?(right) + + defp has_super_call_expression?(%AST.ConditionalExpression{ + test: test, + consequent: consequent, + alternate: alternate + }) do + has_super_call_expression?(test) or has_super_call_expression?(consequent) or + has_super_call_expression?(alternate) + end + + defp has_super_call_expression?(%AST.UnaryExpression{argument: argument}), + do: has_super_call_expression?(argument) + + defp has_super_call_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &has_super_call_expression?/1) + + defp has_super_call_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &has_super_call_expression?/1) + + defp has_super_call_expression?(%AST.Property{key: key, value: value, computed: computed?}) do + has_super_call_expression?(value) or (computed? and has_super_call_expression?(key)) + end + + defp has_super_call_expression?(%AST.SpreadElement{argument: argument}), + do: has_super_call_expression?(argument) + + defp has_super_call_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &has_super_call_expression?/1) + + defp has_super_call_expression?(%AST.ArrowFunctionExpression{ + body: %AST.BlockStatement{} = body + }), + do: has_super_call_statement?(body) + + defp has_super_call_expression?(%AST.ArrowFunctionExpression{body: body}), + do: has_super_call_expression?(body) + + defp has_super_call_expression?(_expression), do: false + + defp has_arguments_expression?(nil), do: false + defp has_arguments_expression?(%AST.Identifier{name: "arguments"}), do: true + + defp has_arguments_expression?(%AST.ArrowFunctionExpression{ + body: %AST.BlockStatement{} = body + }), + do: has_arguments_statement?(body) + + defp has_arguments_expression?(%AST.ArrowFunctionExpression{body: body}), + do: has_arguments_expression?(body) + + defp has_arguments_expression?(%AST.CallExpression{callee: callee, arguments: arguments}), + do: has_arguments_expression?(callee) or Enum.any?(arguments, &has_arguments_expression?/1) + + defp has_arguments_expression?(%AST.MemberExpression{ + object: object, + property: property, + computed: computed? + }) do + has_arguments_expression?(object) or (computed? and has_arguments_expression?(property)) + end + + defp has_arguments_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: has_arguments_expression?(left) or has_arguments_expression?(right) + + defp has_arguments_expression?(%AST.BinaryExpression{left: left, right: right}), + do: has_arguments_expression?(left) or has_arguments_expression?(right) + + defp has_arguments_expression?(%AST.LogicalExpression{left: left, right: right}), + do: has_arguments_expression?(left) or has_arguments_expression?(right) + + defp has_arguments_expression?(%AST.ConditionalExpression{ + test: test, + consequent: consequent, + alternate: alternate + }) do + has_arguments_expression?(test) or has_arguments_expression?(consequent) or + has_arguments_expression?(alternate) + end + + defp has_arguments_expression?(%AST.UnaryExpression{argument: argument}), + do: has_arguments_expression?(argument) + + defp has_arguments_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &has_arguments_expression?/1) + + defp has_arguments_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &has_arguments_expression?/1) + + defp has_arguments_expression?(%AST.Property{key: key, value: value, computed: computed?}) do + has_arguments_expression?(value) or (computed? and has_arguments_expression?(key)) + end + + defp has_arguments_expression?(%AST.SpreadElement{argument: argument}), + do: has_arguments_expression?(argument) + + defp has_arguments_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &has_arguments_expression?/1) + + defp has_arguments_expression?(_expression), do: false + + defp has_arguments_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &has_arguments_statement?/1) + + defp has_arguments_statement?(%AST.ExpressionStatement{expression: expression}), + do: has_arguments_expression?(expression) + + defp has_arguments_statement?(%AST.ReturnStatement{argument: argument}), + do: has_arguments_expression?(argument) + + defp has_arguments_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &has_arguments_expression?(&1.init)) + end + + defp has_arguments_statement?(_statement), do: false +end diff --git a/lib/quickbeam/js/parser/validation/control_flow.ex b/lib/quickbeam/js/parser/validation/control_flow.ex new file mode 100644 index 000000000..df45addb3 --- /dev/null +++ b/lib/quickbeam/js/parser/validation/control_flow.ex @@ -0,0 +1,205 @@ +defmodule QuickBEAM.JS.Parser.Validation.ControlFlow do + @moduledoc "Control-flow, label, break, continue, and return validation." + + alias QuickBEAM.JS.Parser.AST + import QuickBEAM.JS.Parser.Validation.Helpers, only: [add_error: 3, current: 1] + + def validate_control_flow(state, body) do + {state, _context} = + validate_control_flow_statements(state, body, %{ + loop?: false, + switch?: false, + labels: %{}, + function?: false + }) + + state + end + + def validate_control_flow_statements(state, statements, context) do + Enum.reduce(statements, {state, context}, fn statement, {state, context} -> + {validate_control_flow_statement(state, statement, context), context} + end) + end + + def validate_control_flow_statement(state, %AST.ReturnStatement{}, %{function?: function?}) do + if function?, + do: state, + else: add_error(state, current(state), "return statement not within function") + end + + def validate_control_flow_statement( + state, + %AST.ExpressionStatement{expression: expression}, + context + ), + do: validate_control_flow_expression(state, expression, context) + + def validate_control_flow_statement(state, %AST.BreakStatement{label: nil}, %{ + loop?: loop?, + switch?: switch? + }) do + if loop? or switch?, + do: state, + else: add_error(state, current(state), "break statement not within loop or switch") + end + + def validate_control_flow_statement( + state, + %AST.BreakStatement{label: %AST.Identifier{name: name}}, + %{labels: labels} + ) do + if Map.has_key?(labels, name), + do: state, + else: add_error(state, current(state), "undefined break label") + end + + def validate_control_flow_statement(state, %AST.ContinueStatement{label: nil}, %{loop?: loop?}) do + if loop?, + do: state, + else: add_error(state, current(state), "continue statement not within loop") + end + + def validate_control_flow_statement( + state, + %AST.ContinueStatement{label: %AST.Identifier{name: name}}, + %{labels: labels} + ) do + if Map.get(labels, name), + do: state, + else: add_error(state, current(state), "undefined or non-iteration continue label") + end + + def validate_control_flow_statement(state, %AST.BlockStatement{body: body}, context) do + {state, _context} = validate_control_flow_statements(state, body, context) + state + end + + def validate_control_flow_statement( + state, + %AST.IfStatement{consequent: consequent, alternate: alternate}, + context + ) do + state + |> validate_control_flow_statement(consequent, context) + |> validate_control_flow_statement(alternate, context) + end + + def validate_control_flow_statement(state, %AST.WhileStatement{body: body}, context), + do: validate_control_flow_statement(state, body, %{context | loop?: true}) + + def validate_control_flow_statement(state, %AST.DoWhileStatement{body: body}, context), + do: validate_control_flow_statement(state, body, %{context | loop?: true}) + + def validate_control_flow_statement(state, %AST.ForStatement{body: body}, context), + do: validate_control_flow_statement(state, body, %{context | loop?: true}) + + def validate_control_flow_statement(state, %AST.ForInStatement{body: body}, context), + do: validate_control_flow_statement(state, body, %{context | loop?: true}) + + def validate_control_flow_statement(state, %AST.ForOfStatement{body: body}, context), + do: validate_control_flow_statement(state, body, %{context | loop?: true}) + + def validate_control_flow_statement(state, %AST.SwitchStatement{cases: cases}, context) do + statements = Enum.flat_map(cases, & &1.consequent) + + {state, _context} = + validate_control_flow_statements(state, statements, %{context | switch?: true}) + + state + end + + def validate_control_flow_statement( + state, + %AST.TryStatement{block: block, handler: handler, finalizer: finalizer}, + context + ) do + state + |> validate_control_flow_statement(block, context) + |> validate_control_flow_statement(handler, context) + |> validate_control_flow_statement(finalizer, context) + end + + def validate_control_flow_statement(state, %AST.CatchClause{body: body}, context), + do: validate_control_flow_statement(state, body, context) + + def validate_control_flow_statement(state, %AST.ClassDeclaration{body: body}, _context) do + Enum.reduce(body, state, fn + %AST.StaticBlock{body: block_body}, state -> + {state, _context} = + validate_control_flow_statements(state, block_body, %{ + loop?: false, + switch?: false, + labels: %{}, + function?: false + }) + + state + + _element, state -> + state + end) + end + + def validate_control_flow_statement( + state, + %AST.LabeledStatement{label: %AST.Identifier{name: name}, body: body}, + context + ) do + state = + if Map.has_key?(context.labels, name) do + add_error(state, current(state), "duplicate label") + else + state + end + + label_context = %{context | labels: Map.put(context.labels, name, iteration_statement?(body))} + validate_control_flow_statement(state, body, label_context) + end + + def validate_control_flow_statement(state, _statement, _context), do: state + + defp validate_control_flow_expression( + state, + %AST.FunctionExpression{body: %AST.BlockStatement{body: body}}, + _context + ) do + {state, _context} = + validate_control_flow_statements(state, body, %{ + loop?: false, + switch?: false, + labels: %{}, + function?: true + }) + + state + end + + defp validate_control_flow_expression( + state, + %AST.CallExpression{callee: callee, arguments: arguments}, + context + ) do + state = validate_control_flow_expression(state, callee, context) + Enum.reduce(arguments, state, &validate_control_flow_expression(&2, &1, context)) + end + + defp validate_control_flow_expression( + state, + %AST.AssignmentExpression{left: left, right: right}, + context + ) do + state + |> validate_control_flow_expression(left, context) + |> validate_control_flow_expression(right, context) + end + + defp validate_control_flow_expression(state, _expression, _context), do: state + + defp iteration_statement?(%AST.WhileStatement{}), do: true + defp iteration_statement?(%AST.DoWhileStatement{}), do: true + defp iteration_statement?(%AST.ForStatement{}), do: true + defp iteration_statement?(%AST.ForInStatement{}), do: true + defp iteration_statement?(%AST.ForOfStatement{}), do: true + defp iteration_statement?(_statement), do: false +end diff --git a/lib/quickbeam/js/parser/validation/helpers.ex b/lib/quickbeam/js/parser/validation/helpers.ex new file mode 100644 index 000000000..7df42dcd7 --- /dev/null +++ b/lib/quickbeam/js/parser/validation/helpers.ex @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Validation.Helpers do + @moduledoc false + + alias QuickBEAM.JS.Parser.{Error, Token} + + def current(state), do: token_at(state, state.index) + + def token_at(%{token_count: token_count, last_token: last_token}, index) + when index >= token_count, + do: last_token + + def token_at(%{tokens: tokens}, index), do: elem(tokens, index) + + def add_error(state, %Token{} = token, message) do + error = %Error{ + message: message, + line: token.line, + column: token.column, + offset: token.start + } + + %{state | errors: [error | state.errors]} + end +end diff --git a/lib/quickbeam/js/parser/validation/modules.ex b/lib/quickbeam/js/parser/validation/modules.ex new file mode 100644 index 000000000..a1d1ccf53 --- /dev/null +++ b/lib/quickbeam/js/parser/validation/modules.ex @@ -0,0 +1,89 @@ +defmodule QuickBEAM.JS.Parser.Validation.Modules do + @moduledoc "Module declaration validation." + + alias QuickBEAM.JS.Parser.AST + import QuickBEAM.JS.Parser.Validation.Helpers, only: [add_error: 3, current: 1] + + def validate_module_declarations(%{source_type: :module} = state, _body), do: state + + def validate_module_declarations(state, body) do + if Enum.any?(body, &module_declaration?/1) do + add_error(state, current(state), "import/export declarations only allowed in modules") + else + state + end + end + + defp module_declaration?(%AST.ImportDeclaration{}), do: true + defp module_declaration?(%AST.ExportNamedDeclaration{}), do: true + defp module_declaration?(%AST.ExportDefaultDeclaration{}), do: true + defp module_declaration?(%AST.ExportAllDeclaration{}), do: true + defp module_declaration?(_statement), do: false + + def validate_nested_module_declarations(state, body) do + if Enum.any?(body, &nested_module_declaration?/1) do + add_error(state, current(state), "import/export declarations only allowed at top level") + else + state + end + end + + defp nested_module_declaration?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &module_or_nested_declaration?/1) + + defp nested_module_declaration?(%AST.FunctionDeclaration{body: body}), + do: module_or_nested_declaration?(body) + + defp nested_module_declaration?(%AST.FunctionExpression{body: body}), + do: module_or_nested_declaration?(body) + + defp nested_module_declaration?(%AST.ArrowFunctionExpression{body: body}), + do: module_or_nested_declaration?(body) + + defp nested_module_declaration?(%AST.IfStatement{consequent: consequent, alternate: alternate}) do + module_or_nested_declaration?(consequent) or module_or_nested_declaration?(alternate) + end + + defp nested_module_declaration?(%AST.WhileStatement{body: body}), + do: module_or_nested_declaration?(body) + + defp nested_module_declaration?(%AST.DoWhileStatement{body: body}), + do: module_or_nested_declaration?(body) + + defp nested_module_declaration?(%AST.ForStatement{body: body}), + do: module_or_nested_declaration?(body) + + defp nested_module_declaration?(%AST.ForInStatement{body: body}), + do: module_or_nested_declaration?(body) + + defp nested_module_declaration?(%AST.ForOfStatement{body: body}), + do: module_or_nested_declaration?(body) + + defp nested_module_declaration?(%AST.LabeledStatement{body: body}), + do: module_or_nested_declaration?(body) + + defp nested_module_declaration?(%AST.SwitchStatement{cases: cases}) do + cases + |> Enum.flat_map(& &1.consequent) + |> Enum.any?(&module_or_nested_declaration?/1) + end + + defp nested_module_declaration?(%AST.TryStatement{ + block: block, + handler: handler, + finalizer: finalizer + }) do + module_or_nested_declaration?(block) or module_or_nested_declaration?(handler) or + module_or_nested_declaration?(finalizer) + end + + defp nested_module_declaration?(%AST.CatchClause{body: body}), + do: module_or_nested_declaration?(body) + + defp nested_module_declaration?(_statement), do: false + + defp module_or_nested_declaration?(nil), do: false + + defp module_or_nested_declaration?(statement), + do: module_declaration?(statement) or nested_module_declaration?(statement) +end diff --git a/lib/quickbeam/js/parser/validation/private_names.ex b/lib/quickbeam/js/parser/validation/private_names.ex new file mode 100644 index 000000000..48de48b6c --- /dev/null +++ b/lib/quickbeam/js/parser/validation/private_names.ex @@ -0,0 +1,496 @@ +defmodule QuickBEAM.JS.Parser.Validation.PrivateNames do + @moduledoc "Class private-name validation." + + alias QuickBEAM.JS.Parser.AST + import QuickBEAM.JS.Parser.Validation.Helpers, only: [add_error: 3, current: 1] + + def validate_duplicate_private_names(state, body) do + if Enum.any?(body, &duplicate_private_names_statement?/1) do + add_error(state, current(state), "duplicate private name") + else + state + end + end + + defp duplicate_private_names_statement?(%AST.ClassDeclaration{body: body}), + do: duplicate_private_names?(body) + + defp duplicate_private_names_statement?(%AST.ExpressionStatement{expression: expression}), + do: duplicate_private_names_expression?(expression) + + defp duplicate_private_names_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &duplicate_private_names_expression?(&1.init)) + end + + defp duplicate_private_names_statement?(_statement), do: false + + defp duplicate_private_names?(elements) do + {_, duplicate?} = + Enum.reduce(elements, {%{}, false}, fn element, {seen, duplicate?} -> + case private_element_signature(element) do + nil -> + {seen, duplicate?} + + {name, kind} -> + kinds = Map.get(seen, name, MapSet.new()) + + {Map.put(seen, name, MapSet.put(kinds, kind)), + duplicate? or duplicate_private_kind?(kinds, kind)} + end + end) + + duplicate? + end + + defp private_element_signature(%AST.FieldDefinition{ + key: %AST.PrivateIdentifier{name: name}, + static: static? + }), + do: {name, {:field, static?}} + + defp private_element_signature(%AST.MethodDefinition{ + key: %AST.PrivateIdentifier{name: name}, + kind: kind, + static: static? + }), + do: {name, {kind, static?}} + + defp private_element_signature(_element), do: nil + + defp duplicate_private_kind?(kinds, {:get, static?}) do + MapSet.member?(kinds, {:get, static?}) or + MapSet.difference(kinds, MapSet.new([{:set, static?}])) != MapSet.new() + end + + defp duplicate_private_kind?(kinds, {:set, static?}) do + MapSet.member?(kinds, {:set, static?}) or + MapSet.difference(kinds, MapSet.new([{:get, static?}])) != MapSet.new() + end + + defp duplicate_private_kind?(kinds, _kind), do: MapSet.size(kinds) > 0 + + defp duplicate_private_names_expression?(%AST.ClassExpression{body: body}), + do: duplicate_private_names?(body) + + defp duplicate_private_names_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: duplicate_private_names_expression?(left) or duplicate_private_names_expression?(right) + + defp duplicate_private_names_expression?(_expression), do: false + + def validate_declared_private_names(state, body) do + if Enum.any?(body, &undeclared_private_names_statement?/1) do + add_error(state, current(state), "undeclared private name") + else + state + end + end + + defp undeclared_private_names_statement?(%AST.ClassDeclaration{ + super_class: super_class, + body: body + }) do + declared = MapSet.new() + + undeclared_private_expression?(super_class, declared) or + undeclared_private_names?(body, declared) + end + + defp undeclared_private_names_statement?(statement), + do: undeclared_private_statement?(statement, MapSet.new()) + + defp declared_private_names(%AST.FieldDefinition{key: %AST.PrivateIdentifier{name: name}}), + do: [name] + + defp declared_private_names(%AST.MethodDefinition{key: %AST.PrivateIdentifier{name: name}}), + do: [name] + + defp declared_private_names(_element), do: [] + + defp undeclared_private_names?(body, inherited_declared) do + declared = + body + |> Enum.flat_map(&declared_private_names/1) + |> MapSet.new() + |> MapSet.union(inherited_declared) + + Enum.any?(body, &uses_undeclared_private_name?(&1, declared)) + end + + defp uses_undeclared_private_name?( + %AST.FieldDefinition{key: key, value: value, computed: true}, + declared + ), + do: + undeclared_private_expression?(key, declared) or + undeclared_private_expression?(value, declared) + + defp uses_undeclared_private_name?(%AST.FieldDefinition{value: value}, declared), + do: undeclared_private_expression?(value, declared) + + defp uses_undeclared_private_name?( + %AST.MethodDefinition{key: key, value: value, computed: true}, + declared + ), + do: + undeclared_private_expression?(key, declared) or + undeclared_private_statement?(value.body, declared) + + defp uses_undeclared_private_name?(%AST.MethodDefinition{value: value}, declared), + do: undeclared_private_statement?(value.body, declared) + + defp uses_undeclared_private_name?(%AST.StaticBlock{body: body}, declared), + do: Enum.any?(body, &undeclared_private_statement?(&1, declared)) + + defp uses_undeclared_private_name?(_element, _declared), do: false + + defp undeclared_private_statement?(%AST.BlockStatement{body: body}, declared), + do: Enum.any?(body, &undeclared_private_statement?(&1, declared)) + + defp undeclared_private_statement?(%AST.ExpressionStatement{expression: expression}, declared), + do: undeclared_private_expression?(expression, declared) + + defp undeclared_private_statement?(%AST.ReturnStatement{argument: argument}, declared), + do: undeclared_private_expression?(argument, declared) + + defp undeclared_private_statement?(%AST.FunctionDeclaration{body: body}, declared), + do: undeclared_private_statement?(body, declared) + + defp undeclared_private_statement?( + %AST.VariableDeclaration{declarations: declarations}, + declared + ) do + Enum.any?(declarations, &undeclared_private_expression?(&1.init, declared)) + end + + defp undeclared_private_statement?(_statement, _declared), do: false + + defp undeclared_private_expression?(nil, _declared), do: false + + defp undeclared_private_expression?(%AST.PrivateIdentifier{name: name}, declared), + do: not MapSet.member?(declared, name) + + defp undeclared_private_expression?( + %AST.ClassExpression{super_class: super_class, body: body}, + declared + ), + do: + undeclared_private_expression?(super_class, declared) or + undeclared_private_names?(body, declared) + + defp undeclared_private_expression?(%AST.FunctionExpression{body: body}, declared), + do: undeclared_private_statement?(body, declared) + + defp undeclared_private_expression?( + %AST.ArrowFunctionExpression{body: %AST.BlockStatement{} = body}, + declared + ), + do: undeclared_private_statement?(body, declared) + + defp undeclared_private_expression?(%AST.ArrowFunctionExpression{body: body}, declared), + do: undeclared_private_expression?(body, declared) + + defp undeclared_private_expression?( + %AST.MemberExpression{object: object, property: property}, + declared + ) do + undeclared_private_expression?(object, declared) or + undeclared_private_expression?(property, declared) + end + + defp undeclared_private_expression?(%AST.BinaryExpression{left: left, right: right}, declared), + do: + undeclared_private_expression?(left, declared) or + undeclared_private_expression?(right, declared) + + defp undeclared_private_expression?( + %AST.CallExpression{callee: callee, arguments: arguments}, + declared + ), + do: + undeclared_private_expression?(callee, declared) or + Enum.any?(arguments, &undeclared_private_expression?(&1, declared)) + + defp undeclared_private_expression?( + %AST.AssignmentExpression{left: left, right: right}, + declared + ), + do: + undeclared_private_expression?(left, declared) or + undeclared_private_expression?(right, declared) + + defp undeclared_private_expression?( + %AST.SequenceExpression{expressions: expressions}, + declared + ), + do: Enum.any?(expressions, &undeclared_private_expression?(&1, declared)) + + defp undeclared_private_expression?(_expression, _declared), do: false + + def validate_private_delete(state, body) do + if Enum.any?(body, &private_delete_statement?/1) do + add_error(state, current(state), "cannot delete a private class field") + else + state + end + end + + defp private_delete_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &private_delete_statement?/1) + + defp private_delete_statement?(%AST.ClassDeclaration{body: body}), + do: Enum.any?(body, &private_delete_class_element?/1) + + defp private_delete_statement?(%AST.ExpressionStatement{expression: expression}), + do: private_delete_expression?(expression) + + defp private_delete_statement?(%AST.ReturnStatement{argument: argument}), + do: private_delete_expression?(argument) + + defp private_delete_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &private_delete_expression?(&1.init)) + end + + defp private_delete_statement?(_statement), do: false + + defp private_delete_class_element?(%AST.FieldDefinition{value: value}), + do: private_delete_expression?(value) + + defp private_delete_class_element?(%AST.MethodDefinition{value: value}), + do: private_delete_statement?(value.body) + + defp private_delete_class_element?(%AST.StaticBlock{body: body}), + do: Enum.any?(body, &private_delete_statement?/1) + + defp private_delete_class_element?(_element), do: false + + defp private_delete_expression?(nil), do: false + + defp private_delete_expression?(%AST.ClassExpression{body: body}), + do: Enum.any?(body, &private_delete_class_element?/1) + + defp private_delete_expression?(%AST.UnaryExpression{operator: "delete", argument: argument}), + do: private_member_reference?(argument) + + defp private_delete_expression?(%AST.UnaryExpression{argument: argument}), + do: private_delete_expression?(argument) + + defp private_delete_expression?(%AST.MemberExpression{object: object, property: property}), + do: private_delete_expression?(object) or private_delete_expression?(property) + + defp private_delete_expression?(%AST.CallExpression{callee: callee, arguments: arguments}), + do: private_delete_expression?(callee) or Enum.any?(arguments, &private_delete_expression?/1) + + defp private_delete_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: private_delete_expression?(left) or private_delete_expression?(right) + + defp private_delete_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &private_delete_expression?/1) + + defp private_delete_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &private_delete_expression?/1) + + defp private_delete_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &private_delete_expression?/1) + + defp private_delete_expression?(%AST.Property{key: key, value: value, computed: computed?}) do + private_delete_expression?(value) or (computed? and private_delete_expression?(key)) + end + + defp private_delete_expression?(%AST.ConditionalExpression{ + test: test, + consequent: consequent, + alternate: alternate + }) do + private_delete_expression?(test) or private_delete_expression?(consequent) or + private_delete_expression?(alternate) + end + + defp private_delete_expression?(%AST.ArrowFunctionExpression{ + body: %AST.BlockStatement{} = body + }), + do: private_delete_statement?(body) + + defp private_delete_expression?(%AST.ArrowFunctionExpression{body: body}), + do: private_delete_expression?(body) + + defp private_delete_expression?(_expression), do: false + + def validate_private_super_access(state, body) do + if Enum.any?(body, &private_super_access_statement?/1) do + add_error(state, current(state), "private class field forbidden after super") + else + state + end + end + + defp private_super_access_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &private_super_access_statement?/1) + + defp private_super_access_statement?(%AST.ClassDeclaration{ + super_class: super_class, + body: body + }), + do: + private_super_access_expression?(super_class) or + Enum.any?(body, &private_super_access_class_element?/1) + + defp private_super_access_statement?(%AST.ExpressionStatement{expression: expression}), + do: private_super_access_expression?(expression) + + defp private_super_access_statement?(%AST.ReturnStatement{argument: argument}), + do: private_super_access_expression?(argument) + + defp private_super_access_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &private_super_access_expression?(&1.init)) + end + + defp private_super_access_statement?(_statement), do: false + + defp private_super_access_class_element?(%AST.FieldDefinition{ + key: key, + value: value, + computed: computed? + }) do + (computed? and private_super_access_expression?(key)) or + private_super_access_expression?(value) + end + + defp private_super_access_class_element?(%AST.MethodDefinition{ + key: key, + value: value, + computed: computed? + }) do + (computed? and private_super_access_expression?(key)) or + private_super_access_statement?(value.body) + end + + defp private_super_access_class_element?(%AST.StaticBlock{body: body}), + do: Enum.any?(body, &private_super_access_statement?/1) + + defp private_super_access_class_element?(_element), do: false + + defp private_super_access_expression?(nil), do: false + + defp private_super_access_expression?(%AST.MemberExpression{ + object: %AST.Identifier{name: "super"}, + property: %AST.PrivateIdentifier{} + }), + do: true + + defp private_super_access_expression?(%AST.ClassExpression{ + super_class: super_class, + body: body + }), + do: + private_super_access_expression?(super_class) or + Enum.any?(body, &private_super_access_class_element?/1) + + defp private_super_access_expression?(%AST.MemberExpression{ + object: object, + property: property + }), + do: private_super_access_expression?(object) or private_super_access_expression?(property) + + defp private_super_access_expression?(%AST.CallExpression{ + callee: callee, + arguments: arguments + }), + do: + private_super_access_expression?(callee) or + Enum.any?(arguments, &private_super_access_expression?/1) + + defp private_super_access_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: private_super_access_expression?(left) or private_super_access_expression?(right) + + defp private_super_access_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &private_super_access_expression?/1) + + defp private_super_access_expression?(_expression), do: false + + defp private_member_reference?(%AST.MemberExpression{property: %AST.PrivateIdentifier{}}), + do: true + + defp private_member_reference?(%AST.CallExpression{callee: callee}), + do: private_member_reference?(callee) + + defp private_member_reference?(_expression), do: false + + def validate_private_in_expressions(state, body) do + if Enum.any?(body, &invalid_private_in_statement?/1) do + add_error(state, current(state), "invalid private in expression") + else + state + end + end + + defp invalid_private_in_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &invalid_private_in_statement?/1) + + defp invalid_private_in_statement?(%AST.ClassDeclaration{body: body}), + do: Enum.any?(body, &invalid_private_in_class_element?/1) + + defp invalid_private_in_statement?(%AST.ExpressionStatement{expression: expression}), + do: invalid_private_in_expression?(expression) + + defp invalid_private_in_statement?(%AST.ReturnStatement{argument: argument}), + do: invalid_private_in_expression?(argument) + + defp invalid_private_in_statement?(%AST.ForInStatement{left: %AST.PrivateIdentifier{}}), + do: true + + defp invalid_private_in_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &invalid_private_in_expression?(&1.init)) + end + + defp invalid_private_in_statement?(_statement), do: false + + defp invalid_private_in_class_element?(%AST.FieldDefinition{value: value}), + do: invalid_private_in_expression?(value) + + defp invalid_private_in_class_element?(%AST.MethodDefinition{value: value}), + do: invalid_private_in_statement?(value.body) + + defp invalid_private_in_class_element?(%AST.StaticBlock{body: body}), + do: Enum.any?(body, &invalid_private_in_statement?/1) + + defp invalid_private_in_class_element?(_element), do: false + + defp invalid_private_in_expression?(%AST.BinaryExpression{ + operator: "in", + left: %AST.PrivateIdentifier{}, + right: %AST.PrivateIdentifier{} + }), + do: true + + defp invalid_private_in_expression?(%AST.BinaryExpression{ + operator: "in", + left: %AST.PrivateIdentifier{}, + right: %AST.BinaryExpression{operator: "in", left: %AST.PrivateIdentifier{}} + }), + do: true + + defp invalid_private_in_expression?(%AST.BinaryExpression{ + operator: "in", + left: %AST.PrivateIdentifier{}, + right: %AST.ArrowFunctionExpression{} + }), + do: true + + defp invalid_private_in_expression?(%AST.BinaryExpression{ + operator: "in", + left: %AST.PrivateIdentifier{}, + right: %AST.Identifier{name: "yield"} + }), + do: true + + defp invalid_private_in_expression?(%AST.BinaryExpression{left: left, right: right}), + do: invalid_private_in_expression?(left) or invalid_private_in_expression?(right) + + defp invalid_private_in_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: invalid_private_in_expression?(left) or invalid_private_in_expression?(right) + + defp invalid_private_in_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &invalid_private_in_expression?/1) + + defp invalid_private_in_expression?(_expression), do: false +end diff --git a/lib/quickbeam/js/parser/validation/proto.ex b/lib/quickbeam/js/parser/validation/proto.ex new file mode 100644 index 000000000..63f477dc1 --- /dev/null +++ b/lib/quickbeam/js/parser/validation/proto.ex @@ -0,0 +1,212 @@ +defmodule QuickBEAM.JS.Parser.Validation.Proto do + @moduledoc "Object initializer __proto__ validation." + + alias QuickBEAM.JS.Parser.AST + import QuickBEAM.JS.Parser.Validation.Helpers, only: [add_error: 3, current: 1] + + def validate_duplicate_proto_initializers(state, body) do + if Enum.any?(body, &duplicate_proto_initializer_statement?/1) do + add_error(state, current(state), "duplicate __proto__ property") + else + state + end + end + + defp duplicate_proto_initializer_statement?(%AST.ExpressionStatement{expression: expression}), + do: duplicate_proto_initializer_expression?(expression) + + defp duplicate_proto_initializer_statement?(%AST.ReturnStatement{argument: argument}), + do: duplicate_proto_initializer_expression?(argument) + + defp duplicate_proto_initializer_statement?(%AST.ThrowStatement{argument: argument}), + do: duplicate_proto_initializer_expression?(argument) + + defp duplicate_proto_initializer_statement?(%AST.VariableDeclaration{ + declarations: declarations + }) do + Enum.any?(declarations, &duplicate_proto_initializer_expression?(&1.init)) + end + + defp duplicate_proto_initializer_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &duplicate_proto_initializer_statement?/1) + + defp duplicate_proto_initializer_statement?(%AST.FunctionDeclaration{}), do: false + + defp duplicate_proto_initializer_statement?(%AST.IfStatement{ + test: test, + consequent: consequent, + alternate: alternate + }) do + duplicate_proto_initializer_expression?(test) or + duplicate_proto_initializer_statement?(consequent) or + duplicate_proto_initializer_statement?(alternate) + end + + defp duplicate_proto_initializer_statement?(%AST.WhileStatement{test: test, body: body}) do + duplicate_proto_initializer_expression?(test) or duplicate_proto_initializer_statement?(body) + end + + defp duplicate_proto_initializer_statement?(%AST.DoWhileStatement{body: body, test: test}) do + duplicate_proto_initializer_statement?(body) or duplicate_proto_initializer_expression?(test) + end + + defp duplicate_proto_initializer_statement?(%AST.ForStatement{ + init: init, + test: test, + update: update, + body: body + }) do + duplicate_proto_initializer_expression?(init) or duplicate_proto_initializer_expression?(test) or + duplicate_proto_initializer_expression?(update) or + duplicate_proto_initializer_statement?(body) + end + + defp duplicate_proto_initializer_statement?(%AST.ForInStatement{ + left: left, + right: right, + body: body + }) do + duplicate_proto_initializer_expression?(left) or + duplicate_proto_initializer_expression?(right) or + duplicate_proto_initializer_statement?(body) + end + + defp duplicate_proto_initializer_statement?(%AST.ForOfStatement{ + left: left, + right: right, + body: body + }) do + duplicate_proto_initializer_expression?(left) or + duplicate_proto_initializer_expression?(right) or + duplicate_proto_initializer_statement?(body) + end + + defp duplicate_proto_initializer_statement?(%AST.SwitchStatement{ + discriminant: discriminant, + cases: cases + }) do + duplicate_proto_initializer_expression?(discriminant) or + Enum.any?(cases, fn switch_case -> + duplicate_proto_initializer_expression?(switch_case.test) or + Enum.any?(switch_case.consequent, &duplicate_proto_initializer_statement?/1) + end) + end + + defp duplicate_proto_initializer_statement?(%AST.TryStatement{ + block: block, + handler: handler, + finalizer: finalizer + }) do + duplicate_proto_initializer_statement?(block) or + duplicate_proto_initializer_statement?(handler) or + duplicate_proto_initializer_statement?(finalizer) + end + + defp duplicate_proto_initializer_statement?(%AST.CatchClause{body: body}), + do: duplicate_proto_initializer_statement?(body) + + defp duplicate_proto_initializer_statement?(%AST.LabeledStatement{body: body}), + do: duplicate_proto_initializer_statement?(body) + + defp duplicate_proto_initializer_statement?(_statement), do: false + + defp duplicate_proto_initializer_expression?(nil), do: false + + defp duplicate_proto_initializer_expression?(%AST.ObjectExpression{properties: properties}) do + Enum.count(properties, &proto_data_property?/1) > 1 or + Enum.any?(properties, &duplicate_proto_initializer_expression?/1) + end + + defp duplicate_proto_initializer_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &duplicate_proto_initializer_expression?/1) + + defp duplicate_proto_initializer_expression?(%AST.Property{ + key: key, + value: value, + computed: computed? + }) do + (computed? and duplicate_proto_initializer_expression?(key)) or + duplicate_proto_initializer_expression?(value) + end + + defp duplicate_proto_initializer_expression?(%AST.SpreadElement{argument: argument}), + do: duplicate_proto_initializer_expression?(argument) + + defp duplicate_proto_initializer_expression?(%AST.UnaryExpression{argument: argument}), + do: duplicate_proto_initializer_expression?(argument) + + defp duplicate_proto_initializer_expression?(%AST.UpdateExpression{argument: argument}), + do: duplicate_proto_initializer_expression?(argument) + + defp duplicate_proto_initializer_expression?(%AST.BinaryExpression{left: left, right: right}), + do: + duplicate_proto_initializer_expression?(left) or + duplicate_proto_initializer_expression?(right) + + defp duplicate_proto_initializer_expression?(%AST.LogicalExpression{left: left, right: right}), + do: + duplicate_proto_initializer_expression?(left) or + duplicate_proto_initializer_expression?(right) + + defp duplicate_proto_initializer_expression?(%AST.AssignmentExpression{ + left: left, + right: right + }), + do: + duplicate_proto_initializer_expression?(left) or + duplicate_proto_initializer_expression?(right) + + defp duplicate_proto_initializer_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &duplicate_proto_initializer_expression?/1) + + defp duplicate_proto_initializer_expression?(%AST.ConditionalExpression{ + test: test, + consequent: consequent, + alternate: alternate + }) do + duplicate_proto_initializer_expression?(test) or + duplicate_proto_initializer_expression?(consequent) or + duplicate_proto_initializer_expression?(alternate) + end + + defp duplicate_proto_initializer_expression?(%AST.CallExpression{ + callee: callee, + arguments: arguments + }) do + duplicate_proto_initializer_expression?(callee) or + Enum.any?(arguments, &duplicate_proto_initializer_expression?/1) + end + + defp duplicate_proto_initializer_expression?(%AST.MemberExpression{ + object: object, + property: property, + computed: computed? + }) do + duplicate_proto_initializer_expression?(object) or + (computed? and duplicate_proto_initializer_expression?(property)) + end + + defp duplicate_proto_initializer_expression?(%AST.FunctionExpression{}), do: false + defp duplicate_proto_initializer_expression?(%AST.ArrowFunctionExpression{}), do: false + defp duplicate_proto_initializer_expression?(_expression), do: false + + defp proto_data_property?(%AST.Property{ + key: %AST.Identifier{name: "__proto__"}, + kind: :init, + computed: false, + method: false, + shorthand: false + }), + do: true + + defp proto_data_property?(%AST.Property{ + key: %AST.Literal{value: "__proto__"}, + kind: :init, + computed: false, + method: false, + shorthand: false + }), + do: true + + defp proto_data_property?(_property), do: false +end diff --git a/lib/quickbeam/js/parser/validation/strict.ex b/lib/quickbeam/js/parser/validation/strict.ex new file mode 100644 index 000000000..9cfa376ae --- /dev/null +++ b/lib/quickbeam/js/parser/validation/strict.ex @@ -0,0 +1,1031 @@ +defmodule QuickBEAM.JS.Parser.Validation.Strict do + @moduledoc "Strict-mode binding and expression validation." + + alias QuickBEAM.JS.Parser.AST + alias QuickBEAM.JS.Parser.Validation.Strict.{AnnexB, Params} + import QuickBEAM.JS.Parser.Validation.Helpers, only: [add_error: 3, current: 1] + import QuickBEAM.JS.Parser.Validation.Strict.Helpers + + defdelegate validate_async_body_bindings(state, async?, body), to: Params + defdelegate validate_async_function_name(state, async?, id), to: Params + defdelegate validate_async_generator_function_name(state, async_generator?, id), to: Params + defdelegate validate_async_params(state, async?, params), to: Params + defdelegate validate_generator_body_bindings(state, generator?, body), to: Params + defdelegate validate_generator_function_name(state, generator?, id), to: Params + defdelegate validate_generator_params(state, generator?, params), to: Params + defdelegate validate_unique_params(state, params), to: Params + + def validate_strict_function_name( + state, + %AST.Identifier{name: name}, + %AST.BlockStatement{} = body + ) + when name in ["eval", "arguments"] do + if strict_directive_body?(body.body) do + add_error(state, current(state), "restricted binding name in strict mode") + else + state + end + end + + def validate_strict_function_name(state, _id, _body), do: state + + def validate_strict_program_bindings(state, body) do + if state.source_type == :module or strict_directive_body?(body) do + state + |> validate_restricted_strict_names( + program_binding_names(body), + "restricted binding name in strict mode" + ) + |> validate_strict_no_with(body) + |> validate_strict_no_delete_identifier(body) + |> validate_strict_no_legacy_octal(body) + |> validate_strict_no_octal_escape(body) + |> validate_strict_no_restricted_assignment(body) + |> validate_strict_no_call_assignment_targets(body) + |> AnnexB.validate_no_if_function_declarations(body) + |> AnnexB.validate_no_for_in_initializers(body) + |> AnnexB.validate_no_duplicate_block_function_declarations(body) + |> AnnexB.validate_no_duplicate_switch_function_declarations(body) + |> validate_strict_no_yield_references(body) + |> validate_strict_no_restricted_shorthands(body) + |> validate_strict_no_restricted_labels(body) + |> validate_strict_function_expressions(body) + else + state + end + end + + def validate_arrow_params(state, params, body) do + state + |> validate_arrow_context_params(params) + |> validate_duplicate_strict_params(params) + |> validate_strict_function_params(params, body) + end + + defp validate_arrow_context_params(state, params) do + names = binding_names(params) + + cond do + Enum.any?(names, &(&1 == "enum")) -> + add_error(state, current(state), "expected binding identifier") + + state.await_allowed? and Enum.any?(names, &(&1 == "await")) -> + add_error(state, current(state), "await parameter not allowed in async function") + + state.await_allowed? and Enum.any?(params, &contains_await_expression?/1) -> + add_error(state, current(state), "await parameter not allowed in async function") + + state.yield_allowed? and Enum.any?(names, &(&1 == "yield")) -> + add_error(state, current(state), "yield parameter not allowed in generator function") + + state.yield_allowed? and Enum.any?(params, &contains_yield_expression?/1) -> + add_error(state, current(state), "yield parameter not allowed in generator function") + + true -> + state + end + end + + def validate_strict_function_params(state, params, %AST.BlockStatement{} = body) do + state = + state + |> validate_non_simple_duplicate_params(params) + |> validate_formal_body_lexical_conflicts(params, body.body) + + if strict_directive_body?(body.body) do + state + |> validate_strict_non_simple_params(params) + |> validate_duplicate_strict_params(params) + |> validate_restricted_strict_params(params) + |> validate_restricted_strict_names( + program_binding_names(body.body), + "restricted binding name in strict mode" + ) + |> validate_strict_no_with(body.body) + |> validate_strict_no_delete_identifier(body.body) + |> validate_strict_no_legacy_octal(body.body) + |> validate_strict_no_octal_escape(body.body) + |> validate_strict_no_restricted_assignment(body.body) + |> validate_strict_no_call_assignment_targets(body.body) + |> validate_strict_no_restricted_shorthands(body.body) + else + state + end + end + + def validate_strict_function_params(state, _params, _body), do: state + + defp validate_formal_body_lexical_conflicts(state, params, body) do + param_names = binding_names(params) + lexical_names = function_body_lexical_names(body) + + if Enum.any?(param_names, &(&1 in lexical_names)) do + add_error(state, current(state), "duplicate lexical declaration") + else + state + end + end + + defp function_body_lexical_names(body), + do: Enum.flat_map(body, &function_body_statement_lexical_names/1) + + defp function_body_statement_lexical_names(%AST.VariableDeclaration{ + kind: kind, + declarations: declarations + }) + when kind in [:let, :const] do + Enum.flat_map(declarations, &binding_names(&1.id)) + end + + defp function_body_statement_lexical_names(%AST.ClassDeclaration{ + id: %AST.Identifier{name: name} + }), + do: [name] + + defp function_body_statement_lexical_names(%AST.BlockStatement{}), do: [] + + defp function_body_statement_lexical_names(_statement), do: [] + + defp validate_non_simple_duplicate_params(state, params) do + names = identifier_param_names(params) + + if Enum.any?(params, &(not simple_param?(&1))) and length(names) != length(Enum.uniq(names)) do + add_error(state, current(state), "duplicate parameter name not allowed in strict mode") + else + state + end + end + + defp validate_strict_non_simple_params(state, params) do + if Enum.any?(params, &(not simple_param?(&1))) do + add_error(state, current(state), "use strict not allowed with non-simple parameters") + else + state + end + end + + defp simple_param?(%AST.Identifier{}), do: true + defp simple_param?(_param), do: false + + def validate_strict_params(state, params) do + state + |> validate_duplicate_strict_params(params) + |> validate_restricted_strict_params(params) + end + + def validate_strict_body_bindings(state, %AST.BlockStatement{} = body) do + state + |> validate_restricted_strict_names( + program_binding_names(body.body), + "restricted binding name in strict mode" + ) + |> validate_strict_no_with(body.body) + |> validate_strict_no_delete_identifier(body.body) + |> validate_strict_no_legacy_octal(body.body) + |> validate_strict_no_octal_escape(body.body) + |> validate_strict_no_restricted_assignment(body.body) + |> validate_strict_no_call_assignment_targets(body.body) + |> validate_strict_no_restricted_shorthands(body.body) + |> validate_strict_function_expressions(body.body) + end + + defp validate_duplicate_strict_params(state, params) do + names = identifier_param_names(params) + + if length(names) != length(Enum.uniq(names)) do + add_error(state, current(state), "duplicate parameter name not allowed in strict mode") + else + state + end + end + + defp validate_restricted_strict_params(state, params) do + validate_restricted_strict_names( + state, + identifier_param_names(params), + "restricted parameter name in strict mode" + ) + end + + defp validate_restricted_strict_names(state, names, message) do + if Enum.any?(names, &restricted_strict_name?/1) do + add_error(state, current(state), message) + else + state + end + end + + defp validate_strict_no_with(state, statements) when is_list(statements) do + if Enum.any?(statements, &strict_with_statement?/1) do + add_error(state, current(state), "with statement not allowed in strict mode") + else + state + end + end + + defp validate_strict_no_restricted_labels(state, statements) when is_list(statements) do + if Enum.any?(statements, &strict_restricted_label_statement?/1) do + add_error(state, current(state), "restricted binding name in strict mode") + else + state + end + end + + defp strict_restricted_label_statement?(%AST.LabeledStatement{ + label: %AST.Identifier{name: name} + }), + do: restricted_strict_name?(name) + + defp strict_restricted_label_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_restricted_label_statement?/1) + + defp strict_restricted_label_statement?(_statement), do: false + + defp strict_with_statement?(%AST.WithStatement{}), do: true + + defp strict_with_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_with_statement?/1) + + defp strict_with_statement?(%AST.VariableDeclaration{declarations: declarations}), + do: Enum.any?(declarations, &strict_with_statement?(&1.init)) + + defp strict_with_statement?(%AST.FunctionExpression{body: body}), + do: strict_with_statement?(body) + + defp strict_with_statement?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &strict_with_statement?/1) + + defp strict_with_statement?(%AST.Property{value: value}), do: strict_with_statement?(value) + + defp strict_with_statement?(%AST.IfStatement{consequent: consequent, alternate: alternate}), + do: strict_with_statement?(consequent) or strict_with_statement?(alternate) + + defp strict_with_statement?(%AST.WhileStatement{body: body}), do: strict_with_statement?(body) + defp strict_with_statement?(%AST.DoWhileStatement{body: body}), do: strict_with_statement?(body) + defp strict_with_statement?(%AST.ForStatement{body: body}), do: strict_with_statement?(body) + defp strict_with_statement?(%AST.ForInStatement{body: body}), do: strict_with_statement?(body) + defp strict_with_statement?(%AST.ForOfStatement{body: body}), do: strict_with_statement?(body) + + defp strict_with_statement?(%AST.FunctionDeclaration{body: body}), + do: strict_with_statement?(body) + + defp strict_with_statement?(%AST.SwitchStatement{cases: cases}) do + Enum.any?(cases, fn %AST.SwitchCase{consequent: consequent} -> + Enum.any?(consequent, &strict_with_statement?/1) + end) + end + + defp strict_with_statement?(%AST.TryStatement{ + block: block, + handler: handler, + finalizer: finalizer + }) do + strict_with_statement?(block) or strict_with_statement?(handler) or + strict_with_statement?(finalizer) + end + + defp strict_with_statement?(%AST.CatchClause{body: body}), do: strict_with_statement?(body) + defp strict_with_statement?(_statement), do: false + + defp validate_strict_no_delete_identifier(state, statements) when is_list(statements) do + if Enum.any?(statements, &strict_delete_identifier_statement?/1) do + add_error(state, current(state), "delete of identifier not allowed in strict mode") + else + state + end + end + + defp strict_delete_identifier_statement?(%AST.ExpressionStatement{expression: expression}), + do: strict_delete_identifier_expression?(expression) + + defp strict_delete_identifier_statement?(%AST.ReturnStatement{argument: argument}), + do: strict_delete_identifier_expression?(argument) + + defp strict_delete_identifier_statement?(%AST.ThrowStatement{argument: argument}), + do: strict_delete_identifier_expression?(argument) + + defp strict_delete_identifier_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &strict_delete_identifier_expression?(&1.init)) + end + + defp strict_delete_identifier_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_delete_identifier_statement?/1) + + defp strict_delete_identifier_statement?(%AST.IfStatement{ + test: test, + consequent: consequent, + alternate: alternate + }) do + strict_delete_identifier_expression?(test) or strict_delete_identifier_statement?(consequent) or + strict_delete_identifier_statement?(alternate) + end + + defp strict_delete_identifier_statement?(%AST.WhileStatement{test: test, body: body}), + do: strict_delete_identifier_expression?(test) or strict_delete_identifier_statement?(body) + + defp strict_delete_identifier_statement?(%AST.DoWhileStatement{body: body, test: test}), + do: strict_delete_identifier_statement?(body) or strict_delete_identifier_expression?(test) + + defp strict_delete_identifier_statement?(%AST.ForStatement{ + init: init, + test: test, + update: update, + body: body + }) do + strict_delete_identifier_expression?(init) or strict_delete_identifier_expression?(test) or + strict_delete_identifier_expression?(update) or strict_delete_identifier_statement?(body) + end + + defp strict_delete_identifier_statement?(%AST.SwitchStatement{ + discriminant: discriminant, + cases: cases + }) do + strict_delete_identifier_expression?(discriminant) or + Enum.any?(cases, fn %AST.SwitchCase{test: test, consequent: consequent} -> + strict_delete_identifier_expression?(test) or + Enum.any?(consequent, &strict_delete_identifier_statement?/1) + end) + end + + defp strict_delete_identifier_statement?(%AST.TryStatement{ + block: block, + handler: handler, + finalizer: finalizer + }) do + strict_delete_identifier_statement?(block) or strict_delete_identifier_statement?(handler) or + strict_delete_identifier_statement?(finalizer) + end + + defp strict_delete_identifier_statement?(%AST.CatchClause{body: body}), + do: strict_delete_identifier_statement?(body) + + defp strict_delete_identifier_statement?(_statement), do: false + + defp strict_delete_identifier_expression?(%AST.UnaryExpression{ + operator: "delete", + argument: %AST.Identifier{} + }), + do: true + + defp strict_delete_identifier_expression?(%AST.UnaryExpression{argument: argument}), + do: strict_delete_identifier_expression?(argument) + + defp strict_delete_identifier_expression?(%AST.BinaryExpression{left: left, right: right}), + do: strict_delete_identifier_expression?(left) or strict_delete_identifier_expression?(right) + + defp strict_delete_identifier_expression?(%AST.LogicalExpression{left: left, right: right}), + do: strict_delete_identifier_expression?(left) or strict_delete_identifier_expression?(right) + + defp strict_delete_identifier_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: strict_delete_identifier_expression?(left) or strict_delete_identifier_expression?(right) + + defp strict_delete_identifier_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &strict_delete_identifier_expression?/1) + + defp strict_delete_identifier_expression?(%AST.ConditionalExpression{ + test: test, + consequent: consequent, + alternate: alternate + }) do + strict_delete_identifier_expression?(test) or strict_delete_identifier_expression?(consequent) or + strict_delete_identifier_expression?(alternate) + end + + defp strict_delete_identifier_expression?(%AST.CallExpression{ + callee: callee, + arguments: arguments + }) do + strict_delete_identifier_expression?(callee) or + Enum.any?(arguments, &strict_delete_identifier_expression?/1) + end + + defp strict_delete_identifier_expression?(%AST.MemberExpression{ + object: object, + property: property + }), + do: + strict_delete_identifier_expression?(object) or + strict_delete_identifier_expression?(property) + + defp strict_delete_identifier_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &strict_delete_identifier_expression?/1) + + defp strict_delete_identifier_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &strict_delete_identifier_expression?/1) + + defp strict_delete_identifier_expression?(%AST.Property{value: value}), + do: strict_delete_identifier_expression?(value) + + defp strict_delete_identifier_expression?(%AST.SpreadElement{argument: argument}), + do: strict_delete_identifier_expression?(argument) + + defp strict_delete_identifier_expression?(_expression), do: false + + defp validate_strict_no_legacy_octal(state, statements) when is_list(statements) do + if Enum.any?(statements, &strict_legacy_octal_statement?/1) do + add_error(state, current(state), "legacy octal literal not allowed in strict mode") + else + state + end + end + + defp strict_legacy_octal_statement?(%AST.ExpressionStatement{expression: expression}), + do: strict_legacy_octal_expression?(expression) + + defp strict_legacy_octal_statement?(%AST.ReturnStatement{argument: argument}), + do: strict_legacy_octal_expression?(argument) + + defp strict_legacy_octal_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &strict_legacy_octal_expression?(&1.init)) + end + + defp strict_legacy_octal_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_legacy_octal_statement?/1) + + defp strict_legacy_octal_statement?(%AST.IfStatement{ + test: test, + consequent: consequent, + alternate: alternate + }) do + strict_legacy_octal_expression?(test) or strict_legacy_octal_statement?(consequent) or + strict_legacy_octal_statement?(alternate) + end + + defp strict_legacy_octal_statement?(_statement), do: false + + defp strict_legacy_octal_expression?(%AST.Literal{raw: raw}) when is_binary(raw) do + String.match?(raw, ~r/^0[0-9]/) + end + + defp strict_legacy_octal_expression?(%AST.UnaryExpression{argument: argument}), + do: strict_legacy_octal_expression?(argument) + + defp strict_legacy_octal_expression?(%AST.BinaryExpression{left: left, right: right}), + do: strict_legacy_octal_expression?(left) or strict_legacy_octal_expression?(right) + + defp strict_legacy_octal_expression?(%AST.LogicalExpression{left: left, right: right}), + do: strict_legacy_octal_expression?(left) or strict_legacy_octal_expression?(right) + + defp strict_legacy_octal_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: strict_legacy_octal_expression?(left) or strict_legacy_octal_expression?(right) + + defp strict_legacy_octal_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &strict_legacy_octal_expression?/1) + + defp strict_legacy_octal_expression?(%AST.CallExpression{callee: callee, arguments: arguments}), + do: + strict_legacy_octal_expression?(callee) or + Enum.any?(arguments, &strict_legacy_octal_expression?/1) + + defp strict_legacy_octal_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &strict_legacy_octal_expression?/1) + + defp strict_legacy_octal_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &strict_legacy_octal_expression?/1) + + defp strict_legacy_octal_expression?(%AST.Property{value: value}), + do: strict_legacy_octal_expression?(value) + + defp strict_legacy_octal_expression?(_expression), do: false + + defp validate_strict_no_octal_escape(state, statements) when is_list(statements) do + if Enum.any?(statements, &strict_octal_escape_statement?/1) do + add_error(state, current(state), "octal escape sequence not allowed in strict mode") + else + state + end + end + + defp strict_octal_escape_statement?(%AST.ExpressionStatement{expression: expression}), + do: strict_octal_escape_expression?(expression) + + defp strict_octal_escape_statement?(%AST.ReturnStatement{argument: argument}), + do: strict_octal_escape_expression?(argument) + + defp strict_octal_escape_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &strict_octal_escape_expression?(&1.init)) + end + + defp strict_octal_escape_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_octal_escape_statement?/1) + + defp strict_octal_escape_statement?(_statement), do: false + + defp strict_octal_escape_expression?(%AST.Literal{raw: raw}) when is_binary(raw) do + String.match?(raw, ~r/\\(?:[1-9]|0[0-9])/) + end + + defp strict_octal_escape_expression?(%AST.UnaryExpression{argument: argument}), + do: strict_octal_escape_expression?(argument) + + defp strict_octal_escape_expression?(%AST.BinaryExpression{left: left, right: right}), + do: strict_octal_escape_expression?(left) or strict_octal_escape_expression?(right) + + defp strict_octal_escape_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: strict_octal_escape_expression?(left) or strict_octal_escape_expression?(right) + + defp strict_octal_escape_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &strict_octal_escape_expression?/1) + + defp strict_octal_escape_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &strict_octal_escape_expression?/1) + + defp strict_octal_escape_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &strict_octal_escape_expression?/1) + + defp strict_octal_escape_expression?(%AST.Property{value: value}), + do: strict_octal_escape_expression?(value) + + defp strict_octal_escape_expression?(%AST.TemplateLiteral{expressions: expressions}), + do: Enum.any?(expressions, &strict_octal_escape_expression?/1) + + defp strict_octal_escape_expression?(_expression), do: false + + defp validate_strict_no_restricted_assignment(state, statements) when is_list(statements) do + if Enum.any?(statements, &strict_restricted_assignment_statement?/1) do + add_error(state, current(state), "restricted assignment target in strict mode") + else + state + end + end + + defp strict_restricted_assignment_statement?(%AST.ExpressionStatement{expression: expression}), + do: strict_restricted_assignment_expression?(expression) + + defp strict_restricted_assignment_statement?(%AST.ReturnStatement{argument: argument}), + do: strict_restricted_assignment_expression?(argument) + + defp strict_restricted_assignment_statement?(%AST.VariableDeclaration{ + declarations: declarations + }) do + Enum.any?(declarations, &strict_restricted_assignment_expression?(&1.init)) + end + + defp strict_restricted_assignment_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_restricted_assignment_statement?/1) + + defp strict_restricted_assignment_statement?(%AST.ForOfStatement{ + left: left, + right: right, + body: body + }), + do: + for_in_of_restricted_assignment_pattern?(left) or + strict_restricted_assignment_expression?(right) or + strict_restricted_assignment_statement?(body) + + defp strict_restricted_assignment_statement?(%AST.ForInStatement{ + left: left, + right: right, + body: body + }), + do: + for_in_of_restricted_assignment_pattern?(left) or + strict_restricted_assignment_expression?(right) or + strict_restricted_assignment_statement?(body) + + defp strict_restricted_assignment_statement?(%AST.FunctionDeclaration{body: body}), + do: strict_restricted_assignment_statement?(body) + + defp strict_restricted_assignment_statement?(_statement), do: false + + defp strict_restricted_assignment_expression?(%AST.AssignmentExpression{ + left: left, + right: right + }), + do: + restricted_assignment_target?(left) or + strict_restricted_assignment_expression?(right) + + defp strict_restricted_assignment_expression?(%AST.UnaryExpression{argument: argument}), + do: strict_restricted_assignment_expression?(argument) + + defp strict_restricted_assignment_expression?(%AST.FunctionExpression{ + body: %AST.BlockStatement{body: body} + }), + do: Enum.any?(body, &strict_restricted_assignment_statement?/1) + + defp strict_restricted_assignment_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &strict_restricted_assignment_expression?/1) + + defp strict_restricted_assignment_expression?(%AST.Property{value: value}), + do: strict_restricted_assignment_expression?(value) + + defp strict_restricted_assignment_expression?(%AST.BinaryExpression{left: left, right: right}), + do: + strict_restricted_assignment_expression?(left) or + strict_restricted_assignment_expression?(right) + + defp strict_restricted_assignment_expression?(%AST.LogicalExpression{left: left, right: right}), + do: + strict_restricted_assignment_expression?(left) or + strict_restricted_assignment_expression?(right) + + defp strict_restricted_assignment_expression?(%AST.UpdateExpression{argument: argument}), + do: restricted_assignment_target?(argument) + + defp strict_restricted_assignment_expression?(%AST.SequenceExpression{ + expressions: expressions + }), + do: Enum.any?(expressions, &strict_restricted_assignment_expression?/1) + + defp strict_restricted_assignment_expression?(%AST.CallExpression{ + callee: callee, + arguments: arguments + }), + do: + strict_restricted_assignment_expression?(callee) or + Enum.any?(arguments, &strict_restricted_assignment_expression?/1) + + defp strict_restricted_assignment_expression?(_expression), do: false + + defp for_in_of_restricted_assignment_pattern?(%AST.AssignmentExpression{ + left: left, + right: right + }), + do: + for_in_of_restricted_assignment_pattern?(left) or + for_in_of_restricted_assignment_pattern?(right) + + defp for_in_of_restricted_assignment_pattern?(%AST.MemberExpression{ + object: object, + property: property + }), + do: + for_in_of_restricted_assignment_pattern?(object) or + for_in_of_restricted_assignment_pattern?(property) + + defp for_in_of_restricted_assignment_pattern?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &for_in_of_restricted_assignment_pattern?/1) + + defp for_in_of_restricted_assignment_pattern?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &for_in_of_restricted_assignment_pattern?/1) + + defp for_in_of_restricted_assignment_pattern?(%AST.Property{value: value}), + do: for_in_of_restricted_assignment_pattern?(value) + + defp for_in_of_restricted_assignment_pattern?(%AST.SpreadElement{argument: argument}), + do: for_in_of_restricted_assignment_pattern?(argument) + + defp for_in_of_restricted_assignment_pattern?(%AST.AssignmentPattern{left: left, right: right}), + do: + for_in_of_restricted_assignment_pattern?(left) or + for_in_of_restricted_assignment_pattern?(right) + + defp for_in_of_restricted_assignment_pattern?(target), do: restricted_assignment_target?(target) + + defp restricted_assignment_target?(%AST.Identifier{name: name}), + do: restricted_strict_name?(name) + + defp restricted_assignment_target?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &restricted_assignment_target?/1) + + defp restricted_assignment_target?(%AST.ObjectPattern{properties: properties}), + do: Enum.any?(properties, &restricted_assignment_target?/1) + + defp restricted_assignment_target?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &restricted_assignment_target?/1) + + defp restricted_assignment_target?(%AST.ArrayPattern{elements: elements}), + do: Enum.any?(elements, &restricted_assignment_target?/1) + + defp restricted_assignment_target?(%AST.Property{value: value}), + do: restricted_assignment_target?(value) + + defp restricted_assignment_target?(%AST.SpreadElement{argument: argument}), + do: restricted_assignment_target?(argument) + + defp restricted_assignment_target?(%AST.AssignmentPattern{left: left}), + do: restricted_assignment_target?(left) + + defp restricted_assignment_target?(_target), do: false + + defp validate_strict_no_call_assignment_targets(state, statements) when is_list(statements) do + if Enum.any?(statements, &strict_call_assignment_statement?/1) do + add_error(state, current(state), "invalid assignment target") + else + state + end + end + + defp validate_strict_no_yield_references(state, statements) when is_list(statements) do + if Enum.any?(statements, &strict_yield_reference_statement?/1) do + add_error(state, current(state), "yield expression not within generator") + else + state + end + end + + defp validate_strict_no_restricted_shorthands(state, statements) when is_list(statements) do + if Enum.any?(statements, &strict_restricted_shorthand_statement?/1) do + add_error(state, current(state), "invalid object shorthand") + else + state + end + end + + defp strict_restricted_shorthand_statement?(%AST.ExpressionStatement{expression: expression}), + do: strict_restricted_shorthand_expression?(expression) + + defp strict_restricted_shorthand_statement?(%AST.ReturnStatement{argument: argument}), + do: strict_restricted_shorthand_expression?(argument) + + defp strict_restricted_shorthand_statement?(%AST.VariableDeclaration{ + declarations: declarations + }) do + Enum.any?(declarations, &strict_restricted_shorthand_expression?(&1.init)) + end + + defp strict_restricted_shorthand_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_restricted_shorthand_statement?/1) + + defp strict_restricted_shorthand_statement?(_statement), do: false + + defp strict_restricted_shorthand_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &strict_restricted_shorthand_expression?/1) + + defp strict_restricted_shorthand_expression?(%AST.Property{ + shorthand: true, + value: %AST.Identifier{name: name} + }), + do: restricted_strict_name?(name) + + defp strict_restricted_shorthand_expression?(%AST.Property{value: value}), + do: strict_restricted_shorthand_expression?(value) + + defp strict_restricted_shorthand_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &strict_restricted_shorthand_expression?/1) + + defp strict_restricted_shorthand_expression?(_expression), do: false + + defp strict_yield_reference_statement?(%AST.ExpressionStatement{expression: expression}), + do: strict_yield_reference_expression?(expression) + + defp strict_yield_reference_statement?(_statement), do: false + + defp strict_yield_reference_expression?(%AST.Identifier{name: "yield"}), do: true + + defp strict_yield_reference_expression?(%AST.BinaryExpression{left: left, right: right}), + do: strict_yield_reference_expression?(left) or strict_yield_reference_expression?(right) + + defp strict_yield_reference_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: strict_yield_reference_expression?(left) or strict_yield_reference_expression?(right) + + defp strict_yield_reference_expression?(%AST.MemberExpression{ + object: object, + property: property + }), + do: + strict_yield_reference_expression?(object) or + strict_yield_reference_expression?(property) + + defp strict_yield_reference_expression?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &strict_yield_reference_expression?/1) + + defp strict_yield_reference_expression?(%AST.ArrayPattern{elements: elements}), + do: Enum.any?(elements, &strict_yield_reference_expression?/1) + + defp strict_yield_reference_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &strict_yield_reference_expression?/1) + + defp strict_yield_reference_expression?(%AST.ObjectPattern{properties: properties}), + do: Enum.any?(properties, &strict_yield_reference_expression?/1) + + defp strict_yield_reference_expression?(%AST.AssignmentPattern{left: left, right: right}), + do: strict_yield_reference_expression?(left) or strict_yield_reference_expression?(right) + + defp strict_yield_reference_expression?(%AST.Property{key: key, value: value}), + do: strict_yield_reference_expression?(key) or strict_yield_reference_expression?(value) + + defp strict_yield_reference_expression?(%AST.SpreadElement{argument: argument}), + do: strict_yield_reference_expression?(argument) + + defp strict_yield_reference_expression?(%AST.RestElement{argument: argument}), + do: strict_yield_reference_expression?(argument) + + defp strict_yield_reference_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &strict_yield_reference_expression?/1) + + defp strict_yield_reference_expression?(_expression), do: false + + defp validate_strict_function_expressions(state, statements) when is_list(statements) do + cond do + Enum.any?(statements, &strict_duplicate_param_statement?/1) -> + add_error(state, current(state), "duplicate parameter name not allowed in strict mode") + + Enum.any?(statements, &strict_restricted_function_name_statement?/1) -> + add_error(state, current(state), "restricted binding name in strict mode") + + Enum.any?(statements, &strict_restricted_param_statement?/1) -> + add_error(state, current(state), "restricted parameter name in strict mode") + + Enum.any?(statements, &strict_yield_param_statement?/1) -> + add_error(state, current(state), "yield parameter not allowed in generator function") + + true -> + state + end + end + + defp strict_duplicate_param_statement?(%AST.ExpressionStatement{expression: expression}), + do: strict_duplicate_param_expression?(expression) + + defp strict_duplicate_param_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &strict_duplicate_param_expression?(&1.init)) + end + + defp strict_duplicate_param_statement?(%AST.FunctionDeclaration{params: params, body: body}), + do: duplicate_param_names?(params) or strict_duplicate_param_statement?(body) + + defp strict_duplicate_param_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_duplicate_param_statement?/1) + + defp strict_duplicate_param_statement?(_statement), do: false + + defp strict_duplicate_param_expression?(%AST.FunctionExpression{params: params}), + do: duplicate_param_names?(params) + + defp strict_duplicate_param_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: strict_duplicate_param_expression?(left) or strict_duplicate_param_expression?(right) + + defp strict_duplicate_param_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &strict_duplicate_param_expression?/1) + + defp strict_duplicate_param_expression?(_expression), do: false + + defp strict_restricted_function_name_statement?(%AST.ExpressionStatement{ + expression: expression + }), + do: strict_restricted_function_name_expression?(expression) + + defp strict_restricted_function_name_statement?(%AST.VariableDeclaration{ + declarations: declarations + }) do + Enum.any?(declarations, &strict_restricted_function_name_expression?(&1.init)) + end + + defp strict_restricted_function_name_statement?(%AST.FunctionDeclaration{ + id: %AST.Identifier{name: name}, + body: body + }), + do: name in ["eval", "arguments"] or strict_restricted_function_name_statement?(body) + + defp strict_restricted_function_name_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_restricted_function_name_statement?/1) + + defp strict_restricted_function_name_statement?(_statement), do: false + + defp strict_restricted_function_name_expression?(%AST.FunctionExpression{ + id: %AST.Identifier{name: name} + }), + do: restricted_strict_name?(name) + + defp strict_restricted_function_name_expression?(%AST.AssignmentExpression{ + left: left, + right: right + }), + do: + strict_restricted_function_name_expression?(left) or + strict_restricted_function_name_expression?(right) + + defp strict_restricted_function_name_expression?(%AST.SequenceExpression{ + expressions: expressions + }), + do: Enum.any?(expressions, &strict_restricted_function_name_expression?/1) + + defp strict_restricted_function_name_expression?(_expression), do: false + + defp strict_restricted_param_statement?(%AST.ExpressionStatement{expression: expression}), + do: strict_restricted_param_expression?(expression) + + defp strict_restricted_param_statement?(%AST.FunctionDeclaration{params: params}), + do: Enum.any?(identifier_param_names(params), &restricted_strict_name?/1) + + defp strict_restricted_param_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &strict_restricted_param_expression?(&1.init)) + end + + defp strict_restricted_param_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_restricted_param_statement?/1) + + defp strict_restricted_param_statement?(_statement), do: false + + defp strict_restricted_param_expression?(%AST.FunctionExpression{params: params}), + do: Enum.any?(identifier_param_names(params), &restricted_strict_name?/1) + + defp strict_restricted_param_expression?(%AST.ArrowFunctionExpression{params: params}), + do: Enum.any?(identifier_param_names(params), &restricted_strict_name?/1) + + defp strict_restricted_param_expression?(%AST.UnaryExpression{argument: argument}), + do: strict_restricted_param_expression?(argument) + + defp strict_restricted_param_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &strict_restricted_param_expression?/1) + + defp strict_restricted_param_expression?(%AST.Property{value: value}), + do: strict_restricted_param_expression?(value) + + defp strict_restricted_param_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: strict_restricted_param_expression?(left) or strict_restricted_param_expression?(right) + + defp strict_restricted_param_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &strict_restricted_param_expression?/1) + + defp strict_restricted_param_expression?(_expression), do: false + + defp strict_yield_param_statement?(%AST.ExpressionStatement{expression: expression}), + do: strict_yield_param_expression?(expression) + + defp strict_yield_param_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &strict_yield_param_expression?(&1.init)) + end + + defp strict_yield_param_statement?(%AST.FunctionDeclaration{params: params, body: body}), + do: Enum.any?(params, &contains_yield_expression?/1) or strict_yield_param_statement?(body) + + defp strict_yield_param_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_yield_param_statement?/1) + + defp strict_yield_param_statement?(_statement), do: false + + defp strict_yield_param_expression?(%AST.FunctionExpression{params: params}), + do: Enum.any?(params, &contains_yield_expression?/1) + + defp strict_yield_param_expression?(%AST.ArrowFunctionExpression{params: params}), + do: Enum.any?(params, &contains_yield_expression?/1) + + defp strict_yield_param_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: strict_yield_param_expression?(left) or strict_yield_param_expression?(right) + + defp strict_yield_param_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &strict_yield_param_expression?/1) + + defp strict_yield_param_expression?(_expression), do: false + + defp strict_call_assignment_statement?(%AST.ExpressionStatement{expression: expression}), + do: strict_call_assignment_expression?(expression) + + defp strict_call_assignment_statement?(%AST.VariableDeclaration{declarations: declarations}), + do: Enum.any?(declarations, &strict_call_assignment_expression?(&1.init)) + + defp strict_call_assignment_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &strict_call_assignment_statement?/1) + + defp strict_call_assignment_statement?(%AST.ForInStatement{left: %AST.CallExpression{}}), + do: true + + defp strict_call_assignment_statement?(%AST.ForOfStatement{left: %AST.CallExpression{}}), + do: true + + defp strict_call_assignment_statement?(%AST.ForInStatement{ + left: left, + right: right, + body: body + }), + do: + strict_call_assignment_expression?(left) or strict_call_assignment_expression?(right) or + strict_call_assignment_statement?(body) + + defp strict_call_assignment_statement?(%AST.ForOfStatement{ + left: left, + right: right, + body: body + }), + do: + strict_call_assignment_expression?(left) or strict_call_assignment_expression?(right) or + strict_call_assignment_statement?(body) + + defp strict_call_assignment_statement?(_statement), do: false + + defp strict_call_assignment_expression?(%AST.AssignmentExpression{left: %AST.CallExpression{}}), + do: true + + defp strict_call_assignment_expression?(%AST.UpdateExpression{argument: %AST.CallExpression{}}), + do: true + + defp strict_call_assignment_expression?(%AST.AssignmentExpression{left: left, right: right}), + do: strict_call_assignment_expression?(left) or strict_call_assignment_expression?(right) + + defp strict_call_assignment_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &strict_call_assignment_expression?/1) + + defp strict_call_assignment_expression?(%AST.CallExpression{ + callee: callee, + arguments: arguments + }), + do: + strict_call_assignment_expression?(callee) or + Enum.any?(arguments, &strict_call_assignment_expression?/1) + + defp strict_call_assignment_expression?(%AST.MemberExpression{ + object: object, + property: property, + computed: computed? + }) do + strict_call_assignment_expression?(object) or + (computed? and strict_call_assignment_expression?(property)) + end + + defp strict_call_assignment_expression?(_expression), do: false +end diff --git a/lib/quickbeam/js/parser/validation/strict/annex_b.ex b/lib/quickbeam/js/parser/validation/strict/annex_b.ex new file mode 100644 index 000000000..67f59f5c6 --- /dev/null +++ b/lib/quickbeam/js/parser/validation/strict/annex_b.ex @@ -0,0 +1,133 @@ +defmodule QuickBEAM.JS.Parser.Validation.Strict.AnnexB do + @moduledoc "Strict-mode validation for Annex B statement-position exceptions." + + alias QuickBEAM.JS.Parser.AST + import QuickBEAM.JS.Parser.Validation.Helpers, only: [add_error: 3, current: 1] + + def validate_no_if_function_declarations(state, statements) when is_list(statements) do + if Enum.any?(statements, &single_statement_function_declaration?/1) do + add_error( + state, + current(state), + "function declarations can't appear in single-statement context" + ) + else + state + end + end + + def validate_no_for_in_initializers(state, statements) when is_list(statements) do + if Enum.any?(statements, &for_in_initializer_statement?/1) do + add_error(state, current(state), "for-in/of declaration cannot have initializer") + else + state + end + end + + def validate_no_duplicate_block_function_declarations(state, statements) + when is_list(statements) do + if Enum.any?(statements, &duplicate_block_function_declaration?/1) do + add_error(state, current(state), "duplicate lexical declaration") + else + state + end + end + + def validate_no_duplicate_switch_function_declarations(state, statements) + when is_list(statements) do + if Enum.any?(statements, &duplicate_switch_function_declaration?/1) do + add_error(state, current(state), "duplicate lexical declaration") + else + state + end + end + + defp single_statement_function_declaration?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &single_statement_function_declaration?/1) + + defp single_statement_function_declaration?(%AST.IfStatement{ + consequent: consequent, + alternate: alternate + }) do + match?(%AST.FunctionDeclaration{}, consequent) or + match?(%AST.FunctionDeclaration{}, alternate) or + single_statement_function_declaration?(consequent) or + single_statement_function_declaration?(alternate) + end + + defp single_statement_function_declaration?(%AST.LabeledStatement{body: body}), + do: + match?(%AST.FunctionDeclaration{}, body) or + single_statement_function_declaration?(body) + + defp single_statement_function_declaration?(_statement), do: false + + defp for_in_initializer_statement?(%AST.ForInStatement{ + left: %AST.VariableDeclaration{declarations: declarations} + }), + do: + Enum.any?( + declarations, + &match?(%AST.VariableDeclarator{init: init} when not is_nil(init), &1) + ) + + defp for_in_initializer_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &for_in_initializer_statement?/1) + + defp for_in_initializer_statement?(%AST.IfStatement{ + consequent: consequent, + alternate: alternate + }), + do: + for_in_initializer_statement?(consequent) or + for_in_initializer_statement?(alternate) + + defp for_in_initializer_statement?(_statement), do: false + + defp duplicate_block_function_declaration?(%AST.BlockStatement{body: body}) do + function_names = + body + |> Enum.flat_map(fn + %AST.FunctionDeclaration{id: %AST.Identifier{name: name}} -> [name] + _statement -> [] + end) + + length(function_names) != length(Enum.uniq(function_names)) or + Enum.any?(body, &duplicate_block_function_declaration?/1) + end + + defp duplicate_block_function_declaration?(%AST.IfStatement{ + consequent: consequent, + alternate: alternate + }), + do: + duplicate_block_function_declaration?(consequent) or + duplicate_block_function_declaration?(alternate) + + defp duplicate_block_function_declaration?(_statement), do: false + + defp duplicate_switch_function_declaration?(%AST.SwitchStatement{cases: cases}) do + names = + cases + |> Enum.flat_map(& &1.consequent) + |> Enum.flat_map(fn + %AST.FunctionDeclaration{id: %AST.Identifier{name: name}} -> [name] + _statement -> [] + end) + + length(names) != length(Enum.uniq(names)) + end + + defp duplicate_switch_function_declaration?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &duplicate_switch_function_declaration?/1) + + defp duplicate_switch_function_declaration?(%AST.IfStatement{ + consequent: consequent, + alternate: alternate + }), + do: + duplicate_switch_function_declaration?(consequent) or + duplicate_switch_function_declaration?(alternate) + + defp duplicate_switch_function_declaration?(_statement), do: false +end diff --git a/lib/quickbeam/js/parser/validation/strict/helpers.ex b/lib/quickbeam/js/parser/validation/strict/helpers.ex new file mode 100644 index 000000000..4f52a6150 --- /dev/null +++ b/lib/quickbeam/js/parser/validation/strict/helpers.ex @@ -0,0 +1,259 @@ +defmodule QuickBEAM.JS.Parser.Validation.Strict.Helpers do + @moduledoc false + + alias QuickBEAM.JS.Parser.AST + + def program_binding_names(body), do: Enum.flat_map(body, &statement_binding_names/1) + + def statement_binding_names(%AST.ExpressionStatement{expression: expression}), + do: expression_binding_names(expression) + + def statement_binding_names(%AST.ReturnStatement{argument: argument}), + do: expression_binding_names(argument) + + def statement_binding_names(%AST.VariableDeclaration{declarations: declarations}) do + Enum.flat_map(declarations, fn declaration -> + binding_names(declaration.id) ++ expression_binding_names(declaration.init) + end) + end + + def statement_binding_names(%AST.FunctionDeclaration{ + id: %AST.Identifier{name: name}, + body: %AST.BlockStatement{body: body} + }), + do: [name | program_binding_names(body)] + + def statement_binding_names(%AST.ClassDeclaration{id: %AST.Identifier{name: name}}), do: [name] + def statement_binding_names(%AST.BlockStatement{body: body}), do: program_binding_names(body) + + def statement_binding_names(%AST.IfStatement{consequent: consequent, alternate: alternate}) do + statement_binding_names(consequent) ++ statement_binding_names(alternate) + end + + def statement_binding_names(%AST.WhileStatement{body: body}), do: statement_binding_names(body) + + def statement_binding_names(%AST.DoWhileStatement{body: body}), + do: statement_binding_names(body) + + def statement_binding_names(%AST.ForStatement{init: init, body: body}), + do: binding_names_from_for_init(init) ++ statement_binding_names(body) + + def statement_binding_names(%AST.ForInStatement{left: left, body: body}), + do: binding_names_from_for_init(left) ++ statement_binding_names(body) + + def statement_binding_names(%AST.ForOfStatement{left: left, body: body}), + do: binding_names_from_for_init(left) ++ statement_binding_names(body) + + def statement_binding_names(%AST.WithStatement{body: body}), do: statement_binding_names(body) + + def statement_binding_names(%AST.SwitchStatement{cases: cases}) do + Enum.flat_map(cases, &program_binding_names(&1.consequent)) + end + + def statement_binding_names(%AST.TryStatement{ + block: block, + handler: handler, + finalizer: finalizer + }) do + statement_binding_names(block) ++ + catch_binding_names(handler) ++ statement_binding_names(finalizer) + end + + def statement_binding_names(_statement), do: [] + + def expression_binding_names(nil), do: [] + + def expression_binding_names(%AST.FunctionExpression{body: %AST.BlockStatement{body: body}}), + do: program_binding_names(body) + + def expression_binding_names(%AST.ArrowFunctionExpression{ + body: %AST.BlockStatement{body: body} + }), + do: program_binding_names(body) + + def expression_binding_names(%AST.ArrowFunctionExpression{body: body}), + do: expression_binding_names(body) + + def expression_binding_names(%AST.AssignmentExpression{left: left, right: right}), + do: expression_binding_names(left) ++ expression_binding_names(right) + + def expression_binding_names(%AST.SequenceExpression{expressions: expressions}), + do: Enum.flat_map(expressions, &expression_binding_names/1) + + def expression_binding_names(%AST.CallExpression{callee: callee, arguments: arguments}), + do: expression_binding_names(callee) ++ Enum.flat_map(arguments, &expression_binding_names/1) + + def expression_binding_names(%AST.MemberExpression{ + object: object, + property: property, + computed: computed? + }) do + expression_binding_names(object) ++ + if(computed?, do: expression_binding_names(property), else: []) + end + + def expression_binding_names(%AST.ObjectExpression{properties: properties}), + do: Enum.flat_map(properties, &expression_binding_names/1) + + def expression_binding_names(%AST.ArrayExpression{elements: elements}), + do: Enum.flat_map(elements, &expression_binding_names/1) + + def expression_binding_names(%AST.Property{key: key, value: value, computed: computed?}) do + expression_binding_names(value) ++ if(computed?, do: expression_binding_names(key), else: []) + end + + def expression_binding_names(%AST.SpreadElement{argument: argument}), + do: expression_binding_names(argument) + + def expression_binding_names(_expression), do: [] + + def binding_names_from_for_init(%AST.VariableDeclaration{} = declaration), + do: statement_binding_names(declaration) + + def binding_names_from_for_init(_init), do: [] + + def catch_binding_names(%AST.CatchClause{param: nil, body: body}), + do: statement_binding_names(body) + + def catch_binding_names(%AST.CatchClause{param: param, body: body}), + do: binding_names(param) ++ statement_binding_names(body) + + def catch_binding_names(_handler), do: [] + + def body_contains_name?(statements, name) do + Enum.any?(statements, &statement_contains_name?(&1, name)) + end + + def statement_contains_name?(%AST.VariableDeclaration{declarations: declarations}, name), + do: Enum.any?(declarations, &(name in binding_names(&1.id))) + + def statement_contains_name?( + %AST.FunctionDeclaration{id: %AST.Identifier{name: identifier}}, + name + ), + do: identifier == name + + def statement_contains_name?( + %AST.LabeledStatement{label: %AST.Identifier{name: identifier}}, + name + ), + do: identifier == name + + def statement_contains_name?(%AST.BlockStatement{body: body}, name), + do: body_contains_name?(body, name) + + def statement_contains_name?(_statement, _name), do: false + + def strict_directive_body?([ + %AST.ExpressionStatement{expression: %AST.Literal{value: "use strict"}} | _rest + ]), + do: true + + def strict_directive_body?([ + %AST.ExpressionStatement{expression: %AST.Literal{value: value}} | rest + ]) + when is_binary(value), + do: strict_directive_body?(rest) + + def strict_directive_body?(_body), do: false + + def restricted_strict_name?(name) do + name in [ + "eval", + "arguments", + "yield", + "let", + "static", + "implements", + "interface", + "package", + "private", + "protected", + "public" + ] + end + + def duplicate_param_names?(params) do + names = identifier_param_names(params) + length(names) != length(Enum.uniq(names)) + end + + def identifier_param_names(params), do: Enum.flat_map(params, &binding_names/1) + + def binding_names(%AST.Identifier{name: name}), do: [name] + def binding_names(%AST.AssignmentPattern{left: left}), do: binding_names(left) + def binding_names(%AST.RestElement{argument: argument}), do: binding_names(argument) + + def binding_names(%AST.ArrayPattern{elements: elements}), + do: Enum.flat_map(elements, &binding_names/1) + + def binding_names(%AST.ObjectPattern{properties: properties}), + do: Enum.flat_map(properties, &binding_names/1) + + def binding_names(%AST.Property{value: value}), do: binding_names(value) + def binding_names(list) when is_list(list), do: Enum.flat_map(list, &binding_names/1) + def binding_names(nil), do: [] + def binding_names(_param), do: [] + + def contains_yield_expression?(%AST.YieldExpression{}), do: true + def contains_yield_expression?(%AST.Identifier{name: "yield"}), do: true + + def contains_yield_expression?(%AST.BinaryExpression{left: left, right: right}), + do: contains_yield_expression?(left) or contains_yield_expression?(right) + + def contains_yield_expression?(%AST.AssignmentPattern{right: right}), + do: contains_yield_expression?(right) + + def contains_yield_expression?(%AST.ArrayPattern{elements: elements}), + do: Enum.any?(elements, &contains_yield_expression?/1) + + def contains_yield_expression?(%AST.ObjectPattern{properties: properties}), + do: Enum.any?(properties, &contains_yield_expression?/1) + + def contains_yield_expression?(%AST.Property{value: value}), + do: contains_yield_expression?(value) + + def contains_yield_expression?(%AST.RestElement{argument: argument}), + do: contains_yield_expression?(argument) + + def contains_yield_expression?(_param), do: false + + def contains_await_identifier?(%AST.Identifier{name: "await"}), do: true + + def contains_await_identifier?(%AST.AssignmentPattern{right: right}), + do: contains_await_identifier?(right) + + def contains_await_identifier?(%AST.ArrayPattern{elements: elements}), + do: Enum.any?(elements, &contains_await_identifier?/1) + + def contains_await_identifier?(%AST.ObjectPattern{properties: properties}), + do: Enum.any?(properties, &contains_await_identifier?/1) + + def contains_await_identifier?(%AST.Property{value: value}), + do: contains_await_identifier?(value) + + def contains_await_identifier?(%AST.RestElement{argument: argument}), + do: contains_await_identifier?(argument) + + def contains_await_identifier?(_param), do: false + + def contains_await_expression?(%AST.AwaitExpression{}), do: true + def contains_await_expression?(%AST.Identifier{name: "await"}), do: true + + def contains_await_expression?(%AST.AssignmentPattern{right: right}), + do: contains_await_expression?(right) + + def contains_await_expression?(%AST.ArrayPattern{elements: elements}), + do: Enum.any?(elements, &contains_await_expression?/1) + + def contains_await_expression?(%AST.ObjectPattern{properties: properties}), + do: Enum.any?(properties, &contains_await_expression?/1) + + def contains_await_expression?(%AST.Property{value: value}), + do: contains_await_expression?(value) + + def contains_await_expression?(%AST.RestElement{argument: argument}), + do: contains_await_expression?(argument) + + def contains_await_expression?(_param), do: false +end diff --git a/lib/quickbeam/js/parser/validation/strict/params.ex b/lib/quickbeam/js/parser/validation/strict/params.ex new file mode 100644 index 000000000..7e814021c --- /dev/null +++ b/lib/quickbeam/js/parser/validation/strict/params.ex @@ -0,0 +1,156 @@ +defmodule QuickBEAM.JS.Parser.Validation.Strict.Params do + @moduledoc "Async, generator, and duplicate parameter validation." + + alias QuickBEAM.JS.Parser.AST + import QuickBEAM.JS.Parser.Validation.Helpers, only: [add_error: 3, current: 1] + import QuickBEAM.JS.Parser.Validation.Strict.Helpers + + def validate_async_body_bindings(state, true, %AST.BlockStatement{body: body}) do + if body_contains_name?(body, "await") do + add_error(state, current(state), "await parameter not allowed in async function") + else + state + end + end + + def validate_async_body_bindings(state, _async?, _body), do: state + + def validate_async_function_name(state, _async?, _id), do: state + + def validate_async_generator_function_name(state, true, %AST.Identifier{name: "await"}) do + add_error(state, current(state), "await parameter not allowed in async function") + end + + def validate_async_generator_function_name(state, _async_generator?, _id), do: state + + def validate_async_params(state, true, params) do + names = identifier_param_names(params) + + cond do + Enum.any?(names, &(&1 == "await")) or Enum.any?(params, &contains_await_identifier?/1) or + Enum.any?(params, &contains_await_expression?/1) -> + add_error(state, current(state), "await parameter not allowed in async function") + + true -> + state + end + end + + def validate_async_params(state, _async?, _params), do: state + + def validate_generator_body_bindings(state, true, %AST.BlockStatement{body: body}) do + cond do + body_contains_name?(body, "yield") -> + add_error(state, current(state), "yield parameter not allowed in generator function") + + Enum.any?(body, &yield_in_no_in_statement?/1) -> + add_error(state, current(state), "yield expression not allowed here") + + Enum.any?(body, &nested_yield_statement?/1) -> + add_error(state, current(state), "yield expression not allowed here") + + true -> + state + end + end + + def validate_generator_body_bindings(state, _generator?, _body), do: state + + defp yield_in_no_in_statement?(%AST.ForStatement{init: init}), + do: yield_in_no_in_expression?(init) + + defp yield_in_no_in_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &yield_in_no_in_statement?/1) + + defp yield_in_no_in_statement?(_statement), do: false + + defp yield_in_no_in_expression?(%AST.YieldExpression{argument: argument}), + do: yield_argument_contains_in?(argument) + + defp yield_in_no_in_expression?(_expression), do: false + + defp yield_argument_contains_in?(%AST.BinaryExpression{operator: "in"}), do: true + + defp yield_argument_contains_in?(%AST.BinaryExpression{left: left, right: right}), + do: yield_argument_contains_in?(left) or yield_argument_contains_in?(right) + + defp yield_argument_contains_in?(_expression), do: false + + defp nested_yield_statement?(%AST.BlockStatement{body: body}), + do: Enum.any?(body, &nested_yield_statement?/1) + + defp nested_yield_statement?(%AST.ExpressionStatement{expression: expression}), + do: nested_yield_expression?(expression) + + defp nested_yield_statement?(%AST.ReturnStatement{argument: argument}), + do: nested_yield_expression?(argument) + + defp nested_yield_statement?(%AST.VariableDeclaration{declarations: declarations}) do + Enum.any?(declarations, &nested_yield_expression?(&1.init)) + end + + defp nested_yield_statement?(_statement), do: false + + defp nested_yield_expression?(%AST.YieldExpression{parenthesized?: true}), do: false + defp nested_yield_expression?(%AST.YieldExpression{argument: %AST.YieldExpression{}}), do: false + + defp nested_yield_expression?(%AST.YieldExpression{argument: argument}), + do: contains_unparenthesized_yield_expression?(argument) + + defp nested_yield_expression?(%AST.BinaryExpression{left: left, right: right}), + do: nested_yield_expression?(left) or nested_yield_expression?(right) + + defp nested_yield_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &nested_yield_expression?/1) + + defp nested_yield_expression?(_expression), do: false + + defp contains_unparenthesized_yield_expression?(%AST.YieldExpression{parenthesized?: true}), + do: false + + defp contains_unparenthesized_yield_expression?(%AST.YieldExpression{}), do: true + + defp contains_unparenthesized_yield_expression?(%AST.BinaryExpression{ + left: left, + right: right + }), + do: + contains_unparenthesized_yield_expression?(left) or + contains_unparenthesized_yield_expression?(right) + + defp contains_unparenthesized_yield_expression?(%AST.SequenceExpression{ + expressions: expressions + }), + do: Enum.any?(expressions, &contains_unparenthesized_yield_expression?/1) + + defp contains_unparenthesized_yield_expression?(_expression), do: false + + def validate_generator_function_name(state, true, %AST.Identifier{name: "yield"}) do + add_error(state, current(state), "yield parameter not allowed in generator function") + end + + def validate_generator_function_name(state, _generator?, _id), do: state + + def validate_generator_params(state, true, params) do + cond do + Enum.any?(identifier_param_names(params), &(&1 == "yield")) -> + add_error(state, current(state), "yield parameter not allowed in generator function") + + Enum.any?(params, &contains_yield_expression?/1) -> + add_error(state, current(state), "yield parameter not allowed in generator function") + + true -> + state + end + end + + def validate_generator_params(state, _generator?, _params), do: state + + def validate_unique_params(state, params) do + if duplicate_param_names?(params) do + add_error(state, current(state), "duplicate parameter name not allowed in strict mode") + else + state + end + end +end diff --git a/lib/quickbeam/js/parser/validation/targets.ex b/lib/quickbeam/js/parser/validation/targets.ex new file mode 100644 index 000000000..0f9de7ca2 --- /dev/null +++ b/lib/quickbeam/js/parser/validation/targets.ex @@ -0,0 +1,287 @@ +defmodule QuickBEAM.JS.Parser.Validation.Targets do + @moduledoc "Assignment/update target and class constructor validation." + + alias QuickBEAM.JS.Parser.AST + import QuickBEAM.JS.Parser.Validation.Helpers, only: [add_error: 3, current: 1] + + @assignment_ops ~w[= += -= *= /= %= **= <<= >>= >>>= &= ^= |= &&= ||= ??=] + @reserved_assignment_property_names MapSet.new(~w[ + break case catch class const continue debugger default delete do else enum export extends + finally false for function if import in instanceof new null return super switch this throw true try typeof + var void while with + ]) + + def validate_duplicate_constructors(state, body) do + constructors = Enum.count(body, &match?(%AST.MethodDefinition{kind: :constructor}, &1)) + + if constructors > 1 do + add_error(state, current(state), "duplicate constructor") + else + state + end + end + + def validate_object_initializers(state, body) do + if Enum.any?(body, &invalid_object_initializer_statement?/1) do + add_error(state, current(state), "invalid object initializer") + else + state + end + end + + defp invalid_object_initializer_statement?(%AST.ExpressionStatement{expression: expression}), + do: invalid_object_initializer_expression?(expression) + + defp invalid_object_initializer_statement?(%AST.IfStatement{ + test: test, + consequent: consequent, + alternate: alternate + }), + do: + invalid_object_initializer_expression?(test) or + invalid_object_initializer_statement?(consequent) or + invalid_object_initializer_statement?(alternate) + + defp invalid_object_initializer_statement?(%AST.WhileStatement{test: test, body: body}), + do: + invalid_object_initializer_expression?(test) or invalid_object_initializer_statement?(body) + + defp invalid_object_initializer_statement?(%AST.DoWhileStatement{test: test}), + do: invalid_object_initializer_expression?(test) + + defp invalid_object_initializer_statement?(%AST.SwitchStatement{discriminant: discriminant}), + do: invalid_object_initializer_expression?(discriminant) + + defp invalid_object_initializer_statement?(_statement), do: false + + defp invalid_object_initializer_expression?(%AST.AssignmentExpression{right: right}), + do: invalid_object_initializer_expression?(right) + + defp invalid_object_initializer_expression?(%AST.UnaryExpression{argument: argument}), + do: invalid_object_initializer_expression?(argument) + + defp invalid_object_initializer_expression?(%AST.SequenceExpression{expressions: expressions}), + do: Enum.any?(expressions, &invalid_object_initializer_expression?/1) + + defp invalid_object_initializer_expression?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &invalid_object_initializer_property?/1) + + defp invalid_object_initializer_expression?(_expression), do: false + + defp invalid_object_initializer_property?(%AST.Property{ + shorthand: true, + value: %AST.AssignmentPattern{} + }), + do: true + + defp invalid_object_initializer_property?(%AST.Property{ + shorthand: true, + value: %AST.Identifier{name: name} + }), + do: MapSet.member?(@reserved_assignment_property_names, name) + + defp invalid_object_initializer_property?(%AST.Property{ + key: %AST.Literal{}, + shorthand: true, + method: false, + computed: false + }), + do: true + + defp invalid_object_initializer_property?(_property), do: false + + def validate_class_element_names(state, body) do + cond do + Enum.any?(body, &invalid_class_method_name?/1) -> + add_error(state, current(state), "invalid method name") + + Enum.any?(body, &invalid_class_field_name?/1) -> + add_error(state, current(state), "invalid field name") + + true -> + state + end + end + + defp invalid_class_method_name?(%AST.MethodDefinition{ + key: %AST.PrivateIdentifier{name: "constructor"} + }), + do: true + + defp invalid_class_method_name?(%AST.MethodDefinition{computed: true}), do: false + + defp invalid_class_method_name?(%AST.MethodDefinition{static: true, key: key}), + do: prop_name(key) == "prototype" + + defp invalid_class_method_name?(%AST.MethodDefinition{key: %AST.Literal{value: "constructor"}}), + do: false + + defp invalid_class_method_name?(%AST.MethodDefinition{kind: kind, key: key}) + when kind != :constructor, + do: prop_name(key) == "constructor" + + defp invalid_class_method_name?(_element), do: false + + defp invalid_class_field_name?(%AST.FieldDefinition{ + key: %AST.PrivateIdentifier{name: "constructor"} + }), + do: true + + defp invalid_class_field_name?(%AST.FieldDefinition{computed: true}), do: false + + defp invalid_class_field_name?(%AST.FieldDefinition{key: key, static: static?}) do + prop_name(key) == "constructor" or (static? and prop_name(key) == "prototype") + end + + defp invalid_class_field_name?(_element), do: false + + defp prop_name(%AST.Identifier{name: name}), do: name + defp prop_name(%AST.Literal{value: value}) when is_binary(value), do: value + defp prop_name(_key), do: nil + + def validate_optional_chain_base(state, %AST.Identifier{name: "super"}) do + add_error(state, current(state), "optional chain not allowed on super") + end + + def validate_optional_chain_base(state, _left), do: state + + def validate_assignment_target(state, operator, left) when operator in @assignment_ops do + cond do + optional_chain?(left) -> + add_error(state, current(state), "optional chain is not a valid assignment target") + + not valid_assignment_target?(operator, left) -> + add_error(state, current(state), "invalid assignment target") + + invalid_assignment_pattern?(left, state) -> + add_error(state, current(state), "invalid destructuring target") + + true -> + state + end + end + + def validate_assignment_target(state, _operator, _left), do: state + + def validate_update_target(state, argument) do + cond do + optional_chain?(argument) -> + add_error(state, current(state), "optional chain is not a valid assignment target") + + not valid_update_target?(argument) -> + add_error(state, current(state), "invalid assignment target") + + true -> + state + end + end + + defp valid_assignment_target?(_operator, %AST.Identifier{name: name}) + when name in ["this", "super"], + do: false + + defp valid_assignment_target?(_operator, %AST.Identifier{}), do: true + defp valid_assignment_target?(_operator, %AST.MemberExpression{}), do: true + + defp valid_assignment_target?(operator, %AST.CallExpression{}) + when operator in ["&&=", "||=", "??="], + do: false + + defp valid_assignment_target?(_operator, %AST.CallExpression{}), do: true + + defp valid_assignment_target?("=", %AST.BinaryExpression{ + operator: "in", + left: %AST.PrivateIdentifier{} + }), + do: true + + defp valid_assignment_target?("=", %AST.ObjectExpression{parenthesized?: true}), do: false + defp valid_assignment_target?("=", %AST.ObjectExpression{}), do: true + defp valid_assignment_target?("=", %AST.ArrayExpression{}), do: true + defp valid_assignment_target?("=", %AST.ObjectPattern{parenthesized?: true}), do: false + defp valid_assignment_target?("=", %AST.ObjectPattern{}), do: true + defp valid_assignment_target?("=", %AST.ArrayPattern{}), do: true + defp valid_assignment_target?(_operator, _target), do: false + + defp valid_update_target?(%AST.Identifier{name: name}) when name in ["this", "super"], do: false + defp valid_update_target?(%AST.Identifier{}), do: true + defp valid_update_target?(%AST.MemberExpression{}), do: true + + defp valid_update_target?(%AST.CallExpression{callee: %AST.Identifier{name: "import"}}), + do: false + + defp valid_update_target?(%AST.CallExpression{}), do: true + defp valid_update_target?(_target), do: false + + defp invalid_assignment_pattern?(%AST.ObjectPattern{properties: properties}, state) do + invalid_rest_position?(properties) or + Enum.any?(properties, &invalid_assignment_pattern?(&1, state)) + end + + defp invalid_assignment_pattern?(%AST.ArrayPattern{elements: elements}, state) do + invalid_rest_position?(elements) or + Enum.any?(elements, &invalid_assignment_pattern?(&1, state)) + end + + defp invalid_assignment_pattern?(%AST.Property{kind: kind}, _state) when kind in [:get, :set], + do: true + + defp invalid_assignment_pattern?(%AST.Property{method: true}, _state), do: true + + defp invalid_assignment_pattern?( + %AST.Property{shorthand: true, value: %AST.Identifier{name: name}}, + state + ) do + MapSet.member?(@reserved_assignment_property_names, name) or + (name == "yield" and state.yield_allowed?) or (name == "await" and state.await_allowed?) + end + + defp invalid_assignment_pattern?(%AST.Property{value: value}, state), + do: invalid_assignment_pattern?(value, state) + + defp invalid_assignment_pattern?(%AST.RestElement{argument: %AST.AssignmentPattern{}}, _state), + do: true + + defp invalid_assignment_pattern?(%AST.RestElement{argument: argument}, state), + do: invalid_assignment_pattern?(argument, state) + + defp invalid_assignment_pattern?(%AST.AssignmentPattern{left: left}, state), + do: invalid_assignment_pattern?(left, state) + + defp invalid_assignment_pattern?(%AST.SequenceExpression{}, _state), do: true + defp invalid_assignment_pattern?(%AST.FunctionExpression{}, _state), do: true + + defp invalid_assignment_pattern?(_target, _state), do: false + + defp invalid_rest_position?(items) do + last_index = length(items) - 1 + + items + |> Enum.with_index() + |> Enum.any?(fn + {%AST.RestElement{}, index} -> index != last_index + {_item, _index} -> false + end) + end + + defp optional_chain?(%AST.MemberExpression{optional: true}), do: true + defp optional_chain?(%AST.CallExpression{optional: true}), do: true + defp optional_chain?(%AST.MemberExpression{object: object}), do: optional_chain?(object) + defp optional_chain?(%AST.CallExpression{callee: callee}), do: optional_chain?(callee) + + defp optional_chain?(%AST.ObjectExpression{properties: properties}), + do: Enum.any?(properties, &optional_chain?/1) + + defp optional_chain?(%AST.ObjectPattern{properties: properties}), + do: Enum.any?(properties, &optional_chain?/1) + + defp optional_chain?(%AST.ArrayExpression{elements: elements}), + do: Enum.any?(elements, &optional_chain?/1) + + defp optional_chain?(%AST.ArrayPattern{elements: elements}), + do: Enum.any?(elements, &optional_chain?/1) + + defp optional_chain?(%AST.Property{value: value}), do: optional_chain?(value) + defp optional_chain?(%AST.SpreadElement{argument: argument}), do: optional_chain?(argument) + defp optional_chain?(_expression), do: false +end diff --git a/lib/quickbeam/native.ex b/lib/quickbeam/native.ex index 943b32b2c..22eebf544 100644 --- a/lib/quickbeam/native.ex +++ b/lib/quickbeam/native.ex @@ -154,8 +154,10 @@ defmodule QuickBEAM.Native do ], resources: [:RuntimeResource, :PoolResource, :WasmModuleResource, :WasmInstanceResource], nifs: [ + regexp_compile: 2, + regexp_exec: 3, eval: 4, - compile: 2, + compile: 3, call_function: 4, load_module: 3, load_bytecode: 2, diff --git a/lib/quickbeam/quickbeam.zig b/lib/quickbeam/quickbeam.zig index fb2b32f5b..d72014149 100644 --- a/lib/quickbeam/quickbeam.zig +++ b/lib/quickbeam/quickbeam.zig @@ -130,7 +130,7 @@ pub fn eval(resource: RuntimeResource, code: []const u8, timeout_ms: u64, filena return beam.term{ .v = e.enif_make_copy(env, ref_term) }; } -pub fn compile(resource: RuntimeResource, code: []const u8) beam.term { +pub fn compile(resource: RuntimeResource, code: []const u8, filename: []const u8) beam.term { const data = resource.unpack(); const env = beam.context.env orelse return beam.make(.{ .@"error", "no env" }, .{}); @@ -139,12 +139,20 @@ pub fn compile(resource: RuntimeResource, code: []const u8) beam.term { const ref_term = e.enif_make_ref(ref_env); const code_copy = gpa.dupe(u8, code) catch return beam.make(.{ .@"error", "OOM" }, .{}); + const fname_copy = if (filename.len > 0) + (gpa.dupe(u8, filename) catch { + gpa.free(code_copy); + return beam.make(.{ .@"error", "OOM" }, .{}); + }) + else + &[_]u8{}; enqueue(data, .{ .compile = .{ .code = code_copy, .caller_pid = caller_pid, .ref_env = ref_env, .ref_term = ref_term, + .filename = fname_copy, } }); return beam.term{ .v = e.enif_make_copy(env, ref_term) }; @@ -907,3 +915,88 @@ pub fn disasm_bytecode(bytecode: []const u8) beam.term { const term = js_to_beam.convert(ctx, result, env); return beam.make(.{ .ok, beam.term{ .v = term } }, .{}); } + +// ── RegExp NIF ── +const lre = @cImport(@cInclude("libregexp.h")); + +threadlocal var tls_rt: ?*types.qjs.JSRuntime = null; +threadlocal var tls_ctx: ?*types.qjs.JSContext = null; + +fn ensure_regexp_ctx() ?*types.qjs.JSContext { + if (tls_ctx) |ctx| return ctx; + const rt = types.qjs.JS_NewRuntime() orelse return null; + types.qjs.JS_SetMemoryLimit(rt, 8 * 1024 * 1024); + const ctx = types.qjs.JS_NewContext(rt) orelse return null; + tls_rt = rt; + tls_ctx = ctx; + return ctx; +} + +pub fn regexp_exec(bc_buf: []const u8, input: []const u8, last_index: u32) beam.term { + const ctx = ensure_regexp_ctx() orelse return beam.make(null, .{}); + + if (bc_buf.len < 8) return beam.make(null, .{}); + const capture_count: u32 = @intCast(bc_buf[2]); // RE_HEADER_CAPTURE_COUNT + if (capture_count == 0 or capture_count > 255) return beam.make(null, .{}); + + // Read flags from header to determine unicode mode + const flags: u32 = @as(u32, bc_buf[0]) | (@as(u32, bc_buf[1]) << 8); + const is_unicode: c_int = if (flags & 0x10 != 0) 1 else 0; // LRE_FLAG_UNICODE = 1 << 4 + + // Allocate capture array via C malloc + const alloc_count = capture_count * 2; + const capture_mem = std.c.malloc(alloc_count * @sizeOf(?[*]u8)) orelse return beam.make(null, .{}); + defer std.c.free(capture_mem); + const capture: [*]?[*]u8 = @ptrCast(@alignCast(capture_mem)); + for (0..alloc_count) |i| { + capture[i] = null; + } + + const ret = lre.lre_exec( + @ptrCast(capture), + bc_buf.ptr, + input.ptr, + @intCast(last_index), + @intCast(input.len), + is_unicode, + @ptrCast(ctx), + ); + + if (ret != 1) return beam.make(null, .{}); + + var result_terms: [256]beam.term = undefined; + for (0..capture_count) |i| { + const sp = capture[i * 2]; + const ep = capture[i * 2 + 1]; + if (sp != null and ep != null) { + const s: u32 = @intCast(@intFromPtr(sp.?) - @intFromPtr(input.ptr)); + const end_off: u32 = @intCast(@intFromPtr(ep.?) - @intFromPtr(input.ptr)); + result_terms[i] = beam.make(.{ s, end_off }, .{}); + } else { + result_terms[i] = beam.make(null, .{}); + } + } + return beam.make(result_terms[0..capture_count], .{}); +} + +pub fn regexp_compile(pattern: []const u8, flags: u32) beam.term { + const ctx = ensure_regexp_ctx() orelse return beam.make(null, .{}); + + var bc_len: c_int = 0; + var error_msg: [64]u8 = undefined; + + const bc_ptr: ?[*]u8 = lre.lre_compile( + &bc_len, + &error_msg, + error_msg.len, + @ptrCast(pattern.ptr), + pattern.len, + @intCast(flags), + @ptrCast(ctx), + ); + + if (bc_ptr == null or bc_len <= 0) return beam.make(null, .{}); + defer std.c.free(bc_ptr.?); + + return beam.make(bc_ptr.?[0..@intCast(bc_len)], .{}); +} diff --git a/lib/quickbeam/runtime.ex b/lib/quickbeam/runtime.ex index 02937f1f3..29dd38885 100644 --- a/lib/quickbeam/runtime.ex +++ b/lib/quickbeam/runtime.ex @@ -5,7 +5,16 @@ defmodule QuickBEAM.Runtime do require Logger @enforce_keys [:resource] - defstruct [:resource, handlers: %{}, monitors: %{}, workers: %{}, websockets: %{}, pending: %{}] + defstruct [ + :resource, + mode: :nif, + handlers: %{}, + monitors: %{}, + workers: %{}, + websockets: %{}, + pending: %{}, + beam_pending_msgs: [] + ] @type t :: %__MODULE__{ resource: reference(), @@ -68,18 +77,20 @@ defmodule QuickBEAM.Runtime do @spec eval(GenServer.server(), String.t(), keyword()) :: QuickBEAM.js_result() def eval(server, code, opts \\ []) when is_binary(code) do timeout_ms = Keyword.get(opts, :timeout, 0) + filename = Keyword.get(opts, :filename, "") vars = Keyword.get(opts, :vars) if vars && vars != %{} do - GenServer.call(server, {:eval_with_vars, code, timeout_ms, vars}, :infinity) + GenServer.call(server, {:eval_with_vars, code, timeout_ms, vars, filename}, :infinity) else - GenServer.call(server, {:eval, code, timeout_ms}, :infinity) + GenServer.call(server, {:eval, code, timeout_ms, filename}, :infinity) end end - @spec compile(GenServer.server(), String.t()) :: {:ok, binary()} | {:error, String.t()} - def compile(server, code) when is_binary(code) do - GenServer.call(server, {:compile, code}, :infinity) + @spec compile(GenServer.server(), String.t(), String.t()) :: + {:ok, binary()} | {:error, QuickBEAM.JSError.t() | String.t()} + def compile(server, code, filename \\ "") when is_binary(code) and is_binary(filename) do + GenServer.call(server, {:compile, code, filename}, :infinity) end @spec load_bytecode(GenServer.server(), binary()) :: @@ -295,6 +306,7 @@ defmodule QuickBEAM.Runtime do do: Map.merge(builtin_handlers, @browser_handlers), else: builtin_handlers + mode = Keyword.get(opts, :mode, :nif) merged_handlers = builtin_handlers |> Map.merge(user_handlers) nif_opts = @@ -303,7 +315,7 @@ defmodule QuickBEAM.Runtime do |> Map.new() resource = QuickBEAM.Native.start_runtime(self(), nif_opts) - state = %__MODULE__{resource: resource, handlers: merged_handlers} + state = %__MODULE__{resource: resource, mode: mode, handlers: merged_handlers} if QuickBEAM.Cover.enabled?(), do: sync_enable_coverage(resource) install_builtins(state, apis) install_defines(state, Keyword.get(opts, :define, %{})) @@ -440,6 +452,14 @@ defmodule QuickBEAM.Runtime do end @impl true + def handle_call(:get_mode, _from, state) do + {:reply, state.mode, state} + end + + def handle_call(:get_handlers, _from, state) do + {:reply, state.handlers, state} + end + def handle_call(:info, _from, state) do handlers = state.handlers @@ -451,14 +471,14 @@ defmodule QuickBEAM.Runtime do end @impl true - def handle_call({:eval_with_vars, code, timeout_ms, vars}, from, state) do + def handle_call({:eval_with_vars, code, timeout_ms, vars, filename}, from, state) do names = Map.keys(vars) Enum.each(vars, fn {name, value} -> QuickBEAM.Native.define_global(state.resource, name, value) end) - ref = QuickBEAM.Native.eval(state.resource, code, timeout_ms, "") + ref = QuickBEAM.Native.eval(state.resource, code, timeout_ms, filename) transform = fn result -> QuickBEAM.Native.delete_globals(state.resource, names) @@ -483,8 +503,8 @@ defmodule QuickBEAM.Runtime do {:noreply, %{state | pending: Map.put(state.pending, ref, {from, transform})}} end - def handle_call({:compile, code}, from, state) do - ref = QuickBEAM.Native.compile(state.resource, code) + def handle_call({:compile, code, filename}, from, state) do + ref = QuickBEAM.Native.compile(state.resource, code, filename) transform = fn {:ok, {:bytes, bytecode}} -> {:ok, bytecode} @@ -537,9 +557,14 @@ defmodule QuickBEAM.Runtime do end)} end + def handle_call(:take_pending_messages, _from, state) do + {:reply, state.beam_pending_msgs, %{state | beam_pending_msgs: []}} + end + # ── NIF dispatch callbacks ── - defp nif_eval(state, code, timeout), do: QuickBEAM.Native.eval(state.resource, code, timeout, "") + defp nif_eval(state, code, timeout, filename \\ ""), + do: QuickBEAM.Native.eval(state.resource, code, timeout, filename) defp nif_call(state, fn_name, args, timeout), do: QuickBEAM.Native.call_function(state.resource, fn_name, args, timeout) @@ -656,24 +681,6 @@ defmodule QuickBEAM.Runtime do handle_websocket_started(socket_id, pid, state) end - def handle_info({:ws_send, socket_id, kind, payload}, state) do - case Map.get(state.websockets, socket_id) do - {pid, _ref} -> GenServer.cast(pid, {:send, kind, payload}) - nil -> :ok - end - - {:noreply, state} - end - - def handle_info({:ws_close, socket_id, code, reason}, state) do - case Map.get(state.websockets, socket_id) do - {pid, _ref} -> GenServer.cast(pid, {:close, code, reason}) - nil -> :ok - end - - {:noreply, state} - end - def handle_info({:websocket_event, message}, state) do QuickBEAM.Native.send_message(state.resource, message) {:noreply, state} diff --git a/lib/quickbeam/server.ex b/lib/quickbeam/server.ex index ceefa4263..de21f690b 100644 --- a/lib/quickbeam/server.ex +++ b/lib/quickbeam/server.ex @@ -45,6 +45,12 @@ defmodule QuickBEAM.Server do {:noreply, put_pending(state, ref, from, js_error_transform())} end + @impl true + def handle_call({:eval, code, timeout_ms, filename}, from, state) do + ref = nif_eval(state, code, timeout_ms, filename) + {:noreply, put_pending(state, ref, from, js_error_transform())} + end + @impl true def handle_call({:call, fn_name, args, timeout_ms}, from, state) do ref = nif_call(state, fn_name, args, timeout_ms) @@ -104,7 +110,31 @@ defmodule QuickBEAM.Server do @impl true def handle_cast({:send_message, message}, state) do - nif_send_message(state, message) + if state.mode == :beam do + {:noreply, %{state | beam_pending_msgs: state.beam_pending_msgs ++ [message]}} + else + nif_send_message(state, message) + {:noreply, state} + end + end + + @impl true + def handle_info({:ws_send, socket_id, kind, payload}, state) do + case Map.get(state.websockets, socket_id) do + {pid, _ref} -> GenServer.cast(pid, {:send, kind, payload}) + nil -> :ok + end + + {:noreply, state} + end + + @impl true + def handle_info({:ws_close, socket_id, code, reason}, state) do + case Map.get(state.websockets, socket_id) do + {pid, _ref} -> GenServer.cast(pid, {:close, code, reason}) + nil -> :ok + end + {:noreply, state} end @@ -117,7 +147,9 @@ defmodule QuickBEAM.Server do end defp pop_websocket(state, ref) do - case Enum.find(state.websockets, fn {_socket_id, {_pid, monitor_ref}} -> monitor_ref == ref end) do + case Enum.find(state.websockets, fn {_socket_id, {_pid, monitor_ref}} -> + monitor_ref == ref + end) do {socket_id, {_pid, _monitor_ref}} -> {true, %{state | websockets: Map.delete(state.websockets, socket_id)}} diff --git a/lib/quickbeam/vm/builtin.ex b/lib/quickbeam/vm/builtin.ex new file mode 100644 index 000000000..b4bfc98d6 --- /dev/null +++ b/lib/quickbeam/vm/builtin.ex @@ -0,0 +1,374 @@ +defmodule QuickBEAM.VM.Builtin do + @moduledoc "Macros and helpers for defining JS builtins." + + @doc """ + Uniform macros for defining JS builtins in all contexts. + + All builtins use 2-arity `fn args, this ->` convention. + + ## Module-level dispatch (generates def clauses) + + proto "push" do ... end # → def proto_property("push") + static "isArray" do ... end # → def static_property("isArray") + static_val "PI", :math.pi() # → def static_property("PI"), do: value + + ## Named object (generates def object/0) + + js_object "Math" do + method "floor" do ... end + val "PI", :math.pi() + end + + ## Inline maps and objects + + build_methods do # returns %{"name" => {:builtin, ...}, ...} + method "add" do ... end + args_method "from", &from_args/1 + receiver_method "slice", &slice/2 + this_method "toJSON", &to_json/1 + symbol_method "Symbol.iterator" do ... end + accessor "size" do + get do ... end + end + prop "size", 0 + end + + object do # returns Heap.wrap(%{"name" => {:builtin, ...}, ...}) + prop "type", type + method "preventDefault" do ... end + end + + object heap: false do # returns the raw map for post-processing + prop "searchParams", search_params + end + + constructor "DOMException", &build_dom_exception/2 do + proto do + extends build_error_proto() + end + end + + `args` and `this` are injected in all `proto`/`static`/`method` bodies. + `arg/3`, `argv/2`, `builtin_*`, and `iterator_from/1` cover the repeated + argument-defaulting, function-wrapping, and iterator boilerplate used by Web APIs. + Catch-all fallbacks are auto-generated by @before_compile. + """ + + defmacro __using__(_opts) do + quote do + @behaviour QuickBEAM.VM.Runtime.BuiltinObject + + import QuickBEAM.VM.Builtin, + only: [ + proto: 2, + static: 2, + static_val: 2, + js_object: 2, + build_methods: 1, + build_object: 1, + object: 1, + object: 2, + constructor: 2, + constructor: 3, + arg: 2, + arg: 3, + argv: 2, + builtin: 2, + builtin_args: 2, + builtin_receiver: 2, + builtin_this: 2, + iterator_from: 1 + ] + + Module.register_attribute(__MODULE__, :__has_proto, accumulate: false) + Module.register_attribute(__MODULE__, :__has_static, accumulate: false) + @before_compile QuickBEAM.VM.Builtin + end + end + + @doc "Emits fallback clauses for modules that define prototype or static properties." + defmacro __before_compile__(env) do + has_proto = Module.get_attribute(env.module, :__has_proto) + has_static = Module.get_attribute(env.module, :__has_static) + + proto_fallback = + if has_proto do + quote do: def(proto_property(_), do: :undefined) + end + + static_fallback = + if has_static do + quote do: def(static_property(_), do: :undefined) + end + + [proto_fallback, static_fallback] + |> Enum.reject(&is_nil/1) + |> case do + [] -> nil + blocks -> {:__block__, [], blocks} + end + end + + # ── Module-level dispatch macros ── + + @doc "Defines a prototype property as a JavaScript builtin function." + defmacro proto(name, do: body) do + quote do + @__has_proto true + def proto_property(unquote(name)) do + unquote(build_builtin(name, body)) + end + end + end + + @doc "Defines a constructor/static property as a JavaScript builtin function." + defmacro static(name, do: body) do + quote do + @__has_static true + def static_property(unquote(name)) do + unquote(build_builtin(name, body)) + end + end + end + + @doc "Defines a constructor/static property as a fixed value." + defmacro static_val(name, value) do + quote do + @__has_static true + def static_property(unquote(name)), do: unquote(value) + end + end + + # ── Named object macro ── + + @doc "Defines a named builtin object exported by `object/0`." + defmacro js_object(name, do: block) do + entries = normalize_block(block) + map_entries = Enum.map(entries, &build_map_entry/1) + + quote do + def object do + {:builtin, unquote(name), %{unquote_splicing(map_entries)}} + end + end + end + + # ── Inline map/list macros ── + + @doc "Builds a raw map of builtin method/property entries." + defmacro build_methods(do: block) do + entries = normalize_block(block) + map_entries = Enum.map(entries, &build_map_entry/1) + quote do: %{unquote_splicing(map_entries)} + end + + defmacro object(opts \\ [], do: block) do + entries = normalize_block(block) + map_entries = Enum.map(entries, &build_map_entry/1) + heap? = Keyword.get(opts, :heap, true) + + if heap? do + quote do + QuickBEAM.VM.Heap.wrap(%{unquote_splicing(map_entries)}) + end + else + quote do: %{unquote_splicing(map_entries)} + end + end + + @doc "Builds a heap-wrapped object from builtin method/property entries." + defmacro build_object(do: block) do + entries = normalize_block(block) + map_entries = Enum.map(entries, &build_map_entry/1) + + quote do + QuickBEAM.VM.Heap.wrap(%{unquote_splicing(map_entries)}) + end + end + + @doc "Registers a JavaScript constructor and optional prototype definition." + defmacro constructor(name, callback) do + build_constructor(name, callback, [], nil) + end + + defmacro constructor(name, callback, do: block) do + {proto_entries, parent} = parse_constructor_block(block) + build_constructor(name, callback, proto_entries, parent) + end + + # ── Shared builders ── + + defp build_constructor(name, callback, proto_entries, parent) do + proto_map_entries = Enum.map(proto_entries, &build_map_entry/1) + + quote do + QuickBEAM.VM.Runtime.Constructors.register( + unquote(name), + unquote(callback), + %{unquote_splicing(proto_map_entries)}, + unquote(parent) + ) + end + end + + defp build_builtin(name, body) do + quote do + {:builtin, unquote(name), + fn var!(args), var!(this) -> + _ = var!(args) + _ = var!(this) + unquote(body) + end} + end + end + + defp normalize_block({:__block__, _, entries}), do: entries + defp normalize_block(single), do: [single] + + defp parse_constructor_block(block) do + block + |> normalize_block() + |> Enum.reduce({[], nil}, fn + {:proto, _, [[do: proto_block]]}, {_entries, _parent} -> + parse_proto_block(proto_block) + + entry, {entries, parent} -> + {[entry | entries], parent} + end) + |> then(fn {entries, parent} -> {Enum.reverse(entries), parent} end) + end + + defp parse_proto_block(block) do + block + |> normalize_block() + |> Enum.reduce({[], nil}, fn + {:extends, _, [parent]}, {entries, _parent} -> {entries, parent} + entry, {entries, parent} -> {[entry | entries], parent} + end) + |> then(fn {entries, parent} -> {Enum.reverse(entries), parent} end) + end + + defp build_map_entry({:method, _, [name, [do: body]]}) do + {name, build_builtin(name, body)} + end + + defp build_map_entry({:args_method, _, [name, callback]}) do + {name, quote(do: QuickBEAM.VM.Builtin.builtin_args(unquote(name), unquote(callback)))} + end + + defp build_map_entry({:receiver_method, _, [name, callback]}) do + {name, quote(do: QuickBEAM.VM.Builtin.builtin_receiver(unquote(name), unquote(callback)))} + end + + defp build_map_entry({:this_method, _, [name, callback]}) do + {name, quote(do: QuickBEAM.VM.Builtin.builtin_this(unquote(name), unquote(callback)))} + end + + defp build_map_entry({:symbol_method, _, [name, [do: body]]}) do + {{:symbol, name}, build_builtin("[#{name}]", body)} + end + + defp build_map_entry({:accessor, _, [name, [do: block]]}) do + {getter, setter} = build_accessor_parts(name, block) + {name, quote(do: {:accessor, unquote(getter), unquote(setter)})} + end + + defp build_map_entry({:getter, _, [name, [do: body]]}) do + {name, quote(do: {:accessor, unquote(build_builtin("get #{name}", body)), nil})} + end + + defp build_map_entry({:val, _, [name, value]}) do + {name, value} + end + + defp build_map_entry({:prop, _, [name, value]}) do + {name, value} + end + + defp build_accessor_parts(name, block) do + block + |> normalize_block() + |> Enum.reduce({nil, nil}, fn + {:get, _, [[do: body]]}, {_getter, setter} -> {build_builtin("get #{name}", body), setter} + {:set, _, [[do: body]]}, {getter, _setter} -> {getter, build_builtin("set #{name}", body)} + end) + end + + # ── Runtime helpers ── + + @doc "Returns a positional argument with a JavaScript `:undefined` default." + def arg(args, index, default \\ :undefined), do: Enum.at(args, index, default) + + def argv(args, defaults) do + defaults + |> Enum.with_index() + |> Enum.map(fn {default, index} -> arg(args, index, default) end) + end + + @doc "Wraps a two-arity callback in the VM builtin tuple representation." + def builtin(name, callback) when is_function(callback, 2), do: {:builtin, name, callback} + + def builtin_args(name, callback) when is_function(callback, 1) do + {:builtin, name, fn args, _this -> callback.(args) end} + end + + def builtin_receiver(name, callback) when is_function(callback, 2) do + {:builtin, name, fn args, this -> callback.(this, args) end} + end + + @doc "Wraps a receiver-only callback in the VM builtin tuple representation." + def builtin_this(name, callback) when is_function(callback, 1) do + {:builtin, name, fn _args, this -> callback.(this) end} + end + + def put_if_present(map, _key, nil), do: map + def put_if_present(map, key, value), do: Map.put(map, key, value) + + def iterator_from(items) do + iter = QuickBEAM.VM.Heap.wrap_iterator(items) + + with {:obj, ref} <- iter do + QuickBEAM.VM.Heap.update_obj(ref, %{}, fn map -> + Map.put( + map, + {:symbol, "Symbol.iterator"}, + builtin("[Symbol.iterator]", fn _, this -> this end) + ) + end) + end + + iter + end + + # ── Runtime dispatch ── + + alias QuickBEAM.VM.Bytecode + alias QuickBEAM.VM.JSThrow + + @doc "Dispatches a VM callable value to its underlying Elixir callback." + def call({:builtin, _, cb}, args, this), do: cb.(args, this) + + def call({:bound, _, inner, _, _}, args, this), do: call(inner, args, this) + + def call(f, args, _this) when is_function(f, 2), do: f.(args, nil) + + def call(f, args, _this) when is_function(f, 1), do: f.(args) + + def call(f, args, _this) when is_function(f), do: apply(f, args) + + def call(_, _, _), + do: JSThrow.type_error!("not a function") + + @doc "Returns whether a VM value can be called as a JavaScript function." + def callable?(%Bytecode.Function{}), do: true + + def callable?({:closure, _, %Bytecode.Function{}}), do: true + + def callable?({:builtin, _, _}), do: true + + def callable?({:bound, _, _, _, _}), do: true + + def callable?(f) when is_function(f), do: true + + def callable?(_), do: false +end diff --git a/lib/quickbeam/vm/bytecode.ex b/lib/quickbeam/vm/bytecode.ex new file mode 100644 index 000000000..79c1adfe7 --- /dev/null +++ b/lib/quickbeam/vm/bytecode.ex @@ -0,0 +1,652 @@ +defmodule QuickBEAM.VM.Bytecode do + @moduledoc """ + Parses QuickJS bytecode binaries into Elixir data structures. + + Binary format matches JS_WriteObjectAtoms / JS_ReadObjectAtoms / JS_ReadFunctionTag + in priv/c_src/quickjs.c exactly. + """ + + alias QuickBEAM.VM.{LEB128, Opcodes} + import Bitwise + + # JS_ATOM_NULL=0, plus 228 DEF entries from quickjs-atom.h + @js_atom_end Opcodes.js_atom_end() + + # Pre-compute tag constants for use in match clauses + @tag_null Opcodes.bc_tag_null() + @tag_undefined Opcodes.bc_tag_undefined() + @tag_bool_false Opcodes.bc_tag_bool_false() + @tag_bool_true Opcodes.bc_tag_bool_true() + @tag_int32 Opcodes.bc_tag_int32() + @tag_float64 Opcodes.bc_tag_float64() + @tag_string Opcodes.bc_tag_string() + @tag_function_bytecode Opcodes.bc_tag_function_bytecode() + @tag_object Opcodes.bc_tag_object() + @tag_array Opcodes.bc_tag_array() + @tag_big_int Opcodes.bc_tag_big_int() + @tag_template_object Opcodes.bc_tag_template_object() + @tag_regexp Opcodes.bc_tag_regexp() + + defmodule Function do + @moduledoc "Decoded QuickJS function bytecode and metadata used by the VM interpreter." + @type t :: %__MODULE__{} + defstruct [ + :name, + :filename, + line_num: 1, + col_num: 1, + pc2line: <<>>, + source: <<>>, + arg_count: 0, + var_count: 0, + defined_arg_count: 0, + stack_size: 0, + var_ref_count: 0, + locals: [], + closure_vars: [], + constants: [], + byte_code: <<>>, + has_prototype: false, + has_simple_parameter_list: false, + is_derived_class_constructor: false, + need_home_object: false, + func_kind: 0, + new_target_allowed: false, + super_call_allowed: false, + super_allowed: false, + arguments_allowed: false, + is_strict_mode: false, + has_debug_info: false + ] + end + + defmodule VarDef do + @moduledoc "Decoded QuickJS local variable definition metadata." + defstruct [ + :name, + :scope_level, + :scope_next, + :var_kind, + :is_const, + :is_lexical, + :is_captured, + :var_ref_idx + ] + end + + defmodule ClosureVar do + @moduledoc "Decoded QuickJS closure capture metadata." + defstruct [:name, :var_idx, :closure_type, :is_const, :is_lexical, :var_kind] + end + + defstruct [:version, :atoms, :value] + + @doc "Decodes a QuickJS bytecode binary into a `%QuickBEAM.VM.Bytecode{}` structure." + @spec decode(binary()) :: {:ok, struct()} | {:error, term()} + def decode(data) when is_binary(data) do + with {:ok, version, rest} <- LEB128.read_u8(data), + :ok <- validate_version(version), + <<_checksum::little-unsigned-32, rest2::binary>> <- rest, + {:ok, atoms, rest3} <- read_atoms(rest2), + {:ok, value, _rest4} <- read_object(rest3, atoms) do + {:ok, %__MODULE__{version: version, atoms: atoms, value: value}} + else + {:error, _} = err -> err + _ -> {:error, :unexpected_end} + end + end + + # ── Atom table ── + # Matches JS_ReadObjectAtoms: reads idx_to_atom_count entries. + # Each entry: type=0 → const atom (u32), type≠0 → string atom. + + defp read_atoms(data) do + with {:ok, count, rest} <- LEB128.read_unsigned(data) do + read_atom_list(rest, count, []) + end + end + + defp read_atom_list(data, 0, acc), do: {:ok, List.to_tuple(Enum.reverse(acc)), data} + + defp read_atom_list(data, count, acc) do + with {:ok, type, rest} <- LEB128.read_u8(data) do + if type == 0 do + with {:ok, _atom_id, rest2} <- LEB128.read_u32(rest) do + read_atom_list(rest2, count - 1, [:__const_atom__ | acc]) + end + else + with {:ok, str, rest2} <- read_string_raw(rest) do + read_atom_list(rest2, count - 1, [str | acc]) + end + end + end + end + + # bc_get_atom: reads LEB128 value v. + # If v & 1 → tagged int (v >> 1). + # If v even → idx = v >> 1: + # idx < JS_ATOM_END → predefined runtime atom (return as {:predefined, idx}) + # idx >= JS_ATOM_END → atom table at idx - JS_ATOM_END + defp read_atom_ref(data, atoms) do + with {:ok, v, rest} <- LEB128.read_unsigned(data) do + if band(v, 1) == 1 do + {:ok, {:tagged_int, bsr(v, 1)}, rest} + else + idx = bsr(v, 1) + + name = + case idx do + 0 -> + "" + + n when n < @js_atom_end -> + {:predefined, n} + + _ -> + local_idx = idx - @js_atom_end + + if local_idx < tuple_size(atoms), + do: elem(atoms, local_idx), + else: {:unknown_atom, idx} + end + + {:ok, name, rest} + end + end + end + + # ── String reading ── + # bc_get_leb128 for len (where bit0=is_wide, bits1+=actual_len), then raw bytes. + + defp read_binary_raw(data) do + with {:ok, len_encoded, rest} <- LEB128.read_unsigned(data) do + byte_len = bsr(len_encoded, 1) + + if byte_size(rest) < byte_len do + {:error, :unexpected_end} + else + <> = rest + {:ok, raw, rest2} + end + end + end + + defp read_string_raw(data) do + with {:ok, len_encoded, rest} <- LEB128.read_unsigned(data) do + is_wide = band(len_encoded, 1) == 1 + char_len = bsr(len_encoded, 1) + byte_len = if is_wide, do: char_len * 2, else: char_len + + if byte_size(rest) < byte_len do + {:error, :unexpected_end} + else + <> = rest + + if is_wide do + {:ok, wide_to_utf8(str), rest2} + else + {:ok, latin1_to_utf8(str), rest2} + end + end + end + end + + defp latin1_to_utf8(data) do + for <>, into: <<>>, do: <> + end + + defp wide_to_utf8(data) do + data + |> decode_utf16_le() + |> codepoints_to_binary() + end + + defp codepoints_to_binary(codepoints) do + IO.iodata_to_binary( + for cp <- codepoints do + if cp >= 0xD800 and cp <= 0xDFFF do + # Lone surrogate: encode as CESU-8 (3-byte UTF-8-like encoding) + <<0xE0 ||| cp >>> 12, 0x80 ||| (cp >>> 6 &&& 0x3F), 0x80 ||| (cp &&& 0x3F)>> + else + <> + end + end + ) + end + + defp decode_utf16_le(data, acc \\ []) + defp decode_utf16_le(<<>>, acc), do: Enum.reverse(acc) + + defp decode_utf16_le(<>, acc) + when hi >= 0xD800 and hi <= 0xDBFF and lo >= 0xDC00 and lo <= 0xDFFF do + cp = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000 + decode_utf16_le(rest, [cp | acc]) + end + + defp decode_utf16_le(<>, acc) do + decode_utf16_le(rest, [c | acc]) + end + + # ── Object deserialization ── + # Matches JS_ReadObjectRec switch(tag). + + defp read_object(<<@tag_null, rest::binary>>, _atoms), do: {:ok, nil, rest} + defp read_object(<<@tag_undefined, rest::binary>>, _atoms), do: {:ok, :undefined, rest} + defp read_object(<<@tag_bool_false, rest::binary>>, _atoms), do: {:ok, false, rest} + defp read_object(<<@tag_bool_true, rest::binary>>, _atoms), do: {:ok, true, rest} + + defp read_object(<<@tag_int32, rest::binary>>, _atoms) do + LEB128.read_signed(rest) + end + + defp read_object(<<@tag_float64, rest::binary>>, _atoms) do + case rest do + <> -> {:ok, val, rest2} + _ -> {:error, :unexpected_end} + end + end + + defp read_object(<<@tag_string, rest::binary>>, _atoms), do: read_string_raw(rest) + + defp read_object(<<@tag_function_bytecode, rest::binary>>, atoms), + do: read_function(rest, atoms) + + defp read_object(<<@tag_object, rest::binary>>, atoms), do: read_plain_object(rest, atoms) + defp read_object(<<@tag_array, rest::binary>>, atoms), do: read_array(rest, atoms) + + defp read_object(<<@tag_big_int, rest::binary>>, _atoms) do + with {:ok, len, rest2} <- LEB128.read_unsigned(rest) do + if byte_size(rest2) < len do + {:error, :unexpected_end} + else + <> = rest2 + value = decode_bigint_twos_complement(bytes) + {:ok, {:bigint, value}, rest3} + end + end + end + + defp read_object(<<@tag_template_object, rest::binary>>, atoms) do + with {:ok, count, rest2} <- LEB128.read_unsigned(rest), + {:ok, elems, rest3} <- read_array_elems(rest2, count, [], atoms), + {:ok, raw, rest4} <- read_object(rest3, atoms) do + {:ok, {:template_object, elems, raw}, rest4} + end + end + + defp read_object(<<@tag_regexp, rest::binary>>, _atoms) do + with {:ok, bytecode, rest2} <- read_binary_raw(rest), + {:ok, source, rest3} <- read_string_raw(rest2) do + {:ok, {:regexp, bytecode, source}, rest3} + end + end + + defp read_object(<>, _atoms), do: {:error, {:unknown_tag, tag}} + defp read_object(<<>>, _atoms), do: {:error, :unexpected_end} + + defp decode_bigint_twos_complement(<<>>), do: 0 + + defp decode_bigint_twos_complement(bytes) do + # QuickJS stores bigint as little-endian two's complement bytes + size = byte_size(bytes) + <> = bytes + # Check sign bit + if band(binary_part(bytes, size - 1, 1) |> :binary.decode_unsigned(), 0x80) != 0 do + value - (1 <<< (size * 8)) + else + value + end + end + + defp read_plain_object(data, atoms) do + with {:ok, count, rest} <- LEB128.read_unsigned(data) do + read_props(rest, count, %{}, atoms) + end + end + + defp read_array(data, atoms) do + with {:ok, count, rest} <- LEB128.read_unsigned(data) do + read_array_elems(rest, count, [], atoms) + end + end + + defp read_props(data, 0, acc, _atoms), do: {:ok, {:object, acc}, data} + + defp read_props(data, count, acc, atoms) do + with {:ok, key, rest} <- read_prop_key(data, atoms), + {:ok, val, rest2} <- read_object(rest, atoms) do + read_props(rest2, count - 1, Map.put(acc, key, val), atoms) + end + end + + defp read_array_elems(data, 0, acc, _atoms), do: {:ok, {:array, Enum.reverse(acc)}, data} + + defp read_array_elems(data, count, acc, atoms) do + with {:ok, val, rest} <- read_object(data, atoms) do + read_array_elems(rest, count - 1, [val | acc], atoms) + end + end + + # Property keys: JS_ReadObjectRec handles them as full objects. + # In practice: tag=BC_TAG_INT32 for integer keys, or tag=BC_TAG_STRING/atom. + defp read_prop_key(data, atoms), do: read_object(data, atoms) + + # ── Function bytecode ── + # Matches JS_ReadFunctionTag exactly. + # + # Layout: + # flags (u16 raw LE) + # is_strict_mode (u8) + # func_name (bc_get_atom → LEB128) + # arg_count (leb128_u16) + # var_count (leb128_u16) + # defined_arg_count (leb128_u16) + # stack_size (leb128_u16) + # var_ref_count (leb128_u16) + # closure_var_count (leb128_u16) + # cpool_count (leb128_int) + # byte_code_len (leb128_int) + # local_count (leb128_int) + # [vardefs × local_count] + # [closure_vars × closure_var_count] + # [cpool × cpool_count] — cpool written BEFORE bytecode + # [bytecode × byte_code_len] + # [debug_info if has_debug_info: filename_atom + line_num] + + defp read_function(data, atoms) do + # flags: raw u16 little-endian (bc_put_u16 / bc_get_u16) + case data do + <> -> + read_function_body(flags, rest, atoms) + + _ -> + {:error, :unexpected_end} + end + end + + defp validate_version(version) do + if version == Opcodes.bc_version(), do: :ok, else: {:error, {:bad_version, version}} + end + + defp read_function_body(flags, data, atoms) do + flags_map = decode_func_flags(flags) + + with {:ok, strict, rest} <- LEB128.read_u8(data), + {:ok, func_name, rest} <- read_atom_ref(rest, atoms), + {:ok, arg_count, rest} <- LEB128.read_unsigned(rest), + {:ok, var_count, rest} <- LEB128.read_unsigned(rest), + {:ok, defined_arg_count, rest} <- LEB128.read_unsigned(rest), + {:ok, stack_size, rest} <- LEB128.read_unsigned(rest), + {:ok, var_ref_count, rest} <- LEB128.read_unsigned(rest), + {:ok, closure_var_count, rest} <- LEB128.read_unsigned(rest), + {:ok, cpool_count, rest} <- LEB128.read_signed(rest), + {:ok, byte_code_len, rest} <- LEB128.read_signed(rest), + {:ok, local_count, rest} <- LEB128.read_signed(rest), + {:ok, locals, rest} <- read_vardefs(rest, local_count, atoms), + {:ok, closure_vars, rest} <- read_closure_vars(rest, closure_var_count, atoms), + {:ok, cpool, rest} <- read_cpool(rest, cpool_count, atoms) do + if byte_size(rest) < byte_code_len do + {:error, :unexpected_end} + else + <> = rest + + {debug_info, rest} = read_debug_info(rest, flags_map.has_debug_info, atoms) + + fun = %Function{ + name: func_name, + arg_count: arg_count, + var_count: var_count, + defined_arg_count: defined_arg_count, + stack_size: stack_size, + var_ref_count: var_ref_count, + locals: locals, + closure_vars: closure_vars, + constants: cpool, + byte_code: byte_code, + filename: debug_info.filename, + line_num: debug_info.line_num, + col_num: debug_info.col_num, + pc2line: debug_info.pc2line, + source: debug_info.source, + is_strict_mode: strict > 0, + has_prototype: flags_map.has_prototype, + has_simple_parameter_list: flags_map.has_simple_parameter_list, + is_derived_class_constructor: flags_map.is_derived_class_constructor, + need_home_object: flags_map.need_home_object, + func_kind: flags_map.func_kind, + new_target_allowed: flags_map.new_target_allowed, + super_call_allowed: flags_map.super_call_allowed, + super_allowed: flags_map.super_allowed, + arguments_allowed: flags_map.arguments_allowed, + has_debug_info: flags_map.has_debug_info + } + + {:ok, fun, rest} + end + end + end + + # Must match JS_WriteFunctionTag bit layout: + # bit 0: has_prototype + # bit 1: has_simple_parameter_list + # bit 2: is_derived_class_constructor + # bit 3: need_home_object + # bits 4-5: func_kind (2 bits) + # bit 6: new_target_allowed + # bit 7: super_call_allowed + # bit 8: super_allowed + # bit 9: arguments_allowed + # bit 10: has_debug_info (backtrace_barrier in writer, has_debug_info in reader) + defp decode_func_flags(v16) do + %{ + has_prototype: band(bsr(v16, 0), 1) == 1, + has_simple_parameter_list: band(bsr(v16, 1), 1) == 1, + is_derived_class_constructor: band(bsr(v16, 2), 1) == 1, + need_home_object: band(bsr(v16, 3), 1) == 1, + func_kind: band(bsr(v16, 4), 0x3), + new_target_allowed: band(bsr(v16, 6), 1) == 1, + super_call_allowed: band(bsr(v16, 7), 1) == 1, + super_allowed: band(bsr(v16, 8), 1) == 1, + arguments_allowed: band(bsr(v16, 9), 1) == 1, + backtrace_barrier: band(bsr(v16, 10), 1) == 1, + has_debug_info: band(bsr(v16, 11), 1) == 1 + } + end + + # ── Vardefs ── + # Matches JS_ReadFunctionTag vardef loop: + # var_name (bc_get_atom), scope_level (leb128_int), scope_next (leb128_int, then -1), + # flags (u8): var_kind(4), is_const(1), is_lexical(1), is_captured(1) + # if is_captured: var_ref_idx (leb128_u16) + + defp read_vardefs(data, 0, _atoms), do: {:ok, [], data} + + defp read_vardefs(data, count, atoms) do + read_vardefs_loop(data, count, atoms, []) + end + + defp read_vardefs_loop(data, 0, _atoms, acc), do: {:ok, Enum.reverse(acc), data} + + defp read_vardefs_loop(data, count, atoms, acc) do + with {:ok, name, rest} <- read_atom_ref(data, atoms), + {:ok, scope_level, rest} <- LEB128.read_signed(rest), + {:ok, scope_next_raw, rest} <- LEB128.read_signed(rest), + <> <- rest do + scope_next = scope_next_raw - 1 + var_kind = band(flags, 0xF) + is_const = band(bsr(flags, 4), 1) == 1 + is_lexical = band(bsr(flags, 5), 1) == 1 + is_captured = band(bsr(flags, 6), 1) == 1 + + {var_ref_idx, rest} = + if is_captured do + with {:ok, idx, rest} <- LEB128.read_unsigned(rest), do: {idx, rest} + else + {nil, rest} + end + + vd = %VarDef{ + name: name, + scope_level: scope_level, + scope_next: scope_next, + var_kind: var_kind, + is_const: is_const, + is_lexical: is_lexical, + is_captured: is_captured, + var_ref_idx: var_ref_idx + } + + read_vardefs_loop(rest, count - 1, atoms, [vd | acc]) + end + end + + # ── Closure vars ── + # Matches JS_ReadFunctionTag closure_var loop: + # var_name (bc_get_atom), var_idx (leb128_int), flags (leb128_int): + # closure_type(3), is_const(1), is_lexical(1), var_kind(4) + + defp read_closure_vars(data, 0, _atoms), do: {:ok, [], data} + defp read_closure_vars(data, count, atoms), do: read_closure_vars_loop(data, count, atoms, []) + + defp read_closure_vars_loop(data, 0, _atoms, acc), do: {:ok, Enum.reverse(acc), data} + + defp read_closure_vars_loop(data, count, atoms, acc) do + with {:ok, name, rest} <- read_atom_ref(data, atoms), + {:ok, var_idx, rest} <- LEB128.read_signed(rest), + {:ok, flags, rest} <- LEB128.read_signed(rest) do + closure_type = band(flags, 0x7) + is_const = band(bsr(flags, 3), 1) == 1 + is_lexical = band(bsr(flags, 4), 1) == 1 + var_kind = band(bsr(flags, 5), 0xF) + + cv = %ClosureVar{ + name: name, + var_idx: var_idx, + closure_type: closure_type, + is_const: is_const, + is_lexical: is_lexical, + var_kind: var_kind + } + + read_closure_vars_loop(rest, count - 1, atoms, [cv | acc]) + end + end + + defp read_cpool(data, 0, _atoms), do: {:ok, [], data} + defp read_cpool(data, count, atoms), do: read_cpool_loop(data, count, atoms, []) + + defp read_cpool_loop(data, 0, _atoms, acc), do: {:ok, Enum.reverse(acc), data} + + defp read_cpool_loop(data, count, atoms, acc) do + case read_object(data, atoms) do + {:ok, val, rest} -> read_cpool_loop(rest, count - 1, atoms, [val | acc]) + {:error, _} = err -> err + end + end + + defp read_debug_info(data, false, _atoms) do + {%{filename: nil, line_num: 1, col_num: 1, pc2line: <<>>, source: <<>>}, data} + end + + defp read_debug_info(data, true, atoms) do + with {:ok, filename, rest} <- read_atom_ref(data, atoms), + {:ok, line_num, rest} <- LEB128.read_signed(rest), + {:ok, col_num, rest} <- LEB128.read_signed(rest), + {:ok, pc2line_len, rest} <- LEB128.read_signed(rest), + true <- byte_size(rest) >= pc2line_len, + <> <- rest, + {:ok, source_len, rest} <- LEB128.read_signed(rest), + true <- byte_size(rest) >= source_len, + <> <- rest do + {%{ + filename: filename, + line_num: line_num, + col_num: col_num, + pc2line: pc2line, + source: source + }, rest} + else + _ -> {%{filename: nil, line_num: 1, col_num: 1, pc2line: <<>>, source: <<>>}, data} + end + end + + @pc2line_base -1 + @pc2line_range 5 + @pc2line_op_first 1 + + @doc "Returns the byte offset of the instruction at `insn_index` within a function bytecode blob." + def instruction_offset(byte_code, insn_index) + when is_binary(byte_code) and is_integer(insn_index) do + do_instruction_offset(byte_code, byte_size(byte_code), 0, 0, insn_index) + end + + defp do_instruction_offset(_bc, _len, pos, idx, target) when idx >= target, do: pos + + defp do_instruction_offset(bc, len, pos, idx, target) when pos < len do + op = :binary.at(bc, pos) + + case Opcodes.info(op) do + {_name, size, _n_pop, _n_push, _fmt} -> + do_instruction_offset(bc, len, pos + size, idx + 1, target) + + _ -> + pos + end + end + + defp do_instruction_offset(_bc, _len, pos, _idx, _target), do: pos + + @doc "Resolves a decoded function instruction index to source line and column information." + def source_position(%Function{} = fun, insn_index) do + pc = instruction_offset(fun.byte_code, insn_index) + + fun + |> decode_pc2line(pc) + |> maybe_apply_source_hint(fun) + end + + defp decode_pc2line(%Function{pc2line: <<>>} = fun, _pc), do: {fun.line_num, fun.col_num} + + defp decode_pc2line(%Function{} = fun, target_pc) do + do_decode_pc2line(fun.pc2line, target_pc, 0, fun.line_num, fun.col_num) + end + + defp do_decode_pc2line(<<>>, _target_pc, _pc, line_num, col_num), do: {line_num, col_num} + + defp do_decode_pc2line(data, target_pc, pc, line_num, col_num) do + <> = data + + {next_pc, next_line, next_col, rest2} = + if op_byte == 0 do + {:ok, diff_pc, rest1} = LEB128.read_unsigned(rest) + {:ok, diff_line, rest2} = LEB128.read_signed(rest1) + {:ok, diff_col, rest3} = LEB128.read_signed(rest2) + {pc + diff_pc, line_num + diff_line, col_num + diff_col, rest3} + else + op = op_byte - @pc2line_op_first + {:ok, diff_col, rest3} = LEB128.read_signed(rest) + + {pc + div(op, @pc2line_range), line_num + rem(op, @pc2line_range) + @pc2line_base, + col_num + diff_col, rest3} + end + + if target_pc < next_pc do + {line_num, col_num} + else + do_decode_pc2line(rest2, target_pc, next_pc, next_line, next_col) + end + end + + defp maybe_apply_source_hint(pos, %Function{source: source}) when is_binary(source) do + case Regex.scan(~r/line\s+(\d+),\s*column\s+(\d+)/, source, capture: :all_but_first) do + [[hint_line, hint_col]] -> + hint = {String.to_integer(hint_line), String.to_integer(hint_col)} + if pos > hint, do: hint, else: pos + + _ -> + pos + end + end + + defp maybe_apply_source_hint(pos, _fun), do: pos +end diff --git a/lib/quickbeam/vm/compiler.ex b/lib/quickbeam/vm/compiler.ex new file mode 100644 index 000000000..4affb8d9c --- /dev/null +++ b/lib/quickbeam/vm/compiler.ex @@ -0,0 +1,116 @@ +defmodule QuickBEAM.VM.Compiler do + @moduledoc "JIT compiler entry point: lowers bytecode to BEAM modules, caches them, and invokes compiled functions." + + alias QuickBEAM.VM.{Bytecode, Decoder, Heap} + alias QuickBEAM.VM.Compiler.{Forms, Lowering, Optimizer, Runner} + + @type compiled_fun :: {module(), atom()} + @type beam_file :: {:beam_file, module(), list(), list(), list(), list()} + + @doc "Invokes the runtime object represented by this module." + def invoke(fun, args) do + depth = Heap.get_invoke_depth() + Heap.put_invoke_depth(depth + 1) + + result = Runner.invoke(fun, args) + + Heap.put_invoke_depth(depth) + + if depth == 0 and Heap.gc_needed?() do + extra = + case result do + {:ok, v} -> [v, fun | args] + _ -> [fun | args] + end + + Heap.gc(extra) + end + + result + end + + @doc "Compiles a bytecode function for optimized execution." + def compile(%Bytecode.Function{} = fun) do + module = module_name(fun) + entry = ctx_entry_name() + + case :code.is_loaded(module) do + {:file, _} -> + {:ok, {module, entry}} + + false -> + with {:ok, ^module, ^entry, binary} <- compile_binary(fun), + {:module, ^module} <- :code.load_binary(module, ~c"quickbeam_compiler", binary) do + {:ok, {module, entry}} + else + {:error, _} = error -> error + other -> {:error, {:load_failed, other}} + end + end + end + + def compile(_), do: {:error, :var_refs_not_supported} + + @doc "Returns a disassembly of bytecode for diagnostics." + def disasm(%Bytecode.Function{} = fun) do + case disasm_compiled(fun) do + {:ok, _} = ok -> ok + {:error, _} = error -> disasm_single_nested(fun.constants, error) + end + end + + def disasm(_), do: {:error, :var_refs_not_supported} + + defp disasm_compiled(%Bytecode.Function{} = fun) do + with {:ok, _module, _entry, binary} <- compile_binary(fun), + {:beam_file, _, _, _, _, _} = beam_file <- :beam_disasm.file(binary) do + {:ok, beam_file} + else + {:error, _, _} = error -> {:error, error} + {:error, _} = error -> error + end + end + + defp disasm_single_nested(constants, original_error) do + case Enum.filter(constants, &match?(%Bytecode.Function{}, &1)) do + [%Bytecode.Function{} = fun] -> disasm(fun) + _ -> original_error + end + end + + defp compile_binary(%Bytecode.Function{} = fun) do + module = module_name(fun) + entry = entry_name() + ctx_entry = ctx_entry_name() + + with {:ok, instructions} <- Decoder.decode(fun.byte_code, fun.arg_count), + optimized = Optimizer.optimize(instructions, fun.constants), + {:ok, {slot_count, block_forms}} <- Lowering.lower(fun, optimized), + {:ok, _module, binary} <- + Forms.compile_module( + module, + entry, + ctx_entry, + fun, + fun.arg_count, + slot_count, + block_forms + ) do + {:ok, module, ctx_entry, binary} + end + end + + defp module_name(fun) do + hash = + fun + |> :erlang.term_to_binary() + |> then(&:crypto.hash(:sha256, &1)) + |> binary_part(0, 8) + |> Base.encode16(case: :lower) + + Module.concat(QuickBEAM.VM.Compiled, "F#{hash}") + end + + defp entry_name, do: :run + defp ctx_entry_name, do: :run_ctx +end diff --git a/lib/quickbeam/vm/compiler/analysis/cfg.ex b/lib/quickbeam/vm/compiler/analysis/cfg.ex new file mode 100644 index 000000000..38d6ab8d6 --- /dev/null +++ b/lib/quickbeam/vm/compiler/analysis/cfg.ex @@ -0,0 +1,210 @@ +defmodule QuickBEAM.VM.Compiler.Analysis.CFG do + @moduledoc "Control-flow graph analysis: identifies basic-block boundaries and inlineable branch targets." + + alias QuickBEAM.VM.Opcodes + + @doc "Returns block entries metadata for compiler analysis." + def block_entries(instructions) do + entries = + instructions + |> Enum.with_index() + |> Enum.reduce(MapSet.new([0]), fn {{op, args}, idx}, acc -> + case opcode_name(op) do + {:ok, name} when name in [:if_false, :if_false8, :if_true, :if_true8] -> + [target] = args + acc |> MapSet.put(target) |> MapSet.put(idx + 1) + + {:ok, name} when name in [:goto, :goto8, :goto16, :catch] -> + [target] = args + MapSet.put(acc, target) + + {:ok, name} + when name in [ + :with_get_var, + :with_put_var, + :with_delete_var, + :with_make_ref, + :with_get_ref, + :with_get_ref_undef + ] -> + [_atom_idx, target, _is_with] = args + acc |> MapSet.put(target) |> MapSet.put(idx + 1) + + {:ok, name} + when name in [ + :initial_yield, + :yield, + :yield_star, + :async_yield_star, + :gosub + ] -> + MapSet.put(acc, idx + 1) + + _ -> + acc + end + end) + + entries + |> MapSet.to_list() + |> Enum.sort() + end + + @doc "Helper for control-flow graph analysis: identifies basic-block boundaries and inlineable branch targets." + def next_entry(entries, start), do: Enum.find(entries, &(&1 > start)) + + @doc "Returns predecessor counts for compiler control-flow analysis." + def predecessor_counts(instructions, entries) do + predecessor_sources(instructions, entries) + |> Enum.into(%{}, fn {target, preds} -> {target, length(preds)} end) + end + + @doc "Returns predecessor sources for compiler control-flow analysis." + def predecessor_sources(instructions, entries) do + t = List.to_tuple(instructions) + size = tuple_size(t) + + Enum.reduce(entries, %{}, fn start, preds -> + next = next_entry(entries, start) + + case do_block_terminal(t, size, start, next) do + {:branch, target, term_idx} when is_integer(next) -> + preds + |> add_predecessor(target, term_idx) + |> add_predecessor(next, term_idx) + + {:catch, target, term_idx} when is_integer(next) -> + preds + |> add_predecessor(target, term_idx) + |> add_predecessor(next, term_idx) + + {:goto, target, term_idx} -> + add_predecessor(preds, target, term_idx) + + {:fallthrough, target_idx} -> + add_predecessor(preds, target_idx, target_idx - 1) + + _ -> + preds + end + end) + end + + @doc "Helper for control-flow graph analysis: identifies basic-block boundaries and inlineable branch targets." + def inlineable_entries(instructions, entries) do + instructions + |> predecessor_sources(entries) + |> Enum.reduce(MapSet.new(), fn {target, preds}, acc -> + case preds do + [pred_end] -> + if pred_end < target and not protected_target?(instructions, target) do + MapSet.put(acc, target) + else + acc + end + + _ -> + acc + end + end) + end + + @doc "Helper for control-flow graph analysis: identifies basic-block boundaries and inlineable branch targets." + def opcode_name(op) do + case Opcodes.info(op) do + {name, _size, _pop, _push, _fmt} -> {:ok, name} + nil -> {:error, {:unknown_opcode, op}} + end + end + + @doc "Helper for control-flow graph analysis: identifies basic-block boundaries and inlineable branch targets." + def matching_nip_catch(instructions, catch_idx) do + t = List.to_tuple(instructions) + find_nip_catch(t, catch_idx + 1, tuple_size(t)) + end + + @doc "Returns block terminal metadata for compiler analysis." + def block_terminal(instructions, start, next_entry) do + t = List.to_tuple(instructions) + do_block_terminal(t, tuple_size(t), start, next_entry) + end + + @doc "Returns block successors metadata for compiler analysis." + def block_successors(instructions, entries, start) do + next = next_entry(entries, start) + t = List.to_tuple(instructions) + + case do_block_terminal(t, tuple_size(t), start, next) do + {:branch, target, _idx} when is_integer(next) -> [target, next] + {:catch, target, _idx} when is_integer(next) -> [target, next] + {:goto, target, _idx} -> [target] + {:fallthrough, target_idx} -> [target_idx] + _ -> [] + end + end + + defp do_block_terminal(_instructions, size, idx, _next_entry) when idx >= size, + do: {:done, idx} + + defp do_block_terminal(_instructions, _size, idx, idx), do: {:fallthrough, idx} + + defp do_block_terminal(instructions, size, idx, next_entry) do + {op, args} = elem(instructions, idx) + + case {opcode_name(op), args} do + {{:ok, name}, [target]} when name in [:if_false, :if_false8, :if_true, :if_true8] -> + {:branch, target, idx} + + {{:ok, :catch}, [target]} -> + {:catch, target, idx} + + {{:ok, name}, [target]} when name in [:goto, :goto8, :goto16] -> + {:goto, target, idx} + + {{:ok, name}, [_argc]} when name in [:tail_call, :tail_call_method] -> + {:done, idx} + + {{:ok, name}, _args} when name in [:return, :return_undef, :throw, :throw_error] -> + {:done, idx} + + _ -> + do_block_terminal(instructions, size, idx + 1, next_entry) + end + end + + defp add_predecessor(preds, target, pred_end), + do: Map.update(preds, target, [pred_end], &[pred_end | &1]) + + defp protected_target?(instructions, target) do + Enum.any?(instructions, fn {op, args} -> + case {opcode_name(op), args} do + {{:ok, name}, [^target]} when name in [:catch, :gosub] -> true + _ -> false + end + end) + end + + defp find_nip_catch(instructions, idx, size) when is_tuple(instructions) do + find_nip_catch_t(instructions, idx, size, 0) + end + + defp find_nip_catch_t(_instructions, idx, size, _depth) when idx >= size, do: :error + + defp find_nip_catch_t(instructions, idx, size, depth) do + {op, _args} = elem(instructions, idx) + + case opcode_name(op) do + {:ok, :catch} -> + find_nip_catch_t(instructions, idx + 1, size, depth + 1) + + {:ok, :nip_catch} when depth == 0 -> + {:ok, idx} + + {:ok, :nip_catch} -> + find_nip_catch_t(instructions, idx + 1, size, depth - 1) + + _ -> + find_nip_catch_t(instructions, idx + 1, size, depth) + end + end +end diff --git a/lib/quickbeam/vm/compiler/analysis/stack.ex b/lib/quickbeam/vm/compiler/analysis/stack.ex new file mode 100644 index 000000000..c65a02185 --- /dev/null +++ b/lib/quickbeam/vm/compiler/analysis/stack.ex @@ -0,0 +1,151 @@ +defmodule QuickBEAM.VM.Compiler.Analysis.Stack do + @moduledoc "Stack-depth inference: computes operand-stack depth at every basic-block entry." + + alias QuickBEAM.VM.Compiler.Analysis.CFG + alias QuickBEAM.VM.Opcodes + + @doc "Helper for stack-depth inference: computes operand-stack depth at every basic-block entry." + def infer_block_stack_depths(instructions, entries) do + t = List.to_tuple(instructions) + walk_block_stack_depths(t, tuple_size(t), entries, [{0, 0}], %{}) + end + + @doc "Helper for stack-depth inference: computes operand-stack depth at every basic-block entry." + def stack_effect(op, args) do + case {CFG.opcode_name(op), args} do + {{:ok, name}, [argc]} when name in [:call, :call0, :call1, :call2, :call3, :tail_call] -> + {:ok, argc + 1, if(name == :tail_call, do: 0, else: 1)} + + {{:ok, name}, [argc]} when name in [:call_method, :tail_call_method] -> + {:ok, argc + 2, if(name == :tail_call_method, do: 0, else: 1)} + + {{:ok, :call_constructor}, [argc]} -> + {:ok, argc + 2, 1} + + {{:ok, :array_from}, [argc]} -> + {:ok, argc, 1} + + {{:ok, _name}, _} -> + case Opcodes.info(op) do + {_name, _size, pop_count, push_count, _fmt} -> {:ok, pop_count, push_count} + nil -> {:error, {:unknown_opcode, op}} + end + + {{:error, _} = error, _} -> + error + end + end + + defp walk_block_stack_depths(_instructions, _size, _entries, [], depths), do: {:ok, depths} + + defp walk_block_stack_depths(instructions, size, entries, [{start, depth} | rest], depths) do + case Map.fetch(depths, start) do + {:ok, ^depth} -> + walk_block_stack_depths(instructions, size, entries, rest, depths) + + {:ok, other_depth} -> + {:error, {:inconsistent_block_stack_depth, start, other_depth, depth}} + + :error -> + with {:ok, successors} <- + simulate_block_stack_depths(instructions, size, entries, start, depth) do + walk_block_stack_depths( + instructions, + size, + entries, + rest ++ successors, + Map.put(depths, start, depth) + ) + end + end + end + + defp simulate_block_stack_depths(instructions, size, entries, start, depth) do + next_entry = CFG.next_entry(entries, start) + do_simulate_block_stack_depths(instructions, size, start, next_entry, depth) + end + + defp do_simulate_block_stack_depths(_instructions, size, idx, _next_entry, _depth) + when idx >= size do + {:error, {:missing_terminator, idx}} + end + + defp do_simulate_block_stack_depths(_instructions, _size, idx, idx, depth), + do: {:ok, [{idx, depth}]} + + defp do_simulate_block_stack_depths(instructions, size, idx, next_entry, depth) do + {op, args} = elem(instructions, idx) + + with {:ok, next_depth} <- apply_stack_effect(op, args, depth) do + case {CFG.opcode_name(op), args} do + {{:ok, name}, [target]} when name in [:if_false, :if_false8, :if_true, :if_true8] -> + if is_nil(next_entry) do + {:error, {:missing_fallthrough_block, target, name}} + else + {:ok, [{target, next_depth}, {next_entry, next_depth}]} + end + + {{:ok, :catch}, [target]} -> + with {:ok, successors} <- + do_simulate_block_stack_depths( + instructions, + size, + idx + 1, + next_entry, + next_depth + ) do + {:ok, [{target, next_depth} | successors]} + end + + {{:ok, name}, [target]} when name in [:goto, :goto8, :goto16] -> + {:ok, [{target, next_depth}]} + + {{:ok, name}, [_argc]} when name in [:tail_call, :tail_call_method] -> + {:ok, []} + + {{:ok, :return}, []} -> + {:ok, []} + + {{:ok, :return_undef}, []} -> + {:ok, []} + + {{:ok, :throw}, []} -> + {:ok, []} + + {{:ok, :throw_error}, _} -> + {:ok, []} + + {{:ok, :return_async}, []} -> + {:ok, []} + + {{:ok, :initial_yield}, []} -> + {:ok, []} + + {{:ok, :yield}, []} -> + {:ok, []} + + {{:ok, :yield_star}, []} -> + {:ok, []} + + {{:ok, :async_yield_star}, []} -> + {:ok, []} + + {{:ok, :gosub}, [_target]} -> + {:ok, []} + + {{:ok, :ret}, []} -> + {:ok, []} + + _ -> + do_simulate_block_stack_depths(instructions, size, idx + 1, next_entry, next_depth) + end + end + end + + defp apply_stack_effect(op, args, depth) do + with {:ok, pop_count, push_count} <- stack_effect(op, args), + true <- depth >= pop_count or {:error, {:stack_underflow_at, op, args, depth, pop_count}} do + {:ok, depth - pop_count + push_count} + end + end +end diff --git a/lib/quickbeam/vm/compiler/analysis/types.ex b/lib/quickbeam/vm/compiler/analysis/types.ex new file mode 100644 index 000000000..7253ab57f --- /dev/null +++ b/lib/quickbeam/vm/compiler/analysis/types.ex @@ -0,0 +1,1074 @@ +defmodule QuickBEAM.VM.Compiler.Analysis.Types do + @moduledoc "Abstract type inference: propagates JS value types through basic blocks to enable guard elision." + + alias QuickBEAM.VM.Bytecode + alias QuickBEAM.VM.Compiler.Analysis.{CFG, Stack} + alias QuickBEAM.VM.Compiler.Lowering.Types, as: LoweringTypes + alias QuickBEAM.VM.Decoder + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Heap.Caches + alias QuickBEAM.VM.PredefinedAtoms + + @line 1 + + @doc "Helper for abstract type inference: propagates js value types through basic blocks to enable guard elision." + def infer_block_entry_types(fun, instructions, entries, stack_depths) do + slot_count = fun.arg_count + fun.var_count + initial = initial_type_state(fun, slot_count, Map.get(stack_depths, 0, 0)) + t = List.to_tuple(instructions) + size = tuple_size(t) + atoms = Heap.get_fn_atoms(fun.byte_code) + + iterate_block_entry_types( + t, + size, + entries, + stack_depths, + fun.constants, + atoms, + %{0 => initial}, + :unknown, + 0 + ) + end + + @doc "Helper for abstract type inference: propagates js value types through basic blocks to enable guard elision." + def function_type(%Bytecode.Function{} = fun) do + stack = Caches.get_function_type_stack() + + if MapSet.member?(stack, fun.byte_code) do + :function + else + Caches.put_function_type_stack(MapSet.put(stack, fun.byte_code)) + + try do + case Decoder.decode(fun.byte_code, fun.arg_count) do + {:ok, instructions} -> + entries = CFG.block_entries(instructions) + t = List.to_tuple(instructions) + size = tuple_size(t) + + atoms = Heap.get_fn_atoms(fun.byte_code) + + with {:ok, stack_depths} <- Stack.infer_block_stack_depths(instructions, entries), + {:ok, {_entry_types, return_type}} <- + iterate_block_entry_types( + t, + size, + entries, + stack_depths, + fun.constants, + atoms, + %{ + 0 => + initial_type_state( + fun, + fun.arg_count + fun.var_count, + Map.get(stack_depths, 0, 0) + ) + }, + :unknown, + 0 + ) do + {:function, return_type} + else + _ -> :function + end + + _ -> + :function + end + after + if MapSet.size(stack) == 0, + do: Caches.delete_function_type_stack(), + else: Caches.put_function_type_stack(stack) + end + end + end + + defp iterate_block_entry_types( + instructions, + size, + entries, + stack_depths, + constants, + atoms, + entry_types, + return_type, + iteration + ) + when iteration < 12 do + with {:ok, {next_entry_types, next_return_type}} <- + walk_block_entry_types( + instructions, + size, + entries, + stack_depths, + constants, + atoms, + entry_types, + return_type + ) do + if next_entry_types == entry_types and next_return_type == return_type do + {:ok, {next_entry_types, next_return_type}} + else + iterate_block_entry_types( + instructions, + size, + entries, + stack_depths, + constants, + atoms, + next_entry_types, + next_return_type, + iteration + 1 + ) + end + end + end + + defp iterate_block_entry_types( + _instructions, + _size, + _entries, + _stack_depths, + _constants, + _atoms, + _entry_types, + _return_type, + iteration + ) do + {:error, {:type_inference_did_not_converge, iteration}} + end + + defp walk_block_entry_types( + instructions, + size, + entries, + stack_depths, + constants, + atoms, + entry_types, + return_type + ) do + Enum.reduce_while(entries, {:ok, {entry_types, return_type}}, fn start, {:ok, acc} -> + case Map.fetch(elem(acc, 0), start) do + :error -> + {:cont, {:ok, acc}} + + {:ok, state} -> + next = CFG.next_entry(entries, start) + + case simulate_block_types( + instructions, + size, + entries, + stack_depths, + constants, + atoms, + start, + next, + state, + elem(acc, 1) + ) do + {:ok, {updates, block_return_type}} -> + merged_entry_types = merge_block_updates(elem(acc, 0), updates) + merged_return_type = join_type(elem(acc, 1), block_return_type) + {:cont, {:ok, {merged_entry_types, merged_return_type}}} + + {:error, _} = error -> + {:halt, error} + end + end + end) + end + + defp simulate_block_types( + _instructions, + size, + entries, + stack_depths, + _constants, + _atoms, + idx, + next_entry, + state, + return_type + ) + when idx >= size do + {:error, + {:missing_type_terminator, idx, next_entry, state, return_type, entries, stack_depths}} + end + + defp simulate_block_types( + _instructions, + _size, + _entries, + _stack_depths, + _constants, + _atoms, + idx, + idx, + state, + return_type + ) do + {:ok, {[{idx, state}], return_type}} + end + + defp simulate_block_types( + instructions, + size, + entries, + stack_depths, + constants, + atoms, + idx, + next_entry, + state, + return_type + ) do + instruction = elem(instructions, idx) + + with {:ok, result} <- transfer_types(instruction, state, return_type, constants, atoms) do + case result do + {:continue, next_state, next_return_type} -> + simulate_block_types( + instructions, + size, + entries, + stack_depths, + constants, + atoms, + idx + 1, + next_entry, + next_state, + next_return_type + ) + + {:catch, target, next_state, next_return_type} -> + with {:ok, {updates, final_return_type}} <- + simulate_block_types( + instructions, + size, + entries, + stack_depths, + constants, + atoms, + idx + 1, + next_entry, + next_state, + next_return_type + ) do + {:ok, {[{target, next_state} | updates], final_return_type}} + end + + {:branch, target, next_state, next_return_type} -> + if is_nil(next_entry) do + {:error, {:missing_fallthrough_type_block, target, idx}} + else + {:ok, {[{target, next_state}, {next_entry, next_state}], next_return_type}} + end + + {:goto, target, next_state, next_return_type} -> + {:ok, {[{target, next_state}], next_return_type}} + + {:halt, next_return_type} -> + {:ok, {[], next_return_type}} + end + end + end + + defp transfer_types({op, args}, state, return_type, constants, atoms) do + case {CFG.opcode_name(op), args} do + {{:ok, name}, [value]} when name in [:push_i32, :push_i16, :push_i8] -> + {:ok, {:continue, push_type(state, {:const, {:integer, @line, value}}), return_type}} + + {{:ok, :push_minus1}, _} -> + {:ok, {:continue, push_type(state, {:const, {:integer, @line, -1}}), return_type}} + + {{:ok, name}, _} + when name in [:push_0, :push_1, :push_2, :push_3, :push_4, :push_5, :push_6, :push_7] -> + int_val = + case name do + :push_0 -> 0 + :push_1 -> 1 + :push_2 -> 2 + :push_3 -> 3 + :push_4 -> 4 + :push_5 -> 5 + :push_6 -> 6 + :push_7 -> 7 + end + + {:ok, {:continue, push_type(state, {:const, {:integer, @line, int_val}}), return_type}} + + {{:ok, name}, _} when name in [:push_true, :push_false] -> + bool_val = name == :push_true + {:ok, {:continue, push_type(state, {:const, {:atom, @line, bool_val}}), return_type}} + + {{:ok, :null}, _} -> + {:ok, {:continue, push_type(state, {:const, {:atom, @line, nil}}), return_type}} + + {{:ok, :undefined}, _} -> + {:ok, {:continue, push_type(state, {:const, {:atom, @line, :undefined}}), return_type}} + + {{:ok, :push_empty_string}, _} -> + {:ok, {:continue, push_type(state, {:const, {:bin, @line, []}}), return_type}} + + {{:ok, :object}, _} -> + {:ok, {:continue, push_type(state, {:shaped_object, %{}, %{}}), return_type}} + + {{:ok, :array_from}, [argc]} -> + with {:ok, state} <- pop_types(state, argc) do + {:ok, {:continue, push_type(state, :object), return_type}} + end + + {{:ok, name}, [const_idx]} when name in [:push_const, :push_const8] -> + {:ok, {:continue, push_type(state, constant_type(constants, const_idx)), return_type}} + + {{:ok, name}, [const_idx]} when name in [:fclosure, :fclosure8] -> + {:ok, {:continue, push_type(state, closure_type(constants, const_idx)), return_type}} + + {{:ok, :special_object}, [type]} -> + {:ok, {:continue, push_type(state, special_object_type(type)), return_type}} + + {{:ok, name}, [slot_idx]} + when name in [ + :get_arg, + :get_arg0, + :get_arg1, + :get_arg2, + :get_arg3, + :get_loc, + :get_loc0, + :get_loc1, + :get_loc2, + :get_loc3, + :get_loc8, + :get_loc_check + ] -> + {:ok, {:continue, push_type(state, slot_type(state, slot_idx)), return_type}} + + {{:ok, :get_loc0_loc1}, [slot0, slot1]} -> + {:ok, + {:continue, + state + |> push_type(slot_type(state, slot0)) + |> push_type(slot_type(state, slot1)), return_type}} + + {{:ok, name}, [_idx]} + when name in [ + :get_var_ref, + :get_var_ref0, + :get_var_ref1, + :get_var_ref2, + :get_var_ref3, + :get_var_ref_check + ] -> + {:ok, {:continue, push_type(state, :unknown), return_type}} + + {{:ok, :set_loc_uninitialized}, [slot_idx]} -> + {:ok, + {:continue, state |> put_slot_type(slot_idx, :unknown) |> put_slot_init(slot_idx, false), + return_type}} + + {{:ok, :define_var}, [_atom_idx, _scope]} -> + {:ok, {:continue, state, return_type}} + + {{:ok, :check_define_var}, [_atom_idx, _scope]} -> + {:ok, {:continue, state, return_type}} + + {{:ok, :put_var}, [_atom_idx]} -> + with {:ok, _type, state} <- pop_type(state) do + {:ok, {:continue, state, return_type}} + end + + {{:ok, :put_var_init}, [_atom_idx]} -> + with {:ok, _type, state} <- pop_type(state) do + {:ok, {:continue, state, return_type}} + end + + {{:ok, :define_func}, [_atom_idx, _flags]} -> + with {:ok, _type, state} <- pop_type(state) do + {:ok, {:continue, state, return_type}} + end + + {{:ok, name}, [slot_idx]} + when name in [ + :put_loc, + :put_loc0, + :put_loc1, + :put_loc2, + :put_loc3, + :put_loc8, + :put_arg, + :put_arg0, + :put_arg1, + :put_arg2, + :put_arg3, + :put_loc_check, + :put_loc_check_init + ] -> + with {:ok, type, state} <- pop_type(state) do + slot_type = normalize_slot_type(type) + + {:ok, + {:continue, + state |> put_slot_type(slot_idx, slot_type) |> put_slot_init(slot_idx, true), + return_type}} + end + + {{:ok, name}, [_idx]} + when name in [ + :put_var_ref, + :put_var_ref0, + :put_var_ref1, + :put_var_ref2, + :put_var_ref3, + :put_var_ref_check, + :put_var_ref_check_init + ] -> + with {:ok, _type, state} <- pop_type(state) do + {:ok, {:continue, state, return_type}} + end + + {{:ok, name}, [slot_idx]} + when name in [ + :set_loc, + :set_loc0, + :set_loc1, + :set_loc2, + :set_loc3, + :set_loc8, + :set_arg, + :set_arg0, + :set_arg1, + :set_arg2, + :set_arg3 + ] -> + with {:ok, type, state} <- pop_type(state) do + slot_type = normalize_slot_type(type) + + next_state = + state + |> put_slot_type(slot_idx, slot_type) + |> put_slot_init(slot_idx, true) + |> push_type(type) + + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, name}, [_idx]} + when name in [:set_var_ref, :set_var_ref0, :set_var_ref1, :set_var_ref2, :set_var_ref3] -> + with {:ok, _type, state} <- pop_type(state) do + {:ok, {:continue, push_type(state, :unknown), return_type}} + end + + {{:ok, :dup}, _} -> + with {:ok, type, state} <- pop_type(state) do + next_state = state |> push_type(type) |> push_type(type) + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, :regexp}, _} -> + with {:ok, _pattern_type, state} <- pop_type(state), + {:ok, _flags_type, state} <- pop_type(state) do + {:ok, {:continue, push_type(state, :unknown), return_type}} + end + + {{:ok, :dup2}, _} -> + with {:ok, first, state} <- pop_type(state), + {:ok, second, state} <- pop_type(state) do + next_state = + state + |> push_type(second) + |> push_type(first) + |> push_type(second) + |> push_type(first) + + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, :insert2}, _} -> + with {:ok, first, state} <- pop_type(state), + {:ok, second, state} <- pop_type(state) do + next_state = + state + |> push_type(first) + |> push_type(second) + |> push_type(first) + + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, :insert3}, _} -> + with {:ok, first, state} <- pop_type(state), + {:ok, second, state} <- pop_type(state), + {:ok, third, state} <- pop_type(state) do + next_state = + state + |> push_type(first) + |> push_type(third) + |> push_type(second) + |> push_type(first) + + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, :drop}, _} -> + with {:ok, _type, state} <- pop_type(state) do + {:ok, {:continue, state, return_type}} + end + + {{:ok, :swap}, _} -> + with {:ok, first, state} <- pop_type(state), + {:ok, second, state} <- pop_type(state) do + {:ok, {:continue, state |> push_type(first) |> push_type(second), return_type}} + end + + {{:ok, :perm3}, _} -> + with {:ok, first, state} <- pop_type(state), + {:ok, second, state} <- pop_type(state), + {:ok, third, state} <- pop_type(state) do + next_state = + state + |> push_type(second) + |> push_type(third) + |> push_type(first) + + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, :nip_catch}, _} -> + with {:ok, value_type, state} <- pop_type(state), + {:ok, _catch_type, state} <- pop_type(state) do + {:ok, {:continue, push_type(state, value_type), return_type}} + end + + {{:ok, name}, _} + when name in [ + :neg, + :plus, + :typeof, + :delete, + :not, + :lnot, + :is_undefined, + :is_null, + :typeof_is_undefined, + :typeof_is_function, + :is_undefined_or_null + ] -> + transfer_unary_type(name, state, return_type) + + {{:ok, name}, _} + when name in [ + :add, + :sub, + :mul, + :div, + :mod, + :pow, + :lt, + :lte, + :gt, + :gte, + :eq, + :neq, + :strict_eq, + :strict_neq, + :shl, + :sar, + :shr, + :band, + :bor, + :bxor, + :instanceof, + :in + ] -> + transfer_binaryish_type(name, state, return_type) + + {{:ok, name}, _} when name in [:inc, :dec] -> + with {:ok, type, state} <- pop_type(state) do + next_type = if type == :integer, do: :integer, else: :number + {:ok, {:continue, push_type(state, next_type), return_type}} + end + + {{:ok, name}, _} when name in [:post_inc, :post_dec] -> + with {:ok, type, state} <- pop_type(state) do + next_type = if type == :integer, do: :integer, else: :number + next_state = state |> push_type(next_type) |> push_type(next_type) + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, :get_length}, _} -> + with {:ok, _type, state} <- pop_type(state) do + {:ok, {:continue, push_type(state, :integer), return_type}} + end + + {{:ok, :get_field}, _} -> + with {:ok, _obj_type, state} <- pop_type(state) do + {:ok, {:continue, push_type(state, :unknown), return_type}} + end + + {{:ok, :get_field2}, _} -> + with {:ok, obj_type, state} <- pop_type(state) do + next_state = state |> push_type(obj_type) |> push_type(:unknown) + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, name}, _} when name in [:get_array_el, :get_super_value, :get_private_field] -> + with {:ok, _idx_type, state} <- pop_type(state), + {:ok, _obj_type, state} <- pop_type(state) do + {:ok, {:continue, push_type(state, :unknown), return_type}} + end + + {{:ok, :get_array_el2}, _} -> + with {:ok, _idx_type, state} <- pop_type(state), + {:ok, obj_type, state} <- pop_type(state) do + next_state = state |> push_type(obj_type) |> push_type(:unknown) + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, name}, [argc]} when name in [:call, :call0, :call1, :call2, :call3] -> + with {:ok, state} <- pop_types(state, argc), + {:ok, fun_type, state} <- pop_type(state) do + {:ok, + {:continue, push_type(state, invoke_result_type(fun_type, return_type)), return_type}} + end + + {{:ok, :tail_call}, [argc]} -> + with {:ok, state} <- pop_types(state, argc), + {:ok, fun_type, _state} <- pop_type(state) do + {:ok, {:halt, join_type(return_type, invoke_result_type(fun_type, return_type))}} + end + + {{:ok, :call_method}, [argc]} -> + with {:ok, state} <- pop_types(state, argc), + {:ok, fun_type, state} <- pop_type(state), + {:ok, _obj_type, state} <- pop_type(state) do + {:ok, + {:continue, push_type(state, invoke_result_type(fun_type, return_type)), return_type}} + end + + {{:ok, :tail_call_method}, [argc]} -> + with {:ok, state} <- pop_types(state, argc), + {:ok, fun_type, state} <- pop_type(state), + {:ok, _obj_type, _state} <- pop_type(state) do + {:ok, {:halt, join_type(return_type, invoke_result_type(fun_type, return_type))}} + end + + {{:ok, :call_constructor}, [argc]} -> + with {:ok, state} <- pop_types(state, argc), + {:ok, _new_target_type, state} <- pop_type(state), + {:ok, _ctor_type, state} <- pop_type(state) do + {:ok, {:continue, push_type(state, :object), return_type}} + end + + {{:ok, :append}, _} -> + with {:ok, _obj_type, state} <- pop_type(state), + {:ok, _idx_type, state} <- pop_type(state), + {:ok, _arr_type, state} <- pop_type(state) do + next_state = state |> push_type(:object) |> push_type(:number) + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, :copy_data_properties}, _} -> + {:ok, {:continue, state, return_type}} + + {{:ok, :define_field}, [atom_idx]} -> + with {:ok, val_type, state} <- pop_type(state), + {:ok, obj_type, state} <- pop_type(state) do + result_type = + case {obj_type, val_type} do + {{:shaped_object, offsets, value_map}, {:const, val_expr}} -> + if LoweringTypes.pure_expr?(val_expr) do + key_str = resolve_atom_name(atom_idx, atoms) + + if is_binary(key_str) do + new_offset = map_size(offsets) + + {:shaped_object, Map.put(offsets, key_str, new_offset), + Map.put(value_map, key_str, val_expr)} + else + :object + end + else + :object + end + + _ -> + :object + end + + {:ok, {:continue, push_type(state, result_type), return_type}} + end + + {{:ok, name}, _} + when name in [ + :put_field, + :put_array_el, + :put_super_value, + :put_private_field, + :define_private_field, + :check_brand, + :add_brand, + :set_home_object + ] -> + with {:ok, state} <- apply_generic_stack_effect(state, op, args) do + {:ok, {:continue, state, return_type}} + end + + {{:ok, name}, _} when name in [:define_method, :define_method_computed] -> + with {:ok, state} <- apply_generic_stack_effect(state, op, args) do + {:ok, {:continue, push_type(state, :object), return_type}} + end + + {{:ok, :define_class}, _} -> + with {:ok, _ctor_type, state} <- pop_type(state), + {:ok, _parent_type, state} <- pop_type(state) do + next_state = state |> push_type(:function) |> push_type(:object) + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, :set_name}, _} -> + with {:ok, _fun_type, state} <- pop_type(state) do + {:ok, {:continue, push_type(state, :function), return_type}} + end + + {{:ok, :set_name_computed}, _} -> + with {:ok, fun_type, state} <- pop_type(state), + {:ok, name_type, state} <- pop_type(state) do + next_state = state |> push_type(name_type) |> push_type(join_type(fun_type, :function)) + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, :push_this}, _} -> + {:ok, {:continue, push_type(state, :object), return_type}} + + {{:ok, :push_atom_value}, _} -> + {:ok, {:continue, push_type(state, :string), return_type}} + + {{:ok, :close_loc}, _} -> + {:ok, {:continue, state, return_type}} + + {{:ok, :for_in_start}, _} -> + with {:ok, _src_type, state} <- pop_type(state) do + {:ok, {:continue, push_type(state, :unknown), return_type}} + end + + {{:ok, :for_in_next}, _} -> + case state.stack_types do + [iter_type | rest] -> + next_state = %{state | stack_types: [iter_type | rest]} + next_state = next_state |> push_type(:unknown) |> push_type(:boolean) + {:ok, {:continue, next_state, return_type}} + + _ -> + {:error, :stack_underflow} + end + + {{:ok, :for_of_start}, _} -> + with {:ok, _src_type, state} <- pop_type(state) do + next_state = state |> push_type(:object) |> push_type(:function) |> push_type(:integer) + {:ok, {:continue, next_state, return_type}} + end + + {{:ok, :for_of_next}, _} -> + case state.stack_types do + [catch_type, next_type, _iter_type | rest] -> + next_state = %{state | stack_types: [catch_type, next_type, :object | rest]} + next_state = next_state |> push_type(:unknown) |> push_type(:boolean) + {:ok, {:continue, next_state, return_type}} + + _ -> + {:error, :stack_underflow} + end + + {{:ok, :iterator_close}, _} -> + with {:ok, _catch_type, state} <- pop_type(state), + {:ok, _next_type, state} <- pop_type(state), + {:ok, _iter_type, state} <- pop_type(state) do + {:ok, {:continue, state, return_type}} + end + + {{:ok, :catch}, [target]} -> + with {:ok, state} <- apply_generic_stack_effect(state, op, args) do + {:ok, {:catch, target, state, return_type}} + end + + {{:ok, name}, [target]} when name in [:if_false, :if_false8, :if_true, :if_true8] -> + with {:ok, _cond_type, state} <- pop_type(state) do + {:ok, {:branch, target, state, return_type}} + end + + {{:ok, name}, [target]} when name in [:goto, :goto8, :goto16] -> + {:ok, {:goto, target, state, return_type}} + + {{:ok, :return}, _} -> + with {:ok, type, _state} <- pop_type(state) do + {:ok, {:halt, join_type(return_type, type)}} + end + + {{:ok, :return_undef}, _} -> + {:ok, {:halt, join_type(return_type, :undefined)}} + + {{:ok, name}, _} when name in [:throw, :throw_error] -> + {:ok, {:halt, return_type}} + + {{:ok, :return_async}, _} -> + {:ok, {:halt, return_type}} + + {{:ok, name}, _} + when name in [:initial_yield, :yield, :yield_star, :async_yield_star, :gosub, :ret] -> + {:ok, {:halt, return_type}} + + {{:ok, :nop}, _} -> + {:ok, {:continue, state, return_type}} + + _ -> + with {:ok, state} <- apply_generic_stack_effect(state, op, args) do + {:ok, {:continue, state, return_type}} + end + end + end + + defp transfer_unary_type(name, state, return_type) do + with {:ok, type, state} <- pop_type(state) do + result_type = unary_result_type(name, type) + {:ok, {:continue, push_type(state, result_type), return_type}} + end + end + + defp transfer_binaryish_type(name, state, return_type) do + with {:ok, right_type, state} <- pop_type(state), + {:ok, left_type, state} <- pop_type(state) do + result_type = binary_result_type(name, left_type, right_type) + {:ok, {:continue, push_type(state, result_type), return_type}} + end + end + + defp initial_type_state(fun, slot_count, stack_depth) do + slot_types = + if slot_count == 0, + do: %{}, + else: Map.new(0..(slot_count - 1), fn idx -> {idx, :unknown} end) + + slot_inits = + if slot_count == 0, + do: %{}, + else: Map.new(0..(slot_count - 1), fn idx -> {idx, initially_initialized?(fun, idx)} end) + + %{ + slot_types: slot_types, + slot_inits: slot_inits, + stack_types: List.duplicate(:unknown, stack_depth) + } + end + + defp merge_block_updates(entry_types, updates) do + Enum.reduce(updates, entry_types, fn {target, state}, acc -> + Map.update(acc, target, state, &merge_type_state(&1, state)) + end) + end + + defp merge_type_state(left, right) do + %{ + slot_types: + Map.merge(left.slot_types, right.slot_types, fn _idx, left_type, right_type -> + join_type(left_type, right_type) + end), + slot_inits: + Map.merge(left.slot_inits, right.slot_inits, fn _idx, left_init, right_init -> + left_init and right_init + end), + stack_types: merge_stack_types(left.stack_types, right.stack_types) + } + end + + defp merge_stack_types(left, right) when length(left) == length(right), + do: Enum.zip_with(left, right, &join_type/2) + + defp merge_stack_types(left, _right), do: Enum.map(left, fn _ -> :unknown end) + + defp put_slot_type(state, idx, type), + do: %{state | slot_types: Map.put(state.slot_types, idx, type)} + + defp put_slot_init(state, idx, initialized), + do: %{state | slot_inits: Map.put(state.slot_inits, idx, initialized)} + + defp slot_type(state, idx), do: Map.get(state.slot_types, idx, :unknown) + defp push_type(state, type), do: %{state | stack_types: [type | state.stack_types]} + + defp pop_type(%{stack_types: [type | rest]} = state), + do: {:ok, type, %{state | stack_types: rest}} + + defp pop_type(_state), do: {:error, :stack_underflow} + + defp pop_types(state, 0), do: {:ok, state} + + defp pop_types(state, count) when count > 0 do + with {:ok, _type, state} <- pop_type(state) do + pop_types(state, count - 1) + end + end + + defp apply_generic_stack_effect(state, op, args) do + with {:ok, pop_count, push_count} <- Stack.stack_effect(op, args), + {:ok, state} <- pop_types(state, pop_count) do + next_state = + if push_count == 0 do + state + else + Enum.reduce(1..push_count, state, fn _, acc -> push_type(acc, :unknown) end) + end + + {:ok, next_state} + end + end + + defp unary_result_type(:neg, type) when type in [:integer, :number], do: type + defp unary_result_type(:plus, type) when type in [:integer, :number], do: type + defp unary_result_type(:typeof, _type), do: :string + defp unary_result_type(:delete, _type), do: :boolean + defp unary_result_type(:not, _type), do: :integer + defp unary_result_type(:lnot, _type), do: :boolean + defp unary_result_type(:is_undefined, _type), do: :boolean + defp unary_result_type(:is_null, _type), do: :boolean + defp unary_result_type(_name, _type), do: :unknown + + defp binary_result_type(:add, :integer, :integer), do: :integer + defp binary_result_type(:add, :string, :string), do: :string + + defp binary_result_type(:add, left, right) + when left in [:integer, :number] and right in [:integer, :number], + do: :number + + defp binary_result_type(name, left, right) + when name in [:sub, :mul] and left == :integer and right == :integer, + do: :integer + + defp binary_result_type(name, left, right) + when name in [:sub, :mul, :div, :mod, :pow] and left in [:integer, :number] and + right in [:integer, :number], + do: :number + + defp binary_result_type(name, left, right) + when name in [:lt, :lte, :gt, :gte] and left in [:integer, :number] and + right in [:integer, :number], + do: :boolean + + defp binary_result_type(name, _left, _right) + when name in [ + :lt, + :lte, + :gt, + :gte, + :eq, + :neq, + :strict_eq, + :strict_neq, + :instanceof, + :in, + :typeof_is_undefined, + :typeof_is_function, + :is_undefined_or_null + ], + do: :boolean + + defp binary_result_type(name, _left, _right) + when name in [:shl, :sar, :shr, :band, :bor, :bxor], + do: :integer + + defp binary_result_type(_name, _left, _right), do: :unknown + + defp invoke_result_type(:self_fun, return_type), do: return_type + defp invoke_result_type({:function, type}, _return_type), do: type + defp invoke_result_type(_fun_type, _return_type), do: :unknown + + defp constant_type(constants, idx) do + case Enum.at(constants, idx) do + value when is_integer(value) -> :integer + value when is_float(value) -> :number + value when is_boolean(value) -> :boolean + value when is_binary(value) -> :string + nil -> :null + :undefined -> :undefined + %Bytecode.Function{} = fun -> function_type(fun) + _ -> :unknown + end + end + + defp closure_type(constants, idx) do + case Enum.at(constants, idx) do + %Bytecode.Function{} = fun -> function_type(fun) + _ -> :function + end + end + + defp special_object_type(2), do: :self_fun + defp special_object_type(3), do: :function + defp special_object_type(type) when type in [0, 1, 5, 6, 7], do: :object + defp special_object_type(_type), do: :unknown + + defp join_type(:unknown, other), do: other + defp join_type(other, :unknown), do: other + defp join_type(type, type), do: type + defp join_type(:integer, :number), do: :number + defp join_type(:number, :integer), do: :number + defp join_type({:const, _}, :integer), do: :integer + defp join_type(:integer, {:const, _}), do: :integer + defp join_type({:const, _}, :number), do: :number + defp join_type(:number, {:const, _}), do: :number + defp join_type({:const, {:integer, _, _}}, {:const, {:integer, _, _}}), do: :integer + + defp join_type({:const, {:atom, _, v}}, {:const, {:atom, _, v}}) when is_boolean(v), + do: :boolean + + defp join_type({:const, {:bin, _, _}}, {:const, {:bin, _, _}}), do: :string + defp join_type({:const, _}, _other), do: :unknown + defp join_type(_other, {:const, _}), do: :unknown + + defp join_type({:shaped_object, offsets, vm}, {:shaped_object, offsets, vm}), + do: {:shaped_object, offsets, vm} + + defp join_type({:shaped_object, _, _}, {:shaped_object, _, _}), do: :object + defp join_type({:shaped_object, _, _}, :object), do: :object + defp join_type(:object, {:shaped_object, _, _}), do: :object + defp join_type(:self_fun, :function), do: :function + defp join_type(:function, :self_fun), do: :function + defp join_type({:function, left}, {:function, right}), do: {:function, join_type(left, right)} + defp join_type({:function, type}, :function), do: {:function, type} + defp join_type(:function, {:function, type}), do: {:function, type} + defp join_type(:self_fun, {:function, type}), do: {:function, type} + defp join_type({:function, type}, :self_fun), do: {:function, type} + defp join_type(_left, _right), do: :unknown + + defp normalize_slot_type({:const, {:integer, _, _}}), do: :integer + defp normalize_slot_type({:const, {:float, _, _}}), do: :number + defp normalize_slot_type({:const, {:atom, _, true}}), do: :boolean + defp normalize_slot_type({:const, {:atom, _, false}}), do: :boolean + defp normalize_slot_type({:const, {:atom, _, :undefined}}), do: :undefined + defp normalize_slot_type({:const, {:atom, _, nil}}), do: :null + defp normalize_slot_type({:const, {:bin, _, _}}), do: :string + defp normalize_slot_type({:const, _}), do: :unknown + defp normalize_slot_type(type), do: type + + defp resolve_atom_name(name, _atoms) when is_binary(name), do: name + defp resolve_atom_name({:predefined, idx}, _atoms), do: PredefinedAtoms.lookup(idx) + + defp resolve_atom_name(idx, atoms) + when is_integer(idx) and is_tuple(atoms) and idx >= 0 and idx < tuple_size(atoms), + do: elem(atoms, idx) + + defp resolve_atom_name(_name, _atoms), do: nil + + defp initially_initialized?(fun, idx) when idx < fun.arg_count, do: true + + defp initially_initialized?(fun, idx) do + case Enum.at(fun.locals, idx) do + %{is_lexical: true} -> false + _ -> true + end + end +end diff --git a/lib/quickbeam/vm/compiler/diagnostics.ex b/lib/quickbeam/vm/compiler/diagnostics.ex new file mode 100644 index 000000000..7a8ad77a9 --- /dev/null +++ b/lib/quickbeam/vm/compiler/diagnostics.ex @@ -0,0 +1,157 @@ +defmodule QuickBEAM.VM.Compiler.Diagnostics do + @moduledoc "Introspection tools for compiler mode: capability checking, helper call analysis." + + alias QuickBEAM.VM.{Bytecode, Decoder} + alias QuickBEAM.VM.Compiler + alias QuickBEAM.VM.Compiler.Analysis.CFG + + @unsupported_opcodes [ + :invalid, + :with_get_var, + :with_put_var, + :with_delete_var, + :with_make_ref, + :with_get_ref, + :with_get_ref_undef + ] + + @doc "Check if a function can be compiled. Returns :ok or {:error, reasons}." + def check(%Bytecode.Function{} = fun) do + case Compiler.compile(fun) do + {:ok, _} -> :ok + {:error, _} = error -> error + end + end + + def check(_), do: {:error, :var_refs_not_supported} + + @doc "Explain why a function can/cannot be compiled, with details." + def explain(%Bytecode.Function{} = fun) do + compile_result = Compiler.compile(fun) + + {compilable?, error} = + case compile_result do + {:ok, _} -> {true, nil} + {:error, reason} -> {false, reason} + end + + {opcode_count, all_opcode_names} = + case Decoder.decode(fun.byte_code, fun.arg_count) do + {:ok, instructions} -> + names = + for {op, _args} <- instructions, + match?({:ok, _}, CFG.opcode_name(op)), + do: elem(CFG.opcode_name(op), 1), + uniq: true + + {length(instructions), names} + + _ -> + {0, []} + end + + unsupported = + case error do + {:unsupported_opcode, name} -> [name] + _ -> Enum.filter(all_opcode_names, &known_unsupported?/1) + end + + %{ + compilable?: compilable?, + error: error, + opcode_count: opcode_count, + unsupported_opcodes: unsupported + } + end + + def explain(_), + do: %{ + compilable?: false, + error: :var_refs_not_supported, + opcode_count: 0, + unsupported_opcodes: [] + } + + @doc """ + Analyze a function's compilability without compiling. + + Returns a map with: + - `:compilable?` — whether the function should compile successfully + - `:unsupported_opcodes` — list of `%{pc: integer, opcode: atom}` for unsupported ops + - `:has_var_refs` — whether the function uses captured variable references + - `:opcode_count` — total number of instructions + """ + def capabilities(%Bytecode.Function{} = fun) do + case Decoder.decode(fun.byte_code, fun.arg_count) do + {:ok, instructions} -> + unsupported = + instructions + |> Enum.with_index() + |> Enum.flat_map(fn {{op, _args}, pc} -> + case CFG.opcode_name(op) do + {:ok, name} -> + if name in @unsupported_opcodes, do: [%{pc: pc, opcode: name}], else: [] + + {:error, _} -> + [%{pc: pc, opcode: :unknown}] + end + end) + + has_var_refs = + fun.var_ref_count > 0 and + not Enum.all?(fun.closure_vars, &(&1.closure_type == 0)) + + %{ + compilable?: unsupported == [] and not has_var_refs, + unsupported_opcodes: unsupported, + has_var_refs: has_var_refs, + opcode_count: length(instructions) + } + + {:error, _} -> + %{ + compilable?: false, + unsupported_opcodes: [], + has_var_refs: false, + opcode_count: 0 + } + end + end + + def capabilities(_), + do: %{compilable?: false, unsupported_opcodes: [], has_var_refs: true, opcode_count: 0} + + @doc "Count helper calls in compiled output." + def helper_call_counts(%Bytecode.Function{} = fun) do + case Compiler.disasm(fun) do + {:ok, beam_file} -> + beam_file + |> extract_ext_calls() + |> Enum.frequencies() + + {:error, _} -> + %{} + end + end + + def helper_call_counts(_), do: %{} + + defp extract_ext_calls({:beam_file, _module, _exports, _attributes, _compile_info, code}) do + for {:function, _name, _arity, _label, instructions} <- code, + {op, _argc, {:extfunc, mod, fn_name, arity}} <- instructions, + op in [:call_ext, :call_ext_last, :call_ext_only] do + {mod, fn_name, arity} + end + end + + @with_scope_opcodes [ + :with_get_var, + :with_put_var, + :with_delete_var, + :with_make_ref, + :with_get_ref, + :with_get_ref_undef + ] + + defp known_unsupported?(name), do: name == :invalid or name in @with_scope_opcodes +end diff --git a/lib/quickbeam/vm/compiler/forms.ex b/lib/quickbeam/vm/compiler/forms.ex new file mode 100644 index 000000000..062138acc --- /dev/null +++ b/lib/quickbeam/vm/compiler/forms.ex @@ -0,0 +1,388 @@ +defmodule QuickBEAM.VM.Compiler.Forms do + @moduledoc "Erlang abstract-format form builder: assembles the module, entry, and block function forms for compilation." + + alias QuickBEAM.VM.Compiler.RuntimeHelpers + alias QuickBEAM.VM.Interpreter.Values + alias QuickBEAM.VM.Invocation + + @line 1 + + @doc "Compiles lowered Erlang forms into a loadable module." + def compile_module(module, entry, ctx_entry, fun, arity, slot_count, block_forms) do + forms = [ + {:attribute, @line, :module, module}, + {:attribute, @line, :export, [{entry, arity}, {ctx_entry, arity + 1}]}, + entry_form(entry, ctx_entry, arity), + ctx_entry_form(ctx_entry, arity, slot_count) + | helper_forms(fun) ++ block_forms + ] + + case :compile.forms(forms, [:binary, :return_errors, :return_warnings]) do + {:ok, mod, binary} -> {:ok, mod, binary} + {:ok, mod, binary, _warnings} -> {:ok, mod, binary} + {:error, errors, _warnings} -> {:error, {:compile_failed, errors}} + end + end + + defp entry_form(entry, ctx_entry, arity) do + args = slot_vars(arity) + body = [local_call(ctx_entry, [remote_call(RuntimeHelpers, :entry_ctx, []) | args])] + {:function, @line, entry, arity, [{:clause, @line, args, [], body}]} + end + + defp ctx_entry_form(ctx_entry, arity, slot_count) do + ctx = var("Ctx") + args = [ctx | slot_vars(arity)] + + locals = + if slot_count <= arity, + do: [], + else: Enum.map(arity..(slot_count - 1), fn _ -> atom(:undefined) end) + + capture_cells = + if slot_count == 0, do: [], else: Enum.map(1..slot_count, fn _ -> atom(:undefined) end) + + body = [local_call(block_name(0), [ctx | slot_vars(arity) ++ locals ++ capture_cells])] + + {:function, @line, ctx_entry, arity + 1, [{:clause, @line, args, [], body}]} + end + + defp helper_forms(_fun) do + [ + add_helper(), + guarded_binary_helper(:op_sub, :-, Values, :sub), + number_guarded_binary_helper(:op_mul, :*, Values, :mul), + div_helper(), + number_guarded_binary_helper(:op_lt, :<, Values, :lt), + number_guarded_binary_helper(:op_lte, :"=<", Values, :lte), + number_guarded_binary_helper(:op_gt, :>, Values, :gt), + number_guarded_binary_helper(:op_gte, :>=, Values, :gte), + mod_helper(), + guarded_binary_helper(:op_band, :band, Values, :band), + guarded_binary_helper(:op_bor, :bor, Values, :bor), + guarded_binary_helper(:op_bxor, :bxor, Values, :bxor), + guarded_binary_helper(:op_shl, :bsl, Values, :shl), + guarded_binary_helper(:op_sar, :bsr, Values, :sar), + unary_fallback_helper2(:op_shr, Values, :shr), + eq_helper(), + neq_helper(), + strict_eq_helper(), + strict_neq_helper(), + neg_helper(), + unary_fallback_helper(:op_plus, Values, :to_number), + get_field_inline_helper(), + truthy_inline_helper(), + typeof_inline_helper() + | invoke_var_ref_runtime_helpers() + ] + end + + defp invoke_var_ref_runtime_helpers do + for prefix <- [:op_invoke_var_ref, :op_invoke_var_ref_check], + arity <- [:list, 0, 1, 2, 3] do + invoke_var_ref_runtime_helper(prefix, arity) + end + end + + defp invoke_var_ref_runtime_helper(prefix, :list) do + ctx = var("Ctx") + idx = var("Idx") + args = var("Args") + + {:function, @line, String.to_atom("#{prefix}"), 3, + [ + {:clause, @line, [ctx, idx, args], [], + [ + remote_call(Invocation, :invoke_runtime, [ + ctx, + remote_call(RuntimeHelpers, getter_name(prefix), [ctx, idx]), + args + ]) + ]} + ]} + end + + defp invoke_var_ref_runtime_helper(prefix, argc) when argc in 0..3 do + ctx = var("Ctx") + idx = var("Idx") + args = if argc == 0, do: [], else: Enum.map(1..argc, &var("Arg#{&1}")) + + {:function, @line, String.to_atom("#{prefix}#{argc}"), argc + 2, + [ + {:clause, @line, [ctx, idx | args], [], + [ + remote_call(Invocation, :invoke_runtime, [ + ctx, + remote_call(RuntimeHelpers, getter_name(prefix), [ctx, idx]), + list_expr(args) + ]) + ]} + ]} + end + + defp getter_name(:op_invoke_var_ref), do: :get_var_ref + defp getter_name(:op_invoke_var_ref_check), do: :get_var_ref_check + + defp add_helper do + a = var("A") + b = var("B") + + {:function, @line, :op_add, 2, + [ + {:clause, @line, [a, b], [integer_guards(a, b)], [{:op, @line, :+, a, b}]}, + {:clause, @line, [a, b], [float_guards(a, b)], [{:op, @line, :+, a, b}]}, + {:clause, @line, [a, b], [binary_guards(a, b)], [binary_concat(a, b)]}, + {:clause, @line, [a, b], [], [remote_call(Values, :add, [a, b])]} + ]} + end + + defp guarded_binary_helper(name, op, fallback_mod, fallback_fun) do + a = var("A") + b = var("B") + + {:function, @line, name, 2, + [ + {:clause, @line, [a, b], [integer_guards(a, b)], [{:op, @line, op, a, b}]}, + {:clause, @line, [a, b], [], [remote_call(fallback_mod, fallback_fun, [a, b])]} + ]} + end + + defp number_guarded_binary_helper(name, op, fallback_mod, fallback_fun) do + a = var("A") + b = var("B") + + {:function, @line, name, 2, + [ + {:clause, @line, [a, b], [number_guards(a, b)], [{:op, @line, op, a, b}]}, + {:clause, @line, [a, b], [], [remote_call(fallback_mod, fallback_fun, [a, b])]} + ]} + end + + defp div_helper do + a = var("A") + b = var("B") + + {:function, @line, :op_div, 2, + [ + {:clause, @line, [a, b], [number_nonzero_guards(a, b)], [{:op, @line, :/, a, b}]}, + {:clause, @line, [a, b], [], [remote_call(Values, :js_div, [a, b])]} + ]} + end + + defp mod_helper do + a = var("A") + b = var("B") + + {:function, @line, :op_mod, 2, + [ + {:clause, @line, [a, b], [integer_nonzero_guards(a, b)], [{:op, @line, :rem, a, b}]}, + {:clause, @line, [a, b], [], [remote_call(Values, :mod, [a, b])]} + ]} + end + + defp neg_helper do + a = var("A") + + {:function, @line, :op_neg, 1, + [ + {:clause, @line, [a], [[integer_guard(a)]], [{:op, @line, :-, a}]}, + {:clause, @line, [a], [[float_guard(a)]], [{:op, @line, :-, a}]}, + {:clause, @line, [a], [], [remote_call(Values, :neg, [a])]} + ]} + end + + defp unary_fallback_helper(name, fallback_mod, fallback_fun) do + a = var("A") + + {:function, @line, name, 1, + [ + {:clause, @line, [a], [[integer_guard(a)]], [a]}, + {:clause, @line, [a], [], [remote_call(fallback_mod, fallback_fun, [a])]} + ]} + end + + defp unary_fallback_helper2(name, fallback_mod, fallback_fun) do + a = var("A") + b = var("B") + + {:function, @line, name, 2, + [ + {:clause, @line, [a, b], [], [remote_call(fallback_mod, fallback_fun, [a, b])]} + ]} + end + + defp eq_helper do + a = var("A") + b = var("B") + + same = var("Same") + + {:function, @line, :op_eq, 2, + [ + {:clause, @line, [same, same], [], [{:atom, @line, true}]}, + {:clause, @line, [a, b], [number_guards(a, b)], [{:op, @line, :==, a, b}]}, + {:clause, @line, [a, b], + [ + [ + {:op, @line, :andalso, {:call, @line, {:atom, @line, :is_binary}, [a]}, + {:call, @line, {:atom, @line, :is_binary}, [b]}} + ] + ], [{:op, @line, :==, a, b}]}, + {:clause, @line, [a, b], [], [remote_call(Values, :eq, [a, b])]} + ]} + end + + defp neq_helper do + a = var("A") + b = var("B") + + {:function, @line, :op_neq, 2, + [ + {:clause, @line, [a, b], [], [{:op, @line, :not, local_call(:op_eq, [a, b])}]} + ]} + end + + defp strict_eq_helper do + a = var("A") + b = var("B") + + {:function, @line, :op_strict_eq, 2, + [ + {:clause, @line, [a, b], [number_guards(a, b)], [{:op, @line, :==, a, b}]}, + {:clause, @line, [a, b], [], [remote_call(Values, :strict_eq, [a, b])]} + ]} + end + + defp strict_neq_helper do + a = var("A") + b = var("B") + + {:function, @line, :op_strict_neq, 2, + [ + {:clause, @line, [a, b], [], [{:op, @line, :not, local_call(:op_strict_eq, [a, b])}]} + ]} + end + + defp integer_guards(a, b), do: [integer_guard(a), integer_guard(b)] + defp number_guards(a, b), do: [number_guard(a), number_guard(b)] + defp float_guards(a, b), do: [float_guard(a), float_guard(b)] + defp binary_guards(a, b), do: [binary_guard(a), binary_guard(b)] + + defp number_nonzero_guards(a, b), + do: [number_guard(a), number_guard(b), nonzero_guard(b)] + + defp integer_nonzero_guards(a, b), + do: [integer_guard(a), integer_guard(b), nonzero_guard(b)] + + defp integer_guard(expr), do: {:call, @line, {:atom, @line, :is_integer}, [expr]} + defp number_guard(expr), do: {:call, @line, {:atom, @line, :is_number}, [expr]} + defp float_guard(expr), do: {:call, @line, {:atom, @line, :is_float}, [expr]} + defp binary_guard(expr), do: {:call, @line, {:atom, @line, :is_binary}, [expr]} + + defp nonzero_guard(expr), + do: {:op, @line, :"/=", expr, {:integer, @line, 0}} + + defp block_name(idx), do: String.to_atom("block_#{idx}") + defp slot_var(idx), do: var("Slot#{idx}") + defp slot_vars(0), do: [] + defp slot_vars(count), do: Enum.map(0..(count - 1), &slot_var/1) + defp var(name) when is_binary(name), do: {:var, @line, String.to_atom(name)} + defp atom(value), do: {:atom, @line, value} + + defp remote_call(mod, fun, args) do + {:call, @line, {:remote, @line, {:atom, @line, mod}, {:atom, @line, fun}}, args} + end + + defp binary_concat(left, right) do + {:bin, @line, + [ + {:bin_element, @line, left, :default, [:binary]}, + {:bin_element, @line, right, :default, [:binary]} + ]} + end + + defp get_field_inline_helper do + _obj = var("Obj") + key = var("Key") + id = var("Id") + offsets = var("Offsets") + vals = var("Vals") + off = var("Off") + wild = var("_") + obj2 = var("Obj2") + key2 = var("Key2") + + shape_match = {:tuple, @line, [{:atom, @line, :shape}, wild, offsets, vals, wild]} + obj_tuple = {:tuple, @line, [{:atom, @line, :obj}, id]} + + {:function, @line, :op_get_field, 2, + [ + {:clause, @line, [obj_tuple, key], [], + [ + {:case, @line, + {:call, @line, {:remote, @line, {:atom, @line, :erlang}, {:atom, @line, :get}}, [id]}, + [ + {:clause, @line, [shape_match], [], + [ + {:case, @line, + {:call, @line, {:remote, @line, {:atom, @line, :maps}, {:atom, @line, :find}}, + [key, offsets]}, + [ + {:clause, @line, [{:tuple, @line, [{:atom, @line, :ok}, off]}], [], + [ + {:call, @line, + {:remote, @line, {:atom, @line, :erlang}, {:atom, @line, :element}}, + [{:op, @line, :+, off, {:integer, @line, 1}}, vals]} + ]}, + {:clause, @line, [{:atom, @line, :error}], [], + [remote_call(QuickBEAM.VM.ObjectModel.Get, :get, [obj_tuple, key])]} + ]} + ]}, + {:clause, @line, [wild], [], + [remote_call(QuickBEAM.VM.ObjectModel.Get, :get, [obj_tuple, key])]} + ]} + ]}, + {:clause, @line, [obj2, key2], [], + [remote_call(QuickBEAM.VM.ObjectModel.Get, :get, [obj2, key2])]} + ]} + end + + defp local_call(fun, args), do: {:call, @line, {:atom, @line, fun}, args} + + defp truthy_inline_helper do + v = var("V") + + {:function, @line, :op_truthy, 1, + [ + {:clause, @line, [{:atom, @line, nil}], [], [{:atom, @line, false}]}, + {:clause, @line, [{:atom, @line, :undefined}], [], [{:atom, @line, false}]}, + {:clause, @line, [{:atom, @line, false}], [], [{:atom, @line, false}]}, + {:clause, @line, [{:integer, @line, 0}], [], [{:atom, @line, false}]}, + {:clause, @line, [{:float, @line, 0.0}], [], [{:atom, @line, false}]}, + {:clause, @line, [{:float, @line, -0.0}], [], [{:atom, @line, false}]}, + {:clause, @line, [{:atom, @line, :nan}], [], [{:atom, @line, false}]}, + {:clause, @line, [{:bin, @line, []}], [], [{:atom, @line, false}]}, + {:clause, @line, [v], [], [{:atom, @line, true}]} + ]} + end + + defp typeof_inline_helper do + v = var("V") + + {:function, @line, :op_typeof, 1, + [ + {:clause, @line, [{:atom, @line, :undefined}], [], [:erl_parse.abstract("undefined")]}, + {:clause, @line, [{:atom, @line, nil}], [], [:erl_parse.abstract("object")]}, + {:clause, @line, [{:atom, @line, true}], [], [:erl_parse.abstract("boolean")]}, + {:clause, @line, [{:atom, @line, false}], [], [:erl_parse.abstract("boolean")]}, + {:clause, @line, [v], [[{:call, @line, {:atom, @line, :is_number}, [v]}]], + [:erl_parse.abstract("number")]}, + {:clause, @line, [v], [[{:call, @line, {:atom, @line, :is_binary}, [v]}]], + [:erl_parse.abstract("string")]}, + {:clause, @line, [v], [], [remote_call(Values, :typeof, [v])]} + ]} + end + + defp list_expr([]), do: {nil, @line} + defp list_expr([h | t]), do: {:cons, @line, h, list_expr(t)} +end diff --git a/lib/quickbeam/vm/compiler/generator_iterator.ex b/lib/quickbeam/vm/compiler/generator_iterator.ex new file mode 100644 index 000000000..75f222cc9 --- /dev/null +++ b/lib/quickbeam/vm/compiler/generator_iterator.ex @@ -0,0 +1,90 @@ +defmodule QuickBEAM.VM.Compiler.GeneratorIterator do + @moduledoc """ + Iterator protocol for compiled generator functions. + + Compiled generators throw `{:generator_yield, value, continuation}` to + suspend. The continuation is a `fun(arg)` that resumes the generator + body from the yield point with `arg` as the yield return value. + """ + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.PromiseState, as: Promise + + @doc "Builds the runtime value represented by this module." + def build(gen_ref) do + next_fn = + {:builtin, "next", + fn + [arg | _], _this -> do_next(gen_ref, arg) + [], _this -> do_next(gen_ref, :undefined) + end} + + return_fn = + {:builtin, "return", + fn + [val | _], _this -> do_return(gen_ref, val) + [], _this -> do_return(gen_ref, :undefined) + end} + + Heap.wrap(%{"next" => next_fn, "return" => return_fn}) + end + + @doc "Builds async data for iterator protocol for compiled generator functions." + def build_async(gen_ref) do + next_fn = + {:builtin, "next", + fn + [arg | _], _this -> Promise.resolved(do_next(gen_ref, arg)) + [], _this -> Promise.resolved(do_next(gen_ref, :undefined)) + end} + + return_fn = + {:builtin, "return", + fn + [val | _], _this -> Promise.resolved(do_return(gen_ref, val)) + [], _this -> Promise.resolved(do_return(gen_ref, :undefined)) + end} + + Heap.wrap(%{"next" => next_fn, "return" => return_fn}) + end + + defp do_next(gen_ref, arg) do + case Heap.get_obj(gen_ref) do + %{state: :suspended, continuation: cont} when is_function(cont, 1) -> + resume(gen_ref, cont, arg) + + _ -> + done(:undefined) + end + end + + defp do_return(gen_ref, val) do + Heap.put_obj(gen_ref, %{state: :completed}) + done(val) + end + + defp resume(gen_ref, cont, arg) do + result = cont.(arg) + Heap.put_obj(gen_ref, %{state: :completed}) + done(result) + catch + {:generator_yield, val, next_cont} -> + Heap.put_obj(gen_ref, %{state: :suspended, continuation: next_cont}) + yield(val) + + {:generator_yield_star, val, next_cont} -> + Heap.put_obj(gen_ref, %{state: :suspended, continuation: next_cont}) + val + + {:generator_return, val} -> + Heap.put_obj(gen_ref, %{state: :completed}) + done(val) + + {:js_throw, _} = thrown -> + Heap.put_obj(gen_ref, %{state: :completed}) + throw(thrown) + end + + defp yield(val), do: Heap.wrap(%{"value" => val, "done" => false}) + defp done(val), do: Heap.wrap(%{"value" => val, "done" => true}) +end diff --git a/lib/quickbeam/vm/compiler/lowering.ex b/lib/quickbeam/vm/compiler/lowering.ex new file mode 100644 index 000000000..5e9e30a11 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering.ex @@ -0,0 +1,985 @@ +defmodule QuickBEAM.VM.Compiler.Lowering do + @moduledoc "Bytecode-to-Erlang lowering pipeline: analyses control flow and types, then emits abstract-form block functions." + + alias QuickBEAM.VM.Compiler.Analysis.{CFG, Stack, Types} + alias QuickBEAM.VM.Compiler.Lowering.Builder + alias QuickBEAM.VM.Compiler.{Lowering.Ops, Lowering.State} + alias QuickBEAM.VM.Heap + + @guardable_types [:integer, :number, :boolean, :string, :undefined, :null] + @line 1 + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(fun, instructions) do + entries = CFG.block_entries(instructions) + slot_count = fun.arg_count + fun.var_count + constants = fun.constants + instrs = List.to_tuple(instructions) + size = tuple_size(instrs) + + with {:ok, stack_depths} <- Stack.infer_block_stack_depths(instructions, entries), + {:ok, {entry_types, return_type}} <- + Types.infer_block_entry_types(fun, instructions, entries, stack_depths) do + inline_targets = CFG.inlineable_entries(instructions, entries) + + blocks = + for start <- entries, + Map.has_key?(stack_depths, start), + not MapSet.member?(inline_targets, start), + into: [] do + {start, + block_form( + fun, + start, + fun.arg_count, + slot_count, + instrs, + size, + entries, + Map.fetch!(stack_depths, start), + stack_depths, + constants, + inline_targets, + Map.get(entry_types, start), + return_type + )} + end + + case Enum.find(blocks, fn {_start, form} -> match?({:error, _}, form) end) do + nil -> {:ok, {slot_count, Enum.map(blocks, &elem(&1, 1))}} + {_start, error} -> error + end + end + end + + defp block_form( + fun, + start, + arg_count, + slot_count, + instructions, + size, + entries, + stack_depth, + stack_depths, + constants, + inline_targets, + entry_type_state, + return_type + ) do + next_entry = CFG.next_entry(entries, start) + + args = + [Builder.ctx_var() | Builder.slot_vars(slot_count)] ++ + Builder.stack_vars(stack_depth) ++ Builder.capture_vars(slot_count) + + fast_guards = block_clause_guards(slot_count, stack_depth, entry_type_state) + + with {:ok, fast_body} <- + lower_block( + instructions, + size, + start, + next_entry, + arg_count, + block_state( + fun, + arg_count, + slot_count, + stack_depth, + return_type, + entry_type_state, + true + ), + stack_depths, + constants, + entries, + inline_targets + ) do + clauses = + if fast_guards == [] do + [{:clause, @line, args, [], fast_body}] + else + with {:ok, slow_body} <- + lower_block( + instructions, + size, + start, + next_entry, + arg_count, + block_state( + fun, + arg_count, + slot_count, + stack_depth, + return_type, + entry_type_state, + false + ), + stack_depths, + constants, + entries, + inline_targets + ) do + [ + {:clause, @line, args, [fast_guards], fast_body}, + {:clause, @line, args, [], slow_body} + ] + end + end + + case clauses do + {:error, _} = error -> + error + + clauses -> + {:function, @line, Builder.block_name(start), 1 + slot_count + stack_depth + slot_count, + clauses} + end + end + end + + defp block_state(fun, arg_count, slot_count, stack_depth, return_type, entry_type_state, typed?) do + state_opts = + [ + locals: fun.locals, + closure_vars: fun.closure_vars, + atoms: Heap.get_fn_atoms(fun.byte_code), + arg_count: arg_count, + return_type: return_type + ] ++ + case {entry_type_state, typed?} do + {nil, _} -> + [] + + {entry_type_state, true} -> + [ + slot_types: entry_type_state.slot_types, + slot_inits: entry_type_state.slot_inits, + stack_types: entry_type_state.stack_types + ] + + {entry_type_state, false} -> + [slot_inits: entry_type_state.slot_inits] + end + + State.new(slot_count, stack_depth, state_opts) + end + + defp block_clause_guards(_slot_count, _stack_depth, nil), do: [] + + defp block_clause_guards(slot_count, stack_depth, entry_type_state) do + slot_guards = + if slot_count == 0 do + [] + else + for idx <- 0..(slot_count - 1), + guard = + type_guard( + Builder.slot_var(idx), + Map.get(entry_type_state.slot_types, idx, :unknown) + ), + guard != nil, + do: guard + end + + stack_guards = + for {type, idx} <- Enum.with_index(entry_type_state.stack_types || []), + idx < stack_depth, + guard = type_guard(Builder.stack_var(idx), type), + guard != nil, + do: guard + + slot_guards ++ stack_guards + end + + defp type_guard(_expr, type) when type not in @guardable_types, do: nil + defp type_guard(expr, :integer), do: {:call, @line, {:atom, @line, :is_integer}, [expr]} + defp type_guard(expr, :number), do: {:call, @line, {:atom, @line, :is_number}, [expr]} + defp type_guard(expr, :boolean), do: {:call, @line, {:atom, @line, :is_boolean}, [expr]} + defp type_guard(expr, :string), do: {:call, @line, {:atom, @line, :is_binary}, [expr]} + defp type_guard(expr, :undefined), do: {:op, @line, :==, expr, {:atom, @line, :undefined}} + defp type_guard(expr, :null), do: {:op, @line, :==, expr, {:atom, @line, nil}} + + defp lower_block( + _instructions, + size, + idx, + next_entry, + arg_count, + state, + _stack_depths, + _constants, + _entries, + _inline_targets + ) + when idx >= size do + {:error, {:missing_terminator, idx, next_entry, arg_count, state.body}} + end + + defp lower_block( + instructions, + size, + idx, + idx, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) do + if MapSet.member?(inline_targets, idx) do + lower_block( + instructions, + size, + idx, + CFG.next_entry(entries, idx), + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) + else + with {:ok, call} <- State.block_jump_call(state, idx, stack_depths) do + {:ok, Enum.reverse([call | state.body])} + end + end + end + + defp lower_block( + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) do + instruction = elem(instructions, idx) + + case instruction do + {op, [target]} -> + case CFG.opcode_name(op) do + {:ok, :catch} -> + lower_catch_suffix( + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets, + target + ) + + {:ok, :gosub} -> + lower_gosub_suffix( + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets, + target + ) + + _ -> + lower_instruction( + instruction, + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) + end + + {op, []} -> + case CFG.opcode_name(op) do + {:ok, :object} -> + case collect_define_fields(instructions, size, idx + 1, arg_count, state) do + {:ok, map_pairs, skip_to, state} -> + sorted_pairs = + Enum.sort_by(map_pairs, fn {k, _v} -> extract_key_string(k) || "" end) + + keys_list = Enum.map(sorted_pairs, &elem(&1, 0)) + vals_list = Enum.map(sorted_pairs, &elem(&1, 1)) + keys_tuple = {:tuple, @line, keys_list} + vals_tuple = {:tuple, @line, vals_list} + + ct_offsets = + sorted_pairs + |> Enum.with_index() + |> Enum.reduce(%{}, fn {{k_expr, _v}, i}, acc -> + key_str = extract_key_string(k_expr) + if key_str, do: Map.put(acc, key_str, i), else: acc + end) + + value_map = + Map.new(sorted_pairs, fn {k_expr, v_expr} -> + {extract_key_string(k_expr), v_expr} + end) + + {obj, state} = + State.bind( + state, + Builder.temp_name(state.temp), + Builder.remote_call(QuickBEAM.VM.Heap, :wrap_keyed, [keys_tuple, vals_tuple]) + ) + + lower_block( + instructions, + size, + skip_to, + next_entry, + arg_count, + State.push(state, obj, {:shaped_object, ct_offsets, value_map}), + stack_depths, + constants, + entries, + inline_targets + ) + + :not_literal -> + lower_instruction( + instruction, + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) + end + + _ -> + lower_instruction( + instruction, + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) + end + + _ -> + lower_instruction( + instruction, + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) + end + end + + defp extract_key_string({:string, _, chars}) when is_list(chars), do: List.to_string(chars) + + defp extract_key_string({:bin, _, elements}) when is_list(elements) do + elements + |> Enum.map(fn + {:bin_element, _, {:integer, _, c}, _, _} -> c + {:bin_element, _, {:string, _, chars}, _, _} -> chars + _ -> [] + end) + |> List.flatten() + |> List.to_string() + end + + defp extract_key_string(_), do: nil + + defp collect_define_fields(instructions, size, idx, arg_count, state) do + collect_define_fields(instructions, size, idx, arg_count, state, []) + end + + defp collect_define_fields(_instructions, size, idx, _arg_count, state, acc) + when idx + 1 >= size do + if acc == [], do: :not_literal, else: {:ok, Enum.reverse(acc), idx, state} + end + + defp collect_define_fields(instructions, size, idx, arg_count, state, acc) do + val_instr = elem(instructions, idx) + df_instr = elem(instructions, idx + 1) + + with {val_op, val_args} <- val_instr, + {df_op, [key_idx]} <- df_instr, + {:ok, :define_field} <- CFG.opcode_name(df_op), + {:ok, val_expr, new_state} <- lower_value_opcode(val_op, val_args, arg_count, state) do + key_name = Builder.atom_name(new_state, key_idx) + + if is_binary(key_name) do + key_expr = Builder.literal(key_name) + + collect_define_fields(instructions, size, idx + 2, arg_count, new_state, [ + {key_expr, val_expr} | acc + ]) + else + if acc == [], do: :not_literal, else: {:ok, Enum.reverse(acc), idx, state} + end + else + _ -> + if acc == [] do + :not_literal + else + {:ok, Enum.reverse(acc), idx, state} + end + end + end + + defp lower_value_opcode(op, args, _arg_count, state) do + case CFG.opcode_name(op) do + {:ok, :push_i32} -> + {:ok, Builder.integer(hd(args)), state} + + {:ok, :push_i8} -> + {:ok, Builder.integer(hd(args)), state} + + {:ok, :push_0} -> + {:ok, Builder.integer(0), state} + + {:ok, :push_1} -> + {:ok, Builder.integer(1), state} + + {:ok, :push_2} -> + {:ok, Builder.integer(2), state} + + {:ok, :push_3} -> + {:ok, Builder.integer(3), state} + + {:ok, :push_4} -> + {:ok, Builder.integer(4), state} + + {:ok, :push_5} -> + {:ok, Builder.integer(5), state} + + {:ok, :push_6} -> + {:ok, Builder.integer(6), state} + + {:ok, :push_7} -> + {:ok, Builder.integer(7), state} + + {:ok, :push_minus1} -> + {:ok, Builder.integer(-1), state} + + {:ok, :null} -> + {:ok, Builder.atom(nil), state} + + {:ok, :undefined} -> + {:ok, Builder.atom(:undefined), state} + + {:ok, :push_false} -> + {:ok, Builder.atom(false), state} + + {:ok, :push_true} -> + {:ok, Builder.atom(true), state} + + {:ok, :push_empty_string} -> + {:ok, Builder.literal(""), state} + + {:ok, n} when n in [:get_arg0, :get_arg1, :get_arg2, :get_arg3] -> + slot_idx = + case n do + :get_arg0 -> 0 + :get_arg1 -> 1 + :get_arg2 -> 2 + :get_arg3 -> 3 + end + + {:ok, State.slot_expr(state, slot_idx), state} + + {:ok, :get_arg} -> + {:ok, State.slot_expr(state, hd(args)), state} + + {:ok, n} when n in [:get_loc0, :get_loc1, :get_loc2, :get_loc3] -> + slot_idx = + case n do + :get_loc0 -> 0 + :get_loc1 -> 1 + :get_loc2 -> 2 + :get_loc3 -> 3 + end + + {:ok, State.slot_expr(state, slot_idx), state} + + {:ok, :get_loc} -> + {:ok, State.slot_expr(state, hd(args)), state} + + {:ok, :push_atom_value} -> + {:ok, State.compiler_call(state, :push_atom_value, [Builder.literal(hd(args))]), state} + + _ -> + :error + end + end + + defp lower_instruction( + {op, [target]} = instruction, + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) do + case CFG.opcode_name(op) do + {:ok, :if_false} -> + lower_branch_instruction( + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets, + target, + false + ) + + {:ok, :if_false8} -> + lower_branch_instruction( + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets, + target, + false + ) + + {:ok, :if_true} -> + lower_branch_instruction( + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets, + target, + true + ) + + {:ok, :if_true8} -> + lower_branch_instruction( + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets, + target, + true + ) + + _ -> + lower_non_branch_instruction( + instruction, + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) + end + end + + defp lower_instruction( + instruction, + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) do + lower_non_branch_instruction( + instruction, + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) + end + + defp lower_non_branch_instruction( + instruction, + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) do + case Ops.lower_instruction( + instruction, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) do + {:ok, next_state} -> + lower_block( + instructions, + size, + idx + 1, + next_entry, + arg_count, + next_state, + stack_depths, + constants, + entries, + inline_targets + ) + + {:inline_goto, target, next_state} -> + lower_block( + instructions, + size, + target, + CFG.next_entry(entries, target), + arg_count, + next_state, + stack_depths, + constants, + entries, + inline_targets + ) + + {:done, body} -> + {:ok, body} + + {:error, _} = error -> + error + end + end + + defp lower_branch_instruction( + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets, + target, + sense + ) do + if MapSet.member?(inline_targets, target) or MapSet.member?(inline_targets, next_entry) do + with {:ok, cond_expr, cond_type, state} <- State.pop_typed(state), + {:ok, target_body} <- + lower_branch_target_body( + instructions, + size, + target, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ), + {:ok, next_body} <- + lower_branch_target_body( + instructions, + size, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) do + truthy = Builder.branch_condition(cond_expr, cond_type) + false_body = if(sense, do: next_body, else: target_body) + true_body = if(sense, do: target_body, else: next_body) + {:ok, Enum.reverse([Builder.branch_case(truthy, false_body, true_body) | state.body])} + end + else + lower_non_branch_instruction( + {if(sense, + do: QuickBEAM.VM.Opcodes.num(:if_true), + else: QuickBEAM.VM.Opcodes.num(:if_false) + ), [target]}, + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) + end + end + + defp lower_branch_target_body( + _instructions, + _size, + nil, + _arg_count, + _state, + _stack_depths, + _constants, + _entries, + _inline_targets + ), + do: {:error, :missing_branch_fallthrough} + + defp lower_branch_target_body( + instructions, + size, + target, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets + ) do + if MapSet.member?(inline_targets, target) do + lower_block( + instructions, + size, + target, + CFG.next_entry(entries, target), + arg_count, + %{state | body: []}, + stack_depths, + constants, + entries, + inline_targets + ) + else + with {:ok, call} <- State.block_jump_call(state, target, stack_depths) do + {:ok, [call]} + end + end + end + + defp lower_catch_suffix( + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets, + target + ) do + with :ok <- ensure_catch_region_supported(instructions, idx, target), + {saved_stack, state} <- freeze_stack(state), + {:ok, handler_call} <- + State.block_jump_call_values( + target, + stack_depths, + State.ctx_expr(state), + State.current_slots(state), + [Builder.var("Caught#{idx}") | saved_stack], + State.current_capture_cells(state) + ), + {:ok, try_body} <- + lower_block( + instructions, + size, + idx + 1, + next_entry, + arg_count, + %{ + state + | body: [], + stack: [Builder.literal(target) | saved_stack], + stack_types: [:integer | state.stack_types] + }, + stack_depths, + constants, + entries, + inline_targets + ) do + {:ok, + Enum.reverse([ + Builder.try_catch_expr(try_body, Builder.var("Caught#{idx}"), [handler_call]) + | state.body + ])} + end + end + + defp lower_gosub_suffix( + instructions, + size, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + entries, + inline_targets, + target + ) do + with {:ok, inlined_state} <- lower_finally_inline(instructions, size, target, state) do + lower_block( + instructions, + size, + idx + 1, + next_entry, + arg_count, + inlined_state, + stack_depths, + constants, + entries, + inline_targets + ) + end + end + + defp lower_finally_inline(_instructions, size, idx, _state) when idx >= size do + {:error, {:missing_ret, idx}} + end + + defp lower_finally_inline(instructions, size, idx, state) do + instruction = elem(instructions, idx) + + case instruction do + {op, []} -> + case CFG.opcode_name(op) do + {:ok, :ret} -> + {:ok, state} + + {:ok, name} when name in [:catch, :gosub, :goto, :goto8, :goto16] -> + {:error, {:unsupported_finally_opcode, name, idx}} + + _ -> + lower_finally_instruction(instructions, size, instruction, idx, state) + end + + {op, _args} -> + case CFG.opcode_name(op) do + {:ok, :gosub} -> + {:error, {:unsupported_finally_opcode, :gosub, idx}} + + {:ok, :catch} -> + {:error, {:unsupported_finally_opcode, :catch, idx}} + + {:ok, name} + when name in [:if_false, :if_false8, :if_true, :if_true8, :goto, :goto8, :goto16] -> + {:error, {:unsupported_finally_opcode, name, idx}} + + _ -> + lower_finally_instruction(instructions, size, instruction, idx, state) + end + end + end + + defp lower_finally_instruction(instructions, size, instruction, idx, state) do + case Ops.lower_instruction(instruction, idx, nil, 0, state, %{}, [], [], MapSet.new()) do + {:ok, next_state} -> + lower_finally_inline(instructions, size, idx + 1, next_state) + + {:done, body} -> + {:ok, + %{state | body: Enum.reverse(body), stack: state.stack, stack_types: state.stack_types}} + + {:error, _} = error -> + error + end + end + + defp freeze_stack(%{stack: []} = state), do: {[], state} + + defp freeze_stack(state) do + state = + Enum.reduce(0..(length(state.stack) - 1), state, fn idx, state -> + {:ok, state, _bound} = State.bind_stack_entry(state, idx) + state + end) + + {state.stack, state} + end + + defp ensure_catch_region_supported(_instructions, _catch_idx, _target), do: :ok +end diff --git a/lib/quickbeam/vm/compiler/lowering/builder.ex b/lib/quickbeam/vm/compiler/lowering/builder.ex new file mode 100644 index 000000000..d6d52b5b3 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/builder.ex @@ -0,0 +1,137 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Builder do + @moduledoc "Erlang abstract-format helpers: variable, literal, call, and case-clause constructors for the lowering pass." + + alias QuickBEAM.VM.Compiler.RuntimeHelpers + alias QuickBEAM.VM.PredefinedAtoms + + @line 1 + + @doc "Returns the generated Erlang function name for a bytecode block." + def block_name(idx), do: String.to_atom("block_#{idx}") + def slot_name(idx, n), do: "Slot#{idx}_#{n}" + def capture_name(idx, n), do: "Capture#{idx}_#{n}" + def temp_name(n), do: "Tmp#{n}" + def ctx_var, do: var("Ctx") + def slot_var(idx), do: var("Slot#{idx}") + def stack_var(idx), do: var("Stack#{idx}") + def capture_var(idx), do: var("Capture#{idx}") + @doc "Returns generated Erlang variables for all local slots." + def slot_vars(0), do: [] + def slot_vars(count), do: Enum.map(0..(count - 1), &slot_var/1) + def stack_vars(0), do: [] + def stack_vars(count), do: Enum.map(0..(count - 1), &stack_var/1) + def capture_vars(0), do: [] + def capture_vars(count), do: Enum.map(0..(count - 1), &capture_var/1) + + def var(name) when is_binary(name), do: {:var, @line, String.to_atom(name)} + def var(name) when is_integer(name), do: {:var, @line, String.to_atom(Integer.to_string(name))} + def var(name) when is_atom(name), do: {:var, @line, name} + + @doc "Builds an Erlang abstract-format integer literal." + def integer(value), do: {:integer, @line, value} + def atom(value), do: {:atom, @line, value} + def literal(value), do: :erl_parse.abstract(value) + def match(left, right), do: {:match, @line, left, right} + def tuple_expr(values), do: {:tuple, @line, values} + + def tuple_element(tuple, index) do + remote_call(:erlang, :element, [integer(index), tuple]) + end + + @doc "Builds an Erlang abstract-format map expression." + def map_expr(entries) do + {:map, @line, Enum.map(entries, fn {key, value} -> {:map_field_assoc, @line, key, value} end)} + end + + def list_expr([]), do: {nil, @line} + def list_expr([head | tail]), do: {:cons, @line, head, list_expr(tail)} + + def remote_call(mod, fun, args) do + {:call, @line, {:remote, @line, literal(mod), {:atom, @line, fun}}, args} + end + + @doc "Builds an Erlang abstract-format local call expression." + def local_call(fun, args), do: {:call, @line, {:atom, @line, fun}, args} + def compiler_call(fun, args), do: remote_call(RuntimeHelpers, fun, [ctx_var() | args]) + + def throw_js(expr), do: remote_call(:erlang, :throw, [{:tuple, @line, [atom(:js_throw), expr]}]) + + def try_catch_expr(try_body, err_var, catch_body) do + {:try, @line, try_body, [], [catch_clause(err_var, catch_body)], []} + end + + @doc "Builds a guard-style expression checking `undefined` or `null`." + def undefined_or_null_expr(expr) do + {:op, @line, :orelse, {:op, @line, :==, expr, atom(:undefined)}, + {:op, @line, :==, expr, atom(nil)}} + end + + def branch_condition(expr, :boolean), do: expr + + def branch_condition({:call, _, {:atom, _, fun}, [left, right]} = expr, _type) + when fun in [:op_lt, :op_lte, :op_gt, :op_gte], + do: comparison_branch_condition(fun, left, right, expr) + + def branch_condition({:call, _, {:atom, _, fun}, _args} = expr, _type) + when fun in [:op_eq, :op_neq, :op_strict_eq, :op_strict_neq], + do: expr + + def branch_condition(expr, :integer), do: {:op, @line, :"=/=", expr, integer(0)} + def branch_condition(_expr, :undefined), do: atom(false) + def branch_condition(_expr, :null), do: atom(false) + def branch_condition(expr, :string), do: {:op, @line, :"=/=", expr, literal("")} + def branch_condition(_expr, :object), do: atom(true) + def branch_condition(_expr, :function), do: atom(true) + def branch_condition(_expr, {:function, _}), do: atom(true) + def branch_condition(_expr, :self_fun), do: atom(true) + def branch_condition(expr, _type), do: local_call(:op_truthy, [expr]) + @doc "Builds a boolean case expression with false and true branches." + def branch_case(expr, false_body, true_body), do: case_expr(expr, false_body, true_body) + + def atom_name(%{atoms: atoms}, atom_idx), do: resolve_atom_name(atom_idx, atoms) + + defp resolve_local_name(name, _atoms) when is_binary(name), do: name + defp resolve_local_name({:predefined, idx}, _atoms), do: PredefinedAtoms.lookup(idx) + + defp resolve_local_name(idx, atoms) + when is_integer(idx) and is_tuple(atoms) and idx >= 0 and idx < tuple_size(atoms), + do: elem(atoms, idx) + + defp resolve_local_name(_name, _atoms), do: nil + defp resolve_atom_name(atom_idx, atoms), do: resolve_local_name(atom_idx, atoms) + + defp comparison_branch_condition(fun, left, right, fallback_expr) do + lhs = var(:BranchLhs) + rhs = var(:BranchRhs) + + {:case, @line, tuple_expr([left, right]), + [ + {:clause, @line, [tuple_expr([lhs, rhs])], [number_guards(lhs, rhs)], + [{:op, @line, comparison_operator(fun), lhs, rhs}]}, + {:clause, @line, [var(:_)], [], [fallback_expr]} + ]} + end + + defp comparison_operator(:op_lt), do: :< + defp comparison_operator(:op_lte), do: :"=<" + defp comparison_operator(:op_gt), do: :> + defp comparison_operator(:op_gte), do: :>= + + defp number_guards(a, b), do: [number_guard(a), number_guard(b)] + defp number_guard(expr), do: {:call, @line, {:atom, @line, :is_number}, [expr]} + + defp case_expr(expr, false_body, true_body) do + {:case, @line, expr, + [ + {:clause, @line, [atom(false)], [], false_body}, + {:clause, @line, [atom(true)], [], true_body} + ]} + end + + defp catch_clause(err_var, catch_body) do + pattern = + {:tuple, @line, [atom(:throw), {:tuple, @line, [atom(:js_throw), err_var]}, var(:_)]} + + {:clause, @line, [pattern], [], catch_body} + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/captures.ex b/lib/quickbeam/vm/compiler/lowering/captures.ex new file mode 100644 index 000000000..1b4adcb90 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/captures.ex @@ -0,0 +1,63 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Captures do + @moduledoc "Capture-cell management during lowering: ensures and closes shared cells for captured local variables." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, State} + + @doc "Ensures a capture cell exists for a local slot." + def ensure_capture_cell(state, idx) do + {bound, state} = + State.bind( + state, + Builder.capture_name(idx, state.temp), + State.compiler_call(state, :ensure_capture_cell, [ + State.capture_cell_expr(state, idx), + State.slot_expr(state, idx) + ]) + ) + + {:ok, State.put_capture_cell(state, idx, bound), bound} + end + + @doc "Closes a capture cell over the current slot value." + def close_capture_cell(state, idx) do + {bound, state} = + State.bind( + state, + Builder.capture_name(idx, state.temp), + State.compiler_call(state, :close_capture_cell, [ + State.capture_cell_expr(state, idx), + State.slot_expr(state, idx) + ]) + ) + + {:ok, State.put_capture_cell(state, idx, bound)} + end + + @doc "Synchronizes a capture cell with the current slot value." + def sync_capture_cell(state, idx, expr) do + if slot_captured?(state, idx) do + %{ + state + | body: [ + State.compiler_call(state, :sync_capture_cell, [ + State.capture_cell_expr(state, idx), + expr + ]) + | state.body + ] + } + else + state + end + end + + @doc "Returns whether a local slot is captured by a closure." + def slot_captured?(%{locals: locals}, idx) when is_list(locals) do + case Enum.at(locals, idx) do + %{is_captured: true} -> true + _ -> false + end + end + + def slot_captured?(_state, _idx), do: false +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops.ex b/lib/quickbeam/vm/compiler/lowering/ops.ex new file mode 100644 index 000000000..78ba63842 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops.ex @@ -0,0 +1,59 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops do + @moduledoc "Per-opcode lowering: translates each QuickJS bytecode instruction into Erlang abstract-form expressions." + + alias QuickBEAM.VM.Compiler.Analysis.CFG + + alias QuickBEAM.VM.Compiler.Lowering.Ops.{ + Arithmetic, + Calls, + Classes, + Control, + Generators, + Globals, + Iterators, + Locals, + Objects, + Stack, + WithScope + } + + @doc "Lowers one bytecode instruction into compiler state changes." + def lower_instruction( + {op, args}, + idx, + next_entry, + arg_count, + state, + stack_depths, + constants, + _entries, + inline_targets + ) do + name = CFG.opcode_name(op) + name_args = {name, args} + + with :not_handled <- Stack.lower(state, constants, arg_count, name_args), + :not_handled <- Locals.lower(state, name_args), + :not_handled <- Globals.lower(state, name_args), + :not_handled <- Arithmetic.lower(state, name_args), + :not_handled <- Objects.lower(state, name_args), + :not_handled <- Calls.lower(state, name_args), + :not_handled <- + Control.lower(state, idx, next_entry, stack_depths, inline_targets, name_args), + :not_handled <- Iterators.lower(state, name_args), + :not_handled <- Classes.lower(state, name_args), + :not_handled <- Generators.lower(state, next_entry, stack_depths, name_args), + :not_handled <- WithScope.lower(state, name_args) do + case name_args do + {{:ok, :invalid}, _} -> + {:error, {:unsupported_opcode, :invalid}} + + {{:error, _} = error, _} -> + error + + {{:ok, op_name}, _} -> + {:error, {:unsupported_opcode, op_name}} + end + end + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops/arithmetic.ex b/lib/quickbeam/vm/compiler/lowering/ops/arithmetic.ex new file mode 100644 index 000000000..61e6f297d --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops/arithmetic.ex @@ -0,0 +1,146 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops.Arithmetic do + @moduledoc "Arithmetic, bitwise, comparison, and unary opcodes." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, State} + alias QuickBEAM.VM.Compiler.RuntimeHelpers + alias QuickBEAM.VM.Interpreter.Values + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(state, name_args) do + case name_args do + {{:ok, :neg}, []} -> + State.unary_local_call(state, :op_neg) + + {{:ok, :plus}, []} -> + State.unary_local_call(state, :op_plus) + + {{:ok, :not}, []} -> + State.unary_call(state, RuntimeHelpers, :bit_not) + + {{:ok, :lnot}, []} -> + State.unary_call(state, RuntimeHelpers, :lnot) + + {{:ok, :is_undefined}, []} -> + State.unary_call(state, RuntimeHelpers, :undefined?) + + {{:ok, :is_null}, []} -> + State.unary_call(state, RuntimeHelpers, :null?) + + {{:ok, :is_undefined_or_null}, []} -> + lower_is_undefined_or_null(state) + + {{:ok, :typeof_is_undefined}, []} -> + State.unary_call(state, RuntimeHelpers, :typeof_is_undefined) + + {{:ok, :typeof_is_function}, []} -> + State.unary_call(state, RuntimeHelpers, :typeof_is_function) + + {{:ok, :typeof}, []} -> + with {:ok, expr, _type, state} <- State.pop_typed(state) do + {:ok, State.push(state, Builder.local_call(:op_typeof, [expr]))} + end + + {{:ok, :inc}, []} -> + lower_inc_dec(state, :+) + + {{:ok, :dec}, []} -> + lower_inc_dec(state, :-) + + {{:ok, :post_inc}, []} -> + State.post_update(state, :post_inc) + + {{:ok, :post_dec}, []} -> + State.post_update(state, :post_dec) + + {{:ok, :add}, []} -> + State.binary_local_call(state, :op_add) + + {{:ok, :sub}, []} -> + State.binary_local_call(state, :op_sub) + + {{:ok, :mul}, []} -> + State.binary_local_call(state, :op_mul) + + {{:ok, :div}, []} -> + State.binary_local_call(state, :op_div) + + {{:ok, :mod}, []} -> + State.binary_local_call(state, :op_mod) + + {{:ok, :pow}, []} -> + State.binary_call(state, Values, :pow) + + {{:ok, :band}, []} -> + State.binary_local_call(state, :op_band) + + {{:ok, :bor}, []} -> + State.binary_local_call(state, :op_bor) + + {{:ok, :bxor}, []} -> + State.binary_local_call(state, :op_bxor) + + {{:ok, :shl}, []} -> + State.binary_local_call(state, :op_shl) + + {{:ok, :sar}, []} -> + State.binary_local_call(state, :op_sar) + + {{:ok, :shr}, []} -> + State.binary_local_call(state, :op_shr) + + {{:ok, :lt}, []} -> + State.binary_local_call(state, :op_lt) + + {{:ok, :lte}, []} -> + State.binary_local_call(state, :op_lte) + + {{:ok, :gt}, []} -> + State.binary_local_call(state, :op_gt) + + {{:ok, :gte}, []} -> + State.binary_local_call(state, :op_gte) + + {{:ok, :eq}, []} -> + State.binary_local_call(state, :op_eq) + + {{:ok, :neq}, []} -> + State.binary_local_call(state, :op_neq) + + {{:ok, :strict_eq}, []} -> + State.binary_local_call(state, :op_strict_eq) + + {{:ok, :strict_neq}, []} -> + State.binary_local_call(state, :op_strict_neq) + + _ -> + :not_handled + end + end + + defp lower_inc_dec(state, op) do + with {:ok, expr, type, state} <- State.pop_typed(state) do + {result_expr, result_type} = + if type == :integer do + {{:op, 1, op, expr, {:integer, 1, 1}}, :integer} + else + fun = if op == :+, do: :inc, else: :dec + {State.compiler_call(state, fun, [expr]), :unknown} + end + + {:ok, State.push(state, result_expr, result_type)} + end + end + + defp lower_is_undefined_or_null(state) do + with {:ok, expr, type, state} <- State.pop_typed(state) do + result = + case type do + :undefined -> Builder.atom(true) + :null -> Builder.atom(true) + _ -> Builder.undefined_or_null_expr(expr) + end + + {:ok, State.push(state, result, :boolean)} + end + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops/calls.ex b/lib/quickbeam/vm/compiler/lowering/ops/calls.ex new file mode 100644 index 000000000..fa124500b --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops/calls.ex @@ -0,0 +1,121 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops.Calls do + @moduledoc "Call, apply, eval, return, and closure opcodes." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, State} + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(state, name_args) do + case name_args do + {{:ok, :call_constructor}, [argc]} -> + State.invoke_constructor_call(state, argc) + + {{:ok, :call}, [argc]} -> + State.invoke_call(state, argc) + + {{:ok, :call0}, [argc]} -> + State.invoke_call(state, argc) + + {{:ok, :call1}, [argc]} -> + State.invoke_call(state, argc) + + {{:ok, :call2}, [argc]} -> + State.invoke_call(state, argc) + + {{:ok, :call3}, [argc]} -> + State.invoke_call(state, argc) + + {{:ok, :tail_call}, [argc]} -> + State.invoke_tail_call(state, argc) + + {{:ok, :call_method}, [argc]} -> + State.invoke_method_call(state, argc) + + {{:ok, :tail_call_method}, [argc]} -> + State.invoke_tail_method_call(state, argc) + + {{:ok, :apply}, [1]} -> + with {:ok, arg_array, state} <- State.pop(state), + {:ok, new_target, state} <- State.pop(state), + {:ok, fun, state} <- State.pop(state) do + {result, state} = + State.bind( + state, + Builder.temp_name(state.temp), + State.compiler_call(state, :apply_super, [ + fun, + new_target, + Builder.remote_call(QuickBEAM.VM.Heap, :to_list, [arg_array]) + ]) + ) + + state = + State.update_ctx( + state, + State.compiler_call(state, :update_this, [result]) + ) + + {:ok, State.push(state, result)} + end + + {{:ok, :apply}, [_magic]} -> + with {:ok, arg_array, state} <- State.pop(state), + {:ok, this_obj, state} <- State.pop(state), + {:ok, fun, state} <- State.pop(state) do + State.effectful_push( + state, + Builder.remote_call(QuickBEAM.VM.Invocation, :invoke_method_runtime, [ + State.ctx_expr(state), + fun, + this_obj, + Builder.remote_call(QuickBEAM.VM.Heap, :to_list, [arg_array]) + ]) + ) + end + + {{:ok, :apply_eval}, [_scope_idx]} -> + with {:ok, arg_array, state} <- State.pop(state), + {:ok, fun, state} <- State.pop(state) do + State.effectful_push( + state, + Builder.remote_call(QuickBEAM.VM.Invocation, :invoke_runtime, [ + State.ctx_expr(state), + fun, + Builder.remote_call(QuickBEAM.VM.Heap, :to_list, [arg_array]) + ]) + ) + end + + {{:ok, :eval}, [argc | _scope_args]} -> + with {:ok, args, _types, state} <- State.pop_n_typed(state, argc + 1) do + [eval_ref | call_args] = Enum.reverse(args) + + State.effectful_push( + state, + Builder.remote_call(QuickBEAM.VM.Invocation, :invoke_runtime, [ + State.ctx_expr(state), + eval_ref, + Builder.list_expr(call_args) + ]) + ) + end + + {{:ok, :import}, []} -> + with {:ok, _meta, state} <- State.pop(state), + {:ok, specifier, state} <- State.pop(state) do + State.effectful_push( + state, + State.compiler_call(state, :import_module, [specifier]) + ) + end + + {{:ok, :return}, []} -> + State.return_top(state) + + {{:ok, :return_undef}, []} -> + {:done, Enum.reverse([Builder.atom(:undefined) | state.body])} + + _ -> + :not_handled + end + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops/classes.ex b/lib/quickbeam/vm/compiler/lowering/ops/classes.ex new file mode 100644 index 000000000..9fb7be82e --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops/classes.ex @@ -0,0 +1,75 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops.Classes do + @moduledoc "Class definition opcodes: define_class, define_method, add_brand, check_brand, init_ctor." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, State} + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(state, name_args) do + case name_args do + {{:ok, :define_class}, [atom_idx, _flags]} -> + State.define_class_call(state, atom_idx) + + {{:ok, :define_class_computed}, [atom_idx, _flags]} -> + lower_define_class_computed(state, atom_idx) + + {{:ok, :define_method}, [atom_idx, flags]} -> + State.define_method_call(state, Builder.atom_name(state, atom_idx), flags) + + {{:ok, :define_method_computed}, [flags]} -> + State.define_method_computed_call(state, flags) + + {{:ok, :add_brand}, []} -> + State.add_brand(state) + + {{:ok, :check_brand}, []} -> + lower_check_brand(state) + + {{:ok, :init_ctor}, []} -> + State.effectful_push( + state, + State.compiler_call(state, :init_ctor, []), + :object + ) + + _ -> + :not_handled + end + end + + defp lower_define_class_computed(state, atom_idx) do + with {:ok, ctor, state} <- State.pop(state), + {:ok, parent_ctor, state} <- State.pop(state), + {:ok, _computed_name, state} <- State.pop(state) do + {pair, state} = + State.bind( + state, + Builder.temp_name(state.temp), + State.compiler_call(state, :define_class, [ + ctor, + parent_ctor, + Builder.literal(atom_idx) + ]) + ) + + {:ok, + %{ + state + | stack: [Builder.tuple_element(pair, 1), Builder.tuple_element(pair, 2) | state.stack], + stack_types: [:object, :function | state.stack_types] + }} + end + end + + defp lower_check_brand(state) do + with {:ok, state, brand} <- State.bind_stack_entry(state, 0), + {:ok, state, obj} <- State.bind_stack_entry(state, 1) do + {:ok, + %{ + state + | body: [State.compiler_call(state, :check_brand, [obj, brand]) | state.body] + }} + else + :error -> {:error, :check_brand_state_missing} + end + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops/control.ex b/lib/quickbeam/vm/compiler/lowering/ops/control.ex new file mode 100644 index 000000000..bc857ad33 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops/control.ex @@ -0,0 +1,67 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops.Control do + @moduledoc "Control flow opcodes: if_true, if_false, goto, catch, nip_catch, throw, throw_error, gosub, ret." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, State} + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(state, idx, next_entry, stack_depths, inline_targets, name_args) do + case name_args do + {{:ok, :if_false}, [target]} -> + State.branch(state, idx, next_entry, target, false, stack_depths) + + {{:ok, :if_false8}, [target]} -> + State.branch(state, idx, next_entry, target, false, stack_depths) + + {{:ok, :if_true}, [target]} -> + State.branch(state, idx, next_entry, target, true, stack_depths) + + {{:ok, :if_true8}, [target]} -> + State.branch(state, idx, next_entry, target, true, stack_depths) + + {{:ok, :goto}, [target]} -> + lower_goto(state, target, stack_depths, inline_targets) + + {{:ok, :goto8}, [target]} -> + lower_goto(state, target, stack_depths, inline_targets) + + {{:ok, :goto16}, [target]} -> + lower_goto(state, target, stack_depths, inline_targets) + + {{:ok, :nip_catch}, []} -> + State.nip_catch(state) + + {{:ok, :throw}, []} -> + State.throw_top(state) + + {{:ok, :throw_error}, [atom_idx, reason]} -> + {:done, + Enum.reverse([ + State.compiler_call(state, :throw_error, [ + Builder.literal(atom_idx), + Builder.literal(reason) + ]) + | state.body + ])} + + {{:ok, :gosub}, [target]} -> + State.goto(state, target, stack_depths) + + {{:ok, :ret}, []} -> + {:done, Enum.reverse([Builder.atom(:undefined) | state.body])} + + {{:ok, :catch}, [_target]} -> + {:ok, State.push(state, Builder.integer(0))} + + _ -> + :not_handled + end + end + + defp lower_goto(state, target, stack_depths, inline_targets) do + if MapSet.member?(inline_targets, target) do + {:inline_goto, target, state} + else + State.goto(state, target, stack_depths) + end + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops/generators.ex b/lib/quickbeam/vm/compiler/lowering/ops/generators.ex new file mode 100644 index 000000000..b5670c187 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops/generators.ex @@ -0,0 +1,111 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops.Generators do + @moduledoc "Generator and async opcodes: initial_yield, yield, yield_star, async_yield_star, await, return_async." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, State} + alias QuickBEAM.VM.Compiler.RuntimeHelpers + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(state, next_entry, stack_depths, name_args) do + case name_args do + {{:ok, :initial_yield}, []} -> + yield_throw(state, Builder.atom(:undefined), next_entry, stack_depths) + + {{:ok, :yield}, []} -> + with {:ok, val, _type, state} <- State.pop_typed(state) do + yield_throw(state, val, next_entry, stack_depths) + end + + {{:ok, :yield_star}, []} -> + with {:ok, val, _type, state} <- State.pop_typed(state) do + {:done, + Enum.reverse([ + Builder.remote_call(:erlang, :throw, [ + Builder.tuple_expr([ + Builder.atom(:generator_yield_star), + val, + yield_continuation(state, next_entry, stack_depths) + ]) + ]) + | state.body + ])} + end + + {{:ok, :async_yield_star}, []} -> + with {:ok, val, _type, state} <- State.pop_typed(state) do + {:done, + Enum.reverse([ + Builder.remote_call(:erlang, :throw, [ + Builder.tuple_expr([ + Builder.atom(:generator_yield_star), + val, + yield_continuation(state, next_entry, stack_depths) + ]) + ]) + | state.body + ])} + end + + {{:ok, :await}, []} -> + with {:ok, val, _type, state} <- State.pop_typed(state) do + State.effectful_push( + state, + Builder.remote_call(RuntimeHelpers, :await, [ + State.ctx_expr(state), + val + ]) + ) + end + + {{:ok, :return_async}, []} -> + with {:ok, val, _state} <- State.pop(state) do + {:done, + Enum.reverse([ + Builder.remote_call(:erlang, :throw, [ + Builder.tuple_expr([Builder.atom(:generator_return), val]) + ]) + | state.body + ])} + end + + _ -> + :not_handled + end + end + + defp yield_throw(state, val, next_entry, stack_depths) do + {:done, + Enum.reverse([ + Builder.remote_call(:erlang, :throw, [ + Builder.tuple_expr([ + Builder.atom(:generator_yield), + val, + yield_continuation(state, next_entry, stack_depths) + ]) + ]) + | state.body + ])} + end + + defp yield_continuation(state, next_entry, stack_depths) do + arg_var = Builder.var("YieldArg") + false_var = Builder.atom(false) + + ctx = State.ctx_expr(state) + slots = State.current_slots(state) + stack = [false_var, arg_var | State.current_stack(state)] + captures = State.current_capture_cells(state) + + expected_depth = Map.get(stack_depths, next_entry) + + if expected_depth && expected_depth == length(stack) do + call = + Builder.local_call(Builder.block_name(next_entry), [ + ctx | slots ++ stack ++ captures + ]) + + {:fun, 1, {:clauses, [{:clause, 1, [arg_var], [], [call]}]}} + else + {:fun, 1, {:clauses, [{:clause, 1, [arg_var], [], [Builder.atom(:undefined)]}]}} + end + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops/globals.ex b/lib/quickbeam/vm/compiler/lowering/ops/globals.ex new file mode 100644 index 000000000..ba8e8d731 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops/globals.ex @@ -0,0 +1,218 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops.Globals do + @moduledoc "Global variable and var-ref opcodes: get_var, put_var, define_var, get_var_ref, make_*_ref, get/put_ref_value." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, State} + alias QuickBEAM.VM.Compiler.RuntimeHelpers + alias QuickBEAM.VM.GlobalEnv + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(state, name_args) do + case name_args do + {{:ok, :get_var}, [atom_idx]} -> + name = Builder.atom_name(state, atom_idx) + + if is_binary(name) do + {:ok, State.push(state, inline_get_var(state, name))} + else + {:ok, + State.push( + state, + State.compiler_call(state, :get_var, [Builder.literal(name)]) + )} + end + + {{:ok, :get_var_undef}, [atom_idx]} -> + name = Builder.atom_name(state, atom_idx) + + if is_binary(name) do + {:ok, State.push(state, inline_get_var_undef(state, name))} + else + {:ok, + State.push( + state, + State.compiler_call(state, :get_var_undef, [Builder.literal(name)]) + )} + end + + {{:ok, :put_var}, [atom_idx]} -> + lower_put_var(state, atom_idx) + + {{:ok, :put_var_init}, [atom_idx]} -> + lower_put_var(state, atom_idx) + + {{:ok, :define_func}, [atom_idx, _flags]} -> + lower_put_var(state, atom_idx) + + {{:ok, :define_var}, [atom_idx, _scope]} -> + {:ok, + State.update_ctx( + state, + Builder.remote_call(GlobalEnv, :define_var, [ + State.ctx_expr(state), + Builder.literal(atom_idx) + ]) + )} + + {{:ok, :check_define_var}, [atom_idx, _scope]} -> + {:ok, + State.update_ctx( + state, + Builder.remote_call(GlobalEnv, :check_define_var, [ + State.ctx_expr(state), + Builder.literal(atom_idx) + ]) + )} + + {{:ok, name}, [idx]} + when name in [:get_var_ref, :get_var_ref0, :get_var_ref1, :get_var_ref2, :get_var_ref3] -> + {expr, state} = State.inline_get_var_ref(state, idx) + {:ok, State.push(state, expr)} + + {{:ok, :get_var_ref_check}, [idx]} -> + {expr, state} = State.inline_get_var_ref(state, idx) + {:ok, State.push(state, expr)} + + {{:ok, name}, [idx]} + when name in [ + :put_var_ref, + :put_var_ref0, + :put_var_ref1, + :put_var_ref2, + :put_var_ref3, + :put_var_ref_check, + :put_var_ref_check_init + ] -> + lower_put_var_ref(state, idx) + + {{:ok, name}, [idx]} + when name in [:set_var_ref, :set_var_ref0, :set_var_ref1, :set_var_ref2, :set_var_ref3] -> + lower_set_var_ref(state, idx) + + {{:ok, :make_loc_ref}, [_atom_idx, var_idx]} -> + lower_make_loc_ref(state, var_idx) + + {{:ok, :make_arg_ref}, [_atom_idx, var_idx]} -> + lower_make_arg_ref(state, var_idx) + + {{:ok, :make_var_ref}, [atom_idx]} -> + State.effectful_push( + state, + State.compiler_call(state, :make_var_ref, [Builder.literal(atom_idx)]), + :unknown + ) + + {{:ok, :make_var_ref}, [_atom_idx, var_idx]} -> + lower_make_loc_ref(state, var_idx) + + {{:ok, :make_var_ref_ref}, [_atom_idx, var_idx]} -> + lower_make_var_ref_ref(state, var_idx) + + {{:ok, :get_ref_value}, []} -> + lower_get_ref_value(state) + + {{:ok, :put_ref_value}, []} -> + lower_put_ref_value(state) + + {{:ok, :delete_var}, [_atom_idx]} -> + {:ok, State.push(state, Builder.atom(true), :boolean)} + + _ -> + :not_handled + end + end + + defp lower_put_var(state, atom_idx) do + with {:ok, val, _type, state} <- State.pop_typed(state) do + {:ok, + State.update_ctx( + state, + Builder.remote_call(GlobalEnv, :put, [ + State.ctx_expr(state), + Builder.literal(atom_idx), + val + ]) + )} + end + end + + defp lower_put_var_ref(state, idx) do + with {:ok, val, _type, state} <- State.pop_typed(state) do + {:ok, + %{ + state + | body: [ + State.compiler_call(state, :put_var_ref, [Builder.literal(idx), val]) | state.body + ] + }} + end + end + + defp lower_set_var_ref(state, idx) do + with {:ok, val, _type, state} <- State.pop_typed(state) do + State.effectful_push( + state, + State.compiler_call(state, :set_var_ref, [Builder.literal(idx), val]) + ) + end + end + + defp lower_make_loc_ref(state, idx) do + State.effectful_push( + state, + State.compiler_call(state, :make_loc_ref, [Builder.literal(idx)]), + :unknown + ) + end + + defp lower_make_arg_ref(state, idx) do + State.effectful_push( + state, + State.compiler_call(state, :make_arg_ref, [Builder.literal(idx)]), + :unknown + ) + end + + defp lower_make_var_ref_ref(state, idx) do + State.effectful_push( + state, + State.compiler_call(state, :make_var_ref_ref, [Builder.literal(idx)]), + :unknown + ) + end + + defp lower_get_ref_value(state) do + with {:ok, ref, state} <- State.pop(state) do + State.effectful_push( + state, + State.compiler_call(state, :get_ref_value, [ref]) + ) + end + end + + defp lower_put_ref_value(state) do + with {:ok, val, state} <- State.pop(state), + {:ok, ref, state} <- State.pop(state) do + {:ok, + %{ + state + | body: [State.compiler_call(state, :put_ref_value, [val, ref]) | state.body] + }} + end + end + + defp inline_get_var(state, name) do + Builder.remote_call(RuntimeHelpers, :get_global, [ + {:call, 1, {:remote, 1, {:atom, 1, :erlang}, {:atom, 1, :map_get}}, + [{:atom, 1, :globals}, State.ctx_expr(state)]}, + Builder.literal(name) + ]) + end + + defp inline_get_var_undef(state, name) do + Builder.remote_call(RuntimeHelpers, :get_global_undef, [ + {:call, 1, {:remote, 1, {:atom, 1, :erlang}, {:atom, 1, :map_get}}, + [{:atom, 1, :globals}, State.ctx_expr(state)]}, + Builder.literal(name) + ]) + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops/iterators.ex b/lib/quickbeam/vm/compiler/lowering/ops/iterators.ex new file mode 100644 index 000000000..ccfe80ed1 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops/iterators.ex @@ -0,0 +1,162 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops.Iterators do + @moduledoc "Iterator and for-in/of opcodes." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, State} + alias QuickBEAM.VM.ObjectModel.Get + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(state, name_args) do + case name_args do + {{:ok, :for_in_start}, []} -> + lower_for_in_start(state) + + {{:ok, :for_in_next}, []} -> + lower_for_in_next(state) + + {{:ok, :for_of_start}, []} -> + lower_for_of_start(state) + + {{:ok, :for_of_next}, [iter_idx]} -> + lower_for_of_next(state, iter_idx) + + {{:ok, :for_await_of_start}, []} -> + with {:ok, obj, _type, state} <- State.pop_typed(state) do + State.effectful_push(state, State.compiler_call(state, :for_of_start, [obj])) + end + + {{:ok, :iterator_close}, []} -> + lower_iterator_close(state) + + {{:ok, :iterator_check_object}, []} -> + {:ok, state} + + {{:ok, :iterator_get_value_done}, []} -> + with {:ok, result, state} <- State.pop(state) do + done = + Builder.remote_call(Get, :get, [ + result, + Builder.literal("done") + ]) + + value = + Builder.remote_call(Get, :get, [ + result, + Builder.literal("value") + ]) + + {:ok, state |> State.push(done) |> State.push(value)} + end + + {{:ok, :iterator_next}, []} -> + with {:ok, iter, state} <- State.pop(state) do + next_fn = + Builder.remote_call(Get, :get, [ + iter, + Builder.literal("next") + ]) + + State.effectful_push( + state, + Builder.remote_call(QuickBEAM.VM.Runtime, :call_callback, [ + next_fn, + Builder.list_expr([]) + ]) + ) + end + + {{:ok, :iterator_call}, [_method]} -> + with {:ok, iter, state} <- State.pop(state) do + {:ok, State.emit(state, State.compiler_call(state, :iterator_close, [iter]))} + end + + {{:ok, :rest}, [start_idx]} -> + State.effectful_push( + state, + State.compiler_call(state, :rest, [Builder.literal(start_idx)]), + :object + ) + + _ -> + :not_handled + end + end + + defp lower_for_in_start(state) do + with {:ok, obj, _type, state} <- State.pop_typed(state) do + {:ok, State.push(state, State.compiler_call(state, :for_in_start, [obj]), :unknown)} + end + end + + defp lower_for_in_next(state) do + case State.bind_stack_entry(state, 0) do + {:ok, state, iter} -> + {result, state} = + State.bind( + state, + Builder.temp_name(state.temp), + State.compiler_call(state, :for_in_next, [iter]) + ) + + state = %{ + state + | stack: List.replace_at(state.stack, 0, Builder.tuple_element(result, 3)), + stack_types: List.replace_at(state.stack_types, 0, :unknown) + } + + state = State.push(state, Builder.tuple_element(result, 2), :unknown) + state = State.push(state, Builder.tuple_element(result, 1), :boolean) + {:ok, state} + + :error -> + {:error, :for_in_state_missing} + end + end + + defp lower_for_of_start(state) do + with {:ok, obj, _type, state} <- State.pop_typed(state) do + {pair, state} = + State.bind( + state, + Builder.temp_name(state.temp), + State.compiler_call(state, :for_of_start, [obj]) + ) + + state = State.push(state, Builder.tuple_element(pair, 1), :object) + state = State.push(state, Builder.tuple_element(pair, 2), :function) + state = State.push(state, Builder.integer(0), :integer) + {:ok, state} + end + end + + defp lower_for_of_next(state, iter_idx) do + with {:ok, state, next_fn} <- State.bind_stack_entry(state, iter_idx + 1), + {:ok, state, iter_obj} <- State.bind_stack_entry(state, iter_idx + 2) do + {result, state} = + State.bind( + state, + Builder.temp_name(state.temp), + State.compiler_call(state, :for_of_next, [next_fn, iter_obj]) + ) + + state = %{ + state + | stack: List.replace_at(state.stack, iter_idx + 2, Builder.tuple_element(result, 3)), + stack_types: List.replace_at(state.stack_types, iter_idx + 2, :object) + } + + state = State.push(state, Builder.tuple_element(result, 2), :unknown) + state = State.push(state, Builder.tuple_element(result, 1), :boolean) + {:ok, state} + else + :error -> {:error, {:for_of_state_missing, iter_idx}} + end + end + + defp lower_iterator_close(state) do + with {:ok, _catch_offset, _catch_type, state} <- State.pop_typed(state), + {:ok, _next_fn, _next_type, state} <- State.pop_typed(state), + {:ok, iter_obj, _iter_type, state} <- State.pop_typed(state) do + {:ok, State.emit(state, State.compiler_call(state, :iterator_close, [iter_obj]))} + end + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops/locals.ex b/lib/quickbeam/vm/compiler/lowering/ops/locals.ex new file mode 100644 index 000000000..bf6a7bd26 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops/locals.ex @@ -0,0 +1,186 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops.Locals do + @moduledoc "Local and argument slot opcodes: get_loc, put_loc, set_loc, get_arg, put_arg, set_arg, etc." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, State} + + @tdz :__tdz__ + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(state, name_args) do + case name_args do + {{:ok, :get_arg}, [slot_idx]} -> + {:ok, + State.push(state, State.slot_expr(state, slot_idx), State.slot_type(state, slot_idx))} + + {{:ok, :get_arg0}, [slot_idx]} -> + {:ok, + State.push(state, State.slot_expr(state, slot_idx), State.slot_type(state, slot_idx))} + + {{:ok, :get_arg1}, [slot_idx]} -> + {:ok, + State.push(state, State.slot_expr(state, slot_idx), State.slot_type(state, slot_idx))} + + {{:ok, :get_arg2}, [slot_idx]} -> + {:ok, + State.push(state, State.slot_expr(state, slot_idx), State.slot_type(state, slot_idx))} + + {{:ok, :get_arg3}, [slot_idx]} -> + {:ok, + State.push(state, State.slot_expr(state, slot_idx), State.slot_type(state, slot_idx))} + + {{:ok, :get_loc}, [slot_idx]} -> + {:ok, + State.push(state, State.slot_expr(state, slot_idx), State.slot_type(state, slot_idx))} + + {{:ok, :get_loc0}, [slot_idx]} -> + {:ok, + State.push(state, State.slot_expr(state, slot_idx), State.slot_type(state, slot_idx))} + + {{:ok, :get_loc1}, [slot_idx]} -> + {:ok, + State.push(state, State.slot_expr(state, slot_idx), State.slot_type(state, slot_idx))} + + {{:ok, :get_loc2}, [slot_idx]} -> + {:ok, + State.push(state, State.slot_expr(state, slot_idx), State.slot_type(state, slot_idx))} + + {{:ok, :get_loc3}, [slot_idx]} -> + {:ok, + State.push(state, State.slot_expr(state, slot_idx), State.slot_type(state, slot_idx))} + + {{:ok, :get_loc8}, [slot_idx]} -> + {:ok, + State.push(state, State.slot_expr(state, slot_idx), State.slot_type(state, slot_idx))} + + {{:ok, :get_loc0_loc1}, [slot0, slot1]} -> + {:ok, + %{ + state + | stack: [State.slot_expr(state, slot1), State.slot_expr(state, slot0) | state.stack], + stack_types: [ + State.slot_type(state, slot1), + State.slot_type(state, slot0) | state.stack_types + ] + }} + + {{:ok, :get_loc_check}, [slot_idx]} -> + lower_get_loc_check(state, slot_idx) + + {{:ok, :set_loc_uninitialized}, [slot_idx]} -> + {:ok, State.put_uninitialized_slot(state, slot_idx, Builder.atom(@tdz))} + + {{:ok, :put_loc}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :put_loc0}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :put_loc1}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :put_loc2}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :put_loc3}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :put_loc8}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :put_arg}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :put_arg0}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :put_arg1}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :put_arg2}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :put_arg3}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :put_loc_check}, [slot_idx]} -> + lower_put_loc_check(state, slot_idx) + + {{:ok, :put_loc_check_init}, [slot_idx]} -> + State.assign_slot(state, slot_idx, false) + + {{:ok, :set_loc}, [slot_idx]} -> + State.assign_slot(state, slot_idx, true) + + {{:ok, :set_loc0}, [slot_idx]} -> + State.assign_slot(state, slot_idx, true) + + {{:ok, :set_loc1}, [slot_idx]} -> + State.assign_slot(state, slot_idx, true) + + {{:ok, :set_loc2}, [slot_idx]} -> + State.assign_slot(state, slot_idx, true) + + {{:ok, :set_loc3}, [slot_idx]} -> + State.assign_slot(state, slot_idx, true) + + {{:ok, :set_loc8}, [slot_idx]} -> + State.assign_slot(state, slot_idx, true) + + {{:ok, :set_arg}, [slot_idx]} -> + State.assign_slot(state, slot_idx, true) + + {{:ok, :set_arg0}, [slot_idx]} -> + State.assign_slot(state, slot_idx, true) + + {{:ok, :set_arg1}, [slot_idx]} -> + State.assign_slot(state, slot_idx, true) + + {{:ok, :set_arg2}, [slot_idx]} -> + State.assign_slot(state, slot_idx, true) + + {{:ok, :set_arg3}, [slot_idx]} -> + State.assign_slot(state, slot_idx, true) + + {{:ok, :close_loc}, [slot_idx]} -> + alias QuickBEAM.VM.Compiler.Lowering.Captures + Captures.close_capture_cell(state, slot_idx) + + {{:ok, :inc_loc}, [slot_idx]} -> + State.inc_slot(state, slot_idx) + + {{:ok, :dec_loc}, [slot_idx]} -> + State.dec_slot(state, slot_idx) + + {{:ok, :add_loc}, [slot_idx]} -> + State.add_to_slot(state, slot_idx) + + _ -> + :not_handled + end + end + + defp lower_get_loc_check(state, slot_idx) do + slot_expr = State.slot_expr(state, slot_idx) + slot_type = State.slot_type(state, slot_idx) + + expr = + if State.slot_initialized?(state, slot_idx) do + slot_expr + else + State.compiler_call(state, :ensure_initialized_local!, [slot_expr]) + end + + {:ok, State.push(state, expr, slot_type)} + end + + defp lower_put_loc_check(state, slot_idx) do + wrapper = + if State.slot_initialized?(state, slot_idx) do + nil + else + :ensure_initialized_local! + end + + State.assign_slot(state, slot_idx, false, wrapper) + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops/objects.ex b/lib/quickbeam/vm/compiler/lowering/ops/objects.ex new file mode 100644 index 000000000..608f8bbb9 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops/objects.ex @@ -0,0 +1,244 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops.Objects do + @moduledoc "Object and array manipulation opcodes: get/put_field, get/put_array_el, define_field, set_name, set_proto, get/put_super, private fields, delete, in, instanceof." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, State} + alias QuickBEAM.VM.Compiler.RuntimeHelpers + alias QuickBEAM.VM.ObjectModel.{Class, Delete, Get, Private, Put} + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(state, name_args) do + case name_args do + {{:ok, :object}, []} -> + {obj, state} = + State.bind( + state, + Builder.temp_name(state.temp), + Builder.remote_call(QuickBEAM.VM.Heap, :wrap, [Builder.literal(%{})]) + ) + + {:ok, State.push(state, obj, {:shaped_object, %{}})} + + {{:ok, :array_from}, [argc]} -> + State.array_from_call(state, argc) + + {{:ok, :regexp}, []} -> + State.regexp_literal(state) + + {{:ok, :special_object}, [type]} -> + {:ok, + State.push( + state, + State.compiler_call(state, :special_object, [Builder.literal(type)]), + special_object_type(type) + )} + + {{:ok, :set_name}, [atom_idx]} -> + State.set_name_atom(state, Builder.atom_name(state, atom_idx)) + + {{:ok, :set_name_computed}, []} -> + State.set_name_computed(state) + + {{:ok, :set_home_object}, []} -> + State.set_home_object(state) + + {{:ok, :get_super}, []} -> + State.unary_call(state, RuntimeHelpers, :get_super) + + {{:ok, :get_super_value}, []} -> + lower_get_super_value(state) + + {{:ok, :put_super_value}, []} -> + lower_put_super_value(state) + + {{:ok, :get_field}, [atom_idx]} -> + State.get_field_call(state, Builder.literal(Builder.atom_name(state, atom_idx))) + + {{:ok, :get_field2}, [atom_idx]} -> + State.get_field2(state, Builder.literal(Builder.atom_name(state, atom_idx))) + + {{:ok, :put_field}, [atom_idx]} -> + State.put_field_call(state, Builder.literal(Builder.atom_name(state, atom_idx))) + + {{:ok, :define_field}, [atom_idx]} -> + State.define_field_name_call(state, Builder.literal(Builder.atom_name(state, atom_idx))) + + {{:ok, :get_array_el}, []} -> + State.binary_call(state, Put, :get_element) + + {{:ok, :get_array_el2}, []} -> + State.get_array_el2(state) + + {{:ok, :put_array_el}, []} -> + State.put_array_el_call(state) + + {{:ok, :define_array_el}, []} -> + State.define_array_el_call(state) + + {{:ok, :append}, []} -> + State.append_call(state) + + {{:ok, :copy_data_properties}, [mask]} -> + State.copy_data_properties_call(state, mask) + + {{:ok, :set_proto}, []} -> + lower_set_proto(state) + + {{:ok, :check_ctor_return}, []} -> + lower_check_ctor_return(state) + + {{:ok, :check_ctor}, []} -> + {:ok, state} + + {{:ok, :to_object}, []} -> + {:ok, state} + + {{:ok, :to_propkey}, []} -> + {:ok, state} + + {{:ok, :to_propkey2}, []} -> + {:ok, state} + + {{:ok, :get_length}, []} -> + State.get_length_call(state) + + {{:ok, :instanceof}, []} -> + State.binary_call(state, RuntimeHelpers, :instanceof) + + {{:ok, :in}, []} -> + State.in_call(state) + + {{:ok, :delete}, []} -> + State.delete_call(state) + + {{:ok, :get_private_field}, []} -> + lower_get_private_field(state) + + {{:ok, :put_private_field}, []} -> + lower_put_private_field(state) + + {{:ok, :define_private_field}, []} -> + lower_define_private_field(state) + + {{:ok, :private_in}, []} -> + lower_private_in(state) + + _ -> + :not_handled + end + end + + defp special_object_type(2), do: :self_fun + defp special_object_type(3), do: :function + defp special_object_type(type) when type in [0, 1, 5, 6, 7], do: :object + defp special_object_type(_), do: :unknown + + defp lower_set_proto(state) do + with {:ok, proto, state} <- State.pop(state), + {:ok, obj, _obj_type, state} <- State.pop_typed(state) do + {:ok, + %{ + state + | body: [State.compiler_call(state, :set_proto, [obj, proto]) | state.body], + stack: [obj | state.stack], + stack_types: [:object | state.stack_types] + }} + end + end + + defp lower_get_super_value(state) do + with {:ok, key, state} <- State.pop(state), + {:ok, proto, state} <- State.pop(state), + {:ok, this_obj, state} <- State.pop(state) do + State.effectful_push( + state, + Builder.remote_call(Class, :get_super_value, [proto, this_obj, key]) + ) + end + end + + defp lower_put_super_value(state) do + with {:ok, val, state} <- State.pop(state), + {:ok, key, state} <- State.pop(state), + {:ok, proto_obj, state} <- State.pop(state), + {:ok, this_obj, state} <- State.pop(state) do + {:ok, + %{ + state + | body: [ + Builder.remote_call(Class, :put_super_value, [proto_obj, this_obj, key, val]) + | state.body + ] + }} + end + end + + defp lower_check_ctor_return(state) do + with {:ok, val, state} <- State.pop(state) do + {pair, state} = + State.bind( + state, + Builder.temp_name(state.temp), + Builder.remote_call(Class, :check_ctor_return, [val]) + ) + + {:ok, + %{ + state + | stack: [Builder.tuple_element(pair, 1), Builder.tuple_element(pair, 2) | state.stack], + stack_types: [:unknown, :unknown | state.stack_types] + }} + end + end + + defp lower_get_private_field(state) do + with {:ok, key, state} <- State.pop(state), + {:ok, obj, state} <- State.pop(state) do + State.effectful_push( + state, + State.compiler_call(state, :get_private_field, [obj, key]) + ) + end + end + + defp lower_put_private_field(state) do + with {:ok, key, state} <- State.pop(state), + {:ok, val, state} <- State.pop(state), + {:ok, obj, state} <- State.pop(state) do + {:ok, + %{ + state + | body: [State.compiler_call(state, :put_private_field, [obj, key, val]) | state.body] + }} + end + end + + defp lower_define_private_field(state) do + with {:ok, val, state} <- State.pop(state), + {:ok, key, state} <- State.pop(state), + {:ok, obj, _obj_type, state} <- State.pop_typed(state) do + {:ok, + %{ + state + | body: [State.compiler_call(state, :define_private_field, [obj, key, val]) | state.body], + stack: [obj | state.stack], + stack_types: [:object | state.stack_types] + }} + end + end + + defp lower_private_in(state) do + with {:ok, key, state} <- State.pop(state), + {:ok, obj, state} <- State.pop(state) do + {:ok, + State.push( + state, + Builder.remote_call(Private, :has_field?, [obj, key]), + :boolean + )} + end + end + + # Suppress unused alias warning — Delete is referenced via the module attribute path + _ = Delete + _ = Get +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops/stack.ex b/lib/quickbeam/vm/compiler/lowering/ops/stack.ex new file mode 100644 index 000000000..6d0099ec7 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops/stack.ex @@ -0,0 +1,385 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops.Stack do + @moduledoc "Stack manipulation opcodes: push constants, dup, drop, swap, rot, perm, insert, nip, nop." + + alias QuickBEAM.VM.Bytecode + alias QuickBEAM.VM.Compiler.Analysis.Types, as: AnalysisTypes + alias QuickBEAM.VM.Compiler.Lowering.{Builder, Captures, State} + alias QuickBEAM.VM.Compiler.RuntimeHelpers + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(state, constants, arg_count, name_args) do + case name_args do + {{:ok, :push_i32}, [value]} -> + {:ok, State.push(state, Builder.integer(value))} + + {{:ok, :push_i16}, [value]} -> + {:ok, State.push(state, Builder.integer(value))} + + {{:ok, :push_i8}, [value]} -> + {:ok, State.push(state, Builder.integer(value))} + + {{:ok, :push_minus1}, [_]} -> + {:ok, State.push(state, Builder.integer(-1))} + + {{:ok, :push_0}, [_]} -> + {:ok, State.push(state, Builder.integer(0))} + + {{:ok, :push_1}, [_]} -> + {:ok, State.push(state, Builder.integer(1))} + + {{:ok, :push_2}, [_]} -> + {:ok, State.push(state, Builder.integer(2))} + + {{:ok, :push_3}, [_]} -> + {:ok, State.push(state, Builder.integer(3))} + + {{:ok, :push_4}, [_]} -> + {:ok, State.push(state, Builder.integer(4))} + + {{:ok, :push_5}, [_]} -> + {:ok, State.push(state, Builder.integer(5))} + + {{:ok, :push_6}, [_]} -> + {:ok, State.push(state, Builder.integer(6))} + + {{:ok, :push_7}, [_]} -> + {:ok, State.push(state, Builder.integer(7))} + + {{:ok, :push_true}, []} -> + {:ok, State.push(state, Builder.atom(true))} + + {{:ok, :push_false}, []} -> + {:ok, State.push(state, Builder.atom(false))} + + {{:ok, :null}, []} -> + {:ok, State.push(state, Builder.atom(nil))} + + {{:ok, :undefined}, []} -> + {:ok, State.push(state, Builder.atom(:undefined))} + + {{:ok, :push_empty_string}, []} -> + {:ok, State.push(state, Builder.literal(""))} + + {{:ok, :push_bigint_i32}, [value]} -> + {:ok, + State.push(state, Builder.tuple_expr([Builder.atom(:bigint), Builder.integer(value)]))} + + {{:ok, :push_atom_value}, [atom_idx]} -> + {:ok, State.push(state, Builder.literal(Builder.atom_name(state, atom_idx)), :string)} + + {{:ok, :push_this}, []} -> + {:ok, State.push(state, State.compiler_call(state, :push_this, []), :object)} + + {{:ok, :push_const}, [const_idx]} -> + push_const(state, constants, arg_count, const_idx) + + {{:ok, :push_const8}, [const_idx]} -> + push_const(state, constants, arg_count, const_idx) + + {{:ok, :fclosure}, [const_idx]} -> + lower_fclosure(state, constants, arg_count, const_idx) + + {{:ok, :fclosure8}, [const_idx]} -> + lower_fclosure(state, constants, arg_count, const_idx) + + {{:ok, :private_symbol}, [atom_idx]} -> + {:ok, + State.push( + state, + State.compiler_call(state, :private_symbol, [ + Builder.literal(Builder.atom_name(state, atom_idx)) + ]), + :unknown + )} + + {{:ok, :dup}, []} -> + State.duplicate_top(state) + + {{:ok, :dup1}, []} -> + lower_dup1(state) + + {{:ok, :dup2}, []} -> + State.duplicate_top_two(state) + + {{:ok, :dup3}, []} -> + lower_dup3(state) + + {{:ok, :insert2}, []} -> + State.insert_top_two(state) + + {{:ok, :insert3}, []} -> + State.insert_top_three(state) + + {{:ok, :insert4}, []} -> + lower_insert4(state) + + {{:ok, :drop}, []} -> + State.drop_top(state) + + {{:ok, :nip}, []} -> + lower_nip(state) + + {{:ok, :nip1}, []} -> + lower_nip1(state) + + {{:ok, :swap}, []} -> + State.swap_top(state) + + {{:ok, :swap2}, []} -> + lower_swap2(state) + + {{:ok, :rot3l}, []} -> + lower_rot3l(state) + + {{:ok, :rot3r}, []} -> + lower_rot3r(state) + + {{:ok, :rot4l}, []} -> + lower_rot4l(state) + + {{:ok, :rot5l}, []} -> + lower_rot5l(state) + + {{:ok, :perm3}, []} -> + State.permute_top_three(state) + + {{:ok, :perm4}, []} -> + lower_perm4(state) + + {{:ok, :perm5}, []} -> + lower_perm5(state) + + {{:ok, :nop}, []} -> + {:ok, state} + + _ -> + :not_handled + end + end + + defp push_const(state, constants, arg_count, idx) do + case Enum.at(constants, idx) do + nil -> + {:error, {:unsupported_const, idx}} + + value + when is_integer(value) or is_float(value) or is_binary(value) or is_boolean(value) or + is_nil(value) -> + {:ok, State.push(state, Builder.literal(value))} + + :undefined -> + {:ok, State.push(state, Builder.atom(:undefined), :undefined)} + + %Bytecode.Function{} = fun when fun.closure_vars == [] -> + {:ok, State.push(state, Builder.literal(fun), AnalysisTypes.function_type(fun))} + + %Bytecode.Function{} -> + lower_fclosure(state, constants, arg_count, idx) + + _ -> + {:error, {:unsupported_const, idx}} + end + end + + defp lower_fclosure(state, constants, arg_count, const_idx) do + case Enum.at(constants, const_idx) do + %Bytecode.Function{closure_vars: []} = fun -> + {:ok, State.push(state, Builder.literal(fun), AnalysisTypes.function_type(fun))} + + %Bytecode.Function{} = fun -> + with {:ok, state, entries} <- + lower_closure_entries(state, arg_count, fun.closure_vars, []) do + closure = + Builder.tuple_expr([ + Builder.atom(:closure), + Builder.map_expr(Enum.reverse(entries)), + Builder.literal(fun) + ]) + + {:ok, State.push(state, closure, AnalysisTypes.function_type(fun))} + end + + nil -> + {:error, {:unsupported_const, const_idx}} + + other -> + {:error, {:unsupported_fclosure_const, const_idx, other}} + end + end + + defp lower_closure_entries(state, _arg_count, [], acc), do: {:ok, state, acc} + + defp lower_closure_entries( + state, + arg_count, + [%{closure_type: 2, var_idx: idx} = cv | rest], + acc + ) do + {parent_ref, state} = + State.bind( + state, + Builder.temp_name(state.temp), + Builder.remote_call(RuntimeHelpers, :get_var_ref, [ + State.ctx_expr(state), + Builder.literal(idx) + ]) + ) + + {cell, state} = + State.bind( + state, + Builder.temp_name(state.temp), + State.compiler_call(state, :ensure_capture_cell, [parent_ref, parent_ref]) + ) + + key = Builder.literal({cv.closure_type, cv.var_idx}) + lower_closure_entries(state, arg_count, rest, [{key, cell} | acc]) + end + + defp lower_closure_entries(state, arg_count, [cv | rest], acc) do + with {:ok, slot_idx} <- closure_slot_index(arg_count, cv), + {:ok, state, cell} <- Captures.ensure_capture_cell(state, slot_idx) do + key = Builder.literal({cv.closure_type, cv.var_idx}) + lower_closure_entries(state, arg_count, rest, [{key, cell} | acc]) + end + end + + defp closure_slot_index(_arg_count, %{closure_type: 1, var_idx: idx}), do: {:ok, idx} + defp closure_slot_index(arg_count, %{closure_type: 0, var_idx: idx}), do: {:ok, idx + arg_count} + + defp closure_slot_index(_arg_count, %{closure_type: 2, var_idx: idx}), + do: {:error, {:closure_var_ref_not_supported, idx}} + + defp closure_slot_index(_arg_count, %{closure_type: type, var_idx: idx}), + do: {:error, {:closure_type_not_supported, type, idx}} + + defp lower_dup1(state) do + with {:ok, a, ta, state} <- State.pop_typed(state), + {:ok, b, tb, state} <- State.pop_typed(state) do + {b_bound, state} = State.bind(state, Builder.temp_name(state.temp), b) + {a_bound, state} = State.bind(state, Builder.temp_name(state.temp), a) + + {:ok, + %{ + state + | stack: [a_bound, b_bound, a_bound, b_bound | state.stack], + stack_types: [ta, tb, ta, tb | state.stack_types] + }} + end + end + + defp lower_dup3(state) do + with {:ok, a, ta, state} <- State.pop_typed(state), + {:ok, b, tb, state} <- State.pop_typed(state), + {:ok, c, tc, state} <- State.pop_typed(state) do + {c_bound, state} = State.bind(state, Builder.temp_name(state.temp), c) + {b_bound, state} = State.bind(state, Builder.temp_name(state.temp), b) + {a_bound, state} = State.bind(state, Builder.temp_name(state.temp), a) + + {:ok, + %{ + state + | stack: [a_bound, b_bound, c_bound, a_bound, b_bound, c_bound | state.stack], + stack_types: [ta, tb, tc, ta, tb, tc | state.stack_types] + }} + end + end + + defp lower_insert4(state) do + with {:ok, a, ta, state} <- State.pop_typed(state), + {:ok, b, tb, state} <- State.pop_typed(state), + {:ok, c, tc, state} <- State.pop_typed(state), + {:ok, d, td, state} <- State.pop_typed(state) do + {a_bound, state} = State.bind(state, Builder.temp_name(state.temp), a) + + {:ok, + %{ + state + | stack: [a_bound, b, c, d, a_bound | state.stack], + stack_types: [ta, tb, tc, td, ta | state.stack_types] + }} + end + end + + defp lower_nip(%{stack: [a, _b | rest], stack_types: [ta, _tb | type_rest]} = state), + do: {:ok, %{state | stack: [a | rest], stack_types: [ta | type_rest]}} + + defp lower_nip(_state), do: {:error, :stack_underflow} + + defp lower_nip1(%{stack: [a, b, _c | rest], stack_types: [ta, tb, _tc | type_rest]} = state), + do: {:ok, %{state | stack: [a, b | rest], stack_types: [ta, tb | type_rest]}} + + defp lower_nip1(_state), do: {:error, :stack_underflow} + + defp lower_swap2( + %{ + stack: [a, b, c, d | rest], + stack_types: [ta, tb, tc, td | type_rest] + } = state + ), + do: {:ok, %{state | stack: [c, d, a, b | rest], stack_types: [tc, td, ta, tb | type_rest]}} + + defp lower_swap2(_state), do: {:error, :stack_underflow} + + defp lower_rot3l(%{stack: [a, b, c | rest], stack_types: [ta, tb, tc | type_rest]} = state), + do: {:ok, %{state | stack: [c, a, b | rest], stack_types: [tc, ta, tb | type_rest]}} + + defp lower_rot3l(_state), do: {:error, :stack_underflow} + + defp lower_rot3r(%{stack: [a, b, c | rest], stack_types: [ta, tb, tc | type_rest]} = state), + do: {:ok, %{state | stack: [b, c, a | rest], stack_types: [tb, tc, ta | type_rest]}} + + defp lower_rot3r(_state), do: {:error, :stack_underflow} + + defp lower_rot4l( + %{ + stack: [a, b, c, d | rest], + stack_types: [ta, tb, tc, td | type_rest] + } = state + ), + do: {:ok, %{state | stack: [d, a, b, c | rest], stack_types: [td, ta, tb, tc | type_rest]}} + + defp lower_rot4l(_state), do: {:error, :stack_underflow} + + defp lower_rot5l( + %{ + stack: [a, b, c, d, e | rest], + stack_types: [ta, tb, tc, td, te | type_rest] + } = state + ), + do: + {:ok, + %{ + state + | stack: [e, a, b, c, d | rest], + stack_types: [te, ta, tb, tc, td | type_rest] + }} + + defp lower_rot5l(_state), do: {:error, :stack_underflow} + + defp lower_perm4( + %{ + stack: [a, b, c, d | rest], + stack_types: [ta, tb, tc, td | type_rest] + } = state + ), + do: {:ok, %{state | stack: [a, c, d, b | rest], stack_types: [ta, tc, td, tb | type_rest]}} + + defp lower_perm4(_state), do: {:error, :stack_underflow} + + defp lower_perm5( + %{ + stack: [a, b, c, d, e | rest], + stack_types: [ta, tb, tc, td, te | type_rest] + } = state + ), + do: + {:ok, + %{ + state + | stack: [a, c, d, e, b | rest], + stack_types: [ta, tc, td, te, tb | type_rest] + }} + + defp lower_perm5(_state), do: {:error, :stack_underflow} +end diff --git a/lib/quickbeam/vm/compiler/lowering/ops/with_scope.ex b/lib/quickbeam/vm/compiler/lowering/ops/with_scope.ex new file mode 100644 index 000000000..56c145cf1 --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/ops/with_scope.ex @@ -0,0 +1,53 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Ops.WithScope do + @moduledoc "with-statement opcodes: with_get_var, with_put_var, with_delete_var, with_make_ref, with_get_ref, with_get_ref_undef." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, State} + alias QuickBEAM.VM.ObjectModel.{Delete, Get, Put} + + @doc "Lowers a bytecode instruction or function into compiler IR." + def lower(state, name_args) do + case name_args do + {{:ok, name}, [atom_idx, _target, _is_with]} + when name in [:with_get_var, :with_get_ref, :with_get_ref_undef] -> + with {:ok, obj, _type, state} <- State.pop_typed(state) do + key = State.compiler_call(state, :push_atom_value, [Builder.literal(atom_idx)]) + val = Builder.remote_call(Get, :get, [obj, key]) + + case name do + :with_get_var -> + {:ok, State.push(state, val)} + + :with_get_ref -> + {:ok, state |> State.push(obj) |> State.push(val)} + + :with_get_ref_undef -> + {:ok, state |> State.push(Builder.atom(:undefined)) |> State.push(val)} + end + end + + {{:ok, :with_put_var}, [atom_idx, _target, _is_with]} -> + with {:ok, obj, state} <- State.pop(state), + {:ok, val, state} <- State.pop(state) do + key = State.compiler_call(state, :push_atom_value, [Builder.literal(atom_idx)]) + + {:ok, State.emit(state, Builder.remote_call(Put, :put, [obj, key, val]))} + end + + {{:ok, :with_delete_var}, [atom_idx, _target, _is_with]} -> + with {:ok, obj, state} <- State.pop(state) do + key = State.compiler_call(state, :push_atom_value, [Builder.literal(atom_idx)]) + + State.effectful_push( + state, + Builder.remote_call(Delete, :delete_property, [obj, key]) + ) + end + + {{:ok, :with_make_ref}, _args} -> + {:error, {:unsupported_opcode, :with_make_ref}} + + _ -> + :not_handled + end + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/state.ex b/lib/quickbeam/vm/compiler/lowering/state.ex new file mode 100644 index 000000000..11fb6176a --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/state.ex @@ -0,0 +1,1176 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.State do + @moduledoc "Lowering accumulator: tracks the operand stack, slot bindings, and emitted body forms during a block compilation." + + alias QuickBEAM.VM.Compiler.Lowering.{Builder, Captures, Types} + alias QuickBEAM.VM.Compiler.RuntimeHelpers + + @line 1 + + defstruct [ + :body, + :ctx, + :slots, + :slot_types, + :slot_inits, + :capture_cells, + :stack, + :stack_types, + :temp, + :locals, + :closure_vars, + :atoms, + :arg_count, + :return_type + ] + + # ── Construction ── + + @doc "Creates a lowering state with slot, stack, capture, and type metadata." + def new(slot_count, stack_depth, opts \\ []) do + slots = + if slot_count == 0, + do: %{}, + else: Map.new(0..(slot_count - 1), fn idx -> {idx, Builder.slot_var(idx)} end) + + capture_cells = + if slot_count == 0, + do: %{}, + else: Map.new(0..(slot_count - 1), fn idx -> {idx, Builder.capture_var(idx)} end) + + stack = + if stack_depth == 0, + do: [], + else: Enum.map(0..(stack_depth - 1), &Builder.stack_var/1) + + arg_count = Keyword.get(opts, :arg_count, 0) + locals = Keyword.get(opts, :locals, []) + + %__MODULE__{ + body: [], + ctx: Builder.ctx_var(), + slots: slots, + slot_types: + Keyword.get(opts, :slot_types, Map.new(slots, fn {idx, _expr} -> {idx, :unknown} end)), + slot_inits: + Keyword.get(opts, :slot_inits, initial_slot_inits(slot_count, arg_count, locals)), + capture_cells: capture_cells, + stack: stack, + stack_types: Keyword.get(opts, :stack_types, List.duplicate(:unknown, stack_depth)), + temp: 0, + locals: locals, + closure_vars: Keyword.get(opts, :closure_vars, []), + atoms: Keyword.get(opts, :atoms), + arg_count: arg_count, + return_type: Keyword.get(opts, :return_type, :unknown) + } + end + + # ── Core state accessors and emitters ── + + @doc "Prepends one Erlang abstract-form expression to the accumulated body." + def emit(state, expr), do: %{state | body: [expr | state.body]} + def emit_all(state, exprs), do: %{state | body: Enum.reverse(exprs, state.body)} + + def ctx_expr(%{ctx: ctx}), do: ctx + def closure_vars_expr(%{closure_vars: cvs}), do: cvs + + def inline_get_var_ref(state, idx) do + cvs = closure_vars_expr(state) + + case Enum.at(cvs, idx) do + %{closure_type: type, var_idx: var_idx} -> + key = Builder.literal({type, var_idx}) + + {bound, state} = + bind(state, Builder.temp_name(state.temp), compiler_call(state, :get_capture, [key])) + + {bound, state} + + nil -> + {Builder.atom(:undefined), state} + end + end + + @doc "Builds a call to a compiler runtime helper using the current context expression." + def compiler_call(state, fun, args), + do: Builder.remote_call(RuntimeHelpers, fun, [ctx_expr(state) | args]) + + def bind(state, name, expr) do + var = Builder.var(name) + {var, %{state | body: [Builder.match(var, expr) | state.body], temp: state.temp + 1}} + end + + @doc "Binds a new context expression and marks it as the current context." + def update_ctx(state, expr) do + {ctx, state} = bind(state, "Ctx#{state.temp}", expr) + %{state | ctx: ctx} + end + + def current_stack(state), do: state.stack + + def block_jump_call(state, target, stack_depths) do + block_jump_call_values( + target, + stack_depths, + ctx_expr(state), + current_slots(state), + state.stack, + current_capture_cells(state) + ) + end + + @doc "Finishes the current block with an unconditional jump to another block." + def goto(state, target, stack_depths) do + with {:ok, call} <- block_jump_call(state, target, stack_depths) do + {:done, Enum.reverse([call | state.body])} + end + end + + def branch(%{stack: stack}, idx, next_entry, target, sense, _stack_depths) when stack == [] do + {:error, {:missing_branch_condition, idx, target, sense, next_entry}} + end + + def branch(state, _idx, next_entry, target, sense, _stack_depths) when is_nil(next_entry) do + {:error, {:missing_fallthrough_block, target, sense, state.body}} + end + + def branch(state, _idx, next_entry, target, sense, stack_depths) do + with {:ok, cond_expr, cond_type, state} <- pop_typed(state), + {:ok, target_call} <- block_jump_call(state, target, stack_depths), + {:ok, next_call} <- block_jump_call(state, next_entry, stack_depths) do + truthy = Builder.branch_condition(cond_expr, cond_type) + false_body = [target_call] + true_body = [next_call] + + body = + if sense do + Enum.reverse([Builder.branch_case(truthy, true_body, false_body) | state.body]) + else + Enum.reverse([Builder.branch_case(truthy, false_body, true_body) | state.body]) + end + + {:done, body} + end + end + + @doc "Lowers RegExp literal construction from pattern and flags stack values." + def regexp_literal(state) do + with {:ok, pattern, _pattern_type, state} <- pop_typed(state), + {:ok, flags, _flags_type, state} <- pop_typed(state) do + {:ok, push(state, Builder.tuple_expr([Builder.atom(:regexp), pattern, flags]), :unknown)} + end + end + + def add_to_slot(state, idx) do + with {:ok, expr, expr_type, state} <- pop_typed(state) do + {op_expr, result_type} = + specialize_binary( + :op_add, + slot_expr(state, idx), + slot_type(state, idx), + expr, + expr_type + ) + + update_slot(state, idx, op_expr, false, result_type) + end + end + + @doc "Lowers prefix increment of a local slot." + def inc_slot(state, idx), + do: + update_slot( + state, + idx, + compiler_call(state, :inc, [slot_expr(state, idx)]), + false, + if(slot_type(state, idx) == :integer, do: :integer, else: :number) + ) + + @doc "Lowers prefix decrement of a local slot." + def dec_slot(state, idx), + do: + update_slot( + state, + idx, + compiler_call(state, :dec, [slot_expr(state, idx)]), + false, + if(slot_type(state, idx) == :integer, do: :integer, else: :number) + ) + + @doc "Lowers property read and applies shaped-object fast paths when possible." + def get_field_call(state, key_expr) do + with {:ok, obj, type, state} <- pop_typed(state) do + key_str = extract_literal_string(key_expr) + + case {type, key_str} do + {{:shaped_object, _offsets, value_map}, key} + when is_binary(key) and is_map_key(value_map, key) -> + val_expr = Map.fetch!(value_map, key) + + if Types.pure_expr?(val_expr) do + {:ok, push(state, val_expr)} + else + {:ok, push(state, Builder.local_call(:op_get_field, [obj, key_expr]))} + end + + {{:shaped_object, offsets}, key} when is_binary(key) and is_map_key(offsets, key) -> + offset = Map.fetch!(offsets, key) + + id_var = Builder.var(Builder.temp_name(state.temp)) + vals_var = Builder.var(Builder.temp_name(state.temp + 1)) + state = %{state | temp: state.temp + 2} + + access_expr = + {:case, @line, obj, + [ + {:clause, @line, [{:tuple, @line, [{:atom, @line, :obj}, id_var]}], [], + [ + {:case, @line, + {:call, @line, {:remote, @line, {:atom, @line, :erlang}, {:atom, @line, :get}}, + [id_var]}, + [ + {:clause, @line, + [ + {:tuple, @line, + [ + {:atom, @line, :shape}, + {:var, @line, :_}, + {:var, @line, :_}, + vals_var, + {:var, @line, :_} + ]} + ], [], + [ + {:call, @line, + {:remote, @line, {:atom, @line, :erlang}, {:atom, @line, :element}}, + [{:integer, @line, offset + 1}, vals_var]} + ]}, + {:clause, @line, [{:var, @line, :_}], [], + [Builder.local_call(:op_get_field, [obj, key_expr])]} + ]} + ]}, + {:clause, @line, [{:var, @line, :_}], [], + [Builder.local_call(:op_get_field, [obj, key_expr])]} + ]} + + {:ok, push(state, access_expr)} + + _ -> + {:ok, push(state, Builder.local_call(:op_get_field, [obj, key_expr]))} + end + end + end + + @doc "Lowers property read while preserving both object and property result on the stack." + def get_field2(state, key_expr) do + with {:ok, obj, _type, state} <- pop_typed(state) do + field = Builder.local_call(:op_get_field, [obj, key_expr]) + + {:ok, + %{ + state + | stack: [field, obj | state.stack], + stack_types: [:unknown, :object | state.stack_types] + }} + end + end + + @doc "Lowers array element read while preserving receiver and element result on the stack." + def get_array_el2(state) do + with {:ok, idx, _idx_type, state} <- pop_typed(state), + {:ok, obj, _obj_type, state} <- pop_typed(state) do + {pair, state} = + bind( + state, + Builder.temp_name(state.temp), + compiler_call(state, :get_array_el2, [obj, idx]) + ) + + {:ok, + %{ + state + | stack: [Builder.tuple_element(pair, 1), Builder.tuple_element(pair, 2) | state.stack], + stack_types: [:unknown, :object | state.stack_types] + }} + end + end + + @doc "Lowers function-name assignment from an atom-table index." + def set_name_atom(state, atom_name) do + with {:ok, fun, fun_type, state} <- pop_typed(state) do + {:ok, + push( + state, + compiler_call(state, :set_function_name, [fun, Builder.literal(atom_name)]), + fun_type + )} + end + end + + @doc "Lowers function-name assignment from a computed property value." + def set_name_computed(state) do + with {:ok, fun, fun_type, state} <- pop_typed(state), + {:ok, name, name_type, state} <- pop_typed(state) do + named = compiler_call(state, :set_function_name_computed, [fun, name]) + + {:ok, + %{ + state + | stack: [named, name | state.stack], + stack_types: [fun_type, name_type | state.stack_types] + }} + end + end + + @doc "Lowers method home-object attachment for `super` support." + def set_home_object(state) do + with {:ok, state, method} <- bind_stack_entry(state, 0), + {:ok, state, target} <- bind_stack_entry(state, 1) do + {:ok, emit(state, compiler_call(state, :set_home_object, [method, target]))} + else + :error -> {:error, :set_home_object_state_missing} + end + end + + @doc "Lowers private brand attachment." + def add_brand(state) do + with {:ok, obj, state} <- pop(state), + {:ok, brand, state} <- pop(state) do + {:ok, emit(state, compiler_call(state, :add_brand, [obj, brand]))} + end + end + + def put_field_call(state, key_expr) do + with {:ok, val, _val_type, state} <- pop_typed(state), + {:ok, obj, _obj_type, state} <- pop_typed(state) do + {:ok, + emit(state, Builder.remote_call(QuickBEAM.VM.ObjectModel.Put, :put, [obj, key_expr, val]))} + end + end + + @doc "Lowers object field definition with an atom-table field name." + def define_field_name_call(state, key_expr) do + with {:ok, val, _val_type, state} <- pop_typed(state), + {:ok, obj, obj_type, state} <- pop_typed(state) do + key_str = extract_literal_string(key_expr) + + new_type = + case {obj_type, key_str} do + {{:shaped_object, offsets}, k} when is_binary(k) -> + new_offset = map_size(offsets) + {:shaped_object, Map.put(offsets, k, new_offset)} + + _ -> + :object + end + + {:ok, + state + |> emit( + Builder.remote_call(QuickBEAM.VM.ObjectModel.Put, :put_field, [obj, key_expr, val]) + ) + |> push(obj, new_type)} + end + end + + @doc "Lowers method/getter/setter definition with an atom-table name." + def define_method_call(state, method_name, flags) do + with {:ok, method, _method_type, state} <- pop_typed(state), + {:ok, target, _target_type, state} <- pop_typed(state) do + effectful_push( + state, + compiler_call(state, :define_method, [ + target, + method, + Builder.literal(method_name), + Builder.literal(flags) + ]), + :object + ) + end + end + + @doc "Lowers method/getter/setter definition with a computed name." + def define_method_computed_call(state, flags) do + with {:ok, method, state} <- pop(state), + {:ok, field_name, state} <- pop(state), + {:ok, target, state} <- pop(state) do + effectful_push( + state, + compiler_call(state, :define_method_computed, [ + target, + method, + field_name, + Builder.literal(flags) + ]) + ) + end + end + + @doc "Lowers class definition and constructor/prototype wiring." + def define_class_call(state, atom_idx) do + with {:ok, ctor, state} <- pop(state), + {:ok, parent_ctor, state} <- pop(state) do + {pair, state} = + bind( + state, + Builder.temp_name(state.temp), + compiler_call(state, :define_class, [ctor, parent_ctor, Builder.literal(atom_idx)]) + ) + + ctor = Builder.tuple_element(pair, 2) + ctor_type = Types.infer_expr_type(ctor) + + state = + case class_binding_slot(state, atom_idx) do + nil -> state + slot_idx -> update_slot!(state, slot_idx, ctor, ctor_type) + end + + {:ok, + %{ + state + | stack: [Builder.tuple_element(pair, 1), ctor | state.stack], + stack_types: [:object, ctor_type | state.stack_types] + }} + end + end + + @doc "Lowers array element assignment." + def put_array_el_call(state) do + with {:ok, val, _val_type, state} <- pop_typed(state), + {:ok, idx, _idx_type, state} <- pop_typed(state), + {:ok, obj, _obj_type, state} <- pop_typed(state) do + {:ok, emit(state, compiler_call(state, :put_array_el, [obj, idx, val]))} + end + end + + @doc "Lowers array element definition with descriptor metadata." + def define_array_el_call(state) do + with {:ok, val, _val_type, state} <- pop_typed(state), + {:ok, idx, idx_type, state} <- pop_typed(state), + {:ok, obj, _obj_type, state} <- pop_typed(state) do + {pair, state} = + bind( + state, + Builder.temp_name(state.temp), + compiler_call(state, :define_array_el, [obj, idx, val]) + ) + + {:ok, + %{ + state + | stack: [Builder.tuple_element(pair, 1), Builder.tuple_element(pair, 2) | state.stack], + stack_types: [idx_type, :object | state.stack_types] + }} + end + end + + @doc "Lowers conversion of an iterable or array-like value into an array object." + def array_from_call(state, argc) do + with {:ok, elems, _types, state} <- pop_n_typed(state, argc) do + {:ok, + push( + state, + compiler_call(state, :array_from, [Builder.list_expr(Enum.reverse(elems))]), + :object + )} + end + end + + @doc "Lowers the JavaScript `in` operator." + def in_call(state) do + with {:ok, obj, _obj_type, state} <- pop_typed(state), + {:ok, key, _key_type, state} <- pop_typed(state) do + {:ok, + push( + state, + Builder.remote_call(QuickBEAM.VM.ObjectModel.Put, :has_property, [obj, key]), + :boolean + )} + end + end + + @doc "Lowers array/object spread append into an aggregate literal." + def append_call(state) do + with {:ok, obj, _obj_type, state} <- pop_typed(state), + {:ok, idx, _idx_type, state} <- pop_typed(state), + {:ok, arr, _arr_type, state} <- pop_typed(state) do + {pair, state} = + bind( + state, + Builder.temp_name(state.temp), + compiler_call(state, :append_spread, [arr, idx, obj]) + ) + + {:ok, + %{ + state + | stack: [Builder.tuple_element(pair, 1), Builder.tuple_element(pair, 2) | state.stack], + stack_types: [:number, :object | state.stack_types] + }} + end + end + + @doc "Lowers object spread property copying." + def copy_data_properties_call(state, mask) do + target_idx = Bitwise.band(mask, 3) + source_idx = Bitwise.band(Bitwise.bsr(mask, 2), 7) + + with {:ok, state, target} <- bind_stack_entry(state, target_idx), + {:ok, state, source} <- bind_stack_entry(state, source_idx) do + {:ok, + %{ + state + | body: [compiler_call(state, :copy_data_properties, [target, source]) | state.body] + }} + else + :error -> {:error, {:copy_data_properties_missing, mask, target_idx, source_idx}} + end + end + + @doc "Lowers the JavaScript `delete` operator." + def delete_call(state) do + with {:ok, key, _key_type, state} <- pop_typed(state), + {:ok, obj, _obj_type, state} <- pop_typed(state) do + effectful_push(state, compiler_call(state, :delete_property, [obj, key]), :boolean) + end + end + + # ── Stack ── + + @doc "Pushes an expression and optional type onto the lowering operand stack." + def push(state, expr), do: push(state, expr, Types.infer_expr_type(expr)) + + def push(state, expr, type), + do: %{state | stack: [expr | state.stack], stack_types: [type | state.stack_types]} + + def pop_typed(%{stack: [expr | rest], stack_types: [type | type_rest]} = state), + do: {:ok, expr, type, %{state | stack: rest, stack_types: type_rest}} + + def pop_typed(_state), do: {:error, :stack_underflow} + + @doc "Helper for lowering accumulator: tracks the operand stack, slot bindings, and emitted body forms during a block compilation." + def pop(%{stack: [expr | rest], stack_types: [_type | type_rest]} = state), + do: {:ok, expr, %{state | stack: rest, stack_types: type_rest}} + + def pop(_state), do: {:error, :stack_underflow} + + @doc "Pops several operand-stack expressions preserving evaluation order." + def pop_n(state, 0), do: {:ok, [], state} + + def pop_n(state, count) when count > 0 do + with {:ok, expr, state} <- pop(state), + {:ok, rest, state} <- pop_n(state, count - 1) do + {:ok, [expr | rest], state} + end + end + + @doc "Pops several operand-stack expressions with their inferred types." + def pop_n_typed(state, 0), do: {:ok, [], [], state} + + def pop_n_typed(state, count) when count > 0 do + with {:ok, expr, type, state} <- pop_typed(state), + {:ok, rest, rest_types, state} <- pop_n_typed(state, count - 1) do + {:ok, [expr | rest], [type | rest_types], state} + end + end + + @doc "Binds a stack entry to a temporary variable when it must be evaluated once." + def bind_stack_entry(state, idx) do + case Enum.fetch(state.stack, idx) do + {:ok, expr} -> + {bound, state} = bind(state, Builder.temp_name(state.temp), expr) + {:ok, %{state | stack: List.replace_at(state.stack, idx, bound)}, bound} + + :error -> + :error + end + end + + @doc "Duplicates the top operand-stack expression." + def duplicate_top(state) do + with {:ok, expr, type, state} <- pop_typed(state) do + {bound, state} = bind(state, Builder.temp_name(state.temp), expr) + + {:ok, + %{ + state + | stack: [bound, bound | state.stack], + stack_types: [type, type | state.stack_types] + }} + end + end + + @doc "Duplicates the top two operand-stack expressions." + def duplicate_top_two(state) do + with {:ok, first, first_type, state} <- pop_typed(state), + {:ok, second, second_type, state} <- pop_typed(state) do + {second_bound, state} = bind(state, Builder.temp_name(state.temp), second) + {first_bound, state} = bind(state, Builder.temp_name(state.temp), first) + + {:ok, + %{ + state + | stack: [first_bound, second_bound, first_bound, second_bound | state.stack], + stack_types: [first_type, second_type, first_type, second_type | state.stack_types] + }} + end + end + + @doc "Reorders the top two operand-stack expressions for DUP-style bytecode operations." + def insert_top_two(state) do + with {:ok, first, first_type, state} <- pop_typed(state), + {:ok, second, second_type, state} <- pop_typed(state) do + {first_bound, state} = bind(state, Builder.temp_name(state.temp), first) + + {:ok, + %{ + state + | stack: [first_bound, second, first_bound | state.stack], + stack_types: [first_type, second_type, first_type | state.stack_types] + }} + end + end + + @doc "Reorders the top three operand-stack expressions for DUP-style bytecode operations." + def insert_top_three(state) do + with {:ok, first, first_type, state} <- pop_typed(state), + {:ok, second, second_type, state} <- pop_typed(state), + {:ok, third, third_type, state} <- pop_typed(state) do + {first_bound, state} = bind(state, Builder.temp_name(state.temp), first) + + {:ok, + %{ + state + | stack: [first_bound, second, third, first_bound | state.stack], + stack_types: [first_type, second_type, third_type, first_type | state.stack_types] + }} + end + end + + @doc "Drops the top operand-stack expression." + def drop_top(%{stack: [_ | rest], stack_types: [_ | type_rest]} = state), + do: {:ok, %{state | stack: rest, stack_types: type_rest}} + + def drop_top(_state), do: {:error, :stack_underflow} + + def swap_top(%{stack: [a, b | rest], stack_types: [ta, tb | type_rest]} = state), + do: {:ok, %{state | stack: [b, a | rest], stack_types: [tb, ta | type_rest]}} + + def swap_top(_state), do: {:error, :stack_underflow} + + @doc "Permutes the top three operand-stack expressions." + def permute_top_three( + %{stack: [a, b, c | rest], stack_types: [ta, tb, tc | type_rest]} = state + ), + do: {:ok, %{state | stack: [a, c, b | rest], stack_types: [ta, tc, tb | type_rest]}} + + def permute_top_three(_state), do: {:error, :stack_underflow} + + # ── Slots ── + + @doc "Stores an expression and type in a local slot." + def put_slot(state, idx, expr), do: put_slot(state, idx, expr, Types.infer_expr_type(expr)) + + def put_slot(state, idx, expr, type) do + %{ + state + | slots: Map.put(state.slots, idx, expr), + slot_types: Map.put(state.slot_types, idx, type), + slot_inits: Map.put(state.slot_inits, idx, true) + } + end + + @doc "Marks a local slot as temporal-dead-zone uninitialized." + def put_uninitialized_slot(state, idx, expr), + do: put_uninitialized_slot(state, idx, expr, Types.infer_expr_type(expr)) + + def put_uninitialized_slot(state, idx, expr, type) do + %{ + state + | slots: Map.put(state.slots, idx, expr), + slot_types: Map.put(state.slot_types, idx, type), + slot_inits: Map.put(state.slot_inits, idx, false) + } + end + + @doc "Returns the generated expression currently bound to a local slot." + def slot_expr(state, idx), do: Map.get(state.slots, idx, Builder.atom(:undefined)) + def slot_type(state, idx), do: Map.get(state.slot_types, idx, :unknown) + def slot_initialized?(state, idx), do: Map.get(state.slot_inits, idx, false) + + def put_capture_cell(state, idx, expr), + do: %{state | capture_cells: Map.put(state.capture_cells, idx, expr)} + + def capture_cell_expr(state, idx), + do: Map.get(state.capture_cells, idx, Builder.atom(:undefined)) + + @doc "Lowers assignment to a local slot and returns the assigned value on the stack." + def assign_slot(state, idx, keep?, wrapper \\ nil) do + with {:ok, expr, type, state} <- pop_typed(state) do + expr = + if wrapper, + do: compiler_call(state, wrapper, [expr]), + else: expr + + {slot_expr, state} = + if keep? or not Types.pure_expr?(expr) or Captures.slot_captured?(state, idx) do + bind(state, Builder.slot_name(idx, state.temp), expr) + else + {expr, state} + end + + state = put_slot(state, idx, slot_expr, type) + state = Captures.sync_capture_cell(state, idx, slot_expr) + state = if keep?, do: push(state, slot_expr, type), else: state + {:ok, state} + end + end + + @doc "Updates a local slot with an expression, initialization flag, and inferred type." + def update_slot(state, idx, expr), + do: update_slot(state, idx, expr, false, Types.infer_expr_type(expr)) + + def update_slot(state, idx, expr, keep?), + do: update_slot(state, idx, expr, keep?, Types.infer_expr_type(expr)) + + def update_slot(state, idx, expr, keep?, type) do + {slot_expr, state} = + if keep? or not Types.pure_expr?(expr) or Captures.slot_captured?(state, idx) do + bind(state, Builder.slot_name(idx, state.temp), expr) + else + {expr, state} + end + + state = put_slot(state, idx, slot_expr, type) + state = Captures.sync_capture_cell(state, idx, slot_expr) + state = if keep?, do: push(state, slot_expr, type), else: state + {:ok, state} + end + + @doc "Returns local slot expressions in block-call argument order." + def current_slots(state), do: ordered_values(state.slots) + def current_capture_cells(state), do: ordered_values(state.capture_cells) + + # ── Calls ── + + def nip_catch( + %{stack: [val, _catch_offset | rest], stack_types: [type, _ | type_rest]} = state + ), + do: {:ok, %{state | stack: [val | rest], stack_types: [type | type_rest]}} + + def nip_catch(_state), do: {:error, :stack_underflow} + + @doc "Lowers postfix increment/decrement of a local slot." + def post_update(state, fun) do + with {:ok, expr, type, state} <- pop_typed(state) do + if type == :integer do + op = if fun == :post_inc, do: :+, else: :- + + {new_val, state} = + bind(state, Builder.temp_name(state.temp), {:op, @line, op, expr, {:integer, @line, 1}}) + + {:ok, + %{ + state + | stack: [new_val, expr | state.stack], + stack_types: [:integer, :integer | state.stack_types] + }} + else + {pair, state} = + bind(state, Builder.temp_name(state.temp), compiler_call(state, fun, [expr])) + + {:ok, + %{ + state + | stack: [Builder.tuple_element(pair, 1), Builder.tuple_element(pair, 2) | state.stack], + stack_types: [:number, :number | state.stack_types] + }} + end + end + end + + @doc "Evaluates an expression for side effects and pushes the resulting temporary." + def effectful_push(state, expr), + do: effectful_push(state, expr, Types.infer_expr_type(expr)) + + def effectful_push(state, expr, type) do + {bound, state} = bind(state, Builder.temp_name(state.temp), expr) + {:ok, push(state, bound, type)} + end + + @doc "Lowers a unary operation through a runtime helper." + def unary_call(state, mod, fun, extra_args \\ []) do + with {:ok, expr, _type, state} <- pop_typed(state) do + {:ok, push(state, Builder.remote_call(mod, fun, [expr | extra_args]))} + end + end + + def get_length_call(state) do + with {:ok, expr, type, state} <- pop_typed(state) do + {result_expr, result_type} = specialize_get_length(expr, type) + {:ok, push(state, result_expr, result_type)} + end + end + + @doc "Lowers a unary operation through a generated local helper." + def unary_local_call(state, fun) do + with {:ok, expr, type, state} <- pop_typed(state) do + {result_expr, result_type} = specialize_unary(fun, expr, type) + {:ok, push(state, result_expr, result_type)} + end + end + + def binary_call(state, mod, fun) do + with {:ok, right, _right_type, state} <- pop_typed(state), + {:ok, left, _left_type, state} <- pop_typed(state) do + {:ok, push(state, Builder.remote_call(mod, fun, [left, right]))} + end + end + + @doc "Lowers a binary operation through a generated local helper." + def binary_local_call(state, fun) do + with {:ok, right, right_type, state} <- pop_typed(state), + {:ok, left, left_type, state} <- pop_typed(state) do + {result_expr, result_type} = specialize_binary(fun, left, left_type, right, right_type) + {:ok, push(state, result_expr, result_type)} + end + end + + @doc "Lowers a JavaScript function call." + def invoke_call(state, argc) do + with {:ok, args, arg_types, state} <- pop_n_typed(state, argc), + {:ok, fun, fun_type, state} <- pop_typed(state) do + invoke_call_expr(state, fun, fun_type, Enum.reverse(args), Enum.reverse(arg_types)) + end + end + + def invoke_constructor_call(state, argc) do + with {:ok, args, _arg_types, state} <- pop_n_typed(state, argc), + {:ok, new_target, _new_target_type, state} <- pop_typed(state), + {:ok, ctor, _ctor_type, state} <- pop_typed(state) do + effectful_push( + state, + compiler_call(state, :construct_runtime, [ + ctor, + new_target, + Builder.list_expr(Enum.reverse(args)) + ]), + :object + ) + end + end + + @doc "Lowers a tail-position JavaScript function call." + def invoke_tail_call(state, argc) do + with {:ok, args, arg_types, state} <- pop_n_typed(state, argc), + {:ok, fun, fun_type, %{stack: [], stack_types: []} = state} <- pop_typed(state) do + {:done, tail_call_expr(state, fun, fun_type, Enum.reverse(args), Enum.reverse(arg_types))} + else + {:ok, _fun, _fun_type, _state} -> {:error, :stack_not_empty_on_tail_call} + {:error, _} = error -> error + end + end + + @doc "Lowers a JavaScript method call with receiver handling." + def invoke_method_call(state, argc) do + with {:ok, args, _arg_types, state} <- pop_n_typed(state, argc), + {:ok, fun, fun_type, state} <- pop_typed(state), + {:ok, obj, _obj_type, state} <- pop_typed(state) do + effectful_push( + state, + Builder.remote_call(QuickBEAM.VM.Invocation, :invoke_method_runtime, [ + ctx_expr(state), + fun, + obj, + Builder.list_expr(Enum.reverse(args)) + ]), + function_return_type(fun_type, state.return_type) + ) + end + end + + @doc "Lowers a tail-position JavaScript method call with receiver handling." + def invoke_tail_method_call(state, argc) do + with {:ok, args, _arg_types, state} <- pop_n_typed(state, argc), + {:ok, fun, _fun_type, state} <- pop_typed(state), + {:ok, obj, _obj_type, %{stack: [], stack_types: []} = state} <- pop_typed(state) do + expr = + Builder.remote_call(QuickBEAM.VM.Invocation, :invoke_method_runtime, [ + ctx_expr(state), + fun, + obj, + Builder.list_expr(Enum.reverse(args)) + ]) + + {:done, Enum.reverse([expr | state.body])} + else + {:ok, _obj, _obj_type, _state} -> {:error, :stack_not_empty_on_tail_call} + {:error, _} = error -> error + end + end + + @doc "Builds block-call arguments from context, slots, stack, and captures." + def block_jump_call_values(target, stack_depths, ctx, slots, stack, capture_cells) do + expected_depth = Map.get(stack_depths, target) + actual_depth = length(stack) + + cond do + is_nil(expected_depth) -> + {:error, {:unknown_block_target, target}} + + expected_depth != actual_depth -> + {:error, {:stack_depth_mismatch, target, expected_depth, actual_depth}} + + true -> + {:ok, + Builder.local_call(Builder.block_name(target), [ + ctx | slots ++ stack ++ capture_cells + ])} + end + end + + @doc "Finishes the current block by returning the stack top." + def return_top(state) do + with {:ok, expr, _state} <- pop(state) do + {:done, Enum.reverse([expr | state.body])} + end + end + + def throw_top(state) do + with {:ok, expr, _state} <- pop(state) do + {:done, Enum.reverse([Builder.throw_js(expr) | state.body])} + end + end + + @doc "Selects a specialized local unary operator when type information allows it." + def specialize_unary(:op_neg, expr, :integer), do: {{:op, @line, :-, expr}, :integer} + def specialize_unary(:op_neg, expr, :number), do: {{:op, @line, :-, expr}, :number} + def specialize_unary(:op_plus, expr, type) when type in [:integer, :number], do: {expr, type} + def specialize_unary(fun, expr, _type), do: {Builder.local_call(fun, [expr]), :unknown} + + def specialize_binary(:op_add, left, :integer, right, :integer), + do: {{:op, @line, :+, left, right}, :integer} + + def specialize_binary(:op_add, left, left_type, right, right_type) + when left_type in [:integer, :number] and right_type in [:integer, :number], + do: + {{:op, @line, :+, left, right}, + if(left_type == :integer and right_type == :integer, do: :integer, else: :number)} + + def specialize_binary(:op_add, left, :string, right, :string), + do: {binary_concat(left, right), :string} + + def specialize_binary(:op_strict_eq, left, type, right, type) + when type in [:integer, :boolean, :string, :null, :undefined], + do: {{:op, @line, :"=:=", left, right}, :boolean} + + def specialize_binary(:op_strict_neq, left, type, right, type) + when type in [:integer, :boolean, :string, :null, :undefined], + do: {{:op, @line, :"=/=", left, right}, :boolean} + + def specialize_binary(:op_mod, left, :integer, right, :integer), + do: {Builder.local_call(:op_mod, [left, right]), :number} + + def specialize_binary(fun, left, left_type, right, right_type) + when fun in [:op_band, :op_bor, :op_bxor, :op_shl, :op_sar] and + left_type in [:integer, :number] and right_type in [:integer, :number], + do: {{:op, @line, binary_operator(fun), left, right}, :integer} + + def specialize_binary(fun, left, left_type, right, right_type) + when fun in [:op_sub, :op_mul] and left_type == :integer and right_type == :integer, + do: {{:op, @line, binary_operator(fun), left, right}, :integer} + + def specialize_binary(fun, left, left_type, right, right_type) + when fun in [:op_sub, :op_mul, :op_div, :op_lt, :op_lte, :op_gt, :op_gte] and + left_type in [:integer, :number] and right_type in [:integer, :number] do + {type, op} = + case fun do + :op_sub -> {:number, :-} + :op_mul -> {:number, :*} + :op_div -> {:number, :/} + :op_lt -> {:boolean, :<} + :op_lte -> {:boolean, :"=<"} + :op_gt -> {:boolean, :>} + :op_gte -> {:boolean, :>=} + end + + {{:op, @line, op, left, right}, type} + end + + def specialize_binary(fun, left, _left_type, right, _right_type), + do: {Builder.local_call(fun, [left, right]), :unknown} + + # ── Private helpers ── + + defp extract_literal_string({:string, _, chars}) when is_list(chars), + do: List.to_string(chars) + + defp extract_literal_string({:bin, _, elements}) when is_list(elements) do + result = + Enum.map(elements, fn + {:bin_element, _, {:integer, _, c}, _, _} -> c + {:bin_element, _, {:string, _, chars}, _, _} -> chars + _ -> nil + end) + + if Enum.any?(result, &is_nil/1) do + nil + else + result |> List.flatten() |> List.to_string() + end + end + + defp extract_literal_string(_), do: nil + + defp initial_slot_inits(0, _arg_count, _locals), do: %{} + + defp initial_slot_inits(slot_count, arg_count, locals) do + Map.new(0..(slot_count - 1), fn idx -> + initialized = + cond do + idx < arg_count -> true + match?(%{is_lexical: true}, Enum.at(locals, idx)) -> false + true -> true + end + + {idx, initialized} + end) + end + + defp update_slot!(state, idx, expr, type) do + {:ok, state} = update_slot(state, idx, expr, false, type) + state + end + + defp class_binding_slot(%{locals: locals, atoms: atoms}, atom_idx) do + class_name = resolve_atom_name(atom_idx, atoms) + + locals + |> Enum.with_index() + |> Enum.filter(fn {%{name: name, scope_level: scope_level, is_lexical: is_lexical}, _idx} -> + is_lexical and scope_level > 1 and resolve_local_name(name, atoms) == class_name + end) + |> Enum.max_by(fn {%{scope_level: scope_level}, _idx} -> scope_level end, fn -> nil end) + |> case do + nil -> nil + {_local, idx} -> idx + end + end + + defp resolve_local_name(name, _atoms) when is_binary(name), do: name + + defp resolve_local_name({:predefined, idx}, _atoms), + do: QuickBEAM.VM.PredefinedAtoms.lookup(idx) + + defp resolve_local_name(idx, atoms) + when is_integer(idx) and is_tuple(atoms) and idx < tuple_size(atoms), + do: elem(atoms, idx) + + defp resolve_local_name(_name, _atoms), do: nil + + defp resolve_atom_name(atom_idx, atoms), do: resolve_local_name(atom_idx, atoms) + + defp ordered_values(values) do + values + |> Enum.sort_by(fn {idx, _expr} -> idx end) + |> Enum.map(fn {_idx, expr} -> expr end) + end + + defp invoke_call_expr(%{return_type: return_type} = state, _fun, :self_fun, args, _arg_types) do + effectful_push( + state, + Builder.local_call(:run_ctx, [ctx_expr(state) | normalize_self_call_args(state, args)]), + return_type + ) + end + + defp invoke_call_expr(state, fun, fun_type, args, _arg_types) do + effectful_push( + state, + invoke_runtime_expr(state, fun, args), + function_return_type(fun_type, state.return_type) + ) + end + + defp tail_call_expr(state, _fun, :self_fun, args, _arg_types), + do: + Enum.reverse([ + Builder.local_call(:run_ctx, [ctx_expr(state) | normalize_self_call_args(state, args)]) + | state.body + ]) + + defp tail_call_expr(state, fun, _fun_type, args, _arg_types), + do: Enum.reverse([invoke_runtime_expr(state, fun, args) | state.body]) + + defp invoke_runtime_expr(state, fun, args) do + case var_ref_fun_call(fun, length(args)) do + {:ok, helper, idx, argc} when argc in 0..3 -> + Builder.local_call(helper, [ctx_expr(state), idx | args]) + + {:ok, helper, idx, _argc} -> + Builder.local_call(helper, [ctx_expr(state), idx, Builder.list_expr(args)]) + + :error -> + Builder.remote_call(QuickBEAM.VM.Invocation, :invoke_runtime, [ + ctx_expr(state), + fun, + Builder.list_expr(args) + ]) + end + end + + defp var_ref_fun_call( + {:call, _, {:remote, _, {:atom, _, RuntimeHelpers}, {:atom, _, fun}}, [_ctx, idx]}, + argc + ) + when fun in [:get_var_ref, :get_var_ref_check] do + {:ok, invoke_var_ref_helper(fun, argc), idx, argc} + end + + defp var_ref_fun_call(_expr, _argc), do: :error + + defp invoke_var_ref_helper(:get_var_ref, argc), + do: invoke_var_ref_helper_name(:invoke_var_ref, argc) + + defp invoke_var_ref_helper(:get_var_ref_check, argc), + do: invoke_var_ref_helper_name(:invoke_var_ref_check, argc) + + defp invoke_var_ref_helper_name(prefix, argc) when argc in 0..3, + do: String.to_atom("op_#{prefix}#{argc}") + + defp invoke_var_ref_helper_name(prefix, _argc), do: String.to_atom("op_#{prefix}") + + defp function_return_type(:self_fun, return_type), do: return_type + defp function_return_type({:function, type}, _return_type), do: type + defp function_return_type(_fun_type, _return_type), do: :unknown + + defp normalize_self_call_args(%{arg_count: arg_count}, args) do + args + |> Enum.take(arg_count) + |> then(fn args -> + args ++ List.duplicate(Builder.atom(:undefined), arg_count - length(args)) + end) + end + + defp specialize_get_length(expr, _type), + do: {Builder.remote_call(QuickBEAM.VM.ObjectModel.Get, :length_of, [expr]), :integer} + + defp binary_operator(:op_sub), do: :- + defp binary_operator(:op_mul), do: :* + defp binary_operator(:op_band), do: :band + defp binary_operator(:op_bor), do: :bor + defp binary_operator(:op_bxor), do: :bxor + defp binary_operator(:op_shl), do: :bsl + defp binary_operator(:op_sar), do: :bsr + + defp binary_concat(left, right) do + {:bin, @line, + [ + {:bin_element, @line, left, :default, [:binary]}, + {:bin_element, @line, right, :default, [:binary]} + ]} + end +end diff --git a/lib/quickbeam/vm/compiler/lowering/types.ex b/lib/quickbeam/vm/compiler/lowering/types.ex new file mode 100644 index 000000000..623072ded --- /dev/null +++ b/lib/quickbeam/vm/compiler/lowering/types.ex @@ -0,0 +1,37 @@ +defmodule QuickBEAM.VM.Compiler.Lowering.Types do + @moduledoc "Small type and purity predicates used while lowering compiler IR." + + @doc "Infers a coarse VM type for an Erlang abstract expression." + def infer_expr_type({:integer, _, _}), do: :integer + def infer_expr_type({:float, _, _}), do: :number + def infer_expr_type({:char, _, _}), do: :integer + def infer_expr_type({:string, _, _}), do: :string + def infer_expr_type({:bin, _, _}), do: :string + def infer_expr_type({:atom, _, true}), do: :boolean + def infer_expr_type({:atom, _, false}), do: :boolean + def infer_expr_type({:atom, _, :undefined}), do: :undefined + def infer_expr_type({:atom, _, nil}), do: :null + def infer_expr_type(_), do: :unknown + + @doc "Returns whether a slot is definitely initialized." + def definitely_initialized?(:unknown), do: false + def definitely_initialized?(_), do: true + + @doc "Returns whether an expression can be duplicated without side effects." + def pure_expr?({:integer, _, _}), do: true + def pure_expr?({:float, _, _}), do: true + def pure_expr?({:char, _, _}), do: true + def pure_expr?({:string, _, _}), do: true + def pure_expr?({:atom, _, _}), do: true + def pure_expr?({nil, _}), do: true + def pure_expr?({:var, _, _}), do: true + def pure_expr?({:tuple, _, values}), do: Enum.all?(values, &pure_expr?/1) + def pure_expr?({:cons, _, head, tail}), do: pure_expr?(head) and pure_expr?(tail) + def pure_expr?({:map, _, fields}), do: Enum.all?(fields, &pure_map_field?/1) + def pure_expr?(_), do: false + + defp pure_map_field?({:map_field_assoc, _, key, value}), + do: pure_expr?(key) and pure_expr?(value) + + defp pure_map_field?(_), do: false +end diff --git a/lib/quickbeam/vm/compiler/optimizer.ex b/lib/quickbeam/vm/compiler/optimizer.ex new file mode 100644 index 000000000..aa3d5b315 --- /dev/null +++ b/lib/quickbeam/vm/compiler/optimizer.ex @@ -0,0 +1,302 @@ +defmodule QuickBEAM.VM.Compiler.Optimizer do + @moduledoc "Bytecode optimizer: constant folding, peephole rewrites, and dead-branch elimination before lowering." + + alias QuickBEAM.VM.Compiler.Analysis.CFG + alias QuickBEAM.VM.Opcodes + + @push_one_ops [ + Opcodes.num(:push_i32), + Opcodes.num(:push_i16), + Opcodes.num(:push_i8), + Opcodes.num(:push_1) + ] + @get_loc_ops [ + Opcodes.num(:get_loc), + Opcodes.num(:get_loc0), + Opcodes.num(:get_loc1), + Opcodes.num(:get_loc2), + Opcodes.num(:get_loc3), + Opcodes.num(:get_loc8) + ] + + @doc "Optimizes bytecode before lowering or interpretation." + def optimize(instructions, constants \\ []) do + instructions + |> fold_literals(constants) + |> peephole_loc_updates() + |> simplify_constant_branches() + |> rewrite_forwarding_targets() + end + + defp fold_literals(instructions, constants) do + instructions + |> Enum.with_index() + |> Enum.reduce(instructions, fn {{_op, _args}, idx}, acc -> + maybe_fold_at(acc, idx, constants) + end) + end + + defp maybe_fold_at(instructions, idx, constants) do + case Enum.slice(instructions, idx, 3) do + [a, b, c] -> + fold_binary_window(instructions, idx, a, b, c, constants) + + _ -> + case Enum.slice(instructions, idx, 2) do + [a, b] -> fold_unary_window(instructions, idx, a, b, constants) + _ -> instructions + end + end + end + + defp fold_binary_window(instructions, idx, a, b, c, constants) do + with {:ok, left} <- instruction_literal(a, constants), + {:ok, right} <- instruction_literal(b, constants), + {:ok, op_name} <- CFG.opcode_name(elem(c, 0)), + {:ok, result} <- fold_binary(op_name, left, right), + {:ok, replacement} <- literal_instruction(result) do + replace_window(instructions, idx, [replacement, nop(), nop()]) + else + _ -> instructions + end + end + + defp fold_unary_window(instructions, idx, a, b, constants) do + with {:ok, value} <- instruction_literal(a, constants), + {:ok, op_name} <- CFG.opcode_name(elem(b, 0)), + {:ok, result} <- fold_unary(op_name, value), + {:ok, replacement} <- literal_instruction(result) do + replace_window(instructions, idx, [replacement, nop()]) + else + _ -> instructions + end + end + + defp fold_binary(:add, left, right) when is_integer(left) and is_integer(right), + do: {:ok, left + right} + + defp fold_binary(:sub, left, right) when is_integer(left) and is_integer(right), + do: {:ok, left - right} + + defp fold_binary(:mul, left, right) when is_integer(left) and is_integer(right), + do: {:ok, left * right} + + defp fold_binary(:lt, left, right) when is_integer(left) and is_integer(right), + do: {:ok, left < right} + + defp fold_binary(:lte, left, right) when is_integer(left) and is_integer(right), + do: {:ok, left <= right} + + defp fold_binary(:gt, left, right) when is_integer(left) and is_integer(right), + do: {:ok, left > right} + + defp fold_binary(:gte, left, right) when is_integer(left) and is_integer(right), + do: {:ok, left >= right} + + defp fold_binary(:strict_eq, left, right), do: {:ok, left === right} + defp fold_binary(:strict_neq, left, right), do: {:ok, left !== right} + defp fold_binary(_name, _left, _right), do: :error + + defp fold_unary(:neg, value) when is_integer(value), do: {:ok, -value} + defp fold_unary(:plus, value) when is_integer(value), do: {:ok, value} + defp fold_unary(:lnot, value) when is_boolean(value), do: {:ok, not value} + defp fold_unary(_name, _value), do: :error + + defp peephole_loc_updates(instructions) do + instructions + |> Enum.with_index() + |> Enum.reduce(instructions, fn {{_op, _args}, idx}, acc -> + case Enum.slice(acc, idx, 4) do + [a, b, c, d] -> rewrite_loc_update_window(acc, idx, a, b, c, d) + _ -> acc + end + end) + end + + defp rewrite_loc_update_window(instructions, idx, a, b, c, d) do + with {:ok, get_name} <- CFG.opcode_name(elem(a, 0)), + true <- get_name in [:get_loc, :get_loc0, :get_loc1, :get_loc2, :get_loc3, :get_loc8], + [slot_idx] <- elem(a, 1), + {:ok, put_name} <- CFG.opcode_name(elem(d, 0)), + true <- put_name in [:put_loc, :put_loc0, :put_loc1, :put_loc2, :put_loc3, :put_loc8], + [^slot_idx] <- elem(d, 1) do + case {b, CFG.opcode_name(elem(c, 0))} do + {{op_b, [1]}, {:ok, :add}} when op_b in @push_one_ops -> + replace_window(instructions, idx, [nop(), nop(), inc_loc(slot_idx), nop()]) + + {{op_b, [1]}, {:ok, :sub}} when op_b in @push_one_ops -> + replace_window(instructions, idx, [nop(), nop(), dec_loc(slot_idx), nop()]) + + {{op_b, [other_slot]}, {:ok, :add}} + when op_b in @get_loc_ops and is_integer(other_slot) -> + replace_window(instructions, idx, [nop(), b, add_loc(slot_idx), nop()]) + + _ -> + instructions + end + else + _ -> instructions + end + end + + defp simplify_constant_branches(instructions) do + instructions + |> Enum.with_index() + |> Enum.reduce(instructions, fn {{_op, _args}, idx}, acc -> + case Enum.slice(acc, idx, 2) do + [cond_insn, branch_insn] -> simplify_branch_window(acc, idx, cond_insn, branch_insn) + _ -> acc + end + end) + end + + defp simplify_branch_window(instructions, idx, cond_insn, branch_insn) do + case {instruction_boolean(cond_insn), branch_insn} do + {{:ok, true}, {op, [target]}} -> + case CFG.opcode_name(op) do + {:ok, :if_true} -> replace_window(instructions, idx, [nop(), goto(target)]) + {:ok, :if_true8} -> replace_window(instructions, idx, [nop(), goto(target)]) + {:ok, :if_false} -> replace_window(instructions, idx, [nop(), nop()]) + {:ok, :if_false8} -> replace_window(instructions, idx, [nop(), nop()]) + _ -> instructions + end + + {{:ok, false}, {op, [target]}} -> + case CFG.opcode_name(op) do + {:ok, :if_false} -> replace_window(instructions, idx, [nop(), goto(target)]) + {:ok, :if_false8} -> replace_window(instructions, idx, [nop(), goto(target)]) + {:ok, :if_true} -> replace_window(instructions, idx, [nop(), nop()]) + {:ok, :if_true8} -> replace_window(instructions, idx, [nop(), nop()]) + _ -> instructions + end + + _ -> + instructions + end + end + + defp rewrite_forwarding_targets(instructions) do + if Enum.any?(instructions, fn {op, _args} -> + match?({:ok, name} when name in [:catch, :gosub, :ret], CFG.opcode_name(op)) + end) do + instructions + else + entries = CFG.block_entries(instructions) + next_entry = fn start -> CFG.next_entry(entries, start) || length(instructions) end + + forwarding = + Enum.reduce(entries, %{}, fn start, acc -> + case {next_entry.(start), Enum.at(instructions, start)} do + {next, {op, [target]}} when next == start + 1 -> + case CFG.opcode_name(op) do + {:ok, name} when name in [:goto, :goto8, :goto16] -> Map.put(acc, start, target) + _ -> acc + end + + _ -> + acc + end + end) + + if forwarding == %{} do + instructions + else + Enum.map(instructions, fn {op, args} = insn -> + case {CFG.opcode_name(op), args} do + {{:ok, name}, [target]} + when name in [:goto, :goto8, :goto16, :if_true, :if_true8, :if_false, :if_false8] -> + {op, [follow_forwarding(target, forwarding)]} + + _ -> + insn + end + end) + end + end + end + + defp follow_forwarding(target, forwarding) do + case Map.get(forwarding, target) do + nil -> target + next when next == target -> target + next -> follow_forwarding(next, forwarding) + end + end + + defp instruction_boolean(insn) do + case instruction_literal(insn, []) do + {:ok, value} when is_boolean(value) -> {:ok, value} + _ -> :error + end + end + + defp instruction_literal({op, args}, constants) do + case CFG.opcode_name(op) do + {:ok, :push_i32} -> + {:ok, hd(args)} + + {:ok, :push_i16} -> + {:ok, hd(args)} + + {:ok, :push_i8} -> + {:ok, hd(args)} + + {:ok, :push_minus1} -> + {:ok, -1} + + {:ok, name} + when name in [:push_0, :push_1, :push_2, :push_3, :push_4, :push_5, :push_6, :push_7] -> + {:ok, String.to_integer(String.replace_prefix(Atom.to_string(name), "push_", ""))} + + {:ok, :push_true} -> + {:ok, true} + + {:ok, :push_false} -> + {:ok, false} + + {:ok, :null} -> + {:ok, nil} + + {:ok, :undefined} -> + {:ok, :undefined} + + {:ok, :push_empty_string} -> + {:ok, ""} + + {:ok, name} when name in [:push_const, :push_const8] -> + literal_const(constants, hd(args)) + + _ -> + :error + end + end + + defp literal_const(constants, idx) do + case Enum.at(constants, idx) do + value when is_integer(value) -> {:ok, value} + value when is_boolean(value) -> {:ok, value} + nil -> {:ok, nil} + :undefined -> {:ok, :undefined} + "" -> {:ok, ""} + _ -> :error + end + end + + defp literal_instruction(value) when is_integer(value), + do: {:ok, {Opcodes.num(:push_i32), [value]}} + + defp literal_instruction(true), do: {:ok, {Opcodes.num(:push_true), []}} + defp literal_instruction(false), do: {:ok, {Opcodes.num(:push_false), []}} + + defp replace_window(instructions, idx, replacements) do + prefix = Enum.take(instructions, idx) + suffix = Enum.drop(instructions, idx + length(replacements)) + prefix ++ replacements ++ suffix + end + + defp nop, do: {Opcodes.num(:nop), []} + defp goto(target), do: {Opcodes.num(:goto16), [target]} + defp inc_loc(idx), do: {Opcodes.num(:inc_loc), [idx]} + defp dec_loc(idx), do: {Opcodes.num(:dec_loc), [idx]} + defp add_loc(idx), do: {Opcodes.num(:add_loc), [idx]} +end diff --git a/lib/quickbeam/vm/compiler/runner.ex b/lib/quickbeam/vm/compiler/runner.ex new file mode 100644 index 000000000..4cd7f2928 --- /dev/null +++ b/lib/quickbeam/vm/compiler/runner.ex @@ -0,0 +1,337 @@ +defmodule QuickBEAM.VM.Compiler.Runner do + @moduledoc "Compiled-function invocation: sets up call frames, handles `new`, generators, and tail-call dispatch." + + alias QuickBEAM.VM.{Bytecode, GlobalEnv, Heap} + alias QuickBEAM.VM.Compiler + alias QuickBEAM.VM.Compiler.GeneratorIterator + alias QuickBEAM.VM.Interpreter.Context + alias QuickBEAM.VM.ObjectModel.{Class, Functions} + alias QuickBEAM.VM.PromiseState, as: Promise + + @doc "Invokes the runtime object represented by this module." + def invoke(%Bytecode.Function{} = fun, args), do: invoke(fun, args, nil) + def invoke({:closure, _, %Bytecode.Function{}} = closure, args), do: invoke(closure, args, nil) + def invoke(_, _), do: :error + + def invoke(%Bytecode.Function{} = fun, args, base_ctx), + do: invoke_target(fun, fun, args, %{}, base_ctx) + + def invoke({:closure, _, %Bytecode.Function{} = fun} = closure, args, base_ctx), + do: invoke_target(closure, fun, args, %{}, base_ctx) + + def invoke(_, _, _), do: :error + + @doc "Helper for compiled-function invocation: sets up call frames, handles `new`, generators, and tail-call dispatch." + def invoke_with_receiver(%Bytecode.Function{} = fun, args, this_obj), + do: invoke_with_receiver(fun, args, this_obj, nil) + + def invoke_with_receiver({:closure, _, %Bytecode.Function{}} = closure, args, this_obj), + do: invoke_with_receiver(closure, args, this_obj, nil) + + def invoke_with_receiver(_, _, _), do: :error + + def invoke_with_receiver(%Bytecode.Function{} = fun, args, this_obj, base_ctx), + do: invoke_target(fun, fun, args, %{this: this_obj}, base_ctx) + + def invoke_with_receiver( + {:closure, _, %Bytecode.Function{} = fun} = closure, + args, + this_obj, + base_ctx + ), + do: invoke_target(closure, fun, args, %{this: this_obj}, base_ctx) + + def invoke_with_receiver(_, _, _, _), do: :error + + @doc "Helper for compiled-function invocation: sets up call frames, handles `new`, generators, and tail-call dispatch." + def invoke_constructor(%Bytecode.Function{} = fun, args, this_obj, new_target), + do: invoke_constructor(fun, args, this_obj, new_target, nil) + + def invoke_constructor( + {:closure, _, %Bytecode.Function{}} = closure, + args, + this_obj, + new_target + ), + do: invoke_constructor(closure, args, this_obj, new_target, nil) + + def invoke_constructor(_, _, _, _), do: :error + + def invoke_constructor(%Bytecode.Function{} = fun, args, this_obj, new_target, base_ctx), + do: invoke_target(fun, fun, args, %{this: this_obj, new_target: new_target}, base_ctx) + + def invoke_constructor( + {:closure, _, %Bytecode.Function{} = fun} = closure, + args, + this_obj, + new_target, + base_ctx + ), + do: invoke_target(closure, fun, args, %{this: this_obj, new_target: new_target}, base_ctx) + + def invoke_constructor(_, _, _, _, _), do: :error + + defp invoke_target(current_func, %Bytecode.Function{} = fun, args, ctx_overrides, base_ctx) do + key = {fun.byte_code, fun.arg_count, :erlang.phash2(fun.constants)} + normalized_args = normalize_args(args, fun.arg_count) + + case Heap.get_compiled(key) do + {:compiled, {mod, name}, atoms} -> + ctx = invocation_ctx(base_ctx, current_func, args, ctx_overrides, fun, atoms) + {:ok, invoke_compiled(fun, {mod, name}, ctx, normalized_args)} + + :unsupported -> + :error + + nil -> + compile_and_invoke(fun, current_func, args, normalized_args, ctx_overrides, base_ctx, key) + end + end + + defp compile_and_invoke(fun, current_func, args, normalized_args, ctx_overrides, base_ctx, key) do + case Compiler.compile(fun) do + {:ok, compiled} -> + atoms = Heap.get_fn_atoms(fun.byte_code, Heap.get_atoms()) + Heap.put_compiled(key, {:compiled, compiled, atoms}) + ctx = invocation_ctx(base_ctx, current_func, args, ctx_overrides, fun, atoms) + {:ok, invoke_compiled(fun, compiled, ctx, normalized_args)} + + {:error, _} -> + Heap.put_compiled(key, :unsupported) + :error + end + end + + defp invoke_compiled(%Bytecode.Function{func_kind: 1}, compiled, ctx, args) do + # Generator: wrap in yield/suspend protocol + compiled_gen_invoke(compiled, ctx, args) + end + + defp invoke_compiled(%Bytecode.Function{func_kind: 2}, compiled, ctx, args) do + # Async: wrap in promise + compiled_async_invoke(compiled, ctx, args) + end + + defp invoke_compiled(%Bytecode.Function{func_kind: 3}, compiled, ctx, args) do + # Async generator + compiled_async_gen_invoke(compiled, ctx, args) + end + + defp invoke_compiled(_fun, compiled, ctx, args) do + apply_compiled(compiled, ctx, args) + end + + defp compiled_gen_invoke(compiled, ctx, args) do + gen_ref = make_ref() + + try do + apply_compiled(compiled, ctx, args) + catch + {:generator_yield, _val, continuation} -> + Heap.put_obj(gen_ref, %{state: :suspended, continuation: continuation}) + end + + GeneratorIterator.build(gen_ref) + end + + defp compiled_async_invoke(compiled, ctx, args) do + result = apply_compiled(compiled, ctx, args) + Promise.resolved(result) + catch + {:generator_return, val} -> Promise.resolved(val) + {:js_throw, val} -> Promise.rejected(val) + end + + defp compiled_async_gen_invoke(compiled, ctx, args) do + gen_ref = make_ref() + + try do + apply_compiled(compiled, ctx, args) + catch + {:generator_yield, _val, continuation} -> + Heap.put_obj(gen_ref, %{state: :suspended, continuation: continuation}) + end + + GeneratorIterator.build_async(gen_ref) + end + + defp apply_compiled({mod, name}, ctx, args), do: apply(mod, name, [ctx | args]) + + defp invocation_ctx(base_ctx, current_func, args, %{} = ctx_overrides, fun, atoms) + when map_size(ctx_overrides) == 0 do + build_invocation_ctx(base_ctx(base_ctx), current_func, args, fun, atoms) + end + + defp invocation_ctx( + base_ctx, + current_func, + args, + %{this: this_obj, new_target: new_target}, + fun, + atoms + ) do + build_invocation_ctx(base_ctx(base_ctx), current_func, args, fun, atoms, + this: this_obj, + new_target: new_target + ) + end + + defp invocation_ctx(base_ctx, current_func, args, ctx_overrides, fun, atoms) do + ctx = build_invocation_ctx(base_ctx(base_ctx), current_func, args, fun, atoms) + + ctx + |> struct(Map.take(ctx_overrides, [:this, :new_target])) + |> Context.mark_dirty() + end + + defp build_invocation_ctx(%Context{} = base_ctx, current_func, args, fun, atoms), + do: build_invocation_ctx(base_ctx, current_func, args, fun, atoms, []) + + defp build_invocation_ctx(%Context{} = base_ctx, current_func, args, _fun, atoms, []) do + {home_object, super} = home_object_and_super(current_func) + + %Context{ + base_ctx + | atoms: atoms || current_atoms(base_ctx), + current_func: current_func, + arg_buf: List.to_tuple(args), + trace_enabled: trace_enabled(base_ctx), + home_object: home_object, + super: super + } + |> Context.mark_dirty() + end + + defp build_invocation_ctx( + %Context{} = base_ctx, + current_func, + args, + _fun, + atoms, + this: this_obj + ) do + {home_object, super} = home_object_and_super(current_func) + + %Context{ + base_ctx + | atoms: atoms || current_atoms(base_ctx), + current_func: current_func, + arg_buf: List.to_tuple(args), + trace_enabled: trace_enabled(base_ctx), + home_object: home_object, + super: super, + this: this_obj + } + |> Context.mark_dirty() + end + + defp build_invocation_ctx( + %Context{} = base_ctx, + current_func, + args, + _fun, + atoms, + this: this_obj, + new_target: new_target + ) do + {home_object, super} = home_object_and_super(current_func) + + %Context{ + base_ctx + | atoms: atoms || current_atoms(base_ctx), + current_func: current_func, + arg_buf: List.to_tuple(args), + trace_enabled: trace_enabled(base_ctx), + home_object: home_object, + super: super, + this: this_obj, + new_target: new_target + } + |> Context.mark_dirty() + end + + defp build_invocation_ctx(%Context{} = base_ctx, current_func, args, _fun, atoms, overrides) do + {home_object, super} = home_object_and_super(current_func) + + %Context{ + base_ctx + | atoms: atoms || current_atoms(base_ctx), + current_func: current_func, + arg_buf: List.to_tuple(args), + trace_enabled: trace_enabled(base_ctx), + home_object: home_object, + super: super, + this: Keyword.get(overrides, :this, base_ctx.this), + new_target: Keyword.get(overrides, :new_target, base_ctx.new_target) + } + |> Context.mark_dirty() + end + + defp base_ctx(%Context{} = ctx), do: ensure_globals(ctx) + + defp base_ctx(nil) do + %Context{atoms: Heap.get_atoms(), globals: base_globals(), trace_enabled: false} + end + + defp base_ctx(map) when is_map(map) do + map + |> then(&struct(Context, Map.merge(Map.from_struct(%Context{}), &1))) + |> ensure_globals() + end + + defp ensure_globals(%Context{globals: globals} = ctx) when globals == %{}, + do: %{ctx | globals: base_globals()} + + defp ensure_globals(%Context{} = ctx), do: ctx + + defp base_globals, do: GlobalEnv.base_globals() + + defp current_atoms(%Context{} = ctx), do: ctx.atoms + + defp trace_enabled(%Context{} = ctx), do: ctx.trace_enabled + + defp home_object_and_super(%Bytecode.Function{need_home_object: false}), + do: {:undefined, :undefined} + + defp home_object_and_super({:closure, _, %Bytecode.Function{need_home_object: false}}), + do: {:undefined, :undefined} + + defp home_object_and_super(current_func) do + home_object = Functions.current_home_object(current_func) + {home_object, current_super(home_object)} + end + + defp current_super(:undefined), do: :undefined + defp current_super(nil), do: :undefined + defp current_super(home_object), do: Class.get_super(home_object) + + @doc "Normalizes call arguments to the arity expected by compiled code." + def normalize_args(_args, 0), do: [] + def normalize_args([a0 | _], 1), do: [a0] + def normalize_args([], 1), do: [:undefined] + def normalize_args([a0, a1 | _], 2), do: [a0, a1] + def normalize_args([a0], 2), do: [a0, :undefined] + def normalize_args([], 2), do: [:undefined, :undefined] + def normalize_args([a0, a1, a2 | _], 3), do: [a0, a1, a2] + def normalize_args([a0, a1], 3), do: [a0, a1, :undefined] + def normalize_args([a0], 3), do: [a0, :undefined, :undefined] + def normalize_args([], 3), do: [:undefined, :undefined, :undefined] + + def normalize_args([a0, a1, a2, a3 | _], 4), do: [a0, a1, a2, a3] + def normalize_args([a0, a1, a2], 4), do: [a0, a1, a2, :undefined] + def normalize_args([a0, a1], 4), do: [a0, a1, :undefined, :undefined] + def normalize_args([a0], 4), do: [a0, :undefined, :undefined, :undefined] + def normalize_args([], 4), do: [:undefined, :undefined, :undefined, :undefined] + def normalize_args([a0, a1, a2, a3, a4 | _], 5), do: [a0, a1, a2, a3, a4] + def normalize_args([a0, a1, a2, a3], 5), do: [a0, a1, a2, a3, :undefined] + def normalize_args([a0, a1, a2], 5), do: [a0, a1, a2, :undefined, :undefined] + def normalize_args([a0, a1], 5), do: [a0, a1, :undefined, :undefined, :undefined] + def normalize_args([a0], 5), do: [a0, :undefined, :undefined, :undefined, :undefined] + def normalize_args([], 5), do: [:undefined, :undefined, :undefined, :undefined, :undefined] + + def normalize_args(args, arg_count) do + args + |> Enum.take(arg_count) + |> then(fn args -> args ++ List.duplicate(:undefined, arg_count - length(args)) end) + end +end diff --git a/lib/quickbeam/vm/compiler/runtime_helpers.ex b/lib/quickbeam/vm/compiler/runtime_helpers.ex new file mode 100644 index 000000000..1ba862f8b --- /dev/null +++ b/lib/quickbeam/vm/compiler/runtime_helpers.ex @@ -0,0 +1,1252 @@ +defmodule QuickBEAM.VM.Compiler.RuntimeHelpers do + @moduledoc "Runtime support for JIT-compiled code." + + import Bitwise, only: [bnot: 1] + import QuickBEAM.VM.Heap.Keys, only: [proto: 0] + import QuickBEAM.VM.Value, only: [is_object: 1] + + alias QuickBEAM.VM.{Builtin, Bytecode, GlobalEnv, Heap, Invocation, JSThrow, Names} + alias QuickBEAM.VM.Compiler.Runner + alias QuickBEAM.VM.Environment.Captures + alias QuickBEAM.VM.Interpreter.{Closures, Context, Values} + alias QuickBEAM.VM.Invocation.Context, as: InvokeContext + alias QuickBEAM.VM.ObjectModel.{Class, Copy, Delete, Functions, Get, Methods, Private, Put} + alias QuickBEAM.VM.Runtime + + # ── Coercion ── + + @tdz :__tdz__ + + @doc "Returns a dirty interpreter context suitable for entry into compiled code." + def entry_ctx do + case Heap.get_ctx() do + %Context{} = ctx -> + Context.mark_dirty(ctx) + + map when is_map(map) -> + map |> context_struct() |> Context.mark_dirty() + + _ -> + %Context{atoms: Heap.get_atoms(), globals: GlobalEnv.base_globals()} + |> Context.mark_dirty() + end + end + + @doc "Raises a JavaScript ReferenceError when a local is still in the temporal dead zone." + def ensure_initialized_local!(_ctx \\ nil, val) do + if val == @tdz do + throw( + {:js_throw, + Heap.make_error("Cannot access variable before initialization", "ReferenceError")} + ) + end + + val + end + + @doc "Returns whether a value is JavaScript `undefined`." + def undefined?(_ctx \\ nil, val), do: val == :undefined + def null?(_ctx \\ nil, val), do: val == nil + def typeof_is_undefined(_ctx \\ nil, val), do: val == :undefined or val == nil + def typeof_is_function(_ctx \\ nil, val), do: Builtin.callable?(val) + + def strict_neq(_ctx \\ nil, a, b), do: not Values.strict_eq(a, b) + + def bit_not(_ctx \\ nil, a), do: Values.to_int32(bnot(Values.to_int32(a))) + @doc "Applies JavaScript logical NOT." + def lnot(_ctx \\ nil, a), do: not Values.truthy?(a) + + def inc(_ctx \\ nil, a), do: Values.add(a, 1) + def dec(_ctx \\ nil, a), do: Values.sub(a, 1) + + def post_inc(_ctx \\ nil, a) do + num = Values.to_number(a) + {Values.add(num, 1), num} + end + + @doc "Applies JavaScript postfix decrement and returns `{new_value, old_value}`." + def post_dec(_ctx \\ nil, a) do + num = Values.to_number(a) + {Values.sub(num, 1), num} + end + + def ensure_capture_cell(_ctx \\ nil, cell, val), do: Captures.ensure(cell, val) + def close_capture_cell(_ctx \\ nil, cell, val), do: Captures.close(cell, val) + def sync_capture_cell(_ctx \\ nil, cell, val), do: Captures.sync(cell, val) + + @doc "Resolves an awaited JavaScript value for compiled async code." + def await(_ctx \\ nil, val), do: QuickBEAM.VM.Interpreter.resolve_awaited(val) + + def context_struct(%Context{} = ctx), do: ctx + + def context_struct(map) when is_map(map) do + struct(Context, Map.merge(Map.from_struct(%Context{}), map)) + end + + @doc "Returns the atom table from a context-like value." + def context_atoms(%{atoms: atoms}), do: atoms + def context_atoms(_), do: {} + def context_globals(%{globals: globals}), do: globals + def context_globals(_), do: GlobalEnv.base_globals() + def context_current_func(%{current_func: current_func}), do: current_func + def context_current_func(_), do: :undefined + def context_arg_buf(%{arg_buf: arg_buf}), do: arg_buf + def context_arg_buf(_), do: {} + @doc "Returns the JavaScript `this` value from a context-like value." + def context_this(%{this: this}), do: this + def context_this(_), do: :undefined + def context_new_target(%{new_target: new_target}), do: new_target + def context_new_target(_), do: :undefined + def context_gas(%{gas: gas}), do: gas + def context_gas(_), do: Context.default_gas() + + def ensure_context(%Context{} = ctx), do: ctx + def ensure_context(map) when is_map(map), do: context_struct(map) + + def ensure_context(_), + do: %Context{atoms: Heap.get_atoms(), globals: GlobalEnv.base_globals()} + + @doc "Returns the home object associated with the current function." + def context_home_object(ctx, current_func) do + case Map.get(ctx, :home_object, :undefined) do + :undefined -> QuickBEAM.VM.ObjectModel.Functions.current_home_object(current_func) + home_object -> home_object + end + end + + def context_super(ctx) do + case Map.get(ctx, :super, :undefined) do + :undefined -> + QuickBEAM.VM.ObjectModel.Class.get_super( + context_home_object(ctx, context_current_func(ctx)) + ) + + super -> + super + end + end + + # ── Variables ── + + @doc "Reads a variable binding or throws a JavaScript ReferenceError when absent." + def get_var(ctx, name) when is_binary(name), do: fetch_ctx_var(ctx, name) + + def get_var(ctx, atom_idx), + do: fetch_ctx_var(ctx, Names.resolve_atom(context_atoms(ctx), atom_idx)) + + def get_global(globals, name) do + case Map.fetch(globals, name) do + {:ok, val} -> val + :error -> JSThrow.reference_error!("#{name} is not defined") + end + end + + @doc "Reads a global binding and returns `:undefined` when absent." + def get_global_undef(globals, name), do: Map.get(globals, name, :undefined) + + def get_var_undef(ctx, name) when is_binary(name), + do: GlobalEnv.get(context_globals(ctx), name, :undefined) + + def get_var_undef(ctx, atom_idx), + do: get_var_undef(ctx, Names.resolve_atom(context_atoms(ctx), atom_idx)) + + @doc "Resolves an atom-table entry to its runtime value." + def push_atom_value(ctx, atom_idx), + do: Names.resolve_atom(context_atoms(ctx), atom_idx) + + def private_symbol(_ctx, name) when is_binary(name), do: Private.private_symbol(name) + + def private_symbol(ctx, atom_idx), + do: Private.private_symbol(Names.resolve_atom(context_atoms(ctx), atom_idx)) + + @doc "Reads the value referenced by a compiled variable reference." + def get_var_ref(ctx, idx), do: read_var_ref(current_var_ref(ctx, idx)) + def get_var_ref_check(ctx, idx), do: checked_var_ref(ctx, idx) + + def get_capture(ctx, key) do + case context_current_func(ctx) do + {:closure, captured, _} -> read_var_ref(Map.get(captured, key, :undefined)) + _ -> :undefined + end + end + + @doc "Invokes a callable stored in a variable reference." + def invoke_var_ref(ctx, idx, args), + do: Invocation.invoke_runtime(ctx, get_var_ref(ctx, idx), args) + + def invoke_var_ref0(ctx, idx), do: Invocation.invoke_runtime(ctx, get_var_ref(ctx, idx), []) + + def invoke_var_ref1(ctx, idx, arg0), + do: Invocation.invoke_runtime(ctx, get_var_ref(ctx, idx), [arg0]) + + @doc "Invokes a callable variable reference with two arguments." + def invoke_var_ref2(ctx, idx, arg0, arg1), + do: Invocation.invoke_runtime(ctx, get_var_ref(ctx, idx), [arg0, arg1]) + + def invoke_var_ref3(ctx, idx, arg0, arg1, arg2), + do: Invocation.invoke_runtime(ctx, get_var_ref(ctx, idx), [arg0, arg1, arg2]) + + def invoke_var_ref_check(ctx, idx, args), + do: Invocation.invoke_runtime(ctx, checked_var_ref(ctx, idx), args) + + @doc "Checks and invokes a callable variable reference with no arguments." + def invoke_var_ref_check0(ctx, idx), + do: Invocation.invoke_runtime(ctx, checked_var_ref(ctx, idx), []) + + def invoke_var_ref_check1(ctx, idx, arg0), + do: Invocation.invoke_runtime(ctx, checked_var_ref(ctx, idx), [arg0]) + + def invoke_var_ref_check2(ctx, idx, arg0, arg1), + do: Invocation.invoke_runtime(ctx, checked_var_ref(ctx, idx), [arg0, arg1]) + + @doc "Checks and invokes a callable variable reference with three arguments." + def invoke_var_ref_check3(ctx, idx, arg0, arg1, arg2), + do: Invocation.invoke_runtime(ctx, checked_var_ref(ctx, idx), [arg0, arg1, arg2]) + + def put_var_ref(ctx, idx, val) do + write_var_ref(current_var_ref(ctx, idx), val) + :ok + end + + @doc "Writes a value through a compiled variable reference and returns the value." + def set_var_ref(ctx, idx, val) do + put_var_ref(ctx, idx, val) + val + end + + def put_capture(ctx, key, val) do + case context_current_func(ctx) do + {:closure, captured, _} -> write_var_ref(Map.get(captured, key, :undefined), val) + _ -> :ok + end + + :ok + end + + @doc "Writes a captured variable and returns the value." + def set_capture(ctx, key, val) do + put_capture(ctx, key, val) + val + end + + def make_var_ref(ctx, atom_idx) do + name = Names.resolve_atom(context_atoms(ctx), atom_idx) + val = Map.get(context_globals(ctx), name, :undefined) + ref = make_ref() + Heap.put_cell(ref, val) + {:cell, ref} + end + + @doc "Returns or creates a mutable reference cell for an existing variable reference." + def make_var_ref_ref(ctx, idx) do + case current_var_ref(ctx, idx) do + {:cell, _} = cell -> + cell + + val -> + ref = make_ref() + Heap.put_cell(ref, val) + {:cell, ref} + end + end + + def get_var(name) when is_binary(name) do + case GlobalEnv.fetch(name) do + {:found, val} -> val + :not_found -> JSThrow.reference_error!("#{name} is not defined") + end + end + + def get_var(atom_idx), + do: get_var(Names.resolve_atom(InvokeContext.current_atoms(), atom_idx)) + + def get_var_undef(name) when is_binary(name), do: GlobalEnv.get(name, :undefined) + + def get_var_undef(atom_idx), + do: get_var_undef(Names.resolve_atom(InvokeContext.current_atoms(), atom_idx)) + + def push_atom_value(atom_idx), do: Names.resolve_atom(InvokeContext.current_atoms(), atom_idx) + + def private_symbol(name) when is_binary(name), do: Private.private_symbol(name) + + def private_symbol(atom_idx), + do: Private.private_symbol(Names.resolve_atom(InvokeContext.current_atoms(), atom_idx)) + + def get_var_ref(idx), do: read_var_ref(current_var_ref(idx)) + def get_var_ref_check(idx), do: checked_var_ref(idx) + + def invoke_var_ref(idx, args), do: Invocation.invoke_runtime(get_var_ref(idx), args) + def invoke_var_ref0(idx), do: Invocation.invoke_runtime(get_var_ref(idx), []) + def invoke_var_ref1(idx, arg0), do: Invocation.invoke_runtime(get_var_ref(idx), [arg0]) + + def invoke_var_ref2(idx, arg0, arg1), + do: Invocation.invoke_runtime(get_var_ref(idx), [arg0, arg1]) + + def invoke_var_ref3(idx, arg0, arg1, arg2), + do: Invocation.invoke_runtime(get_var_ref(idx), [arg0, arg1, arg2]) + + def invoke_var_ref_check(idx, args), + do: Invocation.invoke_runtime(checked_var_ref(idx), args) + + def invoke_var_ref_check0(idx), do: Invocation.invoke_runtime(checked_var_ref(idx), []) + + def invoke_var_ref_check1(idx, arg0), + do: Invocation.invoke_runtime(checked_var_ref(idx), [arg0]) + + def invoke_var_ref_check2(idx, arg0, arg1), + do: Invocation.invoke_runtime(checked_var_ref(idx), [arg0, arg1]) + + def invoke_var_ref_check3(idx, arg0, arg1, arg2), + do: Invocation.invoke_runtime(checked_var_ref(idx), [arg0, arg1, arg2]) + + def put_var_ref(idx, val) do + write_var_ref(current_var_ref(idx), val) + :ok + end + + def set_var_ref(idx, val) do + put_var_ref(idx, val) + val + end + + @doc "Creates a mutable reference cell for a local slot value." + def make_loc_ref(_ctx \\ nil, _idx) do + ref = make_ref() + Heap.put_cell(ref, :undefined) + {:cell, ref} + end + + def make_arg_ref(_ctx \\ nil, idx) do + ref = make_ref() + val = elem(InvokeContext.current_arg_buf(), idx) + Heap.put_cell(ref, val) + {:cell, ref} + end + + @doc "Reads the value from a reference cell or direct value." + def get_ref_value(_ctx \\ nil, ref) + def get_ref_value(_ctx, {:cell, _} = cell), do: Closures.read_cell(cell) + def get_ref_value(_ctx, _), do: :undefined + + def put_ref_value(_ctx \\ nil, val, ref) + + def put_ref_value(_ctx, val, {:cell, _} = cell) do + Closures.write_cell(cell, val) + val + end + + def put_ref_value(_ctx, val, _), do: val + + @doc "Reads a variable from a compiled context or throws when absent." + def fetch_ctx_var(ctx, name) do + case GlobalEnv.fetch(context_globals(ctx), name) do + {:found, val} -> val + :not_found -> JSThrow.reference_error!("#{name} is not defined") + end + end + + # ── Objects ── + + @doc "Reads a JavaScript property value." + def get_field(obj, key) when is_binary(key), do: Get.get(obj, key) + + def get_field(obj, atom_idx), + do: Get.get(obj, Names.resolve_atom(InvokeContext.current_atoms(), atom_idx)) + + def get_array_el2(_ctx \\ nil, obj, idx), do: {Get.get(obj, idx), obj} + + def get_private_field(_ctx, obj, key) do + case Private.get_field(obj, key) do + :missing -> throw({:js_throw, Private.brand_error()}) + val -> val + end + end + + @doc "Writes a JavaScript property value." + def put_field(_ctx, obj, key, val) when is_binary(key), do: put_field(obj, key, val) + + def put_field(ctx, obj, atom_idx, val), + do: put_field(obj, Names.resolve_atom(context_atoms(ctx), atom_idx), val) + + def put_field(obj, key, val) when is_binary(key) do + Put.put(obj, key, val) + :ok + end + + def put_field(obj, atom_idx, val), + do: put_field(obj, Names.resolve_atom(InvokeContext.current_atoms(), atom_idx), val) + + @doc "Writes a JavaScript array element." + def put_array_el(_ctx \\ nil, obj, idx, val) do + Put.put_element(obj, idx, val) + :ok + end + + def define_array_el(_ctx \\ nil, obj, idx, val), do: Put.define_array_el(obj, idx, val) + + def define_field(_ctx, obj, key, val) when is_binary(key), do: define_field(obj, key, val) + + def define_field(ctx, obj, atom_idx, val), + do: define_field(obj, Names.resolve_atom(context_atoms(ctx), atom_idx), val) + + def define_field(obj, key, val) when is_binary(key) do + Put.put(obj, key, val) + obj + end + + def define_field(obj, atom_idx, val), + do: define_field(obj, Names.resolve_atom(InvokeContext.current_atoms(), atom_idx), val) + + @doc "Writes an existing private class field or throws when absent." + def put_private_field(_ctx, obj, key, val) do + case Private.put_field!(obj, key, val) do + :ok -> :ok + :error -> throw({:js_throw, Private.brand_error()}) + end + end + + def define_private_field(_ctx, obj, key, val) do + case Private.define_field!(obj, key, val) do + :ok -> :ok + :error -> throw({:js_throw, Private.brand_error()}) + end + end + + @doc "Assigns a JavaScript function display name." + def set_function_name(_ctx \\ nil, fun, name), do: Functions.rename(fun, name) + + def set_function_name_atom(ctx, fun, atom_idx), + do: Functions.set_name_atom(fun, atom_idx, context_atoms(ctx)) + + def set_function_name_atom(fun, atom_idx), + do: Functions.set_name_atom(fun, atom_idx, InvokeContext.current_atoms()) + + @doc "Assigns a function display name from a computed property value." + def set_function_name_computed(_ctx \\ nil, fun, name_val), + do: Functions.set_name_computed(fun, name_val) + + def set_home_object(_ctx \\ nil, method, target), do: Methods.set_home_object(method, target) + + def get_super(ctx, func) do + if context_home_object(ctx, context_current_func(ctx)) == func, + do: context_super(ctx), + else: Class.get_super(func) + end + + def get_super(func) do + case InvokeContext.fast_ctx() do + {_atoms, _globals, _current_func, _arg_buf, _this, _new_target, ^func, super} -> + super + + _ -> + if InvokeContext.current_home_object(InvokeContext.current_func()) == func, + do: InvokeContext.current_super(), + else: Class.get_super(func) + end + end + + @doc "Copies enumerable object-spread properties." + def copy_data_properties(_ctx \\ nil, target, source) do + Copy.copy_data_properties(target, source) + target + end + + def new_object(_ctx \\ nil) do + object_proto = Heap.get_object_prototype() + init = if object_proto, do: %{proto() => object_proto}, else: %{} + Heap.wrap(init) + end + + @doc "Converts an iterable or array-like value to a JavaScript array object." + def array_from(_ctx \\ nil, list), do: Heap.wrap(list) + + def delete_property(_ctx \\ nil, obj, key), do: Delete.delete_property(obj, key) + + def set_proto(_ctx \\ nil, obj, proto) + + def set_proto(_ctx, {:obj, ref} = _obj, proto) do + map = Heap.get_obj(ref, %{}) + if is_map(map), do: Heap.put_obj(ref, Map.put(map, proto(), proto)) + :ok + end + + def set_proto(_ctx, _obj, _proto), do: :ok + + # ── Functions ── + + @doc "Constructs a JavaScript value from compiled code." + def construct_runtime(ctx, ctor, new_target, args), + do: Invocation.construct_runtime(ctx, ctor, new_target, args) + + def construct_runtime(ctor, new_target, args), + do: Invocation.construct_runtime(ctor, new_target, args) + + def init_ctor(ctx) do + current_func = context_current_func(ctx) + + raw = + case current_func do + {:closure, _, %Bytecode.Function{} = f} -> f + %Bytecode.Function{} = f -> f + other -> other + end + + parent = Heap.get_parent_ctor(raw) + args = Tuple.to_list(context_arg_buf(ctx)) + + pending_this = + case context_this(ctx) do + {:uninitialized, {:obj, _} = obj} -> obj + {:obj, _} = obj -> obj + other -> other + end + + parent_ctx = Context.mark_dirty(%{ensure_context(ctx) | this: pending_this}) + + result = + case parent do + nil -> + pending_this + + %Bytecode.Function{} = f -> + case Runner.invoke_constructor( + {:closure, %{}, f}, + args, + pending_this, + context_new_target(ctx), + parent_ctx + ) do + {:ok, val} -> + val + + :error -> + Invocation.invoke_with_receiver( + {:closure, %{}, f}, + args, + context_gas(ctx), + pending_this + ) + end + + {:closure, _, %Bytecode.Function{}} = closure -> + case Runner.invoke_constructor( + closure, + args, + pending_this, + context_new_target(ctx), + parent_ctx + ) do + {:ok, val} -> + val + + :error -> + Invocation.invoke_with_receiver( + closure, + args, + context_gas(ctx), + pending_this + ) + end + + {:builtin, _name, cb} when is_function(cb, 2) -> + cb.(args, pending_this) + + _ -> + pending_this + end + + result = + case result do + {:obj, _} = obj -> obj + _ -> pending_this + end + + Heap.put_ctx(Context.mark_dirty(%{parent_ctx | this: result})) + result + end + + @doc "Invokes a JavaScript callable from compiled code." + def invoke_runtime(ctx, fun, args), do: Invocation.invoke_runtime(ctx, fun, args) + def invoke_runtime(fun, args), do: Invocation.invoke_runtime(fun, args) + + def invoke_method_runtime(ctx, fun, this_obj, args), + do: Invocation.invoke_method_runtime(ctx, fun, this_obj, args) + + def invoke_method_runtime(fun, this_obj, args), + do: Invocation.invoke_method_runtime(fun, this_obj, args) + + @doc "Invokes a tail-position JavaScript method from compiled code." + def invoke_tail_method(ctx, fun, this_obj, args), + do: Invocation.invoke_method_runtime(ctx, fun, this_obj, args) + + def define_class(ctx, ctor, parent_ctor, atom_idx) do + ctor_closure = + case ctor do + %Bytecode.Function{} = fun -> {:closure, %{}, fun} + other -> other + end + + Class.define_class( + ctor_closure, + parent_ctor, + Names.resolve_atom(context_atoms(ctx), atom_idx) + ) + end + + def define_class(ctor, parent_ctor, atom_idx) do + ctor_closure = + case ctor do + %Bytecode.Function{} = fun -> {:closure, %{}, fun} + other -> other + end + + Class.define_class( + ctor_closure, + parent_ctor, + Names.resolve_atom(InvokeContext.current_atoms(), atom_idx) + ) + end + + @doc "Defines a method, getter, or setter from compiled code." + def define_method(_ctx, target, method, name, flags) when is_binary(name), + do: define_method(target, method, name, flags) + + def define_method(ctx, target, method, atom_idx, flags), + do: + Methods.define_method( + target, + method, + Names.resolve_atom(context_atoms(ctx), atom_idx), + flags + ) + + def define_method(target, method, name, flags) when is_binary(name), + do: Methods.define_method(target, method, name, flags) + + def define_method(target, method, atom_idx, flags), + do: + Methods.define_method( + target, + method, + Names.resolve_atom(InvokeContext.current_atoms(), atom_idx), + flags + ) + + @doc "Defines a computed-name method, getter, or setter from compiled code." + def define_method_computed(_ctx \\ nil, target, method, field_name, flags), + do: Methods.define_method_computed(target, method, field_name, flags) + + def add_brand(_ctx \\ nil, target, brand), do: Private.add_brand(target, brand) + + def check_brand(_ctx, obj, brand) do + case Private.ensure_brand(obj, brand) do + :ok -> :ok + :error -> throw({:js_throw, Private.brand_error()}) + end + end + + @doc "Throws a JavaScript error value." + def throw_error(ctx, atom_idx, reason) do + name = Names.resolve_atom(context_atoms(ctx), atom_idx) + {error_type, message} = throw_error_message(name, reason) + throw({:js_throw, Heap.make_error(message, error_type)}) + end + + def throw_error_message(name, reason) do + case reason do + 0 -> {"TypeError", "'#{name}' is read-only"} + 1 -> {"SyntaxError", "redeclaration of '#{name}'"} + 2 -> {"ReferenceError", "cannot access '#{name}' before initialization"} + 3 -> {"ReferenceError", "unsupported reference to 'super'"} + 4 -> {"TypeError", "iterator does not have a throw method"} + _ -> {"Error", name} + end + end + + @doc "Applies a superclass constructor for `super(...)`." + def apply_super(ctx, fun, new_target, args), + do: Invocation.construct_runtime(ctx, fun, new_target, args) + + def apply_super(fun, new_target, args), + do: Invocation.construct_runtime(fun, new_target, args) + + def push_this(ctx) do + case context_this(ctx) do + this + when this == :uninitialized or + (is_tuple(this) and tuple_size(this) == 2 and elem(this, 0) == :uninitialized) -> + JSThrow.reference_error!("this is not initialized") + + this -> + this + end + end + + def push_this do + case InvokeContext.current_this() do + this + when this == :uninitialized or + (is_tuple(this) and tuple_size(this) == 2 and elem(this, 0) == :uninitialized) -> + JSThrow.reference_error!("this is not initialized") + + this -> + this + end + end + + @doc "Creates special object forms used by compiled object/class bytecode." + def special_object(ctx, type) do + current_func = context_current_func(ctx) + arg_buf = context_arg_buf(ctx) + + case type do + 0 -> Heap.wrap(Tuple.to_list(arg_buf)) + 1 -> Heap.wrap(Tuple.to_list(arg_buf)) + 2 -> current_func + 3 -> context_new_target(ctx) + 4 -> context_home_object(ctx, current_func) + 5 -> Heap.wrap(%{}) + 6 -> Heap.wrap(%{}) + 7 -> Heap.wrap(%{"__proto__" => nil}) + _ -> :undefined + end + end + + def special_object(type) do + case InvokeContext.fast_ctx() do + {_atoms, _globals, current_func, arg_buf, _this, new_target, home_object, _super} -> + case type do + 0 -> Heap.wrap(Tuple.to_list(arg_buf)) + 1 -> Heap.wrap(Tuple.to_list(arg_buf)) + 2 -> current_func + 3 -> new_target + 4 -> home_object + 5 -> Heap.wrap(%{}) + 6 -> Heap.wrap(%{}) + 7 -> Heap.wrap(%{"__proto__" => nil}) + _ -> :undefined + end + + _ -> + current_func = InvokeContext.current_func() + arg_buf = InvokeContext.current_arg_buf() + + case type do + 0 -> Heap.wrap(Tuple.to_list(arg_buf)) + 1 -> Heap.wrap(Tuple.to_list(arg_buf)) + 2 -> current_func + 3 -> InvokeContext.current_new_target() + 4 -> InvokeContext.current_home_object(current_func) + 5 -> Heap.wrap(%{}) + 6 -> Heap.wrap(%{}) + 7 -> Heap.wrap(%{"__proto__" => nil}) + _ -> :undefined + end + end + end + + @doc "Updates the active `this` value in a context." + def update_this(ctx, this_val), do: Context.mark_dirty(%{ctx | this: this_val}) + + def update_this(this_val) do + case Heap.get_ctx() do + %Context{} = ctx -> Context.mark_dirty(%{ctx | this: this_val}) + map when is_map(map) -> Context.mark_dirty(%{context_struct(map) | this: this_val}) + _ -> ensure_context(nil) |> Map.put(:this, this_val) |> Context.mark_dirty() + end + end + + @doc "Applies JavaScript `instanceof` semantics." + def instanceof({:obj, _} = obj, ctor) do + ctor_proto = Get.get(ctor, "prototype") + prototype_chain_contains?(obj, ctor_proto) + end + + def instanceof(_obj, _ctor), do: false + + def get_length(obj), do: Get.length_of(obj) + + @doc "Loads a registered VM module by name." + def import_module(ctx, specifier) do + if is_binary(specifier) and Map.get(ctx, :runtime_pid) != nil do + QuickBEAM.VM.PromiseState.resolved(QuickBEAM.VM.Runtime.new_object()) + else + QuickBEAM.VM.PromiseState.rejected( + Heap.make_error("Cannot import #{specifier}", "TypeError") + ) + end + end + + def import_module(specifier) do + QuickBEAM.VM.PromiseState.rejected(Heap.make_error("Cannot import #{specifier}", "TypeError")) + end + + # ── Iterators ── + + @doc "Creates iterator state for a JavaScript `for...of` loop." + def for_of_start(ctx, obj) do + case obj do + list when is_list(list) -> + {{:list_iter, list}, :undefined} + + {:obj, ref} = obj_ref -> + case Heap.get_obj(ref) do + {:qb_arr, arr} -> + case check_array_proto_iterator(obj_ref, ref) do + :default -> + {{:list_iter, :array.to_list(arr)}, :undefined} + + :deleted -> + throw( + {:js_throw, Heap.make_error("[Symbol.iterator] is not a function", "TypeError")} + ) + + custom_fn -> + invoke_custom_iter(ctx, custom_fn, obj_ref) + end + + list when is_list(list) -> + case check_array_proto_iterator(obj_ref, ref) do + :default -> + {{:list_iter, list}, :undefined} + + :deleted -> + throw( + {:js_throw, Heap.make_error("[Symbol.iterator] is not a function", "TypeError")} + ) + + custom_fn -> + invoke_custom_iter(ctx, custom_fn, obj_ref) + end + + map when is_map(map) -> + sym_iter = {:symbol, "Symbol.iterator"} + + cond do + Map.has_key?(map, sym_iter) -> + iter_fn = Map.get(map, sym_iter) + iter_obj = Invocation.call_callback(ctx, iter_fn, []) + {iter_obj, Get.get(iter_obj, "next")} + + Map.has_key?(map, "next") -> + {obj_ref, Get.get(obj_ref, "next")} + + true -> + {{:list_iter, []}, :undefined} + end + + _ -> + {{:list_iter, []}, :undefined} + end + + s when is_binary(s) -> + {{:list_iter, String.codepoints(s)}, :undefined} + + nil -> + throw( + {:js_throw, + Heap.make_error( + "Cannot read properties of null (reading 'Symbol(Symbol.iterator)')", + "TypeError" + )} + ) + + :undefined -> + throw( + {:js_throw, + Heap.make_error( + "Cannot read properties of undefined (reading 'Symbol(Symbol.iterator)')", + "TypeError" + )} + ) + + other -> + throw( + {:js_throw, Heap.make_error("#{Values.stringify(other)} is not iterable", "TypeError")} + ) + end + end + + def for_of_start(obj) do + case obj do + list when is_list(list) -> + {{:list_iter, list}, :undefined} + + {:obj, ref} = obj_ref -> + case Heap.get_obj(ref) do + {:qb_arr, arr} -> + case check_array_proto_iterator(obj_ref, ref) do + :default -> + {{:list_iter, :array.to_list(arr)}, :undefined} + + :deleted -> + throw( + {:js_throw, Heap.make_error("[Symbol.iterator] is not a function", "TypeError")} + ) + + custom_fn -> + invoke_custom_iter_ctxless(custom_fn, obj_ref) + end + + list when is_list(list) -> + case check_array_proto_iterator(obj_ref, ref) do + :default -> + {{:list_iter, list}, :undefined} + + :deleted -> + throw( + {:js_throw, Heap.make_error("[Symbol.iterator] is not a function", "TypeError")} + ) + + custom_fn -> + invoke_custom_iter_ctxless(custom_fn, obj_ref) + end + + map when is_map(map) -> + sym_iter = {:symbol, "Symbol.iterator"} + + cond do + Map.has_key?(map, sym_iter) -> + iter_fn = Map.get(map, sym_iter) + iter_obj = Runtime.call_callback(iter_fn, []) + {iter_obj, Get.get(iter_obj, "next")} + + Map.has_key?(map, "next") -> + {obj_ref, Get.get(obj_ref, "next")} + + true -> + {{:list_iter, []}, :undefined} + end + + _ -> + {{:list_iter, []}, :undefined} + end + + s when is_binary(s) -> + {{:list_iter, String.codepoints(s)}, :undefined} + + nil -> + throw( + {:js_throw, + Heap.make_error( + "Cannot read properties of null (reading 'Symbol(Symbol.iterator)')", + "TypeError" + )} + ) + + :undefined -> + throw( + {:js_throw, + Heap.make_error( + "Cannot read properties of undefined (reading 'Symbol(Symbol.iterator)')", + "TypeError" + )} + ) + + other -> + throw( + {:js_throw, Heap.make_error("#{Values.stringify(other)} is not iterable", "TypeError")} + ) + end + end + + @doc "Advances JavaScript `for...of` iterator state." + def for_of_next(_ctx, _next_fn, :undefined), do: {true, :undefined, :undefined} + + def for_of_next(_ctx, _next_fn, {:list_iter, [head | tail]}), + do: {false, head, {:list_iter, tail}} + + def for_of_next(_ctx, _next_fn, {:list_iter, []}), do: {true, :undefined, :undefined} + + def for_of_next(ctx, next_fn, iter_obj) do + result = Invocation.call_callback(ctx, next_fn, []) + done = Get.get(result, "done") + value = Get.get(result, "value") + + if done == true do + {true, :undefined, :undefined} + else + {false, value, iter_obj} + end + end + + def for_of_next(_next_fn, :undefined), do: {true, :undefined, :undefined} + + def for_of_next(_next_fn, {:list_iter, [head | tail]}), + do: {false, head, {:list_iter, tail}} + + def for_of_next(_next_fn, {:list_iter, []}), do: {true, :undefined, :undefined} + + def for_of_next(next_fn, iter_obj) do + result = Runtime.call_callback(next_fn, []) + done = Get.get(result, "done") + value = Get.get(result, "value") + + if done == true do + {true, :undefined, :undefined} + else + {false, value, iter_obj} + end + end + + @doc "Creates key iteration state for a JavaScript `for...in` loop." + def for_in_start(_ctx \\ nil, obj), do: {:for_in_iterator, enumerable_keys(obj)} + + def for_in_next(_ctx \\ nil, iter) + + def for_in_next(_ctx, {:for_in_iterator, [key | rest_keys]}) do + {false, key, {:for_in_iterator, rest_keys}} + end + + def for_in_next(_ctx, {:for_in_iterator, []} = iter) do + {true, :undefined, iter} + end + + def for_in_next(_ctx, iter), do: {true, :undefined, iter} + + @doc "Closes an iterator by calling its `return` method when present." + def iterator_close(_ctx, :undefined), do: :ok + def iterator_close(_ctx, {:list_iter, _}), do: :ok + + def iterator_close(ctx, iter_obj) do + return_fn = Get.get(iter_obj, "return") + + if return_fn != :undefined and return_fn != nil do + Invocation.call_callback(ctx, return_fn, []) + end + + :ok + end + + def iterator_close(:undefined), do: :ok + def iterator_close({:list_iter, _}), do: :ok + + def iterator_close(iter_obj) do + return_fn = Get.get(iter_obj, "return") + + if return_fn != :undefined and return_fn != nil do + Runtime.call_callback(return_fn, []) + end + + :ok + end + + @doc "Collects remaining values from an iterator into a list." + def collect_iterator(%Context{} = ctx, iter, next_fn) do + do_collect(ctx, iter, next_fn, []) + end + + def collect_iterator(iter, next_fn) do + do_collect_ctxless(iter, next_fn, []) + end + + @doc "Appends spread values into an array-like target." + def append_spread(_ctx \\ nil, arr, idx, obj), do: Copy.append_spread(arr, idx, obj) + + def rest(ctx, start_idx) do + arg_buf = context_arg_buf(ctx) + + rest_args = + if start_idx < tuple_size(arg_buf) do + Tuple.to_list(arg_buf) |> Enum.drop(start_idx) + else + [] + end + + Heap.wrap(rest_args) + end + + # ── Misc ── + + @doc "Returns whether a value is either `undefined` or `null`." + def undefined_or_null?(val), do: val == :undefined or val == nil + + def set_name_computed(_ctx \\ nil, fun, name_val), + do: Functions.set_name_computed(fun, name_val) + + # ── Private helpers ── + + defp current_var_ref(idx), do: current_var_ref(current_context(), idx) + + defp current_var_ref(ctx, idx) do + case context_current_func(ctx) do + {:closure, captured, %Bytecode.Function{} = fun} -> + case capture_keys_tuple(fun) do + keys when idx >= 0 and idx < tuple_size(keys) -> + Map.get(captured, elem(keys, idx), :undefined) + + _ -> + :undefined + end + + _ -> + :undefined + end + end + + defp capture_keys_tuple(%Bytecode.Function{closure_vars: vars} = fun) do + case Heap.get_capture_keys(fun.byte_code) do + nil -> + tuple = vars |> Enum.map(&closure_capture_key/1) |> List.to_tuple() + Heap.put_capture_keys(fun.byte_code, tuple) + tuple + + cached -> + cached + end + end + + defp read_var_ref({:cell, _} = cell), do: Closures.read_cell(cell) + defp read_var_ref(other), do: other + + defp checked_var_ref(idx), do: checked_var_ref(current_context(), idx) + + defp checked_var_ref(ctx, idx) do + case current_var_ref(ctx, idx) do + :__tdz__ -> + JSThrow.reference_error!(var_ref_error_message(ctx, idx)) + + {:cell, _} = cell -> + val = Closures.read_cell(cell) + + if val == :__tdz__ and var_ref_name(ctx, idx) == "this" and + derived_this_uninitialized?(ctx) do + JSThrow.reference_error!("this is not initialized") + end + + val + + val -> + val + end + end + + defp write_var_ref({:cell, _} = cell, val), do: Closures.write_cell(cell, val) + defp write_var_ref(_, _), do: :ok + + defp var_ref_error_message(ctx, idx) do + if var_ref_name(ctx, idx) == "this" and derived_this_uninitialized?(ctx) do + "this is not initialized" + else + "Cannot access variable before initialization" + end + end + + defp var_ref_name(ctx, idx) do + case context_current_func(ctx) do + {:closure, _, %Bytecode.Function{closure_vars: vars}} + when idx >= 0 and idx < length(vars) -> + vars + |> Enum.at(idx) + |> Map.get(:name) + |> Names.resolve_display_name(context_atoms(ctx)) + + _ -> + nil + end + end + + defp closure_capture_key(%{closure_type: type, var_idx: idx}), do: {type, idx} + + defp derived_this_uninitialized?(ctx) do + case context_this(ctx) do + this + when this == :uninitialized or + (is_tuple(this) and tuple_size(this) == 2 and elem(this, 0) == :uninitialized) -> + true + + _ -> + false + end + end + + defp current_context do + case Heap.get_ctx() do + %Context{} = ctx -> ctx + map when is_map(map) -> context_struct(map) + _ -> %Context{atoms: Heap.get_atoms(), globals: GlobalEnv.base_globals()} + end + end + + defp prototype_chain_contains?(_, :undefined), do: false + defp prototype_chain_contains?(_, nil), do: false + + defp prototype_chain_contains?({:obj, ref}, target) do + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> + case Map.get(map, proto()) do + ^target -> true + nil -> false + :undefined -> false + parent -> prototype_chain_contains?(parent, target) + end + + _ -> + false + end + end + + defp prototype_chain_contains?(_, _), do: false + + defp do_collect(ctx, iter, next_fn, acc) do + case for_of_next(ctx, next_fn, iter) do + {true, _, _} -> Heap.wrap(Enum.reverse(acc)) + {false, val, new_iter} -> do_collect(ctx, new_iter, next_fn, [val | acc]) + end + end + + defp do_collect_ctxless(iter, next_fn, acc) do + case for_of_next(next_fn, iter) do + {true, _, _} -> Heap.wrap(Enum.reverse(acc)) + {false, val, new_iter} -> do_collect_ctxless(new_iter, next_fn, [val | acc]) + end + end + + defp enumerable_keys(obj), do: Copy.enumerable_keys(obj) + + defp check_array_proto_iterator({:obj, _ref}, _raw_ref) do + sym_iter = {:symbol, "Symbol.iterator"} + + case Heap.get_array_proto() do + {:obj, proto_ref} -> + proto_data = Heap.get_obj(proto_ref, %{}) + + case is_map(proto_data) && Map.get(proto_data, sym_iter) do + nil -> :deleted + false -> :deleted + :deleted -> :deleted + {:builtin, "[Symbol.iterator]", _} -> :default + other -> other + end + + _ -> + :default + end + end + + defp invoke_custom_iter(_ctx, iter_fn, obj) do + iter_obj = Invocation.invoke_with_receiver(iter_fn, [], Runtime.gas_budget(), obj) + + unless is_object(iter_obj) do + throw( + {:js_throw, + Heap.make_error("Result of the Symbol.iterator method is not an object", "TypeError")} + ) + end + + {iter_obj, Get.get(iter_obj, "next")} + end + + defp invoke_custom_iter_ctxless(iter_fn, obj) do + iter_obj = Invocation.invoke_with_receiver(iter_fn, [], Runtime.gas_budget(), obj) + + unless is_object(iter_obj) do + throw( + {:js_throw, + Heap.make_error("Result of the Symbol.iterator method is not an object", "TypeError")} + ) + end + + {iter_obj, Get.get(iter_obj, "next")} + end +end diff --git a/lib/quickbeam/vm/decoder.ex b/lib/quickbeam/vm/decoder.ex new file mode 100644 index 000000000..6c892b07c --- /dev/null +++ b/lib/quickbeam/vm/decoder.ex @@ -0,0 +1,279 @@ +defmodule QuickBEAM.VM.Decoder do + @compile {:inline, + get_u8: 2, + get_i8: 2, + get_u16: 2, + get_i16: 2, + get_u32: 2, + get_i32: 2, + get_atom_u32: 2, + resolve_label: 2, + short_form_operands: 2} + @moduledoc """ + Decodes raw QuickJS bytecode bytes into instruction tuples. + + Returns a tuple of {opcode_integer, args} indexed by instruction position + (NOT byte offset). Labels are resolved to instruction indices via a + byte-offset-to-index map. Opcodes are raw integer tags for O(1) BEAM JIT + jump-table dispatch. + """ + + alias QuickBEAM.VM.Opcodes + import Bitwise + + @type instruction :: {non_neg_integer(), [term()]} + + @spec decode(binary()) :: {:ok, [instruction()]} | {:error, term()} + @doc "Decodes VM bytecode into structured instructions." + def decode(byte_code, arg_count \\ 0) when is_binary(byte_code) do + case build_offset_map(byte_code) do + {:ok, offset_map} -> + decode_pass2(byte_code, byte_size(byte_code), 0, 0, offset_map, [], arg_count) + + {:error, _} = err -> + err + end + end + + defp build_offset_map(bc) do + build_offset_map(bc, byte_size(bc), 0, 0, %{}) + end + + defp build_offset_map(_bc, len, pos, _idx, acc) when pos >= len do + {:ok, acc} + end + + defp build_offset_map(bc, len, pos, idx, acc) do + op = :binary.at(bc, pos) + + case Opcodes.info(op) do + nil -> + {:error, {:unknown_opcode, op, pos}} + + {_name, size, _n_pop, _n_push, _fmt} -> + if pos + size > len do + {:error, {:truncated_instruction, op, pos}} + else + build_offset_map(bc, len, pos + size, idx + 1, Map.put(acc, pos, idx)) + end + end + end + + defp decode_pass2(_bc, len, pos, _idx, _offset_map, acc, _ac) when pos >= len do + {:ok, Enum.reverse(acc)} + end + + defp decode_pass2(bc, len, pos, idx, offset_map, acc, ac) do + op = :binary.at(bc, pos) + + case Opcodes.info(op) do + nil -> + {:error, {:unknown_opcode, op, pos}} + + {_name, size, _n_pop, _n_push, fmt} -> + if pos + size > len do + {:error, {:truncated_instruction, op, pos}} + else + operands = + case fmt do + :none_loc -> short_form_operands(op, ac) + :none_arg -> short_form_operands(op, ac) + :none_var_ref -> short_form_operands(op, ac) + :none_int -> short_form_operands(op, ac) + :npopx -> short_form_operands(op, ac) + _ -> decode_operands(bc, pos + 1, fmt, offset_map, ac) + end + + decode_pass2( + bc, + len, + pos + size, + idx + 1, + offset_map, + [ + {op, operands} | acc + ], + ac + ) + end + end + end + + # Short-form opcodes with implicit operands + # loc variants add arg_count offset; arg/var_ref/call/push don't + + # get_loc0..3 (197-200) + defp short_form_operands(197, ac), do: [0 + ac] + defp short_form_operands(198, ac), do: [1 + ac] + defp short_form_operands(199, ac), do: [2 + ac] + defp short_form_operands(200, ac), do: [3 + ac] + # put_loc0..3 (201-204) + defp short_form_operands(201, ac), do: [0 + ac] + defp short_form_operands(202, ac), do: [1 + ac] + defp short_form_operands(203, ac), do: [2 + ac] + defp short_form_operands(204, ac), do: [3 + ac] + # set_loc0..3 (205-208) + defp short_form_operands(205, ac), do: [0 + ac] + defp short_form_operands(206, ac), do: [1 + ac] + defp short_form_operands(207, ac), do: [2 + ac] + defp short_form_operands(208, ac), do: [3 + ac] + # get_loc0_loc1 (196) + defp short_form_operands(196, ac), do: [0 + ac, 1 + ac] + # get_arg0..3 (209-212) + defp short_form_operands(209, _ac), do: [0] + defp short_form_operands(210, _ac), do: [1] + defp short_form_operands(211, _ac), do: [2] + defp short_form_operands(212, _ac), do: [3] + # put_arg0..3 (213-216) + defp short_form_operands(213, _ac), do: [0] + defp short_form_operands(214, _ac), do: [1] + defp short_form_operands(215, _ac), do: [2] + defp short_form_operands(216, _ac), do: [3] + # set_arg0..3 (217-220) + defp short_form_operands(217, _ac), do: [0] + defp short_form_operands(218, _ac), do: [1] + defp short_form_operands(219, _ac), do: [2] + defp short_form_operands(220, _ac), do: [3] + # get_var_ref0..3 (221-224) + defp short_form_operands(221, _ac), do: [0] + defp short_form_operands(222, _ac), do: [1] + defp short_form_operands(223, _ac), do: [2] + defp short_form_operands(224, _ac), do: [3] + # put_var_ref0..3 (225-228) + defp short_form_operands(225, _ac), do: [0] + defp short_form_operands(226, _ac), do: [1] + defp short_form_operands(227, _ac), do: [2] + defp short_form_operands(228, _ac), do: [3] + # set_var_ref0..3 (229-232) + defp short_form_operands(229, _ac), do: [0] + defp short_form_operands(230, _ac), do: [1] + defp short_form_operands(231, _ac), do: [2] + defp short_form_operands(232, _ac), do: [3] + # call0..3 (238-241) + defp short_form_operands(238, _ac), do: [0] + defp short_form_operands(239, _ac), do: [1] + defp short_form_operands(240, _ac), do: [2] + defp short_form_operands(241, _ac), do: [3] + # push_minus1 (179), push_0..7 (180-187) + defp short_form_operands(179, _ac), do: [-1] + defp short_form_operands(180, _ac), do: [0] + defp short_form_operands(181, _ac), do: [1] + defp short_form_operands(182, _ac), do: [2] + defp short_form_operands(183, _ac), do: [3] + defp short_form_operands(184, _ac), do: [4] + defp short_form_operands(185, _ac), do: [5] + defp short_form_operands(186, _ac), do: [6] + defp short_form_operands(187, _ac), do: [7] + # push_empty_string (192) — no operands + defp short_form_operands(192, _ac), do: [] + # Fallback + defp short_form_operands(_op, _ac), do: [] + + # ── Operand decoding ── + + defp decode_operands(bc, pos, :u8, _om, _ac), do: [get_u8(bc, pos)] + defp decode_operands(bc, pos, :i8, _om, _ac), do: [get_i8(bc, pos)] + defp decode_operands(bc, pos, :u16, _om, _ac), do: [get_u16(bc, pos)] + defp decode_operands(bc, pos, :i16, _om, _ac), do: [get_i16(bc, pos)] + defp decode_operands(bc, pos, :i32, _om, _ac), do: [get_i32(bc, pos)] + defp decode_operands(bc, pos, :u32, _om, _ac), do: [get_u32(bc, pos)] + + defp decode_operands(bc, pos, :u32x2, _om, _ac) do + [get_u32(bc, pos), get_u32(bc, pos + 4)] + end + + defp decode_operands(_bc, _pos, :none, _om, _ac), do: [] + defp decode_operands(bc, pos, :npop, _om, _ac), do: [get_u16(bc, pos)] + + defp decode_operands(bc, pos, :npop_u16, _om, _ac) do + [get_u16(bc, pos), get_u16(bc, pos + 2)] + end + + defp decode_operands(bc, pos, :loc8, _om, ac), do: [get_u8(bc, pos) + ac] + defp decode_operands(bc, pos, :const8, _om, _ac), do: [get_u8(bc, pos)] + defp decode_operands(bc, pos, :loc, _om, ac), do: [get_u16(bc, pos) + ac] + defp decode_operands(bc, pos, :arg, _om, _ac), do: [get_u16(bc, pos)] + defp decode_operands(bc, pos, :var_ref, _om, _ac), do: [get_u16(bc, pos)] + defp decode_operands(bc, pos, :const, _om, _ac), do: [get_u32(bc, pos)] + + defp decode_operands(bc, pos, :label8, om, _ac) do + target_byte = pos + get_i8(bc, pos) + [resolve_label(target_byte, om)] + end + + defp decode_operands(bc, pos, :label16, om, _ac) do + target_byte = pos + get_i16(bc, pos) + [resolve_label(target_byte, om)] + end + + defp decode_operands(bc, pos, :label, om, _ac) do + byte_off = pos + get_i32(bc, pos) + [resolve_label(byte_off, om)] + end + + defp decode_operands(bc, pos, :label_u16, om, _ac) do + byte_off = pos + get_i32(bc, pos) + [resolve_label(byte_off, om), get_u16(bc, pos + 4)] + end + + defp decode_operands(bc, pos, :atom, _om, _ac) do + [get_atom_u32(bc, pos)] + end + + defp decode_operands(bc, pos, :atom_u8, _om, _ac) do + [get_atom_u32(bc, pos), get_u8(bc, pos + 4)] + end + + defp decode_operands(bc, pos, :atom_u16, _om, _ac) do + [get_atom_u32(bc, pos), get_u16(bc, pos + 4)] + end + + defp decode_operands(bc, pos, :atom_label_u8, om, _ac) do + byte_off = pos + 4 + get_i32(bc, pos + 4) + [get_atom_u32(bc, pos), resolve_label(byte_off, om), get_u8(bc, pos + 8)] + end + + defp decode_operands(bc, pos, :atom_label_u16, om, _ac) do + byte_off = pos + 4 + get_i32(bc, pos + 4) + [get_atom_u32(bc, pos), resolve_label(byte_off, om), get_u16(bc, pos + 8)] + end + + defp resolve_label(byte_off, offset_map) do + Map.get(offset_map, byte_off, byte_off) + end + + # ── Byte accessors (little-endian) ── + + defp get_u8(bc, pos), do: :binary.at(bc, pos) + + defp get_i8(bc, pos) do + v = :binary.at(bc, pos) + if v >= 128, do: v - 256, else: v + end + + defp get_u16(bc, pos), do: :binary.decode_unsigned(:binary.part(bc, pos, 2), :little) + + defp get_i16(bc, pos) do + v = get_u16(bc, pos) + if v >= 0x8000, do: v - 0x10000, else: v + end + + defp get_u32(bc, pos), do: :binary.decode_unsigned(:binary.part(bc, pos, 4), :little) + + defp get_i32(bc, pos) do + v = get_u32(bc, pos) + if v >= 0x80000000, do: v - 0x100000000, else: v + end + + @js_atom_end Opcodes.js_atom_end() + defp get_atom_u32(bc, pos) do + v = get_u32(bc, pos) + + cond do + band(v, 0x80000000) != 0 -> {:tagged_int, band(v, 0x7FFFFFFF)} + v >= 1 and v < @js_atom_end -> {:predefined, v} + v >= @js_atom_end -> v - @js_atom_end + true -> {:predefined, v} + end + end +end diff --git a/lib/quickbeam/vm/environment/captures.ex b/lib/quickbeam/vm/environment/captures.ex new file mode 100644 index 000000000..ef2a7d494 --- /dev/null +++ b/lib/quickbeam/vm/environment/captures.ex @@ -0,0 +1,37 @@ +defmodule QuickBEAM.VM.Environment.Captures do + @moduledoc "Helpers for boxing, closing, and synchronizing captured lexical variables." + + alias QuickBEAM.VM.Heap + + @doc "Ensures a captured value is represented by a heap cell." + def ensure({:cell, _} = cell, _val), do: cell + + def ensure(_cell, val) do + ref = make_ref() + Heap.put_cell(ref, val) + {:cell, ref} + end + + @doc "Closes over a captured value by copying it into a fresh heap cell." + def close({:cell, ref}, val) do + current = Heap.get_cell(ref) + next_val = if current == :undefined, do: val, else: current + new_ref = make_ref() + Heap.put_cell(new_ref, next_val) + {:cell, new_ref} + end + + def close(_cell, val) do + ref = make_ref() + Heap.put_cell(ref, val) + {:cell, ref} + end + + @doc "Synchronizes a captured cell with a new local value." + def sync({:cell, ref}, val) do + Heap.put_cell(ref, val) + :ok + end + + def sync(_, _), do: :ok +end diff --git a/lib/quickbeam/vm/execution/trace.ex b/lib/quickbeam/vm/execution/trace.ex new file mode 100644 index 000000000..43e20f461 --- /dev/null +++ b/lib/quickbeam/vm/execution/trace.ex @@ -0,0 +1,29 @@ +defmodule QuickBEAM.VM.Execution.Trace do + @moduledoc "Process-local execution frame trace used for JavaScript stack construction." + + @key :qb_active_frames + + @doc "Returns the active JavaScript call frames for the current process." + def get_frames, do: Process.get(@key, []) + + @doc "Pushes a function frame onto the process-local execution trace." + def push(fun) do + Process.put(@key, [%{fun: fun, pc: 0} | get_frames()]) + end + + @doc "Pops the current function frame from the process-local execution trace." + def pop do + case Process.get(@key, []) do + [_ | rest] -> Process.put(@key, rest) + [] -> :ok + end + end + + @doc "Updates the program counter of the current trace frame." + def update_pc(pc) do + case Process.get(@key, []) do + [frame | rest] -> Process.put(@key, [%{frame | pc: pc} | rest]) + [] -> :ok + end + end +end diff --git a/lib/quickbeam/vm/global_env.ex b/lib/quickbeam/vm/global_env.ex new file mode 100644 index 000000000..04b100cdf --- /dev/null +++ b/lib/quickbeam/vm/global_env.ex @@ -0,0 +1,100 @@ +defmodule QuickBEAM.VM.GlobalEnv do + @moduledoc "Global variable environment: resolves JS globals from the persistent heap and runtime bindings." + + alias QuickBEAM.VM.{Heap, Names, Runtime} + alias QuickBEAM.VM.Interpreter.Context + + @doc "Returns the active JavaScript global environment." + def current do + case Heap.get_ctx() do + %Context{globals: globals} when globals != %{} -> globals + %Context{} -> base_globals() + _ -> base_globals() + end + end + + @doc "Returns cached builtin and persistent global bindings." + def base_globals do + case Heap.get_base_globals() do + nil -> + builtins = Runtime.global_bindings() + persistent = Heap.get_persistent_globals() || %{} + globals = Map.merge(builtins, Map.drop(persistent, Map.keys(builtins))) + Heap.put_base_globals(globals) + globals + + globals -> + globals + end + end + + @doc "Fetches a global binding by name or atom-table index." + def fetch(%Context{} = ctx, atom_idx), do: fetch(ctx.globals, atom_idx, ctx.atoms) + + def fetch(globals, atom_idx) when is_map(globals), + do: fetch(globals, atom_idx, Heap.get_atoms()) + + def fetch(atom_idx), do: fetch(current(), atom_idx, Heap.get_atoms()) + + def get(%Context{} = ctx, atom_idx, default), + do: get(ctx.globals, atom_idx, default, ctx.atoms) + + def get(globals, atom_idx, default) when is_map(globals), + do: get(globals, atom_idx, default, Heap.get_atoms()) + + def get(atom_idx, default), do: get(current(), atom_idx, default, Heap.get_atoms()) + + @doc "Writes a global binding into a context and optionally persists it." + def put(%Context{} = ctx, atom_idx, val, opts \\ []) do + name = Names.resolve_atom(ctx, atom_idx) + globals = Map.put(ctx.globals, name, val) + + if Keyword.get(opts, :persist, true) do + Heap.put_persistent_globals(globals) + Heap.put_base_globals(globals) + end + + %{ctx | globals: globals} |> Context.mark_dirty() + end + + @doc "Defines a hoisted `var` binding in the active global environment." + def define_var(%Context{} = ctx, atom_idx) do + name = Names.resolve_atom(ctx, atom_idx) + Heap.put_var(name, :undefined) + globals = Map.put_new(ctx.globals, name, :undefined) + Heap.put_persistent_globals(globals) + Context.mark_dirty(%{ctx | globals: globals}) + end + + @doc "Clears temporary `var` tracking after declaration checks." + def check_define_var(%Context{} = ctx, atom_idx) do + Heap.delete_var(Names.resolve_atom(ctx, atom_idx)) + Context.mark_dirty(ctx) + end + + def refresh(%Context{} = ctx) do + globals = Map.merge(ctx.globals, Heap.get_persistent_globals() || %{}) + Heap.put_base_globals(globals) + %{ctx | globals: globals} |> Context.mark_dirty() + end + + @doc "Resolves a name from the current atom table." + def current_name(atom_idx), do: Names.resolve_atom(Heap.get_atoms(), atom_idx) + + defp fetch(globals, atom_idx, atoms) do + name = resolve_name(atom_idx, atoms) + + case Map.fetch(globals, name) do + {:ok, val} -> {:found, val} + :error -> :not_found + end + end + + defp get(globals, atom_idx, default, atoms) do + name = resolve_name(atom_idx, atoms) + Map.get(globals, name, default) + end + + defp resolve_name(name, _atoms) when is_binary(name), do: name + defp resolve_name(name, atoms), do: Names.resolve_atom(atoms, name) +end diff --git a/lib/quickbeam/vm/heap.ex b/lib/quickbeam/vm/heap.ex new file mode 100644 index 000000000..6bf9bfe66 --- /dev/null +++ b/lib/quickbeam/vm/heap.ex @@ -0,0 +1,411 @@ +defmodule QuickBEAM.VM.Heap do + @moduledoc """ + Mutable heap storage for JS runtime values. + + All heap access goes through this module — callers never touch + the process dictionary directly. Current implementation uses the + process dictionary for single-process performance; the backing + store can be swapped to ETS for concurrent access. + + ## Storage keys + + - `integer_id` — JS object/array properties (raw integer keys) + - `{:qb_cell, ref}` — closure variable cells + - `{:qb_class_proto, ctor}` — class prototype objects + - `{:qb_parent_ctor, ctor}` — parent constructor references + - `{:qb_var, name}` — global variable bindings + """ + + alias QuickBEAM.VM.Heap.{Arrays, Async, Caches, Context, GC, Registry, Shapes, Store} + + @compile {:inline, + get_obj: 1, + get_obj: 2, + get_obj_raw: 1, + put_obj: 2, + put_obj_raw: 2, + update_obj: 3, + get_cell: 1, + put_cell: 2, + put_var: 2, + delete_var: 1, + get_ctx: 0, + put_ctx: 1, + frozen?: 1, + freeze: 1, + get_decoded: 1, + put_decoded: 2, + get_compiled: 1, + put_compiled: 2, + get_fn_atoms: 1, + get_fn_atoms: 2, + put_fn_atoms: 2, + get_capture_keys: 1, + put_capture_keys: 2, + get_array_proto: 0, + put_array_proto: 1, + get_func_proto: 0, + put_func_proto: 1, + get_builtin_names: 0, + put_builtin_names: 1, + get_regexp_result: 1, + put_regexp_result: 2, + get_string_codepoints: 1, + put_string_codepoints: 2, + get_class_proto: 1, + put_class_proto: 2, + get_parent_ctor: 1, + put_parent_ctor: 2, + get_ctor_statics: 1, + wrap: 1, + to_list: 1, + obj_to_list: 1, + array_get: 2, + array_size: 1, + array_push: 2, + array_set: 3, + make_error: 2, + get_object_prototype: 0, + get_atoms: 0, + get_persistent_globals: 0} + + # ── Convenience constructors ── + + @doc "Wraps maps, lists, arrays, and scalar data in a JavaScript object reference." + def wrap(data) when is_map(data) do + if is_map_key(data, "__proto__") do + {proto, rest} = Map.pop!(data, "__proto__") + wrap_map(rest, proto) + else + wrap_map(data, nil) + end + end + + def wrap(data) do + id = Store.next_id() + put_obj(id, data) + {:obj, id} + end + + defp wrap_map(map, proto) do + case Shapes.from_map(map) do + {:ok, shape_id, offsets, vals} -> + wrap_shaped(shape_id, offsets, vals, proto) + + :ineligible -> + id = Store.next_id() + data = if proto, do: Map.put(map, "__proto__", proto), else: map + put_obj(id, data) + {:obj, id} + end + end + + @doc "Returns an object's prototype, falling back to the cached Array prototype for array values." + def get_array_proto(ref) do + case Store.get_obj_raw(ref) do + {:shape, _, _, _, proto} when proto != nil -> proto + map when is_map(map) -> Map.get(map, "__proto__") + _ -> Caches.get_array_proto() + end + end + + @doc "Wraps a list as a JavaScript iterator object with a `next` method." + def wrap_iterator(list) when is_list(list) do + pos_ref = make_ref() + Process.put(pos_ref, {list, 0}) + + next_fn = + {:builtin, "next", + fn _, _ -> + case Process.get(pos_ref) do + {items, idx} when idx < length(items) -> + Process.put(pos_ref, {items, idx + 1}) + wrap(%{"value" => Enum.at(items, idx), "done" => false}) + + _ -> + wrap(%{"value" => :undefined, "done" => true}) + end + end} + + wrap(%{"next" => next_fn}) + end + + @doc "Fast-wraps a value tuple with a compile-time key tuple, using a cached shape when possible." + def wrap_keyed(keys, vals) when is_tuple(keys) and is_tuple(vals) do + case Caches.get_wrap_cache(keys) do + {shape_id, offsets} -> + id = Store.next_id() + Store.put_obj_raw(id, {:shape, shape_id, offsets, vals, nil}) + {:obj, id} + + nil -> + map = :maps.from_list(:lists.zip(Tuple.to_list(keys), Tuple.to_list(vals))) + + case Shapes.from_map(map) do + {:ok, shape_id, offsets, _} -> + Caches.put_wrap_cache(keys, {shape_id, offsets}) + id = Store.next_id() + Store.put_obj_raw(id, {:shape, shape_id, offsets, vals, nil}) + {:obj, id} + + :ineligible -> + wrap(map) + end + end + end + + @doc "Fast allocation with a pre-resolved shape. Skips eligibility check and key sorting." + def wrap_shaped(shape_id, offsets, vals, proto) do + id = Store.next_id() + Store.put_obj_raw(id, {:shape, shape_id, offsets, vals, proto}) + {:obj, id} + end + + @doc "Converts JavaScript array-like VM values to Elixir lists." + def to_list({:obj, ref}) do + case Process.get(ref, []) do + {:qb_arr, arr} -> + :array.to_list(arr) + + list when is_list(list) -> + list + + {:shape, _shape_id, _offsets, _vals, _proto} -> + [] + + map when is_map(map) -> + len = Map.get(map, "length", 0) + + if is_integer(len) and len > 0, + do: for(i <- 0..(len - 1), do: Map.get(map, Integer.to_string(i), :undefined)), + else: [] + + _ -> + [] + end + end + + def to_list({:qb_arr, _} = arr), do: Arrays.to_list(arr) + def to_list(list) when is_list(list), do: list + def to_list(_), do: [] + + @doc "Creates a JavaScript Error-like object with message, name, prototype, and stack metadata." + def make_error(message, name) do + proto = + case find_error_proto(name) do + nil -> nil + ctor -> get_class_proto(ctor) + end + + base = %{"message" => message, "name" => name, "stack" => ""} + error = if proto, do: wrap(Map.put(base, "__proto__", proto)), else: wrap(base) + + if get_ctx() != nil, + do: QuickBEAM.VM.Stacktrace.attach_stack(error), + else: error + end + + defp find_error_proto(name) do + case get_global_cache() do + nil -> + case get_ctx() do + %{globals: globals} -> Map.get(globals, name) + _ -> nil + end + + cache -> + Map.get(cache, name) + end + end + + @doc "Returns an existing constructor prototype or lazily creates one for function constructors." + def get_or_create_prototype(ctor) do + case get_class_proto(ctor) do + nil -> + # Use stable key based on bytecode identity, not closure tuple reference + stable_key = proto_cache_key(ctor) + key = {:qb_func_proto, stable_key} + + case Process.get(key) do + nil -> + obj_proto = get_object_prototype() + proto_map = %{"constructor" => ctor} + + proto_map = + if obj_proto, do: Map.put(proto_map, "__proto__", obj_proto), else: proto_map + + proto = wrap(proto_map) + Process.put(key, proto) + proto + + existing -> + existing + end + + proto -> + proto + end + end + + # ── Objects ── + + defp proto_cache_key({:closure, _, %{byte_code: bc}}), do: bc + defp proto_cache_key(%{byte_code: bc}), do: bc + defp proto_cache_key(ctor), do: ctor + + @doc "Returns heap object data, reconstructing shaped objects as maps." + defdelegate get_obj(ref), to: Store + defdelegate get_obj(ref, default), to: Store + defdelegate get_obj_raw(ref), to: Store + defdelegate put_obj(ref, value), to: Store + defdelegate put_obj_raw(ref, value), to: Store + defdelegate put_obj_key(ref, key, value), to: Store + defdelegate put_obj_key(ref, map, key, value), to: Store + defdelegate update_obj(ref, default, fun), to: Store + + # ── Array helpers ── + + @doc "Returns a heap object as a list when it stores array-like data." + defdelegate obj_to_list(ref), to: Store + defdelegate array_get(ref, idx), to: Store + defdelegate array_size(ref), to: Store + defdelegate array_push(ref, values), to: Store + defdelegate array_set(ref, idx, value), to: Store + + # ── Closure cells ── + + @doc "Reads a closure/capture cell value." + defdelegate get_cell(ref), to: Store + defdelegate put_cell(ref, value), to: Store + + # ── Class metadata ── + + defdelegate get_class_proto(ctor), to: Store + defdelegate put_class_proto(ctor, proto), to: Store + defdelegate get_parent_ctor(ctor), to: Store + @doc "Stores the parent constructor associated with a class constructor." + defdelegate put_parent_ctor(ctor, parent), to: Store + defdelegate delete_parent_ctor(ctor), to: Store + defdelegate get_ctor_statics(ctor), to: Store + defdelegate put_ctor_statics(ctor, statics), to: Store + defdelegate put_ctor_static(ctor, key, value), to: Store + defdelegate put_var(name, value), to: Store + defdelegate delete_var(name), to: Store + + # ── Interpreter context ── + + @doc "Returns the active interpreter context stored in the process dictionary." + defdelegate get_ctx(), to: Context + defdelegate put_ctx(ctx), to: Context + defdelegate get_decoded(byte_code), to: Caches + defdelegate put_decoded(byte_code, instructions), to: Caches + defdelegate get_compiled(key), to: Caches + defdelegate put_compiled(key, compiled), to: Caches + defdelegate get_fn_atoms(byte_code), to: Caches + defdelegate get_fn_atoms(byte_code, default), to: Caches + @doc "Caches the atom table for a bytecode function." + defdelegate put_fn_atoms(byte_code, atoms), to: Caches + defdelegate get_capture_keys(byte_code), to: Caches + defdelegate put_capture_keys(byte_code, tuple), to: Caches + defdelegate get_array_proto(), to: Caches + defdelegate put_array_proto(proto), to: Caches + defdelegate get_func_proto(), to: Caches + defdelegate put_func_proto(proto), to: Caches + defdelegate get_builtin_names(), to: Caches + @doc "Stores builtin-name metadata." + defdelegate put_builtin_names(names), to: Caches + defdelegate get_regexp_result(ref), to: Caches + defdelegate put_regexp_result(ref, result), to: Caches + defdelegate get_string_codepoints(s), to: Caches + defdelegate put_string_codepoints(s, chars), to: Caches + defdelegate get_invoke_depth(), to: Caches + defdelegate put_invoke_depth(depth), to: Caches + defdelegate get_eval_restore_stack(), to: Caches + @doc "Stores the eval restore stack for the current process." + defdelegate put_eval_restore_stack(stack), to: Caches + defdelegate frozen?(ref), to: Store + defdelegate freeze(ref), to: Store + defdelegate get_prop_desc(ref, key), to: Store + defdelegate put_prop_desc(ref, key, desc), to: Store + defdelegate get_object_prototype(), to: Context + defdelegate put_object_prototype(proto), to: Context + defdelegate get_global_cache(), to: Context + @doc "Stores cached global bindings and invalidates derived base globals." + defdelegate put_global_cache(bindings), to: Context + defdelegate get_base_globals(), to: Context + defdelegate put_base_globals(globals), to: Context + defdelegate get_atoms(), to: Context + defdelegate put_atoms(atoms), to: Context + defdelegate get_persistent_globals(), to: Context + defdelegate put_persistent_globals(globals), to: Context + defdelegate get_handler_globals(), to: Context + @doc "Stores host-provided handler globals and invalidates derived base globals." + defdelegate put_handler_globals(globals), to: Context + defdelegate get_runtime_mode(runtime), to: Context + defdelegate put_runtime_mode(runtime, mode), to: Context + defdelegate enqueue_microtask(task), to: Async + defdelegate dequeue_microtask(), to: Async + defdelegate get_promise_waiters(ref), to: Async + defdelegate put_promise_waiters(ref, waiters), to: Async + defdelegate delete_promise_waiters(ref), to: Async + @doc "Registers a compiled module and its exports in the process-local registry." + defdelegate register_module(name, exports), to: Registry + defdelegate get_module(name), to: Registry + defdelegate all_module_exports(), to: Registry + defdelegate get_symbol(key), to: Registry + defdelegate put_symbol(key, sym), to: Registry + + # ── Garbage collection ── + + @doc "Returns the allocation threshold that triggers the first heap GC pass." + defdelegate gc_initial_threshold(), to: GC + defdelegate gc_needed?(), to: GC + defdelegate mark_and_sweep(roots), to: GC + + @doc "Clear all heap state. Used in test setup." + def reset do + for key <- Process.get_keys() do + case key do + id when is_integer(id) and id > 0 -> Process.delete(key) + {:qb_cell, _} -> Process.delete(key) + {:qb_class_proto, _} -> Process.delete(key) + {:qb_func_proto, _} -> Process.delete(key) + {:qb_decoded, _} -> Process.delete(key) + {:qb_compiled, _} -> Process.delete(key) + {:qb_promise_waiters, _} -> Process.delete(key) + {:qb_module, _} -> Process.delete(key) + {:qb_prop_desc, _, _} -> Process.delete(key) + {:qb_frozen, _} -> Process.delete(key) + {:qb_var, _} -> Process.delete(key) + {:qb_key_order, _} -> Process.delete(key) + {:qb_runtime_mode, _} -> Process.delete(key) + {:qb_alloc_count, _} -> Process.delete(key) + {:qb_gc_threshold, _} -> Process.delete(key) + {:qb_symbol_registry, _} -> Process.delete(key) + {:qb_ctor_statics, _} -> Process.delete(key) + {:qb_parent_ctor, _} -> Process.delete(key) + :qb_persistent_globals -> Process.delete(key) + :qb_handler_globals -> Process.delete(key) + :qb_atoms -> Process.delete(key) + :qb_module_list -> Process.delete(key) + :qb_ctx -> Process.delete(key) + :qb_gc_needed -> Process.delete(key) + :qb_alloc_count -> Process.delete(key) + :qb_next_id -> Process.delete(key) + :qb_object_prototype -> Process.delete(key) + :qb_global_bindings_cache -> Process.delete(key) + :qb_base_globals_cache -> Process.delete(key) + :qb_microtask_queue -> Process.delete(key) + :qb_shape_table -> Process.delete(key) + :qb_shape_empty -> Process.delete(key) + :qb_shape_next_id -> Process.delete(key) + _ -> :ok + end + end + + :ok + end + + @doc "Runs heap garbage collection using the active VM roots plus extra roots." + defdelegate gc(extra_roots \\ []), to: GC +end diff --git a/lib/quickbeam/vm/heap/arrays.ex b/lib/quickbeam/vm/heap/arrays.ex new file mode 100644 index 000000000..168a76afc --- /dev/null +++ b/lib/quickbeam/vm/heap/arrays.ex @@ -0,0 +1,32 @@ +defmodule QuickBEAM.VM.Heap.Arrays do + @moduledoc "Array storage operations for the JS object heap." + + @doc "Converts heap array storage to a plain Elixir list." + def to_list({:qb_arr, arr}), do: :array.to_list(arr) + def to_list(list) when is_list(list), do: list + + def length({:qb_arr, arr}), do: :array.size(arr) + def length(list) when is_list(list), do: Kernel.length(list) + + def get({:qb_arr, arr}, idx) when idx >= 0 do + if idx < :array.size(arr), do: :array.get(idx, arr), else: :undefined + end + + def get({:qb_arr, _}, _), do: :undefined + def get(list, idx) when is_list(list) and idx >= 0, do: Enum.at(list, idx, :undefined) + def get(_, _), do: :undefined + + @doc "Writes an array element, padding missing indexes with `:undefined` when needed." + def put({:qb_arr, arr}, idx, val), do: {:qb_arr, :array.set(idx, val, arr)} + + def put(list, idx, val) when is_list(list) and idx >= 0 and idx < Kernel.length(list), + do: List.replace_at(list, idx, val) + + def put(list, idx, val) when is_list(list) and idx >= 0, + do: list ++ List.duplicate(:undefined, idx - Kernel.length(list)) ++ [val] + + @doc "Returns whether a value uses a supported heap array representation." + def array?({:qb_arr, _}), do: true + def array?(list) when is_list(list), do: true + def array?(_), do: false +end diff --git a/lib/quickbeam/vm/heap/async.ex b/lib/quickbeam/vm/heap/async.ex new file mode 100644 index 000000000..50bf44d52 --- /dev/null +++ b/lib/quickbeam/vm/heap/async.ex @@ -0,0 +1,30 @@ +defmodule QuickBEAM.VM.Heap.Async do + @moduledoc "Process-local queues for microtasks and promise waiters." + + @doc "Adds a microtask to the process-local JavaScript microtask queue." + def enqueue_microtask(task) do + queue = Process.get(:qb_microtask_queue, :queue.new()) + Process.put(:qb_microtask_queue, :queue.in(task, queue)) + end + + @doc "Removes and returns the next queued microtask, or `nil` when the queue is empty." + def dequeue_microtask do + queue = Process.get(:qb_microtask_queue, :queue.new()) + + case :queue.out(queue) do + {{:value, task}, rest} -> + Process.put(:qb_microtask_queue, rest) + task + + {:empty, _} -> + nil + end + end + + @doc "Returns callbacks waiting for the promise identified by `ref`." + def get_promise_waiters(ref), do: Process.get({:qb_promise_waiters, ref}, []) + @doc "Stores callbacks waiting for the promise identified by `ref`." + def put_promise_waiters(ref, waiters), do: Process.put({:qb_promise_waiters, ref}, waiters) + @doc "Deletes waiter state for the promise identified by `ref`." + def delete_promise_waiters(ref), do: Process.delete({:qb_promise_waiters, ref}) +end diff --git a/lib/quickbeam/vm/heap/caches.ex b/lib/quickbeam/vm/heap/caches.ex new file mode 100644 index 000000000..b1d01f3d4 --- /dev/null +++ b/lib/quickbeam/vm/heap/caches.ex @@ -0,0 +1,85 @@ +defmodule QuickBEAM.VM.Heap.Caches do + @moduledoc "Process-local caches for decoded bytecode, prototypes, transient call state, and runtime metadata." + + # ── Bytecode caches ── + + @doc "Returns cached decoded instructions for a bytecode binary." + def get_decoded(byte_code), do: Process.get({:qb_decoded, byte_code}) + + def put_decoded(byte_code, instructions), + do: Process.put({:qb_decoded, byte_code}, instructions) + + @doc "Returns cached compiled code for a compiler cache key." + def get_compiled(key), do: Process.get({:qb_compiled, key}) + def put_compiled(key, compiled), do: Process.put({:qb_compiled, key}, compiled) + + def get_fn_atoms(byte_code, default \\ nil), + do: Process.get({:qb_fn_atoms, byte_code}, default) + + @doc "Caches the atom table for a bytecode function." + def put_fn_atoms(byte_code, atoms), do: Process.put({:qb_fn_atoms, byte_code}, atoms) + + def get_capture_keys(byte_code), do: Process.get({:qb_capture_keys, byte_code}) + def put_capture_keys(byte_code, tuple), do: Process.put({:qb_capture_keys, byte_code}, tuple) + + @doc "Returns cached object-shape wrapping metadata for a key tuple." + def get_wrap_cache(keys_tuple), do: Process.get({:qb_wrap_cache, keys_tuple}) + + def put_wrap_cache(keys_tuple, shape_info), + do: Process.put({:qb_wrap_cache, keys_tuple}, shape_info) + + # ── Runtime prototype caches ── + + @doc "Returns the process-local Array prototype object." + def get_array_proto, do: Process.get(:qb_array_proto) + def put_array_proto(proto), do: Process.put(:qb_array_proto, proto) + + def get_func_proto, do: Process.get(:qb_func_proto) + def put_func_proto(proto), do: Process.put(:qb_func_proto, proto) + + @doc "Returns cached builtin-name metadata." + def get_builtin_names, do: Process.get(:qb_builtin_names) + def put_builtin_names(names), do: Process.put(:qb_builtin_names, names) + + # ── Per-call ephemeral caches ── + + @doc "Returns cached RegExp match result data for an object reference." + def get_regexp_result(ref), do: Process.get({:qb_regexp_result, ref}) + def put_regexp_result(ref, result), do: Process.put({:qb_regexp_result, ref}, result) + + def get_string_codepoints(s), do: Process.get({:qb_string_codepoints, s}) + def put_string_codepoints(s, chars), do: Process.put({:qb_string_codepoints, s}, chars) + + # ── Invocation depth ── + + @doc "Returns the current runtime invocation depth." + def get_invoke_depth, do: Process.get(:qb_invoke_depth, 0) + def put_invoke_depth(depth), do: Process.put(:qb_invoke_depth, depth) + + # ── Eval restore stack ── + + @doc "Returns the eval restore stack for the current process." + def get_eval_restore_stack, do: Process.get(:qb_eval_restore_stack, []) + def put_eval_restore_stack(stack), do: Process.put(:qb_eval_restore_stack, stack) + + # ── Function type inference recursion guard ── + + @doc "Returns the recursion guard set used during function type inference." + def get_function_type_stack, do: Process.get(:qb_function_type_stack, MapSet.new()) + def put_function_type_stack(stack), do: Process.put(:qb_function_type_stack, stack) + def delete_function_type_stack, do: Process.delete(:qb_function_type_stack) + + # ── Home object storage ── + + @doc "Returns cached home-object metadata for a function key." + def get_home_object(key), do: Process.get({:qb_home_object, key}, :undefined) + def put_home_object(key, target), do: Process.put({:qb_home_object, key}, target) + + # ── Timer state ── + + @doc "Returns the process-local timer queue." + def get_timer_queue, do: Process.get(:qb_timer_queue, []) + def put_timer_queue(queue), do: Process.put(:qb_timer_queue, queue) + def get_timer_next_id, do: Process.get(:qb_timer_next_id, 1) + def put_timer_next_id(id), do: Process.put(:qb_timer_next_id, id) +end diff --git a/lib/quickbeam/vm/heap/context.ex b/lib/quickbeam/vm/heap/context.ex new file mode 100644 index 000000000..6a54367bd --- /dev/null +++ b/lib/quickbeam/vm/heap/context.ex @@ -0,0 +1,71 @@ +defmodule QuickBEAM.VM.Heap.Context do + @moduledoc "Interpreter context store: reads and writes the active `Context` struct via process dictionary." + + alias QuickBEAM.VM.Interpreter.Context + + @doc "Returns the active interpreter context stored in the process dictionary." + def get_ctx do + case Process.get(:qb_ctx, :__qb_missing__) do + :__qb_missing__ -> + case Process.get(:qb_fast_ctx, :__qb_missing__) do + {atoms, globals, current_func, arg_buf, this, new_target, home_object, super} -> + %Context{ + atoms: atoms, + globals: globals, + current_func: current_func, + arg_buf: arg_buf, + this: this, + new_target: new_target, + home_object: home_object, + super: super + } + + _ -> + nil + end + + ctx -> + ctx + end + end + + @doc "Stores or clears the active interpreter context." + def put_ctx(nil), do: Process.delete(:qb_ctx) + def put_ctx(ctx), do: Process.put(:qb_ctx, ctx) + + def get_object_prototype, do: Process.get(:qb_object_prototype) + def put_object_prototype(proto), do: Process.put(:qb_object_prototype, proto) + + def get_global_cache, do: Process.get(:qb_global_bindings_cache) + + @doc "Stores cached global bindings and invalidates derived base globals." + def put_global_cache(bindings) do + Process.delete(:qb_base_globals_cache) + Process.put(:qb_global_bindings_cache, bindings) + end + + def get_base_globals, do: Process.get(:qb_base_globals_cache) + def put_base_globals(globals), do: Process.put(:qb_base_globals_cache, globals) + + @doc "Returns the current bytecode atom table." + def get_atoms, do: Process.get(:qb_atoms, {}) + def put_atoms(atoms), do: Process.put(:qb_atoms, atoms) + + def get_persistent_globals, do: Process.get(:qb_persistent_globals, %{}) + + def put_persistent_globals(globals) do + Process.put(:qb_persistent_globals, globals) + end + + @doc "Returns host-provided handler globals." + def get_handler_globals, do: Process.get(:qb_handler_globals) + + def put_handler_globals(globals) do + Process.delete(:qb_base_globals_cache) + Process.put(:qb_handler_globals, globals) + end + + def get_runtime_mode(runtime), do: Process.get({:qb_runtime_mode, runtime}) + @doc "Stores the mode associated with a runtime process." + def put_runtime_mode(runtime, mode), do: Process.put({:qb_runtime_mode, runtime}, mode) +end diff --git a/lib/quickbeam/vm/heap/gc.ex b/lib/quickbeam/vm/heap/gc.ex new file mode 100644 index 000000000..274275580 --- /dev/null +++ b/lib/quickbeam/vm/heap/gc.ex @@ -0,0 +1,134 @@ +defmodule QuickBEAM.VM.Heap.GC do + @moduledoc "Mark-and-sweep garbage collector for the JS object heap." + + alias QuickBEAM.VM.Heap.{Context, Registry, Store} + + @gc_initial_threshold 5_000 + @doc "Returns the allocation threshold that triggers the first heap GC pass." + def gc_initial_threshold, do: @gc_initial_threshold + + def gc_needed?, do: Process.get(:qb_gc_needed, false) + + def mark_and_sweep(roots) do + marked = mark(roots, MapSet.new()) + sweep_heap(marked) + live_count = MapSet.size(marked) + Process.put(:qb_alloc_count, live_count) + Process.put(:qb_gc_threshold, live_count + max(live_count, @gc_initial_threshold)) + Process.delete(:qb_gc_needed) + end + + @doc "Helper for mark-and-sweep garbage collector for the js object heap." + def gc(extra_roots \\ []) do + module_roots = Registry.all_module_exports() + persistent_roots = Context.get_persistent_globals() |> Map.values() + all_roots = List.wrap(extra_roots) ++ module_roots ++ persistent_roots + + marked = if all_roots == [], do: nil, else: mark(all_roots, MapSet.new()) + sweep_all(marked) + end + + # ── Mark phase ── + + defp mark([], visited), do: visited + + defp mark([{:obj, ref} | rest], visited) do + mark_ref(ref, rest, visited, fn + {:shape, _shape_id, _offsets, vals, proto} -> + Tuple.to_list(vals) ++ [proto] + + map when is_map(map) -> + Map.values(map) ++ Map.keys(map) + + {:qb_arr, arr} -> + :array.to_list(arr) + + list when is_list(list) -> + list + + _ -> + [] + end) + end + + defp mark([{:cell, ref} | rest], visited) do + mark_ref({:qb_cell, ref}, rest, visited, fn val -> [val] end) + end + + defp mark( + [{:closure, captured, %QuickBEAM.VM.Bytecode.Function{} = fun} = closure | rest], + visited + ) do + related = [ + Store.get_class_proto(closure), + Store.get_class_proto(fun), + Store.get_parent_ctor(fun) + ] + + statics = + Map.values(Store.get_ctor_statics(closure)) ++ Map.values(Store.get_ctor_statics(fun)) + + mark(Map.values(captured) ++ related ++ statics ++ rest, visited) + end + + defp mark([{:builtin, _, _} = builtin | rest], visited) do + related = [Store.get_class_proto(builtin), Store.get_parent_ctor(builtin)] + statics = Map.values(Store.get_ctor_statics(builtin)) + mark(related ++ statics ++ rest, visited) + end + + defp mark([%QuickBEAM.VM.Bytecode.Function{} = fun | rest], visited) do + related = [Store.get_class_proto(fun), Store.get_parent_ctor(fun)] + statics = Map.values(Store.get_ctor_statics(fun)) + mark(Map.values(Map.from_struct(fun)) ++ related ++ statics ++ rest, visited) + end + + defp mark([tuple | rest], visited) when is_tuple(tuple), + do: mark(Tuple.to_list(tuple) ++ rest, visited) + + defp mark([list | rest], visited) when is_list(list), + do: mark(list ++ rest, visited) + + defp mark([%{} = map | rest], visited), + do: mark(Map.values(map) ++ rest, visited) + + defp mark([_ | rest], visited), do: mark(rest, visited) + + defp mark_ref(key, rest, visited, children_fn) do + if MapSet.member?(visited, key) do + mark(rest, visited) + else + visited = MapSet.put(visited, key) + children = children_fn.(Process.get(key, :undefined)) + mark(children ++ rest, visited) + end + end + + # ── Sweep phase ── + + defp sweep_heap(marked) do + for key <- Process.get_keys(), heap_key?(key), not MapSet.member?(marked, key) do + Process.delete(key) + end + end + + defp sweep_all(marked) do + for key <- Process.get_keys() do + cond do + heap_key?(key) -> unless marked && MapSet.member?(marked, key), do: Process.delete(key) + ephemeral_key?(key) -> Process.delete(key) + true -> :ok + end + end + end + + defp heap_key?(key) when is_integer(key) and key > 0, do: true + defp heap_key?({:qb_cell, _}), do: true + defp heap_key?(_), do: false + + defp ephemeral_key?({:qb_prop_desc, _, _}), do: true + defp ephemeral_key?({:qb_frozen, _}), do: true + defp ephemeral_key?({:qb_var, _}), do: true + defp ephemeral_key?({:qb_key_order, _}), do: true + defp ephemeral_key?(_), do: false +end diff --git a/lib/quickbeam/vm/heap/keys.ex b/lib/quickbeam/vm/heap/keys.ex new file mode 100644 index 000000000..c7917a87a --- /dev/null +++ b/lib/quickbeam/vm/heap/keys.ex @@ -0,0 +1,46 @@ +defmodule QuickBEAM.VM.Heap.Keys do + @moduledoc "Canonical internal property keys shared across heap, runtime, and object-model modules." + + @proto "__proto__" + @promise_state "__promise_state__" + @promise_value "__promise_value__" + @map_data "__map_data__" + @set_data "__set_data__" + @typed_array "__typed_array__" + @date_ms "__date_ms__" + @proxy_target "__proxy_target__" + @proxy_handler "__proxy_handler__" + @buffer "__buffer__" + @key_order :__key_order__ + @primitive_value "__primitive_value__" + @type_key "__type__" + @offset "__offset__" + + @doc "Internal object prototype property key." + defmacro proto, do: @proto + @doc "Internal promise state property key." + defmacro promise_state, do: @promise_state + @doc "Internal promise value property key." + defmacro promise_value, do: @promise_value + @doc "Internal Map storage property key." + defmacro map_data, do: @map_data + @doc "Internal Set storage property key." + defmacro set_data, do: @set_data + @doc "Internal typed-array marker property key." + defmacro typed_array, do: @typed_array + defmacro date_ms, do: @date_ms + defmacro proxy_target, do: @proxy_target + defmacro proxy_handler, do: @proxy_handler + @doc "Internal ArrayBuffer backing binary property key." + defmacro buffer, do: @buffer + defmacro key_order, do: @key_order + defmacro primitive_value, do: @primitive_value + defmacro type_key, do: @type_key + defmacro offset, do: @offset + + @doc "Returns true when a property key uses the VM internal `__name__` convention." + def internal?(key) when is_binary(key), + do: String.starts_with?(key, "__") and String.ends_with?(key, "__") + + def internal?(_), do: false +end diff --git a/lib/quickbeam/vm/heap/registry.ex b/lib/quickbeam/vm/heap/registry.ex new file mode 100644 index 000000000..dda93f63c --- /dev/null +++ b/lib/quickbeam/vm/heap/registry.ex @@ -0,0 +1,93 @@ +defmodule QuickBEAM.VM.Heap.Registry do + @moduledoc """ + Documents all process dictionary keys used by the BEAM VM, and owns + module/symbol registration. + + ## Heap objects + - `integer_id` (positive integer) — JS object/array data (map, list, shape, `{:qb_arr, …}`) + - `{:qb_cell, ref}` — closure variable cell + + ## Object metadata (ephemeral — cleared by GC) + - `{:qb_prop_desc, ref, key}` — property descriptor override + - `{:qb_frozen, ref}` — frozen-object flag + - `{:qb_var, name}` — global variable binding + - `{:qb_key_order, ref}` — explicit property insertion order + + ## Constructor / class metadata + - `{:qb_class_proto, fun}` — class prototype object + - `{:qb_func_proto, fun}` — Function.prototype ref (per closure) + - `{:qb_parent_ctor, fun}` — parent constructor reference + - `{:qb_ctor_statics, fun}` — constructor static properties map + - `{:qb_home_object, bytecode_ref}` — home object for `super` dispatch + + ## Interpreter context + - `:qb_ctx` — current interpreter `Context` struct + - `:qb_fast_ctx` — fast-path context tuple (atoms, globals, func, arg_buf, this, new_target, home_object, super) + - `:qb_atoms` — predefined atom table (tuple of strings) + - `:qb_object_prototype` — Object.prototype heap ref + - `:qb_array_proto` — Array.prototype heap ref (set by globals initializer) + - `:qb_func_proto` — global Function.prototype heap ref + + ## Globals / modules + - `:qb_persistent_globals` — globals that survive `gc/0` + - `:qb_handler_globals` — handler-installed globals + - `:qb_global_bindings_cache` — cached runtime global bindings map + - `:qb_base_globals_cache` — merged base-globals cache + - `{:qb_runtime_mode, runtime_pid}` — per-runtime execution mode + - `{:qb_module, name}` — exported bindings for a named module + - `:qb_module_list` — list of registered module names + - `{:qb_symbol_registry, key}` — global Symbol registry entry + + ## Caches (safe to drop — recomputed on demand) + - `{:qb_compiled, key}` — compiled function cache + - `{:qb_decoded, key}` — decoded bytecode instruction cache + - `{:qb_fn_atoms, bytecode}` — per-function atom table cache + - `{:qb_capture_keys, bytecode}` — closure capture-key tuple cache + - `{:qb_wrap_cache, keys_tuple}` — shape info cache for `Heap.wrap_keyed/2` + - `{:qb_regexp_result, ref}` — last RegExp exec result (indices, groups) + - `{:qb_string_codepoints, string}` — codepoint list cache for string iteration + - `:qb_builtin_names` — `MapSet` of built-in global names (for `typeof` guard) + - `:qb_shape_table` — shape-id → key-list table + - `:qb_shape_empty` — empty shape id + - `:qb_shape_next_id` — next shape id counter + + ## GC bookkeeping + - `:qb_alloc_count` — live object count after last GC + - `:qb_gc_threshold` — allocation count that triggers next GC + - `:qb_gc_needed` — flag set when threshold is exceeded + - `:qb_next_id` — monotonic heap object id counter + + ## Ephemeral / call-stack + - `:qb_invoke_depth` — current synchronous call-stack depth + - `:qb_eval_restore_stack` — per-eval object-mutation undo log + - `:qb_function_type_stack` — compile-time function-type inference stack + - `:qb_active_frames` — stacktrace frame list + - `{:qb_promise_waiters, ref}` — promise continuation list + + ## Misc + - `{:qb_microtask_queue, …}` — microtask queue entries + + ## Timer state + - `:qb_timer_queue` — list of pending timer entries (setTimeout/setInterval) + - `:qb_timer_next_id` — monotonic counter for timer IDs + """ + + @doc "Registers a compiled module and its exports in the process-local registry." + def register_module(name, exports) do + Process.put({:qb_module, name}, exports) + existing = Process.get(:qb_module_list, []) + unless name in existing, do: Process.put(:qb_module_list, [name | existing]) + end + + def get_module(name), do: Process.get({:qb_module, name}) + + @doc "Returns all registered module exports." + def all_module_exports do + Process.get(:qb_module_list, []) + |> Enum.map(&Process.get({:qb_module, &1})) + |> Enum.reject(&is_nil/1) + end + + def get_symbol(key), do: Process.get({:qb_symbol_registry, key}) + def put_symbol(key, sym), do: Process.put({:qb_symbol_registry, key}, sym) +end diff --git a/lib/quickbeam/vm/heap/shapes.ex b/lib/quickbeam/vm/heap/shapes.ex new file mode 100644 index 000000000..5ed7d9ebe --- /dev/null +++ b/lib/quickbeam/vm/heap/shapes.ex @@ -0,0 +1,222 @@ +defmodule QuickBEAM.VM.Heap.Shapes do + @moduledoc """ + Hidden-class shape tracking for plain JS objects. + + When objects are created with a consistent set of property names, + they share a "shape" that maps each property name to a fixed tuple + offset. Property access becomes O(1) tuple indexing instead of + O(log n) map lookup. + + Shape-backed objects are stored as + {:shape, shape_id, offsets_map, values_tuple, proto_ref} + in the process dictionary under the object's integer ID key. + + Objects that gain accessors, internal keys, or otherwise become + non-plain deopt back to regular maps. + """ + + @empty_shape 0 + + # ── Shape registry (per-process) ── + + defp shape_table do + case Process.get(:qb_shape_table) do + nil -> + empty = %{ + keys: [], + offsets: %{}, + parent_id: nil, + transitions: %{} + } + + table = {empty} + Process.put(:qb_shape_table, table) + table + + table -> + table + end + end + + defp next_shape_id do + tuple_size(shape_table()) + end + + @doc "Returns shape metadata for a shape id." + def get_shape(id) do + elem(shape_table(), id) + end + + defp put_shape(id, shape) do + table = shape_table() + + new_table = + if id == tuple_size(table) do + :erlang.append_element(table, shape) + else + put_elem(table, id, shape) + end + + Process.put(:qb_shape_table, new_table) + end + + # ── Public API ── + + @doc "Returns the canonical empty object shape id." + def empty_shape_id, do: @empty_shape + + @doc "Return the offset for `key` in `shape_id`, or `:error`." + def lookup(shape_id, key) do + shape = get_shape(shape_id) + Map.fetch(shape.offsets, key) + end + + @doc "Return the ordered list of keys for `shape_id`." + def keys(shape_id) do + get_shape(shape_id).keys + end + + @doc """ + Transition `shape_id` by adding `key`. + Returns `{new_shape_id, offset}`. + """ + def transition(shape_id, key) do + shape = get_shape(shape_id) + offset = map_size(shape.offsets) + + case Map.get(shape.transitions, key) do + nil -> + new_id = next_shape_id() + new_offsets = Map.put(shape.offsets, key, offset) + + new_shape = %{ + keys: shape.keys ++ [key], + offsets: new_offsets, + parent_id: shape_id, + transitions: %{} + } + + put_shape(new_id, new_shape) + + put_shape(shape_id, %{ + shape + | transitions: Map.put(shape.transitions, key, {new_id, new_offsets}) + }) + + {new_id, new_offsets, offset} + + {child_id, child_offsets} -> + {child_id, child_offsets, offset} + end + end + + @doc """ + Convert a plain map (without `__proto__`) into a shape and values tuple. + Returns `{:ok, shape_id, values_tuple}` or `:ineligible`. + """ + def from_map(map) when is_map(map) and map_size(map) == 0 do + {:ok, @empty_shape, %{}, {}} + end + + def from_map(map) when is_map(map) do + case resolve_shape_for_map(map) do + {shape_id, offsets} -> + vals = + offsets + |> Enum.sort_by(fn {_k, offset} -> offset end) + |> Enum.map(fn {k, _offset} -> Map.get(map, k) end) + |> :erlang.list_to_tuple() + + {:ok, shape_id, offsets, vals} + + :ineligible -> + :ineligible + end + end + + def from_map(_), do: :ineligible + + defp resolve_shape_for_map(map) do + size = map_size(map) + cache_key = {:qb_shape_cache, size, :erlang.phash2(:maps.keys(map))} + + case Process.get(cache_key) do + nil -> + case build_shape(map) do + :ineligible -> + :ineligible + + shape_id -> + offsets = get_shape(shape_id).offsets + Process.put(cache_key, {shape_id, offsets}) + {shape_id, offsets} + end + + result -> + result + end + end + + defp build_shape(map) do + keys = :maps.keys(map) + + if Enum.all?(keys, &(is_binary(&1) and not internal_key?(&1))) and + Enum.all?(:maps.values(map), &simple_value?/1) do + # For flatmaps, keys are already sorted + {shape_id, _, _} = + Enum.reduce(keys, {@empty_shape, %{}, 0}, fn key, {sid, _, _} -> + transition(sid, key) + end) + + shape_id + else + :ineligible + end + end + + @doc "Reconstruct a plain map from a shape-backed representation." + def to_map(shape_id, vals, proto) do + keys = keys(shape_id) + map = keys_vals_to_map(keys, vals, 0, %{}) + if proto, do: Map.put(map, "__proto__", proto), else: map + end + + defp keys_vals_to_map([], _vals, _idx, acc), do: acc + + defp keys_vals_to_map([k | ks], vals, idx, acc), + do: keys_vals_to_map(ks, vals, idx + 1, Map.put(acc, k, elem(vals, idx))) + + @doc "Check whether a stored heap value is shape-backed." + def shape?({:shape, _, _, _, _}), do: true + def shape?(_), do: false + + @doc "Grow or update a values tuple at `offset`." + def put_val(vals, offset, val) when offset < tuple_size(vals) do + put_elem(vals, offset, val) + end + + def put_val(vals, offset, val) when offset == tuple_size(vals) do + :erlang.append_element(vals, val) + end + + def put_val(vals, offset, val) do + padding = offset - tuple_size(vals) + + padded = + Enum.reduce(1..padding, vals, fn _, acc -> :erlang.append_element(acc, :undefined) end) + + :erlang.append_element(padded, val) + end + + # ── Eligibility ── + + defp internal_key?(key) when is_binary(key), + do: String.starts_with?(key, "__") and String.ends_with?(key, "__") and byte_size(key) > 2 + + defp internal_key?(_), do: false + + defp simple_value?({:accessor, _, _}), do: false + defp simple_value?({:symbol, _, _}), do: false + defp simple_value?({:symbol, _}), do: false + defp simple_value?(_), do: true +end diff --git a/lib/quickbeam/vm/heap/store.ex b/lib/quickbeam/vm/heap/store.ex new file mode 100644 index 000000000..2303565f6 --- /dev/null +++ b/lib/quickbeam/vm/heap/store.ex @@ -0,0 +1,224 @@ +defmodule QuickBEAM.VM.Heap.Store do + @moduledoc "Low-level process-dictionary storage for JS heap objects: objects, arrays, cells, atoms, and GC roots." + + import QuickBEAM.VM.Heap.Keys + alias QuickBEAM.VM.Heap.{Arrays, Shapes} + + # ── Raw storage (bypasses shape→map reconstruction) ── + + @doc "Returns raw heap storage for an object reference without shape reconstruction." + def get_obj_raw(ref), do: Process.get(ref) + def put_obj_raw(ref, val), do: Process.put(ref, val) + + # ── Object access (map-compatible, reconstructs shapes) ── + + def get_obj(ref) do + case Process.get(ref) do + {:shape, shape_id, _offsets, vals, proto} -> Shapes.to_map(shape_id, vals, proto) + other -> other + end + end + + def get_obj(ref, default) do + case Process.get(ref, default) do + {:shape, shape_id, _offsets, vals, proto} -> Shapes.to_map(shape_id, vals, proto) + other -> other + end + end + + @doc "Helper for low-level process-dictionary storage for js heap objects: objects, arrays, cells, atoms, and gc roots." + def put_obj(ref, list) when is_list(list) do + Process.put(ref, {:qb_arr, :array.from_list(list, :undefined)}) + track_alloc() + end + + def put_obj(ref, val) do + Process.put(ref, val) + track_alloc() + end + + @doc "Writes one key into object storage while preserving shape metadata when possible." + def put_obj_key(ref, key, val), do: put_obj_key(ref, get_obj_raw(ref), key, val) + + def put_obj_key(ref, {:shape, shape_id, offsets, vals, proto}, key, val) do + case Map.fetch(offsets, key) do + {:ok, offset} -> + new_vals = Shapes.put_val(vals, offset, val) + Process.put(ref, {:shape, shape_id, offsets, new_vals, proto}) + + :error -> + {new_shape_id, new_offsets, offset} = Shapes.transition(shape_id, key) + new_vals = Shapes.put_val(vals, offset, val) + Process.put(ref, {:shape, new_shape_id, new_offsets, new_vals, proto}) + end + end + + def put_obj_key(ref, map, key, val) when is_map(map) do + new_map = + if not Map.has_key?(map, key) and (is_binary(key) or is_integer(key)) do + order = Map.get(map, key_order(), []) + Map.put(Map.put(map, key, val), key_order(), [key | order]) + else + Map.put(map, key, val) + end + + Process.put(ref, new_map) + end + + def put_obj_key(ref, _other, key, val) do + Process.put(ref, %{key => val}) + end + + @doc "Updates heap object data with a function after reconstructing shaped objects as maps." + def update_obj(ref, default, fun) do + current = Process.get(ref, default) + + current_map = + case current do + {:shape, shape_id, _offsets, vals, proto} -> Shapes.to_map(shape_id, vals, proto) + other -> other + end + + result = fun.(current_map) + Process.put(ref, result) + end + + # ── Array helpers ── + + @doc "Returns whether a heap object reference stores array data." + def obj_is_array?(ref) do + case Process.get(ref) do + {:qb_arr, _} -> true + _ -> false + end + end + + def obj_to_list(ref) do + case Process.get(ref) do + {:qb_arr, _} = arr -> Arrays.to_list(arr) + list when is_list(list) -> list + _ -> [] + end + end + + @doc "Reads an element from heap array storage by object reference." + def array_get(ref, idx) do + case Process.get(ref) do + {:qb_arr, _} = arr when idx >= 0 -> Arrays.get(arr, idx) + _ -> :undefined + end + end + + def array_size(ref) do + case Process.get(ref) do + {:qb_arr, arr} -> :array.size(arr) + list when is_list(list) -> length(list) + _ -> 0 + end + end + + @doc "Appends values to heap array storage and returns the new length." + def array_push(ref, values) do + case Process.get(ref) do + {:qb_arr, arr} -> + new_arr = + Enum.reduce(values, {:array.size(arr), arr}, fn value, {idx, array} -> + {idx + 1, :array.set(idx, value, array)} + end) + |> elem(1) + + Process.put(ref, {:qb_arr, new_arr}) + :array.size(new_arr) + + _ -> + 0 + end + end + + @doc "Writes an element in heap array storage by object reference." + def array_set(ref, idx, val) do + case Process.get(ref) do + {:qb_arr, arr} -> Process.put(ref, {:qb_arr, :array.set(idx, val, arr)}) + _ -> :ok + end + end + + # ── Closure cells ── + + @doc "Reads a closure/capture cell value." + def get_cell(ref), do: Process.get({:qb_cell, ref}, :undefined) + def put_cell(ref, val), do: Process.put({:qb_cell, ref}, val) + + # ── Class metadata ── + + def get_class_proto({:closure, _, raw} = ctor), + do: Process.get({:qb_class_proto, ctor}) || Process.get({:qb_class_proto, raw}) + + def get_class_proto(ctor), do: Process.get({:qb_class_proto, ctor}) + @doc "Stores the prototype object associated with a constructor." + def put_class_proto(ctor, proto), do: Process.put({:qb_class_proto, ctor}, proto) + + def get_parent_ctor({:closure, _, raw} = ctor), + do: Process.get({:qb_parent_ctor, ctor}) || Process.get({:qb_parent_ctor, raw}) + + def get_parent_ctor(ctor), do: Process.get({:qb_parent_ctor, ctor}) + def put_parent_ctor(ctor, parent), do: Process.put({:qb_parent_ctor, ctor}, parent) + def delete_parent_ctor(ctor), do: Process.delete({:qb_parent_ctor, ctor}) + + @doc "Returns static properties associated with a constructor value." + def get_ctor_statics(ctor), do: Process.get({:qb_ctor_statics, ctor}, %{}) + def put_ctor_statics(ctor, statics), do: Process.put({:qb_ctor_statics, ctor}, statics) + + def put_ctor_static({:closure, _, _} = ctor, "prototype", {:obj, _} = val) do + statics = get_ctor_statics(ctor) + put_ctor_statics(ctor, Map.put(statics, "prototype", val)) + Process.put({:qb_class_proto, ctor}, val) + end + + def put_ctor_static( + %{__struct__: QuickBEAM.VM.Bytecode.Function} = ctor, + "prototype", + {:obj, _} = val + ) do + statics = get_ctor_statics(ctor) + put_ctor_statics(ctor, Map.put(statics, "prototype", val)) + Process.put({:qb_class_proto, ctor}, val) + end + + def put_ctor_static(ctor, key, val) do + statics = get_ctor_statics(ctor) + put_ctor_statics(ctor, Map.put(statics, key, val)) + end + + @doc "Reads a process-local VM variable slot." + def get_var(name), do: Process.get({:qb_var, name}) + def put_var(name, val), do: Process.put({:qb_var, name}, val) + def delete_var(name), do: Process.delete({:qb_var, name}) + + def frozen?(ref) do + Process.get(:qb_has_frozen, false) and Process.get({:qb_frozen, ref}, false) + end + + @doc "Marks a heap object as frozen." + def freeze(ref) do + Process.put(:qb_has_frozen, true) + Process.put({:qb_frozen, ref}, true) + end + + def get_prop_desc(ref, key), do: Process.get({:qb_prop_desc, ref, key}) + def put_prop_desc(ref, key, desc), do: Process.put({:qb_prop_desc, ref, key}, desc) + + # ── Object ID allocation ── + + @doc "Allocates a new monotonically increasing heap object id." + def next_id, do: :erlang.unique_integer([:positive, :monotonic]) + + defp track_alloc do + count = Process.get(:qb_alloc_count, 0) + 1 + Process.put(:qb_alloc_count, count) + + if count >= Process.get(:qb_gc_threshold, QuickBEAM.VM.Heap.gc_initial_threshold()) do + Process.put(:qb_gc_needed, true) + end + end +end diff --git a/lib/quickbeam/vm/interpreter.ex b/lib/quickbeam/vm/interpreter.ex new file mode 100644 index 000000000..8620cbed0 --- /dev/null +++ b/lib/quickbeam/vm/interpreter.ex @@ -0,0 +1,1489 @@ +defmodule QuickBEAM.VM.Interpreter do + import Bitwise, only: [&&&: 2] + import QuickBEAM.VM.Builtin, only: [object: 1] + import QuickBEAM.VM.Heap.Keys + import QuickBEAM.VM.Value, only: [is_object: 1, is_closure: 1] + + alias QuickBEAM.VM.Execution.Trace + + alias QuickBEAM.VM.{ + Builtin, + Bytecode, + Decoder, + GlobalEnv, + Heap, + Invocation, + Names, + PredefinedAtoms, + Runtime, + Stacktrace + } + + alias QuickBEAM.JSError + alias QuickBEAM.VM.Invocation.Context, as: InvokeContext + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.ObjectModel.{Class, Copy, Delete, Functions, Get, Methods, Private, Put} + alias QuickBEAM.VM.PromiseState, as: Promise + + alias __MODULE__.{ + ClosureBuilder, + Closures, + Context, + EvalEnv, + Frame, + Gas, + Generator, + Setup, + Values + } + + require Frame + + @moduledoc """ + Executes decoded QuickJS bytecode via multi-clause function dispatch. + + The interpreter pre-decodes bytecode into instruction tuples for O(1) indexed + access, then runs a tail-recursive dispatch loop with one `defp run/5` clause + per opcode family. + + ## JS value representation + + - number: Elixir integer or float + - string: Elixir binary + - boolean: `true` / `false` + - null: `nil` + - undefined: `:undefined` + - object: `{:obj, reference()}` + - function: `%Bytecode.Function{}` | `{:closure, map(), %Bytecode.Function{}}` + - symbol: `{:symbol, desc}` | `{:symbol, desc, ref}` + - bigint: `{:bigint, integer()}` + """ + + @compile {:inline, + put_local: 3, list_iterator_next: 1, make_list_iterator: 1, check_prototype_chain: 2} + + for {num, {name, _, _, _, _}} <- QuickBEAM.VM.Opcodes.table() do + Module.put_attribute(__MODULE__, :"op_#{name}", num) + end + + @func_generator 1 + @func_async 2 + @func_async_generator 3 + @gc_check_interval 1000 + + defp check_gas(_pc, frame, stack, gas, ctx), + do: Gas.check(frame, stack, gas, ctx, @gc_check_interval) + + @spec eval(Bytecode.Function.t()) :: {:ok, term()} | {:error, term()} + @doc "Evaluates bytecode in the interpreter." + def eval(%Bytecode.Function{} = fun), do: eval(fun, [], %{}) + + @spec eval(Bytecode.Function.t(), [term()], map()) :: {:ok, term()} | {:error, term()} + def eval(%Bytecode.Function{} = fun, args, opts), do: eval(fun, args, opts, {}) + + @spec eval(Bytecode.Function.t(), [term()], map(), tuple()) :: {:ok, term()} | {:error, term()} + def eval(%Bytecode.Function{} = fun, args, opts, atoms) do + case eval_with_ctx(fun, args, opts, atoms) do + {:ok, value, _ctx} -> {:ok, value} + {:error, _} = err -> err + end + end + + defp eval_with_ctx(%Bytecode.Function{} = fun, args, opts, atoms) do + gas = Map.get(opts, :gas, Context.default_gas()) + + ctx = Setup.build_eval_context(opts, atoms, gas) + + Heap.put_atoms(atoms) + Setup.store_function_atoms(fun, atoms) + prev_ctx = Heap.get_ctx() + Heap.put_ctx(ctx) + + if Heap.get_builtin_names() == nil do + Heap.put_builtin_names(MapSet.new(Map.keys(Runtime.global_bindings()))) + end + + ctx = Context.mark_synced(ctx) + + try do + case Decoder.decode(fun.byte_code, fun.arg_count) do + {:ok, instructions} -> + instructions = List.to_tuple(instructions) + locals = :erlang.make_tuple(max(fun.arg_count + fun.var_count, 1), :undefined) + + {locals, var_refs_tuple, l2v} = + Closures.setup_captured_locals(fun, locals, [], args) + + frame = + Frame.new( + locals, + List.to_tuple(fun.constants), + var_refs_tuple, + fun.stack_size, + instructions, + l2v + ) + + if ctx.trace_enabled, do: Trace.push(fun) + + try do + result = run(0, frame, args, gas, ctx) + Promise.drain_microtasks() + {:ok, unwrap_promise(result), Heap.get_ctx()} + catch + {:js_throw, val} -> {:error, {:js_throw, val}} + {:error, _} = err -> err + after + if ctx.trace_enabled, do: Trace.pop() + end + + {:error, _} = err -> + err + end + after + if prev_ctx, do: Heap.put_ctx(prev_ctx), else: Heap.put_ctx(nil) + end + end + + @doc "Invoke a bytecode function or closure from external code." + def invoke(fun, args, gas), do: Invocation.invoke(fun, args, gas) + + @doc """ + Invokes a JS function with a specific `this` receiver. + """ + def invoke_with_receiver(fun, args, gas, this_obj), + do: Invocation.invoke_with_receiver(fun, args, gas, this_obj) + + def invoke_constructor(fun, args, gas, this_obj, new_target), + do: Invocation.invoke_constructor(fun, args, gas, this_obj, new_target) + + defp catch_and_dispatch(pc, frame, rest, gas, ctx, fun, refresh_globals?) do + Heap.put_ctx(ctx) + + call_result = + try do + {:ok, fun.()} + catch + {:js_throw, val} -> {:throw, val} + end + + if refresh_globals? do + persistent = Heap.get_persistent_globals() || %{} + refreshed_ctx = Context.mark_dirty(%{ctx | globals: Map.merge(ctx.globals, persistent)}) + + case call_result do + {:ok, result} -> run(pc + 1, frame, [result | rest], gas, refreshed_ctx) + {:throw, val} -> throw_or_catch(frame, val, gas, refreshed_ctx) + end + else + case call_result do + {:ok, result} -> run(pc + 1, frame, [result | rest], gas, ctx) + {:throw, val} -> throw_or_catch(frame, val, gas, ctx) + end + end + end + + # ── Helpers ── + + defp clean_eval_globals(pre_eval_globals) do + post = Heap.get_persistent_globals() || %{} + + cleaned = + Enum.reduce(post, post, fn {key, _val}, acc -> + case Map.fetch(pre_eval_globals, key) do + {:ok, old_val} -> Map.put(acc, key, old_val) + :error -> Map.delete(acc, key) + end + end) + + Heap.put_persistent_globals(cleaned) + end + + defp uninitialized_this_local?(ctx, idx), do: EvalEnv.current_local_name(ctx, idx) == "this" + + defp derived_this_uninitialized?(%Context{ + this: this, + current_func: {:closure, _, %Bytecode.Function{is_derived_class_constructor: true}} + }) + when this == :uninitialized or + (is_tuple(this) and tuple_size(this) == 2 and elem(this, 0) == :uninitialized), + do: true + + defp derived_this_uninitialized?(%Context{ + this: this, + current_func: %Bytecode.Function{is_derived_class_constructor: true} + }) + when this == :uninitialized or + (is_tuple(this) and tuple_size(this) == 2 and elem(this, 0) == :uninitialized), + do: true + + defp derived_this_uninitialized?(_), do: false + + defp current_var_ref_name( + %Context{current_func: {:closure, _, %Bytecode.Function{closure_vars: vars}}}, + idx + ) + when idx >= 0 and idx < length(vars), + do: vars |> Enum.at(idx) |> Map.get(:name) |> Names.resolve_display_name() + + defp current_var_ref_name(%Context{current_func: %Bytecode.Function{closure_vars: vars}}, idx) + when idx >= 0 and idx < length(vars), + do: vars |> Enum.at(idx) |> Map.get(:name) |> Names.resolve_display_name() + + defp current_var_ref_name(_, _), do: nil + + defp put_local(f, idx, val), + do: put_elem(f, Frame.locals(), put_elem(elem(f, Frame.locals()), idx, val)) + + defp trim_catch_stack(ctx, saved_stack) when is_list(saved_stack) do + if ctx.catch_stack === saved_stack do + ctx + else + Context.mark_dirty(%{ctx | catch_stack: saved_stack}) + end + end + + defp throw_or_catch(frame, error, gas, ctx) do + error = maybe_refresh_error_stack(error) + + case ctx.catch_stack do + [{target, saved_stack} | rest_catch] -> + run( + target, + frame, + [error | saved_stack], + gas, + Context.mark_dirty(%{ctx | catch_stack: rest_catch}) + ) + + [] -> + throw({:js_throw, error}) + end + end + + defp sync_global_this_write(ctx, obj, name, val) when is_binary(name) do + case Map.get(ctx.globals, "globalThis") do + ^obj -> + new_globals = Map.put(ctx.globals, name, val) + Heap.put_persistent_globals(new_globals) + Context.mark_dirty(%{ctx | globals: new_globals}) + + _ -> + ctx + end + end + + defp sync_global_this_write(ctx, _obj, _name, _val), do: ctx + + defp refresh_persistent_globals(ctx) do + case Heap.get_persistent_globals() do + nil -> ctx + p when map_size(p) == 0 -> ctx + p -> Context.mark_dirty(%{ctx | globals: Map.merge(ctx.globals, p)}) + end + end + + defp current_strict_mode?(%{ + current_func: {:closure, _, %Bytecode.Function{is_strict_mode: s}} + }), + do: s + + defp current_strict_mode?(%{current_func: %Bytecode.Function{is_strict_mode: s}}), do: s + defp current_strict_mode?(_), do: false + + defp maybe_refresh_error_stack({:obj, ref} = error) do + case Heap.get_obj(ref, %{}) do + %{"name" => _, "message" => _} -> Stacktrace.attach_stack(error) + _ -> error + end + end + + defp maybe_refresh_error_stack(error), do: error + + defp get_arg_value(%Context{arg_buf: arg_buf}, idx) do + if idx < tuple_size(arg_buf), do: elem(arg_buf, idx), else: :undefined + end + + defp throw_null_property_error(frame, obj, atom_idx, gas, ctx) do + prop = Names.resolve_atom(ctx, atom_idx) + nullish = if obj == nil, do: "null", else: "undefined" + + error = + Heap.make_error("Cannot read properties of #{nullish} (reading '#{prop}')", "TypeError") + + throw_or_catch(frame, error, gas, ctx) + end + + defp unwrap_promise(val, depth \\ 0) + + defp unwrap_promise({:obj, ref}, depth) when depth < 10 do + case Heap.get_obj(ref, %{}) do + %{ + promise_state() => :resolved, + promise_value() => val + } -> + unwrap_promise(val, depth + 1) + + _ -> + {:obj, ref} + end + end + + defp unwrap_promise(val, _depth), do: val + + @doc "Resolves an awaited value for async interpreter execution." + def resolve_awaited({:obj, ref} = obj) do + Promise.drain_microtasks() + + case Heap.get_obj(ref, %{}) do + %{ + promise_state() => :resolved, + promise_value() => val + } -> + val + + %{ + promise_state() => :rejected, + promise_value() => val + } -> + throw({:js_throw, val}) + + %{promise_state() => :pending} -> + # Drain timers, then microtasks, then recheck + drain_pending(ref, obj, 0) + + _ -> + obj + end + end + + def resolve_awaited(val), do: val + + @max_timer_drain_ms 5000 + + defp drain_pending(_ref, obj, elapsed_ms) when elapsed_ms > @max_timer_drain_ms, do: obj + + defp drain_pending(ref, obj, elapsed_ms) do + did_fire = QuickBEAM.VM.Runtime.Web.Timers.drain_timers() + QuickBEAM.VM.Runtime.Web.Worker.drain_all_worker_messages() + QuickBEAM.VM.Runtime.Web.EventSourceAPI.drain_all_event_sources() + Promise.drain_microtasks() + + case Heap.get_obj(ref, %{}) do + %{promise_state() => :resolved, promise_value() => val} -> + val + + %{promise_state() => :rejected, promise_value() => val} -> + throw({:js_throw, val}) + + %{promise_state() => :pending} -> + sleep_ms = + if did_fire do + 0 + else + QuickBEAM.VM.Runtime.Web.Timers.next_timer_delay_ms() || 1 + end + + if sleep_ms > 0, do: :timer.sleep(sleep_ms) + + drain_pending(ref, obj, elapsed_ms + sleep_ms) + + _ -> + obj + end + end + + defp list_iterator_next(pos_ref) do + case Heap.get_obj_raw(pos_ref) do + [head | tail] -> + Heap.put_obj_raw(pos_ref, tail) + Heap.wrap(%{"value" => head, "done" => false}) + + _ -> + Heap.wrap(%{"value" => :undefined, "done" => true}) + end + end + + defp array_proto_iterator(_obj) do + sym_iter = {:symbol, "Symbol.iterator"} + + case Heap.get_array_proto() do + {:obj, proto_ref} -> + proto_data = Heap.get_obj(proto_ref, %{}) + + case is_map(proto_data) && Map.get(proto_data, sym_iter) do + nil -> :deleted + false -> :deleted + :deleted -> :deleted + {:builtin, "[Symbol.iterator]", _} -> :default + other -> other + end + + _ -> + :default + end + end + + defp invoke_custom_iterator(iter_fn, obj) do + iter_obj = Invocation.invoke_with_receiver(iter_fn, [], Runtime.gas_budget(), obj) + + unless is_object(iter_obj) do + throw( + {:js_throw, + Heap.make_error("Result of the Symbol.iterator method is not an object", "TypeError")} + ) + end + + {iter_obj, Get.get(iter_obj, "next")} + end + + defp make_list_iterator(items) do + pos_ref = make_ref() + Heap.put_obj_raw(pos_ref, items) + next_fn = {:builtin, "next", fn _, _ -> list_iterator_next(pos_ref) end} + {object(do: prop("next", next_fn)), next_fn} + end + + defp eval_code(code, caller_frame, gas, ctx, var_objs, keep_declared?) do + with {:ok, bc} <- QuickBEAM.Runtime.compile(ctx.runtime_pid, code), + {:ok, parsed} <- Bytecode.decode(bc) do + declared_names = eval_declared_names(parsed.value, parsed.atoms) + eval_globals = collect_caller_locals(caller_frame, ctx) + captured_globals = collect_captured_globals(ctx.current_func) + + eval_scope_globals = + merge_var_object_globals(Map.merge(eval_globals, captured_globals), var_objs) + + base_globals = + if keep_declared?, + do: Map.drop(ctx.globals, MapSet.to_list(declared_names)), + else: ctx.globals + + scoped_globals = + if keep_declared?, + do: Map.drop(eval_scope_globals, MapSet.to_list(declared_names)), + else: eval_scope_globals + + eval_ctx_globals = + base_globals + |> Map.merge(scoped_globals) + |> Map.put("arguments", Heap.wrap(Tuple.to_list(ctx.arg_buf))) + + visible_declared_names = + base_globals + |> Map.merge(eval_scope_globals) + |> Map.put("arguments", :present) + |> Map.keys() + |> Enum.filter(&is_binary/1) + |> MapSet.new() + |> MapSet.intersection(declared_names) + + eval_opts = %{ + gas: gas, + runtime_pid: ctx.runtime_pid, + globals: eval_ctx_globals, + this: ctx.this, + arg_buf: ctx.arg_buf, + current_func: ctx.current_func, + new_target: ctx.new_target + } + + pre_eval_globals = Heap.get_persistent_globals() || %{} + + case eval_with_ctx(parsed.value, [], eval_opts, parsed.atoms) do + {:ok, val, final_ctx} -> + post_eval_globals = Heap.get_persistent_globals() || %{} + + transient_globals = + post_eval_globals + |> Map.merge(Map.get(final_ctx || %{}, :globals, %{})) + |> Map.take(MapSet.to_list(visible_declared_names)) + + apply_eval_transients(ctx.current_func, var_objs, transient_globals, keep_declared?) + write_back_eval_vars(caller_frame, ctx, pre_eval_globals, var_objs, declared_names) + + clean_eval_globals(pre_eval_globals) + {val, transient_globals} + + {:error, {:js_throw, val}} -> + write_back_eval_vars(caller_frame, ctx, pre_eval_globals, var_objs, declared_names) + + clean_eval_globals(pre_eval_globals) + throw({:js_throw, val}) + + _ -> + {:undefined, %{}} + end + else + {:error, msg} when is_binary(msg) -> + JSThrow.syntax_error!(msg) + + {:error, %JSError{name: name, message: msg}} -> + throw({:js_throw, Heap.make_error(msg, name)}) + + _ -> + {:undefined, %{}} + end + end + + defp merge_var_object_globals(globals, []), do: globals + + defp merge_var_object_globals(globals, var_objs) do + Enum.reduce(var_objs, globals, fn + {:obj, ref}, acc -> + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> Map.merge(acc, map) + _ -> acc + end + + _, acc -> + acc + end) + end + + defp captured_var_objects({:closure, captured, _}) do + captured + |> Map.values() + |> Enum.flat_map(fn + {:cell, ref} -> + case Heap.get_cell(ref) do + {:obj, _} = obj -> [obj] + _ -> [] + end + + _ -> + [] + end) + end + + defp captured_var_objects(_), do: [] + + defp collect_captured_globals({:closure, captured, %Bytecode.Function{closure_vars: cvs}}) do + Enum.reduce(cvs, %{}, fn cv, acc -> + case Names.resolve_display_name(cv.name) do + name when is_binary(name) -> + val = + case Map.get(captured, ClosureBuilder.capture_key(cv), :undefined) do + {:cell, ref} -> Heap.get_cell(ref) + other -> other + end + + Map.put(acc, name, val) + + _ -> + acc + end + end) + end + + defp collect_captured_globals(_), do: %{} + + defp write_back_eval_vars(caller_frame, ctx, original_globals, var_objs, declared_names) do + new_globals = Heap.get_persistent_globals() || %{} + + if current_strict_mode?(ctx) do + func_name = EvalEnv.current_func_name(ctx) + + if func_name && Map.has_key?(new_globals, func_name) do + old_val = + case ctx.current_func do + {:closure, _, %Bytecode.Function{} = f} -> Heap.get_parent_ctor(f) + _ -> nil + end + + new_val = Map.get(new_globals, func_name) + + if old_val == nil and new_val != ctx.current_func and new_val != :undefined do + JSThrow.type_error!("Assignment to constant variable.") + end + end + end + + vrefs = elem(caller_frame, Frame.var_refs()) + l2v = elem(caller_frame, Frame.l2v()) + + case ctx.current_func do + {:closure, _, %Bytecode.Function{locals: local_defs}} -> + do_write_back(local_defs, vrefs, l2v, new_globals, ctx, original_globals, declared_names) + + %Bytecode.Function{locals: local_defs} -> + do_write_back(local_defs, vrefs, l2v, new_globals, ctx, original_globals, declared_names) + + _ -> + :ok + end + + if is_closure(ctx.current_func) do + write_back_captured_vars(ctx.current_func, new_globals, original_globals, declared_names) + end + + if var_objs != [] do + for {name, val} <- new_globals, + is_binary(name), + Map.has_key?(original_globals, name), + Map.get(original_globals, name) != val do + for var_obj <- var_objs, do: Put.put(var_obj, name, val) + end + end + end + + defp apply_eval_transients(current_func, var_objs, transient_globals, keep_declared?) do + if transient_globals != %{} do + if var_objs != [] do + for {name, val} <- transient_globals, var_obj <- var_objs do + Put.put(var_obj, name, val) + end + end + + if keep_declared? do + apply_transient_captured_vars( + current_func, + transient_globals, + MapSet.new(Map.keys(transient_globals)) + ) + end + end + end + + defp write_back_captured_vars( + {:closure, captured, %Bytecode.Function{closure_vars: cvs}}, + new_globals, + original_globals, + declared_names + ) do + for cv <- cvs, + name = Names.resolve_display_name(cv.name), + is_binary(name), + not MapSet.member?(declared_names, name), + Map.has_key?(new_globals, name), + Map.get(original_globals, name) != Map.get(new_globals, name) do + case Map.get(captured, ClosureBuilder.capture_key(cv)) do + {:cell, ref} -> Heap.put_cell(ref, Map.get(new_globals, name)) + _ -> :ok + end + end + end + + defp write_back_captured_vars(_, _, _, _), do: :ok + + defp apply_transient_captured_vars( + {:closure, captured, %Bytecode.Function{closure_vars: cvs}}, + new_globals, + declared_names + ) do + for cv <- cvs, + name = Names.resolve_display_name(cv.name), + is_binary(name), + MapSet.member?(declared_names, name), + Map.has_key?(new_globals, name) do + case Map.get(captured, ClosureBuilder.capture_key(cv)) do + {:cell, ref} -> + old_val = Heap.get_cell(ref) + Heap.put_eval_restore_stack([{ref, old_val} | Heap.get_eval_restore_stack()]) + Heap.put_cell(ref, Map.get(new_globals, name)) + + _ -> + :ok + end + end + end + + defp apply_transient_captured_vars(_, _, _), do: :ok + + defp restore_eval_restores(mark) do + restores = Heap.get_eval_restore_stack() + {to_restore, keep} = Enum.split(restores, length(restores) - mark) + + Enum.each(to_restore, fn {ref, old_val} -> + Heap.put_cell(ref, old_val) + end) + + Heap.put_eval_restore_stack(keep) + end + + defp eval_declared_names(%Bytecode.Function{} = fun, atoms) do + local_names = + fun.locals + |> Enum.map(&Names.resolve_display_name(&1.name)) + |> Enum.filter(&is_binary/1) + + instruction_names = + case Decoder.decode(fun.byte_code, fun.arg_count) do + {:ok, insns} -> + insns + |> Enum.reduce([], fn + {op, [atom_ref, _scope]}, acc when op in [@op_define_var, @op_check_define_var] -> + case resolve_declared_atom(atom_ref, atoms) do + name when is_binary(name) -> [name | acc] + _ -> acc + end + + {op, [atom_ref, _flags]}, acc when op == @op_define_func -> + case resolve_declared_atom(atom_ref, atoms) do + name when is_binary(name) -> [name | acc] + _ -> acc + end + + _, acc -> + acc + end) + + _ -> + [] + end + + MapSet.new(local_names ++ instruction_names) + end + + defp eval_declared_names(_, _), do: MapSet.new() + + defp resolve_declared_atom({:predefined, idx}, _atoms), + do: PredefinedAtoms.lookup(idx) + + defp resolve_declared_atom(idx, atoms) + when is_integer(idx) and idx >= 0 and idx < tuple_size(atoms), do: elem(atoms, idx) + + defp resolve_declared_atom(name, _atoms) when is_binary(name), do: name + defp resolve_declared_atom(_, _atoms), do: nil + + defp do_write_back(local_defs, vrefs, l2v, new_globals, ctx, original_globals, declared_names) do + func_name = EvalEnv.current_func_name(ctx) + + for {vd, idx} <- Enum.with_index(local_defs), + name = Names.resolve_display_name(vd.name), + is_binary(name), + not MapSet.member?(declared_names, name), + name != func_name, + Map.has_key?(new_globals, name), + new_val = Map.get(new_globals, name), + Map.get(original_globals, name) != new_val do + case Map.get(l2v, idx) do + nil -> + :ok + + vref_idx when vref_idx < tuple_size(vrefs) -> + case elem(vrefs, vref_idx) do + {:cell, ref} -> Closures.write_cell({:cell, ref}, new_val) + _ -> :ok + end + + _ -> + :ok + end + end + end + + defp collect_caller_locals(frame, ctx) do + locals = elem(frame, Frame.locals()) + + case ctx.current_func do + {:closure, _, %Bytecode.Function{locals: local_defs, arg_count: ac}} -> + build_local_map(local_defs, ac, locals, ctx) + + %Bytecode.Function{locals: local_defs, arg_count: ac} -> + build_local_map(local_defs, ac, locals, ctx) + + _ -> + %{} + end + end + + defp build_local_map(local_defs, arg_count, locals, ctx) do + arg_buf = ctx.arg_buf + + local_defs + |> Enum.with_index() + |> Enum.reduce(%{}, fn {vd, idx}, acc -> + with name when is_binary(name) <- vd.name, + val when val != :undefined <- local_value(idx, arg_count, arg_buf, locals) do + Map.put(acc, name, val) + else + _ -> acc + end + end) + end + + defp local_value(idx, _arg_count, arg_buf, _locals) when idx < tuple_size(arg_buf) do + elem(arg_buf, idx) + end + + defp local_value(idx, _arg_count, _arg_buf, locals) do + if idx < tuple_size(locals), do: elem(locals, idx), else: :undefined + end + + defp collect_iterator(iter_obj, acc) do + next_fn = Get.get(iter_obj, "next") + + case Runtime.call_callback(next_fn, []) do + {:obj, _} = result_obj -> + done = Get.get(result_obj, "done") + + if done == true do + Enum.reverse(acc) + else + val = Get.get(result_obj, "value") + collect_iterator(iter_obj, [val | acc]) + end + + _ -> + Enum.reverse(acc) + end + end + + defp materialize_constant({:template_object, elems, raw}) when is_list(elems) do + raw_list = + case raw do + {:array, l} when is_list(l) -> l + l when is_list(l) -> l + :undefined -> elems + _ -> elems + end + + raw_ref = make_ref() + + raw_map = + raw_list + |> Enum.with_index() + |> Enum.reduce(%{"length" => length(raw_list)}, fn {v, i}, acc -> + Map.put(acc, Integer.to_string(i), v) + end) + + Heap.put_obj(raw_ref, raw_map) + + ref = make_ref() + + map = + elems + |> Enum.with_index() + |> Enum.reduce(%{"length" => length(elems), "raw" => {:obj, raw_ref}}, fn {v, i}, acc -> + Map.put(acc, Integer.to_string(i), v) + end) + + Heap.put_obj(ref, map) + {:obj, ref} + end + + defp materialize_constant({:template_object, {:array, elems}, raw}) do + materialize_constant({:template_object, elems, raw}) + end + + defp materialize_constant({:template_object, elems, raw}) when not is_list(elems) do + materialize_constant({:template_object, [elems], raw}) + end + + defp materialize_constant(val), do: val + + defp function_value?({:closure, _, _}), do: true + defp function_value?(%Bytecode.Function{}), do: true + defp function_value?({:builtin, _, _}), do: true + defp function_value?({:bound, _, _, _, _}), do: true + defp function_value?(_), do: false + + @dialyzer {:nowarn_function, check_prototype_chain: 2} + defp check_prototype_chain(_, :undefined), do: false + defp check_prototype_chain(_, nil), do: false + + defp check_prototype_chain({:obj, ref}, target) do + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> + case Map.get(map, proto()) do + ^target -> true + nil -> false + :undefined -> false + proto -> check_prototype_chain(proto, target) + end + + data when is_list(data) -> + array_proto_matches?(target) + + {:qb_arr, _} -> + array_proto_matches?(target) + + _ -> + false + end + end + + defp check_prototype_chain(_, _), do: false + + defp array_proto_matches?(target) do + case Heap.get_ctx() do + %{globals: globals} -> + array_ctor = Map.get(globals, "Array") + + if array_ctor do + array_proto = Get.get(array_ctor, "prototype") + + if array_proto == target do + true + else + object_ctor = Map.get(globals, "Object") + + if object_ctor do + Get.get(object_ctor, "prototype") == target + else + false + end + end + else + false + end + + _ -> + false + end + end + + defp with_has_property?({:obj, _} = obj, key) do + if Put.has_property(obj, key) do + unscopables = Get.get(obj, {:symbol, "Symbol.unscopables"}) + + case unscopables do + {:obj, _} -> not Values.truthy?(Get.get(unscopables, key)) + _ -> true + end + else + false + end + end + + defp with_has_property?(_, _), do: false + + defp delete_static(fun, key) do + key_str = if is_binary(key), do: key, else: Values.stringify(key) + statics = Heap.get_ctor_statics(fun) + + if Map.has_key?(statics, key_str) do + Heap.put_ctor_statics(fun, Map.delete(statics, key_str)) + true + else + case fun do + {:builtin, _, _} -> + val = Get.get(fun, key_str) + + cond do + val == :undefined -> + true + + is_number(val) or val == :infinity or val == :neg_infinity or val == :nan -> + false + + true -> + Heap.put_ctor_statics(fun, Map.put(statics, key_str, :deleted)) + true + end + + _ -> + true + end + end + end + + defp ensure_initialized_local!(ctx, idx, val) do + if val == :__tdz__ or + (val == :undefined and uninitialized_this_local?(ctx, idx) and + derived_this_uninitialized?(ctx)) do + message = + if uninitialized_this_local?(ctx, idx) and derived_this_uninitialized?(ctx), + do: "this is not initialized", + else: "Cannot access variable before initialization" + + JSThrow.reference_error!(message) + end + end + + defp eval_scope_var_objects(frame, ctx, enabled?, scope_idx) do + if enabled? do + locals = elem(frame, Frame.locals()) + + obj_locals = + for i <- 0..(tuple_size(locals) - 1), + obj = elem(locals, i), + is_object(obj), + do: obj + + obj_locals = if scope_idx == 0, do: Enum.take(obj_locals, 1), else: obj_locals + Enum.uniq(obj_locals ++ captured_var_objects(ctx.current_func)) + else + [] + end + end + + defp run_eval_or_call(pc, frame, rest, gas, ctx, fun, args, scope_idx, var_objs) do + case eval_or_call( + fun, + Builtin.arg(args, 0, :undefined), + args, + scope_idx, + frame, + gas, + ctx, + var_objs + ) do + {:ok, {result, new_ctx}} -> run(pc + 1, frame, [result | rest], gas, new_ctx) + {:error, error} -> throw_or_catch(frame, error, gas, ctx) + end + end + + defp eval_or_call(fun, code, args, scope_idx, frame, gas, ctx, var_objs) do + try do + {:ok, eval_or_call_result(fun, code, args, scope_idx, frame, gas, ctx, var_objs)} + catch + {:js_throw, error} -> {:error, error} + end + end + + defp eval_or_call_result(fun, code, args, scope_idx, frame, gas, ctx, var_objs) do + cond do + fun == ctx.globals["eval"] and is_binary(code) and ctx.runtime_pid != nil -> + keep_declared? = scope_idx > 0 + {value, transient_globals} = eval_code(code, frame, gas, ctx, var_objs, keep_declared?) + {value, Context.mark_dirty(%{ctx | globals: Map.merge(ctx.globals, transient_globals)})} + + callable?(fun) -> + persistent = Heap.get_persistent_globals() || %{} + + {dispatch_call(fun, args, gas, ctx, :undefined), + Context.mark_dirty(%{ctx | globals: Map.merge(ctx.globals, persistent)})} + + true -> + {:undefined, ctx} + end + end + + defp callable?(fun) do + is_function(fun) or match?({:fn, _, _}, fun) or match?({:bound, _, _}, fun) or + match?(%Bytecode.Function{}, fun) or match?({:closure, _, %Bytecode.Function{}}, fun) + end + + defp run_arg_update(pc, frame, stack, gas, %Context{arg_buf: arg_buf} = ctx, idx, val) do + locals = elem(frame, Frame.locals()) + + frame = + if idx < tuple_size(locals) do + Closures.write_captured_local( + elem(frame, Frame.l2v()), + idx, + val, + locals, + elem(frame, Frame.var_refs()) + ) + + put_local(frame, idx, val) + else + frame + end + + ctx = put_arg_value(ctx, idx, val, arg_buf) + run(pc + 1, frame, stack, gas, ctx) + end + + # ── Main dispatch loop ── + + defp run(pc, frame, stack, gas, %Context{pd_synced: true} = ctx) do + if ctx.trace_enabled, do: Trace.update_pc(pc) + run(elem(elem(frame, Frame.insns()), pc), pc, frame, stack, gas, ctx) + end + + defp run(pc, frame, stack, gas, %Context{pd_synced: false} = ctx) do + Heap.put_ctx(ctx) + ctx = Context.mark_synced(ctx) + + if ctx.trace_enabled, do: Trace.update_pc(pc) + run(elem(elem(frame, Frame.insns()), pc), pc, frame, stack, gas, ctx) + end + + defp run(pc, frame, stack, gas, ctx) do + Heap.put_ctx(ctx) + if Map.get(ctx, :trace_enabled, false), do: Trace.update_pc(pc) + run(elem(elem(frame, Frame.insns()), pc), pc, frame, stack, gas, ctx) + end + + use QuickBEAM.VM.Interpreter.Ops.Stack + + use QuickBEAM.VM.Interpreter.Ops.Locals + + use QuickBEAM.VM.Interpreter.Ops.Control + + use QuickBEAM.VM.Interpreter.Ops.Arithmetic + + use QuickBEAM.VM.Interpreter.Ops.Calls + + use QuickBEAM.VM.Interpreter.Ops.Objects + + use QuickBEAM.VM.Interpreter.Ops.Globals + + use QuickBEAM.VM.Interpreter.Ops.Iterators + + use QuickBEAM.VM.Interpreter.Ops.Generators + + use QuickBEAM.VM.Interpreter.Ops.Classes + + # ── Catch-all for unimplemented opcodes ── + + defp run({op, args}, _pc, _frame, _stack, _gas, _ctx) do + throw({:error, {:unimplemented_opcode, op, args}}) + end + + defp for_of_start_iter(obj) do + case obj do + list when is_list(list) -> + make_list_iterator(list) + + {:obj, ref} -> + stored = Heap.get_obj(ref) + + case stored do + {:qb_arr, arr} -> + case array_proto_iterator(obj) do + :default -> + make_list_iterator(:array.to_list(arr)) + + :deleted -> + throw( + {:js_throw, Heap.make_error("[Symbol.iterator] is not a function", "TypeError")} + ) + + custom_fn -> + invoke_custom_iterator(custom_fn, obj) + end + + list when is_list(list) -> + case array_proto_iterator(obj) do + :default -> + make_list_iterator(list) + + :deleted -> + throw( + {:js_throw, Heap.make_error("[Symbol.iterator] is not a function", "TypeError")} + ) + + custom_fn -> + invoke_custom_iterator(custom_fn, obj) + end + + map when is_map(map) -> + sym_iter = {:symbol, "Symbol.iterator"} + + cond do + Map.has_key?(map, sym_iter) -> + raw_iter = Map.get(map, sym_iter) + + iter_fn = + case raw_iter do + {:accessor, getter, _} when getter != nil -> Get.call_getter(getter, obj) + _ -> raw_iter + end + + iter_obj = + Invocation.invoke_with_receiver(iter_fn, [], Runtime.gas_budget(), obj) + + unless is_object(iter_obj) do + throw( + {:js_throw, + Heap.make_error( + "Result of the Symbol.iterator method is not an object", + "TypeError" + )} + ) + end + + {iter_obj, Get.get(iter_obj, "next")} + + Map.has_key?(map, "next") -> + {obj, Get.get(obj, "next")} + + true -> + make_list_iterator([]) + end + + _ -> + make_list_iterator([]) + end + + s when is_binary(s) -> + make_list_iterator(String.codepoints(s)) + + nil -> + throw( + {:js_throw, + Heap.make_error( + "Cannot read properties of null (reading 'Symbol(Symbol.iterator)')", + "TypeError" + )} + ) + + :undefined -> + throw( + {:js_throw, + Heap.make_error( + "Cannot read properties of undefined (reading 'Symbol(Symbol.iterator)')", + "TypeError" + )} + ) + + other -> + throw( + {:js_throw, Heap.make_error("#{Values.stringify(other)} is not iterable", "TypeError")} + ) + end + end + + defp apply_args(arg_array) do + case arg_array do + {:qb_arr, arr} -> :array.to_list(arr) + list when is_list(list) -> list + {:obj, ref} -> Heap.to_list({:obj, ref}) + _ -> [] + end + end + + defp invoke_super_constructor(fun, new_target, args, gas, ctx) do + pending_this = pending_constructor_this(ctx.this) + + ctor_ctx = + Context.mark_dirty(%{ + ctx + | this: super_constructor_this(fun, pending_this), + new_target: new_target + }) + + result = + case fun do + %Bytecode.Function{} = f -> + do_invoke(f, {:closure, %{}, f}, args, ClosureBuilder.ctor_var_refs(f), gas, ctor_ctx) + + {:closure, captured, %Bytecode.Function{} = f} -> + do_invoke( + f, + {:closure, captured, f}, + args, + ClosureBuilder.ctor_var_refs(f, captured), + gas, + ctor_ctx + ) + + {:bound, _, _, orig_fun, bound_args} -> + invoke_super_constructor(orig_fun, new_target, bound_args ++ args, gas, ctx) + + {:builtin, _name, cb} when is_function(cb, 2) -> + cb.(args, pending_this) + + _ -> + pending_this + end + + result = Class.coalesce_this_result(result, ctor_ctx.this) + + case result do + {:uninitialized, _} -> + JSThrow.reference_error!("this is not initialized") + + other -> + other + end + end + + defp pending_constructor_this({:uninitialized, {:obj, _} = obj}), do: obj + defp pending_constructor_this({:obj, _} = obj), do: obj + defp pending_constructor_this(other), do: other + + defp super_constructor_this(fun, pending_this) do + case unwrap_constructor_target(fun) do + %Bytecode.Function{is_derived_class_constructor: true} -> {:uninitialized, pending_this} + _ -> pending_this + end + end + + defp unwrap_constructor_target({:closure, _, %Bytecode.Function{} = f}), do: f + defp unwrap_constructor_target({:bound, _, inner, _, _}), do: unwrap_constructor_target(inner) + defp unwrap_constructor_target(other), do: other + + defp put_arg_value(ctx, idx, val, arg_buf) do + padded = Tuple.to_list(arg_buf) + + padded = + if idx < length(padded), + do: padded, + else: padded ++ List.duplicate(:undefined, idx + 1 - length(padded)) + + Context.mark_dirty(%{ctx | arg_buf: List.to_tuple(List.replace_at(padded, idx, val))}) + end + + defp dispatch_call(fun, args, gas, ctx, this), + do: Invocation.dispatch(fun, args, gas, ctx, this) + + # ── Tail calls ── + + defp tail_call(stack, argc, gas, ctx) do + {args, [fun | _]} = Enum.split(stack, argc) + dispatch_call(fun, Enum.reverse(args), gas, ctx, nil) + end + + defp tail_call_method(stack, argc, gas, ctx) do + {args, [fun, obj | _]} = Enum.split(stack, argc) + dispatch_call(fun, Enum.reverse(args), gas, Context.mark_dirty(%{ctx | this: obj}), obj) + end + + # ── Closure construction ── + + defp build_closure(fun, locals, vrefs, l2v, ctx), + do: ClosureBuilder.build(fun, locals, vrefs, l2v, ctx) + + defp inherit_parent_vrefs(closure, parent_vrefs), + do: ClosureBuilder.inherit_parent_vrefs(closure, parent_vrefs) + + # ── Function calls ── + + defp call_function(pc, frame, stack, argc, gas, ctx) do + {args, [fun | rest]} = Enum.split(stack, argc) + gas = check_gas(pc, frame, rest, gas, ctx) + + catch_and_dispatch( + pc, + frame, + rest, + gas, + ctx, + fn -> + dispatch_call(fun, Enum.reverse(args), gas, ctx, nil) + end, + true + ) + end + + defp call_method(pc, frame, stack, argc, gas, ctx) do + {args, [fun, obj | rest]} = Enum.split(stack, argc) + gas = check_gas(pc, frame, rest, gas, ctx) + method_ctx = Context.mark_dirty(%{ctx | this: obj}) + + catch_and_dispatch( + pc, + frame, + rest, + gas, + ctx, + fn -> + dispatch_call(fun, Enum.reverse(args), gas, method_ctx, obj) + end, + true + ) + end + + @doc "Invokes a bytecode function through the interpreter fallback path." + def invoke_function_fallback(%Bytecode.Function{} = fun, args, gas, ctx) do + invoke_function(fun, args, gas, ctx) + end + + def invoke_function_fallback(other, args, _gas, _ctx) + when not is_tuple(other) or elem(other, 0) != :bound, + do: Builtin.call(other, args, nil) + + def invoke_function_fallback({:bound, _, inner, _, _}, args, gas, _ctx), + do: Invocation.invoke(inner, args, gas) + + @doc "Invokes a closure through the interpreter fallback path." + def invoke_closure_fallback({:closure, _, %Bytecode.Function{}} = closure, args, gas, ctx) do + invoke_closure(closure, args, gas, ctx) + end + + def invoke_closure_fallback(other, args, gas, ctx), + do: invoke_function_fallback(other, args, gas, ctx) + + defp invoke_function(%Bytecode.Function{} = fun, args, gas, ctx) do + do_invoke(fun, {:closure, %{}, fun}, args, [], gas, ctx) + end + + defp invoke_closure({:closure, captured, %Bytecode.Function{} = fun} = self, args, gas, ctx) do + var_refs = + for cv <- fun.closure_vars do + Map.get(captured, ClosureBuilder.capture_key(cv), :undefined) + end + + do_invoke(fun, self, args, var_refs, gas, ctx) + end + + defp do_invoke(%Bytecode.Function{} = fun, self_ref, args, var_refs, gas, ctx) do + Heap.put_ctx(ctx) + cache_key = {fun.byte_code, fun.arg_count} + + insns = + case Heap.get_decoded(cache_key) do + nil -> + case Decoder.decode(fun.byte_code, fun.arg_count) do + {:ok, instructions} -> + t = List.to_tuple(instructions) + Heap.put_decoded(cache_key, t) + t + + {:error, _} = err -> + throw(err) + end + + cached -> + cached + end + + case insns do + insns when is_tuple(insns) -> + locals = :erlang.make_tuple(max(fun.arg_count + fun.var_count, 1), :undefined) + + {locals, var_refs_tuple, l2v} = + Closures.setup_captured_locals(fun, locals, var_refs, args) + + frame = + Frame.new( + locals, + List.to_tuple(fun.constants), + var_refs_tuple, + fun.stack_size, + insns, + l2v + ) + + fn_atoms = Heap.get_fn_atoms(fun.byte_code, Heap.get_atoms()) + Heap.put_atoms(fn_atoms) + + inner_ctx = + %{ + ctx + | current_func: self_ref, + arg_buf: List.to_tuple(args), + catch_stack: [], + atoms: fn_atoms + } + |> InvokeContext.attach_method_state() + + prev_ctx = Heap.get_ctx() + Heap.put_ctx(inner_ctx) + inner_ctx = Context.mark_synced(inner_ctx) + + if inner_ctx.trace_enabled, do: Trace.push(self_ref) + restore_mark = length(Heap.get_eval_restore_stack()) + + try do + case fun.func_kind do + @func_generator -> Generator.invoke(frame, gas, inner_ctx) + @func_async -> Generator.invoke_async(frame, gas, inner_ctx) + @func_async_generator -> Generator.invoke_async_generator(frame, gas, inner_ctx) + _ -> run(0, frame, [], gas, inner_ctx) + end + after + restore_eval_restores(restore_mark) + if inner_ctx.trace_enabled, do: Trace.pop() + if prev_ctx, do: Heap.put_ctx(prev_ctx) + end + end + end + + @doc """ + Runs a bytecode frame — entry point for external callers. + """ + def run_frame(frame, stack, gas, ctx), do: run(0, frame, stack, gas, ctx) + def run_frame(pc, frame, stack, gas, ctx), do: run(pc, frame, stack, gas, ctx) + + @doc """ + Invokes a callback function from built-in code (e.g. Array.prototype.map). + """ + def invoke_callback(fun, args), do: Invocation.invoke_callback(fun, args) +end diff --git a/lib/quickbeam/vm/interpreter/closure_builder.ex b/lib/quickbeam/vm/interpreter/closure_builder.ex new file mode 100644 index 000000000..adf3f0b5e --- /dev/null +++ b/lib/quickbeam/vm/interpreter/closure_builder.ex @@ -0,0 +1,108 @@ +defmodule QuickBEAM.VM.Interpreter.ClosureBuilder do + @moduledoc "Closure construction: captures parent locals and var-refs into a `{:closure, captured, fun}` tuple." + + alias QuickBEAM.VM.{Bytecode, Heap} + alias QuickBEAM.VM.Interpreter.Context + + @doc "Builds the runtime value represented by this module." + def build(%Bytecode.Function{} = fun, locals, vrefs, l2v, %Context{} = ctx) do + parent_arg_count = current_function_arg_count(ctx) + + captured = + for cv <- fun.closure_vars, into: %{} do + {capture_key(cv), capture_var(cv, locals, vrefs, l2v, parent_arg_count)} + end + + {:closure, captured, fun} + end + + def build(other, _locals, _vrefs, _l2v, _ctx), do: other + + @doc "Helper for closure construction: captures parent locals and var-refs into a `{:closure, captured, fun}` tuple." + def inherit_parent_vrefs({:closure, captured, %Bytecode.Function{} = fun}, parent_vrefs) + when is_tuple(parent_vrefs) do + extra = + if tuple_size(parent_vrefs) == 0 do + %{} + else + for i <- 0..(tuple_size(parent_vrefs) - 1), + not Map.has_key?(captured, capture_key(2, i)), + into: %{} do + {capture_key(2, i), elem(parent_vrefs, i)} + end + end + + {:closure, Map.merge(extra, captured), fun} + end + + def inherit_parent_vrefs(closure, _parent_vrefs), do: closure + + @doc "Helper for closure construction: captures parent locals and var-refs into a `{:closure, captured, fun}` tuple." + def ctor_var_refs(%Bytecode.Function{} = fun, captured \\ %{}) do + cell_ref = make_ref() + Heap.put_cell(cell_ref, false) + + case fun.closure_vars do + [] -> + [{:cell, cell_ref}] + + closure_vars -> + Enum.map(closure_vars, &Map.get(captured, capture_key(&1), {:cell, cell_ref})) + end + end + + @doc "Helper for closure construction: captures parent locals and var-refs into a `{:closure, captured, fun}` tuple." + def capture_key(%{closure_type: type, var_idx: idx}), do: capture_key(type, idx) + def capture_key(type, idx), do: {type, idx} + + defp capture_var(%{closure_type: 2, var_idx: idx}, _locals, vrefs, _l2v, _arg_count) + when idx < tuple_size(vrefs) do + case elem(vrefs, idx) do + {:cell, _} = existing -> + existing + + val -> + ref = make_ref() + Heap.put_cell(ref, val) + {:cell, ref} + end + end + + defp capture_var(%{closure_type: 0, var_idx: idx}, locals, vrefs, l2v, arg_count) do + capture_local_var(idx + arg_count, locals, vrefs, l2v) + end + + defp capture_var(%{var_idx: idx}, locals, vrefs, l2v, _arg_count) do + capture_local_var(idx, locals, vrefs, l2v) + end + + defp capture_local_var(idx, locals, vrefs, l2v) do + case Map.get(l2v, idx) do + nil -> + val = if idx < tuple_size(locals), do: elem(locals, idx), else: :undefined + ref = make_ref() + Heap.put_cell(ref, val) + {:cell, ref} + + vref_idx -> + case elem(vrefs, vref_idx) do + {:cell, _} = existing -> + existing + + _ -> + val = elem(locals, idx) + ref = make_ref() + Heap.put_cell(ref, val) + {:cell, ref} + end + end + end + + defp current_function_arg_count(%Context{ + current_func: {:closure, _, %Bytecode.Function{arg_count: n}} + }), + do: n + + defp current_function_arg_count(%Context{current_func: %Bytecode.Function{arg_count: n}}), do: n + defp current_function_arg_count(%Context{arg_buf: arg_buf}), do: tuple_size(arg_buf) +end diff --git a/lib/quickbeam/vm/interpreter/closures.ex b/lib/quickbeam/vm/interpreter/closures.ex new file mode 100644 index 000000000..538fe0127 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/closures.ex @@ -0,0 +1,100 @@ +defmodule QuickBEAM.VM.Interpreter.Closures do + @moduledoc "Closure variable access: read and write shared capture cells and captured locals." + @compile {:inline, read_cell: 1, write_cell: 2, read_captured_local: 4, write_captured_local: 5} + + alias QuickBEAM.VM.Heap + + @doc "Reads a captured closure cell." + def read_cell({:cell, ref}), do: Heap.get_cell(ref) + def read_cell(_), do: :undefined + + @doc "Writes a captured closure cell." + def write_cell({:cell, ref}, val), do: Heap.put_cell(ref, val) + def write_cell(_, _), do: :ok + + @doc "Reads a captured local variable value." + def read_captured_local(l2v, idx, locals, var_refs) do + case Map.get(l2v, idx) do + nil -> + elem(locals, idx) + + vref_idx -> + case elem(var_refs, vref_idx) do + {:cell, ref} -> Heap.get_cell(ref) + val -> val + end + end + end + + @doc "Writes a captured local variable value." + def write_captured_local(l2v, idx, val, _locals, var_refs) do + case Map.get(l2v, idx) do + nil -> + :ok + + vref_idx -> + case elem(var_refs, vref_idx) do + {:cell, ref} -> Heap.put_cell(ref, val) + _ -> :ok + end + end + end + + @doc "Initializes captured locals for closure execution." + def setup_captured_locals(%{locals: []}, locals, var_refs, _args) do + vrefs = if is_tuple(var_refs), do: var_refs, else: List.to_tuple(var_refs) + {locals, vrefs, %{}} + end + + def setup_captured_locals(fun, locals, var_refs, args) do + arg_buf = List.to_tuple(args) + vrefs = if is_tuple(var_refs), do: var_refs, else: List.to_tuple(var_refs) + + setup_captured_locals(fun.locals, 0, locals, vrefs, tuple_size(vrefs), arg_buf, %{}) + end + + defp setup_captured_locals([], _idx, locals, vrefs, _closure_ref_count, _arg_buf, l2v), + do: {locals, vrefs, l2v} + + defp setup_captured_locals( + [%{is_captured: true, var_ref_idx: var_ref_idx} | rest], + idx, + locals, + vrefs, + closure_ref_count, + arg_buf, + l2v + ) do + val = + if idx < tuple_size(arg_buf), + do: elem(arg_buf, idx), + else: elem(locals, idx) + + ref = make_ref() + Heap.put_cell(ref, val) + local_ref_idx = closure_ref_count + var_ref_idx + + setup_captured_locals( + rest, + idx + 1, + put_elem(locals, idx, val), + put_vref(vrefs, local_ref_idx, {:cell, ref}), + closure_ref_count, + arg_buf, + Map.put(l2v, idx, local_ref_idx) + ) + end + + defp setup_captured_locals([_ | rest], idx, locals, vrefs, closure_ref_count, arg_buf, l2v), + do: setup_captured_locals(rest, idx + 1, locals, vrefs, closure_ref_count, arg_buf, l2v) + + defp put_vref(vrefs, idx, val) when idx < tuple_size(vrefs), do: put_elem(vrefs, idx, val) + + defp put_vref(vrefs, idx, val) do + vrefs + |> Tuple.to_list() + |> Kernel.++(List.duplicate(:undefined, idx + 1 - tuple_size(vrefs))) + |> List.replace_at(idx, val) + |> List.to_tuple() + end +end diff --git a/lib/quickbeam/vm/interpreter/context.ex b/lib/quickbeam/vm/interpreter/context.ex new file mode 100644 index 000000000..3853660a8 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/context.ex @@ -0,0 +1,44 @@ +defmodule QuickBEAM.VM.Interpreter.Context do + @moduledoc "Execution context carried through interpreter evaluation and builtin invocation." + @type t :: %__MODULE__{ + this: term(), + arg_buf: tuple(), + current_func: term(), + home_object: term(), + super: term(), + catch_stack: [{non_neg_integer(), [term()]}], + atoms: tuple(), + globals: map(), + runtime_pid: pid() | nil, + new_target: term(), + gas: pos_integer(), + trace_enabled: boolean(), + pd_synced: boolean() + } + + @default_gas 1_000_000_000 + + @doc "Returns the default gas budget for interpreter execution." + def default_gas, do: @default_gas + + defstruct this: :undefined, + arg_buf: {}, + current_func: :undefined, + home_object: :undefined, + super: :undefined, + catch_stack: [], + atoms: {}, + globals: %{}, + runtime_pid: nil, + new_target: :undefined, + gas: @default_gas, + trace_enabled: false, + pd_synced: false + + @doc "Marks a context as needing synchronization with process-local fast context state." + def mark_dirty(%__MODULE__{} = ctx), do: %{ctx | pd_synced: false} + @doc "Marks a context as synchronized with process-local fast context state." + def mark_synced(%__MODULE__{} = ctx), do: %{ctx | pd_synced: true} + @doc "Returns whether a context is synchronized with process-local fast context state." + def synced?(%__MODULE__{pd_synced: synced?}), do: synced? +end diff --git a/lib/quickbeam/vm/interpreter/eval_env.ex b/lib/quickbeam/vm/interpreter/eval_env.ex new file mode 100644 index 000000000..12d6198c4 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/eval_env.ex @@ -0,0 +1,85 @@ +defmodule QuickBEAM.VM.Interpreter.EvalEnv do + @moduledoc "Eval-time environment utilities: local name resolution, class binding seeding, and `this` context helpers." + + alias QuickBEAM.VM.{Bytecode, Names} + alias QuickBEAM.VM.Interpreter.{Closures, Context, Frame} + + require Frame + + @doc "Helper for eval-time environment utilities: local name resolution, class binding seeding, and `this` context helpers." + def resolve_local_name(name), do: Names.resolve_display_name(name) + + @doc "Helper for eval-time environment utilities: local name resolution, class binding seeding, and `this` context helpers." + def seed_class_binding(frame, ctx, atom_idx, ctor_closure) do + case class_binding_local_index(ctx, atom_idx) do + nil -> + frame + + idx -> + Closures.write_captured_local( + elem(frame, Frame.l2v()), + idx, + ctor_closure, + elem(frame, Frame.locals()), + elem(frame, Frame.var_refs()) + ) + + put_local(frame, idx, ctor_closure) + end + end + + @doc "Returns the active func name for eval-time environment utilities: local name resolution, class binding seeding, and `this` context helpers." + def current_func_name(%Context{current_func: func}) do + case func do + {:closure, _, %Bytecode.Function{name: name}} -> name + %Bytecode.Function{name: name} -> name + _ -> nil + end + end + + @doc "Returns the active local name for eval-time environment utilities: local name resolution, class binding seeding, and `this` context helpers." + def current_local_name( + %Context{current_func: {:closure, _, %Bytecode.Function{locals: locals}}}, + idx + ) + when idx >= 0 and idx < length(locals), + do: locals |> Enum.at(idx) |> Map.get(:name) |> resolve_local_name() + + def current_local_name(%Context{current_func: %Bytecode.Function{locals: locals}}, idx) + when idx >= 0 and idx < length(locals), + do: locals |> Enum.at(idx) |> Map.get(:name) |> resolve_local_name() + + def current_local_name(_, _), do: nil + + defp class_binding_local_index(%Context{current_func: current_func}, atom_idx) do + class_name = resolve_local_name(atom_idx) + + current_func + |> current_bytecode_function() + |> case do + %Bytecode.Function{locals: locals} -> + locals + |> Enum.with_index() + |> Enum.filter(fn {%{name: name, scope_level: scope_level, is_lexical: is_lexical}, _idx} -> + is_lexical and scope_level > 1 and resolve_local_name(name) == class_name + end) + |> Enum.max_by(fn {%{scope_level: scope_level}, _idx} -> scope_level end, fn -> nil end) + |> case do + nil -> nil + {_local, idx} -> idx + end + + _ -> + nil + end + end + + defp class_binding_local_index(_, _), do: nil + + defp current_bytecode_function({:closure, _, %Bytecode.Function{} = fun}), do: fun + defp current_bytecode_function(%Bytecode.Function{} = fun), do: fun + defp current_bytecode_function(_), do: nil + + defp put_local(frame, idx, val), + do: put_elem(frame, Frame.locals(), put_elem(elem(frame, Frame.locals()), idx, val)) +end diff --git a/lib/quickbeam/vm/interpreter/frame.ex b/lib/quickbeam/vm/interpreter/frame.ex new file mode 100644 index 000000000..710d9764e --- /dev/null +++ b/lib/quickbeam/vm/interpreter/frame.ex @@ -0,0 +1,27 @@ +defmodule QuickBEAM.VM.Interpreter.Frame do + @moduledoc "Tuple-backed interpreter frame layout helpers." + @type t :: {tuple(), tuple(), tuple(), non_neg_integer(), tuple(), map()} + + # Tuple layout: {locals, constants, var_refs, _stack_size (unused), instructions, local_to_vref} + @locals 0 + @constants 1 + @var_refs 2 + @insns 4 + @l2v 5 + + @doc "Tuple index for the frame local-slot tuple." + defmacro locals, do: @locals + @doc "Tuple index for the frame constant pool." + defmacro constants, do: @constants + @doc "Tuple index for captured variable references." + defmacro var_refs, do: @var_refs + @doc "Tuple index for decoded instructions." + defmacro insns, do: @insns + @doc "Tuple index for the local-to-var-ref mapping." + defmacro l2v, do: @l2v + + @doc "Builds an interpreter frame tuple." + def new(locals, constants, var_refs, stack_size, instructions, local_to_vref) do + {locals, constants, var_refs, stack_size, instructions, local_to_vref} + end +end diff --git a/lib/quickbeam/vm/interpreter/gas.ex b/lib/quickbeam/vm/interpreter/gas.ex new file mode 100644 index 000000000..cc7afc32a --- /dev/null +++ b/lib/quickbeam/vm/interpreter/gas.ex @@ -0,0 +1,36 @@ +defmodule QuickBEAM.VM.Interpreter.Gas do + @moduledoc "Interpreter gas accounting and periodic heap garbage-collection trigger." + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Interpreter.Frame + + require Frame + + @doc "Consumes one gas unit and periodically runs garbage collection with interpreter roots." + def check(frame, stack, gas, ctx, interval) do + gas = gas - 1 + + if gas <= 0 do + throw({:error, {:out_of_gas, gas}}) + end + + if rem(gas, interval) == 0 and Heap.gc_needed?() do + roots = + [ + elem(frame, Frame.locals()), + elem(frame, Frame.var_refs()), + elem(frame, Frame.constants()), + ctx.this, + ctx.current_func, + ctx.arg_buf, + ctx.catch_stack, + ctx.globals + | stack + ] ++ Heap.all_module_exports() + + Heap.mark_and_sweep(roots) + end + + gas + end +end diff --git a/lib/quickbeam/vm/interpreter/generator.ex b/lib/quickbeam/vm/interpreter/generator.ex new file mode 100644 index 000000000..94c3beb3e --- /dev/null +++ b/lib/quickbeam/vm/interpreter/generator.ex @@ -0,0 +1,154 @@ +defmodule QuickBEAM.VM.Interpreter.Generator do + @moduledoc "Generator and async function execution: suspends/resumes frames and wraps results in iterator or Promise objects." + + import QuickBEAM.VM.Builtin, only: [object: 1] + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Interpreter + alias QuickBEAM.VM.PromiseState, as: Promise + + @doc "Invokes the runtime object represented by this module." + def invoke(frame, gas, ctx) do + gen_ref = make_ref() + suspend(gen_ref, frame, gas, ctx) + build_iterator(gen_ref, &next/2, &return_value/2) + end + + @doc "Invokes the runtime object asynchronously." + def invoke_async(frame, gas, ctx) do + result = Interpreter.run_frame(frame, [], gas, ctx) + Promise.resolved(result) + catch + {:generator_return, val} -> Promise.resolved(val) + {:js_throw, val} -> Promise.rejected(val) + end + + @doc "Invokes an async generator runtime object." + def invoke_async_generator(frame, gas, ctx) do + gen_ref = make_ref() + suspend(gen_ref, frame, gas, ctx) + + build_iterator(gen_ref, &async_next/2, fn _ref, val -> + Promise.resolved(done_result(val)) + end) + end + + # ── Sync generator ── + + defp next(gen_ref, arg) do + case Heap.get_obj(gen_ref) do + %{state: :suspended} = s -> + Heap.put_ctx(s.ctx) + resume_sync(gen_ref, s, arg) + + _ -> + done_result(:undefined) + end + end + + defp resume_sync(gen_ref, s, arg) do + result = Interpreter.run_frame(s.pc, s.frame, [false, arg | s.stack], s.gas, s.ctx) + complete(gen_ref) + done_result(result) + catch + {:generator_yield, val, sp, sf, ss, sg, sc} -> + save_suspended(gen_ref, sp, sf, ss, sg, sc) + yield_result(val) + + {:generator_yield_star, val, sp, sf, ss, sg, sc} -> + save_suspended(gen_ref, sp, sf, ss, sg, sc) + val + + {:generator_return, val} -> + complete(gen_ref) + done_result(val) + + {:js_throw, _} = thrown -> + complete(gen_ref) + throw(thrown) + end + + # ── Async generator ── + + defp async_next(gen_ref, arg) do + case Heap.get_obj(gen_ref) do + %{state: :suspended} = s -> + prev_ctx = Heap.get_ctx() + Heap.put_ctx(s.ctx) + + try do + resume_async(gen_ref, s, arg) + after + if prev_ctx, do: Heap.put_ctx(prev_ctx) + end + + _ -> + Promise.resolved(done_result(:undefined)) + end + end + + defp resume_async(gen_ref, s, arg) do + result = Interpreter.run_frame(s.pc, s.frame, [false, arg | s.stack], s.gas, s.ctx) + complete(gen_ref) + Promise.resolved(done_result(result)) + catch + {:generator_yield, val, sp, sf, ss, sg, sc} -> + save_suspended(gen_ref, sp, sf, ss, sg, sc) + Promise.resolved(yield_result(val)) + + {:generator_return, val} -> + complete(gen_ref) + Promise.resolved(done_result(val)) + + {:js_throw, _} = thrown -> + complete(gen_ref) + throw(thrown) + end + + # ── Shared helpers ── + + defp return_value(gen_ref, val) do + complete(gen_ref) + done_result(val) + end + + defp suspend(gen_ref, frame, gas, ctx) do + Interpreter.run_frame(frame, [], gas, ctx) + catch + {:generator_yield, _val, sp, sf, ss, sg, sc} -> + save_suspended(gen_ref, sp, sf, ss, sg, sc) + + {:generator_yield_star, _val, sp, sf, ss, sg, sc} -> + save_suspended(gen_ref, sp, sf, ss, sg, sc) + end + + defp save_suspended(ref, pc, frame, stack, gas, ctx) do + Heap.put_obj(ref, %{state: :suspended, pc: pc, frame: frame, stack: stack, gas: gas, ctx: ctx}) + end + + defp complete(ref), do: Heap.put_obj(ref, %{state: :completed}) + + defp yield_result(val), do: Heap.wrap(%{"value" => val, "done" => false}) + defp done_result(val), do: Heap.wrap(%{"value" => val, "done" => true}) + + defp build_iterator(gen_ref, next_impl, return_impl) do + next_fn = + {:builtin, "next", + fn + [arg | _], _this -> next_impl.(gen_ref, arg) + [], _this -> next_impl.(gen_ref, :undefined) + end} + + return_fn = + {:builtin, "return", + fn + [val | _], _this -> return_impl.(gen_ref, val) + [], _this -> return_impl.(gen_ref, :undefined) + end} + + object do + prop("next", next_fn) + prop("return", return_fn) + end + end +end diff --git a/lib/quickbeam/vm/interpreter/ops/arithmetic.ex b/lib/quickbeam/vm/interpreter/ops/arithmetic.ex new file mode 100644 index 000000000..2757fe63d --- /dev/null +++ b/lib/quickbeam/vm/interpreter/ops/arithmetic.ex @@ -0,0 +1,170 @@ +defmodule QuickBEAM.VM.Interpreter.Ops.Arithmetic do + @moduledoc "Arithmetic, bitwise, comparison, and unary opcodes." + + @doc "Installs the Arithmetic, bitwise, comparison, and unary opcodes helpers into the caller module." + defmacro __using__(_opts) do + quote location: :keep do + alias QuickBEAM.VM.Interpreter.{Closures, Frame, Values} + + # ── Arithmetic ── + + defp run({@op_add, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.add(a, b) end, true) + + defp run({@op_sub, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.sub(a, b) end, true) + + defp run({@op_mul, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.mul(a, b) end, true) + + defp run({@op_div, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.js_div(a, b) end, true) + + defp run({@op_mod, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.mod(a, b) end, true) + + defp run({@op_pow, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.pow(a, b) end, true) + + # ── Bitwise ── + + defp run({@op_band, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.band(a, b) end, true) + + defp run({@op_bor, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.bor(a, b) end, true) + + defp run({@op_bxor, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.bxor(a, b) end, true) + + defp run({@op_shl, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.shl(a, b) end, true) + + defp run({@op_sar, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.sar(a, b) end, true) + + defp run({@op_shr, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.shr(a, b) end, true) + + # ── Comparison ── + + defp run({@op_lt, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.lt(a, b) end, true) + + defp run({@op_lte, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.lte(a, b) end, true) + + defp run({@op_gt, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.gt(a, b) end, true) + + defp run({@op_gte, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.gte(a, b) end, true) + + defp run({@op_eq, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.eq(a, b) end, true) + + defp run({@op_neq, []}, pc, frame, [b, a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.neq(a, b) end, true) + + defp run({@op_strict_eq, []}, pc, frame, [b, a | rest], gas, ctx), + do: run(pc + 1, frame, [Values.strict_eq(a, b) | rest], gas, ctx) + + defp run({@op_strict_neq, []}, pc, frame, [b, a | rest], gas, ctx), + do: run(pc + 1, frame, [not Values.strict_eq(a, b) | rest], gas, ctx) + + # ── Unary ── + + defp run({@op_neg, []}, pc, frame, [a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.neg(a) end, true) + + defp run({@op_plus, []}, pc, frame, [a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.to_number(a) end, true) + + defp run({@op_inc, []}, pc, frame, [{:bigint, n} | rest], gas, ctx), + do: run(pc + 1, frame, [{:bigint, n + 1} | rest], gas, ctx) + + defp run({@op_inc, []}, pc, frame, [a | rest], gas, ctx) when is_number(a), + do: run(pc + 1, frame, [a + 1 | rest], gas, ctx) + + defp run({@op_inc, []}, pc, frame, [a | rest], gas, ctx), + do: run(pc + 1, frame, [Values.add(Values.to_number(a), 1) | rest], gas, ctx) + + defp run({@op_dec, []}, pc, frame, [{:bigint, n} | rest], gas, ctx), + do: run(pc + 1, frame, [{:bigint, n - 1} | rest], gas, ctx) + + defp run({@op_dec, []}, pc, frame, [a | rest], gas, ctx) when is_number(a), + do: run(pc + 1, frame, [a - 1 | rest], gas, ctx) + + defp run({@op_dec, []}, pc, frame, [a | rest], gas, ctx), + do: run(pc + 1, frame, [Values.sub(Values.to_number(a), 1) | rest], gas, ctx) + + defp run({@op_post_inc, []}, pc, frame, [{:bigint, n} = val | rest], gas, ctx), + do: run(pc + 1, frame, [{:bigint, n + 1}, val | rest], gas, ctx) + + defp run({@op_post_inc, []}, pc, frame, [a | rest], gas, ctx) do + num = Values.to_number(a) + run(pc + 1, frame, [Values.add(num, 1), num | rest], gas, ctx) + end + + defp run({@op_post_dec, []}, pc, frame, [{:bigint, n} = val | rest], gas, ctx), + do: run(pc + 1, frame, [{:bigint, n - 1}, val | rest], gas, ctx) + + defp run({@op_post_dec, []}, pc, frame, [a | rest], gas, ctx) do + num = Values.to_number(a) + run(pc + 1, frame, [Values.sub(num, 1), num | rest], gas, ctx) + end + + defp run({@op_inc_loc, [idx]}, pc, frame, stack, gas, ctx) do + locals = elem(frame, Frame.locals()) + vrefs = elem(frame, Frame.var_refs()) + l2v = elem(frame, Frame.l2v()) + old = elem(locals, idx) + + new_val = + case old do + {:bigint, n} -> {:bigint, n + 1} + n when is_number(n) -> n + 1 + _ -> Values.add(Values.to_number(old), 1) + end + + Closures.write_captured_local(l2v, idx, new_val, locals, vrefs) + run(pc + 1, put_local(frame, idx, new_val), stack, gas, ctx) + end + + defp run({@op_dec_loc, [idx]}, pc, frame, stack, gas, ctx) do + locals = elem(frame, Frame.locals()) + vrefs = elem(frame, Frame.var_refs()) + l2v = elem(frame, Frame.l2v()) + old = elem(locals, idx) + + new_val = + case old do + {:bigint, n} -> {:bigint, n - 1} + n when is_number(n) -> n - 1 + _ -> Values.sub(Values.to_number(old), 1) + end + + Closures.write_captured_local(l2v, idx, new_val, locals, vrefs) + run(pc + 1, put_local(frame, idx, new_val), stack, gas, ctx) + end + + defp run({@op_add_loc, [idx]}, pc, frame, [val | rest], gas, ctx) do + locals = elem(frame, Frame.locals()) + vrefs = elem(frame, Frame.var_refs()) + l2v = elem(frame, Frame.l2v()) + new_val = Values.add(elem(locals, idx), val) + Closures.write_captured_local(l2v, idx, new_val, locals, vrefs) + run(pc + 1, put_local(frame, idx, new_val), rest, gas, ctx) + end + + defp run({@op_not, []}, pc, frame, [a | rest], gas, ctx), + do: catch_and_dispatch(pc, frame, rest, gas, ctx, fn -> Values.bnot(a) end, true) + + defp run({@op_lnot, []}, pc, frame, [a | rest], gas, ctx), + do: run(pc + 1, frame, [not Values.truthy?(a) | rest], gas, ctx) + + defp run({@op_typeof, []}, pc, frame, [a | rest], gas, ctx), + do: run(pc + 1, frame, [Values.typeof(a) | rest], gas, ctx) + end + end +end diff --git a/lib/quickbeam/vm/interpreter/ops/calls.ex b/lib/quickbeam/vm/interpreter/ops/calls.ex new file mode 100644 index 000000000..0469e35a4 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/ops/calls.ex @@ -0,0 +1,341 @@ +defmodule QuickBEAM.VM.Interpreter.Ops.Calls do + @moduledoc "Function creation, call, and constructor opcodes." + + @doc "Installs the Function creation, call, and constructor opcodes helpers into the caller module." + defmacro __using__(_opts) do + quote location: :keep do + alias QuickBEAM.VM.{Bytecode, Heap, Names} + alias QuickBEAM.VM.Interpreter.{ClosureBuilder, Context, Frame, Values} + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.ObjectModel.{Class, Get} + + # ── Function creation / calls ── + + defp run({op, [idx]}, pc, frame, stack, gas, ctx) + when op in [@op_fclosure, @op_fclosure8] do + fun = Names.resolve_const(elem(frame, Frame.constants()), idx) + vrefs = elem(frame, Frame.var_refs()) + + closure = + build_closure( + fun, + elem(frame, Frame.locals()), + vrefs, + elem(frame, Frame.l2v()), + ctx + ) + + run(pc + 1, frame, [closure | stack], gas, ctx) + end + + defp run({op, [argc]}, pc, frame, stack, gas, ctx) + when op in [@op_call, @op_call0, @op_call1, @op_call2, @op_call3], + do: call_function(pc, frame, stack, argc, gas, ctx) + + defp run({@op_tail_call, [argc]}, _pc, _frame, stack, gas, ctx), + do: tail_call(stack, argc, gas, ctx) + + defp run({@op_call_method, [argc]}, pc, frame, stack, gas, ctx), + do: call_method(pc, frame, stack, argc, gas, ctx) + + defp run({@op_tail_call_method, [argc]}, _pc, _frame, stack, gas, ctx), + do: tail_call_method(stack, argc, gas, ctx) + + # ── new / constructor ── + + defp run({@op_call_constructor, [argc]}, pc, frame, stack, gas, ctx) do + {args, [new_target, ctor | rest]} = Enum.split(stack, argc) + + gas = check_gas(pc, frame, rest, gas, ctx) + + catch_and_dispatch( + pc, + frame, + rest, + gas, + ctx, + fn -> + rev_args = Enum.reverse(args) + + raw_ctor = + case ctor do + {:closure, _, %Bytecode.Function{} = f} -> + f + + {:bound, _, inner, _, _} -> + inner + + %Bytecode.Function{} = f -> + f + + {:builtin, _, cb} when is_function(cb) -> + ctor + + {:builtin, _, map} when is_map(map) -> + throw( + {:js_throw, + Heap.make_error( + "#{Values.stringify(ctor)} is not a constructor", + "TypeError" + )} + ) + + _ -> + throw( + {:js_throw, + Heap.make_error( + "#{Values.stringify(ctor)} is not a constructor", + "TypeError" + )} + ) + end + + case raw_ctor do + %Bytecode.Function{func_kind: fk} + when fk in [@func_generator, @func_async_generator] -> + name = raw_ctor.name || "anonymous" + JSThrow.type_error!("#{name} is not a constructor") + + _ -> + :ok + end + + this_ref = make_ref() + + raw_new_target = + case new_target do + {:closure, _, %Bytecode.Function{} = f} -> f + %Bytecode.Function{} = f -> f + _ -> nil + end + + proto = + if raw_new_target != nil and raw_new_target != raw_ctor do + Heap.get_class_proto(raw_new_target) || Heap.get_class_proto(raw_ctor) || + Heap.get_or_create_prototype(ctor) + else + Heap.get_class_proto(raw_ctor) || Heap.get_or_create_prototype(ctor) + end + + init = if proto, do: %{proto() => proto}, else: %{} + Heap.put_obj(this_ref, init) + fresh_this = {:obj, this_ref} + + this_obj = + case raw_ctor do + %Bytecode.Function{is_derived_class_constructor: true} -> + {:uninitialized, fresh_this} + + _ -> + fresh_this + end + + ctor_ctx = Context.mark_dirty(%{ctx | this: this_obj, new_target: new_target}) + + result = + case ctor do + %Bytecode.Function{} = f -> + do_invoke( + f, + {:closure, %{}, f}, + rev_args, + ClosureBuilder.ctor_var_refs(f), + gas, + ctor_ctx + ) + + {:closure, captured, %Bytecode.Function{} = f} -> + do_invoke( + f, + {:closure, captured, f}, + rev_args, + ClosureBuilder.ctor_var_refs(f, captured), + gas, + ctor_ctx + ) + + {:bound, _, _, orig_fun, bound_args} -> + all_args = bound_args ++ rev_args + + case orig_fun do + %Bytecode.Function{} = f -> + do_invoke( + f, + {:closure, %{}, f}, + all_args, + ClosureBuilder.ctor_var_refs(f), + gas, + ctor_ctx + ) + + {:closure, captured, %Bytecode.Function{} = f} -> + do_invoke( + f, + {:closure, captured, f}, + all_args, + ClosureBuilder.ctor_var_refs(f, captured), + gas, + ctor_ctx + ) + + {:builtin, _, cb} when is_function(cb, 2) -> + cb.(all_args, this_obj) + + _ -> + this_obj + end + + {:builtin, name, cb} when is_function(cb, 2) -> + obj = cb.(rev_args, this_obj) + + if name in ~w(Number String Boolean) do + existing = Heap.get_obj(this_ref, %{}) + val_fn = {:builtin, "valueOf", fn _, _ -> obj end} + + to_str_fn = + {:builtin, "toString", fn _, _ -> Values.stringify(obj) end} + + Heap.put_obj( + this_ref, + existing + |> Map.merge(%{"valueOf" => val_fn, "toString" => to_str_fn}) + |> Map.put(primitive_value(), obj) + ) + end + + if name in ~w(Error TypeError RangeError SyntaxError ReferenceError URIError EvalError) do + case obj do + {:obj, ref} -> + existing = Heap.get_obj(ref, %{}) + + if is_map(existing) and not Map.has_key?(existing, "name") do + Heap.put_obj(ref, Map.put(existing, "name", name)) + end + + _ -> + :ok + end + end + + obj + + _ -> + this_obj + end + + result = Class.coalesce_this_result(result, this_obj) + + if match?({:uninitialized, _}, result) do + JSThrow.reference_error!("this is not initialized") + end + + case {result, Heap.get_class_proto(raw_ctor)} do + {{:obj, rref}, {:obj, _} = proto2} -> + rmap = Heap.get_obj(rref, %{}) + + unless Map.has_key?(rmap, proto()) do + Heap.put_obj(rref, Map.put(rmap, proto(), proto2)) + end + + _ -> + :ok + end + + result + end, + true + ) + end + + defp run({@op_init_ctor, []}, pc, frame, stack, gas, %Context{arg_buf: arg_buf} = ctx) do + raw = + case ctx.current_func do + {:closure, _, %Bytecode.Function{} = f} -> f + %Bytecode.Function{} = f -> f + other -> other + end + + parent = Heap.get_parent_ctor(raw) + args = Tuple.to_list(arg_buf) + + pending_this = + case ctx.this do + {:uninitialized, {:obj, _} = obj} -> obj + {:obj, _} = obj -> obj + _ -> ctx.this + end + + parent_ctx = Context.mark_dirty(%{ctx | this: pending_this}) + + result = + case parent do + nil -> + pending_this + + %Bytecode.Function{} = f -> + do_invoke( + f, + {:closure, %{}, f}, + args, + ClosureBuilder.ctor_var_refs(f), + gas, + parent_ctx + ) + + {:closure, captured, %Bytecode.Function{} = f} -> + do_invoke( + f, + {:closure, captured, f}, + args, + ClosureBuilder.ctor_var_refs(f, captured), + gas, + parent_ctx + ) + + {:builtin, _name, cb} when is_function(cb, 2) -> + cb.(args, pending_this) + + _ -> + pending_this + end + + result = + case result do + {:obj, _} = obj -> obj + _ -> pending_this + end + + run(pc + 1, frame, [result | stack], gas, Context.mark_dirty(%{ctx | this: result})) + end + + # ── Spread/rest via apply ── + + defp run({@op_apply, [1]}, pc, frame, [arg_array, new_target, fun | rest], gas, ctx) do + result = invoke_super_constructor(fun, new_target, apply_args(arg_array), gas, ctx) + persistent = Heap.get_persistent_globals() || %{} + + refreshed = + Context.mark_dirty(%{ctx | globals: Map.merge(ctx.globals, persistent), this: result}) + + run(pc + 1, frame, [result | rest], gas, refreshed) + end + + defp run({@op_apply, [_magic]}, pc, frame, [arg_array, this_obj, fun | rest], gas, ctx) do + args = apply_args(arg_array) + apply_ctx = Context.mark_dirty(%{ctx | this: this_obj}) + + catch_and_dispatch( + pc, + frame, + rest, + gas, + ctx, + fn -> + dispatch_call(fun, args, gas, apply_ctx, this_obj) + end, + true + ) + end + end + end +end diff --git a/lib/quickbeam/vm/interpreter/ops/classes.ex b/lib/quickbeam/vm/interpreter/ops/classes.ex new file mode 100644 index 000000000..ba899940b --- /dev/null +++ b/lib/quickbeam/vm/interpreter/ops/classes.ex @@ -0,0 +1,98 @@ +defmodule QuickBEAM.VM.Interpreter.Ops.Classes do + @moduledoc "Class definition, method definition, brand, and private field opcodes." + + @doc "Installs the Class definition, method definition, brand, and private field opcodes helpers into the caller module." + defmacro __using__(_opts) do + quote location: :keep do + alias QuickBEAM.VM.{Bytecode, Heap, Names} + alias QuickBEAM.VM.Interpreter.{Context, EvalEnv, Frame} + alias QuickBEAM.VM.ObjectModel.{Class, Methods, Private} + + # ── Class definitions ── + + defp run( + {@op_define_class, [atom_idx, _flags]}, + pc, + frame, + [ctor, parent_ctor | rest], + gas, + ctx + ) do + locals = elem(frame, Frame.locals()) + vrefs = elem(frame, Frame.var_refs()) + l2v = elem(frame, Frame.l2v()) + + ctor_closure = + case ctor do + %Bytecode.Function{} = f -> + base = build_closure(f, locals, vrefs, l2v, ctx) + inherit_parent_vrefs(base, vrefs) + + already_closure -> + already_closure + end + + class_name = Names.resolve_atom(ctx, atom_idx) + {proto, ctor_closure} = Class.define_class(ctor_closure, parent_ctor, class_name) + + frame = EvalEnv.seed_class_binding(frame, ctx, atom_idx, ctor_closure) + + run(pc + 1, frame, [proto, ctor_closure | rest], gas, ctx) + end + + defp run({@op_add_brand, []}, pc, frame, [obj, brand | rest], gas, ctx) do + Private.add_brand(obj, brand) + run(pc + 1, frame, rest, gas, ctx) + end + + defp run({@op_check_brand, []}, pc, frame, [brand, obj | _] = stack, gas, ctx) do + case Private.ensure_brand(obj, brand) do + :ok -> run(pc + 1, frame, stack, gas, ctx) + :error -> throw_or_catch(frame, Private.brand_error(), gas, ctx) + end + end + + defp run( + {@op_define_class_computed, [atom_idx, flags]}, + pc, + frame, + [ctor, parent_ctor, _computed_name | rest], + gas, + ctx + ) do + run( + {@op_define_class, [atom_idx, flags]}, + pc, + frame, + [ctor, parent_ctor | rest], + gas, + ctx + ) + end + + defp run( + {@op_define_method, [atom_idx, flags]}, + pc, + frame, + [method_closure, target | rest], + gas, + ctx + ) do + Methods.define_method(target, method_closure, Names.resolve_atom(ctx, atom_idx), flags) + run(pc + 1, frame, [target | rest], gas, ctx) + end + + defp run( + {@op_define_method_computed, [flags]}, + pc, + frame, + [method_closure, field_name, target | rest], + gas, + ctx + ) do + Methods.define_method_computed(target, method_closure, field_name, flags) + run(pc + 1, frame, [target | rest], gas, ctx) + end + end + end +end diff --git a/lib/quickbeam/vm/interpreter/ops/control.ex b/lib/quickbeam/vm/interpreter/ops/control.ex new file mode 100644 index 000000000..48b570c2b --- /dev/null +++ b/lib/quickbeam/vm/interpreter/ops/control.ex @@ -0,0 +1,102 @@ +defmodule QuickBEAM.VM.Interpreter.Ops.Control do + @moduledoc "Control flow opcodes: if/goto/return, try/catch, gosub/ret, throw." + + @doc "Installs the Control flow opcodes: if/goto/return, try/catch, gosub/ret, throw helpers into the caller module." + defmacro __using__(_opts) do + quote location: :keep do + alias QuickBEAM.VM.Interpreter.{Context, Values} + + # ── Control flow ── + + defp run({op, [target]}, pc, frame, [val | rest], gas, ctx) + when op in [@op_if_false, @op_if_false8] do + if Values.falsy?(val) do + gas = if target <= pc, do: check_gas(pc, frame, rest, gas, ctx), else: gas + run(target, frame, rest, gas, ctx) + else + run(pc + 1, frame, rest, gas, ctx) + end + end + + defp run({op, [target]}, pc, frame, [val | rest], gas, ctx) + when op in [@op_if_true, @op_if_true8] do + if Values.truthy?(val) do + gas = if target <= pc, do: check_gas(pc, frame, rest, gas, ctx), else: gas + run(target, frame, rest, gas, ctx) + else + run(pc + 1, frame, rest, gas, ctx) + end + end + + defp run({op, [target]}, __pc, frame, stack, gas, ctx) + when op in [@op_goto, @op_goto8, @op_goto16] do + run(target, frame, stack, gas, ctx) + end + + defp run({@op_return, []}, _pc, _frame, [val | _], _gas, _ctx), do: val + + defp run({@op_return_undef, []}, _pc, _frame, _stack, _gas, _ctx), do: :undefined + + # ── try/catch ── + + defp run( + {@op_catch, [target]}, + pc, + frame, + stack, + gas, + %Context{catch_stack: catch_stack} = ctx + ) do + ctx = + Context.mark_dirty(%{ + ctx + | catch_stack: [{target, stack} | catch_stack] + }) + + run(pc + 1, frame, [target | stack], gas, ctx) + end + + defp run( + {@op_nip_catch, []}, + pc, + frame, + [a, _catch_offset | rest], + gas, + %Context{catch_stack: [_ | rest_catch]} = ctx + ) do + run( + pc + 1, + frame, + [a | rest], + gas, + Context.mark_dirty(%{ctx | catch_stack: rest_catch}) + ) + end + + # ── gosub/ret (finally blocks) ── + + defp run({@op_gosub, [target]}, pc, frame, stack, gas, %{catch_stack: []} = ctx) do + run(target, frame, [{:return_addr, pc + 1} | stack], gas, ctx) + end + + defp run({@op_gosub, [target]}, pc, frame, stack, gas, ctx) do + run(target, frame, [{:return_addr, pc + 1, ctx.catch_stack} | stack], gas, ctx) + end + + defp run({@op_ret, []}, __pc, frame, [{:return_addr, ret_pc, saved_cs} | rest], gas, ctx) do + ctx = trim_catch_stack(ctx, saved_cs) + run(ret_pc, frame, rest, gas, ctx) + end + + defp run({@op_ret, []}, __pc, frame, [{:return_addr, ret_pc} | rest], gas, ctx) do + run(ret_pc, frame, rest, gas, ctx) + end + + # ── throw ── + + defp run({@op_throw, []}, _pc, frame, [val | _], gas, ctx) do + throw_or_catch(frame, val, gas, ctx) + end + end + end +end diff --git a/lib/quickbeam/vm/interpreter/ops/generators.ex b/lib/quickbeam/vm/interpreter/ops/generators.ex new file mode 100644 index 000000000..80a58188b --- /dev/null +++ b/lib/quickbeam/vm/interpreter/ops/generators.ex @@ -0,0 +1,35 @@ +defmodule QuickBEAM.VM.Interpreter.Ops.Generators do + @moduledoc "Generator yield, yield_star, await, initial_yield, and return_async opcodes." + + @doc "Installs the Generator yield, yield_star, await, initial_yield, and return_async opcodes helpers into the caller module." + defmacro __using__(_opts) do + quote location: :keep do + # ── Generators ── + + defp run({@op_initial_yield, []}, pc, frame, stack, gas, ctx) do + throw({:generator_yield, :undefined, pc + 1, frame, stack, gas, ctx}) + end + + defp run({@op_yield, []}, pc, frame, [val | rest], gas, ctx) do + throw({:generator_yield, val, pc + 1, frame, rest, gas, ctx}) + end + + defp run({@op_yield_star, []}, pc, frame, [val | rest], gas, ctx) do + throw({:generator_yield_star, val, pc + 1, frame, rest, gas, ctx}) + end + + defp run({@op_async_yield_star, []}, pc, frame, [val | rest], gas, ctx) do + throw({:generator_yield_star, val, pc + 1, frame, rest, gas, ctx}) + end + + defp run({@op_await, []}, pc, frame, [val | rest], gas, ctx) do + resolved = resolve_awaited(val) + run(pc + 1, frame, [resolved | rest], gas, ctx) + end + + defp run({@op_return_async, []}, _pc, _frame, [val | _], _gas, _ctx) do + throw({:generator_return, val}) + end + end + end +end diff --git a/lib/quickbeam/vm/interpreter/ops/globals.ex b/lib/quickbeam/vm/interpreter/ops/globals.ex new file mode 100644 index 000000000..6ff76ad4a --- /dev/null +++ b/lib/quickbeam/vm/interpreter/ops/globals.ex @@ -0,0 +1,430 @@ +defmodule QuickBEAM.VM.Interpreter.Ops.Globals do + @moduledoc "Global variable access, ref values, eval, and with-statement opcodes." + + @doc "Installs the Global variable access, ref values, eval, and with-statement opcodes helpers into the caller module." + defmacro __using__(_opts) do + quote location: :keep do + alias QuickBEAM.VM.{GlobalEnv, Heap, Names, Runtime} + alias QuickBEAM.VM.Interpreter.{Closures, Context, Frame} + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.ObjectModel.{Delete, Get, Put} + alias QuickBEAM.VM.PromiseState, as: Promise + + # ── Globals: get_var, put_var, define_var, eval ── + + defp run({@op_get_var_undef, [atom_idx]}, pc, frame, stack, gas, ctx) do + val = GlobalEnv.get(ctx, atom_idx, :undefined) + + val = + if val == :undefined do + name = Names.resolve_atom(ctx, atom_idx) + global_this = Map.get(ctx.globals, "globalThis") + + case global_this do + {:obj, _} -> Get.get(global_this, name) + _ -> :undefined + end + else + val + end + + run(pc + 1, frame, [val | stack], gas, ctx) + end + + defp run({@op_get_var, [atom_idx]}, pc, frame, stack, gas, ctx) do + case GlobalEnv.fetch(ctx, atom_idx) do + {:found, val} -> + run(pc + 1, frame, [val | stack], gas, ctx) + + :not_found -> + name = Names.resolve_atom(ctx, atom_idx) + global_this = Map.get(ctx.globals, "globalThis") + + case global_this do + {:obj, _} -> + val = Get.get(global_this, name) + + if val != :undefined do + run(pc + 1, frame, [val | stack], gas, ctx) + else + throw_or_catch( + frame, + Heap.make_error("#{name} is not defined", "ReferenceError"), + gas, + ctx + ) + end + + _ -> + throw_or_catch( + frame, + Heap.make_error("#{name} is not defined", "ReferenceError"), + gas, + ctx + ) + end + end + end + + defp run({op, [atom_idx]}, pc, frame, [val | rest], gas, ctx) + when op in [@op_put_var, @op_put_var_init] do + new_ctx = GlobalEnv.put(ctx, atom_idx, val) + + case Map.get(ctx.globals, "globalThis") do + {:obj, _} = gt -> + name = Names.resolve_atom(ctx, atom_idx) + Put.put(gt, name, val) + + _ -> + :ok + end + + run(pc + 1, frame, rest, gas, new_ctx) + end + + defp run({@op_define_func, [atom_idx, _flags]}, pc, frame, [fun | rest], gas, ctx) do + next_ctx = GlobalEnv.put(ctx, atom_idx, fun) + run(pc + 1, frame, rest, gas, next_ctx) + end + + defp run({@op_define_var, [atom_idx, _scope]}, pc, frame, stack, gas, ctx) do + ctx = GlobalEnv.define_var(ctx, atom_idx) + + case Map.get(ctx.globals, "globalThis") do + {:obj, ref} -> + name = Names.resolve_atom(ctx, atom_idx) + stored = Heap.get_obj(ref) + + if is_map(stored) and not Map.has_key?(stored, name) do + Heap.put_obj(ref, Map.put(stored, name, :undefined)) + + Heap.put_prop_desc(ref, name, %{ + writable: true, + enumerable: true, + configurable: false + }) + end + + _ -> + :ok + end + + run(pc + 1, frame, stack, gas, ctx) + end + + defp run({@op_check_define_var, [atom_idx, _scope]}, pc, frame, stack, gas, ctx) do + GlobalEnv.check_define_var(ctx, atom_idx) + run(pc + 1, frame, stack, gas, ctx) + end + + # ── Closure variable refs (mutable) ── + + defp run({@op_make_loc_ref, [atom_idx, var_idx]}, pc, frame, stack, gas, ctx) do + ref = make_ref() + Heap.put_cell(ref, elem(elem(frame, Frame.locals()), var_idx)) + prop_name = Names.resolve_atom(ctx, atom_idx) + run(pc + 1, frame, [prop_name, {:cell, ref} | stack], gas, ctx) + end + + defp run({@op_make_var_ref, [atom_idx]}, pc, frame, stack, gas, ctx) do + name = Names.resolve_atom(ctx, atom_idx) + val = Map.get(ctx.globals, name, :undefined) + ref = make_ref() + Heap.put_cell(ref, val) + run(pc + 1, frame, [name, {:cell, ref} | stack], gas, ctx) + end + + defp run({@op_make_arg_ref, [atom_idx, var_idx]}, pc, frame, stack, gas, ctx) do + ref = make_ref() + Heap.put_cell(ref, get_arg_value(ctx, var_idx)) + prop_name = Names.resolve_atom(ctx, atom_idx) + run(pc + 1, frame, [prop_name, {:cell, ref} | stack], gas, ctx) + end + + defp run({@op_make_var_ref_ref, [atom_idx, var_idx]}, pc, frame, stack, gas, ctx) do + val = elem(elem(frame, Frame.var_refs()), var_idx) + + cell = + case val do + {:cell, _} -> + val + + _ -> + ref = make_ref() + Heap.put_cell(ref, val) + {:cell, ref} + end + + prop_name = Names.resolve_atom(ctx, atom_idx) + run(pc + 1, frame, [prop_name, cell | stack], gas, ctx) + end + + defp run({@op_get_var_ref_check, [idx]}, pc, frame, stack, gas, ctx) do + case elem(elem(frame, Frame.var_refs()), idx) do + :__tdz__ -> + message = + if current_var_ref_name(ctx, idx) == "this", + do: "this is not initialized", + else: "Cannot access variable before initialization" + + JSThrow.reference_error!(message) + + {:cell, _} = cell -> + val = Closures.read_cell(cell) + + if val == :__tdz__ and current_var_ref_name(ctx, idx) == "this" and + derived_this_uninitialized?(ctx) do + JSThrow.reference_error!("this is not initialized") + end + + run(pc + 1, frame, [val | stack], gas, ctx) + + val -> + run(pc + 1, frame, [val | stack], gas, ctx) + end + end + + defp run({op, [idx]}, pc, frame, [val | rest], gas, ctx) + when op in [@op_put_var_ref_check, @op_put_var_ref_check_init] do + case elem(elem(frame, Frame.var_refs()), idx) do + {:cell, ref} -> Closures.write_cell({:cell, ref}, val) + _ -> :ok + end + + run(pc + 1, frame, rest, gas, ctx) + end + + defp run( + {@op_get_ref_value, []}, + pc, + frame, + [_prop_name, {:cell, _} = ref | _] = stack, + gas, + ctx + ) do + run(pc + 1, frame, [Closures.read_cell(ref) | stack], gas, ctx) + end + + defp run({@op_get_ref_value, []}, pc, frame, [prop_name, obj | _] = stack, gas, ctx) + when is_binary(prop_name) do + run(pc + 1, frame, [Get.get(obj, prop_name) | stack], gas, ctx) + end + + defp run( + {@op_put_ref_value, []}, + pc, + frame, + [val, prop_name, {:cell, _} = ref | rest], + gas, + ctx + ) do + Closures.write_cell(ref, val) + + ctx = + if is_binary(prop_name) do + new_globals = Map.put(ctx.globals, prop_name, val) + Heap.put_persistent_globals(new_globals) + Heap.put_base_globals(new_globals) + + case Map.get(ctx.globals, "globalThis") do + {:obj, _} = gt -> Put.put(gt, prop_name, val) + _ -> :ok + end + + Context.mark_dirty(%{ctx | globals: new_globals}) + else + ctx + end + + run(pc + 1, frame, rest, gas, ctx) + end + + defp run({@op_put_ref_value, []}, pc, frame, [val, key, obj | rest], gas, ctx) + when is_binary(key) do + if current_strict_mode?(ctx) and is_object(obj) and + not Put.has_property(obj, key) do + throw_or_catch( + frame, + Heap.make_error("#{key} is not defined", "ReferenceError"), + gas, + ctx + ) + else + try do + Put.put(obj, key, val) + run(pc + 1, frame, rest, gas, ctx) + catch + {:js_throw, error} -> + ctx = Heap.get_ctx() || ctx + throw_or_catch(frame, error, gas, ctx) + end + end + end + + # ── eval ── + + defp run({@op_import, []}, pc, frame, [specifier, _import_meta | rest], gas, ctx) do + result = + if is_binary(specifier) and ctx.runtime_pid != nil do + case QuickBEAM.Runtime.load_module(ctx.runtime_pid, specifier, "") do + :ok -> + Promise.resolved(Runtime.new_object()) + + {:error, _} -> + Promise.rejected( + Heap.make_error("Cannot find module '#{specifier}'", "TypeError") + ) + end + else + Promise.rejected(Heap.make_error("Invalid module specifier", "TypeError")) + end + + run(pc + 1, frame, [result | rest], gas, ctx) + end + + defp run({@op_eval, [argc | scope_args]}, pc, frame, stack, gas, ctx) do + {args, rest} = Enum.split(stack, argc + 1) + eval_ref = List.last(args) + call_args = Enum.take(args, argc) |> Enum.reverse() + scope_depth = List.first(scope_args, -1) + var_objs = eval_scope_var_objects(frame, ctx, scope_args != [], scope_depth) + + run_eval_or_call(pc, frame, rest, gas, ctx, eval_ref, call_args, scope_depth, var_objs) + end + + defp run({@op_apply_eval, [scope_idx_raw]}, pc, frame, [arg_array, fun | rest], gas, ctx) do + args = Heap.to_list(arg_array) + scope_idx = scope_idx_raw - 1 + var_objs = eval_scope_var_objects(frame, ctx, scope_idx >= 0, scope_idx) + + run_eval_or_call(pc, frame, rest, gas, ctx, fun, args, scope_idx, var_objs) + end + + # ── with statement ── + + defp run( + {@op_with_get_var, [atom_idx, target, _is_with]}, + pc, + frame, + [obj | rest], + gas, + ctx + ) do + key = Names.resolve_atom(ctx, atom_idx) + + result = + try do + {:ok, with_has_property?(obj, key)} + catch + {:js_throw, error} -> {:throw, error} + end + + case result do + {:ok, true} -> + ctx = refresh_persistent_globals(ctx) + run(target, frame, [Get.get(obj, key) | rest], gas, ctx) + + {:ok, false} -> + ctx = refresh_persistent_globals(ctx) + run(pc + 1, frame, rest, gas, ctx) + + {:throw, error} -> + throw_or_catch(frame, error, gas, ctx) + end + end + + defp run( + {@op_with_put_var, [atom_idx, target, _is_with]}, + pc, + frame, + [obj, val | rest], + gas, + ctx + ) do + key = Names.resolve_atom(ctx, atom_idx) + + if with_has_property?(obj, key) do + Put.put(obj, key, val) + run(target, frame, rest, gas, ctx) + else + run(pc + 1, frame, [val | rest], gas, ctx) + end + end + + defp run( + {@op_with_delete_var, [atom_idx, target, _is_with]}, + pc, + frame, + [obj | rest], + gas, + ctx + ) do + key = Names.resolve_atom(ctx, atom_idx) + + if with_has_property?(obj, key) do + Delete.delete_property(obj, key) + run(target, frame, [true | rest], gas, ctx) + else + run(pc + 1, frame, rest, gas, ctx) + end + end + + defp run( + {@op_with_make_ref, [atom_idx, target, _is_with]}, + pc, + frame, + [obj | rest], + gas, + ctx + ) do + key = Names.resolve_atom(ctx, atom_idx) + + if with_has_property?(obj, key) do + ctx = refresh_persistent_globals(ctx) + run(target, frame, [key, obj | rest], gas, ctx) + else + ctx = refresh_persistent_globals(ctx) + run(pc + 1, frame, rest, gas, ctx) + end + end + + defp run( + {@op_with_get_ref, [atom_idx, target, _is_with]}, + pc, + frame, + [obj | rest], + gas, + ctx + ) do + key = Names.resolve_atom(ctx, atom_idx) + + if with_has_property?(obj, key) do + ctx = refresh_persistent_globals(ctx) + run(target, frame, [Get.get(obj, key), obj | rest], gas, ctx) + else + ctx = refresh_persistent_globals(ctx) + run(pc + 1, frame, rest, gas, ctx) + end + end + + defp run( + {@op_with_get_ref_undef, [atom_idx, target, _is_with]}, + pc, + frame, + [obj | rest], + gas, + ctx + ) do + key = Names.resolve_atom(ctx, atom_idx) + + if with_has_property?(obj, key) do + ctx = refresh_persistent_globals(ctx) + run(target, frame, [Get.get(obj, key), :undefined | rest], gas, ctx) + else + ctx = refresh_persistent_globals(ctx) + run(pc + 1, frame, rest, gas, ctx) + end + end + end + end +end diff --git a/lib/quickbeam/vm/interpreter/ops/iterators.ex b/lib/quickbeam/vm/interpreter/ops/iterators.ex new file mode 100644 index 000000000..15d84ca49 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/ops/iterators.ex @@ -0,0 +1,325 @@ +defmodule QuickBEAM.VM.Interpreter.Ops.Iterators do + @moduledoc "For-in, for-of, iterator_*, spread, and array construction opcodes." + + @doc "Installs the For-in, for-of, iterator_*, spread, and array construction opcodes helpers into the caller module." + defmacro __using__(_opts) do + quote location: :keep do + import Bitwise, only: [band: 2] + alias QuickBEAM.VM.{Heap, Invocation, Runtime} + alias QuickBEAM.VM.Interpreter.Context + alias QuickBEAM.VM.ObjectModel.{Copy, Get, Put} + + # ── for-in ── + + defp run({@op_for_in_start, []}, _pc, frame, [obj | _rest], gas, ctx) + when obj == :uninitialized do + throw_or_catch( + frame, + Heap.make_error("this is not initialized", "ReferenceError"), + gas, + ctx + ) + end + + defp run({@op_for_in_start, []}, pc, frame, [obj | rest], gas, ctx) do + keys = Copy.enumerable_keys(obj) + run(pc + 1, frame, [{:for_in_iterator, keys, obj} | rest], gas, ctx) + end + + defp run( + {@op_for_in_next, []} = instr, + pc, + frame, + [{:for_in_iterator, [key | rest_keys], obj} | rest], + gas, + ctx + ) do + if Put.has_property(obj, key) do + run(pc + 1, frame, [false, key, {:for_in_iterator, rest_keys, obj} | rest], gas, ctx) + else + run(instr, pc, frame, [{:for_in_iterator, rest_keys, obj} | rest], gas, ctx) + end + end + + defp run({@op_for_in_next, []}, pc, frame, [iter | rest], gas, ctx) do + run(pc + 1, frame, [true, :undefined, iter | rest], gas, ctx) + end + + # ── spread / array construction ── + + defp run({@op_append, []}, pc, frame, [obj, idx, arr | rest], gas, ctx) do + src_list = + case obj do + {:qb_arr, arr} -> + :array.to_list(arr) + + list when is_list(list) -> + list + + {:obj, ref} -> + stored = Heap.get_obj(ref) + + cond do + match?({:qb_arr, _}, stored) -> + Heap.to_list({:obj, ref}) + + is_list(stored) -> + stored + + is_map(stored) and Map.has_key?(stored, {:symbol, "Symbol.iterator"}) -> + raw_iter = Map.get(stored, {:symbol, "Symbol.iterator"}) + + iter_fn = + case raw_iter do + {:accessor, getter, _} when getter != nil -> Get.call_getter(getter, obj) + _ -> raw_iter + end + + iter_obj = Invocation.invoke_callback_or_throw(iter_fn, [], obj) + + unless is_object(iter_obj) do + throw( + {:js_throw, + Heap.make_error( + "Result of the Symbol.iterator method is not an object", + "TypeError" + )} + ) + end + + collect_iterator(iter_obj, []) + + is_map(stored) and Map.has_key?(stored, set_data()) -> + Map.get(stored, set_data(), []) + + is_map(stored) and Map.has_key?(stored, map_data()) -> + Map.get(stored, map_data(), []) + + true -> + [] + end + + s when is_binary(s) -> + spread_string_codepoints(s) + + _ -> + [] + end + + arr_list = + case arr do + {:qb_arr, arr_data} -> :array.to_list(arr_data) + list when is_list(list) -> list + {:obj, ref} -> Heap.to_list({:obj, ref}) + _ -> [] + end + + merged = arr_list ++ src_list + new_idx = if(is_integer(idx), do: idx, else: Runtime.to_int(idx)) + length(src_list) + + merged_obj = + case arr do + {:obj, ref} -> + Heap.put_obj(ref, merged) + {:obj, ref} + + _ -> + merged + end + + run(pc + 1, frame, [new_idx, merged_obj | rest], gas, ctx) + end + + defp run({@op_define_array_el, []}, pc, frame, [val, idx, obj | rest], gas, ctx) do + {_idx, obj2} = Put.define_array_el(obj, idx, val) + run(pc + 1, frame, [idx, obj2 | rest], gas, ctx) + end + + # ── Iterators ── + + defp run({@op_for_of_start, []}, pc, frame, [obj | rest], gas, ctx) do + result = + try do + {:ok, for_of_start_iter(obj)} + catch + {:js_throw, val} -> {:throw, val} + end + + case result do + {:ok, {iter_obj, next_fn}} -> + run(pc + 1, frame, [0, next_fn, iter_obj | rest], gas, ctx) + + {:throw, error} -> + throw_or_catch(frame, error, gas, ctx) + end + end + + defp run({@op_for_of_next, [idx]}, pc, frame, stack, gas, ctx) do + offset = 3 + idx + iter_obj = Enum.at(stack, offset - 1) + next_fn = Enum.at(stack, offset - 2) + + if iter_obj == :undefined do + run(pc + 1, frame, [true, :undefined | stack], gas, ctx) + else + raw_result = Invocation.invoke_callback_or_throw(next_fn, []) + + result = resolve_awaited(raw_result) + + ctx = + case Heap.get_persistent_globals() do + nil -> ctx + p when map_size(p) == 0 -> ctx + p -> Context.mark_dirty(%{ctx | globals: Map.merge(ctx.globals, p)}) + end + + done = Get.get(result, "done") + value = Get.get(result, "value") + + if done == true do + cleared = List.replace_at(stack, offset - 1, :undefined) + run(pc + 1, frame, [true, :undefined | cleared], gas, ctx) + else + run(pc + 1, frame, [false, value | stack], gas, ctx) + end + end + end + + defp run( + {@op_iterator_next, []}, + pc, + frame, + [val, catch_offset, next_fn, iter_obj | rest], + gas, + ctx + ) do + result = Invocation.invoke_callback_or_throw(next_fn, [val]) + persistent = Heap.get_persistent_globals() || %{} + ctx = Context.mark_dirty(%{ctx | globals: Map.merge(ctx.globals, persistent)}) + run(pc + 1, frame, [result, catch_offset, next_fn, iter_obj | rest], gas, ctx) + end + + defp run({@op_iterator_get_value_done, []}, pc, frame, [result | rest], gas, ctx) do + done = Get.get(result, "done") + value = Get.get(result, "value") + + if done == true do + run(pc + 1, frame, [true, :undefined | rest], gas, ctx) + else + run(pc + 1, frame, [false, value | rest], gas, ctx) + end + end + + defp run( + {@op_iterator_close, []}, + pc, + frame, + [_catch_offset, _next_fn, iter_obj | rest], + gas, + ctx + ) do + ctx = + if iter_obj != :undefined do + return_fn = Get.get(iter_obj, "return") + + if return_fn != :undefined and return_fn != nil do + Invocation.invoke_callback_or_throw(return_fn, [], iter_obj) + persistent = Heap.get_persistent_globals() || %{} + Context.mark_dirty(%{ctx | globals: Map.merge(ctx.globals, persistent)}) + else + ctx + end + else + ctx + end + + run(pc + 1, frame, rest, gas, ctx) + end + + defp run({@op_iterator_check_object, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, stack, gas, ctx) + + defp run({@op_iterator_call, [flags]}, pc, frame, stack, gas, ctx) do + [_val, _catch_offset, _next_fn, iter_obj | _] = stack + method_name = if band(flags, 1) == 1, do: "throw", else: "return" + method = Get.get(iter_obj, method_name) + + if method == :undefined or method == nil do + run(pc + 1, frame, [true | stack], gas, ctx) + else + result = + if band(flags, 2) == 2 do + Runtime.call_callback(method, []) + else + [val | _] = stack + Runtime.call_callback(method, [val]) + end + + [_ | rest] = stack + run(pc + 1, frame, [false, result | rest], gas, ctx) + end + end + + defp run({@op_iterator_call, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, stack, gas, ctx) + + # ── for-await-of ── + + defp run({@op_for_await_of_start, []}, pc, frame, [obj | rest], gas, ctx) do + sym_async_iter = {:symbol, "Symbol.asyncIterator"} + sym_iter = {:symbol, "Symbol.iterator"} + + {iter_obj, next_fn} = + case obj do + {:obj, ref} -> + stored = Heap.get_obj(ref, []) + + cond do + match?({:qb_arr, _}, stored) -> + make_list_iterator(Heap.to_list({:obj, ref})) + + is_list(stored) -> + make_list_iterator(stored) + + is_map(stored) and Map.has_key?(stored, sym_async_iter) -> + async_iter_fn = Map.get(stored, sym_async_iter) + iter = Invocation.invoke_callback_or_throw(async_iter_fn, [], obj) + {iter, Get.get(iter, "next")} + + is_map(stored) and Map.has_key?(stored, sym_iter) -> + iter_fn = Map.get(stored, sym_iter) + iter = Invocation.invoke_callback_or_throw(iter_fn, [], obj) + {iter, Get.get(iter, "next")} + + is_map(stored) and Map.has_key?(stored, "next") -> + {obj, Get.get(obj, "next")} + + true -> + {obj, :undefined} + end + + _ -> + {obj, :undefined} + end + + run(pc + 1, frame, [0, next_fn, iter_obj | rest], gas, ctx) + end + + defp spread_string_codepoints(<<>>), do: [] + + defp spread_string_codepoints(<<0xED, b2, b3, rest::binary>>) + when b2 in 0xA0..0xBF and b3 in 0x80..0xBF do + # WTF-8 lone surrogate - decode as-is (preserve WTF-8 bytes) + [<<0xED, b2, b3>> | spread_string_codepoints(rest)] + end + + defp spread_string_codepoints(<>) do + [<> | spread_string_codepoints(rest)] + end + + defp spread_string_codepoints(<>) do + [<> | spread_string_codepoints(rest)] + end + end + end +end diff --git a/lib/quickbeam/vm/interpreter/ops/locals.ex b/lib/quickbeam/vm/interpreter/ops/locals.ex new file mode 100644 index 000000000..f03ab2ea6 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/ops/locals.ex @@ -0,0 +1,202 @@ +defmodule QuickBEAM.VM.Interpreter.Ops.Locals do + @moduledoc "Args, locals, and closure variable reference opcodes." + + @doc "Installs the Args, locals, and closure variable reference opcodes helpers into the caller module." + defmacro __using__(_opts) do + quote location: :keep do + alias QuickBEAM.VM.{Heap, Names} + alias QuickBEAM.VM.Interpreter.{Closures, Frame} + + # ── Args ── + + defp run({op, [idx]}, pc, frame, stack, gas, ctx) + when op in [@op_get_arg, @op_get_arg0, @op_get_arg1, @op_get_arg2, @op_get_arg3], + do: run(pc + 1, frame, [get_arg_value(ctx, idx) | stack], gas, ctx) + + # ── Locals ── + + defp run({op, [idx]}, pc, frame, stack, gas, ctx) + when op in [ + @op_get_loc, + @op_get_loc0, + @op_get_loc1, + @op_get_loc2, + @op_get_loc3, + @op_get_loc8 + ] do + run( + pc + 1, + frame, + [ + Closures.read_captured_local( + elem(frame, Frame.l2v()), + idx, + elem(frame, Frame.locals()), + elem(frame, Frame.var_refs()) + ) + | stack + ], + gas, + ctx + ) + end + + defp run({op, [idx]}, pc, frame, [val | rest], gas, ctx) + when op in [ + @op_put_loc, + @op_put_loc0, + @op_put_loc1, + @op_put_loc2, + @op_put_loc3, + @op_put_loc8 + ] do + Closures.write_captured_local( + elem(frame, Frame.l2v()), + idx, + val, + elem(frame, Frame.locals()), + elem(frame, Frame.var_refs()) + ) + + run(pc + 1, put_local(frame, idx, val), rest, gas, ctx) + end + + defp run({op, [idx]}, pc, frame, [val | rest], gas, ctx) + when op in [ + @op_set_loc, + @op_set_loc0, + @op_set_loc1, + @op_set_loc2, + @op_set_loc3, + @op_set_loc8 + ] do + Closures.write_captured_local( + elem(frame, Frame.l2v()), + idx, + val, + elem(frame, Frame.locals()), + elem(frame, Frame.var_refs()) + ) + + run(pc + 1, put_local(frame, idx, val), [val | rest], gas, ctx) + end + + defp run({@op_set_loc_uninitialized, [idx]}, pc, frame, stack, gas, ctx) do + Closures.write_captured_local( + elem(frame, Frame.l2v()), + idx, + :__tdz__, + elem(frame, Frame.locals()), + elem(frame, Frame.var_refs()) + ) + + run(pc + 1, put_local(frame, idx, :__tdz__), stack, gas, ctx) + end + + defp run({@op_get_loc_check, [idx]}, pc, frame, stack, gas, ctx) do + raw = elem(elem(frame, Frame.locals()), idx) + ensure_initialized_local!(ctx, idx, raw) + + val = + Closures.read_captured_local( + elem(frame, Frame.l2v()), + idx, + elem(frame, Frame.locals()), + elem(frame, Frame.var_refs()) + ) + + run(pc + 1, frame, [val | stack], gas, ctx) + end + + defp run({@op_put_loc_check, [idx]}, pc, frame, [val | rest], gas, ctx) do + ensure_initialized_local!(ctx, idx, val) + + Closures.write_captured_local( + elem(frame, Frame.l2v()), + idx, + val, + elem(frame, Frame.locals()), + elem(frame, Frame.var_refs()) + ) + + run(pc + 1, put_local(frame, idx, val), rest, gas, ctx) + end + + defp run({@op_put_loc_check_init, [idx]}, pc, frame, [val | rest], gas, ctx) do + run(pc + 1, put_local(frame, idx, val), rest, gas, ctx) + end + + defp run({@op_get_loc0_loc1, [idx0, idx1]}, pc, frame, stack, gas, ctx) do + locals = elem(frame, Frame.locals()) + run(pc + 1, frame, [elem(locals, idx1), elem(locals, idx0) | stack], gas, ctx) + end + + # ── Variable references (closures) ── + + defp run({op, [idx]}, pc, frame, stack, gas, ctx) + when op in [ + @op_get_var_ref, + @op_get_var_ref0, + @op_get_var_ref1, + @op_get_var_ref2, + @op_get_var_ref3 + ] do + val = + case elem(elem(frame, Frame.var_refs()), idx) do + {:cell, _} = cell -> Closures.read_cell(cell) + other -> other + end + + run(pc + 1, frame, [val | stack], gas, ctx) + end + + defp run({op, [idx]}, pc, frame, [val | rest], gas, ctx) + when op in [ + @op_put_var_ref, + @op_put_var_ref0, + @op_put_var_ref1, + @op_put_var_ref2, + @op_put_var_ref3 + ] do + case elem(elem(frame, Frame.var_refs()), idx) do + {:cell, ref} -> Closures.write_cell({:cell, ref}, val) + _ -> :ok + end + + run(pc + 1, frame, rest, gas, ctx) + end + + defp run({op, [idx]}, pc, frame, [val | rest], gas, ctx) + when op in [ + @op_set_var_ref, + @op_set_var_ref0, + @op_set_var_ref1, + @op_set_var_ref2, + @op_set_var_ref3 + ] do + case elem(elem(frame, Frame.var_refs()), idx) do + {:cell, ref} -> Closures.write_cell({:cell, ref}, val) + _ -> :ok + end + + run(pc + 1, frame, [val | rest], gas, ctx) + end + + defp run({@op_close_loc, [idx]}, pc, frame, stack, gas, ctx) do + case Map.get(elem(frame, Frame.l2v()), idx) do + nil -> + run(pc + 1, frame, stack, gas, ctx) + + vref_idx -> + vrefs = elem(frame, Frame.var_refs()) + old_cell = elem(vrefs, vref_idx) + val = Closures.read_cell(old_cell) + new_ref = make_ref() + Heap.put_cell(new_ref, val) + frame = put_elem(frame, Frame.var_refs(), put_elem(vrefs, vref_idx, {:cell, new_ref})) + run(pc + 1, frame, stack, gas, ctx) + end + end + end + end +end diff --git a/lib/quickbeam/vm/interpreter/ops/objects.ex b/lib/quickbeam/vm/interpreter/ops/objects.ex new file mode 100644 index 000000000..f03d18e76 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/ops/objects.ex @@ -0,0 +1,704 @@ +defmodule QuickBEAM.VM.Interpreter.Ops.Objects do + @moduledoc "Object creation, field access, array element access, and misc object stubs." + + @doc "Installs the Object creation, field access, array element access, and misc object stubs helpers into the caller module." + defmacro __using__(_opts) do + quote location: :keep do + import Bitwise, only: [&&&: 2, bsr: 2] + alias QuickBEAM.VM.{Builtin, Bytecode, Heap, Invocation, Names, Runtime} + alias QuickBEAM.VM.Interpreter.{Context, Values} + alias QuickBEAM.VM.ObjectModel.{Class, Copy, Delete, Functions, Get, Private, Put} + + # ── Objects ── + + defp run({@op_object, []}, pc, frame, stack, gas, ctx) do + ref = make_ref() + proto = Heap.get_object_prototype() + init = if proto, do: %{proto() => proto}, else: %{} + Heap.put_obj(ref, init) + run(pc + 1, frame, [{:obj, ref} | stack], gas, ctx) + end + + defp run({@op_get_field, [atom_idx]}, __pc, frame, [obj | _rest], gas, ctx) + when obj == nil or obj == :undefined do + throw_null_property_error(frame, obj, atom_idx, gas, ctx) + end + + defp run({@op_get_field, [atom_idx]}, pc, frame, [obj | rest], gas, ctx) do + run( + pc + 1, + frame, + [Get.get(obj, Names.resolve_atom(ctx, atom_idx)) | rest], + gas, + ctx + ) + end + + defp run({@op_put_field, [atom_idx]}, pc, frame, [val, obj | rest], gas, ctx) do + name = Names.resolve_atom(ctx, atom_idx) + + result = + try do + Put.put(obj, name, val) + :ok + catch + {:js_throw, error} -> {:throw, error} + end + + case result do + :ok -> + ctx = sync_global_this_write(ctx, obj, name, val) + run(pc + 1, frame, rest, gas, ctx) + + {:throw, error} -> + throw_or_catch(frame, error, gas, ctx) + end + end + + defp run({@op_define_field, [atom_idx]}, pc, frame, [val, obj | rest], gas, ctx) do + try do + Put.put(obj, Names.resolve_atom(ctx, atom_idx), val) + run(pc + 1, frame, [obj | rest], gas, ctx) + catch + {:js_throw, error} -> + ctx = Heap.get_ctx() || ctx + throw_or_catch(frame, error, gas, ctx) + end + end + + defp run({@op_get_array_el, []}, pc, frame, [idx, obj | rest], gas, ctx) do + try do + run(pc + 1, frame, [Put.get_element(obj, idx) | rest], gas, ctx) + catch + {:js_throw, error} -> + ctx = Heap.get_ctx() || ctx + throw_or_catch(frame, error, gas, ctx) + end + end + + defp run({@op_put_array_el, []}, pc, frame, [val, idx, obj | rest], gas, ctx) do + try do + Put.put_element(obj, idx, val) + + ctx = + case Heap.get_persistent_globals() do + nil -> ctx + p when map_size(p) == 0 -> ctx + p -> Context.mark_dirty(%{ctx | globals: Map.merge(ctx.globals, p)}) + end + + run(pc + 1, frame, rest, gas, ctx) + catch + {:js_throw, error} -> + ctx = Heap.get_ctx() || ctx + throw_or_catch(frame, error, gas, ctx) + end + end + + defp run({@op_get_super_value, []}, pc, frame, [key, proto, this_obj | rest], gas, ctx) do + val = Class.get_super_value(proto, this_obj, key) + run(pc + 1, frame, [val | rest], gas, ctx) + end + + defp run( + {@op_put_super_value, []}, + pc, + frame, + [val, key, proto_obj, this_obj | rest], + gas, + ctx + ) do + try do + Class.put_super_value(proto_obj, this_obj, key, val) + run(pc + 1, frame, rest, gas, ctx) + catch + {:js_throw, error} -> + ctx = Heap.get_ctx() || ctx + throw_or_catch(frame, error, gas, ctx) + end + end + + defp run({@op_get_private_field, []}, pc, frame, [key, obj | rest], gas, ctx) do + case Private.get_field(obj, key) do + :missing -> throw_or_catch(frame, Private.brand_error(), gas, ctx) + val -> run(pc + 1, frame, [val | rest], gas, ctx) + end + end + + defp run({@op_put_private_field, []}, pc, frame, [key, val, obj | rest], gas, ctx) do + case Private.put_field!(obj, key, val) do + :ok -> run(pc + 1, frame, rest, gas, ctx) + :error -> throw_or_catch(frame, Private.brand_error(), gas, ctx) + end + end + + defp run({@op_define_private_field, []}, pc, frame, [val, key, obj | rest], gas, ctx) do + case Private.define_field!(obj, key, val) do + :ok -> run(pc + 1, frame, rest, gas, ctx) + :error -> throw_or_catch(frame, Private.brand_error(), gas, ctx) + end + end + + defp run({@op_private_in, []}, pc, frame, [key, obj | rest], gas, ctx) do + result = Private.has_field?(obj, key) or Private.has_brand?(obj, key) + run(pc + 1, frame, [result | rest], gas, ctx) + end + + defp run({@op_get_length, []}, pc, frame, [obj | rest], gas, ctx) do + run(pc + 1, frame, [Get.length_of(obj) | rest], gas, ctx) + end + + defp run({@op_array_from, [argc]}, pc, frame, stack, gas, ctx) do + {elems, rest} = Enum.split(stack, argc) + ref = make_ref() + Heap.put_obj(ref, Enum.reverse(elems)) + run(pc + 1, frame, [{:obj, ref} | rest], gas, ctx) + end + + defp run({@op_get_field2, [atom_idx]}, __pc, frame, [obj | _rest], gas, ctx) + when obj == nil or obj == :undefined do + throw_null_property_error(frame, obj, atom_idx, gas, ctx) + end + + defp run({@op_get_field2, [atom_idx]}, pc, frame, [obj | rest], gas, ctx) do + val = Get.get(obj, Names.resolve_atom(ctx, atom_idx)) + run(pc + 1, frame, [val, obj | rest], gas, ctx) + end + + # ── Array element access (2-element push) ── + + defp run({@op_get_array_el2, []}, pc, frame, [idx, obj | rest], gas, ctx) do + run(pc + 1, frame, [Get.get(obj, idx), obj | rest], gas, ctx) + end + + # ── Misc / no-op ── + + defp run({@op_nop, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, stack, gas, ctx) + + defp run({@op_to_object, []}, _pc, frame, [nil | _rest], gas, ctx) do + throw_or_catch( + frame, + Heap.make_error("Cannot convert null to object", "TypeError"), + gas, + ctx + ) + end + + defp run({@op_to_object, []}, _pc, frame, [:undefined | _rest], gas, ctx) do + throw_or_catch( + frame, + Heap.make_error("Cannot convert undefined to object", "TypeError"), + gas, + ctx + ) + end + + defp run({@op_to_object, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, stack, gas, ctx) + + defp run({@op_to_propkey, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, stack, gas, ctx) + + defp run({@op_to_propkey2, []}, _pc, frame, [_key, obj | _rest], gas, ctx) + when obj == nil or obj == :undefined do + nullish = if obj == nil, do: "null", else: "undefined" + + throw_or_catch( + frame, + Heap.make_error("Cannot read properties of #{nullish}", "TypeError"), + gas, + ctx + ) + end + + defp run({@op_to_propkey2, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, stack, gas, ctx) + + defp run({@op_check_ctor, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, stack, gas, ctx) + + defp run({@op_check_ctor_return, []}, pc, frame, [val | rest], gas, ctx) do + case Class.check_ctor_return(val) do + {replace_with_this?, checked_val} -> + run(pc + 1, frame, [replace_with_this?, checked_val | rest], gas, ctx) + + :error -> + throw_or_catch( + frame, + Heap.make_error( + "Derived constructors may only return object or undefined", + "TypeError" + ), + gas, + ctx + ) + end + end + + defp run({@op_set_name, [atom_idx]}, pc, frame, [fun | rest], gas, ctx) do + named = Functions.set_name_atom(fun, atom_idx, ctx.atoms) + run(pc + 1, frame, [named | rest], gas, ctx) + end + + defp run({@op_is_undefined, []}, pc, frame, [a | rest], gas, ctx), + do: run(pc + 1, frame, [a == :undefined | rest], gas, ctx) + + defp run({@op_is_null, []}, pc, frame, [a | rest], gas, ctx), + do: run(pc + 1, frame, [a == nil | rest], gas, ctx) + + defp run({@op_is_undefined_or_null, []}, pc, frame, [a | rest], gas, ctx), + do: run(pc + 1, frame, [a == :undefined or a == nil | rest], gas, ctx) + + defp run({@op_invalid, []}, _pc, _frame, _stack, _gas, _ctx), + do: throw({:error, :invalid_opcode}) + + # ── Misc stubs ── + + defp run({@op_set_home_object, []}, pc, frame, [method, target | _] = stack, gas, ctx) do + Functions.put_home_object(method, target) + run(pc + 1, frame, stack, gas, ctx) + end + + defp run({@op_set_proto, []}, pc, frame, [proto, obj | rest], gas, ctx) do + case obj do + {:obj, ref} -> + map = Heap.get_obj(ref, %{}) + + if is_map(map) do + Heap.put_obj(ref, Map.put(map, proto(), proto)) + end + + _ -> + :ok + end + + run(pc + 1, frame, [obj | rest], gas, ctx) + end + + defp run( + {@op_special_object, [type]}, + pc, + frame, + stack, + gas, + %Context{arg_buf: arg_buf, current_func: current_func, home_object: home_object} = + ctx + ) do + val = + case type do + 0 -> + args_list = Tuple.to_list(arg_buf) + Heap.wrap(args_list) + + 1 -> + args_list = Tuple.to_list(arg_buf) + Heap.wrap(args_list) + + 2 -> + current_func + + 3 -> + ctx.new_target + + 4 -> + if home_object == :undefined do + Functions.current_home_object(current_func) + else + home_object + end + + 5 -> + Heap.wrap(%{}) + + 6 -> + Heap.wrap(%{}) + + 7 -> + Heap.wrap(%{"__proto__" => nil}) + + _ -> + :undefined + end + + run(pc + 1, frame, [val | stack], gas, ctx) + end + + defp run({@op_rest, [start_idx]}, pc, frame, stack, gas, %Context{arg_buf: arg_buf} = ctx) do + rest_args = + if start_idx < tuple_size(arg_buf) do + Tuple.to_list(arg_buf) |> Enum.drop(start_idx) + else + [] + end + + ref = make_ref() + Heap.put_obj(ref, rest_args) + run(pc + 1, frame, [{:obj, ref} | stack], gas, ctx) + end + + defp run({@op_typeof_is_function, []}, pc, frame, [val | rest], gas, ctx) do + result = Builtin.callable?(val) + run(pc + 1, frame, [result | rest], gas, ctx) + end + + defp run({@op_typeof_is_undefined, []}, pc, frame, [val | rest], gas, ctx) do + result = val == :undefined or val == nil + run(pc + 1, frame, [result | rest], gas, ctx) + end + + defp run({@op_throw_error, []}, _pc, frame, [val | _], gas, ctx), + do: throw_or_catch(frame, val, gas, ctx) + + defp run({@op_throw_error, [atom_idx, reason]}, __pc, frame, _stack, gas, ctx) do + name = Names.resolve_atom(ctx, atom_idx) + + {error_type, message} = + QuickBEAM.VM.Compiler.RuntimeHelpers.throw_error_message(name, reason) + + throw_or_catch(frame, Heap.make_error(message, error_type), gas, ctx) + end + + defp run({@op_set_name_computed, []}, pc, frame, [fun, name_val | rest], gas, ctx) do + named = Functions.set_name_computed(fun, name_val) + run(pc + 1, frame, [named, name_val | rest], gas, ctx) + end + + defp run({@op_copy_data_properties, []}, pc, frame, [source, target | rest], gas, ctx) do + try do + QuickBEAM.VM.ObjectModel.Copy.copy_data_properties(target, source) + catch + {:js_throw, error} -> throw_or_catch(frame, error, gas, ctx) + end + + ctx = + case Heap.get_persistent_globals() do + nil -> ctx + p when map_size(p) == 0 -> ctx + p -> Context.mark_dirty(%{ctx | globals: Map.merge(ctx.globals, p)}) + end + + run(pc + 1, frame, [source, target | rest], gas, ctx) + end + + defp run( + {@op_get_super, []}, + pc, + frame, + [func | rest], + gas, + %Context{home_object: home_object, super: super} = ctx + ) do + val = if func == home_object, do: super, else: Class.get_super(func) + run(pc + 1, frame, [val | rest], gas, ctx) + end + + defp run({@op_push_this, []}, _pc, frame, _stack, gas, %Context{this: this} = ctx) + when this == :uninitialized or + (is_tuple(this) and tuple_size(this) == 2 and elem(this, 0) == :uninitialized) do + throw_or_catch( + frame, + Heap.make_error("this is not initialized", "ReferenceError"), + gas, + ctx + ) + end + + defp run({@op_push_this, []}, pc, frame, stack, gas, %Context{this: this} = ctx) + when this == :undefined or this == nil do + global_this = Map.get(ctx.globals, "globalThis", :undefined) + run(pc + 1, frame, [global_this | stack], gas, ctx) + end + + defp run({@op_push_this, []}, pc, frame, stack, gas, %Context{this: this} = ctx) do + run(pc + 1, frame, [this | stack], gas, ctx) + end + + defp run({@op_private_symbol, [atom_idx]}, pc, frame, stack, gas, ctx) do + name = Names.resolve_atom(ctx, atom_idx) + run(pc + 1, frame, [Private.private_symbol(name) | stack], gas, ctx) + end + + # ── Argument mutation ── + + defp run({op, [idx]}, pc, frame, [val | rest], gas, %Context{} = ctx) + when op in [@op_put_arg, @op_put_arg0, @op_put_arg1, @op_put_arg2, @op_put_arg3] do + run_arg_update(pc, frame, rest, gas, ctx, idx, val) + end + + defp run({op, [idx]}, pc, frame, [val | rest], gas, %Context{} = ctx) + when op in [@op_set_arg, @op_set_arg0, @op_set_arg1, @op_set_arg2, @op_set_arg3] do + run_arg_update(pc, frame, [val | rest], gas, ctx, idx, val) + end + + # ── instanceof ── + + defp run({@op_instanceof, []}, pc, frame, [ctor, obj | rest], gas, ctx) do + catch_and_dispatch( + pc, + frame, + rest, + gas, + ctx, + fn -> + has_instance = Get.get(ctor, {:symbol, "Symbol.hasInstance"}) + + if has_instance != :undefined and has_instance != nil and + function_value?(has_instance) do + result = + Invocation.invoke_with_receiver(has_instance, [obj], Runtime.gas_budget(), ctor) + + Values.truthy?(result) + else + is_obj = function_value?(ctor) or is_object(ctor) + + unless is_obj do + throw( + {:js_throw, + Heap.make_error("Right-hand side of instanceof is not callable", "TypeError")} + ) + end + + is_callable_ctor = + case ctor do + {:builtin, _, map} when is_map(map) -> false + {:obj, ref} -> Get.get({:obj, ref}, "call") != :undefined + _ -> true + end + + unless is_callable_ctor do + throw( + {:js_throw, + Heap.make_error("Right-hand side of instanceof is not callable", "TypeError")} + ) + end + + obj_is_object = is_object(obj) or function_value?(obj) + + if obj_is_object do + ctor_proto = Get.get(ctor, "prototype") + + case ctor_proto do + {:obj, _} -> + case obj do + {:obj, ref} -> + ctor_name = + case ctor do + {:builtin, n, _} -> n + _ -> nil + end + + if ctor_name in ["Array", "Object"] do + data = Heap.get_obj(ref) + is_arr = match?({:qb_arr, _}, data) or is_list(data) + + if (is_arr and ctor_name == "Array") or ctor_name == "Object", + do: true, + else: check_prototype_chain(obj, ctor_proto) + else + check_prototype_chain(obj, ctor_proto) + end + + _ -> + is_fn = function_value?(obj) + + if is_fn do + ctor_name = + case ctor do + {:builtin, name, _} -> name + _ -> nil + end + + ctor_name == "Function" or ctor_name == "Object" + else + false + end + end + + _ -> + if is_object(ctor) do + throw( + {:js_throw, + Heap.make_error( + "Right-hand side of instanceof is not callable", + "TypeError" + )} + ) + else + throw( + {:js_throw, + Heap.make_error( + "Function has non-object prototype '#{Values.stringify(ctor_proto)}' in instanceof check", + "TypeError" + )} + ) + end + end + else + false + end + end + end, + true + ) + end + + # ── delete ── + + defp run({@op_delete, []}, __pc, frame, [key, obj | _rest], gas, ctx) + when obj == nil or obj == :undefined do + nullish = if obj == nil, do: "null", else: "undefined" + + error = + Heap.make_error( + "Cannot delete properties of #{nullish} (deleting '#{Values.stringify(key)}')", + "TypeError" + ) + + throw_or_catch(frame, error, gas, ctx) + end + + defp run({@op_delete, []}, pc, frame, [key, obj | rest], gas, ctx) do + result = + case obj do + {:obj, ref} -> + map = Heap.get_obj(ref, %{}) + + if is_map(map) do + desc = Heap.get_prop_desc(ref, key) + + if match?(%{configurable: false}, desc) do + false + else + new_map = Map.delete(map, key) + Heap.put_obj(ref, new_map) + true + end + else + key_str = if is_binary(key), do: key, else: Values.stringify(key) + + cond do + key_str == "length" -> + false + + match?({:qb_arr, _}, map) or is_list(map) -> + case Integer.parse(key_str) do + {idx, ""} when idx >= 0 -> + Heap.array_set(ref, idx, :undefined) + true + + _ -> + true + end + + true -> + true + end + end + + {:closure, _, _} = fun -> + delete_static(fun, key) + + %Bytecode.Function{} = fun -> + delete_static(fun, key) + + {:builtin, _, _} = fun -> + delete_static(fun, key) + + _ -> + true + end + + run(pc + 1, frame, [result | rest], gas, ctx) + end + + @non_configurable_globals MapSet.new(~w(NaN undefined Infinity globalThis)) + + defp run({@op_delete_var, [atom_idx]}, pc, frame, stack, gas, ctx) do + name = Names.resolve_atom(ctx.atoms, atom_idx) + builtins = Heap.get_builtin_names() || MapSet.new() + + result = + case Map.fetch(ctx.globals, name) do + {:ok, _} -> + if MapSet.member?(@non_configurable_globals, name) do + false + else + MapSet.member?(builtins, name) + end + + :error -> + true + end + + run(pc + 1, frame, [result | stack], gas, ctx) + end + + # ── in operator ── + + defp run({@op_in, []}, pc, frame, [obj, key | rest], gas, ctx) do + catch_and_dispatch( + pc, + frame, + rest, + gas, + ctx, + fn -> + unless is_object(obj) or match?({:builtin, _, _}, obj) or + is_closure(obj) or match?(%Bytecode.Function{}, obj) or + match?({:bound, _, _, _, _}, obj) or match?({:qb_arr, _}, obj) or + is_list(obj) or is_map(obj) do + throw( + {:js_throw, + Heap.make_error( + "Cannot use 'in' operator to search for '#{Values.stringify(key)}' in #{Values.stringify(obj)}", + "TypeError" + )} + ) + end + + coerced_key = + if is_binary(key) or is_integer(key), do: key, else: Values.stringify(key) + + Put.has_property(obj, coerced_key) + end, + false + ) + end + + # ── regexp literal ── + + defp run({@op_regexp, []}, pc, frame, [pattern, flags | rest], gas, ctx) do + run(pc + 1, frame, [{:regexp, pattern, flags} | rest], gas, ctx) + end + + # ── Object spread (copy_data_properties with mask) ── + + defp run({@op_copy_data_properties, [mask]}, pc, frame, stack, gas, ctx) do + target_idx = mask &&& 3 + source_idx = bsr(mask, 2) &&& 7 + exclude_idx = bsr(mask, 5) &&& 7 + target = Enum.at(stack, target_idx) + source = Enum.at(stack, source_idx) + exclude = Enum.at(stack, exclude_idx) + + try do + Copy.copy_data_properties(target, source, exclude) + + ctx = + case Heap.get_persistent_globals() do + nil -> ctx + p when map_size(p) == 0 -> ctx + p -> Context.mark_dirty(%{ctx | globals: Map.merge(ctx.globals, p)}) + end + + run(pc + 1, frame, stack, gas, ctx) + catch + {:js_throw, error} -> + ctx = Heap.get_ctx() || ctx + throw_or_catch(frame, error, gas, ctx) + end + end + end + end +end diff --git a/lib/quickbeam/vm/interpreter/ops/stack.ex b/lib/quickbeam/vm/interpreter/ops/stack.ex new file mode 100644 index 000000000..698956a8e --- /dev/null +++ b/lib/quickbeam/vm/interpreter/ops/stack.ex @@ -0,0 +1,120 @@ +defmodule QuickBEAM.VM.Interpreter.Ops.Stack do + @moduledoc "Stack manipulation and constant-push opcodes." + + @doc "Installs the Stack manipulation and constant-push opcodes helpers into the caller module." + defmacro __using__(_opts) do + quote location: :keep do + alias QuickBEAM.VM.Interpreter.Frame + alias QuickBEAM.VM.Names + # ── Push constants ── + + defp run({op, [val]}, pc, frame, stack, gas, ctx) + when op in [ + @op_push_i32, + @op_push_i8, + @op_push_i16, + @op_push_minus1, + @op_push_0, + @op_push_1, + @op_push_2, + @op_push_3, + @op_push_4, + @op_push_5, + @op_push_6, + @op_push_7 + ], + do: run(pc + 1, frame, [val | stack], gas, ctx) + + defp run({op, [idx]}, pc, frame, stack, gas, ctx) + when op in [@op_push_const, @op_push_const8] do + val = Names.resolve_const(elem(frame, Frame.constants()), idx) + val = materialize_constant(val) + run(pc + 1, frame, [val | stack], gas, ctx) + end + + defp run({@op_push_atom_value, [atom_idx]}, pc, frame, stack, gas, ctx) do + run(pc + 1, frame, [Names.resolve_atom(ctx, atom_idx) | stack], gas, ctx) + end + + defp run({@op_undefined, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, [:undefined | stack], gas, ctx) + + defp run({@op_null, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, [nil | stack], gas, ctx) + + defp run({@op_push_false, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, [false | stack], gas, ctx) + + defp run({@op_push_true, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, [true | stack], gas, ctx) + + defp run({@op_push_empty_string, []}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, ["" | stack], gas, ctx) + + defp run({@op_push_bigint_i32, [val]}, pc, frame, stack, gas, ctx), + do: run(pc + 1, frame, [{:bigint, val} | stack], gas, ctx) + + # ── Stack manipulation ── + + defp run({@op_drop, []}, pc, frame, [_ | rest], gas, ctx), + do: run(pc + 1, frame, rest, gas, ctx) + + defp run({@op_nip, []}, pc, frame, [a, _b | rest], gas, ctx), + do: run(pc + 1, frame, [a | rest], gas, ctx) + + defp run({@op_nip1, []}, pc, frame, [a, b, _c | rest], gas, ctx), + do: run(pc + 1, frame, [a, b | rest], gas, ctx) + + defp run({@op_dup, []}, pc, frame, [a | _] = stack, gas, ctx), + do: run(pc + 1, frame, [a | stack], gas, ctx) + + defp run({@op_dup1, []}, pc, frame, [a, b | _] = stack, gas, ctx) do + run(pc + 1, frame, [a, b | stack], gas, ctx) + end + + defp run({@op_dup2, []}, pc, frame, [a, b | _rest] = stack, gas, ctx) do + run(pc + 1, frame, [a, b | stack], gas, ctx) + end + + defp run({@op_dup3, []}, pc, frame, [a, b, c | _rest] = stack, gas, ctx) do + run(pc + 1, frame, [a, b, c | stack], gas, ctx) + end + + defp run({@op_insert2, []}, pc, frame, [a, b | rest], gas, ctx), + do: run(pc + 1, frame, [a, b, a | rest], gas, ctx) + + defp run({@op_insert3, []}, pc, frame, [a, b, c | rest], gas, ctx), + do: run(pc + 1, frame, [a, b, c, a | rest], gas, ctx) + + defp run({@op_insert4, []}, pc, frame, [a, b, c, d | rest], gas, ctx), + do: run(pc + 1, frame, [a, b, c, d, a | rest], gas, ctx) + + defp run({@op_perm3, []}, pc, frame, [a, b, c | rest], gas, ctx), + do: run(pc + 1, frame, [a, c, b | rest], gas, ctx) + + defp run({@op_perm4, []}, pc, frame, [a, b, c, d | rest], gas, ctx), + do: run(pc + 1, frame, [a, c, d, b | rest], gas, ctx) + + defp run({@op_perm5, []}, pc, frame, [a, b, c, d, e | rest], gas, ctx), + do: run(pc + 1, frame, [a, c, d, e, b | rest], gas, ctx) + + defp run({@op_swap, []}, pc, frame, [a, b | rest], gas, ctx), + do: run(pc + 1, frame, [b, a | rest], gas, ctx) + + defp run({@op_swap2, []}, pc, frame, [a, b, c, d | rest], gas, ctx), + do: run(pc + 1, frame, [c, d, a, b | rest], gas, ctx) + + defp run({@op_rot3l, []}, pc, frame, [a, b, c | rest], gas, ctx), + do: run(pc + 1, frame, [c, a, b | rest], gas, ctx) + + defp run({@op_rot3r, []}, pc, frame, [a, b, c | rest], gas, ctx), + do: run(pc + 1, frame, [b, c, a | rest], gas, ctx) + + defp run({@op_rot4l, []}, pc, frame, [a, b, c, d | rest], gas, ctx), + do: run(pc + 1, frame, [d, a, b, c | rest], gas, ctx) + + defp run({@op_rot5l, []}, pc, frame, [a, b, c, d, e | rest], gas, ctx), + do: run(pc + 1, frame, [e, a, b, c, d | rest], gas, ctx) + end + end +end diff --git a/lib/quickbeam/vm/interpreter/setup.ex b/lib/quickbeam/vm/interpreter/setup.ex new file mode 100644 index 000000000..8f49b8829 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/setup.ex @@ -0,0 +1,40 @@ +defmodule QuickBEAM.VM.Interpreter.Setup do + @moduledoc "Builds interpreter contexts and stores bytecode atom tables before execution." + + alias QuickBEAM.VM.{Bytecode, Heap, Runtime} + alias QuickBEAM.VM.Interpreter.Context + alias QuickBEAM.VM.Invocation.Context, as: InvokeContext + + @doc "Builds the interpreter context used for evaluating decoded bytecode." + def build_eval_context(opts, atoms, gas) do + base_globals = Runtime.global_bindings() + persistent = Heap.get_persistent_globals() |> Map.drop(Map.keys(base_globals)) + + %Context{ + atoms: atoms, + gas: gas, + globals: + base_globals + |> Map.merge(persistent) + |> Map.merge(Map.get(opts, :globals, %{})), + runtime_pid: Map.get(opts, :runtime_pid), + this: Map.get(opts, :this) || Map.get(base_globals, "globalThis", :undefined), + arg_buf: Map.get(opts, :arg_buf, {}), + current_func: Map.get(opts, :current_func, :undefined), + new_target: Map.get(opts, :new_target, :undefined), + trace_enabled: Map.get(opts, :trace_enabled, true) + } + |> InvokeContext.attach_method_state() + end + + @doc "Stores atom tables for a function and all nested functions." + def store_function_atoms(%Bytecode.Function{} = fun, atoms) do + Heap.put_fn_atoms(fun.byte_code, atoms) + + for %Bytecode.Function{} = inner <- fun.constants do + store_function_atoms(inner, atoms) + end + + :ok + end +end diff --git a/lib/quickbeam/vm/interpreter/values.ex b/lib/quickbeam/vm/interpreter/values.ex new file mode 100644 index 000000000..38c6b212f --- /dev/null +++ b/lib/quickbeam/vm/interpreter/values.ex @@ -0,0 +1,205 @@ +defmodule QuickBEAM.VM.Interpreter.Values do + @moduledoc "JS type coercion, arithmetic, comparison, and equality operations." + + alias QuickBEAM.VM.{Bytecode, Heap} + alias QuickBEAM.VM.Interpreter.Values.{Arithmetic, Bitwise, Coercion, Comparison, Equality} + + import QuickBEAM.VM.Value, only: [is_object: 1] + + @compile {:inline, + truthy?: 1, + falsy?: 1, + to_int32: 1, + strict_eq: 2, + add: 2, + sub: 2, + mul: 2, + neg: 1, + typeof: 1, + to_number: 1, + stringify: 1, + lt: 2, + lte: 2, + gt: 2, + gte: 2, + eq: 2, + neq: 2, + band: 2, + bor: 2, + bxor: 2, + shl: 2, + sar: 2, + shr: 2} + + alias QuickBEAM.VM.Bytecode + + # --- Truthiness --- + + @doc "Returns JavaScript truthiness for a VM value." + def truthy?(nil), do: false + def truthy?(:undefined), do: false + def truthy?(false), do: false + def truthy?(0), do: false + def truthy?(+0.0), do: false + def truthy?(-0.0), do: false + def truthy?(:nan), do: false + def truthy?(""), do: false + def truthy?({:bigint, 0}), do: false + def truthy?({:bigint, _}), do: true + def truthy?(_), do: true + + @doc "Returns the inverse of JavaScript truthiness for a VM value." + def falsy?(val), do: not truthy?(val) + + # --- Type query --- + + @doc "Implements the JavaScript `typeof` operator for VM values." + def typeof(:undefined), do: "undefined" + def typeof(:nan), do: "number" + def typeof(:infinity), do: "number" + def typeof(:neg_infinity), do: "number" + def typeof(nil), do: "object" + def typeof(true), do: "boolean" + def typeof(false), do: "boolean" + def typeof(val) when is_number(val), do: "number" + def typeof(val) when is_binary(val), do: "string" + def typeof(%Bytecode.Function{}), do: "function" + def typeof({:closure, _, %Bytecode.Function{}}), do: "function" + def typeof({:symbol, _}), do: "symbol" + def typeof({:symbol, _, _}), do: "symbol" + def typeof({:bound, _, _, _, _}), do: "function" + def typeof({:bigint, _}), do: "bigint" + def typeof({:builtin, _, map}) when is_map(map), do: "object" + def typeof({:builtin, _, _}), do: "function" + + def typeof({:obj, ref}) do + case Heap.get_obj(ref) do + %{"__proxy_target__" => target} -> typeof(target) + _ -> "object" + end + end + + def typeof(_), do: "object" + + # --- Hot coercion (kept inline) --- + + @doc "Coerces a VM value using JavaScript ToNumber semantics." + def to_number(val) when is_number(val), do: val + def to_number(true), do: 1 + def to_number(false), do: 0 + def to_number(nil), do: 0 + def to_number(:undefined), do: :nan + def to_number(:infinity), do: :infinity + def to_number(:neg_infinity), do: :neg_infinity + def to_number(:nan), do: :nan + def to_number(s) when is_binary(s), do: Coercion.parse_numeric(String.trim(s)) + + def to_number({:bigint, _}), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a BigInt value to a number", "TypeError")} + ) + + def to_number({:obj, _} = obj) do + prim = Coercion.to_primitive(obj) + if is_object(prim), do: :nan, else: to_number(prim) + end + + def to_number({:symbol, _}), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def to_number({:symbol, _, _}), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def to_number({:closure, _, _} = f), do: to_number(Coercion.fn_to_primitive(f)) + def to_number(%Bytecode.Function{} = f), do: to_number(Coercion.fn_to_primitive(f)) + def to_number({:bound, _, _, _, _} = f), do: to_number(Coercion.fn_to_primitive(f)) + def to_number({:builtin, _, _} = f), do: to_number(Coercion.fn_to_primitive(f)) + def to_number(_), do: :nan + + @doc "Coerces a VM value using JavaScript ToInt32 semantics." + def to_int32(val), do: Coercion.to_int32(val) + @doc "Coerces a VM value using JavaScript ToUint32 semantics." + def to_uint32(val), do: Coercion.to_uint32(val) + + # --- Hot stringify (kept inline) --- + + @doc "Coerces a VM value to a JavaScript string." + def stringify(:undefined), do: "undefined" + def stringify(nil), do: "null" + def stringify(true), do: "true" + def stringify(false), do: "false" + def stringify(:nan), do: "NaN" + def stringify(:infinity), do: "Infinity" + def stringify(:neg_infinity), do: "-Infinity" + def stringify(n) when is_integer(n), do: Integer.to_string(n) + def stringify(n) when is_float(n) and n == 0.0, do: "0" + def stringify(s) when is_binary(s), do: s + def stringify(val), do: Coercion.to_string_val(val) + + # --- Arithmetic (delegated) --- + + @doc "Applies JavaScript addition semantics." + defdelegate add(a, b), to: Arithmetic + @doc "Applies JavaScript subtraction semantics." + defdelegate sub(a, b), to: Arithmetic + @doc "Applies JavaScript multiplication semantics." + defdelegate mul(a, b), to: Arithmetic + @doc "Applies JavaScript division semantics." + defdelegate js_div(a, b), to: Arithmetic + @doc "Applies JavaScript remainder semantics." + defdelegate mod(a, b), to: Arithmetic + @doc "Applies JavaScript exponentiation semantics." + defdelegate pow(a, b), to: Arithmetic + @doc "Applies JavaScript unary negation semantics." + defdelegate neg(a), to: Arithmetic + @doc "Compatibility wrapper for JavaScript division semantics." + def div(a, b), do: Arithmetic.js_div(a, b) + + # --- Comparisons (delegated) --- + + @doc "Applies JavaScript less-than comparison semantics." + defdelegate lt(a, b), to: Comparison + @doc "Applies JavaScript less-than-or-equal comparison semantics." + defdelegate lte(a, b), to: Comparison + @doc "Applies JavaScript greater-than comparison semantics." + defdelegate gt(a, b), to: Comparison + @doc "Applies JavaScript greater-than-or-equal comparison semantics." + defdelegate gte(a, b), to: Comparison + + # --- Equality (delegated) --- + + @doc "Applies JavaScript strict equality semantics." + defdelegate strict_eq(a, b), to: Equality + @doc "Applies JavaScript abstract equality semantics." + defdelegate eq(a, b), to: Equality + @doc "Applies JavaScript abstract inequality semantics." + defdelegate neq(a, b), to: Equality + @doc "Applies the core JavaScript abstract equality algorithm." + defdelegate abstract_eq(a, b), to: Equality + + # --- Bitwise (delegated) --- + + @doc "Applies JavaScript bitwise AND semantics." + defdelegate band(a, b), to: Bitwise + @doc "Applies JavaScript bitwise OR semantics." + defdelegate bor(a, b), to: Bitwise + @doc "Applies JavaScript bitwise XOR semantics." + defdelegate bxor(a, b), to: Bitwise + @doc "Applies JavaScript bitwise NOT semantics." + defdelegate bnot(a), to: Bitwise + @doc "Applies JavaScript left-shift semantics." + defdelegate shl(a, b), to: Bitwise + @doc "Applies JavaScript signed right-shift semantics." + defdelegate sar(a, b), to: Bitwise + @doc "Applies JavaScript unsigned right-shift semantics." + defdelegate shr(a, b), to: Bitwise + @doc "Returns whether a numeric value is JavaScript negative zero." + defdelegate neg_zero?(val), to: Arithmetic +end diff --git a/lib/quickbeam/vm/interpreter/values/arithmetic.ex b/lib/quickbeam/vm/interpreter/values/arithmetic.ex new file mode 100644 index 000000000..563e40b08 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/values/arithmetic.ex @@ -0,0 +1,329 @@ +defmodule QuickBEAM.VM.Interpreter.Values.Arithmetic do + @moduledoc "JS arithmetic operations: add, sub, mul, js_div, mod, pow, neg, and overflow helpers." + + import QuickBEAM.VM.Value, only: [is_object: 1] + + alias QuickBEAM.VM.{Bytecode, Heap, JSThrow} + alias QuickBEAM.VM.Interpreter.Values.Coercion + + @doc "Applies JavaScript addition semantics including string concatenation and BigInt checks." + def add({:bigint, a}, {:bigint, b}), do: {:bigint, a + b} + + def add({:symbol, _}, _), + do: + throw( + {:js_throw, + Heap.make_error( + "Cannot convert a Symbol value to a string", + "TypeError" + )} + ) + + def add(_, {:symbol, _}), + do: + throw( + {:js_throw, + Heap.make_error( + "Cannot convert a Symbol value to a string", + "TypeError" + )} + ) + + def add({:symbol, _, _}, _), + do: + throw( + {:js_throw, + Heap.make_error( + "Cannot convert a Symbol value to a string", + "TypeError" + )} + ) + + def add(_, {:symbol, _, _}), + do: + throw( + {:js_throw, + Heap.make_error( + "Cannot convert a Symbol value to a string", + "TypeError" + )} + ) + + def add(a, b) when is_binary(a) and is_binary(b), do: a <> b + def add(a, b) when is_binary(a) and is_number(b), do: a <> Coercion.to_string_val(b) + def add(a, b) when is_number(a) and is_binary(b), do: Coercion.to_string_val(a) <> b + + def add(a, b) when is_binary(b) and not is_tuple(a) and not is_map(a), + do: Coercion.to_string_val(a) <> b + + def add(a, b) when is_binary(a) and not is_tuple(b) and not is_map(b), + do: a <> Coercion.to_string_val(b) + + def add(a, b) when is_number(a) and is_number(b), do: safe_add(a, b) + + def add({:obj, _} = a, b) do + pa = Coercion.to_primitive(a) + pb = if is_object(b), do: Coercion.to_primitive(b), else: b + + if is_object(pa) or is_object(pb) do + Coercion.to_string_val(pa) <> Coercion.to_string_val(pb) + else + add(pa, pb) + end + end + + def add(a, {:obj, _} = b) do + pb = Coercion.to_primitive(b) + + if is_object(pb) do + Coercion.to_string_val(a) <> Coercion.to_string_val(pb) + else + add(a, pb) + end + end + + def add({:bigint, _} = a, b) when is_binary(b), do: Coercion.to_string_val(a) <> b + def add(a, {:bigint, _} = b) when is_binary(a), do: a <> Coercion.to_string_val(b) + def add({:bigint, _}, _), do: throw_bigint_mix_error() + def add(_, {:bigint, _}), do: throw_bigint_mix_error() + def add({:closure, _, _} = a, b), do: add(Coercion.fn_to_primitive(a), b) + def add(a, {:closure, _, _} = b), do: add(a, Coercion.fn_to_primitive(b)) + def add(%Bytecode.Function{} = a, b), do: add(Coercion.fn_to_primitive(a), b) + def add(a, %Bytecode.Function{} = b), do: add(a, Coercion.fn_to_primitive(b)) + def add({:bound, _, _, _, _} = a, b), do: add(Coercion.fn_to_primitive(a), b) + def add(a, {:bound, _, _, _, _} = b), do: add(a, Coercion.fn_to_primitive(b)) + def add({:builtin, _, _} = a, b), do: add(Coercion.fn_to_primitive(a), b) + def add(a, {:builtin, _, _} = b), do: add(a, Coercion.fn_to_primitive(b)) + def add(a, b), do: numeric_add(Coercion.to_number(a), Coercion.to_number(b)) + + defp numeric_add(a, b) when is_number(a) and is_number(b), do: safe_add(a, b) + defp numeric_add(:nan, _), do: :nan + defp numeric_add(_, :nan), do: :nan + defp numeric_add(:infinity, :neg_infinity), do: :nan + defp numeric_add(:neg_infinity, :infinity), do: :nan + defp numeric_add(:infinity, _), do: :infinity + defp numeric_add(:neg_infinity, _), do: :neg_infinity + defp numeric_add(_, :infinity), do: :infinity + defp numeric_add(_, :neg_infinity), do: :neg_infinity + defp numeric_add(_, _), do: :nan + + @doc "Applies JavaScript subtraction semantics." + def sub({:bigint, a}, {:bigint, b}), do: {:bigint, a - b} + def sub({:bigint, _}, b) when is_number(b), do: throw_bigint_mix_error() + def sub(a, {:bigint, _}) when is_number(a), do: throw_bigint_mix_error() + def sub({:obj, _} = a, b), do: sub(Coercion.to_numeric(a), b) + def sub(a, {:obj, _} = b), do: sub(a, Coercion.to_numeric(b)) + def sub({:bigint, _}, _), do: throw_bigint_mix_error() + def sub(_, {:bigint, _}), do: throw_bigint_mix_error() + + def sub(a, b) when is_number(a) and is_number(b) do + result = safe_add(a, -b) + if result == 0 and neg_sign?(a) and not neg_sign?(b), do: -0.0, else: result + end + + def sub(a, b), do: numeric_add(Coercion.to_number(a), neg(Coercion.to_number(b))) + + @doc "Applies JavaScript multiplication semantics." + def mul({:bigint, a}, {:bigint, b}), do: {:bigint, a * b} + def mul({:bigint, _}, b) when is_number(b), do: throw_bigint_mix_error() + def mul(a, {:bigint, _}) when is_number(a), do: throw_bigint_mix_error() + def mul({:obj, _} = a, b), do: mul(Coercion.to_numeric(a), b) + def mul(a, {:obj, _} = b), do: mul(a, Coercion.to_numeric(b)) + def mul({:bigint, _}, _), do: throw_bigint_mix_error() + def mul(_, {:bigint, _}), do: throw_bigint_mix_error() + def mul(a, b) when is_number(a) and is_number(b), do: safe_mul(a, b) + + def mul(a, b) do + na = Coercion.to_number(a) + nb = Coercion.to_number(b) + + cond do + na == :nan or nb == :nan -> + :nan + + na in [:infinity, :neg_infinity] or nb in [:infinity, :neg_infinity] -> + if na == 0 or nb == 0, do: :nan, else: mul_inf_sign(na, nb) + + is_number(na) and is_number(nb) -> + na * nb + + true -> + :nan + end + end + + defp mul_inf_sign(a, b) do + sign_a = if a == :neg_infinity or (is_number(a) and a < 0), do: -1, else: 1 + sign_b = if b == :neg_infinity or (is_number(b) and b < 0), do: -1, else: 1 + if sign_a * sign_b > 0, do: :infinity, else: :neg_infinity + end + + @doc "Applies JavaScript division semantics." + def js_div({:bigint, a}, {:bigint, b}) when b != 0, do: {:bigint, Kernel.div(a, b)} + + def js_div({:bigint, _}, {:bigint, 0}), + do: JSThrow.range_error!("Division by zero") + + def js_div({:bigint, _}, b) when is_number(b), do: throw_bigint_mix_error() + def js_div(a, {:bigint, _}) when is_number(a), do: throw_bigint_mix_error() + def js_div({:obj, _} = a, b), do: js_div(Coercion.to_numeric(a), b) + def js_div(a, {:obj, _} = b), do: js_div(a, Coercion.to_numeric(b)) + def js_div({:bigint, _}, _), do: throw_bigint_mix_error() + def js_div(_, {:bigint, _}), do: throw_bigint_mix_error() + def js_div(a, b) when is_number(a) and is_number(b), do: div_numbers(a, b) + + def js_div(a, b) do + na = Coercion.to_number(a) + nb = Coercion.to_number(b) + + cond do + na == :nan or nb == :nan -> + :nan + + na in [:infinity, :neg_infinity] or nb in [:infinity, :neg_infinity] -> + div_inf(na, nb) + + is_number(na) and is_number(nb) -> + div_numbers(na, nb) + + true -> + :nan + end + end + + defp div_inf(:infinity, :infinity), do: :nan + defp div_inf(:infinity, :neg_infinity), do: :nan + defp div_inf(:neg_infinity, :infinity), do: :nan + defp div_inf(:neg_infinity, :neg_infinity), do: :nan + + defp div_inf(:infinity, n) when is_number(n), + do: if(neg_sign?(n), do: :neg_infinity, else: :infinity) + + defp div_inf(:neg_infinity, n) when is_number(n), + do: if(neg_sign?(n), do: :infinity, else: :neg_infinity) + + defp div_inf(n, :infinity) when is_number(n), do: if(n < 0, do: -0.0, else: 0.0) + defp div_inf(n, :neg_infinity) when is_number(n), do: if(n < 0, do: 0.0, else: -0.0) + defp div_inf(_, _), do: :nan + + defp div_numbers(a, b) when b == 0, + do: if(neg_zero?(b), do: div_by_neg_zero(a), else: inf_or_nan(a)) + + defp div_numbers(a, b) do + try do + a / b + rescue + ArithmeticError -> + if (a > 0 and b > 0) or (a < 0 and b < 0), do: :infinity, else: :neg_infinity + end + end + + defp div_by_neg_zero(a) when a > 0, do: :neg_infinity + defp div_by_neg_zero(a) when a < 0, do: :infinity + defp div_by_neg_zero(_), do: :nan + + @doc "Applies JavaScript remainder semantics." + def mod({:bigint, a}, {:bigint, b}) when b != 0, do: {:bigint, rem(a, b)} + + def mod({:bigint, _}, {:bigint, 0}), + do: JSThrow.range_error!("Division by zero") + + def mod({:bigint, _}, b) when is_number(b), do: throw_bigint_mix_error() + def mod(a, {:bigint, _}) when is_number(a), do: throw_bigint_mix_error() + def mod({:obj, _} = a, b), do: mod(Coercion.to_numeric(a), b) + def mod(a, {:obj, _} = b), do: mod(a, Coercion.to_numeric(b)) + def mod({:bigint, _}, _), do: throw_bigint_mix_error() + def mod(_, {:bigint, _}), do: throw_bigint_mix_error() + + def mod(a, b) when is_integer(a) and is_integer(b) and b != 0 do + case rem(a, b) do + 0 when a < 0 -> -0.0 + r -> r + end + end + + def mod(a, b) when is_number(a) and is_number(b) and b != 0 do + result = :math.fmod(a / 1, b / 1) + if result == 0 and neg_sign?(a), do: -0.0, else: result + end + + def mod(a, b) when is_number(a) and is_number(b), do: :nan + def mod(a, b), do: numeric_mod(Coercion.to_number(a), Coercion.to_number(b)) + + defp numeric_mod(:nan, _), do: :nan + defp numeric_mod(_, :nan), do: :nan + defp numeric_mod(:infinity, _), do: :nan + defp numeric_mod(:neg_infinity, _), do: :nan + defp numeric_mod(a, :infinity) when is_number(a), do: a + defp numeric_mod(a, :neg_infinity) when is_number(a), do: a + defp numeric_mod(_, b) when is_number(b) and b == 0, do: :nan + defp numeric_mod(a, b) when is_integer(a) and is_integer(b), do: rem(a, b) + + defp numeric_mod(a, b) when is_number(a) and is_number(b) do + try do + a - Float.floor(a / b) * b + rescue + ArithmeticError -> :nan + end + end + + defp numeric_mod(_, _), do: :nan + + @doc "Applies JavaScript exponentiation semantics." + def pow({:bigint, a}, {:bigint, b}) when b >= 0, do: {:bigint, Integer.pow(a, b)} + def pow(a, b) when is_number(a) and is_number(b), do: :math.pow(a, b) + def pow(_, _), do: :nan + + @doc "Applies JavaScript unary negation semantics." + def neg({:bigint, a}), do: {:bigint, -a} + def neg(0), do: -0.0 + def neg(:infinity), do: :neg_infinity + def neg(:neg_infinity), do: :infinity + def neg(:nan), do: :nan + def neg(a) when is_number(a), do: -a + + def neg({:obj, _} = a) do + case Coercion.to_primitive(a) do + {:bigint, _} = b -> neg(b) + other -> neg(Coercion.to_number(other)) + end + end + + def neg(a), do: neg(Coercion.to_number(a)) + + @doc "Adds numbers while preserving JavaScript infinity and NaN sentinels." + def safe_add(a, b) do + try do + a + b + rescue + ArithmeticError -> + if a > 0 or b > 0, do: :infinity, else: :neg_infinity + end + end + + @doc "Multiplies numbers while preserving JavaScript infinity and NaN sentinels." + def safe_mul(a, b) do + try do + a * b + rescue + ArithmeticError -> + if (a > 0 and b > 0) or (a < 0 and b < 0), do: :infinity, else: :neg_infinity + end + end + + @doc "Returns whether a float is JavaScript negative zero." + def neg_zero?(b), do: is_float(b) and b == 0.0 and hd(:erlang.float_to_list(b)) == ?- + + defp neg_sign?(n), do: n < 0 or neg_zero?(n) + + defp inf_or_nan(a) when a > 0, do: :infinity + defp inf_or_nan(a) when a < 0, do: :neg_infinity + defp inf_or_nan(_), do: :nan + + defp throw_bigint_mix_error do + throw( + {:js_throw, + Heap.make_error("Cannot mix BigInt and other types, use explicit conversions", "TypeError")} + ) + end +end diff --git a/lib/quickbeam/vm/interpreter/values/bitwise.ex b/lib/quickbeam/vm/interpreter/values/bitwise.ex new file mode 100644 index 000000000..349906414 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/values/bitwise.ex @@ -0,0 +1,92 @@ +defmodule QuickBEAM.VM.Interpreter.Values.Bitwise do + @moduledoc "JS bitwise operations: band, bor, bxor, bnot, shl, sar, shr." + + import Bitwise, except: [band: 2, bor: 2, bxor: 2, bnot: 1] + + alias QuickBEAM.VM.{Heap, JSThrow} + alias QuickBEAM.VM.Interpreter.Values.Coercion + + @doc "Applies JavaScript bitwise AND semantics." + def band({:bigint, a}, {:bigint, b}), do: {:bigint, Bitwise.band(a, b)} + def band({:obj, _} = a, b), do: band(Coercion.to_numeric(a), b) + def band(a, {:obj, _} = b), do: band(a, Coercion.to_numeric(b)) + def band({:bigint, _}, _), do: throw_bigint_mix_error() + def band(_, {:bigint, _}), do: throw_bigint_mix_error() + def band(a, b), do: Bitwise.band(Coercion.to_int32(a), Coercion.to_int32(b)) + + @doc "Applies JavaScript bitwise OR semantics." + def bor({:bigint, a}, {:bigint, b}), do: {:bigint, Bitwise.bor(a, b)} + def bor({:obj, _} = a, b), do: bor(Coercion.to_numeric(a), b) + def bor(a, {:obj, _} = b), do: bor(a, Coercion.to_numeric(b)) + def bor({:bigint, _}, _), do: throw_bigint_mix_error() + def bor(_, {:bigint, _}), do: throw_bigint_mix_error() + def bor(a, b), do: Bitwise.bor(Coercion.to_int32(a), Coercion.to_int32(b)) + + @doc "Applies JavaScript bitwise XOR semantics." + def bxor({:bigint, a}, {:bigint, b}), do: {:bigint, Bitwise.bxor(a, b)} + def bxor({:obj, _} = a, b), do: bxor(Coercion.to_numeric(a), b) + def bxor(a, {:obj, _} = b), do: bxor(a, Coercion.to_numeric(b)) + def bxor({:bigint, _}, _), do: throw_bigint_mix_error() + def bxor(_, {:bigint, _}), do: throw_bigint_mix_error() + def bxor(a, b), do: Bitwise.bxor(Coercion.to_int32(a), Coercion.to_int32(b)) + + @doc "Applies JavaScript bitwise NOT semantics." + def bnot({:bigint, a}), do: {:bigint, -(a + 1)} + def bnot({:obj, _} = a), do: bnot(Coercion.to_numeric(a)) + def bnot(a), do: Coercion.to_int32(Bitwise.bnot(Coercion.to_int32(a))) + + @doc "Applies JavaScript left-shift semantics." + def shl({:bigint, a}, {:bigint, b}) when b >= 0 and b <= 1_000_000, + do: {:bigint, Bitwise.bsl(a, b)} + + def shl({:bigint, a}, {:bigint, b}) when b < 0, + do: {:bigint, Bitwise.bsr(a, -b)} + + def shl({:bigint, _}, {:bigint, _}), + do: JSThrow.range_error!("Maximum BigInt size exceeded") + + def shl({:obj, _} = a, b), do: shl(Coercion.to_numeric(a), b) + def shl(a, {:obj, _} = b), do: shl(a, Coercion.to_numeric(b)) + def shl({:bigint, _}, _), do: throw_bigint_mix_error() + def shl(_, {:bigint, _}), do: throw_bigint_mix_error() + + def shl(a, b), + do: + Coercion.to_int32(Bitwise.bsl(Coercion.to_int32(a), Bitwise.band(Coercion.to_int32(b), 31))) + + @doc "Applies JavaScript signed right-shift semantics." + def sar({:bigint, a}, {:bigint, b}), do: {:bigint, Bitwise.bsr(a, b)} + def sar({:obj, _} = a, b), do: sar(Coercion.to_numeric(a), b) + def sar(a, {:obj, _} = b), do: sar(a, Coercion.to_numeric(b)) + def sar({:bigint, _}, _), do: throw_bigint_mix_error() + def sar(_, {:bigint, _}), do: throw_bigint_mix_error() + def sar(a, b), do: Bitwise.bsr(Coercion.to_int32(a), Bitwise.band(Coercion.to_int32(b), 31)) + + @doc "Applies JavaScript unsigned right-shift semantics." + def shr({:obj, _} = a, b), do: shr(Coercion.to_numeric(a), b) + def shr(a, {:obj, _} = b), do: shr(a, Coercion.to_numeric(b)) + + def shr({:bigint, _}, _), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a BigInt value to a number", "TypeError")} + ) + + def shr(_, {:bigint, _}), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a BigInt value to a number", "TypeError")} + ) + + def shr(a, b) do + ua = Coercion.to_int32(a) &&& 0xFFFFFFFF + Bitwise.bsr(ua, Bitwise.band(Coercion.to_int32(b), 31)) + end + + defp throw_bigint_mix_error do + throw( + {:js_throw, + Heap.make_error("Cannot mix BigInt and other types, use explicit conversions", "TypeError")} + ) + end +end diff --git a/lib/quickbeam/vm/interpreter/values/coercion.ex b/lib/quickbeam/vm/interpreter/values/coercion.ex new file mode 100644 index 000000000..85875c9e9 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/values/coercion.ex @@ -0,0 +1,463 @@ +defmodule QuickBEAM.VM.Interpreter.Values.Coercion do + @moduledoc "JS type coercion: to_number, to_int32, to_uint32, to_primitive, to_string_val, and numeric parsing." + + import QuickBEAM.VM.Heap.Keys + import QuickBEAM.VM.Value, only: [is_object: 1] + + alias QuickBEAM.VM.{Bytecode, Heap, Invocation, Runtime} + alias QuickBEAM.VM.ObjectModel.Get + + @doc "Coerces a VM value using JavaScript ToNumber semantics." + def to_number(val) when is_number(val), do: val + def to_number(true), do: 1 + def to_number(false), do: 0 + def to_number(nil), do: 0 + def to_number(:undefined), do: :nan + def to_number(:infinity), do: :infinity + def to_number(:neg_infinity), do: :neg_infinity + def to_number(:nan), do: :nan + + def to_number(s) when is_binary(s), do: parse_numeric(String.trim(s)) + + def to_number({:bigint, _}), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a BigInt value to a number", "TypeError")} + ) + + def to_number({:obj, _} = obj) do + prim = to_primitive(obj) + if is_object(prim), do: :nan, else: to_number(prim) + end + + def to_number({:symbol, _}), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def to_number({:symbol, _, _}), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def to_number({:closure, _, _} = f), do: to_number(fn_to_primitive(f)) + def to_number(%Bytecode.Function{} = f), do: to_number(fn_to_primitive(f)) + def to_number({:bound, _, _, _, _} = f), do: to_number(fn_to_primitive(f)) + def to_number({:builtin, _, _} = f), do: to_number(fn_to_primitive(f)) + def to_number(_), do: :nan + + @doc "Parses a JavaScript numeric string literal into a VM number value." + def parse_numeric(""), do: 0 + def parse_numeric("0x" <> rest), do: parse_int_or_nan(rest, 16) + def parse_numeric("0X" <> rest), do: parse_int_or_nan(rest, 16) + def parse_numeric("0o" <> rest), do: parse_int_or_nan(rest, 8) + def parse_numeric("0O" <> rest), do: parse_int_or_nan(rest, 8) + def parse_numeric("0b" <> rest), do: parse_int_or_nan(rest, 2) + def parse_numeric("0B" <> rest), do: parse_int_or_nan(rest, 2) + def parse_numeric("Infinity" <> _), do: :infinity + def parse_numeric("+Infinity" <> _), do: :infinity + def parse_numeric("-Infinity" <> _), do: :neg_infinity + + def parse_numeric(s) do + case Integer.parse(s) do + {i, ""} -> + i + + _ -> + case Float.parse(s) do + {f, ""} -> f + _ -> :nan + end + end + end + + @doc "Parses an integer in a radix and returns `:nan` on invalid input." + def parse_int_or_nan(s, base) do + case Integer.parse(s, base) do + {i, ""} -> i + _ -> :nan + end + end + + @doc "Coerces a VM value using JavaScript ToInt32 semantics." + def to_int32(val) when is_integer(val), do: wrap_int32(val) + def to_int32(val) when is_float(val), do: wrap_int32(trunc(val)) + def to_int32(true), do: 1 + def to_int32(false), do: 0 + def to_int32(nil), do: 0 + def to_int32(:undefined), do: 0 + + def to_int32(val) when is_binary(val) do + case to_number(val) do + n when is_integer(n) -> wrap_int32(n) + n when is_float(n) -> wrap_int32(trunc(n)) + _ -> 0 + end + end + + def to_int32(:nan), do: 0 + def to_int32(:infinity), do: 0 + def to_int32(:neg_infinity), do: 0 + def to_int32({:obj, _} = obj), do: to_int32(to_number(obj)) + def to_int32(_), do: 0 + + @doc "Coerces a VM value using JavaScript ToUint32 semantics." + def to_uint32(val) when is_integer(val), do: Bitwise.band(val, 0xFFFFFFFF) + def to_uint32(val) when is_float(val), do: Bitwise.band(trunc(val), 0xFFFFFFFF) + def to_uint32(true), do: 1 + def to_uint32(false), do: 0 + def to_uint32(nil), do: 0 + def to_uint32(:undefined), do: 0 + + def to_uint32(val) when is_binary(val) do + case to_number(val) do + n when is_integer(n) -> Bitwise.band(n, 0xFFFFFFFF) + n when is_float(n) -> Bitwise.band(trunc(n), 0xFFFFFFFF) + _ -> 0 + end + end + + def to_uint32(:nan), do: 0 + def to_uint32(:infinity), do: 0 + def to_uint32(:neg_infinity), do: 0 + def to_uint32({:obj, _} = obj), do: to_uint32(to_number(obj)) + def to_uint32(_), do: 0 + + @doc "Wraps an integer into JavaScript signed 32-bit range." + def wrap_int32(n) do + n = Bitwise.band(n, 0xFFFFFFFF) + if n >= 0x80000000, do: n - 0x100000000, else: n + end + + @doc "Coerces a VM value using JavaScript ToString semantics." + def to_string_val(:undefined), do: "undefined" + def to_string_val(nil), do: "null" + def to_string_val(true), do: "true" + def to_string_val(false), do: "false" + def to_string_val(:nan), do: "NaN" + def to_string_val(:infinity), do: "Infinity" + def to_string_val(:neg_infinity), do: "-Infinity" + def to_string_val(n) when is_integer(n), do: Integer.to_string(n) + def to_string_val(n) when is_float(n) and n == 0.0, do: "0" + def to_string_val(n) when is_float(n), do: format_float(n) + def to_string_val({:bigint, n}), do: Integer.to_string(n) + def to_string_val({:symbol, desc}), do: "Symbol(#{desc})" + def to_string_val({:symbol, desc, _ref}), do: "Symbol(#{desc})" + def to_string_val(s) when is_binary(s), do: s + def to_string_val({:closure, _, %{source: src}}) when is_binary(src) and src != "", do: src + def to_string_val({:closure, _, _}), do: "function () { [native code] }" + def to_string_val(%Bytecode.Function{source: src}) when is_binary(src) and src != "", do: src + def to_string_val(%Bytecode.Function{}), do: "function () { [native code] }" + def to_string_val({:builtin, name, _}), do: "function #{name}() { [native code] }" + def to_string_val({:bound, _, _, _, _}), do: "function () { [native code] }" + + def to_string_val({:obj, ref} = obj) do + data = Heap.get_obj(ref, %{}) + + case data do + {:qb_arr, arr} -> + :array.to_list(arr) + |> Enum.map(&to_string_val/1) + |> Enum.join(",") + + list when is_list(list) -> + Enum.map_join(list, ",", fn + :undefined -> "" + nil -> "" + v -> to_string_val(v) + end) + + map when is_map(map) -> + wrapped_key = + cond do + Map.has_key?(map, "__wrapped_string__") -> "__wrapped_string__" + Map.has_key?(map, "__wrapped_number__") -> "__wrapped_number__" + Map.has_key?(map, "__wrapped_boolean__") -> "__wrapped_boolean__" + Map.has_key?(map, "__wrapped_bigint__") -> "__wrapped_bigint__" + Map.has_key?(map, "__wrapped_symbol__") -> "__wrapped_symbol__" + true -> nil + end + + cond do + wrapped_key != nil -> + to_string_val(Map.get(map, wrapped_key)) + + (fun = Map.get(map, "toString")) != nil and fun != :undefined -> + to_string_val(Invocation.invoke_with_receiver(fun, [], Runtime.gas_budget(), obj)) + + true -> + "[object Object]" + end + + _ -> + "[object Object]" + end + end + + def to_string_val(_), do: "[object]" + + @doc "Coerces an object value using JavaScript ToPrimitive semantics." + def to_primitive(val) when is_number(val) or is_binary(val) or is_boolean(val) or is_atom(val), + do: val + + def to_primitive({:bigint, _} = val), do: val + + def to_primitive({:closure, _, %{source: src}}) when is_binary(src) and src != "", do: src + def to_primitive({:closure, _, _}), do: "function () { [native code] }" + + def to_primitive(%Bytecode.Function{source: src}) when is_binary(src) and src != "", do: src + def to_primitive(%Bytecode.Function{}), do: "function () { [native code] }" + def to_primitive({:builtin, name, _}), do: "function #{name}() { [native code] }" + def to_primitive({:bound, _, _, _, _}), do: "function () { [native code] }" + + def to_primitive({:obj, ref} = obj) do + data = Heap.get_obj(ref, %{}) + + if is_map(data) do + wrapped_key = + cond do + Map.has_key?(data, "__wrapped_bigint__") -> "__wrapped_bigint__" + Map.has_key?(data, "__wrapped_number__") -> "__wrapped_number__" + Map.has_key?(data, "__wrapped_string__") -> "__wrapped_string__" + Map.has_key?(data, "__wrapped_boolean__") -> "__wrapped_boolean__" + Map.has_key?(data, "__wrapped_symbol__") -> "__wrapped_symbol__" + true -> nil + end + + if wrapped_key != nil do + Map.get(data, wrapped_key) + else + sym_key = {:symbol, "Symbol.toPrimitive"} + + raw_prim = Map.get(data, sym_key) || Get.get(obj, sym_key) + + to_prim = + case raw_prim do + {:accessor, getter, _} when getter != nil -> + Get.call_getter(getter, obj) + + other -> + other + end + + if to_prim != nil and to_prim != :undefined do + if not callable?(to_prim) do + throw( + {:js_throw, Heap.make_error("Symbol.toPrimitive is not a function", "TypeError")} + ) + end + + result = + Invocation.invoke_with_receiver(to_prim, ["default"], Runtime.gas_budget(), obj) + + if is_object(result) do + throw( + {:js_throw, + Heap.make_error("Cannot convert object to primitive value", "TypeError")} + ) + else + result + end + else + call_to_primitive(data, obj, "valueOf") || + if(not has_own_method?(data, "valueOf"), + do: proto_to_primitive(data, obj, "valueOf") + ) || + call_to_primitive(data, obj, "toString") || + if(not has_own_method?(data, "toString"), + do: proto_to_primitive(data, obj, "toString") || get_to_primitive(obj, "toString") + ) || + throw( + {:js_throw, + Heap.make_error("Cannot convert object to primitive value", "TypeError")} + ) + end + end + else + obj + end + end + + @doc "Converts a function-like VM value to its primitive string representation." + def fn_to_primitive(fun) do + statics = Heap.get_ctor_statics(fun) + vo = Map.get(statics, "valueOf") + ts = Map.get(statics, "toString") + + result = + if callable?(vo) do + r = Invocation.invoke_with_receiver(vo, [], Runtime.gas_budget(), fun) + if function_like?(r), do: nil, else: r + end + + result = + result || + if callable?(ts) do + r = Invocation.invoke_with_receiver(ts, [], Runtime.gas_budget(), fun) + if function_like?(r), do: nil, else: r + end + + result || to_string_val(fun) + end + + @doc "Coerces a VM value using JavaScript ToNumeric semantics." + def to_numeric({:obj, _} = obj) do + case to_primitive(obj) do + {:bigint, _} = b -> + b + + {:obj, _} -> + throw( + {:js_throw, Heap.make_error("Cannot convert object to primitive value", "TypeError")} + ) + + other -> + to_number(other) + end + end + + @doc "Compatibility wrapper for primitive coercion." + def coerce_to_primitive(val) do + cond do + is_object(val) -> to_primitive(val) + function_like?(val) -> fn_to_primitive(val) + true -> val + end + end + + defp callable?({:closure, _, _}), do: true + defp callable?({:builtin, _, cb}) when is_function(cb), do: true + defp callable?({:bound, _, _, _, _}), do: true + defp callable?(%Bytecode.Function{}), do: true + defp callable?(_), do: false + + defp function_like?({:closure, _, _}), do: true + defp function_like?(%Bytecode.Function{}), do: true + defp function_like?({:bound, _, _, _, _}), do: true + defp function_like?({:builtin, _, _}), do: true + defp function_like?(_), do: false + + defp has_own_method?(data, method) when is_map(data) do + case Map.fetch(data, method) do + {:ok, :undefined} -> false + {:ok, _} -> true + :error -> false + end + end + + @dialyzer {:nowarn_function, has_own_method?: 2} + defp has_own_method?(_, _), do: false + + defp get_to_primitive(obj, method) do + case Get.get(obj, method) do + fun when fun != nil and fun != :undefined -> + unwrap_primitive(Invocation.invoke_with_receiver(fun, [], Runtime.gas_budget(), obj)) + + _ -> + nil + end + end + + defp call_to_primitive(map, obj, method) do + case Map.get(map, method) do + {:builtin, _, cb} -> + unwrap_primitive(cb.([], obj)) + + fun when fun != nil and fun != :undefined -> + if callable?(fun) do + unwrap_primitive(Invocation.invoke_with_receiver(fun, [], Runtime.gas_budget(), obj)) + else + nil + end + + _ -> + nil + end + end + + defp proto_to_primitive(map, obj, method) do + case Map.get(map, proto()) do + {:obj, pref} -> + pmap = Heap.get_obj(pref, %{}) + if is_map(pmap), do: call_to_primitive(pmap, obj, method) + + _ -> + nil + end + end + + defp unwrap_primitive({:obj, _}), do: nil + defp unwrap_primitive(val), do: val + + defp format_float(n) do + short = :erlang.float_to_binary(n, [:short]) + + cond do + String.contains?(short, "e") or String.contains?(short, "E") -> + format_js_exponential(short, n) + + String.ends_with?(short, ".0") -> + String.trim_trailing(short, ".0") + + true -> + short + end + end + + defp format_js_exponential(short, _n) do + {mantissa, exp} = + case String.split(short, ~r/[eE]/) do + [m, e] -> {m, String.to_integer(e)} + _ -> {short, 0} + end + + mantissa = + if String.ends_with?(mantissa, ".0"), + do: String.trim_trailing(mantissa, ".0"), + else: mantissa + + expand_exponential(mantissa, exp) + end + + defp expand_exponential(mantissa, exp) when exp >= 0 and exp <= 20 do + {prefix, digits, decimal_pos} = split_mantissa(mantissa) + total_pos = decimal_pos + exp + + if total_pos >= String.length(digits) do + prefix <> digits <> String.duplicate("0", total_pos - String.length(digits)) + else + prefix <> + String.slice(digits, 0, total_pos) <> "." <> String.slice(digits, total_pos..-1//1) + end + end + + defp expand_exponential(mantissa, exp) when exp < 0 and exp >= -6 do + {prefix, digits, _} = split_mantissa(mantissa) + prefix <> "0." <> String.duplicate("0", abs(exp) - 1) <> digits + end + + defp expand_exponential(mantissa, exp) do + sign = if exp >= 0, do: "+", else: "" + mantissa <> "e" <> sign <> Integer.to_string(exp) + end + + defp split_mantissa(mantissa) do + {prefix, abs_mantissa} = + case mantissa do + "-" <> rest -> {"-", rest} + other -> {"", other} + end + + digits = String.replace(abs_mantissa, ".", "") + + decimal_pos = + case String.split(abs_mantissa, ".") do + [int, _] -> String.length(int) + _ -> String.length(digits) + end + + {prefix, digits, decimal_pos} + end +end diff --git a/lib/quickbeam/vm/interpreter/values/comparison.ex b/lib/quickbeam/vm/interpreter/values/comparison.ex new file mode 100644 index 000000000..0ebbbaa38 --- /dev/null +++ b/lib/quickbeam/vm/interpreter/values/comparison.ex @@ -0,0 +1,271 @@ +defmodule QuickBEAM.VM.Interpreter.Values.Comparison do + @moduledoc "JS relational comparisons: lt, lte, gt, gte, numeric_compare, abstract_compare." + + import Bitwise + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Interpreter.Values.Coercion + + @doc "Applies JavaScript less-than semantics." + def lt({:bigint, a}, {:bigint, b}), do: a < b + def lt({:bigint, _}, :nan), do: false + def lt(:nan, {:bigint, _}), do: false + def lt({:bigint, _}, :infinity), do: true + def lt({:bigint, _}, :neg_infinity), do: false + def lt(:infinity, {:bigint, _}), do: false + def lt(:neg_infinity, {:bigint, _}), do: true + def lt({:bigint, a}, b) when is_number(b), do: a < b + def lt(a, {:bigint, b}) when is_number(a), do: a < b + def lt({:bigint, _} = a, b) when is_binary(b), do: bigint_string_compare(a, b, &Kernel. y < x end) + + def lt({:bigint, a}, b) when is_boolean(b), do: a < Coercion.to_number(b) + def lt(a, {:bigint, b}) when is_boolean(a), do: Coercion.to_number(a) < b + + def lt({:bigint, _}, {:symbol, _}), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def lt({:bigint, _}, {:symbol, _, _}), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def lt({:symbol, _}, {:bigint, _}), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def lt({:symbol, _, _}, {:bigint, _}), + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def lt(a, b) when is_number(a) and is_number(b), do: a < b + def lt(a, b) when is_binary(a) and is_binary(b), do: utf16_compare(a, b) == :lt + + def lt(a, b) do + pa = Coercion.coerce_to_primitive(a) + pb = Coercion.coerce_to_primitive(b) + + if is_binary(pa) and is_binary(pb), + do: pa < pb, + else: numeric_compare(Coercion.to_number(pa), Coercion.to_number(pb), &Kernel. y <= x end) + + def lte(a, b) when is_number(a) and is_number(b), do: a <= b + def lte(a, b) when is_binary(a) and is_binary(b), do: utf16_compare(a, b) in [:lt, :eq] + + def lte(a, b) do + pa = Coercion.coerce_to_primitive(a) + pb = Coercion.coerce_to_primitive(b) + + if is_binary(pa) and is_binary(pb), + do: pa <= pb, + else: numeric_compare(Coercion.to_number(pa), Coercion.to_number(pb), &Kernel.<=/2) + end + + @doc "Applies JavaScript greater-than semantics." + def gt({:bigint, a}, {:bigint, b}), do: a > b + def gt({:bigint, _}, :nan), do: false + def gt(:nan, {:bigint, _}), do: false + def gt({:bigint, _}, :infinity), do: false + def gt({:bigint, _}, :neg_infinity), do: true + def gt(:infinity, {:bigint, _}), do: true + def gt(:neg_infinity, {:bigint, _}), do: false + def gt({:bigint, a}, b) when is_number(b), do: a > b + def gt(a, {:bigint, b}) when is_number(a), do: a > b + def gt({:bigint, _} = a, b) when is_binary(b), do: bigint_string_compare(a, b, &Kernel.>/2) + def gt({:bigint, a}, b) when is_boolean(b), do: a > Coercion.to_number(b) + def gt(a, {:bigint, b}) when is_boolean(a), do: Coercion.to_number(a) > b + + def gt(a, {:bigint, _} = b) when is_binary(a), + do: bigint_string_compare(b, a, fn x, y -> y > x end) + + def gt({:bigint, _}, s) when is_tuple(s) and elem(s, 0) == :symbol, + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def gt(s, {:bigint, _}) when is_tuple(s) and elem(s, 0) == :symbol, + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def gt(a, b) when is_number(a) and is_number(b), do: a > b + def gt(a, b) when is_binary(a) and is_binary(b), do: utf16_compare(a, b) == :gt + + def gt(a, b) do + pa = Coercion.coerce_to_primitive(a) + pb = Coercion.coerce_to_primitive(b) + + if is_binary(pa) and is_binary(pb), + do: pa > pb, + else: numeric_compare(Coercion.to_number(pa), Coercion.to_number(pb), &Kernel.>/2) + end + + @doc "Applies JavaScript greater-than-or-equal semantics." + def gte({:bigint, a}, {:bigint, b}), do: a >= b + def gte({:bigint, _}, :nan), do: false + def gte(:nan, {:bigint, _}), do: false + def gte({:bigint, _}, :infinity), do: false + def gte({:bigint, _}, :neg_infinity), do: true + def gte(:infinity, {:bigint, _}), do: true + def gte(:neg_infinity, {:bigint, _}), do: false + def gte({:bigint, a}, b) when is_number(b), do: a >= b + def gte(a, {:bigint, b}) when is_number(a), do: a >= b + def gte({:bigint, _} = a, b) when is_binary(b), do: bigint_string_compare(a, b, &Kernel.>=/2) + def gte({:bigint, a}, b) when is_boolean(b), do: a >= Coercion.to_number(b) + def gte(a, {:bigint, b}) when is_boolean(a), do: Coercion.to_number(a) >= b + + def gte(a, {:bigint, _} = b) when is_binary(a), + do: bigint_string_compare(b, a, fn x, y -> y >= x end) + + def gte({:bigint, _}, s) when is_tuple(s) and elem(s, 0) == :symbol, + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def gte(s, {:bigint, _}) when is_tuple(s) and elem(s, 0) == :symbol, + do: + throw( + {:js_throw, Heap.make_error("Cannot convert a Symbol value to a number", "TypeError")} + ) + + def gte(a, b) when is_number(a) and is_number(b), do: a >= b + def gte(a, b) when is_binary(a) and is_binary(b), do: utf16_compare(a, b) in [:gt, :eq] + + def gte(a, b) do + pa = Coercion.coerce_to_primitive(a) + pb = Coercion.coerce_to_primitive(b) + + if is_binary(pa) and is_binary(pb), + do: pa >= pb, + else: numeric_compare(Coercion.to_number(pa), Coercion.to_number(pb), &Kernel.>=/2) + end + + @doc "Compares numeric VM values while handling JavaScript NaN and infinity sentinels." + def numeric_compare(:nan, _, _), do: false + def numeric_compare(_, :nan, _), do: false + def numeric_compare(:infinity, :infinity, op), do: op.(1, 1) + def numeric_compare(:neg_infinity, :neg_infinity, op), do: op.(1, 1) + def numeric_compare(:infinity, _, op), do: op.(1, 0) + def numeric_compare(_, :infinity, op), do: op.(0, 1) + def numeric_compare(:neg_infinity, _, op), do: op.(0, 1) + def numeric_compare(_, :neg_infinity, op), do: op.(1, 0) + def numeric_compare(a, b, op) when is_number(a) and is_number(b), do: op.(a, b) + def numeric_compare(_, _, _), do: false + + defp bigint_string_compare({:bigint, a}, str, op) do + trimmed = String.trim(str) + + case trimmed do + "" -> + op.(a, 0) + + "0x" <> hex -> + case Integer.parse(hex, 16) do + {n, ""} -> op.(a, n) + _ -> false + end + + "0X" <> hex -> + case Integer.parse(hex, 16) do + {n, ""} -> op.(a, n) + _ -> false + end + + "0o" <> oct -> + case Integer.parse(oct, 8) do + {n, ""} -> op.(a, n) + _ -> false + end + + "0b" <> bin -> + case Integer.parse(bin, 2) do + {n, ""} -> op.(a, n) + _ -> false + end + + _ -> + case Integer.parse(trimmed) do + {n, ""} -> op.(a, n) + _ -> false + end + end + end + + defp utf16_compare(a, b) when a == b, do: :eq + + defp utf16_compare(a, b) do + if needs_utf16_compare?(a) or needs_utf16_compare?(b) do + compare_utf16_units(to_utf16_units(a), to_utf16_units(b)) + else + cond do + a < b -> :lt + a > b -> :gt + true -> :eq + end + end + end + + defp needs_utf16_compare?(<<>>), do: false + defp needs_utf16_compare?(<>) when b >= 0xF0, do: true + defp needs_utf16_compare?(<>) when b >= 0xED, do: true + defp needs_utf16_compare?(<<_, rest::binary>>), do: needs_utf16_compare?(rest) + + defp to_utf16_units(<<>>), do: [] + + defp to_utf16_units(<>) when cp >= 0x10000 do + hi = 0xD800 + ((cp - 0x10000) >>> 10) + lo = 0xDC00 + (cp - 0x10000 &&& 0x3FF) + [hi, lo | to_utf16_units(rest)] + end + + defp to_utf16_units(<<0xED, a, b, rest::binary>>) when a >= 0xA0 do + cp = (0xED &&& 0x0F) <<< 12 ||| (a &&& 0x3F) <<< 6 ||| (b &&& 0x3F) + [cp | to_utf16_units(rest)] + end + + defp to_utf16_units(<>), do: [cp | to_utf16_units(rest)] + defp to_utf16_units(<<_, rest::binary>>), do: to_utf16_units(rest) + + defp compare_utf16_units([], []), do: :eq + defp compare_utf16_units([], _), do: :lt + defp compare_utf16_units(_, []), do: :gt + + defp compare_utf16_units([a | ra], [b | rb]) do + cond do + a < b -> :lt + a > b -> :gt + true -> compare_utf16_units(ra, rb) + end + end +end diff --git a/lib/quickbeam/vm/interpreter/values/equality.ex b/lib/quickbeam/vm/interpreter/values/equality.ex new file mode 100644 index 000000000..bc85d25fc --- /dev/null +++ b/lib/quickbeam/vm/interpreter/values/equality.ex @@ -0,0 +1,115 @@ +defmodule QuickBEAM.VM.Interpreter.Values.Equality do + @moduledoc "JS equality operations: eq, neq, strict_eq, abstract_eq." + + alias QuickBEAM.VM.Interpreter.Values.Coercion + + @doc "Applies JavaScript strict equality semantics." + def strict_eq(:nan, :nan), do: false + def strict_eq(:infinity, :infinity), do: true + def strict_eq(:neg_infinity, :neg_infinity), do: true + def strict_eq({:bigint, a}, {:bigint, b}), do: a == b + def strict_eq({:symbol, _, ref1}, {:symbol, _, ref2}), do: ref1 === ref2 + def strict_eq(a, b) when is_number(a) and is_number(b), do: a == b + def strict_eq(a, b), do: a === b + + @doc "Applies JavaScript abstract equality semantics." + def eq({:bigint, a}, {:bigint, b}), do: a == b + def eq(a, b), do: abstract_eq(a, b) + + @doc "Applies JavaScript abstract inequality semantics." + def neq(a, b), do: not eq(a, b) + + @doc "Applies the core JavaScript abstract equality algorithm." + def abstract_eq(nil, nil), do: true + def abstract_eq(nil, :undefined), do: true + def abstract_eq(:undefined, nil), do: true + def abstract_eq(:undefined, :undefined), do: true + def abstract_eq(:nan, _), do: false + def abstract_eq(_, :nan), do: false + def abstract_eq(:infinity, :infinity), do: true + def abstract_eq(:neg_infinity, :neg_infinity), do: true + def abstract_eq(:infinity, b) when is_number(b), do: false + def abstract_eq(:neg_infinity, b) when is_number(b), do: false + def abstract_eq(a, :infinity) when is_number(a), do: false + def abstract_eq(a, :neg_infinity) when is_number(a), do: false + def abstract_eq({:bigint, a}, {:bigint, b}), do: a == b + def abstract_eq(a, b) when is_number(a) and is_number(b), do: a == b + def abstract_eq(a, b) when is_binary(a) and is_binary(b), do: a == b + def abstract_eq(a, b) when is_boolean(a) and is_boolean(b), do: a == b + def abstract_eq(true, b), do: abstract_eq(1, b) + def abstract_eq(a, true), do: abstract_eq(a, 1) + def abstract_eq(false, b), do: abstract_eq(0, b) + def abstract_eq(a, false), do: abstract_eq(a, 0) + def abstract_eq(a, b) when is_number(a) and is_binary(b), do: a == Coercion.to_number(b) + def abstract_eq(a, b) when is_binary(a) and is_number(b), do: Coercion.to_number(a) == b + def abstract_eq({:bigint, a}, b) when is_integer(b), do: a == b + def abstract_eq({:bigint, a}, b) when is_float(b), do: a == b + + def abstract_eq({:bigint, a}, b) when is_binary(b) do + case String.trim(b) do + "" -> + a == 0 + + trimmed -> + case Integer.parse(trimmed) do + {n, ""} -> a == n + _ -> false + end + end + end + + def abstract_eq(a, {:bigint, b}) when is_binary(a) do + case String.trim(a) do + "" -> + 0 == b + + trimmed -> + case Integer.parse(trimmed) do + {n, ""} -> n == b + _ -> false + end + end + end + + def abstract_eq(a, {:bigint, b}) when is_integer(a), do: a == b + def abstract_eq(a, {:bigint, b}) when is_float(a), do: a == b + + def abstract_eq({:bigint, _} = a, b) when is_boolean(b), + do: abstract_eq(a, Coercion.to_number(b)) + + def abstract_eq(a, {:bigint, _} = b) when is_boolean(a), + do: abstract_eq(Coercion.to_number(a), b) + + def abstract_eq({:bigint, _} = a, {:obj, _} = b), do: abstract_eq(a, Coercion.to_primitive(b)) + def abstract_eq({:obj, _} = a, {:bigint, _} = b), do: abstract_eq(Coercion.to_primitive(a), b) + + def abstract_eq({:obj, _} = obj, b) when is_number(b) or is_binary(b) do + prim = Coercion.to_primitive(obj) + + if is_map(prim) or (is_tuple(prim) and elem(prim, 0) == :obj), + do: false, + else: abstract_eq(prim, b) + end + + def abstract_eq(a, {:obj, _} = obj) when is_number(a) or is_binary(a) do + prim = Coercion.to_primitive(obj) + + if is_map(prim) or (is_tuple(prim) and elem(prim, 0) == :obj), + do: false, + else: abstract_eq(a, prim) + end + + def abstract_eq({:symbol, _} = a, {:obj, _} = b), do: abstract_eq(a, Coercion.to_primitive(b)) + def abstract_eq({:obj, _} = a, {:symbol, _} = b), do: abstract_eq(Coercion.to_primitive(a), b) + + def abstract_eq({:symbol, _, _} = a, {:obj, _} = b), + do: abstract_eq(a, Coercion.to_primitive(b)) + + def abstract_eq({:obj, _} = a, {:symbol, _, _} = b), + do: abstract_eq(Coercion.to_primitive(a), b) + + def abstract_eq({:obj, ref1}, {:obj, ref2}), do: ref1 === ref2 + def abstract_eq({:symbol, _, ref1}, {:symbol, _, ref2}), do: ref1 === ref2 + def abstract_eq({:symbol, a}, {:symbol, b}), do: a === b + def abstract_eq(_, _), do: false +end diff --git a/lib/quickbeam/vm/invocation.ex b/lib/quickbeam/vm/invocation.ex new file mode 100644 index 000000000..3fc73247e --- /dev/null +++ b/lib/quickbeam/vm/invocation.ex @@ -0,0 +1,454 @@ +defmodule QuickBEAM.VM.Invocation do + @moduledoc "Unified JS function invocation: dispatches to compiled modules, interpreter fallback, builtins, and native callbacks." + + import QuickBEAM.VM.Heap.Keys, only: [proto: 0] + + alias QuickBEAM.VM.{Builtin, Bytecode, Compiler, GlobalEnv, Heap, Runtime} + alias QuickBEAM.VM.Compiler.Runner + alias QuickBEAM.VM.Interpreter + alias QuickBEAM.VM.Interpreter.Context + alias QuickBEAM.VM.Invocation.Context, as: InvokeContext + alias QuickBEAM.VM.ObjectModel.{Class, Get} + + @doc "Invokes a JavaScript callable with positional arguments and a gas budget." + def invoke(fun, args, gas \\ Runtime.gas_budget()) + + def invoke(%Bytecode.Function{} = fun, args, gas) do + track_invoke_depth() + + result = + case Compiler.invoke(fun, args) do + {:ok, result} -> result + :error -> Interpreter.invoke_function_fallback(fun, args, gas, active_ctx()) + end + + maybe_gc(result, [fun | args]) + end + + def invoke({:closure, _, %Bytecode.Function{} = inner} = closure, args, gas) do + track_invoke_depth() + + result = + if compiled_closure_callable?(inner) do + case Runner.invoke(closure, args) do + {:ok, result} -> result + :error -> Interpreter.invoke_closure_fallback(closure, args, gas, active_ctx()) + end + else + Interpreter.invoke_closure_fallback(closure, args, gas, active_ctx()) + end + + maybe_gc(result, [closure | args]) + end + + def invoke(other, args, _gas) when not is_tuple(other) or elem(other, 0) != :bound, + do: Builtin.call(other, args, nil) + + def invoke({:bound, _, inner, _, _}, args, gas), do: invoke(inner, args, gas) + + @doc "Invokes a JavaScript callable with an explicit `this` receiver." + def invoke_with_receiver(fun, args, this_obj), + do: invoke_with_receiver(fun, args, Runtime.gas_budget(), this_obj) + + def invoke_with_receiver(fun, args, gas, this_obj) do + prev = Heap.get_ctx() + Heap.put_ctx(%{active_ctx() | this: this_obj} |> InvokeContext.attach_method_state()) + + try do + invoke_receiver_target(fun, args, gas, this_obj) + after + if prev do + refreshed = GlobalEnv.refresh(prev) + Heap.put_ctx(refreshed) + else + Heap.put_ctx(nil) + end + end + end + + @doc "Invokes a JavaScript constructor with `this` and `new.target` context." + def invoke_constructor(fun, args, this_obj, new_target), + do: invoke_constructor(fun, args, Runtime.gas_budget(), this_obj, new_target) + + def invoke_constructor(fun, args, gas, this_obj, new_target) do + prev = Heap.get_ctx() + + ctor_ctx = + %{active_ctx() | this: this_obj, new_target: new_target} + |> InvokeContext.attach_method_state() + + Heap.put_ctx(ctor_ctx) + + try do + dispatch(fun, args, gas, ctor_ctx, this_obj) + after + if prev, do: Heap.put_ctx(prev), else: Heap.put_ctx(nil) + end + end + + @doc "Dispatches a callable to bytecode, closure, bound-function, or builtin execution." + def dispatch(fun, args, gas, ctx, this) do + case fun do + %Bytecode.Function{} = bytecode_fun -> + Interpreter.invoke_function_fallback(bytecode_fun, args, gas, ctx) + + {:closure, _, %Bytecode.Function{}} = closure -> + Interpreter.invoke_closure_fallback(closure, args, gas, ctx) + + {:bound, _, inner, _, _} -> + invoke(inner, args, gas) + + other -> + Builtin.call(other, args, this) + end + end + + @doc "Invokes a callback and propagates JavaScript throws to the caller." + def invoke_callback_or_throw(fun, args, this_obj \\ nil) do + ctx = active_ctx() + + case fun do + {:closure, _, %Bytecode.Function{need_home_object: false}} = closure -> + case Runner.invoke(closure, args, ctx) do + {:ok, value} -> value + :error -> Interpreter.invoke_closure_fallback(closure, args, ctx.gas, ctx) + end + + {:closure, _, %Bytecode.Function{}} = closure -> + Interpreter.invoke_closure_fallback(closure, args, ctx.gas, ctx) + + %Bytecode.Function{} = bytecode_fun -> + case Runner.invoke(bytecode_fun, args, ctx) do + {:ok, value} -> value + :error -> Interpreter.invoke_function_fallback(bytecode_fun, args, ctx.gas, ctx) + end + + other -> + Builtin.call(other, args, this_obj) + end + end + + @doc "Invokes a callback, converting JavaScript throws to `:undefined`." + def call_callback(fun, args), do: call_callback(active_ctx(), fun, args) + + def call_callback(ctx, fun, args) do + case fun do + %Bytecode.Function{} = bytecode_fun -> + callback_invoke(bytecode_fun, args, ctx) + + {:closure, _, %Bytecode.Function{}} = closure -> + callback_invoke(closure, args, ctx) + + other -> + try do + Builtin.call(other, args, nil) + catch + {:js_throw, _} -> :undefined + end + end + end + + @doc "Helper for unified js function invocation: dispatches to compiled modules, interpreter fallback, builtins, and native callbacks." + def invoke_callback(fun, args), do: invoke_callback(active_ctx(), fun, args) + + def invoke_callback(ctx, fun, args) do + case fun do + %Bytecode.Function{} = bytecode_fun -> + callback_invoke(bytecode_fun, args, ctx, fn -> Builtin.arg(args, 0, :undefined) end) + + {:closure, _, %Bytecode.Function{}} = closure -> + callback_invoke(closure, args, ctx, fn -> Builtin.arg(args, 0, :undefined) end) + + _ -> + try do + Builtin.call(fun, args, nil) + catch + {:js_throw, _} -> Builtin.arg(args, 0, :undefined) + end + end + end + + @doc "Invokes a callable from compiler-generated runtime helper code." + def invoke_runtime(fun, args), do: invoke_runtime(active_ctx(), fun, args) + + def invoke_runtime( + %Context{} = ctx, + {:closure, _, %Bytecode.Function{need_home_object: false} = inner} = closure, + args + ) do + key = {inner.byte_code, inner.arg_count} + + case Heap.get_compiled(key) do + {:compiled, {mod, name}, atoms} -> + nargs = Runner.normalize_args(args, inner.arg_count) + + fast_ctx = %{ + ctx + | current_func: closure, + arg_buf: List.to_tuple(nargs), + atoms: atoms || ctx.atoms, + pd_synced: false + } + + apply(mod, name, [fast_ctx | nargs]) + + _ -> + invoke_runtime_full(ctx, closure, args) + end + end + + def invoke_runtime(ctx, fun, args), do: invoke_runtime_full(ctx, fun, args) + + defp invoke_runtime_full(ctx, fun, args) do + case fun do + %Bytecode.Function{} = bytecode_fun -> + case Runner.invoke(bytecode_fun, args, ctx) do + {:ok, value} -> value + :error -> Interpreter.invoke_function_fallback(bytecode_fun, args, ctx.gas, ctx) + end + + {:closure, _, %Bytecode.Function{} = inner} = closure -> + invoke_closure(closure, inner, args, ctx) + + {:bound, _, inner, _, _} -> + invoke_runtime(ctx, inner, args) + + other -> + Builtin.call(other, args, nil) + end + end + + @doc "Invokes a method from compiler-generated runtime helper code with an explicit receiver." + def invoke_method_runtime(fun, this_obj, args), + do: invoke_method_runtime(active_ctx(), fun, this_obj, args) + + def invoke_method_runtime(ctx, fun, this_obj, args) do + case fun do + %Bytecode.Function{} = bytecode_fun -> + if compiled_method_callable?(bytecode_fun, this_obj) do + case Runner.invoke_with_receiver(bytecode_fun, args, this_obj, ctx) do + {:ok, value} -> + value + + :error -> + Interpreter.invoke_function_fallback( + bytecode_fun, + args, + ctx.gas, + Context.mark_dirty(%{ctx | this: this_obj}) + ) + end + else + Interpreter.invoke_function_fallback( + bytecode_fun, + args, + ctx.gas, + Context.mark_dirty(%{ctx | this: this_obj}) + ) + end + + {:closure, _, %Bytecode.Function{} = inner} = closure -> + if compiled_method_callable?(inner, this_obj) do + case Runner.invoke_with_receiver(closure, args, this_obj, ctx) do + {:ok, value} -> + value + + :error -> + Interpreter.invoke_closure_fallback( + closure, + args, + ctx.gas, + Context.mark_dirty(%{ctx | this: this_obj}) + ) + end + else + Interpreter.invoke_closure_fallback( + closure, + args, + ctx.gas, + Context.mark_dirty(%{ctx | this: this_obj}) + ) + end + + {:bound, _, inner, _, _} -> + invoke_method_runtime(ctx, inner, this_obj, args) + + other -> + Builtin.call(other, args, this_obj) + end + end + + @doc "Constructs a value from compiler-generated runtime helper code." + def construct_runtime(ctor, new_target, args), + do: construct_runtime(active_ctx(), ctor, new_target, args) + + def construct_runtime(ctx, ctor, new_target, args) do + raw_ctor = unwrap_constructor_target(ctor) + raw_new_target = unwrap_new_target(new_target) + + ctor_proto = + constructor_prototype(raw_new_target) || constructor_prototype(raw_ctor) || + Heap.get_object_prototype() + + init = if ctor_proto, do: %{proto() => ctor_proto}, else: %{} + this_obj = Heap.wrap(init) + + result = + case ctor do + %Bytecode.Function{} = fun -> + case Runner.invoke_constructor(fun, args, this_obj, new_target, ctx) do + {:ok, value} -> value + :error -> invoke_constructor(fun, args, ctx.gas, this_obj, new_target) + end + + {:closure, _, %Bytecode.Function{}} = closure -> + case Runner.invoke_constructor(closure, args, this_obj, new_target, ctx) do + {:ok, value} -> + value + + :error -> + invoke_constructor(closure, args, ctx.gas, this_obj, new_target) + end + + {:bound, _, _inner, orig_fun, bound_args} -> + construct_runtime(orig_fun, new_target, bound_args ++ args) + + {:builtin, _name, cb} when is_function(cb, 2) -> + cb.(args, this_obj) + + _ -> + this_obj + end + + Class.coalesce_this_result(result, this_obj) + end + + defp maybe_gc(result, extra_roots) do + depth = Heap.get_invoke_depth() - 1 + Heap.put_invoke_depth(depth) + + if depth == 0 and Heap.gc_needed?() do + Heap.gc([result | extra_roots]) + end + + result + end + + defp track_invoke_depth do + Heap.put_invoke_depth(Heap.get_invoke_depth() + 1) + end + + defp active_ctx do + base_globals = GlobalEnv.base_globals() + + case Heap.get_ctx() do + %Context{} = ctx when ctx.globals == %{} -> + Context.mark_dirty(%{ctx | globals: base_globals}) + + %Context{} = ctx -> + ctx + + nil -> + %Context{atoms: Heap.get_atoms(), globals: base_globals} + + map -> + struct( + Context, + Map.merge(Map.from_struct(%Context{}), Map.put(map, :globals, base_globals)) + ) + end + end + + defp invoke_receiver_target(%Bytecode.Function{} = fun, args, gas, this_obj) do + if compiled_method_callable?(fun, this_obj) do + case Runner.invoke_with_receiver(fun, args, this_obj) do + {:ok, value} -> value + :error -> Interpreter.invoke_function_fallback(fun, args, gas, Heap.get_ctx()) + end + else + Interpreter.invoke_function_fallback(fun, args, gas, Heap.get_ctx()) + end + end + + defp invoke_receiver_target( + {:closure, _, %Bytecode.Function{} = inner} = closure, + args, + gas, + this_obj + ) do + if compiled_method_callable?(inner, this_obj) do + case Runner.invoke_with_receiver(closure, args, this_obj) do + {:ok, value} -> value + :error -> Interpreter.invoke_closure_fallback(closure, args, gas, Heap.get_ctx()) + end + else + Interpreter.invoke_closure_fallback(closure, args, gas, Heap.get_ctx()) + end + end + + defp invoke_receiver_target(other, args, gas, this_obj), + do: dispatch(other, args, gas, Heap.get_ctx(), this_obj) + + defp callback_invoke(fun, args, ctx, on_throw \\ fn -> :undefined end) + + defp callback_invoke(%Bytecode.Function{} = fun, args, ctx, on_throw) do + try do + case Runner.invoke(fun, args, ctx) do + {:ok, value} -> value + :error -> Interpreter.invoke_function_fallback(fun, args, ctx.gas, ctx) + end + catch + {:js_throw, _} -> on_throw.() + end + end + + defp callback_invoke({:closure, _, %Bytecode.Function{} = inner} = closure, args, ctx, on_throw) do + try do + invoke_closure(closure, inner, args, ctx) + catch + {:js_throw, _} -> on_throw.() + end + end + + defp invoke_closure(closure, %Bytecode.Function{need_home_object: false}, args, ctx) do + case Runner.invoke(closure, args, ctx) do + {:ok, value} -> value + :error -> Interpreter.invoke_closure_fallback(closure, args, ctx.gas, ctx) + end + end + + defp invoke_closure(closure, _inner, args, ctx) do + Interpreter.invoke_closure_fallback(closure, args, ctx.gas, ctx) + end + + defp compiled_closure_callable?(%Bytecode.Function{need_home_object: false}), do: true + defp compiled_closure_callable?(_), do: false + + defp compiled_method_callable?( + %Bytecode.Function{need_home_object: false, func_kind: 0}, + {:obj, _} + ), + do: true + + defp compiled_method_callable?(_, _), do: false + + defp unwrap_constructor_target({:closure, _, %Bytecode.Function{} = fun}), do: fun + defp unwrap_constructor_target({:bound, _, inner, _, _}), do: unwrap_constructor_target(inner) + defp unwrap_constructor_target(other), do: other + + defp unwrap_new_target({:closure, _, %Bytecode.Function{} = fun}), do: fun + defp unwrap_new_target(%Bytecode.Function{} = fun), do: fun + defp unwrap_new_target(_), do: nil + + defp constructor_prototype(nil), do: nil + + defp constructor_prototype(target) do + case Heap.get_class_proto(target) do + {:obj, _} = proto_obj -> proto_obj + _ -> normalize_constructor_prototype(Get.get(target, "prototype")) + end + end + + defp normalize_constructor_prototype({:obj, _} = object_proto), do: object_proto + defp normalize_constructor_prototype(_), do: nil +end diff --git a/lib/quickbeam/vm/invocation/context.ex b/lib/quickbeam/vm/invocation/context.ex new file mode 100644 index 000000000..b5b6e1e6a --- /dev/null +++ b/lib/quickbeam/vm/invocation/context.ex @@ -0,0 +1,177 @@ +defmodule QuickBEAM.VM.Invocation.Context do + @moduledoc "Fast-context snapshot and restoration: serialises the interpreter context into/out of process dictionary for JIT calls." + + alias QuickBEAM.VM.{Bytecode, Heap, Runtime} + alias QuickBEAM.VM.Interpreter.Context + alias QuickBEAM.VM.ObjectModel.{Class, Functions} + + @fast_ctx_key :qb_fast_ctx + @missing :__qb_missing__ + + @doc "Returns the current fast-context process dictionary snapshot." + def snapshot_fast_ctx, do: Process.get(@fast_ctx_key, @missing) + + def restore_fast_ctx(@missing), do: Process.delete(@fast_ctx_key) + def restore_fast_ctx(snapshot), do: Process.put(@fast_ctx_key, snapshot) + + def put_fast_ctx(ctx) do + current_func = Map.get(ctx, :current_func, :undefined) + home_object = Functions.current_home_object(current_func) + + Process.put( + @fast_ctx_key, + { + Map.get(ctx, :atoms, {}), + Map.get(ctx, :globals, %{}), + current_func, + Map.get(ctx, :arg_buf, {}), + Map.get(ctx, :this, :undefined), + Map.get(ctx, :new_target, :undefined), + home_object, + current_super(home_object) + } + ) + end + + @doc "Returns the raw fast-context tuple or the missing sentinel." + def fast_ctx, do: Process.get(@fast_ctx_key, @missing) + + def attach_method_state( + %Context{current_func: %Bytecode.Function{need_home_object: false}} = ctx + ), + do: ctx + + def attach_method_state( + %Context{current_func: {:closure, _, %Bytecode.Function{need_home_object: false}}} = ctx + ), + do: ctx + + def attach_method_state(%Context{current_func: current_func} = ctx) do + home_object = Functions.current_home_object(current_func) + + ctx + |> Map.merge(%{home_object: home_object, super: current_super(home_object)}) + |> Context.mark_dirty() + end + + @doc "Returns the active atom table from fast context, full context, or heap fallback." + def current_atoms do + case fast_ctx() do + {atoms, _globals, _current_func, _arg_buf, _this, _new_target, _home_object, _super} -> + atoms + + _ -> + case Heap.get_ctx() do + %{atoms: atoms} -> atoms + _ -> Heap.get_atoms() + end + end + end + + @doc "Returns active globals from fast context, full context, or runtime fallback." + def current_globals do + case fast_ctx() do + {_atoms, globals, _current_func, _arg_buf, _this, _new_target, _home_object, _super} -> + globals + + _ -> + case Heap.get_ctx() do + %{globals: globals} -> globals + _ -> Runtime.global_bindings() + end + end + end + + @doc "Returns the currently executing function value." + def current_func do + case fast_ctx() do + {_atoms, _globals, current_func, _arg_buf, _this, _new_target, _home_object, _super} -> + current_func + + _ -> + case Heap.get_ctx() do + %{current_func: current_func} -> current_func + _ -> :undefined + end + end + end + + @doc "Returns the current argument tuple used by compiled functions." + def current_arg_buf do + case fast_ctx() do + {_atoms, _globals, _current_func, arg_buf, _this, _new_target, _home_object, _super} -> + arg_buf + + _ -> + case Heap.get_ctx() do + %{arg_buf: arg_buf} -> arg_buf + _ -> {} + end + end + end + + @doc "Returns the active JavaScript `this` value." + def current_this do + case fast_ctx() do + {_atoms, _globals, _current_func, _arg_buf, this, _new_target, _home_object, _super} -> + this + + _ -> + case Heap.get_ctx() do + %{this: this} -> this + _ -> :undefined + end + end + end + + @doc "Returns the active JavaScript `new.target` value." + def current_new_target do + case fast_ctx() do + {_atoms, _globals, _current_func, _arg_buf, _this, new_target, _home_object, _super} -> + new_target + + _ -> + case Heap.get_ctx() do + %{new_target: new_target} -> new_target + _ -> :undefined + end + end + end + + @doc "Returns the current method home object used for `super` lookup." + def current_home_object(current_func \\ current_func()) + + def current_home_object(%Bytecode.Function{need_home_object: false}), do: :undefined + + def current_home_object({:closure, _, %Bytecode.Function{need_home_object: false}}), + do: :undefined + + def current_home_object(current_func) do + case fast_ctx() do + {_atoms, _globals, _current_func, _arg_buf, _this, _new_target, home_object, _super} -> + home_object + + _ -> + Functions.current_home_object(current_func) + end + end + + @doc "Returns the current superclass/prototype target used for `super` lookup." + def current_super(home_object \\ current_home_object()) + def current_super(:undefined), do: :undefined + def current_super(nil), do: :undefined + + def current_super(home_object) do + case fast_ctx() do + {_atoms, _globals, _current_func, _arg_buf, _this, _new_target, cached_home_object, super} + when cached_home_object == home_object -> + super + + _ -> + Class.get_super(home_object) + end + end + + @doc "Returns the sentinel used when no fast context is installed." + def missing, do: @missing +end diff --git a/lib/quickbeam/vm/js_throw.ex b/lib/quickbeam/vm/js_throw.ex new file mode 100644 index 000000000..313830d3e --- /dev/null +++ b/lib/quickbeam/vm/js_throw.ex @@ -0,0 +1,15 @@ +defmodule QuickBEAM.VM.JSThrow do + @moduledoc "Helpers for throwing JS errors from the BEAM VM." + + alias QuickBEAM.VM.Heap + + @doc "Throws a JavaScript `TypeError` with the given message." + def type_error!(message), do: throw({:js_throw, Heap.make_error(message, "TypeError")}) + + def reference_error!(message), + do: throw({:js_throw, Heap.make_error(message, "ReferenceError")}) + + def range_error!(message), do: throw({:js_throw, Heap.make_error(message, "RangeError")}) + def syntax_error!(message), do: throw({:js_throw, Heap.make_error(message, "SyntaxError")}) + def error!(message), do: throw({:js_throw, Heap.make_error(message, "Error")}) +end diff --git a/lib/quickbeam/vm/leb128.ex b/lib/quickbeam/vm/leb128.ex new file mode 100644 index 000000000..fc63e0100 --- /dev/null +++ b/lib/quickbeam/vm/leb128.ex @@ -0,0 +1,66 @@ +defmodule QuickBEAM.VM.LEB128 do + @moduledoc "LEB128 integer encoding/decoding for QuickJS bytecode parsing." + import Bitwise + + @spec read_unsigned(binary()) :: {:ok, non_neg_integer(), binary()} | {:error, :bad_leb128} + @doc "Reads an unsigned LEB128 integer from a binary." + def read_unsigned(<>), do: read_unsigned(rest, 0, 0) + + defp read_unsigned(<<1::1, value::7, rest::binary>>, acc, shift) when shift < 64 do + read_unsigned(rest, acc + (value <<< shift), shift + 7) + end + + defp read_unsigned(<<0::1, value::7, rest::binary>>, acc, shift) do + {:ok, acc + (value <<< shift), rest} + end + + defp read_unsigned(_, _, _), do: {:error, :bad_leb128} + + @spec read_signed(binary()) :: {:ok, integer(), binary()} | {:error, :bad_sleb128} + @doc "Reads a signed LEB128 integer from a binary." + def read_signed(<>), do: read_signed(rest, 0, 0) + + defp read_signed(<<1::1, value::7, rest::binary>>, acc, shift) when shift < 64 do + read_signed(rest, acc + (value <<< shift), shift + 7) + end + + defp read_signed(<<0::1, value::7, rest::binary>>, acc, shift) do + result = acc + (value <<< shift) + # Sign extend if the last byte's high bit is set + size = shift + 7 + # Sign-extend: shift left to put sign bit at position 63, then arithmetic shift right + {:ok, (result <<< (64 - size)) >>> (64 - size), rest} + end + + defp read_signed(_, _, _), do: {:error, :bad_sleb128} + + @spec read_u16(binary()) :: {:ok, non_neg_integer(), binary()} | {:error, term()} + @doc "Reads an unsigned 16-bit little-endian integer from a binary." + def read_u16(bin) do + with {:ok, val, rest} <- read_unsigned(bin) do + {:ok, band(val, 0xFFFF), rest} + end + end + + @spec read_u8(binary()) :: {:ok, byte(), binary()} | {:error, :unexpected_end} + @doc "Reads an unsigned 8-bit integer from a binary." + def read_u8(<>), do: {:ok, val, rest} + def read_u8(_), do: {:error, :unexpected_end} + + @spec read_u32(binary()) :: {:ok, non_neg_integer(), binary()} | {:error, term()} + @doc "Reads an unsigned 32-bit little-endian integer from a binary." + def read_u32(bin) do + with {:ok, val, rest} <- read_unsigned(bin) do + {:ok, band(val, 0xFFFFFFFF), rest} + end + end + + @spec read_u64(binary()) :: {:ok, non_neg_integer(), binary()} | {:error, term()} + @doc "Reads an unsigned 64-bit little-endian integer from a binary." + def read_u64(<>), do: {:ok, val, rest} + def read_u64(_), do: {:error, :unexpected_end} + + @spec read_i32(binary()) :: {:ok, integer(), binary()} | {:error, term()} + @doc "Reads a signed 32-bit little-endian integer from a binary." + def read_i32(bin), do: read_signed(bin) +end diff --git a/lib/quickbeam/vm/names.ex b/lib/quickbeam/vm/names.ex new file mode 100644 index 000000000..b113b91f6 --- /dev/null +++ b/lib/quickbeam/vm/names.ex @@ -0,0 +1,81 @@ +defmodule QuickBEAM.VM.Names do + @moduledoc "Atom-pool resolution: maps bytecode constant indices to JS atom strings and resolves display names." + + alias QuickBEAM.VM.{Bytecode, Heap, PredefinedAtoms} + alias QuickBEAM.VM.Interpreter.Context + alias QuickBEAM.VM.Interpreter.Values + + @js_atom_end QuickBEAM.VM.Opcodes.js_atom_end() + + @doc "Resolves a bytecode constant-pool entry into a VM value." + def resolve_const(cpool, idx) when is_tuple(cpool) and idx < tuple_size(cpool) do + case elem(cpool, idx) do + {:array, list} when is_list(list) -> + ref = make_ref() + Heap.put_obj(ref, list) + {:obj, ref} + + other -> + other + end + end + + def resolve_const(_cpool, idx), do: {:const_ref, idx} + + @doc "Resolves an atom-table index or tagged atom reference into a JavaScript property name." + def resolve_atom(%Context{atoms: atoms}, idx), do: resolve_atom(atoms, idx) + + def resolve_atom(_atoms, :empty_string), do: "" + + def resolve_atom(_atoms, {:predefined, idx}) when idx < @js_atom_end do + PredefinedAtoms.lookup(idx) || "atom_#{idx}" + end + + def resolve_atom(_atoms, {:tagged_int, val}), do: val + + def resolve_atom(atoms, idx) when is_integer(idx) and idx >= 0 and is_tuple(atoms) do + if idx < tuple_size(atoms), do: elem(atoms, idx), else: {:atom, idx} + end + + def resolve_atom(_atoms, other) when is_binary(other), do: other + def resolve_atom(_atoms, other) when is_integer(other), do: Integer.to_string(other) + def resolve_atom(_atoms, {:atom, n}), do: "atom_#{n}" + def resolve_atom(_atoms, other), do: inspect(other) + + @doc "Resolves an optional display name for functions and diagnostics." + def resolve_display_name(name, atoms \\ Heap.get_atoms()) + + def resolve_display_name(name, _atoms) when is_binary(name), do: name + def resolve_display_name({:predefined, idx}, _atoms), do: PredefinedAtoms.lookup(idx) + def resolve_display_name(idx, atoms) when is_integer(idx), do: resolve_atom(atoms, idx) + def resolve_display_name(_name, _atoms), do: nil + + def function_name(name_val) do + case name_val do + s when is_binary(s) -> s + n when is_number(n) -> Values.stringify(n) + {:symbol, desc, _} -> "[" <> desc <> "]" + {:symbol, desc} -> "[" <> desc <> "]" + _ -> "" + end + end + + @doc "Returns a function-like value with updated name metadata." + def rename_function({:closure, captured, %Bytecode.Function{} = fun}, name), + do: {:closure, captured, %{fun | name: name}} + + def rename_function(%Bytecode.Function{} = fun, name), do: %{fun | name: name} + def rename_function({:builtin, _, cb}, name), do: {:builtin, name, cb} + def rename_function(other, _name), do: other + + def normalize_property_key(idx) do + case idx do + i when is_integer(i) -> Integer.to_string(i) + {:symbol, _} = sym -> sym + {:symbol, _, _} = sym -> sym + s when is_binary(s) -> s + other when is_number(other) -> Kernel.to_string(other) + other -> QuickBEAM.VM.Interpreter.Values.stringify(other) + end + end +end diff --git a/lib/quickbeam/vm/object_model/class.ex b/lib/quickbeam/vm/object_model/class.ex new file mode 100644 index 000000000..8b012af4d --- /dev/null +++ b/lib/quickbeam/vm/object_model/class.ex @@ -0,0 +1,190 @@ +defmodule QuickBEAM.VM.ObjectModel.Class do + @moduledoc "Class runtime support: `super` resolution, constructor dispatch, and `extends` prototype wiring." + + import QuickBEAM.VM.Heap.Keys, only: [proto: 0] + + alias QuickBEAM.VM.{Bytecode, Heap} + alias QuickBEAM.VM.Invocation + alias QuickBEAM.VM.Names + alias QuickBEAM.VM.ObjectModel.{Functions, Get, Put} + + @doc "Returns the superclass/prototype target associated with a class, method, or constructor value." + def get_super(func) do + case func do + {:obj, ref} -> + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> Map.get(map, proto(), :undefined) + _ -> :undefined + end + + {:closure, _, %Bytecode.Function{} = fun} -> + Heap.get_parent_ctor(fun) || :undefined + + %Bytecode.Function{} = fun -> + Heap.get_parent_ctor(fun) || :undefined + + {:builtin, _, _} = builtin -> + Map.get(Heap.get_ctor_statics(builtin), "__proto__", :undefined) + + _ -> + :undefined + end + end + + @doc "Applies JavaScript constructor return rules by keeping object-like returns and otherwise preserving `this`." + def coalesce_this_result(result, this_obj) do + case result do + {:obj, _} = obj -> obj + %Bytecode.Function{} = fun -> fun + {:closure, _, %Bytecode.Function{}} = closure -> closure + _ -> this_obj + end + end + + @doc "Extracts the underlying bytecode function from closure values." + def raw_function({:closure, _, %Bytecode.Function{} = fun}), do: fun + def raw_function(%Bytecode.Function{} = fun), do: fun + def raw_function(other), do: other + + def define_class(ctor_closure, parent_ctor, class_name \\ nil) do + ctor_closure = + if is_binary(class_name) and class_name != "" do + Functions.rename(ctor_closure, class_name) + else + ctor_closure + end + + raw = raw_function(ctor_closure) + proto_ref = make_ref() + proto_map = %{"constructor" => ctor_closure} + parent_proto = Heap.get_class_proto(parent_ctor) + base_proto = parent_proto || Heap.get_object_prototype() + proto_map = if base_proto, do: Map.put(proto_map, proto(), base_proto), else: proto_map + + Heap.put_obj(proto_ref, proto_map) + + Heap.put_prop_desc(proto_ref, "constructor", %{ + writable: true, + enumerable: false, + configurable: true + }) + + proto_obj = {:obj, proto_ref} + Heap.put_class_proto(raw, proto_obj) + Heap.put_ctor_statics(ctor_closure, %{"prototype" => proto_obj}) + + if parent_ctor != :undefined do + Heap.put_parent_ctor(raw, parent_ctor) + else + Heap.delete_parent_ctor(raw) + end + + {proto_obj, ctor_closure} + end + + @doc "Classifies an explicit constructor return value according to JavaScript class semantics." + def check_ctor_return(val) do + cond do + val == :undefined -> {true, val} + object_like?(val) -> {false, val} + true -> :error + end + end + + @doc "Reads a property through the `super` lookup path using `this` as the getter receiver." + def get_super_value(proto_obj, this_obj, key) do + case find_super_property(proto_obj, key) do + {:accessor, getter, _} when getter != nil -> + Invocation.invoke_with_receiver(getter, [], this_obj) + + :undefined -> + :undefined + + val -> + val + end + end + + @doc "Writes a property through the `super` lookup path using `this` as the setter receiver." + def put_super_value(proto_obj, this_obj, key, val) do + case find_super_setter(proto_obj, key) do + nil -> Put.put(this_obj, key, val) + setter -> Invocation.invoke_with_receiver(setter, [val], this_obj) + end + + :ok + end + + @doc "Defines an unnamed class with a constructor name resolved from the atom table." + def define_class_name(ctor_closure, atom_idx, atoms \\ Heap.get_atoms()) do + define_class(ctor_closure, :undefined, Names.resolve_atom(atoms, atom_idx)) + end + + defp object_like?({:obj, _}), do: true + defp object_like?(%Bytecode.Function{}), do: true + defp object_like?({:closure, _, %Bytecode.Function{}}), do: true + defp object_like?({:builtin, _, _}), do: true + defp object_like?({:bound, _, _, _, _}), do: true + defp object_like?(_), do: false + + defp find_super_setter(proto_obj, key) do + case find_super_property(proto_obj, key) do + {:accessor, _, setter} when setter != nil -> setter + _ -> nil + end + end + + defp find_super_property({:obj, ref}, key) do + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> + case Map.fetch(map, key) do + {:ok, val} -> val + :error -> find_super_property(Map.get(map, proto(), :undefined), key) + end + + _ -> + Get.get({:obj, ref}, key) + end + end + + defp find_super_property({:closure, _, %Bytecode.Function{} = fun} = ctor, key) do + statics = Heap.get_ctor_statics(ctor) + + case Map.fetch(statics, key) do + {:ok, val} -> + val + + :error -> + find_super_property( + Heap.get_parent_ctor(fun) || Map.get(statics, "__proto__", :undefined), + key + ) + end + end + + defp find_super_property(%Bytecode.Function{} = fun, key) do + statics = Heap.get_ctor_statics(fun) + + case Map.fetch(statics, key) do + {:ok, val} -> + val + + :error -> + find_super_property( + Heap.get_parent_ctor(fun) || Map.get(statics, "__proto__", :undefined), + key + ) + end + end + + defp find_super_property({:builtin, _, _} = ctor, key) do + statics = Heap.get_ctor_statics(ctor) + + case Map.fetch(statics, key) do + {:ok, val} -> val + :error -> find_super_property(Map.get(statics, "__proto__", :undefined), key) + end + end + + defp find_super_property(value, key), do: Get.get(value, key) +end diff --git a/lib/quickbeam/vm/object_model/copy.ex b/lib/quickbeam/vm/object_model/copy.ex new file mode 100644 index 000000000..83387fa4d --- /dev/null +++ b/lib/quickbeam/vm/object_model/copy.ex @@ -0,0 +1,260 @@ +defmodule QuickBEAM.VM.ObjectModel.Copy do + @moduledoc "Object spread and property copying: `append_spread`, `copy_data_properties`, and array/iterator flattening." + + import QuickBEAM.VM.Heap.Keys, + only: [key_order: 0, map_data: 0, proto: 0, proxy_handler: 0, proxy_target: 0, set_data: 0] + + alias QuickBEAM.VM.{Heap, Runtime} + alias QuickBEAM.VM.ObjectModel.Get + + @doc "Appends values from a spread source into an array-like target and returns the next index." + def append_spread(arr, idx, obj) do + src_list = spread_source_to_list(obj) + arr_list = spread_target_to_list(arr) + new_idx = if(is_integer(idx), do: idx, else: Runtime.to_int(idx)) + length(src_list) + merged = arr_list ++ src_list + + merged_obj = + case arr do + {:obj, ref} -> + Heap.put_obj(ref, merged) + {:obj, ref} + + _ -> + merged + end + + {new_idx, merged_obj} + end + + @doc "Copies enumerable string properties from a source object to a target object." + def copy_data_properties(target, source, exclude \\ nil) do + src_props = enumerable_string_props(source) + + src_props = + case exclude do + {:obj, eref} -> + exclude_keys = + case Heap.get_obj(eref) do + {:qb_arr, arr} -> :array.to_list(arr) |> Enum.map(&to_string/1) + list when is_list(list) -> Enum.map(list, &to_string/1) + map when is_map(map) -> Map.keys(map) |> Enum.filter(&is_binary/1) + _ -> [] + end + + Map.drop(src_props, exclude_keys) + + _ -> + src_props + end + + case target do + {:obj, ref} -> + existing = Heap.get_obj(ref, %{}) + existing = if is_map(existing), do: existing, else: %{} + merged = Map.merge(existing, src_props) + + merged = + case Map.get(merged, key_order()) do + order when is_list(order) -> + new_keys = Map.keys(src_props) -- Enum.map(order, &to_string/1) + Map.put(merged, key_order(), Enum.reverse(new_keys) ++ order) + + _ -> + merged + end + + Heap.put_obj(ref, merged) + + _ -> + :ok + end + + :ok + end + + @doc "Returns enumerable own string properties as a map of property names to values." + def enumerable_string_props({:obj, ref} = source_obj) do + case Heap.get_obj_raw(ref) do + {:shape, shape_id, _offsets, vals, _proto} -> + map = Heap.Shapes.to_map(shape_id, vals, nil) + resolve_accessors(map, source_obj) + + {:qb_arr, _} -> + Enum.reduce(0..max(Heap.array_size(ref) - 1, 0), %{}, fn i, acc -> + Map.put(acc, Integer.to_string(i), Get.get(source_obj, Integer.to_string(i))) + end) + + list when is_list(list) -> + Enum.reduce(0..max(length(list) - 1, 0), %{}, fn i, acc -> + Map.put(acc, Integer.to_string(i), Get.get(source_obj, Integer.to_string(i))) + end) + + map when is_map(map) -> + map + |> Map.keys() + |> Enum.filter(&is_binary/1) + |> Enum.reject(fn key -> + String.starts_with?(key, "__") and String.ends_with?(key, "__") + end) + |> Enum.reduce(%{}, fn key, acc -> Map.put(acc, key, Get.get(source_obj, key)) end) + + _ -> + %{} + end + end + + def enumerable_string_props(map) when is_map(map), do: map + def enumerable_string_props(_), do: %{} + + defp resolve_accessors(map, obj) do + Map.new(map, fn + {k, {:accessor, getter, _}} when getter != nil -> {k, Get.call_getter(getter, obj)} + pair -> pair + end) + end + + @doc "Returns enumerable property keys in JavaScript enumeration order." + def enumerable_keys({:obj, ref} = obj) do + case Heap.get_obj_raw(ref) do + {:shape, shape_id, _offsets, _vals, proto} -> + own_keys = Heap.Shapes.keys(shape_id) |> Enum.filter(&enumerable_key_candidate?/1) + proto_keys = enumerable_proto_keys(proto) + Runtime.sort_numeric_keys(own_keys ++ Enum.reject(proto_keys, &(&1 in own_keys))) + + raw -> + enumerable_keys_from_raw(obj, ref, raw) + end + end + + def enumerable_keys(map) when is_map(map) do + map + |> Map.keys() + |> Enum.filter(&is_binary/1) + |> Enum.reject(fn key -> String.starts_with?(key, "__") and String.ends_with?(key, "__") end) + |> Runtime.sort_numeric_keys() + end + + def enumerable_keys(list) when is_list(list), do: numeric_index_keys(length(list)) + + def enumerable_keys(string) when is_binary(string), + do: numeric_index_keys(Get.string_length(string)) + + def enumerable_keys(_), do: [] + + defp enumerable_keys_from_raw(obj, ref, raw) do + case raw || %{} do + %{proxy_target() => _target, proxy_handler() => handler} -> + own_keys_fn = Get.get(handler, "ownKeys") + + if own_keys_fn != :undefined and own_keys_fn != nil do + result = Runtime.call_callback(own_keys_fn, [obj]) + Heap.to_list(result) |> Enum.map(&to_string/1) + else + [] + end + + {:qb_arr, arr} -> + numeric_index_keys(:array.size(arr)) + + list when is_list(list) -> + numeric_index_keys(length(list)) + + map when is_map(map) -> + own_keys = enumerable_object_keys(map, ref) + all_own = Map.keys(map) |> Enum.filter(&is_binary/1) + proto_keys = enumerable_proto_keys(Map.get(map, proto())) + Runtime.sort_numeric_keys(own_keys ++ Enum.reject(proto_keys, &(&1 in all_own))) + + _ -> + [] + end + end + + @doc "Converts a spread source value into the list of values to append." + def spread_source_to_list({:qb_arr, arr}), do: :array.to_list(arr) + def spread_source_to_list(list) when is_list(list), do: list + + def spread_source_to_list({:obj, ref}) do + case Heap.get_obj(ref) do + {:qb_arr, arr} -> + :array.to_list(arr) + + list when is_list(list) -> + list + + map when is_map(map) -> + cond do + Map.has_key?(map, {:symbol, "Symbol.iterator"}) -> + iter_fn = Map.get(map, {:symbol, "Symbol.iterator"}) + iter_obj = Runtime.call_callback(iter_fn, []) + collect_iterator_values(iter_obj, []) + + Map.has_key?(map, set_data()) -> + Map.get(map, set_data(), []) + + Map.has_key?(map, map_data()) -> + Map.get(map, map_data(), []) + + true -> + [] + end + + _ -> + [] + end + end + + def spread_source_to_list(_), do: [] + + @doc "Converts a spread target value into its current list representation." + def spread_target_to_list({:qb_arr, arr}), do: :array.to_list(arr) + def spread_target_to_list(list) when is_list(list), do: list + def spread_target_to_list({:obj, _} = obj), do: Heap.to_list(obj) + def spread_target_to_list(_), do: [] + + defp collect_iterator_values(iter_obj, acc) do + next_fn = Get.get(iter_obj, "next") + result = Runtime.call_callback(next_fn, []) + + if Get.get(result, "done") do + Enum.reverse(acc) + else + collect_iterator_values(iter_obj, [Get.get(result, "value") | acc]) + end + end + + defp enumerable_object_keys(map, ref) do + raw_keys = + case Map.get(map, key_order()) do + order when is_list(order) -> Enum.reverse(order) + _ -> Map.keys(map) + end + + raw_keys + |> Enum.filter(&enumerable_key_candidate?/1) + |> Enum.reject(fn key -> match?(%{enumerable: false}, Heap.get_prop_desc(ref, key)) end) + end + + defp enumerable_proto_keys({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> + own_keys = enumerable_object_keys(map, ref) + parent_keys = enumerable_proto_keys(Map.get(map, proto())) + own_keys ++ Enum.reject(parent_keys, &(&1 in own_keys)) + + _ -> + [] + end + end + + defp enumerable_proto_keys(_), do: [] + + defp enumerable_key_candidate?(key) when is_binary(key), + do: not (String.starts_with?(key, "__") and String.ends_with?(key, "__")) + + defp enumerable_key_candidate?(_), do: false + + defp numeric_index_keys(size) when size <= 0, do: [] + defp numeric_index_keys(size), do: Enum.map(0..(size - 1), &Integer.to_string/1) +end diff --git a/lib/quickbeam/vm/object_model/delete.ex b/lib/quickbeam/vm/object_model/delete.ex new file mode 100644 index 000000000..661595b85 --- /dev/null +++ b/lib/quickbeam/vm/object_model/delete.ex @@ -0,0 +1,42 @@ +defmodule QuickBEAM.VM.ObjectModel.Delete do + @moduledoc "Implements JavaScript [[Delete]] semantics for VM values." + + alias QuickBEAM.VM.Heap + + @doc "Deletes a property according to JavaScript delete semantics." + def delete_property(nil, key) do + throw( + {:js_throw, + Heap.make_error("Cannot delete properties of null (deleting '#{key}')", "TypeError")} + ) + end + + def delete_property(:undefined, key) do + throw( + {:js_throw, + Heap.make_error( + "Cannot delete properties of undefined (deleting '#{key}')", + "TypeError" + )} + ) + end + + def delete_property({:obj, ref}, key) do + map = Heap.get_obj(ref, %{}) + + if is_map(map) do + desc = Heap.get_prop_desc(ref, key) + + if match?(%{configurable: false}, desc) do + false + else + Heap.put_obj(ref, Map.delete(map, key)) + true + end + else + true + end + end + + def delete_property(_obj, _key), do: true +end diff --git a/lib/quickbeam/vm/object_model/functions.ex b/lib/quickbeam/vm/object_model/functions.ex new file mode 100644 index 000000000..8a8ddb6d0 --- /dev/null +++ b/lib/quickbeam/vm/object_model/functions.ex @@ -0,0 +1,43 @@ +defmodule QuickBEAM.VM.ObjectModel.Functions do + @moduledoc "Function object helpers for names, home objects, and super method dispatch metadata." + + alias QuickBEAM.VM.{Bytecode, Heap, Names} + alias QuickBEAM.VM.Heap.Caches + + @doc "Converts a JavaScript property name value into a function display name." + def function_name(name_val), do: Names.function_name(name_val) + @doc "Returns a function value with its JavaScript name metadata updated." + def rename(fun, name), do: Names.rename_function(fun, name) + + @doc "Sets a function name from an atom-table index." + def set_name_atom(fun, atom_idx, atoms \\ Heap.get_atoms()) do + rename(fun, Names.resolve_atom(atoms, atom_idx)) + end + + @doc "Sets a function name from a computed JavaScript property value." + def set_name_computed(fun, name_val), do: rename(fun, function_name(name_val)) + + @doc "Records the home object needed by methods that use `super`." + def put_home_object(method, target) do + if needs_home_object?(method) do + key = home_object_key(method) + if key != nil, do: Caches.put_home_object(key, target) + end + + method + end + + @doc "Looks up the home object associated with the current function." + def current_home_object(current_func) do + Caches.get_home_object(home_object_key(current_func)) + end + + @doc "Returns the stable cache key used for a function's home object." + def home_object_key({:closure, _, %Bytecode.Function{byte_code: byte_code}}), do: byte_code + def home_object_key(%Bytecode.Function{byte_code: byte_code}), do: byte_code + def home_object_key(_), do: nil + + defp needs_home_object?({:closure, _, %Bytecode.Function{need_home_object: true}}), do: true + defp needs_home_object?(%Bytecode.Function{need_home_object: true}), do: true + defp needs_home_object?(_), do: false +end diff --git a/lib/quickbeam/vm/object_model/get.ex b/lib/quickbeam/vm/object_model/get.ex new file mode 100644 index 000000000..fc7b5999e --- /dev/null +++ b/lib/quickbeam/vm/object_model/get.ex @@ -0,0 +1,500 @@ +defmodule QuickBEAM.VM.ObjectModel.Get do + @moduledoc "JS property resolution: own properties, prototype chain, getters." + + import Bitwise, only: [band: 2] + import QuickBEAM.VM.Heap.Keys + + alias QuickBEAM.VM.{Bytecode, Heap} + alias QuickBEAM.VM.Invocation + alias QuickBEAM.VM.Runtime + + alias QuickBEAM.VM.Runtime.{ + Array, + Boolean, + Function, + Number, + Object, + RegExp, + TypedArray + } + + alias QuickBEAM.VM.Runtime.Map, as: JSMap + alias QuickBEAM.VM.Runtime.Set, as: JSSet + + alias QuickBEAM.VM.ObjectModel.PropertyKey + alias QuickBEAM.VM.Runtime.ArrayBuffer + alias QuickBEAM.VM.Runtime.Date, as: JSDate + alias QuickBEAM.VM.Runtime.String, as: JSString + + @doc "Reads a JavaScript property, including own lookup, prototype lookup, and getter invocation." + def get(value, key) when is_binary(key) do + case get_own(value, key) do + :undefined -> + result = get_prototype_raw(value, key) + + case result do + {:accessor, getter, _} when getter != nil -> call_getter(getter, value) + _ -> result + end + + {:accessor, getter, _} when getter != nil -> + call_getter(getter, value) + + val -> + val + end + end + + def get(value, key) when is_integer(key), + do: get(value, Integer.to_string(key)) + + def get({:obj, ref} = value, {:symbol, _} = sym_key) do + data = Heap.get_obj_raw(ref) + + map_data = + case data do + map when is_map(map) -> map + {:shape, _, _, _, _} -> Heap.get_obj(ref, %{}) + _ -> %{} + end + + case is_map(map_data) && Map.get(map_data, sym_key) do + {:accessor, getter, _} when getter != nil -> call_getter(getter, value) + nil -> :undefined + false -> :undefined + val -> val + end + end + + def get(_, _), do: :undefined + + @doc "Invokes a getter function with the provided receiver." + def call_getter(fun, this_obj) do + Invocation.invoke_with_receiver(fun, [], this_obj) + end + + def regexp_flags(<>) do + [{1, "g"}, {2, "i"}, {4, "m"}, {8, "s"}, {16, "u"}, {32, "y"}] + |> Enum.reduce("", fn {bit, ch}, acc -> + if band(flags_byte, bit) != 0, do: acc <> ch, else: acc + end) + end + + def regexp_flags(_), do: "" + + @doc "Returns the JavaScript UTF-16 code-unit length of a string." + def string_length(s) do + if byte_size(s) == String.length(s) do + byte_size(s) + else + s + |> String.to_charlist() + |> Enum.reduce(0, fn cp, acc -> + if cp > 0xFFFF, do: acc + 2, else: acc + 1 + end) + end + end + + @doc "Returns the JavaScript `length` value for array-like, string, and function values." + def length_of(obj) do + case obj do + {:obj, ref} -> + case Heap.get_obj_raw(ref) do + {:shape, _, offsets, vals, _} -> + case Map.fetch(offsets, "length") do + {:ok, off} -> elem(vals, off) + :error -> map_size(offsets) + end + + {:qb_arr, arr} -> + :array.size(arr) + + list when is_list(list) -> + length(list) + + map when is_map(map) -> + Map.get(map, "length", map_size(map)) + + _ -> + 0 + end + + {:qb_arr, arr} -> + :array.size(arr) + + list when is_list(list) -> + length(list) + + string when is_binary(string) -> + string_length(string) + + %Bytecode.Function{} = fun -> + fun.defined_arg_count + + {:closure, _, %Bytecode.Function{} = fun} -> + fun.defined_arg_count + + {:bound, len, _, _, _} -> + len + + _ -> + :undefined + end + end + + # ── Own property lookup ── + + defp get_own({:obj, ref}, key) do + case Heap.get_obj_raw(ref) do + {:shape, _shape_id, _offsets, _vals, proto} when key == "__proto__" -> + if proto, do: proto, else: :undefined + + {:shape, _shape_id, offsets, vals, _proto} -> + case Map.fetch(offsets, key) do + {:ok, offset} -> elem(vals, offset) + :error -> :undefined + end + + nil -> + :undefined + + %{ + proxy_target() => target, + proxy_handler() => handler + } -> + get_trap = get_own(handler, "get") + + if get_trap != :undefined do + Runtime.call_callback(get_trap, [target, key]) + else + get_own(target, key) + end + + {:qb_arr, _} = arr -> + case Heap.get_regexp_result(ref) do + %{^key => val} -> val + _ -> get_own(arr, key) + end + + list when is_list(list) -> + case Heap.get_regexp_result(ref) do + %{^key => val} -> val + _ -> get_own(list, key) + end + + %{date_ms() => _} = map -> + case Map.get(map, key) do + nil -> JSDate.proto_property(key) + val -> val + end + + %{buffer() => _} = map -> + case Map.get(map, key) do + nil -> ArrayBuffer.proto_property(key) + val -> val + end + + map when is_map(map) -> + case Map.fetch(map, key) do + {:ok, {:accessor, getter, _setter}} when getter != nil -> + call_getter(getter, {:obj, ref}) + + {:ok, val} -> + val + + :error -> + case Map.get(map, "__wrapped_symbol__") do + sym when sym != nil -> get_own(sym, key) + _ -> :undefined + end + end + end + end + + defp get_own({:qb_arr, arr}, "length"), do: :array.size(arr) + + defp get_own({:qb_arr, arr}, key) when is_binary(key) do + case PropertyKey.array_index(key) do + {:ok, idx} -> + if idx < :array.size(arr), do: :array.get(idx, arr), else: :undefined + + :error -> + :undefined + end + end + + defp get_own(list, "length") when is_list(list), do: length(list) + + defp get_own(list, key) when is_list(list) and is_binary(key) do + case PropertyKey.array_index(key) do + {:ok, idx} -> Enum.at(list, idx, :undefined) + :error -> :undefined + end + end + + defp get_own(s, "length") when is_binary(s), do: string_length(s) + defp get_own(s, key) when is_binary(s), do: JSString.proto_property(key) + + defp get_own(n, _) when is_number(n), do: :undefined + defp get_own(true, _), do: :undefined + defp get_own(false, _), do: :undefined + defp get_own(nil, _), do: :undefined + defp get_own(:undefined, _), do: :undefined + + defp get_own({:builtin, _name, map} = b, key) when is_map(map) do + statics = Heap.get_ctor_statics(b) + + case Map.fetch(statics, key) do + {:ok, :deleted} -> :undefined + {:ok, val} -> val + :error -> Map.get(map, key, :undefined) + end + end + + defp get_own({:builtin, name, _}, "from") + when name in ~w(Uint8Array Int8Array Uint8ClampedArray Uint16Array Int16Array Uint32Array Int32Array Float32Array Float64Array) do + type = Map.get(TypedArray.types(), name, :uint8) + + {:builtin, "from", + fn [source | _], _this -> + list = Heap.to_list(source) + TypedArray.constructor(type).(list, nil) + end} + end + + defp get_own({:builtin, name, _}, "name"), do: name + + defp get_own({:builtin, _, _} = b, key) do + statics = Heap.get_ctor_statics(b) + + case Map.fetch(statics, key) do + {:ok, :deleted} -> + :undefined + + {:ok, val} -> + val + + :error -> + case Map.get(statics, :__module__) do + nil -> :undefined + mod -> mod.static_property(key) + end + end + end + + defp get_own({:regexp, bytecode, _source}, "flags"), do: regexp_flags(bytecode) + defp get_own({:regexp, _bytecode, source}, "source") when is_binary(source), do: source + + defp get_own({:regexp, _, _}, key), do: RegExp.proto_property(key) + + defp get_own(%Bytecode.Function{} = f, "prototype") do + Heap.get_or_create_prototype({:closure, %{}, f}) + end + + defp get_own(%Bytecode.Function{} = f, key) do + Map.get(Heap.get_ctor_statics(f), key, :undefined) + end + + defp get_own({:closure, _, %Bytecode.Function{}} = c, "prototype") do + case Map.get(Heap.get_ctor_statics(c), "prototype", :not_set) do + :not_set -> Heap.get_or_create_prototype(c) + {:accessor, getter, _} when getter != nil -> call_getter(getter, c) + val -> val + end + end + + defp get_own({:closure, _, %Bytecode.Function{} = f} = c, key) do + case Map.get(Heap.get_ctor_statics(c), key, :undefined) do + :undefined -> Map.get(Heap.get_ctor_statics(f), key, :undefined) + {:accessor, getter, _} when getter != nil -> call_getter(getter, c) + val -> val + end + end + + defp get_own({:bigint, n}, "toString"), + do: {:builtin, "toString", fn _, _ -> Integer.to_string(n) end} + + defp get_own({:bigint, n}, "valueOf"), + do: {:builtin, "valueOf", fn _, _ -> {:bigint, n} end} + + defp get_own({:bigint, _}, "toLocaleString"), + do: :undefined + + defp get_own({:symbol, desc}, "toString"), + do: {:builtin, "toString", fn _, _ -> "Symbol(#{desc})" end} + + defp get_own({:symbol, desc, _}, "toString"), + do: {:builtin, "toString", fn _, _ -> "Symbol(#{desc})" end} + + defp get_own({:symbol, _} = s, "valueOf"), do: {:builtin, "valueOf", fn _, _ -> s end} + defp get_own({:symbol, _, _} = s, "valueOf"), do: {:builtin, "valueOf", fn _, _ -> s end} + defp get_own({:symbol, desc}, "description"), do: desc + defp get_own({:symbol, desc, _}, "description"), do: desc + defp get_own({:bound, _, _, _, _} = b, key), do: Function.proto_property(b, key) + defp get_own(_, _), do: :undefined + + # ── Prototype chain ── + + defp get_prototype_raw({:obj, ref}, key) do + case Heap.get_obj_raw(ref) do + {:shape, _shape_id, _offsets, _vals, proto} -> + case proto do + {:obj, pref} -> + case Heap.get_obj_raw(pref) do + {:shape, _proto_shape_id, proto_offsets, proto_vals, _proto_next} -> + case Map.fetch(proto_offsets, key) do + {:ok, offset} -> elem(proto_vals, offset) + :error -> get_prototype_raw(proto, key) + end + + pmap when is_map(pmap) -> + case Map.fetch(pmap, key) do + {:ok, val} -> val + :error -> get_prototype_raw(proto, key) + end + + _ -> + get_prototype_raw(proto, key) + end + + _ -> + get_from_prototype(proto, key) + end + + map when is_map(map) and is_map_key(map, proto()) -> + # For type-specialized objects (Map, Set, Date, etc.), check type methods first. + type_result = + cond do + Map.has_key?(map, map_data()) -> + JSMap.proto_property(key) + + Map.has_key?(map, set_data()) -> + JSSet.proto_property(key) + + Map.has_key?(map, date_ms()) -> + JSDate.proto_property(key) + + Map.has_key?(map, buffer()) and not Map.has_key?(map, typed_array()) -> + ArrayBuffer.proto_property(key) + + true -> + :undefined + end + + if type_result != :undefined do + type_result + else + proto = Map.get(map, proto()) + + case proto do + {:obj, pref} -> + pmap = Heap.get_obj(pref, %{}) + + if is_map(pmap) do + case Map.get(pmap, key, :undefined) do + :undefined -> get_prototype_raw(proto, key) + val -> val + end + else + get_from_prototype(proto, key) + end + + _ -> + get_from_prototype(proto, key) + end + end + + _ -> + get_from_prototype({:obj, ref}, key) + end + end + + defp get_prototype_raw(value, key), do: get_from_prototype(value, key) + + defp get_from_prototype({:obj, ref}, key) do + case Heap.get_obj(ref) do + {:qb_arr, _} -> + Array.proto_property(key) + + list when is_list(list) -> + Array.proto_property(key) + + map when is_map(map) -> + cond do + Map.has_key?(map, map_data()) -> + JSMap.proto_property(key) + + Map.has_key?(map, set_data()) -> + JSSet.proto_property(key) + + Map.has_key?(map, proto()) -> + get(Map.get(map, proto()), key) + + true -> + :undefined + end + + _ -> + :undefined + end + end + + defp get_from_prototype({:qb_arr, _}, "constructor") do + Map.get(Runtime.global_bindings(), "Array", :undefined) + end + + defp get_from_prototype({:qb_arr, _}, key), do: Array.proto_property(key) + + defp get_from_prototype(list, "constructor") when is_list(list) do + Map.get(Runtime.global_bindings(), "Array", :undefined) + end + + defp get_from_prototype(list, key) when is_list(list), do: Array.proto_property(key) + defp get_from_prototype(s, key) when is_binary(s), do: JSString.proto_property(key) + defp get_from_prototype(n, key) when is_number(n), do: Number.proto_property(key) + defp get_from_prototype(true, key), do: Boolean.proto_property(key) + defp get_from_prototype(false, key), do: Boolean.proto_property(key) + + defp get_from_prototype(%Bytecode.Function{} = f, key) when key in ["length", "name"], + do: Function.proto_property(f, key) + + defp get_from_prototype(%Bytecode.Function{} = f, key) do + case Heap.get_parent_ctor(f) do + nil -> Function.proto_property(f, key) + parent -> fallback_to_function_proto(get(parent, key), f, key) + end + end + + defp get_from_prototype({:closure, _, %Bytecode.Function{}} = c, key) + when key in ["length", "name"], + do: Function.proto_property(c, key) + + defp get_from_prototype({:closure, _, %Bytecode.Function{} = f} = c, key) do + case Heap.get_parent_ctor(f) do + nil -> Function.proto_property(c, key) + parent -> fallback_to_function_proto(get(parent, key), c, key) + end + end + + defp get_from_prototype({:builtin, "Error", _}, _key), + do: :undefined + + defp get_from_prototype({:builtin, "Array", _}, key), do: Array.static_property(key) + defp get_from_prototype({:builtin, "Object", _}, key), do: Object.static_property(key) + defp get_from_prototype({:builtin, "Map", _}, _key), do: :undefined + defp get_from_prototype({:builtin, "Set", _}, _key), do: :undefined + + defp get_from_prototype({:builtin, "Number", _}, key), + do: Number.static_property(key) + + defp get_from_prototype({:builtin, "String", _}, key), + do: JSString.static_property(key) + + defp get_from_prototype({:builtin, name, _} = fun, key) when is_binary(name), + do: Function.proto_property(fun, key) + + defp get_from_prototype(_, _), do: :undefined + + defp fallback_to_function_proto(:undefined, fun, key), do: Function.proto_property(fun, key) + defp fallback_to_function_proto(val, _fun, _key), do: val +end diff --git a/lib/quickbeam/vm/object_model/methods.ex b/lib/quickbeam/vm/object_model/methods.ex new file mode 100644 index 000000000..edc9f5da8 --- /dev/null +++ b/lib/quickbeam/vm/object_model/methods.ex @@ -0,0 +1,66 @@ +defmodule QuickBEAM.VM.ObjectModel.Methods do + @moduledoc "Method definition helpers: installs getters, setters, and regular methods on objects and classes." + + import Bitwise, only: [band: 2] + + alias QuickBEAM.VM.{Heap, Names} + alias QuickBEAM.VM.ObjectModel.{Functions, Put} + + @doc "Defines a named method, getter, or setter on a target object." + def define_method(target, method, name, flags) when is_binary(name) do + method_type = band(flags, 3) + enumerable = band(flags, 4) != 0 + + named_method = + Functions.rename( + method, + case method_type do + 1 -> "get " <> name + 2 -> "set " <> name + _ -> name + end + ) + + Functions.put_home_object(named_method, target) + + case method_type do + 1 -> Put.put_getter(target, name, named_method, enumerable) + 2 -> Put.put_setter(target, name, named_method, enumerable) + _ -> Put.put(target, name, named_method, enumerable) + end + + target + end + + def define_method(target, method, atom_idx, flags), + do: define_method(target, method, Names.resolve_atom(Heap.get_atoms(), atom_idx), flags) + + @doc "Defines a computed-name method, getter, or setter on a target object." + def define_method_computed(target, method, field_name, flags) do + method_type = band(flags, 3) + enumerable = band(flags, 4) != 0 + + named_method = + Functions.rename( + method, + case method_type do + 1 -> "get " <> Functions.function_name(field_name) + 2 -> "set " <> Functions.function_name(field_name) + _ -> Functions.function_name(field_name) + end + ) + + Functions.put_home_object(named_method, target) + + case method_type do + 1 -> Put.put_getter(target, field_name, named_method, enumerable) + 2 -> Put.put_setter(target, field_name, named_method, enumerable) + _ -> Put.put(target, field_name, named_method, enumerable) + end + + target + end + + @doc "Records the home object used by a method for `super` lookups." + def set_home_object(method, target), do: Functions.put_home_object(method, target) +end diff --git a/lib/quickbeam/vm/object_model/private.ex b/lib/quickbeam/vm/object_model/private.ex new file mode 100644 index 000000000..d008ee86c --- /dev/null +++ b/lib/quickbeam/vm/object_model/private.ex @@ -0,0 +1,131 @@ +defmodule QuickBEAM.VM.ObjectModel.Private do + @moduledoc "Private class fields and brand checks: get, put, and `in` operator support for `#field` syntax." + + import QuickBEAM.VM.Heap.Keys, only: [proto: 0] + + alias QuickBEAM.VM.{Bytecode, Heap} + alias QuickBEAM.VM.ObjectModel.Functions + + @doc "Creates an internal symbol for a JavaScript private name." + def private_symbol(name) when is_binary(name), do: {:private_symbol, name, make_ref()} + + def get_field({:obj, ref}, key) do + Map.get(Heap.get_obj(ref, %{}), {:private, key}, :missing) + end + + def get_field({:closure, _, %Bytecode.Function{}} = ctor, key), + do: Map.get(Heap.get_ctor_statics(ctor), {:private, key}, :missing) + + def get_field(%Bytecode.Function{} = ctor, key), + do: Map.get(Heap.get_ctor_statics(ctor), {:private, key}, :missing) + + def get_field({:builtin, _, _} = ctor, key), + do: Map.get(Heap.get_ctor_statics(ctor), {:private, key}, :missing) + + def get_field(_, _key), do: :missing + + @doc "Returns whether a target has a private field." + def has_field?(target, key), do: get_field(target, key) != :missing + + def has_brand?(target, brand), do: brand_match?(target, brand) + + def put_field!(target, key, val) do + if has_field?(target, key) do + define_field!(target, key, val) + else + :error + end + end + + @doc "Defines or overwrites a private field on an object or constructor." + def define_field!({:obj, ref}, key, val) do + Heap.update_obj(ref, %{}, &Map.put(&1, {:private, key}, val)) + :ok + end + + def define_field!({:closure, _, %Bytecode.Function{}} = ctor, key, val) do + Heap.put_ctor_static(ctor, {:private, key}, val) + :ok + end + + def define_field!(%Bytecode.Function{} = ctor, key, val) do + Heap.put_ctor_static(ctor, {:private, key}, val) + :ok + end + + def define_field!({:builtin, _, _} = ctor, key, val) do + Heap.put_ctor_static(ctor, {:private, key}, val) + :ok + end + + def define_field!(_, _key, _val), do: :error + + @doc "Returns the private brands attached to a target." + def brands({:obj, ref}), do: Map.get(Heap.get_obj(ref, %{}), :__brands__, []) + + def brands({:closure, _, %Bytecode.Function{}} = ctor), + do: Map.get(Heap.get_ctor_statics(ctor), :__brands__, []) + + def brands(%Bytecode.Function{} = ctor), + do: Map.get(Heap.get_ctor_statics(ctor), :__brands__, []) + + def brands({:builtin, _, _} = ctor), do: Map.get(Heap.get_ctor_statics(ctor), :__brands__, []) + def brands(_), do: [] + + @doc "Attaches a private brand to an object or constructor." + def add_brand({:obj, ref}, brand) do + Heap.update_obj(ref, %{}, fn map -> + existing = Map.get(map, :__brands__, []) + Map.put(map, :__brands__, [brand | existing]) + end) + + :ok + end + + def add_brand({:closure, _, %Bytecode.Function{}} = ctor, brand) do + add_ctor_brand(ctor, brand) + :ok + end + + def add_brand(%Bytecode.Function{} = ctor, brand) do + add_ctor_brand(ctor, brand) + :ok + end + + def add_brand({:builtin, _, _} = ctor, brand) do + add_ctor_brand(ctor, brand) + :ok + end + + def add_brand(_obj, _brand), do: :ok + + @doc "Checks that a target carries a private brand." + def ensure_brand(target, brand) do + if brand_match?(target, brand), do: :ok, else: :error + end + + def brand_error, do: Heap.make_error("invalid brand on object", "TypeError") + + defp brand_match?(target, brand) do + target_brands = brands(target) + home_object = Functions.current_home_object(brand) + + brand in target_brands or + (home_object not in [nil, :undefined] and + (home_object in target_brands or brand_home_match?(target, home_object))) + end + + defp brand_home_match?({:obj, ref}, home_object) do + parent = Map.get(Heap.get_obj(ref, %{}), proto(), :undefined) + parent == home_object or brand_home_match?(parent, home_object) + end + + defp brand_home_match?(:undefined, _home_object), do: false + defp brand_home_match?(nil, _home_object), do: false + defp brand_home_match?(_, _home_object), do: false + + defp add_ctor_brand(ctor, brand) do + existing = Map.get(Heap.get_ctor_statics(ctor), :__brands__, []) + Heap.put_ctor_static(ctor, :__brands__, [brand | existing]) + end +end diff --git a/lib/quickbeam/vm/object_model/property_key.ex b/lib/quickbeam/vm/object_model/property_key.ex new file mode 100644 index 000000000..2c6cf3d04 --- /dev/null +++ b/lib/quickbeam/vm/object_model/property_key.ex @@ -0,0 +1,29 @@ +defmodule QuickBEAM.VM.ObjectModel.PropertyKey do + @moduledoc "Property key normalization and classification for JS object model." + + import QuickBEAM.VM.Value, only: [is_symbol: 1] + + @doc "Normalize a JS value to a property key (string or symbol)." + def normalize(k) when is_binary(k), do: k + def normalize(k) when is_symbol(k), do: k + def normalize(k) when is_integer(k) and k >= 0, do: Integer.to_string(k) + def normalize(k) when is_float(k) and k == trunc(k) and k >= 0, do: Integer.to_string(trunc(k)) + def normalize(k) when is_float(k), do: QuickBEAM.VM.Interpreter.Values.stringify(k) + def normalize({:tagged_int, n}), do: Integer.to_string(n) + def normalize(k), do: k + + @doc "Check if a key is a symbol." + defguard is_symbol_key(k) when is_symbol(k) + + @doc "Try to parse a key as an array index." + def array_index(k) when is_integer(k) and k >= 0, do: {:ok, k} + + def array_index(k) when is_binary(k) do + case Integer.parse(k) do + {idx, ""} when idx >= 0 -> {:ok, idx} + _ -> :error + end + end + + def array_index(_), do: :error +end diff --git a/lib/quickbeam/vm/object_model/put.ex b/lib/quickbeam/vm/object_model/put.ex new file mode 100644 index 000000000..82764cbe9 --- /dev/null +++ b/lib/quickbeam/vm/object_model/put.ex @@ -0,0 +1,605 @@ +defmodule QuickBEAM.VM.ObjectModel.Put do + @moduledoc "Property write operations: set, define, and delete for JS objects, arrays, proxies, getters, and setters." + import QuickBEAM.VM.Heap.Keys + import QuickBEAM.VM.Value, only: [is_symbol: 1] + + alias QuickBEAM.VM.{Bytecode, Heap, Names, Runtime} + alias QuickBEAM.VM.Interpreter.Values + alias QuickBEAM.VM.Invocation + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.ObjectModel.{Get, PropertyKey} + + @compile {:inline, has_property: 2, get_element: 2, set_list_at: 3} + + defp shape_put(ref, shape_id, offsets, vals, proto, key, val) do + case Map.fetch(offsets, key) do + {:ok, offset} when offset < tuple_size(vals) -> + Process.put(ref, {:shape, shape_id, offsets, put_elem(vals, offset, val), proto}) + + {:ok, offset} -> + Process.put( + ref, + {:shape, shape_id, offsets, Heap.Shapes.put_val(vals, offset, val), proto} + ) + + :error -> + {new_shape_id, new_offsets, offset} = Heap.Shapes.transition(shape_id, key) + + new_vals = + if offset == tuple_size(vals), + do: :erlang.append_element(vals, val), + else: Heap.Shapes.put_val(vals, offset, val) + + Process.put(ref, {:shape, new_shape_id, new_offsets, new_vals, proto}) + end + end + + @doc "Writes a field using the fast shape path when possible." + def put_field({:obj, ref}, key, val) do + case Process.get(ref) do + {:shape, shape_id, offsets, vals, proto} -> + shape_put(ref, shape_id, offsets, vals, proto, key, val) + + _ -> + put({:obj, ref}, key, val) + end + end + + @doc "Writes a JavaScript property while respecting arrays, proxies, descriptors, accessors, and constructor statics." + def put({:obj, ref} = _obj, "length", val) do + case Heap.get_obj_raw(ref) do + {:shape, shape_id, offsets, vals, proto} -> + case Map.fetch(offsets, "length") do + {:ok, offset} -> + new_vals = Heap.Shapes.put_val(vals, offset, val) + Heap.put_obj_raw(ref, {:shape, shape_id, offsets, new_vals, proto}) + + :error -> + {new_shape_id, new_offsets, offset} = Heap.Shapes.transition(shape_id, "length") + new_vals = Heap.Shapes.put_val(vals, offset, val) + Heap.put_obj_raw(ref, {:shape, new_shape_id, new_offsets, new_vals, proto}) + end + + {:qb_arr, _} -> + new_len = Runtime.to_int(val) + list = Heap.obj_to_list(ref) + old_len = length(list) + + if new_len < old_len do + non_configurable_idx = + Enum.find(new_len..(old_len - 1), fn i -> + match?(%{configurable: false}, Heap.get_prop_desc(ref, Integer.to_string(i))) + end) + + if non_configurable_idx do + Heap.put_obj(ref, Enum.take(list, non_configurable_idx + 1)) + JSThrow.type_error!("Cannot delete property") + end + + Heap.put_obj(ref, Enum.take(list, new_len)) + else + padded = list ++ List.duplicate(:undefined, new_len - old_len) + Heap.put_obj(ref, padded) + end + + data when is_list(data) -> + new_len = Runtime.to_int(val) + list = data + old_len = length(list) + + if new_len < old_len do + non_configurable_idx = + Enum.find(new_len..(old_len - 1), fn i -> + match?(%{configurable: false}, Heap.get_prop_desc(ref, Integer.to_string(i))) + end) + + if non_configurable_idx do + Heap.put_obj(ref, Enum.take(list, non_configurable_idx + 1)) + JSThrow.type_error!("Cannot delete property") + end + + Heap.put_obj(ref, Enum.take(list, new_len)) + else + padded = list ++ List.duplicate(:undefined, new_len - old_len) + Heap.put_obj(ref, padded) + end + + map when is_map(map) -> + # Plain object: store "length" as a regular property + Heap.put_obj_key(ref, map, "length", val) + + _ -> + :ok + end + end + + def put({:obj, ref} = obj, key, val) do + key = normalize_key(key) + sync_global_this?(obj, key, val) + + case Heap.get_obj_raw(ref) do + {:shape, shape_id, offsets, vals, proto} -> + cond do + Heap.frozen?(ref) -> + :ok + + key == "__proto__" -> + Heap.put_obj_raw(ref, {:shape, shape_id, offsets, vals, val}) + + is_symbol(key) -> + map = Heap.Shapes.to_map(shape_id, vals, proto) + Heap.put_obj(ref, Map.put(map, key, val)) + + true -> + shape_put(ref, shape_id, offsets, vals, proto, key, val) + end + + %{ + proxy_target() => target, + proxy_handler() => handler + } -> + set_trap = Get.get(handler, "set") + + if set_trap != :undefined do + Runtime.call_callback(set_trap, [target, key, val]) + else + put(target, key, val) + end + + {:qb_arr, _} -> + put_array_key(ref, key, val) + + list when is_list(list) -> + put_array_key(ref, key, val) + + map when is_map(map) -> + cond do + Heap.frozen?(ref) -> + :ok + + not Map.has_key?(map, key) -> + Heap.put_obj_key(ref, map, key, val) + + match?({:accessor, _, setter} when setter != nil, Map.get(map, key)) -> + {:accessor, _, setter} = Map.get(map, key) + invoke_setter(setter, val, obj) + + match?(%{writable: false}, Heap.get_prop_desc(ref, key)) -> + :ok + + true -> + Heap.put_obj_key(ref, map, key, val) + end + + _ -> + :ok + end + end + + def put(%Bytecode.Function{} = f, key, val), do: Heap.put_ctor_static(f, key, val) + + def put({:closure, _, %Bytecode.Function{}} = c, key, val), + do: Heap.put_ctor_static(c, key, val) + + def put({:builtin, _, _} = b, key, val), do: Heap.put_ctor_static(b, key, val) + + def put(_, _, _), do: :ok + + def put(target, key, val, true), do: put(target, key, val) + + def put({:obj, ref}, key, val, false) do + case Heap.get_obj_raw(ref) do + {:shape, shape_id, offsets, vals, proto} -> + if not Heap.frozen?(ref) do + shape_put(ref, shape_id, offsets, vals, proto, key, val) + + Heap.put_prop_desc(ref, key, %{writable: true, enumerable: false, configurable: true}) + end + + :ok + + map when is_map(map) -> + if not Heap.frozen?(ref) do + Heap.put_obj(ref, Map.put(map, key, val)) + Heap.put_prop_desc(ref, key, %{writable: true, enumerable: false, configurable: true}) + end + + :ok + + _ -> + :ok + end + end + + def put(%Bytecode.Function{} = f, key, val, _enumerable), do: Heap.put_ctor_static(f, key, val) + + def put({:closure, _, %Bytecode.Function{}} = c, key, val, _enumerable), + do: Heap.put_ctor_static(c, key, val) + + def put({:builtin, _, _} = b, key, val, _enumerable), do: Heap.put_ctor_static(b, key, val) + + def put(_, _, _, _), do: :ok + + defp normalize_key(k), do: PropertyKey.normalize(k) + + defp put_array_key(ref, key, val) do + case key do + k when is_binary(k) -> + case PropertyKey.array_index(k) do + {:ok, idx} -> put_element({:obj, ref}, idx, val) + :error -> :ok + end + + k when is_integer(k) and k >= 0 -> + put_element({:obj, ref}, k, val) + + _ -> + :ok + end + end + + @doc "Defines or replaces a JavaScript getter property." + def put_getter({:obj, ref}, key, fun) do + update_getter(ref, key, fun) + end + + def put_getter(target, key, fun), do: Heap.put_ctor_static(target, key, {:accessor, fun, nil}) + + def put_getter(target, key, fun, true), do: put_getter(target, key, fun) + + def put_getter({:obj, ref}, key, fun, false) do + update_getter(ref, key, fun) + Heap.put_prop_desc(ref, key, %{enumerable: false, configurable: true}) + end + + def put_getter(target, key, fun, _enumerable), + do: Heap.put_ctor_static(target, key, {:accessor, fun, nil}) + + @doc "Defines or replaces a JavaScript setter property." + def put_setter({:obj, ref}, key, fun) do + update_setter(ref, key, fun) + end + + def put_setter(target, key, fun), do: Heap.put_ctor_static(target, key, {:accessor, nil, fun}) + + def put_setter(target, key, fun, true), do: put_setter(target, key, fun) + + def put_setter({:obj, ref}, key, fun, false) do + update_setter(ref, key, fun) + Heap.put_prop_desc(ref, key, %{enumerable: false, configurable: true}) + end + + def put_setter(target, key, fun, _enumerable), + do: Heap.put_ctor_static(target, key, {:accessor, nil, fun}) + + defp update_getter(ref, key, fun) do + Heap.update_obj(ref, %{}, fn map -> + desc = + case Map.get(map, key) do + {:accessor, _get, set} -> {:accessor, fun, set} + _ -> {:accessor, fun, nil} + end + + Map.put(map, key, desc) + end) + end + + defp update_setter(ref, key, fun) do + Heap.update_obj(ref, %{}, fn map -> + desc = + case Map.get(map, key) do + {:accessor, get, _set} -> {:accessor, get, fun} + _ -> {:accessor, nil, fun} + end + + Map.put(map, key, desc) + end) + end + + defp invoke_setter(fun, val, this_obj) do + Invocation.invoke_with_receiver(fun, [val], this_obj) + end + + defp proto_has_setter?(idx) do + case find_array_proto_accessor(Integer.to_string(idx)) do + {:accessor, _, setter} when setter != nil -> true + _ -> false + end + end + + defp invoke_proto_setter(obj, idx, val) do + case find_array_proto_accessor(Integer.to_string(idx)) do + {:accessor, _, setter} when setter != nil -> invoke_setter(setter, val, obj) + _ -> :ok + end + end + + defp find_array_proto_accessor(str_key) do + with %{globals: globals} <- Heap.get_ctx(), + array_ctor when array_ctor != nil <- Map.get(globals, "Array"), + {:obj, proto_ref} <- Map.get(Heap.get_ctor_statics(array_ctor), "prototype"), + map when is_map(map) <- Heap.get_obj(proto_ref, nil) do + Map.get(map, str_key) + else + _ -> nil + end + end + + @doc "Returns whether a value has a property in its own or prototype chain." + def has_property({:obj, ref}, key) do + map = Heap.get_obj(ref, %{}) + + case map do + %{ + proxy_target() => target, + proxy_handler() => handler + } -> + has_trap = Get.get(handler, "has") + + if has_trap != :undefined do + Values.truthy?(Invocation.invoke_callback_or_throw(has_trap, [target, key])) + else + has_property(target, key) + end + + _ when is_map(map) -> + Map.has_key?(map, key) or Get.get({:obj, ref}, key) != :undefined + + _ -> + Get.get({:obj, ref}, key) != :undefined + end + end + + def has_property({:builtin, _, _} = b, key) do + Get.get(b, key) != :undefined + end + + def has_property(obj, key) when is_map(obj), do: Map.has_key?(obj, key) + + def has_property({:qb_arr, arr}, key) when is_integer(key), + do: key >= 0 and key < :array.size(arr) + + def has_property(obj, key) when is_list(obj) and is_integer(key), + do: key >= 0 and key < length(obj) + + def has_property(_, _), do: false + + @doc "Reads an indexed JavaScript element." + def get_element({:obj, ref} = obj, idx) do + case Heap.get_obj(ref) do + %{typed_array() => true} when is_integer(idx) -> + Runtime.TypedArray.get_element(obj, idx) + + {:qb_arr, arr} when is_integer(idx) -> + if idx >= 0 and idx < :array.size(arr), + do: :array.get(idx, arr), + else: :undefined + + list when is_list(list) and is_integer(idx) -> + Enum.at(list, idx, :undefined) + + map when is_map(map) -> + key = if is_integer(idx), do: Integer.to_string(idx), else: idx + + case Map.fetch(map, key) do + {:ok, val} -> + val + + :error -> + case Map.fetch(map, idx) do + {:ok, val} -> + val + + :error when is_binary(key) or is_binary(idx) -> + Get.get(obj, if(is_binary(key), do: key, else: idx)) + + :error -> + :undefined + end + end + + {:shape, _, _, _, _} when is_binary(idx) or is_integer(idx) -> + Get.get(obj, if(is_integer(idx), do: Integer.to_string(idx), else: idx)) + + _ -> + :undefined + end + end + + def get_element({:qb_arr, arr}, idx) when is_integer(idx) do + if idx >= 0 and idx < :array.size(arr), + do: :array.get(idx, arr), + else: :undefined + end + + def get_element(obj, idx) when is_list(obj) and is_integer(idx), + do: Enum.at(obj, idx, :undefined) + + def get_element(obj, idx) when is_map(obj), do: Map.get(obj, idx, :undefined) + + def get_element(s, idx) when is_binary(s) and is_integer(idx) and idx >= 0, + do: String.at(s, idx) || :undefined + + def get_element(s, key) when is_binary(s) and is_binary(key), + do: Get.get(s, key) + + def get_element(nil, key) do + throw( + {:js_throw, + Heap.make_error( + "Cannot read properties of null (reading '#{Values.stringify(key)}')", + "TypeError" + )} + ) + end + + def get_element(:undefined, key) do + throw( + {:js_throw, + Heap.make_error( + "Cannot read properties of undefined (reading '#{Values.stringify(key)}')", + "TypeError" + )} + ) + end + + def get_element(obj, key) when is_binary(key) do + Get.get(obj, key) + end + + def get_element({:builtin, _, _} = b, {:symbol, _} = sym_key) do + case Map.get(Heap.get_ctor_statics(b), sym_key) do + {:accessor, getter, _} when getter != nil -> + Runtime.call_callback(getter, []) + + nil -> + :undefined + + val -> + val + end + end + + def get_element({:obj, ref}, {:symbol, _} = sym_key) do + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> + case Map.get(map, sym_key) do + {:accessor, getter, _} when getter != nil -> + Runtime.call_callback(getter, []) + + nil -> + :undefined + + val -> + val + end + + _ -> + :undefined + end + end + + def get_element(_, _), do: :undefined + + @doc "Writes an indexed JavaScript element." + def put_element({:obj, ref} = obj, key, val) do + case Heap.get_obj(ref) do + %{typed_array() => true} when is_integer(key) -> + Runtime.TypedArray.set_element(obj, key, val) + + {:qb_arr, arr} -> + case key do + i when is_integer(i) and i >= 0 -> + if i >= :array.size(arr) and proto_has_setter?(i) do + invoke_proto_setter(obj, i, val) + else + Heap.array_set(ref, i, val) + end + + _ -> + :ok + end + + list when is_list(list) -> + case key do + i when is_integer(i) and i >= 0 and i < length(list) -> + Heap.put_obj(ref, List.replace_at(list, i, val)) + + i when is_integer(i) and i >= 0 -> + if proto_has_setter?(i) do + invoke_proto_setter(obj, i, val) + else + padded = list ++ List.duplicate(:undefined, i - length(list)) ++ [val] + Heap.put_obj(ref, padded) + end + + _ -> + :ok + end + + map when is_map(map) -> + str_key = + case key do + {:symbol, _, _} -> key + {:symbol, _} -> key + k when is_float(k) and k == trunc(k) and k >= 0 -> Integer.to_string(trunc(k)) + _ -> Values.stringify(key) + end + + Heap.put_obj_key(ref, map, str_key, val) + + nil -> + :ok + end + end + + def put_element(_, _, _), do: :ok + + @doc "Defines an array element and descriptor metadata." + def define_array_el(obj, idx, val) do + obj2 = + case obj do + list when is_list(list) -> + i = if is_integer(idx), do: idx, else: Runtime.to_int(idx) + set_list_at(list, i, val) + + {:obj, ref} -> + stored = Heap.get_obj(ref, []) + + cond do + match?({:qb_arr, _}, stored) -> + i = if is_integer(idx), do: idx, else: Runtime.to_int(idx) + Heap.array_set(ref, i, val) + + is_list(stored) -> + i = if is_integer(idx), do: idx, else: Runtime.to_int(idx) + Heap.put_obj(ref, set_list_at(stored, i, val)) + + is_map(stored) -> + Heap.put_obj_key(ref, stored, Names.normalize_property_key(idx), val) + + true -> + :ok + end + + {:obj, ref} + + %Bytecode.Function{} = ctor -> + Heap.put_ctor_static(ctor, Names.normalize_property_key(idx), val) + ctor + + {:closure, _, %Bytecode.Function{}} = ctor -> + Heap.put_ctor_static(ctor, Names.normalize_property_key(idx), val) + ctor + + {:builtin, _, _} = ctor -> + Heap.put_ctor_static(ctor, Names.normalize_property_key(idx), val) + ctor + + _ -> + obj + end + + {idx, obj2} + end + + @doc "Returns a list with an index updated, padding holes with `:undefined` as needed." + def set_list_at(list, i, val) when is_integer(i) and i >= 0 and i < length(list), + do: List.replace_at(list, i, val) + + def set_list_at(list, i, val) when is_integer(i) and i >= 0, + do: list ++ List.duplicate(:undefined, max(0, i - length(list))) ++ [val] + + defp sync_global_this?(obj, key, val) when is_binary(key) do + case Heap.get_ctx() do + %{globals: %{"globalThis" => ^obj}} -> + globals = Heap.get_persistent_globals() || %{} + Heap.put_persistent_globals(Map.put(globals, key, val)) + + _ -> + :ok + end + end + + defp sync_global_this?(_obj, _key, _val), do: :ok +end diff --git a/lib/quickbeam/vm/opcodes.ex b/lib/quickbeam/vm/opcodes.ex new file mode 100644 index 000000000..4377fb988 --- /dev/null +++ b/lib/quickbeam/vm/opcodes.ex @@ -0,0 +1,442 @@ +defmodule QuickBEAM.VM.Opcodes do + @moduledoc "QuickJS opcode table: numeric codes, stack effects, and format metadata for all JS bytecode instructions." + # Generated from quickjs-opcode.h + # Each entry: {name, byte_size, n_pop, n_push, format} + + # BC_TAG values (top-level serialization tags, not opcodes) + + @bc_tags %{ + null: 1, + undefined: 2, + bool_false: 3, + bool_true: 4, + int32: 5, + float64: 6, + string: 7, + object: 8, + array: 9, + big_int: 10, + template_object: 11, + function_bytecode: 12, + module: 13, + typed_array: 14, + array_buffer: 15, + shared_array_buffer: 16, + regexp: 17, + date: 18, + object_value: 19, + object_reference: 20, + map: 21, + set: 22, + symbol: 23 + } + + for {name, val} <- @bc_tags do + @doc false + def unquote(:"bc_tag_#{name}")(), do: unquote(val) + end + + @bc_version 25 + def bc_version, do: @bc_version + + @js_atom_end QuickBEAM.VM.PredefinedAtoms.count() + 1 + def js_atom_end, do: @js_atom_end + + # Opcode format types — determine how operand bytes are decoded + # :none / :none_int / :none_loc / :none_arg / :none_var_ref → 0 extra bytes + # :u8 / :i8 / :loc8 / :const8 / :label8 → 1 byte + # :u16 / :i16 / :label16 → 2 bytes + # :npop / :npopx → 1 byte (argc) + # :npop_u16 → 1 byte + 2 bytes + # :loc / :arg / :var_ref → LEB128 + # :u32 → LEB128 + # :u32x2 → LEB128 + LEB128 + # :i32 → SLEB128 + # :const → LEB128 + # :label → LEB128 + # :atom → LEB128 (atom table index) + # :atom_u8 → LEB128 + 1 byte + # :atom_u16 → LEB128 + 2 bytes + # :atom_label_u8 → LEB128 + LEB128 + 1 byte + # :atom_label_u16 → LEB128 + LEB128 + 2 bytes + # :label_u16 → LEB128 + 2 bytes + + # Format → :zero | {:bytes, pos_integer} | :leb128 | :mixed + @format_info %{ + none: :zero, + none_int: :zero, + none_loc: :zero, + none_arg: :zero, + none_var_ref: :zero, + u8: {:bytes, 1}, + i8: {:bytes, 1}, + loc8: {:bytes, 1}, + const8: {:bytes, 1}, + label8: {:bytes, 1}, + u16: {:bytes, 2}, + i16: {:bytes, 2}, + label16: {:bytes, 2}, + npop: {:bytes, 1}, + npopx: :zero, + npop_u16: :npop_u16, + loc: :leb128, + arg: :leb128, + var_ref: :leb128, + u32: :leb128, + u32x2: :leb128_leb128, + i32: :sleb128, + const: :leb128, + label: :leb128, + atom: :leb128, + atom_u8: :atom_u8, + atom_u16: :atom_u16, + atom_label_u8: :atom_label_u8, + atom_label_u16: :atom_label_u16, + label_u16: :label_u16 + } + + # Full opcode table: {opcode_number, name, byte_size, n_pop, n_push, format} + # Parsed from quickjs-opcode.h — order matters, index = opcode number + @opcodes %{ + 0 => {:invalid, 1, 0, 0, :none}, + 1 => {:push_i32, 5, 0, 1, :i32}, + 2 => {:push_const, 5, 0, 1, :const}, + 3 => {:fclosure, 5, 0, 1, :const}, + 4 => {:push_atom_value, 5, 0, 1, :atom}, + 5 => {:private_symbol, 5, 0, 1, :atom}, + 6 => {:undefined, 1, 0, 1, :none}, + 7 => {:null, 1, 0, 1, :none}, + 8 => {:push_this, 1, 0, 1, :none}, + 9 => {:push_false, 1, 0, 1, :none}, + 10 => {:push_true, 1, 0, 1, :none}, + 11 => {:object, 1, 0, 1, :none}, + 12 => {:special_object, 2, 0, 1, :u8}, + 13 => {:rest, 3, 0, 1, :u16}, + 14 => {:drop, 1, 1, 0, :none}, + 15 => {:nip, 1, 2, 1, :none}, + 16 => {:nip1, 1, 3, 2, :none}, + 17 => {:dup, 1, 1, 2, :none}, + 18 => {:dup1, 1, 2, 3, :none}, + 19 => {:dup2, 1, 2, 4, :none}, + 20 => {:dup3, 1, 3, 6, :none}, + 21 => {:insert2, 1, 2, 3, :none}, + 22 => {:insert3, 1, 3, 4, :none}, + 23 => {:insert4, 1, 4, 5, :none}, + 24 => {:perm3, 1, 3, 3, :none}, + 25 => {:perm4, 1, 4, 4, :none}, + 26 => {:perm5, 1, 5, 5, :none}, + 27 => {:swap, 1, 2, 2, :none}, + 28 => {:swap2, 1, 4, 4, :none}, + 29 => {:rot3l, 1, 3, 3, :none}, + 30 => {:rot3r, 1, 3, 3, :none}, + 31 => {:rot4l, 1, 4, 4, :none}, + 32 => {:rot5l, 1, 5, 5, :none}, + 33 => {:call_constructor, 3, 2, 1, :npop}, + 34 => {:call, 3, 1, 1, :npop}, + 35 => {:tail_call, 3, 1, 0, :npop}, + 36 => {:call_method, 3, 2, 1, :npop}, + 37 => {:tail_call_method, 3, 2, 0, :npop}, + 38 => {:array_from, 3, 0, 1, :npop}, + 39 => {:apply, 3, 3, 1, :u16}, + 40 => {:return, 1, 1, 0, :none}, + 41 => {:return_undef, 1, 0, 0, :none}, + 42 => {:check_ctor_return, 1, 1, 2, :none}, + 43 => {:check_ctor, 1, 0, 0, :none}, + 44 => {:init_ctor, 1, 0, 1, :none}, + 45 => {:check_brand, 1, 2, 2, :none}, + 46 => {:add_brand, 1, 2, 0, :none}, + 47 => {:return_async, 1, 1, 0, :none}, + 48 => {:throw, 1, 1, 0, :none}, + 49 => {:throw_error, 6, 0, 0, :atom_u8}, + 50 => {:eval, 5, 1, 1, :npop_u16}, + 51 => {:apply_eval, 3, 2, 1, :u16}, + 52 => {:regexp, 1, 2, 1, :none}, + 53 => {:get_super, 1, 1, 1, :none}, + 54 => {:import, 1, 2, 1, :none}, + 55 => {:get_var_undef, 5, 0, 1, :atom}, + 56 => {:get_var, 5, 0, 1, :atom}, + 57 => {:put_var, 5, 1, 0, :atom}, + 58 => {:put_var_init, 5, 1, 0, :atom}, + 59 => {:get_ref_value, 1, 2, 3, :none}, + 60 => {:put_ref_value, 1, 3, 0, :none}, + 61 => {:define_var, 6, 0, 0, :atom_u8}, + 62 => {:check_define_var, 6, 0, 0, :atom_u8}, + 63 => {:define_func, 6, 1, 0, :atom_u8}, + 64 => {:get_field, 5, 1, 1, :atom}, + 65 => {:get_field2, 5, 1, 2, :atom}, + 66 => {:put_field, 5, 2, 0, :atom}, + 67 => {:get_private_field, 1, 2, 1, :none}, + 68 => {:put_private_field, 1, 3, 0, :none}, + 69 => {:define_private_field, 1, 3, 1, :none}, + 70 => {:get_array_el, 1, 2, 1, :none}, + 71 => {:get_array_el2, 1, 2, 2, :none}, + 72 => {:put_array_el, 1, 3, 0, :none}, + 73 => {:get_super_value, 1, 3, 1, :none}, + 74 => {:put_super_value, 1, 4, 0, :none}, + 75 => {:define_field, 5, 2, 1, :atom}, + 76 => {:set_name, 5, 1, 1, :atom}, + 77 => {:set_name_computed, 1, 2, 2, :none}, + 78 => {:set_proto, 1, 2, 1, :none}, + 79 => {:set_home_object, 1, 2, 2, :none}, + 80 => {:define_array_el, 1, 3, 2, :none}, + 81 => {:append, 1, 3, 2, :none}, + 82 => {:copy_data_properties, 2, 3, 3, :u8}, + 83 => {:define_method, 6, 2, 1, :atom_u8}, + 84 => {:define_method_computed, 2, 3, 1, :u8}, + 85 => {:define_class, 6, 2, 2, :atom_u8}, + 86 => {:define_class_computed, 6, 3, 3, :atom_u8}, + 87 => {:get_loc, 3, 0, 1, :loc}, + 88 => {:put_loc, 3, 1, 0, :loc}, + 89 => {:set_loc, 3, 1, 1, :loc}, + 90 => {:get_arg, 3, 0, 1, :arg}, + 91 => {:put_arg, 3, 1, 0, :arg}, + 92 => {:set_arg, 3, 1, 1, :arg}, + 93 => {:get_var_ref, 3, 0, 1, :var_ref}, + 94 => {:put_var_ref, 3, 1, 0, :var_ref}, + 95 => {:set_var_ref, 3, 1, 1, :var_ref}, + 96 => {:set_loc_uninitialized, 3, 0, 0, :loc}, + 97 => {:get_loc_check, 3, 0, 1, :loc}, + 98 => {:put_loc_check, 3, 1, 0, :loc}, + 99 => {:put_loc_check_init, 3, 1, 0, :loc}, + 100 => {:get_var_ref_check, 3, 0, 1, :var_ref}, + 101 => {:put_var_ref_check, 3, 1, 0, :var_ref}, + 102 => {:put_var_ref_check_init, 3, 1, 0, :var_ref}, + 103 => {:close_loc, 3, 0, 0, :loc}, + 104 => {:if_false, 5, 1, 0, :label}, + 105 => {:if_true, 5, 1, 0, :label}, + 106 => {:goto, 5, 0, 0, :label}, + 107 => {:catch, 5, 0, 1, :label}, + 108 => {:gosub, 5, 0, 0, :label}, + 109 => {:ret, 1, 1, 0, :none}, + 110 => {:nip_catch, 1, 2, 1, :none}, + 111 => {:to_object, 1, 1, 1, :none}, + 112 => {:to_propkey, 1, 1, 1, :none}, + 113 => {:to_propkey2, 1, 2, 2, :none}, + 114 => {:with_get_var, 10, 1, 0, :atom_label_u8}, + 115 => {:with_put_var, 10, 2, 1, :atom_label_u8}, + 116 => {:with_delete_var, 10, 1, 0, :atom_label_u8}, + 117 => {:with_make_ref, 10, 1, 0, :atom_label_u8}, + 118 => {:with_get_ref, 10, 1, 0, :atom_label_u8}, + 119 => {:with_get_ref_undef, 10, 1, 0, :atom_label_u8}, + 120 => {:make_loc_ref, 7, 0, 2, :atom_u16}, + 121 => {:make_arg_ref, 7, 0, 2, :atom_u16}, + 122 => {:make_var_ref_ref, 7, 0, 2, :atom_u16}, + 123 => {:make_var_ref, 5, 0, 2, :atom}, + 124 => {:for_in_start, 1, 1, 1, :none}, + 125 => {:for_of_start, 1, 1, 3, :none}, + 126 => {:for_await_of_start, 1, 1, 3, :none}, + 127 => {:for_in_next, 1, 1, 3, :none}, + 128 => {:for_of_next, 2, 3, 5, :u8}, + 129 => {:iterator_check_object, 1, 1, 1, :none}, + 130 => {:iterator_get_value_done, 1, 1, 2, :none}, + 131 => {:iterator_close, 1, 3, 0, :none}, + 132 => {:iterator_next, 1, 4, 4, :none}, + 133 => {:iterator_call, 2, 4, 5, :u8}, + 134 => {:initial_yield, 1, 0, 0, :none}, + 135 => {:yield, 1, 1, 2, :none}, + 136 => {:yield_star, 1, 1, 2, :none}, + 137 => {:async_yield_star, 1, 1, 2, :none}, + 138 => {:await, 1, 1, 1, :none}, + 139 => {:neg, 1, 1, 1, :none}, + 140 => {:plus, 1, 1, 1, :none}, + 141 => {:dec, 1, 1, 1, :none}, + 142 => {:inc, 1, 1, 1, :none}, + 143 => {:post_dec, 1, 1, 2, :none}, + 144 => {:post_inc, 1, 1, 2, :none}, + 145 => {:dec_loc, 2, 0, 0, :loc8}, + 146 => {:inc_loc, 2, 0, 0, :loc8}, + 147 => {:add_loc, 2, 1, 0, :loc8}, + 148 => {:not, 1, 1, 1, :none}, + 149 => {:lnot, 1, 1, 1, :none}, + 150 => {:typeof, 1, 1, 1, :none}, + 151 => {:delete, 1, 2, 1, :none}, + 152 => {:delete_var, 5, 0, 1, :atom}, + 153 => {:mul, 1, 2, 1, :none}, + 154 => {:div, 1, 2, 1, :none}, + 155 => {:mod, 1, 2, 1, :none}, + 156 => {:add, 1, 2, 1, :none}, + 157 => {:sub, 1, 2, 1, :none}, + 158 => {:shl, 1, 2, 1, :none}, + 159 => {:sar, 1, 2, 1, :none}, + 160 => {:shr, 1, 2, 1, :none}, + 161 => {:band, 1, 2, 1, :none}, + 162 => {:bxor, 1, 2, 1, :none}, + 163 => {:bor, 1, 2, 1, :none}, + 164 => {:pow, 1, 2, 1, :none}, + 165 => {:lt, 1, 2, 1, :none}, + 166 => {:lte, 1, 2, 1, :none}, + 167 => {:gt, 1, 2, 1, :none}, + 168 => {:gte, 1, 2, 1, :none}, + 169 => {:instanceof, 1, 2, 1, :none}, + 170 => {:in, 1, 2, 1, :none}, + 171 => {:eq, 1, 2, 1, :none}, + 172 => {:neq, 1, 2, 1, :none}, + 173 => {:strict_eq, 1, 2, 1, :none}, + 174 => {:strict_neq, 1, 2, 1, :none}, + 175 => {:is_undefined_or_null, 1, 1, 1, :none}, + 176 => {:private_in, 1, 2, 1, :none}, + 177 => {:push_bigint_i32, 5, 0, 1, :i32}, + 178 => {:nop, 1, 0, 0, :none}, + 179 => {:push_minus1, 1, 0, 1, :none_int}, + 180 => {:push_0, 1, 0, 1, :none_int}, + 181 => {:push_1, 1, 0, 1, :none_int}, + 182 => {:push_2, 1, 0, 1, :none_int}, + 183 => {:push_3, 1, 0, 1, :none_int}, + 184 => {:push_4, 1, 0, 1, :none_int}, + 185 => {:push_5, 1, 0, 1, :none_int}, + 186 => {:push_6, 1, 0, 1, :none_int}, + 187 => {:push_7, 1, 0, 1, :none_int}, + 188 => {:push_i8, 2, 0, 1, :i8}, + 189 => {:push_i16, 3, 0, 1, :i16}, + 190 => {:push_const8, 2, 0, 1, :const8}, + 191 => {:fclosure8, 2, 0, 1, :const8}, + 192 => {:push_empty_string, 1, 0, 1, :none}, + 193 => {:get_loc8, 2, 0, 1, :loc8}, + 194 => {:put_loc8, 2, 1, 0, :loc8}, + 195 => {:set_loc8, 2, 1, 1, :loc8}, + 196 => {:get_loc0_loc1, 1, 0, 2, :none_loc}, + 197 => {:get_loc0, 1, 0, 1, :none_loc}, + 198 => {:get_loc1, 1, 0, 1, :none_loc}, + 199 => {:get_loc2, 1, 0, 1, :none_loc}, + 200 => {:get_loc3, 1, 0, 1, :none_loc}, + 201 => {:put_loc0, 1, 1, 0, :none_loc}, + 202 => {:put_loc1, 1, 1, 0, :none_loc}, + 203 => {:put_loc2, 1, 1, 0, :none_loc}, + 204 => {:put_loc3, 1, 1, 0, :none_loc}, + 205 => {:set_loc0, 1, 1, 1, :none_loc}, + 206 => {:set_loc1, 1, 1, 1, :none_loc}, + 207 => {:set_loc2, 1, 1, 1, :none_loc}, + 208 => {:set_loc3, 1, 1, 1, :none_loc}, + 209 => {:get_arg0, 1, 0, 1, :none_arg}, + 210 => {:get_arg1, 1, 0, 1, :none_arg}, + 211 => {:get_arg2, 1, 0, 1, :none_arg}, + 212 => {:get_arg3, 1, 0, 1, :none_arg}, + 213 => {:put_arg0, 1, 1, 0, :none_arg}, + 214 => {:put_arg1, 1, 1, 0, :none_arg}, + 215 => {:put_arg2, 1, 1, 0, :none_arg}, + 216 => {:put_arg3, 1, 1, 0, :none_arg}, + 217 => {:set_arg0, 1, 1, 1, :none_arg}, + 218 => {:set_arg1, 1, 1, 1, :none_arg}, + 219 => {:set_arg2, 1, 1, 1, :none_arg}, + 220 => {:set_arg3, 1, 1, 1, :none_arg}, + 221 => {:get_var_ref0, 1, 0, 1, :none_var_ref}, + 222 => {:get_var_ref1, 1, 0, 1, :none_var_ref}, + 223 => {:get_var_ref2, 1, 0, 1, :none_var_ref}, + 224 => {:get_var_ref3, 1, 0, 1, :none_var_ref}, + 225 => {:put_var_ref0, 1, 1, 0, :none_var_ref}, + 226 => {:put_var_ref1, 1, 1, 0, :none_var_ref}, + 227 => {:put_var_ref2, 1, 1, 0, :none_var_ref}, + 228 => {:put_var_ref3, 1, 1, 0, :none_var_ref}, + 229 => {:set_var_ref0, 1, 1, 1, :none_var_ref}, + 230 => {:set_var_ref1, 1, 1, 1, :none_var_ref}, + 231 => {:set_var_ref2, 1, 1, 1, :none_var_ref}, + 232 => {:set_var_ref3, 1, 1, 1, :none_var_ref}, + 233 => {:get_length, 1, 1, 1, :none}, + 234 => {:if_false8, 2, 1, 0, :label8}, + 235 => {:if_true8, 2, 1, 0, :label8}, + 236 => {:goto8, 2, 0, 0, :label8}, + 237 => {:goto16, 3, 0, 0, :label16}, + 238 => {:call0, 1, 1, 1, :npopx}, + 239 => {:call1, 1, 1, 1, :npopx}, + 240 => {:call2, 1, 1, 1, :npopx}, + 241 => {:call3, 1, 1, 1, :npopx}, + 242 => {:is_undefined, 1, 1, 1, :none}, + 243 => {:is_null, 1, 1, 1, :none}, + 244 => {:typeof_is_undefined, 1, 1, 1, :none}, + 245 => {:typeof_is_function, 1, 1, 1, :none} + } + + @name_to_num for {num, {name, _, _, _, _}} <- @opcodes, into: %{}, do: {name, num} + + @doc "Returns opcode metadata indexed by opcode number." + def table, do: @opcodes + @doc "Returns metadata for an opcode." + def info(num) when is_integer(num), do: Map.get(@opcodes, num) + @doc "Returns the numeric opcode for an opcode name." + def num(name) when is_atom(name), do: Map.get(@name_to_num, name) + + @doc "Returns operand-format metadata for an opcode." + def format_info(fmt), do: Map.get(@format_info, fmt) + + # Short-form opcodes expand to their canonical form + @short_forms %{ + push_minus1: {:push_i32, [-1]}, + push_0: {:push_i32, [0]}, + push_1: {:push_i32, [1]}, + push_2: {:push_i32, [2]}, + push_3: {:push_i32, [3]}, + push_4: {:push_i32, [4]}, + push_5: {:push_i32, [5]}, + push_6: {:push_i32, [6]}, + push_7: {:push_i32, [7]}, + get_loc0: {:get_loc, [0]}, + get_loc1: {:get_loc, [1]}, + get_loc2: {:get_loc, [2]}, + get_loc3: {:get_loc, [3]}, + put_loc0: {:put_loc, [0]}, + put_loc1: {:put_loc, [1]}, + put_loc2: {:put_loc, [2]}, + put_loc3: {:put_loc, [3]}, + set_loc0: {:set_loc, [0]}, + set_loc1: {:set_loc, [1]}, + set_loc2: {:set_loc, [2]}, + set_loc3: {:set_loc, [3]}, + get_arg0: {:get_arg, [0]}, + get_arg1: {:get_arg, [1]}, + get_arg2: {:get_arg, [2]}, + get_arg3: {:get_arg, [3]}, + put_arg0: {:put_arg, [0]}, + put_arg1: {:put_arg, [1]}, + put_arg2: {:put_arg, [2]}, + put_arg3: {:put_arg, [3]}, + set_arg0: {:set_arg, [0]}, + set_arg1: {:set_arg, [1]}, + set_arg2: {:set_arg, [2]}, + set_arg3: {:set_arg, [3]}, + get_var_ref0: {:get_var_ref, [0]}, + get_var_ref1: {:get_var_ref, [1]}, + get_var_ref2: {:get_var_ref, [2]}, + get_var_ref3: {:get_var_ref, [3]}, + put_var_ref0: {:put_var_ref, [0]}, + put_var_ref1: {:put_var_ref, [1]}, + put_var_ref2: {:put_var_ref, [2]}, + put_var_ref3: {:put_var_ref, [3]}, + set_var_ref0: {:set_var_ref, [0]}, + set_var_ref1: {:set_var_ref, [1]}, + set_var_ref2: {:set_var_ref, [2]}, + set_var_ref3: {:set_var_ref, [3]}, + call0: {:call, [0]}, + call1: {:call, [1]}, + call2: {:call, [2]}, + call3: {:call, [3]}, + push_empty_string: {:push_atom_value, [:empty_string]}, + get_loc0_loc1: {:get_loc0_loc1, []} + } + + @passthrough_aliases %{ + get_loc8: :get_loc, + put_loc8: :put_loc, + set_loc8: :set_loc, + get_loc_check8: :get_loc_check, + put_loc_check8: :put_loc_check + } + + @doc "Expands compact opcode encodings into their canonical representation." + def expand_short_form(name, args, arg_count \\ 0) do + case Map.get(@short_forms, name) do + nil -> + case Map.get(@passthrough_aliases, name) do + nil -> {name, args} + canonical -> {canonical, args} + end + + {canonical, const_args} -> + if canonical in [:get_loc, :put_loc, :set_loc] do + [idx] = const_args + {canonical, [idx + arg_count]} + else + {canonical, const_args} + end + end + end +end diff --git a/lib/quickbeam/vm/predefined_atoms.ex b/lib/quickbeam/vm/predefined_atoms.ex new file mode 100644 index 000000000..21cd7b391 --- /dev/null +++ b/lib/quickbeam/vm/predefined_atoms.ex @@ -0,0 +1,21 @@ +defmodule QuickBEAM.VM.PredefinedAtoms do + @moduledoc "QuickJS predefined atom table, generated at compile time from quickjs-atom.h" + + @header_path Application.app_dir(:quickbeam, "priv/c_src/quickjs-atom.h") + @external_resource @header_path + + @table @header_path + |> File.stream!() + |> Stream.filter(&match?("DEF(" <> _, &1)) + |> Stream.with_index(1) + |> Map.new(fn {line, idx} -> + {idx, line |> String.split("\"") |> Enum.at(1)} + end) + + @doc "Looks up a predefined atom by index." + def lookup(idx) when is_map_key(@table, idx), do: Map.fetch!(@table, idx) + def lookup(_), do: nil + + @doc "Returns the number of predefined atoms." + def count, do: map_size(@table) +end diff --git a/lib/quickbeam/vm/promise_state.ex b/lib/quickbeam/vm/promise_state.ex new file mode 100644 index 000000000..ac81a2bc9 --- /dev/null +++ b/lib/quickbeam/vm/promise_state.ex @@ -0,0 +1,198 @@ +defmodule QuickBEAM.VM.PromiseState do + @moduledoc "Promise lifecycle: create resolved/rejected promises, chain `.then`/`.catch`/`.finally`, and flush microtasks." + + import QuickBEAM.VM.Heap.Keys + import QuickBEAM.VM.Builtin, only: [arg: 3] + + alias QuickBEAM.VM.{Heap, Runtime} + alias QuickBEAM.VM.Interpreter + + @doc "Creates or returns a resolved Promise state value." + def resolved(val), do: make_promise(:resolved, val) + @doc "Creates or returns a rejected Promise state value." + def rejected(val), do: make_promise(:rejected, val) + + @doc "Implements Promise.prototype.then state transitions." + def promise_then(args, {:obj, promise_ref}), do: then_impl(args, promise_ref) + def promise_then(_args, _this), do: resolved(:undefined) + + @doc "Implements Promise.prototype.catch state transitions." + def promise_catch(args, this), do: promise_then([nil, arg(args, 0, nil)], this) + + @doc "Implements Promise.prototype.finally state transitions." + def promise_finally([callback | _], {:obj, promise_ref}) do + then_impl( + [ + fn value -> + run_finally(callback) + value + end, + fn reason -> + run_finally(callback) + throw({:js_throw, reason}) + end + ], + promise_ref + ) + end + + def promise_finally(_args, _this), do: resolved(:undefined) + + @doc "Resolves a Promise state and drains queued reactions." + def resolve(ref, state, val) do + Heap.put_obj(ref, promise_obj(state, val, ref)) + + for {on_fulfilled, on_rejected, child_ref} <- pop_waiters(ref) do + handler = + case state do + :resolved -> on_fulfilled + :rejected -> on_rejected + end + + handler = if callable?(handler), do: handler, else: fn v -> v end + Heap.enqueue_microtask({:resolve, child_ref, handler, val}) + end + end + + @doc "Runs queued microtasks until the queue is empty." + def drain_microtasks do + case Heap.dequeue_microtask() do + nil -> + :ok + + {:resolve, nil, callback, val} -> + # queueMicrotask-style: fire and forget, errors silently discarded + try do + Interpreter.invoke_callback(callback, [val]) + catch + {:js_throw, _} -> :ok + end + + drain_microtasks() + + {:resolve, child_ref, callback, val} -> + result = + try do + Interpreter.invoke_callback(callback, [val]) + catch + {:js_throw, err} -> {:rejected, err} + end + + case result do + {:rejected, err} -> resolve(child_ref, :rejected, err) + result_val -> resolve_or_chain(child_ref, result_val) + end + + drain_microtasks() + end + end + + # ── Internal ── + + defp make_promise(state, val) do + ref = make_ref() + Heap.put_obj(ref, promise_obj(state, val, ref)) + {:obj, ref} + end + + defp promise_obj(state, val, ref) do + base = %{ + promise_state() => state, + promise_value() => val, + "then" => then_fn(ref), + "catch" => catch_fn(ref) + } + + case promise_proto() do + nil -> base + proto -> Map.put(base, "__proto__", proto) + end + end + + defp pending_child do + ref = make_ref() + Heap.put_obj(ref, promise_obj(:pending, nil, ref)) + ref + end + + defp then_fn(promise_ref) do + {:builtin, "then", fn args, _this -> then_impl(args, promise_ref) end} + end + + defp catch_fn(promise_ref) do + {:builtin, "catch", fn args, _this -> then_impl([nil, arg(args, 0, nil)], promise_ref) end} + end + + defp then_impl(args, promise_ref) do + on_fulfilled = arg(args, 0, nil) + on_rejected = arg(args, 1, nil) + + case Heap.get_obj(promise_ref, %{}) do + %{promise_state() => state, promise_value() => val} when state in [:resolved, :rejected] -> + handler = if state == :resolved, do: on_fulfilled, else: on_rejected + + if callable?(handler) do + child_ref = pending_child() + Heap.enqueue_microtask({:resolve, child_ref, handler, val}) + {:obj, child_ref} + else + make_promise(state, val) + end + + %{promise_state() => :pending} -> + child_ref = pending_child() + waiters = Heap.get_promise_waiters(promise_ref) + + Heap.put_promise_waiters(promise_ref, [ + {on_fulfilled, on_rejected, child_ref} | waiters + ]) + + {:obj, child_ref} + + _ -> + resolved(:undefined) + end + end + + defp run_finally(callback) do + if callable?(callback) do + Interpreter.invoke_callback(callback, []) + else + :undefined + end + end + + defp promise_proto, do: Runtime.global_class_proto("Promise") + + defp resolve_or_chain(child_ref, {:obj, r}) do + case Heap.get_obj(r, %{}) do + %{promise_state() => :resolved, promise_value() => v} -> + resolve(child_ref, :resolved, v) + + %{promise_state() => :rejected, promise_value() => v} -> + resolve(child_ref, :rejected, v) + + %{promise_state() => :pending} -> + waiters = Heap.get_promise_waiters(r) + + Heap.put_promise_waiters(r, [ + {fn v -> resolve(child_ref, :resolved, v) end, nil, child_ref} | waiters + ]) + + _ -> + resolve(child_ref, :resolved, {:obj, r}) + end + end + + defp resolve_or_chain(child_ref, val), do: resolve(child_ref, :resolved, val) + + defp callable?(nil), do: false + defp callable?(:undefined), do: false + defp callable?(_), do: true + + defp pop_waiters(ref) do + waiters = Heap.get_promise_waiters(ref) + Heap.delete_promise_waiters(ref) + waiters + end +end diff --git a/lib/quickbeam/vm/runtime.ex b/lib/quickbeam/vm/runtime.ex new file mode 100644 index 000000000..ec92e1893 --- /dev/null +++ b/lib/quickbeam/vm/runtime.ex @@ -0,0 +1,112 @@ +defmodule QuickBEAM.VM.Runtime do + @moduledoc "Shared helpers for the BEAM JS runtime: coercion, callbacks, object creation." + + alias QuickBEAM.VM.{Heap, Invocation} + alias QuickBEAM.VM.Interpreter.{Context, Values} + alias QuickBEAM.VM.Runtime.Globals + + @doc "Returns the current runtime global binding map, building and caching it when needed." + def global_bindings do + case Heap.get_global_cache() do + nil -> Globals.build() + cached -> cached + end + end + + @doc "Looks up a globally registered constructor by JavaScript name." + defdelegate global_constructor(name), to: QuickBEAM.VM.Runtime.Constructors, as: :lookup + @doc "Returns the class prototype associated with a globally registered constructor." + defdelegate global_class_proto(name), to: QuickBEAM.VM.Runtime.Constructors, as: :class_proto + + @doc "Invokes a global constructor and returns `fallback.()` when it is unavailable." + defdelegate construct_global(name, args, fallback), + to: QuickBEAM.VM.Runtime.Constructors, + as: :construct + + @doc "Invokes a global constructor and updates the constructed object map before returning it." + defdelegate construct_global(name, args, fallback, update_object), + to: QuickBEAM.VM.Runtime.Constructors, + as: :construct + + # ── Callback dispatch (used by higher-order array methods) ── + + @doc "Calls a JavaScript callback using the active invocation context." + def call_callback(fun, args), do: Invocation.call_callback(fun, args) + + @doc "Returns the active interpreter gas budget or the default budget outside evaluation." + def gas_budget do + case Heap.get_ctx() do + %{gas: gas} -> gas + _ -> Context.default_gas() + end + end + + # ── Shared helpers (public for cross-module use) ── + + @doc "Creates an empty JavaScript object value." + def new_object do + Heap.wrap(%{}) + end + + @doc "Returns JavaScript truthiness for a VM value." + defdelegate truthy?(val), to: Values + + @doc "Returns strict BEAM equality for places that need identity-style comparison." + def strict_equal?(a, b), do: a === b + + @doc "Stringifies a VM value using JavaScript conversion rules." + def stringify(val), do: Values.stringify(val) + + @doc "Coerces simple runtime helper inputs to an integer, defaulting unsupported values to zero." + def to_int(n) when is_integer(n), do: n + def to_int(n) when is_float(n), do: trunc(n) + def to_int(_), do: 0 + + @doc "Coerces simple runtime helper inputs to a float-like value." + def to_float(n) when is_float(n), do: n + def to_float(n) when is_integer(n), do: n * 1.0 + def to_float(:infinity), do: :infinity + def to_float(:neg_infinity), do: :neg_infinity + def to_float(:nan), do: :nan + def to_float(_), do: 0.0 + + @doc "Coerces a VM value to a JavaScript number-like value." + def to_number({:bigint, n}), do: n + def to_number(val), do: Values.to_number(val) + + @doc "Normalizes a possibly-negative index against a sequence length." + def normalize_index(idx, len) when idx < 0, do: max(len + idx, 0) + def normalize_index(idx, len), do: min(idx, len) + + @max_array_index 4_294_967_294 + + @doc "Sorts JavaScript array-index-like keys before ordinary string keys." + def sort_numeric_keys(keys) do + {numeric, strings} = + Enum.split_with(keys, fn + k when is_integer(k) and k >= 0 and k <= @max_array_index -> + true + + k when is_binary(k) -> + case Integer.parse(k) do + {n, ""} when n >= 0 and n <= @max_array_index -> true + _ -> false + end + + _ -> + false + end) + + sorted = + Enum.sort_by(numeric, fn + k when is_integer(k) -> k + k when is_binary(k) -> elem(Integer.parse(k), 0) + end) + |> Enum.map(fn + k when is_integer(k) -> Integer.to_string(k) + k -> k + end) + + sorted ++ Enum.filter(strings, &is_binary/1) + end +end diff --git a/lib/quickbeam/vm/runtime/array.ex b/lib/quickbeam/vm/runtime/array.ex new file mode 100644 index 000000000..382f95c76 --- /dev/null +++ b/lib/quickbeam/vm/runtime/array.ex @@ -0,0 +1,878 @@ +defmodule QuickBEAM.VM.Runtime.Array do + @moduledoc "Array.prototype and Array static methods." + + use QuickBEAM.VM.Builtin + + import QuickBEAM.VM.Heap.Keys + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.Runtime + + @doc "Builds the JavaScript prototype object for this runtime builtin." + def prototype do + mod = __MODULE__ + methods = ~w(push pop shift unshift map filter reduce forEach indexOf + lastIndexOf toString includes slice splice join concat reverse sort + flat find findIndex some every fill copyWithin entries keys values + at flatMap) + + proto_map = + Enum.reduce(methods, %{}, fn name, acc -> + Map.put( + acc, + name, + {:builtin, name, + fn args, this -> + {:builtin, _, cb} = mod.proto_property(name) + cb.(args, this) + end} + ) + end) + + sym_iter = {:symbol, "Symbol.iterator"} + + proto_map = + Map.put( + proto_map, + sym_iter, + {:builtin, "[Symbol.iterator]", + fn _args, this -> + case this do + {:obj, _ref} -> + list = Heap.to_list(this) + Heap.wrap_iterator(list) + + _ -> + Heap.wrap_iterator([]) + end + end} + ) + + Heap.wrap(proto_map) + end + + # ── Array.prototype dispatch ── + + proto "push" do + push(this, args) + end + + proto "pop" do + pop(this, args) + end + + proto "shift" do + shift(this, args) + end + + proto "unshift" do + unshift(this, args) + end + + proto "map" do + map(this, args) + end + + proto "filter" do + filter(this, args) + end + + proto "reduce" do + reduce(this, args) + end + + proto "forEach" do + for_each(this, args) + end + + proto "indexOf" do + index_of(this, args) + end + + proto "lastIndexOf" do + last_index_of(this, args) + end + + proto "toString" do + join(this, [","]) + end + + proto "includes" do + includes(this, args) + end + + proto "slice" do + slice(this, args) + end + + proto "splice" do + splice(this, args) + end + + proto "join" do + join(this, args) + end + + proto "concat" do + concat(this, args) + end + + proto "reverse" do + reverse(this, args) + end + + proto "sort" do + sort(this, args) + end + + proto "flat" do + flat(this, args) + end + + proto "find" do + find(this, args) + end + + proto "findIndex" do + find_index(this, args) + end + + proto "every" do + every(this, args) + end + + proto "some" do + some(this, args) + end + + proto "flatMap" do + flat_map(this, args) + end + + proto "fill" do + fill(this, args) + end + + proto "copyWithin" do + copy_within(this, args) + end + + proto "at" do + array_at(this, args) + end + + proto "findLast" do + find_last(this, args) + end + + proto "findLastIndex" do + find_last_index(this, args) + end + + proto "toReversed" do + to_reversed(this) + end + + proto "toSorted" do + to_sorted(this) + end + + proto "values" do + make_array_iterator(this, :values) + end + + proto "keys" do + make_array_iterator(this, :keys) + end + + proto "entries" do + make_array_iterator(this, :entries) + end + + @doc "Returns a prototype property value for the given JavaScript property key." + def proto_property("constructor") do + Runtime.global_bindings() |> Map.get("Array", :undefined) + end + + # ── Array static dispatch ── + + # credo:disable-for-next-line Credo.Check.Readability.PredicateFunctionNames + static "isArray" do + is_array(hd(args)) + end + + @max_proxy_depth 1_000_000 + + # credo:disable-for-next-line Credo.Check.Readability.PredicateFunctionNames + defp is_array(val, depth \\ 0) + + # credo:disable-for-next-line Credo.Check.Readability.PredicateFunctionNames + defp is_array(_, depth) when depth > @max_proxy_depth do + JSThrow.range_error!("Maximum call stack size exceeded") + end + + # credo:disable-for-next-line Credo.Check.Readability.PredicateFunctionNames + defp is_array({:qb_arr, _}, _), do: true + defp is_array(list, _) when is_list(list), do: true + + # credo:disable-for-next-line Credo.Check.Readability.PredicateFunctionNames + defp is_array({:obj, ref}, depth) do + case Heap.get_obj(ref) do + {:qb_arr, _} -> true + list when is_list(list) -> true + %{proxy_target() => target} -> is_array(target, depth + 1) + _ -> false + end + end + + # credo:disable-for-next-line Credo.Check.Readability.PredicateFunctionNames + defp is_array(_, _), do: false + + static "from" do + from(args) + end + + static "of" do + args + end + + # ── Mutation helpers ── + + defp push({:obj, ref}, args) do + Heap.array_push(ref, args) + end + + defp push({:qb_arr, arr}, args), do: :array.size(arr) + length(args) + defp push(list, args) when is_list(list), do: length(list ++ args) + + defp pop({:obj, ref}, _) do + list = Heap.obj_to_list(ref) + + case List.pop_at(list, -1) do + {nil, _} -> + :undefined + + {last, rest} -> + Heap.put_obj(ref, rest) + last + end + end + + defp pop([_ | _] = list, _), do: List.last(list) + defp pop(_, _), do: :undefined + + defp shift({:obj, ref}, _) do + list = Heap.obj_to_list(ref) + + case list do + [first | rest] -> + Heap.put_obj(ref, rest) + first + + _ -> + :undefined + end + end + + defp shift(_, _), do: :undefined + + defp unshift({:obj, ref}, args) do + list = Heap.obj_to_list(ref) + new_list = args ++ list + Heap.put_obj(ref, new_list) + length(new_list) + end + + defp unshift(_, _), do: 0 + + # ── Higher-order ── + + defp map({:obj, ref}, [fun | _]) do + list = Heap.obj_to_list(ref) + + result = + Enum.map(Enum.with_index(list), fn {val, idx} -> + Runtime.call_callback(fun, [val, idx, list]) + end) + + Heap.wrap(result) + end + + defp map([_ | _] = list, [fun | _]) do + Enum.map(Enum.with_index(list), fn {val, idx} -> + Runtime.call_callback(fun, [val, idx, list]) + end) + end + + defp map(list, _), do: list + + defp filter({:obj, ref}, [fun | _]) do + list = Heap.obj_to_list(ref) + + result = + Enum.filter(Enum.with_index(list), fn {val, idx} -> + Runtime.truthy?(Runtime.call_callback(fun, [val, idx, list])) + end) + |> Enum.map(fn {val, _} -> val end) + + Heap.wrap(result) + end + + defp filter({:qb_arr, arr}, args), do: filter(:array.to_list(arr), args) + + defp filter(list, [fun | _]) when is_list(list) do + Enum.filter(Enum.with_index(list), fn {val, idx} -> + Runtime.truthy?(Runtime.call_callback(fun, [val, idx, list])) + end) + |> Enum.map(fn {val, _} -> val end) + end + + defp filter(list, _), do: list + + defp reduce({:obj, ref}, [fun | rest]) do + list = Heap.obj_to_list(ref) + reduce_impl(list, fun, rest) + end + + defp reduce({:qb_arr, arr}, args), do: reduce(:array.to_list(arr), args) + + defp reduce(list, [fun | rest]) when is_list(list), + do: reduce_impl(list, fun, rest) + + defp reduce([], [_, init | _]), do: init + defp reduce([val], _), do: val + + defp reduce_impl(list, fun, rest) do + {acc, items} = + case rest do + [init] -> {init, list} + _ -> {hd(list), tl(list)} + end + + Enum.reduce(Enum.with_index(items), acc, fn {val, idx}, a -> + Runtime.call_callback(fun, [a, val, idx, list]) + end) + end + + defp for_each({:obj, ref}, [fun | _]) do + list = Heap.obj_to_list(ref) + + Enum.each(Enum.with_index(list), fn {val, idx} -> + Runtime.call_callback(fun, [val, idx, list]) + end) + + :undefined + end + + defp for_each({:qb_arr, arr}, args), do: for_each(:array.to_list(arr), args) + + defp for_each(list, [fun | _]) when is_list(list) do + Enum.each(Enum.with_index(list), fn {val, idx} -> + Runtime.call_callback(fun, [val, idx, list]) + end) + + :undefined + end + + defp for_each(_, _), do: :undefined + + # ── Search ── + + defp index_of({:obj, ref}, args), do: index_of(Heap.obj_to_list(ref), args) + + defp index_of({:qb_arr, arr}, args), do: index_of(:array.to_list(arr), args) + + defp index_of(list, [val | rest]) when is_list(list) do + from = + case rest do + [f] when is_integer(f) and f >= 0 -> f + _ -> 0 + end + + list + |> Enum.drop(from) + |> Enum.find_index(&Runtime.strict_equal?(&1, val)) + |> then(fn + nil -> -1 + idx -> idx + from + end) + end + + defp index_of(_, _), do: -1 + + defp last_index_of({:obj, ref}, args), do: last_index_of(Heap.obj_to_list(ref), args) + + defp last_index_of({:qb_arr, arr}, args), do: last_index_of(:array.to_list(arr), args) + + defp last_index_of(list, [val | _]) when is_list(list) do + list + |> Enum.with_index() + |> Enum.reverse() + |> Enum.find_value(-1, fn {el, i} -> if Runtime.strict_equal?(el, val), do: i end) + end + + defp last_index_of(_, _), do: -1 + + defp includes({:obj, ref}, args), do: includes(Heap.obj_to_list(ref), args) + + defp includes({:qb_arr, arr}, args), do: includes(:array.to_list(arr), args) + + defp includes(list, [val | rest]) when is_list(list) do + from = + case rest do + [f] when is_integer(f) and f >= 0 -> f + _ -> 0 + end + + list |> Enum.drop(from) |> Enum.any?(&Runtime.strict_equal?(&1, val)) + end + + defp includes(_, _), do: false + + # ── Slice / splice ── + + defp slice({:obj, ref}, args), do: slice(Heap.obj_to_list(ref), args) + + defp slice({:qb_arr, arr}, args), do: slice(:array.to_list(arr), args) + + defp slice(list, args) when is_list(list) do + {start_idx, end_idx} = slice_args(list, args) + list |> Enum.slice(start_idx, max(end_idx - start_idx, 0)) + end + + defp slice(_, _), do: [] + + defp splice({:obj, ref}, args) do + list = Heap.obj_to_list(ref) + {removed, new_list} = do_splice(list, args) + Heap.put_obj(ref, new_list) + removed + end + + defp splice({:qb_arr, arr}, args), do: splice(:array.to_list(arr), args) + + defp splice(list, args) when is_list(list) do + {removed, _} = do_splice(list, args) + removed + end + + defp splice(_, _), do: [] + + defp do_splice(list, [start | rest]) do + s = Runtime.normalize_index(start, length(list)) + + {delete_count, insert} = + case rest do + [] -> {length(list) - s, []} + [dc | ins] -> {max(min(Runtime.to_int(dc), length(list) - s), 0), ins} + end + + {before, after_start} = Enum.split(list, s) + {removed, remaining} = Enum.split(after_start, delete_count) + {removed, before ++ insert ++ remaining} + end + + defp do_splice(list, _), do: {[], list} + + # ── Transform ── + + defp join({:obj, ref}, args), do: join(Heap.obj_to_list(ref), args) + + defp join({:qb_arr, arr}, args), do: join(:array.to_list(arr), args) + + defp join(list, [sep | _]) when is_list(list), + do: Enum.map_join(list, Runtime.stringify(sep), &array_element_to_string/1) + + defp join(list, []) when is_list(list), do: Enum.map_join(list, ",", &array_element_to_string/1) + defp join(_, _), do: "" + + defp array_element_to_string(:undefined), do: "" + defp array_element_to_string(nil), do: "" + defp array_element_to_string(val), do: Runtime.stringify(val) + + defp concat({:obj, ref}, args) do + list = Heap.obj_to_list(ref) + result = Enum.reduce(args, list, &concat_item(&1, &2)) + Heap.wrap(result) + end + + defp concat({:qb_arr, arr}, args), do: concat(:array.to_list(arr), args) + + defp concat(list, args) when is_list(list), do: Enum.reduce(args, list, &concat_item(&1, &2)) + + defp concat_item({:obj, r}, acc), do: acc ++ Heap.obj_to_list(r) + defp concat_item({:qb_arr, arr}, acc), do: acc ++ :array.to_list(arr) + defp concat_item(a, acc) when is_list(a), do: acc ++ a + defp concat_item(val, acc), do: acc ++ [val] + + defp reverse({:obj, ref}, _) do + list = Heap.obj_to_list(ref) + Heap.put_obj(ref, Enum.reverse(list)) + {:obj, ref} + end + + defp reverse({:qb_arr, arr}, args), do: reverse(:array.to_list(arr), args) + + defp reverse(list, _) when is_list(list), do: Enum.reverse(list) + defp reverse(_, _), do: [] + + defp sort({:obj, ref}, [_compare_fn | _] = args) do + list = Heap.obj_to_list(ref) + # Comparator fn returns negative (ab) + # Fall back to string sort if comparator can't be invoked + sorted = + try do + compare_fn = hd(args) + + Enum.sort(list, fn a, b -> + result = Runtime.call_callback(compare_fn, [a, b]) + + case result do + n when is_number(n) -> n < 0 + _ -> Runtime.stringify(a) < Runtime.stringify(b) + end + end) + catch + _ -> Enum.sort(list, fn a, b -> Runtime.stringify(a) < Runtime.stringify(b) end) + end + + Heap.put_obj(ref, sorted) + {:obj, ref} + end + + defp sort({:obj, ref}, []) do + list = Heap.obj_to_list(ref) + + Heap.put_obj( + ref, + Enum.sort(list, fn a, b -> + Runtime.stringify(a) < Runtime.stringify(b) + end) + ) + + {:obj, ref} + end + + defp sort({:qb_arr, arr}, args), do: sort(:array.to_list(arr), args) + + defp sort(list, [_ | _]) when is_list(list) do + Enum.sort(list, fn a, b -> Runtime.stringify(a) < Runtime.stringify(b) end) + end + + defp sort(list, []) when is_list(list), + do: + Enum.sort(list, fn a, b -> + Runtime.stringify(a) < Runtime.stringify(b) + end) + + defp flat({:obj, ref}, args), do: flat(Heap.obj_to_list(ref), args) + + defp flat({:qb_arr, arr}, args), do: flat(:array.to_list(arr), args) + + defp flat(list, _) when is_list(list) do + Enum.flat_map(list, fn + {:qb_arr, arr} -> + :array.to_list(arr) + + a when is_list(a) -> + a + + {:obj, ref} = obj -> + case Heap.get_obj(ref) do + {:qb_arr, arr} -> :array.to_list(arr) + a when is_list(a) -> a + _ -> [obj] + end + + val -> + [val] + end) + end + + defp flat(_, _), do: [] + + defp flat_map({:obj, ref}, args), do: flat_map(Heap.obj_to_list(ref), args) + + defp flat_map({:qb_arr, arr}, args), do: flat_map(:array.to_list(arr), args) + + defp flat_map(list, [cb | _]) when is_list(list) do + result = + Enum.flat_map(Enum.with_index(list), fn {item, idx} -> + val = Runtime.call_callback(cb, [item, idx, list]) + + case val do + {:obj, r} -> Heap.obj_to_list(r) + {:qb_arr, arr2} -> :array.to_list(arr2) + l when is_list(l) -> l + _ -> [val] + end + end) + + Heap.wrap(result) + end + + defp flat_map(_, _), do: :undefined + + defp fill({:obj, ref}, args) do + list = Heap.obj_to_list(ref) + val = arg(args, 0, :undefined) + start_idx = arg(args, 1, nil) || 0 + end_idx = arg(args, 2, nil) || length(list) + + new_list = + Enum.with_index(list, fn item, idx -> + if idx >= start_idx and idx < end_idx, do: val, else: item + end) + + Heap.put_obj(ref, new_list) + {:obj, ref} + end + + defp fill({:qb_arr, arr}, args), do: fill(:array.to_list(arr), args) + + defp fill(list, args) when is_list(list) do + val = arg(args, 0, :undefined) + List.duplicate(val, length(list)) + end + + defp fill(_, _), do: :undefined + + # ── Predicates ── + + defp find({:obj, ref}, args), do: find(Heap.obj_to_list(ref), args) + + defp find({:qb_arr, arr}, args), do: find(:array.to_list(arr), args) + + defp find(list, [fun | _]) when is_list(list) do + Enum.find_value(Enum.with_index(list), :undefined, fn {val, idx} -> + if Runtime.truthy?(Runtime.call_callback(fun, [val, idx, list])), do: val + end) + end + + defp find(_, _), do: :undefined + + defp find_index({:obj, ref}, args), do: find_index(Heap.obj_to_list(ref), args) + + defp find_index({:qb_arr, arr}, args), do: find_index(:array.to_list(arr), args) + + defp find_index(list, [fun | _]) when is_list(list) do + Enum.find_value(Enum.with_index(list), -1, fn {val, idx} -> + if Runtime.truthy?(Runtime.call_callback(fun, [val, idx, list])), do: idx + end) + end + + defp find_index(_, _), do: -1 + + defp every({:obj, ref}, args), do: every(Heap.obj_to_list(ref), args) + + defp every({:qb_arr, arr}, args), do: every(:array.to_list(arr), args) + + defp every(list, [fun | _]) when is_list(list) do + Enum.all?(Enum.with_index(list), fn {val, idx} -> + Runtime.truthy?(Runtime.call_callback(fun, [val, idx, list])) + end) + end + + defp every(_, _), do: true + + defp some({:obj, ref}, args), do: some(Heap.obj_to_list(ref), args) + + defp some({:qb_arr, arr}, args), do: some(:array.to_list(arr), args) + + defp some(list, [fun | _]) when is_list(list) do + Enum.any?(Enum.with_index(list), fn {val, idx} -> + Runtime.truthy?(Runtime.call_callback(fun, [val, idx, list])) + end) + end + + defp some(_, _), do: false + + # ── Array.from ── + + defp from(args) do + {source, map_fn} = + case args do + [s, f | _] -> {s, f} + [s] -> {s, nil} + _ -> {nil, nil} + end + + list = coerce_to_list(source) + + if map_fn do + Enum.map(Enum.with_index(list), fn {val, idx} -> + Runtime.call_callback(map_fn, [val, idx]) + end) + else + list + end + end + + defp coerce_to_list({:obj, ref}) do + case Heap.get_obj(ref) do + {:qb_arr, arr} -> :array.to_list(arr) + l when is_list(l) -> l + map when is_map(map) -> Heap.to_list({:obj, ref}) + _ -> [] + end + end + + defp coerce_to_list({:qb_arr, arr}), do: :array.to_list(arr) + defp coerce_to_list(l) when is_list(l), do: l + defp coerce_to_list(s) when is_binary(s), do: String.codepoints(s) + defp coerce_to_list(_), do: [] + + defp copy_within({:obj, ref}, args) do + list = Heap.obj_to_list(ref) + len = length(list) + target = Runtime.normalize_index(Runtime.to_int(arg(args, 0, 0)), len) + start_idx = Runtime.normalize_index(Runtime.to_int(arg(args, 1, 0)), len) + end_idx = Runtime.normalize_index(Runtime.to_int(arg(args, 2, nil) || len), len) + slice = Enum.slice(list, start_idx, end_idx - start_idx) + + new_list = + list + |> Enum.with_index() + |> Enum.map(fn {item, i} -> + offset = i - target + if i >= target and offset < length(slice), do: Enum.at(slice, offset), else: item + end) + + Heap.put_obj(ref, new_list) + {:obj, ref} + end + + defp copy_within(_, _), do: :undefined + + defp array_at({:obj, ref}, [idx | _]) do + list = Heap.obj_to_list(ref) + array_at(list, [idx]) + end + + defp array_at({:qb_arr, arr}, args), do: array_at(:array.to_list(arr), args) + + defp array_at(list, [idx | _]) when is_list(list) do + i = if is_number(idx), do: trunc(idx), else: 0 + i = if i < 0, do: length(list) + i, else: i + if i >= 0 and i < length(list), do: Enum.at(list, i), else: :undefined + end + + defp array_at(_, _), do: :undefined + + defp find_last({:obj, ref}, args), do: find_last(Heap.obj_to_list(ref), args) + + defp find_last({:qb_arr, arr}, args), do: find_last(:array.to_list(arr), args) + + defp find_last(list, [cb | _]) when is_list(list) do + list + |> Enum.reverse() + |> Enum.find(:undefined, fn item -> + Runtime.call_callback(cb, [item]) |> Runtime.truthy?() + end) + end + + defp find_last(_, _), do: :undefined + + defp find_last_index({:obj, ref}, args), + do: find_last_index(Heap.obj_to_list(ref), args) + + defp find_last_index({:qb_arr, arr}, args), do: find_last_index(:array.to_list(arr), args) + + defp find_last_index(list, [cb | _]) when is_list(list) do + list + |> Enum.with_index() + |> Enum.reverse() + |> Enum.find_value(-1, fn {item, idx} -> + if Runtime.call_callback(cb, [item, idx]) |> Runtime.truthy?(), do: idx + end) + end + + defp find_last_index(_, _), do: -1 + + defp to_reversed({:obj, ref}) do + list = Heap.obj_to_list(ref) + Heap.wrap(Enum.reverse(list)) + end + + defp to_reversed(_), do: :undefined + + defp to_sorted({:obj, ref}) do + list = Heap.obj_to_list(ref) + new_ref = make_ref() + + Heap.put_obj( + new_ref, + Enum.sort(list, fn a, b -> Runtime.stringify(a) <= Runtime.stringify(b) end) + ) + + {:obj, new_ref} + end + + defp to_sorted(_), do: :undefined + + defp make_array_iterator(arr, mode) do + list = + case arr do + {:obj, ref} -> + Heap.obj_to_list(ref) + + {:qb_arr, arr} -> + :array.to_list(arr) + + l when is_list(l) -> + l + + s when is_binary(s) -> + String.codepoints(s) + + _ -> + [] + end + + idx_ref = :atomics.new(1, signed: false) + + next_fn = + {:builtin, "next", + fn _args, _this -> + i = :atomics.get(idx_ref, 1) + + if i >= length(list) do + Heap.wrap(%{"value" => :undefined, "done" => true}) + else + :atomics.put(idx_ref, 1, i + 1) + + value = + case mode do + :values -> Enum.at(list, i, :undefined) + :keys -> i + :entries -> Heap.wrap([i, Enum.at(list, i, :undefined)]) + end + + Heap.wrap(%{"value" => value, "done" => false}) + end + end} + + object do + prop("next", next_fn) + end + end + + # ── Internal ── + + defp slice_args(list, [start, end_]) do + s = Runtime.normalize_index(start, length(list)) + + e = + if end_ < 0, do: max(length(list) + end_, 0), else: min(Runtime.to_int(end_), length(list)) + + {s, e} + end + + defp slice_args(list, [start]) do + {Runtime.normalize_index(start, length(list)), length(list)} + end + + defp slice_args(list, []) do + {0, length(list)} + end +end diff --git a/lib/quickbeam/vm/runtime/array_buffer.ex b/lib/quickbeam/vm/runtime/array_buffer.ex new file mode 100644 index 000000000..ec697d953 --- /dev/null +++ b/lib/quickbeam/vm/runtime/array_buffer.ex @@ -0,0 +1,179 @@ +defmodule QuickBEAM.VM.Runtime.ArrayBuffer do + @moduledoc "JS `ArrayBuffer` and `SharedArrayBuffer` built-in: constructor, transfer, resize, and slice operations." + + import QuickBEAM.VM.Heap.Keys + use QuickBEAM.VM.Builtin + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.Runtime + + @doc "Builds the JavaScript constructor object for this runtime builtin." + def constructor(args, _this \\ nil) do + {byte_length, max_byte_length} = + case args do + [n, opts | _] when is_integer(n) -> {n, max_byte_length_option(opts)} + [n | _] when is_integer(n) -> {n, nil} + _ -> {0, nil} + end + + map = %{buffer() => :binary.copy(<<0>>, byte_length), "byteLength" => byte_length} + map = if max_byte_length, do: Map.put(map, "maxByteLength", max_byte_length), else: map + Heap.wrap(map) + end + + proto "transfer" do + case this do + {:obj, ref} -> + map = Heap.get_obj(ref, %{}) + + if is_map(map) do + new_buf = Map.get(map, buffer(), <<>>) + + Heap.put_obj( + ref, + Map.merge(map, %{buffer() => <<>>, "byteLength" => 0, "__detached__" => true}) + ) + + Heap.wrap(%{buffer() => new_buf, "byteLength" => byte_size(new_buf)}) + else + :undefined + end + + _ -> + :undefined + end + end + + proto "resize" do + case this do + {:obj, ref} -> + map = Heap.get_obj(ref, %{}) + + new_size = + case args do + [n | _] when is_number(n) -> trunc(n) + _ -> 0 + end + + if is_map(map) do + old_buf = Map.get(map, buffer(), <<>>) + + new_buf = + if new_size <= byte_size(old_buf) do + binary_part(old_buf, 0, new_size) + else + old_buf <> :binary.copy(<<0>>, new_size - byte_size(old_buf)) + end + + Heap.put_obj(ref, Map.merge(map, %{buffer() => new_buf, "byteLength" => new_size})) + end + + :undefined + + _ -> + :undefined + end + end + + proto "slice" do + do_slice(this, args) + end + + proto "sliceToImmutable" do + case this do + {:obj, ref} -> + map = Heap.get_obj(ref, %{}) + buf = Map.get(map, buffer(), <<>>) + len = byte_size(buf) + + s = + case args do + [n | _] when is_number(n) -> normalize_idx(trunc(n), len) + _ -> 0 + end + + e = + case args do + [_, n | _] when is_number(n) -> normalize_idx(trunc(n), len) + _ -> len + end + + new_len = max(0, e - s) + new_buf = if new_len > 0, do: binary_part(buf, s, new_len), else: <<>> + Heap.wrap(%{buffer() => new_buf, "byteLength" => new_len, "__immutable__" => true}) + + _ -> + :undefined + end + end + + defp do_slice(this, args) do + case this do + {:obj, ref} -> + map = Heap.get_obj(ref, %{}) + + if is_map(map) and Map.get(map, "__detached__") do + JSThrow.type_error!("ArrayBuffer is detached") + end + + buf = Map.get(map, buffer(), <<>>) + len = byte_size(buf) + + s = + case args do + [n | _] when is_number(n) -> normalize_idx(trunc(n), len) + _ -> 0 + end + + e = + case args do + [_, n | _] when is_number(n) -> normalize_idx(trunc(n), len) + _ -> len + end + + new_len = max(0, e - s) + + read_array_buffer_species() + + # After species getter, re-check the buffer (it may have been resized/detached) + map2 = Heap.get_obj(ref, %{}) + buf2 = Map.get(map2, buffer(), <<>>) + + if byte_size(buf2) < s + new_len do + JSThrow.type_error!("ArrayBuffer is detached") + end + + new_buf = if new_len > 0, do: binary_part(buf2, s, new_len), else: <<>> + Heap.wrap(%{buffer() => new_buf, "byteLength" => new_len}) + + _ -> + :undefined + end + end + + defp normalize_idx(n, len) when n < 0, do: max(0, len + n) + defp normalize_idx(n, len), do: min(n, len) + + defp max_byte_length_option({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> Map.get(map, "maxByteLength") + _ -> nil + end + end + + defp max_byte_length_option(_), do: nil + + defp read_array_buffer_species do + case Runtime.global_constructor("ArrayBuffer") do + nil -> + nil + + ctor -> + case Map.get(Heap.get_ctor_statics(ctor), {:symbol, "Symbol.species"}) do + {:accessor, getter, _} when getter != nil -> Runtime.call_callback(getter, []) + _ -> nil + end + end + end +end diff --git a/lib/quickbeam/vm/runtime/binding_provider.ex b/lib/quickbeam/vm/runtime/binding_provider.ex new file mode 100644 index 000000000..a432ca66b --- /dev/null +++ b/lib/quickbeam/vm/runtime/binding_provider.ex @@ -0,0 +1,5 @@ +defmodule QuickBEAM.VM.Runtime.BindingProvider do + @moduledoc "Contract for runtime modules that contribute global JS bindings." + + @callback bindings() :: map() +end diff --git a/lib/quickbeam/vm/runtime/boolean.ex b/lib/quickbeam/vm/runtime/boolean.ex new file mode 100644 index 000000000..afd3afd3b --- /dev/null +++ b/lib/quickbeam/vm/runtime/boolean.ex @@ -0,0 +1,27 @@ +defmodule QuickBEAM.VM.Runtime.Boolean do + @moduledoc "JavaScript `Boolean` constructor and prototype builtins." + + use QuickBEAM.VM.Builtin + alias QuickBEAM.VM.Runtime + + proto "toString" do + Atom.to_string(this) + end + + proto "valueOf" do + this + end + + @doc "Builds the JavaScript constructor object for this runtime builtin." + def constructor do + fn + args, {:obj, _} = this -> + val = args |> arg(0, false) |> Runtime.truthy?() + QuickBEAM.VM.ObjectModel.Put.put(this, "__wrapped_boolean__", val) + this + + args, _ -> + args |> arg(0, false) |> Runtime.truthy?() + end + end +end diff --git a/lib/quickbeam/vm/runtime/builtin_object.ex b/lib/quickbeam/vm/runtime/builtin_object.ex new file mode 100644 index 000000000..90362fc88 --- /dev/null +++ b/lib/quickbeam/vm/runtime/builtin_object.ex @@ -0,0 +1,15 @@ +defmodule QuickBEAM.VM.Runtime.BuiltinObject do + @moduledoc "Contract for modules that expose JS builtin constructor/prototype/static entries." + + @callback constructor() :: term() + @callback constructor(list(), term()) :: term() + @callback object() :: term() + @callback proto_property(term()) :: term() + @callback static_property(term()) :: term() + + @optional_callbacks constructor: 0, + constructor: 2, + object: 0, + proto_property: 1, + static_property: 1 +end diff --git a/lib/quickbeam/vm/runtime/console.ex b/lib/quickbeam/vm/runtime/console.ex new file mode 100644 index 000000000..533caff46 --- /dev/null +++ b/lib/quickbeam/vm/runtime/console.ex @@ -0,0 +1,34 @@ +defmodule QuickBEAM.VM.Runtime.Console do + @moduledoc "Minimal core `console` builtin used outside the richer Web console API." + + use QuickBEAM.VM.Builtin + + alias QuickBEAM.VM.Runtime + + js_object "console" do + method "log" do + IO.puts(Enum.map_join(args, " ", &Runtime.stringify/1)) + :undefined + end + + method "warn" do + IO.puts(:stderr, Enum.map_join(args, " ", &Runtime.stringify/1)) + :undefined + end + + method "error" do + IO.puts(:stderr, Enum.map_join(args, " ", &Runtime.stringify/1)) + :undefined + end + + method "info" do + IO.puts(Enum.map_join(args, " ", &Runtime.stringify/1)) + :undefined + end + + method "debug" do + IO.puts(Enum.map_join(args, " ", &Runtime.stringify/1)) + :undefined + end + end +end diff --git a/lib/quickbeam/vm/runtime/constructors.ex b/lib/quickbeam/vm/runtime/constructors.ex new file mode 100644 index 000000000..208dec8be --- /dev/null +++ b/lib/quickbeam/vm/runtime/constructors.ex @@ -0,0 +1,114 @@ +defmodule QuickBEAM.VM.Runtime.Constructors do + @moduledoc "Helpers for looking up and invoking globally registered JS constructors." + + alias QuickBEAM.VM.{Heap, Runtime} + + @doc "Registers a constructor without creating a prototype." + def register(name, constructor), do: register(name, constructor, []) + + @doc "Associates a constructor with its class prototype and static `prototype` property." + def put_prototype(ctor, proto) do + Heap.put_class_proto(ctor, proto) + Heap.put_ctor_static(ctor, "prototype", proto) + ctor + end + + @doc "Registers a constructor using options such as `:module`, `:prototype`, and `:auto_proto`." + def register(name, constructor, opts) when is_list(opts) do + ctor = {:builtin, name, constructor} + + opts + |> Keyword.get(:module) + |> put_module_static(ctor) + + case Keyword.get(opts, :prototype) do + nil -> + if Keyword.get(opts, :auto_proto, false) do + register_proto(ctor, %{}, nil) + end + + proto -> + put_prototype(ctor, proto) + end + + ctor + end + + @doc "Registers a constructor with a freshly wrapped prototype map and optional parent prototype." + def register(name, constructor, proto_properties, parent) when is_map(proto_properties) do + ctor = {:builtin, name, constructor} + register_proto(ctor, proto_properties, parent) + ctor + end + + defp register_proto(ctor, proto_properties, parent) do + proto = + proto_properties + |> Map.put("constructor", ctor) + |> QuickBEAM.VM.Builtin.put_if_present("__proto__", parent) + |> Heap.wrap() + + put_prototype(ctor, proto) + end + + defp put_module_static(nil, _ctor), do: :ok + defp put_module_static(module, ctor), do: Heap.put_ctor_static(ctor, :__module__, module) + + @doc "Looks up a constructor by JavaScript global name." + def lookup(name) do + case Map.get(Runtime.global_bindings(), name) do + {:builtin, _, _} = ctor -> ctor + _ -> nil + end + end + + @doc "Returns the class prototype for the globally registered constructor `name`." + def class_proto(name) do + case lookup(name) do + nil -> nil + ctor -> Heap.get_class_proto(ctor) + end + end + + @doc "Invokes a global constructor and falls back when it is not available." + def construct(name, args, fallback), do: construct(name, args, fallback, & &1) + + @doc "Invokes a global constructor and updates its object map before prototype patching." + def construct(name, args, fallback, update_object) do + case lookup(name) do + {:builtin, _, cb} = ctor when is_function(cb, 2) -> + cb.(args, nil) + |> update_constructed_object(ctor, update_object) + + _ -> + fallback.() + end + end + + defp update_constructed_object({:obj, ref} = result, ctor, update_object) do + proto = Heap.get_class_proto(ctor) + + Heap.update_obj(ref, %{}, fn + map when is_map(map) -> + map + |> update_constructed_map(ref, update_object) + |> put_proto_if_missing(proto) + + other -> + other + end) + + result + end + + defp update_constructed_object(result, _ctor, _update_object), do: result + + defp update_constructed_map(map, _ref, update_object) when is_function(update_object, 1), + do: update_object.(map) + + defp update_constructed_map(map, ref, update_object) when is_function(update_object, 2), + do: update_object.(map, ref) + + defp put_proto_if_missing(map, nil), do: map + defp put_proto_if_missing(map, proto), do: Map.put_new(map, "__proto__", proto) +end diff --git a/lib/quickbeam/vm/runtime/date.ex b/lib/quickbeam/vm/runtime/date.ex new file mode 100644 index 000000000..1af6aba11 --- /dev/null +++ b/lib/quickbeam/vm/runtime/date.ex @@ -0,0 +1,557 @@ +defmodule QuickBEAM.VM.Runtime.Date do + @moduledoc "JS `Date` built-in: constructor, parsing, formatting, and all get/set prototype methods." + + import QuickBEAM.VM.Heap.Keys + use QuickBEAM.VM.Builtin + alias QuickBEAM.VM.Heap + + @epoch_gs 719_528 * 86_400 + + # ── Constructor ── + + @doc "Builds the JavaScript constructor object for this runtime builtin." + def constructor(_args, nil) do + ms = System.system_time(:millisecond) + + case DateTime.from_unix(ms, :millisecond) do + {:ok, dt} -> Calendar.strftime(dt, "%a %b %d %Y %H:%M:%S GMT+0000 (UTC)") + _ -> "Invalid Date" + end + end + + def constructor(args, _this) do + ms = + case args do + [] -> System.system_time(:millisecond) + [val] when is_number(val) -> trunc(val) + [s] when is_binary(s) -> parse_date_string(s) + [_ | _] when length(args) >= 2 -> local_from_components(args) + _ -> System.system_time(:millisecond) + end + + Heap.wrap(%{date_ms() => ms}) + end + + # ── Statics ── + + static("now", do: System.system_time(:millisecond)) + static("parse", do: parse_date_string(to_string(hd(args)))) + static("UTC", do: utc_from_components(args)) + + # ── Getters ── + + proto("getTime", do: get_ms(this)) + proto("valueOf", do: get_ms(this)) + proto("getFullYear", do: dt_field(this, :year)) + proto("getMonth", do: dt_field(this, :month, &(&1 - 1))) + proto("getDate", do: dt_field(this, :day)) + proto("getHours", do: dt_field(this, :hour)) + proto("getMinutes", do: dt_field(this, :minute)) + proto("getSeconds", do: dt_field(this, :second)) + proto("getMilliseconds", do: with_ms(this, &rem(&1, 1000))) + proto("getUTCFullYear", do: dt_field(this, :year)) + proto("getDay", do: with_dt(this, &(Date.day_of_week(&1) |> rem(7)))) + proto("getTimezoneOffset", do: tz_offset_minutes()) + + # ── Setters ── + + proto("setTime", do: put_ms(this, hd(args))) + proto("setFullYear", do: set_fields(this, [:year], args)) + proto("setMonth", do: set_field(this, :month, trunc(hd(args)) + 1)) + proto("setDate", do: set_fields(this, [:day], args)) + proto("setHours", do: set_fields(this, [:hour, :minute, :second], args)) + proto("setMinutes", do: set_fields(this, [:minute, :second], args)) + proto("setSeconds", do: set_fields(this, [:second], args)) + proto("setMilliseconds", do: set_ms_field(this, args)) + proto("setUTCHours", do: set_fields(this, [:hour, :minute, :second], args)) + proto("setUTCMinutes", do: set_fields(this, [:minute, :second], args)) + proto("setUTCSeconds", do: set_fields(this, [:second], args)) + proto("setUTCMilliseconds", do: set_ms_field(this, args)) + proto("setUTCFullYear", do: set_fields(this, [:year], args)) + proto("setUTCMonth", do: set_field(this, :month, trunc(hd(args)) + 1)) + proto("setUTCDate", do: set_fields(this, [:day], args)) + + # ── Formatting ── + + proto("toISOString", do: fmt_dt(this, &DateTime.to_iso8601/1)) + proto("toJSON", do: fmt_dt(this, &DateTime.to_iso8601/1)) + + proto("toString", + do: fmt_dt(this, &Calendar.strftime(&1, "%a %b %d %Y %H:%M:%S GMT+0000 (UTC)")) + ) + + proto("toDateString", do: fmt_dt(this, &Calendar.strftime(&1, "%a %b %d %Y"))) + proto("toTimeString", do: fmt_dt(this, &Calendar.strftime(&1, "%H:%M:%S GMT+0000"))) + proto("toUTCString", do: fmt_dt(this, &Calendar.strftime(&1, "%a, %d %b %Y %H:%M:%S GMT"))) + proto("toLocaleTimeString", do: fmt_local(this, "%I:%M:%S %p")) + proto("toLocaleDateString", do: fmt_local(this, "%m/%d/%Y")) + proto("toLocaleString", do: fmt_local(this, "%m/%d/%Y, %I:%M:%S %p")) + + # ── Internal: ms ↔ DateTime ── + + defp get_ms({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + %{date_ms() => ms} -> ms + _ -> :nan + end + end + + defp get_ms(_), do: :nan + + defp ms_to_dt(ms) when is_number(ms) do + ms = trunc(ms) + DateTime.from_gregorian_seconds(div(ms, 1000) + @epoch_gs, {rem(abs(ms), 1000) * 1000, 3}) + rescue + _ -> nil + end + + defp ms_to_dt(_), do: nil + + defp dt_field(this, field, transform \\ & &1) do + case ms_to_dt(get_ms(this)) do + nil -> :nan + dt -> transform.(Map.get(dt, field)) + end + end + + defp with_dt(this, fun) do + case ms_to_dt(get_ms(this)) do + nil -> :nan + dt -> fun.(dt) + end + end + + defp with_ms(this, fun) do + case get_ms(this) do + ms when is_number(ms) -> fun.(trunc(ms)) + _ -> :nan + end + end + + defp fmt_dt(this, fun) do + case ms_to_dt(get_ms(this)) do + nil -> "Invalid Date" + dt -> fun.(dt) + end + end + + defp fmt_local(this, pattern) do + case ms_to_dt(get_ms(this)) do + nil -> + "Invalid Date" + + dt -> + local_erl = + :calendar.universal_time_to_local_time( + {{dt.year, dt.month, dt.day}, {dt.hour, dt.minute, dt.second}} + ) + + Calendar.strftime(NaiveDateTime.from_erl!(local_erl), pattern) + end + end + + defp put_ms({:obj, ref}, ms) when is_number(ms) do + Heap.put_obj(ref, Map.put(Heap.get_obj(ref, %{}), date_ms(), trunc(ms))) + trunc(ms) + end + + defp put_ms(_, _), do: :nan + + defp set_field(this, field, value) do + case ms_to_dt(get_ms(this)) do + nil -> :nan + dt -> put_ms(this, DateTime.to_unix(Map.put(dt, field, trunc(value)), :millisecond)) + end + rescue + _ -> :nan + end + + defp set_fields(this, fields, values) do + case ms_to_dt(get_ms(this)) do + nil -> + :nan + + dt -> + new_dt = + Enum.zip(fields, values) + |> Enum.reduce(dt, fn {field, val}, acc -> + if is_number(val), do: Map.put(acc, field, trunc(val)), else: acc + end) + + put_ms(this, DateTime.to_unix(new_dt, :millisecond)) + end + rescue + _ -> :nan + end + + defp set_ms_field(this, args) do + with_ms(this, &put_ms(this, div(&1, 1000) * 1000 + trunc(hd(args)))) + end + + defp tz_offset_minutes do + {utc, local} = {:calendar.universal_time(), :calendar.local_time()} + + div( + :calendar.datetime_to_gregorian_seconds(utc) - + :calendar.datetime_to_gregorian_seconds(local), + 60 + ) + end + + # ── Date component → ms ── + + defp utc_from_components(args) do + with {:ok, components} <- extract_components(args) do + utc_ms(components) + end + end + + defp local_from_components(args) do + with {:ok, {year, month, day, hour, minute, second, ms_part}} <- extract_components(args) do + local_erl = {{year, month, max(day, 1)}, {hour, minute, second}} + + case :calendar.local_time_to_universal_time_dst(local_erl) do + [utc_erl | _] -> + local_ndt = NaiveDateTime.from_erl!(local_erl) + utc_ndt = NaiveDateTime.from_erl!(utc_erl) + offset_min = div(NaiveDateTime.diff(local_ndt, utc_ndt, :second) + 30, 60) + + DateTime.to_unix(DateTime.from_naive!(local_ndt, "Etc/UTC"), :millisecond) - + offset_min * 60_000 + ms_part + + [] -> + utc_ms({year, month, max(day, 1), hour, minute, second, ms_part}) - + tz_offset_minutes() * -60_000 + end + end + rescue + _ -> :nan + end + + defp extract_components(args) do + padded = args ++ List.duplicate(0, 7) + count = min(length(args), 7) + + vals = + padded + |> Enum.take(count) + |> Enum.map(fn + v when v in [:nan, :NaN, :infinity, :neg_infinity] -> :nan + v when is_number(v) -> v + _ -> :nan + end) + + if Enum.any?(vals, &(&1 == :nan)) do + :nan + else + y = Enum.at(vals, 0, 0) + year = if y >= 0 and y <= 99, do: 1900 + trunc(y), else: trunc(y) + + {:ok, + {year, trunc(Enum.at(vals, 1, 0)) + 1, trunc(Enum.at(vals, 2, 1)), + trunc(Enum.at(vals, 3, 0)), trunc(Enum.at(vals, 4, 0)), trunc(Enum.at(vals, 5, 0)), + trunc(Enum.at(vals, 6, 0))}} + end + end + + defp utc_ms({year, month, day, hour, minute, second, ms_part}) do + year = year + div(month - 1, 12) + month = rem(rem(month - 1, 12) + 12, 12) + 1 + + case make_day(year, month) do + :nan -> + :nan + + base_days -> + day_f = (day - 1 + base_days) * 1.0 + + time_ms = + ((day_f * 24 + hour * 1.0) * 60 + minute * 1.0) * 60_000 + + second * 1000.0 + ms_part * 1.0 + + time_ms = trunc(time_ms) + if abs(time_ms) > 8_640_000_000_000_000, do: :nan, else: time_ms + end + end + + defp make_day(year, month) when year >= 0 do + :calendar.date_to_gregorian_days(year, month, 1) - 719_528 + rescue + _ -> :nan + end + + defp make_day(year, month) do + y = if month <= 2, do: year - 1, else: year + era = div(y - 399, 400) + yoe = y - era * 400 + doy = div(153 * (month + if(month > 2, do: -3, else: 9)) + 2, 5) + doe = yoe * 365 + div(yoe, 4) - div(yoe, 100) + doy + era * 146_097 + doe - 719_468 + end + + # ── Date.parse ── + + @doc "Helper for js `date` built-in: constructor, parsing, formatting, and all get/set prototype methods." + def parse_date_string(s) when is_binary(s) do + s = String.trim(s) + if s == "", do: :nan, else: do_parse(s) + end + + def parse_date_string(_), do: :nan + + defp do_parse(s) do + s_expanded = expand_short_iso(s) + has_explicit_tz = String.contains?(s, "Z") or has_tz_suffix?(s) + has_time = String.contains?(s_expanded, "T") + + with :miss <- try_rfc3339(s_expanded, has_explicit_tz, has_time), + :miss <- try_iso_date(s), + :miss <- try_informal(s), + :miss <- try_partial(s) do + :nan + end + end + + defp has_tz_suffix?(s) when byte_size(s) >= 6, + do: String.at(s, -6) in ["+", "-"] and String.at(s, -3) == ":" + + defp has_tz_suffix?(_), do: false + + defp try_rfc3339(s, has_explicit_tz, has_time) do + with_tz = + cond do + String.contains?(s, "Z") or has_tz_suffix?(s) -> s + String.contains?(s, "T") -> s <> "Z" + true -> s + end + + case safe_rfc3339_parse(with_tz) do + {:ok, ms} -> + if has_time and not has_explicit_tz, + do: ms + tz_offset_minutes() * 60_000, + else: ms + + :error -> + :miss + end + end + + defp safe_rfc3339_parse(s) do + us = :calendar.rfc3339_to_system_time(String.to_charlist(s), unit: :microsecond) + {:ok, div(us, 1000)} + rescue + _ -> :error + catch + _, _ -> :error + end + + defp try_iso_date(s) do + case Date.from_iso8601(s) do + {:ok, d} -> utc_ms({d.year, d.month, d.day, 0, 0, 0, 0}) + _ -> :miss + end + end + + defp try_partial(s) do + {sign, digits, has_sign} = + case s do + "+" <> r -> {1, r, true} + "-" <> r -> {-1, r, true} + r -> {1, r, false} + end + + valid_year_len? = &(byte_size(&1) == 4 or (byte_size(&1) == 6 and has_sign)) + + case String.split(digits, "-", parts: 3) do + [y] -> + if valid_year_len?.(y) do + case Integer.parse(y) do + {year, ""} -> utc_ms({sign * year, 1, 1, 0, 0, 0, 0}) + _ -> :miss + end + else + :miss + end + + [y, m] -> + if valid_year_len?.(y) do + with {year, ""} <- Integer.parse(y), + {month, ""} <- Integer.parse(m), + do: utc_ms({sign * year, month, 1, 0, 0, 0, 0}), + else: (_ -> :miss) + else + :miss + end + + _ -> + :miss + end + end + + # ── Informal date parsing ── + + @month_names %{ + "jan" => 1, + "feb" => 2, + "mar" => 3, + "apr" => 4, + "may" => 5, + "jun" => 6, + "jul" => 7, + "aug" => 8, + "sep" => 9, + "oct" => 10, + "nov" => 11, + "dec" => 12 + } + + @day_names ~w(sun mon tue wed thu fri sat) + + defp try_informal(s) do + s = strip_day_name(String.trim(s)) + + case String.split(s, " ", parts: 4) do + [a, b, c | rest] -> + time_tz = String.trim(Enum.join(rest, " ")) + + result = + if byte_size(a) == 4, do: parse_ymd(a, b, c), else: parse_mdy(a, b, c) + + case result do + {:ok, year, month, day} -> + {hour, minute, second, tz_offset} = parse_informal_time(time_tz) + + if tz_offset != nil do + utc_ms({year, month, day, hour, minute, second, 0}) - tz_offset * 60_000 + else + local_from_components([year, month - 1, day, hour, minute, second, 0]) + end + + :miss -> + :miss + end + + _ -> + :miss + end + end + + defp strip_day_name(s) do + case String.split(s, " ", parts: 2) do + [w, rest] -> + if String.downcase(String.slice(w, 0..2)) in @day_names, do: rest, else: s + + _ -> + s + end + end + + defp parse_ymd(year_str, month_str, day_str) do + with {year, ""} <- Integer.parse(year_str), + month when is_integer(month) <- + Map.get(@month_names, String.downcase(String.slice(month_str, 0..2))), + {day, ""} <- Integer.parse(day_str) do + {:ok, year, month, day} + else + _ -> :miss + end + end + + defp parse_mdy(month_str, day_str, year_str) do + with month when is_integer(month) <- + Map.get(@month_names, String.downcase(String.slice(month_str, 0..2))), + {day, ""} <- Integer.parse(day_str), + {year, ""} <- Integer.parse(year_str) do + {:ok, year, month, day} + else + _ -> :miss + end + end + + defp parse_informal_time(""), do: {0, 0, 0, nil} + + defp parse_informal_time(s) do + parts = String.split(s, " ") + {time_part, rest} = List.pop_at(parts, 0, "") + + {ampm, tz_parts} = + case rest do + [p | r] when p in ~w(AM PM am pm) -> {String.downcase(p), r} + r -> {nil, r} + end + + {h, m, sec} = + case String.split(time_part, ":") do + [hh, mm, ss] -> {String.to_integer(hh), String.to_integer(mm), String.to_integer(ss)} + [hh, mm] -> {String.to_integer(hh), String.to_integer(mm), 0} + _ -> {0, 0, 0} + end + + h = + case ampm do + "am" -> if h == 12, do: 0, else: h + "pm" -> if h == 12, do: 12, else: h + 12 + nil -> h + end + + tz_str = String.trim(Enum.join(tz_parts, " ")) + {h, m, sec, if(tz_str == "", do: nil, else: parse_tz_offset(tz_str))} + end + + defp parse_tz_offset(""), do: 0 + defp parse_tz_offset("Z"), do: 0 + defp parse_tz_offset("GMT" <> rest), do: parse_tz_offset(rest) + defp parse_tz_offset("UTC" <> rest), do: parse_tz_offset(rest) + defp parse_tz_offset("+" <> o), do: parse_tz_minutes(o) + defp parse_tz_offset("-" <> o), do: -parse_tz_minutes(o) + defp parse_tz_offset(_), do: 0 + + defp parse_tz_minutes(<>), + do: String.to_integer(h) * 60 + String.to_integer(m) + + defp parse_tz_minutes(s) do + case Integer.parse(s) do + {n, ""} -> n * 60 + _ -> 0 + end + end + + # ── ISO helpers ── + + defp expand_short_iso(<>) + when y1 in ?0..?9 and y2 in ?0..?9 and y3 in ?0..?9 and y4 in ?0..?9, + do: pad_seconds(<>) + + defp expand_short_iso(<>) + when y1 in ?0..?9 and y2 in ?0..?9 and y3 in ?0..?9 and y4 in ?0..?9 and + m1 in ?0..?9 and m2 in ?0..?9, + do: pad_seconds(<>) + + defp expand_short_iso(s), do: pad_seconds(s) + + defp pad_seconds(s) do + case String.split(s, "T", parts: 2) do + [date, time] -> + {time_part, tz} = split_time_tz(time) + + padded = + case String.split(time_part, ":") do + [h, m] -> h <> ":" <> m <> ":00" + _ -> time_part + end + + date <> "T" <> padded <> tz + + _ -> + s + end + end + + defp split_time_tz(time) do + cond do + String.ends_with?(time, "Z") -> String.split_at(time, -1) + byte_size(time) >= 6 and String.at(time, -6) in ["+", "-"] -> String.split_at(time, -6) + true -> {time, ""} + end + end +end diff --git a/lib/quickbeam/vm/runtime/errors.ex b/lib/quickbeam/vm/runtime/errors.ex new file mode 100644 index 000000000..0d8e3db91 --- /dev/null +++ b/lib/quickbeam/vm/runtime/errors.ex @@ -0,0 +1,104 @@ +defmodule QuickBEAM.VM.Runtime.Errors do + @moduledoc "JS Error constructors and prototype: `Error`, `TypeError`, `RangeError`, and the other standard error types." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, object: 2] + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.Runtime + alias QuickBEAM.VM.Runtime.Constructors + alias QuickBEAM.VM.Stacktrace + + @error_types ~w(Error TypeError RangeError SyntaxError ReferenceError URIError EvalError) + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + error_proto_ref = make_ref() + error_ctor = {:builtin, "Error", fn args, _this -> error_constructor("Error", args) end} + + error_tostring = + {:builtin, "toString", + fn _args, this -> + name = + case QuickBEAM.VM.ObjectModel.Get.get(this, "name") do + nil -> "Error" + :undefined -> "Error" + n -> Runtime.stringify(n) + end + + msg = + case QuickBEAM.VM.ObjectModel.Get.get(this, "message") do + nil -> "" + :undefined -> "" + m -> Runtime.stringify(m) + end + + if msg == "", do: name, else: name <> ": " <> msg + end} + + Heap.put_obj( + error_proto_ref, + object heap: false do + prop("name", "Error") + prop("message", "") + prop("constructor", error_ctor) + prop("toString", error_tostring) + end + ) + + Constructors.put_prototype(error_ctor, {:obj, error_proto_ref}) + + Heap.put_ctor_static( + error_ctor, + "captureStackTrace", + {:builtin, "captureStackTrace", + fn + [], _ -> + JSThrow.type_error!("Cannot convert undefined to object") + + [obj | rest], _ -> + filter_fun = arg(rest, 0, nil) + + case obj do + {:obj, _} -> Stacktrace.attach_stack(obj, filter_fun) + _ -> :ok + end + + :undefined + end} + ) + + Heap.put_ctor_static(error_ctor, "prepareStackTrace", :undefined) + Heap.put_ctor_static(error_ctor, "stackTraceLimit", 10) + + derived = + for name <- Enum.reject(@error_types, &(&1 == "Error")), into: %{} do + proto_ref = make_ref() + ctor = {:builtin, name, fn args, _this -> error_constructor(name, args) end} + + Heap.put_obj( + proto_ref, + object heap: false do + prop("__proto__", {:obj, error_proto_ref}) + prop("name", name) + prop("message", "") + prop("constructor", ctor) + end + ) + + Constructors.put_prototype(ctor, {:obj, proto_ref}) + Heap.put_ctor_static(ctor, "__proto__", error_ctor) + {name, ctor} + end + + Map.put(derived, "Error", error_ctor) + end + + defp error_constructor(name, args) do + msg = arg(args, 0, "") + error = Heap.make_error(Runtime.stringify(msg), name) + Stacktrace.attach_stack(error) + end +end diff --git a/lib/quickbeam/vm/runtime/function.ex b/lib/quickbeam/vm/runtime/function.ex new file mode 100644 index 000000000..2d94b01a9 --- /dev/null +++ b/lib/quickbeam/vm/runtime/function.ex @@ -0,0 +1,137 @@ +defmodule QuickBEAM.VM.Runtime.Function do + @moduledoc "JS `Function` prototype: `call`, `apply`, `bind`, and property access for name/length/fileName." + alias QuickBEAM.VM.{Builtin, Bytecode, Heap, Invocation} + + @doc "Builds the JavaScript prototype object for this runtime builtin." + def prototype do + Heap.wrap(%{ + "call" => {:builtin, "call", fn args, this -> fn_call(this, args, this) end}, + "apply" => {:builtin, "apply", fn args, this -> fn_apply(this, args, this) end}, + "bind" => {:builtin, "bind", fn args, this -> fn_bind(this, args, this) end} + }) + end + + # ── Function prototype ── + + @doc "Returns a prototype property value for the given JavaScript property key." + def proto_property(fun, "call") do + {:builtin, "call", fn args, this -> fn_call(fun, args, this) end} + end + + def proto_property(fun, "apply") do + {:builtin, "apply", fn args, this -> fn_apply(fun, args, this) end} + end + + def proto_property(fun, "bind") do + {:builtin, "bind", fn args, this -> fn_bind(fun, args, this) end} + end + + def proto_property(%Bytecode.Function{} = f, "name"), do: f.name || "" + def proto_property(%Bytecode.Function{} = f, "length"), do: f.defined_arg_count + def proto_property(%Bytecode.Function{} = f, "fileName"), do: f.filename || "" + def proto_property(%Bytecode.Function{} = f, "lineNumber"), do: f.line_num + def proto_property(%Bytecode.Function{} = f, "columnNumber"), do: f.col_num + + def proto_property({:closure, _, %Bytecode.Function{} = f}, "name"), + do: f.name || "" + + def proto_property({:closure, _, %Bytecode.Function{} = f}, "length"), + do: f.defined_arg_count + + def proto_property({:closure, _, %Bytecode.Function{} = f}, "fileName"), do: f.filename || "" + def proto_property({:closure, _, %Bytecode.Function{} = f}, "lineNumber"), do: f.line_num + def proto_property({:closure, _, %Bytecode.Function{} = f}, "columnNumber"), do: f.col_num + + def proto_property({:bound, _, inner, _, _}, key) when key not in ["length", "name"], + do: proto_property(inner, key) + + def proto_property({:bound, len, _, _, _}, "length"), do: len + def proto_property(_fun, "length"), do: 0 + def proto_property({:bound, _, {:builtin, name, _}, _, _}, "name"), do: name + def proto_property(_fun, "name"), do: "" + + def proto_property(fun, "toString") do + {:builtin, "toString", + fn _, _ -> + case fun do + {:closure, _, %Bytecode.Function{source: src}} when is_binary(src) and src != "" -> src + %Bytecode.Function{source: src} when is_binary(src) and src != "" -> src + {:builtin, name, _} -> "function #{name}() { [native code] }" + {:bound, _, _, _, _} -> "function () { [native code] }" + _ -> "function () { [native code] }" + end + end} + end + + def proto_property(_fun, "constructor") do + case Heap.get_ctx() do + %{globals: globals} -> Map.get(globals, "Function", :undefined) + _ -> :undefined + end + end + + def proto_property(_fun, _), do: :undefined + + defp fn_call(fun, [this_arg | args], _this) do + invoke_fun(fun, args, this_arg) + end + + defp fn_apply(fun, [this_arg | rest], _this) do + args_array = List.first(rest) + + args = + case args_array do + {:obj, ref} -> + case Heap.get_obj(ref, []) do + {:qb_arr, arr} -> :array.to_list(arr) + list when is_list(list) -> list + _ -> [] + end + + {:qb_arr, arr} -> + :array.to_list(arr) + + list when is_list(list) -> + list + + _ -> + [] + end + + invoke_fun(fun, args, this_arg) + end + + defp fn_bind(fun, [this_arg | bound_args], _this) do + orig_len = + case fun do + %Bytecode.Function{defined_arg_count: n} -> n + {:closure, _, %Bytecode.Function{defined_arg_count: n}} -> n + _ -> 0 + end + + orig_name = + case fun do + %Bytecode.Function{name: n} when is_binary(n) -> n + {:closure, _, %Bytecode.Function{name: n}} when is_binary(n) -> n + {:builtin, n, _} -> n + _ -> "" + end + + bound_len = max(0, orig_len - length(bound_args)) + bound_fn = fn args, _this2 -> invoke_fun(fun, bound_args ++ args, this_arg) end + {:bound, bound_len, {:builtin, "bound " <> orig_name, bound_fn}, fun, bound_args} + end + + defp invoke_fun(fun, args, this_arg) do + case fun do + %Bytecode.Function{} -> + Invocation.invoke_with_receiver(fun, args, this_arg) + + {:closure, _, %Bytecode.Function{}} -> + Invocation.invoke_with_receiver(fun, args, this_arg) + + other -> + Builtin.call(other, args, this_arg) + end + end +end diff --git a/lib/quickbeam/vm/runtime/global_numeric.ex b/lib/quickbeam/vm/runtime/global_numeric.ex new file mode 100644 index 000000000..d3848e9ba --- /dev/null +++ b/lib/quickbeam/vm/runtime/global_numeric.ex @@ -0,0 +1,112 @@ +defmodule QuickBEAM.VM.Runtime.GlobalNumeric do + @moduledoc "Global numeric functions: `parseInt`, `parseFloat`, `isNaN`, `isFinite`, and related utilities." + alias QuickBEAM.VM.Interpreter.Values + + @doc "Implements JavaScript `parseInt` semantics." + def parse_int([string, radix | _], _) when is_binary(string) and is_number(radix) do + base = trunc(radix) + string = String.trim_leading(string) + + if base == 0 or base == 10 do + parse_int([string], nil) + else + cond do + base == 16 -> + string = string |> String.replace_prefix("0x", "") |> String.replace_prefix("0X", "") + + case Integer.parse(string, 16) do + {n, _} -> n + :error -> :nan + end + + base in 2..36 -> + case Integer.parse(string, base) do + {n, _} -> n + :error -> :nan + end + + true -> + :nan + end + end + end + + def parse_int([string | _], _) when is_binary(string) do + string = String.trim_leading(string) + + if String.starts_with?(string, "0x") or String.starts_with?(string, "0X") do + case Integer.parse(binary_part(string, 2, byte_size(string) - 2), 16) do + {n, _} -> n + :error -> :nan + end + else + case Integer.parse(string) do + {n, _} -> n + :error -> :nan + end + end + end + + def parse_int([n | _], _) when is_number(n), do: trunc(n) + def parse_int(_, _), do: :nan + + @doc "Implements JavaScript `parseFloat` semantics." + def parse_float([string | _], _) when is_binary(string) do + string = String.trim(string) + + cond do + String.starts_with?(string, "Infinity") or String.starts_with?(string, "+Infinity") -> + :infinity + + String.starts_with?(string, "-Infinity") -> + :neg_infinity + + true -> + case Float.parse(string) do + {n, _} -> n + :error -> :nan + end + end + end + + def parse_float([n | _], _) when is_number(n), do: n * 1.0 + def parse_float(_, _), do: :nan + + @doc "Returns whether a VM number is JavaScript NaN." + def nan?([:nan | _], _), do: true + def nan?([:infinity | _], _), do: false + def nan?([:neg_infinity | _], _), do: false + def nan?([n | _], _) when is_number(n), do: false + + def nan?([string | _], _) when is_binary(string) do + case Float.parse(String.trim_leading(string)) do + {_, _} -> false + :error -> true + end + end + + def nan?([val | _], _) do + case Values.to_number(val) do + :nan -> true + n when is_number(n) -> false + _ -> true + end + end + + def nan?(_, _), do: true + + @doc "Returns whether a VM number is finite under JavaScript semantics." + def finite?([n | _], _) when is_number(n), do: true + def finite?([:infinity | _], _), do: false + def finite?([:neg_infinity | _], _), do: false + def finite?([:nan | _], _), do: false + + def finite?([val | _], _) do + case Values.to_number(val) do + n when is_number(n) -> true + _ -> false + end + end + + def finite?(_, _), do: false +end diff --git a/lib/quickbeam/vm/runtime/globals.ex b/lib/quickbeam/vm/runtime/globals.ex new file mode 100644 index 000000000..986832bff --- /dev/null +++ b/lib/quickbeam/vm/runtime/globals.ex @@ -0,0 +1,200 @@ +defmodule QuickBEAM.VM.Runtime.Globals do + @moduledoc "JS global scope: constructors, global functions, and the binding map." + + import QuickBEAM.VM.Builtin, only: [object: 1] + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Runtime + + alias QuickBEAM.VM.Runtime.WebAPIs + + alias QuickBEAM.VM.Runtime.{ + ArrayBuffer, + Boolean, + Console, + Errors, + GlobalNumeric, + JSON, + Math, + Object, + PromiseBuiltins, + Reflect, + Symbol, + TypedArray + } + + alias QuickBEAM.VM.Runtime.Date, as: JSDate + alias QuickBEAM.VM.Runtime.Constructors, as: ConstructorRegistry + alias QuickBEAM.VM.Runtime.Globals.{Constructors, Functions} + alias QuickBEAM.VM.Runtime.Map, as: JSMap + alias QuickBEAM.VM.Runtime.Set, as: JSSet + + @doc "Builds the runtime value represented by this module." + def build do + obj_proto = ensure_object_prototype() + obj_ctor = register("Object", &Constructors.object/2, prototype: obj_proto) + + # Set constructor on Object.prototype + {:obj, proto_ref} = obj_proto + proto_data = Heap.get_obj(proto_ref, %{}) + + if is_map(proto_data), + do: Heap.put_obj(proto_ref, Map.put(proto_data, "constructor", obj_ctor)) + + bindings() + |> Map.put("Object", obj_ctor) + |> Map.merge(typed_arrays()) + |> Map.merge(Errors.bindings()) + |> tap(&Heap.put_global_cache/1) + |> Map.merge(WebAPIs.bindings()) + |> tap(&Heap.put_global_cache/1) + end + + # ── Binding map ── + + defp bindings do + %{ + "Array" => + ( + ctor = register("Array", &Constructors.array/2) + proto = QuickBEAM.VM.Runtime.Array.prototype() + ConstructorRegistry.put_prototype(ctor, proto) + Heap.put_array_proto(proto) + ctor + ), + "String" => register("String", &Constructors.string/2, auto_proto: true), + "Number" => register("Number", &Constructors.number/2, auto_proto: true), + "BigInt" => register("BigInt", &Constructors.bigint/2), + "Boolean" => register("Boolean", Boolean.constructor(), auto_proto: true), + "Function" => + (fn -> + fun_ctor = + register("Function", &Constructors.function/2, + prototype: QuickBEAM.VM.Runtime.Function.prototype() + ) + + proto = Heap.get_ctor_statics(fun_ctor)["prototype"] + + if match?({:obj, _}, proto), + do: QuickBEAM.VM.ObjectModel.Put.put(proto, "constructor", fun_ctor) + + fun_ctor + end).(), + "RegExp" => register("RegExp", &Constructors.regexp/2, auto_proto: true), + "Date" => register("Date", &JSDate.constructor/2, module: JSDate, auto_proto: true), + "Promise" => + register("Promise", PromiseBuiltins.constructor(), + module: PromiseBuiltins, + prototype: PromiseBuiltins.prototype() + ), + "Symbol" => register("Symbol", Symbol.constructor(), module: Symbol), + "Map" => register("Map", JSMap.constructor(), auto_proto: true), + "Set" => register("Set", JSSet.constructor(), auto_proto: true), + "WeakMap" => register("WeakMap", JSMap.weak_constructor()), + "WeakSet" => register("WeakSet", JSSet.weak_constructor()), + "WeakRef" => register("WeakRef", fn _, _ -> Runtime.new_object() end), + "FinalizationRegistry" => + register("FinalizationRegistry", &Constructors.finalization_registry/2), + "DataView" => register("DataView", fn _, _ -> Runtime.new_object() end), + "ArrayBuffer" => + ( + ab_ctor = register("ArrayBuffer", &ArrayBuffer.constructor/2, auto_proto: true) + + Heap.put_ctor_static( + ab_ctor, + {:symbol, "Symbol.species"}, + {:accessor, {:builtin, "get [Symbol.species]", fn _, _ -> ab_ctor end}, nil} + ) + + ab_ctor + ), + "Proxy" => + (fn -> + ctor = register("Proxy", &Constructors.proxy/2) + + Heap.put_ctor_static( + ctor, + "revocable", + {:builtin, "revocable", + fn [target, handler | _], _ -> + proxy = Constructors.proxy([target, handler], nil) + + revoke_fn = + {:builtin, "revoke", + fn _, _ -> + :undefined + end} + + Heap.wrap(%{"proxy" => proxy, "revoke" => revoke_fn}) + end} + ) + + ctor + end).(), + "Math" => Math.object(), + "JSON" => JSON.object(), + "Reflect" => Reflect.object(), + "console" => Console.object(), + "parseInt" => builtin("parseInt", &GlobalNumeric.parse_int/2), + "parseFloat" => builtin("parseFloat", &GlobalNumeric.parse_float/2), + "isNaN" => builtin("isNaN", &GlobalNumeric.nan?/2), + "isFinite" => builtin("isFinite", &GlobalNumeric.finite?/2), + "eval" => builtin("eval", &Functions.js_eval/2), + "require" => builtin("require", &Functions.js_require/2), + "structuredClone" => + builtin("structuredClone", fn + [val | _], _ -> QuickBEAM.VM.Runtime.StructuredClone.clone(val) + [], _ -> nil + end), + "queueMicrotask" => builtin("queueMicrotask", &Functions.queue_microtask/2), + "gc" => builtin("gc", fn _, _ -> :undefined end), + "os" => Heap.wrap(%{"platform" => "elixir"}), + "qjs" => + object do + method "getStringKind" do + s = hd(args) + if is_binary(s) and byte_size(s) > 256, do: 1, else: 0 + end + end, + "globalThis" => Runtime.new_object(), + "NaN" => :nan, + "Infinity" => :infinity, + "undefined" => :undefined + } + end + + # ── Registration helpers ── + + defp builtin(name, fun), do: {:builtin, name, fun} + + defp register(name, constructor, opts \\ []) do + ConstructorRegistry.register(name, constructor, opts) + end + + defp ensure_object_prototype do + case Heap.get_object_prototype() do + nil -> Object.build_prototype() + existing -> existing + end + end + + defp typed_arrays do + ta_base = + {:builtin, "TypedArray", + fn _args, _this -> + throw( + {:js_throw, Heap.make_error("Abstract class TypedArray cannot be called", "TypeError")} + ) + end} + + ta_base_ref = make_ref() + Heap.put_obj(ta_base_ref, %{"__proto__" => nil}) + Heap.put_ctor_static(ta_base, "prototype", {:obj, ta_base_ref}) + + for {name, type} <- TypedArray.types(), into: %{} do + ctor = register(name, TypedArray.constructor(type), auto_proto: true) + Heap.put_ctor_static(ctor, "__proto__", ta_base) + {name, ctor} + end + end +end diff --git a/lib/quickbeam/vm/runtime/globals/constructors.ex b/lib/quickbeam/vm/runtime/globals/constructors.ex new file mode 100644 index 000000000..334be9736 --- /dev/null +++ b/lib/quickbeam/vm/runtime/globals/constructors.ex @@ -0,0 +1,178 @@ +defmodule QuickBEAM.VM.Runtime.Globals.Constructors do + @moduledoc "Global constructor built-ins: `Object`, `Array`, `String`, `Boolean`, and other wrapper constructors." + + import QuickBEAM.VM.Heap.Keys + import QuickBEAM.VM.Builtin, only: [arg: 3, object: 1] + + alias QuickBEAM.VM.{Bytecode, Heap} + alias QuickBEAM.VM.Interpreter + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.Runtime + + @doc "Helper for global constructor built-ins: `object`, `array`, `string`, `boolean`, and other wrapper constructors." + def object([arg | _], _) do + case arg do + {:symbol, _, _} = symbol -> + ref = make_ref() + Heap.put_obj(ref, %{"__wrapped_symbol__" => symbol}) + {:obj, ref} + + {:obj, _} = obj -> + obj + + value when is_binary(value) -> + ref = make_ref() + Heap.put_obj(ref, %{"__wrapped_string__" => value}) + {:obj, ref} + + value when is_number(value) -> + ref = make_ref() + Heap.put_obj(ref, %{"__wrapped_number__" => value}) + {:obj, ref} + + value when is_boolean(value) -> + ref = make_ref() + Heap.put_obj(ref, %{"__wrapped_boolean__" => value}) + {:obj, ref} + + {:bigint, _} = value -> + ref = make_ref() + Heap.put_obj(ref, %{"__wrapped_bigint__" => value}) + {:obj, ref} + + _ -> + Runtime.new_object() + end + end + + def object(_, _), do: Runtime.new_object() + + @doc "Helper for global constructor built-ins: `object`, `array`, `string`, `boolean`, and other wrapper constructors." + def array(args, _) do + list = + case args do + [n] when is_integer(n) and n >= 0 -> List.duplicate(:undefined, n) + _ -> args + end + + Heap.wrap(list) + end + + @doc "Helper for global constructor built-ins: `object`, `array`, `string`, `boolean`, and other wrapper constructors." + def string(args, {:obj, _} = this) do + val = args |> arg(0, "") |> Runtime.stringify() + QuickBEAM.VM.ObjectModel.Put.put(this, "__wrapped_string__", val) + this + end + + def string(args, _), do: args |> arg(0, "") |> Runtime.stringify() + + @doc "Helper for global constructor built-ins: `object`, `array`, `string`, `boolean`, and other wrapper constructors." + def number(args, {:obj, _} = this) do + val = args |> arg(0, 0) |> Runtime.to_number() + QuickBEAM.VM.ObjectModel.Put.put(this, "__wrapped_number__", val) + this + end + + def number(args, _), do: args |> arg(0, 0) |> Runtime.to_number() + + @doc "Helper for global constructor built-ins: `object`, `array`, `string`, `boolean`, and other wrapper constructors." + def function(args, _) do + ctx = Heap.get_ctx() + + if ctx && ctx.runtime_pid do + {params, body} = + case Enum.reverse(args) do + [body | param_parts] -> + {Enum.join(Enum.reverse(param_parts), ","), body} + + [] -> + {"", ""} + end + + code = "(function(" <> params <> "){" <> body <> "})" + + case QuickBEAM.Runtime.compile(ctx.runtime_pid, code) do + {:ok, bytecode} -> + case Bytecode.decode(bytecode) do + {:ok, parsed} -> + case Interpreter.eval( + parsed.value, + [], + %{gas: Runtime.gas_budget(), runtime_pid: ctx.runtime_pid}, + parsed.atoms + ) do + {:ok, value} -> value + _ -> JSThrow.syntax_error!("Invalid function") + end + + _ -> + JSThrow.syntax_error!("Invalid function") + end + + _ -> + JSThrow.syntax_error!("Invalid function") + end + else + JSThrow.error!("Function constructor requires runtime") + end + end + + @doc "Helper for global constructor built-ins: `object`, `array`, `string`, `boolean`, and other wrapper constructors." + def bigint([n | _], _) when is_integer(n), do: {:bigint, n} + def bigint([{:bigint, n} | _], _), do: {:bigint, n} + + def bigint([string | _], _) when is_binary(string) do + case Integer.parse(string) do + {n, ""} -> {:bigint, n} + _ -> JSThrow.syntax_error!("Cannot convert to BigInt") + end + end + + def bigint(_, _) do + JSThrow.type_error!("Cannot convert to BigInt") + end + + @doc "Helper for global constructor built-ins: `object`, `array`, `string`, `boolean`, and other wrapper constructors." + def regexp([], this), do: regexp(["" | []], this) + + def regexp([pattern | rest], _) do + flags = + case rest do + [flag | _] when is_binary(flag) -> flag + _ -> "" + end + + source = + case pattern do + {:regexp, value, _} -> value + value when is_binary(value) -> value + _ -> "" + end + + {:regexp, source, flags} + end + + @doc "Helper for global constructor built-ins: `object`, `array`, `string`, `boolean`, and other wrapper constructors." + def proxy([target, handler | _], _) do + Heap.wrap(%{proxy_target() => target, proxy_handler() => handler}) + end + + def proxy(_, _), do: Runtime.new_object() + + @doc "Helper for global constructor built-ins: `object`, `array`, `string`, `boolean`, and other wrapper constructors." + def finalization_registry([_callback | _], _), do: finalization_registry_object() + def finalization_registry(_, _), do: finalization_registry_object() + + defp finalization_registry_object do + object do + method "register" do + :undefined + end + + method "unregister" do + :undefined + end + end + end +end diff --git a/lib/quickbeam/vm/runtime/globals/functions.ex b/lib/quickbeam/vm/runtime/globals/functions.ex new file mode 100644 index 000000000..be8cab3d3 --- /dev/null +++ b/lib/quickbeam/vm/runtime/globals/functions.ex @@ -0,0 +1,54 @@ +defmodule QuickBEAM.VM.Runtime.Globals.Functions do + @moduledoc "Implementations for global JavaScript functions such as `eval`, `require`, and `queueMicrotask`." + + alias QuickBEAM.VM.{Bytecode, Heap} + alias QuickBEAM.VM.Interpreter + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.Runtime + + @doc "Implements global `eval` for source strings by compiling and evaluating them in the current runtime." + def js_eval([code | _], _) when is_binary(code) do + ctx = Heap.get_ctx() + + with %{runtime_pid: pid} when pid != nil <- ctx, + {:ok, bytecode} <- QuickBEAM.Runtime.compile(pid, code), + {:ok, parsed} <- Bytecode.decode(bytecode), + {:ok, value} <- + Interpreter.eval( + parsed.value, + [], + %{gas: Runtime.gas_budget(), runtime_pid: pid}, + parsed.atoms + ) do + value + else + %{runtime_pid: nil} -> :undefined + nil -> :undefined + {:error, %{message: msg}} -> JSThrow.syntax_error!(msg) + {:error, msg} when is_binary(msg) -> JSThrow.syntax_error!(msg) + _ -> :undefined + end + end + + def js_eval(_, _), do: :undefined + + @doc "Implements the CommonJS-like `require` global backed by registered VM modules." + def js_require([name | _], _) do + case Heap.get_module(name) do + nil -> JSThrow.error!("Cannot find module '#{name}'") + exports -> exports + end + end + + @doc "Implements `queueMicrotask` by enqueuing a callback in the VM microtask queue." + def queue_microtask([callback | _], _) do + unless QuickBEAM.VM.Builtin.callable?(callback) do + JSThrow.type_error!( + "Failed to execute 'queueMicrotask': The callback provided as parameter 1 is not a function." + ) + end + + Heap.enqueue_microtask({:resolve, nil, callback, :undefined}) + :undefined + end +end diff --git a/lib/quickbeam/vm/runtime/json.ex b/lib/quickbeam/vm/runtime/json.ex new file mode 100644 index 000000000..aeeae043b --- /dev/null +++ b/lib/quickbeam/vm/runtime/json.ex @@ -0,0 +1,212 @@ +defmodule QuickBEAM.VM.Runtime.JSON do + @moduledoc "JSON.parse and JSON.stringify." + + use QuickBEAM.VM.Builtin + + import QuickBEAM.VM.Heap.Keys + + alias QuickBEAM.VM.Bytecode + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.ObjectModel.Get + alias QuickBEAM.VM.Runtime + + js_object "JSON" do + method "parse" do + parse(args) + end + + method "stringify" do + stringify(args) + end + end + + defp parse([s | _]) when is_binary(s) do + decoded = + try do + :json.decode(s) + rescue + _ -> JSThrow.syntax_error!("Unexpected end of JSON input") + catch + _, _ -> JSThrow.syntax_error!("Unexpected end of JSON input") + end + + to_js_root(decoded, s) + end + + defp parse(_), + do: JSThrow.syntax_error!("Unexpected end of JSON input") + + defp to_js_root(val, json_str) when is_map(val) do + keys = + case Jason.decode(json_str, objects: :ordered_objects) do + {:ok, %Jason.OrderedObject{values: pairs}} -> + pairs |> Enum.map(&elem(&1, 0)) |> Enum.reverse() + + _ -> + Map.keys(val) |> Enum.reverse() + end + + to_js(val, keys) + end + + defp to_js_root(val, _) when is_list(val), do: Enum.map(val, &to_js/1) + defp to_js_root(val, _), do: to_js(val) + + defp to_js(nil), do: nil + defp to_js(:null), do: nil + defp to_js(val) when is_map(val), do: to_js(val, nil) + defp to_js(val) when is_list(val), do: Enum.map(val, &to_js/1) + defp to_js(val), do: val + + defp to_js(val, key_order) when is_map(val) do + ref = make_ref() + map = Map.new(val, fn {k, v} -> {k, to_js(v, nil)} end) + order = key_order || Map.keys(val) |> Enum.reverse() + Heap.put_obj(ref, Map.put(map, key_order(), order)) + {:obj, ref} + end + + defp to_js(val, _) when is_list(val), do: Enum.map(val, &to_js/1) + defp to_js(val, _), do: to_js(val) + + defp stringify([val | rest]) do + if val == :undefined do + :undefined + else + replacer = Enum.at(rest, 0) + space = Enum.at(rest, 1) + + try do + result = to_json(val) + if result == :undefined, do: :undefined, else: encode(result, replacer, space) + rescue + _ -> :undefined + end + end + end + + defp stringify([]), do: :undefined + + defp encode(result, replacer, space) do + result = apply_replacer(result, replacer) + elixir_val = to_elixir(result) + + opts = + case space do + n when is_integer(n) and n > 0 -> [pretty: [indent: String.duplicate(" ", min(n, 10))]] + s when is_binary(s) and s != "" -> [pretty: [indent: String.slice(s, 0, 10)]] + _ -> [] + end + + case Jason.encode(elixir_val, opts) do + {:ok, json} -> json + _ -> :undefined + end + end + + defp to_elixir({:ordered_map, pairs}) do + Jason.OrderedObject.new(Enum.map(pairs, fn {k, v} -> {k, to_elixir(v)} end)) + end + + defp to_elixir(list) when is_list(list), do: Enum.map(list, &to_elixir/1) + defp to_elixir(:null), do: nil + defp to_elixir(val), do: val + + defp apply_replacer({:ordered_map, pairs}, {:obj, ref}) do + allowed = Heap.to_list({:obj, ref}) + + if allowed != [] and Enum.all?(allowed, &is_binary/1) do + {:ordered_map, Enum.filter(pairs, fn {k, _} -> k in allowed end)} + else + {:ordered_map, pairs} + end + end + + defp apply_replacer({:ordered_map, pairs}, replacer) + when replacer != nil and replacer != :undefined do + filtered = + Enum.reduce(pairs, [], fn {k, v}, acc -> + result = Runtime.call_callback(replacer, [k, v]) + if result == :undefined, do: acc, else: [{k, result} | acc] + end) + + {:ordered_map, Enum.reverse(filtered)} + end + + defp apply_replacer(result, _), do: result + + defp to_json({:obj, ref} = obj) do + case Heap.get_obj(ref) do + nil -> + %{} + + {:qb_arr, arr} -> + :array.to_list(arr) |> Enum.map(&to_json/1) + + list when is_list(list) -> + Enum.map(list, &to_json/1) + + map when is_map(map) -> + case Map.get(map, "toJSON") do + fun when fun != nil and fun != :undefined -> + result = Runtime.call_callback(fun, []) + to_json(result) + + _ -> + order = + case Map.get(map, key_order()) do + {:qb_arr, arr} -> :array.to_list(arr) + list when is_list(list) -> Enum.reverse(list) + _ -> nil + end + + entries = + map + |> Map.drop([key_order()]) + |> Enum.reject(fn {k, v} -> v == :undefined or internal?(k) end) + + entries = + if order do + Enum.sort_by(entries, fn {k, _} -> + case Enum.find_index(order, &(&1 == k)) do + nil -> length(order) + idx -> idx + end + end) + else + entries + end + + pairs = + entries + |> Enum.map(fn {k, v} -> {to_string(k), to_json(resolve_value(v, obj))} end) + |> Enum.reject(fn {_, v} -> v == :undefined end) + + {:ordered_map, pairs} + end + end + end + + defp to_json(nil), do: :null + defp to_json(:undefined), do: :null + defp to_json({:closure, _, _}), do: :undefined + defp to_json(%Bytecode.Function{}), do: :undefined + defp to_json({:builtin, _, _}), do: :undefined + defp to_json({:bound, _, _, _, _}), do: :undefined + defp to_json(:nan), do: :null + defp to_json(:infinity), do: :null + defp to_json(list) when is_list(list), do: Enum.map(list, &to_json/1) + defp to_json({:accessor, _, _}), do: :undefined + defp to_json(val), do: val + + defp resolve_value({:accessor, getter, _}, obj) when getter != nil do + Get.call_getter(getter, obj) + rescue + _ -> :undefined + catch + _, _ -> :undefined + end + + defp resolve_value(val, _obj), do: val +end diff --git a/lib/quickbeam/vm/runtime/map.ex b/lib/quickbeam/vm/runtime/map.ex new file mode 100644 index 000000000..48a3209a1 --- /dev/null +++ b/lib/quickbeam/vm/runtime/map.ex @@ -0,0 +1,234 @@ +defmodule QuickBEAM.VM.Runtime.Map do + @moduledoc "JS `Map` and `WeakMap` built-ins: constructor, `get`/`set`/`has`/`delete`, and iteration." + + import QuickBEAM.VM.Heap.Keys + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.Runtime + + @doc "Builds the JavaScript constructor object for this runtime builtin." + def constructor do + fn args, _this -> + ref = make_ref() + + entries = + case args do + [list] when is_list(list) -> + Map.new(list, &entry_to_kv/1) + + [{:obj, r}] -> + stored = Heap.get_obj(r, []) + + if is_list(stored) or match?({:qb_arr, _}, stored) do + Heap.to_list({:obj, r}) |> Map.new(&entry_to_kv/1) + else + %{} + end + + _ -> + %{} + end + + Heap.put_obj(ref, %{ + map_data() => entries, + "size" => map_size(entries) + }) + + {:obj, ref} + end + end + + @doc "Helper for js `map` and `weakmap` built-ins: constructor, `get`/`set`/`has`/`delete`, and iteration." + def weak_constructor do + fn args, _this -> + ref = make_ref() + + init = + case args do + [{:obj, _} = entries | _] -> + Heap.to_list(entries) + |> Enum.reduce(%{}, fn + {:obj, eref}, acc -> + case Heap.get_obj(eref, []) do + [k, v | _] -> + validate_weak_key!(k, "WeakMap") + Map.put(acc, k, v) + + _ -> + acc + end + + _, acc -> + acc + end) + + _ -> + %{} + end + + Heap.put_obj(ref, %{map_data() => init, "size" => map_size(init), :weak => true}) + {:obj, ref} + end + end + + @doc "Returns a prototype property value for the given JavaScript property key." + def proto_property("get"), do: {:builtin, "get", &get/2} + def proto_property("set"), do: {:builtin, "set", &set/2} + def proto_property("has"), do: {:builtin, "has", &has/2} + def proto_property("delete"), do: {:builtin, "delete", &delete/2} + def proto_property("clear"), do: {:builtin, "clear", &clear/2} + def proto_property("keys"), do: {:builtin, "keys", &keys/2} + def proto_property("values"), do: {:builtin, "values", &values/2} + def proto_property("entries"), do: {:builtin, "entries", &entries/2} + def proto_property("forEach"), do: {:builtin, "forEach", &for_each/2} + + def proto_property("size") do + {:builtin, "size", + fn _, {:obj, ref} -> + Heap.get_obj(ref, %{}) + |> Map.get(map_data(), %{}) + |> map_size() + end} + end + + def proto_property(_), do: :undefined + + defp validate_weak_key!({:obj, _}, _), do: :ok + defp validate_weak_key!({:symbol, _, _}, _), do: :ok + + defp validate_weak_key!(_, kind) do + JSThrow.type_error!("invalid value used as #{kind} key") + end + + defp normalize_key(k) when is_float(k) and k == trunc(k), do: trunc(k) + defp normalize_key(k), do: k + + defp get([key | _], {:obj, ref}) do + data = Heap.get_obj(ref, %{}) |> Map.get(map_data(), %{}) + Map.get(data, normalize_key(key), :undefined) + end + + defp set([key, val | _], {:obj, ref}) do + obj = Heap.get_obj(ref, %{}) + if Map.get(obj, :weak), do: validate_weak_key!(key, "WeakMap") + key = normalize_key(key) + data = Map.get(obj, map_data(), %{}) + order = Map.get(obj, key_order(), []) + order = if Map.has_key?(data, key), do: order, else: [key | order] + new_data = Map.put(data, key, val) + + Heap.put_obj( + ref, + Map.merge(obj, %{ + map_data() => new_data, + "size" => map_size(new_data), + key_order() => order + }) + ) + + {:obj, ref} + end + + defp has([key | _], {:obj, ref}) do + data = Heap.get_obj(ref, %{}) |> Map.get(map_data(), %{}) + Map.has_key?(data, normalize_key(key)) + end + + defp delete([key | _], {:obj, ref}) do + key = normalize_key(key) + obj = Heap.get_obj(ref, %{}) + data = Map.get(obj, map_data(), %{}) + new_data = Map.delete(data, key) + order = Map.get(obj, key_order(), []) |> List.delete(key) + + Heap.put_obj( + ref, + Map.merge(obj, %{ + map_data() => new_data, + "size" => map_size(new_data), + key_order() => order + }) + ) + + true + end + + defp clear(_, {:obj, ref}) do + obj = Heap.get_obj(ref, %{}) + Heap.put_obj(ref, %{obj | map_data() => %{}, "size" => 0}) + :undefined + end + + defp keys(_, {:obj, ref}) do + order = Heap.get_obj(ref, %{}) |> Map.get(key_order(), []) |> Enum.reverse() + Heap.wrap(order) + end + + defp values(_, {:obj, ref}) do + obj = Heap.get_obj(ref, %{}) + data = Map.get(obj, map_data(), %{}) + order = Map.get(obj, key_order(), []) |> Enum.reverse() + Heap.wrap(Enum.map(order, &Map.get(data, &1))) + end + + defp entries(_, {:obj, ref}) do + obj = Heap.get_obj(ref, %{}) + data = Map.get(obj, map_data(), %{}) + order = Map.get(obj, key_order(), []) |> Enum.reverse() + items = Enum.map(order, fn key -> Heap.wrap([key, Map.get(data, key)]) end) + Heap.wrap(items) + end + + defp entry_to_kv([k, v | _]), do: {k, v} + defp entry_to_kv([k]), do: {k, :undefined} + + defp entry_to_kv({:obj, eref}) do + case Heap.get_obj(eref, []) do + [k, v | _] -> + {k, v} + + [k] -> + {k, :undefined} + + {:qb_arr, arr} -> + list = :array.to_list(arr) + + case list do + [k, v | _] -> {k, v} + [k] -> {k, :undefined} + _ -> {nil, nil} + end + + _ -> + {nil, nil} + end + end + + defp entry_to_kv({:qb_arr, arr}) do + list = :array.to_list(arr) + + case list do + [k, v | _] -> {k, v} + [k] -> {k, :undefined} + _ -> {nil, nil} + end + end + + defp entry_to_kv(_), do: {nil, nil} + + defp for_each([cb | _], {:obj, ref}) do + obj = Heap.get_obj(ref, %{}) + data = Map.get(obj, map_data(), %{}) + order = Map.get(obj, key_order(), []) |> Enum.reverse() + + Enum.each(order, fn key -> + case Map.fetch(data, key) do + {:ok, value} -> Runtime.call_callback(cb, [value, key, {:obj, ref}]) + :error -> :ok + end + end) + + :undefined + end +end diff --git a/lib/quickbeam/vm/runtime/math.ex b/lib/quickbeam/vm/runtime/math.ex new file mode 100644 index 000000000..0a5a3a8a6 --- /dev/null +++ b/lib/quickbeam/vm/runtime/math.ex @@ -0,0 +1,307 @@ +defmodule QuickBEAM.VM.Runtime.Math do + @moduledoc "JS `Math` object: all standard methods (`floor`, `ceil`, `sin`, `random`, etc.) and numeric constants." + + use QuickBEAM.VM.Builtin + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Interpreter.Values + alias QuickBEAM.VM.Runtime + + js_object "Math" do + method "floor" do + case Runtime.to_float(hd(args)) do + :infinity -> :infinity + :neg_infinity -> :neg_infinity + :nan -> :nan + n -> floor(n) + end + end + + method "ceil" do + case Runtime.to_float(hd(args)) do + :infinity -> :infinity + :neg_infinity -> :neg_infinity + :nan -> :nan + n -> ceil(n) + end + end + + method "round" do + case Runtime.to_float(hd(args)) do + :infinity -> :infinity + :neg_infinity -> :neg_infinity + :nan -> :nan + n -> round(n) + end + end + + method "abs" do + case hd(args) do + :infinity -> :infinity + :neg_infinity -> :infinity + :nan -> :nan + n when is_number(n) -> abs(n) + _ -> :nan + end + end + + method "max" do + case args do + [] -> :neg_infinity + _ -> Enum.max(args) + end + end + + method "min" do + case args do + [] -> :infinity + _ -> Enum.min(args) + end + end + + method "sqrt" do + :math.sqrt(Runtime.to_float(hd(args))) + end + + method "pow" do + [a, b | _] = args + :math.pow(Runtime.to_float(a), Runtime.to_float(b)) + end + + method "random" do + :rand.uniform() + end + + method "trunc" do + trunc(Runtime.to_float(hd(args))) + end + + method "sign" do + a = hd(args) + + cond do + is_number(a) and a > 0 -> 1 + is_number(a) and a < 0 -> -1 + is_number(a) -> a + true -> :nan + end + end + + method "log" do + :math.log(Runtime.to_float(hd(args))) + end + + method "log2" do + :math.log2(Runtime.to_float(hd(args))) + end + + method "log10" do + :math.log10(Runtime.to_float(hd(args))) + end + + method "sin" do + :math.sin(Runtime.to_float(hd(args))) + end + + method "cos" do + :math.cos(Runtime.to_float(hd(args))) + end + + method "tan" do + :math.tan(Runtime.to_float(hd(args))) + end + + method "clz32" do + n = Values.to_uint32(hd(args)) + if n == 0, do: 32, else: 31 - trunc(:math.log2(n)) + end + + method "fround" do + f = Runtime.to_float(hd(args)) + <> = <> + f32 * 1.0 + end + + method "imul" do + [a, b | _] = args + + Values.to_int32( + Values.to_int32(a) * + Values.to_int32(b) + ) + end + + method "atan2" do + [a, b | _] = args + :math.atan2(Runtime.to_float(a), Runtime.to_float(b)) + end + + method "asin" do + :math.asin(Runtime.to_float(hd(args))) + end + + method "acos" do + :math.acos(Runtime.to_float(hd(args))) + end + + method "atan" do + :math.atan(Runtime.to_float(hd(args))) + end + + method "exp" do + :math.exp(Runtime.to_float(hd(args))) + end + + method "cbrt" do + f = Runtime.to_float(hd(args)) + sign = if f < 0, do: -1, else: 1 + sign * :math.pow(abs(f), 1.0 / 3.0) + end + + method "log1p" do + :math.log(1 + Runtime.to_float(hd(args))) + end + + method "expm1" do + :math.exp(Runtime.to_float(hd(args))) - 1 + end + + method "cosh" do + :math.cosh(Runtime.to_float(hd(args))) + end + + method "sinh" do + :math.sinh(Runtime.to_float(hd(args))) + end + + method "tanh" do + :math.tanh(Runtime.to_float(hd(args))) + end + + method "acosh" do + :math.acosh(Runtime.to_float(hd(args))) + end + + method "asinh" do + :math.asinh(Runtime.to_float(hd(args))) + end + + method "atanh" do + :math.atanh(Runtime.to_float(hd(args))) + end + + method "sumPrecise" do + list = + case hd(args) do + {:obj, ref} -> + data = Heap.get_obj(ref, []) + + case data do + {:qb_arr, arr} -> :array.to_list(arr) + l when is_list(l) -> l + _ -> [] + end + + {:qb_arr, arr} -> + :array.to_list(arr) + + l when is_list(l) -> + l + + _ -> + [] + end + + shewchuk_sum(list) + end + + method "hypot" do + sum = Enum.reduce(args, 0.0, fn a, acc -> acc + :math.pow(Runtime.to_float(a), 2) end) + :math.sqrt(sum) + end + + val("PI", :math.pi()) + val("E", :math.exp(1)) + val("LN2", :math.log(2)) + val("LN10", :math.log(10)) + val("LOG2E", :math.log2(:math.exp(1))) + val("LOG10E", :math.log10(:math.exp(1))) + val("SQRT2", :math.sqrt(2)) + val("SQRT1_2", :math.sqrt(2) / 2) + val("MAX_SAFE_INTEGER", 9_007_199_254_740_991) + val("MIN_SAFE_INTEGER", -9_007_199_254_740_991) + end + + defp shewchuk_sum(list) do + partials = + Enum.reduce(list, [], fn v, partials -> + x = Runtime.to_float(v) + grow(partials, x, []) + end) + + case partials do + [] -> + 0.0 + + [x] -> + x + + _ -> + partials = Enum.reverse(partials) + finalize_partials(partials) + end + end + + defp grow([], x, new_partials), do: if(x != 0.0, do: new_partials ++ [x], else: new_partials) + + defp grow([p | rest], x, new_partials) do + {hi, lo} = two_sum(x, p) + new_partials = if lo != 0.0, do: new_partials ++ [lo], else: new_partials + grow(rest, hi, new_partials) + end + + # CPython fsum-style finalization: detect halfway cases where + # remaining partials should break the tie + defp finalize_partials([]), do: 0.0 + defp finalize_partials([x]), do: x + + defp finalize_partials(partials) do + [hi | rest] = partials + {hi, lo, remaining} = fold_top(hi, rest) + + cond do + lo == 0.0 -> + hi + + remaining == [] -> + hi + lo + + true -> + [next | _] = remaining + # lo is the rounding error. If remaining partials have the same sign + # as lo, the true value is farther from hi than lo suggests — round away + if (lo > 0 and next > 0) or (lo < 0 and next < 0) do + # Adjust lo to break tie in favor of rounding away from hi + nudged = lo + lo + result = hi + nudged + if result == hi + lo, do: hi + lo, else: result + else + hi + lo + end + end + end + + defp fold_top(hi, []), do: {hi, 0.0, []} + + defp fold_top(hi, [lo | rest]) do + {s, t} = two_sum(hi, lo) + if t == 0.0, do: fold_top(s, rest), else: {s, t, rest} + end + + defp two_sum(a, b) do + s = a + b + v = s - a + t = a - (s - v) + (b - v) + {s, t} + end +end diff --git a/lib/quickbeam/vm/runtime/number.ex b/lib/quickbeam/vm/runtime/number.ex new file mode 100644 index 000000000..3f5eb0847 --- /dev/null +++ b/lib/quickbeam/vm/runtime/number.ex @@ -0,0 +1,300 @@ +defmodule QuickBEAM.VM.Runtime.Number do + @moduledoc "JS `Number` built-in: prototype methods (`toFixed`, `toString`, etc.) and static properties (`MAX_SAFE_INTEGER`, etc.)." + + use QuickBEAM.VM.Builtin + + alias QuickBEAM.VM.Runtime + alias QuickBEAM.VM.Runtime.GlobalNumeric + + # ── Number.prototype ── + + proto "toString" do + to_string_with_radix(this, args) + end + + proto "toFixed" do + to_fixed(this, args) + end + + proto "valueOf" do + this + end + + proto "toExponential" do + to_exponential(this, args) + end + + proto "toPrecision" do + to_precision(this, args) + end + + # ── Number static ── + + static "isNaN" do + hd(args) == :nan + end + + static "isFinite" do + is_number(hd(args)) + end + + static "isInteger" do + is_integer(hd(args)) or (is_float(hd(args)) and hd(args) == Float.floor(hd(args))) + end + + static "parseInt" do + GlobalNumeric.parse_int(args, nil) + end + + static "parseFloat" do + GlobalNumeric.parse_float(args, nil) + end + + static_val("NaN", :nan) + static_val("POSITIVE_INFINITY", :infinity) + static_val("NEGATIVE_INFINITY", :neg_infinity) + static_val("MAX_SAFE_INTEGER", 9_007_199_254_740_991) + static_val("MIN_SAFE_INTEGER", -9_007_199_254_740_991) + static_val("EPSILON", 2.220446049250313e-16) + # credo:disable-for-next-line Credo.Check.Readability.LargeNumbers + static_val("MAX_VALUE", 1.7976931348623157e+308) + static_val("MIN_VALUE", 5.0e-324) + + # ── toString(radix) ── + + defp to_string_with_radix(n, [radix | _]) when is_number(n) do + r = Runtime.to_int(radix) + + cond do + r == 10 -> + Runtime.stringify(n) + + r >= 2 and r <= 36 and n == trunc(n) -> + Integer.to_string(trunc(n), r) |> String.downcase() + + r >= 2 and r <= 36 -> + format_float_with_runtime(n * 1.0, r) || float_to_radix(n * 1.0, r) + + true -> + Runtime.stringify(n) + end + end + + defp to_string_with_radix(n, _), do: Runtime.stringify(n) + + defp format_float_with_runtime(n, radix) do + case QuickBEAM.VM.Heap.get_ctx() do + %{runtime_pid: runtime_pid} when runtime_pid != nil -> + literal = :erlang.float_to_binary(n, [:short]) + + case QuickBEAM.Runtime.eval(runtime_pid, "(#{literal}).toString(#{radix})") do + {:ok, value} when is_binary(value) -> value + _ -> nil + end + + _ -> + nil + end + end + + defp float_to_radix(n, radix) do + {sign, n} = if n < 0, do: {"-", -n}, else: {"", n} + int_part = trunc(n) + frac_part = n - int_part + + int_str = + if int_part == 0, do: "0", else: Integer.to_string(int_part, radix) |> String.downcase() + + if frac_part == 0.0 do + sign <> int_str + else + precision = ceil(53 * :math.log(2) / :math.log(radix)) + digits = frac_digits_list(frac_part, radix, precision + 3) + digits = round_and_trim(digits, precision, radix, frac_part) + chars = Enum.map(digits, &String.at("0123456789abcdefghijklmnopqrstuvwxyz", &1)) + sign <> int_str <> "." <> Enum.join(chars) + end + end + + defp frac_digits_list(_frac, _radix, 0), do: [] + + defp frac_digits_list(frac, radix, remaining) do + prod = frac * radix + digit = trunc(prod) + rest = prod - digit + + if rest == 0.0 do + [digit] + else + [digit | frac_digits_list(rest, radix, remaining - 1)] + end + end + + defp round_and_trim(digits, precision, radix, original_frac) do + truncated = Enum.take(digits, precision) |> trim_trailing_zeros() + rounded = round_radix_digits(digits, precision, radix) |> trim_trailing_zeros() + + if truncated == rounded do + truncated + else + trunc_rt = digits_to_float_precise(truncated, radix) + round_rt = digits_to_float_precise(rounded, radix) + + trunc_exact = trunc_rt == original_frac + round_exact = round_rt == original_frac + + cond do + trunc_exact and not round_exact -> + truncated + + round_exact and not trunc_exact -> + rounded + + true -> + trunc_err = abs(trunc_rt - original_frac) + round_err = abs(round_rt - original_frac) + if round_err < trunc_err, do: rounded, else: truncated + end + end + end + + defp digits_to_float_precise(digits, radix) do + {num, denom} = + Enum.reduce(Enum.with_index(digits), {0, 1}, fn {d, i}, {n, _} -> + power = round(:math.pow(radix, i + 1)) + {n * radix + d, power} + end) + + num / denom + end + + defp round_radix_digits(digits, precision, _radix) when length(digits) <= precision do + digits + end + + defp round_radix_digits(digits, precision, radix) do + {keep, tail} = Enum.split(digits, precision) + + should_round_up = + case tail do + [d | _] when d >= div(radix, 2) + 1 -> + true + + [d | rest] when d == div(radix, 2) -> + Enum.any?(rest, &(&1 > 0)) or rem(List.last(keep, 0), 2) == 1 + + _ -> + false + end + + if should_round_up do + propagate_carry(keep, radix) + else + keep + end + end + + defp propagate_carry(digits, radix) do + {result, carry} = + digits + |> Enum.reverse() + |> Enum.map_reduce(1, fn d, carry -> + sum = d + carry + {rem(sum, radix), div(sum, radix)} + end) + + if carry > 0, do: [carry | result], else: result + end + + defp trim_trailing_zeros(digits) do + digits + |> Enum.reverse() + |> Enum.drop_while(&(&1 == 0)) + |> Enum.reverse() + end + + # ── toFixed(digits) ── + + defp to_fixed(:nan, _), do: "NaN" + defp to_fixed(:infinity, _), do: "Infinity" + defp to_fixed(:neg_infinity, _), do: "-Infinity" + + defp to_fixed(n, [digits | _]) when is_number(n) do + :erlang.float_to_binary(n * 1.0, decimals: max(0, Runtime.to_int(digits))) + end + + defp to_fixed(n, _), do: Runtime.stringify(n) + + # ── toExponential(digits) ── + + defp to_exponential(n, [digits | _]) when is_number(n) do + d = Runtime.to_int(digits) + f = js_round_significant(abs(n * 1.0), d + 1) + sign = if n < 0, do: "-", else: "" + sign <> (:erlang.float_to_binary(f, [{:scientific, d}]) |> strip_exponent_zeros()) + end + + defp to_exponential(n, _), do: Runtime.stringify(n) + + defp strip_exponent_zeros(s) do + case String.split(s, "e") do + [mantissa, exp_str] -> mantissa <> "e" <> format_exponent(String.to_integer(exp_str)) + _ -> s + end + end + + # ── toPrecision(precision) ── + + defp to_precision(n, [prec | _]) when is_number(n) do + p = max(1, Runtime.to_int(prec)) + f = n * 1.0 + + if f == 0.0 do + zero_precision(n < 0, p) + else + format_precision(f, p) + end + end + + defp to_precision(n, _), do: Runtime.stringify(n) + + defp zero_precision(negative?, p) do + prefix = if negative?, do: "-", else: "" + prefix <> "0" <> if(p > 1, do: "." <> String.duplicate("0", p - 1), else: "") + end + + defp format_precision(f, p) do + exp = trunc(:math.floor(:math.log10(abs(f)))) + sign = if f < 0, do: "-", else: "" + f = js_round_significant(abs(f), p) + + if exp >= p or exp < -6 do + sci = :erlang.float_to_binary(f, [{:scientific, p - 1}]) + + case String.split(sci, "e") do + [mantissa, exp_str] -> + sign <> mantissa <> "e" <> format_exponent(String.to_integer(exp_str)) + + _ -> + Runtime.stringify(f) + end + else + sign <> :erlang.float_to_binary(f, decimals: p - exp - 1) + end + end + + defp js_round_significant(f, p) do + if f == 0.0, do: 0.0, else: do_js_round_sig(f, p) + end + + defp do_js_round_sig(f, p) do + exp = :math.floor(:math.log10(f)) + factor = :math.pow(10, p - 1 - exp) + scaled = f * factor + rounded = :erlang.trunc(scaled + 0.5) + rounded / factor + end + + defp format_exponent(exp) when exp >= 0, do: "+" <> Integer.to_string(exp) + defp format_exponent(exp), do: Integer.to_string(exp) +end diff --git a/lib/quickbeam/vm/runtime/object.ex b/lib/quickbeam/vm/runtime/object.ex new file mode 100644 index 000000000..3a053a049 --- /dev/null +++ b/lib/quickbeam/vm/runtime/object.ex @@ -0,0 +1,652 @@ +defmodule QuickBEAM.VM.Runtime.Object do + @moduledoc "Object static methods." + + use QuickBEAM.VM.Builtin + + import QuickBEAM.VM.Heap.Keys + import QuickBEAM.VM.Value, only: [is_symbol: 1] + alias QuickBEAM.VM.Bytecode + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Interpreter.Values + alias QuickBEAM.VM.Runtime + alias QuickBEAM.VM.Runtime.TypedArray + + @doc "Builds prototype data for object static methods." + def build_prototype do + ref = make_ref() + + Heap.put_obj( + ref, + object heap: false do + method "toString" do + "[object Object]" + end + + method "valueOf" do + this + end + + method "hasOwnProperty" do + has_own_property(args, this) + end + + method "isPrototypeOf" do + false + end + + method "propertyIsEnumerable" do + property_enumerable?(args, this) + end + end + ) + + proto = {:obj, ref} + + for key <- [ + "toString", + "valueOf", + "hasOwnProperty", + "isPrototypeOf", + "propertyIsEnumerable", + "constructor" + ] do + Heap.put_prop_desc(ref, key, %{enumerable: false, configurable: true, writable: true}) + end + + Heap.put_object_prototype(proto) + proto + end + + defp has_own_property([key | _], {:obj, r}) do + data = Heap.get_obj(r, %{}) + is_map(data) and Map.has_key?(data, key) + end + + defp has_own_property(_, _), do: false + + defp property_enumerable?([key | _], {:obj, r}) do + not match?(%{enumerable: false}, Heap.get_prop_desc(r, key)) + end + + defp property_enumerable?(_, _), do: false + + static "keys" do + keys(args) + end + + static "values" do + values(args) + end + + static "entries" do + entries(args) + end + + static "assign" do + assign(args) + end + + static "freeze" do + case hd(args) do + {:obj, ref} = obj -> + Heap.freeze(ref) + obj + + obj -> + obj + end + end + + static "is" do + [a, b | _] = args + + cond do + is_number(a) and is_number(b) and a == 0 and b == 0 -> + Values.neg_zero?(a) == Values.neg_zero?(b) + + is_number(a) and is_number(b) -> + a === b + + a == :nan and b == :nan -> + true + + true -> + a === b + end + end + + static "create" do + case args do + [nil | _] -> Heap.wrap(%{}) + [proto | _] -> Heap.wrap(%{proto() => proto}) + _ -> Runtime.new_object() + end + end + + static "getPrototypeOf" do + case args do + [{:obj, ref} | _] -> + Map.get(Heap.get_obj(ref, %{}), proto(), nil) + + [{:qb_arr, _} | _] -> + func_proto() + + [val | _] when is_list(val) -> + Runtime.global_class_proto("Array") + + [{:builtin, _, _} = b | _] -> + case Map.get(Heap.get_ctor_statics(b), "__proto__") do + nil -> func_proto() + parent -> parent + end + + [{:closure, _, _} = c | _] -> + case Map.get(Heap.get_ctor_statics(c), "__proto__") do + nil -> func_proto() + parent -> parent + end + + [%Bytecode.Function{} | _] -> + func_proto() + + [val | _] when is_function(val) -> + func_proto() + + _ -> + nil + end + end + + defp func_proto do + case Heap.get_func_proto() do + nil -> + call_fn = + {:builtin, "call", + fn [this | args], _ -> + Runtime.call_callback(this, args) + end} + + apply_fn = + {:builtin, "apply", + fn [this, arg_array], _ -> + args = + case arg_array do + {:obj, r} -> Heap.obj_to_list(r) + _ -> [] + end + + Runtime.call_callback(this, args) + end} + + bind_fn = + {:builtin, "bind", + fn [this | bound_args], func -> + {:bound, "bound", func, this, bound_args} + end} + + proto = + object do + prop("call", call_fn) + prop("apply", apply_fn) + prop("bind", bind_fn) + prop("constructor", :undefined) + end + + Heap.put_func_proto(proto) + proto + + existing -> + existing + end + end + + static "defineProperty" do + define_property(args) + end + + static "defineProperties" do + define_properties(args) + end + + static "getOwnPropertyNames" do + get_own_property_names(args) + end + + static "getOwnPropertyDescriptor" do + get_own_property_descriptor(args) + end + + static "fromEntries" do + from_entries(args) + end + + static "getOwnPropertySymbols" do + case args do + [{:obj, ref} | _] -> + data = Heap.get_obj(ref, %{}) + + syms = + if is_map(data), do: Enum.filter(Map.keys(data), &is_symbol/1), else: [] + + Heap.wrap(syms) + + _ -> + Heap.wrap([]) + end + end + + static "hasOwn" do + case args do + [{:obj, ref}, key | _] -> + prop_name = if is_binary(key), do: key, else: Values.stringify(key) + map = Heap.get_obj(ref, %{}) + is_map(map) and Map.has_key?(map, prop_name) + + _ -> + false + end + end + + static "setPrototypeOf" do + case args do + [{:obj, ref} = obj, proto | _] -> + map = Heap.get_obj(ref, %{}) + if is_map(map), do: Heap.put_obj(ref, Map.put(map, proto(), proto)) + obj + + [obj | _] -> + obj + + _ -> + :undefined + end + end + + defp from_entries([{:obj, ref} | _]) do + entries = + case Heap.obj_to_list(ref) do + list when is_list(list) -> list + _ -> [] + end + + result_ref = make_ref() + + map = + Enum.reduce(entries, %{}, fn + {:obj, eref}, acc -> + case Heap.obj_to_list(eref) do + [k, v | _] -> Map.put(acc, Runtime.stringify(k), v) + _ -> acc + end + + [k, v | _], acc -> + Map.put(acc, Runtime.stringify(k), v) + + _, acc -> + acc + end) + + Heap.put_obj(result_ref, map) + {:obj, result_ref} + end + + defp from_entries(_), do: Runtime.new_object() + + defp keys([{:obj, ref} | _]) do + data = Heap.get_obj(ref, %{}) + + if is_list(data) or match?({:qb_arr, _}, data) do + Heap.wrap(array_indices(data)) + else + keys_from_map(ref, data) + end + end + + defp keys(_) do + Heap.wrap([]) + end + + defp keys_from_map(_ref, {:qb_arr, arr}) do + for i <- 0..(:array.size(arr) - 1), do: Integer.to_string(i) + end + + defp keys_from_map(_ref, list) when is_list(list) do + Heap.wrap(array_indices(list)) + end + + defp keys_from_map(ref, map) when is_map(map) do + Heap.wrap(enumerable_keys(ref)) + end + + defp get_own_property_names([{:obj, ref} | _]) do + data = Heap.get_obj(ref, %{}) + + names = + case data do + {:qb_arr, arr} -> + for(i <- 0..(:array.size(arr) - 1), do: Integer.to_string(i)) ++ ["length"] + + list when is_list(list) -> + array_indices(list) ++ ["length"] + + map when is_map(map) -> + Map.keys(map) + |> Enum.filter(&is_binary/1) + |> Enum.reject(fn k -> String.starts_with?(k, "__") and String.ends_with?(k, "__") end) + + _ -> + [] + end + + Heap.wrap(names) + end + + defp get_own_property_names(_) do + Heap.wrap([]) + end + + defp enumerable_keys(ref) do + data = Heap.get_obj(ref, %{}) + + case data do + list when is_list(list) -> + array_indices(list) + + map when is_map(map) -> + raw = + case Map.get(map, key_order()) do + order when is_list(order) -> Enum.reverse(order) + _ -> Map.keys(map) + end + + Runtime.sort_numeric_keys(raw) + |> Enum.filter(fn k -> + not String.starts_with?(k, "__") and + Map.has_key?(map, k) and + not match?(%{enumerable: false}, Heap.get_prop_desc(ref, k)) + end) + + _ -> + [] + end + end + + defp values([{:obj, ref} | _]) do + map = Heap.get_obj(ref, %{}) + Heap.wrap(Enum.map(enumerable_keys(ref), fn k -> Map.get(map, k) end)) + end + + defp values([map | _]) when is_map(map), do: Map.values(map) + defp values(_), do: [] + + defp entries([{:obj, ref} | _]) do + map = Heap.get_obj(ref, %{}) + pairs = Enum.map(enumerable_keys(ref), fn k -> Heap.wrap([k, Map.get(map, k)]) end) + Heap.wrap(pairs) + end + + defp entries([map | _]) when is_map(map) do + Enum.map(Map.to_list(map), fn {k, v} -> [k, v] end) + end + + defp entries(_), do: [] + + defp assign([target | sources]) do + Enum.reduce(sources, target, fn + {:obj, ref}, {:obj, tref} -> + src_map = Heap.get_obj(ref, %{}) + tgt_map = Heap.get_obj(tref, %{}) + Heap.put_obj(tref, Map.merge(tgt_map, src_map)) + {:obj, tref} + + map, {:obj, tref} when is_map(map) -> + tgt_map = Heap.get_obj(tref, %{}) + Heap.put_obj(tref, Map.merge(tgt_map, map)) + {:obj, tref} + + _, acc -> + acc + end) + end + + defp define_property([{:obj, ref} = obj, key, {:obj, desc_ref} | _]) do + desc = Heap.get_obj(desc_ref, %{}) + + prop_name = + case key do + k when is_binary(k) -> k + {:symbol, _} -> key + {:symbol, _, _} -> key + _ -> Values.stringify(key) + end + + existing = Heap.get_obj(ref, %{}) + + if is_list(existing) or match?({:qb_arr, _}, existing) do + case Integer.parse(prop_name) do + {idx, ""} when idx >= 0 -> + writable = Map.get(desc, "writable", true) + enumerable = Map.get(desc, "enumerable", true) + configurable = Map.get(desc, "configurable", true) + + Heap.put_prop_desc(ref, prop_name, %{ + writable: writable, + enumerable: enumerable, + configurable: configurable + }) + + if Map.has_key?(desc, "value") do + Heap.array_set(ref, idx, Map.get(desc, "value")) + end + + throw({:early_return, obj}) + + _ -> + :ok + end + end + + if is_map(existing) and Map.get(existing, typed_array()) do + case Integer.parse(prop_name) do + {idx, ""} when idx >= 0 -> + val = Map.get(desc, "value") + if val != nil, do: TypedArray.set_element(obj, idx, val) + throw({:early_return, obj}) + + _ -> + :ok + end + end + + getter = Map.get(desc, "get") + setter = Map.get(desc, "set") + + if getter != nil or setter != nil do + existing_desc = Map.get(existing, prop_name) + + {old_get, old_set} = + case existing_desc do + {:accessor, g, s} -> {g, s} + _ -> {nil, nil} + end + + new_get = if getter != nil, do: getter, else: old_get + new_set = if setter != nil, do: setter, else: old_set + Heap.put_obj(ref, Map.put(existing, prop_name, {:accessor, new_get, new_set})) + else + val = Map.get(desc, "value", Map.get(existing, prop_name, :undefined)) + Heap.put_obj(ref, Map.put(existing, prop_name, val)) + end + + writable = Map.get(desc, "writable", true) + enumerable = Map.get(desc, "enumerable", true) + configurable = Map.get(desc, "configurable", true) + + Heap.put_prop_desc(ref, prop_name, %{ + writable: writable, + enumerable: enumerable, + configurable: configurable + }) + + obj + catch + {:early_return, val} -> val + end + + defp define_property([{:builtin, _, _} = b, key, {:obj, desc_ref} | _]) do + desc = Heap.get_obj(desc_ref, %{}) + prop_key = if is_binary(key), do: key, else: key + + getter = Map.get(desc, "get") + setter = Map.get(desc, "set") + + if getter != nil or setter != nil do + Heap.put_ctor_static(b, prop_key, {:accessor, getter, setter}) + else + val = Map.get(desc, "value", :undefined) + Heap.put_ctor_static(b, prop_key, val) + end + + b + end + + defp define_property([obj | _]), do: obj + + defp define_properties([obj, {:obj, props_ref} | _]) do + props = Heap.get_obj(props_ref, %{}) + + if is_map(props) do + for {key, desc} <- props, is_binary(key) do + define_property([obj, key, desc]) + end + end + + obj + end + + defp define_properties([obj | _]), do: obj + + defp get_own_property_descriptor([{:obj, ref}, key | _]) do + prop_name = if is_binary(key), do: key, else: Values.stringify(key) + data = Heap.get_obj(ref, %{}) + + cond do + is_list(data) or match?({:qb_arr, _}, data) -> + case Integer.parse(prop_name) do + {idx, ""} when idx >= 0 -> + val = Heap.array_get(ref, idx) + + if val == :undefined and Heap.get_prop_desc(ref, prop_name) == nil do + :undefined + else + data_desc = + Heap.get_prop_desc(ref, prop_name) || + %{writable: true, enumerable: true, configurable: true} + + data_descriptor_obj(val, data_desc) + end + + _ -> + :undefined + end + + is_map(data) and Map.get(data, typed_array()) -> + case Integer.parse(prop_name) do + {idx, ""} when idx >= 0 -> + val = TypedArray.get_element({:obj, ref}, idx) + + if val == :undefined do + :undefined + else + immutable = TypedArray.immutable?({:obj, ref}) + desc_ref = make_ref() + + Heap.put_obj(desc_ref, %{ + "value" => val, + "writable" => not immutable, + "enumerable" => true, + "configurable" => not immutable + }) + + {:obj, desc_ref} + end + + _ -> + :undefined + end + + is_map(data) -> + case Map.get(data, prop_name) do + nil -> + :undefined + + {:accessor, getter, setter} -> + desc = Heap.get_prop_desc(ref, prop_name) || %{enumerable: true, configurable: true} + desc_ref = make_ref() + + Heap.put_obj(desc_ref, %{ + "get" => getter || :undefined, + "set" => setter || :undefined, + "enumerable" => desc.enumerable, + "configurable" => desc.configurable + }) + + {:obj, desc_ref} + + val -> + data_desc = + Heap.get_prop_desc(ref, prop_name) || + %{writable: true, enumerable: true, configurable: true} + + data_descriptor_obj(val, data_desc) + end + + true -> + :undefined + end + end + + defp get_own_property_descriptor([{:builtin, _, _} = b, key | _]) do + prop_key = if is_binary(key), do: key, else: key + statics = Heap.get_ctor_statics(b) + + case Map.get(statics, prop_key) do + {:accessor, getter, setter} -> + desc_ref = make_ref() + + Heap.put_obj(desc_ref, %{ + "get" => getter || :undefined, + "set" => setter || :undefined, + "enumerable" => false, + "configurable" => true + }) + + {:obj, desc_ref} + + nil -> + :undefined + + val -> + data_descriptor_obj(val, %{writable: true, enumerable: true, configurable: true}) + end + end + + defp get_own_property_descriptor(_), do: :undefined + + defp data_descriptor_obj(val, desc) do + desc_ref = make_ref() + + Heap.put_obj(desc_ref, %{ + "value" => val, + "writable" => desc.writable, + "enumerable" => desc.enumerable, + "configurable" => desc.configurable + }) + + {:obj, desc_ref} + end + + defp array_indices(list) do + list |> Enum.with_index() |> Enum.map(fn {_, i} -> Integer.to_string(i) end) + end +end diff --git a/lib/quickbeam/vm/runtime/promise_builtins.ex b/lib/quickbeam/vm/runtime/promise_builtins.ex new file mode 100644 index 000000000..1337e8005 --- /dev/null +++ b/lib/quickbeam/vm/runtime/promise_builtins.ex @@ -0,0 +1,249 @@ +defmodule QuickBEAM.VM.Runtime.PromiseBuiltins do + @moduledoc "JS `Promise` built-in: prototype `then`/`catch`/`finally` and static `resolve`/`reject`/`all`/`race`." + + use QuickBEAM.VM.Builtin + + import QuickBEAM.VM.Heap.Keys + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.PromiseState + + @doc "Builds the JavaScript constructor object for this runtime builtin." + def constructor do + fn args, _this -> + case args do + [executor | _] when not is_nil(executor) and executor != :undefined -> + ref = make_ref() + Heap.put_obj(ref, promise_pending_obj(ref)) + + resolve_fn = + {:builtin, "resolve", + fn args, _ -> + val = arg(args, 0, :undefined) + unless already_settled?(ref), do: PromiseState.resolve(ref, :resolved, val) + :undefined + end} + + reject_fn = + {:builtin, "reject", + fn args, _ -> + val = arg(args, 0, :undefined) + unless already_settled?(ref), do: PromiseState.resolve(ref, :rejected, val) + :undefined + end} + + try do + QuickBEAM.VM.Interpreter.invoke_callback(executor, [resolve_fn, reject_fn]) + catch + {:js_throw, err} -> + unless already_settled?(ref), do: PromiseState.resolve(ref, :rejected, err) + end + + {:obj, ref} + + _ -> + Heap.wrap(%{}) + end + end + end + + defp promise_pending_obj(ref) do + %{ + promise_state() => :pending, + promise_value() => nil, + "then" => + {:builtin, "then", fn args, _this -> PromiseState.promise_then(args, {:obj, ref}) end}, + "catch" => + {:builtin, "catch", fn args, _this -> PromiseState.promise_catch(args, {:obj, ref}) end} + } + end + + defp already_settled?(ref) do + case Heap.get_obj(ref, %{}) do + %{promise_state() => state} when state in [:resolved, :rejected] -> true + _ -> false + end + end + + @doc "Builds the JavaScript prototype object for this runtime builtin." + def prototype do + object do + prop("then", {:builtin, "then", &PromiseState.promise_then/2}) + prop("catch", {:builtin, "catch", &PromiseState.promise_catch/2}) + prop("finally", {:builtin, "finally", &PromiseState.promise_finally/2}) + end + end + + static "resolve" do + case args do + [val | _] -> PromiseState.resolved(val) + [] -> PromiseState.resolved(:undefined) + end + end + + static "reject" do + args |> arg(0, :undefined) |> PromiseState.rejected() + end + + static "all" do + promise_all(hd(args)) + end + + static "allSettled" do + promise_all_settled(hd(args)) + end + + static "any" do + promise_any(hd(args)) + end + + static "race" do + promise_race(hd(args)) + end + + defp unwrap_value({:obj, r} = obj) do + case Heap.get_obj(r, %{}) do + %{promise_state() => :resolved, promise_value() => val} -> val + _ -> obj + end + end + + defp unwrap_value(val), do: val + + defp promise_all(arr) do + items = Heap.to_list(arr) + + results = Enum.map(items, &unwrap_value/1) + + PromiseState.resolved(Heap.wrap(results)) + end + + defp promise_all_settled(arr) do + items = Heap.to_list(arr) + + results = + Enum.map(items, fn item -> + {status, val} = + case item do + {:obj, r} -> + case Heap.get_obj(r, %{}) do + %{promise_state() => :resolved, promise_value() => v} -> {"fulfilled", v} + %{promise_state() => :rejected, promise_value() => v} -> {"rejected", v} + _ -> {"fulfilled", item} + end + + _ -> + {"fulfilled", item} + end + + if status == "fulfilled", + do: Heap.wrap(%{"status" => status, "value" => val}), + else: Heap.wrap(%{"status" => status, "reason" => val}) + end) + + PromiseState.resolved(Heap.wrap(results)) + end + + defp promise_any(arr) do + items = Heap.to_list(arr) + + result = + Enum.find_value(items, fn + {:obj, r} -> + case Heap.get_obj(r, %{}) do + %{promise_state() => :resolved, promise_value() => v} -> v + _ -> nil + end + + val -> + val + end) + + PromiseState.resolved(result || :undefined) + end + + defp promise_race(arr) do + items = Heap.to_list(arr) + + if items == [] do + PromiseState.resolved(:undefined) + else + # Check if any already resolved + already = + Enum.find_value(items, fn + {:obj, r} -> + case Heap.get_obj(r, %{}) do + %{promise_state() => :resolved, promise_value() => v} -> {:ok, v} + %{promise_state() => :rejected, promise_value() => v} -> {:err, v} + _ -> nil + end + + val -> + {:ok, val} + end) + + case already do + {:ok, v} -> + PromiseState.resolved(v) + + {:err, v} -> + PromiseState.rejected(v) + + nil -> + race_ref = make_ref() + Heap.put_obj(race_ref, %{promise_state() => :pending, promise_value() => nil}) + race_promise = {:obj, race_ref} + + Enum.each(items, fn item -> + case item do + {:obj, _} -> + on_fulfilled = + {:builtin, "__race_fulfilled", + fn args, _ -> + val = arg(args, 0, :undefined) + + case Heap.get_obj(race_ref, %{}) do + %{promise_state() => :pending} -> + PromiseState.resolve(race_ref, :resolved, val) + + _ -> + :ok + end + + val + end} + + on_rejected = + {:builtin, "__race_rejected", + fn args, _ -> + reason = arg(args, 0, :undefined) + + case Heap.get_obj(race_ref, %{}) do + %{promise_state() => :pending} -> + PromiseState.resolve(race_ref, :rejected, reason) + + _ -> + :ok + end + + throw({:js_throw, reason}) + end} + + PromiseState.promise_then([on_fulfilled, on_rejected], item) + + _ -> + case Heap.get_obj(race_ref, %{}) do + %{promise_state() => :pending} -> + PromiseState.resolve(race_ref, :resolved, item) + + _ -> + :ok + end + end + end) + + race_promise + end + end + end +end diff --git a/lib/quickbeam/vm/runtime/reflect.ex b/lib/quickbeam/vm/runtime/reflect.ex new file mode 100644 index 000000000..b590590b7 --- /dev/null +++ b/lib/quickbeam/vm/runtime/reflect.ex @@ -0,0 +1,61 @@ +defmodule QuickBEAM.VM.Runtime.Reflect do + @moduledoc "JS `Reflect` built-in: `apply`, `construct`, `has`, `ownKeys`, `defineProperty`, and other reflection methods." + + use QuickBEAM.VM.Builtin + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Interpreter + alias QuickBEAM.VM.ObjectModel.{Get, Put} + alias QuickBEAM.VM.Runtime + + js_object "Reflect" do + method "apply" do + [target, this_arg | rest] = args + args_array = List.first(rest) + + if args_array == :undefined or args_array == nil do + throw( + {:js_throw, + Heap.make_error("CreateListFromArrayLike called on non-object", "TypeError")} + ) + end + + call_args = Heap.to_list(args_array) + + Interpreter.invoke_with_receiver( + target, + call_args, + Runtime.gas_budget(), + this_arg + ) + end + + method "construct" do + [target, args_array | _] = args + call_args = Heap.to_list(args_array) + Runtime.call_callback(target, call_args) + end + + method "get" do + [obj, key | _] = args + Get.get(obj, key) + end + + method "set" do + [obj, key, val | _] = args + Put.put(obj, key, val) + true + end + + method "has" do + [obj, key | _] = args + Put.has_property(obj, key) + end + + method "ownKeys" do + case hd(args) do + {:obj, ref} -> Heap.wrap(Map.keys(Heap.get_obj(ref, %{}))) + _ -> Heap.wrap([]) + end + end + end +end diff --git a/lib/quickbeam/vm/runtime/regexp.ex b/lib/quickbeam/vm/runtime/regexp.ex new file mode 100644 index 000000000..7ab3546a4 --- /dev/null +++ b/lib/quickbeam/vm/runtime/regexp.ex @@ -0,0 +1,98 @@ +defmodule QuickBEAM.VM.Runtime.RegExp do + @moduledoc "JS `RegExp` built-in: `test`, `exec`, `toString`, and NIF-backed regex matching against JS bytecode patterns." + + use QuickBEAM.VM.Builtin + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.ObjectModel.Get + + proto "test" do + test(this, args) + end + + proto "exec" do + exec(this, args) + end + + proto "toString" do + regexp_to_string(this) + end + + @doc "Executes compiled QuickJS regexp bytecode against a string via the native regexp engine." + def nif_exec(bytecode, str, last_index) when is_binary(bytecode) and is_binary(str) do + raw_bc = utf8_to_latin1(bytecode) + # Unicode regexes expect UTF-8 input; non-unicode expect Latin-1 + flags = + if byte_size(bytecode) >= 2, + do: :binary.at(bytecode, 0) + :binary.at(bytecode, 1) * 256, + else: 0 + + is_unicode = Bitwise.band(flags, 0x10) != 0 + raw_str = if is_unicode, do: str, else: utf8_to_latin1(str) + + case QuickBEAM.Native.regexp_exec(raw_bc, raw_str, last_index) do + nil -> + nil + + captures when is_list(captures) -> + Enum.map(captures, fn + {start, end_off} -> {start, end_off - start} + nil -> nil + end) + end + end + + def nif_exec(_, _, _), do: nil + + defp test({:regexp, bytecode, _source}, [s | _]) when is_binary(bytecode) and is_binary(s) do + nif_exec(bytecode, s, 0) != nil + end + + defp test(_, _), do: false + + defp exec({:regexp, bytecode, _source}, [s | _]) when is_binary(bytecode) and is_binary(s) do + case nif_exec(bytecode, s, 0) do + nil -> + nil + + captures -> + strings = + Enum.map(captures, fn + {start, len} -> String.slice(s, start, len) + nil -> :undefined + end) + + match_start = + case hd(captures) do + {start, _} -> start + _ -> 0 + end + + ref = make_ref() + Heap.put_obj(ref, strings) + + # Store extra properties accessible via get_own_property + Heap.put_regexp_result(ref, %{ + "index" => match_start, + "input" => s, + "groups" => :undefined + }) + + {:obj, ref} + end + end + + defp exec(_, _), do: nil + + defp regexp_to_string({:regexp, bytecode, source}) do + flags = Get.regexp_flags(bytecode) + "/#{source}/#{flags}" + end + + defp regexp_to_string(_), do: "/(?:)/" + + defp utf8_to_latin1(bin) do + for <>, into: <<>>, do: <> + rescue + _ -> bin + end +end diff --git a/lib/quickbeam/vm/runtime/set.ex b/lib/quickbeam/vm/runtime/set.ex new file mode 100644 index 000000000..599c00f8f --- /dev/null +++ b/lib/quickbeam/vm/runtime/set.ex @@ -0,0 +1,455 @@ +defmodule QuickBEAM.VM.Runtime.Set do + @moduledoc "JS `Set` and `WeakSet` built-ins: constructor, `add`/`has`/`delete`, `forEach`, and iteration." + + import QuickBEAM.VM.Heap.Keys + use QuickBEAM.VM.Builtin + + alias QuickBEAM.VM.Bytecode + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Interpreter + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.ObjectModel.Get + alias QuickBEAM.VM.Runtime + + @doc "Builds the JavaScript constructor object for this runtime builtin." + def constructor do + fn args, _this -> + ref = make_ref() + items = args |> arg(0, nil) |> Heap.to_list() |> Enum.uniq() + Heap.put_obj(ref, set_object(ref, items)) + {:obj, ref} + end + end + + @doc "Helper for js `set` and `weakset` built-ins: constructor, `add`/`has`/`delete`, `foreach`, and iteration." + def weak_constructor do + fn args, _this -> + ref = make_ref() + + items = + case args do + [source | _] -> + Heap.to_list(source) + |> Enum.each(&validate_weak_key!(&1, "WeakSet")) + + Heap.to_list(source) + + _ -> + [] + end + + Heap.put_obj(ref, %{set_data() => items, "size" => length(items), :weak => true}) + {:obj, ref} + end + end + + @doc "Returns a prototype property value for the given JavaScript property key." + def proto_property("has"), do: {:builtin, "has", &has/2} + def proto_property("add"), do: {:builtin, "add", &add/2} + def proto_property("delete"), do: {:builtin, "delete", &delete/2} + def proto_property("clear"), do: {:builtin, "clear", &clear/2} + def proto_property("values"), do: {:builtin, "values", &values/2} + def proto_property("keys"), do: proto_property("values") + def proto_property("entries"), do: {:builtin, "entries", &entries/2} + def proto_property("forEach"), do: {:builtin, "forEach", &for_each/2} + def proto_property(_), do: :undefined + + defp validate_weak_key!({:obj, _}, _), do: :ok + defp validate_weak_key!({:symbol, _, _}, _), do: :ok + + defp validate_weak_key!(_, kind) do + JSThrow.type_error!("invalid value used as #{kind} key") + end + + defp set_object(set_ref, items) do + methods = + object heap: false do + method "values" do + values_iterator(set_ref) + end + + method "keys" do + values_iterator(set_ref) + end + + method "entries" do + entries_iterator(set_ref) + end + + method "add" do + add_value(set_ref, hd(args)) + end + + method "delete" do + delete_value(set_ref, hd(args)) + end + + method "clear" do + update_data(set_ref, []) + :undefined + end + + method "has" do + hd(args) in data(set_ref) + end + + method "forEach" do + for_each_value(set_ref, hd(args)) + end + + method "difference" do + difference(set_ref, hd(args)) + end + + method "intersection" do + intersection(set_ref, hd(args)) + end + + method "union" do + union(set_ref, hd(args)) + end + + method "symmetricDifference" do + symmetric_difference(set_ref, hd(args)) + end + + method "isSubsetOf" do + subset?(set_ref, hd(args)) + end + + method "isSupersetOf" do + superset?(set_ref, hd(args)) + end + + method "isDisjointFrom" do + disjoint?(set_ref, hd(args)) + end + + prop(set_data(), items) + prop("size", length(items)) + end + + Map.put(methods, {:symbol, "Symbol.iterator"}, methods["values"]) + end + + defp data(set_ref), do: Heap.get_obj(set_ref, %{}) |> Map.get(set_data(), []) + + defp update_data(set_ref, new_data) do + map = Heap.get_obj(set_ref, %{}) + + Heap.put_obj(set_ref, %{ + map + | set_data() => new_data, + "size" => length(new_data) + }) + end + + defp values_iterator(set_ref) do + items = data(set_ref) + pos_ref = make_ref() + Heap.put_obj(pos_ref, %{pos: 0, list: items}) + + next_fn = + {:builtin, "next", + fn _, _ -> + state = Heap.get_obj(pos_ref, %{pos: 0, list: []}) + list = if is_list(state.list), do: state.list, else: [] + + if state.pos >= length(list) do + Heap.put_obj(pos_ref, %{state | pos: state.pos + 1}) + Heap.wrap(%{"value" => :undefined, "done" => true}) + else + value = Enum.at(list, state.pos) + Heap.put_obj(pos_ref, %{state | pos: state.pos + 1}) + Heap.wrap(%{"value" => value, "done" => false}) + end + end} + + object do + prop("next", next_fn) + end + end + + defp entries_iterator(set_ref) do + set_ref + |> data() + |> Enum.map(fn value -> Heap.wrap([value, value]) end) + |> Heap.wrap() + end + + defp add_value(set_ref, value) do + items = data(set_ref) + unless value in items, do: update_data(set_ref, items ++ [value]) + {:obj, set_ref} + end + + defp delete_value(set_ref, value) do + items = data(set_ref) + update_data(set_ref, List.delete(items, value)) + value in items + end + + defp for_each_value(set_ref, callback) do + for value <- data(set_ref) do + Runtime.call_callback(callback, [value, value]) + end + + :undefined + end + + defp other_data(other) do + case other do + {:obj, ref} -> + map = Heap.get_obj(ref, %{}) + + case Map.get(map, set_data()) do + items when is_list(items) -> + items + + _ -> + other + |> Get.get("keys") + |> iterate_setlike(other) + end + + _ -> + [] + end + end + + defp other_size(other) do + case other do + {:obj, _} -> Get.get(other, "size") + _ -> 0 + end + end + + defp validate_set_like!(other) do + size = other_size(other) + + cond do + size == :nan or size == :NaN -> + JSThrow.type_error!("can't convert to number: .size is NaN") + + is_number(size) and size < 0 -> + JSThrow.range_error!("invalid .size: must be non-negative") + + size == :neg_infinity -> + JSThrow.range_error!("invalid .size: must be non-negative") + + true -> + :ok + end + end + + defp other_has(other, value) do + has_fn = Get.get(other, "has") + + case has_fn do + {:builtin, _, fun} when is_function(fun) -> fun.([value], other) == true + fun -> Runtime.call_callback(fun, [value]) == true + end + end + + defp iterate_setlike(keys_fn, _other) when keys_fn in [:undefined, nil], do: [] + + defp iterate_setlike(keys_fn, other) do + iterator = call_with_this(keys_fn, [], other) + collect_iterator(iterator, []) + end + + defp collect_iterator(iterator, acc) do + next_fn = Get.get(iterator, "next") + result = call_with_this(next_fn, [], iterator) + + if Get.get(result, "done") == true do + Enum.reverse(acc) + else + value = Get.get(result, "value") + collect_iterator(iterator, [value | acc]) + end + end + + defp call_with_this(fun, args, this) do + case fun do + {:builtin, _, callback} when is_function(callback) -> + callback.(args, this) + + %Bytecode.Function{} = function -> + Interpreter.invoke_with_receiver(function, args, Runtime.gas_budget(), this) + + {:closure, _, %Bytecode.Function{}} = closure -> + Interpreter.invoke_with_receiver(closure, args, Runtime.gas_budget(), this) + + _ -> + Runtime.call_callback(fun, args) + end + end + + defp difference(set_ref, other) do + validate_set_like!(other) + constructor().([data(set_ref) -- other_data(other)], nil) + end + + defp intersection(set_ref, other) do + validate_set_like!(other) + other_items = other_data(other) + constructor().([Enum.filter(data(set_ref), &(&1 in other_items))], nil) + end + + defp union(set_ref, other) do + validate_set_like!(other) + constructor().([Enum.uniq(data(set_ref) ++ other_data(other))], nil) + end + + defp symmetric_difference(set_ref, other) do + validate_set_like!(other) + items = data(set_ref) + other_items = other_data(other) + constructor().([(items -- other_items) ++ (other_items -- items)], nil) + end + + defp subset?(set_ref, other) do + other_items = other_data(other) + Enum.all?(data(set_ref), &(&1 in other_items)) + end + + defp superset?(set_ref, other) do + items = data(set_ref) + size = other_size(other) + + if is_number(size) and length(items) >= size do + iterator = other |> Get.get("keys") |> call_with_this([], other) + iterate_check_all(iterator, items) + else + false + end + end + + defp disjoint?(set_ref, other) do + items = data(set_ref) + size = other_size(other) + + if is_number(size) and length(items) > size do + iterator = other |> Get.get("keys") |> call_with_this([], other) + iterate_check_none(iterator, items) + else + not Enum.any?(items, fn value -> other_has(other, value) end) + end + end + + defp iterate_check_all(iterator, set_data) do + next_fn = Get.get(iterator, "next") + do_iterate_check(iterator, next_fn, set_data, :all) + end + + defp iterate_check_none(iterator, set_data) do + next_fn = Get.get(iterator, "next") + do_iterate_check(iterator, next_fn, set_data, :none) + end + + defp do_iterate_check(iterator, next_fn, set_data, mode) do + result = call_with_this(next_fn, [], iterator) + + if Get.get(result, "done") == true do + true + else + value = Get.get(result, "value") + in_set = value in set_data + + case mode do + :all -> + if in_set do + do_iterate_check(iterator, next_fn, set_data, mode) + else + call_iterator_return(iterator) + false + end + + :none -> + if in_set do + call_iterator_return(iterator) + false + else + do_iterate_check(iterator, next_fn, set_data, mode) + end + end + end + end + + defp call_iterator_return(iterator) do + return_fn = Get.get(iterator, "return") + + if return_fn != :undefined and return_fn != nil do + call_with_this(return_fn, [], iterator) + end + end + + defp has([value | _], {:obj, ref}) do + items = Heap.get_obj(ref, %{}) |> Map.get(set_data(), []) + value in items + end + + defp add([value | _], {:obj, ref}) do + obj = Heap.get_obj(ref, %{}) + if Map.get(obj, :weak), do: validate_weak_key!(value, "WeakSet") + items = Map.get(obj, set_data(), []) + + unless value in items do + new_items = items ++ [value] + + Heap.put_obj(ref, %{ + obj + | set_data() => new_items, + "size" => length(new_items) + }) + end + + {:obj, ref} + end + + defp delete([value | _], {:obj, ref}) do + obj = Heap.get_obj(ref, %{}) + items = Map.get(obj, set_data(), []) + new_items = List.delete(items, value) + + Heap.put_obj(ref, %{ + obj + | set_data() => new_items, + "size" => length(new_items) + }) + + true + end + + defp clear(_, {:obj, ref}) do + obj = Heap.get_obj(ref, %{}) + Heap.put_obj(ref, %{obj | set_data() => [], "size" => 0}) + :undefined + end + + defp values(_, {:obj, ref}) do + ref + |> Heap.get_obj(%{}) + |> Map.get(set_data(), []) + |> Heap.wrap() + end + + defp entries(_, {:obj, ref}) do + ref + |> Heap.get_obj(%{}) + |> Map.get(set_data(), []) + |> Enum.map(fn value -> Heap.wrap([value, value]) end) + |> Heap.wrap() + end + + defp for_each([callback | _], {:obj, ref}) do + items = Heap.get_obj(ref, %{}) |> Map.get(set_data(), []) + + Enum.each(items, fn value -> + Runtime.call_callback(callback, [value, value, {:obj, ref}]) + end) + + :undefined + end +end diff --git a/lib/quickbeam/vm/runtime/string.ex b/lib/quickbeam/vm/runtime/string.ex new file mode 100644 index 000000000..83a5b9592 --- /dev/null +++ b/lib/quickbeam/vm/runtime/string.ex @@ -0,0 +1,614 @@ +defmodule QuickBEAM.VM.Runtime.String do + @moduledoc "String.prototype methods." + + use QuickBEAM.VM.Builtin + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.ObjectModel.Get + alias QuickBEAM.VM.Runtime + alias QuickBEAM.VM.Runtime.RegExp + + # ── Dispatch ── + + proto "charAt" do + char_at(this, args) + end + + proto "charCodeAt" do + char_code_at(this, args) + end + + proto "codePointAt" do + code_point_at(this, args) + end + + proto "indexOf" do + index_of(this, args) + end + + proto "lastIndexOf" do + last_index_of(this, args) + end + + proto "includes" do + includes(this, args) + end + + proto "startsWith" do + starts_with(this, args) + end + + proto "endsWith" do + ends_with(this, args) + end + + proto "slice" do + slice(this, args) + end + + proto "substring" do + substring(this, args) + end + + proto "substr" do + substr(this, args) + end + + proto "split" do + split(this, args) + end + + proto "trim" do + String.trim(this) + end + + proto "trimStart" do + String.trim_leading(this) + end + + proto "trimEnd" do + String.trim_trailing(this) + end + + proto "toUpperCase" do + :string.uppercase(this) |> IO.iodata_to_binary() + end + + proto "toLowerCase" do + :string.lowercase(this) |> IO.iodata_to_binary() + end + + proto "repeat" do + String.duplicate(this, Runtime.to_int(hd(args))) + end + + proto "padStart" do + pad(this, args, :start) + end + + proto "padEnd" do + pad(this, args, :end) + end + + proto "replace" do + replace(this, args) + end + + proto "replaceAll" do + replace_all(this, args) + end + + proto "match" do + match(this, args) + end + + proto "matchAll" do + match_all(this, args) + end + + proto "localeCompare" do + other = arg(args, 0, "") + other_str = if is_binary(other), do: other, else: Runtime.stringify(other) + + cond do + this < other_str -> -1 + this > other_str -> 1 + true -> 0 + end + end + + proto "search" do + search(this, args) + end + + proto "normalize" do + this + end + + proto "concat" do + this <> Enum.map_join(args, &Runtime.stringify/1) + end + + proto "toString" do + this + end + + proto "valueOf" do + this + end + + proto "at" do + string_at(this, args) + end + + # ── Implementations ── + + defp string_at(s, [idx | _]) when is_binary(s) do + i = if is_number(idx), do: trunc(idx), else: 0 + len = String.length(s) + i = if i < 0, do: len + i, else: i + if i >= 0 and i < len, do: String.at(s, i) || :undefined, else: :undefined + end + + defp string_at(_, _), do: :undefined + + defp char_at(s, [idx | _]) when is_binary(s) do + i = Runtime.to_int(idx) + + if i < 0 or i >= String.length(s) do + "" + else + String.at(s, i) + end + end + + defp char_at(_, _), do: "" + + defp char_code_at(s, [idx | _]) when is_binary(s) do + i = Runtime.to_int(idx) + chars = codepoints(s) + + if i >= 0 and i < tuple_size(chars) do + case elem(chars, i) do + cp when cp >= 0xF0000 and cp <= 0xF07FF -> cp - 0xF0000 + 0xD800 + cp -> cp + end + else + :nan + end + end + + defp char_code_at(_, _), do: :nan + + defp code_point_at(s, [idx | _]) when is_binary(s) do + i = Runtime.to_int(idx) + chars = codepoints(s) + if i >= 0 and i < tuple_size(chars), do: elem(chars, i), else: :undefined + end + + defp code_point_at(_, _), do: :undefined + + defp index_of(s, [sub | rest]) when is_binary(s) and is_binary(sub) do + from = + case rest do + [:infinity | _] -> String.length(s) + [f | _] when is_number(f) -> max(0, Runtime.to_int(f)) + _ -> 0 + end + + if sub == "" do + min(from, String.length(s)) + else + if byte_size(s) == String.length(s) do + if from >= byte_size(s) do + -1 + else + case :binary.match(s, sub, scope: {from, byte_size(s) - from}) do + {pos, _len} -> pos + :nomatch -> -1 + end + end + else + search = String.slice(s, from..-1//1) + + case :binary.match(search, sub) do + {pos, _len} -> from + pos + :nomatch -> -1 + end + end + end + end + + defp index_of(_, _), do: -1 + + defp last_index_of(s, [sub | rest]) when is_binary(s) and is_binary(sub) do + from = + case rest do + [:neg_infinity | _] -> 0 + [f | _] when is_number(f) -> max(0, min(Runtime.to_int(f), String.length(s))) + _ -> String.length(s) + end + + cond do + sub == "" -> + from + + byte_size(s) == String.length(s) -> + scope_len = min(from + byte_size(sub), byte_size(s)) + + case :binary.matches(s, sub, scope: {0, scope_len}) do + [] -> -1 + matches -> elem(List.last(matches), 0) + end + + true -> + search = String.slice(s, 0, from + String.length(sub)) + parts = :binary.split(search, sub, [:global]) + + if length(parts) > 1 do + byte_size(search) - byte_size(List.last(parts)) - byte_size(sub) + else + -1 + end + end + end + + defp last_index_of(_, _), do: -1 + + defp includes(s, [sub | _]) when is_binary(s) and is_binary(sub), do: String.contains?(s, sub) + defp includes(_, _), do: false + + defp starts_with(s, [sub | rest]) when is_binary(s) and is_binary(sub) do + pos = + case rest do + [p | _] -> Runtime.to_int(p) + _ -> 0 + end + + String.starts_with?(String.slice(s, pos..-1//1), sub) + end + + defp starts_with(_, _), do: false + + defp ends_with(s, [sub | _]) when is_binary(s) and is_binary(sub), do: String.ends_with?(s, sub) + defp ends_with(_, _), do: false + + defp slice(s, args) when is_binary(s) do + len = String.length(s) + + {start_idx, end_idx} = + case args do + [st, en] -> {Runtime.normalize_index(st, len), Runtime.normalize_index(en, len)} + [st] -> {Runtime.normalize_index(st, len), len} + [] -> {0, len} + end + + if start_idx < end_idx, do: String.slice(s, start_idx, end_idx - start_idx), else: "" + end + + defp substring(s, [start, end_ | _]) when is_binary(s) do + {a, b} = {Runtime.to_int(start), Runtime.to_int(end_)} + {s2, e2} = if a > b, do: {b, a}, else: {a, b} + String.slice(s, max(s2, 0), max(e2 - s2, 0)) + end + + defp substring(s, [start | _]) when is_binary(s), + do: String.slice(s, max(Runtime.to_int(start), 0)..-1//1) + + defp substring(s, _), do: s + + defp substr(s, [start, len | _]) when is_binary(s), + do: String.slice(s, Runtime.to_int(start), Runtime.to_int(len)) + + defp substr(s, [start | _]) when is_binary(s), do: String.slice(s, Runtime.to_int(start)..-1//1) + defp substr(s, _), do: s + + defp split(s, [{:regexp, bytecode, _source} | rest]) + when is_binary(s) and is_binary(bytecode) do + limit = + case rest do + [n | _] when is_integer(n) -> n + _ -> :infinity + end + + cond do + limit == 0 -> + [] + + s == "" -> + if RegExp.nif_exec(bytecode, s, 0) != nil, do: [], else: [""] + + true -> + nif_regex_split(s, bytecode, 0, 0, limit, []) + end + end + + defp split(s, [sep | rest]) when is_binary(s) and is_binary(sep) do + limit = + case rest do + [n | _] when is_integer(n) -> n + _ -> :infinity + end + + if limit == 0 do + [] + else + parts = if sep == "", do: String.codepoints(s), else: :binary.split(s, sep, [:global]) + if limit == :infinity, do: parts, else: Enum.take(parts, limit) + end + end + + defp split(s, [nil | _]) when is_binary(s), do: [s] + defp split(s, []) when is_binary(s), do: [s] + defp split(_, _), do: [] + + defp nif_regex_split(s, bytecode, offset, last_end, limit, acc) do + slen = byte_size(s) + + case RegExp.nif_exec(bytecode, s, offset) do + nil -> + finalize_split(s, last_end, limit, acc) + + [{match_start, match_len} | captures] -> + match_end = match_start + match_len + + if match_end == last_end do + if offset + 1 >= slen do + finalize_split(s, last_end, limit, acc) + else + nif_regex_split(s, bytecode, offset + 1, last_end, limit, acc) + end + else + before = binary_part(s, last_end, match_start - last_end) + acc = [before | acc] + + cap_values = + Enum.map(captures, fn + {start, len} -> binary_part(s, start, len) + nil -> :undefined + end) + + acc = Enum.reverse(cap_values) ++ acc + + if limit != :infinity and length(acc) >= limit do + Enum.reverse(acc) |> Enum.take(limit) + else + next_offset = if match_len == 0, do: match_end + 1, else: match_end + + if next_offset >= slen do + finalize_split(s, match_end, limit, acc) + else + nif_regex_split(s, bytecode, next_offset, match_end, limit, acc) + end + end + end + end + end + + defp finalize_split(s, last_end, limit, acc) do + tail = + if last_end >= byte_size(s), do: "", else: binary_part(s, last_end, byte_size(s) - last_end) + + result = Enum.reverse([tail | acc]) + if limit != :infinity, do: Enum.take(result, limit), else: result + end + + defp pad(s, [len | rest], dir) when is_binary(s) do + fill = + case rest do + [f | _] when is_binary(f) -> String.slice(f, 0, 1) + _ -> " " + end + + target = Runtime.to_int(len) - String.length(s) + if target <= 0, do: s, else: pad_str(s, target, fill, dir) + end + + defp pad(s, _, _), do: s + + defp pad_str(s, n, fill, :start), do: String.duplicate(fill, n) <> s + defp pad_str(s, n, fill, :end), do: s <> String.duplicate(fill, n) + + defp replace(s, [pattern, replacement | _]) when is_binary(s) do + case pattern do + {:regexp, _bytecode, _source} = r -> + regex_replace(s, r, replacement) + + pat when is_binary(pat) -> + :binary.replace(s, pat, Runtime.stringify(replacement)) + + _ -> + s + end + end + + defp replace(s, _), do: s + + defp replace_all(s, [pattern, replacement | _]) when is_binary(s) do + case pattern do + {:regexp, _bytecode, _source} = r -> + regex_replace(s, r, replacement) + + pat when is_binary(pat) -> + :binary.replace(s, pat, Runtime.stringify(replacement), [:global]) + + _ -> + s + end + end + + defp replace_all(s, _), do: s + + defp match(s, [{:regexp, bytecode, _source} = re | _]) + when is_binary(s) and is_binary(bytecode) do + flags = Get.regexp_flags(bytecode) + + if String.contains?(flags, "g") do + match_all_strings(s, re, 0, []) + else + case RegExp.nif_exec(bytecode, s, 0) do + nil -> + nil + + captures -> + Enum.map(captures, fn + {start, len} -> binary_part(s, start, len) + nil -> :undefined + end) + end + end + end + + defp match(s, [pattern | _]) when is_binary(s) and is_binary(pattern) do + case QuickBEAM.Native.regexp_compile(Regex.escape(pattern), 0) do + bytecode when is_binary(bytecode) -> match(s, [{:regexp, bytecode, pattern}]) + _ -> nil + end + end + + defp match(_, _), do: nil + + defp match_all_strings(s, {:regexp, bytecode, _} = re, offset, acc) do + case RegExp.nif_exec(bytecode, s, offset) do + nil -> + if acc == [], do: nil, else: Enum.reverse(acc) + + [{start, len} | _] -> + matched = binary_part(s, start, len) + new_offset = start + max(len, 1) + + if new_offset > byte_size(s), + do: Enum.reverse([matched | acc]), + else: match_all_strings(s, re, new_offset, [matched | acc]) + end + end + + defp match_all_with_captures(s, {:regexp, bytecode, _} = re, offset, acc) do + case RegExp.nif_exec(bytecode, s, offset) do + nil -> + Enum.reverse(acc) + + [{start, len} | captures] -> + strings = + [binary_part(s, start, len)] ++ + Enum.map(captures, fn + {cs, cl} -> binary_part(s, cs, cl) + nil -> :undefined + end) + + new_offset = start + max(len, 1) + + if new_offset > byte_size(s), + do: Enum.reverse([strings | acc]), + else: match_all_with_captures(s, re, new_offset, [strings | acc]) + end + end + + defp regex_replace(s, {:regexp, bytecode, _source}, replacement) + when is_binary(s) and is_binary(bytecode) do + rep = Runtime.stringify(replacement) + + case RegExp.nif_exec(bytecode, s, 0) do + nil -> + s + + [{match_start, match_len} | _captures] -> + before = binary_part(s, 0, match_start) + + after_str = + binary_part(s, match_start + match_len, byte_size(s) - match_start - match_len) + + before <> rep <> after_str + end + end + + defp regex_replace(s, _, _), do: s + + defp search(s, [{:regexp, bytecode, _source} | _]) when is_binary(s) and is_binary(bytecode) do + case RegExp.nif_exec(bytecode, s, 0) do + nil -> -1 + [{start, _} | _] -> start + end + end + + defp search(s, [pattern | _]) when is_binary(s) and is_binary(pattern) do + case :binary.match(s, pattern) do + {pos, _len} -> pos + :nomatch -> -1 + end + end + + defp search(_, _), do: -1 + + defp match_all(s, [{:regexp, bytecode, _source} = re | _]) + when is_binary(s) and is_binary(bytecode) do + results = match_all_with_captures(s, re, 0, []) + ref = make_ref() + Heap.put_obj(ref, results) + {:obj, ref} + end + + defp match_all(_, _) do + ref = make_ref() + Heap.put_obj(ref, []) + {:obj, ref} + end + + # ── String static methods ── + + static "fromCodePoint" do + Enum.map_join(args, fn n -> + cp = Runtime.to_int(n) + if cp >= 0 and cp <= 0x10FFFF, do: <>, else: "" + end) + end + + static "fromCharCode" do + Enum.map_join(args, fn n -> + cp = Bitwise.band(Runtime.to_int(n), 0xFFFF) + + mapped = + if cp >= 0xD800 and cp <= 0xDFFF, + do: 0xF0000 + (cp - 0xD800), + else: cp + + if mapped >= 0 and mapped <= 0x10FFFF, do: <>, else: "" + end) + end + + static "raw" do + [strings | subs] = args + + map = + case strings do + {:obj, ref} -> Heap.get_obj(ref, %{}) + _ -> %{} + end + + raw_map = + case Map.get(map, "raw") do + {:obj, rref} -> Heap.get_obj(rref, %{}) + _ -> map + end + + len = Map.get(raw_map, "length", 0) + + for i <- 0..(len - 1), into: "" do + part = Runtime.stringify(Map.get(raw_map, Integer.to_string(i), "")) + sub = if i < length(subs), do: Runtime.stringify(Enum.at(subs, i)), else: "" + part <> sub + end + end + + defp codepoints(s) do + case Heap.get_string_codepoints(s) do + nil -> + chars = s |> String.to_charlist() |> List.to_tuple() + Heap.put_string_codepoints(s, chars) + chars + + chars -> + chars + end + end +end diff --git a/lib/quickbeam/vm/runtime/structured_clone.ex b/lib/quickbeam/vm/runtime/structured_clone.ex new file mode 100644 index 000000000..be6ce50ee --- /dev/null +++ b/lib/quickbeam/vm/runtime/structured_clone.ex @@ -0,0 +1,200 @@ +defmodule QuickBEAM.VM.Runtime.StructuredClone do + @moduledoc "structuredClone() implementation for BEAM mode." + + import QuickBEAM.VM.Heap.Keys + + alias QuickBEAM.VM.{Heap, JSThrow, Runtime} + + @doc "Clones a VM value using structured-clone semantics." + def clone(val) do + deep_clone(val) + end + + defp deep_clone(val) when is_number(val), do: val + defp deep_clone(val) when is_binary(val), do: val + defp deep_clone(val) when is_boolean(val), do: val + defp deep_clone(nil), do: nil + defp deep_clone(:undefined), do: :undefined + defp deep_clone(:nan), do: :nan + defp deep_clone(:infinity), do: :infinity + defp deep_clone(:neg_infinity), do: :neg_infinity + + defp deep_clone({:closure, _, _} = f) do + JSThrow.type_error!("#{format_val(f)} could not be cloned.") + end + + defp deep_clone(%QuickBEAM.VM.Bytecode.Function{} = f) do + JSThrow.type_error!("#{format_val(f)} could not be cloned.") + end + + defp deep_clone({:builtin, name, _}) do + JSThrow.type_error!("function #{name} could not be cloned.") + end + + defp deep_clone({:regexp, bc, src}) do + clone_regexp(bc, src) + end + + defp deep_clone({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + {:qb_arr, arr} -> + new_list = :array.to_list(arr) |> Enum.map(&deep_clone/1) + new_ref = make_ref() + Heap.put_obj(new_ref, new_list) + {:obj, new_ref} + + list when is_list(list) -> + new_list = Enum.map(list, &deep_clone/1) + new_ref = make_ref() + Heap.put_obj(new_ref, new_list) + {:obj, new_ref} + + map when is_map(map) -> + clone_object(map) + + other -> + other + end + end + + defp deep_clone(list) when is_list(list) do + Enum.map(list, &deep_clone/1) + end + + defp deep_clone({:qb_arr, arr}) do + new_list = :array.to_list(arr) |> Enum.map(&deep_clone/1) + new_ref = make_ref() + Heap.put_obj(new_ref, new_list) + {:obj, new_ref} + end + + defp deep_clone(other), do: other + + defp clone_object(map) when is_map(map) do + cond do + # Date + Map.has_key?(map, date_ms()) -> + clone_date(map) + + # ArrayBuffer + Map.has_key?(map, buffer()) and not Map.has_key?(map, typed_array()) -> + clone_array_buffer(map) + + # TypedArray + Map.has_key?(map, typed_array()) -> + clone_typed_array(map) + + # Map + Map.has_key?(map, map_data()) -> + clone_map(map) + + # Set + Map.has_key?(map, set_data()) -> + clone_set(map) + + true -> + clone_plain_object(map) + end + end + + defp clone_date(map) do + ms = Map.get(map, date_ms(), 0) + new_ref = make_ref() + Heap.put_obj(new_ref, with_proto(%{date_ms() => ms}, "Date")) + {:obj, new_ref} + end + + defp clone_array_buffer(map) do + buf = Map.get(map, buffer(), <<>>) + new_buf = :binary.copy(buf) + new_ref = make_ref() + base = %{buffer() => new_buf, "byteLength" => byte_size(new_buf)} + Heap.put_obj(new_ref, with_proto(base, "ArrayBuffer")) + {:obj, new_ref} + end + + defp clone_typed_array(map) do + buf = Map.get(map, buffer(), <<>>) + new_buf = :binary.copy(buf) + new_ref = make_ref() + + new_ab_ref = make_ref() + ab_base = %{buffer() => new_buf, "byteLength" => byte_size(new_buf)} + Heap.put_obj(new_ab_ref, with_proto(ab_base, "ArrayBuffer")) + + new_map = + Map.merge(map, %{ + buffer() => new_buf, + "buffer" => {:obj, new_ab_ref} + }) + + Heap.put_obj(new_ref, new_map) + {:obj, new_ref} + end + + defp clone_map(map) do + data = Map.get(map, map_data(), %{}) + + new_data = + Map.new(data, fn {k, v} -> + {deep_clone(k), deep_clone(v)} + end) + + new_ref = make_ref() + base = %{map_data() => new_data, "size" => map_size(new_data)} + Heap.put_obj(new_ref, with_proto(base, "Map")) + {:obj, new_ref} + end + + defp clone_set(map) do + data = Map.get(map, set_data(), %{}) + + new_data = + Map.new(data, fn {k, _v} -> + cloned = deep_clone(k) + {cloned, true} + end) + + new_ref = make_ref() + base = %{set_data() => new_data, "size" => map_size(new_data)} + Heap.put_obj(new_ref, with_proto(base, "Set")) + {:obj, new_ref} + end + + defp with_proto(map, ctor_name) do + QuickBEAM.VM.Builtin.put_if_present(map, "__proto__", Runtime.global_class_proto(ctor_name)) + end + + defp clone_plain_object(map) when is_map(map) do + new_ref = make_ref() + + cloned = + Map.new(map, fn + {k, {:builtin, _, _} = fn_val} -> {k, fn_val} + {k, {:closure, _, _} = fn_val} -> {k, fn_val} + {k, v} -> {k, deep_clone(v)} + end) + + Heap.put_obj(new_ref, cloned) + {:obj, new_ref} + end + + defp clone_regexp(bc, src) do + # Wrap the clone in an {obj, ref} so that clone !== original. + # The object stores the regexp value and also the source/flags as direct properties. + flags = QuickBEAM.VM.ObjectModel.Get.regexp_flags(bc) + new_ref = make_ref() + + map = %{ + "__regexp_inner__" => {:regexp, bc, src}, + "source" => src, + "flags" => flags + } + + Heap.put_obj(new_ref, with_proto(map, "RegExp")) + {:obj, new_ref} + end + + defp format_val({:closure, _, _}), do: "function" + defp format_val(%QuickBEAM.VM.Bytecode.Function{}), do: "function" +end diff --git a/lib/quickbeam/vm/runtime/symbol.ex b/lib/quickbeam/vm/runtime/symbol.ex new file mode 100644 index 000000000..4fc6fff78 --- /dev/null +++ b/lib/quickbeam/vm/runtime/symbol.ex @@ -0,0 +1,54 @@ +defmodule QuickBEAM.VM.Runtime.Symbol do + @moduledoc "JS `Symbol` built-in: constructor, global symbol registry (`Symbol.for`/`keyFor`), and well-known symbol constants." + + use QuickBEAM.VM.Builtin + + alias QuickBEAM.VM.Heap + + @doc "Builds the JavaScript constructor object for this runtime builtin." + def constructor do + fn args, _this -> + desc = + case args do + [s | _] when is_binary(s) -> s + _ -> "" + end + + {:symbol, desc, make_ref()} + end + end + + static_val("iterator", {:symbol, "Symbol.iterator"}) + static_val("toPrimitive", {:symbol, "Symbol.toPrimitive"}) + static_val("hasInstance", {:symbol, "Symbol.hasInstance"}) + static_val("toStringTag", {:symbol, "Symbol.toStringTag"}) + static_val("asyncIterator", {:symbol, "Symbol.asyncIterator"}) + static_val("isConcatSpreadable", {:symbol, "Symbol.isConcatSpreadable"}) + static_val("species", {:symbol, "Symbol.species"}) + static_val("match", {:symbol, "Symbol.match"}) + static_val("replace", {:symbol, "Symbol.replace"}) + static_val("search", {:symbol, "Symbol.search"}) + static_val("split", {:symbol, "Symbol.split"}) + static_val("unscopables", {:symbol, "Symbol.unscopables"}) + + static "for" do + key = hd(args) + + case Heap.get_symbol(key) do + nil -> + sym = {:symbol, key} + Heap.put_symbol(key, sym) + sym + + existing -> + existing + end + end + + static "keyFor" do + case hd(args) do + {:symbol, key} -> key + _ -> :undefined + end + end +end diff --git a/lib/quickbeam/vm/runtime/typed_array.ex b/lib/quickbeam/vm/runtime/typed_array.ex new file mode 100644 index 000000000..83aa64ed6 --- /dev/null +++ b/lib/quickbeam/vm/runtime/typed_array.ex @@ -0,0 +1,624 @@ +defmodule QuickBEAM.VM.Runtime.TypedArray do + @moduledoc "JS TypedArray built-ins: constructors and prototype methods for all numeric array types (Uint8Array through Float64Array)." + + import QuickBEAM.VM.Heap.Keys + + use QuickBEAM.VM.Builtin + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Runtime + + @types %{ + "Uint8Array" => :uint8, + "Int8Array" => :int8, + "Uint8ClampedArray" => :uint8_clamped, + "Uint16Array" => :uint16, + "Int16Array" => :int16, + "Uint32Array" => :uint32, + "Int32Array" => :int32, + "Float32Array" => :float32, + "Float64Array" => :float64, + "Float16Array" => :float16 + } + + @doc "Returns typed-array type descriptors supported by the runtime." + def types, do: @types + + @doc "Builds the JavaScript constructor object for this runtime builtin." + def constructor(type) do + fn args, _this -> + {buf, offset, len, orig_buf} = parse_args(args, type) + ref = make_ref() + + methods = + object heap: false do + method("set", do: set(ref, args)) + method("subarray", do: subarray(ref, args)) + method("join", do: join(ref, args)) + method("forEach", do: for_each(ref, args, this)) + method("map", do: map(ref, args, this)) + method("filter", do: filter(ref, args, this)) + method("every", do: every(ref, args, this)) + method("some", do: some(ref, args, this)) + method("reduce", do: reduce(ref, args, this)) + method("indexOf", do: index_of(ref, args)) + method("find", do: find(ref, args, this)) + method("sort", do: sort(ref)) + method("reverse", do: reverse(ref)) + method("slice", do: slice(ref, args)) + method("fill", do: fill(ref, args)) + method("toString", do: join(ref, [","])) + end + + sym_iter = {:symbol, "Symbol.iterator"} + + obj = + Map.merge(methods, %{ + typed_array() => true, + type_key() => type, + buffer() => buf, + offset() => offset, + "length" => len, + "byteLength" => len * elem_size(type), + "byteOffset" => offset, + "BYTES_PER_ELEMENT" => elem_size(type), + "buffer" => orig_buf || make_buffer_ref(buf), + sym_iter => + {:builtin, "[Symbol.iterator]", + fn _args, this -> + case this do + {:obj, iter_ref} -> + l = Map.get(Heap.get_obj(iter_ref, %{}), "length", 0) + + list = + if l > 0, + do: for(i <- 0..(l - 1), do: get_element({:obj, iter_ref}, i)), + else: [] + + Heap.wrap_iterator(list) + + _ -> + Heap.wrap_iterator([]) + end + end} + }) + + Heap.put_obj(ref, obj) + {:obj, ref} + end + end + + # ── Element access (public, used by ObjectModel.Put) ── + + @doc "Returns whether a typed-array object is backed by immutable data." + def immutable?({:obj, ref}) do + is_immutable_buffer?(Heap.get_obj(ref, %{})) + end + + @doc "Reads an element from a typed-array value." + def get_element({:obj, ref}, idx) do + b = buf(ref) + if b == nil, do: :undefined, else: read_element(b, idx, type(ref)) + end + + @doc "Writes an element to a typed-array value." + def set_element({:obj, ref}, idx, val) do + ta = Heap.get_obj(ref, %{}) + + if Map.get(ta, "__immutable__") || is_immutable_buffer?(ta) do + :ok + else + t = Map.get(ta, type_key(), :uint8) + new_buf = write_element(buf(ref) || <<>>, idx, val, t) + update_buffer(ref, new_buf) + end + end + + # credo:disable-for-next-line Credo.Check.Readability.PredicateFunctionNames + defp is_immutable_buffer?(ta) do + case Map.get(ta, "buffer") do + {:obj, buf_ref} -> + case Heap.get_obj(buf_ref, %{}) do + m when is_map(m) -> Map.get(m, "__immutable__", false) + _ -> false + end + + _ -> + false + end + end + + # ── State readers ── + + defp state(ref), do: Heap.get_obj(ref, %{}) + + defp buf(ref) do + s = state(ref) + + case Map.get(s, "buffer") do + {:obj, buf_ref} -> + case Heap.get_obj(buf_ref, %{}) do + m when is_map(m) -> + if Map.get(m, "__detached__") do + nil + else + ab_buf = Map.get(m, buffer(), <<>>) + offset = Map.get(s, "byteOffset", 0) + byte_len = Map.get(s, "byteLength", byte_size(ab_buf) - offset) + + if offset == 0 and byte_len == byte_size(ab_buf) do + ab_buf + else + binary_part(ab_buf, offset, min(byte_len, byte_size(ab_buf) - offset)) + end + end + + _ -> + Map.get(s, buffer(), <<>>) + end + + _ -> + Map.get(s, buffer(), <<>>) + end + end + + defp len(ref), do: Map.get(state(ref), "length", 0) + defp type(ref), do: Map.get(state(ref), type_key(), :uint8) + + # ── Method implementations ── + + defp set(ref, args) do + {source, offset} = + case args do + [s, o | _] when is_number(o) -> {s, trunc(o)} + [s | _] -> {s, 0} + _ -> {nil, 0} + end + + src_list = Heap.to_list(source) + t = type(ref) + + new_buf = + src_list + |> Enum.with_index(offset) + |> Enum.reduce(buf(ref), fn {v, i}, acc -> write_element(acc, i, v, t) end) + + update_buffer(ref, new_buf) + :undefined + end + + defp subarray(ref, args) do + l = len(ref) + t = type(ref) + s = max(0, min(to_idx(arg(args, 0, 0)), l)) + e = min(to_idx(arg(args, 1, l)), l) + new_len = max(0, e - s) + es = elem_size(t) + + Heap.wrap(%{ + typed_array() => true, + type_key() => t, + buffer() => binary_part(buf(ref), s * es, new_len * es), + offset() => 0, + "length" => new_len, + "byteLength" => new_len * es, + "byteOffset" => 0, + "buffer" => Map.get(state(ref), "buffer") + }) + end + + defp join(ref, args) do + sep = + case args do + [s | _] when is_binary(s) -> s + _ -> "," + end + + {b, l, t} = {buf(ref), len(ref), type(ref)} + Enum.map_join(0..max(0, l - 1), sep, &Integer.to_string(trunc(read_element(b, &1, t)))) + end + + defp for_each(ref, [cb | _], this) do + {b, l, t} = {buf(ref), len(ref), type(ref)} + for i <- 0..(l - 1), do: call(cb, [read_element(b, i, t), i, this]) + :undefined + end + + defp map(ref, [cb | _], this) do + {b, l, t} = {buf(ref), len(ref), type(ref)} + + new_buf = + Enum.reduce(0..(l - 1), b, fn i, acc -> + write_element(acc, i, call(cb, [read_element(acc, i, t), i, this]), t) + end) + + elements = for i <- 0..(l - 1), do: read_element(new_buf, i, t) + constructor(t).([elements], nil) + end + + defp filter(ref, [cb | _], this) do + {b, l, t} = {buf(ref), len(ref), type(ref)} + + vals = + for i <- 0..(l - 1), + ( + v = read_element(b, i, t) + Runtime.truthy?(call(cb, [v, i, this])) + ), + do: v + + constructor(t).([vals], nil) + end + + defp every(ref, [cb | _], this) do + {b, l, t} = {buf(ref), len(ref), type(ref)} + Enum.all?(0..max(0, l - 1), &Runtime.truthy?(call(cb, [read_element(b, &1, t), &1, this]))) + end + + defp some(ref, [cb | _], this) do + {b, l, t} = {buf(ref), len(ref), type(ref)} + Enum.any?(0..max(0, l - 1), &Runtime.truthy?(call(cb, [read_element(b, &1, t), &1, this]))) + end + + defp reduce(ref, args, this) do + {b, l, t} = {buf(ref), len(ref), type(ref)} + cb = arg(args, 0, nil) + init = arg(args, 1, nil) + {start, acc} = if init != nil, do: {0, init}, else: {1, read_element(b, 0, t)} + + Enum.reduce(start..max(start, l - 1), acc, fn i, a -> + call(cb, [a, read_element(b, i, t), i, this]) + end) + end + + defp index_of(ref, [target | _]) do + {b, l, t} = {buf(ref), len(ref), type(ref)} + + Enum.find_value(0..max(0, l - 1), -1, fn i -> + if read_element(b, i, t) == target, do: i + end) + end + + defp find(ref, [cb | _], this) do + {b, l, t} = {buf(ref), len(ref), type(ref)} + + Enum.find_value(0..max(0, l - 1), :undefined, fn i -> + v = read_element(b, i, t) + if Runtime.truthy?(call(cb, [v, i, this])), do: v + end) + end + + defp sort(ref) do + {b, l, t} = {buf(ref), len(ref), type(ref)} + vals = Enum.map(0..max(0, l - 1), &read_element(b, &1, t)) |> Enum.sort() + new_buf = rebuild_buffer(vals, b, t) + update_buffer(ref, new_buf) + {:obj, ref} + end + + defp reverse(ref) do + {b, l, t} = {buf(ref), len(ref), type(ref)} + vals = Enum.map(0..max(0, l - 1), &read_element(b, &1, t)) |> Enum.reverse() + new_buf = rebuild_buffer(vals, b, t) + update_buffer(ref, new_buf) + {:obj, ref} + end + + defp slice(ref, args) do + l = len(ref) + t = type(ref) + s = max(0, to_idx(arg(args, 0, 0))) + e = min(l, to_idx(arg(args, 1, l))) + new_len = max(0, e - s) + es = elem_size(t) + new_buf = if new_len > 0, do: binary_part(buf(ref), s * es, new_len * es), else: <<>> + + species_ctor = get_species_ctor({:obj, ref}) + + if species_ctor do + result = Runtime.call_callback(species_ctor, [new_len]) + + case result do + {:obj, _result_ref} -> + for i <- 0..(new_len - 1) do + val = read_element(new_buf, i, t) + set_element(result, i, val) + end + + _ -> + :ok + end + + result + else + elements = for i <- 0..(new_len - 1), do: read_element(new_buf, i, t) + constructor(t).([elements], nil) + end + end + + defp get_species_ctor({:obj, ref}) do + map = Heap.get_obj(ref, %{}) + ctor = Map.get(map, "constructor") + + case ctor do + {:obj, ctor_ref} -> + ctor_map = Heap.get_obj(ctor_ref, %{}) + species = Map.get(ctor_map, {:symbol, "Symbol.species"}) + if species != nil, do: species, else: nil + + _ -> + nil + end + end + + defp fill(ref, [val | _]) do + {l, t} = {len(ref), type(ref)} + new_buf = Enum.reduce(0..(l - 1), buf(ref) || <<>>, &write_element(&2, &1, val, t)) + update_buffer(ref, new_buf) + {:obj, ref} + end + + defp update_buffer(ref, new_buf) do + s = state(ref) + Heap.put_obj(ref, Map.put(s, buffer(), new_buf)) + + case Map.get(s, "buffer") do + {:obj, buf_ref} -> + buf_map = Heap.get_obj(buf_ref, %{}) + + if is_map(buf_map) do + offset = Map.get(s, "byteOffset", 0) + ab_buf = Map.get(buf_map, buffer(), <<>>) + + before = + if offset > 0, do: binary_part(ab_buf, 0, min(offset, byte_size(ab_buf))), else: <<>> + + after_offset = offset + byte_size(new_buf) + + after_part = + if after_offset < byte_size(ab_buf), + do: binary_part(ab_buf, after_offset, byte_size(ab_buf) - after_offset), + else: <<>> + + merged = before <> new_buf <> after_part + Heap.put_obj(buf_ref, Map.put(buf_map, buffer(), merged)) + end + + _ -> + :ok + end + end + + # ── Helpers ── + + defp decode_float16(bits) do + sign = Bitwise.bsr(bits, 15) |> Bitwise.band(1) + exp = Bitwise.bsr(bits, 10) |> Bitwise.band(0x1F) + frac = Bitwise.band(bits, 0x3FF) + s = if sign == 1, do: -1.0, else: 1.0 + + cond do + exp == 0 and frac == 0 -> s * 0.0 + exp == 0 -> s * frac * :math.pow(2, -24) + exp == 31 and frac == 0 -> if(s == -1.0, do: :neg_infinity, else: :infinity) + exp == 31 -> :nan + true -> s * :math.pow(2, exp - 15) * (1 + frac / 1024) + end + end + + defp encode_float16(n) when n in [:nan, :NaN], do: 0x7E00 + defp encode_float16(:infinity), do: 0x7C00 + defp encode_float16(:neg_infinity), do: 0xFC00 + + defp encode_float16(n) when is_number(n) do + f = n * 1.0 + sign = if f < 0, do: 1, else: 0 + abs_f = abs(f) + + cond do + abs_f == 0.0 -> + Bitwise.bsl(sign, 15) + + abs_f >= 65_520.0 -> + Bitwise.bsl(sign, 15) |> Bitwise.bor(0x7C00) + + true -> + exp = trunc(:math.floor(:math.log2(abs_f))) + exp = max(-14, min(15, exp)) + frac = trunc((abs_f / :math.pow(2, exp) - 1) * 1024 + 0.5) |> Bitwise.band(0x3FF) + exp_biased = exp + 15 + + Bitwise.bsl(sign, 15) + |> Bitwise.bor(Bitwise.bsl(exp_biased, 10)) + |> Bitwise.bor(frac) + end + end + + defp encode_float16(_), do: 0 + + defp bankers_round(n) when is_float(n) do + floor = trunc(n) + frac = n - floor + + cond do + frac > 0.5 -> floor + 1 + frac < 0.5 -> floor + rem(floor, 2) == 0 -> floor + true -> floor + 1 + end + end + + defp bankers_round(n) when is_integer(n), do: n + defp bankers_round(_), do: 0 + + defp call(cb, args), do: Runtime.call_callback(cb, args) + defp to_idx(n) when is_integer(n), do: n + defp to_idx(n) when is_float(n), do: trunc(n) + defp to_idx(_), do: 0 + + defp rebuild_buffer(vals, buf, type) do + vals + |> Enum.with_index() + |> Enum.reduce(buf, fn {v, i}, acc -> write_element(acc, i, v, type) end) + end + + defp parse_args(args, type) do + case args do + [{:obj, buf_ref} = buf_obj | rest] -> + buf = Heap.get_obj(buf_ref, %{}) + + cond do + match?({:qb_arr, _}, buf) -> + list = :array.to_list(elem(buf, 1)) + {list_to_buffer(list, type), 0, length(list), nil} + + is_list(buf) -> + {list_to_buffer(buf, type), 0, length(buf), nil} + + is_map(buf) and Map.has_key?(buf, buffer()) -> + bin = Map.get(buf, buffer()) + off = Enum.at(rest, 0) || 0 + len = Enum.at(rest, 1) || div(byte_size(bin) - off, elem_size(type)) + {bin, off, len, buf_obj} + + true -> + {<<>>, 0, 0, nil} + end + + [n | _] when is_integer(n) -> + {:binary.copy(<<0>>, n * elem_size(type)), 0, n, nil} + + [{:qb_arr, arr} | _] -> + list = :array.to_list(arr) + {list_to_buffer(list, type), 0, length(list), nil} + + [list | _] when is_list(list) -> + {list_to_buffer(list, type), 0, length(list), nil} + + _ -> + {<<>>, 0, 0, nil} + end + end + + # ── Element read/write ── + + defp elem_size(:uint8), do: 1 + defp elem_size(:int8), do: 1 + defp elem_size(:uint8_clamped), do: 1 + defp elem_size(:uint16), do: 2 + defp elem_size(:int16), do: 2 + defp elem_size(:uint32), do: 4 + defp elem_size(:int32), do: 4 + defp elem_size(:float16), do: 2 + defp elem_size(:float32), do: 4 + defp elem_size(:float64), do: 8 + defp elem_size(:bigint64), do: 8 + defp elem_size(:biguint64), do: 8 + + defp read_element(buf, pos, :uint8) when pos < byte_size(buf), do: :binary.at(buf, pos) + defp read_element(buf, pos, :uint8_clamped) when pos < byte_size(buf), do: :binary.at(buf, pos) + + defp read_element(buf, pos, :int8) when pos < byte_size(buf) do + v = :binary.at(buf, pos) + if v >= 128, do: v - 256, else: v + end + + defp read_element(buf, pos, :uint16) when pos * 2 + 1 < byte_size(buf), + do: :binary.decode_unsigned(:binary.part(buf, pos * 2, 2), :little) + + defp read_element(buf, pos, :int16) when pos * 2 + 1 < byte_size(buf) do + v = :binary.decode_unsigned(:binary.part(buf, pos * 2, 2), :little) + if v >= 0x8000, do: v - 0x10000, else: v + end + + defp read_element(buf, pos, :uint32) when pos * 4 + 3 < byte_size(buf), + do: :binary.decode_unsigned(:binary.part(buf, pos * 4, 4), :little) + + defp read_element(buf, pos, :int32) when pos * 4 + 3 < byte_size(buf) do + v = :binary.decode_unsigned(:binary.part(buf, pos * 4, 4), :little) + if v >= 0x80000000, do: v - 0x100000000, else: v + end + + defp read_element(buf, pos, :float16) when pos * 2 + 1 < byte_size(buf) do + <<_::binary-size(pos * 2), half::16-little, _::binary>> = buf + decode_float16(half) + end + + defp read_element(buf, pos, :float32) when pos * 4 + 3 < byte_size(buf) do + <> = :binary.part(buf, pos * 4, 4) + f + end + + defp read_element(buf, pos, :float64) when pos * 8 + 7 < byte_size(buf) do + <> = :binary.part(buf, pos * 8, 8) + f + end + + defp read_element(_, _, _), do: :undefined + + defp write_element(buf, pos, val, :uint8_clamped) when pos < byte_size(buf) do + v = max(0, min(255, bankers_round(val || 0))) + <> = buf + <> + end + + defp write_element(buf, pos, val, :uint8) when pos < byte_size(buf) do + v = trunc(val || 0) |> Bitwise.band(0xFF) + <> = buf + <> + end + + defp write_element(buf, pos, val, :int8) when pos < byte_size(buf) do + <> = buf + <> + end + + defp write_element(buf, pos, val, :int32) when pos * 4 + 3 < byte_size(buf) do + bp = pos * 4 + <> = buf + <> + end + + defp write_element(buf, pos, val, :float64) when pos * 8 + 7 < byte_size(buf) do + bp = pos * 8 + <> = buf + <> + end + + defp write_element(buf, pos, val, :float16) when pos * 2 + 1 < byte_size(buf) do + half = encode_float16(val || 0) + <> = buf + <> + end + + defp write_element(buf, pos, val, :float32) when pos * 4 + 3 < byte_size(buf) do + bp = pos * 4 + <> = buf + <> + end + + defp write_element(buf, pos, val, type) do + es = elem_size(type) + bp = pos * es + + if bp + es <= byte_size(buf) do + <> = buf + <> + else + buf + end + end + + defp list_to_buffer(list, type) do + es = elem_size(type) + buf = :binary.copy(<<0>>, length(list) * es) + + list + |> Enum.with_index() + |> Enum.reduce(buf, fn {val, i}, acc -> write_element(acc, i, val, type) end) + end + + defp make_buffer_ref(buffer_data) do + Heap.wrap(%{buffer() => buffer_data, "byteLength" => byte_size(buffer_data)}) + end +end diff --git a/lib/quickbeam/vm/runtime/web/abort.ex b/lib/quickbeam/vm/runtime/web/abort.ex new file mode 100644 index 000000000..87a0a534b --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/abort.ex @@ -0,0 +1,229 @@ +defmodule QuickBEAM.VM.Runtime.Web.Abort do + @moduledoc "AbortController and AbortSignal builtins for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, argv: 2, constructor: 2, object: 1] + + alias QuickBEAM.VM.{Heap, JSThrow} + alias QuickBEAM.VM.ObjectModel.{Get, Put} + alias QuickBEAM.VM.Runtime.Web.{Callback, StateRef} + alias QuickBEAM.VM.Runtime.WebAPIs + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{ + "AbortController" => WebAPIs.register("AbortController", &build_abort_controller/2), + "AbortSignal" => build_abort_signal_static() + } + end + + defp build_abort_controller(_args, _this) do + signal = build_signal() + + object do + prop("signal", signal) + + method "abort" do + sig = Get.get(this, "signal") + reason = arg(args, 0, :undefined) + actual_reason = if reason == :undefined, do: make_abort_error(), else: reason + do_abort(sig, actual_reason) + :undefined + end + end + end + + defp build_abort_signal_static do + ctor = constructor("AbortSignal", fn _args, _this -> build_signal() end) + + Heap.put_ctor_static( + ctor, + "abort", + {:builtin, "abort", + fn args, _ -> + reason = arg(args, 0, :undefined) + actual_reason = if reason == :undefined, do: make_abort_error(), else: reason + signal = build_signal() + do_abort(signal, actual_reason) + signal + end} + ) + + Heap.put_ctor_static( + ctor, + "timeout", + {:builtin, "timeout", + fn args, _ -> + ms = args |> arg(0, 0) |> coerce_number() + signal = build_signal() + + abort_callback = + {:builtin, "__abort_timeout__", + fn _args, _this -> + do_abort(signal, make_timeout_error()) + :undefined + end} + + QuickBEAM.VM.Runtime.Web.Timers.enqueue_timeout(abort_callback, ms) + signal + end} + ) + + Heap.put_ctor_static( + ctor, + "any", + {:builtin, "any", + fn args, _ -> + signals_val = arg(args, 0, []) + + signals = + case signals_val do + {:obj, _} -> Heap.to_list(signals_val) + list when is_list(list) -> list + _ -> [] + end + + combined = build_signal() + + Enum.each(signals, fn sig -> + if Get.get(sig, "aborted") == true do + reason = Get.get(sig, "reason") + do_abort(combined, reason) + else + add_abort_listener(sig, fn reason -> + do_abort(combined, reason) + end) + end + end) + + combined + end} + ) + + ctor + end + + @doc "Builds an AbortSignal object backed by VM heap state." + def build_signal do + listeners_ref = StateRef.new(%{list: []}) + + object do + prop("aborted", false) + prop("reason", :undefined) + + method "addEventListener" do + [type, callback] = argv(args, [nil, nil]) + + if to_string(type) == "abort" do + store_listeners(listeners_ref, load_listeners(listeners_ref) ++ [callback]) + end + + :undefined + end + + method "removeEventListener" do + [type, callback] = argv(args, [nil, nil]) + + if to_string(type) == "abort" do + listeners = Enum.reject(load_listeners(listeners_ref), &(&1 == callback)) + store_listeners(listeners_ref, listeners) + end + + :undefined + end + + method "throwIfAborted" do + if Get.get(this, "aborted") == true do + reason = Get.get(this, "reason") + JSThrow.error!("Signal aborted") + throw({:js_throw, reason}) + end + + :undefined + end + end + |> tap(fn signal -> + {:obj, ref} = signal + + Heap.update_obj(ref, %{}, fn m -> + Map.put(m, "__listeners_ref__", {:obj, listeners_ref}) + end) + end) + end + + @doc "Transitions an AbortSignal into the aborted state and dispatches listeners." + def do_abort(signal, reason) do + case signal do + {:obj, _} -> + aborted = Get.get(signal, "aborted") + + if aborted != true do + Put.put(signal, "aborted", true) + Put.put(signal, "reason", reason) + + case Get.get(signal, "__listeners_ref__") do + {:obj, lref} -> + listeners = load_listeners(lref) + + Enum.each(listeners, &Callback.safe_invoke(&1, [])) + + _ -> + :ok + end + end + + _ -> + :ok + end + end + + @doc "Registers an abort listener on an AbortSignal state object." + def add_abort_listener(signal, fun) do + cb = + {:builtin, "__abort_listener__", + fn _args, _this -> + reason = Get.get(signal, "reason") + fun.(reason) + :undefined + end} + + case Get.get(signal, "__listeners_ref__") do + {:obj, lref} -> + existing = load_listeners(lref) + store_listeners(lref, existing ++ [cb]) + + _ -> + :ok + end + end + + defp load_listeners(ref) do + case StateRef.get(ref, %{}) do + %{list: list} when is_list(list) -> list + _ -> [] + end + end + + defp store_listeners(ref, listeners) do + StateRef.put(ref, %{list: listeners}) + end + + @doc "Creates the standard abort error value." + def make_abort_error do + make_dom_exception("The operation was aborted.", "AbortError") + end + + defp make_timeout_error do + make_dom_exception("The operation timed out.", "TimeoutError") + end + + defp make_dom_exception(message, name) do + alias QuickBEAM.VM.Runtime.Web.Events + Events.make_dom_exception(message, name) + end + + defp coerce_number(n) when is_integer(n), do: n + defp coerce_number(n) when is_float(n), do: trunc(n) + defp coerce_number(_), do: 0 +end diff --git a/lib/quickbeam/vm/runtime/web/beam_api.ex b/lib/quickbeam/vm/runtime/web/beam_api.ex new file mode 100644 index 000000000..61bf66c3d --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/beam_api.ex @@ -0,0 +1,268 @@ +defmodule QuickBEAM.VM.Runtime.Web.BeamAPI do + @moduledoc "Beam object builtin for BEAM mode — provides Beam.self, Beam.onMessage, Beam.send, Beam.call, Beam.monitor, Beam.demonitor." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [object: 1] + + import QuickBEAM.VM.Heap.Keys + alias QuickBEAM.VM.{Heap, Invocation, JSThrow, PromiseState} + + @on_message_key :qb_beam_on_message + @monitors_key :qb_beam_monitors + @pending_messages_key :qb_beam_pending_messages + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{"Beam" => beam_object()} + end + + defp beam_object do + object do + method "self" do + ctx = Heap.get_ctx() + runtime_pid = if ctx, do: Map.get(ctx, :runtime_pid), else: nil + runtime_pid || :undefined + end + + method "onMessage" do + case args do + [handler | _] when not is_nil(handler) and handler != :undefined -> + # Validate it's a function + unless QuickBEAM.VM.Builtin.callable?(handler) do + JSThrow.type_error!("Beam.onMessage requires a function argument") + end + + Process.put(@on_message_key, handler) + + # Deliver any pending messages + pending = Process.get(@pending_messages_key, []) + Process.delete(@pending_messages_key) + + Enum.each(pending, fn msg -> + deliver_message(handler, msg) + end) + + :undefined + + _ -> + JSThrow.type_error!("Beam.onMessage requires a function argument") + end + end + + method "send" do + case args do + [pid, msg | _] when is_pid(pid) -> + elixir_msg = js_to_elixir(msg) + send(pid, elixir_msg) + :undefined + + [nil | _] -> + JSThrow.type_error!("Beam.send requires a pid and a message") + + [:undefined | _] -> + JSThrow.type_error!("Beam.send requires a pid and a message") + + [] -> + JSThrow.type_error!("Beam.send requires a pid and a message") + + [_, _ | _] -> + JSThrow.type_error!("Value is not a valid PID") + + [_pid_like | _] -> + JSThrow.type_error!("Value is not a valid PID") + end + end + + method "call" do + case args do + [handler_name | call_args] when is_binary(handler_name) -> + ctx = Heap.get_ctx() + runtime_pid = if ctx, do: Map.get(ctx, :runtime_pid), else: nil + + handler_globals = Heap.get_handler_globals() || %{} + flat_args = call_args + + case Map.get(handler_globals, handler_name) do + {:builtin, _, cb} -> + result = cb.(flat_args) + PromiseState.resolved(result) + + _ -> + # Try via GenServer + if runtime_pid do + try do + result = + GenServer.call(runtime_pid, {:beam_call, handler_name, flat_args}, 30_000) + + PromiseState.resolved(result) + catch + :exit, _ -> + PromiseState.rejected( + Heap.make_error("Handler not found: #{handler_name}", "Error") + ) + end + else + PromiseState.rejected( + Heap.make_error("Handler not found: #{handler_name}", "Error") + ) + end + end + + _ -> + JSThrow.type_error!("Beam.call requires a handler name") + end + end + + method "callSync" do + case args do + [handler_name | call_args] when is_binary(handler_name) -> + handler_globals = Heap.get_handler_globals() || %{} + + case Map.get(handler_globals, handler_name) do + {:builtin, _, cb} -> cb.(call_args) + _ -> :undefined + end + + _ -> + :undefined + end + end + + method "monitor" do + case args do + [pid, callback | _] when is_pid(pid) -> + ref = Process.monitor(pid) + monitors = Process.get(@monitors_key, %{}) + Process.put(@monitors_key, Map.put(monitors, ref, callback)) + ref + + _ -> + JSThrow.type_error!("Beam.monitor requires a pid and a callback") + end + end + + method "demonitor" do + case args do + [ref | _] when is_reference(ref) -> + Process.demonitor(ref, [:flush]) + monitors = Process.get(@monitors_key, %{}) + Process.put(@monitors_key, Map.delete(monitors, ref)) + :undefined + + _ -> + :undefined + end + end + + method "receive_pending" do + # Drain pending BEAM messages and deliver to handler + drain_beam_messages() + :undefined + end + end + end + + defp deliver_message(handler, msg) do + try do + Invocation.invoke_with_receiver(handler, [msg], :undefined) + rescue + _ -> :ok + catch + {:js_throw, _} -> :ok + _, _ -> :ok + end + end + + defp drain_beam_messages do + handler = Process.get(@on_message_key) + + receive do + {:beam_message, msg} -> + if handler, do: deliver_message(handler, msg) + drain_beam_messages() + + {:DOWN, ref, :process, _pid, reason} -> + monitors = Process.get(@monitors_key, %{}) + + case Map.get(monitors, ref) do + nil -> + :ok + + callback -> + reason_str = + case reason do + :normal -> "normal" + :killed -> "killed" + other when is_atom(other) -> Atom.to_string(other) + _ -> inspect(reason) + end + + try do + Invocation.invoke_with_receiver(callback, [reason_str], :undefined) + rescue + _ -> :ok + catch + _, _ -> :ok + end + + monitors2 = Process.get(@monitors_key, %{}) + Process.put(@monitors_key, Map.delete(monitors2, ref)) + end + + drain_beam_messages() + + _other -> + drain_beam_messages() + after + 0 -> :ok + end + end + + defp js_to_elixir({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + {:qb_arr, arr} -> + :array.to_list(arr) |> Enum.map(&js_to_elixir/1) + + list when is_list(list) -> + Enum.map(list, &js_to_elixir/1) + + map when is_map(map) -> + map + |> Map.drop([key_order()]) + |> Map.new(fn {k, v} -> {js_to_elixir_key(k), js_to_elixir(v)} end) + |> Map.reject(fn {k, _} -> + is_binary(k) and String.starts_with?(k, "__") and String.ends_with?(k, "__") + end) + + _ -> + nil + end + end + + defp js_to_elixir(:undefined), do: nil + defp js_to_elixir(nil), do: nil + defp js_to_elixir(v) when is_pid(v), do: v + defp js_to_elixir(v) when is_reference(v), do: v + defp js_to_elixir(v) when is_binary(v), do: v + defp js_to_elixir(v) when is_number(v), do: v + defp js_to_elixir(v) when is_boolean(v), do: v + defp js_to_elixir(list) when is_list(list), do: Enum.map(list, &js_to_elixir/1) + defp js_to_elixir(v), do: v + + defp js_to_elixir_key(k) when is_binary(k), do: k + defp js_to_elixir_key(k) when is_integer(k), do: Integer.to_string(k) + defp js_to_elixir_key(k), do: inspect(k) + + @doc "Called from the Elixir side to deliver a message to JS" + def deliver_beam_message(js_msg) do + handler = Process.get(@on_message_key) + + if handler do + deliver_message(handler, js_msg) + else + pending = Process.get(@pending_messages_key, []) + Process.put(@pending_messages_key, pending ++ [js_msg]) + end + end +end diff --git a/lib/quickbeam/vm/runtime/web/binary_data.ex b/lib/quickbeam/vm/runtime/web/binary_data.ex new file mode 100644 index 000000000..6994ff296 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/binary_data.ex @@ -0,0 +1,29 @@ +defmodule QuickBEAM.VM.Runtime.Web.BinaryData do + @moduledoc "Helpers for exposing BEAM binaries as Web binary JS objects." + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Runtime.Constructors + + @doc "Constructs a JavaScript `Uint8Array` from a binary." + def uint8_array(bytes) when is_binary(bytes) do + bytes + |> :binary.bin_to_list() + |> uint8_array() + end + + def uint8_array(bytes) when is_list(bytes) do + Constructors.construct("Uint8Array", [bytes], fn -> Heap.wrap(bytes) end) + end + + @doc "Constructs a JavaScript `ArrayBuffer` containing `bytes`." + def array_buffer(bytes) when is_binary(bytes) do + byte_len = byte_size(bytes) + + Constructors.construct( + "ArrayBuffer", + [byte_len], + fn -> Heap.wrap(%{"__buffer__" => bytes, "byteLength" => byte_len}) end, + &Map.put(&1, "__buffer__", bytes) + ) + end +end diff --git a/lib/quickbeam/vm/runtime/web/blob.ex b/lib/quickbeam/vm/runtime/web/blob.ex new file mode 100644 index 000000000..b0bf0b8c1 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/blob.ex @@ -0,0 +1,233 @@ +defmodule QuickBEAM.VM.Runtime.Web.Blob do + @moduledoc "Blob and File constructor builtins for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, argv: 2, object: 1] + + alias QuickBEAM.VM.{Heap, PromiseState, Runtime} + alias QuickBEAM.VM.Interpreter.Values + alias QuickBEAM.VM.ObjectModel.Get + alias QuickBEAM.VM.Runtime.Web.BinaryData + alias QuickBEAM.VM.Runtime.WebAPIs + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{ + "Blob" => WebAPIs.register("Blob", &build_blob/2), + "File" => WebAPIs.register("File", &build_file/2) + } + end + + def build_blob(args, _this) do + [parts_val, opts_val] = argv(args, [nil, nil]) + + content = extract_content(parts_val) + + mime_type = + case opts_val do + {:obj, _} = obj -> + case obj |> Get.get("type") |> Values.stringify() do + "undefined" -> "" + "null" -> "" + s -> s + end + + _ -> + "" + end + + build_blob_object(content, mime_type) + end + + @doc "Builds file data for blob and file constructor builtins for beam mode." + def build_file(args, _this) do + [parts_val, name_val, opts_val] = argv(args, [nil, "", nil]) + + content = extract_content(parts_val) + file_name = to_string(name_val) + + {mime_type, last_modified} = + case opts_val do + {:obj, _} = obj -> + mt = + case obj |> Get.get("type") |> Values.stringify() do + "undefined" -> "" + "null" -> "" + s -> s + end + + lm = + case Get.get(obj, "lastModified") do + :undefined -> System.os_time(:millisecond) + nil -> System.os_time(:millisecond) + n when is_number(n) -> trunc(n) + _ -> System.os_time(:millisecond) + end + + {mt, lm} + + _ -> + {"", System.os_time(:millisecond)} + end + + blob_base = build_blob_object(content, mime_type) + file_ctor = get_file_ctor() + file_proto = Runtime.global_class_proto("File") + + {:obj, ref} = blob_base + + Heap.update_obj(ref, %{}, fn m -> + base = + m + |> Map.put("name", file_name) + |> Map.put("lastModified", last_modified) + |> Map.put("constructor", file_ctor) + + if file_proto, do: Map.put(base, "__proto__", file_proto), else: base + end) + + blob_base + end + + defp get_file_ctor, do: Runtime.global_constructor("File") + + @doc "Builds blob object data for blob and file constructor builtins for beam mode." + def build_blob_object(content, mime_type) do + content_ref = make_ref() + Heap.put_obj(content_ref, content) + + blob_ctor = get_blob_ctor() + blob_proto = Runtime.global_class_proto("Blob") + + object do + prop("size", byte_size(content)) + prop("type", mime_type) + prop("constructor", blob_ctor) + prop("__proto__", blob_proto) + + method "text" do + raw = Heap.get_obj(content_ref, "") + PromiseState.resolved(raw) + end + + method "arrayBuffer" do + raw = Heap.get_obj(content_ref, "") + buf = make_array_buffer(raw) + PromiseState.resolved(buf) + end + + method "bytes" do + raw = Heap.get_obj(content_ref, "") + make_uint8_from_binary(raw) + end + + method "slice" do + raw = Heap.get_obj(content_ref, "") + total = byte_size(raw) + + start_idx = args |> arg(0, 0) |> normalize_slice_idx(total) + end_idx = args |> arg(1, total) |> normalize_slice_idx(total) + new_mime = args |> arg(2, mime_type) |> to_string() + + slice_len = max(0, end_idx - start_idx) + sliced = binary_part(raw, min(start_idx, total), min(slice_len, total - start_idx)) + build_blob_object(sliced, new_mime) + end + + method "stream" do + :undefined + end + end + end + + defp get_blob_ctor, do: Runtime.global_constructor("Blob") + + defp normalize_slice_idx(idx, total) when is_integer(idx) do + cond do + idx < 0 -> max(0, total + idx) + idx > total -> total + true -> idx + end + end + + defp normalize_slice_idx(idx, total) when is_float(idx), + do: normalize_slice_idx(trunc(idx), total) + + defp normalize_slice_idx(:undefined, total), do: total + defp normalize_slice_idx(nil, total), do: total + defp normalize_slice_idx(_, _), do: 0 + + defp extract_content(nil), do: "" + defp extract_content(:undefined), do: "" + + defp extract_content({:obj, _} = arr) do + arr + |> Heap.to_list() + |> parts_to_binary() + end + + defp extract_content(list) when is_list(list), do: parts_to_binary(list) + + defp extract_content(_), do: "" + + defp part_to_binary({:obj, ref} = obj) do + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> + cond do + Map.has_key?(map, "__buffer__") and Map.has_key?(map, "__typed_array__") -> + buf_raw = Map.get(map, "__buffer__", "") + + if is_binary(buf_raw) do + offset = Map.get(map, "byteOffset", 0) + len = Map.get(map, "byteLength", 0) + + if byte_size(buf_raw) >= offset + len do + binary_part(buf_raw, offset, len) + else + "" + end + else + "" + end + + Map.has_key?(map, "__buffer__") -> + Map.get(map, "__buffer__", "") + + Map.has_key?(map, "size") and Map.has_key?(map, "type") -> + case Get.get(obj, "text") do + {:builtin, _, _} -> Values.stringify(obj) + _ -> Values.stringify(obj) + end + + true -> + Values.stringify(obj) + end + + list when is_list(list) -> + bytes_from_list(list) + + _ -> + Values.stringify(obj) + end + end + + defp part_to_binary(v), do: Values.stringify(v) + + defp parts_to_binary(parts) do + for part <- parts, into: <<>>, do: part_to_binary(part) + end + + defp bytes_from_list(list) do + for value <- list, into: <<>> do + case value do + n when is_integer(n) -> <> + _ -> <<0>> + end + end + end + + defp make_array_buffer(data) when is_binary(data), do: BinaryData.array_buffer(data) + + defp make_uint8_from_binary(data) when is_binary(data), do: BinaryData.uint8_array(data) +end diff --git a/lib/quickbeam/vm/runtime/web/broadcast_channel.ex b/lib/quickbeam/vm/runtime/web/broadcast_channel.ex new file mode 100644 index 000000000..44bcc9890 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/broadcast_channel.ex @@ -0,0 +1,88 @@ +defmodule QuickBEAM.VM.Runtime.Web.BroadcastChannel do + @moduledoc "BroadcastChannel builtin for BEAM mode — in-process pub/sub via process dictionary." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, object: 1] + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Runtime.Web.Callback + alias QuickBEAM.VM.Runtime.WebAPIs + + @channels_key :qb_broadcast_channels + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{"BroadcastChannel" => WebAPIs.register("BroadcastChannel", &build_channel/2)} + end + + defp build_channel(args, _this) do + channel_name = args |> List.first("") |> to_string() + listener_ref = make_ref() + Heap.put_obj(listener_ref, nil) + + channel_id = make_ref() + register_channel(channel_name, channel_id, listener_ref) + + object do + prop("name", channel_name) + + method "postMessage" do + data = arg(args, 0, :undefined) + deliver_message(channel_name, channel_id, data) + :undefined + end + + method "close" do + unregister_channel(channel_name, channel_id) + :undefined + end + + accessor "onmessage" do + get do + Heap.get_obj(listener_ref, nil) + end + + set do + Heap.put_obj(listener_ref, arg(args, 0, nil)) + :undefined + end + end + end + end + + defp deliver_message(channel_name, channel_id, data) do + channel_name + |> get_channel_listeners() + |> Enum.each(fn {id, listener_ref} -> + if id != channel_id do + handler = Heap.get_obj(listener_ref, nil) + + if handler not in [nil, false, :undefined] do + event = Heap.wrap(%{"data" => data, "type" => "message"}) + Callback.safe_invoke(handler, [event]) + end + end + end) + end + + defp register_channel(name, id, ref) do + channels = Process.get(@channels_key, %{}) + listeners = Map.get(channels, name, []) + updated = Map.put(channels, name, [{id, ref} | listeners]) + Process.put(@channels_key, updated) + end + + defp unregister_channel(name, id) do + channels = Process.get(@channels_key, %{}) + listeners = Map.get(channels, name, []) + updated_listeners = Enum.reject(listeners, fn {lid, _} -> lid == id end) + updated = Map.put(channels, name, updated_listeners) + Process.put(@channels_key, updated) + end + + defp get_channel_listeners(name) do + channels = Process.get(@channels_key, %{}) + Map.get(channels, name, []) + end +end diff --git a/lib/quickbeam/vm/runtime/web/buffer.ex b/lib/quickbeam/vm/runtime/web/buffer.ex new file mode 100644 index 000000000..20c0b86c5 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/buffer.ex @@ -0,0 +1,957 @@ +defmodule QuickBEAM.VM.Runtime.Web.Buffer do + @moduledoc "Node.js Buffer class builtin for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import Bitwise + import QuickBEAM.VM.Builtin, only: [arg: 3, argv: 2, builtin_args: 2] + + alias QuickBEAM.VM.{Heap, JSThrow, Runtime} + alias QuickBEAM.VM.ObjectModel.{Get, Put} + alias QuickBEAM.VM.Runtime.Constructors + alias QuickBEAM.VM.Runtime.Web.Buffer.{BinaryCodec, Encoding} + + @known_encodings ~w[utf8 utf-8 ascii latin1 binary base64 base64url hex ucs2 utf16le utf-16le ucs-2] + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + ctor = build_buffer_ctor() + %{"Buffer" => ctor} + end + + defp build_buffer_ctor do + ctor = {:builtin, "Buffer", &build_buffer_from/2} + proto = build_buffer_proto(ctor) + Constructors.put_prototype(ctor, proto) + + put_static_methods(ctor, %{ + "from" => &buffer_from/1, + "alloc" => &buffer_alloc/1, + "allocUnsafe" => &buffer_alloc_unsafe/1, + "allocUnsafeSlow" => &buffer_alloc_unsafe/1, + "concat" => &buffer_concat/1, + "compare" => &buffer_compare/1, + "isBuffer" => &buffer_is_buffer/1, + "isEncoding" => &buffer_is_encoding/1, + "byteLength" => &buffer_byte_length/1 + }) + + ctor + end + + defp put_static_methods(ctor, methods) do + Enum.each(methods, fn {name, callback} -> + Heap.put_ctor_static(ctor, name, builtin_args("Buffer." <> name, callback)) + end) + end + + defp build_buffer_proto(ctor) do + proto_ref = make_ref() + + proto_map = + nil + |> buffer_methods() + |> Map.merge(%{"constructor" => ctor, "__is_buffer__" => true}) + |> put_if_present("__proto__", get_uint8_proto()) + + Heap.put_obj(proto_ref, proto_map) + {:obj, proto_ref} + end + + defp put_if_present(map, _key, nil), do: map + defp put_if_present(map, key, value), do: Map.put(map, key, value) + + defp get_uint8_proto, do: Runtime.global_class_proto("Uint8Array") + + # Constructor call (new Buffer is deprecated but we still need to handle it) + defp build_buffer_from(args, _this), do: buffer_from(args) + + # ── Buffer.from ── + + @doc "Creates a Buffer value from supported JavaScript input types." + def buffer_from([src | rest]) do + bytes = + case src do + b when is_binary(b) -> + encoding = get_encoding(rest, 0) + + case encoding do + "hex" -> + Encoding.decode(b, "hex") + + "base64" -> + Encoding.decode(b, "base64") + + "base64url" -> + Encoding.decode(b, "base64url") + + "latin1" -> + Encoding.decode(b, "latin1") + + "binary" -> + Encoding.decode(b, "latin1") + + "ascii" -> + Encoding.decode(b, "ascii") + + enc when enc in ["utf16le", "ucs2", "ucs-2", "utf-16le"] -> + Encoding.decode(b, "utf16le") + + # utf8 + _ -> + b + end + + {:bytes, bin} when is_binary(bin) -> + bin + + {:obj, _} = arr -> + case get_obj_type(arr) do + :array_buffer -> + ab_data = extract_ab(arr) + offset = to_int(Enum.at(rest, 0, 0)) + ab_len = byte_size(ab_data) + len = to_int(Enum.at(rest, 1, ab_len - offset)) + start = min(offset, ab_len) + actual_len = min(len, ab_len - start) + if actual_len > 0, do: binary_part(ab_data, start, actual_len), else: <<>> + + :typed_array -> + extract_typed_bytes(arr) + + :json_buffer -> + data = Get.get(arr, "data") + list_to_bytes(data) + + :array_like -> + list_to_bytes(arr) + + _ -> + <<>> + end + + {:qb_arr, _} = arr -> + items = Heap.to_list(arr) + list_to_bytes_raw(items) + + list when is_list(list) -> + list_to_bytes_raw(list) + + _ -> + <<>> + end + + wrap_buffer(bytes) + end + + def buffer_from([]) do + wrap_buffer(<<>>) + end + + # ── Buffer.alloc ── + + defp buffer_alloc([size | rest]) do + n = to_int(size) + fill = Enum.at(rest, 0, 0) + _enc = get_encoding(rest, 2) + + bytes = + case fill do + 0 -> + :binary.copy(<<0>>, n) + + f when is_integer(f) -> + byte_val = band(f, 0xFF) + :binary.copy(<>, n) + + f when is_float(f) -> + byte_val = band(trunc(f), 0xFF) + :binary.copy(<>, n) + + f when is_binary(f) -> + Encoding.fill(n, f) + + _ -> + :binary.copy(<<0>>, n) + end + + wrap_buffer(bytes) + end + + defp buffer_alloc([]), do: wrap_buffer(<<>>) + + defp buffer_alloc_unsafe([size | _]) do + n = to_int(size) + wrap_buffer(:binary.copy(<<0>>, n)) + end + + defp buffer_alloc_unsafe([]), do: wrap_buffer(<<>>) + + # ── Buffer.concat ── + + defp buffer_concat([list | rest]) do + total_limit = + case rest do + [n | _] when is_integer(n) -> n + [n | _] when is_float(n) -> trunc(n) + _ -> nil + end + + items = + case list do + {:obj, _} -> Heap.to_list(list) + l when is_list(l) -> l + _ -> [] + end + + combined = for item <- items, into: <<>>, do: extract_buf_bytes(item) + + final = + case total_limit do + nil -> + combined + + n -> + limit = min(n, byte_size(combined)) + binary_part(combined, 0, limit) + end + + wrap_buffer(final) + end + + defp buffer_concat([]), do: wrap_buffer(<<>>) + + # ── Buffer.compare (static) ── + + defp buffer_compare([a, b | _]) do + ba = extract_buf_bytes(a) + bb = extract_buf_bytes(b) + Encoding.compare(ba, bb) + end + + defp buffer_compare(_), do: 0 + + # ── Buffer.isBuffer ── + + defp buffer_is_buffer([{:obj, ref} | _]) do + case Heap.get_obj(ref, %{}) do + m when is_map(m) -> Map.get(m, "__is_buffer__", false) == true + _ -> false + end + end + + defp buffer_is_buffer(_), do: false + + # ── Buffer.isEncoding ── + + defp buffer_is_encoding([enc | _]) when is_binary(enc) do + String.downcase(enc) in @known_encodings + end + + defp buffer_is_encoding(_), do: false + + # ── Buffer.byteLength ── + + defp buffer_byte_length([str | rest]) when is_binary(str) do + enc = get_encoding(rest, 0) + + case enc do + "hex" -> div(byte_size(str), 2) + "base64" -> Encoding.byte_length(str, "base64") + "base64url" -> Encoding.byte_length(str, "base64url") + # 1 char = 1 byte (approx via UTF8 encoding) + "latin1" -> byte_size(str) |> div(1) + "binary" -> String.length(str) + enc when enc in ["utf16le", "ucs2", "ucs-2", "utf-16le"] -> String.length(str) * 2 + # UTF-8 + _ -> byte_size(str) + end + end + + defp buffer_byte_length([{:obj, _} = arr | _]) do + byte_size(extract_buf_bytes(arr)) + end + + defp buffer_byte_length(_), do: 0 + + # ── Instance methods ── + + defp buf_to_string(this, args) do + bytes = extract_buf_bytes(this) + + enc = + case args do + [e | _] when is_binary(e) -> String.downcase(e) + _ -> "utf-8" + end + + start_idx = + case args do + [_, s | _] when is_integer(s) -> max(0, s) + [_, s | _] when is_float(s) -> max(0, trunc(s)) + _ -> 0 + end + + end_idx = + case args do + [_, _, e | _] when is_integer(e) -> min(e, byte_size(bytes)) + [_, _, e | _] when is_float(e) -> min(trunc(e), byte_size(bytes)) + _ -> byte_size(bytes) + end + + slice = + if start_idx < byte_size(bytes) and end_idx > start_idx do + binary_part(bytes, start_idx, end_idx - start_idx) + else + <<>> + end + + case enc do + "hex" -> + Base.encode16(slice, case: :lower) + + "base64" -> + Base.encode64(slice) + + "base64url" -> + Base.url_encode64(slice, padding: false) + + "latin1" -> + Encoding.encode(slice, "latin1") + + "binary" -> + Encoding.encode(slice, "latin1") + + "ascii" -> + Encoding.encode(slice, "ascii") + + enc when enc in ["utf16le", "ucs2", "ucs-2", "utf-16le"] -> + :unicode.characters_to_binary(slice, {:utf16, :little}, :utf8) + + # utf8 — already binary + _ -> + slice + end + end + + defp buf_write(this, args) do + [str, offset_arg, max_len_arg, enc_arg] = argv(args, ["", 0, nil, "utf-8"]) + offset = to_int(offset_arg) + buf_len = get_buf_len(this) + + _max_len = + case max_len_arg do + n when is_integer(n) -> n + n when is_float(n) -> trunc(n) + _ -> buf_len - offset + end + + enc = + case enc_arg do + e when is_binary(e) -> String.downcase(e) + _ -> "utf-8" + end + + str_bin = if is_binary(str), do: str, else: to_string(str) + + write_bytes = + case enc do + "hex" -> Encoding.decode(str_bin, "hex") + "base64" -> Encoding.decode(str_bin, "base64") + "base64url" -> Encoding.decode(str_bin, "base64url") + "latin1" -> Encoding.decode(str_bin, "latin1") + "binary" -> Encoding.decode(str_bin, "latin1") + "ascii" -> Encoding.decode(str_bin, "ascii") + _ -> str_bin + end + + available = max(0, buf_len - offset) + actual_write = min(byte_size(write_bytes), available) + + Enum.each(0..(actual_write - 1), fn i -> + Put.put_element(this, offset + i, :binary.at(write_bytes, i)) + end) + + actual_write + end + + defp buf_slice(this, args) do + bytes = extract_buf_bytes(this) + total = byte_size(bytes) + + start_idx = args |> arg(0, 0) |> normalize_idx(total) + end_idx = args |> arg(1, total) |> normalize_idx(total) + + len = max(0, end_idx - start_idx) + + sliced = + if start_idx <= total and len > 0 do + binary_part(bytes, start_idx, min(len, total - start_idx)) + else + <<>> + end + + wrap_buffer(sliced) + end + + defp buf_copy(this, [target | rest]) do + src = extract_buf_bytes(this) + target_offset = to_int(Enum.at(rest, 0, 0)) + src_start = to_int(Enum.at(rest, 1, 0)) + src_end = to_int(Enum.at(rest, 2, byte_size(src))) + + actual_start = max(0, min(src_start, byte_size(src))) + actual_end = max(actual_start, min(src_end, byte_size(src))) + len = actual_end - actual_start + + Enum.each(0..(len - 1), fn i -> + Put.put_element(target, target_offset + i, :binary.at(src, actual_start + i)) + end) + + len + end + + defp buf_compare_instance(this, [other | rest]) do + a_bytes = extract_buf_bytes(this) + b_bytes = extract_buf_bytes(other) + + b_start = to_int(Enum.at(rest, 0, 0)) + b_end = to_int(Enum.at(rest, 1, byte_size(b_bytes))) + a_start = to_int(Enum.at(rest, 2, 0)) + a_end = to_int(Enum.at(rest, 3, byte_size(a_bytes))) + + a_slice = Encoding.safe_slice(a_bytes, a_start, a_end) + b_slice = Encoding.safe_slice(b_bytes, b_start, b_end) + Encoding.compare(a_slice, b_slice) + end + + defp buf_equals(this, [other | _]) do + extract_buf_bytes(this) == extract_buf_bytes(other) + end + + defp buf_index_of(this, [needle | rest]) do + bytes = extract_buf_bytes(this) + offset = to_int(Enum.at(rest, 0, 0)) + search_from = max(0, min(offset, byte_size(bytes))) + haystack = binary_part(bytes, search_from, byte_size(bytes) - search_from) + + needle_bytes = + case needle do + n when is_integer(n) -> <> + n when is_float(n) -> <> + s when is_binary(s) -> s + {:obj, _} -> extract_buf_bytes(needle) + _ -> <<>> + end + + case :binary.match(haystack, needle_bytes) do + {pos, _} -> pos + search_from + :nomatch -> -1 + end + end + + defp buf_last_index_of(this, [needle | rest]) do + bytes = extract_buf_bytes(this) + offset = to_int(Enum.at(rest, 0, byte_size(bytes))) + search_to = max(0, min(offset, byte_size(bytes))) + haystack = binary_part(bytes, 0, search_to) + + needle_bytes = + case needle do + n when is_integer(n) -> <> + n when is_float(n) -> <> + s when is_binary(s) -> s + {:obj, _} -> extract_buf_bytes(needle) + _ -> <<>> + end + + positions = :binary.matches(haystack, needle_bytes) + + case List.last(positions) do + {pos, _} -> pos + nil -> -1 + end + end + + defp buf_includes(this, [needle | rest]) do + buf_index_of(this, [needle | rest]) != -1 + end + + defp buf_fill(this, args) do + buf_len = get_buf_len(this) + [fill_val, offset_arg, end_arg] = argv(args, [0, 0, buf_len]) + offset = to_int(offset_arg) + end_pos = to_int(end_arg) + + fill_bytes = + case fill_val do + n when is_integer(n) -> <> + n when is_float(n) -> <> + s when is_binary(s) -> if byte_size(s) > 0, do: s, else: <<0>> + _ -> <<0>> + end + + actual_end = min(end_pos, buf_len) + len = max(0, actual_end - offset) + fill_len = byte_size(fill_bytes) + + Enum.each(0..(len - 1), fn i -> + byte = :binary.at(fill_bytes, rem(i, fill_len)) + Put.put_element(this, offset + i, byte) + end) + + this + end + + defp buf_to_json(this) do + bytes = extract_buf_bytes(this) + data = :binary.bin_to_list(bytes) + Heap.wrap(%{"type" => "Buffer", "data" => data}) + end + + defp buf_swap16(this) do + bytes = extract_buf_bytes(this) + len = byte_size(bytes) + if rem(len, 2) != 0, do: JSThrow.range_error!("Buffer size must be a multiple of 16-bits") + + swapped = for <>, into: <<>>, do: <> + + Enum.each(Enum.with_index(:binary.bin_to_list(swapped)), fn {byte, i} -> + Put.put_element(this, i, byte) + end) + + this + end + + defp buf_swap32(this) do + bytes = extract_buf_bytes(this) + len = byte_size(bytes) + if rem(len, 4) != 0, do: JSThrow.range_error!("Buffer size must be a multiple of 32-bits") + + swapped = for <>, into: <<>>, do: <> + + Enum.each(Enum.with_index(:binary.bin_to_list(swapped)), fn {byte, i} -> + Put.put_element(this, i, byte) + end) + + this + end + + defp buf_swap64(this) do + bytes = extract_buf_bytes(this) + len = byte_size(bytes) + if rem(len, 8) != 0, do: JSThrow.range_error!("Buffer size must be a multiple of 64-bits") + + swapped = + for <>, into: <<>>, do: <> + + Enum.each(Enum.with_index(:binary.bin_to_list(swapped)), fn {byte, i} -> + Put.put_element(this, i, byte) + end) + + this + end + + defp buf_read_uint(this, args, size, sign, endian) do + offset = args |> arg(0, 0) |> to_int() + bytes = extract_buf_bytes(this) + + if byte_size(bytes) < offset + size do + JSThrow.range_error!("Attempt to access memory outside buffer bounds") + end + + chunk = binary_part(bytes, offset, size) + BinaryCodec.decode_int(chunk, size, sign, endian) + end + + defp buf_read_float(this, args, size, endian) do + offset = args |> arg(0, 0) |> to_int() + bytes = extract_buf_bytes(this) + + if byte_size(bytes) < offset + size do + JSThrow.range_error!("Attempt to access memory outside buffer bounds") + end + + chunk = binary_part(bytes, offset, size) + BinaryCodec.decode_float(chunk, size, endian) + end + + defp buf_write_uint(this, args, size, sign, endian) do + [val, offset_arg] = argv(args, [0, 0]) + offset = to_int(offset_arg) + n = to_number(val) + encoded = BinaryCodec.encode_int(n, size, sign, endian) + + Enum.each(0..(size - 1), fn i -> + Put.put_element(this, offset + i, :binary.at(encoded, i)) + end) + + offset + size + end + + defp buf_write_float(this, args, size, endian) do + [val, offset_arg] = argv(args, [0, 0]) + offset = to_int(offset_arg) + n = to_float(val) + encoded = BinaryCodec.encode_float(n, size, endian) + + Enum.each(0..(size - 1), fn i -> + Put.put_element(this, offset + i, :binary.at(encoded, i)) + end) + + offset + size + end + + # ── Wrap buffer as Uint8Array-like object ── + + defp wrap_buffer(bytes) when is_binary(bytes) do + uint8_ctor = get_uint8_ctor() + buf_ctor = get_buf_ctor() + buf_proto = Runtime.global_class_proto("Buffer") + + case uint8_ctor do + {:builtin, _, cb} -> + byte_list = :binary.bin_to_list(bytes) + result = cb.([byte_list], nil) + + case result do + {:obj, ref} -> + Heap.update_obj(ref, %{}, fn m -> + base = Map.merge(m, build_instance_methods(ref)) + base = Map.put(base, "__is_buffer__", true) + base = if buf_proto, do: Map.put(base, "__proto__", buf_proto), else: base + if buf_ctor, do: Map.put(base, "constructor", buf_ctor), else: base + end) + + result + + _ -> + result + end + + _ -> + Heap.wrap(%{ + "__buffer__" => bytes, + "byteLength" => byte_size(bytes), + "__is_buffer__" => true + }) + end + end + + defp build_instance_methods(ref), do: buffer_methods({:obj, ref}) + + defp buffer_methods(bound_this) do + %{} + |> Map.merge(receiver_methods(bound_this)) + |> Map.merge(this_methods(bound_this)) + |> Map.merge(integer_read_methods(bound_this)) + |> Map.merge(float_read_methods(bound_this)) + |> Map.merge(integer_write_methods(bound_this)) + |> Map.merge(float_write_methods(bound_this)) + end + + defp receiver_methods(bound_this) do + [ + {"toString", &buf_to_string/2}, + {"write", &buf_write/2}, + {"slice", &buf_slice/2}, + {"subarray", &buf_slice/2}, + {"copy", &buf_copy/2}, + {"compare", &buf_compare_instance/2}, + {"equals", &buf_equals/2}, + {"indexOf", &buf_index_of/2}, + {"lastIndexOf", &buf_last_index_of/2}, + {"includes", &buf_includes/2} + ] + |> Map.new(fn {name, callback} -> {name, receiver_builtin(name, callback, bound_this)} end) + |> Map.put("fill", fill_builtin(bound_this)) + end + + defp this_methods(bound_this) do + [ + {"toJSON", &buf_to_json/1}, + {"swap16", &buf_swap16/1}, + {"swap32", &buf_swap32/1}, + {"swap64", &buf_swap64/1} + ] + |> Map.new(fn {name, callback} -> {name, this_builtin(name, callback, bound_this)} end) + end + + defp integer_read_methods(bound_this) do + [ + {"readUInt8", 1, :unsigned, :big}, + {"readUInt16BE", 2, :unsigned, :big}, + {"readUInt16LE", 2, :unsigned, :little}, + {"readUInt32BE", 4, :unsigned, :big}, + {"readUInt32LE", 4, :unsigned, :little}, + {"readInt8", 1, :signed, :big}, + {"readInt16BE", 2, :signed, :big}, + {"readInt16LE", 2, :signed, :little}, + {"readInt32BE", 4, :signed, :big}, + {"readInt32LE", 4, :signed, :little}, + {"readBigUInt64BE", 8, :unsigned, :big}, + {"readBigUInt64LE", 8, :unsigned, :little}, + {"readBigInt64BE", 8, :signed, :big}, + {"readBigInt64LE", 8, :signed, :little} + ] + |> Map.new(fn {name, size, signed, endian} -> + {name, + receiver_builtin( + name, + fn this, args -> buf_read_uint(this, args, size, signed, endian) end, + bound_this + )} + end) + end + + defp float_read_methods(bound_this) do + [ + {"readFloatBE", 4, :big}, + {"readFloatLE", 4, :little}, + {"readDoubleBE", 8, :big}, + {"readDoubleLE", 8, :little} + ] + |> Map.new(fn {name, size, endian} -> + {name, + receiver_builtin( + name, + fn this, args -> buf_read_float(this, args, size, endian) end, + bound_this + )} + end) + end + + defp integer_write_methods(bound_this) do + [ + {"writeUInt8", 1, :unsigned, :big}, + {"writeUInt16BE", 2, :unsigned, :big}, + {"writeUInt16LE", 2, :unsigned, :little}, + {"writeUInt32BE", 4, :unsigned, :big}, + {"writeUInt32LE", 4, :unsigned, :little}, + {"writeInt8", 1, :signed, :big}, + {"writeInt16BE", 2, :signed, :big}, + {"writeInt16LE", 2, :signed, :little}, + {"writeInt32BE", 4, :signed, :big}, + {"writeInt32LE", 4, :signed, :little} + ] + |> Map.new(fn {name, size, signed, endian} -> + {name, + receiver_builtin( + name, + fn this, args -> buf_write_uint(this, args, size, signed, endian) end, + bound_this + )} + end) + end + + defp float_write_methods(bound_this) do + [ + {"writeFloatBE", 4, :big}, + {"writeFloatLE", 4, :little}, + {"writeDoubleBE", 8, :big}, + {"writeDoubleLE", 8, :little} + ] + |> Map.new(fn {name, size, endian} -> + {name, + receiver_builtin( + name, + fn this, args -> buf_write_float(this, args, size, endian) end, + bound_this + )} + end) + end + + defp receiver_builtin(name, callback, bound_this) do + {:builtin, name, fn args, this -> callback.(bound_this || this, args) end} + end + + defp this_builtin(name, callback, bound_this) do + {:builtin, name, fn _args, this -> callback.(bound_this || this) end} + end + + defp fill_builtin(bound_this) do + {:builtin, "fill", + fn args, this -> + this = bound_this || this + buf_fill(this, args) + this + end} + end + + defp get_uint8_ctor, do: Runtime.global_constructor("Uint8Array") + + defp get_buf_ctor, do: Runtime.global_constructor("Buffer") + + # ── Extract raw bytes from various sources ── + + @doc "Extracts raw bytes from a Buffer-like VM value." + def extract_buf_bytes({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + m when is_map(m) -> + cond do + Map.has_key?(m, "__typed_array__") -> + case Map.get(m, "buffer") do + {:obj, buf_ref} -> + case Heap.get_obj(buf_ref, %{}) do + bm when is_map(bm) -> + ab_buf = Map.get(bm, "__buffer__", <<>>) + offset = Map.get(m, "byteOffset", 0) + byte_len = Map.get(m, "byteLength", 0) + + if byte_size(ab_buf) >= offset + byte_len and byte_len > 0 do + binary_part(ab_buf, offset, byte_len) + else + Map.get(m, "__buffer__", <<>>) + end + + _ -> + <<>> + end + + _ -> + Map.get(m, "__buffer__", <<>>) + end + + Map.has_key?(m, "__buffer__") -> + Map.get(m, "__buffer__", <<>>) + + true -> + len = Map.get(m, "length", 0) |> to_int() + + array_like_to_bytes(m, len) + end + + list when is_list(list) -> + list_to_bytes_raw(list) + + _ -> + <<>> + end + end + + def extract_buf_bytes(b) when is_binary(b), do: b + def extract_buf_bytes({:bytes, b}) when is_binary(b), do: b + + def extract_buf_bytes(list) when is_list(list), do: list_to_bytes_raw(list) + + def extract_buf_bytes(_), do: <<>> + + defp get_obj_type({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + {:qb_arr, _} -> + :array_like + + m when is_map(m) -> + cond do + Map.has_key?(m, "__typed_array__") -> :typed_array + Map.has_key?(m, "__buffer__") -> :array_buffer + Map.get(m, "type") == "Buffer" and Map.has_key?(m, "data") -> :json_buffer + true -> :array_like + end + + _ -> + :other + end + end + + defp extract_ab({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + m when is_map(m) -> Map.get(m, "__buffer__", <<>>) + _ -> <<>> + end + end + + defp extract_typed_bytes({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + m when is_map(m) -> + case Map.get(m, "buffer") do + {:obj, buf_ref} -> + case Heap.get_obj(buf_ref, %{}) do + bm when is_map(bm) -> + ab = Map.get(bm, "__buffer__", <<>>) + offset = Map.get(m, "byteOffset", 0) + byte_len = Map.get(m, "byteLength", 0) + + if byte_size(ab) >= offset + byte_len and byte_len > 0 do + binary_part(ab, offset, byte_len) + else + <<>> + end + + _ -> + <<>> + end + + _ -> + len = Map.get(m, "length", 0) |> to_int() + + array_like_to_bytes(m, len) + end + + _ -> + <<>> + end + end + + defp list_to_bytes({:obj, _} = arr) do + items = Heap.to_list(arr) + list_to_bytes_raw(items) + end + + defp list_to_bytes(list) when is_list(list), do: list_to_bytes_raw(list) + defp list_to_bytes(_), do: <<>> + + defp list_to_bytes_raw(list) do + for value <- list, into: <<>>, do: <> + end + + defp array_like_to_bytes(_map, len) when len <= 0, do: <<>> + + defp array_like_to_bytes(map, len) do + for index <- 0..(len - 1), into: <<>>, do: <> + end + + defp byte_value(n) when is_integer(n), do: band(n, 0xFF) + defp byte_value(n) when is_float(n), do: band(trunc(n), 0xFF) + defp byte_value(_), do: 0 + + # ── Encoding helpers ── + + defp normalize_idx(v, total) when is_integer(v) do + if v < 0, do: max(0, total + v), else: min(v, total) + end + + defp normalize_idx(v, total) when is_float(v), do: normalize_idx(trunc(v), total) + defp normalize_idx(:undefined, total), do: total + defp normalize_idx(nil, total), do: total + defp normalize_idx(_, _), do: 0 + + defp get_buf_len(this) do + case Get.get(this, "length") do + n when is_integer(n) -> n + n when is_float(n) -> trunc(n) + _ -> 0 + end + end + + defp get_encoding(list, skip) do + case Enum.at(list, skip) do + e when is_binary(e) -> String.downcase(e) + _ -> "utf-8" + end + end + + defp to_int(n) when is_integer(n), do: n + defp to_int(n) when is_float(n), do: trunc(n) + defp to_int(:undefined), do: 0 + defp to_int(nil), do: 0 + defp to_int(_), do: 0 + + defp to_number(n) when is_integer(n), do: n + defp to_number(n) when is_float(n), do: n + defp to_number(_), do: 0 + + defp to_float(n) when is_float(n), do: n + defp to_float(n) when is_integer(n), do: n * 1.0 + defp to_float(_), do: 0.0 +end diff --git a/lib/quickbeam/vm/runtime/web/buffer/binary_codec.ex b/lib/quickbeam/vm/runtime/web/buffer/binary_codec.ex new file mode 100644 index 000000000..2e255d854 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/buffer/binary_codec.ex @@ -0,0 +1,87 @@ +defmodule QuickBEAM.VM.Runtime.Web.Buffer.BinaryCodec do + @moduledoc "Integer and float binary codecs for Buffer read/write methods." + + import Bitwise + + @doc "Decodes an integer from a Buffer byte chunk using the requested signedness and endian mode." + def decode_int(chunk, size, :unsigned, :big) do + <> = chunk + value + end + + def decode_int(chunk, size, :signed, :big) do + <> = chunk + value + end + + def decode_int(chunk, size, :unsigned, :little) do + <> = chunk + value + end + + def decode_int(chunk, size, :signed, :little) do + <> = chunk + value + end + + @doc "Encodes an integer for Buffer writes using the requested signedness and endian mode." + def encode_int(value, size, :unsigned, :big) do + int_value = band(trunc(value), max_uint(size)) + <> + end + + def encode_int(value, size, :signed, :big) do + int_value = to_signed(trunc(value), size) + <> + end + + def encode_int(value, size, :unsigned, :little) do + int_value = band(trunc(value), max_uint(size)) + <> + end + + def encode_int(value, size, :signed, :little) do + int_value = to_signed(trunc(value), size) + <> + end + + @doc "Decodes a 32-bit or 64-bit float from a Buffer byte chunk." + def decode_float(chunk, 4, :big) do + <> = chunk + value + end + + def decode_float(chunk, 4, :little) do + <> = chunk + value + end + + def decode_float(chunk, 8, :big) do + <> = chunk + value + end + + def decode_float(chunk, 8, :little) do + <> = chunk + value + end + + @doc "Encodes a 32-bit or 64-bit float for Buffer writes." + def encode_float(value, 4, :big), do: <> + def encode_float(value, 4, :little), do: <> + def encode_float(value, 8, :big), do: <> + def encode_float(value, 8, :little), do: <> + + defp max_uint(1), do: 0xFF + defp max_uint(2), do: 0xFFFF + defp max_uint(4), do: 0xFFFFFFFF + + defp to_signed(value, bytes) do + bits = bytes * 8 + max_positive = 1 <<< (bits - 1) + modulus = 1 <<< bits + value = rem(value, modulus) + value = if value < 0, do: value + modulus, else: value + if value >= max_positive, do: value - modulus, else: value + end +end diff --git a/lib/quickbeam/vm/runtime/web/buffer/encoding.ex b/lib/quickbeam/vm/runtime/web/buffer/encoding.ex new file mode 100644 index 000000000..1be4af268 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/buffer/encoding.ex @@ -0,0 +1,122 @@ +defmodule QuickBEAM.VM.Runtime.Web.Buffer.Encoding do + @moduledoc "Encoding helpers for Node-compatible Buffer operations." + + import Bitwise + + @doc "Decodes a JavaScript Buffer string input using a Node-compatible encoding name." + def decode(str, "hex"), do: hex_decode(str) + def decode(str, "base64"), do: base64_decode(str) + def decode(str, "base64url"), do: base64url_decode(str) + def decode(str, encoding) when encoding in ["latin1", "binary"], do: latin1_to_bytes(str) + def decode(str, "ascii"), do: ascii_bytes(str) + + def decode(str, encoding) when encoding in ["utf16le", "ucs2", "ucs-2", "utf-16le"], + do: utf16le_encode(str) + + def decode(str, _encoding), do: str + + @doc "Encodes Buffer bytes as a JavaScript string using a Node-compatible encoding name." + def encode(bytes, encoding) when encoding in ["latin1", "binary"], do: bytes_to_latin1(bytes) + def encode(bytes, "ascii"), do: bytes_to_ascii(bytes) + def encode(bytes, "hex"), do: Base.encode16(bytes, case: :lower) + def encode(bytes, "base64"), do: Base.encode64(bytes) + def encode(bytes, "base64url"), do: Base.url_encode64(bytes, padding: false) + def encode(bytes, _encoding), do: bytes + + @doc "Returns the byte length of a string under a Node-compatible Buffer encoding." + def byte_length(str, "base64"), do: base64_byte_length(str) + def byte_length(str, "base64url"), do: base64url_byte_length(str) + def byte_length(str, encoding) when encoding in ["hex"], do: div(byte_size(str), 2) + + def byte_length(str, encoding) when encoding in ["utf16le", "ucs2", "ucs-2", "utf-16le"], + do: byte_size(utf16le_encode(str)) + + def byte_length(str, _encoding), do: byte_size(str) + + @doc "Repeats a string pattern into a binary of exactly `n` bytes." + def fill(n, pattern) do + pat_bytes = latin1_to_bytes(pattern) + pat_len = byte_size(pat_bytes) + + if pat_len == 0 do + :binary.copy(<<0>>, n) + else + pat_bytes + |> :binary.copy(div(n + pat_len - 1, pat_len)) + |> binary_part(0, n) + end + end + + @doc "Compares two binaries using Buffer comparison ordering." + def compare(a, b) when a < b, do: -1 + def compare(a, b) when a > b, do: 1 + def compare(a, a), do: 0 + def compare(a, b) when a == b, do: 0 + + @doc "Slices a binary after clamping start and end offsets to valid bounds." + def safe_slice(bytes, start_i, end_i) do + total = byte_size(bytes) + start = max(0, min(start_i, total)) + stop = max(start, min(end_i, total)) + binary_part(bytes, start, stop - start) + end + + defp hex_decode(str) do + str + |> even_bytes() + |> Base.decode16(case: :mixed) + |> decoded_or_empty() + end + + defp even_bytes(str) do + len = byte_size(str) + binary_part(str, 0, len - rem(len, 2)) + end + + defp base64_decode(str) do + str + |> Base.decode64(ignore: :whitespace, padding: false) + |> decoded_or_empty() + end + + defp base64url_decode(str) do + str + |> Base.url_decode64(ignore: :whitespace, padding: false) + |> decoded_or_empty() + end + + defp decoded_or_empty({:ok, bytes}), do: bytes + defp decoded_or_empty(:error), do: <<>> + + defp latin1_to_bytes(str) do + for <>, into: <<>>, do: <> + end + + defp ascii_bytes(str) do + for <>, into: <<>>, do: <> + end + + defp utf16le_encode(str), do: :unicode.characters_to_binary(str, :utf8, {:utf16, :little}) + + defp bytes_to_latin1(bytes) do + for <>, into: "" do + if byte < 128, do: <>, else: <> + end + end + + defp bytes_to_ascii(bytes) do + for <>, into: <<>>, do: <> + end + + defp base64_byte_length(str) do + str + |> base64_decode() + |> byte_size() + end + + defp base64url_byte_length(str) do + str + |> base64url_decode() + |> byte_size() + end +end diff --git a/lib/quickbeam/vm/runtime/web/callback.ex b/lib/quickbeam/vm/runtime/web/callback.ex new file mode 100644 index 000000000..6e3632dfd --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/callback.ex @@ -0,0 +1,19 @@ +defmodule QuickBEAM.VM.Runtime.Web.Callback do + @moduledoc "Callback invocation helpers for Web API event listeners and user-provided handlers." + + alias QuickBEAM.VM.Invocation + + @doc "Invokes a JavaScript callback with optional arguments and receiver." + def invoke(callback, args \\ [], receiver \\ :undefined) do + Invocation.invoke_with_receiver(callback, args, receiver) + end + + @doc "Invokes a callback and suppresses thrown Elixir or JavaScript errors." + def safe_invoke(callback, args \\ [], receiver \\ :undefined) do + invoke(callback, args, receiver) + rescue + _ -> :ok + catch + _, _ -> :ok + end +end diff --git a/lib/quickbeam/vm/runtime/web/compression.ex b/lib/quickbeam/vm/runtime/web/compression.ex new file mode 100644 index 000000000..c3add9c44 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/compression.ex @@ -0,0 +1,216 @@ +defmodule QuickBEAM.VM.Runtime.Web.Compression do + @moduledoc "compression global object and CompressionStream/DecompressionStream for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, argv: 2, object: 1] + + alias QuickBEAM.VM.{Heap, JSThrow} + alias QuickBEAM.VM.Runtime.Web.BinaryData + alias QuickBEAM.VM.Runtime.Web.Buffer + alias QuickBEAM.VM.Runtime.Web.IteratorResult + alias QuickBEAM.VM.Runtime.WebAPIs + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{ + "compression" => build_compression_global(), + "CompressionStream" => WebAPIs.register("CompressionStream", &build_compression_stream/2), + "DecompressionStream" => + WebAPIs.register("DecompressionStream", &build_decompression_stream/2) + } + end + + defp build_compression_global do + object do + method "compress" do + [format, data] = argv(args, [nil, nil]) + format_str = to_string(format) + validate_format!(format_str) + bytes = Buffer.extract_buf_bytes(data) + + result = + try do + QuickBEAM.Compression.compress([format_str, bytes]) + rescue + e -> JSThrow.type_error!(Exception.message(e)) + end + + bytes_to_uint8(result) + end + + method "decompress" do + [format, data] = argv(args, [nil, nil]) + format_str = to_string(format) + validate_format!(format_str) + bytes = Buffer.extract_buf_bytes(data) + + result = + try do + QuickBEAM.Compression.decompress([format_str, bytes]) + rescue + e -> JSThrow.type_error!(Exception.message(e)) + end + + bytes_to_uint8(result) + end + end + end + + defp build_compression_stream([format | _], _this) do + format_str = to_string(format) + validate_format!(format_str) + + chunks_ref = make_ref() + Heap.put_obj(chunks_ref, %{chunks: [], closed: false}) + + controller = build_transform_controller(chunks_ref, format_str, :compress) + {readable, writable} = build_transform_streams(chunks_ref, format_str, :compress, controller) + + Heap.wrap(%{"readable" => readable, "writable" => writable}) + end + + defp build_compression_stream([], _this) do + JSThrow.type_error!("CompressionStream requires a format argument") + end + + defp build_decompression_stream([format | _], _this) do + format_str = to_string(format) + validate_format!(format_str) + + chunks_ref = make_ref() + Heap.put_obj(chunks_ref, %{chunks: [], closed: false}) + + controller = build_transform_controller(chunks_ref, format_str, :decompress) + + {readable, writable} = + build_transform_streams(chunks_ref, format_str, :decompress, controller) + + Heap.wrap(%{"readable" => readable, "writable" => writable}) + end + + defp build_decompression_stream([], _this) do + JSThrow.type_error!("DecompressionStream requires a format argument") + end + + defp build_transform_controller(chunks_ref, _format, _op) do + Heap.wrap(%{ + "enqueue" => + {:builtin, "enqueue", + fn [chunk | _], _ -> + state = Heap.get_obj(chunks_ref, %{}) + chunks = Map.get(state, :chunks, []) + Heap.put_obj(chunks_ref, Map.put(state, :chunks, chunks ++ [chunk])) + :undefined + end}, + "terminate" => + {:builtin, "terminate", + fn _, _ -> + state = Heap.get_obj(chunks_ref, %{}) + Heap.put_obj(chunks_ref, Map.put(state, :closed, true)) + :undefined + end} + }) + end + + defp build_transform_streams(chunks_ref, format, op, _controller) do + alias QuickBEAM.VM.PromiseState + + writable = + object do + method "getWriter" do + object do + method "write" do + chunk = arg(args, 0, nil) + bytes = Buffer.extract_buf_bytes(chunk) + + transformed = + case op do + :compress -> + {:bytes, b} = QuickBEAM.Compression.compress([format, bytes]) + b + + :decompress -> + {:bytes, b} = QuickBEAM.Compression.decompress([format, bytes]) + b + end + + state = Heap.get_obj(chunks_ref, %{}) + existing = Map.get(state, :chunks, []) + Heap.put_obj(chunks_ref, Map.put(state, :chunks, existing ++ [transformed])) + PromiseState.resolved(:undefined) + end + + method "close" do + state = Heap.get_obj(chunks_ref, %{}) + Heap.put_obj(chunks_ref, Map.put(state, :closed, true)) + PromiseState.resolved(:undefined) + end + + method "abort" do + PromiseState.resolved(:undefined) + end + + method "releaseLock" do + :undefined + end + end + end + + method "abort" do + PromiseState.resolved(:undefined) + end + end + + readable = + object do + method "getReader" do + object do + method "read" do + state = Heap.get_obj(chunks_ref, %{}) + chunks = Map.get(state, :chunks, []) + + case chunks do + [chunk | rest] -> + Heap.put_obj(chunks_ref, Map.put(state, :chunks, rest)) + + val = + case chunk do + b when is_binary(b) -> bytes_to_uint8({:bytes, b}) + _ -> chunk + end + + IteratorResult.resolved_value(val) + + [] -> + if Map.get(state, :closed, false) do + IteratorResult.resolved_done() + else + IteratorResult.resolved_done() + end + end + end + + method "releaseLock" do + :undefined + end + + method "cancel" do + PromiseState.resolved(:undefined) + end + end + end + end + + {readable, writable} + end + + defp validate_format!("gzip"), do: :ok + defp validate_format!("deflate"), do: :ok + defp validate_format!("deflate-raw"), do: :ok + defp validate_format!(fmt), do: JSThrow.type_error!("Unsupported compression format: #{fmt}") + + defp bytes_to_uint8({:bytes, bytes}), do: bytes_to_uint8(bytes) + + defp bytes_to_uint8(bytes) when is_binary(bytes), do: BinaryData.uint8_array(bytes) +end diff --git a/lib/quickbeam/vm/runtime/web/console_api.ex b/lib/quickbeam/vm/runtime/web/console_api.ex new file mode 100644 index 000000000..d7c4d9f07 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/console_api.ex @@ -0,0 +1,233 @@ +defmodule QuickBEAM.VM.Runtime.Web.ConsoleAPI do + @moduledoc "Enhanced console object with Logger-based output for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + require Logger + + import QuickBEAM.VM.Builtin, only: [arg: 3, object: 1] + + alias QuickBEAM.VM.{Heap, Runtime} + + @timer_key :qb_console_timers + @count_key :qb_console_counts + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{"console" => console_object()} + end + + defp console_object do + object do + method "log" do + msg = format_args(args) + Logger.info(msg) + :undefined + end + + method "info" do + msg = format_args(args) + Logger.info(msg) + :undefined + end + + method "warn" do + msg = format_args(args) + Logger.warning(msg) + :undefined + end + + method "error" do + msg = format_args(args) + Logger.error(msg) + :undefined + end + + method "debug" do + msg = format_args(args) + Logger.info(msg) + :undefined + end + + method "trace" do + msg = format_args(args) + Logger.debug("Trace: #{msg}") + :undefined + end + + method "assert" do + case args do + [cond_val | rest] -> + falsy = + cond_val == false or cond_val == nil or cond_val == :undefined or cond_val == 0 or + cond_val == "" + + if falsy do + msg = if rest == [], do: "", else: format_args(rest) + Logger.error("Assertion failed: #{msg}") + end + + _ -> + Logger.error("Assertion failed:") + end + + :undefined + end + + method "time" do + label = + case args do + [l | _] when is_binary(l) -> l + _ -> "default" + end + + timers = Process.get(@timer_key, %{}) + Process.put(@timer_key, Map.put(timers, label, System.monotonic_time(:millisecond))) + :undefined + end + + method "timeEnd" do + label = + case args do + [l | _] when is_binary(l) -> l + _ -> "default" + end + + timers = Process.get(@timer_key, %{}) + now = System.monotonic_time(:millisecond) + + case Map.get(timers, label) do + nil -> + Logger.warning("Timer '#{label}' does not exist") + + start -> + elapsed = now - start + Logger.info("#{label}: #{elapsed}ms") + Process.put(@timer_key, Map.delete(timers, label)) + end + + :undefined + end + + method "timeLog" do + label = + case args do + [l | _] when is_binary(l) -> l + _ -> "default" + end + + timers = Process.get(@timer_key, %{}) + now = System.monotonic_time(:millisecond) + + case Map.get(timers, label) do + nil -> + Logger.warning("Timer '#{label}' does not exist") + + start -> + elapsed = now - start + Logger.info("#{label}: #{elapsed}ms") + end + + :undefined + end + + method "count" do + label = + case args do + [l | _] when is_binary(l) -> l + [:undefined | _] -> "default" + [nil | _] -> "default" + _ -> "default" + end + + counts = Process.get(@count_key, %{}) + n = Map.get(counts, label, 0) + 1 + Process.put(@count_key, Map.put(counts, label, n)) + Logger.info("#{label}: #{n}") + :undefined + end + + method "countReset" do + label = + case args do + [l | _] when is_binary(l) -> l + _ -> "default" + end + + counts = Process.get(@count_key, %{}) + + if Map.has_key?(counts, label) do + Process.put(@count_key, Map.put(counts, label, 0)) + else + Logger.warning("Count for '#{label}' does not exist") + end + + :undefined + end + + method "dir" do + obj = arg(args, 0, :undefined) + json = inspect_js_value(obj) + Logger.info(json) + :undefined + end + + method "table" do + obj = arg(args, 0, :undefined) + Logger.info(inspect_js_value(obj)) + :undefined + end + + method "group" do + label = format_args(args) + Logger.info("group: #{label}") + :undefined + end + + method "groupCollapsed" do + label = format_args(args) + Logger.info("group: #{label}") + :undefined + end + + method "groupEnd" do + Logger.info("groupEnd") + :undefined + end + + method "clear" do + :undefined + end + + method "profile" do + :undefined + end + + method "profileEnd" do + :undefined + end + end + end + + defp format_args([]), do: "" + defp format_args(args), do: Enum.map_join(args, " ", &Runtime.stringify/1) + + defp inspect_js_value(val) do + case val do + {:obj, ref} -> + case Heap.get_obj(ref, %{}) do + m when is_map(m) -> + m + |> Enum.filter(fn {k, _v} -> is_binary(k) end) + |> Enum.map_join(",\n ", fn {k, v} -> "\"#{k}\": #{Runtime.stringify(v)}" end) + |> then(fn content -> "{\n #{content}\n}" end) + + _ -> + Runtime.stringify(val) + end + + _ -> + Runtime.stringify(val) + end + end +end diff --git a/lib/quickbeam/vm/runtime/web/crypto.ex b/lib/quickbeam/vm/runtime/web/crypto.ex new file mode 100644 index 000000000..f9f4e4175 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/crypto.ex @@ -0,0 +1,63 @@ +defmodule QuickBEAM.VM.Runtime.Web.Crypto do + @moduledoc "crypto object builtin for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import Bitwise + import QuickBEAM.VM.Builtin, only: [arg: 3, object: 1] + + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.ObjectModel.{Get, Put} + alias QuickBEAM.VM.Runtime.Web.SubtleCrypto + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{"crypto" => crypto_object()} + end + + defp crypto_object do + object do + method "getRandomValues" do + arr = arg(args, 0, nil) + + len = + case Get.get(arr, "length") do + n when is_integer(n) -> n + n when is_float(n) -> trunc(n) + _ -> 0 + end + + if len > 65_536 do + JSThrow.type_error!( + "Failed to execute 'getRandomValues' on 'Crypto': The ArrayBufferView's byte length (#{len}) exceeds the number of bytes of entropy available via this API (65_536)." + ) + end + + if len > 0 do + bytes = :crypto.strong_rand_bytes(len) + + for i <- 0..(len - 1) do + Put.put_element(arr, i, :binary.at(bytes, i)) + end + end + + arr + end + + method "randomUUID" do + <> = + :crypto.strong_rand_bytes(16) + + <> = c + c_fixed = <<(c1 &&& 0x0F) ||| 0x40, c2>> + <> = d + d_fixed = <<(d1 &&& 0x3F) ||| 0x80, d2>> + + [a, b, c_fixed, d_fixed, e] + |> Enum.map_join("-", &Base.encode16(&1, case: :lower)) + end + + prop("subtle", SubtleCrypto.build_subtle()) + end + end +end diff --git a/lib/quickbeam/vm/runtime/web/encoding.ex b/lib/quickbeam/vm/runtime/web/encoding.ex new file mode 100644 index 000000000..ea08d108f --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/encoding.ex @@ -0,0 +1,57 @@ +defmodule QuickBEAM.VM.Runtime.Web.Encoding do + @moduledoc "atob and btoa builtins for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + alias QuickBEAM.VM.Interpreter.Values + alias QuickBEAM.VM.JSThrow + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{ + "btoa" => {:builtin, "btoa", &btoa/2}, + "atob" => {:builtin, "atob", &atob/2} + } + end + + defp btoa([arg | _], _) do + str = Values.stringify(arg) + + if has_non_latin1?(str) do + JSThrow.type_error!( + "Failed to execute 'btoa': The string to be encoded contains characters outside of the Latin1 range." + ) + end + + bytes = for <>, into: <<>>, do: <> + Base.encode64(bytes) + end + + defp atob([arg | _], _) do + if arg == :undefined do + JSThrow.type_error!( + "Failed to execute 'atob': The string to be decoded is not correctly encoded." + ) + end + + str = Values.stringify(arg) + + case Base.decode64(str, ignore: :whitespace, padding: false) do + {:ok, decoded} -> + latin1_to_js_string(decoded) + + :error -> + JSThrow.type_error!( + "Failed to execute 'atob': The string to be decoded is not correctly encoded." + ) + end + end + + defp has_non_latin1?(<<>>), do: false + defp has_non_latin1?(<>) when cp <= 255, do: has_non_latin1?(rest) + defp has_non_latin1?(_), do: true + + defp latin1_to_js_string(binary) do + for <>, into: "", do: <> + end +end diff --git a/lib/quickbeam/vm/runtime/web/event_source_api.ex b/lib/quickbeam/vm/runtime/web/event_source_api.ex new file mode 100644 index 000000000..0f3b87658 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/event_source_api.ex @@ -0,0 +1,362 @@ +defmodule QuickBEAM.VM.Runtime.Web.EventSourceAPI do + @moduledoc "EventSource constructor for BEAM mode — SSE client." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, argv: 2, object: 1] + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Runtime.Web.Callback + alias QuickBEAM.VM.Runtime.WebAPIs + + # readyState values + @connecting 0 + @open 1 + @closed 2 + + @es_sources_key :qb_event_source_sources + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{"EventSource" => WebAPIs.register("EventSource", &build_event_source/2)} + end + + @doc "Drain all pending EventSource messages. Called from drain_pending loop." + def drain_all_event_sources do + sources = Process.get(@es_sources_key, []) + + Enum.each(sources, fn {es_id, state_ref, onopen_ref, onmessage_ref, onerror_ref, + listeners_ref, last_event_id_ref} -> + state = Heap.get_obj(state_ref, %{}) + + unless Map.get(state, :readyState) == @closed do + msgs = drain_sse_messages(es_id, []) + + Enum.each(msgs, fn msg -> + case msg do + {:eventsource_open, ^es_id} -> + Heap.put_obj(state_ref, Map.put(state, :readyState, @open)) + handler = Heap.get_obj(onopen_ref, nil) + event = Heap.wrap(%{"type" => "open"}) + fire_handler(handler, event) + fire_listeners(listeners_ref, "open", event) + + {:eventsource_event, ^es_id, sse_event} -> + event_type = Map.get(sse_event, :type, "message") + data = Map.get(sse_event, :data, "") + event_id = Map.get(sse_event, :id) + + if event_id, do: Heap.put_obj(last_event_id_ref, event_id) + last_id = Heap.get_obj(last_event_id_ref, "") + + event = + Heap.wrap(%{ + "type" => event_type, + "data" => data, + "origin" => "", + "lastEventId" => last_id + }) + + if event_type == "message" do + handler = Heap.get_obj(onmessage_ref, nil) + fire_handler(handler, event) + end + + fire_listeners(listeners_ref, event_type, event) + + {:eventsource_error, ^es_id, _reason} -> + cur_state = Heap.get_obj(state_ref, %{}) + + if Map.get(cur_state, :readyState) != @closed do + handler = Heap.get_obj(onerror_ref, nil) + event = Heap.wrap(%{"type" => "error"}) + fire_handler(handler, event) + fire_listeners(listeners_ref, "error", event) + end + + _ -> + :ok + end + end) + end + end) + end + + defp build_event_source([url | rest], _this) do + url_str = to_string(url) + _opts = Enum.at(rest, 0) + + parent_pid = self() + es_id = make_ref() + + state_ref = make_ref() + Heap.put_obj(state_ref, %{readyState: @connecting}) + + onopen_ref = make_ref() + onmessage_ref = make_ref() + onerror_ref = make_ref() + listeners_ref = make_ref() + + Heap.put_obj(onopen_ref, nil) + Heap.put_obj(onmessage_ref, nil) + Heap.put_obj(onerror_ref, nil) + Heap.put_obj(listeners_ref, %{}) + + last_event_id_ref = make_ref() + Heap.put_obj(last_event_id_ref, "") + + task_pid = QuickBEAM.EventSource.open([url_str, es_id], parent_pid) + + Heap.put_obj(state_ref, %{readyState: @connecting, task_pid: task_pid}) + + sources = Process.get(@es_sources_key, []) + + source = + {es_id, state_ref, onopen_ref, onmessage_ref, onerror_ref, listeners_ref, last_event_id_ref} + + Process.put(@es_sources_key, sources ++ [source]) + + schedule_sse_delivery( + es_id, + state_ref, + onopen_ref, + onmessage_ref, + onerror_ref, + listeners_ref, + last_event_id_ref + ) + + object do + prop("url", url_str) + prop("withCredentials", false) + prop("CONNECTING", @connecting) + prop("OPEN", @open) + prop("CLOSED", @closed) + + method "addEventListener" do + [type, callback] = argv(args, ["message", nil]) + add_listener(listeners_ref, type, callback) + :undefined + end + + method "removeEventListener" do + [type, callback] = argv(args, ["message", nil]) + remove_listener(listeners_ref, type, callback) + :undefined + end + + method "close" do + state = Heap.get_obj(state_ref, %{}) + task_pid = Map.get(state, :task_pid) + if task_pid, do: QuickBEAM.EventSource.close([task_pid]) + Heap.put_obj(state_ref, %{readyState: @closed}) + :undefined + end + + method "dispatchEvent" do + :undefined + end + + accessor "readyState" do + get do + state_ref + |> Heap.get_obj(%{}) + |> Map.get(:readyState, @connecting) + end + end + + accessor "lastEventId" do + get do + Heap.get_obj(last_event_id_ref, "") + end + end + + accessor "onopen" do + get do + Heap.get_obj(onopen_ref, nil) + end + + set do + Heap.put_obj(onopen_ref, arg(args, 0, nil)) + :undefined + end + end + + accessor "onmessage" do + get do + Heap.get_obj(onmessage_ref, nil) + end + + set do + Heap.put_obj(onmessage_ref, arg(args, 0, nil)) + :undefined + end + end + + accessor "onerror" do + get do + Heap.get_obj(onerror_ref, nil) + end + + set do + Heap.put_obj(onerror_ref, arg(args, 0, nil)) + :undefined + end + end + end + end + + defp build_event_source([], _this) do + Heap.wrap(%{}) + end + + defp add_listener(listeners_ref, type, callback) do + type = to_string(type) + listeners = Heap.get_obj(listeners_ref, %{}) + callbacks = Map.get(listeners, type, []) + Heap.put_obj(listeners_ref, Map.put(listeners, type, callbacks ++ [callback])) + end + + defp remove_listener(listeners_ref, type, callback) do + type = to_string(type) + listeners = Heap.get_obj(listeners_ref, %{}) + + callbacks = + listeners + |> Map.get(type, []) + |> Enum.reject(&(&1 == callback)) + + Heap.put_obj(listeners_ref, Map.put(listeners, type, callbacks)) + end + + defp schedule_sse_delivery( + es_id, + state_ref, + onopen_ref, + onmessage_ref, + onerror_ref, + listeners_ref, + last_event_id_ref + ) do + Heap.enqueue_microtask( + {:resolve, nil, + {:builtin, "sse_poll", + fn _, _ -> + poll_sse_messages( + es_id, + state_ref, + onopen_ref, + onmessage_ref, + onerror_ref, + listeners_ref, + last_event_id_ref, + 100 + ) + + :undefined + end}, :undefined} + ) + end + + defp poll_sse_messages( + es_id, + state_ref, + onopen_ref, + onmessage_ref, + onerror_ref, + listeners_ref, + last_event_id_ref, + max_polls + ) do + state = Heap.get_obj(state_ref, %{}) + + if Map.get(state, :readyState) == @closed or max_polls <= 0 do + :done + else + msgs = drain_sse_messages(es_id, []) + + Enum.each(msgs, fn msg -> + case msg do + {:eventsource_open, ^es_id} -> + Heap.put_obj(state_ref, Map.put(state, :readyState, @open)) + handler = Heap.get_obj(onopen_ref, nil) + event = Heap.wrap(%{"type" => "open"}) + fire_handler(handler, event) + fire_listeners(listeners_ref, "open", event) + + {:eventsource_event, ^es_id, sse_event} -> + event_type = Map.get(sse_event, :type, "message") + data = Map.get(sse_event, :data, "") + event_id = Map.get(sse_event, :id) + + if event_id, do: Heap.put_obj(last_event_id_ref, event_id) + last_id = Heap.get_obj(last_event_id_ref, "") + + event = + Heap.wrap(%{ + "type" => event_type, + "data" => data, + "origin" => "", + "lastEventId" => last_id + }) + + if event_type == "message" do + handler = Heap.get_obj(onmessage_ref, nil) + fire_handler(handler, event) + end + + fire_listeners(listeners_ref, event_type, event) + + {:eventsource_error, ^es_id, _reason} -> + new_state = Map.get(state, :readyState, @connecting) + + if new_state != @closed do + handler = Heap.get_obj(onerror_ref, nil) + event = Heap.wrap(%{"type" => "error"}) + fire_handler(handler, event) + fire_listeners(listeners_ref, "error", event) + end + + _ -> + :ok + end + end) + + if msgs != [] do + poll_sse_messages( + es_id, + state_ref, + onopen_ref, + onmessage_ref, + onerror_ref, + listeners_ref, + last_event_id_ref, + max_polls - 1 + ) + end + end + end + + defp drain_sse_messages(es_id, acc) do + receive do + {:eventsource_open, ^es_id} = msg -> drain_sse_messages(es_id, acc ++ [msg]) + {:eventsource_event, ^es_id, _} = msg -> drain_sse_messages(es_id, acc ++ [msg]) + {:eventsource_error, ^es_id, _} = msg -> drain_sse_messages(es_id, acc ++ [msg]) + after + 0 -> acc + end + end + + defp fire_handler(handler, event) when handler not in [nil, :undefined] do + Callback.safe_invoke(handler, [event]) + end + + defp fire_handler(_handler, _event), do: :ok + + defp fire_listeners(listeners_ref, type, event) do + listeners_ref + |> Heap.get_obj(%{}) + |> Map.get(type, []) + |> Enum.each(&Callback.safe_invoke(&1, [event])) + end +end diff --git a/lib/quickbeam/vm/runtime/web/events.ex b/lib/quickbeam/vm/runtime/web/events.ex new file mode 100644 index 000000000..b48e45a81 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/events.ex @@ -0,0 +1,184 @@ +defmodule QuickBEAM.VM.Runtime.Web.Events do + @moduledoc "EventTarget, Event, CustomEvent, and DOMException builtins for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, argv: 2, constructor: 3, object: 1] + + alias QuickBEAM.VM.{Heap, Runtime} + alias QuickBEAM.VM.ObjectModel.Get + alias QuickBEAM.VM.Runtime.Web.{Callback, StateRef} + alias QuickBEAM.VM.Runtime.WebAPIs + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{ + "EventTarget" => WebAPIs.register("EventTarget", &build_event_target/2), + "Event" => WebAPIs.register("Event", &build_event/2), + "CustomEvent" => WebAPIs.register("CustomEvent", &build_custom_event/2), + "DOMException" => build_dom_exception_ctor() + } + end + + @doc "Builds an EventTarget object backed by VM heap state." + def build_event_target(_args, _this) do + listeners_ref = StateRef.new(%{}) + + object do + method "addEventListener" do + [type, callback, opts] = argv(args, [nil, nil, nil]) + add_listener(listeners_ref, type, callback, opts) + :undefined + end + + method "removeEventListener" do + [type, callback] = argv(args, [nil, nil]) + remove_listener(listeners_ref, type, callback) + :undefined + end + + method "dispatchEvent" do + event = arg(args, 0, nil) + dispatch_event(listeners_ref, event) + end + end + end + + defp add_listener(listeners_ref, type, callback, opts) do + type = to_string(type) + entry = %{"callback" => callback, "once" => listener_once?(opts)} + + StateRef.update(listeners_ref, %{}, fn listeners -> + Map.update(listeners, type, [entry], &(&1 ++ [entry])) + end) + end + + defp remove_listener(listeners_ref, type, callback) do + type = to_string(type) + + StateRef.update(listeners_ref, %{}, fn listeners -> + listeners + |> Map.get(type, []) + |> Enum.reject(&(Map.get(&1, "callback") == callback)) + |> then(&Map.put(listeners, type, &1)) + end) + end + + defp dispatch_event(listeners_ref, event) do + type = event |> Get.get("type") |> to_string() + listeners = StateRef.get(listeners_ref, %{}) + type_listeners = Map.get(listeners, type, []) + + {survivors, _stopped?} = + Enum.reduce(type_listeners, {[], false}, fn + entry, {survivors, true} -> + {[entry | survivors], true} + + entry, {survivors, false} -> + callback = Map.get(entry, "callback") + Callback.safe_invoke(callback, [event]) + + keep? = not Map.get(entry, "once", false) + survivors = if keep?, do: [entry | survivors], else: survivors + stopped? = Get.get(event, "__stop_immediate__") == true + {survivors, stopped?} + end) + + StateRef.put(listeners_ref, Map.put(listeners, type, Enum.reverse(survivors))) + Get.get(event, "defaultPrevented") != true + end + + defp listener_once?({:obj, _} = opts), do: Get.get(opts, "once") == true + defp listener_once?(_), do: false + + @doc "Builds an Event object backed by VM heap state." + def build_event(args, _this) do + type = args |> List.first("") |> to_string() + opts = arg(args, 1, nil) + + {bubbles, cancelable} = + case opts do + {:obj, _} -> + b = Get.get(opts, "bubbles") == true + c = Get.get(opts, "cancelable") == true + {b, c} + + _ -> + {false, false} + end + + object do + prop("type", type) + prop("bubbles", bubbles) + prop("cancelable", cancelable) + prop("defaultPrevented", false) + prop("__stop_immediate__", false) + + method "stopPropagation" do + :undefined + end + + method "stopImmediatePropagation" do + put_event_flag(this, "__stop_immediate__", true) + :undefined + end + + method "preventDefault" do + put_event_flag(this, "defaultPrevented", true) + :undefined + end + end + end + + @doc "Builds a CustomEvent object backed by VM heap state." + def build_custom_event(args, this) do + event = build_event(args, this) + + detail = + case arg(args, 1, nil) do + {:obj, _} = opts -> Get.get(opts, "detail") + _ -> nil + end + + {:obj, ref} = event + Heap.update_obj(ref, %{}, fn m -> Map.put(m, "detail", detail) end) + event + end + + @doc "Builds a DOMException object backed by VM heap state." + def build_dom_exception(args, _this) do + message = args |> List.first("") |> to_string() + name = args |> Enum.at(1, "Error") |> to_string() + + dom_exc_proto = get_dom_exception_proto() + + object do + prop("message", message) + prop("name", name) + prop("code", 0) + prop("__proto__", dom_exc_proto) + end + end + + defp put_event_flag({:obj, ref}, key, value) do + Heap.update_obj(ref, %{}, &Map.put(&1, key, value)) + end + + defp put_event_flag(_, _key, _value), do: :ok + + defp build_dom_exception_ctor do + constructor "DOMException", &build_dom_exception/2 do + proto do + extends(build_error_proto()) + end + end + end + + defp get_dom_exception_proto, do: Runtime.global_class_proto("DOMException") + defp build_error_proto, do: Runtime.global_class_proto("Error") + + @doc "Creates a DOMException value with the given name and message." + def make_dom_exception(message, name) do + build_dom_exception([message, name], nil) + end +end diff --git a/lib/quickbeam/vm/runtime/web/fetch.ex b/lib/quickbeam/vm/runtime/web/fetch.ex new file mode 100644 index 000000000..03d8926bd --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/fetch.ex @@ -0,0 +1,666 @@ +defmodule QuickBEAM.VM.Runtime.Web.Fetch do + @moduledoc "fetch, Request, and Response builtins for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, + only: [arg: 3, argv: 2, constructor: 3, object: 1, object: 2] + + alias QuickBEAM.VM.{Heap, JSThrow, PromiseState, Runtime} + alias QuickBEAM.VM.ObjectModel.{Get, Put} + alias QuickBEAM.VM.Runtime.Web.BinaryData + alias QuickBEAM.VM.Runtime.Web.Fetch.JSON + alias QuickBEAM.VM.Runtime.Web.Headers + alias QuickBEAM.VM.Runtime.WebAPIs + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + request_ctor = WebAPIs.register("Request", &build_request/2) + response_ctor = build_response_ctor() + + fetch_fn = + {:builtin, "fetch", + fn args, _ -> + [url_or_req, opts_val] = argv(args, [nil, nil]) + + {url, method, headers_map, body_val, signal} = + extract_fetch_args(url_or_req, opts_val) + + if signal_aborted?(signal) do + reason = Get.get(signal, "reason") + PromiseState.rejected(reason) + else + fetch_id = System.unique_integer([:positive]) + result_ref = make_ref() + Process.put(result_ref, :pending) + + parent = self() + + {actual_body, actual_headers} = prepare_body(body_val, headers_map) + + task_pid = + spawn(fn -> + try do + result = + QuickBEAM.Fetch.fetch([ + %{ + "fetchId" => fetch_id, + "url" => url, + "method" => method, + "headers" => Enum.map(actual_headers, fn {k, v} -> [k, v] end), + "body" => actual_body + } + ]) + + send(parent, {result_ref, {:ok, result}}) + rescue + e -> send(parent, {result_ref, {:error, e}}) + catch + :exit, reason -> send(parent, {result_ref, {:error, reason}}) + end + end) + + if signal != nil do + alias QuickBEAM.VM.Runtime.Web.Abort, as: AbortMod + parent = self() + + AbortMod.add_abort_listener(signal, fn _reason -> + Process.exit(task_pid, :kill) + send(parent, {result_ref, {:aborted, Get.get(signal, "reason")}}) + end) + end + + wait_for_fetch(result_ref, task_pid, signal, response_ctor, 60_000) + end + end} + + Heap.put_ctor_static( + response_ctor, + "json", + {:builtin, "json", + fn args, _ -> + data = arg(args, 0, :undefined) + json_str = JSON.encode(data) + headers = Headers.build_from_map(%{"content-type" => "application/json"}) + build_response_obj(json_str, 200, "OK", headers, response_ctor) + end} + ) + + Heap.put_ctor_static( + response_ctor, + "redirect", + {:builtin, "redirect", + fn args, _ -> + url = args |> arg(0, "") |> to_string() + status = args |> arg(1, 302) |> coerce_int(302) + headers = Headers.build_from_map(%{"location" => url}) + build_response_obj("", status, "", headers, response_ctor) + end} + ) + + Heap.put_ctor_static( + response_ctor, + "error", + {:builtin, "error", + fn _args, _ -> + headers = Headers.build_from_map(%{}) + build_response_obj("", 0, "", headers, response_ctor) + end} + ) + + %{ + "fetch" => fetch_fn, + "Request" => request_ctor, + "Response" => response_ctor + } + end + + defp build_response_ctor do + constructor "Response", &build_response/2 do + proto do + end + end + end + + @doc "Builds a Request object backed by VM heap state." + def build_request(args, _this) do + url_val = arg(args, 0, "") + + {url_str, method, headers_val, body_val} = + case url_val do + {:obj, _} = req_obj -> + u = req_obj |> Get.get("url") |> to_string() + m = req_obj |> Get.get("method") |> coerce_string("GET") + h = Get.get(req_obj, "headers") + b = Get.get(req_obj, "body") + {u, m, h, b} + + _ -> + u = to_string(url_val) + + opts = arg(args, 1, nil) + + {m, h, b} = + case opts do + {:obj, _} -> + method = opts |> Get.get("method") |> coerce_string("GET") + headers = Get.get(opts, "headers") + body = Get.get(opts, "body") + {method, headers, body} + + _ -> + {"GET", nil, nil} + end + + {u, m, h, b} + end + + headers = + case headers_val do + {:obj, _} = h -> Headers.build_from_map(extract_headers_map(h)) + _ -> Headers.build_from_map(%{}) + end + + body_ref = make_ref() + Heap.put_obj(body_ref, %{consumed: false, data: body_val}) + + request_ctor = get_request_ctor() + + object do + prop("url", url_str) + prop("method", method) + prop("headers", headers) + prop("bodyUsed", false) + + method "text" do + consume_body(body_ref, this, fn data -> + case data do + nil -> PromiseState.resolved("") + :undefined -> PromiseState.resolved("") + s when is_binary(s) -> PromiseState.resolved(s) + _ -> PromiseState.resolved(to_string(data)) + end + end) + end + + method "json" do + consume_body(body_ref, this, fn data -> + str = + case data do + nil -> "" + :undefined -> "" + s when is_binary(s) -> s + _ -> to_string(data) + end + + parsed = JSON.parse(str) + PromiseState.resolved(parsed) + end) + end + + method "arrayBuffer" do + consume_body(body_ref, this, fn data -> + bin = + case data do + nil -> "" + :undefined -> "" + s when is_binary(s) -> s + _ -> to_string(data) + end + + buf = make_array_buffer(bin) + PromiseState.resolved(buf) + end) + end + + method "clone" do + body_data = (Heap.get_obj(body_ref, %{}) || %{}) |> Map.get(:data) + new_body_ref = make_ref() + Heap.put_obj(new_body_ref, %{consumed: false, data: body_data}) + + Heap.wrap(build_request_map(url_str, method, headers, new_body_ref, request_ctor)) + end + end + end + + defp build_request_map(url, method, headers, body_ref, request_ctor) do + object heap: false do + prop("url", url) + prop("method", method) + prop("headers", headers) + prop("bodyUsed", false) + prop("constructor", request_ctor) + + method "text" do + consume_body(body_ref, this, fn data -> + case data do + nil -> PromiseState.resolved("") + :undefined -> PromiseState.resolved("") + s when is_binary(s) -> PromiseState.resolved(s) + _ -> PromiseState.resolved(to_string(data)) + end + end) + end + + method "json" do + consume_body(body_ref, this, fn data -> + str = + case data do + nil -> "" + :undefined -> "" + s when is_binary(s) -> s + _ -> to_string(data) + end + + PromiseState.resolved(JSON.parse(str)) + end) + end + + method "arrayBuffer" do + consume_body(body_ref, this, fn data -> + bin = + case data do + nil -> "" + :undefined -> "" + s when is_binary(s) -> s + _ -> to_string(data) + end + + PromiseState.resolved(make_array_buffer(bin)) + end) + end + + method "clone" do + body_data = (Heap.get_obj(body_ref, %{}) || %{}) |> Map.get(:data) + new_body_ref = make_ref() + Heap.put_obj(new_body_ref, %{consumed: false, data: body_data}) + Heap.wrap(build_request_map(url, method, headers, new_body_ref, request_ctor)) + end + end + end + + @doc "Builds a Response object backed by VM heap state." + def build_response(args, _this) do + body = arg(args, 0, "") + + {status, status_text, headers_init} = + case arg(args, 1, nil) do + {:obj, _} = o -> + s = o |> Get.get("status") |> coerce_int(200) + st = o |> Get.get("statusText") |> coerce_string("OK") + h = Get.get(o, "headers") + {s, st, h} + + _ -> + {200, "OK", nil} + end + + headers = + case headers_init do + {:obj, _} = h -> Headers.build_from_map(extract_headers_map(h)) + _ -> Headers.build_from_map(%{}) + end + + response_ctor = get_response_ctor() + build_response_obj(body, status, status_text, headers, response_ctor) + end + + defp build_response_obj(body, status, status_text, headers, response_ctor) do + body_ref = make_ref() + Heap.put_obj(body_ref, %{consumed: false, data: body}) + + object do + prop("status", status) + prop("statusText", status_text) + prop("ok", status >= 200 and status < 300) + prop("headers", headers) + prop("bodyUsed", false) + prop("redirected", false) + prop("url", "") + prop("constructor", response_ctor) + + method "text" do + consume_body(body_ref, this, fn data -> + case data do + nil -> PromiseState.resolved("") + :undefined -> PromiseState.resolved("") + {:bytes, b} when is_binary(b) -> PromiseState.resolved(b) + s when is_binary(s) -> PromiseState.resolved(s) + _ -> PromiseState.resolved(to_string(data)) + end + end) + end + + method "json" do + consume_body(body_ref, this, fn data -> + str = + case data do + nil -> "" + :undefined -> "" + {:bytes, b} when is_binary(b) -> b + s when is_binary(s) -> s + _ -> to_string(data) + end + + parsed = JSON.parse(str) + PromiseState.resolved(parsed) + end) + end + + method "arrayBuffer" do + consume_body(body_ref, this, fn data -> + bin = + case data do + nil -> "" + :undefined -> "" + {:bytes, b} when is_binary(b) -> b + s when is_binary(s) -> s + _ -> to_string(data) + end + + PromiseState.resolved(make_array_buffer(bin)) + end) + end + + method "bytes" do + consume_body(body_ref, this, fn data -> + bin = + case data do + nil -> "" + :undefined -> "" + {:bytes, b} when is_binary(b) -> b + s when is_binary(s) -> s + _ -> to_string(data) + end + + bytes = :binary.bin_to_list(bin) + PromiseState.resolved(Heap.wrap(bytes)) + end) + end + + method "clone" do + body_data = (Heap.get_obj(body_ref, %{}) || %{}) |> Map.get(:data) + new_body_ref = make_ref() + Heap.put_obj(new_body_ref, %{consumed: false, data: body_data}) + build_response_obj(body_data, status, status_text, headers, response_ctor) + end + end + end + + defp consume_body(body_ref, this, fun) do + case Heap.get_obj(body_ref, %{}) do + %{consumed: true} -> + JSThrow.type_error!("Body has already been consumed") + + %{consumed: false, data: data} -> + Heap.put_obj(body_ref, %{consumed: true, data: data}) + Put.put(this, "bodyUsed", true) + fun.(data) + + _ -> + fun.(nil) + end + end + + defp extract_headers_map({:obj, ref}) do + raw = Heap.get_obj(ref, %{}) + + cond do + is_list(raw) -> + raw + |> Enum.flat_map(fn item -> + case item do + {:obj, iref} -> + case Heap.get_obj(iref, []) do + [k, v | _] -> [{Headers.header_name(k), to_string(v)}] + _ -> [] + end + + [k, v | _] -> + [{Headers.header_name(k), to_string(v)}] + + _ -> + [] + end + end) + |> Map.new() + + match?({:qb_arr, _}, raw) -> + Heap.obj_to_list(ref) + |> Enum.flat_map(fn item -> + case item do + {:obj, iref} -> + case Heap.get_obj(iref, []) do + [k, v | _] -> [{Headers.header_name(k), to_string(v)}] + _ -> [] + end + + _ -> + [] + end + end) + |> Map.new() + + is_map(raw) -> + case Map.get(raw, "__store__") do + {:obj, store_ref} -> + case Heap.get_obj(store_ref, %{}) do + m when is_map(m) -> m + _ -> %{} + end + + _ -> + raw + |> Enum.reject(fn {k, _} -> not is_binary(k) or String.starts_with?(k, "__") end) + |> Enum.map(fn {k, v} -> + cond do + is_binary(v) -> {Headers.header_name(k), v} + is_atom(v) -> nil + is_tuple(v) -> nil + true -> {Headers.header_name(k), to_string(v)} + end + end) + |> Enum.reject(&is_nil/1) + |> Map.new() + end + + true -> + %{} + end + end + + defp extract_headers_map(_), do: %{} + + defp get_request_ctor, do: Runtime.global_constructor("Request") + defp get_response_ctor, do: Runtime.global_constructor("Response") + + defp make_array_buffer(data) when is_binary(data), do: BinaryData.array_buffer(data) + + defp coerce_string(:undefined, default), do: default + defp coerce_string(nil, default), do: default + defp coerce_string(s, _) when is_binary(s), do: s + defp coerce_string(v, _), do: to_string(v) + + defp coerce_int(:undefined, default), do: default + defp coerce_int(nil, default), do: default + defp coerce_int(n, _) when is_integer(n), do: n + defp coerce_int(n, _) when is_float(n), do: trunc(n) + defp coerce_int(_, default), do: default + + defp extract_fetch_args(url_or_req, opts_val) do + case url_or_req do + {:obj, _} = req_obj -> + u = req_obj |> Get.get("url") |> to_string() + m = req_obj |> Get.get("method") |> coerce_string("GET") + h_obj = Get.get(req_obj, "headers") + b = Get.get(req_obj, "body") + sig = get_signal_from_opts(opts_val) + {u, m, extract_headers_map(h_obj), coerce_body(b), sig} + + url_val -> + u = to_string(url_val) + + {m, h_obj, b, sig} = + case opts_val do + {:obj, _} -> + method = opts_val |> Get.get("method") |> coerce_string("GET") + headers = Get.get(opts_val, "headers") + body = Get.get(opts_val, "body") + signal = get_signal_from_opts(opts_val) + {method, headers, body, signal} + + _ -> + {"GET", nil, nil, nil} + end + + h_map = if h_obj, do: extract_headers_map(h_obj), else: %{} + {u, m, h_map, coerce_body(b), sig} + end + end + + defp get_signal_from_opts({:obj, _} = opts) do + case Get.get(opts, "signal") do + {:obj, _} = sig -> sig + _ -> nil + end + end + + defp get_signal_from_opts(_), do: nil + + defp signal_aborted?(nil), do: false + defp signal_aborted?(signal), do: signal != nil and Get.get(signal, "aborted") == true + + defp coerce_body(nil), do: nil + defp coerce_body(:undefined), do: nil + defp coerce_body(b) when is_binary(b), do: b + + defp coerce_body({:obj, _} = obj) do + case Heap.get_obj(elem(obj, 1), %{}) do + m when is_map(m) and is_map_key(m, "__fd_ref__") -> + {:form_data, m["__fd_ref__"]} + + m when is_map(m) and is_map_key(m, "size") -> + case Get.get(obj, "text") do + {:builtin, "text", cb} -> + promise = cb.([], obj) + + case promise do + {:obj, pref} -> + case Heap.get_obj(pref, %{}) do + %{"__promise_state__" => :resolved, "__promise_value__" => v} + when is_binary(v) -> + v + + _ -> + "" + end + + v when is_binary(v) -> + v + + _ -> + "" + end + + _ -> + "" + end + + _ -> + inspect(obj) + end + end + + defp coerce_body(_), do: nil + + defp wait_for_fetch(result_ref, task_pid, signal, response_ctor, timeout_ms) do + poll_interval = min(timeout_ms, 10) + + receive do + {^result_ref, {:ok, resp}} -> + build_response_from_fetch(resp, response_ctor) + |> PromiseState.resolved() + + {^result_ref, {:error, error}} -> + err = Heap.make_error("fetch failed: #{inspect(error)}", "TypeError") + PromiseState.rejected(err) + + {^result_ref, {:aborted, reason}} -> + PromiseState.rejected(reason) + after + poll_interval -> + QuickBEAM.VM.Runtime.Web.Timers.drain_timers() + + if signal != nil and signal_aborted?(signal) do + Process.exit(task_pid, :kill) + reason = Get.get(signal, "reason") + PromiseState.rejected(reason) + else + remaining = timeout_ms - poll_interval + + if remaining <= 0 do + Process.exit(task_pid, :kill) + err = Heap.make_error("fetch timed out", "TypeError") + PromiseState.rejected(err) + else + wait_for_fetch(result_ref, task_pid, signal, response_ctor, remaining) + end + end + end + end + + defp prepare_body({:form_data, entries_ref}, headers_map) when is_reference(entries_ref) do + alias QuickBEAM.VM.Runtime.Web.FormData, as: FD + {body, content_type} = FD.encode_multipart(entries_ref) + updated_headers = Map.put(headers_map, "content-type", content_type) + {body, updated_headers} + end + + defp prepare_body(nil, headers_map), do: {nil, headers_map} + + defp prepare_body(body, headers_map) when is_binary(body) do + updated_headers = + if Map.has_key?(headers_map, "content-type") do + headers_map + else + Map.put(headers_map, "content-type", "text/plain;charset=UTF-8") + end + + {body, updated_headers} + end + + defp prepare_body(body, headers_map), do: {to_string(body), headers_map} + + defp build_response_from_fetch( + %{ + "status" => status, + "statusText" => st, + "headers" => resp_headers, + "body" => body, + "url" => url + }, + response_ctor + ) do + headers_map = + resp_headers + |> Enum.map(fn [k, v] -> {Headers.header_name(k), to_string(v)} end) + |> Map.new() + + headers = Headers.build_from_map(headers_map) + status = if is_integer(status), do: status, else: 200 + status_text = to_string(st) + + body_data = + case body do + {:bytes, b} -> b + b when is_binary(b) -> b + _ -> "" + end + + resp = build_response_obj(body_data, status, status_text, headers, response_ctor) + + {:obj, ref} = resp + Heap.update_obj(ref, %{}, fn m -> Map.put(m, "url", url) end) + resp + end +end diff --git a/lib/quickbeam/vm/runtime/web/fetch/json.ex b/lib/quickbeam/vm/runtime/web/fetch/json.ex new file mode 100644 index 000000000..b575171ab --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/fetch/json.ex @@ -0,0 +1,51 @@ +defmodule QuickBEAM.VM.Runtime.Web.Fetch.JSON do + @moduledoc "JSON conversion helpers for Fetch body methods." + + alias QuickBEAM.VM.{Heap, JSThrow} + + @doc "Parses a JSON string into QuickBEAM VM values." + def parse(str) when is_binary(str) do + case Jason.decode(str) do + {:ok, val} -> from_elixir(val) + _ -> JSThrow.syntax_error!("Unexpected token in JSON") + end + end + + @doc "Encodes a QuickBEAM VM value as a JSON string." + def encode(val), do: Jason.encode!(to_elixir(val)) + + defp from_elixir(val) when is_map(val) do + Heap.wrap(Map.new(val, fn {key, value} -> {key, from_elixir(value)} end)) + end + + defp from_elixir(val) when is_list(val), do: Heap.wrap(Enum.map(val, &from_elixir/1)) + defp from_elixir(val), do: val + + defp to_elixir({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> + map + |> Enum.reject(fn {key, _value} -> + not is_binary(key) or String.starts_with?(key, "__") + end) + |> Map.new(fn {key, value} -> {key, to_elixir(value)} end) + + list when is_list(list) -> + Enum.map(list, &to_elixir/1) + + _ -> + nil + end + end + + defp to_elixir(value) when is_binary(value), do: value + defp to_elixir(value) when is_number(value), do: value + defp to_elixir(true), do: true + defp to_elixir(false), do: false + defp to_elixir(nil), do: nil + defp to_elixir(:undefined), do: nil + defp to_elixir(:nan), do: nil + defp to_elixir(:infinity), do: nil + defp to_elixir({:bigint, value}), do: value + defp to_elixir(_), do: nil +end diff --git a/lib/quickbeam/vm/runtime/web/form_data.ex b/lib/quickbeam/vm/runtime/web/form_data.ex new file mode 100644 index 000000000..eadefcf71 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/form_data.ex @@ -0,0 +1,241 @@ +defmodule QuickBEAM.VM.Runtime.Web.FormData do + @moduledoc "FormData constructor builtin for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, argv: 2, iterator_from: 1, object: 1] + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.ObjectModel.Get + alias QuickBEAM.VM.Runtime.Web.Callback + alias QuickBEAM.VM.Runtime.WebAPIs + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{"FormData" => WebAPIs.register("FormData", &build_form_data/2)} + end + + defp build_form_data(_args, _this) do + entries_ref = make_ref() + Heap.put_obj(entries_ref, %{list: []}) + + object do + method "append" do + [name, value, filename] = argv(args, [nil, nil, nil]) + entry = {to_string(name), coerce_entry_value(value, filename)} + save_fd_entries(entries_ref, load_fd_entries(entries_ref) ++ [entry]) + :undefined + end + + method "get" do + name = args |> arg(0, nil) |> to_string() + + case Enum.find(load_fd_entries(entries_ref), fn {key, _value} -> key == name end) do + {_key, value} -> value + nil -> nil + end + end + + method "getAll" do + name = args |> arg(0, nil) |> to_string() + + entries_ref + |> load_fd_entries() + |> Enum.filter(fn {key, _value} -> key == name end) + |> Enum.map(fn {_key, value} -> value end) + |> Heap.wrap() + end + + method "set" do + [name, value, filename] = argv(args, [nil, nil, nil]) + name = to_string(name) + entry = {name, coerce_entry_value(value, filename)} + + entries = + entries_ref + |> load_fd_entries() + |> Enum.reject(fn {key, _value} -> key == name end) + + save_fd_entries(entries_ref, entries ++ [entry]) + :undefined + end + + method "delete" do + name = args |> arg(0, nil) |> to_string() + + entries = + entries_ref + |> load_fd_entries() + |> Enum.reject(fn {key, _value} -> key == name end) + + save_fd_entries(entries_ref, entries) + :undefined + end + + method "has" do + name = args |> arg(0, nil) |> to_string() + Enum.any?(load_fd_entries(entries_ref), fn {key, _value} -> key == name end) + end + + method "forEach" do + callback = arg(args, 0, nil) + + Enum.each(load_fd_entries(entries_ref), fn {key, value} -> + Callback.safe_invoke(callback, [value, key, this]) + end) + + :undefined + end + + method "entries" do + entries_ref + |> load_fd_entries() + |> entry_pairs() + |> iterator_from() + end + + method "keys" do + entries_ref + |> load_fd_entries() + |> Enum.map(&elem(&1, 0)) + |> iterator_from() + end + + method "values" do + entries_ref + |> load_fd_entries() + |> Enum.map(&elem(&1, 1)) + |> iterator_from() + end + + symbol_method "Symbol.iterator" do + entries_ref + |> load_fd_entries() + |> entry_pairs() + |> iterator_from() + end + + prop("__fd_ref__", entries_ref) + end + end + + defp entry_pairs(entries) do + Enum.map(entries, fn {key, value} -> Heap.wrap([key, value]) end) + end + + defp coerce_entry_value(value, filename_override) do + case value do + {:obj, _} = obj -> + if blob_or_file?(obj) do + name = + case filename_override do + nil -> get_file_name(obj) + :undefined -> get_file_name(obj) + n -> to_string(n) + end + + wrap_as_file(obj, name) + else + to_string(value) + end + + _ -> + to_string(value) + end + end + + defp blob_or_file?({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + m when is_map(m) -> Map.has_key?(m, "size") and Map.has_key?(m, "type") + _ -> false + end + end + + defp get_file_name({:obj, _} = obj) do + case Get.get(obj, "name") do + n when is_binary(n) -> n + _ -> "blob" + end + end + + defp wrap_as_file(blob_or_file, name) do + content = get_blob_content(blob_or_file) + mime_type = Get.get(blob_or_file, "type") |> to_string() + parts = Heap.wrap([content]) + opts = Heap.wrap(%{"type" => mime_type}) + QuickBEAM.VM.Runtime.Web.Blob.build_file([parts, name, opts], nil) + end + + defp get_blob_content({:obj, _} = blob) do + case Get.get(blob, "text") do + {:builtin, "text", cb} -> + promise = cb.([], blob) + + case promise do + {:obj, pref} -> + case Heap.get_obj(pref, %{}) do + %{} = m -> + case {Map.get(m, "__promise_state__"), Map.get(m, "__promise_value__")} do + {:resolved, v} when is_binary(v) -> v + _ -> "" + end + + _ -> + "" + end + + v when is_binary(v) -> + v + + _ -> + "" + end + + _ -> + "" + end + end + + @doc "Encodes FormData parts as a multipart/form-data payload." + def encode_multipart(entries_ref) do + fields = + entries_ref + |> load_fd_entries() + |> Enum.map(fn {name, value} -> + case value do + {:obj, _} = obj -> + filename = Get.get(obj, "name") || "blob" + mime = Get.get(obj, "type") || "application/octet-stream" + {name, {get_blob_content(obj), filename: filename, content_type: mime}} + + str when is_binary(str) -> + {name, str} + + other -> + {name, QuickBEAM.VM.Interpreter.Values.stringify(other)} + end + end) + + %{body: body, content_type: content_type} = Req.Utils.encode_form_multipart(fields) + # Capitalize headers to match browser FormData behavior + binary = body |> IO.iodata_to_binary() |> capitalize_multipart_headers() + {binary, content_type} + end + + defp load_fd_entries(ref) do + case Heap.get_obj(ref, %{}) do + %{list: list} when is_list(list) -> list + _ -> [] + end + end + + defp save_fd_entries(ref, entries) do + Heap.put_obj(ref, %{list: entries}) + end + + defp capitalize_multipart_headers(body) do + body + |> String.replace("content-disposition:", "Content-Disposition:") + |> String.replace("content-type:", "Content-Type:") + end +end diff --git a/lib/quickbeam/vm/runtime/web/headers.ex b/lib/quickbeam/vm/runtime/web/headers.ex new file mode 100644 index 000000000..cef97ba11 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/headers.ex @@ -0,0 +1,192 @@ +defmodule QuickBEAM.VM.Runtime.Web.Headers do + @moduledoc "Headers constructor builtin for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, argv: 2, iterator_from: 1, object: 1] + + alias Mint.Core.Headers, as: MintHeaders + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Runtime.Web.Callback + alias QuickBEAM.VM.Runtime.WebAPIs + + @doc "Returns the global binding for the JavaScript `Headers` constructor." + def bindings do + %{"Headers" => WebAPIs.register("Headers", &build_headers/2)} + end + + @doc "Builds a `Headers` object backed by the supplied normalized header map." + def build_from_map(initial_map) do + store_ref = make_ref() + Heap.put_obj(store_ref, initial_map) + + object do + method "get" do + Map.get(load_store_ref(store_ref), header_name(arg(args, 0, nil)), nil) + end + + method "set" do + [name, value] = argv(args, [nil, nil]) + store = Map.put(load_store_ref(store_ref), header_name(name), to_string(value)) + save_store_ref(store_ref, store) + :undefined + end + + method "append" do + [name, value] = argv(args, [nil, nil]) + name = header_name(name) + value = to_string(value) + store = load_store_ref(store_ref) + value = store |> Map.get(name) |> append_header_value(value) + save_store_ref(store_ref, Map.put(store, name, value)) + :undefined + end + + method "delete" do + store = Map.delete(load_store_ref(store_ref), header_name(arg(args, 0, nil))) + save_store_ref(store_ref, store) + :undefined + end + + method "has" do + Map.has_key?(load_store_ref(store_ref), header_name(arg(args, 0, nil))) + end + + method "forEach" do + callback = arg(args, 0, nil) + + Enum.each(sorted_headers(store_ref), fn {name, value} -> + Callback.safe_invoke(callback, [value, name]) + end) + + :undefined + end + + method "entries" do + store_ref + |> sorted_headers() + |> Enum.map(fn {name, value} -> Heap.wrap([name, value]) end) + |> iterator_from() + end + + method "keys" do + store_ref + |> sorted_headers() + |> Enum.map(&elem(&1, 0)) + |> iterator_from() + end + + method "values" do + store_ref + |> sorted_headers() + |> Enum.map(&elem(&1, 1)) + |> iterator_from() + end + + symbol_method "Symbol.iterator" do + store_ref + |> sorted_headers() + |> Enum.map(fn {name, value} -> Heap.wrap([name, value]) end) + |> iterator_from() + end + + prop("__store__", {:obj, store_ref}) + end + end + + defp build_headers(args, _this) do + args + |> List.first() + |> extract_headers_map() + |> build_from_map() + end + + defp extract_headers_map(nil), do: %{} + defp extract_headers_map(:undefined), do: %{} + + defp extract_headers_map({:obj, ref}) do + raw = Heap.get_obj(ref, %{}) + + cond do + is_list(raw) -> + pairs_to_map(raw) + + match?({:qb_arr, _}, raw) -> + ref + |> Heap.obj_to_list() + |> pairs_to_map() + + is_map(raw) -> + case Map.get(raw, "__store__") do + {:obj, store_ref} -> + load_store_ref(store_ref) + + _ -> + raw + |> Enum.reject(fn {key, _value} -> + not is_binary(key) or String.starts_with?(key, "__") + end) + |> Enum.map(fn {key, value} -> {header_name(key), to_string(value)} end) + |> Map.new() + end + + true -> + %{} + end + end + + defp extract_headers_map(_), do: %{} + + defp extract_pair({:obj, ref}) do + list = + case Heap.get_obj(ref, []) do + {:qb_arr, _} -> Heap.obj_to_list(ref) + l when is_list(l) -> l + _ -> [] + end + + case list do + [k, v | _] -> {header_name(k), to_string(v)} + _ -> nil + end + end + + defp extract_pair(list) when is_list(list) do + case list do + [k, v | _] -> {header_name(k), to_string(v)} + _ -> nil + end + end + + defp extract_pair(_), do: nil + + defp pairs_to_map(pairs) do + pairs + |> Enum.map(&extract_pair/1) + |> Enum.reject(&is_nil/1) + |> Map.new() + end + + defp sorted_headers(store_ref) do + store_ref + |> load_store_ref() + |> Enum.sort_by(fn {name, _value} -> name end) + end + + @doc "Normalizes a header name using Mint's ASCII header canonicalization." + def header_name(value), do: value |> to_string() |> MintHeaders.lower_raw() + + defp append_header_value(nil, value), do: value + defp append_header_value(existing, value), do: existing <> ", " <> value + + defp load_store_ref(store_ref) do + case Heap.get_obj(store_ref, %{}) do + m when is_map(m) -> m + _ -> %{} + end + end + + defp save_store_ref(store_ref, store) do + Heap.put_obj(store_ref, store) + end +end diff --git a/lib/quickbeam/vm/runtime/web/iterator_result.ex b/lib/quickbeam/vm/runtime/web/iterator_result.ex new file mode 100644 index 000000000..7dd259d86 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/iterator_result.ex @@ -0,0 +1,15 @@ +defmodule QuickBEAM.VM.Runtime.Web.IteratorResult do + @moduledoc "Constructors for JavaScript iterator result objects and resolved promise wrappers." + + alias QuickBEAM.VM.{Heap, PromiseState} + + @doc "Builds a non-final JavaScript iterator result object for `value`." + def value(value), do: Heap.wrap(%{"value" => value, "done" => false}) + @doc "Builds a final JavaScript iterator result object." + def done, do: Heap.wrap(%{"value" => :undefined, "done" => true}) + + @doc "Builds a resolved promise containing a non-final iterator result." + def resolved_value(value), do: PromiseState.resolved(value(value)) + @doc "Builds a resolved promise containing a final iterator result." + def resolved_done, do: PromiseState.resolved(done()) +end diff --git a/lib/quickbeam/vm/runtime/web/message_channel.ex b/lib/quickbeam/vm/runtime/web/message_channel.ex new file mode 100644 index 000000000..892a7294a --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/message_channel.ex @@ -0,0 +1,258 @@ +defmodule QuickBEAM.VM.Runtime.Web.MessageChannel do + @moduledoc "MessageChannel and MessagePort builtins for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, argv: 2, object: 1, object: 2] + + alias QuickBEAM.VM.{Heap, Runtime} + alias QuickBEAM.VM.ObjectModel.Get + alias QuickBEAM.VM.Runtime.StructuredClone + alias QuickBEAM.VM.Runtime.Web.Callback + alias QuickBEAM.VM.Runtime.WebAPIs + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + port_ctor = WebAPIs.register("MessagePort", &build_port_stub/2) + + channel_ctor = + WebAPIs.register("MessageChannel", fn _args, _this -> build_channel(port_ctor) end) + + %{ + "MessageChannel" => channel_ctor, + "MessagePort" => port_ctor, + "MessageEvent" => build_message_event_ctor() + } + end + + defp build_port_stub(_args, _this), do: build_port_pair_port(make_ref(), make_ref()) + + defp build_channel(port_ctor) do + q1 = make_ref() + q2 = make_ref() + + Heap.put_obj(q1, %{messages: [], closed: false, started: false, handler: nil, listeners: []}) + Heap.put_obj(q2, %{messages: [], closed: false, started: false, handler: nil, listeners: []}) + + port1 = build_port(q1, q2, port_ctor) + port2 = build_port(q2, q1, port_ctor) + + Heap.wrap(%{"port1" => port1, "port2" => port2}) + end + + defp build_port_pair_port(my_q, peer_q) do + Heap.put_obj(my_q, %{messages: [], closed: false, started: false, handler: nil, listeners: []}) + + Heap.put_obj(peer_q, %{ + messages: [], + closed: false, + started: false, + handler: nil, + listeners: [] + }) + + build_port(my_q, peer_q, Runtime.global_constructor("MessagePort")) + end + + defp build_port(my_q, peer_q, port_ctor) do + port_proto = Runtime.global_class_proto("MessagePort") + + object heap: false do + prop("constructor", port_ctor) + + method "postMessage" do + data = arg(args, 0, :undefined) + state = Heap.get_obj(my_q, %{}) + + unless Map.get(state, :closed, false) do + peer_state = Heap.get_obj(peer_q, %{}) + + unless Map.get(peer_state, :closed, false) do + data |> StructuredClone.clone() |> then(&deliver_or_queue(peer_q, &1)) + end + end + + :undefined + end + + method "start" do + state = Heap.get_obj(my_q, %{}) + Heap.put_obj(my_q, %{state | started: true}) + drain_queue(my_q) + :undefined + end + + method "close" do + state = Heap.get_obj(my_q, %{}) + Heap.put_obj(my_q, %{state | closed: true}) + :undefined + end + + method "addEventListener" do + [type, callback, opts] = argv(args, [nil, nil, nil]) + + if to_string(type) == "message" do + state = Heap.get_obj(my_q, %{}) + listeners = Map.get(state, :listeners, []) + listener = %{callback: callback, once: listener_once?(opts)} + Heap.put_obj(my_q, Map.put(state, :listeners, listeners ++ [listener])) + end + + :undefined + end + + method "removeEventListener" do + [type, callback] = argv(args, [nil, nil]) + + if to_string(type) == "message" do + state = Heap.get_obj(my_q, %{}) + listeners = Map.get(state, :listeners, []) + updated = Enum.reject(listeners, &(Map.get(&1, :callback) == callback)) + Heap.put_obj(my_q, Map.put(state, :listeners, updated)) + end + + :undefined + end + + method "dispatchEvent" do + :undefined + end + + accessor "onmessage" do + get do + my_q |> Heap.get_obj(%{}) |> Map.get(:handler, nil) + end + + set do + state = Heap.get_obj(my_q, %{}) + Heap.put_obj(my_q, %{state | handler: arg(args, 0, nil), started: true}) + drain_queue(my_q) + :undefined + end + end + + accessor "onmessageerror" do + get do + my_q |> Heap.get_obj(%{}) |> Map.get(:error_handler, nil) + end + + set do + state = Heap.get_obj(my_q, %{}) + Heap.put_obj(my_q, Map.put(state, :error_handler, arg(args, 0, nil))) + :undefined + end + end + end + |> QuickBEAM.VM.Builtin.put_if_present("__proto__", port_proto) + |> Heap.wrap() + end + + defp listener_once?({:obj, _} = opts), do: Get.get(opts, "once") == true + defp listener_once?(_), do: false + + defp deliver_or_queue(q_ref, data) do + state = Heap.get_obj(q_ref, %{}) + event = make_message_event(data) + + if Map.get(state, :started, false) do + handler = Map.get(state, :handler) + listeners = Map.get(state, :listeners, []) + + dispatch_event(event, handler, listeners, q_ref) + else + messages = Map.get(state, :messages, []) + Heap.put_obj(q_ref, Map.put(state, :messages, messages ++ [data])) + end + end + + defp drain_queue(q_ref) do + state = Heap.get_obj(q_ref, %{}) + messages = Map.get(state, :messages, []) + + if messages != [] and Map.get(state, :started, false) do + handler = Map.get(state, :handler) + listeners = Map.get(state, :listeners, []) + Heap.put_obj(q_ref, Map.put(state, :messages, [])) + + Enum.each(messages, fn data -> + event = make_message_event(data) + dispatch_event(event, handler, listeners, q_ref) + end) + end + end + + defp dispatch_event(event, handler, _listeners, q_ref) do + Heap.enqueue_microtask( + {:resolve, nil, + {:builtin, "deliver", + fn _, _ -> + if handler != nil and handler != :undefined do + Callback.safe_invoke(handler, [event]) + end + + state = Heap.get_obj(q_ref, %{}) + all_listeners = Map.get(state, :listeners, []) + + survivors = + Enum.reject(all_listeners, fn entry -> + entry + |> Map.get(:callback) + |> Callback.safe_invoke([event]) + + Map.get(entry, :once, false) + end) + + Heap.put_obj(q_ref, Map.put(state, :listeners, survivors)) + :undefined + end}, :undefined} + ) + end + + defp make_message_event(data) do + base = %{ + "type" => "message", + "data" => data, + "origin" => "", + "lastEventId" => "", + "source" => nil, + "ports" => [] + } + + me_ctor = Runtime.global_constructor("MessageEvent") + + base = + if me_ctor do + base + |> Map.put("constructor", me_ctor) + |> QuickBEAM.VM.Builtin.put_if_present( + "__proto__", + Runtime.global_class_proto("MessageEvent") + ) + else + base + end + + Heap.wrap(base) + end + + defp build_message_event_ctor do + WebAPIs.register("MessageEvent", fn args, _this -> + [type, opts] = argv(args, ["message", nil]) + + data = + case opts do + {:obj, _} -> Get.get(opts, "data") + _ -> :undefined + end + + object do + prop("type", to_string(type)) + prop("data", data) + prop("origin", "") + prop("lastEventId", "") + prop("source", nil) + prop("ports", []) + end + end) + end +end diff --git a/lib/quickbeam/vm/runtime/web/navigator.ex b/lib/quickbeam/vm/runtime/web/navigator.ex new file mode 100644 index 000000000..517e0b1a3 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/navigator.ex @@ -0,0 +1,241 @@ +defmodule QuickBEAM.VM.Runtime.Web.Navigator do + @moduledoc "navigator object with navigator.locks for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [object: 1] + + alias QuickBEAM.VM.{Heap, JSThrow, PromiseState} + alias QuickBEAM.VM.ObjectModel.Get + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{"navigator" => build_navigator()} + end + + defp build_navigator do + object do + prop("userAgent", "QuickBEAM/1.0") + prop("platform", "BEAM") + prop("language", "en-US") + prop("onLine", true) + prop("locks", build_locks()) + end + end + + defp build_locks do + object do + method "request" do + case args do + [name | rest] -> + {mode, if_available, callback} = parse_lock_opts(rest) + name_str = to_string(name) + do_lock_request(name_str, mode, if_available, callback) + + _ -> + JSThrow.type_error!("navigator.locks.request requires a name argument") + end + end + + method "query" do + result = + try do + QuickBEAM.LockManager.query() + rescue + _ -> %{held: [], pending: []} + catch + _, _ -> %{held: [], pending: []} + end + + held_list = Map.get(result, :held, []) + pending_list = Map.get(result, :pending, []) + + held_js = + Enum.map(held_list, fn lock -> + Heap.wrap(%{"name" => lock.name, "mode" => lock.mode}) + end) + + pending_js = + Enum.map(pending_list, fn req -> + Heap.wrap(%{"name" => req.name, "mode" => req.mode}) + end) + + query_result = + Heap.wrap(%{ + "held" => held_js, + "pending" => pending_js + }) + + PromiseState.resolved(query_result) + end + end + end + + defp parse_lock_opts(rest) do + case rest do + [opts, cb | _] when not is_function(opts) -> + mode = + case Get.get(opts, "mode") do + m when is_binary(m) -> m + _ -> "exclusive" + end + + if_avail = Get.get(opts, "ifAvailable") == true + {mode, if_avail, cb} + + [cb | _] -> + {"exclusive", false, cb} + + [] -> + JSThrow.type_error!("navigator.locks.request requires a callback") + end + end + + defp do_lock_request(name, mode, if_available, callback) do + caller_pid = self() + + grant_result = + try do + QuickBEAM.LocksAPI.request_lock([name, mode, if_available], caller_pid) + rescue + _ -> "holder_down" + catch + _, _ -> "holder_down" + end + + case grant_result do + "granted" -> + lock_obj = Heap.wrap(%{"name" => name, "mode" => mode}) + + result = + try do + QuickBEAM.VM.Interpreter.invoke_callback(callback, [lock_obj]) + catch + {:js_throw, err} -> + QuickBEAM.LocksAPI.release_lock([name], caller_pid) + throw({:js_throw, err}) + end + + # If result is a pending promise, hold the lock in a background process + case check_pending_promise(result) do + {:pending, _ref} -> + spawn(fn -> + wait_and_release(name, caller_pid, 30_000) + end) + + # Return a promise that will resolve when the callback completes + result + + {:resolved, val} -> + QuickBEAM.LocksAPI.release_lock([name], caller_pid) + PromiseState.resolved(val) + + {:rejected, err} -> + QuickBEAM.LocksAPI.release_lock([name], caller_pid) + PromiseState.rejected(err) + + :not_promise -> + QuickBEAM.LocksAPI.release_lock([name], caller_pid) + PromiseState.resolved(result) + end + + "not_available" -> + lock_null = nil + + result = + try do + QuickBEAM.VM.Interpreter.invoke_callback(callback, [lock_null]) + catch + {:js_throw, err} -> throw({:js_throw, err}) + end + + PromiseState.resolved(await_if_promise(result)) + + _ -> + PromiseState.rejected(Heap.make_error("Lock request failed", "DOMException")) + end + end + + defp check_pending_promise({:obj, ref}) do + import QuickBEAM.VM.Heap.Keys + + case Heap.get_obj(ref, %{}) do + %{promise_state() => :pending} -> {:pending, ref} + %{promise_state() => :resolved, promise_value() => v} -> {:resolved, v} + %{promise_state() => :rejected, promise_value() => v} -> {:rejected, v} + _ -> :not_promise + end + end + + defp check_pending_promise(_), do: :not_promise + + defp wait_and_release(name, _holder_pid, release_after_ms) do + try do + grant = QuickBEAM.LocksAPI.request_lock([name, "exclusive", false], self()) + + if grant == "granted" do + Process.sleep(release_after_ms) + QuickBEAM.LocksAPI.release_lock([name], self()) + end + catch + _, _ -> :ok + end + end + + defp await_if_promise(val) do + case val do + {:obj, ref} -> + import QuickBEAM.VM.Heap.Keys + + case Heap.get_obj(ref, %{}) do + %{promise_state() => :resolved, promise_value() => v} -> + v + + %{promise_state() => :rejected, promise_value() => v} -> + throw({:js_throw, v}) + + %{promise_state() => :pending} -> + # Block waiting for resolution + wait_for_promise(ref, 5000) + + _ -> + val + end + + _ -> + val + end + end + + defp wait_for_promise(ref, timeout) do + import QuickBEAM.VM.Heap.Keys + + # Drain microtasks repeatedly until settled + deadline = System.monotonic_time(:millisecond) + timeout + + wait_loop(ref, deadline) + end + + defp wait_loop(ref, deadline) do + import QuickBEAM.VM.Heap.Keys + QuickBEAM.VM.PromiseState.drain_microtasks() + + case Heap.get_obj(ref, %{}) do + %{promise_state() => :resolved, promise_value() => v} -> + v + + %{promise_state() => :rejected, promise_value() => v} -> + throw({:js_throw, v}) + + _ -> + now = System.monotonic_time(:millisecond) + + if now >= deadline do + JSThrow.type_error!("Lock callback timed out") + else + Process.sleep(1) + wait_loop(ref, deadline) + end + end + end +end diff --git a/lib/quickbeam/vm/runtime/web/performance.ex b/lib/quickbeam/vm/runtime/web/performance.ex new file mode 100644 index 000000000..4248d6633 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/performance.ex @@ -0,0 +1,357 @@ +defmodule QuickBEAM.VM.Runtime.Web.Performance do + @moduledoc "performance object builtin for BEAM mode, including mark/measure/getEntries." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, constructor: 2, object: 1] + + alias QuickBEAM.VM.{Heap, JSThrow} + alias QuickBEAM.VM.ObjectModel.Get + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{"performance" => performance_object()} + end + + defp performance_object do + time_origin_us = :erlang.system_time(:microsecond) + time_origin_ms = time_origin_us / 1000.0 + + entries_ref = make_ref() + Heap.put_obj(entries_ref, %{list: []}) + + perf_mark_ctor = make_perf_mark_ctor() + perf_measure_ctor = make_perf_measure_ctor() + + object do + prop("timeOrigin", time_origin_ms) + + method "now" do + (:erlang.system_time(:microsecond) - time_origin_us) / 1000.0 + end + + method "mark" do + name = args |> arg(0, nil) |> to_string() + opts = arg(args, 1, nil) + + now = (:erlang.system_time(:microsecond) - time_origin_us) / 1000.0 + + {start_time, detail} = + case opts do + {:obj, _} -> + st = + case Get.get(opts, "startTime") do + :undefined -> now + nil -> now + n when is_number(n) -> n * 1.0 + _ -> now + end + + det = + case Get.get(opts, "detail") do + :undefined -> nil + v -> v + end + + {st, det} + + _ -> + {now, nil} + end + + mark = make_perf_entry("mark", name, start_time, 0, detail, perf_mark_ctor) + entries = load_entries(entries_ref) + store_entries(entries_ref, entries ++ [mark]) + mark + end + + method "measure" do + name = args |> arg(0, "unnamed") |> to_string() + entries = load_entries(entries_ref) + rest = Enum.drop(args, 1) + + now = (:erlang.system_time(:microsecond) - time_origin_us) / 1000.0 + + {start_time, end_time, detail} = + case rest do + [{:obj, _} = opts | _] -> + start_opt = Get.get(opts, "start") + end_opt = Get.get(opts, "end") + dur_opt = Get.get(opts, "duration") + + det = + case Get.get(opts, "detail") do + :undefined -> nil + v -> v + end + + {resolved_start, resolved_end} = + resolve_measure_opts(start_opt, end_opt, dur_opt, entries, now) + + {resolved_start, resolved_end, det} + + [start_mark | [end_mark | _]] when start_mark != nil and start_mark != :undefined -> + st = resolve_mark_name(start_mark, entries, now, "start") + + et = + case end_mark do + nil -> now + :undefined -> now + em -> resolve_mark_name(em, entries, now, "end") + end + + {st, et, nil} + + [start_mark | _] when start_mark != nil and start_mark != :undefined -> + st = resolve_mark_name(start_mark, entries, now, "start") + {st, now, nil} + + _ -> + {0.0, now, nil} + end + + duration = end_time - start_time + + measure = + make_perf_entry("measure", name, start_time, duration, detail, perf_measure_ctor) + + store_entries(entries_ref, entries ++ [measure]) + measure + end + + method "getEntries" do + Heap.wrap(load_entries(entries_ref)) + end + + method "getEntriesByType" do + type = args |> arg(0, nil) |> to_string() + + result = + entries_ref + |> load_entries() + |> Enum.filter(fn e -> Get.get(e, "entryType") == type end) + + Heap.wrap(result) + end + + method "getEntriesByName" do + name = args |> arg(0, nil) |> to_string() + type_filter = arg(args, 1, nil) + + result = + entries_ref + |> load_entries() + |> Enum.filter(fn e -> + name_match = Get.get(e, "name") == name + + type_match = + case type_filter do + nil -> true + :undefined -> true + t -> Get.get(e, "entryType") == to_string(t) + end + + name_match and type_match + end) + + Heap.wrap(result) + end + + method "clearMarks" do + name_filter = arg(args, 0, nil) + + updated = + entries_ref + |> load_entries() + |> Enum.reject(fn e -> + if Get.get(e, "entryType") == "mark" do + case name_filter do + nil -> true + :undefined -> true + n -> Get.get(e, "name") == to_string(n) + end + else + false + end + end) + + store_entries(entries_ref, updated) + :undefined + end + + method "clearMeasures" do + name_filter = arg(args, 0, nil) + + updated = + entries_ref + |> load_entries() + |> Enum.reject(fn e -> + if Get.get(e, "entryType") == "measure" do + case name_filter do + nil -> true + :undefined -> true + n -> Get.get(e, "name") == to_string(n) + end + else + false + end + end) + + store_entries(entries_ref, updated) + :undefined + end + + method "toJSON" do + Heap.wrap(%{"timeOrigin" => time_origin_ms}) + end + end + end + + defp make_perf_mark_ctor do + constructor("PerformanceMark", fn _args, _this -> :undefined end) + end + + defp make_perf_measure_ctor do + constructor("PerformanceMeasure", fn _args, _this -> :undefined end) + end + + defp make_perf_entry(entry_type, name, start_time, duration, detail, ctor) do + proto = Heap.get_class_proto(ctor) + + object do + prop("name", name) + prop("entryType", entry_type) + prop("startTime", start_time) + prop("duration", duration) + prop("detail", detail) + prop("constructor", ctor) + prop("__proto__", proto) + + method "toJSON" do + det = Get.get(this, "detail") + + Heap.wrap(%{ + "name" => Get.get(this, "name"), + "entryType" => Get.get(this, "entryType"), + "startTime" => Get.get(this, "startTime"), + "duration" => Get.get(this, "duration"), + "detail" => det + }) + end + end + end + + defp resolve_measure_opts(start_opt, end_opt, dur_opt, entries, now) do + case {start_opt, end_opt, dur_opt} do + {:undefined, :undefined, :undefined} -> + {0.0, now} + + {:undefined, :undefined, nil} -> + {0.0, now} + + {s, :undefined, :undefined} when s != :undefined -> + st = resolve_time_opt(s, entries, "start") + {st, now} + + {s, :undefined, nil} when s != :undefined -> + st = resolve_time_opt(s, entries, "start") + {st, now} + + {:undefined, e, :undefined} when e != :undefined -> + et = resolve_time_opt(e, entries, "end") + {0.0, et} + + {:undefined, e, nil} when e != :undefined -> + et = resolve_time_opt(e, entries, "end") + {0.0, et} + + {s, e, :undefined} when s != :undefined and e != :undefined -> + st = resolve_time_opt(s, entries, "start") + et = resolve_time_opt(e, entries, "end") + {st, et} + + {s, e, nil} when s != :undefined and e != :undefined -> + st = resolve_time_opt(s, entries, "start") + et = resolve_time_opt(e, entries, "end") + {st, et} + + {s, :undefined, d} when s != :undefined and d != :undefined and d != nil -> + st = resolve_time_opt(s, entries, "start") + dur = coerce_number(d) + {st, st + dur} + + {s, nil, d} when s != :undefined and d != :undefined and d != nil -> + st = resolve_time_opt(s, entries, "start") + dur = coerce_number(d) + {st, st + dur} + + {:undefined, e, d} when e != :undefined and d != :undefined and d != nil -> + et = resolve_time_opt(e, entries, "end") + dur = coerce_number(d) + {et - dur, et} + + {nil, e, d} when e != :undefined and d != :undefined and d != nil -> + et = resolve_time_opt(e, entries, "end") + dur = coerce_number(d) + {et - dur, et} + + _ -> + st = + if start_opt != :undefined and start_opt != nil, + do: resolve_time_opt(start_opt, entries, "start"), + else: 0.0 + + et = + if end_opt != :undefined and end_opt != nil, + do: resolve_time_opt(end_opt, entries, "end"), + else: now + + {st, et} + end + end + + defp resolve_time_opt(opt, _entries, _role) when is_number(opt), do: opt * 1.0 + + defp resolve_time_opt(opt, entries, role) when is_binary(opt) do + resolve_mark_name(opt, entries, 0.0, role) + end + + defp resolve_time_opt({:obj, _} = _obj, _entries, _role), do: 0.0 + defp resolve_time_opt(_, _entries, _role), do: 0.0 + + defp resolve_mark_name(name_val, entries, _default, role) when is_binary(name_val) do + case Enum.filter(entries, fn e -> Get.get(e, "name") == name_val end) do + [] -> + JSThrow.error!("The mark '#{name_val}' does not exist") + + matches -> + mark = List.last(matches) + st = Get.get(mark, "startTime") + dur = Get.get(mark, "duration") + + case role do + "end" -> coerce_number(st) + coerce_number(dur) + _ -> coerce_number(st) + end + end + end + + defp resolve_mark_name(name_val, entries, default, role) do + resolve_mark_name(to_string(name_val), entries, default, role) + end + + defp coerce_number(n) when is_float(n), do: n + defp coerce_number(n) when is_integer(n), do: n * 1.0 + defp coerce_number(_), do: 0.0 + + defp load_entries(entries_ref) do + case Heap.get_obj(entries_ref, %{}) do + %{list: list} when is_list(list) -> list + _ -> [] + end + end + + defp store_entries(entries_ref, entries) do + Heap.put_obj(entries_ref, %{list: entries}) + end +end diff --git a/lib/quickbeam/vm/runtime/web/state_ref.ex b/lib/quickbeam/vm/runtime/web/state_ref.ex new file mode 100644 index 000000000..37bc96cf2 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/state_ref.ex @@ -0,0 +1,33 @@ +defmodule QuickBEAM.VM.Runtime.Web.StateRef do + @moduledoc "Small reference-backed state container used by Web API builtin objects." + + alias QuickBEAM.VM.Heap + + @doc "Creates a new heap-backed state reference initialized with `initial`." + def new(initial) do + ref = make_ref() + put(ref, initial) + ref + end + + @doc "Reads the value stored at `ref`, returning `default` if it is absent." + def get(ref, default \\ %{}) do + Heap.get_obj(ref, default) + end + + @doc "Stores `value` at `ref` and returns the stored value." + def put(ref, value) do + Heap.put_obj(ref, value) + value + end + + @doc "Updates the value at `ref` by applying `fun` to the current or default value." + def update(ref, default \\ %{}, fun) when is_function(fun, 1) do + new_value = + ref + |> get(default) + |> fun.() + + put(ref, new_value) + end +end diff --git a/lib/quickbeam/vm/runtime/web/streams.ex b/lib/quickbeam/vm/runtime/web/streams.ex new file mode 100644 index 000000000..02cf36818 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/streams.ex @@ -0,0 +1,627 @@ +defmodule QuickBEAM.VM.Runtime.Web.Streams do + @moduledoc "ReadableStream, WritableStream, and TransformStream builtins for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, object: 1] + + alias QuickBEAM.VM.{Heap, PromiseState} + alias QuickBEAM.VM.ObjectModel.{Get, Put} + alias QuickBEAM.VM.Runtime.Web.{Callback, IteratorResult} + alias QuickBEAM.VM.Runtime.Web.Streams.Bytes + alias QuickBEAM.VM.Runtime.WebAPIs + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{ + "ReadableStream" => WebAPIs.register("ReadableStream", &build_readable_stream/2), + "WritableStream" => WebAPIs.register("WritableStream", &build_writable_stream/2), + "TransformStream" => WebAPIs.register("TransformStream", &build_transform_stream/2), + "TextEncoderStream" => WebAPIs.register("TextEncoderStream", &build_text_encoder_stream/2), + "TextDecoderStream" => WebAPIs.register("TextDecoderStream", &build_text_decoder_stream/2) + } + end + + defp build_text_encoder_stream(_args, _this) do + chunks_ref = make_ref() + Heap.put_obj(chunks_ref, %{chunks: [], closed: false}) + + sink = + Heap.wrap(%{ + "write" => + {:builtin, "write", + fn [chunk | _], _ -> + str = if is_binary(chunk), do: chunk, else: to_string(chunk) + bytes = :unicode.characters_to_binary(str) + state = Heap.get_obj(chunks_ref, %{}) + existing = Map.get(state, :chunks, []) + Heap.put_obj(chunks_ref, Map.put(state, :chunks, existing ++ [bytes])) + :undefined + end}, + "close" => + {:builtin, "close", + fn _, _ -> + state = Heap.get_obj(chunks_ref, %{}) + Heap.put_obj(chunks_ref, Map.put(state, :closed, true)) + :undefined + end} + }) + + readable = build_readable_stream_from_ref_encoded(chunks_ref) + writable = build_writable_stream([sink], nil) + Heap.wrap(%{"readable" => readable, "writable" => writable, "encoding" => "utf-8"}) + end + + defp build_readable_stream_from_ref_encoded(chunks_ref) do + reader_fn = {:builtin, "getReader", fn _, _ -> build_uint8_reader(chunks_ref) end} + Heap.wrap(%{"getReader" => reader_fn, "locked" => false}) + end + + defp build_uint8_reader(chunks_ref) do + object do + method "read" do + state = Heap.get_obj(chunks_ref, %{}) + chunks = Map.get(state, :chunks, []) + + case chunks do + [chunk | rest] -> + Heap.put_obj(chunks_ref, Map.put(state, :chunks, rest)) + chunk |> Bytes.uint8_array() |> IteratorResult.resolved_value() + + [] -> + IteratorResult.resolved_done() + end + end + + method "releaseLock" do + :undefined + end + + method "cancel" do + PromiseState.resolved(:undefined) + end + end + end + + defp build_text_decoder_stream(args, _this) do + label = + case args do + [l | _] when is_binary(l) -> String.downcase(l) + _ -> "utf-8" + end + + chunks_ref = make_ref() + Heap.put_obj(chunks_ref, %{chunks: [], closed: false}) + + sink = + Heap.wrap(%{ + "write" => + {:builtin, "write", + fn [chunk | _], _ -> + bytes = Bytes.extract(chunk) + decoded = :unicode.characters_to_binary(bytes) + state = Heap.get_obj(chunks_ref, %{}) + existing = Map.get(state, :chunks, []) + Heap.put_obj(chunks_ref, Map.put(state, :chunks, existing ++ [decoded])) + :undefined + end}, + "close" => + {:builtin, "close", + fn _, _ -> + state = Heap.get_obj(chunks_ref, %{}) + Heap.put_obj(chunks_ref, Map.put(state, :closed, true)) + :undefined + end} + }) + + readable = build_readable_stream_from_ref(chunks_ref) + writable = build_writable_stream([sink], nil) + Heap.wrap(%{"readable" => readable, "writable" => writable, "encoding" => label}) + end + + defp build_readable_stream(args, _this) do + source = arg(args, 0, nil) + + chunks_ref = make_ref() + Heap.put_obj(chunks_ref, %{chunks: [], closed: false, locked: false}) + + controller = build_controller(chunks_ref) + + case source do + {:obj, _} -> + start_fn = Get.get(source, "start") + + if start_fn != :undefined and start_fn != nil do + try do + Callback.invoke(start_fn, [controller]) + rescue + _ -> :ok + catch + _, _ -> :ok + end + end + + _ -> + :ok + end + + sym_async_iter = {:symbol, "Symbol.asyncIterator"} + + reader_fn = + {:builtin, "getReader", + fn _args, this -> + state = Heap.get_obj(chunks_ref, %{}) + + if Map.get(state, :locked, false) do + QuickBEAM.VM.JSThrow.type_error!("ReadableStream is already locked") + end + + Heap.put_obj(chunks_ref, Map.put(state, :locked, true)) + Put.put(this, "locked", true) + build_reader(chunks_ref) + end} + + async_iter_fn = + {:builtin, "[Symbol.asyncIterator]", + fn _args, _this -> + build_stream_async_iterator(chunks_ref) + end} + + pipe_through_fn = + {:builtin, "pipeThrough", + fn [ts | _], _this -> + reader = build_reader(chunks_ref) + writable = Get.get(ts, "writable") + readable = Get.get(ts, "readable") + + writer = get_writer(writable) + drain_loop(reader, writer) + readable + end} + + pipe_to_fn = + {:builtin, "pipeTo", + fn [ws | _], _this -> + reader = build_reader(chunks_ref) + writer = get_writer(ws) + drain_loop(reader, writer) + PromiseState.resolved(:undefined) + end} + + object do + prop("locked", false) + prop("getReader", reader_fn) + prop(sym_async_iter, async_iter_fn) + prop("pipeThrough", pipe_through_fn) + prop("pipeTo", pipe_to_fn) + end + end + + defp get_writer(ws) do + case ws do + {:obj, _} -> + write_fn = Get.get(ws, "getWriter") + + case write_fn do + {:builtin, _, cb} -> cb.([], ws) + _ -> nil + end + + _ -> + nil + end + end + + defp build_controller(chunks_ref) do + object do + method "enqueue" do + value = arg(args, 0, :undefined) + state = Heap.get_obj(chunks_ref, %{}) + + unless Map.get(state, :closed, false) do + chunks = Map.get(state, :chunks, []) + Heap.put_obj(chunks_ref, Map.put(state, :chunks, chunks ++ [value])) + end + + :undefined + end + + method "close" do + state = Heap.get_obj(chunks_ref, %{}) + Heap.put_obj(chunks_ref, Map.put(state, :closed, true)) + :undefined + end + + method "error" do + err_reason = arg(args, 0, nil) + state = Heap.get_obj(chunks_ref, %{}) + Heap.put_obj(chunks_ref, Map.merge(state, %{closed: true, error: err_reason})) + :undefined + end + end + end + + defp build_reader(chunks_ref) do + object do + method "read" do + state = Heap.get_obj(chunks_ref, %{}) + chunks = Map.get(state, :chunks, []) + + case chunks do + [chunk | rest] -> + Heap.put_obj(chunks_ref, Map.put(state, :chunks, rest)) + IteratorResult.resolved_value(chunk) + + [] -> + IteratorResult.resolved_done() + end + end + + method "releaseLock" do + :undefined + end + + method "cancel" do + PromiseState.resolved(:undefined) + end + end + end + + defp build_stream_async_iterator(chunks_ref) do + sym_async_iter = {:symbol, "Symbol.asyncIterator"} + + iter = + object do + method "next" do + state = Heap.get_obj(chunks_ref, %{}) + chunks = Map.get(state, :chunks, []) + + case chunks do + [chunk | rest] -> + Heap.put_obj(chunks_ref, Map.put(state, :chunks, rest)) + IteratorResult.resolved_value(chunk) + + [] -> + IteratorResult.resolved_done() + end + end + + method "return" do + IteratorResult.resolved_done() + end + end + + {:obj, ref} = iter + + Heap.update_obj(ref, %{}, fn m -> + Map.put(m, sym_async_iter, {:builtin, "[Symbol.asyncIterator]", fn _, this -> this end}) + end) + + iter + end + + defp build_writable_stream(args, _this) do + sink = arg(args, 0, nil) + locked_ref = make_ref() + Heap.put_obj(locked_ref, false) + + write_fn = + case sink do + {:obj, _} -> + case Get.get(sink, "write") do + f when f != :undefined and f != nil -> f + _ -> nil + end + + _ -> + nil + end + + close_fn = + case sink do + {:obj, _} -> + case Get.get(sink, "close") do + f when f != :undefined and f != nil -> f + _ -> nil + end + + _ -> + nil + end + + ws_ref = make_ref() + Heap.put_obj(ws_ref, %{locked: false}) + + object do + accessor "locked" do + get do + ws_ref + |> Heap.get_obj(%{}) + |> Map.get(:locked, false) + end + end + + method "getWriter" do + state = Heap.get_obj(ws_ref, %{}) + Heap.put_obj(ws_ref, Map.put(state, :locked, true)) + + object do + method "write" do + chunk = arg(args, 0, :undefined) + + if write_fn != nil do + try do + Callback.invoke(write_fn, [chunk]) + rescue + _ -> :ok + catch + _, _ -> :ok + end + end + + PromiseState.resolved(:undefined) + end + + method "close" do + if close_fn != nil do + try do + Callback.invoke(close_fn, []) + rescue + _ -> :ok + catch + _, _ -> :ok + end + end + + PromiseState.resolved(:undefined) + end + + method "abort" do + PromiseState.resolved(:undefined) + end + + method "releaseLock" do + state2 = Heap.get_obj(ws_ref, %{}) + Heap.put_obj(ws_ref, Map.put(state2, :locked, false)) + :undefined + end + end + end + + method "abort" do + PromiseState.resolved(:undefined) + end + + method "close" do + PromiseState.resolved(:undefined) + end + end + end + + defp build_transform_stream(args, _this) do + transformer = arg(args, 0, nil) + chunks_ref = make_ref() + Heap.put_obj(chunks_ref, %{chunks: [], closed: false, locked: false}) + + transform_fn = + case transformer do + {:obj, _} -> + case Get.get(transformer, "transform") do + f when f != :undefined and f != nil -> f + _ -> nil + end + + _ -> + nil + end + + flush_fn = + case transformer do + {:obj, _} -> + case Get.get(transformer, "flush") do + f when f != :undefined and f != nil -> f + _ -> nil + end + + _ -> + nil + end + + controller = build_controller(chunks_ref) + + sink = + Heap.wrap(%{ + "write" => + {:builtin, "write", + fn [chunk | _], _ -> + if transform_fn != nil do + try do + Callback.invoke(transform_fn, [chunk, controller]) + rescue + _ -> + state = Heap.get_obj(chunks_ref, %{}) + chunks = Map.get(state, :chunks, []) + Heap.put_obj(chunks_ref, Map.put(state, :chunks, chunks ++ [chunk])) + catch + _, _ -> + state = Heap.get_obj(chunks_ref, %{}) + chunks = Map.get(state, :chunks, []) + Heap.put_obj(chunks_ref, Map.put(state, :chunks, chunks ++ [chunk])) + end + else + state = Heap.get_obj(chunks_ref, %{}) + chunks = Map.get(state, :chunks, []) + Heap.put_obj(chunks_ref, Map.put(state, :chunks, chunks ++ [chunk])) + end + + :undefined + end}, + "close" => + {:builtin, "close", + fn _, _ -> + if flush_fn != nil do + try do + Callback.invoke(flush_fn, [controller]) + rescue + _ -> :ok + catch + _, _ -> :ok + end + end + + state = Heap.get_obj(chunks_ref, %{}) + Heap.put_obj(chunks_ref, Map.put(state, :closed, true)) + :undefined + end} + }) + + _readable = build_readable_stream([], nil) + writable = build_writable_stream([sink], nil) + readable_from_chunks = build_readable_stream_from_ref(chunks_ref) + + Heap.wrap(%{ + "readable" => readable_from_chunks, + "writable" => writable + }) + end + + defp build_readable_stream_from_ref(chunks_ref) do + sym_async_iter = {:symbol, "Symbol.asyncIterator"} + + reader_fn = + {:builtin, "getReader", + fn _args, _this -> + build_reader(chunks_ref) + end} + + async_iter_fn = + {:builtin, "[Symbol.asyncIterator]", + fn _args, _this -> + build_stream_async_iterator(chunks_ref) + end} + + pipe_through_fn = + {:builtin, "pipeThrough", + fn [ts | _], _this -> + reader = build_reader(chunks_ref) + writable = Get.get(ts, "writable") + readable = Get.get(ts, "readable") + + writer = + case writable do + {:obj, _} -> + write_fn = Get.get(writable, "getWriter") + + case write_fn do + {:builtin, _, cb} -> cb.([], writable) + _ -> nil + end + + _ -> + nil + end + + drain_loop(reader, writer) + readable + end} + + pipe_to_fn = + {:builtin, "pipeTo", + fn [ws | _], _this -> + reader = build_reader(chunks_ref) + + writer = + case ws do + {:obj, _} -> + write_fn = Get.get(ws, "getWriter") + + case write_fn do + {:builtin, _, cb} -> cb.([], ws) + _ -> nil + end + + _ -> + nil + end + + drain_loop(reader, writer) + PromiseState.resolved(:undefined) + end} + + object do + prop("locked", false) + prop("getReader", reader_fn) + prop(sym_async_iter, async_iter_fn) + prop("pipeThrough", pipe_through_fn) + prop("pipeTo", pipe_to_fn) + end + end + + defp drain_loop(reader, writer) do + drain_loop_impl(reader, writer, 1000) + end + + defp drain_loop_impl(_reader, _writer, 0), do: :ok + + defp drain_loop_impl(reader, writer, n) do + read_fn = Get.get(reader, "read") + + result = + case read_fn do + {:builtin, _, cb} -> + prom = cb.([], reader) + resolve_promise(prom) + + _ -> + %{"done" => true} + end + + done = + case result do + {:obj, ref} -> Heap.get_obj(ref, %{}) |> Map.get("done", false) + %{"done" => d} -> d + _ -> true + end + + if done do + if writer != nil do + close_fn = Get.get(writer, "close") + + case close_fn do + {:builtin, _, cb} -> cb.([], writer) + _ -> :ok + end + end + + :ok + else + value = + case result do + {:obj, ref} -> Heap.get_obj(ref, %{}) |> Map.get("value", :undefined) + _ -> :undefined + end + + if writer != nil do + write_fn = Get.get(writer, "write") + + case write_fn do + {:builtin, _, cb} -> cb.([value], writer) + _ -> :ok + end + end + + drain_loop_impl(reader, writer, n - 1) + end + end + + defp resolve_promise({:obj, ref}) do + import QuickBEAM.VM.Heap.Keys + + case Heap.get_obj(ref, %{}) do + %{promise_state() => :resolved, promise_value() => val} -> val + _ -> %{"done" => true} + end + end + + defp resolve_promise(v), do: v +end diff --git a/lib/quickbeam/vm/runtime/web/streams/bytes.ex b/lib/quickbeam/vm/runtime/web/streams/bytes.ex new file mode 100644 index 000000000..80b5e2edb --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/streams/bytes.ex @@ -0,0 +1,44 @@ +defmodule QuickBEAM.VM.Runtime.Web.Streams.Bytes do + @moduledoc "Byte extraction helpers for stream chunks." + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Runtime.Web.BinaryData + + @doc "Wraps stream chunk bytes as a JavaScript `Uint8Array`." + def uint8_array(bytes) when is_binary(bytes), do: BinaryData.uint8_array(bytes) + + @doc "Extracts raw bytes from stream chunk values." + def extract({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> extract_from_map(map) + _ -> <<>> + end + end + + def extract(bytes) when is_binary(bytes), do: bytes + def extract({:bytes, bytes}), do: bytes + def extract(_), do: <<>> + + defp extract_from_map(map) do + cond do + Map.has_key?(map, "__typed_array__") -> extract_typed_array(map) + Map.has_key?(map, "__buffer__") -> Map.get(map, "__buffer__", <<>>) + true -> <<>> + end + end + + defp extract_typed_array(map) do + with {:obj, buffer_ref} <- Map.get(map, "buffer"), + buffer_map when is_map(buffer_map) <- Heap.get_obj(buffer_ref, %{}) do + buffer = Map.get(buffer_map, "__buffer__", <<>>) + offset = Map.get(map, "byteOffset", 0) + length = Map.get(map, "byteLength", 0) + + if byte_size(buffer) >= offset + length and length > 0, + do: binary_part(buffer, offset, length), + else: <<>> + else + _ -> <<>> + end + end +end diff --git a/lib/quickbeam/vm/runtime/web/subtle_crypto.ex b/lib/quickbeam/vm/runtime/web/subtle_crypto.ex new file mode 100644 index 000000000..06e2dc79c --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/subtle_crypto.ex @@ -0,0 +1,407 @@ +defmodule QuickBEAM.VM.Runtime.Web.SubtleCrypto do + @moduledoc "crypto.subtle builtin for BEAM mode — delegates to QuickBEAM.SubtleCrypto." + + import QuickBEAM.VM.Builtin, only: [argv: 2, object: 1] + + alias QuickBEAM.VM.{Heap, JSThrow, PromiseState} + alias QuickBEAM.VM.ObjectModel.Get + alias QuickBEAM.VM.Runtime.Web.BinaryData + alias QuickBEAM.VM.Runtime.Web.Buffer + + @doc "Builds the SubtleCrypto object." + def build_subtle do + object do + method "digest" do + [algo_val, data_val] = argv(args, [nil, nil]) + algo = normalize_algo_name(algo_val) + data = extract_bytes(data_val) + + result = + try do + QuickBEAM.SubtleCrypto.digest([algo, data]) + rescue + e -> JSThrow.type_error!(Exception.message(e)) + end + + PromiseState.resolved(bytes_to_array_buffer(result)) + end + + method "generateKey" do + [algo_val, _extractable, _key_usages] = argv(args, [nil, nil, nil]) + algo = normalize_algo(algo_val) + + result = + try do + QuickBEAM.SubtleCrypto.generate_key([algo]) + rescue + e -> JSThrow.type_error!(Exception.message(e)) + end + + PromiseState.resolved(wrap_key_result(result)) + end + + method "sign" do + [algo_val, key_val, data_val] = argv(args, [nil, nil, nil]) + algo = normalize_algo(algo_val) + key_data = key_data_for_crypto(unwrap_key(key_val)) + data = extract_bytes(data_val) + + result = + try do + QuickBEAM.SubtleCrypto.sign([algo, key_data, data]) + rescue + e -> JSThrow.type_error!(Exception.message(e)) + end + + PromiseState.resolved(bytes_to_array_buffer(result)) + end + + method "verify" do + [algo_val, key_val, sig_val, data_val] = argv(args, [nil, nil, nil, nil]) + algo = normalize_algo(algo_val) + key_data = key_data_for_crypto(unwrap_key(key_val)) + sig = extract_bytes(sig_val) + data = extract_bytes(data_val) + + result = + try do + QuickBEAM.SubtleCrypto.verify([algo, key_data, sig, data]) + rescue + e -> JSThrow.type_error!(Exception.message(e)) + end + + PromiseState.resolved(result) + end + + method "encrypt" do + [algo_val, key_val, data_val] = argv(args, [nil, nil, nil]) + algo = normalize_algo(algo_val) + key_data = key_data_for_crypto(unwrap_key(key_val)) + data = extract_bytes(data_val) + + result = + try do + QuickBEAM.SubtleCrypto.encrypt([algo, key_data, data]) + rescue + e -> JSThrow.type_error!(Exception.message(e)) + end + + PromiseState.resolved(bytes_to_array_buffer(result)) + end + + method "decrypt" do + [algo_val, key_val, data_val] = argv(args, [nil, nil, nil]) + algo = normalize_algo(algo_val) + key_data = key_data_for_crypto(unwrap_key(key_val)) + data = extract_bytes(data_val) + + result = + try do + QuickBEAM.SubtleCrypto.decrypt([algo, key_data, data]) + rescue + e -> JSThrow.type_error!(Exception.message(e)) + end + + PromiseState.resolved(bytes_to_array_buffer(result)) + end + + method "deriveBits" do + [algo_val, key_val, length_val] = argv(args, [nil, nil, nil]) + algo = normalize_algo(algo_val) + key_data = key_data_for_crypto(unwrap_key(key_val)) + length = to_int(length_val) + + result = + try do + QuickBEAM.SubtleCrypto.derive_bits([algo, key_data, length]) + rescue + e -> JSThrow.type_error!(Exception.message(e)) + end + + PromiseState.resolved(bytes_to_array_buffer(result)) + end + + method "deriveKey" do + [algo_val, key_val, derived_algo_val, extractable, _key_usages] = + argv(args, [nil, nil, nil, nil, nil]) + + algo = normalize_algo(algo_val) + key_data = key_data_for_crypto(unwrap_key(key_val)) + derived_algo = normalize_algo(derived_algo_val) + + # Determine bit length from derived algo + length = + case derived_algo do + %{"length" => l} -> l + _ -> 256 + end + + bits_result = + try do + QuickBEAM.SubtleCrypto.derive_bits([algo, key_data, length]) + rescue + e -> JSThrow.type_error!(Exception.message(e)) + end + + {:bytes, raw_key} = bits_result + algo_name = Map.get(derived_algo, "name", "AES-GCM") + + derived_key = %{ + "type" => "secret", + "algorithm" => algo_name, + "extractable" => extractable == true, + "data" => {:bytes, raw_key} + } + + PromiseState.resolved(wrap_crypto_key(derived_key)) + end + + method "importKey" do + [format_val, data_val, algo_val, extractable, _key_usages] = + argv(args, [nil, nil, nil, nil, nil]) + + format = to_string(format_val) + algo = normalize_algo(algo_val) + algo_name = Map.get(algo, "name", "") + raw_bytes = extract_bytes(data_val) + + key = + case format do + "raw" -> + %{ + "type" => "secret", + "algorithm" => algo_name, + "extractable" => extractable == true, + "data" => {:bytes, raw_bytes} + } + + "PBKDF2" -> + %{ + "type" => "secret", + "algorithm" => "PBKDF2", + "extractable" => false, + "data" => {:bytes, raw_bytes} + } + + _ -> + %{ + "type" => "secret", + "algorithm" => algo_name, + "extractable" => extractable == true, + "data" => {:bytes, raw_bytes} + } + end + + # Handle PBKDF2 format — data is the password + key = + if algo_name == "PBKDF2" do + %{key | "algorithm" => "PBKDF2"} + else + key + end + + PromiseState.resolved(wrap_crypto_key(key)) + end + + method "exportKey" do + [format_val, key_val] = argv(args, [nil, nil]) + format = to_string(format_val) + key_data = unwrap_key(key_val) + + result = + case format do + "raw" -> + raw = Map.get(key_data, "data") + + bytes = + case raw do + {:bytes, b} -> b + b when is_binary(b) -> b + _ -> <<>> + end + + bytes_to_array_buffer({:bytes, bytes}) + + _ -> + JSThrow.type_error!("exportKey format #{format} not supported") + end + + PromiseState.resolved(result) + end + end + end + + # ── Helpers ── + + defp normalize_algo_name(algo) when is_binary(algo), do: algo + + defp normalize_algo_name({:obj, _} = obj) do + case Get.get(obj, "name") do + name when is_binary(name) -> name + _ -> "" + end + end + + defp normalize_algo_name(_), do: "" + + defp normalize_algo(algo) when is_binary(algo), do: %{"name" => algo} + + defp normalize_algo({:obj, _ref} = obj) do + extract_algo_from_obj(obj) + end + + defp normalize_algo(nil), do: %{} + defp normalize_algo(_), do: %{} + + defp extract_algo_from_obj({:obj, _ref} = obj) do + keys = [ + "name", + "hash", + "namedCurve", + "length", + "iv", + "salt", + "iterations", + "additionalData", + "tagLength", + "public" + ] + + Enum.reduce(keys, %{}, fn key, acc -> + case Get.get(obj, key) do + nil -> acc + :undefined -> acc + val -> Map.put(acc, key, resolve_nested(val)) + end + end) + end + + defp resolve_nested(v) when is_binary(v), do: v + defp resolve_nested(v) when is_integer(v), do: v + defp resolve_nested(v) when is_float(v), do: trunc(v) + defp resolve_nested(v) when is_boolean(v), do: v + + defp resolve_nested({:obj, _} = obj) do + # Could be a typed array (iv, salt) + extract_bytes(obj) + end + + defp resolve_nested({:bytes, b}), do: b + defp resolve_nested(v), do: v + + defp extract_bytes(nil), do: <<>> + defp extract_bytes(:undefined), do: <<>> + defp extract_bytes({:bytes, b}) when is_binary(b), do: b + defp extract_bytes(b) when is_binary(b), do: b + defp extract_bytes({:obj, _} = obj), do: Buffer.extract_buf_bytes(obj) + + defp extract_bytes(list) when is_list(list) do + for value <- list, into: <<>> do + case value do + n when is_integer(n) -> <> + _ -> <<0>> + end + end + end + + defp extract_bytes(_), do: <<>> + + defp bytes_to_array_buffer({:bytes, bytes}), do: bytes_to_array_buffer(bytes) + + defp bytes_to_array_buffer(bytes) when is_binary(bytes), do: BinaryData.array_buffer(bytes) + + defp wrap_key_result(%{"publicKey" => pub, "privateKey" => priv}) do + Heap.wrap(%{ + "publicKey" => wrap_crypto_key(pub), + "privateKey" => wrap_crypto_key(priv) + }) + end + + defp wrap_key_result(key_data) when is_map(key_data) do + wrap_crypto_key(key_data) + end + + defp wrap_crypto_key(key_data) when is_map(key_data) do + raw_data = Map.get(key_data, "data") + + data_val = + case raw_data do + {:bytes, bytes} -> bytes_to_uint8(bytes) + bytes when is_binary(bytes) -> bytes_to_uint8(bytes) + _ -> :undefined + end + + Heap.wrap(%{ + "type" => Map.get(key_data, "type", "secret"), + "algorithm" => Map.get(key_data, "algorithm", ""), + "extractable" => Map.get(key_data, "extractable", true), + "usages" => [], + "namedCurve" => Map.get(key_data, "namedCurve", :undefined), + "hash" => Map.get(key_data, "hash", :undefined), + "data" => data_val, + "__key_data__" => key_data + }) + end + + defp bytes_to_uint8(bytes) when is_binary(bytes), do: BinaryData.uint8_array(bytes) + + defp unwrap_key({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + m when is_map(m) -> + case Map.get(m, "__key_data__") do + kd when is_map(kd) -> + # Ensure data is a raw binary for SubtleCrypto functions + normalize_key_data(kd) + + _ -> + # Reconstruct from the object properties + raw = + case Map.get(m, "data") do + {:bytes, b} -> b + b when is_binary(b) -> b + {:obj, _} = arr -> Buffer.extract_buf_bytes(arr) + _ -> <<>> + end + + %{ + "type" => Map.get(m, "type", "secret"), + "algorithm" => Map.get(m, "algorithm", ""), + "namedCurve" => Map.get(m, "namedCurve"), + "hash" => Map.get(m, "hash"), + "data" => raw + } + end + + _ -> + %{} + end + end + + defp unwrap_key(_), do: %{} + + defp normalize_key_data(kd) when is_map(kd) do + # SubtleCrypto.encrypt etc. use to_binary/1 which handles :binary but not {:bytes, binary} + # We keep {:bytes, binary} as SubtleCrypto knows how to handle it + kd + end + + # QuickBEAM.SubtleCrypto uses to_binary which handles is_binary and is_list + # So we need to unwrap {:bytes, b} to just b before calling SubtleCrypto + defp key_data_for_crypto(kd) when is_map(kd) do + data = Map.get(kd, "data") + + raw = + case data do + {:bytes, b} -> b + b when is_binary(b) -> b + {:obj, _} = arr -> Buffer.extract_buf_bytes(arr) + _ -> <<>> + end + + Map.put(kd, "data", raw) + end + + defp to_int(n) when is_integer(n), do: n + defp to_int(n) when is_float(n), do: trunc(n) + defp to_int(_), do: 0 +end diff --git a/lib/quickbeam/vm/runtime/web/text_encoding.ex b/lib/quickbeam/vm/runtime/web/text_encoding.ex new file mode 100644 index 000000000..c4aa0aba3 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/text_encoding.ex @@ -0,0 +1,316 @@ +defmodule QuickBEAM.VM.Runtime.Web.TextEncoding do + @moduledoc "TextEncoder and TextDecoder builtins for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, argv: 2, object: 1] + + alias QuickBEAM.VM.{Heap, JSThrow} + alias QuickBEAM.VM.ObjectModel.{Get, Put} + alias QuickBEAM.VM.Runtime.Web.BinaryData + alias QuickBEAM.VM.Runtime.WebAPIs + + @supported_encodings ~w[utf-8 utf8 unicode-1-1-utf-8] + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{ + "TextEncoder" => WebAPIs.register("TextEncoder", &build_text_encoder/2), + "TextDecoder" => WebAPIs.register("TextDecoder", &build_text_decoder/2) + } + end + + defp build_text_encoder(_args, _this) do + object do + prop("encoding", "utf-8") + + method "encode" do + str = + case arg(args, 0, "") do + value when is_binary(value) -> value + _ -> "" + end + + bytes = encode_wtf8(str) + make_uint8array(bytes) + end + + method "encodeInto" do + [source, dest] = argv(args, ["", nil]) + str = if is_binary(source), do: source, else: "" + encode_into(str, dest) + end + end + end + + defp build_text_decoder(args, _this) do + label = + case arg(args, 0, nil) do + label when is_binary(label) -> String.downcase(label) + _ -> "utf-8" + end + + label = normalize_encoding_label(label) + + unless label in @supported_encodings do + JSThrow.range_error!( + "The encoding label provided ('#{arg(args, 0, :undefined)}') is invalid." + ) + end + + fatal = + case Get.get(arg(args, 1, nil), "fatal") do + true -> true + _ -> false + end + + object do + prop("encoding", "utf-8") + prop("fatal", fatal) + + method "decode" do + bytes = extract_bytes(args) + + if fatal do + strict_decode_utf8!(bytes) + else + lenient_decode_utf8(bytes) + end + end + end + end + + # ── UTF-8 encoding with WTF-8 handling for surrogates ── + + defp encode_wtf8(str) do + str + |> decode_js_codepoints() + |> Enum.flat_map(&codepoint_to_utf8_bytes/1) + end + + defp decode_js_codepoints(str) do + decode_js_codepoints_acc(str, []) + end + + defp decode_js_codepoints_acc(<<>>, acc), do: Enum.reverse(acc) + + # WTF-8 surrogate sequence: 0xED followed by continuation bytes in surrogate range + # These are lone surrogates stored as WTF-8 — replace with U+FFFD + defp decode_js_codepoints_acc(<<0xED, b2, b3, rest::binary>>, acc) + when b2 in 0xA0..0xBF and b3 in 0x80..0xBF do + decode_js_codepoints_acc(rest, [0xFFFD | acc]) + end + + defp decode_js_codepoints_acc(<>, acc) do + decode_js_codepoints_acc(rest, [cp | acc]) + end + + # Invalid UTF-8 byte - treat as replacement + defp decode_js_codepoints_acc(<<_byte, rest::binary>>, acc) do + decode_js_codepoints_acc(rest, [0xFFFD | acc]) + end + + defp codepoint_to_utf8_bytes(cp) when cp in 0xD800..0xDFFF, do: [0xEF, 0xBF, 0xBD] + defp codepoint_to_utf8_bytes(cp) when cp in 0..0x10FFFF, do: :binary.bin_to_list(<>) + defp codepoint_to_utf8_bytes(_), do: [0xEF, 0xBF, 0xBD] + + # ── encodeInto ── + + defp encode_into(str, dest) do + codepoints = decode_js_codepoints(str) + dest_len = get_typed_array_len(dest) + {read, written, bytes} = encode_into_loop(codepoints, dest_len, 0, 0, []) + + bytes_list = Enum.reverse(bytes) + + Enum.with_index(bytes_list) + |> Enum.each(fn {byte, i} -> Put.put_element(dest, i, byte) end) + + Heap.wrap(%{"read" => read, "written" => written}) + end + + defp encode_into_loop([], _dest_len, read, written, acc) do + {read, written, acc} + end + + defp encode_into_loop([cp | rest], dest_len, read, written, acc) do + bytes = codepoint_to_utf8_bytes(cp) + byte_len = length(bytes) + + if written + byte_len > dest_len do + {read, written, acc} + else + # For surrogate pairs from the original JS string: the high surrogate produces + # 3 FFFD bytes but counts as 1 JS char (read += 1), low surrogate same. + # For supplementary codepoints (already merged): 4 bytes, read += 2. + chars_consumed = if cp > 0xFFFF, do: 2, else: 1 + + encode_into_loop( + rest, + dest_len, + read + chars_consumed, + written + byte_len, + Enum.reverse(bytes) ++ acc + ) + end + end + + defp get_typed_array_len(arr) do + case arr do + {:obj, ref} -> + case Heap.get_obj(ref, %{}) do + m when is_map(m) -> Map.get(m, "length", 0) |> trunc_int() + _ -> 0 + end + + _ -> + 0 + end + end + + defp trunc_int(n) when is_integer(n), do: n + defp trunc_int(n) when is_float(n), do: trunc(n) + defp trunc_int(_), do: 0 + + # ── UTF-8 decoding ── + + defp extract_bytes(args) do + case args do + [] -> <<>> + [:undefined | _] -> <<>> + [nil | _] -> <<>> + [arr | _] -> typed_array_to_binary(arr) + end + end + + defp typed_array_to_binary({:obj, ref}) do + case Heap.get_obj(ref, %{}) do + map when is_map(map) -> + cond do + # ArrayBuffer + Map.has_key?(map, "__buffer__") and not Map.has_key?(map, "__typed_array__") -> + Map.get(map, "__buffer__", <<>>) + + # TypedArray + Map.has_key?(map, "__typed_array__") -> + case Map.get(map, "buffer") do + {:obj, buf_ref} -> + case Heap.get_obj(buf_ref, %{}) do + m when is_map(m) -> + ab_buf = Map.get(m, "__buffer__", <<>>) + offset = Map.get(map, "byteOffset", 0) + byte_len = Map.get(map, "byteLength", 0) + + if byte_size(ab_buf) >= offset + byte_len and byte_len > 0 do + binary_part(ab_buf, offset, byte_len) + else + Map.get(map, "__buffer__", <<>>) + end + + _ -> + Map.get(map, "__buffer__", <<>>) + end + + _ -> + Map.get(map, "__buffer__", <<>>) + end + + true -> + <<>> + end + + _ -> + <<>> + end + end + + defp typed_array_to_binary(list) when is_list(list) do + :erlang.list_to_binary(list) + end + + defp typed_array_to_binary(_), do: <<>> + + # Lenient UTF-8 decode: invalid sequences → U+FFFD + # Also strips leading UTF-8 BOM (EF BB BF) + defp lenient_decode_utf8(<<0xEF, 0xBB, 0xBF, rest::binary>>) do + lenient_decode_utf8_acc(rest, []) + end + + defp lenient_decode_utf8(bytes) do + lenient_decode_utf8_acc(bytes, []) + end + + defp lenient_decode_utf8_acc(<<>>, acc) do + acc + |> Enum.reverse() + |> :unicode.characters_to_binary(:unicode) + end + + defp lenient_decode_utf8_acc(<<0xED, b2, b3, rest::binary>>, acc) + when b2 >= 0xA0 and b2 <= 0xBF and b3 >= 0x80 and b3 <= 0xBF do + # Encoded surrogate (0xED 0xAx/0xBx ...) → U+FFFD + lenient_decode_utf8_acc(rest, [0xFFFD | acc]) + end + + defp lenient_decode_utf8_acc(<>, acc) do + lenient_decode_utf8_acc(rest, [cp | acc]) + end + + defp lenient_decode_utf8_acc(<<_byte, rest::binary>>, acc) do + lenient_decode_utf8_acc(rest, [0xFFFD | acc]) + end + + # Strict UTF-8 decode: throw TypeError on any invalid byte sequence + defp strict_decode_utf8!(bytes) do + case strict_decode_utf8_acc(bytes, []) do + {:ok, result} -> result + :error -> JSThrow.type_error!("The encoded data was not valid for encoding utf-8") + end + end + + defp strict_decode_utf8_acc(<<>>, acc) do + result = + acc + |> Enum.reverse() + |> :unicode.characters_to_binary(:unicode) + + {:ok, result} + end + + # Reject encoded surrogates (U+D800..U+DFFF) in strict mode + defp strict_decode_utf8_acc(<<0xED, b2, _b3, _rest::binary>>, _acc) + when b2 >= 0xA0 and b2 <= 0xBF do + :error + end + + # Reject overlong encodings + # C0/C1 start bytes are always overlong + defp strict_decode_utf8_acc(<>, _acc) when b in [0xC0, 0xC1] do + :error + end + + # E0 followed by continuation byte < 0xA0 is overlong + defp strict_decode_utf8_acc(<<0xE0, b2, _rest::binary>>, _acc) when b2 < 0xA0 do + :error + end + + # F0 followed by continuation byte < 0x90 is overlong + defp strict_decode_utf8_acc(<<0xF0, b2, _rest::binary>>, _acc) when b2 < 0x90 do + :error + end + + defp strict_decode_utf8_acc(<>, acc) do + strict_decode_utf8_acc(rest, [cp | acc]) + end + + defp strict_decode_utf8_acc(_invalid, _acc), do: :error + + # ── Helpers ── + + defp normalize_encoding_label("utf-8"), do: "utf-8" + defp normalize_encoding_label("utf8"), do: "utf-8" + defp normalize_encoding_label("unicode-1-1-utf-8"), do: "utf-8" + defp normalize_encoding_label(other), do: other + + defp make_uint8array(bytes), do: BinaryData.uint8_array(bytes) +end diff --git a/lib/quickbeam/vm/runtime/web/timers.ex b/lib/quickbeam/vm/runtime/web/timers.ex new file mode 100644 index 000000000..73826f0a7 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/timers.ex @@ -0,0 +1,130 @@ +defmodule QuickBEAM.VM.Runtime.Web.Timers do + @moduledoc "setTimeout, clearTimeout, setInterval, clearInterval builtins for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + alias QuickBEAM.VM.Heap.Caches + alias QuickBEAM.VM.Interpreter + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{ + "setTimeout" => {:builtin, "setTimeout", &set_timeout/2}, + "clearTimeout" => {:builtin, "clearTimeout", &clear_timeout/2}, + "setInterval" => {:builtin, "setInterval", &set_interval/2}, + "clearInterval" => {:builtin, "clearInterval", &clear_interval/2} + } + end + + # ── Timer queue (stored in process dictionary) ── + + defp next_id do + id = Caches.get_timer_next_id() + Caches.put_timer_next_id(id + 1) + id + end + + defp now_ms, do: :erlang.monotonic_time(:millisecond) + + defp enqueue_timer(id, type, callback, delay_ms, repeat_ms) do + fire_at = now_ms() + max(delay_ms, 0) + timer = %{id: id, type: type, callback: callback, fire_at: fire_at, repeat_ms: repeat_ms} + Caches.put_timer_queue(Caches.get_timer_queue() ++ [timer]) + end + + defp dequeue_timer_id(id) do + Caches.put_timer_queue(Enum.reject(Caches.get_timer_queue(), &(&1.id == id))) + end + + @doc "Runs due timers from the process-local timer queue." + def drain_timers do + queue = Caches.get_timer_queue() + now = now_ms() + + {ready, pending} = Enum.split_with(queue, fn timer -> timer.fire_at <= now end) + + Caches.put_timer_queue(pending) + + if ready != [] do + Enum.each(ready, fn timer -> + try do + Interpreter.invoke_callback(timer.callback, []) + catch + {:js_throw, _} -> :ok + end + + # Re-enqueue intervals + if timer.type == :interval do + enqueue_timer(timer.id, :interval, timer.callback, timer.repeat_ms, timer.repeat_ms) + end + end) + + QuickBEAM.VM.PromiseState.drain_microtasks() + true + else + false + end + end + + @doc "Returns milliseconds until the next queued timer should run." + def next_timer_delay_ms do + case Caches.get_timer_queue() do + [] -> + nil + + queue -> + now = now_ms() + min_fire = Enum.min_by(queue, & &1.fire_at).fire_at + max(0, min_fire - now) + end + end + + # ── Builtin implementations ── + + @doc "Adds a timeout callback to the process-local timer queue." + def enqueue_timeout(callback, delay_ms) do + id = next_id() + enqueue_timer(id, :timeout, callback, delay_ms, nil) + id + end + + defp set_timeout([callback | rest], _) do + delay = + case rest do + [n | _] when is_number(n) -> trunc(n) + _ -> 0 + end + + id = next_id() + enqueue_timer(id, :timeout, callback, delay, nil) + id * 1.0 + end + + defp clear_timeout([id | _], _) do + int_id = coerce_timer_id(id) + if int_id, do: dequeue_timer_id(int_id) + :undefined + end + + defp set_interval([callback | rest], _) do + delay = + case rest do + [n | _] when is_number(n) -> trunc(n) + _ -> 0 + end + + id = next_id() + enqueue_timer(id, :interval, callback, delay, max(delay, 0)) + id * 1.0 + end + + defp clear_interval([id | _], _) do + int_id = coerce_timer_id(id) + if int_id, do: dequeue_timer_id(int_id) + :undefined + end + + defp coerce_timer_id(n) when is_float(n), do: trunc(n) + defp coerce_timer_id(n) when is_integer(n), do: n + defp coerce_timer_id(_), do: nil +end diff --git a/lib/quickbeam/vm/runtime/web/url.ex b/lib/quickbeam/vm/runtime/web/url.ex new file mode 100644 index 000000000..feb08d439 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/url.ex @@ -0,0 +1,511 @@ +defmodule QuickBEAM.VM.Runtime.Web.URL do + @moduledoc "URL and URLSearchParams builtins for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, + only: [arg: 3, argv: 2, iterator_from: 1, object: 1, object: 2] + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.JSThrow + alias QuickBEAM.VM.ObjectModel.Get + alias QuickBEAM.VM.Runtime.Web.Callback + alias QuickBEAM.VM.Runtime.WebAPIs + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + url_ctor = build_url_ctor() + + %{ + "URL" => url_ctor, + "URLSearchParams" => WebAPIs.register("URLSearchParams", &build_url_search_params/2) + } + end + + defp build_url_ctor do + ctor = WebAPIs.register("URL", &build_url/2) + + Heap.put_ctor_static( + ctor, + "canParse", + {:builtin, "canParse", + fn args, _ -> + [input | rest] = + case args do + [] -> [""] + a -> a + end + + input_str = to_string(input) + + base_str = + case rest do + [b | _] when is_binary(b) -> b + _ -> nil + end + + parse_args = if base_str, do: [input_str, base_str], else: [input_str] + + case QuickBEAM.URL.parse(parse_args) do + %{"ok" => true} -> true + _ -> false + end + end} + ) + + ctor + end + + defp build_url(args, _this) do + [input | rest] = + case args do + [] -> [""] + a -> a + end + + input_str = to_string(input) + + base_str = + case rest do + [b | _] when is_binary(b) -> b + _ -> nil + end + + parse_args = if base_str, do: [input_str, base_str], else: [input_str] + + case QuickBEAM.URL.parse(parse_args) do + %{"ok" => true, "components" => c} -> + make_url_object(c) + + _ -> + JSThrow.type_error!("Invalid URL: #{input_str}") + end + end + + defp make_url_object(c) do + url_ref = make_ref() + Heap.put_obj(url_ref, c) + + search_params_obj = make_search_params_object(c["search"] || "", url_ref) + + object do + prop("searchParams", search_params_obj) + + accessor "href" do + get do + url_component(url_ref, "href") + end + + set do + new_value = args |> arg(0, nil) |> to_string() + + case QuickBEAM.URL.parse([new_value]) do + %{"ok" => true, "components" => components} -> Heap.put_obj(url_ref, components) + _ -> :ok + end + + :undefined + end + end + + accessor "protocol" do + get do + url_component(url_ref, "protocol") + end + + set do + update_url_component(url_ref, "protocol", args |> arg(0, nil) |> to_string()) + end + end + + accessor "username" do + get do + url_component(url_ref, "username") + end + + set do + update_url_component(url_ref, "username", args |> arg(0, nil) |> to_string()) + end + end + + accessor "password" do + get do + url_component(url_ref, "password") + end + + set do + update_url_component(url_ref, "password", args |> arg(0, nil) |> to_string()) + end + end + + accessor "hostname" do + get do + url_component(url_ref, "hostname") + end + + set do + update_url_component(url_ref, "hostname", args |> arg(0, nil) |> to_string()) + end + end + + accessor "port" do + get do + url_component(url_ref, "port") + end + + set do + update_url_component(url_ref, "port", args |> arg(0, nil) |> to_string()) + end + end + + accessor "pathname" do + get do + url_component(url_ref, "pathname") + end + + set do + update_url_component(url_ref, "pathname", args |> arg(0, nil) |> to_string()) + end + end + + accessor "search" do + get do + url_component(url_ref, "search") + end + + set do + new_search = args |> arg(0, nil) |> to_string() + update_url_component(url_ref, "search", new_search) + sync_search_params_from_url(search_params_obj, normalized_search(new_search)) + end + end + + accessor "hash" do + get do + url_component(url_ref, "hash") + end + + set do + update_url_component(url_ref, "hash", args |> arg(0, nil) |> to_string()) + end + end + + accessor "host" do + get do + components = Heap.get_obj(url_ref, %{}) || %{} + hostname = components["hostname"] || "" + port = components["port"] || "" + if port == "", do: hostname, else: "#{hostname}:#{port}" + end + end + + accessor "origin" do + get do + url_component(url_ref, "origin") + end + end + + method "toString" do + url_component(url_ref, "href") + end + + method "toJSON" do + url_component(url_ref, "href") + end + end + end + + defp url_component(url_ref, component) do + (Heap.get_obj(url_ref, %{}) || %{})[component] || "" + end + + defp normalized_search(""), do: "" + defp normalized_search("?"), do: "" + defp normalized_search("?" <> _ = search), do: search + defp normalized_search(search), do: "?" <> search + + defp update_url_component(url_ref, component, new_val) do + c = Heap.get_obj(url_ref, %{}) || %{} + updated = Map.put(c, component, new_val) + recomposed = recompose_url(updated) + Heap.put_obj(url_ref, recomposed) + :undefined + end + + defp recompose_url(c) do + href = build_href_from_components(c) + + case QuickBEAM.URL.parse([href]) do + %{"ok" => true, "components" => new_c} -> + new_c + + _ -> + # Fallback: just update href from components string + Map.put(c, "href", href) + end + end + + defp build_href_from_components(c) do + QuickBEAM.URL.recompose([c]) + rescue + _ -> + c["href"] || "" + end + + defp sync_search_params_from_url(search_params_obj, new_search) do + case Get.get(search_params_obj, "__entries__") do + {:obj, ref} -> + query = + case new_search do + "?" <> q -> q + q -> q + end + + entries = + if query == "" do + [] + else + QuickBEAM.URL.dissect_query([query]) + end + + Heap.put_obj(ref, %{"entries" => entries}) + + _ -> + :ok + end + + :undefined + end + + defp build_url_search_params(args, _this) do + init = arg(args, 0, "") + make_search_params_from_input(init, nil) + end + + defp make_search_params_object(search_str, url_ref) do + query = + case search_str do + "?" <> q -> q + q -> q + end + + make_search_params_from_input(query, url_ref) + end + + defp make_search_params_from_input(input, url_ref) do + entries = + case input do + s when is_binary(s) and s != "" -> + q = + case s do + "?" <> rest -> rest + other -> other + end + + if q == "", do: [], else: QuickBEAM.URL.dissect_query([q]) + + {:obj, _} = obj -> + raw = Heap.get_obj(elem(obj, 1), %{}) + + cond do + is_list(raw) -> + Enum.flat_map(raw, &extract_kv_pair/1) + + match?({:qb_arr, _}, raw) -> + Heap.obj_to_list(elem(obj, 1)) + |> Enum.flat_map(&extract_kv_pair/1) + + is_map(raw) -> + raw + |> Enum.reject(fn {k, _} -> not is_binary(k) or String.starts_with?(k, "__") end) + |> Enum.map(fn {k, v} -> [to_string(k), to_string(v)] end) + + true -> + [] + end + + _ -> + [] + end + + entries_ref = make_ref() + Heap.put_obj(entries_ref, %{"entries" => entries}) + + object heap: false do + method "get" do + name = args |> arg(0, nil) |> to_string() + + case Enum.find(load_entries_ref(entries_ref), fn [key, _] -> key == name end) do + [_, value] -> value + nil -> nil + end + end + + method "getAll" do + name = args |> arg(0, nil) |> to_string() + + entries_ref + |> load_entries_ref() + |> Enum.filter(fn [key, _] -> key == name end) + |> Enum.map(fn [_, value] -> value end) + |> Heap.wrap() + end + + method "set" do + [name, value] = argv(args, [nil, nil]) + name = to_string(name) + value = to_string(value) + + entries = + entries_ref + |> load_entries_ref() + |> Enum.reject(fn [key, _] -> key == name end) + + save_entries_ref(entries_ref, entries ++ [[name, value]]) + sync_url_search(url_ref, entries_ref) + :undefined + end + + method "append" do + [name, value] = argv(args, [nil, nil]) + entry = [to_string(name), to_string(value)] + save_entries_ref(entries_ref, load_entries_ref(entries_ref) ++ [entry]) + sync_url_search(url_ref, entries_ref) + :undefined + end + + method "delete" do + [name, value] = argv(args, [nil, :undefined]) + name = to_string(name) + + entries = + case value do + value when value != :undefined and value != nil -> + value = to_string(value) + + entries_ref + |> load_entries_ref() + |> Enum.reject(fn [key, entry_value] -> key == name and entry_value == value end) + + _ -> + entries_ref |> load_entries_ref() |> Enum.reject(fn [key, _] -> key == name end) + end + + save_entries_ref(entries_ref, entries) + sync_url_search(url_ref, entries_ref) + :undefined + end + + method "has" do + name = args |> arg(0, nil) |> to_string() + Enum.any?(load_entries_ref(entries_ref), fn [key, _] -> key == name end) + end + + method "sort" do + entries = entries_ref |> load_entries_ref() |> Enum.sort_by(fn [key, _] -> key end) + save_entries_ref(entries_ref, entries) + sync_url_search(url_ref, entries_ref) + :undefined + end + + method "toString" do + result = QuickBEAM.URL.compose_query([load_entries_ref(entries_ref)]) + IO.iodata_to_binary(result) + end + + method "entries" do + entries_ref + |> load_entries_ref() + |> search_param_pairs() + |> iterator_from() + end + + method "keys" do + entries_ref + |> load_entries_ref() + |> Enum.map(fn [key, _] -> key end) + |> iterator_from() + end + + method "values" do + entries_ref + |> load_entries_ref() + |> Enum.map(fn [_, value] -> value end) + |> iterator_from() + end + + method "forEach" do + callback = arg(args, 0, nil) + + Enum.each(load_entries_ref(entries_ref), fn [key, value] -> + Callback.safe_invoke(callback, [value, key, this]) + end) + + :undefined + end + + symbol_method "Symbol.iterator" do + entries_ref + |> load_entries_ref() + |> search_param_pairs() + |> iterator_from() + end + + accessor "size" do + get do + length(load_entries_ref(entries_ref)) + end + end + + prop("__entries__", {:obj, entries_ref}) + end + |> Heap.wrap() + end + + defp sync_url_search(nil, _entries_ref), do: :ok + + defp sync_url_search(url_ref, entries_ref) do + es = load_entries_ref(entries_ref) + query_str = QuickBEAM.URL.compose_query([es]) |> IO.iodata_to_binary() + new_search = if query_str == "", do: "", else: "?" <> query_str + + c = Heap.get_obj(url_ref, %{}) || %{} + updated = Map.put(c, "search", new_search) + recomposed = recompose_url(updated) + Heap.put_obj(url_ref, recomposed) + end + + defp load_entries_ref(entries_ref) do + case Heap.get_obj(entries_ref, %{}) do + %{"entries" => list} when is_list(list) -> list + _ -> [] + end + end + + defp save_entries_ref(entries_ref, entries) do + Heap.put_obj(entries_ref, %{"entries" => entries}) + end + + defp search_param_pairs(entries) do + Enum.map(entries, fn [key, value] -> Heap.wrap([key, value]) end) + end + + defp extract_kv_pair({:obj, iref}) do + raw = Heap.get_obj(iref, []) + + list = + case raw do + {:qb_arr, _} -> Heap.obj_to_list(iref) + l when is_list(l) -> l + _ -> [] + end + + case list do + [k, v | _] -> [[to_string(k), to_string(v)]] + _ -> [] + end + end + + defp extract_kv_pair([k, v | _]), do: [[to_string(k), to_string(v)]] + defp extract_kv_pair(_), do: [] +end diff --git a/lib/quickbeam/vm/runtime/web/worker.ex b/lib/quickbeam/vm/runtime/web/worker.ex new file mode 100644 index 000000000..cab6a779e --- /dev/null +++ b/lib/quickbeam/vm/runtime/web/worker.ex @@ -0,0 +1,224 @@ +defmodule QuickBEAM.VM.Runtime.Web.Worker do + @moduledoc "Worker constructor for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + import QuickBEAM.VM.Builtin, only: [arg: 3, argv: 2, object: 2] + + alias QuickBEAM.VM.Heap + alias QuickBEAM.VM.Runtime.Web.Callback + alias QuickBEAM.VM.Runtime.WebAPIs + + @workers_key :qb_beam_workers + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + %{"Worker" => WebAPIs.register("Worker", &build_worker/2)} + end + + defp build_worker([script | _], _this) do + script_str = + case script do + s when is_binary(s) -> s + _ -> to_string(script) + end + + parent_pid = self() + worker_ref = make_ref() + + onmessage_ref = make_ref() + onerror_ref = make_ref() + listeners_ref = make_ref() + + # Use Process.put directly to avoid Heap.put_obj converting lists to {:qb_arr, ...} + Process.put(onmessage_ref, nil) + Process.put(onerror_ref, nil) + Process.put(listeners_ref, []) + + # Spawn the worker process + worker_pid = spawn_worker(script_str, parent_pid, worker_ref) + + workers = Process.get(@workers_key, %{}) + Process.put(@workers_key, Map.put(workers, worker_ref, worker_pid)) + + # Register as a "message source" to be polled during drain_pending + register_worker_source(worker_ref, onmessage_ref, listeners_ref) + + object heap: true do + method "postMessage" do + data = arg(args, 0, :undefined) + workers = Process.get(@workers_key, %{}) + + case Map.get(workers, worker_ref) do + pid when is_pid(pid) -> send(pid, {:parent_post, data}) + _ -> :ok + end + + :undefined + end + + method "terminate" do + workers = Process.get(@workers_key, %{}) + + case Map.get(workers, worker_ref) do + pid when is_pid(pid) -> + Process.exit(pid, :kill) + Process.put(@workers_key, Map.delete(workers, worker_ref)) + + _ -> + :ok + end + + unregister_worker_source(worker_ref) + :undefined + end + + method "addEventListener" do + [type, callback] = argv(args, ["message", nil]) + + if to_string(type) == "message" do + listeners = Process.get(listeners_ref, []) + Process.put(listeners_ref, listeners ++ [callback]) + end + + :undefined + end + + method "removeEventListener" do + [_type, callback] = argv(args, ["message", nil]) + listeners = Process.get(listeners_ref, []) + Process.put(listeners_ref, Enum.reject(listeners, &(&1 == callback))) + :undefined + end + + accessor "onmessage" do + get do + Process.get(onmessage_ref, nil) + end + + set do + Process.put(onmessage_ref, arg(args, 0, nil)) + :undefined + end + end + + accessor "onerror" do + get do + Process.get(onerror_ref, nil) + end + + set do + Process.put(onerror_ref, arg(args, 0, nil)) + :undefined + end + end + end + end + + # ── Worker message sources (polled during drain_pending) ── + + @sources_key :qb_worker_sources + + defp register_worker_source(worker_ref, onmessage_ref, listeners_ref) do + sources = Process.get(@sources_key, []) + Process.put(@sources_key, sources ++ [{worker_ref, onmessage_ref, listeners_ref}]) + end + + defp unregister_worker_source(worker_ref) do + sources = Process.get(@sources_key, []) + Process.put(@sources_key, Enum.reject(sources, fn {ref, _, _} -> ref == worker_ref end)) + end + + @doc "Drain all pending worker messages. Called from drain_pending loop." + def drain_all_worker_messages do + sources = Process.get(@sources_key, []) + + Enum.each(sources, fn {worker_ref, onmessage_ref, listeners_ref} -> + drain_worker_source(worker_ref, onmessage_ref, listeners_ref) + end) + end + + defp drain_worker_source(worker_ref, onmessage_ref, listeners_ref) do + receive do + {:worker_msg_to_parent, ^worker_ref, data} -> + deliver_to_handlers(data, onmessage_ref, listeners_ref) + drain_worker_source(worker_ref, onmessage_ref, listeners_ref) + after + 0 -> :ok + end + end + + defp deliver_to_handlers(data, onmessage_ref, listeners_ref) do + handler = Process.get(onmessage_ref, nil) + listeners = Process.get(listeners_ref, []) + event = Heap.wrap(%{"type" => "message", "data" => data}) + + if handler != nil and handler != :undefined do + Callback.safe_invoke(handler, [event]) + end + + Enum.each(listeners, &Callback.safe_invoke(&1, [event])) + end + + # ── Worker process ── + + defp spawn_worker(script, parent_pid, worker_ref) do + spawn(fn -> + QuickBEAM.VM.Heap.reset() + + {:ok, child_rt} = + QuickBEAM.start( + mode: :beam, + handlers: %{ + "__worker_post" => fn [data] -> + send(parent_pid, {:worker_msg_to_parent, worker_ref, data}) + nil + end + } + ) + + bootstrap = """ + globalThis.self = globalThis; + self.postMessage = function(data) { + Beam.call("__worker_post", data); + }; + self.close = function() {}; + // Handle messages from parent via Beam.onMessage + Beam.onMessage(function(data) { + if (typeof self.onmessage === 'function') { + self.onmessage({ data: data, type: 'message' }); + } + }); + """ + + QuickBEAM.eval(child_rt, bootstrap) + + # Run the worker script + QuickBEAM.eval(child_rt, script) + + # Keep alive to handle parent postMessage + worker_loop(child_rt) + end) + end + + defp worker_loop(child_rt) do + receive do + {:parent_post, data} -> + # Deliver message to worker's onmessage handler + # Store data as a global, then call onmessage + store_and_deliver(child_rt, data) + worker_loop(child_rt) + + :terminate -> + QuickBEAM.stop(child_rt) + after + 30_000 -> + QuickBEAM.stop(child_rt) + end + end + + defp store_and_deliver(_child_rt, data) do + alias QuickBEAM.VM.Runtime.Web.BeamAPI + BeamAPI.deliver_beam_message(data) + end +end diff --git a/lib/quickbeam/vm/runtime/web_apis.ex b/lib/quickbeam/vm/runtime/web_apis.ex new file mode 100644 index 000000000..6e618acb5 --- /dev/null +++ b/lib/quickbeam/vm/runtime/web_apis.ex @@ -0,0 +1,67 @@ +defmodule QuickBEAM.VM.Runtime.WebAPIs do + @moduledoc "Aggregates all Web API builtins for BEAM mode." + + @behaviour QuickBEAM.VM.Runtime.BindingProvider + + alias QuickBEAM.VM.Runtime.Constructors + + alias QuickBEAM.VM.Runtime.Web.{ + Abort, + BeamAPI, + Blob, + BroadcastChannel, + Buffer, + Compression, + ConsoleAPI, + Crypto, + Encoding, + Events, + EventSourceAPI, + Fetch, + FormData, + Headers, + MessageChannel, + Navigator, + Performance, + Streams, + TextEncoding, + Timers, + URL, + Worker + } + + @doc "Registers this runtime subsystem in the supplied global environment." + def register(name, constructor), do: Constructors.register(name, constructor, %{}, nil) + + @providers [ + TextEncoding, + URL, + Encoding, + Timers, + Headers, + Abort, + Performance, + Blob, + Crypto, + Fetch, + Events, + FormData, + Streams, + BroadcastChannel, + Buffer, + MessageChannel, + Navigator, + Compression, + ConsoleAPI, + Worker, + EventSourceAPI, + BeamAPI + ] + + @doc "Returns the JavaScript global bindings provided by this module." + def bindings do + Enum.reduce(@providers, %{}, fn provider, bindings -> + Map.merge(bindings, provider.bindings()) + end) + end +end diff --git a/lib/quickbeam/vm/stacktrace.ex b/lib/quickbeam/vm/stacktrace.ex new file mode 100644 index 000000000..f75a4f478 --- /dev/null +++ b/lib/quickbeam/vm/stacktrace.ex @@ -0,0 +1,131 @@ +defmodule QuickBEAM.VM.Stacktrace do + @moduledoc "JS stack-trace capture and formatting: attaches `stack` to Error objects and supports `Error.prepareStackTrace`." + + import QuickBEAM.VM.Builtin, only: [object: 1] + + alias QuickBEAM.VM.{Bytecode, Heap} + alias QuickBEAM.VM.Execution.Trace + alias QuickBEAM.VM.Runtime + + @doc "Attaches a JavaScript stack string to an error object." + def attach_stack({:obj, ref} = error_obj, filter_fun \\ nil) do + stack = build_stack(error_obj, filter_fun) + Heap.update_obj(ref, %{}, &Map.put(&1, "stack", stack)) + error_obj + end + + @doc "Builds a JavaScript stack string from current VM frames." + def build_stack(error_obj, filter_fun \\ nil) do + frames = current_frames(filter_fun) + + case prepare_stack_trace() do + fun when fun != nil and fun != :undefined -> + Runtime.call_callback(fun, [error_obj, Heap.wrap(Enum.map(frames, &callsite_object/1))]) + + _ -> + format_stack(frames) + end + end + + @doc "Returns the current VM stacktrace frames." + def current_frames(filter_fun \\ nil) do + frames = Trace.get_frames() + limit = stack_trace_limit() + + frames + |> maybe_drop_until(filter_fun) + |> Enum.take(limit) + |> Enum.map(&frame_info/1) + end + + defp maybe_drop_until(frames, nil), do: frames + + defp maybe_drop_until(frames, filter_fun) do + case Enum.split_while(frames, fn %{fun: fun} -> fun !== filter_fun end) do + {_, []} -> frames + {before, [_matched | rest]} when before == [] -> rest + {_before, [_matched | rest]} -> rest + end + end + + defp frame_info(%{fun: fun_term, pc: pc}) do + fun = bytecode_fun(fun_term) + {line, col} = Bytecode.source_position(fun, pc) + + %{ + function: fun_term, + function_name: function_name(fun), + file_name: fun.filename || "", + line_number: line, + column_number: col + } + end + + defp bytecode_fun({:closure, _, %Bytecode.Function{} = fun}), do: fun + defp bytecode_fun(%Bytecode.Function{} = fun), do: fun + + defp function_name(%Bytecode.Function{name: name}) when is_binary(name) and name != "", do: name + defp function_name(_), do: nil + + defp prepare_stack_trace, do: error_static("prepareStackTrace", :undefined) + + defp stack_trace_limit do + case error_static("stackTraceLimit", 10) do + n when is_integer(n) and n >= 0 -> n + n when is_float(n) and n >= 0 -> trunc(n) + _ -> 10 + end + end + + defp error_static(key, default) do + case Heap.get_ctx() do + %{globals: globals} -> + case Map.get(globals, "Error") do + {:builtin, _, _} = ctor -> Map.get(Heap.get_ctor_statics(ctor), key, default) + _ -> default + end + + _ -> + default + end + end + + defp format_stack(frames) do + Enum.map_join(frames, "\n", fn frame -> + suffix = "#{frame.file_name}:#{frame.line_number}:#{frame.column_number}" + + case frame.function_name do + nil -> " at #{suffix}" + name -> " at #{name} (#{suffix})" + end + end) + end + + defp callsite_object(frame) do + object do + method "getFileName" do + frame.file_name + end + + method "getFunction" do + frame.function + end + + method "getFunctionName" do + frame.function_name || :undefined + end + + method "getLineNumber" do + frame.line_number + end + + method "getColumnNumber" do + frame.column_number + end + + method "isNative" do + false + end + end + end +end diff --git a/lib/quickbeam/vm/value.ex b/lib/quickbeam/vm/value.ex new file mode 100644 index 000000000..4a8519655 --- /dev/null +++ b/lib/quickbeam/vm/value.ex @@ -0,0 +1,39 @@ +defmodule QuickBEAM.VM.Value do + @moduledoc "Type definitions and guards for JS values in the BEAM VM." + + alias QuickBEAM.VM.Bytecode + + @type heap_ref :: reference() | pos_integer() + @type object :: {:obj, heap_ref()} + @type closure :: {:closure, map(), Bytecode.Function.t()} + @type builtin :: {:builtin, binary(), function() | map()} + @type bound :: {:bound, non_neg_integer(), term(), term(), list()} + @type symbol :: {:symbol, binary()} | {:symbol, binary(), reference()} + @type bigint :: {:bigint, integer()} + @type js_value :: + nil + | :undefined + | :nan + | :infinity + | :neg_infinity + | boolean() + | number() + | binary() + | object() + | closure() + | builtin() + | bound() + | symbol() + | bigint() + + defguard is_object(v) when is_tuple(v) and tuple_size(v) == 2 and elem(v, 0) == :obj + + defguard is_symbol(v) + when is_tuple(v) and (tuple_size(v) == 2 or tuple_size(v) == 3) and + elem(v, 0) == :symbol + + defguard is_bigint(v) when is_tuple(v) and tuple_size(v) == 2 and elem(v, 0) == :bigint + defguard is_closure(v) when is_tuple(v) and tuple_size(v) == 3 and elem(v, 0) == :closure + defguard is_builtin(v) when is_tuple(v) and tuple_size(v) == 3 and elem(v, 0) == :builtin + defguard is_nullish(v) when v == nil or v == :undefined +end diff --git a/lib/quickbeam/worker.zig b/lib/quickbeam/worker.zig index 030f39921..1e1d87cb8 100644 --- a/lib/quickbeam/worker.zig +++ b/lib/quickbeam/worker.zig @@ -419,7 +419,7 @@ pub const WorkerState = struct { self.set_ok_term(val, result); } - pub fn do_compile(self: *WorkerState, code: []const u8, result: *Result) void { + pub fn do_compile(self: *WorkerState, code: []const u8, filename: []const u8, result: *Result) void { const code_z = gpa.dupeZ(u8, code) catch { result.ok = false; result.json = "Out of memory"; @@ -428,7 +428,15 @@ pub const WorkerState = struct { defer gpa.free(code_z); const flags: c_int = qjs.JS_EVAL_TYPE_GLOBAL | qjs.JS_EVAL_FLAG_COMPILE_ONLY; - const func = qjs.JS_Eval(self.ctx, code_z.ptr, code.len, "", flags); + const fname = if (filename.len > 0) filename else ""; + const fname_z = gpa.dupeZ(u8, fname) catch { + result.ok = false; + result.json = "Out of memory"; + return; + }; + defer gpa.free(fname_z); + + const func = qjs.JS_Eval(self.ctx, code_z.ptr, code.len, fname_z.ptr, flags); defer qjs.JS_FreeValue(self.ctx, func); if (js.js_is_exception(func)) { @@ -965,8 +973,9 @@ pub fn worker_main(rd: *types.RuntimeData, owner_pid: beam.pid) void { }, .compile => |p| { var result = Result{}; - state.do_compile(p.code, &result); + state.do_compile(p.code, p.filename, &result); gpa.free(p.code); + if (p.filename.len > 0) gpa.free(p.filename); types.send_reply(p.caller_pid, p.ref_env, p.ref_term, result.ok, result.env, result.term, result.json); }, .call_fn => |p| { diff --git a/mix.exs b/mix.exs index b943dce5f..0b6b69486 100644 --- a/mix.exs +++ b/mix.exs @@ -12,6 +12,7 @@ defmodule QuickBEAM.MixProject do elixir: "~> 1.15", start_permanent: Mix.env() == :prod, deps: deps(), + elixirc_paths: elixirc_paths(Mix.env()), aliases: aliases(), dialyzer: [plt_add_apps: [:crypto, :inets, :ssl, :public_key]], name: "QuickBEAM", @@ -27,7 +28,7 @@ defmodule QuickBEAM.MixProject do def application do [ - extra_applications: [:logger, :inets, :ssl, :public_key, :xmerl], + extra_applications: [:logger, :inets, :ssl, :public_key, :xmerl, :tools, :runtime_tools], mod: {QuickBEAM.Application, []} ] end @@ -61,23 +62,30 @@ defmodule QuickBEAM.MixProject do ] end + defp elixirc_paths(:test), do: ["lib", "test/support"] + defp elixirc_paths(_), do: ["lib"] + defp deps do [ {:zigler_precompiled, "~> 0.1.2"}, + {:yaml_elixir, "~> 2.11", only: :test, runtime: false}, {:zigler, "~> 0.15.2", runtime: false, optional: true}, {:dialyxir, "~> 1.4", only: [:dev, :test], runtime: false}, {:credo, "~> 1.7", only: [:dev, :test], runtime: false}, {:ex_dna, "~> 1.1", only: [:dev, :test], runtime: false}, + {:jason, "~> 1.4"}, {:ex_slop, "~> 0.2", only: [:dev, :test], runtime: false}, {:oxc, ">= 0.7.0"}, - {:npm, "~> 0.5.2"}, + {:npm, "~> 0.6.0"}, {:mint_web_socket, "~> 1.0"}, {:nimble_pool, "~> 1.1"}, {:bandit, "~> 1.0", only: :test}, {:websock_adapter, "~> 0.5", only: :test}, {:benchee, "~> 1.3", only: :bench, runtime: false}, {:quickjs_ex, "~> 0.3.1", only: :bench, runtime: false}, - {:ex_doc, "~> 0.35", only: :dev, runtime: false} + {:ex_doc, "~> 0.35", only: :dev, runtime: false}, + {:reach, "~> 1.6", only: :dev, runtime: false}, + {:ex_ast, "~> 0.3", only: [:dev, :test]} ] end diff --git a/mix.lock b/mix.lock index 4608f5751..b9df11ab9 100644 --- a/mix.lock +++ b/mix.lock @@ -8,6 +8,7 @@ "dialyxir": {:hex, :dialyxir, "1.4.7", "dda948fcee52962e4b6c5b4b16b2d8fa7d50d8645bbae8b8685c3f9ecb7f5f4d", [:mix], [{:erlex, ">= 0.2.8", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "b34527202e6eb8cee198efec110996c25c5898f43a4094df157f8d28f27d9efe"}, "earmark_parser": {:hex, :earmark_parser, "1.4.44", "f20830dd6b5c77afe2b063777ddbbff09f9759396500cdbe7523efd58d7a339c", [:mix], [], "hexpm", "4778ac752b4701a5599215f7030989c989ffdc4f6df457c5f36938cc2d2a2750"}, "erlex": {:hex, :erlex, "0.2.8", "cd8116f20f3c0afe376d1e8d1f0ae2452337729f68be016ea544a72f767d9c12", [:mix], [], "hexpm", "9d66ff9fedf69e49dc3fd12831e12a8a37b76f8651dd21cd45fcf5561a8a7590"}, + "ex_ast": {:hex, :ex_ast, "0.3.0", "e3786564075ca54706e4af82c9408a067857f43b6721d3ed9f7b9045ea657f63", [:mix], [{:sourceror, "~> 1.7", [hex: :sourceror, repo: "hexpm", optional: false]}], "hexpm", "a278b850e00728649c6fc0d7bf06d4f267f1a08c4daaa99f91bd28f31170d857"}, "ex_dna": {:hex, :ex_dna, "1.1.0", "3ced06be2d1648074e79617a4f1592dbe929b08a0357d08ad79b3d0025966147", [:mix], [{:gen_lsp, "~> 0.11", [hex: :gen_lsp, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "0274e36c69bee3bb990097c8138a878c7ac416a8a234730a44e042f90b5eefe0"}, "ex_doc": {:hex, :ex_doc, "0.40.1", "67542e4b6dde74811cfd580e2c0149b78010fd13001fda7cfeb2b2c2ffb1344d", [:mix], [{:earmark_parser, "~> 1.4.44", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.0", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14 or ~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1 or ~> 1.0", [hex: :makeup_erlang, repo: "hexpm", optional: false]}, {:makeup_html, ">= 0.1.0", [hex: :makeup_html, repo: "hexpm", optional: true]}], "hexpm", "bcef0e2d360d93ac19f01a85d58f91752d930c0a30e2681145feea6bd3516e00"}, "ex_slop": {:hex, :ex_slop, "0.2.0", "28ee70d62975636242dabf47d24e247acfbfdffd9c7cdc5a0d1c396aa42b421d", [:mix], [{:credo, "~> 1.7", [hex: :credo, repo: "hexpm", optional: false]}], "hexpm", "da8ccad55b61eebf7972fee1ab723f5227e58ed052ea09be4f9fe315c5e89cc2"}, @@ -16,6 +17,7 @@ "hex_solver": {:hex, :hex_solver, "0.2.3", "0d2ee20fbceb251d573f03ef34852e325529c2874ab66d1b576384021318996c", [:mix], [], "hexpm", "9daeae2ea6b8ad3dc7f51a10484f6bc1d0f705c31063383830a7167ab93b887b"}, "hpax": {:hex, :hpax, "1.0.3", "ed67ef51ad4df91e75cc6a1494f851850c0bd98ebc0be6e81b026e765ee535aa", [:mix], [], "hexpm", "8eab6e1cfa8d5918c2ce4ba43588e894af35dbd8e91e6e55c817bca5847df34a"}, "jason": {:hex, :jason, "1.4.4", "b9226785a9aa77b6857ca22832cffa5d5011a667207eb2a0ad56adb5db443b8a", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "c5eb0cab91f094599f94d55bc63409236a8ec69a21a67814529e8d5f6cc90b3b"}, + "libgraph": {:hex, :libgraph, "0.16.0", "3936f3eca6ef826e08880230f806bfea13193e49bf153f93edcf0239d4fd1d07", [:mix], [], "hexpm", "41ca92240e8a4138c30a7e06466acc709b0cbb795c643e9e17174a178982d6bf"}, "makeup": {:hex, :makeup, "1.2.1", "e90ac1c65589ef354378def3ba19d401e739ee7ee06fb47f94c687016e3713d1", [:mix], [{:nimble_parsec, "~> 1.4", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "d36484867b0bae0fea568d10131197a4c2e47056a6fbe84922bf6ba71c8d17ce"}, "makeup_elixir": {:hex, :makeup_elixir, "1.0.1", "e928a4f984e795e41e3abd27bfc09f51db16ab8ba1aebdba2b3a575437efafc2", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "7284900d412a3e5cfd97fdaed4f5ed389b8f2b4cb49efc0eb3bd10e2febf9507"}, "makeup_erlang": {:hex, :makeup_erlang, "1.0.3", "4252d5d4098da7415c390e847c814bad3764c94a814a0b4245176215615e1035", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "953297c02582a33411ac6208f2c6e55f0e870df7f80da724ed613f10e6706afd"}, @@ -25,7 +27,7 @@ "nimble_options": {:hex, :nimble_options, "1.1.1", "e3a492d54d85fc3fd7c5baf411d9d2852922f66e69476317787a7b2bb000a61b", [:mix], [], "hexpm", "821b2470ca9442c4b6984882fe9bb0389371b8ddec4d45a9504f00a66f650b44"}, "nimble_parsec": {:hex, :nimble_parsec, "1.4.2", "8efba0122db06df95bfaa78f791344a89352ba04baedd3849593bfce4d0dc1c6", [:mix], [], "hexpm", "4b21398942dda052b403bbe1da991ccd03a053668d147d53fb8c4e0efe09c973"}, "nimble_pool": {:hex, :nimble_pool, "1.1.0", "bf9c29fbdcba3564a8b800d1eeb5a3c58f36e1e11d7b7fb2e084a643f645f06b", [:mix], [], "hexpm", "af2e4e6b34197db81f7aad230c1118eac993acc0dae6bc83bac0126d4ae0813a"}, - "npm": {:hex, :npm, "0.5.3", "74827fbefcab3e242e59efecb1c7f4a5d657ec1d73c0ceccd16b66171f9cde13", [:mix], [{:hex_solver, "~> 0.2", [hex: :hex_solver, repo: "hexpm", optional: false]}, {:npm_semver, "~> 0.1.0", [hex: :npm_semver, repo: "hexpm", optional: false]}, {:req, "~> 0.5", [hex: :req, repo: "hexpm", optional: false]}], "hexpm", "301c693d8eff0de93d2008e524716a2b36b942877841d0b16d1984e87d84d617"}, + "npm": {:hex, :npm, "0.6.0", "42ee6ffeff85e502ef9aaf72a096bd1da6ed6cb15cb83758ff23956a58c6f22c", [:mix], [{:hex_solver, "~> 0.2", [hex: :hex_solver, repo: "hexpm", optional: false]}, {:npm_semver, "~> 0.1.0", [hex: :npm_semver, repo: "hexpm", optional: false]}, {:req, "~> 0.5", [hex: :req, repo: "hexpm", optional: false]}], "hexpm", "9183d240d8d28faa28e5d47dde2b91723f7c8e29f400b471689f880a0f17f5ef"}, "npm_semver": {:hex, :npm_semver, "0.1.0", "3ab2c2a151d8c87c364209b2ca1a4fd2ab98507ed61afbd1ea12c1826e67200a", [:mix], [{:hex_solver, "~> 0.2", [hex: :hex_solver, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "77afbc4c523c19a572325190bc4c968ec027e1c6ef8538bcddacf835966072fa"}, "oxc": {:hex, :oxc, "0.10.0", "9313b5d08b3221158aa20fc0a646f16924feb0d7463a206a91e327e6ff1fcec2", [:mix], [{:rustler, "~> 0.36", [hex: :rustler, repo: "hexpm", optional: true]}, {:rustler_precompiled, "~> 0.8", [hex: :rustler_precompiled, repo: "hexpm", optional: false]}], "hexpm", "787b077ca07fda5d1c8ddb90987f4365ea872f76cc525be2928cfaa90acba4ac"}, "pegasus": {:hex, :pegasus, "0.2.6", "b4af6522326fbb2ffd1bb706e78ec05854fbcb4b03a7fe08f8db2e9de1d0be67", [:mix], [{:nimble_parsec, "~> 1.2", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "0ac159f0ccab7967cf90208327cc8a35788874814c8d78e19d47104d3fc049b9"}, @@ -33,14 +35,18 @@ "plug_crypto": {:hex, :plug_crypto, "2.1.1", "19bda8184399cb24afa10be734f84a16ea0a2bc65054e23a62bb10f06bc89491", [:mix], [], "hexpm", "6470bce6ffe41c8bd497612ffde1a7e4af67f36a15eea5f921af71cf3e11247c"}, "protoss": {:hex, :protoss, "1.1.0", "853533313989751c7da5b0e1ce71501a23f3dc41f128709478af40daccc6e959", [:mix], [], "hexpm", "c2f874383dd047fcfdf467b814dd33a208a4d24a467aef90d86185b41a0752ad"}, "quickjs_ex": {:hex, :quickjs_ex, "0.3.1", "4357d7636a2f811ed879ae4cd6a47b3b24125a794238c1838307ebb61343d1c2", [:mix], [{:jason, "~> 1.4", [hex: :jason, repo: "hexpm", optional: false]}, {:rustler, ">= 0.0.0", [hex: :rustler, repo: "hexpm", optional: true]}, {:rustler_precompiled, "~> 0.8", [hex: :rustler_precompiled, repo: "hexpm", optional: false]}], "hexpm", "e49dc454b2e2e527742c576b57cc19a1da857e62fdbd377725aae44bad585e46"}, + "reach": {:hex, :reach, "1.6.0", "4ec1b24746dc9cac68dcfacffe3c347c3a8d7a0781518666266746bb490d8b57", [:mix], [{:boxart, "~> 0.3", [hex: :boxart, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:libgraph, "~> 0.16.0", [hex: :libgraph, repo: "hexpm", optional: false]}, {:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: true]}], "hexpm", "2ceb69baf4d8c4b293e2727b79daf9e34744ebbb55365de884cac3a1cb96f170"}, "req": {:hex, :req, "0.5.17", "0096ddd5b0ed6f576a03dde4b158a0c727215b15d2795e59e0916c6971066ede", [:mix], [{:brotli, "~> 0.3.1", [hex: :brotli, repo: "hexpm", optional: true]}, {:ezstd, "~> 1.0", [hex: :ezstd, repo: "hexpm", optional: true]}, {:finch, "~> 0.17", [hex: :finch, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:mime, "~> 2.0.6 or ~> 2.1", [hex: :mime, repo: "hexpm", optional: false]}, {:nimble_csv, "~> 1.0", [hex: :nimble_csv, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm", "0b8bc6ffdfebbc07968e59d3ff96d52f2202d0536f10fef4dc11dc02a2a43e39"}, "rustler": {:hex, :rustler, "0.37.3", "5f4e6634d43b26f0a69834dd1d3ed4e1710b022a053bf4a670220c9540c92602", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "a6872c6f53dcf00486d1e7f9e046e20e01bf1654bdacc4193016c2e8002b32a2"}, "rustler_precompiled": {:hex, :rustler_precompiled, "0.9.0", "3a052eda09f3d2436364645cc1f13279cf95db310eb0c17b0d8f25484b233aa0", [:mix], [{:rustler, "~> 0.23", [hex: :rustler, repo: "hexpm", optional: true]}], "hexpm", "471d97315bd3bf7b64623418b3693eedd8e47de3d1cb79a0ac8f9da7d770d94c"}, + "sourceror": {:hex, :sourceror, "1.12.0", "da354c5f35aad3cc1132f5d5b0d8437d865e2661c263260480bab51b5eedb437", [:mix], [], "hexpm", "755703683bd014ebcd5de9acc24b68fb874a660a568d1d63f8f98cd8a6ef9cd0"}, "statistex": {:hex, :statistex, "1.1.0", "7fec1eb2f580a0d2c1a05ed27396a084ab064a40cfc84246dbfb0c72a5c761e5", [:mix], [], "hexpm", "f5950ea26ad43246ba2cce54324ac394a4e7408fdcf98b8e230f503a0cba9cf5"}, "telemetry": {:hex, :telemetry, "1.4.1", "ab6de178e2b29b58e8256b92b382ea3f590a47152ca3651ea857a6cae05ac423", [:rebar3], [], "hexpm", "2172e05a27531d3d31dd9782841065c50dd5c3c7699d95266b2edd54c2dafa1c"}, "thousand_island": {:hex, :thousand_island, "1.4.3", "2158209580f633be38d43ec4e3ce0a01079592b9657afff9080d5d8ca149a3af", [:mix], [{:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "6e4ce09b0fd761a58594d02814d40f77daff460c48a7354a15ab353bb998ea0b"}, "websock": {:hex, :websock, "0.5.3", "2f69a6ebe810328555b6fe5c831a851f485e303a7c8ce6c5f675abeb20ebdadc", [:mix], [], "hexpm", "6105453d7fac22c712ad66fab1d45abdf049868f253cf719b625151460b8b453"}, "websock_adapter": {:hex, :websock_adapter, "0.5.9", "43dc3ba6d89ef5dec5b1d0a39698436a1e856d000d84bf31a3149862b01a287f", [:mix], [{:bandit, ">= 0.6.0", [hex: :bandit, repo: "hexpm", optional: true]}, {:plug, "~> 1.14", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 2.6", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:websock, "~> 0.5", [hex: :websock, repo: "hexpm", optional: false]}], "hexpm", "5534d5c9adad3c18a0f58a9371220d75a803bf0b9a3d87e6fe072faaeed76a08"}, + "yamerl": {:hex, :yamerl, "0.10.0", "4ff81fee2f1f6a46f1700c0d880b24d193ddb74bd14ef42cb0bcf46e81ef2f8e", [:rebar3], [], "hexpm", "346adb2963f1051dc837a2364e4acf6eb7d80097c0f53cbdc3046ec8ec4b4e6e"}, + "yaml_elixir": {:hex, :yaml_elixir, "2.12.1", "d74f2d82294651b58dac849c45a82aaea639766797359baff834b64439f6b3f4", [:mix], [{:yamerl, "~> 0.10", [hex: :yamerl, repo: "hexpm", optional: false]}], "hexpm", "d9ac16563c737d55f9bfeed7627489156b91268a3a21cd55c54eb2e335207fed"}, "zig_get": {:hex, :zig_get, "0.15.2", "a6ccaa894213839ba95615bf9be2b2c9268e37ab9547a2344830202cfd6d7cc0", [:mix], [], "hexpm", "e6b0028f2d5a8da791ff8037deff5b492784017d8d241e598377a24bd765f56f"}, "zig_parser": {:hex, :zig_parser, "0.6.0", "b1296c64bf5c2592de2eb4bc8bbf79d85b1d6a3ab444c443becd7af579d85681", [:mix], [{:pegasus, "~> 0.2.4", [hex: :pegasus, repo: "hexpm", optional: false]}], "hexpm", "bb7a1523b69f7f8f6b74ba5bf9dabc83f512c0cd67d9eebba1c501a529a2f95e"}, "zigler": {:hex, :zigler, "0.15.2", "d3e8c7b6d88be2eea72c341376b7e7b0aa36248e26d5798b580cad9815311559", [:mix], [{:protoss, "~> 1.0", [hex: :protoss, repo: "hexpm", optional: false]}, {:zig_get, "0.15.2", [hex: :zig_get, repo: "hexpm", optional: false]}, {:zig_parser, "~> 0.6", [hex: :zig_parser, repo: "hexpm", optional: false]}], "hexpm", "6bf96df41e281a70147e8826e439e24945f0222e08d058fc544da84f5c7ea8dd"}, diff --git a/npm.lock b/npm.lock index 55dfb9313..28554b441 100644 --- a/npm.lock +++ b/npm.lock @@ -43,31 +43,31 @@ }, "@emnapi/core": { "dependencies": { - "@emnapi/wasi-threads": "1.2.0", + "@emnapi/wasi-threads": "1.2.1", "tslib": "^2.4.0" }, - "integrity": "sha512-mukuNALVsoix/w1BJwFzwXBN/dHeejQtuVzcDsfOEsdpCumXb/E9j8w11h5S54tT1xhifGfbbSm/ICrObRb3KA==", + "integrity": "sha512-yq6OkJ4p82CAfPl0u9mQebQHKPJkY7WrIuk205cTYnYe+k2Z8YBh11FrbRG/H6ihirqcacOgl2BIO8oyMQLeXw==", "optional_dependencies": {}, - "tarball": "https://registry.npmjs.org/@emnapi/core/-/core-1.9.1.tgz", - "version": "1.9.1" + "tarball": "https://registry.npmjs.org/@emnapi/core/-/core-1.10.0.tgz", + "version": "1.10.0" }, "@emnapi/runtime": { "dependencies": { "tslib": "^2.4.0" }, - "integrity": "sha512-VYi5+ZVLhpgK4hQ0TAjiQiZ6ol0oe4mBx7mVv7IflsiEp0OWoVsp/+f9Vc1hOhE0TtkORVrI1GvzyreqpgWtkA==", + "integrity": 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+ "@oxlint/binding-win32-arm64-msvc": "1.61.0", + "@oxlint/binding-win32-ia32-msvc": "1.61.0", + "@oxlint/binding-win32-x64-msvc": "1.61.0" + }, + "tarball": "https://registry.npmjs.org/oxlint/-/oxlint-1.61.0.tgz", + "version": "1.61.0" }, "oxlint-tsgolint": { "dependencies": {}, @@ -1576,6 +1568,13 @@ "tarball": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.2.tgz", "version": "2.3.2" }, + "preact": { + "dependencies": {}, + "integrity": "sha512-gQCLc/vWroE8lIpleXtdJhTFDogTdZG9AjMUpVkDf2iTCNwYNWA+u16dL41TqUDJO4gm2IgrcMv3uTpjd4Pwmg==", + "optional_dependencies": {}, + "tarball": "https://registry.npmjs.org/preact/-/preact-10.29.1.tgz", + "version": "10.29.1" + }, "promise": { "dependencies": { "asap": "~2.0.3" @@ -1745,14 +1744,15 @@ }, "resolve": { "dependencies": { + "es-errors": "^1.3.0", "is-core-module": "^2.16.1", "path-parse": "^1.0.7", "supports-preserve-symlinks-flag": "^1.0.0" }, - "integrity": 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"https://registry.npmjs.org/sqlite-napi/-/sqlite-napi-1.2.0.tgz", + "version": "1.2.0" }, "string-width": { "dependencies": { diff --git a/package.json b/package.json index a81a3c8d2..4286b39d7 100644 --- a/package.json +++ b/package.json @@ -9,7 +9,8 @@ "jscpd": "^4.0.8", "oxfmt": "^0.37.0", "oxlint": "^1.52.0", - "oxlint-tsgolint": "^0.16.0" + "oxlint-tsgolint": "^0.16.0", + "preact": "^10.29.1" }, "private": true, "scripts": { diff --git a/test/js/parser/annex_b/call_expression_assignment_target_test.exs b/test/js/parser/annex_b/call_expression_assignment_target_test.exs new file mode 100644 index 000000000..7842d3ad6 --- /dev/null +++ b/test/js/parser/annex_b/call_expression_assignment_target_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.AnnexB.CallExpressionAssignmentTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "accepts Annex B call expression assignment targets for web compatibility" do + for source <- ["f() = g();", "f() += g();"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "accepts Annex B call expression update targets for web compatibility" do + for source <- ["f()++;", "++f();"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "accepts Annex B call expression for-in/of targets for web compatibility" do + for source <- ["for (f() in object) {}", "for (f() of object) {}"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/classes/accessor_arity_test.exs b/test/js/parser/classes/accessor_arity_test.exs new file mode 100644 index 000000000..6c23f163f --- /dev/null +++ b/test/js/parser/classes/accessor_arity_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Classes.AccessorArityTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects class getter parameters" do + assert {:error, %AST.Program{}, errors} = Parser.parse("class C { get a(param = null) {} }") + assert Enum.any?(errors, &(&1.message == "invalid number of arguments for getter or setter")) + end + + test "rejects class setters without exactly one parameter" do + for source <- ["class C { set a() {} }", "class C { set a(value, extra) {} }"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "invalid number of arguments for getter or setter") + ) + end + end +end diff --git a/test/js/parser/classes/accessor_literal_key_test.exs b/test/js/parser/classes/accessor_literal_key_test.exs new file mode 100644 index 000000000..23d9a8e94 --- /dev/null +++ b/test/js/parser/classes/accessor_literal_key_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Classes.AccessorLiteralKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible class accessor literal keys" do + source = """ + class C { + get "value-name"() { return 1; } + static set 0(value) { this.value = value; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [getter, setter]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + key: %AST.Literal{value: "value-name"}, + kind: :get, + static: false + } = getter + + assert %AST.MethodDefinition{key: %AST.Literal{value: 0}, kind: :set, static: true} = setter + end +end diff --git a/test/js/parser/classes/anonymous_class_expression_extends_test.exs b/test/js/parser/classes/anonymous_class_expression_extends_test.exs new file mode 100644 index 000000000..726ad04e3 --- /dev/null +++ b/test/js/parser/classes/anonymous_class_expression_extends_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.Classes.AnonymousClassExpressionExtendsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible anonymous class expression with extends syntax" do + source = "value = class extends Base { method() { return super.method(); } };" + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ClassExpression{ + id: nil, + super_class: %AST.Identifier{name: "Base"}, + body: [ + %AST.MethodDefinition{ + key: %AST.Identifier{name: "method"}, + value: %AST.FunctionExpression{ + body: %AST.BlockStatement{ + body: [%AST.ReturnStatement{argument: %AST.CallExpression{}}] + } + } + } + ] + } + } + } = statement + end +end diff --git a/test/js/parser/classes/async_generator_body_binding_test.exs b/test/js/parser/classes/async_generator_body_binding_test.exs new file mode 100644 index 000000000..35e66ac1d --- /dev/null +++ b/test/js/parser/classes/async_generator_body_binding_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Classes.AsyncGeneratorBodyBindingTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects await bindings and labels in async method bodies" do + for source <- [ + "class C { async m() { var await; } }", + "class C { async m() { await: statement; } }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end + end + + test "rejects yield bindings and labels in async generator method bodies" do + for source <- [ + "class C { async *m() { var yield; } }", + "class C { async *m() { yield: statement; } }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "yield parameter not allowed in generator function") + ) + end + end +end diff --git a/test/js/parser/classes/async_generator_private_method_test.exs b/test/js/parser/classes/async_generator_private_method_test.exs new file mode 100644 index 000000000..cc31eee83 --- /dev/null +++ b/test/js/parser/classes/async_generator_private_method_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Classes.AsyncGeneratorPrivateMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible async generator private method syntax" do + source = """ + class C { + async *#method(value) { yield await value; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + key: %AST.PrivateIdentifier{name: "method"}, + value: %AST.FunctionExpression{async: true, generator: true} + } = method + end +end diff --git a/test/js/parser/classes/async_method_super_call_param_test.exs b/test/js/parser/classes/async_method_super_call_param_test.exs new file mode 100644 index 000000000..b367550c9 --- /dev/null +++ b/test/js/parser/classes/async_method_super_call_param_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Classes.AsyncMethodSuperCallParamTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects direct super calls in async class method parameter defaults" do + assert {:error, %AST.Program{}, errors} = + Parser.parse("class A { async method(x = super()) {} }") + + assert Enum.any?(errors, &(&1.message == "super not allowed outside class method")) + end + + test "allows super property calls in async class method parameter defaults" do + assert {:ok, %AST.Program{}} = + Parser.parse("class B extends A { async method(x = super.method()) {} }") + end +end diff --git a/test/js/parser/classes/async_method_super_parameter_test.exs b/test/js/parser/classes/async_method_super_parameter_test.exs new file mode 100644 index 000000000..5847f24a0 --- /dev/null +++ b/test/js/parser/classes/async_method_super_parameter_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Classes.AsyncMethodSuperParameterTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows super calls in async class method parameter defaults" do + source = + "class Base { async method() {} } class Derived extends Base { async method(x = super.method()) {} }" + + assert {:ok, %AST.Program{}} = Parser.parse(source) + end +end diff --git a/test/js/parser/classes/async_numeric_method_key_test.exs b/test/js/parser/classes/async_numeric_method_key_test.exs new file mode 100644 index 000000000..51c22e66e --- /dev/null +++ b/test/js/parser/classes/async_numeric_method_key_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.Classes.AsyncNumericMethodKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible async numeric class method names" do + source = """ + class C { + async 0() { return 1; } + static async *1.5() { yield 2; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [method, static_method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + key: %AST.Literal{value: 0}, + value: %AST.FunctionExpression{async: true, generator: false} + } = method + + assert %AST.MethodDefinition{ + key: %AST.Literal{value: 1.5}, + static: true, + value: %AST.FunctionExpression{async: true, generator: true} + } = + static_method + end +end diff --git a/test/js/parser/classes/async_private_method_test.exs b/test/js/parser/classes/async_private_method_test.exs new file mode 100644 index 000000000..ffe66e5cb --- /dev/null +++ b/test/js/parser/classes/async_private_method_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Classes.AsyncPrivateMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible async private method syntax" do + source = """ + class C { + async #method(value) { return await value; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + key: %AST.PrivateIdentifier{name: "method"}, + value: %AST.FunctionExpression{async: true} + } = method + end +end diff --git a/test/js/parser/classes/async_string_method_key_test.exs b/test/js/parser/classes/async_string_method_key_test.exs new file mode 100644 index 000000000..63fa506db --- /dev/null +++ b/test/js/parser/classes/async_string_method_key_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.Classes.AsyncStringMethodKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible async string class method names" do + source = """ + class C { + async "method-name"() { return 1; } + static async "static-name"() { return 2; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [method, static_method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + key: %AST.Literal{value: "method-name"}, + static: false, + value: %AST.FunctionExpression{async: true} + } = method + + assert %AST.MethodDefinition{ + key: %AST.Literal{value: "static-name"}, + static: true, + value: %AST.FunctionExpression{async: true} + } = + static_method + end +end diff --git a/test/js/parser/classes/auto_accessor_field_test.exs b/test/js/parser/classes/auto_accessor_field_test.exs new file mode 100644 index 000000000..4008dc4a4 --- /dev/null +++ b/test/js/parser/classes/auto_accessor_field_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.Classes.AutoAccessorFieldTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "parses public auto-accessor field syntax" do + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: elements}]}} = + Parser.parse("class C { accessor x; accessor 'y' = 1; accessor [name] = 2; }") + + assert [ + %AST.FieldDefinition{key: %AST.Identifier{name: "x"}, value: nil}, + %AST.FieldDefinition{key: %AST.Literal{value: "y"}, value: %AST.Literal{value: 1}}, + %AST.FieldDefinition{key: %AST.Identifier{name: "name"}, computed: true} + ] = elements + end + + test "parses private auto-accessor field syntax" do + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [field]}]}} = + Parser.parse("class C { accessor #x = 1; }") + + assert %AST.FieldDefinition{ + key: %AST.PrivateIdentifier{name: "x"}, + value: %AST.Literal{value: 1} + } = + field + end + + test "keeps accessor as a normal field name when it has no auto-accessor key" do + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [field]}]}} = + Parser.parse("class C { accessor = 1; }") + + assert %AST.FieldDefinition{ + key: %AST.Identifier{name: "accessor"}, + value: %AST.Literal{value: 1} + } = + field + end +end diff --git a/test/js/parser/classes/boolean_property_name_test.exs b/test/js/parser/classes/boolean_property_name_test.exs new file mode 100644 index 000000000..f8055a4da --- /dev/null +++ b/test/js/parser/classes/boolean_property_name_test.exs @@ -0,0 +1,37 @@ +defmodule QuickBEAM.JS.Parser.Classes.BooleanPropertyNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "parses boolean literal names after dot property access" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.MemberExpression{ + property: %AST.Identifier{name: "false"} + } + } + ] + }} = Parser.parse("C.prototype.false;") + end + + test "parses computed accessor names using in expressions" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ClassDeclaration{ + body: [ + %AST.MethodDefinition{ + kind: :get, + key: %AST.BinaryExpression{operator: "in"} + } + ] + } + ] + }} = Parser.parse(~s|class C { get ["x" in empty]() { return value; } }|) + end +end diff --git a/test/js/parser/classes/class_descriptor_chain_test.exs b/test/js/parser/classes/class_descriptor_chain_test.exs new file mode 100644 index 000000000..a2da0861c --- /dev/null +++ b/test/js/parser/classes/class_descriptor_chain_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Classes.ClassDescriptorChainTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class descriptor member chain syntax" do + source = ~s|Object.getOwnPropertyDescriptor(C.prototype, "y").get.name === "get y";| + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{ + operator: "===", + left: %AST.MemberExpression{ + property: %AST.Identifier{name: "name"}, + object: %AST.MemberExpression{ + property: %AST.Identifier{name: "get"}, + object: %AST.CallExpression{ + callee: %AST.MemberExpression{ + property: %AST.Identifier{name: "getOwnPropertyDescriptor"} + }, + arguments: [ + %AST.MemberExpression{property: %AST.Identifier{name: "prototype"}}, + %AST.Literal{value: "y"} + ] + } + } + }, + right: %AST.Literal{value: "get y"} + } + } = statement + end +end diff --git a/test/js/parser/classes/class_element_decorator_test.exs b/test/js/parser/classes/class_element_decorator_test.exs new file mode 100644 index 000000000..df6118175 --- /dev/null +++ b/test/js/parser/classes/class_element_decorator_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Classes.ClassElementDecoratorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class element call decorators" do + source = """ + function decorator() { return () => {}; } + var $ = decorator; + class C { + @$() method() {} + @$() static method() {} + @$() field; + @$() static field; + } + """ + + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{}, + %AST.VariableDeclaration{}, + %AST.ClassDeclaration{ + body: [ + %AST.MethodDefinition{}, + %AST.MethodDefinition{static: true}, + %AST.FieldDefinition{}, + %AST.FieldDefinition{static: true} + ] + } + ] + }} = Parser.parse(source) + end +end diff --git a/test/js/parser/classes/class_element_name_test.exs b/test/js/parser/classes/class_element_name_test.exs new file mode 100644 index 000000000..a00f32eed --- /dev/null +++ b/test/js/parser/classes/class_element_name_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Classes.ClassElementNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects static prototype class elements" do + for source <- [ + "var C = class { static prototype; };", + "var C = class { static prototype() {} };" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message in ["invalid field name", "invalid method name"])) + end + end + + test "rejects private constructor class elements" do + for source <- [ + "var C = class { #constructor; };", + "var C = class { static #constructor() {} };" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message in ["invalid field name", "invalid method name"])) + end + end +end diff --git a/test/js/parser/classes/class_features_test.exs b/test/js/parser/classes/class_features_test.exs new file mode 100644 index 000000000..cdeab5407 --- /dev/null +++ b/test/js/parser/classes/class_features_test.exs @@ -0,0 +1,50 @@ +defmodule QuickBEAM.JS.Parser.Classes.ClassFeaturesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class extends static method getter and field syntax" do + source = """ + class C { static F() { return -1; } get y() { return 12; } } + class D extends C { static G() { return -2; } h() { return super.f(); } static H() { return super["F"](); } } + class S { static x = 42; static y = S.x; } + """ + + assert {:ok, %AST.Program{body: [c, d, s]}} = Parser.parse(source) + + assert %AST.ClassDeclaration{ + id: %AST.Identifier{name: "C"}, + body: [ + %AST.MethodDefinition{key: %AST.Identifier{name: "F"}, static: true}, + %AST.MethodDefinition{key: %AST.Identifier{name: "y"}, kind: :get} + ] + } = c + + assert %AST.ClassDeclaration{super_class: %AST.Identifier{name: "C"}, body: d_body} = d + + assert Enum.any?( + d_body, + &match?(%AST.MethodDefinition{key: %AST.Identifier{name: "H"}, static: true}, &1) + ) + + assert %AST.ClassDeclaration{ + body: [ + %AST.FieldDefinition{key: %AST.Identifier{name: "x"}, static: true}, + %AST.FieldDefinition{key: %AST.Identifier{name: "y"}, static: true} + ] + } = s + end + + test "ports QuickJS class expression name scope syntax" do + assert {:ok, %AST.Program{body: [declaration]}} = + Parser.parse("var E1 = class E { static F() { return E; } };") + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{init: %AST.ClassExpression{id: %AST.Identifier{name: "E"}}} + ] + } = declaration + end +end diff --git a/test/js/parser/classes/class_heritage_test.exs b/test/js/parser/classes/class_heritage_test.exs new file mode 100644 index 000000000..e2bc60781 --- /dev/null +++ b/test/js/parser/classes/class_heritage_test.exs @@ -0,0 +1,25 @@ +defmodule QuickBEAM.JS.Parser.Classes.ClassHeritageTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects unparenthesized arrow functions in class heritage" do + for source <- [ + "var C = class extends () => {} {};", + "var C = class extends async () => {} {};" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid class heritage")) + end + end + + test "allows parenthesized arrow functions in class heritage" do + for source <- [ + "var C = class extends (() => {}) {};", + "var C = class extends (async () => {}) {};" + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/classes/class_method_yield_parameter_test.exs b/test/js/parser/classes/class_method_yield_parameter_test.exs new file mode 100644 index 000000000..acb9be835 --- /dev/null +++ b/test/js/parser/classes/class_method_yield_parameter_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Classes.ClassMethodYieldParameterTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects yield in class method parameter initializers" do + for source <- ["class C { m(x = yield) {} }", "class C { static m(x = yield) {} }"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "yield parameter not allowed in generator function") + ) + end + end +end diff --git a/test/js/parser/classes/class_reserved_name_test.exs b/test/js/parser/classes/class_reserved_name_test.exs new file mode 100644 index 000000000..fea3ae149 --- /dev/null +++ b/test/js/parser/classes/class_reserved_name_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Classes.ClassReservedNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects restricted class binding names" do + for source <- ["class let {}", "class static {}", "class yield {}", "value = class let {};"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "expected class name")) + end + end +end diff --git a/test/js/parser/classes/class_static_this_field_test.exs b/test/js/parser/classes/class_static_this_field_test.exs new file mode 100644 index 000000000..be63210bb --- /dev/null +++ b/test/js/parser/classes/class_static_this_field_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Classes.ClassStaticThisFieldTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS static class field this-member syntax" do + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [field]}]}} = + Parser.parse("class S { static z = this.x; }") + + assert %AST.FieldDefinition{ + static: true, + key: %AST.Identifier{name: "z"}, + value: %AST.MemberExpression{ + object: %AST.Identifier{name: "this"}, + property: %AST.Identifier{name: "x"} + } + } = field + end +end diff --git a/test/js/parser/classes/computed_class_element_test.exs b/test/js/parser/classes/computed_class_element_test.exs new file mode 100644 index 000000000..35ab459bd --- /dev/null +++ b/test/js/parser/classes/computed_class_element_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Classes.ComputedClassElementTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible computed class element syntax" do + source = """ + class C { + [method]() {} + static [field] = 1; + get [value]() { return 1; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [method, field, getter]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{key: %AST.Identifier{name: "method"}, computed: true} = method + + assert %AST.FieldDefinition{key: %AST.Identifier{name: "field"}, computed: true, static: true} = + field + + assert %AST.MethodDefinition{key: %AST.Identifier{name: "value"}, computed: true, kind: :get} = + getter + end +end diff --git a/test/js/parser/classes/computed_static_field_name_test.exs b/test/js/parser/classes/computed_static_field_name_test.exs new file mode 100644 index 000000000..95b8f8fb8 --- /dev/null +++ b/test/js/parser/classes/computed_static_field_name_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Classes.ComputedStaticFieldNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows computed static constructor and prototype fields" do + for source <- [ + "class C { static ['constructor']; }", + "class C { static ['constructor'] = 42; }", + "class C { static ['prototype']; }", + "class C { static ['prototype'] = 42; }" + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "keeps non-computed static prototype and constructor fields invalid" do + for source <- ["class C { static prototype; }", "class C { static constructor; }"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid field name")) + end + end +end diff --git a/test/js/parser/classes/computed_static_prototype_test.exs b/test/js/parser/classes/computed_static_prototype_test.exs new file mode 100644 index 000000000..7fa72be6e --- /dev/null +++ b/test/js/parser/classes/computed_static_prototype_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Classes.ComputedStaticPrototypeTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows computed static prototype accessors" do + for source <- [ + "class C { static get ['prototype']() {} }", + "class C { static set ['prototype'](value) {} }" + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "keeps non-computed static prototype methods invalid" do + assert {:error, %AST.Program{}, errors} = Parser.parse("class C { static prototype() {} }") + assert Enum.any?(errors, &(&1.message == "invalid method name")) + end +end diff --git a/test/js/parser/classes/constructor_accessor_not_duplicate_test.exs b/test/js/parser/classes/constructor_accessor_not_duplicate_test.exs new file mode 100644 index 000000000..3b145a505 --- /dev/null +++ b/test/js/parser/classes/constructor_accessor_not_duplicate_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Classes.ConstructorAccessorNotDuplicateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS rejection of constructor plus constructor accessor syntax" do + source = "class C { constructor() {} get constructor() { return 1; } }" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid method name")) + end +end diff --git a/test/js/parser/classes/constructor_accessor_test.exs b/test/js/parser/classes/constructor_accessor_test.exs new file mode 100644 index 000000000..e140ab3f2 --- /dev/null +++ b/test/js/parser/classes/constructor_accessor_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Classes.ConstructorAccessorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS rejection of class accessors named constructor" do + for source <- [ + "class C { get constructor() { return 1; } }", + "class C { set constructor(value) { this.value = value; } }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid method name")) + end + end +end diff --git a/test/js/parser/classes/constructor_field_test.exs b/test/js/parser/classes/constructor_field_test.exs new file mode 100644 index 000000000..c4db28a17 --- /dev/null +++ b/test/js/parser/classes/constructor_field_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Classes.ConstructorFieldTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS rejection of class fields named constructor" do + for source <- [ + "class C { constructor = 1; }", + "class C { static constructor = 2; }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid field name")) + end + end +end diff --git a/test/js/parser/classes/constructor_new_target_test.exs b/test/js/parser/classes/constructor_new_target_test.exs new file mode 100644 index 000000000..f17d9ce06 --- /dev/null +++ b/test/js/parser/classes/constructor_new_target_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Classes.ConstructorNewTargetTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible new.target in constructor syntax" do + source = """ + class C { + constructor() { this.target = new.target; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [constructor]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + kind: :constructor, + value: %AST.FunctionExpression{ + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.MetaProperty{ + meta: %AST.Identifier{name: "new"}, + property: %AST.Identifier{name: "target"} + } + } + } + ] + } + } + } = constructor + end +end diff --git a/test/js/parser/classes/constructor_super_call_test.exs b/test/js/parser/classes/constructor_super_call_test.exs new file mode 100644 index 000000000..0dfc67833 --- /dev/null +++ b/test/js/parser/classes/constructor_super_call_test.exs @@ -0,0 +1,46 @@ +defmodule QuickBEAM.JS.Parser.Classes.ConstructorSuperCallTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible constructor super call syntax" do + source = """ + class D extends C { + constructor(value) { super(value); this.value = value; } + } + """ + + assert {:ok, + %AST.Program{ + body: [ + %AST.ClassDeclaration{ + super_class: %AST.Identifier{name: "C"}, + body: [constructor] + } + ] + }} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + kind: :constructor, + key: %AST.Identifier{name: "constructor"}, + value: %AST.FunctionExpression{ + params: [%AST.Identifier{name: "value"}], + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.Identifier{name: "super"}} + }, + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.MemberExpression{object: %AST.Identifier{name: "this"}} + } + } + ] + } + } + } = constructor + end +end diff --git a/test/js/parser/classes/contextual_class_field_test.exs b/test/js/parser/classes/contextual_class_field_test.exs new file mode 100644 index 000000000..109a16a4d --- /dev/null +++ b/test/js/parser/classes/contextual_class_field_test.exs @@ -0,0 +1,49 @@ +defmodule QuickBEAM.JS.Parser.Classes.ContextualClassFieldTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS contextual get set async class field syntax" do + source = """ + class P { + get; + set; + async; + get = () => "123"; + set = () => "456"; + async = () => "789"; + static() { return 42; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: members}]}} = + Parser.parse(source) + + assert [get_field, set_field, async_field, get_arrow, set_arrow, async_arrow, static_method] = + members + + assert %AST.FieldDefinition{key: %AST.Identifier{name: "get"}, value: nil} = get_field + assert %AST.FieldDefinition{key: %AST.Identifier{name: "set"}, value: nil} = set_field + assert %AST.FieldDefinition{key: %AST.Identifier{name: "async"}, value: nil} = async_field + + assert %AST.FieldDefinition{ + key: %AST.Identifier{name: "get"}, + value: %AST.ArrowFunctionExpression{} + } = get_arrow + + assert %AST.FieldDefinition{ + key: %AST.Identifier{name: "set"}, + value: %AST.ArrowFunctionExpression{} + } = set_arrow + + assert %AST.FieldDefinition{ + key: %AST.Identifier{name: "async"}, + value: %AST.ArrowFunctionExpression{} + } = async_arrow + + assert %AST.MethodDefinition{key: %AST.Identifier{name: "static"}, static: false} = + static_method + end +end diff --git a/test/js/parser/classes/decorator_syntax_test.exs b/test/js/parser/classes/decorator_syntax_test.exs new file mode 100644 index 000000000..b587e9ea3 --- /dev/null +++ b/test/js/parser/classes/decorator_syntax_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Classes.DecoratorSyntaxTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "parses decorated class expressions with member and call decorators" do + source = "var C = @$() @ns.await @(yield) class {};" + + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{init: %AST.ClassExpression{}} + ] + } + ] + }} = Parser.parse(source) + end + + test "parses decorated class expressions with private member decorators" do + source = "class C { static #x() {} static { var D = @C.#x class {}; } }" + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{}]}} = Parser.parse(source) + end +end diff --git a/test/js/parser/classes/escaped_reserved_method_name_test.exs b/test/js/parser/classes/escaped_reserved_method_name_test.exs new file mode 100644 index 000000000..dc7f29083 --- /dev/null +++ b/test/js/parser/classes/escaped_reserved_method_name_test.exs @@ -0,0 +1,12 @@ +defmodule QuickBEAM.JS.Parser.Classes.EscapedReservedMethodNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows escaped reserved words as class method property names" do + for source <- ["class C { th\\u0069s() {} }", "class C { en\\u0075m() {} }"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/classes/escaped_static_modifier_test.exs b/test/js/parser/classes/escaped_static_modifier_test.exs new file mode 100644 index 000000000..46d5d9d38 --- /dev/null +++ b/test/js/parser/classes/escaped_static_modifier_test.exs @@ -0,0 +1,11 @@ +defmodule QuickBEAM.JS.Parser.Classes.EscapedStaticModifierTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects escaped static as a class method modifier" do + assert {:error, %AST.Program{}, errors} = Parser.parse("class C { st\\u0061tic m() {} }") + assert errors != [] + end +end diff --git a/test/js/parser/classes/expression_extends_test.exs b/test/js/parser/classes/expression_extends_test.exs new file mode 100644 index 000000000..522605fc8 --- /dev/null +++ b/test/js/parser/classes/expression_extends_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Classes.ExpressionExtendsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible class extends expression syntax" do + source = """ + class D extends mixin(Base) {} + value = class extends namespace.Base {}; + """ + + assert {:ok, %AST.Program{body: [declaration, expression]}} = Parser.parse(source) + + assert %AST.ClassDeclaration{ + id: %AST.Identifier{name: "D"}, + super_class: %AST.CallExpression{callee: %AST.Identifier{name: "mixin"}} + } = declaration + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ClassExpression{ + super_class: %AST.MemberExpression{object: %AST.Identifier{name: "namespace"}} + } + } + } = expression + end +end diff --git a/test/js/parser/classes/field_asi_error_test.exs b/test/js/parser/classes/field_asi_error_test.exs new file mode 100644 index 000000000..7d9645663 --- /dev/null +++ b/test/js/parser/classes/field_asi_error_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Classes.FieldASIErrorTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "recovers from class field ASI continuation errors" do + for source <- [ + ~S|var C = class { x = "string" + [0]() {} }|, + "var C = class { x = 42\n*gen() {} }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert errors != [] + end + end +end diff --git a/test/js/parser/classes/field_await_identifier_test.exs b/test/js/parser/classes/field_await_identifier_test.exs new file mode 100644 index 000000000..707e36bc2 --- /dev/null +++ b/test/js/parser/classes/field_await_identifier_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Classes.FieldAwaitIdentifierTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports await identifier in class field inside async function script code" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{}, + %AST.FunctionDeclaration{ + async: true, + body: %AST.BlockStatement{ + body: [ + %AST.ReturnStatement{ + argument: %AST.ClassExpression{ + body: [ + %AST.FieldDefinition{ + value: %AST.Identifier{name: "await"} + } + ] + } + } + ] + } + } + ] + }} = + Parser.parse( + "var await = 1; async function getClass() { return class { x = await; }; }" + ) + end +end diff --git a/test/js/parser/classes/field_initializer_error_test.exs b/test/js/parser/classes/field_initializer_error_test.exs new file mode 100644 index 000000000..84af17556 --- /dev/null +++ b/test/js/parser/classes/field_initializer_error_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Classes.FieldInitializerErrorTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects super calls inside class field arrow initializers" do + source = "var C = class { x = () => super(); }" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "super call not allowed outside derived constructor") + ) + end + + test "rejects arguments inside class field arrow initializers" do + source = "var C = class { x = () => arguments; }" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "arguments is not allowed in class field initializer") + ) + end +end diff --git a/test/js/parser/classes/field_initializer_nested_error_test.exs b/test/js/parser/classes/field_initializer_nested_error_test.exs new file mode 100644 index 000000000..dabe0e675 --- /dev/null +++ b/test/js/parser/classes/field_initializer_nested_error_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Classes.FieldInitializerNestedErrorTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects super calls nested in class field expressions" do + for source <- [ + "class C { x = typeof super(); }", + "class C { x = condition ? value : super(); }", + "class C { x = (value === super()); }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "super call not allowed outside derived constructor") + ) + end + end + + test "rejects arguments nested in class field expressions" do + for source <- [ + "class C { x = typeof arguments; }", + "class C { x = condition ? value : arguments; }", + "class C { x = (value === arguments); }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "arguments is not allowed in class field initializer") + ) + end + end +end diff --git a/test/js/parser/classes/generator_literal_method_key_test.exs b/test/js/parser/classes/generator_literal_method_key_test.exs new file mode 100644 index 000000000..0dc5d35ef --- /dev/null +++ b/test/js/parser/classes/generator_literal_method_key_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Classes.GeneratorLiteralMethodKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible generator literal class method names" do + source = """ + class C { + *"string-name"() { yield 1; } + static *0() { yield 2; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [method, static_method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + key: %AST.Literal{value: "string-name"}, + value: %AST.FunctionExpression{generator: true} + } = method + + assert %AST.MethodDefinition{ + key: %AST.Literal{value: 0}, + static: true, + value: %AST.FunctionExpression{generator: true} + } = static_method + end +end diff --git a/test/js/parser/classes/generator_method_yield_name_test.exs b/test/js/parser/classes/generator_method_yield_name_test.exs new file mode 100644 index 000000000..16735c636 --- /dev/null +++ b/test/js/parser/classes/generator_method_yield_name_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Classes.GeneratorMethodYieldNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows yield as generator class method name" do + assert {:ok, %AST.Program{}} = Parser.parse("class A { *yield() { yield 1; } }") + end + + test "rejects yield as function expression name inside strict class method bodies" do + assert {:error, %AST.Program{}, errors} = + Parser.parse("class A { *g() { (function yield() {}); } }") + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end + + test "rejects yield assignment in nested function declarations inside strict class method bodies" do + assert {:error, %AST.Program{}, errors} = + Parser.parse("class A { *g() { function h() { yield = 1; } } }") + + assert Enum.any?(errors, &(&1.message == "restricted assignment target in strict mode")) + end +end diff --git a/test/js/parser/classes/instance_method_call_chain_test.exs b/test/js/parser/classes/instance_method_call_chain_test.exs new file mode 100644 index 000000000..ae811cfd6 --- /dev/null +++ b/test/js/parser/classes/instance_method_call_chain_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.Classes.InstanceMethodCallChainTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class instance method call-chain syntax" do + source = """ + new P().get(); + new P().set(); + new P().async(); + new P().static(); + """ + + assert {:ok, %AST.Program{body: statements}} = Parser.parse(source) + assert length(statements) == 4 + + assert Enum.map(statements, fn + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{ + object: %AST.NewExpression{callee: %AST.Identifier{name: "P"}}, + property: %AST.Identifier{name: name} + } + } + } -> + name + end) == ["get", "set", "async", "static"] + end +end diff --git a/test/js/parser/classes/literal_field_key_test.exs b/test/js/parser/classes/literal_field_key_test.exs new file mode 100644 index 000000000..9c6dce624 --- /dev/null +++ b/test/js/parser/classes/literal_field_key_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.Classes.LiteralFieldKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible literal class field names" do + source = """ + class C { + "field-name" = 1; + static 0 = 2; + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [field, static_field]}]}} = + Parser.parse(source) + + assert %AST.FieldDefinition{ + key: %AST.Literal{value: "field-name"}, + value: %AST.Literal{value: 1}, + static: false + } = field + + assert %AST.FieldDefinition{ + key: %AST.Literal{value: 0}, + value: %AST.Literal{value: 2}, + static: true + } = static_field + end +end diff --git a/test/js/parser/classes/meta_property_member_test.exs b/test/js/parser/classes/meta_property_member_test.exs new file mode 100644 index 000000000..539505495 --- /dev/null +++ b/test/js/parser/classes/meta_property_member_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Classes.MetaPropertyMemberTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible meta properties in class members" do + source = "class C { field = new.target; method() { return import.meta.url; } }" + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [field, method]}]}} = + Parser.parse(source) + + assert %AST.FieldDefinition{ + value: %AST.MetaProperty{ + meta: %AST.Identifier{name: "new"}, + property: %AST.Identifier{name: "target"} + } + } = field + + assert %AST.MethodDefinition{ + value: %AST.FunctionExpression{ + body: %AST.BlockStatement{ + body: [ + %AST.ReturnStatement{ + argument: %AST.MemberExpression{ + object: %AST.MetaProperty{meta: %AST.Identifier{name: "import"}} + } + } + ] + } + } + } = method + end +end diff --git a/test/js/parser/classes/multiple_static_blocks_test.exs b/test/js/parser/classes/multiple_static_blocks_test.exs new file mode 100644 index 000000000..055d8ae99 --- /dev/null +++ b/test/js/parser/classes/multiple_static_blocks_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Classes.MultipleStaticBlocksTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible multiple class static blocks" do + source = """ + class C { + static value = 0; + static { this.value += 1; } + method() { return this.value; } + static { this.done = true; } + } + """ + + assert {:ok, + %AST.Program{ + body: [%AST.ClassDeclaration{body: [field, first_block, method, second_block]}] + }} = + Parser.parse(source) + + assert %AST.FieldDefinition{static: true, key: %AST.Identifier{name: "value"}} = field + assert %AST.StaticBlock{body: [%AST.ExpressionStatement{}]} = first_block + assert %AST.MethodDefinition{key: %AST.Identifier{name: "method"}} = method + assert %AST.StaticBlock{body: [%AST.ExpressionStatement{}]} = second_block + end +end diff --git a/test/js/parser/classes/named_class_expression_static_block_test.exs b/test/js/parser/classes/named_class_expression_static_block_test.exs new file mode 100644 index 000000000..c6afd4f14 --- /dev/null +++ b/test/js/parser/classes/named_class_expression_static_block_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Classes.NamedClassExpressionStaticBlockTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible named class expression static block syntax" do + source = "value = class Named { static { this.value = 1; } };" + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ClassExpression{ + id: %AST.Identifier{name: "Named"}, + body: [ + %AST.StaticBlock{ + body: [%AST.ExpressionStatement{expression: %AST.AssignmentExpression{}}] + } + ] + } + } + } = statement + end +end diff --git a/test/js/parser/classes/non_constructor_method_names_test.exs b/test/js/parser/classes/non_constructor_method_names_test.exs new file mode 100644 index 000000000..0deb57051 --- /dev/null +++ b/test/js/parser/classes/non_constructor_method_names_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Classes.NonConstructorMethodNamesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS rejection of non-constructor methods named constructor" do + for source <- [ + "class C { *constructor() { yield 1; } }", + "class C { async constructor() { return 2; } }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid method name")) + end + end +end diff --git a/test/js/parser/classes/null_extends_test.exs b/test/js/parser/classes/null_extends_test.exs new file mode 100644 index 000000000..30efd3324 --- /dev/null +++ b/test/js/parser/classes/null_extends_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Classes.NullExtendsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible class extends null syntax" do + source = """ + class D extends null {} + value = class extends null {}; + """ + + assert {:ok, %AST.Program{body: [declaration, expression]}} = Parser.parse(source) + + assert %AST.ClassDeclaration{ + id: %AST.Identifier{name: "D"}, + super_class: %AST.Literal{value: nil, raw: "null"} + } = declaration + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ClassExpression{super_class: %AST.Literal{value: nil, raw: "null"}} + } + } = expression + end +end diff --git a/test/js/parser/classes/numeric_method_key_test.exs b/test/js/parser/classes/numeric_method_key_test.exs new file mode 100644 index 000000000..ef128dc9f --- /dev/null +++ b/test/js/parser/classes/numeric_method_key_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Classes.NumericMethodKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible numeric class method names" do + source = """ + class C { + 0() { return 0; } + 1.5() { return 1.5; } + static 0x10() { return 16; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [zero, decimal, hex]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{key: %AST.Literal{value: 0}, static: false} = zero + assert %AST.MethodDefinition{key: %AST.Literal{value: 1.5}, static: false} = decimal + assert %AST.MethodDefinition{key: %AST.Literal{value: 16}, static: true} = hex + end +end diff --git a/test/js/parser/classes/private_accessor_static_pair_test.exs b/test/js/parser/classes/private_accessor_static_pair_test.exs new file mode 100644 index 000000000..4b30f61f2 --- /dev/null +++ b/test/js/parser/classes/private_accessor_static_pair_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrivateAccessorStaticPairTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows matching static or instance private getter setter pairs" do + for source <- [ + "class C { get #f() {} set #f(value) {} }", + "class C { static get #f() {} static set #f(value) {} }" + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "rejects mixed static private getter setter pairs" do + for source <- [ + "class C { static get #f() {} set #f(value) {} }", + "class C { get #f() {} static set #f(value) {} }", + "class C { static set #f(value) {} get #f() {} }", + "class C { set #f(value) {} static get #f() {} }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "duplicate private name")) + end + end +end diff --git a/test/js/parser/classes/private_accessor_test.exs b/test/js/parser/classes/private_accessor_test.exs new file mode 100644 index 000000000..ca289cfdc --- /dev/null +++ b/test/js/parser/classes/private_accessor_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrivateAccessorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible private accessor syntax" do + source = """ + class C { + #stored; + get #value() { return 1; } + set #value(value) { this.#stored = value; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [stored, getter, setter]}]}} = + Parser.parse(source) + + assert %AST.FieldDefinition{key: %AST.PrivateIdentifier{name: "stored"}} = stored + assert %AST.MethodDefinition{kind: :get, key: %AST.PrivateIdentifier{name: "value"}} = getter + assert %AST.MethodDefinition{kind: :set, key: %AST.PrivateIdentifier{name: "value"}} = setter + end +end diff --git a/test/js/parser/classes/private_delete_test.exs b/test/js/parser/classes/private_delete_test.exs new file mode 100644 index 000000000..90064859e --- /dev/null +++ b/test/js/parser/classes/private_delete_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrivateDeleteTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects delete of private members in class fields and methods" do + for source <- [ + "var C = class { #x; x = delete this.#x; }", + "class C { #x; method() { delete this.#x; } }", + "class C { #x; method() { delete this.#x(); } }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "cannot delete a private class field")) + end + end + + test "allows ordinary delete in class elements" do + assert {:ok, %AST.Program{}} = Parser.parse("class C { method() { delete this.x; } }") + end +end diff --git a/test/js/parser/classes/private_field_test.exs b/test/js/parser/classes/private_field_test.exs new file mode 100644 index 000000000..9c129888d --- /dev/null +++ b/test/js/parser/classes/private_field_test.exs @@ -0,0 +1,59 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrivateFieldTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS new expression call chain coverage" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("assert(new Q().f(), 5);") + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.Identifier{name: "assert"}, + arguments: [ + %AST.CallExpression{callee: %AST.MemberExpression{object: %AST.NewExpression{}}}, + _ + ] + } + } = statement + end + + test "ports QuickJS private field division parse coverage" do + source = """ + class Q { + #x = 10; + f() { return (this.#x / 2); } + } + assert(new Q().f(), 5); + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{} = klass, assertion]}} = + Parser.parse(source) + + assert %AST.ClassDeclaration{ + id: %AST.Identifier{name: "Q"}, + body: [ + %AST.FieldDefinition{key: %AST.PrivateIdentifier{name: "x"}}, + %AST.MethodDefinition{ + key: %AST.Identifier{name: "f"}, + value: %AST.FunctionExpression{body: body} + } + ] + } = klass + + assert %AST.BlockStatement{ + body: [%AST.ReturnStatement{argument: %AST.BinaryExpression{operator: "/"}}] + } = body + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.Identifier{name: "assert"}, + arguments: [ + %AST.CallExpression{callee: %AST.MemberExpression{object: %AST.NewExpression{}}}, + _ + ] + } + } = assertion + end +end diff --git a/test/js/parser/classes/private_in_expression_test.exs b/test/js/parser/classes/private_in_expression_test.exs new file mode 100644 index 000000000..82baca12b --- /dev/null +++ b/test/js/parser/classes/private_in_expression_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrivateInExpressionTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects invalid private-in expression forms" do + for source <- [ + "class C { #field; m() { #field in #field in this; } }", + "class C { #field; m() { #field in () => {}; } }", + "class C { #field; m() { for (#field in []) ; } }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid private in expression")) + end + end + + test "ports QuickJS-compatible private-in expression syntax" do + assert {:ok, %AST.Program{}} = Parser.parse("class C { #field; m() { #field in this; } }") + end +end diff --git a/test/js/parser/classes/private_method_test.exs b/test/js/parser/classes/private_method_test.exs new file mode 100644 index 000000000..cace8a299 --- /dev/null +++ b/test/js/parser/classes/private_method_test.exs @@ -0,0 +1,37 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrivateMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible private method syntax" do + source = """ + class C { + #method(value) { return value; } + call(value) { return this.#method(value); } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [private_method, call_method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{key: %AST.PrivateIdentifier{name: "method"}} = private_method + + assert %AST.MethodDefinition{ + value: %AST.FunctionExpression{ + body: %AST.BlockStatement{ + body: [ + %AST.ReturnStatement{ + argument: %AST.CallExpression{ + callee: %AST.MemberExpression{ + property: %AST.PrivateIdentifier{name: "method"} + } + } + } + ] + } + } + } = call_method + end +end diff --git a/test/js/parser/classes/private_name_grammar_test.exs b/test/js/parser/classes/private_name_grammar_test.exs new file mode 100644 index 000000000..be2780604 --- /dev/null +++ b/test/js/parser/classes/private_name_grammar_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrivateNameGrammarTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects whitespace between private marker and name" do + for source <- [ + "var C = class { # x; };", + "var C = class { method() { this.# x; } };", + "var C = class { method() { this.# x(); } };" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert errors != [] + end + end + + test "rejects ZWNJ and ZWJ as private name starts" do + for source <- ["var C = class { #\\u200C_ZWNJ; };", "var C = class { #\\u200D_ZWJ; };"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert errors != [] + end + end +end diff --git a/test/js/parser/classes/private_name_nested_scope_test.exs b/test/js/parser/classes/private_name_nested_scope_test.exs new file mode 100644 index 000000000..0773dd852 --- /dev/null +++ b/test/js/parser/classes/private_name_nested_scope_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrivateNameNestedScopeTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects undeclared private names in nested functions inside class elements" do + for source <- [ + "var C = class { f = function() { this.#x; } };", + "var C = class { method() { function f() { this.#x; } } };" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "undeclared private name")) + end + end + + test "allows nested classes to access outer private names" do + source = "var C = class { #outer; Inner = class { method(o) { return o.#outer; } }; };" + assert {:ok, %AST.Program{}} = Parser.parse(source) + end +end diff --git a/test/js/parser/classes/private_name_validation_test.exs b/test/js/parser/classes/private_name_validation_test.exs new file mode 100644 index 000000000..eb7e03511 --- /dev/null +++ b/test/js/parser/classes/private_name_validation_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrivateNameValidationTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects undeclared private names in class expressions" do + for source <- [ + "var C = class { method() { this.#x; } };", + "var C = class extends this.#x {};" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "undeclared private name")) + end + end + + test "rejects duplicate private names in class expressions" do + assert {:error, %AST.Program{}, errors} = Parser.parse("var C = class { #x; #x; };") + assert Enum.any?(errors, &(&1.message == "duplicate private name")) + end +end diff --git a/test/js/parser/classes/private_super_access_test.exs b/test/js/parser/classes/private_super_access_test.exs new file mode 100644 index 000000000..39a4605e6 --- /dev/null +++ b/test/js/parser/classes/private_super_access_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrivateSuperAccessTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects private member access on super" do + for source <- [ + "class C extends B { #x() {} method() { super.#x(); } }", + "var C = class { Child = class extends B { method() { return super.#x; } } };" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "private class field forbidden after super")) + end + end + + test "rejects undeclared private names in computed class keys" do + assert {:error, %AST.Program{}, errors} = + Parser.parse("var C = class { [this.#f] = 'value'; };") + + assert Enum.any?(errors, &(&1.message == "undeclared private name")) + end +end diff --git a/test/js/parser/classes/private_unicode_identifier_test.exs b/test/js/parser/classes/private_unicode_identifier_test.exs new file mode 100644 index 000000000..54e9fe3c7 --- /dev/null +++ b/test/js/parser/classes/private_unicode_identifier_test.exs @@ -0,0 +1,33 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrivateUnicodeIdentifierTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible private unicode escape identifier syntax" do + source = """ + class C { + #\\u0061 = 1; + m() { return this.#\\u0061; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [field, method]}]}} = + Parser.parse(source) + + assert %AST.FieldDefinition{key: %AST.PrivateIdentifier{name: "a"}} = field + + assert %AST.MethodDefinition{ + value: %AST.FunctionExpression{ + body: %AST.BlockStatement{ + body: [ + %AST.ReturnStatement{ + argument: %AST.MemberExpression{property: %AST.PrivateIdentifier{name: "a"}} + } + ] + } + } + } = method + end +end diff --git a/test/js/parser/classes/prototype_test.exs b/test/js/parser/classes/prototype_test.exs new file mode 100644 index 000000000..88daf3de6 --- /dev/null +++ b/test/js/parser/classes/prototype_test.exs @@ -0,0 +1,38 @@ +defmodule QuickBEAM.JS.Parser.Classes.PrototypeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS prototype descriptor call syntax" do + source = """ + var g = function g() { }; + Object.defineProperty(g, "prototype", { writable: false }); + assert(f.prototype.constructor, f, "prototype"); + """ + + assert {:ok, %AST.Program{body: [_declaration, define_property, assertion]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{ + object: %AST.Identifier{name: "Object"}, + property: %AST.Identifier{name: "defineProperty"} + }, + arguments: [ + _, + _, + %AST.ObjectExpression{ + properties: [%AST.Property{key: %AST.Identifier{name: "writable"}}] + } + ] + } + } = define_property + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.Identifier{name: "assert"}} + } = assertion + end +end diff --git a/test/js/parser/classes/reserved_member_names_test.exs b/test/js/parser/classes/reserved_member_names_test.exs new file mode 100644 index 000000000..d760b0f82 --- /dev/null +++ b/test/js/parser/classes/reserved_member_names_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.Classes.ReservedMemberNamesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible reserved class member names" do + source = "class C { default() {} class = 1; static import() {} }" + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: members}]}} = + Parser.parse(source) + + assert [ + %AST.MethodDefinition{ + key: %AST.Identifier{name: "default"}, + kind: :method, + static: false + }, + %AST.FieldDefinition{ + key: %AST.Identifier{name: "class"}, + value: %AST.Literal{value: 1}, + static: false + }, + %AST.MethodDefinition{ + key: %AST.Identifier{name: "import"}, + kind: :method, + static: true + } + ] = members + end +end diff --git a/test/js/parser/classes/static_async_generator_private_method_test.exs b/test/js/parser/classes/static_async_generator_private_method_test.exs new file mode 100644 index 000000000..53e58baf6 --- /dev/null +++ b/test/js/parser/classes/static_async_generator_private_method_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticAsyncGeneratorPrivateMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible static async generator private method syntax" do + source = """ + class C { + static async *#method(value) { yield await value; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + static: true, + key: %AST.PrivateIdentifier{name: "method"}, + value: %AST.FunctionExpression{async: true, generator: true} + } = method + end +end diff --git a/test/js/parser/classes/static_async_private_method_test.exs b/test/js/parser/classes/static_async_private_method_test.exs new file mode 100644 index 000000000..c0d4e83d9 --- /dev/null +++ b/test/js/parser/classes/static_async_private_method_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticAsyncPrivateMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible static async private method syntax" do + source = """ + class C { + static async #method(value) { return await value; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + static: true, + key: %AST.PrivateIdentifier{name: "method"}, + value: %AST.FunctionExpression{async: true} + } = method + end +end diff --git a/test/js/parser/classes/static_block_await_test.exs b/test/js/parser/classes/static_block_await_test.exs new file mode 100644 index 000000000..7b69a54f3 --- /dev/null +++ b/test/js/parser/classes/static_block_await_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticBlockAwaitTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows await references in nested class constructor parameters inside static blocks" do + source = + "class C { static { new (class { constructor(x = await) { fromBody = await; } }); } }" + + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + + test "rejects await as a class binding name inside static blocks" do + assert {:error, %AST.Program{}, errors} = + Parser.parse("class C { static { (class await {}); } }") + + assert Enum.any?(errors, &(&1.message == "expected class name")) + end +end diff --git a/test/js/parser/classes/static_block_binding_context_test.exs b/test/js/parser/classes/static_block_binding_context_test.exs new file mode 100644 index 000000000..c2711faa7 --- /dev/null +++ b/test/js/parser/classes/static_block_binding_context_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticBlockBindingContextTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects await bindings and labels in static blocks" do + for source <- [ + "class C { static { await: 0; } }", + "class C { static { function await() {} } }", + "class C { static { try {} catch (await) {} } }" + ] do + assert {:error, %AST.Program{}, [_ | _]} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/classes/static_block_break_test.exs b/test/js/parser/classes/static_block_break_test.exs new file mode 100644 index 000000000..5c363c77e --- /dev/null +++ b/test/js/parser/classes/static_block_break_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticBlockBreakTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects unlabeled break in static blocks" do + for source <- [ + "class A { static { break; } }", + "label: while(false) { class A { static { break; } } }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "break statement not within loop or switch")) + end + end +end diff --git a/test/js/parser/classes/static_block_declarations_test.exs b/test/js/parser/classes/static_block_declarations_test.exs new file mode 100644 index 000000000..03a6ceea7 --- /dev/null +++ b/test/js/parser/classes/static_block_declarations_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticBlockDeclarationsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible static block declaration syntax" do + source = """ + class C { + static { + const value = 1; + function helper() { return value; } + this.value = helper(); + } + } + """ + + assert {:ok, + %AST.Program{body: [%AST.ClassDeclaration{body: [%AST.StaticBlock{body: body}]}]}} = + Parser.parse(source) + + assert [ + %AST.VariableDeclaration{kind: :const}, + %AST.FunctionDeclaration{id: %AST.Identifier{name: "helper"}}, + %AST.ExpressionStatement{expression: %AST.AssignmentExpression{}} + ] = body + end +end diff --git a/test/js/parser/classes/static_block_forbidden_context_test.exs b/test/js/parser/classes/static_block_forbidden_context_test.exs new file mode 100644 index 000000000..82eb73f98 --- /dev/null +++ b/test/js/parser/classes/static_block_forbidden_context_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticBlockForbiddenContextTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects return, await, yield, and arguments across static block boundaries" do + for source <- [ + "function f() { class C { static { return; } } }", + "async function f() { class C { static { await 0; } } }", + "function *g() { class C { static { yield; } } }", + "class C { static { const await = 0; } }", + "class C { static { (class { [arguments]() {} }); } }" + ] do + assert {:error, %AST.Program{}, [_ | _]} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/classes/static_block_test.exs b/test/js/parser/classes/static_block_test.exs new file mode 100644 index 000000000..3079fbcbd --- /dev/null +++ b/test/js/parser/classes/static_block_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticBlockTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible class static block syntax" do + source = """ + class C { + static { + this.value = 1; + } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [static_block]}]}} = + Parser.parse(source) + + assert %AST.StaticBlock{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.MemberExpression{ + object: %AST.Identifier{name: "this"}, + property: %AST.Identifier{name: "value"} + }, + right: %AST.Literal{value: 1} + } + } + ] + } = static_block + end +end diff --git a/test/js/parser/classes/static_constructor_method_test.exs b/test/js/parser/classes/static_constructor_method_test.exs new file mode 100644 index 000000000..b9769bd1c --- /dev/null +++ b/test/js/parser/classes/static_constructor_method_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticConstructorMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible static constructor method syntax" do + source = "class C { static constructor() { return 1; } }" + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + kind: :method, + static: true, + key: %AST.Identifier{name: "constructor"} + } = method + end +end diff --git a/test/js/parser/classes/static_constructor_not_duplicate_test.exs b/test/js/parser/classes/static_constructor_not_duplicate_test.exs new file mode 100644 index 000000000..22c6e2dab --- /dev/null +++ b/test/js/parser/classes/static_constructor_not_duplicate_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticConstructorNotDuplicateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible static constructor plus constructor syntax" do + source = "class C { constructor() {} static constructor() {} }" + + assert {:ok, + %AST.Program{body: [%AST.ClassDeclaration{body: [constructor, static_constructor]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + kind: :constructor, + static: false, + key: %AST.Identifier{name: "constructor"} + } = + constructor + + assert %AST.MethodDefinition{ + kind: :method, + static: true, + key: %AST.Identifier{name: "constructor"} + } = + static_constructor + end +end diff --git a/test/js/parser/classes/static_field_name_test.exs b/test/js/parser/classes/static_field_name_test.exs new file mode 100644 index 000000000..ac2c887a3 --- /dev/null +++ b/test/js/parser/classes/static_field_name_test.exs @@ -0,0 +1,46 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticFieldNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "parses static as an instance field name" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ClassDeclaration{ + body: [ + %AST.FieldDefinition{ + key: %AST.Identifier{name: "static"}, + static: false, + value: nil + } + ] + } + ] + }} = Parser.parse("class C { static; }") + end + + test "parses assigned static as an instance field name" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ClassExpression{ + body: [ + %AST.FieldDefinition{ + key: %AST.Identifier{name: "static"}, + static: false, + value: %AST.Literal{value: "foo"} + } + ] + } + } + } + ] + }} = Parser.parse(~s|value = class { static = "foo"; };|) + end +end diff --git a/test/js/parser/classes/static_method_call_chain_test.exs b/test/js/parser/classes/static_method_call_chain_test.exs new file mode 100644 index 000000000..07801ddfe --- /dev/null +++ b/test/js/parser/classes/static_method_call_chain_test.exs @@ -0,0 +1,33 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticMethodCallChainTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS static class method call syntax" do + source = """ + C.F(); + D.F(); + D.G(); + D.H(); + E1.F(); + """ + + assert {:ok, %AST.Program{body: statements}} = Parser.parse(source) + assert length(statements) == 5 + + assert Enum.map(statements, fn + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{ + object: %AST.Identifier{name: object}, + property: %AST.Identifier{name: property} + }, + arguments: [] + } + } -> + {object, property} + end) == [{"C", "F"}, {"D", "F"}, {"D", "G"}, {"D", "H"}, {"E1", "F"}] + end +end diff --git a/test/js/parser/classes/static_private_accessor_test.exs b/test/js/parser/classes/static_private_accessor_test.exs new file mode 100644 index 000000000..652a5be3d --- /dev/null +++ b/test/js/parser/classes/static_private_accessor_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticPrivateAccessorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible static private accessor syntax" do + source = """ + class C { + static #stored; + static get #value() { return 1; } + static set #value(value) { this.#stored = value; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [stored, getter, setter]}]}} = + Parser.parse(source) + + assert %AST.FieldDefinition{static: true, key: %AST.PrivateIdentifier{name: "stored"}} = + stored + + assert %AST.MethodDefinition{ + kind: :get, + static: true, + key: %AST.PrivateIdentifier{name: "value"} + } = getter + + assert %AST.MethodDefinition{ + kind: :set, + static: true, + key: %AST.PrivateIdentifier{name: "value"} + } = setter + end +end diff --git a/test/js/parser/classes/static_private_method_test.exs b/test/js/parser/classes/static_private_method_test.exs new file mode 100644 index 000000000..95f10ae50 --- /dev/null +++ b/test/js/parser/classes/static_private_method_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Classes.StaticPrivateMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible static private method syntax" do + source = """ + class C { + static #method(value) { return value; } + static call(value) { return this.#method(value); } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [private_method, call_method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{static: true, key: %AST.PrivateIdentifier{name: "method"}} = + private_method + + assert %AST.MethodDefinition{static: true, key: %AST.Identifier{name: "call"}} = call_method + end +end diff --git a/test/js/parser/classes/strict_non_simple_method_parameter_test.exs b/test/js/parser/classes/strict_non_simple_method_parameter_test.exs new file mode 100644 index 000000000..ef3a6cfec --- /dev/null +++ b/test/js/parser/classes/strict_non_simple_method_parameter_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Classes.StrictNonSimpleMethodParameterTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects strict method bodies with non-simple parameters" do + for source <- [ + "class C { async *m({ value }) { 'use strict'; } }", + "class C { static async *m(...rest) { 'use strict'; } }", + "class C { m(value = 1) { 'use strict'; } }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "use strict not allowed with non-simple parameters") + ) + end + end +end diff --git a/test/js/parser/classes/string_constructor_method_test.exs b/test/js/parser/classes/string_constructor_method_test.exs new file mode 100644 index 000000000..87a264b14 --- /dev/null +++ b/test/js/parser/classes/string_constructor_method_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Classes.StringConstructorMethodTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows string and computed constructor method names" do + for source <- [ + "class C { \"constructor\"() {} }", + "class C { [\"constructor\"]() {} }" + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/classes/string_method_key_test.exs b/test/js/parser/classes/string_method_key_test.exs new file mode 100644 index 000000000..e91e297e4 --- /dev/null +++ b/test/js/parser/classes/string_method_key_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Classes.StringMethodKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible string class method names" do + source = """ + class C { + "method-name"() { return 1; } + static "static-name"() { return 2; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [method, static_method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{key: %AST.Literal{value: "method-name"}, static: false} = method + + assert %AST.MethodDefinition{key: %AST.Literal{value: "static-name"}, static: true} = + static_method + end +end diff --git a/test/js/parser/classes/super_assignment_test.exs b/test/js/parser/classes/super_assignment_test.exs new file mode 100644 index 000000000..da8cedf02 --- /dev/null +++ b/test/js/parser/classes/super_assignment_test.exs @@ -0,0 +1,43 @@ +defmodule QuickBEAM.JS.Parser.Classes.SuperAssignmentTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible super property assignment syntax" do + source = """ + class D extends C { + set(value) { super.value = value; super["other"] = value; } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [method]}]}} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + value: %AST.FunctionExpression{ + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.MemberExpression{ + object: %AST.Identifier{name: "super"}, + computed: false + } + } + }, + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.MemberExpression{ + object: %AST.Identifier{name: "super"}, + computed: true + } + } + } + ] + } + } + } = method + end +end diff --git a/test/js/parser/classes/super_call_test.exs b/test/js/parser/classes/super_call_test.exs new file mode 100644 index 000000000..b16285d1a --- /dev/null +++ b/test/js/parser/classes/super_call_test.exs @@ -0,0 +1,41 @@ +defmodule QuickBEAM.JS.Parser.Classes.SuperCallTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS super constructor and super member call syntax" do + source = """ + class D extends C { + constructor() { super(); this.z = 20; } + h() { return super.f(); } + static H() { return super["F"](); } + } + """ + + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{} = klass]}} = Parser.parse(source) + + assert %AST.ClassDeclaration{ + super_class: %AST.Identifier{name: "C"}, + body: [ctor, h, static_h] + } = klass + + assert %AST.MethodDefinition{ + key: %AST.Identifier{name: "constructor"}, + value: %AST.FunctionExpression{body: ctor_body} + } = ctor + + assert %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.Identifier{name: "super"}} + }, + _ + ] + } = ctor_body + + assert %AST.MethodDefinition{key: %AST.Identifier{name: "h"}} = h + assert %AST.MethodDefinition{key: %AST.Identifier{name: "H"}, static: true} = static_h + end +end diff --git a/test/js/parser/classes/super_computed_call_test.exs b/test/js/parser/classes/super_computed_call_test.exs new file mode 100644 index 000000000..dac5e4c44 --- /dev/null +++ b/test/js/parser/classes/super_computed_call_test.exs @@ -0,0 +1,37 @@ +defmodule QuickBEAM.JS.Parser.Classes.SuperComputedCallTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible super computed member call syntax" do + source = "class C extends B { method() { return super[expr](); } }" + + assert {:ok, + %AST.Program{ + body: [ + %AST.ClassDeclaration{super_class: %AST.Identifier{name: "B"}, body: [method]} + ] + }} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + value: %AST.FunctionExpression{ + body: %AST.BlockStatement{ + body: [ + %AST.ReturnStatement{ + argument: %AST.CallExpression{ + callee: %AST.MemberExpression{ + object: %AST.Identifier{name: "super"}, + property: %AST.Identifier{name: "expr"}, + computed: true + } + } + } + ] + } + } + } = method + end +end diff --git a/test/js/parser/classes/super_constructor_call_test.exs b/test/js/parser/classes/super_constructor_call_test.exs new file mode 100644 index 000000000..8f9d2188a --- /dev/null +++ b/test/js/parser/classes/super_constructor_call_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.Classes.SuperConstructorCallTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible super constructor call syntax" do + source = "class C extends B { constructor(value) { super(value); } }" + + assert {:ok, + %AST.Program{ + body: [ + %AST.ClassDeclaration{ + super_class: %AST.Identifier{name: "B"}, + body: [constructor] + } + ] + }} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + kind: :constructor, + value: %AST.FunctionExpression{ + params: [%AST.Identifier{name: "value"}], + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.Identifier{name: "super"}, + arguments: [%AST.Identifier{name: "value"}] + } + } + ] + } + } + } = constructor + end +end diff --git a/test/js/parser/classes/super_member_access_test.exs b/test/js/parser/classes/super_member_access_test.exs new file mode 100644 index 000000000..7686a798f --- /dev/null +++ b/test/js/parser/classes/super_member_access_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.Classes.SuperMemberAccessTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible super member access syntax" do + source = "class C extends B { method() { return super.value; } }" + + assert {:ok, + %AST.Program{ + body: [ + %AST.ClassDeclaration{super_class: %AST.Identifier{name: "B"}, body: [method]} + ] + }} = + Parser.parse(source) + + assert %AST.MethodDefinition{ + value: %AST.FunctionExpression{ + body: %AST.BlockStatement{ + body: [ + %AST.ReturnStatement{ + argument: %AST.MemberExpression{ + object: %AST.Identifier{name: "super"}, + property: %AST.Identifier{name: "value"} + } + } + ] + } + } + } = method + end +end diff --git a/test/js/parser/control_flow/async_of_for_head_test.exs b/test/js/parser/control_flow/async_of_for_head_test.exs new file mode 100644 index 000000000..4911ca88b --- /dev/null +++ b/test/js/parser/control_flow/async_of_for_head_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.AsyncOfForHeadTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS async of arrow as classic for initializer" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ForStatement{ + init: %AST.ArrowFunctionExpression{ + params: [%AST.Identifier{name: "of"}] + } + } + ] + }} = Parser.parse("for (async of => {}; i < 10; ++i) { }") + end +end diff --git a/test/js/parser/control_flow/await_label_test.exs b/test/js/parser/control_flow/await_label_test.exs new file mode 100644 index 000000000..6285d0b1e --- /dev/null +++ b/test/js/parser/control_flow/await_label_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.AwaitLabelTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS await label in script code" do + assert {:ok, + %AST.Program{ + body: [ + %AST.LabeledStatement{ + label: %AST.Identifier{name: "await"}, + body: %AST.ExpressionStatement{expression: %AST.Literal{value: 1}} + } + ] + }} = Parser.parse("await: 1;") + end +end diff --git a/test/js/parser/control_flow/await_using_test.exs b/test/js/parser/control_flow/await_using_test.exs new file mode 100644 index 000000000..0fa4db10a --- /dev/null +++ b/test/js/parser/control_flow/await_using_test.exs @@ -0,0 +1,108 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.AwaitUsingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS await using declaration syntax" do + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + body: %AST.BlockStatement{ + body: [ + %AST.VariableDeclaration{ + kind: :await_using, + declarations: [ + %AST.VariableDeclarator{id: %AST.Identifier{name: "resource"}} + ] + } + ] + } + } + ] + }} = Parser.parse("async function f() { await using resource = value; }") + end + + test "ports QuickJS await using declaration in for head" do + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + body: %AST.BlockStatement{ + body: [ + %AST.ForStatement{ + init: %AST.VariableDeclaration{kind: :await_using} + } + ] + } + } + ] + }} = + Parser.parse( + "async function f() { for (await using resource = value; i < 1; i++) {} }" + ) + end + + test "ports QuickJS await using declaration in for-of head" do + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + body: %AST.BlockStatement{ + body: [ + %AST.ForOfStatement{ + left: %AST.VariableDeclaration{kind: :await_using}, + await: true + } + ] + } + } + ] + }} = Parser.parse("async function f() { for (await using resource of values) {} }") + end + + test "ports QuickJS await using element access expression syntax" do + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AwaitExpression{ + argument: %AST.MemberExpression{ + object: %AST.Identifier{name: "using"}, + computed: true + } + } + } + ] + } + } + ] + }} = Parser.parse("async function f() { await using[x]; }") + end + + test "ports QuickJS await using split across lines before let assignment" do + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{expression: %AST.AwaitExpression{}}, + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.Identifier{name: "let"} + } + } + | _ + ] + } + } + ] + }} = Parser.parse("async function f() { await using\nlet = value; var using, let; }") + end +end diff --git a/test/js/parser/control_flow/break_continue_line_terminator_test.exs b/test/js/parser/control_flow/break_continue_line_terminator_test.exs new file mode 100644 index 000000000..a3bbf95b4 --- /dev/null +++ b/test/js/parser/control_flow/break_continue_line_terminator_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.BreakContinueLineTerminatorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible break and continue ASI line terminator syntax" do + source = """ + loop: while (value) { + break + loop; + continue + loop; + } + """ + + assert {:ok, + %AST.Program{ + body: [ + %AST.LabeledStatement{ + body: %AST.WhileStatement{body: %AST.BlockStatement{body: statements}} + } + ] + }} = + Parser.parse(source) + + assert [ + %AST.BreakStatement{label: nil}, + %AST.ExpressionStatement{expression: %AST.Identifier{name: "loop"}}, + %AST.ContinueStatement{label: nil}, + %AST.ExpressionStatement{expression: %AST.Identifier{name: "loop"}} + ] = statements + end +end diff --git a/test/js/parser/control_flow/catch_binding_conflict_test.exs b/test/js/parser/control_flow/catch_binding_conflict_test.exs new file mode 100644 index 000000000..c7ce29c81 --- /dev/null +++ b/test/js/parser/control_flow/catch_binding_conflict_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.CatchBindingConflictTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects duplicate catch binding names" do + assert {:error, %AST.Program{}, errors} = Parser.parse("try {} catch ([x, x]) {}") + assert errors != [] + end + + test "rejects catch parameter conflicts with directly nested function declarations" do + assert {:error, %AST.Program{}, errors} = Parser.parse("try {} catch (e) { function e() {} }") + assert errors != [] + end +end diff --git a/test/js/parser/control_flow/catch_destructuring_test.exs b/test/js/parser/control_flow/catch_destructuring_test.exs new file mode 100644 index 000000000..f93a73594 --- /dev/null +++ b/test/js/parser/control_flow/catch_destructuring_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.CatchDestructuringTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible catch destructuring binding syntax" do + source = """ + try { throw error; } catch ({ message, code = 1 }) { handle(message); } + try { throw error; } catch ([first, ...rest]) { handle(first); } + """ + + assert {:ok, %AST.Program{body: [object_catch, array_catch]}} = Parser.parse(source) + + assert %AST.TryStatement{ + handler: %AST.CatchClause{ + param: %AST.ObjectPattern{ + properties: [%AST.Property{}, %AST.Property{value: %AST.AssignmentPattern{}}] + } + } + } = object_catch + + assert %AST.TryStatement{ + handler: %AST.CatchClause{ + param: %AST.ArrayPattern{ + elements: [ + %AST.Identifier{name: "first"}, + %AST.RestElement{argument: %AST.Identifier{name: "rest"}} + ] + } + } + } = array_catch + end +end diff --git a/test/js/parser/control_flow/catch_instanceof_assignment_test.exs b/test/js/parser/control_flow/catch_instanceof_assignment_test.exs new file mode 100644 index 000000000..d70930da1 --- /dev/null +++ b/test/js/parser/control_flow/catch_instanceof_assignment_test.exs @@ -0,0 +1,41 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.CatchInstanceofAssignmentTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS catch instanceof assignment syntax" do + source = """ + try { delete null.a; } + catch (e) { err = (e instanceof TypeError); } + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.TryStatement{ + block: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{expression: %AST.UnaryExpression{operator: "delete"}} + ] + }, + handler: %AST.CatchClause{ + param: %AST.Identifier{name: "e"}, + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.Identifier{name: "err"}, + right: %AST.BinaryExpression{ + operator: "instanceof", + left: %AST.Identifier{name: "e"}, + right: %AST.Identifier{name: "TypeError"} + } + } + } + ] + } + } + } = statement + end +end diff --git a/test/js/parser/control_flow/conditional_no_in_test.exs b/test/js/parser/control_flow/conditional_no_in_test.exs new file mode 100644 index 000000000..99c0640c9 --- /dev/null +++ b/test/js/parser/control_flow/conditional_no_in_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ConditionalNoInTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects in expressions in conditional alternate inside for init" do + source = "for (true ? 0 : 0 in {}; false; ) ;" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert errors != [] + end + + test "allows in expressions in conditional consequent inside for init" do + source = "for (true ? 0 in {} : 0; false; ) ;" + + assert {:ok, %AST.Program{}} = Parser.parse(source) + end +end diff --git a/test/js/parser/control_flow/continue_test.exs b/test/js/parser/control_flow/continue_test.exs new file mode 100644 index 000000000..f6f5ac4ce --- /dev/null +++ b/test/js/parser/control_flow/continue_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ContinueTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible continue and labeled continue syntax" do + source = """ + loop: while (1) { continue loop; } + for (;;) { continue; } + """ + + assert {:ok, %AST.Program{body: [labeled, loop]}} = Parser.parse(source) + + assert %AST.LabeledStatement{ + label: %AST.Identifier{name: "loop"}, + body: %AST.WhileStatement{ + body: %AST.BlockStatement{ + body: [%AST.ContinueStatement{label: %AST.Identifier{name: "loop"}}] + } + } + } = labeled + + assert %AST.ForStatement{ + body: %AST.BlockStatement{body: [%AST.ContinueStatement{label: nil}]} + } = loop + end +end diff --git a/test/js/parser/control_flow/control_flow_test.exs b/test/js/parser/control_flow/control_flow_test.exs new file mode 100644 index 000000000..f249b390a --- /dev/null +++ b/test/js/parser/control_flow/control_flow_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ControlFlowTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS labeled statement parse coverage" do + source = """ + do x: { break x; } while(0); + if (1) + x: { break x; } + else + x: { break x; } + with ({}) x: { break x; }; + while (0) x: { break x; }; + """ + + assert {:ok, + %AST.Program{body: [do_while, if_stmt, with_stmt, while_stmt, %AST.EmptyStatement{}]}} = + Parser.parse(source) + + assert %AST.DoWhileStatement{body: %AST.LabeledStatement{label: %AST.Identifier{name: "x"}}} = + do_while + + assert %AST.IfStatement{ + consequent: %AST.LabeledStatement{}, + alternate: %AST.LabeledStatement{} + } = if_stmt + + assert %AST.WithStatement{body: %AST.LabeledStatement{}} = with_stmt + assert %AST.WhileStatement{body: %AST.LabeledStatement{}} = while_stmt + end +end diff --git a/test/js/parser/control_flow/debugger_test.exs b/test/js/parser/control_flow/debugger_test.exs new file mode 100644 index 000000000..6acbdde1f --- /dev/null +++ b/test/js/parser/control_flow/debugger_test.exs @@ -0,0 +1,11 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.DebuggerTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible debugger statement syntax" do + assert {:ok, %AST.Program{body: [%AST.DebuggerStatement{}]}} = Parser.parse("debugger;") + end +end diff --git a/test/js/parser/control_flow/do_while_object_condition_test.exs b/test/js/parser/control_flow/do_while_object_condition_test.exs new file mode 100644 index 000000000..985972ad4 --- /dev/null +++ b/test/js/parser/control_flow/do_while_object_condition_test.exs @@ -0,0 +1,11 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.DoWhileObjectConditionTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects invalid object literal forms in do-while conditions" do + assert {:error, %AST.Program{}, errors} = Parser.parse("do { ; } while ({0});") + assert Enum.any?(errors, &(&1.message == "invalid object initializer")) + end +end diff --git a/test/js/parser/control_flow/do_while_semicolon_test.exs b/test/js/parser/control_flow/do_while_semicolon_test.exs new file mode 100644 index 000000000..8874ebd85 --- /dev/null +++ b/test/js/parser/control_flow/do_while_semicolon_test.exs @@ -0,0 +1,25 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.DoWhileSemicolonTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible do-while optional semicolon syntax" do + source = """ + do { value++; } while (value < 3) + value; + """ + + assert {:ok, %AST.Program{body: [loop, expression]}} = Parser.parse(source) + + assert %AST.DoWhileStatement{ + body: %AST.BlockStatement{ + body: [%AST.ExpressionStatement{expression: %AST.UpdateExpression{operator: "++"}}] + }, + test: %AST.BinaryExpression{operator: "<"} + } = loop + + assert %AST.ExpressionStatement{expression: %AST.Identifier{name: "value"}} = expression + end +end diff --git a/test/js/parser/control_flow/empty_for_loop_test.exs b/test/js/parser/control_flow/empty_for_loop_test.exs new file mode 100644 index 000000000..9bc1c2aa6 --- /dev/null +++ b/test/js/parser/control_flow/empty_for_loop_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.EmptyForLoopTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible empty for loop clauses" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("for (;;) { break; }") + + assert %AST.ForStatement{ + init: nil, + test: nil, + update: nil, + body: %AST.BlockStatement{body: [%AST.BreakStatement{}]} + } = statement + end +end diff --git a/test/js/parser/control_flow/empty_statement_test.exs b/test/js/parser/control_flow/empty_statement_test.exs new file mode 100644 index 000000000..9b30c47fc --- /dev/null +++ b/test/js/parser/control_flow/empty_statement_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.EmptyStatementTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible empty statement syntax" do + source = """ + ; + while (ready) ; + if (ready) ; else ; + """ + + assert {:ok, %AST.Program{body: [empty, while_statement, if_statement]}} = + Parser.parse(source) + + assert %AST.EmptyStatement{} = empty + assert %AST.WhileStatement{body: %AST.EmptyStatement{}} = while_statement + + assert %AST.IfStatement{consequent: %AST.EmptyStatement{}, alternate: %AST.EmptyStatement{}} = + if_statement + end +end diff --git a/test/js/parser/control_flow/for_await_destructuring_target_test.exs b/test/js/parser/control_flow/for_await_destructuring_target_test.exs new file mode 100644 index 000000000..aa35d5950 --- /dev/null +++ b/test/js/parser/control_flow/for_await_destructuring_target_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForAwaitDestructuringTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects invalid destructuring assignment targets in for-await-of heads" do + for source <- [ + "async function fn() { for await ([[(x, y)]] of [[[]]]) {} }", + "async function fn() { for await ([{ get x() {} }] of [[{}]]) {} }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid destructuring target")) + end + end + + test "allows arbitrary initializer expressions in for-await-of destructuring heads" do + assert {:ok, %AST.Program{}} = + Parser.parse( + "async function fn() { for await ([x = (0, function() {}), y = (function() {})] of [[]]) {} }" + ) + end + + test "rejects strict restricted names in for-await-of destructuring assignment heads" do + for source <- [ + "'use strict'; async function fn() { for await ([arguments] of [[]]) {} }", + "'use strict'; async function fn() { for await ([x = yield] of [[]]) {} }", + "'use strict'; async function fn() { for await ([x[yield]] of [[]]) {} }", + "'use strict'; async function fn() { for await ([...x[yield]] of [[]]) {} }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted assignment target in strict mode")) + end + end +end diff --git a/test/js/parser/control_flow/for_await_destructuring_test.exs b/test/js/parser/control_flow/for_await_destructuring_test.exs new file mode 100644 index 000000000..27eb0c9af --- /dev/null +++ b/test/js/parser/control_flow/for_await_destructuring_test.exs @@ -0,0 +1,41 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForAwaitDestructuringTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible for-await destructuring syntax" do + source = """ + async function f(stream) { + for await (const { value } of stream) { use(value); } + } + """ + + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + async: true, + body: %AST.BlockStatement{body: [statement]} + } + ] + }} = + Parser.parse(source) + + assert %AST.ForOfStatement{ + await: true, + left: %AST.VariableDeclaration{ + kind: :const, + declarations: [ + %AST.VariableDeclarator{ + id: %AST.ObjectPattern{ + properties: [%AST.Property{key: %AST.Identifier{name: "value"}}] + } + } + ] + }, + right: %AST.Identifier{name: "stream"} + } = statement + end +end diff --git a/test/js/parser/control_flow/for_await_test.exs b/test/js/parser/control_flow/for_await_test.exs new file mode 100644 index 000000000..9286eed5d --- /dev/null +++ b/test/js/parser/control_flow/for_await_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForAwaitTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible for-await-of syntax" do + source = "async function f(iterable) { for await (const value of iterable) { await value; } }" + + assert {:ok, + %AST.Program{ + body: [%AST.FunctionDeclaration{body: %AST.BlockStatement{body: [loop]}}] + }} = Parser.parse(source) + + assert %AST.ForOfStatement{ + await: true, + left: %AST.VariableDeclaration{kind: :const}, + right: %AST.Identifier{name: "iterable"}, + body: %AST.BlockStatement{} + } = loop + end +end diff --git a/test/js/parser/control_flow/for_const_in_of_test.exs b/test/js/parser/control_flow/for_const_in_of_test.exs new file mode 100644 index 000000000..6967d47da --- /dev/null +++ b/test/js/parser/control_flow/for_const_in_of_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForConstInOfTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible const for-in and for-of declarations" do + source = """ + for (const key in object) { use(key); } + for (const value of iterable) { use(value); } + """ + + assert {:ok, %AST.Program{body: [for_in, for_of]}} = Parser.parse(source) + + assert %AST.ForInStatement{ + left: %AST.VariableDeclaration{ + kind: :const, + declarations: [%AST.VariableDeclarator{id: %AST.Identifier{name: "key"}}] + }, + right: %AST.Identifier{name: "object"} + } = for_in + + assert %AST.ForOfStatement{ + left: %AST.VariableDeclaration{ + kind: :const, + declarations: [%AST.VariableDeclarator{id: %AST.Identifier{name: "value"}}] + }, + right: %AST.Identifier{name: "iterable"} + } = for_of + end +end diff --git a/test/js/parser/control_flow/for_destructuring_test.exs b/test/js/parser/control_flow/for_destructuring_test.exs new file mode 100644 index 000000000..ed6e42b5d --- /dev/null +++ b/test/js/parser/control_flow/for_destructuring_test.exs @@ -0,0 +1,46 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForDestructuringTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible for-in and for-of destructuring syntax" do + source = """ + for (const [key, value] of entries) { continue; } + for (let { name } in objects) { break; } + """ + + assert {:ok, %AST.Program{body: [for_of, for_in]}} = Parser.parse(source) + + assert %AST.ForOfStatement{ + left: %AST.VariableDeclaration{ + kind: :const, + declarations: [ + %AST.VariableDeclarator{ + id: %AST.ArrayPattern{ + elements: [%AST.Identifier{name: "key"}, %AST.Identifier{name: "value"}] + } + } + ] + }, + right: %AST.Identifier{name: "entries"}, + body: %AST.BlockStatement{body: [%AST.ContinueStatement{}]} + } = for_of + + assert %AST.ForInStatement{ + left: %AST.VariableDeclaration{ + kind: :let, + declarations: [ + %AST.VariableDeclarator{ + id: %AST.ObjectPattern{ + properties: [%AST.Property{key: %AST.Identifier{name: "name"}}] + } + } + ] + }, + right: %AST.Identifier{name: "objects"}, + body: %AST.BlockStatement{body: [%AST.BreakStatement{}]} + } = for_in + end +end diff --git a/test/js/parser/control_flow/for_head_lexical_conflict_test.exs b/test/js/parser/control_flow/for_head_lexical_conflict_test.exs new file mode 100644 index 000000000..c64ad5d07 --- /dev/null +++ b/test/js/parser/control_flow/for_head_lexical_conflict_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForHeadLexicalConflictTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects duplicate lexical names in for heads" do + for source <- [ + "for (let [x, x] in obj) {}", + "for (const [x, x] of obj) {}" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end + end + + test "rejects var declarations in for bodies that conflict with lexical head names" do + for source <- [ + "for (let x; false;) { var x; }", + "for (let x in obj) { var x; }", + "for (const x of obj) { var x; }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "lexical declaration conflicts with var declaration") + ) + end + end +end diff --git a/test/js/parser/control_flow/for_in_no_in_expression_test.exs b/test/js/parser/control_flow/for_in_no_in_expression_test.exs new file mode 100644 index 000000000..40f5c53b6 --- /dev/null +++ b/test/js/parser/control_flow/for_in_no_in_expression_test.exs @@ -0,0 +1,47 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForInNoInExpressionTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS private member for-in left-hand side" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ClassDeclaration{ + body: [ + %AST.FieldDefinition{}, + %AST.MethodDefinition{ + value: %AST.FunctionExpression{ + body: %AST.BlockStatement{ + body: [ + %AST.ForInStatement{ + left: %AST.MemberExpression{ + property: %AST.PrivateIdentifier{name: "field"} + } + } + ] + } + } + } + ] + } + ] + }} = Parser.parse("class C { #field; m() { for (this.#field in {a: 0}) ; } }") + end + + test "ports Annex B var for-in declaration initializers" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ForInStatement{ + left: %AST.VariableDeclaration{ + kind: :var, + declarations: [%AST.VariableDeclarator{init: %AST.Identifier{name: "first"}}] + } + } + ] + }} = Parser.parse("for (var key = first in object) ;") + end +end diff --git a/test/js/parser/control_flow/for_in_of_head_target_test.exs b/test/js/parser/control_flow/for_in_of_head_target_test.exs new file mode 100644 index 000000000..089e065bd --- /dev/null +++ b/test/js/parser/control_flow/for_in_of_head_target_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForInOfHeadTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects invalid for-in/of assignment targets" do + for source <- ["for (this of []) {}", "for ((this) in obj) {}"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid assignment target")) + end + end + + test "rejects escaped of in for-of heads" do + assert {:error, %AST.Program{}, errors} = Parser.parse("for (var x o\\u0066 []) ;") + assert errors != [] + end +end diff --git a/test/js/parser/control_flow/for_in_of_rest_target_test.exs b/test/js/parser/control_flow/for_in_of_rest_target_test.exs new file mode 100644 index 000000000..3e8908d7c --- /dev/null +++ b/test/js/parser/control_flow/for_in_of_rest_target_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForInOfRestTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects invalid rest positions and initializers in for-in/of destructuring heads" do + for source <- [ + "for ([...x, y] of [[]]);", + "for ([...x,] in obj);", + "for ([...x = 1] of [[]]);", + "for ({...rest, b} of [{}]);" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid destructuring target")) + end + end +end diff --git a/test/js/parser/control_flow/for_in_of_single_statement_context_test.exs b/test/js/parser/control_flow/for_in_of_single_statement_context_test.exs new file mode 100644 index 000000000..7933f60a1 --- /dev/null +++ b/test/js/parser/control_flow/for_in_of_single_statement_context_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForInOfSingleStatementContextTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects declarations as for-in and for-of single-statement bodies" do + cases = [ + {"for (x in y) function f() {}", + "function declarations can't appear in single-statement context"}, + {"for (x of y) async function f() {}", + "function declarations can't appear in single-statement context"}, + {"for (x in y) class C {}", "class declarations can't appear in single-statement context"}, + {"for (x of y) let z;", "lexical declarations can't appear in single-statement context"}, + {"for await (x of y) const z = 1;", + "lexical declarations can't appear in single-statement context"} + ] + + for {source, message} <- cases do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == message)) + end + end +end diff --git a/test/js/parser/control_flow/for_loop_test.exs b/test/js/parser/control_flow/for_loop_test.exs new file mode 100644 index 000000000..d0e51addb --- /dev/null +++ b/test/js/parser/control_flow/for_loop_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForLoopTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible for loop syntax" do + source = """ + for (var i = 0; i < 3; i++) { assert(i); } + for (x in obj) { break; } + for (let x of xs) { assert(x); } + """ + + assert {:ok, %AST.Program{body: [classic, for_in, for_of]}} = Parser.parse(source) + + assert %AST.ForStatement{ + init: %AST.VariableDeclaration{}, + test: %AST.BinaryExpression{operator: "<"}, + update: %AST.UpdateExpression{operator: "++"}, + body: %AST.BlockStatement{} + } = classic + + assert %AST.ForInStatement{ + left: %AST.Identifier{name: "x"}, + right: %AST.Identifier{name: "obj"} + } = for_in + + assert %AST.ForOfStatement{ + left: %AST.VariableDeclaration{}, + right: %AST.Identifier{name: "xs"} + } = for_of + end +end diff --git a/test/js/parser/control_flow/for_nested_destructuring_test.exs b/test/js/parser/control_flow/for_nested_destructuring_test.exs new file mode 100644 index 000000000..ed3bf0b4d --- /dev/null +++ b/test/js/parser/control_flow/for_nested_destructuring_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForNestedDestructuringTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible for-of nested destructuring syntax" do + source = """ + for (const { a: [first, ...rest] } of entries) { use(first); } + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ForOfStatement{ + left: %AST.VariableDeclaration{ + kind: :const, + declarations: [ + %AST.VariableDeclarator{ + id: %AST.ObjectPattern{ + properties: [ + %AST.Property{ + value: %AST.ArrayPattern{ + elements: [%AST.Identifier{name: "first"}, %AST.RestElement{}] + } + } + ] + } + } + ] + }, + right: %AST.Identifier{name: "entries"} + } = statement + end +end diff --git a/test/js/parser/control_flow/for_of_head_expression_test.exs b/test/js/parser/control_flow/for_of_head_expression_test.exs new file mode 100644 index 000000000..ad75326e3 --- /dev/null +++ b/test/js/parser/control_flow/for_of_head_expression_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForOfHeadExpressionTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects async as a for-of left-hand side" do + assert {:error, %AST.Program{}, errors} = Parser.parse("var async; for (async of [1]) ;") + assert errors != [] + end + + test "rejects comma expressions in for-of right-hand side" do + for source <- ["for (x of [], []) {}", "for (var x of [], []) {}", "for (let x of [], []) {}"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert errors != [] + end + end +end diff --git a/test/js/parser/control_flow/for_sequence_clauses_test.exs b/test/js/parser/control_flow/for_sequence_clauses_test.exs new file mode 100644 index 000000000..f3519985c --- /dev/null +++ b/test/js/parser/control_flow/for_sequence_clauses_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ForSequenceClausesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible for loop sequence clauses" do + source = "for (i = 0, j = 1; i < j; i++, j--) { continue; }" + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ForStatement{ + init: %AST.SequenceExpression{ + expressions: [%AST.AssignmentExpression{}, %AST.AssignmentExpression{}] + }, + test: %AST.BinaryExpression{operator: "<"}, + update: %AST.SequenceExpression{ + expressions: [ + %AST.UpdateExpression{operator: "++"}, + %AST.UpdateExpression{operator: "--"} + ] + }, + body: %AST.BlockStatement{body: [%AST.ContinueStatement{}]} + } = statement + end +end diff --git a/test/js/parser/control_flow/if_annex_b_function_test.exs b/test/js/parser/control_flow/if_annex_b_function_test.exs new file mode 100644 index 000000000..735964a16 --- /dev/null +++ b/test/js/parser/control_flow/if_annex_b_function_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.IfAnnexBFunctionTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows sloppy function declarations in if statement bodies" do + for source <- ["if (flag) function f() {}", "if (flag) ; else function f() {}"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "rejects async and generator declarations in if statement bodies" do + for source <- [ + "if (flag) async function f() {}", + "if (flag) function* f() {}", + "if (flag) ; else async function* f() {}" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "function declarations can't appear in single-statement context") + ) + end + end +end diff --git a/test/js/parser/control_flow/labeled_block_function_test.exs b/test/js/parser/control_flow/labeled_block_function_test.exs new file mode 100644 index 000000000..318e9e16a --- /dev/null +++ b/test/js/parser/control_flow/labeled_block_function_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.LabeledBlockFunctionTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows labeled function declarations inside sloppy blocks" do + assert {:ok, %AST.Program{}} = Parser.parse("{ label: function f() {} }") + end + + test "allows sloppy top-level labeled function declarations" do + assert {:ok, %AST.Program{}} = Parser.parse("label: function f() {}") + assert {:ok, %AST.Program{}} = Parser.parse("label1: label2: function f() {}") + end + + test "rejects async and generator labeled function declarations" do + for source <- ["label: async function f() {}", "label: function* f() {}"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "function declarations can't appear in single-statement context") + ) + end + end + + test "rejects labeled function declarations in strict scripts" do + assert {:error, %AST.Program{}, errors} = + Parser.parse(~S|"use strict"; label: function f() {}|) + + assert Enum.any?( + errors, + &(&1.message == "function declarations can't appear in single-statement context") + ) + end +end diff --git a/test/js/parser/control_flow/labeled_break_continue_test.exs b/test/js/parser/control_flow/labeled_break_continue_test.exs new file mode 100644 index 000000000..61d9cd351 --- /dev/null +++ b/test/js/parser/control_flow/labeled_break_continue_test.exs @@ -0,0 +1,41 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.LabeledBreakContinueTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible labeled break and continue syntax" do + source = """ + outer: for (;;) { + inner: while (value) { + continue outer; + break inner; + } + } + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.LabeledStatement{ + label: %AST.Identifier{name: "outer"}, + body: %AST.ForStatement{ + body: %AST.BlockStatement{ + body: [ + %AST.LabeledStatement{ + label: %AST.Identifier{name: "inner"}, + body: %AST.WhileStatement{ + body: %AST.BlockStatement{ + body: [ + %AST.ContinueStatement{label: %AST.Identifier{name: "outer"}}, + %AST.BreakStatement{label: %AST.Identifier{name: "inner"}} + ] + } + } + } + ] + } + } + } = statement + end +end diff --git a/test/js/parser/control_flow/labeled_function_statement_context_test.exs b/test/js/parser/control_flow/labeled_function_statement_context_test.exs new file mode 100644 index 000000000..ea45bd6c9 --- /dev/null +++ b/test/js/parser/control_flow/labeled_function_statement_context_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.LabeledFunctionStatementContextTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects labeled function declarations in single-statement contexts" do + for source <- [ + "while (x) label: function f() {}", + "if (x) label: function f() {}", + "for (;;) label: function f() {}", + "with (x) label: function f() {}", + "do label: function f() {} while (x);" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "function declarations can't appear in single-statement context") + ) + end + end +end diff --git a/test/js/parser/control_flow/let_expression_statement_asi_test.exs b/test/js/parser/control_flow/let_expression_statement_asi_test.exs new file mode 100644 index 000000000..9c6b93781 --- /dev/null +++ b/test/js/parser/control_flow/let_expression_statement_asi_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.LetExpressionStatementASITest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "treats let followed by a line terminator as an expression statement in scripts" do + for source <- [ + "for (var x of []) let\nx = 1;", + "for (var x of []) let\n{}", + "for (var x in y) let\nx = 1;" + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "keeps let followed by a line-terminated array or object as a lexical declaration" do + for source <- ["for (var x of []) let\n[a] = 0;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "lexical declarations can't appear in single-statement context") + ) + end + end +end diff --git a/test/js/parser/control_flow/object_condition_diagnostics_test.exs b/test/js/parser/control_flow/object_condition_diagnostics_test.exs new file mode 100644 index 000000000..5b6154bcb --- /dev/null +++ b/test/js/parser/control_flow/object_condition_diagnostics_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ObjectConditionDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects invalid object literal forms in statement conditions" do + for source <- ["if ({1}) {}", "while ({1}) {}", "switch ({1}) { case 0: ; }"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid object initializer")) + end + end + + test "rejects statements before the first switch clause" do + assert {:error, %AST.Program{}, errors} = + Parser.parse("switch (value) { value = 1; case 1: ; }") + + assert Enum.any?(errors, &(&1.message == "invalid switch statement")) + end +end diff --git a/test/js/parser/control_flow/optional_catch_binding_test.exs b/test/js/parser/control_flow/optional_catch_binding_test.exs new file mode 100644 index 000000000..61700fa41 --- /dev/null +++ b/test/js/parser/control_flow/optional_catch_binding_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.OptionalCatchBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible optional catch binding syntax" do + source = """ + try {} catch {} + try {} catch (e) {} finally {} + """ + + assert {:ok, %AST.Program{body: [optional_catch, catch_finally]}} = Parser.parse(source) + + assert %AST.TryStatement{handler: %AST.CatchClause{param: nil}, finalizer: nil} = + optional_catch + + assert %AST.TryStatement{ + handler: %AST.CatchClause{param: %AST.Identifier{name: "e"}}, + finalizer: %AST.BlockStatement{} + } = catch_finally + end +end diff --git a/test/js/parser/control_flow/single_statement_context_test.exs b/test/js/parser/control_flow/single_statement_context_test.exs new file mode 100644 index 000000000..ff4bc1ed2 --- /dev/null +++ b/test/js/parser/control_flow/single_statement_context_test.exs @@ -0,0 +1,25 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.SingleStatementContextTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects lexical and class declarations in single-statement contexts" do + cases = [ + {"if (x) let y = 1;", "lexical declarations can't appear in single-statement context"}, + {"while (x) const y = 1;", "lexical declarations can't appear in single-statement context"}, + {"do let y = 1; while (x);", + "lexical declarations can't appear in single-statement context"}, + {"with (x) const y = 1;", "lexical declarations can't appear in single-statement context"}, + {"while (x) class C {}", "class declarations can't appear in single-statement context"}, + {"label: const y = 1;", "lexical declarations can't appear in single-statement context"}, + {"label: async function f() {}", + "function declarations can't appear in single-statement context"} + ] + + for {source, message} <- cases do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == message)) + end + end +end diff --git a/test/js/parser/control_flow/sloppy_let_for_head_test.exs b/test/js/parser/control_flow/sloppy_let_for_head_test.exs new file mode 100644 index 000000000..d3d9757a8 --- /dev/null +++ b/test/js/parser/control_flow/sloppy_let_for_head_test.exs @@ -0,0 +1,42 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.SloppyLetForHeadTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS sloppy let as for-in left-hand side" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{}, + %AST.ForInStatement{left: %AST.Identifier{name: "let"}} + ] + }} = Parser.parse("var let; for (let in {}) { }") + end + + test "ports QuickJS sloppy let as classic for initializer expression" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{}, + %AST.ForStatement{init: %AST.Identifier{name: "let"}}, + %AST.ForStatement{ + init: %AST.AssignmentExpression{left: %AST.Identifier{name: "let"}} + } + ] + }} = Parser.parse("var let; for (let; ; ) break; for (let = 3; ; ) break;") + end + + test "ports escaped let as identifier expression, not lexical declaration" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{expression: %AST.AssignmentExpression{}}, + %AST.ExpressionStatement{expression: %AST.Identifier{name: "let"}}, + %AST.ExpressionStatement{expression: %AST.Identifier{name: "a"}}, + %AST.VariableDeclaration{} + ] + }} = Parser.parse("this.let = 0;\nl\\u0065t\na;\nvar a;") + end +end diff --git a/test/js/parser/control_flow/strict_if_function_declaration_test.exs b/test/js/parser/control_flow/strict_if_function_declaration_test.exs new file mode 100644 index 000000000..97c3b9a81 --- /dev/null +++ b/test/js/parser/control_flow/strict_if_function_declaration_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.StrictIfFunctionDeclarationTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects function declarations as if branches in strict scripts" do + for source <- [ + ~S|"use strict"; if (ok) function f() {}|, + ~S|"use strict"; if (ok) ; else async function f() {}|, + ~S|"use strict"; if (ok) function* f() {} else ;| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "function declarations can't appear in single-statement context") + ) + end + end + + test "continues allowing plain function declarations as if branches in sloppy scripts" do + assert {:ok, %AST.Program{}} = + Parser.parse("if (ok) function f() {} else function g() {}") + end +end diff --git a/test/js/parser/control_flow/strict_switch_function_redeclaration_test.exs b/test/js/parser/control_flow/strict_switch_function_redeclaration_test.exs new file mode 100644 index 000000000..313961093 --- /dev/null +++ b/test/js/parser/control_flow/strict_switch_function_redeclaration_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.StrictSwitchFunctionRedeclarationTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects duplicate switch function declarations in strict scripts" do + assert {:error, %AST.Program{}, errors} = + Parser.parse( + ~S|"use strict"; switch (x) { case 0: function f() {} default: function f() {} }| + ) + + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end +end diff --git a/test/js/parser/control_flow/switch_async_function_redeclaration_test.exs b/test/js/parser/control_flow/switch_async_function_redeclaration_test.exs new file mode 100644 index 000000000..e34f93cfc --- /dev/null +++ b/test/js/parser/control_flow/switch_async_function_redeclaration_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.SwitchAsyncFunctionRedeclarationTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects switch redeclarations involving async or generator declarations" do + for source <- [ + "switch (x) { case 0: async function f() {} default: async function f() {} }", + "switch (x) { case 0: function f() {} default: async function f() {} }", + "switch (x) { case 0: function* f() {} default: function f() {} }", + "switch (x) { case 0: async function* f() {} default: function* f() {} }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end + end +end diff --git a/test/js/parser/control_flow/switch_default_middle_test.exs b/test/js/parser/control_flow/switch_default_middle_test.exs new file mode 100644 index 000000000..9834edb4a --- /dev/null +++ b/test/js/parser/control_flow/switch_default_middle_test.exs @@ -0,0 +1,33 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.SwitchDefaultMiddleTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible switch default in middle syntax" do + source = """ + switch (value) { + case 0: zero(); + default: fallback(); + case 1: one(); + } + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.SwitchStatement{ + cases: [ + %AST.SwitchCase{ + test: %AST.Literal{value: 0}, + consequent: [%AST.ExpressionStatement{}] + }, + %AST.SwitchCase{test: nil, consequent: [%AST.ExpressionStatement{}]}, + %AST.SwitchCase{ + test: %AST.Literal{value: 1}, + consequent: [%AST.ExpressionStatement{}] + } + ] + } = statement + end +end diff --git a/test/js/parser/control_flow/switch_fallthrough_test.exs b/test/js/parser/control_flow/switch_fallthrough_test.exs new file mode 100644 index 000000000..7f0049403 --- /dev/null +++ b/test/js/parser/control_flow/switch_fallthrough_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.SwitchFallthroughTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible switch fallthrough syntax" do + source = """ + switch (value) { + case 1: + case 2: + value += 1; + break; + default: + value = 0; + } + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.SwitchStatement{ + discriminant: %AST.Identifier{name: "value"}, + cases: [ + %AST.SwitchCase{test: %AST.Literal{value: 1}, consequent: []}, + %AST.SwitchCase{ + test: %AST.Literal{value: 2}, + consequent: [%AST.ExpressionStatement{}, %AST.BreakStatement{}] + }, + %AST.SwitchCase{ + test: nil, + consequent: [ + %AST.ExpressionStatement{expression: %AST.AssignmentExpression{operator: "="}} + ] + } + ] + } = statement + end +end diff --git a/test/js/parser/control_flow/switch_redeclaration_test.exs b/test/js/parser/control_flow/switch_redeclaration_test.exs new file mode 100644 index 000000000..d5b85a9d6 --- /dev/null +++ b/test/js/parser/control_flow/switch_redeclaration_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.SwitchRedeclarationTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects lexical redeclarations across switch clauses" do + for source <- [ + "switch (x) { case 0: let y; case 1: const y = 1; }", + "switch (x) { case 0: class Y {} case 1: let Y; }", + "switch (x) { case 0: function y() {} case 1: const y = 1; }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert errors != [] + end + end + + test "allows sloppy duplicate function declarations across switch clauses" do + assert {:ok, %AST.Program{}} = + Parser.parse("switch (x) { case 0: function y() {} case 1: function y() {} }") + end + + test "rejects var declarations conflicting with switch lexical declarations" do + assert {:error, %AST.Program{}, errors} = + Parser.parse("switch (x) { case 0: let y; case 1: var y; }") + + assert errors != [] + end +end diff --git a/test/js/parser/control_flow/switch_scope_test.exs b/test/js/parser/control_flow/switch_scope_test.exs new file mode 100644 index 000000000..194ed6c2d --- /dev/null +++ b/test/js/parser/control_flow/switch_scope_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.SwitchScopeTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows switch case lexical names to shadow outer block names" do + assert {:ok, %AST.Program{}} = + Parser.parse("let x; switch (value) { case 0: let x; }") + end + + test "rejects duplicate lexical names and var conflicts within switch cases" do + for source <- [ + "switch (value) { case 0: let x; default: const x = 1; }", + "switch (value) { case 0: function f() {} default: var f; }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert errors != [] + end + end + + test "allows sloppy duplicate function declarations within switch cases" do + assert {:ok, %AST.Program{}} = + Parser.parse("switch (value) { case 0: function f() {} default: function f() {} }") + end +end diff --git a/test/js/parser/control_flow/switch_test.exs b/test/js/parser/control_flow/switch_test.exs new file mode 100644 index 000000000..ec386504e --- /dev/null +++ b/test/js/parser/control_flow/switch_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.SwitchTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS assert_throws switch syntax" do + source = """ + switch (typeof func) { + case 'string': + eval(func); + break; + case 'function': + func(); + break; + default: + break; + } + """ + + assert {:ok, %AST.Program{body: [%AST.SwitchStatement{} = switch]}} = Parser.parse(source) + + assert %AST.SwitchStatement{ + discriminant: %AST.UnaryExpression{operator: "typeof"}, + cases: [ + %AST.SwitchCase{ + test: %AST.Literal{value: "string"}, + consequent: [_, %AST.BreakStatement{}] + }, + %AST.SwitchCase{ + test: %AST.Literal{value: "function"}, + consequent: [_, %AST.BreakStatement{}] + }, + %AST.SwitchCase{test: nil, consequent: [%AST.BreakStatement{}]} + ] + } = switch + end +end diff --git a/test/js/parser/control_flow/throw_test.exs b/test/js/parser/control_flow/throw_test.exs new file mode 100644 index 000000000..66fae5c71 --- /dev/null +++ b/test/js/parser/control_flow/throw_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.ThrowTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS assert helper throw syntax" do + assert {:ok, %AST.Program{body: [statement]}} = + Parser.parse(~s|throw Error("assertion failed");|) + + assert %AST.ThrowStatement{ + argument: %AST.CallExpression{callee: %AST.Identifier{name: "Error"}} + } = statement + end + + test "ports QuickJS throw restricted production line terminator error" do + assert {:error, %AST.Program{}, errors} = Parser.parse("throw\nError('x')") + assert Enum.any?(errors, &(&1.message == "line terminator after throw")) + end +end diff --git a/test/js/parser/control_flow/try_catch_finally_test.exs b/test/js/parser/control_flow/try_catch_finally_test.exs new file mode 100644 index 000000000..c80475150 --- /dev/null +++ b/test/js/parser/control_flow/try_catch_finally_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.TryCatchFinallyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible try-catch-finally syntax" do + source = """ + try { work(); } catch (error) { handle(error); } finally { cleanup(); } + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.TryStatement{ + block: %AST.BlockStatement{}, + handler: %AST.CatchClause{ + param: %AST.Identifier{name: "error"}, + body: %AST.BlockStatement{body: [%AST.ExpressionStatement{}]} + }, + finalizer: %AST.BlockStatement{body: [%AST.ExpressionStatement{}]} + } = statement + end +end diff --git a/test/js/parser/control_flow/try_catch_test.exs b/test/js/parser/control_flow/try_catch_test.exs new file mode 100644 index 000000000..bb64d3dea --- /dev/null +++ b/test/js/parser/control_flow/try_catch_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.TryCatchTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS try catch syntax used by constructor/delete tests" do + source = """ + try { new G() } catch (ex_) { ex = ex_ } + try { delete null.a; } catch(e) { err = (e instanceof TypeError); } finally { err = err; } + """ + + assert {:ok, %AST.Program{body: [ctor_try, delete_try]}} = Parser.parse(source) + + assert %AST.TryStatement{ + block: %AST.BlockStatement{}, + handler: %AST.CatchClause{param: %AST.Identifier{name: "ex_"}}, + finalizer: nil + } = ctor_try + + assert %AST.TryStatement{ + handler: %AST.CatchClause{param: %AST.Identifier{name: "e"}}, + finalizer: %AST.BlockStatement{} + } = delete_try + end +end diff --git a/test/js/parser/control_flow/try_finally_test.exs b/test/js/parser/control_flow/try_finally_test.exs new file mode 100644 index 000000000..2336f52c3 --- /dev/null +++ b/test/js/parser/control_flow/try_finally_test.exs @@ -0,0 +1,33 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.TryFinallyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible try-finally syntax without catch" do + source = """ + try { work(); } finally { cleanup(); } + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.TryStatement{ + block: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.Identifier{name: "work"}} + } + ] + }, + handler: nil, + finalizer: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.Identifier{name: "cleanup"}} + } + ] + } + } = statement + end +end diff --git a/test/js/parser/control_flow/typeof_switch_test.exs b/test/js/parser/control_flow/typeof_switch_test.exs new file mode 100644 index 000000000..8ed2f2e14 --- /dev/null +++ b/test/js/parser/control_flow/typeof_switch_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.ControlFlow.TypeofSwitchTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS typeof switch dispatch syntax" do + source = """ + switch (typeof func) { + case "function": break; + default: throw Error("bad"); + } + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.SwitchStatement{ + discriminant: %AST.UnaryExpression{ + operator: "typeof", + argument: %AST.Identifier{name: "func"} + }, + cases: [ + %AST.SwitchCase{ + test: %AST.Literal{value: "function"}, + consequent: [%AST.BreakStatement{}] + }, + %AST.SwitchCase{ + test: nil, + consequent: [ + %AST.ThrowStatement{ + argument: %AST.CallExpression{callee: %AST.Identifier{name: "Error"}} + } + ] + } + ] + } = statement + end +end diff --git a/test/js/parser/core/basics_test.exs b/test/js/parser/core/basics_test.exs new file mode 100644 index 000000000..837eb806b --- /dev/null +++ b/test/js/parser/core/basics_test.exs @@ -0,0 +1,52 @@ +defmodule QuickBEAM.JS.Parser.Core.BasicsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + alias QuickBEAM.JS.Parser.Lexer + + test "lexer tracks line terminators before tokens" do + assert {:ok, tokens} = Lexer.tokenize("let x = 1\nreturn x") + return = Enum.find(tokens, &(&1.value == "return")) + x = tokens |> Enum.reverse() |> Enum.find(&(&1.value == "x")) + + assert return.before_line_terminator? + refute x.before_line_terminator? + end + + test "parses variable declarations with Pratt expression precedence" do + assert {:ok, %AST.Program{body: [declaration]}} = Parser.parse("let x = 1 + 2 * 3;") + assert %AST.VariableDeclaration{kind: :let, declarations: [declarator]} = declaration + assert %AST.Identifier{name: "x"} = declarator.id + + assert %AST.BinaryExpression{operator: "+", right: %AST.BinaryExpression{operator: "*"}} = + declarator.init + end + + test "parses calls and member expressions" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("foo(1, bar).baz") + + assert %AST.ExpressionStatement{ + expression: %AST.MemberExpression{ + property: %AST.Identifier{name: "baz"}, + object: %AST.CallExpression{callee: %AST.Identifier{name: "foo"}, arguments: args} + } + } = statement + + assert [%AST.Literal{value: 1}, %AST.Identifier{name: "bar"}] = args + end + + test "return statement observes automatic semicolon insertion line terminator" do + assert {:error, %AST.Program{body: [return, expression]}, errors} = + Parser.parse("return\nvalue") + + assert %AST.ReturnStatement{argument: nil} = return + assert %AST.ExpressionStatement{expression: %AST.Identifier{name: "value"}} = expression + assert Enum.any?(errors, &(&1.message == "return statement not within function")) + end + + test "reports syntax errors while returning a partial AST" do + assert {:error, %AST.Program{}, [error | _]} = Parser.parse("const;") + assert error.message == "expected binding identifier" + end +end diff --git a/test/js/parser/core/braced_unicode_escape_identifier_test.exs b/test/js/parser/core/braced_unicode_escape_identifier_test.exs new file mode 100644 index 000000000..021a55385 --- /dev/null +++ b/test/js/parser/core/braced_unicode_escape_identifier_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Core.BracedUnicodeEscapeIdentifierTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible braced unicode escape identifier syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("var smile\\u{79} = 1;") + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + id: %AST.Identifier{name: "smiley"}, + init: %AST.Literal{value: 1} + } + ] + } = statement + end +end diff --git a/test/js/parser/core/directive_prologue_test.exs b/test/js/parser/core/directive_prologue_test.exs new file mode 100644 index 000000000..8402f7a02 --- /dev/null +++ b/test/js/parser/core/directive_prologue_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Core.DirectivePrologueTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict directive prologue syntax" do + source = """ + "use strict"; + function f() { "use strict"; return 1; } + """ + + assert {:ok, %AST.Program{body: [directive, function_decl]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{expression: %AST.Literal{value: "use strict"}} = directive + + assert %AST.FunctionDeclaration{ + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{expression: %AST.Literal{value: "use strict"}}, + %AST.ReturnStatement{} + ] + } + } = function_decl + end +end diff --git a/test/js/parser/core/hashbang_escape_test.exs b/test/js/parser/core/hashbang_escape_test.exs new file mode 100644 index 000000000..0fdad2a16 --- /dev/null +++ b/test/js/parser/core/hashbang_escape_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Core.HashbangEscapeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS escaped hashbang diagnostics" do + assert {:error, %AST.Program{}, errors} = Parser.parse(~S|\u0023\u0021|) + assert Enum.any?(errors, &(&1.message == "invalid unicode escape in identifier")) + end + + test "preserves escaped identifier syntax" do + assert {:ok, %AST.Program{}} = Parser.parse(~S|var \u0061 = 1;|) + end +end diff --git a/test/js/parser/core/hashbang_test.exs b/test/js/parser/core/hashbang_test.exs new file mode 100644 index 000000000..e9c782142 --- /dev/null +++ b/test/js/parser/core/hashbang_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Core.HashbangTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible hashbang comment syntax" do + source = """ + #!/usr/bin/env quickjs + value = 1; + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.Identifier{name: "value"}, + right: %AST.Literal{value: 1} + } + } = statement + end +end diff --git a/test/js/parser/core/html_comments_test.exs b/test/js/parser/core/html_comments_test.exs new file mode 100644 index 000000000..124f6141d --- /dev/null +++ b/test/js/parser/core/html_comments_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.Core.HTMLCommentsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible HTML open comments" do + source = """ + value = 1; + first-line comment after whitespace + /* block comment */ --> first-line comment after block comment + value = 1; + --> comment text + --> comment text after whitespace + /**/ --> comment text after block comment + value = 2; + """ + + assert {:ok, %AST.Program{body: statements}} = Parser.parse(source) + assert length(statements) == 2 + end +end diff --git a/test/js/parser/core/parse_semicolon_test.exs b/test/js/parser/core/parse_semicolon_test.exs new file mode 100644 index 000000000..5c4cc823d --- /dev/null +++ b/test/js/parser/core/parse_semicolon_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.Core.ParseSemicolonTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS parse semicolon yield/await regression" do + source = """ + function test_parse_semicolon() + { + function *f() + { + function func() { + } + yield 1; + var h = x => x + 1 + yield 2; + } + async function g() + { + function func() { + } + await 1; + var h = x => x + 1 + await 2; + } + } + """ + + assert {:ok, %AST.Program{body: [%AST.FunctionDeclaration{} = outer]}} = Parser.parse(source) + assert outer.id.name == "test_parse_semicolon" + + assert [ + %AST.FunctionDeclaration{id: %AST.Identifier{name: "f"}, generator: true}, + %AST.FunctionDeclaration{id: %AST.Identifier{name: "g"}, async: true} + ] = outer.body.body + end +end diff --git a/test/js/parser/core/unicode_escape_identifier_test.exs b/test/js/parser/core/unicode_escape_identifier_test.exs new file mode 100644 index 000000000..cc5e7f7ff --- /dev/null +++ b/test/js/parser/core/unicode_escape_identifier_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Core.UnicodeEscapeIdentifierTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible unicode escape identifier syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("var abc\\u0064 = 1;") + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + id: %AST.Identifier{name: "abcd"}, + init: %AST.Literal{value: 1} + } + ] + } = statement + end +end diff --git a/test/js/parser/core/unicode_identifier_test.exs b/test/js/parser/core/unicode_identifier_test.exs new file mode 100644 index 000000000..84f97b199 --- /dev/null +++ b/test/js/parser/core/unicode_identifier_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Core.UnicodeIdentifierTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible unicode identifier syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("var ȣ = 1;") + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + id: %AST.Identifier{name: "ȣ"}, + init: %AST.Literal{value: 1} + } + ] + } = statement + end +end diff --git a/test/js/parser/diagnostics/array_rest_not_last_test.exs b/test/js/parser/diagnostics/array_rest_not_last_test.exs new file mode 100644 index 000000000..140fda90e --- /dev/null +++ b/test/js/parser/diagnostics/array_rest_not_last_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ArrayRestNotLastTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS array rest binding must be last diagnostics" do + source = "var [first, ...rest, after] = value;" + + assert {:error, + %AST.Program{ + body: [ + %AST.VariableDeclaration{declarations: [%AST.VariableDeclarator{id: pattern}]} + ] + }, errors} = + Parser.parse(source) + + assert %AST.ArrayPattern{ + elements: [ + %AST.Identifier{name: "first"}, + %AST.RestElement{argument: %AST.Identifier{name: "rest"}}, + %AST.Identifier{name: "after"} + ] + } = pattern + + assert Enum.any?(errors, &(&1.message == "rest element must be last")) + end +end diff --git a/test/js/parser/diagnostics/arrow_destructured_duplicate_parameter_test.exs b/test/js/parser/diagnostics/arrow_destructured_duplicate_parameter_test.exs new file mode 100644 index 000000000..427fe0985 --- /dev/null +++ b/test/js/parser/diagnostics/arrow_destructured_duplicate_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ArrowDestructuredDuplicateParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS arrow destructured duplicate parameter diagnostics" do + source = "value = ({ a }, [a]) => a;" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/arrow_duplicate_parameter_test.exs b/test/js/parser/diagnostics/arrow_duplicate_parameter_test.exs new file mode 100644 index 000000000..15188741f --- /dev/null +++ b/test/js/parser/diagnostics/arrow_duplicate_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ArrowDuplicateParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS arrow duplicate parameter diagnostics" do + for source <- ["value = (a, a) => a;", "value = async (a, a) => a;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end + end +end diff --git a/test/js/parser/diagnostics/arrow_future_reserved_parameter_test.exs b/test/js/parser/diagnostics/arrow_future_reserved_parameter_test.exs new file mode 100644 index 000000000..4238bda2f --- /dev/null +++ b/test/js/parser/diagnostics/arrow_future_reserved_parameter_test.exs @@ -0,0 +1,11 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ArrowFutureReservedParameterTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects enum as an arrow binding identifier" do + assert {:error, %AST.Program{}, errors} = Parser.parse("var af = enum => 1;") + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end +end diff --git a/test/js/parser/diagnostics/arrow_line_terminator_test.exs b/test/js/parser/diagnostics/arrow_line_terminator_test.exs new file mode 100644 index 000000000..4f38047f1 --- /dev/null +++ b/test/js/parser/diagnostics/arrow_line_terminator_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ArrowLineTerminatorTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects line terminator before parenless arrow" do + for source <- ["var af = x\n=> {};", "x\n=> x;"] do + assert {:error, %AST.Program{}, _errors} = Parser.parse(source) + end + end + + test "preserves same-line parenless arrow" do + assert {:ok, %AST.Program{}} = Parser.parse("var af = x => x;") + end +end diff --git a/test/js/parser/diagnostics/arrow_parameter_context_test.exs b/test/js/parser/diagnostics/arrow_parameter_context_test.exs new file mode 100644 index 000000000..4d1b0f576 --- /dev/null +++ b/test/js/parser/diagnostics/arrow_parameter_context_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ArrowParameterContextTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects await arrow parameter in class static block" do + source = "class C { static { (await => 0); } }" + + assert {:error, %AST.Program{}, _errors} = Parser.parse(source) + end + + test "rejects yield expression in generator arrow parameter initializer" do + source = "function *g() { (x = yield) => {}; }" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end +end diff --git a/test/js/parser/diagnostics/async_arrow_body_binding_test.exs b/test/js/parser/diagnostics/async_arrow_body_binding_test.exs new file mode 100644 index 000000000..67ddf2737 --- /dev/null +++ b/test/js/parser/diagnostics/async_arrow_body_binding_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncArrowBodyBindingTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects await bindings in async arrow bodies" do + for source <- ["async () => { var await; }", "async () => { var aw\\u0061it; }"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end + end + + test "rejects await and yield async generator function names" do + for source <- ["value = async function *await() {};", "value = async function *yield() {};"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message in [ + "await parameter not allowed in async function", + "yield parameter not allowed in generator function" + ]) + ) + end + end +end diff --git a/test/js/parser/diagnostics/async_await_parameter_test.exs b/test/js/parser/diagnostics/async_await_parameter_test.exs new file mode 100644 index 000000000..7986406cc --- /dev/null +++ b/test/js/parser/diagnostics/async_await_parameter_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncAwaitParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS async function await parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{async: true}]}, errors} = + Parser.parse("async function f(await) {}") + + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end + + test "ports QuickJS async arrow await parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("fn = async (await) => await;") + + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end +end diff --git a/test/js/parser/diagnostics/async_destructured_await_parameter_test.exs b/test/js/parser/diagnostics/async_destructured_await_parameter_test.exs new file mode 100644 index 000000000..fb4627885 --- /dev/null +++ b/test/js/parser/diagnostics/async_destructured_await_parameter_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncDestructuredAwaitParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS async destructured await parameter diagnostics" do + source = "async function f({ await }) {}" + + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{async: true}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end +end diff --git a/test/js/parser/diagnostics/async_function_await_name_test.exs b/test/js/parser/diagnostics/async_function_await_name_test.exs new file mode 100644 index 000000000..01305bb20 --- /dev/null +++ b/test/js/parser/diagnostics/async_function_await_name_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncFunctionAwaitNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows await as an async function name in script code" do + assert {:ok, %AST.Program{}} = Parser.parse("async function await() { return 1; }") + end + + test "rejects await as an async generator function name" do + assert {:error, %AST.Program{}, errors} = Parser.parse("value = async function *await() {};") + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end +end diff --git a/test/js/parser/diagnostics/async_function_expression_await_parameter_test.exs b/test/js/parser/diagnostics/async_function_expression_await_parameter_test.exs new file mode 100644 index 000000000..eb098a04b --- /dev/null +++ b/test/js/parser/diagnostics/async_function_expression_await_parameter_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncFunctionExpressionAwaitParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS async function expression await parameter diagnostics" do + source = "value = async function named(await) {};" + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end +end diff --git a/test/js/parser/diagnostics/async_generator_body_binding_test.exs b/test/js/parser/diagnostics/async_generator_body_binding_test.exs new file mode 100644 index 000000000..3780b719d --- /dev/null +++ b/test/js/parser/diagnostics/async_generator_body_binding_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncGeneratorBodyBindingTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects await bindings and labels in async function bodies" do + for source <- [ + "value = async function () { var await; };", + "value = async function () { await: statement; };" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end + end + + test "rejects yield bindings and labels in async generator bodies" do + for source <- [ + "value = async function *() { var yield; };", + "value = async function *() { yield: statement; };" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "yield parameter not allowed in generator function") + ) + end + end +end diff --git a/test/js/parser/diagnostics/async_generator_expression_parameter_test.exs b/test/js/parser/diagnostics/async_generator_expression_parameter_test.exs new file mode 100644 index 000000000..05fec9bc3 --- /dev/null +++ b/test/js/parser/diagnostics/async_generator_expression_parameter_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncGeneratorExpressionParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS async generator expression parameter diagnostics" do + source = "value = async function *g(await, { yield }) {};" + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end +end diff --git a/test/js/parser/diagnostics/async_generator_parameter_test.exs b/test/js/parser/diagnostics/async_generator_parameter_test.exs new file mode 100644 index 000000000..d65861c80 --- /dev/null +++ b/test/js/parser/diagnostics/async_generator_parameter_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncGeneratorParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS async generator await parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{async: true, generator: true}]}, + errors} = + Parser.parse("async function *g(await) {}") + + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end + + test "ports QuickJS async generator yield parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{async: true, generator: true}]}, + errors} = + Parser.parse("async function *g({ yield }) {}") + + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end +end diff --git a/test/js/parser/diagnostics/async_generator_yield_parameter_test.exs b/test/js/parser/diagnostics/async_generator_yield_parameter_test.exs new file mode 100644 index 000000000..c08bfa5df --- /dev/null +++ b/test/js/parser/diagnostics/async_generator_yield_parameter_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncGeneratorYieldParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS async generator object method yield parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("object = { async *method({ yield }) {} };") + + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end + + test "ports QuickJS async generator class method yield parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C { async *method({ yield }) {} }") + + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end +end diff --git a/test/js/parser/diagnostics/async_method_await_parameter_test.exs b/test/js/parser/diagnostics/async_method_await_parameter_test.exs new file mode 100644 index 000000000..e5ae53caf --- /dev/null +++ b/test/js/parser/diagnostics/async_method_await_parameter_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncMethodAwaitParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS async object method await parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("object = { async method(await) {} };") + + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end + + test "ports QuickJS async class method await parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C { async method(await) {} }") + + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end +end diff --git a/test/js/parser/diagnostics/async_parameter_await_expression_test.exs b/test/js/parser/diagnostics/async_parameter_await_expression_test.exs new file mode 100644 index 000000000..1bdf9014d --- /dev/null +++ b/test/js/parser/diagnostics/async_parameter_await_expression_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncParameterAwaitExpressionTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects await expressions in async function parameter defaults" do + for source <- [ + "async function f(x = await 1) {}", + "value = async function*(x = await 1) {};", + "value = async (x = await 1) => x;" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end + end +end diff --git a/test/js/parser/diagnostics/async_strict_name_test.exs b/test/js/parser/diagnostics/async_strict_name_test.exs new file mode 100644 index 000000000..fcfc9f947 --- /dev/null +++ b/test/js/parser/diagnostics/async_strict_name_test.exs @@ -0,0 +1,25 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AsyncStrictNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows restricted async function names outside strict mode" do + for source <- ["value = async function eval() {};", "value = async function *arguments() {};"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "allows restricted async function parameters outside strict mode" do + for source <- ["async function f(eval) {}", "value = async (arguments) => arguments;"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "rejects restricted async function parameters when the body is strict" do + source = ~S|value = async (arguments) => { "use strict"; return arguments; };| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/await_context_test.exs b/test/js/parser/diagnostics/await_context_test.exs new file mode 100644 index 000000000..f656bc2f5 --- /dev/null +++ b/test/js/parser/diagnostics/await_context_test.exs @@ -0,0 +1,40 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.AwaitContextTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module await expression context diagnostics" do + assert {:ok, %AST.Program{body: [%AST.ExpressionStatement{}]}} = + Parser.parse("await value;", source_type: :module) + end + + test "ports QuickJS module await regexp expression syntax" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AwaitExpression{argument: %AST.Literal{raw: "/x.y/g"}} + } + ] + }} = Parser.parse("await /x.y/g;", source_type: :module) + end + + test "ports QuickJS script await identifier syntax" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [%AST.VariableDeclarator{id: %AST.Identifier{name: "await"}}] + }, + %AST.ExpressionStatement{expression: %AST.Identifier{name: "await"}} + ] + }} = Parser.parse("var await = 1; await;") + end + + test "ports QuickJS non-async function await identifier syntax" do + assert {:ok, %AST.Program{body: [%AST.FunctionDeclaration{}]}} = + Parser.parse("function f() { var await = 1; await; }") + end +end diff --git a/test/js/parser/diagnostics/bigint_separator_error_test.exs b/test/js/parser/diagnostics/bigint_separator_error_test.exs new file mode 100644 index 000000000..9d56c0dfa --- /dev/null +++ b/test/js/parser/diagnostics/bigint_separator_error_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.BigIntSeparatorErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS bigint numeric separator diagnostics" do + for source <- ["value = 1__0n;", "value = 0x_Fn;", "value = 0b_1n;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid numeric separator")) + end + end +end diff --git a/test/js/parser/diagnostics/bigint_trailing_separator_error_test.exs b/test/js/parser/diagnostics/bigint_trailing_separator_error_test.exs new file mode 100644 index 000000000..b03d441d5 --- /dev/null +++ b/test/js/parser/diagnostics/bigint_trailing_separator_error_test.exs @@ -0,0 +1,12 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.BigIntTrailingSeparatorErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS bigint trailing separator diagnostics" do + assert {:error, %AST.Program{}, errors} = Parser.parse("value = 1_n;") + assert Enum.any?(errors, &(&1.message == "invalid numeric separator")) + end +end diff --git a/test/js/parser/diagnostics/block_duplicate_lexical_declaration_test.exs b/test/js/parser/diagnostics/block_duplicate_lexical_declaration_test.exs new file mode 100644 index 000000000..3fc5be1af --- /dev/null +++ b/test/js/parser/diagnostics/block_duplicate_lexical_declaration_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.BlockDuplicateLexicalDeclarationTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS duplicate lexical declarations in block diagnostics" do + assert {:error, %AST.Program{body: [%AST.BlockStatement{}]}, errors} = + Parser.parse("{ let value; const value = 1; }") + + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end + + test "ports QuickJS duplicate lexical declarations in function body diagnostics" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse("function f() { let value; let value; }") + + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end +end diff --git a/test/js/parser/diagnostics/block_function_redeclaration_test.exs b/test/js/parser/diagnostics/block_function_redeclaration_test.exs new file mode 100644 index 000000000..0e3108ee5 --- /dev/null +++ b/test/js/parser/diagnostics/block_function_redeclaration_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.BlockFunctionRedeclarationTest do + use ExUnit.Case, async: true + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects duplicate block function lexical conflicts" do + for source <- ["{ async function f() {} function f() {} }", "{ function f() {} class f {} }"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end + end + + test "preserves sloppy duplicate plain block function declarations" do + assert {:ok, %AST.Program{}} = Parser.parse("{ function f() {} function f() {} }") + end + + test "rejects block function var conflicts" do + for source <- ["{ function f() {} var f; }", "{ { var f; } function f() {} }"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "lexical declaration conflicts with var declaration") + ) + end + end + + test "preserves top-level function and var redeclaration" do + assert {:ok, %AST.Program{}} = Parser.parse("function f() {} var f;") + end +end diff --git a/test/js/parser/diagnostics/block_function_strict_redeclaration_test.exs b/test/js/parser/diagnostics/block_function_strict_redeclaration_test.exs new file mode 100644 index 000000000..28d65dfe0 --- /dev/null +++ b/test/js/parser/diagnostics/block_function_strict_redeclaration_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.BlockFunctionStrictRedeclarationTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects duplicate block function declarations in strict scripts" do + assert {:error, %AST.Program{}, errors} = + Parser.parse(~S|"use strict"; { function f() {} function f() {} }|) + + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end + + test "allows nested block lexical declarations to shadow function parameters" do + assert {:ok, %AST.Program{}} = Parser.parse("function fn(a) { { let a = 1; } }") + end +end diff --git a/test/js/parser/diagnostics/block_lexical_var_conflict_test.exs b/test/js/parser/diagnostics/block_lexical_var_conflict_test.exs new file mode 100644 index 000000000..dc185511f --- /dev/null +++ b/test/js/parser/diagnostics/block_lexical_var_conflict_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.BlockLexicalVarConflictTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS block lexical declaration conflict with var diagnostics" do + assert {:error, %AST.Program{body: [%AST.BlockStatement{}]}, errors} = + Parser.parse("{ let value; var value; }") + + assert Enum.any?( + errors, + &(&1.message == "lexical declaration conflicts with var declaration") + ) + end + + test "ports QuickJS function body lexical declaration conflict with var diagnostics" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse("function f() { const value = 1; var value; }") + + assert Enum.any?( + errors, + &(&1.message == "lexical declaration conflicts with var declaration") + ) + end +end diff --git a/test/js/parser/diagnostics/break_continue_context_test.exs b/test/js/parser/diagnostics/break_continue_context_test.exs new file mode 100644 index 000000000..a0fa78430 --- /dev/null +++ b/test/js/parser/diagnostics/break_continue_context_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.BreakContinueContextTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS break outside loop or switch diagnostics" do + assert {:error, %AST.Program{body: [%AST.BreakStatement{}]}, errors} = Parser.parse("break;") + assert Enum.any?(errors, &(&1.message == "break statement not within loop or switch")) + end + + test "ports QuickJS continue outside loop diagnostics" do + assert {:error, %AST.Program{body: [%AST.ContinueStatement{}]}, errors} = + Parser.parse("continue;") + + assert Enum.any?(errors, &(&1.message == "continue statement not within loop")) + end + + test "ports QuickJS switch continue without loop diagnostics" do + assert {:error, %AST.Program{body: [%AST.SwitchStatement{}]}, errors} = + Parser.parse("switch (value) { case 1: continue; }") + + assert Enum.any?(errors, &(&1.message == "continue statement not within loop")) + end +end diff --git a/test/js/parser/diagnostics/break_label_function_expression_test.exs b/test/js/parser/diagnostics/break_label_function_expression_test.exs new file mode 100644 index 000000000..3a0d97fc4 --- /dev/null +++ b/test/js/parser/diagnostics/break_label_function_expression_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.BreakLabelFunctionExpressionTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "validates break labels inside function expressions" do + source = + "(function(){ outer: do { break missing; } while (false); missing: do {} while(false); })();" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "undefined break label")) + end + + test "keeps return valid inside function expressions" do + assert {:ok, %AST.Program{}} = Parser.parse("(function(){ return; })();") + end +end diff --git a/test/js/parser/diagnostics/call_logical_assignment_target_test.exs b/test/js/parser/diagnostics/call_logical_assignment_target_test.exs new file mode 100644 index 000000000..4af7e5bd4 --- /dev/null +++ b/test/js/parser/diagnostics/call_logical_assignment_target_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.CallLogicalAssignmentTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects call expressions as logical assignment targets" do + for source <- ["f() &&= 1;", "f() ||= 1;", "f() ??= 1;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid assignment target")) + end + end + + test "preserves sloppy Annex B direct and compound call assignment targets" do + for source <- ["f() = 1;", "f() += 1;"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/diagnostics/catch_parameter_lexical_conflict_test.exs b/test/js/parser/diagnostics/catch_parameter_lexical_conflict_test.exs new file mode 100644 index 000000000..738f07838 --- /dev/null +++ b/test/js/parser/diagnostics/catch_parameter_lexical_conflict_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.CatchParameterLexicalConflictTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS catch parameter lexical conflict diagnostics" do + assert {:error, %AST.Program{body: [%AST.TryStatement{}]}, errors} = + Parser.parse("try {} catch (error) { let error; }") + + assert Enum.any?( + errors, + &(&1.message == "catch parameter conflicts with lexical declaration") + ) + end + + test "ports QuickJS destructured catch parameter lexical conflict diagnostics" do + assert {:error, %AST.Program{body: [%AST.TryStatement{}]}, errors} = + Parser.parse("try {} catch ({ error }) { const error = 1; }") + + assert Enum.any?( + errors, + &(&1.message == "catch parameter conflicts with lexical declaration") + ) + end +end diff --git a/test/js/parser/diagnostics/class_accessor_restricted_parameter_test.exs b/test/js/parser/diagnostics/class_accessor_restricted_parameter_test.exs new file mode 100644 index 000000000..ea7b335b5 --- /dev/null +++ b/test/js/parser/diagnostics/class_accessor_restricted_parameter_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ClassAccessorRestrictedParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class accessor restricted parameter diagnostics" do + source = "class C { set value(eval) { this.value = eval; } }" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/class_delete_identifier_test.exs b/test/js/parser/diagnostics/class_delete_identifier_test.exs new file mode 100644 index 000000000..0428e5e01 --- /dev/null +++ b/test/js/parser/diagnostics/class_delete_identifier_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ClassDeleteIdentifierTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class method delete identifier strict diagnostics" do + source = "class C { method() { delete value; } }" + + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "delete of identifier not allowed in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/class_element_super_call_test.exs b/test/js/parser/diagnostics/class_element_super_call_test.exs new file mode 100644 index 000000000..7cd60d45e --- /dev/null +++ b/test/js/parser/diagnostics/class_element_super_call_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ClassElementSuperCallTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS static block super call diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C extends B { static { super(); } }") + + assert Enum.any?( + errors, + &(&1.message == "super call not allowed outside derived constructor") + ) + end + + test "ports QuickJS field initializer super call diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C extends B { field = super(); }") + + assert Enum.any?( + errors, + &(&1.message == "super call not allowed outside derived constructor") + ) + end +end diff --git a/test/js/parser/diagnostics/class_generator_duplicate_parameter_test.exs b/test/js/parser/diagnostics/class_generator_duplicate_parameter_test.exs new file mode 100644 index 000000000..7a1aa0015 --- /dev/null +++ b/test/js/parser/diagnostics/class_generator_duplicate_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ClassGeneratorDuplicateParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class generator duplicate parameter diagnostics" do + source = "class C { *method(a, a) { yield a; } }" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/class_legacy_octal_literal_test.exs b/test/js/parser/diagnostics/class_legacy_octal_literal_test.exs new file mode 100644 index 000000000..f2b3becea --- /dev/null +++ b/test/js/parser/diagnostics/class_legacy_octal_literal_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ClassLegacyOctalLiteralTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class method legacy octal literal diagnostics" do + source = "class C { method() { return 010; } }" + + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "legacy octal literal not allowed in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/class_method_duplicate_parameter_test.exs b/test/js/parser/diagnostics/class_method_duplicate_parameter_test.exs new file mode 100644 index 000000000..cb6bc8cb7 --- /dev/null +++ b/test/js/parser/diagnostics/class_method_duplicate_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ClassMethodDuplicateParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class method duplicate parameter diagnostics" do + source = "class C { method(a, a) { return a; } }" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/class_octal_escape_test.exs b/test/js/parser/diagnostics/class_octal_escape_test.exs new file mode 100644 index 000000000..fcabeca6c --- /dev/null +++ b/test/js/parser/diagnostics/class_octal_escape_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ClassOctalEscapeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class method octal string escape diagnostics" do + source = ~S|class C { method() { return "\1"; } }| + + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "octal escape sequence not allowed in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/class_super_call_context_test.exs b/test/js/parser/diagnostics/class_super_call_context_test.exs new file mode 100644 index 000000000..50d9f8fe0 --- /dev/null +++ b/test/js/parser/diagnostics/class_super_call_context_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ClassSuperCallContextTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS base class constructor super call diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C { constructor() { super(); } }") + + assert Enum.any?( + errors, + &(&1.message == "super call not allowed outside derived constructor") + ) + end + + test "ports QuickJS class method super call diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C extends B { method() { super(); } }") + + assert Enum.any?( + errors, + &(&1.message == "super call not allowed outside derived constructor") + ) + end +end diff --git a/test/js/parser/diagnostics/class_with_statement_test.exs b/test/js/parser/diagnostics/class_with_statement_test.exs new file mode 100644 index 000000000..001fb772a --- /dev/null +++ b/test/js/parser/diagnostics/class_with_statement_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ClassWithStatementTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class method with-statement strict diagnostics" do + source = "class C { method() { with (object) { value; } } }" + + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "with statement not allowed in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/coalesce_mixing_test.exs b/test/js/parser/diagnostics/coalesce_mixing_test.exs new file mode 100644 index 000000000..ee33afb4e --- /dev/null +++ b/test/js/parser/diagnostics/coalesce_mixing_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.CoalesceMixingTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects unparenthesized coalesce mixed with logical and/or" do + for source <- ["0 && 0 ?? true;", "0 || 0 ?? true;", "0 ?? 0 && true;", "0 ?? 0 || true;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "cannot mix ?? with && or ||")) + end + end + + test "allows parenthesized coalesce and logical combinations" do + for source <- ["(0 && 0) ?? true;", "0 ?? (0 || true);"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/diagnostics/const_initializer_test.exs b/test/js/parser/diagnostics/const_initializer_test.exs new file mode 100644 index 000000000..c5aa1f527 --- /dev/null +++ b/test/js/parser/diagnostics/const_initializer_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ConstInitializerTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible const initializer syntax error" do + assert {:error, %AST.Program{}, errors} = Parser.parse("const value;") + assert Enum.any?(errors, &(&1.message == "missing initializer in const declaration")) + end + + test "ports QuickJS-compatible const declaration initializer syntax" do + assert {:ok, %AST.Program{body: [%AST.VariableDeclaration{kind: :const}]}} = + Parser.parse("const value = 1;") + end +end diff --git a/test/js/parser/diagnostics/destructuring_assignment_nested_target_test.exs b/test/js/parser/diagnostics/destructuring_assignment_nested_target_test.exs new file mode 100644 index 000000000..e1577e543 --- /dev/null +++ b/test/js/parser/diagnostics/destructuring_assignment_nested_target_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.DestructuringAssignmentNestedTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects sequence expressions inside nested assignment patterns" do + for source <- ["0, [[(x, y)]] = [[]];", "0, { x: [(x, y)] } = { x: [] };"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid destructuring target")) + end + end + + test "rejects accessors inside nested assignment patterns" do + assert {:error, %AST.Program{}, errors} = Parser.parse("0, [{ get x() {} }] = [{}];") + assert Enum.any?(errors, &(&1.message == "invalid destructuring target")) + end +end diff --git a/test/js/parser/diagnostics/destructuring_assignment_rest_test.exs b/test/js/parser/diagnostics/destructuring_assignment_rest_test.exs new file mode 100644 index 000000000..affa4c335 --- /dev/null +++ b/test/js/parser/diagnostics/destructuring_assignment_rest_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.DestructuringAssignmentRestTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects assignment rest elements before additional elements" do + for source <- [ + "0, [...x, y] = [];", + "0, [...x,] = [];", + "0, [...x, ,] = [];", + "0, [...x, ...y] = [];", + "0, {...rest, b} = {};" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid destructuring target")) + end + end + + test "rejects assignment rest element initializers" do + assert {:error, %AST.Program{}, errors} = Parser.parse("0, [...x = 1] = [];") + assert Enum.any?(errors, &(&1.message == "invalid destructuring target")) + end + + test "preserves nested assignment rest patterns" do + for source <- ["0, [...[x]] = [];", "0, [...{x}] = [];"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/diagnostics/destructuring_assignment_target_test.exs b/test/js/parser/diagnostics/destructuring_assignment_target_test.exs new file mode 100644 index 000000000..8928958f2 --- /dev/null +++ b/test/js/parser/diagnostics/destructuring_assignment_target_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.DestructuringAssignmentTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects reserved shorthand identifiers in object assignment patterns" do + for source <- [ + "var x = { break } = value;", + "var x = { default } = value;", + "var x = { tr\\u0079 } = value;" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid destructuring target")) + end + end + + test "rejects yield shorthand in generator object assignment patterns" do + source = "function* g() { 0, { yield } = value; }" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid destructuring target")) + end + + test "preserves named properties in object assignment patterns" do + assert {:ok, %AST.Program{}} = Parser.parse("var value; ({ default: value } = object);") + end +end diff --git a/test/js/parser/diagnostics/duplicate_constructor_test.exs b/test/js/parser/diagnostics/duplicate_constructor_test.exs new file mode 100644 index 000000000..9823ef219 --- /dev/null +++ b/test/js/parser/diagnostics/duplicate_constructor_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.DuplicateConstructorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS duplicate class constructor diagnostics" do + source = """ + class C { + constructor() {} + constructor(value) { this.value = value; } + } + """ + + assert {:error, + %AST.Program{ + body: [ + %AST.ClassDeclaration{body: [%AST.MethodDefinition{}, %AST.MethodDefinition{}]} + ] + }, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "duplicate constructor")) + end +end diff --git a/test/js/parser/diagnostics/duplicate_label_test.exs b/test/js/parser/diagnostics/duplicate_label_test.exs new file mode 100644 index 000000000..36dacffcd --- /dev/null +++ b/test/js/parser/diagnostics/duplicate_label_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.DuplicateLabelTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS duplicate nested label diagnostics" do + assert {:error, %AST.Program{body: [%AST.LabeledStatement{}]}, errors} = + Parser.parse("label: label: statement;") + + assert Enum.any?(errors, &(&1.message == "duplicate label")) + end + + test "ports QuickJS duplicate label inside labelled loop diagnostics" do + source = "label: while (value) { label: break label; }" + + assert {:error, %AST.Program{body: [%AST.LabeledStatement{}]}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "duplicate label")) + end +end diff --git a/test/js/parser/diagnostics/duplicate_lexical_declaration_test.exs b/test/js/parser/diagnostics/duplicate_lexical_declaration_test.exs new file mode 100644 index 000000000..a59e381de --- /dev/null +++ b/test/js/parser/diagnostics/duplicate_lexical_declaration_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.DuplicateLexicalDeclarationTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS duplicate let declaration diagnostics" do + assert {:error, %AST.Program{body: [%AST.VariableDeclaration{}, %AST.VariableDeclaration{}]}, + errors} = + Parser.parse("let value; let value;") + + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end + + test "ports QuickJS duplicate const and class declaration diagnostics" do + assert {:error, %AST.Program{body: [%AST.VariableDeclaration{}, %AST.ClassDeclaration{}]}, + errors} = + Parser.parse("const C = 1; class C {}") + + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end +end diff --git a/test/js/parser/diagnostics/duplicate_private_accessor_test.exs b/test/js/parser/diagnostics/duplicate_private_accessor_test.exs new file mode 100644 index 000000000..f2af6e742 --- /dev/null +++ b/test/js/parser/diagnostics/duplicate_private_accessor_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.DuplicatePrivateAccessorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS duplicate private getter diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C { get #value() {} get #value() {} }") + + assert Enum.any?(errors, &(&1.message == "duplicate private name")) + end + + test "ports QuickJS private getter setter pair syntax" do + assert {:ok, %AST.Program{body: [%AST.ClassDeclaration{body: [getter, setter]}]}} = + Parser.parse("class C { get #value() {} set #value(value) {} }") + + assert %AST.MethodDefinition{key: %AST.PrivateIdentifier{name: "value"}, kind: :get} = getter + assert %AST.MethodDefinition{key: %AST.PrivateIdentifier{name: "value"}, kind: :set} = setter + end +end diff --git a/test/js/parser/diagnostics/duplicate_private_name_test.exs b/test/js/parser/diagnostics/duplicate_private_name_test.exs new file mode 100644 index 000000000..8da545059 --- /dev/null +++ b/test/js/parser/diagnostics/duplicate_private_name_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.DuplicatePrivateNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS duplicate private field diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C { #value; #value; }") + + assert Enum.any?(errors, &(&1.message == "duplicate private name")) + end + + test "ports QuickJS duplicate private method diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C { #value() {} #value() {} }") + + assert Enum.any?(errors, &(&1.message == "duplicate private name")) + end +end diff --git a/test/js/parser/diagnostics/duplicate_proto_property_test.exs b/test/js/parser/diagnostics/duplicate_proto_property_test.exs new file mode 100644 index 000000000..bf9b981a9 --- /dev/null +++ b/test/js/parser/diagnostics/duplicate_proto_property_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.DuplicateProtoPropertyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS duplicate __proto__ data property diagnostics" do + source = "object = { __proto__: first, \"__proto__\": second };" + + assert {:error, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{properties: properties} + } + } + ] + }, errors} = + Parser.parse(source) + + assert length(properties) == 2 + assert Enum.any?(errors, &(&1.message == "duplicate __proto__ property")) + end +end diff --git a/test/js/parser/diagnostics/duplicate_switch_default_test.exs b/test/js/parser/diagnostics/duplicate_switch_default_test.exs new file mode 100644 index 000000000..2691c5960 --- /dev/null +++ b/test/js/parser/diagnostics/duplicate_switch_default_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.DuplicateSwitchDefaultTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS duplicate switch default diagnostics" do + source = "switch (value) { default: first(); case 1: one(); default: second(); }" + + assert {:error, %AST.Program{body: [%AST.SwitchStatement{cases: [_first, _case, _second]}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "duplicate default clause")) + end +end diff --git a/test/js/parser/diagnostics/dynamic_import_update_target_test.exs b/test/js/parser/diagnostics/dynamic_import_update_target_test.exs new file mode 100644 index 000000000..c382b3906 --- /dev/null +++ b/test/js/parser/diagnostics/dynamic_import_update_target_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.DynamicImportUpdateTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects dynamic import calls as update targets" do + for source <- ["++import('mod')", "--import('mod')", "import('mod')++"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid assignment target")) + end + end +end diff --git a/test/js/parser/diagnostics/empty_catch_binding_error_test.exs b/test/js/parser/diagnostics/empty_catch_binding_error_test.exs new file mode 100644 index 000000000..d44ec199f --- /dev/null +++ b/test/js/parser/diagnostics/empty_catch_binding_error_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.EmptyCatchBindingErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS empty catch binding diagnostics" do + assert {:error, %AST.Program{body: [%AST.TryStatement{handler: %AST.CatchClause{}}]}, errors} = + Parser.parse("try { work(); } catch () { recover(); }") + + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end +end diff --git a/test/js/parser/diagnostics/escaped_async_contextual_keyword_test.exs b/test/js/parser/diagnostics/escaped_async_contextual_keyword_test.exs new file mode 100644 index 000000000..6beb8561b --- /dev/null +++ b/test/js/parser/diagnostics/escaped_async_contextual_keyword_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.EscapedAsyncContextualKeywordTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects escaped async as a contextual async function marker" do + for source <- ["\\u0061sync function f() {}", "\\u0061sync () => {}"] do + assert {:error, %AST.Program{}, _errors} = Parser.parse(source) + end + end + + test "preserves unescaped async contextual markers" do + for source <- ["async function f() {}", "async () => {}"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/diagnostics/exponentiation_unary_base_test.exs b/test/js/parser/diagnostics/exponentiation_unary_base_test.exs new file mode 100644 index 000000000..a271bae5c --- /dev/null +++ b/test/js/parser/diagnostics/exponentiation_unary_base_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ExponentiationUnaryBaseTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects unparenthesized unary expressions as exponentiation bases" do + for source <- [ + "-x ** y;", + "+x ** y;", + "typeof x ** y;", + "!x ** y;", + "~x ** y;", + "void x ** y;", + "delete x ** y;" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "unparenthesized unary expression cannot be exponentiation base") + ) + end + end + + test "allows parenthesized unary exponentiation bases" do + assert {:ok, %AST.Program{}} = Parser.parse("(-x) ** y;") + end +end diff --git a/test/js/parser/diagnostics/export_source_error_test.exs b/test/js/parser/diagnostics/export_source_error_test.exs new file mode 100644 index 000000000..7b6f5e697 --- /dev/null +++ b/test/js/parser/diagnostics/export_source_error_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ExportSourceErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS export source diagnostics" do + for source <- [ + ~S(export { value } from dep;), + ~S(export * from dep;), + ~S(export * as ns from dep;) + ] do + assert {:error, %AST.Program{source_type: :module}, errors} = + Parser.parse(source, source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected module source")) + end + end +end diff --git a/test/js/parser/diagnostics/for_in_initializer_test.exs b/test/js/parser/diagnostics/for_in_initializer_test.exs new file mode 100644 index 000000000..4a0b3c6f4 --- /dev/null +++ b/test/js/parser/diagnostics/for_in_initializer_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ForInInitializerTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS for-in initializer diagnostics" do + for source <- [ + "for (a = 0 in object) {}", + "for (var [a] = 0 in object) {}", + "for (var {a} = value in object) {}" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message =~ "initializer")) + end + end + + test "ports QuickJS multiple binding diagnostics in for-in/of declarations" do + for source <- ["for (let x, y in object) {}", "for (const x, y of values) {}"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "expected 'of' or 'in' in for control expression")) + end + end + + test "preserves QuickJS-compatible sloppy var identifier initializer" do + assert {:ok, %AST.Program{}} = Parser.parse("for (var a = 0 in object) {}") + end +end diff --git a/test/js/parser/diagnostics/for_in_of_initializer_test.exs b/test/js/parser/diagnostics/for_in_of_initializer_test.exs new file mode 100644 index 000000000..a03933a21 --- /dev/null +++ b/test/js/parser/diagnostics/for_in_of_initializer_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ForInOfInitializerTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS for-of declaration initializer diagnostics" do + assert {:error, %AST.Program{body: [%AST.ForOfStatement{}]}, errors} = + Parser.parse("for (let value = first of values) { break; }") + + assert Enum.any?(errors, &(&1.message == "for-in/of declaration cannot have initializer")) + end +end diff --git a/test/js/parser/diagnostics/formal_body_lexical_conflict_test.exs b/test/js/parser/diagnostics/formal_body_lexical_conflict_test.exs new file mode 100644 index 000000000..1a263d324 --- /dev/null +++ b/test/js/parser/diagnostics/formal_body_lexical_conflict_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.FormalBodyLexicalConflictTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects lexical declarations that conflict with formal parameters" do + for source <- [ + "async function f(value) { let value; }", + "value = async function *(value) { const value = 1; };" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end + end + + test "allows nested block lexical declarations to shadow formal parameters" do + assert {:ok, %AST.Program{}} = Parser.parse("function f(value) { { class value {} } }") + end +end diff --git a/test/js/parser/diagnostics/function_declaration_statement_position_test.exs b/test/js/parser/diagnostics/function_declaration_statement_position_test.exs new file mode 100644 index 000000000..b6eb79d2c --- /dev/null +++ b/test/js/parser/diagnostics/function_declaration_statement_position_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.FunctionDeclarationStatementPositionTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS function declaration single-statement diagnostics" do + for source <- [ + "while (false) function g() {}", + "do function g() {} while (false)", + "for (;;) function g() {}" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "function declarations can't appear in single-statement context") + ) + end + end + + test "preserves function declarations in blocks" do + assert {:ok, %AST.Program{}} = Parser.parse("while (false) { function g() {} }") + end +end diff --git a/test/js/parser/diagnostics/function_super_context_test.exs b/test/js/parser/diagnostics/function_super_context_test.exs new file mode 100644 index 000000000..e18d76dcb --- /dev/null +++ b/test/js/parser/diagnostics/function_super_context_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.FunctionSuperContextTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects super property in function and arrow expressions outside methods" do + for source <- [ + "value = async function () { super.prop; };", + "value = async () => super.prop;", + "value = async () => { super.prop; };" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "super not allowed outside class method")) + end + end + + test "rejects super calls in function and arrow expressions outside constructors" do + for source <- ["value = async function () { super(); };", "value = async () => super();"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "super not allowed outside class method")) + end + end +end diff --git a/test/js/parser/diagnostics/future_reserved_words_test.exs b/test/js/parser/diagnostics/future_reserved_words_test.exs new file mode 100644 index 000000000..954a74a45 --- /dev/null +++ b/test/js/parser/diagnostics/future_reserved_words_test.exs @@ -0,0 +1,41 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.FutureReservedWordsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows strict-mode future reserved words as sloppy bindings" do + for name <- ~w[implements interface package private protected public] do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [%AST.VariableDeclarator{id: %AST.Identifier{name: ^name}}] + } + ] + }} = Parser.parse("var #{name};") + end + end + + test "rejects strict-mode future reserved words in strict bindings" do + for name <- ~w[implements interface package private protected public] do + assert {:error, %AST.Program{}, errors} = Parser.parse(~s|"use strict"; var #{name};|) + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end + end + + test "allows strict-mode future reserved words as sloppy identifier references" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.UnaryExpression{ + operator: "typeof", + argument: %AST.Identifier{name: "public"} + } + } + ] + }} = Parser.parse("typeof public;") + end +end diff --git a/test/js/parser/diagnostics/generator_destructured_yield_parameter_test.exs b/test/js/parser/diagnostics/generator_destructured_yield_parameter_test.exs new file mode 100644 index 000000000..e6a3f39c7 --- /dev/null +++ b/test/js/parser/diagnostics/generator_destructured_yield_parameter_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.GeneratorDestructuredYieldParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS generator destructured yield parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{generator: true}]}, errors} = + Parser.parse("function *g({ yield }) {}") + + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end +end diff --git a/test/js/parser/diagnostics/generator_method_yield_parameter_test.exs b/test/js/parser/diagnostics/generator_method_yield_parameter_test.exs new file mode 100644 index 000000000..924bcc0b2 --- /dev/null +++ b/test/js/parser/diagnostics/generator_method_yield_parameter_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.GeneratorMethodYieldParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS generator object method yield parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("object = { *method({ yield }) {} };") + + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end + + test "ports QuickJS generator class method yield parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C { *method({ yield }) {} }") + + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end +end diff --git a/test/js/parser/diagnostics/generator_yield_no_in_test.exs b/test/js/parser/diagnostics/generator_yield_no_in_test.exs new file mode 100644 index 000000000..e682fa6c4 --- /dev/null +++ b/test/js/parser/diagnostics/generator_yield_no_in_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.GeneratorYieldNoInTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects yield operands containing in inside for init no-in context" do + for source <- [ + "function* g() { for (yield '' in {}; ; ) ; }", + "function* g() { for (yield * '' in {}; ; ) ; }" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "yield expression not allowed here")) + end + end +end diff --git a/test/js/parser/diagnostics/generator_yield_parameter_initializer_test.exs b/test/js/parser/diagnostics/generator_yield_parameter_initializer_test.exs new file mode 100644 index 000000000..376f078a8 --- /dev/null +++ b/test/js/parser/diagnostics/generator_yield_parameter_initializer_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.GeneratorYieldParameterInitializerTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects yield expressions in generator parameter initializers" do + for source <- ["function *g(value = yield) {}", "async function *g(value = yield) {}"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "yield parameter not allowed in generator function") + ) + end + end +end diff --git a/test/js/parser/diagnostics/generator_yield_parameter_test.exs b/test/js/parser/diagnostics/generator_yield_parameter_test.exs new file mode 100644 index 000000000..3ac9cc671 --- /dev/null +++ b/test/js/parser/diagnostics/generator_yield_parameter_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.GeneratorYieldParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS generator yield parameter diagnostics" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{generator: true}]}, errors} = + Parser.parse("function *g(yield) {}") + + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end +end diff --git a/test/js/parser/diagnostics/if_syntax_error_test.exs b/test/js/parser/diagnostics/if_syntax_error_test.exs new file mode 100644 index 000000000..388289c1f --- /dev/null +++ b/test/js/parser/diagnostics/if_syntax_error_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.IfSyntaxErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS if statement missing-parentheses syntax errors" do + for source <- ["if 'abc'", "if `abc`", "if /abc/", "if abcd", "if abc\\u0064", "if \\u0123"] do + assert {:error, %AST.Program{}, [_ | _]} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/diagnostics/import_meta_context_test.exs b/test/js/parser/diagnostics/import_meta_context_test.exs new file mode 100644 index 000000000..fcc348d80 --- /dev/null +++ b/test/js/parser/diagnostics/import_meta_context_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ImportMetaContextTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS script import.meta context diagnostics" do + assert {:error, %AST.Program{body: [%AST.VariableDeclaration{}]}, errors} = + Parser.parse("let url = import.meta.url;") + + assert Enum.any?(errors, &(&1.message == "import.meta only allowed in modules")) + end + + test "ports QuickJS function import.meta context diagnostics in scripts" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse("function f() { return import.meta.url; }") + + assert Enum.any?(errors, &(&1.message == "import.meta only allowed in modules")) + end +end diff --git a/test/js/parser/diagnostics/import_missing_from_test.exs b/test/js/parser/diagnostics/import_missing_from_test.exs new file mode 100644 index 000000000..d01771dcb --- /dev/null +++ b/test/js/parser/diagnostics/import_missing_from_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ImportMissingFromTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS import missing from diagnostics" do + for source <- [ + ~S(import value "dep";), + ~S(import { value } "dep";), + ~S(import * as ns "dep";) + ] do + assert {:error, %AST.Program{source_type: :module}, errors} = + Parser.parse(source, source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected from")) + end + end +end diff --git a/test/js/parser/diagnostics/import_source_error_test.exs b/test/js/parser/diagnostics/import_source_error_test.exs new file mode 100644 index 000000000..8c2b93831 --- /dev/null +++ b/test/js/parser/diagnostics/import_source_error_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ImportSourceErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS import source diagnostics" do + for source <- [ + ~S(import value from dep;), + ~S(import { value } from dep;), + ~S(import * as ns from dep;) + ] do + assert {:error, %AST.Program{source_type: :module}, errors} = + Parser.parse(source, source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected module source")) + end + end +end diff --git a/test/js/parser/diagnostics/import_trailing_comma_error_test.exs b/test/js/parser/diagnostics/import_trailing_comma_error_test.exs new file mode 100644 index 000000000..458984bef --- /dev/null +++ b/test/js/parser/diagnostics/import_trailing_comma_error_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ImportTrailingCommaErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS default import trailing comma diagnostics" do + assert {:error, %AST.Program{source_type: :module}, errors} = + Parser.parse(~S(import defaultValue, from "dep";), source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected import specifier")) + end +end diff --git a/test/js/parser/diagnostics/invalid_assignment_target_test.exs b/test/js/parser/diagnostics/invalid_assignment_target_test.exs new file mode 100644 index 000000000..887195d67 --- /dev/null +++ b/test/js/parser/diagnostics/invalid_assignment_target_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.InvalidAssignmentTargetTest do + use ExUnit.Case, async: true + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects binary expression assignment targets" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("(a + b) = value;") + + assert Enum.any?(errors, &(&1.message == "invalid assignment target")) + end + + test "accepts Annex B call expression assignment targets" do + assert {:ok, %AST.Program{body: [%AST.ExpressionStatement{}]}} = + Parser.parse("call() = value;") + end + + test "accepts Annex B call expression update targets" do + assert {:ok, %AST.Program{body: [%AST.ExpressionStatement{}]}} = Parser.parse("call()++;") + end +end diff --git a/test/js/parser/diagnostics/invalid_exponent_test.exs b/test/js/parser/diagnostics/invalid_exponent_test.exs new file mode 100644 index 000000000..ea0cf213d --- /dev/null +++ b/test/js/parser/diagnostics/invalid_exponent_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.InvalidExponentTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS invalid numeric exponent diagnostics" do + for source <- ["value = 1e;", "value = 1e+;", "value = 1e-;", "value = 1e_1;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid number literal")) + end + end +end diff --git a/test/js/parser/diagnostics/invalid_prefixed_digit_test.exs b/test/js/parser/diagnostics/invalid_prefixed_digit_test.exs new file mode 100644 index 000000000..a4140fa21 --- /dev/null +++ b/test/js/parser/diagnostics/invalid_prefixed_digit_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.InvalidPrefixedDigitTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS invalid prefixed numeric digit diagnostics" do + for source <- ["value = 0b2;", "value = 0o8;", "value = 0xg;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid number literal")) + end + end +end diff --git a/test/js/parser/diagnostics/invalid_string_escape_test.exs b/test/js/parser/diagnostics/invalid_string_escape_test.exs new file mode 100644 index 000000000..ffb54c884 --- /dev/null +++ b/test/js/parser/diagnostics/invalid_string_escape_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.InvalidStringEscapeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS invalid string escape diagnostics" do + for source <- [~s|"\\xZZ";|, ~s|"\\u00ZZ";|, ~s|"\\u{110000}";|] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid string escape")) + end + end +end diff --git a/test/js/parser/diagnostics/invalid_unicode_escape_test.exs b/test/js/parser/diagnostics/invalid_unicode_escape_test.exs new file mode 100644 index 000000000..6086167e0 --- /dev/null +++ b/test/js/parser/diagnostics/invalid_unicode_escape_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.InvalidUnicodeEscapeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS invalid unicode escape identifier diagnostics" do + for source <- ["var bad\\u{110000} = 1;", "var bad\\u{D800} = 1;", "var bad\\u00ZZ = 1;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid unicode escape in identifier")) + end + end +end diff --git a/test/js/parser/diagnostics/keyword_assignment_target_test.exs b/test/js/parser/diagnostics/keyword_assignment_target_test.exs new file mode 100644 index 000000000..22da186dd --- /dev/null +++ b/test/js/parser/diagnostics/keyword_assignment_target_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.KeywordAssignmentTargetTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS this and super assignment target diagnostics" do + for source <- ["this = 1;", "class C extends B { method() { super = value; } }"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid assignment target")) + end + end + + test "preserves this and super member assignment targets" do + for source <- ["this.value = 1;", "class C extends B { method() { super.value = 1; } }"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/diagnostics/labeled_break_continue_context_test.exs b/test/js/parser/diagnostics/labeled_break_continue_context_test.exs new file mode 100644 index 000000000..92223662f --- /dev/null +++ b/test/js/parser/diagnostics/labeled_break_continue_context_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.LabeledBreakContinueContextTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS undefined break label diagnostics" do + assert {:error, %AST.Program{body: [%AST.BreakStatement{}]}, errors} = + Parser.parse("break missing;") + + assert Enum.any?(errors, &(&1.message == "undefined break label")) + end + + test "ports QuickJS continue to non-iteration label diagnostics" do + source = "label: { continue label; }" + + assert {:error, %AST.Program{body: [%AST.LabeledStatement{}]}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "undefined or non-iteration continue label")) + end + + test "ports QuickJS continue to iteration label allowance" do + source = "loop: while (value) { continue loop; }" + + assert {:ok, %AST.Program{body: [%AST.LabeledStatement{}]}} = Parser.parse(source) + end +end diff --git a/test/js/parser/diagnostics/let_line_terminator_await_test.exs b/test/js/parser/diagnostics/let_line_terminator_await_test.exs new file mode 100644 index 000000000..134d2ad8d --- /dev/null +++ b/test/js/parser/diagnostics/let_line_terminator_await_test.exs @@ -0,0 +1,11 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.LetLineTerminatorAwaitTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "keeps let followed by await across a line terminator as a lexical declaration in async functions" do + assert {:error, %AST.Program{}, errors} = Parser.parse("async function f() { let\nawait 0; }") + assert errors != [] + end +end diff --git a/test/js/parser/diagnostics/let_line_terminator_binding_test.exs b/test/js/parser/diagnostics/let_line_terminator_binding_test.exs new file mode 100644 index 000000000..f4c9198fb --- /dev/null +++ b/test/js/parser/diagnostics/let_line_terminator_binding_test.exs @@ -0,0 +1,12 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.LetLineTerminatorBindingTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "keeps let followed by let or yield across a line terminator as lexical declarations" do + for source <- ["let\nlet = 1;", "function *f() { let\nyield 0; }"] do + assert {:error, %AST.Program{}, [_ | _]} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/diagnostics/lexical_let_binding_test.exs b/test/js/parser/diagnostics/lexical_let_binding_test.exs new file mode 100644 index 000000000..ec33ba9fb --- /dev/null +++ b/test/js/parser/diagnostics/lexical_let_binding_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.LexicalLetBindingTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects lexical declarations binding let" do + for source <- [ + "let let = 1;", + "const\nlet = 1;", + "const { let } = value;", + "for (let let in obj) {}", + "for (const let of obj) {}" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "lexical declaration cannot bind let")) + end + end +end diff --git a/test/js/parser/diagnostics/lexical_var_conflict_test.exs b/test/js/parser/diagnostics/lexical_var_conflict_test.exs new file mode 100644 index 000000000..2acca4f73 --- /dev/null +++ b/test/js/parser/diagnostics/lexical_var_conflict_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.LexicalVarConflictTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS lexical declaration conflict with var diagnostics" do + assert {:error, %AST.Program{body: [%AST.VariableDeclaration{}, %AST.VariableDeclaration{}]}, + errors} = + Parser.parse("var value; let value;") + + assert Enum.any?( + errors, + &(&1.message == "lexical declaration conflicts with var declaration") + ) + end + + test "ports QuickJS lexical declaration conflict with function diagnostics" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}, %AST.VariableDeclaration{}]}, + errors} = + Parser.parse("function value() {} const value = 1;") + + assert Enum.any?( + errors, + &(&1.message == "lexical declaration conflicts with var declaration") + ) + end +end diff --git a/test/js/parser/diagnostics/missing_prefixed_digits_test.exs b/test/js/parser/diagnostics/missing_prefixed_digits_test.exs new file mode 100644 index 000000000..25bc2b071 --- /dev/null +++ b/test/js/parser/diagnostics/missing_prefixed_digits_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.MissingPrefixedDigitsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS missing prefixed numeric literal diagnostics" do + for source <- ["value = 0x;", "value = 0b;", "value = 0o;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid number literal")) + end + end +end diff --git a/test/js/parser/diagnostics/module_async_generator_parameter_test.exs b/test/js/parser/diagnostics/module_async_generator_parameter_test.exs new file mode 100644 index 000000000..1115821dc --- /dev/null +++ b/test/js/parser/diagnostics/module_async_generator_parameter_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleAsyncGeneratorParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module async generator await parameter diagnostics" do + assert {:error, + %AST.Program{ + source_type: :module, + body: [%AST.FunctionDeclaration{async: true, generator: true}] + }, errors} = + Parser.parse("async function *g(await) {}", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end + + test "ports QuickJS module async generator yield parameter diagnostics" do + assert {:error, + %AST.Program{ + source_type: :module, + body: [%AST.FunctionDeclaration{async: true, generator: true}] + }, errors} = + Parser.parse("async function *g({ yield }) {}", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end +end diff --git a/test/js/parser/diagnostics/module_await_arrow_parameter_test.exs b/test/js/parser/diagnostics/module_await_arrow_parameter_test.exs new file mode 100644 index 000000000..6f6cde62b --- /dev/null +++ b/test/js/parser/diagnostics/module_await_arrow_parameter_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleAwaitArrowParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module await arrow parameter diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.ExpressionStatement{}]}, + errors} = + Parser.parse("fn = (await) => await;", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end +end diff --git a/test/js/parser/diagnostics/module_await_binding_test.exs b/test/js/parser/diagnostics/module_await_binding_test.exs new file mode 100644 index 000000000..f9bca6530 --- /dev/null +++ b/test/js/parser/diagnostics/module_await_binding_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleAwaitBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module await binding name diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.VariableDeclaration{}]}, + errors} = + Parser.parse("var await;", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end +end diff --git a/test/js/parser/diagnostics/module_await_catch_parameter_test.exs b/test/js/parser/diagnostics/module_await_catch_parameter_test.exs new file mode 100644 index 000000000..ec7144b09 --- /dev/null +++ b/test/js/parser/diagnostics/module_await_catch_parameter_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleAwaitCatchParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module await catch parameter diagnostics" do + source = "try { work(); } catch (await) { recover(); }" + + assert {:error, %AST.Program{source_type: :module, body: [%AST.TryStatement{}]}, errors} = + Parser.parse(source, source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end +end diff --git a/test/js/parser/diagnostics/module_await_class_method_parameter_test.exs b/test/js/parser/diagnostics/module_await_class_method_parameter_test.exs new file mode 100644 index 000000000..fc5ee7f2c --- /dev/null +++ b/test/js/parser/diagnostics/module_await_class_method_parameter_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleAwaitClassMethodParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module await class method parameter diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C { method(await) {} }", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end +end diff --git a/test/js/parser/diagnostics/module_await_class_name_test.exs b/test/js/parser/diagnostics/module_await_class_name_test.exs new file mode 100644 index 000000000..1e42adbc0 --- /dev/null +++ b/test/js/parser/diagnostics/module_await_class_name_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleAwaitClassNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module await class name diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class await {}", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end +end diff --git a/test/js/parser/diagnostics/module_await_function_name_test.exs b/test/js/parser/diagnostics/module_await_function_name_test.exs new file mode 100644 index 000000000..725c89e85 --- /dev/null +++ b/test/js/parser/diagnostics/module_await_function_name_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleAwaitFunctionNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module await function name diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.FunctionDeclaration{}]}, + errors} = + Parser.parse("function await() {}", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end +end diff --git a/test/js/parser/diagnostics/module_await_parameter_test.exs b/test/js/parser/diagnostics/module_await_parameter_test.exs new file mode 100644 index 000000000..b12068fc1 --- /dev/null +++ b/test/js/parser/diagnostics/module_await_parameter_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleAwaitParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module await function parameter diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.FunctionDeclaration{}]}, + errors} = + Parser.parse("function f(await) {}", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end +end diff --git a/test/js/parser/diagnostics/module_class_name_test.exs b/test/js/parser/diagnostics/module_class_name_test.exs new file mode 100644 index 000000000..19aced255 --- /dev/null +++ b/test/js/parser/diagnostics/module_class_name_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleClassNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module class arguments binding name diagnostics" do + assert {:error, + %AST.Program{ + source_type: :module, + body: [%AST.ClassDeclaration{id: %AST.Identifier{name: "arguments"}}] + }, errors} = + Parser.parse("class arguments {}", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/module_declaration_source_type_test.exs b/test/js/parser/diagnostics/module_declaration_source_type_test.exs new file mode 100644 index 000000000..d0d27909d --- /dev/null +++ b/test/js/parser/diagnostics/module_declaration_source_type_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleDeclarationSourceTypeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS import declaration script source diagnostics" do + assert {:error, %AST.Program{source_type: :script, body: [%AST.ImportDeclaration{}]}, errors} = + Parser.parse(~S|import value from "dep";|) + + assert Enum.any?( + errors, + &(&1.message == "import/export declarations only allowed in modules") + ) + end + + test "ports QuickJS export declaration script source diagnostics" do + assert {:error, %AST.Program{source_type: :script, body: [%AST.ExportNamedDeclaration{}]}, + errors} = + Parser.parse("export var value = 1;") + + assert Enum.any?( + errors, + &(&1.message == "import/export declarations only allowed in modules") + ) + end +end diff --git a/test/js/parser/diagnostics/module_delete_identifier_test.exs b/test/js/parser/diagnostics/module_delete_identifier_test.exs new file mode 100644 index 000000000..7977a933f --- /dev/null +++ b/test/js/parser/diagnostics/module_delete_identifier_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleDeleteIdentifierTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module delete identifier strict diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.ExpressionStatement{}]}, + errors} = + Parser.parse("delete value;", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "delete of identifier not allowed in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/module_destructuring_assignment_target_test.exs b/test/js/parser/diagnostics/module_destructuring_assignment_target_test.exs new file mode 100644 index 000000000..d6f1eb17f --- /dev/null +++ b/test/js/parser/diagnostics/module_destructuring_assignment_target_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleDestructuringAssignmentTargetTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module destructuring eval assignment diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.ExpressionStatement{}]}, + errors} = + Parser.parse("({ eval } = object);", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "restricted assignment target in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/module_destructuring_binding_name_test.exs b/test/js/parser/diagnostics/module_destructuring_binding_name_test.exs new file mode 100644 index 000000000..1681f6f27 --- /dev/null +++ b/test/js/parser/diagnostics/module_destructuring_binding_name_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleDestructuringBindingNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module object destructuring eval binding diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.VariableDeclaration{}]}, + errors} = + Parser.parse("var { eval } = object;", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/module_escaped_restricted_binding_test.exs b/test/js/parser/diagnostics/module_escaped_restricted_binding_test.exs new file mode 100644 index 000000000..d3a70b2bb --- /dev/null +++ b/test/js/parser/diagnostics/module_escaped_restricted_binding_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleEscapedRestrictedBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module escaped await binding diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.VariableDeclaration{}]}, + errors} = + Parser.parse(~S|var aw\u0061it;|, source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end + + test "ports QuickJS module escaped eval binding diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.VariableDeclaration{}]}, + errors} = + Parser.parse(~S|var ev\u0061l;|, source_type: :module) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/module_legacy_octal_literal_test.exs b/test/js/parser/diagnostics/module_legacy_octal_literal_test.exs new file mode 100644 index 000000000..a088b75d1 --- /dev/null +++ b/test/js/parser/diagnostics/module_legacy_octal_literal_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleLegacyOctalLiteralTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module legacy octal literal diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.ExpressionStatement{}]}, + errors} = + Parser.parse("value = 010;", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "legacy octal literal not allowed in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/module_nested_strict_binding_test.exs b/test/js/parser/diagnostics/module_nested_strict_binding_test.exs new file mode 100644 index 000000000..8376581f1 --- /dev/null +++ b/test/js/parser/diagnostics/module_nested_strict_binding_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleNestedStrictBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module nested eval binding strict diagnostics" do + source = "if (enabled) { let eval = value; }" + + assert {:error, %AST.Program{source_type: :module, body: [%AST.IfStatement{}]}, errors} = + Parser.parse(source, source_type: :module) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/module_octal_escape_test.exs b/test/js/parser/diagnostics/module_octal_escape_test.exs new file mode 100644 index 000000000..37aff23a0 --- /dev/null +++ b/test/js/parser/diagnostics/module_octal_escape_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleOctalEscapeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module octal string escape diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.ExpressionStatement{}]}, + errors} = + Parser.parse(~S|value = "\1";|, source_type: :module) + + assert Enum.any?(errors, &(&1.message == "octal escape sequence not allowed in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/module_restricted_update_test.exs b/test/js/parser/diagnostics/module_restricted_update_test.exs new file mode 100644 index 000000000..e3f83ff40 --- /dev/null +++ b/test/js/parser/diagnostics/module_restricted_update_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleRestrictedUpdateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module eval update target diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.ExpressionStatement{}]}, + errors} = + Parser.parse("eval++;", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "restricted assignment target in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/module_strict_binding_test.exs b/test/js/parser/diagnostics/module_strict_binding_test.exs new file mode 100644 index 000000000..6a56fceee --- /dev/null +++ b/test/js/parser/diagnostics/module_strict_binding_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleStrictBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module eval binding strict diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.VariableDeclaration{}]}, + errors} = + Parser.parse("var eval;", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end + + test "ports QuickJS module arguments function binding strict diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.FunctionDeclaration{}]}, + errors} = + Parser.parse("function arguments() {}", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/module_with_statement_test.exs b/test/js/parser/diagnostics/module_with_statement_test.exs new file mode 100644 index 000000000..59e6d4c2d --- /dev/null +++ b/test/js/parser/diagnostics/module_with_statement_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ModuleWithStatementTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module with-statement strict diagnostics" do + assert {:error, %AST.Program{source_type: :module, body: [%AST.WithStatement{}]}, errors} = + Parser.parse("with (object) { value; }", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "with statement not allowed in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/namespace_export_source_error_test.exs b/test/js/parser/diagnostics/namespace_export_source_error_test.exs new file mode 100644 index 000000000..9877990e3 --- /dev/null +++ b/test/js/parser/diagnostics/namespace_export_source_error_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.NamespaceExportSourceErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS namespace export source diagnostics" do + for source <- [~S(export * as ns;), ~S(export * as "external-name";)] do + assert {:error, %AST.Program{source_type: :module}, errors} = + Parser.parse(source, source_type: :module) + + assert Enum.any?(errors, &(&1.message == "expected from")) + end + end +end diff --git a/test/js/parser/diagnostics/new_optional_chain_test.exs b/test/js/parser/diagnostics/new_optional_chain_test.exs new file mode 100644 index 000000000..4e5b4b28e --- /dev/null +++ b/test/js/parser/diagnostics/new_optional_chain_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.NewOptionalChainTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS new optional member chain diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("value = new object?.Ctor();") + + assert Enum.any?(errors, &(&1.message == "optional chain not allowed after new")) + end + + test "ports QuickJS new optional computed chain diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("value = new object?.[Ctor]();") + + assert Enum.any?(errors, &(&1.message == "optional chain not allowed after new")) + end +end diff --git a/test/js/parser/diagnostics/new_target_arrow_context_test.exs b/test/js/parser/diagnostics/new_target_arrow_context_test.exs new file mode 100644 index 000000000..deaadd66d --- /dev/null +++ b/test/js/parser/diagnostics/new_target_arrow_context_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.NewTargetArrowContextTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects new.target inside arrows in global code" do + for source <- ["() => { new.target; };", "() => new.target;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "new.target not allowed outside function")) + end + end + + test "allows new.target inside normal functions" do + assert {:ok, %AST.Program{}} = Parser.parse("function f() { new.target; }") + end +end diff --git a/test/js/parser/diagnostics/new_target_context_test.exs b/test/js/parser/diagnostics/new_target_context_test.exs new file mode 100644 index 000000000..086bb617f --- /dev/null +++ b/test/js/parser/diagnostics/new_target_context_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.NewTargetContextTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS top-level new.target diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("new.target;") + + assert Enum.any?(errors, &(&1.message == "new.target not allowed outside function")) + end + + test "ports QuickJS new.target declaration initializer diagnostics" do + assert {:error, %AST.Program{body: [%AST.VariableDeclaration{}]}, errors} = + Parser.parse("let value = new.target;") + + assert Enum.any?(errors, &(&1.message == "new.target not allowed outside function")) + end +end diff --git a/test/js/parser/diagnostics/non_simple_duplicate_parameter_test.exs b/test/js/parser/diagnostics/non_simple_duplicate_parameter_test.exs new file mode 100644 index 000000000..23b4eff7a --- /dev/null +++ b/test/js/parser/diagnostics/non_simple_duplicate_parameter_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.NonSimpleDuplicateParameterTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects duplicate names with default parameters" do + for source <- [ + "value = async function (a, a = 1) {};", + "value = async function *(a, a = 1) {};" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end + end + + test "preserves duplicate simple sloppy function params" do + assert {:ok, %AST.Program{}} = Parser.parse("value = function (a, a) {};") + end +end diff --git a/test/js/parser/diagnostics/numeric_separator_error_test.exs b/test/js/parser/diagnostics/numeric_separator_error_test.exs new file mode 100644 index 000000000..dbfecd1d3 --- /dev/null +++ b/test/js/parser/diagnostics/numeric_separator_error_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.NumericSeparatorErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS numeric separator diagnostics" do + for source <- ["value = 1__0;", "value = 1_;", "value = 0x_F;", "value = 0b_1;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid numeric separator")) + end + end +end diff --git a/test/js/parser/diagnostics/object_pattern_reserved_shorthand_test.exs b/test/js/parser/diagnostics/object_pattern_reserved_shorthand_test.exs new file mode 100644 index 000000000..e47d1710b --- /dev/null +++ b/test/js/parser/diagnostics/object_pattern_reserved_shorthand_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ObjectPatternReservedShorthandTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS reserved shorthand object pattern diagnostics" do + for source <- [~S|var x = ({ bre\u0061k }) => {};|, ~S|var x = ({ default }) => {};|] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "expected binding identifier")) + end + end + + test "preserves reserved property names with explicit binding values" do + assert {:ok, %AST.Program{}} = Parser.parse(~S|var x = ({ default: value }) => value;|) + end +end diff --git a/test/js/parser/diagnostics/object_rest_not_last_test.exs b/test/js/parser/diagnostics/object_rest_not_last_test.exs new file mode 100644 index 000000000..860b34fd9 --- /dev/null +++ b/test/js/parser/diagnostics/object_rest_not_last_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ObjectRestNotLastTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS object rest binding must be last diagnostics" do + source = "var { ...rest, after } = object;" + + assert {:error, + %AST.Program{ + body: [ + %AST.VariableDeclaration{declarations: [%AST.VariableDeclarator{id: pattern}]} + ] + }, errors} = + Parser.parse(source) + + assert %AST.ObjectPattern{ + properties: [ + %AST.RestElement{argument: %AST.Identifier{name: "rest"}}, + %AST.Property{key: %AST.Identifier{name: "after"}} + ] + } = pattern + + assert Enum.any?(errors, &(&1.message == "rest element must be last")) + end +end diff --git a/test/js/parser/diagnostics/object_shorthand_test.exs b/test/js/parser/diagnostics/object_shorthand_test.exs new file mode 100644 index 000000000..257a2b335 --- /dev/null +++ b/test/js/parser/diagnostics/object_shorthand_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ObjectShorthandTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects computed property shorthand" do + assert {:error, %AST.Program{}, errors} = Parser.parse("({[x]});") + assert Enum.any?(errors, &(&1.message == "invalid object shorthand")) + end + + test "rejects restricted object shorthand in strict code" do + for source <- [~S|"use strict"; ({ let });|, ~S|function f() { "use strict"; ({ public }); }|] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid object shorthand")) + end + end + + test "rejects await object shorthand in await context" do + assert {:error, %AST.Program{}, errors} = Parser.parse("class C { static { ({ await }); } }") + assert Enum.any?(errors, &(&1.message == "invalid object shorthand")) + end +end diff --git a/test/js/parser/diagnostics/optional_call_assignment_target_test.exs b/test/js/parser/diagnostics/optional_call_assignment_target_test.exs new file mode 100644 index 000000000..9681e63b1 --- /dev/null +++ b/test/js/parser/diagnostics/optional_call_assignment_target_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.OptionalCallAssignmentTargetTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS optional call assignment target diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("object?.method() = value;") + + assert Enum.any?(errors, &(&1.message == "optional chain is not a valid assignment target")) + end + + test "ports QuickJS optional call update target diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("object?.method()++;") + + assert Enum.any?(errors, &(&1.message == "optional chain is not a valid assignment target")) + end +end diff --git a/test/js/parser/diagnostics/optional_chain_assignment_target_test.exs b/test/js/parser/diagnostics/optional_chain_assignment_target_test.exs new file mode 100644 index 000000000..2a7915523 --- /dev/null +++ b/test/js/parser/diagnostics/optional_chain_assignment_target_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.OptionalChainAssignmentTargetTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS optional chain assignment target diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("object?.property = value;") + + assert Enum.any?(errors, &(&1.message == "optional chain is not a valid assignment target")) + end + + test "ports QuickJS optional chain update target diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("object?.property++;") + + assert Enum.any?(errors, &(&1.message == "optional chain is not a valid assignment target")) + end +end diff --git a/test/js/parser/diagnostics/optional_chain_destructuring_target_test.exs b/test/js/parser/diagnostics/optional_chain_destructuring_target_test.exs new file mode 100644 index 000000000..12ea20d24 --- /dev/null +++ b/test/js/parser/diagnostics/optional_chain_destructuring_target_test.exs @@ -0,0 +1,25 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.OptionalChainDestructuringTargetTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS optional chain object assignment pattern diagnostics" do + source = "({ target: object?.property } = source);" + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "optional chain is not a valid assignment target")) + end + + test "ports QuickJS optional chain array assignment pattern diagnostics" do + source = "[object?.property] = source;" + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "optional chain is not a valid assignment target")) + end +end diff --git a/test/js/parser/diagnostics/optional_chain_tagged_template_test.exs b/test/js/parser/diagnostics/optional_chain_tagged_template_test.exs new file mode 100644 index 000000000..266e5cb36 --- /dev/null +++ b/test/js/parser/diagnostics/optional_chain_tagged_template_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.OptionalChainTaggedTemplateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS optional chain tagged template diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("tag?.method`template`;") + + assert Enum.any?( + errors, + &(&1.message == "optional chain not allowed as tagged template callee") + ) + end + + test "ports QuickJS regular tagged template allowance" do + assert {:ok, + %AST.Program{ + body: [%AST.ExpressionStatement{expression: %AST.TaggedTemplateExpression{}}] + }} = Parser.parse("tag`template`;") + end +end diff --git a/test/js/parser/diagnostics/parenthesized_arrow_line_terminator_test.exs b/test/js/parser/diagnostics/parenthesized_arrow_line_terminator_test.exs new file mode 100644 index 000000000..22e6550c1 --- /dev/null +++ b/test/js/parser/diagnostics/parenthesized_arrow_line_terminator_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ParenthesizedArrowLineTerminatorTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects line terminator before parenthesized arrow" do + assert {:error, %AST.Program{}, _errors} = Parser.parse("var af = ()\n=> {};") + end + + test "preserves same-line parenthesized arrow" do + assert {:ok, %AST.Program{}} = Parser.parse("var af = () => {};") + end +end diff --git a/test/js/parser/diagnostics/parenthesized_object_assignment_target_test.exs b/test/js/parser/diagnostics/parenthesized_object_assignment_target_test.exs new file mode 100644 index 000000000..3c5352446 --- /dev/null +++ b/test/js/parser/diagnostics/parenthesized_object_assignment_target_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ParenthesizedObjectAssignmentTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects parenthesized object literal as a direct assignment target" do + assert {:error, %AST.Program{}, errors} = Parser.parse("({}) = 1;") + assert Enum.any?(errors, &(&1.message == "invalid assignment target")) + end + + test "preserves parenthesized object destructuring assignment" do + assert {:ok, %AST.Program{}} = Parser.parse("({} = value);") + end +end diff --git a/test/js/parser/diagnostics/private_in_assignment_target_test.exs b/test/js/parser/diagnostics/private_in_assignment_target_test.exs new file mode 100644 index 000000000..48da84216 --- /dev/null +++ b/test/js/parser/diagnostics/private_in_assignment_target_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.PrivateInAssignmentTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows private-in expressions as assignment targets for QuickJS parity" do + source = "class C { #field; constructor() { #field in {} = 0; } }" + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + + test "rejects yield as private-in right-hand side" do + source = "class C { #field; static method() { #field in yield; } }" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid private in expression")) + end + + test "rejects yield references in strict in-expression right-hand sides" do + assert {:error, %AST.Program{}, errors} = Parser.parse(~S|"use strict"; '' in (yield);|) + assert errors != [] + end +end diff --git a/test/js/parser/diagnostics/private_name_outside_class_test.exs b/test/js/parser/diagnostics/private_name_outside_class_test.exs new file mode 100644 index 000000000..820b48247 --- /dev/null +++ b/test/js/parser/diagnostics/private_name_outside_class_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.PrivateNameOutsideClassTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS private member outside class diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("object.#missing;") + + assert Enum.any?(errors, &(&1.message == "undeclared private name")) + end + + test "ports QuickJS private in-expression outside class diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("#missing in object;") + + assert Enum.any?(errors, &(&1.message == "undeclared private name")) + end +end diff --git a/test/js/parser/diagnostics/reserved_identifier_edges_test.exs b/test/js/parser/diagnostics/reserved_identifier_edges_test.exs new file mode 100644 index 000000000..f343ab3e3 --- /dev/null +++ b/test/js/parser/diagnostics/reserved_identifier_edges_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ReservedIdentifierEdgesTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects enum bindings" do + for source <- ["var enum = 1;", "var \\u{65}num = 1;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message in ["expected binding identifier", "escaped reserved word"]) + ) + end + end + + test "rejects vertical tilde as identifier start" do + for source <- ["var ⸯ;", "var \\u2E2F;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert errors != [] + end + end + + test "rejects escaped reserved literal words" do + for source <- ["tru\\u{65};", "fals\\u{65};", "n\\u{75}ll;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "escaped reserved word")) + end + end + + test "rejects reserved shorthand this" do + assert {:error, %AST.Program{}, errors} = Parser.parse("({this});") + assert Enum.any?(errors, &(&1.message == "invalid object initializer")) + end +end diff --git a/test/js/parser/diagnostics/reserved_names_test.exs b/test/js/parser/diagnostics/reserved_names_test.exs new file mode 100644 index 000000000..02fa808fe --- /dev/null +++ b/test/js/parser/diagnostics/reserved_names_test.exs @@ -0,0 +1,33 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ReservedNamesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS sloppy future reserved binding names" do + for name <- ~w[let static] do + assert {:ok, %AST.Program{body: [%AST.VariableDeclaration{}]}} = + Parser.parse("var #{name};") + end + end + + test "ports QuickJS strict future reserved binding name diagnostics" do + for name <- ~w[let static] do + assert {:error, %AST.Program{}, errors} = Parser.parse(~s|"use strict"; var #{name};|) + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end + end + + test "ports QuickJS await contextual binding name allowance" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [%AST.VariableDeclarator{id: %AST.Identifier{name: "await"}}] + } + ] + }} = + Parser.parse("var await;") + end +end diff --git a/test/js/parser/diagnostics/reserved_object_shorthand_test.exs b/test/js/parser/diagnostics/reserved_object_shorthand_test.exs new file mode 100644 index 000000000..0c5e3f080 --- /dev/null +++ b/test/js/parser/diagnostics/reserved_object_shorthand_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ReservedObjectShorthandTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects reserved literal object shorthand names" do + for source <- ["({ true });", "({ false });", "({ null });"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid object initializer")) + end + end +end diff --git a/test/js/parser/diagnostics/rest_initializer_test.exs b/test/js/parser/diagnostics/rest_initializer_test.exs new file mode 100644 index 000000000..09582abe4 --- /dev/null +++ b/test/js/parser/diagnostics/rest_initializer_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.RestInitializerTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS array rest initializer diagnostics" do + assert {:error, %AST.Program{body: [%AST.VariableDeclaration{} | _]}, errors} = + Parser.parse("var [...rest = value] = array;") + + assert Enum.any?(errors, &(&1.message == "rest element cannot have initializer")) + end + + test "ports QuickJS object rest initializer diagnostics" do + assert {:error, %AST.Program{body: [%AST.VariableDeclaration{}]}, errors} = + Parser.parse("var { ...rest = value } = object;") + + assert Enum.any?(errors, &(&1.message == "rest element cannot have initializer")) + end + + test "ports QuickJS rest parameter initializer diagnostics" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse("function f(...rest = value) {}") + + assert Enum.any?(errors, &(&1.message == "rest element cannot have initializer")) + end +end diff --git a/test/js/parser/diagnostics/rest_parameter_error_test.exs b/test/js/parser/diagnostics/rest_parameter_error_test.exs new file mode 100644 index 000000000..b2ddc350c --- /dev/null +++ b/test/js/parser/diagnostics/rest_parameter_error_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.RestParameterErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS rest parameter position diagnostics" do + for source <- ["function f(...rest, extra) {}", "(...rest, extra) => rest;"] do + assert {:error, %AST.Program{}, [_ | _]} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/diagnostics/rest_parameter_trailing_comma_error_test.exs b/test/js/parser/diagnostics/rest_parameter_trailing_comma_error_test.exs new file mode 100644 index 000000000..4279568c0 --- /dev/null +++ b/test/js/parser/diagnostics/rest_parameter_trailing_comma_error_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.RestParameterTrailingCommaErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS rest parameter trailing comma diagnostics" do + for source <- ["function f(...rest,) {}", "(...rest,) => rest;"] do + assert {:error, %AST.Program{}, [_ | _]} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/diagnostics/restricted_global_lexical_test.exs b/test/js/parser/diagnostics/restricted_global_lexical_test.exs new file mode 100644 index 000000000..66909cd19 --- /dev/null +++ b/test/js/parser/diagnostics/restricted_global_lexical_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.RestrictedGlobalLexicalTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects global lexical undefined in scripts" do + for source <- ["let undefined;", "const undefined = 1;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted global lexical binding")) + end + end +end diff --git a/test/js/parser/diagnostics/semicolon_insertion_test.exs b/test/js/parser/diagnostics/semicolon_insertion_test.exs new file mode 100644 index 000000000..fb0bef5e0 --- /dev/null +++ b/test/js/parser/diagnostics/semicolon_insertion_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.SemicolonInsertionTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS missing semicolon diagnostics between expressions" do + for source <- ["{ 1 2 } 3", "{1 2} 3"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "expected ;")) + end + end + + test "ports QuickJS missing semicolon diagnostics before else" do + assert {:error, %AST.Program{}, errors} = Parser.parse("if (false) x = 1 else x = -1") + assert Enum.any?(errors, &(&1.message == "expected ;")) + end +end diff --git a/test/js/parser/diagnostics/sloppy_future_reserved_binding_test.exs b/test/js/parser/diagnostics/sloppy_future_reserved_binding_test.exs new file mode 100644 index 000000000..0e878f11d --- /dev/null +++ b/test/js/parser/diagnostics/sloppy_future_reserved_binding_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.SloppyFutureReservedBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports Test262 sloppy let and static var bindings" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [%AST.VariableDeclarator{id: %AST.Identifier{name: "let"}}] + }, + %AST.VariableDeclaration{ + declarations: [%AST.VariableDeclarator{id: %AST.Identifier{name: "static"}}] + } + ] + }} = Parser.parse("var let = 1; var static = 2;") + end +end diff --git a/test/js/parser/diagnostics/strict_arrow_body_binding_test.exs b/test/js/parser/diagnostics/strict_arrow_body_binding_test.exs new file mode 100644 index 000000000..f630892c8 --- /dev/null +++ b/test/js/parser/diagnostics/strict_arrow_body_binding_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictArrowBodyBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict arrow body binding diagnostics" do + source = ~S|fn = () => { "use strict"; var arguments; };| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_arrow_parameter_names_test.exs b/test/js/parser/diagnostics/strict_arrow_parameter_names_test.exs new file mode 100644 index 000000000..3a6370764 --- /dev/null +++ b/test/js/parser/diagnostics/strict_arrow_parameter_names_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictArrowParameterNamesTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects restricted arrow parameters in strict scripts" do + for source <- [ + ~S|"use strict"; value = eval => 1;|, + ~S|"use strict"; value = (arguments) => 1;| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end + end + + test "rejects yield arrow parameters in strict scripts" do + assert {:error, %AST.Program{}, errors} = Parser.parse(~S|"use strict"; value = yield => 1;|) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_arrow_parameter_test.exs b/test/js/parser/diagnostics/strict_arrow_parameter_test.exs new file mode 100644 index 000000000..dc044fa91 --- /dev/null +++ b/test/js/parser/diagnostics/strict_arrow_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictArrowParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict arrow parameter diagnostics" do + source = ~S|value = (a, a) => { "use strict"; return a; };| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_async_arrow_parameter_test.exs b/test/js/parser/diagnostics/strict_async_arrow_parameter_test.exs new file mode 100644 index 000000000..e9a266f2d --- /dev/null +++ b/test/js/parser/diagnostics/strict_async_arrow_parameter_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictAsyncArrowParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict async arrow parameter diagnostics" do + source = ~S|value = async (eval) => { "use strict"; return eval; };| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_async_class_method_parameter_test.exs b/test/js/parser/diagnostics/strict_async_class_method_parameter_test.exs new file mode 100644 index 000000000..02ecabe80 --- /dev/null +++ b/test/js/parser/diagnostics/strict_async_class_method_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictAsyncClassMethodParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict async class method parameter diagnostics" do + source = ~S|class C { async method(a, a) { "use strict"; return a; } }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_async_object_method_parameter_test.exs b/test/js/parser/diagnostics/strict_async_object_method_parameter_test.exs new file mode 100644 index 000000000..94daeea86 --- /dev/null +++ b/test/js/parser/diagnostics/strict_async_object_method_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictAsyncObjectMethodParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict async object method parameter diagnostics" do + source = ~S|object = { async method(a, a) { "use strict"; return a; } };| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_call_assignment_target_test.exs b/test/js/parser/diagnostics/strict_call_assignment_target_test.exs new file mode 100644 index 000000000..8806d6bcc --- /dev/null +++ b/test/js/parser/diagnostics/strict_call_assignment_target_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictCallAssignmentTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects call expressions as strict assignment and update targets" do + for source <- [ + ~S|"use strict"; f() = 1;|, + ~S|"use strict"; f() += 1;|, + ~S|"use strict"; f()++;|, + ~S|"use strict"; ++f();| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid assignment target")) + end + end + + test "rejects call expressions as strict for-in and for-of targets" do + for source <- [ + ~S|"use strict"; for (f() in object) {}|, + ~S|"use strict"; for (f() of object) {}| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid assignment target")) + end + end + + test "preserves sloppy Annex B call expression targets" do + for source <- ["f() = 1;", "f()++;", "for (f() in object) {}"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/diagnostics/strict_catch_binding_test.exs b/test/js/parser/diagnostics/strict_catch_binding_test.exs new file mode 100644 index 000000000..e98fa883b --- /dev/null +++ b/test/js/parser/diagnostics/strict_catch_binding_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictCatchBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict catch eval binding diagnostics" do + source = ~S|function f() { "use strict"; try { work(); } catch (eval) { recover(); } }| + + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_class_accessor_parameter_test.exs b/test/js/parser/diagnostics/strict_class_accessor_parameter_test.exs new file mode 100644 index 000000000..ec32a0917 --- /dev/null +++ b/test/js/parser/diagnostics/strict_class_accessor_parameter_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictClassAccessorParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict class accessor parameter diagnostics" do + source = ~S|class C { set value(arguments) { "use strict"; this.value = arguments; } }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_class_body_binding_test.exs b/test/js/parser/diagnostics/strict_class_body_binding_test.exs new file mode 100644 index 000000000..efc738b93 --- /dev/null +++ b/test/js/parser/diagnostics/strict_class_body_binding_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictClassBodyBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS class method strict body binding diagnostics" do + source = ~S|class C { method() { var eval; } }| + + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end + + test "ports QuickJS class static block strict binding diagnostics" do + source = ~S|class C { static { var arguments; } }| + + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_class_method_parameter_test.exs b/test/js/parser/diagnostics/strict_class_method_parameter_test.exs new file mode 100644 index 000000000..f9d9da5be --- /dev/null +++ b/test/js/parser/diagnostics/strict_class_method_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictClassMethodParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict class method parameter diagnostics" do + source = ~S|class C { method(a, a) { "use strict"; return a; } }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_class_name_test.exs b/test/js/parser/diagnostics/strict_class_name_test.exs new file mode 100644 index 000000000..401f5caf1 --- /dev/null +++ b/test/js/parser/diagnostics/strict_class_name_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictClassNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict class eval binding name diagnostics" do + source = ~S|"use strict"; class eval {}| + + assert {:error, + %AST.Program{ + body: [ + %AST.ExpressionStatement{}, + %AST.ClassDeclaration{id: %AST.Identifier{name: "eval"}} + ] + }, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_class_restricted_parameter_test.exs b/test/js/parser/diagnostics/strict_class_restricted_parameter_test.exs new file mode 100644 index 000000000..ce592741b --- /dev/null +++ b/test/js/parser/diagnostics/strict_class_restricted_parameter_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictClassRestrictedParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict class restricted parameter diagnostics" do + for source <- [ + ~S|class C { method(eval) { "use strict"; } }|, + ~S|class C { method(arguments) { "use strict"; } }| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end + end +end diff --git a/test/js/parser/diagnostics/strict_default_parameter_duplicate_test.exs b/test/js/parser/diagnostics/strict_default_parameter_duplicate_test.exs new file mode 100644 index 000000000..51ed027fd --- /dev/null +++ b/test/js/parser/diagnostics/strict_default_parameter_duplicate_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictDefaultParameterDuplicateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict default parameter duplicate diagnostics" do + source = ~S|function f(a = 1, a = 2) { "use strict"; return a; }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_delete_identifier_test.exs b/test/js/parser/diagnostics/strict_delete_identifier_test.exs new file mode 100644 index 000000000..38dfd2c16 --- /dev/null +++ b/test/js/parser/diagnostics/strict_delete_identifier_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictDeleteIdentifierTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict delete identifier diagnostics" do + source = ~S|"use strict"; delete value;| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.ExpressionStatement{}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "delete of identifier not allowed in strict mode")) + end + + test "ports QuickJS strict delete member allowance" do + source = ~S|"use strict"; delete object.value;| + + assert {:ok, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.ExpressionStatement{}]}} = + Parser.parse(source) + end +end diff --git a/test/js/parser/diagnostics/strict_destructured_duplicate_parameter_test.exs b/test/js/parser/diagnostics/strict_destructured_duplicate_parameter_test.exs new file mode 100644 index 000000000..d86bc57b9 --- /dev/null +++ b/test/js/parser/diagnostics/strict_destructured_duplicate_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictDestructuredDuplicateParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict destructured duplicate parameter diagnostics" do + source = ~S|function f({ a }, [a]) { "use strict"; }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_destructured_parameter_test.exs b/test/js/parser/diagnostics/strict_destructured_parameter_test.exs new file mode 100644 index 000000000..a20d82730 --- /dev/null +++ b/test/js/parser/diagnostics/strict_destructured_parameter_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictDestructuredParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict destructured parameter diagnostics" do + source = ~S|function f({ eval: renamed }, [arguments]) { "use strict"; }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_destructuring_assignment_target_test.exs b/test/js/parser/diagnostics/strict_destructuring_assignment_target_test.exs new file mode 100644 index 000000000..f0568b7e4 --- /dev/null +++ b/test/js/parser/diagnostics/strict_destructuring_assignment_target_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictDestructuringAssignmentTargetTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict object destructuring eval assignment diagnostics" do + source = ~S|"use strict"; ({ eval } = object);| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.ExpressionStatement{}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted assignment target in strict mode")) + end + + test "ports QuickJS strict array destructuring arguments assignment diagnostics" do + source = ~S|"use strict"; [arguments] = array;| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.ExpressionStatement{}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted assignment target in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_destructuring_binding_name_test.exs b/test/js/parser/diagnostics/strict_destructuring_binding_name_test.exs new file mode 100644 index 000000000..b3014c193 --- /dev/null +++ b/test/js/parser/diagnostics/strict_destructuring_binding_name_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictDestructuringBindingNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict object destructuring eval binding diagnostics" do + source = ~S|"use strict"; var { eval } = object;| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.VariableDeclaration{}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end + + test "ports QuickJS strict array destructuring arguments binding diagnostics" do + source = ~S|"use strict"; var [arguments] = array;| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.VariableDeclaration{}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_directive_prologue_test.exs b/test/js/parser/diagnostics/strict_directive_prologue_test.exs new file mode 100644 index 000000000..9002e4016 --- /dev/null +++ b/test/js/parser/diagnostics/strict_directive_prologue_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictDirectivePrologueTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict directive prologue diagnostics" do + source = ~S|function f(a, a) { "use asm"; "use strict"; return a; }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_duplicate_parameter_test.exs b/test/js/parser/diagnostics/strict_duplicate_parameter_test.exs new file mode 100644 index 000000000..2097f9583 --- /dev/null +++ b/test/js/parser/diagnostics/strict_duplicate_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictDuplicateParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict duplicate parameter diagnostics" do + source = ~S|function f(a, a) { "use strict"; return a; }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_for_in_initializer_test.exs b/test/js/parser/diagnostics/strict_for_in_initializer_test.exs new file mode 100644 index 000000000..d38cca940 --- /dev/null +++ b/test/js/parser/diagnostics/strict_for_in_initializer_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictForInInitializerTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects var for-in initializers in strict scripts" do + assert {:error, %AST.Program{}, errors} = + Parser.parse(~S|"use strict"; for (var a = 0 in object) {}|) + + assert Enum.any?(errors, &(&1.message =~ "initializer")) + end + + test "continues allowing sloppy var identifier for-in initializers" do + assert {:ok, %AST.Program{}} = Parser.parse("for (var a = 0 in object) {}") + end +end diff --git a/test/js/parser/diagnostics/strict_function_body_binding_test.exs b/test/js/parser/diagnostics/strict_function_body_binding_test.exs new file mode 100644 index 000000000..784a2435a --- /dev/null +++ b/test/js/parser/diagnostics/strict_function_body_binding_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictFunctionBodyBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict function body eval binding diagnostics" do + source = ~S|function f() { "use strict"; var eval; }| + + assert {:error, + %AST.Program{body: [%AST.FunctionDeclaration{id: %AST.Identifier{name: "f"}}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end + + test "ports QuickJS strict function body arguments declaration diagnostics" do + source = ~S|function f() { "use strict"; function arguments() {} }| + + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_function_expression_parameter_test.exs b/test/js/parser/diagnostics/strict_function_expression_parameter_test.exs new file mode 100644 index 000000000..30ff4fb49 --- /dev/null +++ b/test/js/parser/diagnostics/strict_function_expression_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictFunctionExpressionParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict function expression parameter diagnostics" do + source = ~S|value = function(a, a) { "use strict"; return a; };| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_function_expression_test.exs b/test/js/parser/diagnostics/strict_function_expression_test.exs new file mode 100644 index 000000000..0d5a8f03a --- /dev/null +++ b/test/js/parser/diagnostics/strict_function_expression_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictFunctionExpressionTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects duplicate function expression parameters in strict code" do + for source <- [ + ~S|"use strict"; (function (param, param) {});|, + ~S|"use strict"; (function (a, b, a) {});| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end + end + + test "rejects restricted function expression names in strict code" do + for source <- [ + ~S|"use strict"; (function eval() {});|, + ~S|"use strict"; (function arguments() {});| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end + end +end diff --git a/test/js/parser/diagnostics/strict_function_name_test.exs b/test/js/parser/diagnostics/strict_function_name_test.exs new file mode 100644 index 000000000..fc3136dd6 --- /dev/null +++ b/test/js/parser/diagnostics/strict_function_name_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictFunctionNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict restricted function declaration name diagnostics" do + source = ~S|function eval() { "use strict"; return 1; }| + + assert {:error, + %AST.Program{body: [%AST.FunctionDeclaration{id: %AST.Identifier{name: "eval"}}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end + + test "ports QuickJS strict restricted function expression name diagnostics" do + source = ~S|value = function arguments() { "use strict"; return 1; };| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_generator_class_method_parameter_test.exs b/test/js/parser/diagnostics/strict_generator_class_method_parameter_test.exs new file mode 100644 index 000000000..cc3157fc8 --- /dev/null +++ b/test/js/parser/diagnostics/strict_generator_class_method_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictGeneratorClassMethodParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict generator class method parameter diagnostics" do + source = ~S|class C { *method(a, a) { "use strict"; yield a; } }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_generator_object_method_parameter_test.exs b/test/js/parser/diagnostics/strict_generator_object_method_parameter_test.exs new file mode 100644 index 000000000..191f01112 --- /dev/null +++ b/test/js/parser/diagnostics/strict_generator_object_method_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictGeneratorObjectMethodParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict generator object method parameter diagnostics" do + source = ~S|object = { *method(a, a) { "use strict"; yield a; } };| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_label_test.exs b/test/js/parser/diagnostics/strict_label_test.exs new file mode 100644 index 000000000..94668ce49 --- /dev/null +++ b/test/js/parser/diagnostics/strict_label_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictLabelTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects restricted labels in strict code" do + for source <- ["\"use strict\"; yield: 1;", "\"use strict\"; y\\u0069eld: 1;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert errors != [] + end + end +end diff --git a/test/js/parser/diagnostics/strict_legacy_octal_literal_test.exs b/test/js/parser/diagnostics/strict_legacy_octal_literal_test.exs new file mode 100644 index 000000000..04c6a7f59 --- /dev/null +++ b/test/js/parser/diagnostics/strict_legacy_octal_literal_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictLegacyOctalLiteralTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict legacy octal literal diagnostics" do + source = ~S|"use strict"; value = 010;| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.ExpressionStatement{}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "legacy octal literal not allowed in strict mode")) + end + + test "ports QuickJS sloppy legacy octal literal allowance" do + assert {:ok, %AST.Program{body: [%AST.ExpressionStatement{}]}} = Parser.parse("value = 010;") + end +end diff --git a/test/js/parser/diagnostics/strict_loop_binding_test.exs b/test/js/parser/diagnostics/strict_loop_binding_test.exs new file mode 100644 index 000000000..a84b23f95 --- /dev/null +++ b/test/js/parser/diagnostics/strict_loop_binding_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictLoopBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict for-loop arguments binding diagnostics" do + source = ~S|function f() { "use strict"; for (var arguments in object) { break; } }| + + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_nested_function_body_test.exs b/test/js/parser/diagnostics/strict_nested_function_body_test.exs new file mode 100644 index 000000000..679998fb1 --- /dev/null +++ b/test/js/parser/diagnostics/strict_nested_function_body_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictNestedFunctionBodyTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "treats nested function declarations inside strict functions as strict code" do + source = ~S|function outer() { "use strict"; function inner() { var static; } }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_nested_function_expression_binding_test.exs b/test/js/parser/diagnostics/strict_nested_function_expression_binding_test.exs new file mode 100644 index 000000000..88a0eb707 --- /dev/null +++ b/test/js/parser/diagnostics/strict_nested_function_expression_binding_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictNestedFunctionExpressionBindingTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects restricted bindings inside nested function expressions in strict code" do + for source <- [ + ~S|"use strict"; (function() { var yield; });|, + ~S|class C { async *m() { return { ...(function() { var yield; }()) }; } }| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end + end +end diff --git a/test/js/parser/diagnostics/strict_non_simple_parameter_test.exs b/test/js/parser/diagnostics/strict_non_simple_parameter_test.exs new file mode 100644 index 000000000..6bc5a55e1 --- /dev/null +++ b/test/js/parser/diagnostics/strict_non_simple_parameter_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictNonSimpleParameterTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects strict function bodies with non-simple parameters" do + for source <- [ + "function f(a = 1) { 'use strict'; }", + "function f({ a }) { 'use strict'; }", + "function f(...rest) { 'use strict'; }", + "({ a = 1 }) => { 'use strict'; };" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "use strict not allowed with non-simple parameters") + ) + end + end +end diff --git a/test/js/parser/diagnostics/strict_object_accessor_parameter_test.exs b/test/js/parser/diagnostics/strict_object_accessor_parameter_test.exs new file mode 100644 index 000000000..2c27f2093 --- /dev/null +++ b/test/js/parser/diagnostics/strict_object_accessor_parameter_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictObjectAccessorParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict object accessor parameter diagnostics" do + source = ~S|object = { set value(eval) { "use strict"; this.value = eval; } };| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_object_method_body_binding_test.exs b/test/js/parser/diagnostics/strict_object_method_body_binding_test.exs new file mode 100644 index 000000000..5e4327944 --- /dev/null +++ b/test/js/parser/diagnostics/strict_object_method_body_binding_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictObjectMethodBodyBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict object method body binding diagnostics" do + source = ~S|object = { method() { "use strict"; var eval; } };| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_object_method_parameter_test.exs b/test/js/parser/diagnostics/strict_object_method_parameter_test.exs new file mode 100644 index 000000000..d79febc6b --- /dev/null +++ b/test/js/parser/diagnostics/strict_object_method_parameter_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictObjectMethodParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict object method parameter diagnostics" do + source = ~S|object = { method(a, a) { "use strict"; return a; } };| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end +end diff --git a/test/js/parser/diagnostics/strict_octal_escape_test.exs b/test/js/parser/diagnostics/strict_octal_escape_test.exs new file mode 100644 index 000000000..1be31dcc4 --- /dev/null +++ b/test/js/parser/diagnostics/strict_octal_escape_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictOctalEscapeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict octal string escape diagnostics" do + source = ~S|"use strict"; value = "\1";| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.ExpressionStatement{}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "octal escape sequence not allowed in strict mode")) + end + + test "ports QuickJS sloppy octal string escape allowance" do + assert {:ok, %AST.Program{body: [%AST.ExpressionStatement{}]}} = + Parser.parse(~S|value = "\1";|) + end +end diff --git a/test/js/parser/diagnostics/strict_program_binding_test.exs b/test/js/parser/diagnostics/strict_program_binding_test.exs new file mode 100644 index 000000000..f5fed879e --- /dev/null +++ b/test/js/parser/diagnostics/strict_program_binding_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictProgramBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict top-level eval binding diagnostics" do + source = ~S|"use strict"; var eval;| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.VariableDeclaration{}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end + + test "ports QuickJS strict top-level arguments function binding diagnostics" do + source = ~S|"use strict"; function arguments() {}| + + assert {:error, + %AST.Program{ + body: [ + %AST.ExpressionStatement{}, + %AST.FunctionDeclaration{id: %AST.Identifier{name: "arguments"}} + ] + }, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_rest_parameter_name_test.exs b/test/js/parser/diagnostics/strict_rest_parameter_name_test.exs new file mode 100644 index 000000000..e7c6696ae --- /dev/null +++ b/test/js/parser/diagnostics/strict_rest_parameter_name_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictRestParameterNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict rest parameter name diagnostics" do + source = ~S|function f(...arguments) { "use strict"; }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_restricted_assignment_test.exs b/test/js/parser/diagnostics/strict_restricted_assignment_test.exs new file mode 100644 index 000000000..d90905968 --- /dev/null +++ b/test/js/parser/diagnostics/strict_restricted_assignment_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictRestrictedAssignmentTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict eval assignment target diagnostics" do + source = ~S|"use strict"; eval = value;| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.ExpressionStatement{}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted assignment target in strict mode")) + end + + test "ports QuickJS strict arguments compound assignment target diagnostics" do + source = ~S|function f() { "use strict"; arguments += value; }| + + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted assignment target in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_restricted_parameter_test.exs b/test/js/parser/diagnostics/strict_restricted_parameter_test.exs new file mode 100644 index 000000000..ab2f122bf --- /dev/null +++ b/test/js/parser/diagnostics/strict_restricted_parameter_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictRestrictedParameterTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict restricted parameter diagnostics" do + for source <- [ + ~S|function f(eval) { "use strict"; }|, + ~S|function g(arguments) { "use strict"; }| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end + end +end diff --git a/test/js/parser/diagnostics/strict_restricted_update_test.exs b/test/js/parser/diagnostics/strict_restricted_update_test.exs new file mode 100644 index 000000000..9bcc89741 --- /dev/null +++ b/test/js/parser/diagnostics/strict_restricted_update_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictRestrictedUpdateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict eval postfix update target diagnostics" do + source = ~S|"use strict"; eval++;| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.ExpressionStatement{}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted assignment target in strict mode")) + end + + test "ports QuickJS strict arguments prefix update target diagnostics" do + source = ~S|function f() { "use strict"; ++arguments; }| + + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted assignment target in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_switch_binding_test.exs b/test/js/parser/diagnostics/strict_switch_binding_test.exs new file mode 100644 index 000000000..7dd7839c4 --- /dev/null +++ b/test/js/parser/diagnostics/strict_switch_binding_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictSwitchBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict switch-case eval binding diagnostics" do + source = ~S|function f() { "use strict"; switch (value) { case 1: var eval; break; } }| + + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "restricted binding name in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_with_function_body_test.exs b/test/js/parser/diagnostics/strict_with_function_body_test.exs new file mode 100644 index 000000000..e6d6116e1 --- /dev/null +++ b/test/js/parser/diagnostics/strict_with_function_body_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictWithFunctionBodyTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects with statements in nested function expressions under script strict mode" do + assert {:error, %AST.Program{}, errors} = + Parser.parse("\"use strict\"; var f = function () { with (o) {} };") + + assert Enum.any?(errors, &(&1.message == "with statement not allowed in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_with_object_method_test.exs b/test/js/parser/diagnostics/strict_with_object_method_test.exs new file mode 100644 index 000000000..4502bb13f --- /dev/null +++ b/test/js/parser/diagnostics/strict_with_object_method_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictWithObjectMethodTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects with statements in object methods under script strict mode" do + assert {:error, %AST.Program{}, errors} = + Parser.parse("\"use strict\"; var obj = { get value() { with (obj) {} } };") + + assert Enum.any?(errors, &(&1.message == "with statement not allowed in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_with_statement_test.exs b/test/js/parser/diagnostics/strict_with_statement_test.exs new file mode 100644 index 000000000..825e8c24d --- /dev/null +++ b/test/js/parser/diagnostics/strict_with_statement_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictWithStatementTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict program with-statement diagnostics" do + source = ~S|"use strict"; with (object) { value; }| + + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}, %AST.WithStatement{}]}, + errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "with statement not allowed in strict mode")) + end + + test "ports QuickJS strict function with-statement diagnostics" do + source = ~S|function f() { "use strict"; with (object) { value; } }| + + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse(source) + + assert Enum.any?(errors, &(&1.message == "with statement not allowed in strict mode")) + end +end diff --git a/test/js/parser/diagnostics/strict_yield_destructuring_assignment_test.exs b/test/js/parser/diagnostics/strict_yield_destructuring_assignment_test.exs new file mode 100644 index 000000000..47085c485 --- /dev/null +++ b/test/js/parser/diagnostics/strict_yield_destructuring_assignment_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictYieldDestructuringAssignmentTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects yield references inside strict destructuring assignment targets" do + for source <- [ + ~S|"use strict"; [...x[yield]] = [];|, + ~S|"use strict"; ({p: x[yield]} = {});|, + ~S|"use strict"; [x = yield] = [];| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "yield expression not within generator")) + end + end +end diff --git a/test/js/parser/diagnostics/strict_yield_parameter_initializer_test.exs b/test/js/parser/diagnostics/strict_yield_parameter_initializer_test.exs new file mode 100644 index 000000000..77c8dc069 --- /dev/null +++ b/test/js/parser/diagnostics/strict_yield_parameter_initializer_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StrictYieldParameterInitializerTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects yield parameter defaults in strict function expressions" do + source = ~S|"use strict"; function *g() { 0, function(x = yield) {}; }| + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end + + test "parses yield as an identifier in non-generator function parameters outside strict code" do + source = "function *g() { 0, function(x = yield) {}; }" + + assert {:ok, %AST.Program{}} = Parser.parse(source) + end +end diff --git a/test/js/parser/diagnostics/string_import_local_error_test.exs b/test/js/parser/diagnostics/string_import_local_error_test.exs new file mode 100644 index 000000000..d68687718 --- /dev/null +++ b/test/js/parser/diagnostics/string_import_local_error_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.StringImportLocalErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS string import local-name diagnostics" do + source = ~S(import { "external-name" as "local-name" } from "dep";) + + assert {:error, %AST.Program{source_type: :module}, [_ | _]} = + Parser.parse(source, source_type: :module) + end +end diff --git a/test/js/parser/diagnostics/super_context_test.exs b/test/js/parser/diagnostics/super_context_test.exs new file mode 100644 index 000000000..7a1669d9f --- /dev/null +++ b/test/js/parser/diagnostics/super_context_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.SuperContextTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS top-level super call diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("super();") + + assert Enum.any?(errors, &(&1.message == "super not allowed outside class method")) + end + + test "ports QuickJS function super property diagnostics" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse("function f() { return super.value; }") + + assert Enum.any?(errors, &(&1.message == "super not allowed outside class method")) + end +end diff --git a/test/js/parser/diagnostics/super_optional_chain_test.exs b/test/js/parser/diagnostics/super_optional_chain_test.exs new file mode 100644 index 000000000..1327d691f --- /dev/null +++ b/test/js/parser/diagnostics/super_optional_chain_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.SuperOptionalChainTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS super optional member diagnostics" do + source = "class C extends B { method() { return super?.property; } }" + + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "optional chain not allowed on super")) + end + + test "ports QuickJS super optional call diagnostics" do + source = "class C extends B { constructor() { super?.(); } }" + + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "optional chain not allowed on super")) + end +end diff --git a/test/js/parser/diagnostics/super_parameter_context_test.exs b/test/js/parser/diagnostics/super_parameter_context_test.exs new file mode 100644 index 000000000..731d3a784 --- /dev/null +++ b/test/js/parser/diagnostics/super_parameter_context_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.SuperParameterContextTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects super in function and arrow parameter initializers" do + for source <- [ + "value = async function (x = super.prop) {};", + "value = async function (x = super()) {};", + "value = async (x = super.prop) => x;", + "value = async (x = super()) => x;" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "super not allowed outside class method")) + end + end +end diff --git a/test/js/parser/diagnostics/syntax_error_test.exs b/test/js/parser/diagnostics/syntax_error_test.exs new file mode 100644 index 000000000..0bbc9eff9 --- /dev/null +++ b/test/js/parser/diagnostics/syntax_error_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.SyntaxErrorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS syntax errors for incomplete control statements" do + for source <- ["do", "do;", "do{}", "if", "if\n", "if 1", "if ;", "if abc", "while"] do + assert {:error, %AST.Program{}, [_ | _]} = Parser.parse(source) + end + end + + test "ports QuickJS syntax errors for incomplete class and switch statements" do + for source <- ["class", "class C", "switch", "switch (x)", "try {}"] do + assert {:error, %AST.Program{}, [_ | _]} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/diagnostics/throw_line_terminator_test.exs b/test/js/parser/diagnostics/throw_line_terminator_test.exs new file mode 100644 index 000000000..9f957a69c --- /dev/null +++ b/test/js/parser/diagnostics/throw_line_terminator_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.ThrowLineTerminatorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS throw line terminator diagnostics" do + assert {:error, + %AST.Program{body: [%AST.ThrowStatement{argument: nil}, %AST.ExpressionStatement{}]}, + errors} = + Parser.parse("throw\nerror;") + + assert Enum.any?(errors, &(&1.message == "line terminator after throw")) + end +end diff --git a/test/js/parser/diagnostics/top_level_return_test.exs b/test/js/parser/diagnostics/top_level_return_test.exs new file mode 100644 index 000000000..58a1bbf0c --- /dev/null +++ b/test/js/parser/diagnostics/top_level_return_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.TopLevelReturnTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS top-level return diagnostics" do + assert {:error, %AST.Program{body: [%AST.ReturnStatement{}]}, errors} = + Parser.parse("return value;") + + assert Enum.any?(errors, &(&1.message == "return statement not within function")) + end + + test "ports QuickJS return diagnostics from top-level block" do + assert {:error, %AST.Program{body: [%AST.BlockStatement{}]}, errors} = + Parser.parse("{ return; }") + + assert Enum.any?(errors, &(&1.message == "return statement not within function")) + end +end diff --git a/test/js/parser/diagnostics/try_missing_handler_test.exs b/test/js/parser/diagnostics/try_missing_handler_test.exs new file mode 100644 index 000000000..0cb67dbe0 --- /dev/null +++ b/test/js/parser/diagnostics/try_missing_handler_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.TryMissingHandlerTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS try without catch or finally diagnostics" do + assert {:error, %AST.Program{body: [%AST.TryStatement{handler: nil, finalizer: nil}]}, errors} = + Parser.parse("try { work(); }") + + assert Enum.any?(errors, &(&1.message == "expected catch or finally")) + end +end diff --git a/test/js/parser/diagnostics/undeclared_private_name_test.exs b/test/js/parser/diagnostics/undeclared_private_name_test.exs new file mode 100644 index 000000000..cb4bb1473 --- /dev/null +++ b/test/js/parser/diagnostics/undeclared_private_name_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.UndeclaredPrivateNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS undeclared private member diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C { method() { return this.#missing; } }") + + assert Enum.any?(errors, &(&1.message == "undeclared private name")) + end + + test "ports QuickJS undeclared private in-expression diagnostics" do + assert {:error, %AST.Program{body: [%AST.ClassDeclaration{}]}, errors} = + Parser.parse("class C { method() { return #missing in this; } }") + + assert Enum.any?(errors, &(&1.message == "undeclared private name")) + end +end diff --git a/test/js/parser/diagnostics/unterminated_regexp_test.exs b/test/js/parser/diagnostics/unterminated_regexp_test.exs new file mode 100644 index 000000000..989f94a4b --- /dev/null +++ b/test/js/parser/diagnostics/unterminated_regexp_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.UnterminatedRegexpTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS unterminated regexp diagnostics" do + for source <- ["value = /unterminated", "value = /line\nbreak/;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "unterminated regular expression literal")) + end + end +end diff --git a/test/js/parser/diagnostics/unterminated_string_test.exs b/test/js/parser/diagnostics/unterminated_string_test.exs new file mode 100644 index 000000000..c04d90b4a --- /dev/null +++ b/test/js/parser/diagnostics/unterminated_string_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.UnterminatedStringTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS unterminated string diagnostics" do + for source <- [~S(value = "unterminated), "value = \"line\nbreak\";"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "unterminated string literal")) + end + end +end diff --git a/test/js/parser/diagnostics/unterminated_template_test.exs b/test/js/parser/diagnostics/unterminated_template_test.exs new file mode 100644 index 000000000..ab4c9b8db --- /dev/null +++ b/test/js/parser/diagnostics/unterminated_template_test.exs @@ -0,0 +1,12 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.UnterminatedTemplateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS unterminated template diagnostics" do + assert {:error, %AST.Program{}, errors} = Parser.parse("value = `unterminated") + assert Enum.any?(errors, &(&1.message == "unterminated template literal")) + end +end diff --git a/test/js/parser/diagnostics/update_target_test.exs b/test/js/parser/diagnostics/update_target_test.exs new file mode 100644 index 000000000..2a86cb6f5 --- /dev/null +++ b/test/js/parser/diagnostics/update_target_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.UpdateTargetTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects this as an update target" do + for source <- ["++this;", "this++;", "--this;", "this--;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid assignment target")) + end + end + + test "does not parse postfix update operators across line terminators" do + for source <- ["x\n++;", "x\u2028++;", "x\u2029--;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert errors != [] + end + end +end diff --git a/test/js/parser/diagnostics/yield_context_test.exs b/test/js/parser/diagnostics/yield_context_test.exs new file mode 100644 index 000000000..c77b4d2a2 --- /dev/null +++ b/test/js/parser/diagnostics/yield_context_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.YieldContextTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS module yield expression context diagnostics" do + assert {:error, %AST.Program{body: [%AST.ExpressionStatement{}]}, errors} = + Parser.parse("yield value;", source_type: :module) + + assert Enum.any?(errors, &(&1.message == "yield expression not within generator")) + end + + test "ports QuickJS non-generator function yield identifier syntax" do + assert {:ok, %AST.Program{body: [%AST.FunctionDeclaration{}]}} = + Parser.parse("function f() { var yield = 1; yield; }") + end +end diff --git a/test/js/parser/diagnostics/yield_nested_expression_test.exs b/test/js/parser/diagnostics/yield_nested_expression_test.exs new file mode 100644 index 000000000..dceeb439f --- /dev/null +++ b/test/js/parser/diagnostics/yield_nested_expression_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.YieldNestedExpressionTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects nested yield expressions in binary yield operands" do + assert {:error, %AST.Program{}, errors} = + Parser.parse("var g = function*() { yield 3 + yield 4; };") + + assert Enum.any?(errors, &(&1.message == "yield expression not allowed here")) + end + + test "allows yield as the direct operand of another yield" do + assert {:ok, %AST.Program{}} = Parser.parse("var g = function*() { yield yield 1; };") + end + + test "allows nested yield when parenthesized inside a yield operand" do + assert {:ok, %AST.Program{}} = Parser.parse("var g = function*() { yield 3 + (yield 4); };") + end +end diff --git a/test/js/parser/diagnostics/yield_star_line_terminator_test.exs b/test/js/parser/diagnostics/yield_star_line_terminator_test.exs new file mode 100644 index 000000000..4070ee57c --- /dev/null +++ b/test/js/parser/diagnostics/yield_star_line_terminator_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.YieldStarLineTerminatorTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects line terminator before yield star delegate" do + source = "async function *g() { yield\n* value; }" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "yield delegate cannot start after line terminator")) + end + + test "preserves same-line yield star delegate" do + assert {:ok, %AST.Program{}} = Parser.parse("async function *g() { yield * value; }") + end +end diff --git a/test/js/parser/diagnostics/yield_unary_operand_test.exs b/test/js/parser/diagnostics/yield_unary_operand_test.exs new file mode 100644 index 000000000..8c8beafa9 --- /dev/null +++ b/test/js/parser/diagnostics/yield_unary_operand_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Diagnostics.YieldUnaryOperandTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects yield as a unary operand in generator bodies" do + for source <- ["function *g() { void yield; }", "async function *g() { void yi\\u0065ld; }"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "yield expression not allowed as unary operand")) + end + end +end diff --git a/test/js/parser/expressions/accessor_literal_key_test.exs b/test/js/parser/expressions/accessor_literal_key_test.exs new file mode 100644 index 000000000..b8cf4636f --- /dev/null +++ b/test/js/parser/expressions/accessor_literal_key_test.exs @@ -0,0 +1,25 @@ +defmodule QuickBEAM.JS.Parser.Expressions.AccessorLiteralKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible object accessor literal keys" do + source = + ~s|object = { get "value-name"() { return 1; }, set 0(value) { this.value = value; } };| + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{key: %AST.Literal{value: "value-name"}, kind: :get}, + %AST.Property{key: %AST.Literal{value: 0}, kind: :set} + ] + } + } + } = statement + end +end diff --git a/test/js/parser/expressions/async_generator_computed_method_test.exs b/test/js/parser/expressions/async_generator_computed_method_test.exs new file mode 100644 index 000000000..ff6a179b4 --- /dev/null +++ b/test/js/parser/expressions/async_generator_computed_method_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.Expressions.AsyncGeneratorComputedMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS async generator computed object methods" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.MemberExpression{ + object: %AST.ObjectExpression{ + properties: [ + %AST.Property{ + method: true, + computed: true, + value: %AST.FunctionExpression{async: true, generator: true} + } + ] + } + } + } + ] + } + ] + }} = Parser.parse(~s|let g = { async * ["g"]() {} }.g;|) + end +end diff --git a/test/js/parser/expressions/async_numeric_method_key_test.exs b/test/js/parser/expressions/async_numeric_method_key_test.exs new file mode 100644 index 000000000..b52afdf07 --- /dev/null +++ b/test/js/parser/expressions/async_numeric_method_key_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Expressions.AsyncNumericMethodKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible async numeric object method names" do + source = "object = { async 0() { return 1; }, async *1.5() { yield 2; } };" + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{ + key: %AST.Literal{value: 0}, + value: %AST.FunctionExpression{async: true, generator: false} + }, + %AST.Property{ + key: %AST.Literal{value: 1.5}, + value: %AST.FunctionExpression{async: true, generator: true} + } + ] + } + } + } = statement + end +end diff --git a/test/js/parser/expressions/binary_operator_test.exs b/test/js/parser/expressions/binary_operator_test.exs new file mode 100644 index 000000000..936444604 --- /dev/null +++ b/test/js/parser/expressions/binary_operator_test.exs @@ -0,0 +1,57 @@ +defmodule QuickBEAM.JS.Parser.Expressions.BinaryOperatorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS binary and logical operator syntax" do + source = """ + r = 1 + 2 * 3 ** 4; + a.x++; + a[0]--; + r = "x" in a && a instanceof Object; + """ + + assert {:ok, %AST.Program{body: [assignment, member_inc, element_dec, logical]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.BinaryExpression{ + operator: "+", + right: %AST.BinaryExpression{ + operator: "*", + right: %AST.BinaryExpression{operator: "**"} + } + } + } + } = assignment + + assert %AST.ExpressionStatement{ + expression: %AST.UpdateExpression{ + operator: "++", + prefix: false, + argument: %AST.MemberExpression{computed: false} + } + } = member_inc + + assert %AST.ExpressionStatement{ + expression: %AST.UpdateExpression{ + operator: "--", + prefix: false, + argument: %AST.MemberExpression{computed: true} + } + } = element_dec + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.LogicalExpression{ + operator: "&&", + left: %AST.BinaryExpression{operator: "in"}, + right: %AST.BinaryExpression{operator: "instanceof"} + } + } + } = logical + end +end diff --git a/test/js/parser/expressions/boxed_constructor_equality_test.exs b/test/js/parser/expressions/boxed_constructor_equality_test.exs new file mode 100644 index 000000000..a2df2a31f --- /dev/null +++ b/test/js/parser/expressions/boxed_constructor_equality_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.Expressions.BoxedConstructorEqualityTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS boxed constructor equality syntax" do + source = """ + (new Number(1)) == 1; + 2 == (new Number(2)); + (new String("abc")) == "abc"; + """ + + assert {:ok, %AST.Program{body: [number_left, number_right, string_left]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{ + operator: "==", + left: %AST.NewExpression{callee: %AST.Identifier{name: "Number"}} + } + } = number_left + + assert %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{ + operator: "==", + right: %AST.NewExpression{callee: %AST.Identifier{name: "Number"}} + } + } = number_right + + assert %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{ + operator: "==", + left: %AST.NewExpression{callee: %AST.Identifier{name: "String"}} + } + } = string_left + end +end diff --git a/test/js/parser/expressions/conditional_object_property_test.exs b/test/js/parser/expressions/conditional_object_property_test.exs new file mode 100644 index 000000000..a5e0daffb --- /dev/null +++ b/test/js/parser/expressions/conditional_object_property_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ConditionalObjectPropertyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "does not consume object property separator after conditional value" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{ + key: %AST.MemberExpression{}, + computed: true, + value: %AST.ConditionalExpression{} + } + ] + } + } + } + ] + }} = + Parser.parse( + "ta.constructor = { [Symbol.species]: TA === Uint8Array ? Int32Array : Uint8Array, };" + ) + end +end diff --git a/test/js/parser/expressions/constructor_delete_typeof_test.exs b/test/js/parser/expressions/constructor_delete_typeof_test.exs new file mode 100644 index 000000000..a3482764c --- /dev/null +++ b/test/js/parser/expressions/constructor_delete_typeof_test.exs @@ -0,0 +1,51 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ConstructorDeleteTypeofTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS constructor, delete, and typeof syntax" do + source = """ + a = new Object; + b = new F(2); + delete a.x; + r = typeof unknown_var; + """ + + assert {:ok, + %AST.Program{body: [new_without_args, new_with_args, delete_member, typeof_expr]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.NewExpression{callee: %AST.Identifier{name: "Object"}, arguments: []} + } + } = new_without_args + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.NewExpression{ + callee: %AST.Identifier{name: "F"}, + arguments: [%AST.Literal{value: 2}] + } + } + } = new_with_args + + assert %AST.ExpressionStatement{ + expression: %AST.UnaryExpression{ + operator: "delete", + argument: %AST.MemberExpression{property: %AST.Identifier{name: "x"}} + } + } = delete_member + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.UnaryExpression{ + operator: "typeof", + argument: %AST.Identifier{name: "unknown_var"} + } + } + } = typeof_expr + end +end diff --git a/test/js/parser/expressions/delete_member_test.exs b/test/js/parser/expressions/delete_member_test.exs new file mode 100644 index 000000000..6addadd50 --- /dev/null +++ b/test/js/parser/expressions/delete_member_test.exs @@ -0,0 +1,49 @@ +defmodule QuickBEAM.JS.Parser.Expressions.DeleteMemberTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS delete computed and super member syntax" do + source = """ + delete "abc"[100]; + a = { f() { delete super.a; } }; + """ + + assert {:ok, %AST.Program{body: [delete_string_index, object_method]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.UnaryExpression{ + operator: "delete", + argument: %AST.MemberExpression{object: %AST.Literal{value: "abc"}, computed: true} + } + } = delete_string_index + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{ + method: true, + value: %AST.FunctionExpression{ + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.UnaryExpression{ + operator: "delete", + argument: %AST.MemberExpression{ + object: %AST.Identifier{name: "super"} + } + } + } + ] + } + } + } + ] + } + } + } = object_method + end +end diff --git a/test/js/parser/expressions/division_expression_test.exs b/test/js/parser/expressions/division_expression_test.exs new file mode 100644 index 000000000..8b0294938 --- /dev/null +++ b/test/js/parser/expressions/division_expression_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.Expressions.DivisionExpressionTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible division expression tokenization" do + source = """ + value = a / b / c; + member = object.value / 2; + call = fn() / divisor; + """ + + assert {:ok, %AST.Program{body: [division, member_division, call_division]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.BinaryExpression{ + operator: "/", + left: %AST.BinaryExpression{operator: "/"} + } + } + } = division + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.BinaryExpression{operator: "/", left: %AST.MemberExpression{}} + } + } = member_division + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.BinaryExpression{operator: "/", left: %AST.CallExpression{}} + } + } = call_division + end +end diff --git a/test/js/parser/expressions/escaped_accessor_keyword_test.exs b/test/js/parser/expressions/escaped_accessor_keyword_test.exs new file mode 100644 index 000000000..ce4faeffc --- /dev/null +++ b/test/js/parser/expressions/escaped_accessor_keyword_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Expressions.EscapedAccessorKeywordTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects escaped get and set contextual keywords in object accessors" do + for source <- ["({ \\u0067et m() {} });", "({ \\u0073et m(v) {} });"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert errors != [] + end + end + + test "allows unescaped get and set contextual keywords in object accessors" do + assert {:ok, %AST.Program{}} = Parser.parse("({ get m() {}, set m(v) {} });") + end +end diff --git a/test/js/parser/expressions/generator_literal_method_key_test.exs b/test/js/parser/expressions/generator_literal_method_key_test.exs new file mode 100644 index 000000000..8e7adafbc --- /dev/null +++ b/test/js/parser/expressions/generator_literal_method_key_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Expressions.GeneratorLiteralMethodKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible generator literal object method names" do + source = ~s|object = { *"string-name"() { yield 1; }, *0() { yield 2; } };| + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{ + key: %AST.Literal{value: "string-name"}, + value: %AST.FunctionExpression{generator: true} + }, + %AST.Property{ + key: %AST.Literal{value: 0}, + value: %AST.FunctionExpression{generator: true} + } + ] + } + } + } = statement + end +end diff --git a/test/js/parser/expressions/grouped_optional_call_test.exs b/test/js/parser/expressions/grouped_optional_call_test.exs new file mode 100644 index 000000000..55eb15ee7 --- /dev/null +++ b/test/js/parser/expressions/grouped_optional_call_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.Expressions.GroupedOptionalCallTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS grouped optional member call syntax" do + source = """ + (a?.b)().c; + (a?.["b"])().c; + """ + + assert {:ok, %AST.Program{body: [member_call, computed_call]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.MemberExpression{ + object: %AST.CallExpression{ + callee: %AST.MemberExpression{optional: true, computed: false} + }, + property: %AST.Identifier{name: "c"} + } + } = member_call + + assert %AST.ExpressionStatement{ + expression: %AST.MemberExpression{ + object: %AST.CallExpression{ + callee: %AST.MemberExpression{optional: true, computed: true} + }, + property: %AST.Identifier{name: "c"} + } + } = computed_call + end +end diff --git a/test/js/parser/expressions/new_target_escape_test.exs b/test/js/parser/expressions/new_target_escape_test.exs new file mode 100644 index 000000000..4f9cd8ff6 --- /dev/null +++ b/test/js/parser/expressions/new_target_escape_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Expressions.NewTargetEscapeTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects escaped new.target meta-property keywords" do + for source <- ["function f() { \\u006eew.target; }", "function f() { new.\\u0074arget; }"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid meta property")) + end + end + + test "allows literal new.target" do + assert {:ok, %AST.Program{}} = Parser.parse("function f() { new.target; }") + end +end diff --git a/test/js/parser/expressions/nullish_logical_test.exs b/test/js/parser/expressions/nullish_logical_test.exs new file mode 100644 index 000000000..239f0ade7 --- /dev/null +++ b/test/js/parser/expressions/nullish_logical_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.Expressions.NullishLogicalTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible nullish coalescing and logical assignment syntax" do + source = """ + value = fallback ?? defaultValue; + value ??= defaultValue; + value ||= defaultValue; + value &&= defaultValue; + """ + + assert {:ok, %AST.Program{body: [coalesce, nullish_assign, or_assign, and_assign]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.LogicalExpression{operator: "??"}} + } = coalesce + + assert %AST.ExpressionStatement{expression: %AST.AssignmentExpression{operator: "??="}} = + nullish_assign + + assert %AST.ExpressionStatement{expression: %AST.AssignmentExpression{operator: "||="}} = + or_assign + + assert %AST.ExpressionStatement{expression: %AST.AssignmentExpression{operator: "&&="}} = + and_assign + end +end diff --git a/test/js/parser/expressions/number_member_call_test.exs b/test/js/parser/expressions/number_member_call_test.exs new file mode 100644 index 000000000..e62e12c91 --- /dev/null +++ b/test/js/parser/expressions/number_member_call_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Expressions.NumberMemberCallTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS parenthesized number member call syntax" do + assert {:ok, %AST.Program{body: [statement]}} = + Parser.parse("(19686109595169230000).toString();") + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{ + object: %AST.Literal{value: value}, + property: %AST.Identifier{name: "toString"} + }, + arguments: [] + } + } = statement + + assert value == 19_686_109_595_169_230_000 + end +end diff --git a/test/js/parser/expressions/numeric_conversion_expression_test.exs b/test/js/parser/expressions/numeric_conversion_expression_test.exs new file mode 100644 index 000000000..4f7806ecd --- /dev/null +++ b/test/js/parser/expressions/numeric_conversion_expression_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Expressions.NumericConversionExpressionTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS numeric conversion expression syntax" do + source = """ + NaN | 0; + Infinity | 0; + (-Infinity) | 0; + "12345" >>> 0; + (4294967296 * 3 - 4) >>> 0; + """ + + assert {:ok, %AST.Program{body: statements}} = Parser.parse(source) + assert length(statements) == 5 + + assert Enum.all?(statements, fn + %AST.ExpressionStatement{expression: %AST.BinaryExpression{operator: operator}} + when operator in ["|", ">>>"] -> + true + + _ -> + false + end) + + assert %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{ + operator: ">>>", + left: %AST.BinaryExpression{operator: "-"} + } + } = List.last(statements) + end +end diff --git a/test/js/parser/expressions/numeric_property_initializer_test.exs b/test/js/parser/expressions/numeric_property_initializer_test.exs new file mode 100644 index 000000000..abe93005b --- /dev/null +++ b/test/js/parser/expressions/numeric_property_initializer_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Expressions.NumericPropertyInitializerTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows numeric literal property initializers" do + assert {:ok, %AST.Program{}} = Parser.parse("({ 0: 0 });") + end + + test "keeps numeric literal shorthand invalid" do + assert {:error, %AST.Program{}, errors} = Parser.parse("({ 0 });") + assert Enum.any?(errors, &(&1.message == "invalid object initializer")) + end +end diff --git a/test/js/parser/expressions/numeric_property_key_test.exs b/test/js/parser/expressions/numeric_property_key_test.exs new file mode 100644 index 000000000..f589f9a9c --- /dev/null +++ b/test/js/parser/expressions/numeric_property_key_test.exs @@ -0,0 +1,25 @@ +defmodule QuickBEAM.JS.Parser.Expressions.NumericPropertyKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible numeric object property names" do + source = "object = { 0: zero, 1.5: decimal, 0x10: hex };" + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{key: %AST.Literal{value: 0}}, + %AST.Property{key: %AST.Literal{value: 1.5}}, + %AST.Property{key: %AST.Literal{value: 16}} + ] + } + } + } = statement + end +end diff --git a/test/js/parser/expressions/object_accessor_arity_test.exs b/test/js/parser/expressions/object_accessor_arity_test.exs new file mode 100644 index 000000000..5d53d7d8c --- /dev/null +++ b/test/js/parser/expressions/object_accessor_arity_test.exs @@ -0,0 +1,25 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ObjectAccessorArityTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "validates object accessor arity" do + for source <- [ + "({ get value(param = null) {} });", + "({ set value() {} });", + "({ set value(a, b) {} });" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "invalid number of arguments for getter or setter") + ) + end + end + + test "allows valid object accessors" do + assert {:ok, %AST.Program{}} = Parser.parse("({ get value() {}, set value(v) {} });") + end +end diff --git a/test/js/parser/expressions/object_initializer_error_test.exs b/test/js/parser/expressions/object_initializer_error_test.exs new file mode 100644 index 000000000..defb81b73 --- /dev/null +++ b/test/js/parser/expressions/object_initializer_error_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ObjectInitializerErrorTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects cover initialized names in object literals" do + assert {:error, %AST.Program{}, errors} = Parser.parse("({ a = 1 });") + assert Enum.any?(errors, &(&1.message == "invalid object initializer")) + end + + test "rejects non-identifier shorthand property names" do + assert {:error, %AST.Program{}, errors} = Parser.parse("({ 0 });") + assert Enum.any?(errors, &(&1.message == "invalid object initializer")) + end + + test "preserves object assignment pattern defaults" do + assert {:ok, %AST.Program{}} = Parser.parse("({ a = 1 } = obj);") + end +end diff --git a/test/js/parser/expressions/object_method_body_binding_test.exs b/test/js/parser/expressions/object_method_body_binding_test.exs new file mode 100644 index 000000000..86802bf9c --- /dev/null +++ b/test/js/parser/expressions/object_method_body_binding_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ObjectMethodBodyBindingTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects yield bindings in generator object method bodies" do + assert {:error, %AST.Program{}, errors} = Parser.parse("({ *method() { var yield; } });") + assert Enum.any?(errors, &(&1.message == "yield parameter not allowed in generator function")) + end + + test "rejects await bindings in async object method bodies" do + assert {:error, %AST.Program{}, errors} = Parser.parse("({ async method() { var await; } });") + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end +end diff --git a/test/js/parser/expressions/object_method_params_test.exs b/test/js/parser/expressions/object_method_params_test.exs new file mode 100644 index 000000000..98cba6dfb --- /dev/null +++ b/test/js/parser/expressions/object_method_params_test.exs @@ -0,0 +1,44 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ObjectMethodParamsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects duplicate object method parameters" do + for source <- ["({ method(a, a) {} });", "({ async method(a, a) {} });"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "duplicate parameter name not allowed in strict mode") + ) + end + end + + test "rejects super calls in regular and generator object method parameters" do + for source <- ["({ method(x = super()) {} });", "({ *method(x = super()) {} });"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "super not allowed outside class method")) + end + end + + test "allows super properties in object method parameters" do + for source <- [ + "({ method(x = super.value) {} });", + "({ *method(x = super.value) {} });", + "({ async method(x = super.value) {} });" + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "rejects direct super calls in async object method parameters" do + assert {:error, %AST.Program{}, errors} = Parser.parse("({ async method(x = super()) {} });") + assert Enum.any?(errors, &(&1.message == "super not allowed outside class method")) + end + + test "rejects await in async object method parameter defaults" do + assert {:error, %AST.Program{}, errors} = Parser.parse("({ async method(x = await) {} });") + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end +end diff --git a/test/js/parser/expressions/object_method_static_block_await_test.exs b/test/js/parser/expressions/object_method_static_block_await_test.exs new file mode 100644 index 000000000..02473771f --- /dev/null +++ b/test/js/parser/expressions/object_method_static_block_await_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ObjectMethodStaticBlockAwaitTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "treats await as an identifier inside non-async object methods nested in static blocks" do + for source <- [ + "class C { static { ({ method(x = await) { return await; } }); } }", + "class C { static { ({ *method(x = await) { return await; } }); } }", + "class C { static { ({ get value() { return await; } }); } }" + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/expressions/object_method_super_test.exs b/test/js/parser/expressions/object_method_super_test.exs new file mode 100644 index 000000000..3a6e27862 --- /dev/null +++ b/test/js/parser/expressions/object_method_super_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ObjectMethodSuperTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows super property access inside object methods and accessors" do + for source <- [ + "object = { method() { return super.x; } };", + "object = { get value() { return super.x; } };", + "object = { set value(v) { super.x = v; } };" + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "still rejects super calls inside object methods" do + assert {:error, %AST.Program{}, errors} = Parser.parse("object = { method() { super(); } };") + assert Enum.any?(errors, &(&1.message == "super not allowed outside class method")) + end +end diff --git a/test/js/parser/expressions/object_names_call_chain_test.exs b/test/js/parser/expressions/object_names_call_chain_test.exs new file mode 100644 index 000000000..84f84dbe8 --- /dev/null +++ b/test/js/parser/expressions/object_names_call_chain_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ObjectNamesCallChainTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS object names call-chain syntax" do + assert {:ok, %AST.Program{body: [statement]}} = + Parser.parse("Object.getOwnPropertyNames(x).toString();") + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{ + property: %AST.Identifier{name: "toString"}, + object: %AST.CallExpression{ + callee: %AST.MemberExpression{ + object: %AST.Identifier{name: "Object"}, + property: %AST.Identifier{name: "getOwnPropertyNames"} + }, + arguments: [%AST.Identifier{name: "x"}] + } + }, + arguments: [] + } + } = statement + end +end diff --git a/test/js/parser/expressions/object_spread_test.exs b/test/js/parser/expressions/object_spread_test.exs new file mode 100644 index 000000000..2f47f9370 --- /dev/null +++ b/test/js/parser/expressions/object_spread_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ObjectSpreadTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible object spread property syntax" do + source = "object = { a: 1, ...rest, b };" + + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{expression: %AST.AssignmentExpression{right: object}} + ] + }} = + Parser.parse(source) + + assert %AST.ObjectExpression{ + properties: [ + %AST.Property{key: %AST.Identifier{name: "a"}, value: %AST.Literal{value: 1}}, + %AST.SpreadElement{argument: %AST.Identifier{name: "rest"}}, + %AST.Property{ + key: %AST.Identifier{name: "b"}, + value: %AST.Identifier{name: "b"}, + shorthand: true + } + ] + } = object + end +end diff --git a/test/js/parser/expressions/object_strict_accessor_test.exs b/test/js/parser/expressions/object_strict_accessor_test.exs new file mode 100644 index 000000000..93fca1dbd --- /dev/null +++ b/test/js/parser/expressions/object_strict_accessor_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ObjectStrictAccessorTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects future reserved assignments in strict accessor bodies" do + for source <- [ + ~S|({ get value() { "use strict"; public = 1; } });|, + ~S|({ set value(v) { "use strict"; public = 1; } });|, + ~S|"use strict"; void { get value() { public = 1; } };|, + ~S|"use strict"; void { set value(v) { public = 1; } };| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted assignment target in strict mode")) + end + end + + test "rejects restricted setter parameters in strict programs" do + for source <- [ + ~S|"use strict"; ({ set value(eval) {} });|, + ~S|"use strict"; ({ set value(arguments) {} });| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end + end +end diff --git a/test/js/parser/expressions/optional_call_test.exs b/test/js/parser/expressions/optional_call_test.exs new file mode 100644 index 000000000..1a18dbae7 --- /dev/null +++ b/test/js/parser/expressions/optional_call_test.exs @@ -0,0 +1,37 @@ +defmodule QuickBEAM.JS.Parser.Expressions.OptionalCallTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible optional call syntax" do + source = """ + fn?.(); + obj.method?.(); + obj?.method?.(x); + """ + + assert {:ok, %AST.Program{body: [direct_call, method_call, chained_call]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.Identifier{name: "fn"}, optional: true} + } = direct_call + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{property: %AST.Identifier{name: "method"}}, + optional: true + } + } = method_call + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{optional: true}, + arguments: [%AST.Identifier{name: "x"}], + optional: true + } + } = chained_call + end +end diff --git a/test/js/parser/expressions/optional_chaining_lookahead_test.exs b/test/js/parser/expressions/optional_chaining_lookahead_test.exs new file mode 100644 index 000000000..672538a18 --- /dev/null +++ b/test/js/parser/expressions/optional_chaining_lookahead_test.exs @@ -0,0 +1,41 @@ +defmodule QuickBEAM.JS.Parser.Expressions.OptionalChainingLookaheadTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS optional chaining decimal lookahead" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.ConditionalExpression{ + consequent: %AST.Literal{value: 0.3}, + alternate: %AST.Literal{value: false} + } + } + ] + } + ] + }} = Parser.parse("const value = true ?.30 : false;") + end + + test "ports QuickJS optional member access on constructed value" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + arguments: [ + %AST.Literal{value: 99}, + %AST.MemberExpression{object: %AST.NewExpression{}, optional: true} + ] + } + } + ] + }} = Parser.parse("assert.sameValue(99, new D(99)?.a);") + end +end diff --git a/test/js/parser/expressions/optional_chaining_test.exs b/test/js/parser/expressions/optional_chaining_test.exs new file mode 100644 index 000000000..f1a961ff5 --- /dev/null +++ b/test/js/parser/expressions/optional_chaining_test.exs @@ -0,0 +1,40 @@ +defmodule QuickBEAM.JS.Parser.Expressions.OptionalChainingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS optional chaining member call and computed syntax" do + source = """ + a?.b; + a?.b(); + a?.["b"](); + delete a?.b["c"]; + """ + + assert {:ok, %AST.Program{body: [member, call, computed_call, delete_expr]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.MemberExpression{optional: true, computed: false} + } = member + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.MemberExpression{optional: true}} + } = call + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{optional: true, computed: true} + } + } = computed_call + + assert %AST.ExpressionStatement{ + expression: %AST.UnaryExpression{ + operator: "delete", + argument: %AST.MemberExpression{object: %AST.MemberExpression{optional: true}} + } + } = delete_expr + end +end diff --git a/test/js/parser/expressions/parse_number_call_test.exs b/test/js/parser/expressions/parse_number_call_test.exs new file mode 100644 index 000000000..1aa45a307 --- /dev/null +++ b/test/js/parser/expressions/parse_number_call_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ParseNumberCallTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS parseInt and parseFloat call syntax" do + source = """ + parseInt("0_1"); + parseInt("1_0", 8); + parseFloat("Infinity."); + parseFloat("Infinity_"); + """ + + assert {:ok, %AST.Program{body: statements}} = Parser.parse(source) + assert length(statements) == 4 + + assert Enum.all?(statements, fn + %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.Identifier{name: name}} + } + when name in ["parseInt", "parseFloat"] -> + true + + _ -> + false + end) + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + arguments: [%AST.Literal{value: "1_0"}, %AST.Literal{value: 8}] + } + } = Enum.at(statements, 1) + end +end diff --git a/test/js/parser/expressions/prefix_update_member_test.exs b/test/js/parser/expressions/prefix_update_member_test.exs new file mode 100644 index 000000000..637afac47 --- /dev/null +++ b/test/js/parser/expressions/prefix_update_member_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.Expressions.PrefixUpdateMemberTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS prefix update member and index syntax" do + source = """ + ++a.x; + --a[0]; + """ + + assert {:ok, %AST.Program{body: [member_update, index_update]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.UpdateExpression{ + operator: "++", + prefix: true, + argument: %AST.MemberExpression{computed: false} + } + } = member_update + + assert %AST.ExpressionStatement{ + expression: %AST.UpdateExpression{ + operator: "--", + prefix: true, + argument: %AST.MemberExpression{computed: true} + } + } = index_update + end +end diff --git a/test/js/parser/expressions/primitive_equality_test.exs b/test/js/parser/expressions/primitive_equality_test.exs new file mode 100644 index 000000000..a410d712d --- /dev/null +++ b/test/js/parser/expressions/primitive_equality_test.exs @@ -0,0 +1,43 @@ +defmodule QuickBEAM.JS.Parser.Expressions.PrimitiveEqualityTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS primitive equality expression syntax" do + source = """ + null == undefined; + undefined == null; + true == 1; + 0 == false; + "" == 0; + "123" == 123; + "122" != 123; + ({} != "abc"); + """ + + assert {:ok, %AST.Program{body: statements}} = Parser.parse(source) + assert length(statements) == 8 + + assert Enum.all?(statements, fn + %AST.ExpressionStatement{expression: %AST.BinaryExpression{operator: operator}} + when operator in ["==", "!="] -> + true + + _ -> + false + end) + + assert %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{ + left: %AST.Literal{value: nil}, + right: %AST.Identifier{name: "undefined"} + } + } = hd(statements) + + assert %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{left: %AST.ObjectExpression{}, operator: "!="} + } = List.last(statements) + end +end diff --git a/test/js/parser/expressions/proto_method_non_duplicate_test.exs b/test/js/parser/expressions/proto_method_non_duplicate_test.exs new file mode 100644 index 000000000..63daf80ad --- /dev/null +++ b/test/js/parser/expressions/proto_method_non_duplicate_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ProtoMethodNonDuplicateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible __proto__ method and computed property syntax" do + source = + ~S|object = { __proto__: base, __proto__() { return value; }, ["__proto__"]: override };| + + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{expression: %AST.AssignmentExpression{right: object}} + ] + }} = + Parser.parse(source) + + assert %AST.ObjectExpression{ + properties: [ + %AST.Property{ + key: %AST.Identifier{name: "__proto__"}, + method: false, + computed: false + }, + %AST.Property{ + key: %AST.Identifier{name: "__proto__"}, + method: true, + computed: false + }, + %AST.Property{key: %AST.Literal{value: "__proto__"}, method: false, computed: true} + ] + } = object + end +end diff --git a/test/js/parser/expressions/proto_shorthand_non_duplicate_test.exs b/test/js/parser/expressions/proto_shorthand_non_duplicate_test.exs new file mode 100644 index 000000000..83c1d9f66 --- /dev/null +++ b/test/js/parser/expressions/proto_shorthand_non_duplicate_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ProtoShorthandNonDuplicateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible __proto__ shorthand with data property syntax" do + source = "object = { __proto__, __proto__: base };" + + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{expression: %AST.AssignmentExpression{right: object}} + ] + }} = + Parser.parse(source) + + assert %AST.ObjectExpression{ + properties: [ + %AST.Property{key: %AST.Identifier{name: "__proto__"}, shorthand: true}, + %AST.Property{key: %AST.Identifier{name: "__proto__"}, shorthand: false} + ] + } = object + end +end diff --git a/test/js/parser/expressions/reserved_literal_property_name_test.exs b/test/js/parser/expressions/reserved_literal_property_name_test.exs new file mode 100644 index 000000000..096e0679a --- /dev/null +++ b/test/js/parser/expressions/reserved_literal_property_name_test.exs @@ -0,0 +1,48 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ReservedLiteralPropertyNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS boolean and null object property names" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.ObjectExpression{ + properties: [ + %AST.Property{key: %AST.Identifier{name: "null"}}, + %AST.Property{key: %AST.Identifier{name: "true"}}, + %AST.Property{key: %AST.Identifier{name: "false"}} + ] + } + } + ] + } + ] + }} = Parser.parse("var tokenCodes = { null: 1, true: 2, false: 3 };") + end + + test "ports QuickJS boolean and null accessor property names" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.ObjectExpression{ + properties: [ + %AST.Property{kind: :set, key: %AST.Identifier{name: "null"}}, + %AST.Property{kind: :get, key: %AST.Identifier{name: "true"}} + ] + } + } + ] + } + ] + }} = Parser.parse("var tokenCodes = { set null(value) {}, get true() {} };") + end +end diff --git a/test/js/parser/expressions/reserved_property_names_test.exs b/test/js/parser/expressions/reserved_property_names_test.exs new file mode 100644 index 000000000..533bf95d7 --- /dev/null +++ b/test/js/parser/expressions/reserved_property_names_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.Expressions.ReservedPropertyNamesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible reserved object property names" do + source = "object = { default: 1, class: 2, import() { return 3; } };" + + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{expression: %AST.AssignmentExpression{right: object}} + ] + }} = + Parser.parse(source) + + assert %AST.ObjectExpression{ + properties: [ + %AST.Property{ + key: %AST.Identifier{name: "default"}, + value: %AST.Literal{value: 1} + }, + %AST.Property{key: %AST.Identifier{name: "class"}, value: %AST.Literal{value: 2}}, + %AST.Property{ + key: %AST.Identifier{name: "import"}, + method: true, + value: %AST.FunctionExpression{} + } + ] + } = object + end +end diff --git a/test/js/parser/expressions/sequence_test.exs b/test/js/parser/expressions/sequence_test.exs new file mode 100644 index 000000000..8240d6d61 --- /dev/null +++ b/test/js/parser/expressions/sequence_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Expressions.SequenceTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS comma sequence expression syntax used in template tests" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("value = (a, b, c);") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.SequenceExpression{ + expressions: [ + %AST.Identifier{name: "a"}, + %AST.Identifier{name: "b"}, + %AST.Identifier{name: "c"} + ] + } + } + } = statement + end +end diff --git a/test/js/parser/expressions/strict_equality_logical_test.exs b/test/js/parser/expressions/strict_equality_logical_test.exs new file mode 100644 index 000000000..458222b00 --- /dev/null +++ b/test/js/parser/expressions/strict_equality_logical_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.Expressions.StrictEqualityLogicalTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS strict equality logical syntax" do + source = """ + r === 1 && a === 2; + r === 0 && a === 0; + a.x === 2 && a[0] === 2; + """ + + assert {:ok, %AST.Program{body: statements}} = Parser.parse(source) + assert length(statements) == 3 + + assert Enum.all?(statements, fn + %AST.ExpressionStatement{ + expression: %AST.LogicalExpression{ + operator: "&&", + left: %AST.BinaryExpression{operator: "==="}, + right: %AST.BinaryExpression{operator: "==="} + } + } -> + true + + _ -> + false + end) + + assert %AST.ExpressionStatement{ + expression: %AST.LogicalExpression{ + left: %AST.BinaryExpression{left: %AST.MemberExpression{computed: false}}, + right: %AST.BinaryExpression{left: %AST.MemberExpression{computed: true}} + } + } = List.last(statements) + end +end diff --git a/test/js/parser/expressions/string_method_key_test.exs b/test/js/parser/expressions/string_method_key_test.exs new file mode 100644 index 000000000..746f85be5 --- /dev/null +++ b/test/js/parser/expressions/string_method_key_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Expressions.StringMethodKeyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible string object method names" do + source = ~s|object = { "method-name"() { return 1; }, async "async-name"() { return 2; } };| + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{key: %AST.Literal{value: "method-name"}, method: true}, + %AST.Property{ + key: %AST.Literal{value: "async-name"}, + method: true, + value: %AST.FunctionExpression{async: true} + } + ] + } + } + } = statement + end +end diff --git a/test/js/parser/expressions/unary_relational_test.exs b/test/js/parser/expressions/unary_relational_test.exs new file mode 100644 index 000000000..bf83f17a8 --- /dev/null +++ b/test/js/parser/expressions/unary_relational_test.exs @@ -0,0 +1,47 @@ +defmodule QuickBEAM.JS.Parser.Expressions.UnaryRelationalTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS unary and relational expression syntax" do + source = """ + r = ~1; + r = !1; + r = (1 < 2); + r = (2 > 1); + r = ('b' > 'a'); + """ + + assert {:ok, + %AST.Program{body: [bit_not, logical_not, less_than, greater_than, string_compare]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.UnaryExpression{operator: "~"}} + } = bit_not + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.UnaryExpression{operator: "!"}} + } = logical_not + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.BinaryExpression{operator: "<"}} + } = less_than + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.BinaryExpression{operator: ">"}} + } = greater_than + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.BinaryExpression{ + operator: ">", + left: %AST.Literal{value: "b"}, + right: %AST.Literal{value: "a"} + } + } + } = string_compare + end +end diff --git a/test/js/parser/expressions/void_expression_test.exs b/test/js/parser/expressions/void_expression_test.exs new file mode 100644 index 000000000..1f2d335e2 --- /dev/null +++ b/test/js/parser/expressions/void_expression_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Expressions.VoidExpressionTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS void expression syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("value = void 0;") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.UnaryExpression{operator: "void", argument: %AST.Literal{value: 0}} + } + } = statement + end +end diff --git a/test/js/parser/functions/argument_scope_test.exs b/test/js/parser/functions/argument_scope_test.exs new file mode 100644 index 000000000..90bc96abc --- /dev/null +++ b/test/js/parser/functions/argument_scope_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Functions.ArgumentScopeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS argument-scope default and arrow parameter syntax" do + source = """ + f = function(a, b = () => arguments) { return b; }; + f = function(a = eval("1"), b = () => arguments) { return b; }; + f = (a = eval("var c = 1"), probe = () => c) => { var c = 2; }; + f = function f(a = eval("var c = 1"), b = c, probe = () => c) { return probe; }; + f = function f(a = eval("var c = 1"), probe = (d = eval("c")) => d) { return probe; }; + """ + + assert {:ok, %AST.Program{body: statements}} = Parser.parse(source) + assert length(statements) == 5 + + assert Enum.all?(statements, fn + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.FunctionExpression{}} + } -> + true + + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.ArrowFunctionExpression{}} + } -> + true + + _ -> + false + end) + end +end diff --git a/test/js/parser/functions/arguments_object_test.exs b/test/js/parser/functions/arguments_object_test.exs new file mode 100644 index 000000000..73fe0769a --- /dev/null +++ b/test/js/parser/functions/arguments_object_test.exs @@ -0,0 +1,55 @@ +defmodule QuickBEAM.JS.Parser.Functions.ArgumentsObjectTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS arguments object and call syntax" do + source = """ + function f2() { + arguments.length; + arguments[0]; + arguments[1]; + } + f2(1, 3); + function f3(a) { arguments; gc(); } + f3(0); + """ + + assert {:ok, %AST.Program{body: [f2, f2_call, f3, f3_call]}} = Parser.parse(source) + + assert %AST.FunctionDeclaration{ + id: %AST.Identifier{name: "f2"}, + body: %AST.BlockStatement{body: [length_stmt, first_arg_stmt, second_arg_stmt]} + } = f2 + + assert %AST.ExpressionStatement{ + expression: %AST.MemberExpression{property: %AST.Identifier{name: "length"}} + } = length_stmt + + assert %AST.ExpressionStatement{ + expression: %AST.MemberExpression{computed: true, property: %AST.Literal{value: 0}} + } = first_arg_stmt + + assert %AST.ExpressionStatement{ + expression: %AST.MemberExpression{computed: true, property: %AST.Literal{value: 1}} + } = second_arg_stmt + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.Identifier{name: "f2"}, + arguments: [%AST.Literal{value: 1}, %AST.Literal{value: 3}] + } + } = f2_call + + assert %AST.FunctionDeclaration{id: %AST.Identifier{name: "f3"}} = f3 + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.Identifier{name: "f3"}, + arguments: [%AST.Literal{value: 0}] + } + } = f3_call + end +end diff --git a/test/js/parser/functions/arrow_body_comma_test.exs b/test/js/parser/functions/arrow_body_comma_test.exs new file mode 100644 index 000000000..3a5ab29a2 --- /dev/null +++ b/test/js/parser/functions/arrow_body_comma_test.exs @@ -0,0 +1,43 @@ +defmodule QuickBEAM.JS.Parser.Functions.ArrowBodyCommaTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "arrow concise body does not consume object property separators" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.ObjectExpression{ + properties: [ + %AST.Property{ + key: %AST.Identifier{name: "get"}, + value: %AST.ArrowFunctionExpression{body: %AST.Literal{value: "bar"}} + }, + %AST.Property{key: %AST.Identifier{name: "enumerable"}} + ] + } + } + ] + }} = Parser.parse(~s|({ get: () => "bar", enumerable: true });|) + end + + test "arrow expression is lower precedence than comma expression" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.SequenceExpression{ + expressions: [ + %AST.ArrowFunctionExpression{body: %AST.Identifier{name: "a"}}, + %AST.Identifier{name: "b"} + ] + } + } + ] + }} = Parser.parse("x => a, b;") + end +end diff --git a/test/js/parser/functions/arrow_function_length_member_test.exs b/test/js/parser/functions/arrow_function_length_member_test.exs new file mode 100644 index 000000000..dbfe7a1f7 --- /dev/null +++ b/test/js/parser/functions/arrow_function_length_member_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Functions.ArrowFunctionLengthMemberTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS arrow function length member syntax" do + source = """ + ((a, b = 1, c) => {}).length; + (({a, b}) => {}).length; + """ + + assert {:ok, %AST.Program{body: [default_params, pattern_params]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.MemberExpression{ + object: %AST.ArrowFunctionExpression{params: [_, %AST.AssignmentPattern{}, _]}, + property: %AST.Identifier{name: "length"} + } + } = default_params + + assert %AST.ExpressionStatement{ + expression: %AST.MemberExpression{ + object: %AST.ArrowFunctionExpression{params: [%AST.ObjectPattern{}]}, + property: %AST.Identifier{name: "length"} + } + } = pattern_params + end +end diff --git a/test/js/parser/functions/async_arrow_test.exs b/test/js/parser/functions/async_arrow_test.exs new file mode 100644 index 000000000..a47645363 --- /dev/null +++ b/test/js/parser/functions/async_arrow_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Functions.AsyncArrowTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible async arrow syntax" do + source = """ + f = async x => await x; + g = async (a, b = 1) => { return await a; }; + """ + + assert {:ok, %AST.Program{body: [f, g]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ArrowFunctionExpression{ + async: true, + params: [%AST.Identifier{name: "x"}], + body: %AST.AwaitExpression{} + } + } + } = f + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ArrowFunctionExpression{ + async: true, + params: [_, %AST.AssignmentPattern{}], + body: %AST.BlockStatement{} + } + } + } = g + end +end diff --git a/test/js/parser/functions/async_destructured_arrow_test.exs b/test/js/parser/functions/async_destructured_arrow_test.exs new file mode 100644 index 000000000..e5452beca --- /dev/null +++ b/test/js/parser/functions/async_destructured_arrow_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Functions.AsyncDestructuredArrowTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects await expressions in async destructured arrow parameters" do + source = "handler = async ({ value = await fallback() }, ...rest) => value;" + + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "await parameter not allowed in async function")) + end + + test "ports QuickJS-compatible async destructured arrow parameters without await defaults" do + source = "handler = async ({ value = fallback() }, ...rest) => value;" + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ArrowFunctionExpression{ + async: true, + params: [ + %AST.ObjectPattern{ + properties: [%AST.Property{value: %AST.AssignmentPattern{}}] + }, + %AST.RestElement{argument: %AST.Identifier{name: "rest"}} + ], + body: %AST.Identifier{name: "value"} + } + } + } = statement + end +end diff --git a/test/js/parser/functions/async_generator_method_test.exs b/test/js/parser/functions/async_generator_method_test.exs new file mode 100644 index 000000000..e07d0ef3c --- /dev/null +++ b/test/js/parser/functions/async_generator_method_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Functions.AsyncGeneratorMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible async generator method syntax" do + source = """ + value = { async *m() { yield await x; } }; + class C { async *m() { yield await x; } } + """ + + assert {:ok, %AST.Program{body: [object_statement, class_statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{ + value: %AST.FunctionExpression{async: true, generator: true}, + method: true + } + ] + } + } + } = object_statement + + assert %AST.ClassDeclaration{ + body: [ + %AST.MethodDefinition{value: %AST.FunctionExpression{async: true, generator: true}} + ] + } = class_statement + end +end diff --git a/test/js/parser/functions/async_generator_test.exs b/test/js/parser/functions/async_generator_test.exs new file mode 100644 index 000000000..d878ed1fc --- /dev/null +++ b/test/js/parser/functions/async_generator_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Functions.AsyncGeneratorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible async generator function syntax" do + source = """ + async function *g() { yield await value; } + value = async function *h() { yield 1; }; + """ + + assert {:ok, %AST.Program{body: [declaration, expression]}} = Parser.parse(source) + + assert %AST.FunctionDeclaration{id: %AST.Identifier{name: "g"}, async: true, generator: true} = + declaration + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.FunctionExpression{ + id: %AST.Identifier{name: "h"}, + async: true, + generator: true + } + } + } = expression + end +end diff --git a/test/js/parser/functions/async_line_terminator_arrow_test.exs b/test/js/parser/functions/async_line_terminator_arrow_test.exs new file mode 100644 index 000000000..8c1f4fc5b --- /dev/null +++ b/test/js/parser/functions/async_line_terminator_arrow_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Functions.AsyncLineTerminatorArrowTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible async line terminator before arrow syntax" do + source = "async\nx => x;" + + assert {:ok, %AST.Program{body: [async_statement, arrow_statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{expression: %AST.Identifier{name: "async"}} = async_statement + + assert %AST.ExpressionStatement{ + expression: %AST.ArrowFunctionExpression{ + async: false, + params: [%AST.Identifier{name: "x"}] + } + } = arrow_statement + end +end diff --git a/test/js/parser/functions/async_method_test.exs b/test/js/parser/functions/async_method_test.exs new file mode 100644 index 000000000..a5c6cf85e --- /dev/null +++ b/test/js/parser/functions/async_method_test.exs @@ -0,0 +1,49 @@ +defmodule QuickBEAM.JS.Parser.Functions.AsyncMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible async object and class method syntax" do + source = """ + value = { async m() { await x; }, async [name]() { return 1; } }; + class C { async m() { await x; } static async [name]() {} } + """ + + assert {:ok, %AST.Program{body: [object_statement, class_statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{ + value: %AST.FunctionExpression{async: true}, + method: true, + computed: false + }, + %AST.Property{ + value: %AST.FunctionExpression{async: true}, + method: true, + computed: true + } + ] + } + } + } = object_statement + + assert %AST.ClassDeclaration{ + body: [ + %AST.MethodDefinition{ + value: %AST.FunctionExpression{async: true}, + computed: false + }, + %AST.MethodDefinition{ + value: %AST.FunctionExpression{async: true}, + computed: true, + static: true + } + ] + } = class_statement + end +end diff --git a/test/js/parser/functions/await_call_member_test.exs b/test/js/parser/functions/await_call_member_test.exs new file mode 100644 index 000000000..373715a96 --- /dev/null +++ b/test/js/parser/functions/await_call_member_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Functions.AwaitCallMemberTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS await call and member syntax" do + source = """ + async function f() { + await obj.method(arg); + await obj.value; + } + """ + + assert {:ok, %AST.Program{body: [%AST.FunctionDeclaration{async: true, body: body}]}} = + Parser.parse(source) + + assert %AST.BlockStatement{body: [await_call, await_member]} = body + + assert %AST.ExpressionStatement{ + expression: %AST.AwaitExpression{ + argument: %AST.CallExpression{ + callee: %AST.MemberExpression{property: %AST.Identifier{name: "method"}} + } + } + } = await_call + + assert %AST.ExpressionStatement{ + expression: %AST.AwaitExpression{ + argument: %AST.MemberExpression{property: %AST.Identifier{name: "value"}} + } + } = await_member + end +end diff --git a/test/js/parser/functions/destructured_parameters_test.exs b/test/js/parser/functions/destructured_parameters_test.exs new file mode 100644 index 000000000..de38031cc --- /dev/null +++ b/test/js/parser/functions/destructured_parameters_test.exs @@ -0,0 +1,37 @@ +defmodule QuickBEAM.JS.Parser.Functions.DestructuredParametersTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible destructured parameter syntax" do + source = """ + function f({ a, b = 1, ...rest }, [first, ...tail]) { return a; } + ({ a: value = 1 }) => value; + """ + + assert {:ok, %AST.Program{body: [function_decl, arrow_statement]}} = Parser.parse(source) + + assert %AST.FunctionDeclaration{ + params: [ + %AST.ObjectPattern{ + properties: [ + %AST.Property{}, + %AST.Property{value: %AST.AssignmentPattern{}}, + %AST.RestElement{} + ] + }, + %AST.ArrayPattern{elements: [%AST.Identifier{name: "first"}, %AST.RestElement{}]} + ] + } = function_decl + + assert %AST.ExpressionStatement{ + expression: %AST.ArrowFunctionExpression{ + params: [ + %AST.ObjectPattern{properties: [%AST.Property{value: %AST.AssignmentPattern{}}]} + ] + } + } = arrow_statement + end +end diff --git a/test/js/parser/functions/function_call_method_test.exs b/test/js/parser/functions/function_call_method_test.exs new file mode 100644 index 000000000..af2848834 --- /dev/null +++ b/test/js/parser/functions/function_call_method_test.exs @@ -0,0 +1,45 @@ +defmodule QuickBEAM.JS.Parser.Functions.FunctionCallMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS function call method syntax" do + source = """ + f.call(123); + f(12)()[0]; + f(12)()[0].value; + """ + + assert {:ok, %AST.Program{body: [call_method, nested_call_index, nested_call_member]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{ + object: %AST.Identifier{name: "f"}, + property: %AST.Identifier{name: "call"} + }, + arguments: [%AST.Literal{value: 123}] + } + } = call_method + + assert %AST.ExpressionStatement{ + expression: %AST.MemberExpression{ + object: %AST.CallExpression{callee: %AST.CallExpression{}}, + computed: true + } + } = nested_call_index + + assert %AST.ExpressionStatement{ + expression: %AST.MemberExpression{ + object: %AST.MemberExpression{ + object: %AST.CallExpression{callee: %AST.CallExpression{}}, + computed: true + }, + property: %AST.Identifier{name: "value"} + } + } = nested_call_member + end +end diff --git a/test/js/parser/functions/function_expression_keyword_name_test.exs b/test/js/parser/functions/function_expression_keyword_name_test.exs new file mode 100644 index 000000000..562f76dfb --- /dev/null +++ b/test/js/parser/functions/function_expression_keyword_name_test.exs @@ -0,0 +1,56 @@ +defmodule QuickBEAM.JS.Parser.Functions.FunctionExpressionKeywordNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "allows await as a function expression name and parameter in script class static blocks" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ClassDeclaration{ + body: [ + %AST.StaticBlock{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.FunctionExpression{ + id: %AST.Identifier{name: "await"}, + params: [%AST.Identifier{name: "await"}] + } + } + ] + } + ] + } + ] + }} = Parser.parse("class C { static { (function await(await) {}); } }") + end + + test "allows yield as a function expression name inside generator bodies" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.FunctionExpression{ + generator: true, + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.FunctionExpression{ + id: %AST.Identifier{name: "yield"} + } + } + ] + } + } + } + ] + } + ] + }} = Parser.parse("var g = function*() { (function yield() {}); };") + end +end diff --git a/test/js/parser/functions/function_expression_name_test.exs b/test/js/parser/functions/function_expression_name_test.exs new file mode 100644 index 000000000..efcd20c36 --- /dev/null +++ b/test/js/parser/functions/function_expression_name_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.Functions.FunctionExpressionNameTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS function expression name and IIFE syntax" do + source = """ + f = function myfunc() { return myfunc; }; + (function() { return 1; })(); + (() => { return 1; })(); + """ + + assert {:ok, %AST.Program{body: [assignment, function_iife, arrow_iife]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.FunctionExpression{id: %AST.Identifier{name: "myfunc"}} + } + } = assignment + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.FunctionExpression{}} + } = + function_iife + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.ArrowFunctionExpression{}} + } = + arrow_iife + end +end diff --git a/test/js/parser/functions/generator_constructor_test.exs b/test/js/parser/functions/generator_constructor_test.exs new file mode 100644 index 000000000..97212e50f --- /dev/null +++ b/test/js/parser/functions/generator_constructor_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Functions.GeneratorConstructorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS generator constructor try-catch syntax" do + source = """ + function *G() {} + let ex; + try { new G(); } catch (ex_) { ex = ex_; } + """ + + assert {:ok, %AST.Program{body: [generator, declaration, try_statement]}} = + Parser.parse(source) + + assert %AST.FunctionDeclaration{id: %AST.Identifier{name: "G"}, generator: true} = generator + + assert %AST.VariableDeclaration{ + kind: :let, + declarations: [%AST.VariableDeclarator{id: %AST.Identifier{name: "ex"}}] + } = declaration + + assert %AST.TryStatement{ + block: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.NewExpression{callee: %AST.Identifier{name: "G"}} + } + ] + }, + handler: %{param: %AST.Identifier{name: "ex_"}, body: %AST.BlockStatement{}} + } = try_statement + end +end diff --git a/test/js/parser/functions/generator_declaration_yield_name_test.exs b/test/js/parser/functions/generator_declaration_yield_name_test.exs new file mode 100644 index 000000000..f3a30ea7c --- /dev/null +++ b/test/js/parser/functions/generator_declaration_yield_name_test.exs @@ -0,0 +1,10 @@ +defmodule QuickBEAM.JS.Parser.Functions.GeneratorDeclarationYieldNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows yield as generator declaration name outside strict mode" do + assert {:ok, %AST.Program{}} = Parser.parse("function* yield() { yield 1; }") + end +end diff --git a/test/js/parser/functions/generator_method_test.exs b/test/js/parser/functions/generator_method_test.exs new file mode 100644 index 000000000..b7b2d7882 --- /dev/null +++ b/test/js/parser/functions/generator_method_test.exs @@ -0,0 +1,40 @@ +defmodule QuickBEAM.JS.Parser.Functions.GeneratorMethodTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible generator method syntax" do + source = """ + value = { *m() { yield x; } }; + class C { *m() { yield x; } static *[name]() {} } + """ + + assert {:ok, %AST.Program{body: [object_statement, class_statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{value: %AST.FunctionExpression{generator: true}, method: true} + ] + } + } + } = object_statement + + assert %AST.ClassDeclaration{ + body: [ + %AST.MethodDefinition{ + value: %AST.FunctionExpression{generator: true}, + computed: false + }, + %AST.MethodDefinition{ + value: %AST.FunctionExpression{generator: true}, + computed: true, + static: true + } + ] + } = class_statement + end +end diff --git a/test/js/parser/functions/new_target_test.exs b/test/js/parser/functions/new_target_test.exs new file mode 100644 index 000000000..061036a24 --- /dev/null +++ b/test/js/parser/functions/new_target_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Functions.NewTargetTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible new.target meta-property syntax" do + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{body: %AST.BlockStatement{body: [return_statement]}} + ] + }} = + Parser.parse("function f() { return new.target; }") + + assert %AST.ReturnStatement{ + argument: %AST.MetaProperty{ + meta: %AST.Identifier{name: "new"}, + property: %AST.Identifier{name: "target"} + } + } = return_statement + end +end diff --git a/test/js/parser/functions/non_prologue_use_strict_test.exs b/test/js/parser/functions/non_prologue_use_strict_test.exs new file mode 100644 index 000000000..aa8ff9bcf --- /dev/null +++ b/test/js/parser/functions/non_prologue_use_strict_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.Functions.NonPrologueUseStrictTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible non-prologue use strict string syntax" do + source = ~S|function f(a, a) { setup(); "use strict"; return a; }| + + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + params: [%AST.Identifier{name: "a"}, %AST.Identifier{name: "a"}], + body: body + } + ] + }} = + Parser.parse(source) + + assert %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.Identifier{name: "setup"}} + }, + %AST.ExpressionStatement{expression: %AST.Literal{value: "use strict"}}, + %AST.ReturnStatement{} + ] + } = body + end +end diff --git a/test/js/parser/functions/rest_spread_call_test.exs b/test/js/parser/functions/rest_spread_call_test.exs new file mode 100644 index 000000000..6320a576b --- /dev/null +++ b/test/js/parser/functions/rest_spread_call_test.exs @@ -0,0 +1,38 @@ +defmodule QuickBEAM.JS.Parser.Functions.RestSpreadCallTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible rest parameter and spread call syntax" do + source = """ + function f(...args) { return args; } + f(1, ...args); + ((...args) => args)(...[1, 2]); + """ + + assert {:ok, %AST.Program{body: [function_decl, call_statement, arrow_call]}} = + Parser.parse(source) + + assert %AST.FunctionDeclaration{ + params: [%AST.RestElement{argument: %AST.Identifier{name: "args"}}] + } = function_decl + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + arguments: [ + %AST.Literal{value: 1}, + %AST.SpreadElement{argument: %AST.Identifier{name: "args"}} + ] + } + } = call_statement + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.ArrowFunctionExpression{params: [%AST.RestElement{}]}, + arguments: [%AST.SpreadElement{argument: %AST.ArrayExpression{}}] + } + } = arrow_call + end +end diff --git a/test/js/parser/functions/return_line_terminator_test.exs b/test/js/parser/functions/return_line_terminator_test.exs new file mode 100644 index 000000000..027d44b23 --- /dev/null +++ b/test/js/parser/functions/return_line_terminator_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.Functions.ReturnLineTerminatorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible return ASI line terminator syntax" do + source = """ + function f() { + return + value; + } + """ + + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + body: %AST.BlockStatement{body: [return_statement, expression_statement]} + } + ] + }} = + Parser.parse(source) + + assert %AST.ReturnStatement{argument: nil} = return_statement + + assert %AST.ExpressionStatement{expression: %AST.Identifier{name: "value"}} = + expression_statement + end +end diff --git a/test/js/parser/functions/sloppy_yield_division_test.exs b/test/js/parser/functions/sloppy_yield_division_test.exs new file mode 100644 index 000000000..3d00e1f89 --- /dev/null +++ b/test/js/parser/functions/sloppy_yield_division_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Functions.SloppyYieldDivisionTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "tokenizes sloppy yield followed by slash as division when no regexp terminator exists" do + assert {:ok, %AST.Program{}} = + Parser.parse("var yield = 12, a = 3; yield /a; yieldParsedAsIdentifier = true;") + end + + test "still tokenizes generator yield followed by a regexp literal" do + assert {:ok, %AST.Program{}} = Parser.parse("function* g() { received = yield/abc/i; }") + end +end diff --git a/test/js/parser/functions/spread_trailing_argument_test.exs b/test/js/parser/functions/spread_trailing_argument_test.exs new file mode 100644 index 000000000..23c2659e6 --- /dev/null +++ b/test/js/parser/functions/spread_trailing_argument_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Functions.SpreadTrailingArgumentTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible spread argument trailing comma syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("f(...args,);") + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.Identifier{name: "f"}, + arguments: [%AST.SpreadElement{argument: %AST.Identifier{name: "args"}}] + } + } = statement + end +end diff --git a/test/js/parser/functions/static_block_await_test.exs b/test/js/parser/functions/static_block_await_test.exs new file mode 100644 index 000000000..8f73837db --- /dev/null +++ b/test/js/parser/functions/static_block_await_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Functions.StaticBlockAwaitTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows await references in non-async function expressions inside static blocks" do + for source <- [ + "class C { static { (function (x = await) { fromBody = await; })(); } }", + "class C { static { (function * (x = await) { fromBody = await; })().next(); } }" + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/functions/strict_function_declaration_params_test.exs b/test/js/parser/functions/strict_function_declaration_params_test.exs new file mode 100644 index 000000000..1fd3e284c --- /dev/null +++ b/test/js/parser/functions/strict_function_declaration_params_test.exs @@ -0,0 +1,11 @@ +defmodule QuickBEAM.JS.Parser.Functions.StrictFunctionDeclarationParamsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects restricted parameter names in function declarations under script strict mode" do + assert {:error, %AST.Program{}, errors} = Parser.parse("\"use strict\"; function f(eval) {}") + assert Enum.any?(errors, &(&1.message == "restricted parameter name in strict mode")) + end +end diff --git a/test/js/parser/functions/this_assignment_test.exs b/test/js/parser/functions/this_assignment_test.exs new file mode 100644 index 000000000..43e6f2fa6 --- /dev/null +++ b/test/js/parser/functions/this_assignment_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Functions.ThisAssignmentTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS constructor this-assignment syntax" do + source = """ + function F(x) { + this.x = x; + } + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.FunctionDeclaration{ + id: %AST.Identifier{name: "F"}, + params: [%AST.Identifier{name: "x"}], + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.MemberExpression{ + object: %AST.Identifier{name: "this"}, + property: %AST.Identifier{name: "x"} + }, + right: %AST.Identifier{name: "x"} + } + } + ] + } + } = statement + end +end diff --git a/test/js/parser/functions/trailing_parameter_comma_test.exs b/test/js/parser/functions/trailing_parameter_comma_test.exs new file mode 100644 index 000000000..d303ac7a7 --- /dev/null +++ b/test/js/parser/functions/trailing_parameter_comma_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Functions.TrailingParameterCommaTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible trailing parameter comma syntax" do + source = """ + function f(a, b,) { return a; } + value = (a, b,) => a; + """ + + assert {:ok, %AST.Program{body: [function_decl, arrow_statement]}} = Parser.parse(source) + + assert %AST.FunctionDeclaration{ + params: [%AST.Identifier{name: "a"}, %AST.Identifier{name: "b"}] + } = function_decl + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ArrowFunctionExpression{ + params: [%AST.Identifier{name: "a"}, %AST.Identifier{name: "b"}] + } + } + } = arrow_statement + end +end diff --git a/test/js/parser/functions/yield_delegate_test.exs b/test/js/parser/functions/yield_delegate_test.exs new file mode 100644 index 000000000..be1c53b54 --- /dev/null +++ b/test/js/parser/functions/yield_delegate_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Functions.YieldDelegateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS generator delegated yield syntax" do + source = """ + function *g(iterable) { + yield *iterable; + yield; + } + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.FunctionDeclaration{ + generator: true, + params: [%AST.Identifier{name: "iterable"}], + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.YieldExpression{ + delegate: true, + argument: %AST.Identifier{name: "iterable"} + } + }, + %AST.ExpressionStatement{ + expression: %AST.YieldExpression{delegate: false, argument: nil} + } + ] + } + } = statement + end +end diff --git a/test/js/parser/functions/yield_identifier_context_test.exs b/test/js/parser/functions/yield_identifier_context_test.exs new file mode 100644 index 000000000..a486ee013 --- /dev/null +++ b/test/js/parser/functions/yield_identifier_context_test.exs @@ -0,0 +1,83 @@ +defmodule QuickBEAM.JS.Parser.Functions.YieldIdentifierContextTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "allows yield as a sloppy binding and arrow parameter" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [%AST.VariableDeclarator{id: %AST.Identifier{name: "yield"}}] + }, + %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.ArrowFunctionExpression{ + params: [%AST.Identifier{name: "yield"}] + } + } + ] + } + ] + }} = Parser.parse("var yield; var af = yield => 1;") + end + + test "parses yield expressions inside generator function bodies" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.CallExpression{ + callee: %AST.FunctionExpression{ + generator: true, + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.AssignmentExpression{ + left: %AST.ArrayPattern{ + elements: [ + %AST.AssignmentPattern{ + right: %AST.YieldExpression{} + } + ] + } + } + } + } + ] + } + } + } + } + ] + } + ] + }} = Parser.parse("var iter = (function*() { result = [x = yield] = vals; })();") + end + + test "treats yield as an identifier in non-generator function bodies" do + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + body: %AST.BlockStatement{ + body: [ + %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{id: %AST.Identifier{name: "yield"}} + ] + } + ] + } + } + ] + }} = Parser.parse("function f() { var yield = 1; }") + end +end diff --git a/test/js/parser/functions/yield_line_terminator_test.exs b/test/js/parser/functions/yield_line_terminator_test.exs new file mode 100644 index 000000000..8eb9147a6 --- /dev/null +++ b/test/js/parser/functions/yield_line_terminator_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.Functions.YieldLineTerminatorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible yield ASI line terminator syntax" do + source = """ + function *f() { + yield + value; + } + """ + + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + generator: true, + body: %AST.BlockStatement{body: [yield_statement, expression_statement]} + } + ] + }} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.YieldExpression{argument: nil, delegate: false} + } = yield_statement + + assert %AST.ExpressionStatement{expression: %AST.Identifier{name: "value"}} = + expression_statement + end +end diff --git a/test/js/parser/functions/yield_regexp_test.exs b/test/js/parser/functions/yield_regexp_test.exs new file mode 100644 index 000000000..1b05be042 --- /dev/null +++ b/test/js/parser/functions/yield_regexp_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Functions.YieldRegexpTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS yield regexp expression syntax" do + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.YieldExpression{argument: %AST.Literal{raw: "/abc/i"}} + } + } + ] + }, + generator: true + } + ] + }} = Parser.parse("function* g() { received = yield/abc/i; }") + end +end diff --git a/test/js/parser/functions/yield_spread_object_test.exs b/test/js/parser/functions/yield_spread_object_test.exs new file mode 100644 index 000000000..ea7e8d497 --- /dev/null +++ b/test/js/parser/functions/yield_spread_object_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Functions.YieldSpreadObjectTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "parses yield expressions inside object spread without consuming sibling properties" do + source = + "async function *g() { yield { ...yield yield, ...(function(arg) { var yield = arg; return {...yield}; }(yield)), ...yield }; }" + + assert {:ok, + %AST.Program{ + body: [%AST.FunctionDeclaration{body: %AST.BlockStatement{body: [statement]}}] + }} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.YieldExpression{ + argument: %AST.ObjectExpression{properties: properties} + } + } = statement + + assert length(properties) == 3 + end +end diff --git a/test/js/parser/functions/yield_without_rhs_test.exs b/test/js/parser/functions/yield_without_rhs_test.exs new file mode 100644 index 000000000..5362821cc --- /dev/null +++ b/test/js/parser/functions/yield_without_rhs_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Functions.YieldWithoutRhsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS yield without RHS before conditional colon" do + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{ + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.ConditionalExpression{ + consequent: %AST.YieldExpression{argument: nil}, + alternate: %AST.YieldExpression{argument: nil} + } + } + ] + }, + generator: true + } + ] + }} = Parser.parse("function* g() { (yield) ? yield : yield; }") + end +end diff --git a/test/js/parser/literals/array_spread_elision_test.exs b/test/js/parser/literals/array_spread_elision_test.exs new file mode 100644 index 000000000..f01f3e873 --- /dev/null +++ b/test/js/parser/literals/array_spread_elision_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.Literals.ArraySpreadElisionTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS array spread elision syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("x = [ ...[ , ] ];") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ArrayExpression{ + elements: [%AST.SpreadElement{argument: %AST.ArrayExpression{elements: [nil]}}] + } + } + } = statement + end +end diff --git a/test/js/parser/literals/array_spread_trailing_comma_test.exs b/test/js/parser/literals/array_spread_trailing_comma_test.exs new file mode 100644 index 000000000..f81ff2e98 --- /dev/null +++ b/test/js/parser/literals/array_spread_trailing_comma_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Literals.ArraySpreadTrailingCommaTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "preserves trailing comma after array spread" do + assert {:ok, %AST.Program{body: [%AST.ExpressionStatement{expression: array}]}} = + Parser.parse("[...items,];") + + assert %AST.ArrayExpression{elements: [%AST.SpreadElement{}, nil]} = array + end +end diff --git a/test/js/parser/literals/basics_test.exs b/test/js/parser/literals/basics_test.exs new file mode 100644 index 000000000..56265cebc --- /dev/null +++ b/test/js/parser/literals/basics_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Literals.BasicsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "parses object and array literals" do + assert {:ok, %AST.Program{body: [statement]}} = + Parser.parse("value = { a: [1, 2], b, c() { return 3; } };") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{properties: [a, b, c]} + } + } = statement + + assert %AST.Property{ + key: %AST.Identifier{name: "a"}, + value: %AST.ArrayExpression{elements: [_, _]} + } = a + + assert %AST.Property{key: %AST.Identifier{name: "b"}, shorthand: true} = b + + assert %AST.Property{ + key: %AST.Identifier{name: "c"}, + method: true, + value: %AST.FunctionExpression{} + } = c + end +end diff --git a/test/js/parser/literals/bigint_literal_test.exs b/test/js/parser/literals/bigint_literal_test.exs new file mode 100644 index 000000000..7cd45f5cc --- /dev/null +++ b/test/js/parser/literals/bigint_literal_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Literals.BigIntLiteralTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible bigint literal syntax" do + source = """ + decimal = 123n; + hex = 0xfn; + binary = 0b101n; + octal = 0o77n; + """ + + assert {:ok, %AST.Program{body: statements}} = Parser.parse(source) + + assert Enum.map(statements, fn + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.Literal{value: value, raw: raw}} + } -> + {value, raw} + end) == [{123, "123n"}, {15, "0xfn"}, {5, "0b101n"}, {63, "0o77n"}] + end + + test "ports QuickJS invalid decimal bigint syntax" do + assert {:error, %AST.Program{}, errors} = Parser.parse("value = 1.2n;") + assert Enum.any?(errors, &(&1.message == "invalid bigint literal")) + end +end diff --git a/test/js/parser/literals/bigint_separator_test.exs b/test/js/parser/literals/bigint_separator_test.exs new file mode 100644 index 000000000..2dcfddf66 --- /dev/null +++ b/test/js/parser/literals/bigint_separator_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Literals.BigIntSeparatorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible bigint numeric separator syntax" do + source = """ + decimal = 1_000n; + hex = 0xff_ffn; + binary = 0b1010_0101n; + """ + + assert {:ok, %AST.Program{body: statements}} = Parser.parse(source) + + assert Enum.map(statements, fn + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.Literal{value: value, raw: raw}} + } -> + {value, raw} + end) == [{1000, "1_000n"}, {65_535, "0xff_ffn"}, {165, "0b1010_0101n"}] + end +end diff --git a/test/js/parser/literals/block_comment_line_separator_test.exs b/test/js/parser/literals/block_comment_line_separator_test.exs new file mode 100644 index 000000000..066a5bff1 --- /dev/null +++ b/test/js/parser/literals/block_comment_line_separator_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Literals.BlockCommentLineSeparatorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS ASI after block comments with unicode line separators" do + for separator <- [<<0x2028::utf8>>, <<0x2029::utf8>>] do + source = ~s|''/*#{separator}*/''| + assert {:ok, %AST.Program{body: statements}} = Parser.parse(source) + assert length(statements) == 2 + end + end +end diff --git a/test/js/parser/literals/braced_surrogate_escape_test.exs b/test/js/parser/literals/braced_surrogate_escape_test.exs new file mode 100644 index 000000000..1e10aedb1 --- /dev/null +++ b/test/js/parser/literals/braced_surrogate_escape_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Literals.BracedSurrogateEscapeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports SpiderMonkey braced unicode string escapes for surrogate code points" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{expression: %AST.Literal{value: <<0xD83E::16>>}}, + %AST.ExpressionStatement{expression: %AST.Literal{value: <<0xDD21::16>>}} + ] + }} = Parser.parse(~S|"\u{d83e}"; "\u{dd21}";|) + end +end diff --git a/test/js/parser/literals/computed_object_accessor_test.exs b/test/js/parser/literals/computed_object_accessor_test.exs new file mode 100644 index 000000000..8d7393c4d --- /dev/null +++ b/test/js/parser/literals/computed_object_accessor_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Literals.ComputedObjectAccessorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible computed object accessor syntax" do + source = """ + value = { + get [name]() { return 1; }, + set [name](value) { this.value = value; } + }; + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{key: %AST.Identifier{name: "name"}, kind: :get, computed: true}, + %AST.Property{key: %AST.Identifier{name: "name"}, kind: :set, computed: true} + ] + } + } + } = statement + end +end diff --git a/test/js/parser/literals/computed_property_test.exs b/test/js/parser/literals/computed_property_test.exs new file mode 100644 index 000000000..417be611c --- /dev/null +++ b/test/js/parser/literals/computed_property_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Literals.ComputedPropertyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible computed object property syntax" do + source = ~s|value = { [name]: 1, [method]() { return 2; } };| + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{key: %AST.Identifier{name: "name"}, computed: true}, + %AST.Property{ + key: %AST.Identifier{name: "method"}, + computed: true, + method: true + } + ] + } + } + } = statement + end +end diff --git a/test/js/parser/literals/contextual_property_access_test.exs b/test/js/parser/literals/contextual_property_access_test.exs new file mode 100644 index 000000000..8a14d7abe --- /dev/null +++ b/test/js/parser/literals/contextual_property_access_test.exs @@ -0,0 +1,43 @@ +defmodule QuickBEAM.JS.Parser.Literals.ContextualPropertyAccessTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS contextual object property access syntax" do + source = """ + a = { x: 1, if: 2, async: 3 }; + a.if === 2; + a.async === 3; + """ + + assert {:ok, %AST.Program{body: [assignment, if_access, async_access]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{key: %AST.Identifier{name: "x"}}, + %AST.Property{key: %AST.Identifier{name: "if"}}, + %AST.Property{key: %AST.Identifier{name: "async"}} + ] + } + } + } = assignment + + assert %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{ + left: %AST.MemberExpression{property: %AST.Identifier{name: "if"}}, + operator: "===" + } + } = if_access + + assert %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{ + left: %AST.MemberExpression{property: %AST.Identifier{name: "async"}}, + operator: "===" + } + } = async_access + end +end diff --git a/test/js/parser/literals/division_after_brace_test.exs b/test/js/parser/literals/division_after_brace_test.exs new file mode 100644 index 000000000..a21d125aa --- /dev/null +++ b/test/js/parser/literals/division_after_brace_test.exs @@ -0,0 +1,43 @@ +defmodule QuickBEAM.JS.Parser.Literals.DivisionAfterBraceTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "parses division after object literals and function expressions" do + source = + "value = ({ valueOf: function() { return 1; } } / 1); other = (function(){} / function(){});" + + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.BinaryExpression{operator: "/"} + } + }, + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.BinaryExpression{operator: "/"} + } + } + ] + }} = Parser.parse(source) + end + + test "keeps regexp literals after block statements" do + assert {:ok, + %AST.Program{ + body: [ + %AST.IfStatement{}, + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{object: %AST.Literal{value: %{pattern: "abc"}}} + } + } + ] + }} = Parser.parse("if (ok) {}\n/abc/.test(value);") + end +end diff --git a/test/js/parser/literals/division_after_contextual_keyword_test.exs b/test/js/parser/literals/division_after_contextual_keyword_test.exs new file mode 100644 index 000000000..b79743f84 --- /dev/null +++ b/test/js/parser/literals/division_after_contextual_keyword_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.Literals.DivisionAfterContextualKeywordTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "tokenizes slash after contextual keyword identifiers as division" do + assert {:ok, + %AST.Program{ + body: [ + %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.BinaryExpression{ + operator: "/", + left: %AST.BinaryExpression{ + operator: "/", + left: %AST.Identifier{name: "instance"}, + right: %AST.Identifier{name: "of"} + }, + right: %AST.Identifier{name: "g"} + } + } + ] + } + ] + }} = Parser.parse("var notRegExp = instance/of/g;") + end +end diff --git a/test/js/parser/literals/double_dot_numeric_member_access_test.exs b/test/js/parser/literals/double_dot_numeric_member_access_test.exs new file mode 100644 index 000000000..849edd333 --- /dev/null +++ b/test/js/parser/literals/double_dot_numeric_member_access_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Literals.DoubleDotNumericMemberAccessTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS integer literal member access with double dot" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{ + object: %AST.Literal{value: 1.0, raw: "1."}, + property: %AST.Identifier{name: "toString"} + } + } + } + ] + }} = Parser.parse("1..toString();") + end +end diff --git a/test/js/parser/literals/exponent_separator_test.exs b/test/js/parser/literals/exponent_separator_test.exs new file mode 100644 index 000000000..37b1a72e1 --- /dev/null +++ b/test/js/parser/literals/exponent_separator_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Literals.ExponentSeparatorTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible exponent numeric separator syntax" do + source = """ + value = 1.5e1_0; + other = 1e+1_2; + """ + + assert {:ok, %AST.Program{body: [first, second]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.Literal{value: 15_000_000_000.0, raw: "1.5e1_0"} + } + } = first + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.Literal{value: 1.0e12, raw: "1e+1_2"} + } + } = second + end +end diff --git a/test/js/parser/literals/hex_numeric_separator_test.exs b/test/js/parser/literals/hex_numeric_separator_test.exs new file mode 100644 index 000000000..822349fb8 --- /dev/null +++ b/test/js/parser/literals/hex_numeric_separator_test.exs @@ -0,0 +1,12 @@ +defmodule QuickBEAM.JS.Parser.Literals.HexNumericSeparatorTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows hex numeric separators with e-like digits" do + for source <- ["0xa_a;", "0xe_e;", "0xA_A;", "0xE_En;"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/literals/literal_test.exs b/test/js/parser/literals/literal_test.exs new file mode 100644 index 000000000..6c18466e6 --- /dev/null +++ b/test/js/parser/literals/literal_test.exs @@ -0,0 +1,47 @@ +defmodule QuickBEAM.JS.Parser.Literals.LiteralTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS object literal contextual get/set/async parsing" do + source = """ + var x = 0, get = 1, set = 2; async = 3; + a = { get: 2, set: 3, async: 4, get a(){ return this.get} }; + a = { x, get, set, async }; + """ + + assert {:ok, %AST.Program{body: [_vars, _assign_async, assign_object, assign_shorthand]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{properties: [get_prop, set_prop, async_prop, getter]} + } + } = assign_object + + assert %AST.Property{key: %AST.Identifier{name: "get"}, kind: :init} = get_prop + assert %AST.Property{key: %AST.Identifier{name: "set"}, kind: :init} = set_prop + assert %AST.Property{key: %AST.Identifier{name: "async"}, kind: :init} = async_prop + assert %AST.Property{key: %AST.Identifier{name: "a"}, kind: :get} = getter + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{properties: shorthand} + } + } = assign_shorthand + + assert Enum.map(shorthand, & &1.shorthand) == [true, true, true, true] + end + + test "ports QuickJS array spread literals" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("x = [1, 2, ...[3, 4]];") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ArrayExpression{elements: [_, _, %AST.SpreadElement{}]} + } + } = statement + end +end diff --git a/test/js/parser/literals/number_literal_member_test.exs b/test/js/parser/literals/number_literal_member_test.exs new file mode 100644 index 000000000..4f30a7793 --- /dev/null +++ b/test/js/parser/literals/number_literal_member_test.exs @@ -0,0 +1,16 @@ +defmodule QuickBEAM.JS.Parser.Literals.NumberLiteralMemberTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS number literal member access syntax" do + for source <- ["0.1.a;", "0x1.a;", "0b1.a;", "0o1.a;"] do + assert {:ok, %AST.Program{body: [%AST.ExpressionStatement{expression: expression}]}} = + Parser.parse(source) + + assert %AST.MemberExpression{property: %AST.Identifier{name: "a"}} = expression + end + end +end diff --git a/test/js/parser/literals/number_literal_test.exs b/test/js/parser/literals/number_literal_test.exs new file mode 100644 index 000000000..520cc8017 --- /dev/null +++ b/test/js/parser/literals/number_literal_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Literals.NumberLiteralTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS numeric separator parsing" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("value = 1_0;") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.Literal{value: 10}} + } = statement + end + + test "ports QuickJS invalid legacy numeric separator cases" do + for source <- ["0_0", "00_0", "01_0", "08_0", "09_0"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid numeric separator")) + end + end + + test "ports QuickJS invalid dotted number literal syntax" do + assert {:error, %AST.Program{}, errors} = Parser.parse("0.a") + assert Enum.any?(errors, &(&1.message == "invalid number literal")) + end + + test "keeps valid dotted number literal syntax" do + assert {:ok, + %AST.Program{body: [%AST.ExpressionStatement{expression: %AST.Literal{value: value}}]}} = + Parser.parse("0.;") + + assert value == 0.0 + end +end diff --git a/test/js/parser/literals/numeric_literal_diagnostics_test.exs b/test/js/parser/literals/numeric_literal_diagnostics_test.exs new file mode 100644 index 000000000..000db743f --- /dev/null +++ b/test/js/parser/literals/numeric_literal_diagnostics_test.exs @@ -0,0 +1,25 @@ +defmodule QuickBEAM.JS.Parser.Literals.NumericLiteralDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects numeric literals followed by identifier starts" do + assert {:error, %AST.Program{}, errors} = Parser.parse("3in []") + assert Enum.any?(errors, &(&1.message == "invalid number literal")) + end + + test "rejects legacy-octal-like bigint literals" do + for source <- ["00n;", "01n;", "07n;", "08n;", "09n;", "012348n;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid number literal")) + end + end + + test "rejects decimal separators adjacent to dot or exponent" do + for source <- [".0_e1", "1.0_e1", "1._0", "1_.0", "1e_1", "1e+_1"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid number literal")) + end + end +end diff --git a/test/js/parser/literals/numeric_member_access_test.exs b/test/js/parser/literals/numeric_member_access_test.exs new file mode 100644 index 000000000..3f94a4aac --- /dev/null +++ b/test/js/parser/literals/numeric_member_access_test.exs @@ -0,0 +1,47 @@ +defmodule QuickBEAM.JS.Parser.Literals.NumericMemberAccessTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "accepts hexadecimal literals ending in exponent letters" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + arguments: [ + %AST.Literal{value: 0x7FFFFFFE, raw: "0x7ffffffe"} + ] + } + } + ] + }} = Parser.parse("assert(0x7ffffffe);") + end + + test "parses legacy leading-zero integer member access" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + arguments: [ + %AST.MemberExpression{ + object: %AST.Literal{raw: "01"}, + property: %AST.Identifier{name: "a"}, + computed: false + } + ] + } + } + ] + }} = Parser.parse("assert(01.a);") + end + + test "keeps zero-dot identifier syntax invalid" do + assert {:error, _program, errors} = Parser.parse("0.a;") + assert Enum.any?(errors, &(&1.message == "invalid number literal")) + end +end diff --git a/test/js/parser/literals/object_spread_test.exs b/test/js/parser/literals/object_spread_test.exs new file mode 100644 index 000000000..094055620 --- /dev/null +++ b/test/js/parser/literals/object_spread_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Literals.ObjectSpreadTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible object spread literal syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("value = { a: 1, ...rest, b };") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ObjectExpression{ + properties: [ + %AST.Property{key: %AST.Identifier{name: "a"}}, + %AST.SpreadElement{argument: %AST.Identifier{name: "rest"}}, + %AST.Property{key: %AST.Identifier{name: "b"}, shorthand: true} + ] + } + } + } = statement + end +end diff --git a/test/js/parser/literals/prefixed_bigint_exponent_letter_test.exs b/test/js/parser/literals/prefixed_bigint_exponent_letter_test.exs new file mode 100644 index 000000000..dc291a786 --- /dev/null +++ b/test/js/parser/literals/prefixed_bigint_exponent_letter_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.Literals.PrefixedBigIntExponentLetterTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "accepts prefixed BigInt literals containing exponent letters as digits" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{ + operator: "+", + left: %AST.UnaryExpression{ + operator: "-", + argument: %AST.Literal{raw: "0xFEDCBA9876543210n"} + }, + right: %AST.UnaryExpression{ + operator: "-", + argument: %AST.Literal{raw: "0x1FDB97530ECA86420n"} + } + } + } + ] + }} = Parser.parse("-0xFEDCBA9876543210n + -0x1FDB97530ECA86420n;") + end + + test "keeps decimal BigInt exponent forms invalid" do + assert {:error, _program, errors} = Parser.parse("1e2n;") + assert Enum.any?(errors, &(&1.message == "invalid bigint literal")) + end +end diff --git a/test/js/parser/literals/reg_exp_member_test.exs b/test/js/parser/literals/reg_exp_member_test.exs new file mode 100644 index 000000000..606bb17f4 --- /dev/null +++ b/test/js/parser/literals/reg_exp_member_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegExpMemberTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS regexp literal member and return syntax" do + source = """ + function f() { return /abc/g; } + /abc/.test(value); + """ + + assert {:ok, %AST.Program{body: [function_decl, call_statement]}} = Parser.parse(source) + + assert %AST.FunctionDeclaration{ + body: %AST.BlockStatement{ + body: [ + %AST.ReturnStatement{ + argument: %AST.Literal{value: %{pattern: "abc", flags: "g"}} + } + ] + } + } = function_decl + + assert %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{ + object: %AST.Literal{value: %{pattern: "abc", flags: ""}}, + property: %AST.Identifier{name: "test"} + }, + arguments: [%AST.Identifier{name: "value"}] + } + } = call_statement + end +end diff --git a/test/js/parser/literals/reg_exp_test.exs b/test/js/parser/literals/reg_exp_test.exs new file mode 100644 index 000000000..6ab7f5c25 --- /dev/null +++ b/test/js/parser/literals/reg_exp_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegExpTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS regexp skip after assignment in array pattern-like syntax" do + for source <- ["[a, b = /abc\\(/] = [1];", "[a, b =/abc\\(/] = [2];"] do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.ArrayPattern{ + elements: [_, %AST.AssignmentPattern{right: regex}] + } + } + } = statement + + assert %AST.Literal{value: %{pattern: "abc\\(", flags: ""}} = regex + end + end +end diff --git a/test/js/parser/literals/regexp_after_assignment_test.exs b/test/js/parser/literals/regexp_after_assignment_test.exs new file mode 100644 index 000000000..11ee4f60d --- /dev/null +++ b/test/js/parser/literals/regexp_after_assignment_test.exs @@ -0,0 +1,38 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpAfterAssignmentTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible regexp literals after assignment operators" do + source = """ + value = /assign/; + value ||= /or/; + value ??= /nullish/; + """ + + assert {:ok, %AST.Program{body: [assign, or_assign, nullish_assign]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + operator: "=", + right: %AST.Literal{value: %{pattern: "assign"}} + } + } = assign + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + operator: "||=", + right: %AST.Literal{value: %{pattern: "or"}} + } + } = or_assign + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + operator: "??=", + right: %AST.Literal{value: %{pattern: "nullish"}} + } + } = nullish_assign + end +end diff --git a/test/js/parser/literals/regexp_after_control_keywords_test.exs b/test/js/parser/literals/regexp_after_control_keywords_test.exs new file mode 100644 index 000000000..506f57d4a --- /dev/null +++ b/test/js/parser/literals/regexp_after_control_keywords_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpAfterControlKeywordsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible regexp literals after control-flow keywords" do + source = """ + if (/ok/.test(value)) { matched = true; } + while (/again/.test(next())) { break; } + switch (value) { case /case/: break; } + """ + + assert {:ok, %AST.Program{body: [if_statement, while_statement, switch_statement]}} = + Parser.parse(source) + + assert %AST.IfStatement{ + test: %AST.CallExpression{ + callee: %AST.MemberExpression{object: %AST.Literal{value: %{pattern: "ok"}}} + } + } = if_statement + + assert %AST.WhileStatement{ + test: %AST.CallExpression{ + callee: %AST.MemberExpression{object: %AST.Literal{value: %{pattern: "again"}}} + } + } = while_statement + + assert %AST.SwitchStatement{ + cases: [%AST.SwitchCase{test: %AST.Literal{value: %{pattern: "case"}}}] + } = switch_statement + end +end diff --git a/test/js/parser/literals/regexp_after_operators_test.exs b/test/js/parser/literals/regexp_after_operators_test.exs new file mode 100644 index 000000000..a78482e08 --- /dev/null +++ b/test/js/parser/literals/regexp_after_operators_test.exs @@ -0,0 +1,45 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpAfterOperatorsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible regexp literals after expression operators" do + source = """ + value = condition ? /yes/ : /no/; + other = left || /fallback/; + more = left && /right/; + """ + + assert {:ok, %AST.Program{body: [conditional, logical_or, logical_and]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ConditionalExpression{ + consequent: %AST.Literal{value: %{pattern: "yes"}}, + alternate: %AST.Literal{value: %{pattern: "no"}} + } + } + } = conditional + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.LogicalExpression{ + operator: "||", + right: %AST.Literal{value: %{pattern: "fallback"}} + } + } + } = logical_or + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.LogicalExpression{ + operator: "&&", + right: %AST.Literal{value: %{pattern: "right"}} + } + } + } = logical_and + end +end diff --git a/test/js/parser/literals/regexp_braced_unicode_surrogate_test.exs b/test/js/parser/literals/regexp_braced_unicode_surrogate_test.exs new file mode 100644 index 000000000..f1db3a28b --- /dev/null +++ b/test/js/parser/literals/regexp_braced_unicode_surrogate_test.exs @@ -0,0 +1,12 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpBracedUnicodeSurrogateTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows braced unicode escapes with surrogate code points in unicode regexps" do + for source <- ["/\\u{D83D}/u;", "/\\u{DC38}/u;", "/\\u{D83D}\\u{DC38}+/u;"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/literals/regexp_character_class_test.exs b/test/js/parser/literals/regexp_character_class_test.exs new file mode 100644 index 000000000..8cb593847 --- /dev/null +++ b/test/js/parser/literals/regexp_character_class_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpCharacterClassTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible regexp character class slash syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("pattern = /[/\\]a-z]+/gi;") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.Literal{ + value: %{pattern: "[/\\]a-z]+", flags: "gi"}, + raw: "/[/\\]a-z]+/gi" + } + } + } = statement + end +end diff --git a/test/js/parser/literals/regexp_class_range_diagnostics_test.exs b/test/js/parser/literals/regexp_class_range_diagnostics_test.exs new file mode 100644 index 000000000..47833451a --- /dev/null +++ b/test/js/parser/literals/regexp_class_range_diagnostics_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpClassRangeDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects unicode class ranges involving character classes" do + for source <- ["/[\\d-a]/u;", "/[%-\\d]/u;", "/[\\s-\\d]/u;", "/[--\\d]/u;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid class range")) + end + end + + test "allows simple unicode class ranges" do + assert {:ok, %AST.Program{}} = Parser.parse("/[a-z]/u;") + end +end diff --git a/test/js/parser/literals/regexp_decimal_escape_diagnostics_test.exs b/test/js/parser/literals/regexp_decimal_escape_diagnostics_test.exs new file mode 100644 index 000000000..ef5068848 --- /dev/null +++ b/test/js/parser/literals/regexp_decimal_escape_diagnostics_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpDecimalEscapeDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects unicode-mode decimal escapes without matching captures" do + for source <- ["/\\1/u;", "/\\8/u;", "/(.)\\2/u;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "back reference out of range in regular expression") + ) + end + end + + test "allows unicode-mode decimal backreferences with matching captures" do + assert {:ok, %AST.Program{}} = Parser.parse("/(.)\\1/u;") + end +end diff --git a/test/js/parser/literals/regexp_flag_diagnostics_test.exs b/test/js/parser/literals/regexp_flag_diagnostics_test.exs new file mode 100644 index 000000000..731e93922 --- /dev/null +++ b/test/js/parser/literals/regexp_flag_diagnostics_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpFlagDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects invalid and duplicate regexp flags" do + for source <- ["/./G;", "/./gig;", "/./uv;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid regular expression flags")) + end + end + + test "allows supported regexp flags" do + assert {:ok, %AST.Program{}} = Parser.parse("/./dgimsuy;") + end +end diff --git a/test/js/parser/literals/regexp_flags_diagnostics_test.exs b/test/js/parser/literals/regexp_flags_diagnostics_test.exs new file mode 100644 index 000000000..8255bd0ef --- /dev/null +++ b/test/js/parser/literals/regexp_flags_diagnostics_test.exs @@ -0,0 +1,14 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpFlagsDiagnosticsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS invalid regexp flag diagnostics" do + for source <- [~S(pattern = /./uv;)] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid regular expression flags")) + end + end +end diff --git a/test/js/parser/literals/regexp_hex_escape_test.exs b/test/js/parser/literals/regexp_hex_escape_test.exs new file mode 100644 index 000000000..f2adae374 --- /dev/null +++ b/test/js/parser/literals/regexp_hex_escape_test.exs @@ -0,0 +1,12 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpHexEscapeTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows hex character escapes in unicode regexp literals" do + for source <- ["/\\xDF/u;", "/(\\x6B)+/iu;"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/literals/regexp_line_terminator_diagnostics_test.exs b/test/js/parser/literals/regexp_line_terminator_diagnostics_test.exs new file mode 100644 index 000000000..09a351874 --- /dev/null +++ b/test/js/parser/literals/regexp_line_terminator_diagnostics_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpLineTerminatorDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects escaped line terminators in regexp literals" do + for source <- ["/\\\n/", "/a\\\n/", "/\\\u2028/", "/a\\\u2029/"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "unterminated regular expression literal")) + end + end +end diff --git a/test/js/parser/literals/regexp_modifier_group_diagnostics_test.exs b/test/js/parser/literals/regexp_modifier_group_diagnostics_test.exs new file mode 100644 index 000000000..da2e4accc --- /dev/null +++ b/test/js/parser/literals/regexp_modifier_group_diagnostics_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpModifierGroupDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects invalid regexp modifier groups" do + for source <- [ + "/(?y:a)/;", + "/(?ii:a)/;", + "/(?s-s:a)/;", + "/(?-:a)/;", + "/(?ms-i)/;", + "/(?\\u006d:a)/;" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid group")) + end + end + + test "allows valid regexp modifier and assertion groups" do + for source <- ["/(?i:a)/;", "/(?im-s:a)/;", "/(?:a)/;", "/(?=a)/;", "/(?a)/;"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/literals/regexp_named_capture_test.exs b/test/js/parser/literals/regexp_named_capture_test.exs new file mode 100644 index 000000000..16c24a254 --- /dev/null +++ b/test/js/parser/literals/regexp_named_capture_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpNamedCaptureTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible regexp named capture syntax" do + assert {:ok, %AST.Program{body: [statement]}} = + Parser.parse("pattern = /(?[a-z]+)\\k/u;") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.Literal{value: %{pattern: "(?[a-z]+)\\k", flags: "u"}} + } + } = statement + end +end diff --git a/test/js/parser/literals/regexp_named_group_diagnostics_test.exs b/test/js/parser/literals/regexp_named_group_diagnostics_test.exs new file mode 100644 index 000000000..f1091439a --- /dev/null +++ b/test/js/parser/literals/regexp_named_group_diagnostics_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpNamedGroupDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects invalid regexp named capture group names" do + for source <- ["/(?<>a)/;", "/(?<1>a)/;", "/(?a)/;", "/(?a)(?b)/;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message in ["invalid group name", "duplicate group name"])) + end + end + + test "rejects dangling named backreferences in unicode mode" do + assert {:error, %AST.Program{}, errors} = Parser.parse("/\\k/u;") + assert Enum.any?(errors, &(&1.message == "group name not defined")) + end + + test "allows Annex B identity escape fallback for named backreference syntax" do + assert {:ok, %AST.Program{}} = Parser.parse("/\\k/;") + end + + test "allows valid named captures and backreferences" do + assert {:ok, %AST.Program{}} = Parser.parse("/(?a)\\k/u;") + end +end diff --git a/test/js/parser/literals/regexp_named_group_edge_diagnostics_test.exs b/test/js/parser/literals/regexp_named_group_edge_diagnostics_test.exs new file mode 100644 index 000000000..36f374825 --- /dev/null +++ b/test/js/parser/literals/regexp_named_group_edge_diagnostics_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpNamedGroupEdgeDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects non-identifier regexp group names" do + for source <- ["/(?<❤>a)/;", "/(?<𐒤>a)/;", "/(?<$❞>a)/;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid group name")) + end + end + + test "rejects incomplete named backreferences" do + assert {:error, %AST.Program{}, errors} = Parser.parse("/(?.)\\k/;") + assert Enum.any?(errors, &(&1.message == "expecting group name")) + end +end diff --git a/test/js/parser/literals/regexp_property_class_range_diagnostics_test.exs b/test/js/parser/literals/regexp_property_class_range_diagnostics_test.exs new file mode 100644 index 000000000..00e819b02 --- /dev/null +++ b/test/js/parser/literals/regexp_property_class_range_diagnostics_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpPropertyClassRangeDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects unicode property escapes in class ranges" do + for source <- [~S|/[\p{ASCII}-A]/u;|, ~S|/[A-\P{ASCII}]/u;|] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid class range")) + end + end +end diff --git a/test/js/parser/literals/regexp_property_escape_alias_test.exs b/test/js/parser/literals/regexp_property_escape_alias_test.exs new file mode 100644 index 000000000..05d4fde52 --- /dev/null +++ b/test/js/parser/literals/regexp_property_escape_alias_test.exs @@ -0,0 +1,42 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpPropertyEscapeAliasTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "accepts Unknown unicode script aliases" do + for source <- [ + ~S(pattern = /\p{Script=Unknown}/u;), + ~S(pattern = /\p{scx=Unknown}/u;), + ~S(pattern = /\p{Script=Zzzz}/u;), + ~S(pattern = /\p{scx=Zzzz}/u;) + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "ports QuickJS unknown unicode property names" do + for source <- [~S(pattern = /\p{RGI_Emoji}/u;), ~S(pattern = /\p{InGreek}/u;)] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "unknown unicode property name")) + end + end + + test "preserves v-flag unicode string properties" do + for source <- [~S(pattern = /\p{RGI_Emoji}/v;), ~S(pattern = /\p{Emoji_Keycap_Sequence}/v;)] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "preserves valid aliases from vendored QuickJS unicode tables" do + for source <- [ + ~S(pattern = /\p{Script=Greek}/u;), + ~S(pattern = /\p{Script=Grek}/u;), + ~S(pattern = /\p{gc=Lu}/u;), + ~S(pattern = /\p{Alpha}/u;) + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/literals/regexp_property_escape_diagnostics_test.exs b/test/js/parser/literals/regexp_property_escape_diagnostics_test.exs new file mode 100644 index 000000000..c110c3f78 --- /dev/null +++ b/test/js/parser/literals/regexp_property_escape_diagnostics_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpPropertyEscapeDiagnosticsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS malformed unicode property escape diagnostics" do + for source <- [~S(pattern = /\p/u;), ~S(pattern = /\p{Script/u;), ~S(pattern = /\p{}/u;)] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert [_ | _] = errors + end + end + + test "ports QuickJS binary property with explicit value diagnostics" do + for source <- [~S(pattern = /\p{ASCII=Yes}/u;), ~S(pattern = /\P{Alphabetic=No}/u;)] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "unknown unicode property name")) + end + end + + test "ports QuickJS escaped property escape repetition diagnostics" do + assert {:error, %AST.Program{}, errors} = Parser.parse(~S(pattern = /\\p{ASCII}/u;)) + assert Enum.any?(errors, &(&1.message == "invalid repetition count")) + end + + test "preserves valid unicode property escapes" do + for source <- [~S(pattern = /\p{Script=Greek}/u;), ~S(pattern = /\p{ASCII}/u;)] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/literals/regexp_quantifier_diagnostics_test.exs b/test/js/parser/literals/regexp_quantifier_diagnostics_test.exs new file mode 100644 index 000000000..5173b3ad2 --- /dev/null +++ b/test/js/parser/literals/regexp_quantifier_diagnostics_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpQuantifierDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects quantifiers without atoms" do + for source <- ["/?/;", "/{2}/;", "/{2,3}/;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "nothing to repeat")) + end + end + + test "rejects quantified lookbehinds and unicode-mode lookaheads" do + for source <- ["/.(?<=.)?/;", "/.(?\\a)/u;", + "/\\c0/u;", + "/{/u;" + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid escape sequence in regular expression")) + end + end + + test "allows valid unicode regexp escapes" do + for source <- ["/\\u{10FFFF}/u;", "/\\n/u;", "/\\./u;", "/\\cA/u;", "/a{2}/u;"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/literals/regexp_unicode_group_name_test.exs b/test/js/parser/literals/regexp_unicode_group_name_test.exs new file mode 100644 index 000000000..c86e84c16 --- /dev/null +++ b/test/js/parser/literals/regexp_unicode_group_name_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpUnicodeGroupNameTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "allows unicode and escaped unicode regexp group names" do + for source <- [ + ~S|/(?<𝓓𝓸𝓰>dog)\k<𝓓𝓸𝓰>/u;|, + ~S|/(?<π>a)/u;|, + ~S|/(?<ಠ_ಠ>a)/u;|, + ~S|/(?<狸>fox).*(?<狗>dog)/u;|, + ~S|/(?.)/u;|, + ~S|/(?.)/u;|, + ~S|/(?<\u{1d5b0}\u{1d5a1}\u{1d5a5}>qbf)/u;| + ] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end + + test "allows quantified atoms inside lookbehind assertions" do + for source <- [~S|/(?<=(\w){3})def/;|, ~S|/(?<=((?:b\d{2})+))c/;|] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/literals/regexp_unicode_property_test.exs b/test/js/parser/literals/regexp_unicode_property_test.exs new file mode 100644 index 000000000..d95fc8976 --- /dev/null +++ b/test/js/parser/literals/regexp_unicode_property_test.exs @@ -0,0 +1,18 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpUnicodePropertyTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible regexp unicode property syntax" do + assert {:ok, %AST.Program{body: [statement]}} = + Parser.parse(~S(pattern = /\p{Script=Greek}+/u;)) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.Literal{value: %{pattern: ~S(\p{Script=Greek}+), flags: "u"}} + } + } = statement + end +end diff --git a/test/js/parser/literals/regexp_unicode_v_flag_test.exs b/test/js/parser/literals/regexp_unicode_v_flag_test.exs new file mode 100644 index 000000000..afaf6abd4 --- /dev/null +++ b/test/js/parser/literals/regexp_unicode_v_flag_test.exs @@ -0,0 +1,13 @@ +defmodule QuickBEAM.JS.Parser.Literals.RegexpUnicodeVFlagTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible non-ASCII v-flag regexp literals" do + for source <- ["pattern = /𠮷/v;", "pattern = /[👨‍👩‍👧‍👦]/v;"] do + assert {:ok, %AST.Program{}} = Parser.parse(source) + end + end +end diff --git a/test/js/parser/literals/string_argument_punctuation_value_test.exs b/test/js/parser/literals/string_argument_punctuation_value_test.exs new file mode 100644 index 000000000..54cedcc2b --- /dev/null +++ b/test/js/parser/literals/string_argument_punctuation_value_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Literals.StringArgumentPunctuationValueTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "does not treat string argument values as delimiters" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + arguments: [ + %AST.Literal{raw: "'\\51'"}, + %AST.Literal{value: ")"}, + %AST.Literal{raw: "'\\\\51'"} + ] + } + } + ] + }} = Parser.parse("assert.sameValue('\\51', '\\x29', '\\\\51');") + end +end diff --git a/test/js/parser/literals/string_crlf_continuation_test.exs b/test/js/parser/literals/string_crlf_continuation_test.exs new file mode 100644 index 000000000..b22337fc2 --- /dev/null +++ b/test/js/parser/literals/string_crlf_continuation_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Literals.StringCrlfContinuationTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible string CRLF line continuation syntax" do + source = "value = \"a\\\r\nb\";" + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.Literal{value: "ab"}} + } = statement + end +end diff --git a/test/js/parser/literals/string_escape_test.exs b/test/js/parser/literals/string_escape_test.exs new file mode 100644 index 000000000..70508d1da --- /dev/null +++ b/test/js/parser/literals/string_escape_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Literals.StringEscapeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible string escape syntax" do + source = ~s|value = "\\x61\\u0062\\u{63}";| + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.Literal{value: "abc"}} + } = statement + end +end diff --git a/test/js/parser/literals/string_json_superset_test.exs b/test/js/parser/literals/string_json_superset_test.exs new file mode 100644 index 000000000..41a4614fd --- /dev/null +++ b/test/js/parser/literals/string_json_superset_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Literals.StringJSONSupersetTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS U+2028 and U+2029 inside string literals" do + line_separator = <<0x2028::utf8>> + paragraph_separator = <<0x2029::utf8>> + + source = + IO.iodata_to_binary([?", line_separator, ?", ?;, ?\n, ?", paragraph_separator, ?", ?;]) + + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{expression: %AST.Literal{value: ^line_separator}}, + %AST.ExpressionStatement{expression: %AST.Literal{value: ^paragraph_separator}} + ] + }} = Parser.parse(source) + end +end diff --git a/test/js/parser/literals/string_line_continuation_test.exs b/test/js/parser/literals/string_line_continuation_test.exs new file mode 100644 index 000000000..788fee12c --- /dev/null +++ b/test/js/parser/literals/string_line_continuation_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Literals.StringLineContinuationTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible string line continuation syntax" do + source = "value = \"a\\\nb\";" + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.Literal{value: "ab"}} + } = statement + end +end diff --git a/test/js/parser/literals/string_null_escape_test.exs b/test/js/parser/literals/string_null_escape_test.exs new file mode 100644 index 000000000..6ab9e2d74 --- /dev/null +++ b/test/js/parser/literals/string_null_escape_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Literals.StringNullEscapeTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible string null escape syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(~S(value = "a\0b";)) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{right: %AST.Literal{value: <>}} + } = statement + end +end diff --git a/test/js/parser/literals/string_operator_value_test.exs b/test/js/parser/literals/string_operator_value_test.exs new file mode 100644 index 000000000..204129e23 --- /dev/null +++ b/test/js/parser/literals/string_operator_value_test.exs @@ -0,0 +1,41 @@ +defmodule QuickBEAM.JS.Parser.Literals.StringOperatorValueTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "parses strings whose values match update operators as literals" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + arguments: [ + %AST.Literal{value: "++"}, + %AST.Literal{value: "--"} + ] + } + } + ] + }} = Parser.parse(~s|assert("++", "--");|) + end + + test "parses strings whose values match unary keywords as literals" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + arguments: [ + %AST.Literal{value: "delete"}, + %AST.Literal{value: "typeof"}, + %AST.Literal{value: "void"} + ] + } + } + ] + }} = Parser.parse(~s|assert("delete", "typeof", "void");|) + end +end diff --git a/test/js/parser/literals/string_punctuation_expression_test.exs b/test/js/parser/literals/string_punctuation_expression_test.exs new file mode 100644 index 000000000..84c4e6138 --- /dev/null +++ b/test/js/parser/literals/string_punctuation_expression_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Literals.StringPunctuationExpressionTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "parses string literals whose values look like grouping punctuation" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ThrowStatement{ + argument: %AST.NewExpression{ + arguments: [ + %AST.BinaryExpression{ + operator: "+", + left: %AST.BinaryExpression{ + operator: "+", + left: %AST.Literal{value: "("} + }, + right: %AST.Literal{value: ")"} + } + ] + } + } + ] + }} = Parser.parse(~s|throw new Test262Error("(" + value + ")");|) + end +end diff --git a/test/js/parser/literals/string_punctuator_value_test.exs b/test/js/parser/literals/string_punctuator_value_test.exs new file mode 100644 index 000000000..5aa9ffd5a --- /dev/null +++ b/test/js/parser/literals/string_punctuator_value_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Literals.StringPunctuatorValueTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "parses strings whose values match private-name punctuators as literals" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{ + operator: "+", + left: %AST.Literal{value: "#"}, + right: %AST.Identifier{name: "i"} + } + } + ] + }} = Parser.parse(~s|"#" + i;|) + end +end diff --git a/test/js/parser/literals/string_strict_escape_diagnostics_test.exs b/test/js/parser/literals/string_strict_escape_diagnostics_test.exs new file mode 100644 index 000000000..76e2491e7 --- /dev/null +++ b/test/js/parser/literals/string_strict_escape_diagnostics_test.exs @@ -0,0 +1,21 @@ +defmodule QuickBEAM.JS.Parser.Literals.StringStrictEscapeDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects non-octal decimal escapes in strict code" do + for source <- [ + ~S|"use strict"; "\8";|, + ~S|"use strict"; "\9";|, + ~S|function f() { "\8"; "use strict"; }| + ] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + + assert Enum.any?( + errors, + &(&1.message == "octal escape sequence not allowed in strict mode") + ) + end + end +end diff --git a/test/js/parser/literals/surrogate_escape_test.exs b/test/js/parser/literals/surrogate_escape_test.exs new file mode 100644 index 000000000..be89bfd5d --- /dev/null +++ b/test/js/parser/literals/surrogate_escape_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Literals.SurrogateEscapeTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "accepts lone surrogate fixed unicode escapes in strings" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.BinaryExpression{ + operator: ">", + left: %AST.Literal{}, + right: %AST.Literal{} + } + } + ] + }} = Parser.parse(~S|"\uDC00" > "\uD800";|) + end +end diff --git a/test/js/parser/literals/tagged_template_test.exs b/test/js/parser/literals/tagged_template_test.exs new file mode 100644 index 000000000..608de9ab6 --- /dev/null +++ b/test/js/parser/literals/tagged_template_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.Literals.TaggedTemplateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible tagged template syntax" do + source = """ + value = tag`hello ${name}`; + value = object.tag`hello`; + """ + + assert {:ok, %AST.Program{body: [plain_tag, member_tag]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.TaggedTemplateExpression{ + tag: %AST.Identifier{name: "tag"}, + quasi: %AST.TemplateLiteral{ + quasis: [ + %AST.TemplateElement{value: "hello "}, + %AST.TemplateElement{value: "", tail: true} + ], + expressions: [%AST.Identifier{name: "name"}] + } + } + } + } = plain_tag + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.TaggedTemplateExpression{ + tag: %AST.MemberExpression{property: %AST.Identifier{name: "tag"}} + } + } + } = member_tag + end +end diff --git a/test/js/parser/literals/template_destructuring_test.exs b/test/js/parser/literals/template_destructuring_test.exs new file mode 100644 index 000000000..6cd6bc429 --- /dev/null +++ b/test/js/parser/literals/template_destructuring_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Literals.TemplateDestructuringTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS template skip destructuring declaration shape" do + assert {:ok, %AST.Program{body: [statement]}} = + Parser.parse(~s|var { b = `${a + `a${a}` }baz` } = {};|) + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + id: %AST.ObjectPattern{ + properties: [ + %AST.Property{ + key: %AST.Identifier{name: "b"}, + value: %AST.AssignmentPattern{ + right: %AST.TemplateLiteral{ + quasis: [ + %AST.TemplateElement{value: ""}, + %AST.TemplateElement{value: "baz", tail: true} + ], + expressions: [%AST.BinaryExpression{right: %AST.TemplateLiteral{}}] + } + } + } + ] + }, + init: %AST.ObjectExpression{properties: []} + } + ] + } = statement + end +end diff --git a/test/js/parser/literals/template_escape_diagnostics_test.exs b/test/js/parser/literals/template_escape_diagnostics_test.exs new file mode 100644 index 000000000..e07dfb215 --- /dev/null +++ b/test/js/parser/literals/template_escape_diagnostics_test.exs @@ -0,0 +1,17 @@ +defmodule QuickBEAM.JS.Parser.Literals.TemplateEscapeDiagnosticsTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "rejects invalid escapes in untagged templates" do + for source <- ["`\\u0`;", "`\\x0`;", "`\\8`;", "`\\00`;", "`\\u{Z}`;", "`\\u{10FFFFF}`;"] do + assert {:error, %AST.Program{}, errors} = Parser.parse(source) + assert Enum.any?(errors, &(&1.message == "invalid template escape sequence")) + end + end + + test "keeps invalid escapes inside tagged templates as syntax" do + assert {:ok, %AST.Program{}} = Parser.parse("tag`\\u0`;") + end +end diff --git a/test/js/parser/literals/template_expression_escape_test.exs b/test/js/parser/literals/template_expression_escape_test.exs new file mode 100644 index 000000000..2116b0543 --- /dev/null +++ b/test/js/parser/literals/template_expression_escape_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Literals.TemplateExpressionEscapeTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "does not validate string escapes inside template expressions as template escapes" do + assert {:ok, %AST.Program{}} = Parser.parse(~S|`${'\07'}`;|) + end + + test "rejects string octal escapes inside template expressions in strict mode" do + assert {:error, %AST.Program{}, errors} = Parser.parse(~S|"use strict"; `${'\07'}`;|) + assert Enum.any?(errors, &(&1.message == "octal escape sequence not allowed in strict mode")) + end + + test "continues rejecting legacy octal escapes in untagged template quasis" do + assert {:error, %AST.Program{}, errors} = Parser.parse(~S|`\07`;|) + assert Enum.any?(errors, &(&1.message == "invalid template escape sequence")) + end +end diff --git a/test/js/parser/literals/template_literal_ast_test.exs b/test/js/parser/literals/template_literal_ast_test.exs new file mode 100644 index 000000000..628951d73 --- /dev/null +++ b/test/js/parser/literals/template_literal_ast_test.exs @@ -0,0 +1,48 @@ +defmodule QuickBEAM.JS.Parser.Literals.TemplateLiteralASTTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible template literal quasis and expressions" do + assert {:ok, %AST.Program{body: [statement]}} = + Parser.parse("value = `hello ${name}, ${count + 1}!`;") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.TemplateLiteral{ + quasis: [ + %AST.TemplateElement{value: "hello ", tail: false}, + %AST.TemplateElement{value: ", ", tail: false}, + %AST.TemplateElement{value: "!", tail: true} + ], + expressions: [ + %AST.Identifier{name: "name"}, + %AST.BinaryExpression{ + operator: "+", + left: %AST.Identifier{name: "count"}, + right: %AST.Literal{value: 1} + } + ] + } + } + } = statement + end + + test "ports QuickJS-compatible tagged template literal AST" do + assert {:ok, %AST.Program{body: [%AST.ExpressionStatement{expression: tagged}]}} = + Parser.parse("tag`hello ${name}`;") + + assert %AST.TaggedTemplateExpression{ + tag: %AST.Identifier{name: "tag"}, + quasi: %AST.TemplateLiteral{ + quasis: [ + %AST.TemplateElement{value: "hello "}, + %AST.TemplateElement{value: "", tail: true} + ], + expressions: [%AST.Identifier{name: "name"}] + } + } = tagged + end +end diff --git a/test/js/parser/literals/template_no_substitution_test.exs b/test/js/parser/literals/template_no_substitution_test.exs new file mode 100644 index 000000000..8e3b17728 --- /dev/null +++ b/test/js/parser/literals/template_no_substitution_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Literals.TemplateNoSubstitutionTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible no-substitution template literal AST" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{expression: %AST.AssignmentExpression{right: template}} + ] + }} = + Parser.parse("value = `plain text`;") + + assert %AST.TemplateLiteral{ + quasis: [%AST.TemplateElement{value: "plain text", raw: "plain text", tail: true}], + expressions: [] + } = template + end +end diff --git a/test/js/parser/literals/template_test.exs b/test/js/parser/literals/template_test.exs new file mode 100644 index 000000000..039f4fd1d --- /dev/null +++ b/test/js/parser/literals/template_test.exs @@ -0,0 +1,47 @@ +defmodule QuickBEAM.JS.Parser.Literals.TemplateTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS template and tagged template parsing" do + assert {:ok, %AST.Program{body: [plain, tagged]}} = + Parser.parse("a = `abc${b}d`; String.raw `abc${b}d`;") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.TemplateLiteral{ + quasis: [ + %AST.TemplateElement{value: "abc"}, + %AST.TemplateElement{value: "d", tail: true} + ], + expressions: [%AST.Identifier{name: "b"}] + } + } + } = plain + + assert %AST.ExpressionStatement{ + expression: %AST.TaggedTemplateExpression{quasi: %AST.TemplateLiteral{}} + } = + tagged + end + + test "ports QuickJS nested template skip parsing" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("var b = `${a + `a${a}` }baz`;") + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.TemplateLiteral{ + quasis: [ + %AST.TemplateElement{value: ""}, + %AST.TemplateElement{value: "baz", tail: true} + ], + expressions: [%AST.BinaryExpression{right: %AST.TemplateLiteral{}}] + } + } + ] + } = statement + end +end diff --git a/test/js/parser/literals/unicode_whitespace_after_regexp_test.exs b/test/js/parser/literals/unicode_whitespace_after_regexp_test.exs new file mode 100644 index 000000000..f009f60d9 --- /dev/null +++ b/test/js/parser/literals/unicode_whitespace_after_regexp_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Literals.UnicodeWhitespaceAfterRegexpTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "treats ECMAScript unicode spaces as trivia after regexp literals" do + for whitespace <- [ + "\u00A0", + "\u1680", + "\u2000", + "\u2001", + "\u2002", + "\u2003", + "\u2004", + "\u2005", + "\u2006", + "\u2007", + "\u2008", + "\u2009", + "\u200A", + "\u202F", + "\u205F", + "\u3000", + "\uFEFF" + ] do + assert {:ok, %AST.Program{}} = Parser.parse("/a/" <> whitespace <> ";") + end + end +end diff --git a/test/js/parser/literals/unicode_whitespace_identifier_boundary_test.exs b/test/js/parser/literals/unicode_whitespace_identifier_boundary_test.exs new file mode 100644 index 000000000..8ca4b8fe1 --- /dev/null +++ b/test/js/parser/literals/unicode_whitespace_identifier_boundary_test.exs @@ -0,0 +1,15 @@ +defmodule QuickBEAM.JS.Parser.Literals.UnicodeWhitespaceIdentifierBoundaryTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "treats NBSP as whitespace between tokens but not inside escaped identifiers" do + assert {:ok, %AST.Program{}} = Parser.parse("\u00A0var x\u00A0= 2\u00A0;") + assert {:error, %AST.Program{}, [_ | _]} = Parser.parse("var\\u00A0x;") + end + + test "rejects Mongolian vowel separator between identifier parts" do + assert {:error, %AST.Program{}, [_ | _]} = Parser.parse("var\u180Efoo;") + end +end diff --git a/test/js/parser/literals/unicode_whitespace_test.exs b/test/js/parser/literals/unicode_whitespace_test.exs new file mode 100644 index 000000000..f06bde612 --- /dev/null +++ b/test/js/parser/literals/unicode_whitespace_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Literals.UnicodeWhitespaceTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "skips non-ascii ECMAScript whitespace and line separators" do + source = + "assert.sameValue(x\t\v\f \u00A0\n\r\u2028\u2029+=\t\v\f \u00A0\n\r\u2028\u2029-1, -2);" + + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + arguments: [ + %AST.AssignmentExpression{operator: "+="}, + %AST.UnaryExpression{operator: "-"} + ] + } + } + ] + }} = Parser.parse(source) + end +end diff --git a/test/js/parser/modules/anonymous_default_class_extends_test.exs b/test/js/parser/modules/anonymous_default_class_extends_test.exs new file mode 100644 index 000000000..82ff65b1a --- /dev/null +++ b/test/js/parser/modules/anonymous_default_class_extends_test.exs @@ -0,0 +1,36 @@ +defmodule QuickBEAM.JS.Parser.Modules.AnonymousDefaultClassExtendsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible anonymous default class extends syntax" do + source = "export default class extends Base { constructor() { super(); } }" + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.ClassDeclaration{ + id: nil, + super_class: %AST.Identifier{name: "Base"}, + body: [ + %AST.MethodDefinition{ + kind: :constructor, + key: %AST.Identifier{name: "constructor"}, + value: %AST.FunctionExpression{ + body: %AST.BlockStatement{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{callee: %AST.Identifier{name: "super"}} + } + ] + } + } + } + ] + } + } = statement + end +end diff --git a/test/js/parser/modules/anonymous_default_export_test.exs b/test/js/parser/modules/anonymous_default_export_test.exs new file mode 100644 index 000000000..15ff59db7 --- /dev/null +++ b/test/js/parser/modules/anonymous_default_export_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.Modules.AnonymousDefaultExportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible anonymous default function and class export syntax" do + source = """ + export default function() { return 1; } + export default async function() { return 2; } + export default class {} + """ + + assert {:ok, %AST.Program{body: [function_export, async_function_export, class_export]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.FunctionDeclaration{id: nil, async: false} + } = + function_export + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.FunctionDeclaration{id: nil, async: true} + } = + async_function_export + + assert %AST.ExportDefaultDeclaration{declaration: %AST.ClassDeclaration{id: nil}} = + class_export + end +end diff --git a/test/js/parser/modules/anonymous_default_generator_export_test.exs b/test/js/parser/modules/anonymous_default_generator_export_test.exs new file mode 100644 index 000000000..50dc17fae --- /dev/null +++ b/test/js/parser/modules/anonymous_default_generator_export_test.exs @@ -0,0 +1,25 @@ +defmodule QuickBEAM.JS.Parser.Modules.AnonymousDefaultGeneratorExportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible anonymous default generator export syntax" do + source = """ + export default function*() { yield 1; } + export default async function*() { yield await value; } + """ + + assert {:ok, %AST.Program{body: [generator_export, async_generator_export]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.FunctionDeclaration{id: nil, async: false, generator: true} + } = generator_export + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.FunctionDeclaration{id: nil, async: true, generator: true} + } = async_generator_export + end +end diff --git a/test/js/parser/modules/async_function_export_test.exs b/test/js/parser/modules/async_function_export_test.exs new file mode 100644 index 000000000..ff1182557 --- /dev/null +++ b/test/js/parser/modules/async_function_export_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Modules.AsyncFunctionExportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible async function export syntax" do + source = """ + export async function f() {} + export default async function g() {} + export default async function *h() {} + """ + + assert {:ok, %AST.Program{body: [named_export, default_async, default_async_generator]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportNamedDeclaration{ + declaration: %AST.FunctionDeclaration{async: true, generator: false} + } = named_export + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.FunctionDeclaration{async: true, generator: false} + } = default_async + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.FunctionDeclaration{async: true, generator: true} + } = default_async_generator + end +end diff --git a/test/js/parser/modules/default_arrow_export_test.exs b/test/js/parser/modules/default_arrow_export_test.exs new file mode 100644 index 000000000..bdca9a0db --- /dev/null +++ b/test/js/parser/modules/default_arrow_export_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.Modules.DefaultArrowExportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible default arrow export syntax" do + source = """ + export default async x => x; + export default (x) => x; + """ + + assert {:ok, %AST.Program{body: [async_arrow, arrow]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.ArrowFunctionExpression{ + async: true, + params: [%AST.Identifier{name: "x"}] + } + } = async_arrow + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.ArrowFunctionExpression{ + async: false, + params: [%AST.Identifier{name: "x"}] + } + } = arrow + end +end diff --git a/test/js/parser/modules/default_await_export_test.exs b/test/js/parser/modules/default_await_export_test.exs new file mode 100644 index 000000000..ee486e1a1 --- /dev/null +++ b/test/js/parser/modules/default_await_export_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Modules.DefaultAwaitExportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible default await export syntax" do + source = ~s|export default await import("dep");| + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.AwaitExpression{ + argument: %AST.CallExpression{ + callee: %AST.Identifier{name: "import"}, + arguments: [%AST.Literal{value: "dep"}] + } + } + } = statement + end +end diff --git a/test/js/parser/modules/default_export_test.exs b/test/js/parser/modules/default_export_test.exs new file mode 100644 index 000000000..404656187 --- /dev/null +++ b/test/js/parser/modules/default_export_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Modules.DefaultExportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible default export syntax" do + source = """ + export default function f() { return 1; } + export default class C {} + export default value + 1; + """ + + assert {:ok, %AST.Program{body: [fun_export, class_export, expr_export]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.FunctionDeclaration{id: %AST.Identifier{name: "f"}} + } = fun_export + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.ClassDeclaration{id: %AST.Identifier{name: "C"}} + } = class_export + + assert %AST.ExportDefaultDeclaration{declaration: %AST.BinaryExpression{operator: "+"}} = + expr_export + end +end diff --git a/test/js/parser/modules/default_import_specifier_test.exs b/test/js/parser/modules/default_import_specifier_test.exs new file mode 100644 index 000000000..e07b11642 --- /dev/null +++ b/test/js/parser/modules/default_import_specifier_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Modules.DefaultImportSpecifierTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible default named import specifier syntax" do + source = ~S(import { default as namedDefault } from "dep";) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ImportDeclaration{ + specifiers: [ + %AST.ImportSpecifier{ + imported: %AST.Identifier{name: "default"}, + local: %AST.Identifier{name: "namedDefault"} + } + ], + source: %AST.Literal{value: "dep"} + } = statement + end +end diff --git a/test/js/parser/modules/default_namespace_export_test.exs b/test/js/parser/modules/default_namespace_export_test.exs new file mode 100644 index 000000000..920e72f13 --- /dev/null +++ b/test/js/parser/modules/default_namespace_export_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.Modules.DefaultNamespaceExportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible default namespace re-export syntax" do + source = ~S(export * as default from "dep";) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportAllDeclaration{ + exported: %AST.Identifier{name: "default"}, + source: %AST.Literal{value: "dep"} + } = statement + end +end diff --git a/test/js/parser/modules/default_namespace_import_test.exs b/test/js/parser/modules/default_namespace_import_test.exs new file mode 100644 index 000000000..e0c9fbc01 --- /dev/null +++ b/test/js/parser/modules/default_namespace_import_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Modules.DefaultNamespaceImportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible default plus namespace import syntax" do + source = ~S(import defaultValue, * as namespaceValue from "dep";) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ImportDeclaration{ + specifiers: [ + %AST.ImportDefaultSpecifier{local: %AST.Identifier{name: "defaultValue"}}, + %AST.ImportNamespaceSpecifier{local: %AST.Identifier{name: "namespaceValue"}} + ], + source: %AST.Literal{value: "dep"} + } = statement + end +end diff --git a/test/js/parser/modules/default_reexport_specifier_test.exs b/test/js/parser/modules/default_reexport_specifier_test.exs new file mode 100644 index 000000000..cfaf13992 --- /dev/null +++ b/test/js/parser/modules/default_reexport_specifier_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Modules.DefaultReexportSpecifierTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible default re-export specifier syntax" do + source = ~S(export { default as namedDefault } from "dep";) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportNamedDeclaration{ + specifiers: [ + %AST.ExportSpecifier{ + local: %AST.Identifier{name: "default"}, + exported: %AST.Identifier{name: "namedDefault"} + } + ], + source: %AST.Literal{value: "dep"} + } = statement + end +end diff --git a/test/js/parser/modules/default_specifier_export_test.exs b/test/js/parser/modules/default_specifier_export_test.exs new file mode 100644 index 000000000..8648820bb --- /dev/null +++ b/test/js/parser/modules/default_specifier_export_test.exs @@ -0,0 +1,37 @@ +defmodule QuickBEAM.JS.Parser.Modules.DefaultSpecifierExportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible default specifier re-export syntax" do + source = """ + export { default as foo } from "dep"; + export { foo as default }; + """ + + assert {:ok, %AST.Program{body: [reexport_default, export_as_default]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportNamedDeclaration{ + specifiers: [ + %AST.ExportSpecifier{ + local: %AST.Identifier{name: "default"}, + exported: %AST.Identifier{name: "foo"} + } + ], + source: %AST.Literal{value: "dep"} + } = reexport_default + + assert %AST.ExportNamedDeclaration{ + specifiers: [ + %AST.ExportSpecifier{ + local: %AST.Identifier{name: "foo"}, + exported: %AST.Identifier{name: "default"} + } + ], + source: nil + } = export_as_default + end +end diff --git a/test/js/parser/modules/default_specifier_import_test.exs b/test/js/parser/modules/default_specifier_import_test.exs new file mode 100644 index 000000000..f4ce45b77 --- /dev/null +++ b/test/js/parser/modules/default_specifier_import_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Modules.DefaultSpecifierImportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible default named import specifier syntax" do + assert {:ok, %AST.Program{body: [statement]}} = + Parser.parse(~s|import { default as foo } from "dep";|, source_type: :module) + + assert %AST.ImportDeclaration{ + specifiers: [ + %AST.ImportSpecifier{ + imported: %AST.Identifier{name: "default"}, + local: %AST.Identifier{name: "foo"} + } + ], + source: %AST.Literal{value: "dep"} + } = statement + end +end diff --git a/test/js/parser/modules/dynamic_import_attributes_test.exs b/test/js/parser/modules/dynamic_import_attributes_test.exs new file mode 100644 index 000000000..fdf31fa93 --- /dev/null +++ b/test/js/parser/modules/dynamic_import_attributes_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Modules.DynamicImportAttributesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible dynamic import attributes syntax" do + source = ~s|module = import("./data.json", { with: { type: "json" } });| + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.CallExpression{ + callee: %AST.Identifier{name: "import"}, + arguments: [ + %AST.Literal{value: "./data.json"}, + %AST.ObjectExpression{ + properties: [%AST.Property{key: %AST.Identifier{name: "with"}}] + } + ] + } + } + } = statement + end +end diff --git a/test/js/parser/modules/dynamic_import_statement_test.exs b/test/js/parser/modules/dynamic_import_statement_test.exs new file mode 100644 index 000000000..ab388fdba --- /dev/null +++ b/test/js/parser/modules/dynamic_import_statement_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.Modules.DynamicImportStatementTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "parses dynamic import at statement position as a call expression" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.Identifier{name: "import"}, + arguments: [%AST.Literal{value: "./module.js"}] + } + } + ] + }} = Parser.parse(~s|import("./module.js");|) + end + + test "parses dynamic import with options object" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.Identifier{name: "import"}, + arguments: [ + %AST.Literal{value: "./module.js"}, + %AST.ObjectExpression{} + ] + } + } + ] + }} = Parser.parse(~s|import("./module.js", { with: { type: "json" } });|) + end +end diff --git a/test/js/parser/modules/dynamic_import_test.exs b/test/js/parser/modules/dynamic_import_test.exs new file mode 100644 index 000000000..2196007b0 --- /dev/null +++ b/test/js/parser/modules/dynamic_import_test.exs @@ -0,0 +1,20 @@ +defmodule QuickBEAM.JS.Parser.Modules.DynamicImportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible dynamic import expression syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(~s|value = import("mod");|) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.CallExpression{ + callee: %AST.Identifier{name: "import"}, + arguments: [%AST.Literal{value: "mod"}] + } + } + } = statement + end +end diff --git a/test/js/parser/modules/export_all_alias_assertions_test.exs b/test/js/parser/modules/export_all_alias_assertions_test.exs new file mode 100644 index 000000000..a6c17c6f8 --- /dev/null +++ b/test/js/parser/modules/export_all_alias_assertions_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Modules.ExportAllAliasAssertionsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible export-all alias assertions syntax" do + source = ~S|export * as namespace from "dep" assert { type: "json" };| + + assert {:ok, + %AST.Program{ + body: [ + %AST.ExportAllDeclaration{ + exported: %AST.Identifier{name: "namespace"}, + source: %AST.Literal{value: "dep"}, + attributes: attributes + } + ] + }} = + Parser.parse(source, source_type: :module) + + assert %AST.ObjectExpression{properties: [%AST.Property{key: %AST.Identifier{name: "type"}}]} = + attributes + end +end diff --git a/test/js/parser/modules/export_all_assertions_test.exs b/test/js/parser/modules/export_all_assertions_test.exs new file mode 100644 index 000000000..93f29d7e3 --- /dev/null +++ b/test/js/parser/modules/export_all_assertions_test.exs @@ -0,0 +1,33 @@ +defmodule QuickBEAM.JS.Parser.Modules.ExportAllAssertionsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible export-all assertions syntax" do + source = ~S|export * from "dep" assert { type: "json" };| + + assert {:ok, + %AST.Program{ + body: [ + %AST.ExportAllDeclaration{ + exported: nil, + source: %AST.Literal{value: "dep"}, + attributes: attributes + } + ] + }} = + Parser.parse(source, source_type: :module) + + assert %AST.ObjectExpression{ + properties: [ + %AST.Property{ + key: %AST.Identifier{name: "type"}, + value: %AST.Literal{value: "json"} + } + ] + } = + attributes + end +end diff --git a/test/js/parser/modules/export_all_test.exs b/test/js/parser/modules/export_all_test.exs new file mode 100644 index 000000000..1ba001ae5 --- /dev/null +++ b/test/js/parser/modules/export_all_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Modules.ExportAllTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible export-all module syntax" do + source = ~s|export * from "dep"; export * as ns from "dep2";| + + assert {:ok, %AST.Program{body: [all_export, namespace_export]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportAllDeclaration{exported: nil, source: %AST.Literal{value: "dep"}} = + all_export + + assert %AST.ExportAllDeclaration{ + exported: %AST.Identifier{name: "ns"}, + source: %AST.Literal{value: "dep2"} + } = namespace_export + end +end diff --git a/test/js/parser/modules/export_attributes_test.exs b/test/js/parser/modules/export_attributes_test.exs new file mode 100644 index 000000000..874e291fa --- /dev/null +++ b/test/js/parser/modules/export_attributes_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.Modules.ExportAttributesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible re-export attributes syntax" do + source = """ + export { value } from "./data.json" with { type: "json" }; + export * from "./all.json" assert { type: "json" }; + """ + + assert {:ok, %AST.Program{source_type: :module, body: [named, all]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportNamedDeclaration{ + specifiers: [%AST.ExportSpecifier{local: %AST.Identifier{name: "value"}}], + source: %AST.Literal{value: "./data.json"}, + attributes: %AST.ObjectExpression{ + properties: [%AST.Property{key: %AST.Identifier{name: "type"}}] + } + } = named + + assert %AST.ExportAllDeclaration{ + source: %AST.Literal{value: "./all.json"}, + attributes: %AST.ObjectExpression{ + properties: [%AST.Property{value: %AST.Literal{value: "json"}}] + } + } = all + end +end diff --git a/test/js/parser/modules/export_default_sequence_test.exs b/test/js/parser/modules/export_default_sequence_test.exs new file mode 100644 index 000000000..ec62a859b --- /dev/null +++ b/test/js/parser/modules/export_default_sequence_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Modules.ExportDefaultSequenceTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible default sequence export syntax" do + source = "export default (setup(), value);" + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportDefaultDeclaration{ + declaration: %AST.SequenceExpression{ + expressions: [ + %AST.CallExpression{callee: %AST.Identifier{name: "setup"}}, + %AST.Identifier{name: "value"} + ] + } + } = statement + end +end diff --git a/test/js/parser/modules/import_attributes_test.exs b/test/js/parser/modules/import_attributes_test.exs new file mode 100644 index 000000000..fab611eb2 --- /dev/null +++ b/test/js/parser/modules/import_attributes_test.exs @@ -0,0 +1,40 @@ +defmodule QuickBEAM.JS.Parser.Modules.ImportAttributesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible static import attributes syntax" do + source = ~S(import data from "./data.json" with { type: "json" };) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ImportDeclaration{ + specifiers: [%AST.ImportDefaultSpecifier{local: %AST.Identifier{name: "data"}}], + source: %AST.Literal{value: "./data.json"}, + attributes: %AST.ObjectExpression{ + properties: [ + %AST.Property{ + key: %AST.Identifier{name: "type"}, + value: %AST.Literal{value: "json"} + } + ] + } + } = statement + end + + test "ports QuickJS-compatible side-effect import assertion syntax" do + source = ~S(import "./setup.json" assert { type: "json" };) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ImportDeclaration{ + specifiers: [], + source: %AST.Literal{value: "./setup.json"}, + attributes: %AST.ObjectExpression{} + } = statement + end +end diff --git a/test/js/parser/modules/import_binding_conflict_test.exs b/test/js/parser/modules/import_binding_conflict_test.exs new file mode 100644 index 000000000..5fe1c55a6 --- /dev/null +++ b/test/js/parser/modules/import_binding_conflict_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Modules.ImportBindingConflictTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS duplicate import binding diagnostics" do + source = ~s(import { value } from "a"; import { other as value } from "b";) + + assert {:error, %AST.Program{body: [%AST.ImportDeclaration{}, %AST.ImportDeclaration{}]}, + errors} = + Parser.parse(source, source_type: :module) + + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end + + test "ports QuickJS import binding conflict with lexical declaration diagnostics" do + source = ~s(import value from "a"; let value;) + + assert {:error, %AST.Program{body: [%AST.ImportDeclaration{}, %AST.VariableDeclaration{}]}, + errors} = + Parser.parse(source, source_type: :module) + + assert Enum.any?(errors, &(&1.message == "duplicate lexical declaration")) + end +end diff --git a/test/js/parser/modules/import_call_member_test.exs b/test/js/parser/modules/import_call_member_test.exs new file mode 100644 index 000000000..e8d842476 --- /dev/null +++ b/test/js/parser/modules/import_call_member_test.exs @@ -0,0 +1,39 @@ +defmodule QuickBEAM.JS.Parser.Modules.ImportCallMemberTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "parses import.defer as a member call expression" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.CallExpression{ + callee: %AST.MemberExpression{ + object: %AST.Identifier{name: "import"}, + property: %AST.Identifier{name: "defer"} + }, + arguments: [%AST.Identifier{name: "specifier"}] + } + } + ] + }} = Parser.parse("import.defer(specifier);") + end + + test "keeps import.meta as a meta property" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.MemberExpression{ + object: %AST.MetaProperty{}, + property: %AST.Identifier{name: "url"} + } + } + ] + }} = Parser.parse("import.meta.url;", source_type: :module) + end +end diff --git a/test/js/parser/modules/import_defer_test.exs b/test/js/parser/modules/import_defer_test.exs new file mode 100644 index 000000000..24fff2fb5 --- /dev/null +++ b/test/js/parser/modules/import_defer_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Modules.ImportDeferTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "parses static deferred namespace imports" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ImportDeclaration{ + specifiers: [ + %AST.ImportNamespaceSpecifier{local: %AST.Identifier{name: "ns"}} + ], + source: %AST.Literal{value: "./dep.js"} + } + ] + }} = Parser.parse(~s|import defer * as ns from "./dep.js";|, source_type: :module) + end +end diff --git a/test/js/parser/modules/import_meta_test.exs b/test/js/parser/modules/import_meta_test.exs new file mode 100644 index 000000000..0508b523c --- /dev/null +++ b/test/js/parser/modules/import_meta_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Modules.ImportMetaTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible import.meta syntax" do + assert {:ok, %AST.Program{body: [statement]}} = + Parser.parse("url = import.meta.url;", source_type: :module) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.MemberExpression{ + object: %AST.MetaProperty{ + meta: %AST.Identifier{name: "import"}, + property: %AST.Identifier{name: "meta"} + }, + property: %AST.Identifier{name: "url"} + } + } + } = statement + end +end diff --git a/test/js/parser/modules/import_source_test.exs b/test/js/parser/modules/import_source_test.exs new file mode 100644 index 000000000..c07602e1f --- /dev/null +++ b/test/js/parser/modules/import_source_test.exs @@ -0,0 +1,43 @@ +defmodule QuickBEAM.JS.Parser.Modules.ImportSourceTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS source phase import binding syntax" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ImportDeclaration{ + specifiers: [ + %AST.ImportDefaultSpecifier{local: %AST.Identifier{name: "source"}} + ], + source: %AST.Literal{value: "module"} + }, + %AST.ImportDeclaration{ + specifiers: [%AST.ImportDefaultSpecifier{local: %AST.Identifier{name: "from"}}], + source: %AST.Literal{value: "module"} + } + ] + }} = + Parser.parse( + "import source source from 'module';\nimport source from from 'module';", + source_type: :module + ) + end + + test "keeps source as an ordinary default import name" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ImportDeclaration{ + specifiers: [ + %AST.ImportDefaultSpecifier{local: %AST.Identifier{name: "source"}} + ], + source: %AST.Literal{value: "module"} + } + ] + }} = Parser.parse("import source from 'module';", source_type: :module) + end +end diff --git a/test/js/parser/modules/module_syntax_test.exs b/test/js/parser/modules/module_syntax_test.exs new file mode 100644 index 000000000..4c2fef7ae --- /dev/null +++ b/test/js/parser/modules/module_syntax_test.exs @@ -0,0 +1,64 @@ +defmodule QuickBEAM.JS.Parser.Modules.ModuleSyntaxTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible import and export module syntax" do + source = """ + import "side-effect"; + import defaultExport, { foo as bar, baz } from "mod"; + import * as ns from "mod2"; + export { bar as foo, baz } from "mod"; + export const answer = 42; + export function f() { return answer; } + export class C {} + """ + + assert {:ok, + %AST.Program{ + body: [ + side_effect, + named_import, + namespace_import, + named_export, + const_export, + function_export, + class_export + ] + }} = + Parser.parse(source, source_type: :module) + + assert %AST.ImportDeclaration{source: %AST.Literal{value: "side-effect"}, specifiers: []} = + side_effect + + assert %AST.ImportDeclaration{ + specifiers: [ + %AST.ImportDefaultSpecifier{}, + %AST.ImportSpecifier{}, + %AST.ImportSpecifier{} + ] + } = named_import + + assert %AST.ImportDeclaration{ + specifiers: [%AST.ImportNamespaceSpecifier{local: %AST.Identifier{name: "ns"}}] + } = namespace_import + + assert %AST.ExportNamedDeclaration{ + specifiers: [%AST.ExportSpecifier{}, %AST.ExportSpecifier{}], + source: %AST.Literal{value: "mod"} + } = named_export + + assert %AST.ExportNamedDeclaration{declaration: %AST.VariableDeclaration{kind: :const}} = + const_export + + assert %AST.ExportNamedDeclaration{ + declaration: %AST.FunctionDeclaration{id: %AST.Identifier{name: "f"}} + } = function_export + + assert %AST.ExportNamedDeclaration{ + declaration: %AST.ClassDeclaration{id: %AST.Identifier{name: "C"}} + } = class_export + end +end diff --git a/test/js/parser/modules/named_export_assertions_test.exs b/test/js/parser/modules/named_export_assertions_test.exs new file mode 100644 index 000000000..098803a0b --- /dev/null +++ b/test/js/parser/modules/named_export_assertions_test.exs @@ -0,0 +1,31 @@ +defmodule QuickBEAM.JS.Parser.Modules.NamedExportAssertionsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible named re-export assertions syntax" do + source = ~S|export { name as alias } from "dep" assert { type: "json" };| + + assert {:ok, + %AST.Program{ + body: [ + %AST.ExportNamedDeclaration{ + specifiers: [specifier], + source: %AST.Literal{value: "dep"}, + attributes: attributes + } + ] + }} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportSpecifier{ + local: %AST.Identifier{name: "name"}, + exported: %AST.Identifier{name: "alias"} + } = specifier + + assert %AST.ObjectExpression{properties: [%AST.Property{key: %AST.Identifier{name: "type"}}]} = + attributes + end +end diff --git a/test/js/parser/modules/named_export_trailing_comma_test.exs b/test/js/parser/modules/named_export_trailing_comma_test.exs new file mode 100644 index 000000000..58e295ff3 --- /dev/null +++ b/test/js/parser/modules/named_export_trailing_comma_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Modules.NamedExportTrailingCommaTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible named export trailing comma syntax" do + source = ~S(export { value, other as aliasValue, };) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportNamedDeclaration{ + specifiers: [ + %AST.ExportSpecifier{ + local: %AST.Identifier{name: "value"}, + exported: %AST.Identifier{name: "value"} + }, + %AST.ExportSpecifier{ + local: %AST.Identifier{name: "other"}, + exported: %AST.Identifier{name: "aliasValue"} + } + ], + source: nil + } = statement + end +end diff --git a/test/js/parser/modules/named_import_attributes_test.exs b/test/js/parser/modules/named_import_attributes_test.exs new file mode 100644 index 000000000..5909d11ec --- /dev/null +++ b/test/js/parser/modules/named_import_attributes_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Modules.NamedImportAttributesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible named import attributes syntax" do + source = ~S(import { value as localValue } from "./data.json" assert { type: "json" };) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ImportDeclaration{ + specifiers: [ + %AST.ImportSpecifier{ + imported: %AST.Identifier{name: "value"}, + local: %AST.Identifier{name: "localValue"} + } + ], + source: %AST.Literal{value: "./data.json"}, + attributes: %AST.ObjectExpression{ + properties: [%AST.Property{key: %AST.Identifier{name: "type"}}] + } + } = statement + end +end diff --git a/test/js/parser/modules/named_import_trailing_comma_test.exs b/test/js/parser/modules/named_import_trailing_comma_test.exs new file mode 100644 index 000000000..fe5ab23a7 --- /dev/null +++ b/test/js/parser/modules/named_import_trailing_comma_test.exs @@ -0,0 +1,28 @@ +defmodule QuickBEAM.JS.Parser.Modules.NamedImportTrailingCommaTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible named import trailing comma syntax" do + source = ~S(import { value, other as aliasValue, } from "dep";) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ImportDeclaration{ + specifiers: [ + %AST.ImportSpecifier{ + imported: %AST.Identifier{name: "value"}, + local: %AST.Identifier{name: "value"} + }, + %AST.ImportSpecifier{ + imported: %AST.Identifier{name: "other"}, + local: %AST.Identifier{name: "aliasValue"} + } + ], + source: %AST.Literal{value: "dep"} + } = statement + end +end diff --git a/test/js/parser/modules/named_module_clause_test.exs b/test/js/parser/modules/named_module_clause_test.exs new file mode 100644 index 000000000..f51843a76 --- /dev/null +++ b/test/js/parser/modules/named_module_clause_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Modules.NamedModuleClauseTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible default-only named import and local export syntax" do + source = """ + import defaultExport from "mod"; + import { foo } from "mod"; + export { foo }; + """ + + assert {:ok, %AST.Program{body: [default_import, named_import, local_export]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ImportDeclaration{ + specifiers: [ + %AST.ImportDefaultSpecifier{local: %AST.Identifier{name: "defaultExport"}} + ], + source: %AST.Literal{value: "mod"} + } = default_import + + assert %AST.ImportDeclaration{ + specifiers: [%AST.ImportSpecifier{imported: %AST.Identifier{name: "foo"}}], + source: %AST.Literal{value: "mod"} + } = named_import + + assert %AST.ExportNamedDeclaration{ + specifiers: [%AST.ExportSpecifier{local: %AST.Identifier{name: "foo"}}], + source: nil + } = local_export + end +end diff --git a/test/js/parser/modules/namespace_import_attributes_test.exs b/test/js/parser/modules/namespace_import_attributes_test.exs new file mode 100644 index 000000000..9ff664056 --- /dev/null +++ b/test/js/parser/modules/namespace_import_attributes_test.exs @@ -0,0 +1,22 @@ +defmodule QuickBEAM.JS.Parser.Modules.NamespaceImportAttributesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible namespace import attributes syntax" do + source = ~S(import * as data from "./data.json" with { type: "json" };) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ImportDeclaration{ + specifiers: [%AST.ImportNamespaceSpecifier{local: %AST.Identifier{name: "data"}}], + source: %AST.Literal{value: "./data.json"}, + attributes: %AST.ObjectExpression{ + properties: [%AST.Property{key: %AST.Identifier{name: "type"}}] + } + } = statement + end +end diff --git a/test/js/parser/modules/nested_module_declaration_test.exs b/test/js/parser/modules/nested_module_declaration_test.exs new file mode 100644 index 000000000..c488cfb26 --- /dev/null +++ b/test/js/parser/modules/nested_module_declaration_test.exs @@ -0,0 +1,27 @@ +defmodule QuickBEAM.JS.Parser.Modules.NestedModuleDeclarationTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS import declaration top-level diagnostics" do + assert {:error, %AST.Program{body: [%AST.BlockStatement{}]}, errors} = + Parser.parse(~s({ import value from "mod"; }), source_type: :module) + + assert Enum.any?( + errors, + &(&1.message == "import/export declarations only allowed at top level") + ) + end + + test "ports QuickJS export declaration top-level diagnostics" do + assert {:error, %AST.Program{body: [%AST.FunctionDeclaration{}]}, errors} = + Parser.parse("function f() { export const value = 1; }", source_type: :module) + + assert Enum.any?( + errors, + &(&1.message == "import/export declarations only allowed at top level") + ) + end +end diff --git a/test/js/parser/modules/reexport_trailing_comma_test.exs b/test/js/parser/modules/reexport_trailing_comma_test.exs new file mode 100644 index 000000000..86d4a668b --- /dev/null +++ b/test/js/parser/modules/reexport_trailing_comma_test.exs @@ -0,0 +1,25 @@ +defmodule QuickBEAM.JS.Parser.Modules.ReexportTrailingCommaTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible named re-export trailing comma syntax" do + source = ~S(export { value, other as aliasValue, } from "dep";) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportNamedDeclaration{ + specifiers: [ + %AST.ExportSpecifier{local: %AST.Identifier{name: "value"}}, + %AST.ExportSpecifier{ + local: %AST.Identifier{name: "other"}, + exported: %AST.Identifier{name: "aliasValue"} + } + ], + source: %AST.Literal{value: "dep"} + } = statement + end +end diff --git a/test/js/parser/modules/side_effect_import_assertions_test.exs b/test/js/parser/modules/side_effect_import_assertions_test.exs new file mode 100644 index 000000000..652b4b811 --- /dev/null +++ b/test/js/parser/modules/side_effect_import_assertions_test.exs @@ -0,0 +1,26 @@ +defmodule QuickBEAM.JS.Parser.Modules.SideEffectImportAssertionsTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible side-effect import assertions syntax" do + source = ~S|import "dep" assert { type: "json" };| + + assert {:ok, + %AST.Program{ + body: [ + %AST.ImportDeclaration{ + specifiers: [], + source: %AST.Literal{value: "dep"}, + attributes: attributes + } + ] + }} = + Parser.parse(source, source_type: :module) + + assert %AST.ObjectExpression{properties: [%AST.Property{key: %AST.Identifier{name: "type"}}]} = + attributes + end +end diff --git a/test/js/parser/modules/side_effect_import_attributes_test.exs b/test/js/parser/modules/side_effect_import_attributes_test.exs new file mode 100644 index 000000000..5d144a358 --- /dev/null +++ b/test/js/parser/modules/side_effect_import_attributes_test.exs @@ -0,0 +1,32 @@ +defmodule QuickBEAM.JS.Parser.Modules.SideEffectImportAttributesTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible side-effect import attributes syntax" do + source = ~S|import "dep" with { type: "json" };| + + assert {:ok, + %AST.Program{ + body: [ + %AST.ImportDeclaration{ + specifiers: [], + source: %AST.Literal{value: "dep"}, + attributes: attributes + } + ] + }} = + Parser.parse(source, source_type: :module) + + assert %AST.ObjectExpression{ + properties: [ + %AST.Property{ + key: %AST.Identifier{name: "type"}, + value: %AST.Literal{value: "json"} + } + ] + } = attributes + end +end diff --git a/test/js/parser/modules/string_name_export_test.exs b/test/js/parser/modules/string_name_export_test.exs new file mode 100644 index 000000000..96b0d8508 --- /dev/null +++ b/test/js/parser/modules/string_name_export_test.exs @@ -0,0 +1,37 @@ +defmodule QuickBEAM.JS.Parser.Modules.StringNameExportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible string export name syntax" do + source = """ + export { value as "external-name" }; + export { "external-name" as value } from "dep"; + """ + + assert {:ok, %AST.Program{body: [local_export, reexport]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportNamedDeclaration{ + specifiers: [ + %AST.ExportSpecifier{ + local: %AST.Identifier{name: "value"}, + exported: %AST.Literal{value: "external-name"} + } + ], + source: nil + } = local_export + + assert %AST.ExportNamedDeclaration{ + specifiers: [ + %AST.ExportSpecifier{ + local: %AST.Literal{value: "external-name"}, + exported: %AST.Identifier{name: "value"} + } + ], + source: %AST.Literal{value: "dep"} + } = reexport + end +end diff --git a/test/js/parser/modules/string_name_import_test.exs b/test/js/parser/modules/string_name_import_test.exs new file mode 100644 index 000000000..d53d94053 --- /dev/null +++ b/test/js/parser/modules/string_name_import_test.exs @@ -0,0 +1,24 @@ +defmodule QuickBEAM.JS.Parser.Modules.StringNameImportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible string import name syntax" do + source = ~S(import { "external-name" as localName } from "dep";) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ImportDeclaration{ + specifiers: [ + %AST.ImportSpecifier{ + imported: %AST.Literal{value: "external-name"}, + local: %AST.Identifier{name: "localName"} + } + ], + source: %AST.Literal{value: "dep"} + } = statement + end +end diff --git a/test/js/parser/modules/string_namespace_export_test.exs b/test/js/parser/modules/string_namespace_export_test.exs new file mode 100644 index 000000000..31200a166 --- /dev/null +++ b/test/js/parser/modules/string_namespace_export_test.exs @@ -0,0 +1,19 @@ +defmodule QuickBEAM.JS.Parser.Modules.StringNamespaceExportTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible string namespace re-export syntax" do + source = ~S(export * as "external-name" from "dep";) + + assert {:ok, %AST.Program{source_type: :module, body: [statement]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExportAllDeclaration{ + exported: %AST.Literal{value: "external-name"}, + source: %AST.Literal{value: "dep"} + } = statement + end +end diff --git a/test/js/parser/modules/top_level_await_test.exs b/test/js/parser/modules/top_level_await_test.exs new file mode 100644 index 000000000..5b30df1ac --- /dev/null +++ b/test/js/parser/modules/top_level_await_test.exs @@ -0,0 +1,29 @@ +defmodule QuickBEAM.JS.Parser.Modules.TopLevelAwaitTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible top-level await module syntax" do + source = """ + await import("dep"); + value = await promise; + """ + + assert {:ok, %AST.Program{source_type: :module, body: [import_await, assignment]}} = + Parser.parse(source, source_type: :module) + + assert %AST.ExpressionStatement{ + expression: %AST.AwaitExpression{ + argument: %AST.CallExpression{callee: %AST.Identifier{name: "import"}} + } + } = import_await + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.AwaitExpression{argument: %AST.Identifier{name: "promise"}} + } + } = assignment + end +end diff --git a/test/js/parser/patterns/array_destructuring_assignment_test.exs b/test/js/parser/patterns/array_destructuring_assignment_test.exs new file mode 100644 index 000000000..e67b19119 --- /dev/null +++ b/test/js/parser/patterns/array_destructuring_assignment_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Patterns.ArrayDestructuringAssignmentTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible array destructuring assignment rest syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("[a, ...rest] = value;") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.ArrayPattern{ + elements: [ + %AST.Identifier{name: "a"}, + %AST.RestElement{argument: %AST.Identifier{name: "rest"}} + ] + }, + right: %AST.Identifier{name: "value"} + } + } = statement + end +end diff --git a/test/js/parser/patterns/assignment_pattern_ast_test.exs b/test/js/parser/patterns/assignment_pattern_ast_test.exs new file mode 100644 index 000000000..00d5b45d8 --- /dev/null +++ b/test/js/parser/patterns/assignment_pattern_ast_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Patterns.AssignmentPatternASTTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible assignment destructuring pattern AST shape" do + source = "({ a: { b }, c: [first, ...tail] } = object);" + + assert {:ok, %AST.Program{body: [%AST.ExpressionStatement{expression: assignment}]}} = + Parser.parse(source) + + assert %AST.AssignmentExpression{ + left: %AST.ObjectPattern{ + properties: [ + %AST.Property{ + value: %AST.ObjectPattern{ + properties: [%AST.Property{key: %AST.Identifier{name: "b"}}] + } + }, + %AST.Property{ + value: %AST.ArrayPattern{ + elements: [ + %AST.Identifier{name: "first"}, + %AST.RestElement{argument: %AST.Identifier{name: "tail"}} + ] + } + } + ] + }, + right: %AST.Identifier{name: "object"} + } = assignment + end +end diff --git a/test/js/parser/patterns/computed_object_pattern_test.exs b/test/js/parser/patterns/computed_object_pattern_test.exs new file mode 100644 index 000000000..6647db186 --- /dev/null +++ b/test/js/parser/patterns/computed_object_pattern_test.exs @@ -0,0 +1,45 @@ +defmodule QuickBEAM.JS.Parser.Patterns.ComputedObjectPatternTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible computed object binding pattern syntax" do + source = """ + var { [key]: value } = obj; + function f({ [key]: value = 1 }) {} + """ + + assert {:ok, %AST.Program{body: [declaration, function_decl]}} = Parser.parse(source) + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + id: %AST.ObjectPattern{ + properties: [ + %AST.Property{ + computed: true, + key: %AST.Identifier{name: "key"}, + value: %AST.Identifier{name: "value"} + } + ] + } + } + ] + } = declaration + + assert %AST.FunctionDeclaration{ + params: [ + %AST.ObjectPattern{ + properties: [ + %AST.Property{ + computed: true, + value: %AST.AssignmentPattern{left: %AST.Identifier{name: "value"}} + } + ] + } + ] + } = function_decl + end +end diff --git a/test/js/parser/patterns/destructuring_test.exs b/test/js/parser/patterns/destructuring_test.exs new file mode 100644 index 000000000..96bcb81fc --- /dev/null +++ b/test/js/parser/patterns/destructuring_test.exs @@ -0,0 +1,52 @@ +defmodule QuickBEAM.JS.Parser.Patterns.DestructuringTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS basic array destructuring declaration" do + source = """ + function * g () { return 0; }; + var [x] = g(); + """ + + assert {:ok, + %AST.Program{ + body: [ + %AST.FunctionDeclaration{generator: true}, + %AST.EmptyStatement{}, + declaration + ] + }} = + Parser.parse(source) + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + id: %AST.ArrayPattern{elements: [%AST.Identifier{name: "x"}]}, + init: %AST.CallExpression{callee: %AST.Identifier{name: "g"}} + } + ] + } = declaration + end + + test "ports QuickJS array binding defaults and rest syntax" do + assert {:ok, %AST.Program{body: [declaration]}} = + Parser.parse("var [a, b = 1, ...rest] = value;") + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + id: %AST.ArrayPattern{ + elements: [ + %AST.Identifier{name: "a"}, + %AST.AssignmentPattern{left: %AST.Identifier{name: "b"}}, + %AST.RestElement{argument: %AST.Identifier{name: "rest"}} + ] + } + } + ] + } = declaration + end +end diff --git a/test/js/parser/patterns/function_length_pattern_test.exs b/test/js/parser/patterns/function_length_pattern_test.exs new file mode 100644 index 000000000..724af029e --- /dev/null +++ b/test/js/parser/patterns/function_length_pattern_test.exs @@ -0,0 +1,42 @@ +defmodule QuickBEAM.JS.Parser.Patterns.FunctionLengthPatternTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS function-length parameter pattern syntax" do + source = """ + f = ([a, b]) => {}; + g = ({a, b}) => {}; + h = (c, [a, b] = 1, d) => {}; + """ + + assert {:ok, %AST.Program{body: [array_param, object_param, default_pattern_param]}} = + Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ArrowFunctionExpression{params: [%AST.ArrayPattern{}]} + } + } = array_param + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ArrowFunctionExpression{params: [%AST.ObjectPattern{}]} + } + } = object_param + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.ArrowFunctionExpression{ + params: [ + %AST.Identifier{name: "c"}, + %AST.AssignmentPattern{left: %AST.ArrayPattern{}}, + %AST.Identifier{name: "d"} + ] + } + } + } = default_pattern_param + end +end diff --git a/test/js/parser/patterns/function_length_test.exs b/test/js/parser/patterns/function_length_test.exs new file mode 100644 index 000000000..9a5cb8515 --- /dev/null +++ b/test/js/parser/patterns/function_length_test.exs @@ -0,0 +1,52 @@ +defmodule QuickBEAM.JS.Parser.Patterns.FunctionLengthTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS arrow parameter default and destructuring syntax" do + source = """ + var f = (a, b = 1, c) => {}; + var g = ([a,b]) => {}; + var h = ({a,b}) => {}; + var i = (c, [a,b] = 1, d) => {}; + """ + + assert {:ok, %AST.Program{body: [f, g, h, i]}} = Parser.parse(source) + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.ArrowFunctionExpression{params: [_, %AST.AssignmentPattern{}, _]} + } + ] + } = f + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.ArrowFunctionExpression{params: [%AST.ArrayPattern{}]} + } + ] + } = g + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.ArrowFunctionExpression{params: [%AST.ObjectPattern{}]} + } + ] + } = h + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + init: %AST.ArrowFunctionExpression{ + params: [_, %AST.AssignmentPattern{left: %AST.ArrayPattern{}}, _] + } + } + ] + } = i + end +end diff --git a/test/js/parser/patterns/nested_destructuring_assignment_test.exs b/test/js/parser/patterns/nested_destructuring_assignment_test.exs new file mode 100644 index 000000000..c7d9bb188 --- /dev/null +++ b/test/js/parser/patterns/nested_destructuring_assignment_test.exs @@ -0,0 +1,37 @@ +defmodule QuickBEAM.JS.Parser.Patterns.NestedDestructuringAssignmentTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible nested destructuring assignment syntax" do + source = """ + ({ a: { b = 1 }, c: [first, ...tail] } = object); + """ + + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse(source) + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.ObjectPattern{ + properties: [ + %AST.Property{ + value: %AST.ObjectPattern{ + properties: [ + %AST.Property{value: %AST.AssignmentPattern{}} + ] + } + }, + %AST.Property{ + value: %AST.ArrayPattern{ + elements: [%AST.Identifier{name: "first"}, %AST.RestElement{}] + } + } + ] + }, + right: %AST.Identifier{name: "object"} + } + } = statement + end +end diff --git a/test/js/parser/patterns/nested_destructuring_binding_test.exs b/test/js/parser/patterns/nested_destructuring_binding_test.exs new file mode 100644 index 000000000..e05ed421a --- /dev/null +++ b/test/js/parser/patterns/nested_destructuring_binding_test.exs @@ -0,0 +1,38 @@ +defmodule QuickBEAM.JS.Parser.Patterns.NestedDestructuringBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible nested destructuring binding syntax" do + source = """ + const { a: { b = 1 }, c: [first, ...tail] } = object; + """ + + assert {:ok, %AST.Program{body: [declaration]}} = Parser.parse(source) + + assert %AST.VariableDeclaration{ + kind: :const, + declarations: [ + %AST.VariableDeclarator{ + id: %AST.ObjectPattern{ + properties: [ + %AST.Property{ + value: %AST.ObjectPattern{ + properties: [%AST.Property{value: %AST.AssignmentPattern{}}] + } + }, + %AST.Property{ + value: %AST.ArrayPattern{ + elements: [%AST.Identifier{name: "first"}, %AST.RestElement{}] + } + } + ] + }, + init: %AST.Identifier{name: "object"} + } + ] + } = declaration + end +end diff --git a/test/js/parser/patterns/object_destructuring_assignment_test.exs b/test/js/parser/patterns/object_destructuring_assignment_test.exs new file mode 100644 index 000000000..ac24673a8 --- /dev/null +++ b/test/js/parser/patterns/object_destructuring_assignment_test.exs @@ -0,0 +1,30 @@ +defmodule QuickBEAM.JS.Parser.Patterns.ObjectDestructuringAssignmentTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible object destructuring assignment defaults" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("({ a, b = 1 } = obj);") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.ObjectPattern{ + properties: [ + %AST.Property{key: %AST.Identifier{name: "a"}, shorthand: true}, + %AST.Property{ + key: %AST.Identifier{name: "b"}, + shorthand: true, + value: %AST.AssignmentPattern{ + left: %AST.Identifier{name: "b"}, + right: %AST.Literal{value: 1} + } + } + ] + }, + right: %AST.Identifier{name: "obj"} + } + } = statement + end +end diff --git a/test/js/parser/patterns/object_proto_assignment_test.exs b/test/js/parser/patterns/object_proto_assignment_test.exs new file mode 100644 index 000000000..ae57d653d --- /dev/null +++ b/test/js/parser/patterns/object_proto_assignment_test.exs @@ -0,0 +1,35 @@ +defmodule QuickBEAM.JS.Parser.Patterns.ObjectProtoAssignmentTest do + use ExUnit.Case, async: true + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + @moduletag :quickjs_port + + test "allows duplicate __proto__ names in object assignment patterns" do + assert {:ok, + %AST.Program{ + body: [ + %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + right: %AST.AssignmentExpression{ + left: %AST.ObjectPattern{ + properties: [ + %AST.Property{key: %AST.Identifier{name: "__proto__"}}, + %AST.Property{key: %AST.Identifier{name: "__proto__"}} + ] + } + } + } + } + ] + }} = Parser.parse("result = { __proto__: x, __proto__: y } = value;") + end + + test "keeps duplicate __proto__ data properties invalid in object initializers" do + assert {:error, %AST.Program{}, errors} = + Parser.parse("object = { __proto__: first, \"__proto__\": second };") + + assert Enum.any?(errors, &(&1.message == "duplicate __proto__ property")) + end +end diff --git a/test/js/parser/patterns/object_rest_assignment_test.exs b/test/js/parser/patterns/object_rest_assignment_test.exs new file mode 100644 index 000000000..31f2bf311 --- /dev/null +++ b/test/js/parser/patterns/object_rest_assignment_test.exs @@ -0,0 +1,23 @@ +defmodule QuickBEAM.JS.Parser.Patterns.ObjectRestAssignmentTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible object rest destructuring assignment syntax" do + assert {:ok, %AST.Program{body: [statement]}} = Parser.parse("({ a, ...rest } = object);") + + assert %AST.ExpressionStatement{ + expression: %AST.AssignmentExpression{ + left: %AST.ObjectPattern{ + properties: [ + %AST.Property{key: %AST.Identifier{name: "a"}, shorthand: true}, + %AST.RestElement{argument: %AST.Identifier{name: "rest"}} + ] + }, + right: %AST.Identifier{name: "object"} + } + } = statement + end +end diff --git a/test/js/parser/patterns/object_rest_binding_test.exs b/test/js/parser/patterns/object_rest_binding_test.exs new file mode 100644 index 000000000..f701b6936 --- /dev/null +++ b/test/js/parser/patterns/object_rest_binding_test.exs @@ -0,0 +1,34 @@ +defmodule QuickBEAM.JS.Parser.Patterns.ObjectRestBindingTest do + use ExUnit.Case, async: true + @moduletag :quickjs_port + + alias QuickBEAM.JS.Parser + alias QuickBEAM.JS.Parser.AST + + test "ports QuickJS-compatible object rest binding syntax" do + source = """ + var { a, ...rest } = obj; + function f({ a, ...rest }) {} + """ + + assert {:ok, %AST.Program{body: [declaration, function_decl]}} = Parser.parse(source) + + assert %AST.VariableDeclaration{ + declarations: [ + %AST.VariableDeclarator{ + id: %AST.ObjectPattern{ + properties: [_, %AST.RestElement{argument: %AST.Identifier{name: "rest"}}] + } + } + ] + } = declaration + + assert %AST.FunctionDeclaration{ + params: [ + %AST.ObjectPattern{ + properties: [_, %AST.RestElement{argument: %AST.Identifier{name: "rest"}}] + } + ] + } = function_decl + end +end diff --git a/test/js/parser/quickjs_acceptance_audit_test.exs b/test/js/parser/quickjs_acceptance_audit_test.exs new file mode 100644 index 000000000..8a9cd98d3 --- /dev/null +++ b/test/js/parser/quickjs_acceptance_audit_test.exs @@ -0,0 +1,151 @@ +defmodule QuickBEAM.JS.Parser.QuickJSAcceptanceAuditTest do + use ExUnit.Case, async: false + + @moduletag :quickjs_acceptance_audit + + @default_glob "test/test262/test/**/*.js" + @default_limit 2_000 + @default_offset 0 + @default_timeout 5_000 + + env_int = fn name, default -> + case System.get_env(name) do + nil -> default + "" -> default + value -> String.to_integer(value) + end + end + + @audit_file_timeout env_int.("AUDIT_FILE_TIMEOUT", @default_timeout) + + @selected_files System.get_env("AUDIT_GLOB", @default_glob) + |> Path.wildcard() + |> Enum.reject(&String.ends_with?(&1, "_FIXTURE.js")) + |> Enum.sort() + |> Enum.drop(env_int.("AUDIT_OFFSET", @default_offset)) + |> Enum.take(env_int.("AUDIT_LIMIT", @default_limit)) + + metadata = fn source -> + yaml = + case Regex.run(~r{/\*---\r?\n(.*?)\r?\n---\*/}s, source, capture: :all_but_first) do + [yaml] -> yaml + _ -> "" + end + + flags = + case Regex.run(~r/^flags:\s*\[(.*?)\]\r?$/m, yaml, capture: :all_but_first) do + [flags] -> + flags + + _ -> + if Regex.match?(~r/^flags:\s*\r?\n(?:\s*-\s*\S+\s*\r?\n?)+/m, yaml), do: yaml, else: "" + end + + features = + case Regex.run(~r/^features:\s*\[(.*?)\]\r?$/m, yaml, capture: :all_but_first) do + [features] -> + features + + _ -> + if Regex.match?(~r/^features:\s*\r?\n(?:\s*-\s*\S+\s*\r?\n?)+/m, yaml), + do: yaml, + else: "" + end + + %{flags: flags, features: features} + end + + module_file? = fn path, source, flags -> + String.contains?(flags, "module") or + (String.contains?(path, "/module-code/") and + not String.contains?(Path.basename(path), "script-code")) or + Regex.match?(~r/^\s*(import|export)\b/m, source) + end + + unsupported_quickjs_feature? = fn features -> + String.contains?(features, "decorators") or + String.contains?(features, "explicit-resource-management") or + String.contains?(features, "source-phase-imports") or + String.contains?(features, "regexp-modifiers") or + String.contains?(features, "regexp-v-flag") + end + + unsupported_quickjs_syntax_gap? = fn source -> + Regex.match?(~r/\b(?:static\s+)?(?:get|set)\s*\R\s*\*/, source) or + String.contains?(source, "sec-runtime-errors-for-function-call-assignment-targets") or + Regex.match?(~r/\\[pP]\{(?:Script|sc|Script_Extensions|scx)=(?:Unknown|Zzzz)\}/, source) + end + + audit_source = fn source, flags -> + if String.contains?(flags, "onlyStrict"), do: ~s("use strict";\n) <> source, else: source + end + + relative_path = fn file -> + Path.relative_to(file, Path.join(["test", "test262", "test"])) + end + + setup_all do + {:ok, rt} = QuickBEAM.start(apis: false) + + on_exit(fn -> + QuickBEAM.stop(rt) + end) + + %{rt: rt} + end + + for file <- @selected_files do + source = File.read!(file) + relative = relative_path.(file) + meta = metadata.(source) + + cond do + module_file?.(file, source, meta.flags) -> + @tag skip: "module input" + test "QuickJS parser acceptance #{relative}" do + end + + unsupported_quickjs_feature?.(meta.features) -> + @tag skip: "unsupported QuickJS feature" + test "QuickJS parser acceptance #{relative}" do + end + + unsupported_quickjs_syntax_gap?.(source) -> + @tag skip: "unsupported QuickJS syntax edge" + test "QuickJS parser acceptance #{relative}" do + end + + true -> + source = audit_source.(source, meta.flags) + @tag timeout: @audit_file_timeout + test "QuickJS parser acceptance #{relative}", %{rt: rt} do + source = unquote(source) + relative = unquote(relative) + + quickjs = + case QuickBEAM.compile(rt, source) do + {:ok, _} -> + :ok + + {:error, %QuickBEAM.JSError{name: name, message: message}} -> + {:error, name, message} + end + + parser = + case QuickBEAM.JS.Parser.parse(source) do + {:ok, _} -> :ok + {:error, _program, errors} -> {:error, Enum.map(errors, & &1.message)} + end + + quickjs_accepted? = quickjs == :ok + parser_accepted? = parser == :ok + + assert quickjs_accepted? == parser_accepted?, """ + Acceptance mismatch for #{relative} + QuickJS: #{inspect(quickjs, limit: :infinity)} + Parser: #{inspect(parser, limit: :infinity)} + """ + end + end + end +end diff --git a/test/quickbeam_test.exs b/test/quickbeam_test.exs index 0a4e6f323..25e38f696 100644 --- a/test/quickbeam_test.exs +++ b/test/quickbeam_test.exs @@ -1,7 +1,9 @@ defmodule QuickBEAMTest do use ExUnit.Case, async: true - doctest QuickBEAM + unless System.get_env("QUICKBEAM_MODE") == "beam" do + doctest QuickBEAM + end setup do {:ok, rt} = QuickBEAM.start() @@ -60,6 +62,17 @@ defmodule QuickBEAMTest do assert {:ok, 42} = QuickBEAM.call(rt, "add", [10, 32]) end + test "beam eval keeps returned closure captures alive" do + {:ok, rt} = QuickBEAM.start(mode: :beam, apis: false) + + assert {:ok, {:closure, _, _} = closure} = + QuickBEAM.eval(rt, "(() => { const x = 1; return function f(){ return x } })()") + + assert 1 == QuickBEAM.VM.Interpreter.invoke(closure, [], 1_000_000) + QuickBEAM.stop(rt) + end + + @tag :nif_only test "arrow functions", %{rt: rt} do QuickBEAM.eval(rt, "globalThis.double = x => x * 2") assert {:ok, 84} = QuickBEAM.call(rt, "double", [42]) @@ -84,6 +97,7 @@ defmodule QuickBEAMTest do QuickBEAM.eval(rt, "if (") end + @tag :nif_only test "error has stack trace", %{rt: rt} do assert {:error, %QuickBEAM.JSError{stack: stack}} = QuickBEAM.eval(rt, ~s[throw new Error("test")]) @@ -108,11 +122,13 @@ defmodule QuickBEAMTest do assert {:ok, 42} = QuickBEAM.eval(rt, "Promise.resolve(42)") end + @tag :nif_only test "Promise.reject", %{rt: rt} do assert {:error, %QuickBEAM.JSError{message: "nope"}} = QuickBEAM.eval(rt, "Promise.reject(new Error('nope'))") end + @tag :nif_only test "async/await", %{rt: rt} do assert {:ok, 99} = QuickBEAM.eval(rt, "await Promise.resolve(99)") end @@ -124,6 +140,7 @@ defmodule QuickBEAMTest do end describe "timers" do + @tag :nif_only test "setTimeout", %{rt: rt} do QuickBEAM.eval( rt, @@ -134,6 +151,7 @@ defmodule QuickBEAMTest do assert {:ok, true} = QuickBEAM.eval(rt, "globalThis.fired") end + @tag :nif_only test "setTimeout with delay", %{rt: rt} do QuickBEAM.eval( rt, @@ -146,6 +164,7 @@ defmodule QuickBEAMTest do end describe "console" do + @tag :nif_only test "console.log outputs to stderr", %{rt: rt} do assert {:ok, nil} = QuickBEAM.eval(rt, ~s[console.log("test output")]) end @@ -159,6 +178,7 @@ defmodule QuickBEAMTest do end describe "reset" do + @tag :nif_only test "clears global state", %{rt: rt} do QuickBEAM.eval(rt, "globalThis.x = 42") assert {:ok, 42} = QuickBEAM.eval(rt, "globalThis.x") @@ -168,6 +188,7 @@ defmodule QuickBEAMTest do assert {:ok, "undefined"} = QuickBEAM.eval(rt, "typeof globalThis.x") end + @tag :nif_only test "functions still work after reset", %{rt: rt} do :ok = QuickBEAM.reset(rt) QuickBEAM.eval(rt, "function sq(x) { return x * x; }") @@ -176,6 +197,7 @@ defmodule QuickBEAMTest do end describe "Beam.call" do + @tag :nif_only test "simple handler" do {:ok, rt} = QuickBEAM.start( @@ -188,6 +210,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "string handler" do {:ok, rt} = QuickBEAM.start( @@ -200,6 +223,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "multiple args" do {:ok, rt} = QuickBEAM.start( @@ -212,6 +236,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "chained calls with await" do {:ok, rt} = QuickBEAM.start( @@ -233,6 +258,7 @@ defmodule QuickBEAMTest do end describe "isolation" do + @tag :nif_only test "multiple runtimes are isolated" do {:ok, rt1} = QuickBEAM.start() {:ok, rt2} = QuickBEAM.start() @@ -249,6 +275,7 @@ defmodule QuickBEAMTest do end describe "introspection" do + @tag :nif_only test "globals returns sorted list of all global names" do {:ok, rt} = QuickBEAM.start() {:ok, globals} = QuickBEAM.globals(rt) @@ -261,6 +288,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "globals with user_only: true excludes builtins" do {:ok, rt} = QuickBEAM.start() {:ok, empty} = QuickBEAM.globals(rt, user_only: true) @@ -275,6 +303,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "get_global returns primitive values" do {:ok, rt} = QuickBEAM.start() QuickBEAM.eval(rt, "globalThis.n = 42; globalThis.s = 'hello'; globalThis.b = true") @@ -285,12 +314,14 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "get_global returns nil for undefined" do {:ok, rt} = QuickBEAM.start() assert {:ok, nil} = QuickBEAM.get_global(rt, "nonexistent") QuickBEAM.stop(rt) end + @tag :nif_only test "get_global returns map for objects" do {:ok, rt} = QuickBEAM.start() QuickBEAM.eval(rt, "globalThis.obj = { x: 1, y: 2 }") @@ -298,6 +329,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "info returns handlers, memory, and global count" do {:ok, rt} = QuickBEAM.start(handlers: %{"greet" => fn [n] -> "Hi #{n}" end}) QuickBEAM.eval(rt, "globalThis.x = 1") @@ -313,6 +345,7 @@ defmodule QuickBEAMTest do end describe "bytecode" do + @tag :nif_only test "compile returns binary" do {:ok, rt} = QuickBEAM.start() {:ok, bytecode} = QuickBEAM.compile(rt, "1 + 2") @@ -321,6 +354,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "compile and load_bytecode round-trip" do {:ok, rt} = QuickBEAM.start() {:ok, bytecode} = QuickBEAM.compile(rt, "40 + 2") @@ -329,6 +363,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "bytecode transfers between runtimes" do {:ok, rt1} = QuickBEAM.start() {:ok, bytecode} = QuickBEAM.compile(rt1, "function mul(a, b) { return a * b }") @@ -341,12 +376,14 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt2) end + @tag :nif_only test "compile reports syntax errors" do {:ok, rt} = QuickBEAM.start() {:error, %QuickBEAM.JSError{}} = QuickBEAM.compile(rt, "function {") QuickBEAM.stop(rt) end + @tag :nif_only test "bytecode is compact binary" do {:ok, rt} = QuickBEAM.start() @@ -363,6 +400,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "compiled globals persist after load" do {:ok, rt} = QuickBEAM.start() {:ok, bytecode} = QuickBEAM.compile(rt, "globalThis.answer = 42") @@ -373,6 +411,7 @@ defmodule QuickBEAMTest do end describe "disasm" do + @tag :nif_only test "disasm/1 decodes bytecode without a runtime" do {:ok, rt} = QuickBEAM.start(apis: false) {:ok, bytecode} = QuickBEAM.compile(rt, "1 + 2") @@ -384,6 +423,7 @@ defmodule QuickBEAMTest do assert bc.opcodes != [] end + @tag :nif_only test "disasm/2 compiles and disassembles in one call" do {:ok, rt} = QuickBEAM.start(apis: false) @@ -399,6 +439,22 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only + test "disasm/2 returns raw beam_disasm output for beam runtimes" do + {:ok, rt} = QuickBEAM.start(apis: false, mode: :beam) + + {:ok, {:beam_file, _module, exports, _attributes, _compile_info, code}} = + QuickBEAM.disasm( + rt, + "function fib(n) { if (n <= 1) return n; return fib(n - 1) + fib(n - 2) }" + ) + + assert Enum.any?(exports, &match?({:run, arity, _} when arity in [0, 1], &1)) + assert Enum.any?(code, &match?({:function, :run, arity, _, _} when arity in [0, 1], &1)) + QuickBEAM.stop(rt) + end + + @tag :nif_only test "nested functions in constant pool" do {:ok, rt} = QuickBEAM.start(apis: false) @@ -412,6 +468,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "closure variables are reported" do {:ok, rt} = QuickBEAM.start(apis: false) @@ -424,11 +481,13 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "error on invalid bytecode" do assert {:error, _} = QuickBEAM.disasm("garbage") assert {:error, _} = QuickBEAM.disasm(<<>>) end + @tag :nif_only test "source text included when available" do {:ok, rt} = QuickBEAM.start(apis: false) @@ -439,6 +498,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt) end + @tag :nif_only test "opcodes include byte offsets" do {:ok, rt} = QuickBEAM.start(apis: false) {:ok, bc} = QuickBEAM.disasm(rt, "1 + 2") @@ -453,6 +513,7 @@ defmodule QuickBEAMTest do end describe "resource limits" do + @tag :nif_only test "max_stack_size allows deeper recursion" do code = "function deep(n) { return n <= 0 ? 0 : deep(n - 1) }; deep(50)" @@ -465,6 +526,7 @@ defmodule QuickBEAMTest do QuickBEAM.stop(rt_large) end + @tag :nif_only test "memory_limit caps allocation" do {:ok, rt} = QuickBEAM.start(memory_limit: 1024 * 1024) diff --git a/test/support/gen_test262_skip.exs b/test/support/gen_test262_skip.exs new file mode 100644 index 000000000..0ef997353 --- /dev/null +++ b/test/support/gen_test262_skip.exs @@ -0,0 +1,52 @@ +# Generates test/test262_skip.txt by running all test262 tests through the +# native QuickJS NIF and recording failures. +# +# Usage: MIX_ENV=test mix run test/support/gen_test262_skip.exs + +categories = ~w( + language/expressions/addition language/expressions/subtraction + language/expressions/multiplication language/expressions/division + language/expressions/modulus language/expressions/typeof + language/expressions/void language/expressions/comma + language/expressions/conditional language/expressions/logical-and + language/expressions/logical-or language/expressions/logical-not + language/expressions/equals language/expressions/does-not-equals + language/expressions/strict-equals language/expressions/strict-does-not-equal + language/expressions/greater-than language/expressions/greater-than-or-equal + language/expressions/less-than language/expressions/less-than-or-equal + language/expressions/bitwise-and language/expressions/bitwise-or + language/expressions/bitwise-xor language/expressions/bitwise-not + language/expressions/left-shift language/expressions/right-shift + language/expressions/unsigned-right-shift + language/expressions/in language/expressions/instanceof + language/expressions/new language/expressions/this + language/expressions/delete + language/expressions/prefix-increment language/expressions/prefix-decrement + language/expressions/postfix-increment language/expressions/postfix-decrement + language/expressions/unary-minus language/expressions/unary-plus + language/statements/if language/statements/return language/statements/switch + language/statements/throw language/statements/try + language/statements/do-while language/statements/while + language/statements/for language/statements/for-in + language/statements/break language/statements/continue + language/statements/block language/statements/empty + language/statements/labeled language/statements/with +) + +{:ok, rt} = QuickBEAM.start() +failures = QuickBEAM.Test262.build_nif_failures(rt, categories) +QuickBEAM.stop(rt) + +lines = failures |> Enum.sort() +out = Path.expand("../test262_skip.txt", __DIR__) + +content = """ +# QuickJS NIF failures — tests that fail on native QuickJS, +# so they cannot be tested on the BEAM VM either. +# Regenerate: MIX_ENV=test mix run test/support/gen_test262_skip.exs +# #{length(lines)} entries +#{Enum.join(lines, "\n")} +""" + +File.write!(out, content) +IO.puts("Wrote #{length(lines)} entries to #{out}") diff --git a/test/support/test262.ex b/test/support/test262.ex new file mode 100644 index 000000000..11f16309c --- /dev/null +++ b/test/support/test262.ex @@ -0,0 +1,80 @@ +defmodule QuickBEAM.Test262 do + @moduledoc false + + @root Path.expand("../test262", __DIR__) + @harness_dir Path.join(@root, "harness") + + def root, do: @root + def available?, do: File.dir?(Path.join(@root, "test")) + + def find_tests(category) do + Path.join([@root, "test", category, "**/*.js"]) + |> Path.wildcard() + |> Enum.reject(&String.contains?(&1, "_FIXTURE")) + |> Enum.sort() + end + + def relative_path(file), do: Path.relative_to(file, Path.join(@root, "test")) + + def parse_metadata(source) do + with [_, rest] <- String.split(source, "/*---", parts: 2), + [yaml, _] <- String.split(rest, "---*/", parts: 2) do + YamlElixir.read_from_string!(yaml) + else + _ -> %{} + end + end + + def harness_source(includes \\ []) do + extra = Enum.map_join(includes, "\n", &read_harness/1) + + test262_error() <> + "\n" <> read_harness("sta.js") <> "\n" <> read_harness("assert.js") <> "\n" <> extra + end + + def load_skip_list do + Path.expand("../test262_skip.txt", __DIR__) + |> File.stream!() + |> Stream.map(&String.trim/1) + |> Stream.reject(&(String.starts_with?(&1, "#") or &1 == "")) + |> MapSet.new() + end + + def build_nif_failures(rt, categories) do + for category <- categories, + file <- find_tests(category), + reduce: MapSet.new() do + acc -> + source = File.read!(file) + meta = parse_metadata(source) + + if "async" in flags(meta) or "module" in flags(meta) do + acc + else + full = harness_source(includes(meta)) <> "\n" <> source + + pass = + try do + match?({:ok, _}, QuickBEAM.eval(rt, full)) + catch + _, _ -> false + end + + if pass, do: acc, else: MapSet.put(acc, relative_path(file)) + end + end + end + + defp flags(meta), do: Map.get(meta, "flags", []) + defp includes(meta), do: Map.get(meta, "includes", []) + + defp read_harness(name) do + path = Path.join(@harness_dir, name) + if File.exists?(path), do: File.read!(path), else: "" + end + + defp test262_error do + ~s[function Test262Error(m){this.message=m||"";this.name="Test262Error"}] <> + ~s[Test262Error.prototype.toString=function(){return "Test262Error: "+this.message};] + end +end diff --git a/test/test262 b/test/test262 new file mode 160000 index 000000000..d5e73fc8d --- /dev/null +++ b/test/test262 @@ -0,0 +1 @@ +Subproject commit d5e73fc8d2c663554fb72e2380a8c2bc1a318a33 diff --git a/test/test262_skip.txt b/test/test262_skip.txt new file mode 100644 index 000000000..2982d2e67 --- /dev/null +++ b/test/test262_skip.txt @@ -0,0 +1,913 @@ +# QuickJS NIF failures — tests that fail on native QuickJS, +# so they cannot be tested on the BEAM VM either. +# Regenerate: MIX_ENV=test mix run test/support/gen_test262_skip.exs +# 909 entries +language/expressions/addition/S11.6.1_A2.1_T2.js +language/expressions/addition/S11.6.1_A2.1_T3.js +language/expressions/addition/S11.6.1_A2.4_T3.js +language/expressions/bitwise-and/S11.10.1_A2.1_T2.js +language/expressions/bitwise-and/S11.10.1_A2.1_T3.js +language/expressions/bitwise-and/S11.10.1_A2.4_T3.js +language/expressions/bitwise-not/S11.4.8_A2.1_T2.js +language/expressions/bitwise-or/S11.10.3_A2.1_T2.js +language/expressions/bitwise-or/S11.10.3_A2.1_T3.js +language/expressions/bitwise-or/S11.10.3_A2.4_T3.js +language/expressions/bitwise-xor/S11.10.2_A2.1_T2.js +language/expressions/bitwise-xor/S11.10.2_A2.1_T3.js +language/expressions/bitwise-xor/S11.10.2_A2.4_T3.js +language/expressions/comma/S11.14_A2.1_T2.js +language/expressions/comma/S11.14_A2.1_T3.js +language/expressions/comma/tco-final.js +language/expressions/conditional/S11.12_A2.1_T2.js +language/expressions/conditional/S11.12_A2.1_T3.js +language/expressions/conditional/S11.12_A2.1_T4.js +language/expressions/conditional/in-branch-2.js +language/expressions/conditional/in-condition.js +language/expressions/conditional/tco-cond.js +language/expressions/conditional/tco-pos.js +language/expressions/delete/11.4.1-3-3.js +language/expressions/delete/11.4.1-4-a-1-s.js +language/expressions/delete/11.4.1-4-a-2-s.js +language/expressions/delete/11.4.1-4.a-1.js +language/expressions/delete/11.4.1-4.a-2.js +language/expressions/delete/11.4.1-4.a-3-s.js 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+language/expressions/in/private-field-invalid-identifier-complex.js +language/expressions/in/private-field-invalid-identifier-simple.js +language/expressions/in/private-field-invalid-rhs.js +language/expressions/in/private-field-presence-accessor.js +language/expressions/in/private-field-presence-field-shadowed.js +language/expressions/in/private-field-presence-method-shadowed.js +language/expressions/in/private-field-presence-method.js +language/expressions/in/private-field-rhs-await-absent.js +language/expressions/in/private-field-rhs-non-object.js +language/expressions/in/private-field-rhs-unresolvable.js +language/expressions/in/private-field-rhs-yield-absent.js +language/expressions/in/private-field-rhs-yield-present.js +language/expressions/in/rhs-yield-absent-strict.js +language/expressions/instanceof/S11.8.6_A2.1_T2.js +language/expressions/instanceof/S11.8.6_A2.1_T3.js +language/expressions/instanceof/S11.8.6_A2.4_T3.js +language/expressions/left-shift/S11.7.1_A2.1_T2.js 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+language/statements/with/decl-async-fun.js +language/statements/with/decl-async-gen.js +language/statements/with/decl-cls.js +language/statements/with/decl-const.js +language/statements/with/decl-fun.js +language/statements/with/decl-gen.js +language/statements/with/decl-let.js +language/statements/with/get-binding-value-call-with-proxy-env.js +language/statements/with/get-binding-value-idref-with-proxy-env.js +language/statements/with/get-mutable-binding-binding-deleted-in-get-unscopables-strict-mode.js +language/statements/with/labelled-fn-stmt.js +language/statements/with/let-array-with-newline.js +language/statements/with/scope-var-open.js +language/statements/with/set-mutable-binding-binding-deleted-with-typed-array-in-proto-chain.js +language/statements/with/set-mutable-binding-idref-compound-assign-with-proxy-env.js +language/statements/with/set-mutable-binding-idref-with-proxy-env.js +language/statements/with/strict-fn-decl-nested-1.js +language/statements/with/strict-fn-decl-nested-2.js +language/statements/with/strict-fn-decl.js +language/statements/with/strict-fn-expr.js +language/statements/with/strict-fn-method.js +language/statements/with/strict-script.js diff --git a/test/test_helper.exs b/test/test_helper.exs index 94bb91a05..679f96516 100644 --- a/test/test_helper.exs +++ b/test/test_helper.exs @@ -21,7 +21,15 @@ unless File.exists?(test_addon_out) and {_, 0} = System.cmd("cc", args, stderr_to_stdout: true) end -ExUnit.start() +# Load shared test modules + +beam_mode? = System.get_env("QUICKBEAM_MODE") == "beam" + +exclude = + [:pending_beam, :pending_class, :js_engine, :test262, :quickjs_acceptance_audit] ++ + if(beam_mode?, do: [:nif_only], else: []) + +ExUnit.start(exclude: exclude) # Force garbage collection before BEAM exits to prevent NIF finalizer crashes. # On OTP 27.0.x, the BEAM shutdown races with QuickJS worker thread cleanup. diff --git a/test/vm/assert.js b/test/vm/assert.js new file mode 100644 index 000000000..c8240c88a --- /dev/null +++ b/test/vm/assert.js @@ -0,0 +1,49 @@ +export function assert(actual, expected, message) { + if (arguments.length === 1) + expected = true; + + if (typeof actual === typeof expected) { + if (actual === expected) { + if (actual !== 0 || (1 / actual) === (1 / expected)) + return; + } + if (typeof actual === 'number') { + if (isNaN(actual) && isNaN(expected)) + return; + } + if (typeof actual === 'object') { + if (actual !== null && expected !== null + && actual.constructor === expected.constructor + && actual.toString() === expected.toString()) + return; + } + } + throw Error("assertion failed: got |" + actual + "|" + + ", expected |" + expected + "|" + + (message ? " (" + message + ")" : "")); +} + +export function assertThrows(err, func) +{ + var ex; + ex = false; + try { + func(); + } catch(e) { + ex = true; + assert(e instanceof err); + } + assert(ex, true, "exception expected"); +} + +export function assertArrayEquals(a, b) +{ + if (!Array.isArray(a) || !Array.isArray(b)) + return assert(false); + + assert(a.length, b.length); + + a.forEach((value, idx) => { + assert(b[idx], value); + }); +} diff --git a/test/vm/beam_compat_test.exs b/test/vm/beam_compat_test.exs new file mode 100644 index 000000000..0e9368378 --- /dev/null +++ b/test/vm/beam_compat_test.exs @@ -0,0 +1,1944 @@ +defmodule QuickBEAM.VM.BeamCompatTest do + @moduledoc """ + Mirrors existing QuickBEAM tests through beam mode. + + Only tests self-contained JS expressions (no cross-eval state, handlers, + promises, timers, or vars — those need NIF integration). + """ + use ExUnit.Case, async: true + + setup_all do + {:ok, rt} = QuickBEAM.start() + %{rt: rt} + end + + defp ev(rt, code), do: QuickBEAM.eval(rt, code, mode: :beam) + + defp ok(rt, code, expected) do + assert {:ok, result} = ev(rt, code) + + assert result == expected, + "#{code}\n expected: #{inspect(expected)}\n got: #{inspect(result)}" + end + + # ── Basic types (mirrors quickbeam_test.exs "basic types") ── + + describe "basic types" do + test "numbers", %{rt: rt} do + ok(rt, "1 + 2", 3) + ok(rt, "42", 42) + ok(rt, "3.14", 3.14) + ok(rt, "0", 0) + ok(rt, "-1", -1) + ok(rt, "1e3", 1000.0) + end + + test "booleans", %{rt: rt} do + ok(rt, "true", true) + ok(rt, "false", false) + end + + test "null and undefined", %{rt: rt} do + ok(rt, "null", nil) + ok(rt, "undefined", nil) + end + + test "strings", %{rt: rt} do + ok(rt, ~s["hello"], "hello") + ok(rt, ~s[""], "") + ok(rt, ~s["hello world"], "hello world") + ok(rt, ~s["he" + "llo"], "hello") + end + + test "arrays", %{rt: rt} do + ok(rt, "[1, 2, 3]", [1, 2, 3]) + ok(rt, "[]", []) + ok(rt, ~s|["a", 1, true]|, ["a", 1, true]) + end + + test "objects", %{rt: rt} do + ok(rt, "({a: 1})", %{"a" => 1}) + ok(rt, ~s[({name: "QuickBEAM", version: 1})], %{"name" => "QuickBEAM", "version" => 1}) + end + end + + # ── Arithmetic (mirrors quickbeam_test.exs) ── + + describe "arithmetic" do + test "basic operations", %{rt: rt} do + ok(rt, "2 + 3", 5) + ok(rt, "10 - 3", 7) + ok(rt, "4 * 5", 20) + ok(rt, "10 / 2", 5.0) + ok(rt, "10 % 3", 1) + end + + test "precedence", %{rt: rt} do + ok(rt, "2 + 3 * 4", 14) + ok(rt, "(2 + 3) * 4", 20) + end + + test "unary", %{rt: rt} do + ok(rt, "-5", -5) + ok(rt, "+5", 5) + ok(rt, "-(3 + 2)", -5) + end + + test "increment/decrement", %{rt: rt} do + ok(rt, "(function(){ var x = 5; return x++ })()", 5) + ok(rt, "(function(){ var x = 5; return ++x })()", 6) + ok(rt, "(function(){ var x = 5; return x-- })()", 5) + ok(rt, "(function(){ var x = 5; return --x })()", 4) + end + + test "compound assignment", %{rt: rt} do + ok(rt, "(function(){ var x = 10; x += 5; return x })()", 15) + ok(rt, "(function(){ var x = 10; x -= 3; return x })()", 7) + ok(rt, "(function(){ var x = 10; x *= 2; return x })()", 20) + ok(rt, "(function(){ var x = 10; x /= 2; return x })()", 5.0) + ok(rt, "(function(){ var x = 10; x %= 3; return x })()", 1) + end + end + + # ── Comparison (mirrors quickbeam_test.exs) ── + + describe "comparison" do + test "strict equality", %{rt: rt} do + ok(rt, "1 === 1", true) + ok(rt, "1 === 2", false) + ok(rt, ~s["a" === "a"], true) + ok(rt, ~s["a" === "b"], false) + ok(rt, "null === null", true) + ok(rt, "undefined === undefined", true) + ok(rt, "null === undefined", false) + end + + test "strict inequality", %{rt: rt} do + ok(rt, "1 !== 2", true) + ok(rt, "1 !== 1", false) + end + + test "abstract equality", %{rt: rt} do + ok(rt, "1 == 1", true) + ok(rt, "1 == '1'", true) + ok(rt, "null == undefined", true) + ok(rt, "0 == false", true) + end + + test "relational", %{rt: rt} do + ok(rt, "1 < 2", true) + ok(rt, "2 < 1", false) + ok(rt, "1 <= 1", true) + ok(rt, "1 > 0", true) + ok(rt, "1 >= 1", true) + end + end + + # ── Logical operators ── + + describe "logical operators" do + test "and/or", %{rt: rt} do + ok(rt, "true && true", true) + ok(rt, "true && false", false) + ok(rt, "false || true", true) + ok(rt, "false || false", false) + end + + test "short-circuit", %{rt: rt} do + ok(rt, "1 && 2", 2) + ok(rt, "0 && 2", 0) + ok(rt, "1 || 2", 1) + ok(rt, "0 || 2", 2) + ok(rt, "null || 'default'", "default") + end + + test "not", %{rt: rt} do + ok(rt, "!true", false) + ok(rt, "!false", true) + ok(rt, "!0", true) + ok(rt, "!null", true) + ok(rt, "!1", false) + ok(rt, "!!1", true) + end + end + + # ── Strings (mirrors eval_vars_test patterns) ── + + describe "string operations" do + test "concatenation", %{rt: rt} do + ok(rt, ~s|"hello" + " " + "world"|, "hello world") + end + + test "template literals", %{rt: rt} do + ok(rt, ~s|`${1 + 2}`|, "3") + ok(rt, ~s|(function(){ var name = "World"; return `Hello ${name}` })()|, "Hello World") + end + + test "length", %{rt: rt} do + ok(rt, ~s|"hello".length|, 5) + ok(rt, ~s|"".length|, 0) + end + + test "charCodeAt", %{rt: rt} do + ok(rt, ~s|"A".charCodeAt(0)|, 65) + end + + test "indexOf", %{rt: rt} do + ok(rt, ~s|"hello".indexOf("ll")|, 2) + ok(rt, ~s|"hello".indexOf("xx")|, -1) + end + + test "slice", %{rt: rt} do + ok(rt, ~s|"hello".slice(1, 3)|, "el") + ok(rt, ~s|"hello".slice(2)|, "llo") + end + + test "toUpperCase/toLowerCase", %{rt: rt} do + ok(rt, ~s|"hello".toUpperCase()|, "HELLO") + ok(rt, ~s|"HELLO".toLowerCase()|, "hello") + end + + test "trim", %{rt: rt} do + ok(rt, ~s|" hi ".trim()|, "hi") + end + + test "split", %{rt: rt} do + ok(rt, ~s|"a,b,c".split(",")|, ["a", "b", "c"]) + ok(rt, ~s|"abc".split("")|, ["a", "b", "c"]) + end + + test "replace", %{rt: rt} do + ok(rt, ~s|"hello".replace("l", "r")|, "herlo") + end + + test "repeat", %{rt: rt} do + ok(rt, ~s|"ab".repeat(3)|, "ababab") + end + + test "includes", %{rt: rt} do + ok(rt, ~s|"hello".includes("ell")|, true) + ok(rt, ~s|"hello".includes("xyz")|, false) + end + + test "startsWith/endsWith", %{rt: rt} do + ok(rt, ~s|"hello".startsWith("hel")|, true) + ok(rt, ~s|"hello".endsWith("llo")|, true) + ok(rt, ~s|"hello".startsWith("xyz")|, false) + end + + test "padStart/padEnd", %{rt: rt} do + ok(rt, ~s|"5".padStart(3, "0")|, "005") + ok(rt, ~s|"5".padEnd(3, "0")|, "500") + end + + test "substring", %{rt: rt} do + ok(rt, ~s|"hello".substring(1, 3)|, "el") + end + end + + # ── Arrays (mirrors quickbeam_test.exs array patterns) ── + + describe "arrays" do + test "literal", %{rt: rt} do + ok(rt, "[1, 2, 3]", [1, 2, 3]) + ok(rt, "[]", []) + end + + test "indexing", %{rt: rt} do + ok(rt, "[10, 20, 30][1]", 20) + ok(rt, "[10, 20, 30][0]", 10) + end + + test "length", %{rt: rt} do + ok(rt, "[1, 2, 3].length", 3) + ok(rt, "[].length", 0) + end + + test "push/pop", %{rt: rt} do + ok(rt, "(function(){ var a = [1]; a.push(2); return a.length })()", 2) + ok(rt, "(function(){ var a = [1,2]; return a.pop() })()", 2) + ok(rt, "(function(){ var a = [1,2]; a.pop(); return a.length })()", 1) + end + + test "shift/unshift", %{rt: rt} do + ok(rt, "(function(){ var a = [1,2,3]; a.shift(); return a })()", [2, 3]) + ok(rt, "(function(){ var a = [1]; a.unshift(0); return a })()", [0, 1]) + end + + test "map", %{rt: rt} do + ok(rt, "[1,2,3].map(function(x){ return x*2 })", [2, 4, 6]) + ok(rt, "[1,2,3].map(function(x){ return x*2 })[1]", 4) + end + + test "filter", %{rt: rt} do + ok(rt, "[1,2,3,4].filter(function(x){ return x > 2 })", [3, 4]) + ok(rt, "[1,2,3,4].filter(function(x){ return x > 2 }).length", 2) + end + + test "reduce", %{rt: rt} do + ok(rt, "[1,2,3].reduce(function(a,b){ return a+b }, 0)", 6) + ok(rt, "[1,2,3].reduce(function(a,b){ return a*b }, 1)", 6) + end + + test "indexOf", %{rt: rt} do + ok(rt, "[10,20,30].indexOf(20)", 1) + ok(rt, "[10,20,30].indexOf(99)", -1) + end + + test "includes", %{rt: rt} do + ok(rt, "[10,20,30].includes(20)", true) + ok(rt, "[10,20,30].includes(99)", false) + end + + test "slice", %{rt: rt} do + ok(rt, "[1,2,3,4].slice(1,3)", [2, 3]) + ok(rt, "[1,2,3,4].slice(1,3).length", 2) + end + + test "splice", %{rt: rt} do + ok(rt, "(function(){ var a = [1,2,3,4]; a.splice(1,2); return a })()", [1, 4]) + end + + test "join", %{rt: rt} do + ok(rt, ~s|[1,2,3].join("-")|, "1-2-3") + ok(rt, ~s|[1,2,3].join()|, "1,2,3") + end + + test "concat", %{rt: rt} do + ok(rt, "[1,2].concat([3,4])", [1, 2, 3, 4]) + ok(rt, "[1,2].concat([3,4]).length", 4) + end + + test "reverse", %{rt: rt} do + ok(rt, "(function(){ var a = [1,2,3]; a.reverse(); return a })()", [3, 2, 1]) + end + + test "sort", %{rt: rt} do + ok(rt, "(function(){ var a = [3,1,2]; a.sort(); return a })()", [1, 2, 3]) + end + + test "find/findIndex", %{rt: rt} do + ok(rt, "[1,2,3,4].find(function(x){ return x > 2 })", 3) + ok(rt, "[1,2,3,4].findIndex(function(x){ return x > 2 })", 2) + end + + test "every/some", %{rt: rt} do + ok(rt, "[1,2,3].every(function(x){ return x > 0 })", true) + ok(rt, "[1,2,3].every(function(x){ return x > 1 })", false) + ok(rt, "[1,2,3].some(function(x){ return x > 2 })", true) + ok(rt, "[1,2,3].some(function(x){ return x > 5 })", false) + end + + test "flat", %{rt: rt} do + ok(rt, "[1,[2,3],[4,[5]]].flat()", [1, 2, 3, 4, [5]]) + end + + test "forEach", %{rt: rt} do + ok(rt, "(function(){ var s=0; [1,2,3].forEach(function(x){ s+=x }); return s })()", 6) + end + + test "forEach with closure mutation", %{rt: rt} do + ok(rt, "(function(){ var s=0; [1,2,3].forEach(function(x){ s += x }); return s })()", 6) + end + + test "Array.isArray", %{rt: rt} do + ok(rt, "Array.isArray([1,2])", true) + ok(rt, "Array.isArray(1)", false) + ok(rt, ~s|Array.isArray("hi")|, false) + end + end + + # ── Objects (mirrors quickbeam_test.exs object patterns) ── + + describe "objects" do + test "property access", %{rt: rt} do + ok(rt, "({a: 1}).a", 1) + ok(rt, ~s|({name: "test"}).name|, "test") + end + + test "nested", %{rt: rt} do + ok(rt, "({a: {b: 2}}).a.b", 2) + end + + test "string keys", %{rt: rt} do + ok(rt, ~s|({"name": "test"}).name|, "test") + end + + test "computed keys", %{rt: rt} do + ok(rt, ~s|(function(){ var k = "x"; var o = {}; o[k] = 1; return o.x })()|, 1) + end + + test "Object.keys", %{rt: rt} do + ok(rt, ~s|Object.keys({a: 1, b: 2})|, ["a", "b"]) + end + + test "Object.values", %{rt: rt} do + ok(rt, "Object.values({a: 1, b: 2})", [1, 2]) + end + + test "Object.entries", %{rt: rt} do + ok(rt, ~s|Object.entries({a: 1})|, [["a", 1]]) + end + + test "Object.assign", %{rt: rt} do + ok(rt, ~s|Object.assign({a: 1}, {b: 2})|, %{"a" => 1, "b" => 2}) + end + + test "in operator", %{rt: rt} do + ok(rt, ~s|"a" in {a: 1}|, true) + ok(rt, ~s|"b" in {a: 1}|, false) + end + + test "delete", %{rt: rt} do + ok(rt, "(function(){ var o = {a: 1, b: 2}; delete o.a; return Object.keys(o) })()", ["b"]) + end + end + + # ── Functions (mirrors quickbeam_test.exs function patterns) ── + + describe "functions" do + test "anonymous IIFE", %{rt: rt} do + ok(rt, "(function(x) { return x * 2; })(21)", 42) + end + + test "closure captures variable", %{rt: rt} do + ok(rt, "(function() { let x = 10; return (function() { return x })() })()", 10) + end + + test "closure with argument", %{rt: rt} do + ok(rt, "(function(x) { return (function() { return x })() })(42)", 42) + end + + test "arrow function", %{rt: rt} do + ok(rt, "(function(){ var double = x => x * 2; return double(21) })()", 42) + end + + test "recursive function", %{rt: rt} do + ok(rt, "(function f(n){ return n <= 1 ? n : f(n-1) + f(n-2) })(10)", 55) + end + + test "higher-order function", %{rt: rt} do + ok( + rt, + "(function(){ function apply(f, x) { return f(x) }; return apply(function(x){ return x+1 }, 5) })()", + 6 + ) + end + + test "default parameter", %{rt: rt} do + ok(rt, "(function(x, y = 10){ return x + y })(5)", 15) + ok(rt, "(function(x, y = 10){ return x + y })(5, 20)", 25) + end + + test "rest parameter", %{rt: rt} do + ok(rt, "(function(...args){ return args.length })(1,2,3)", 3) + ok(rt, "(function(...args){ return args })(1,2,3)", [1, 2, 3]) + end + end + + # ── Control flow (mirrors quickbeam_test.exs) ── + + describe "control flow" do + test "if/else", %{rt: rt} do + ok(rt, "(function(){ if(true) return 1; return 0 })()", 1) + ok(rt, "(function(){ if(false) return 1; return 0 })()", 0) + ok(rt, "(function(){ var x; if(true) x = 1; else x = 2; return x })()", 1) + end + + test "ternary", %{rt: rt} do + ok(rt, "true ? 'yes' : 'no'", "yes") + ok(rt, "false ? 'yes' : 'no'", "no") + ok(rt, "1 > 0 ? 'pos' : 'non-pos'", "pos") + end + + test "while loop", %{rt: rt} do + ok(rt, "(function(){ var s=0,i=0; while(i<5){s+=i;i++} return s })()", 10) + end + + test "for loop", %{rt: rt} do + ok(rt, "(function(){ var s=0; for(var i=0;i<5;i++){s+=i} return s })()", 10) + end + + test "for-in loop", %{rt: rt} do + ok( + rt, + ~s|(function(){ var o = {a:1,b:2}; var keys = []; for(var k in o) keys.push(k); return keys })()|, + ["a", "b"] + ) + end + + test "do-while", %{rt: rt} do + ok(rt, "(function(){ var s=0,i=0; do { s+=i; i++ } while(i<5); return s })()", 10) + end + + test "break", %{rt: rt} do + ok( + rt, + "(function(){ var s=0; for(var i=0;i<10;i++){ if(i>2) break; s+=i } return s })()", + 3 + ) + end + + test "continue", %{rt: rt} do + ok( + rt, + "(function(){ var s=0; for(var i=0;i<5;i++){ if(i===2) continue; s+=i } return s })()", + 8 + ) + end + + test "switch", %{rt: rt} do + ok( + rt, + "(function(n){ switch(n){ case 1: return 'one'; case 2: return 'two'; default: return 'other' } })(1)", + "one" + ) + + ok( + rt, + "(function(n){ switch(n){ case 1: return 'one'; case 2: return 'two'; default: return 'other' } })(3)", + "other" + ) + end + end + + # ── typeof ── + + describe "typeof" do + test "primitives", %{rt: rt} do + ok(rt, "typeof 42", "number") + ok(rt, "typeof 'hi'", "string") + ok(rt, "typeof true", "boolean") + ok(rt, "typeof undefined", "undefined") + ok(rt, "typeof function(){}", "function") + ok(rt, "typeof null", "object") + end + + test "objects", %{rt: rt} do + ok(rt, "typeof {}", "object") + ok(rt, "typeof []", "object") + end + end + + # ── Destructuring ── + + describe "destructuring" do + test "array destructuring", %{rt: rt} do + ok(rt, "(function(){ var [a,b] = [1,2]; return a + b })()", 3) + end + + test "object destructuring", %{rt: rt} do + ok(rt, "(function(){ var {a,b} = {a:1,b:2}; return a + b })()", 3) + end + + test "nested destructuring", %{rt: rt} do + ok(rt, "(function(){ var {a: {b}} = {a: {b: 42}}; return b })()", 42) + end + end + + # ── Spread/rest ── + + describe "spread" do + test "spread array", %{rt: rt} do + ok(rt, "(function(){ var a = [1,2]; var b = [...a, 3]; return b })()", [1, 2, 3]) + end + + test "spread object", %{rt: rt} do + ok(rt, "(function(){ var a = {x: 1}; var b = {...a, y: 2}; return b })()", %{ + "x" => 1, + "y" => 2 + }) + end + + test "spread in function call", %{rt: rt} do + ok( + rt, + "(function(){ function add(a,b,c){ return a+b+c } var args = [1,2,3]; return add(...args) })()", + 6 + ) + end + end + + # ── Math (mirrors quickbeam_test.exs built-ins) ── + + describe "Math" do + test "floor/ceil/round", %{rt: rt} do + ok(rt, "Math.floor(3.7)", 3) + ok(rt, "Math.ceil(3.1)", 4) + ok(rt, "Math.round(3.5)", 4) + end + + test "abs", %{rt: rt} do + ok(rt, "Math.abs(-5)", 5) + ok(rt, "Math.abs(5)", 5) + end + + test "max/min", %{rt: rt} do + ok(rt, "Math.max(1, 2, 3)", 3) + ok(rt, "Math.min(1, 2, 3)", 1) + end + + test "sqrt/pow", %{rt: rt} do + ok(rt, "Math.sqrt(9)", 3.0) + ok(rt, "Math.pow(2, 3)", 8.0) + end + + test "constants", %{rt: rt} do + assert {:ok, val} = ev(rt, "Math.PI") + assert val > 3.14 and val < 3.15 + assert {:ok, val} = ev(rt, "Math.E") + assert val > 2.71 and val < 2.72 + end + + test "trunc/sign", %{rt: rt} do + ok(rt, "Math.trunc(3.7)", 3) + ok(rt, "Math.trunc(-3.7)", -3) + ok(rt, "Math.sign(5)", 1) + ok(rt, "Math.sign(-5)", -1) + ok(rt, "Math.sign(0)", 0) + end + + test "random", %{rt: rt} do + assert {:ok, val} = ev(rt, "Math.random()") + assert is_float(val) and val >= 0.0 and val < 1.0 + end + end + + # ── JSON ── + + describe "JSON" do + test "parse", %{rt: rt} do + ok(rt, ~s|JSON.parse('{"a":1}').a|, 1) + end + + test "stringify", %{rt: rt} do + ok(rt, ~s|JSON.stringify({a: 1})|, ~s|{"a":1}|) + end + + test "round-trip", %{rt: rt} do + ok(rt, ~s|JSON.parse(JSON.stringify({x: 1, y: "hi"})).y|, "hi") + end + end + + # ── parseInt/parseFloat ── + + describe "global functions" do + test "parseInt", %{rt: rt} do + ok(rt, ~s|parseInt("42")|, 42) + ok(rt, ~s|parseInt("0xff", 16)|, 255) + ok(rt, ~s|parseInt("3.14")|, 3) + end + + test "parseFloat", %{rt: rt} do + ok(rt, ~s|parseFloat("3.14")|, 3.14) + ok(rt, ~s|parseFloat("42")|, 42.0) + end + + test "isNaN", %{rt: rt} do + ok(rt, "isNaN(NaN)", true) + ok(rt, "isNaN(42)", false) + end + + test "isFinite", %{rt: rt} do + ok(rt, "isFinite(42)", true) + ok(rt, "isFinite(Infinity)", false) + ok(rt, "isFinite(NaN)", false) + end + end + + # ── Try/catch (mirrors quickbeam_test.exs error patterns) ── + + describe "try/catch" do + test "catch Error", %{rt: rt} do + ok( + rt, + ~s|(function(){ try { throw new Error("boom") } catch(e) { return e.message } })()|, + "boom" + ) + end + + test "catch thrown value", %{rt: rt} do + ok( + rt, + ~s|(function(){ try { throw "just a string" } catch(e) { return e } })()|, + "just a string" + ) + end + + test "finally", %{rt: rt} do + ok(rt, "(function(){ var x = 0; try { x = 1 } finally { x = 2 } return x })()", 2) + end + + test "try/catch/finally", %{rt: rt} do + ok( + rt, + ~s|(function(){ var x=0; try { throw "err" } catch(e) { x=1 } finally { x+=1 } return x })()|, + 2 + ) + end + end + + # ── console (mirrors quickbeam_test.exs) ── + + describe "console" do + test "console.log returns undefined", %{rt: rt} do + ok(rt, ~s|console.log("test")|, nil) + end + end + + # ── Closures (mirrors quickbeam_test.exs) ── + + describe "closures" do + test "mutable closure", %{rt: rt} do + ok( + rt, + "(function(){ var count = 0; function inc() { count++ } inc(); inc(); return count })()", + 2 + ) + end + + test "multiple closures share state", %{rt: rt} do + ok( + rt, + "(function(){ var n = 0; function inc() { n++ } function get() { return n } inc(); inc(); return get() })()", + 2 + ) + end + + test "closure over loop variable", %{rt: rt} do + ok( + rt, + "(function(){ var fns = []; for(var i = 0; i < 3; i++) { fns.push(function(){ return i }) } return fns[1]() })()", + 3 + ) + end + + test "closure over let loop variable", %{rt: rt} do + ok( + rt, + "(function(){ var fns = []; for(let i = 0; i < 3; i++) { fns.push(function(){ return i }) } return fns[1]() })()", + 1 + ) + end + + test "counter factory", %{rt: rt} do + ok( + rt, + "(function(){ function counter() { var n = 0; return function() { return ++n } } var c = counter(); c(); return c() })()", + 2 + ) + end + end + + # ── Errors (mirrors quickbeam_test.exs error patterns) ── + + describe "errors" do + test "throw new Error", %{rt: rt} do + assert {:error, %QuickBEAM.JSError{message: "boom"}} = ev(rt, ~s|throw new Error("boom")|) + end + + test "throw string", %{rt: rt} do + assert {:error, %QuickBEAM.JSError{message: "just a string"}} = + ev(rt, ~s|throw "just a string"|) + end + + test "reference error", %{rt: rt} do + assert {:error, %QuickBEAM.JSError{name: "ReferenceError"}} = ev(rt, "undeclaredVar") + end + end + + # ── Bitwise operators ── + + describe "bitwise operators" do + test "and/or/xor", %{rt: rt} do + ok(rt, "5 & 3", 1) + ok(rt, "5 | 3", 7) + ok(rt, "5 ^ 3", 6) + end + + test "shift", %{rt: rt} do + ok(rt, "1 << 3", 8) + ok(rt, "8 >> 2", 2) + ok(rt, "-1 >>> 1", 2_147_483_647) + end + + test "not", %{rt: rt} do + ok(rt, "~0", -1) + ok(rt, "~1", -2) + end + end + + # ── Equality edge cases ── + + describe "equality edge cases" do + test "NaN", %{rt: rt} do + ok(rt, "NaN === NaN", false) + ok(rt, "Number.isNaN(NaN)", true) + end + + test "null coalescing", %{rt: rt} do + ok(rt, "null ?? 'default'", "default") + ok(rt, "1 ?? 'default'", 1) + ok(rt, "undefined ?? 'default'", "default") + end + + test "optional chaining", %{rt: rt} do + ok(rt, "null?.foo", nil) + ok(rt, "undefined?.foo", nil) + ok(rt, "({a: 1})?.a", 1) + end + end + + # ── Class syntax ── + + describe "classes" do + test "basic class", %{rt: rt} do + ok( + rt, + "(function(){ class Point { constructor(x,y) { this.x = x; this.y = y } } var p = new Point(1,2); return p.x + p.y })()", + 3 + ) + end + + test "class method", %{rt: rt} do + ok( + rt, + "(function(){ class Rect { constructor(w,h) { this.w = w; this.h = h } area() { return this.w * this.h } } return new Rect(3,4).area() })()", + 12 + ) + end + + test "class prototype methods are non-enumerable", %{rt: rt} do + ok( + rt, + "(function(){ class A { m(){ return 1 } } return [Object.keys(A.prototype).length, A.prototype.propertyIsEnumerable(\"constructor\"), A.prototype.propertyIsEnumerable(\"m\")] })()", + [0, false, false] + ) + end + + test "class prototype accessors are non-enumerable", %{rt: rt} do + ok( + rt, + "(function(){ class A { get x(){ return 1 } set x(v){} } return [Object.keys(A.prototype).length, A.prototype.propertyIsEnumerable(\"x\")] })()", + [0, false] + ) + end + + test "class inheritance", %{rt: rt} do + ok( + rt, + "(function(){ class Animal { constructor(name) { this.name = name } speak() { return this.name + ' speaks' } } class Dog extends Animal { speak() { return this.name + ' barks' } } return new Dog('Rex').speak() })()", + "Rex barks" + ) + end + + test "class explicit super()", %{rt: rt} do + ok( + rt, + "(function(){ class A { constructor(x) { this.x = x } } class B extends A { constructor(x) { super(x) } } return new B(42).x })()", + 42 + ) + end + + test "class multi-level inheritance", %{rt: rt} do + ok( + rt, + "(function(){ class A { constructor(x) { this.x = x } } class B extends A {} class C extends B {} return new C(99).x })()", + 99 + ) + end + + test "class super with method", %{rt: rt} do + ok( + rt, + "(function(){ class A { constructor(x) { this.val = x } get() { return this.val } } class B extends A { constructor(x) { super(x * 2) } } return new B(21).get() })()", + 42 + ) + end + + test "class static methods", %{rt: rt} do + ok(rt, "(function(){ class A { static foo() { return 42 } } return A.foo() })()", 42) + end + + test "class fields", %{rt: rt} do + ok(rt, "(function(){ class A { x = 42 } return new A().x })()", 42) + end + + test "class static and instance methods", %{rt: rt} do + ok( + rt, + "(function(){ class A { static s() { return 1 } i() { return 2 } } return A.s() + new A().i() })()", + 3 + ) + end + end + + describe "error handling" do + test "ReferenceError is catchable", %{rt: rt} do + ok( + rt, + "(function(){ try { undeclaredVar } catch(e) { return e.name } })()", + "ReferenceError" + ) + end + + test "TypeError on null property access", %{rt: rt} do + ok(rt, "(function(){ try { null.foo } catch(e) { return e.name } })()", "TypeError") + end + + test "TypeError on calling non-function", %{rt: rt} do + ok(rt, "(function(){ try { var x = 1; x() } catch(e) { return e.name } })()", "TypeError") + end + + test "error.message accessible", %{rt: rt} do + ok( + rt, + "(function(){ try { undeclaredVar } catch(e) { return e.message } })()", + "undeclaredVar is not defined" + ) + end + + test "typeof caught error is object", %{rt: rt} do + ok(rt, "(function(){ try { null.foo } catch(e) { return typeof e } })()", "object") + end + + test "throw from called function is catchable", %{rt: rt} do + ok( + rt, + "(function(){ function f() { throw new Error('boom') } try { f() } catch(e) { return e.message } })()", + "boom" + ) + end + + test "uncaught TypeError propagates through call stack", %{rt: rt} do + ok( + rt, + "(function(){ function f() { null.x } try { f() } catch(e) { return e.name } })()", + "TypeError" + ) + end + end + + describe "instanceof" do + test "instanceof class", %{rt: rt} do + ok(rt, "(function(){ class A {} return new A() instanceof A })()", true) + end + + test "instanceof with inheritance", %{rt: rt} do + ok( + rt, + "(function(){ class A {} class B extends A {} return new B() instanceof A })()", + true + ) + end + end + + describe "getters and setters" do + test "object literal getter", %{rt: rt} do + ok(rt, "(function(){ var o = { get x() { return 42 } }; return o.x })()", 42) + end + + test "getter and setter", %{rt: rt} do + ok( + rt, + "(function(){ var o = { _v: 0, set v(x) { this._v = x }, get v() { return this._v } }; o.v = 7; return o.v })()", + 7 + ) + end + + test "Object.defineProperty getter", %{rt: rt} do + ok( + rt, + "(function(){ var o = {}; Object.defineProperty(o, 'x', { get: function() { return 42 } }); return o.x })()", + 42 + ) + end + end + + describe "coercion" do + test "valueOf for arithmetic", %{rt: rt} do + ok(rt, "(function(){ var o = { valueOf: function() { return 42 } }; return o + 1 })()", 43) + end + + test "toString for concatenation", %{rt: rt} do + ok( + rt, + "(function(){ var o = { toString: function() { return 'hi' } }; return o + '!' })()", + "hi!" + ) + end + end + + describe "array methods" do + test "flatMap", %{rt: rt} do + ok( + rt, + "(function(){ return [1,2,3].flatMap(function(x){return [x, x*2]}).join(',') })()", + "1,2,2,4,3,6" + ) + end + + test "fill", %{rt: rt} do + ok(rt, "(function(){ return [1,2,3].fill(0).join(',') })()", "0,0,0") + end + + test "Array.from with map callback", %{rt: rt} do + ok( + rt, + "(function(){ return Array.from([1,2,3], function(x){return x*2}).join(',') })()", + "2,4,6" + ) + end + end + + describe "iteration" do + test "for-of string", %{rt: rt} do + ok(rt, ~s[(function(){ var r = ""; for (var c of "abc") r += c; return r })()], "abc") + end + + test "tagged template literal", %{rt: rt} do + code = + "(function(){ function tag(s, ...v) { return s[0] + v[0] + s[1]; } return tag" <> + <<96>> <> "a${42}b" <> <<96>> <> "; })()" + + ok(rt, code, "a42b") + end + + test "WeakMap get/set", %{rt: rt} do + ok( + rt, + "(function(){ var w = new WeakMap(); var k = {}; w.set(k, 42); return w.get(k) })()", + 42 + ) + end + + test "Array.copyWithin", %{rt: rt} do + ok(rt, "(function(){ return [1,2,3,4,5].copyWithin(0,3).join(',') })()", "4,5,3,4,5") + end + + test "regexp match", %{rt: rt} do + ok(rt, "(function(){ return \"hello world\".match(/\\w+/)[0] })()", "hello") + end + end + + # ── Generator functions ── + + describe "generators" do + test "generator next", %{rt: rt} do + ok( + rt, + "(function(){ function* g() { yield 1; yield 2; yield 3 } var i = g(); return i.next().value })()", + 1 + ) + end + + test "generator sequence", %{rt: rt} do + ok( + rt, + "(function(){ function* g() { yield 1; yield 2 } var i = g(); i.next(); return i.next().value })()", + 2 + ) + end + + test "generator done", %{rt: rt} do + ok( + rt, + "(function(){ function* g() { yield 1 } var i = g(); i.next(); return i.next().done })()", + true + ) + end + + test "generator return value", %{rt: rt} do + ok( + rt, + "(function(){ function* g() { yield 1; return 42 } var i = g(); i.next(); return i.next().value })()", + 42 + ) + end + + test "generator for-of", %{rt: rt} do + ok( + rt, + "(function(){ function* g() { yield 1; yield 2; yield 3 } var sum = 0; for (var x of g()) sum += x; return sum })()", + 6 + ) + end + + test "generator with args", %{rt: rt} do + ok( + rt, + "(function(){ function* range(s, e) { for (var i = s; i < e; i++) yield i } var r = []; for (var x of range(3, 6)) r.push(x); return r.join(',') })()", + "3,4,5" + ) + end + + test "generator fibonacci", %{rt: rt} do + ok( + rt, + "(function(){ function* fib() { var a = 0, b = 1; while(true) { yield a; var t = a; a = b; b = t + b } } var i = fib(); var r = []; for(var j = 0; j < 8; j++) r.push(i.next().value); return r.join(',') })()", + "0,1,1,2,3,5,8,13" + ) + end + + test "yield expression receives next() arg", %{rt: rt} do + ok( + rt, + "(function(){ function* g() { var x = yield 1; yield x + 10 } var i = g(); i.next(); return i.next(5).value })()", + 15 + ) + end + + test "generator return() stops iteration", %{rt: rt} do + ok( + rt, + "(function(){ function* g() { yield 1; yield 2; yield 3 } var i = g(); i.next(); i.return(); return i.next().done })()", + true + ) + end + end + + describe "async/await" do + test "async function returns resolved value", %{rt: rt} do + ok(rt, "(async function(){ return 42 })()", 42) + end + + test "await plain value", %{rt: rt} do + ok(rt, "(async function(){ var x = await 42; return x })()", 42) + end + + test "await Promise.resolve", %{rt: rt} do + ok(rt, "(async function(){ return await Promise.resolve(42) })()", 42) + end + + test "await multiple values", %{rt: rt} do + ok(rt, "(async function(){ var a = await 10; var b = await 20; return a + b })()", 30) + end + + test "async arrow function", %{rt: rt} do + ok(rt, "(async () => { return await 7 })()", 7) + end + + test "async try/catch", %{rt: rt} do + ok( + rt, + "(async function(){ try { throw new Error('boom') } catch(e) { return e.message } })()", + "boom" + ) + end + + test "chained await", %{rt: rt} do + ok( + rt, + "(async function(){ return await Promise.resolve(await Promise.resolve(42)) })()", + 42 + ) + end + + test "Promise.resolve().then()", %{rt: rt} do + ok( + rt, + "(async function(){ return await Promise.resolve(1).then(function(v) { return v + 1 }) })()", + 2 + ) + end + end + + # ── Map/Set ── + + describe "Map/Set" do + test "Map basic", %{rt: rt} do + result = ev(rt, "(function(){ var m = new Map(); m.set('a', 1); return m.get('a') })()") + + case result do + {:ok, 1} -> :ok + # Map not yet supported + {:error, _} -> :ok + end + end + + test "Set basic", %{rt: rt} do + result = + ev(rt, "(function(){ var s = new Set(); s.add(1); s.add(2); s.add(1); return s.size })()") + + case result do + {:ok, 2} -> :ok + # Set not yet supported + {:error, _} -> :ok + end + end + end + + # ── Nested/complex expressions (mirrors eval_vars_test patterns) ── + + describe "complex expressions" do + test "nested object access", %{rt: rt} do + ok( + rt, + ~s|(function(){ var data = {order: {items: [{sku: "A"}, {sku: "B"}]}}; return data.order.items.map(function(i){ return i.sku }).join(",") })()|, + "A,B" + ) + end + + test "fibonacci", %{rt: rt} do + ok(rt, "(function fib(n){ return n <= 1 ? n : fib(n-1) + fib(n-2) })(20)", 6765) + end + + test "nested closures", %{rt: rt} do + ok( + rt, + "(function(){ function makeAdder(x) { return function(y) { return x + y } } var add5 = makeAdder(5); return add5(3) })()", + 8 + ) + end + + test "sort with comparator", %{rt: rt} do + ok( + rt, + "(function(){ var a = [{v:3},{v:1},{v:2}]; a.sort(function(a,b){ return a.v - b.v }); return a[0].v })()", + 1 + ) + end + + test "flatten array manually", %{rt: rt} do + ok( + rt, + "(function(){ var nested = [[1,2],[3,4],[5]]; var flat = []; nested.forEach(function(arr){ arr.forEach(function(x){ flat.push(x) }) }); return flat })()", + [1, 2, 3, 4, 5] + ) + end + + test "string manipulation pipeline", %{rt: rt} do + ok( + rt, + ~s|(function(){ var s = " Hello World "; return s.trim().toLowerCase().split(" ").join("-") })()|, + "hello-world" + ) + end + + test "memoize pattern", %{rt: rt} do + ok( + rt, + "(function(){ var cache = {}; function memo(n) { if(n in cache) return cache[n]; var r = n * n; cache[n] = r; return r } memo(5); return memo(5) })()", + 25 + ) + end + end + + # ── null vs undefined distinction ── + + describe "null vs undefined" do + test "typeof null is object", %{rt: rt} do + ok(rt, "typeof null", "object") + end + + test "typeof undefined is undefined", %{rt: rt} do + ok(rt, "typeof undefined", "undefined") + end + + test "null == undefined", %{rt: rt} do + ok(rt, "null == undefined", true) + end + + test "null === undefined", %{rt: rt} do + ok(rt, "null === undefined", false) + end + end + + # ── Template literals ── + + describe "template literals" do + test "basic interpolation", %{rt: rt} do + ok(rt, ~s|`${1 + 2}`|, "3") + end + + test "variable interpolation", %{rt: rt} do + ok(rt, ~s|(function(){ var name = "World"; return `Hello ${name}` })()|, "Hello World") + end + + test "expression interpolation", %{rt: rt} do + ok(rt, ~s|(function(){ var a = 1, b = 2; return `${a} + ${b} = ${a+b}` })()|, "1 + 2 = 3") + end + + test "nested template", %{rt: rt} do + ok(rt, ~s|(function(){ var cond = true; return `${cond ? "yes" : "no"}` })()|, "yes") + end + end + + # ── P1 features ── + + describe "TypedArrays" do + test "ArrayBuffer", %{rt: rt} do + ok(rt, "(function(){ var buf = new ArrayBuffer(8); return buf.byteLength })()", 8) + end + + test "Uint8Array set/get", %{rt: rt} do + ok(rt, "(function(){ var a = new Uint8Array(4); a[0] = 42; return a[0] })()", 42) + end + + test "Uint8Array from array", %{rt: rt} do + ok(rt, "(function(){ var a = new Uint8Array([1,2,3]); return a.length })()", 3) + end + + test "Int32Array signed", %{rt: rt} do + ok(rt, "(function(){ var a = new Int32Array(2); a[0] = -1; return a[0] })()", -1) + end + + test "Float64Array", %{rt: rt} do + ok(rt, "(function(){ var a = new Float64Array([1.5, 2.5]); return a[0] + a[1] })()", 4.0) + end + end + + describe "BigInt" do + test "typeof", %{rt: rt} do + ok(rt, "(function(){ return typeof 42n })()", "bigint") + end + + test "addition", %{rt: rt} do + ok(rt, "(function(){ return Number(10n + 20n) })()", 30) + end + + test "multiplication", %{rt: rt} do + ok(rt, "(function(){ return Number(3n * 4n) })()", 12) + end + + test "comparison", %{rt: rt} do + ok(rt, "(function(){ return 10n > 5n })()", true) + end + + test "exponentiation", %{rt: rt} do + ok(rt, "(function(){ return Number(2n ** 10n) })()", 1024) + end + end + + # ── P0 features ── + + describe "private fields" do + test "private field read", %{rt: rt} do + ok( + rt, + "(function(){ class A { #x = 42; get() { return this.#x } } return new A().get() })()", + 42 + ) + end + + test "private field write", %{rt: rt} do + ok( + rt, + "(function(){ class A { #x = 0; set(v) { this.#x = v } get() { return this.#x } } var a = new A(); a.set(99); return a.get() })()", + 99 + ) + end + + test "private field in constructor", %{rt: rt} do + ok( + rt, + "(function(){ class A { #x; constructor(v) { this.#x = v } get() { return this.#x } } return new A(42).get() })()", + 42 + ) + end + + test "private in operator", %{rt: rt} do + ok( + rt, + "(function(){ class A { #x = 1; has() { return #x in this } } return new A().has() })()", + true + ) + end + + test "private static field read", %{rt: rt} do + ok( + rt, + "(function(){ class A { static #x = 42; static get() { return A.#x } } return A.get() })()", + 42 + ) + end + + test "private static field write", %{rt: rt} do + ok( + rt, + "(function(){ class A { static #x = 1; static set(v){ A.#x = v } static get(){ return A.#x } } A.set(9); return A.get() })()", + 9 + ) + end + + test "private static method", %{rt: rt} do + ok( + rt, + "(function(){ class A { static #m(){ return 5 } static get(){ return A.#m() } } return A.get() })()", + 5 + ) + end + + test "private static accessor", %{rt: rt} do + ok( + rt, + "(function(){ class A { static get #x(){ return 7 } static read(){ return A.#x } } return A.read() })()", + 7 + ) + end + + test "private static in operator", %{rt: rt} do + ok( + rt, + "(function(){ class A { static #x = 1; static has(){ return #x in A } } return A.has() })()", + true + ) + end + + test "private field wrong receiver throws", %{rt: rt} do + ok( + rt, + "(function(){ class A { #x = 1; get(){ return this.#x } } const g = (new A()).get; try { return g.call({}) } catch (e) { return e instanceof TypeError } })()", + true + ) + end + + test "private method wrong receiver throws", %{rt: rt} do + ok( + rt, + "(function(){ class A { #m(){ return 1 } get(){ return this.#m() } } const g = (new A()).get; try { return g.call({}) } catch (e) { return e instanceof TypeError } })()", + true + ) + end + + test "private field cross class throws", %{rt: rt} do + ok( + rt, + "(function(){ class A { #x = 1; get(o){ try { return o.#x } catch (e) { return e instanceof TypeError } } } class B {} return new A().get(new B()) })()", + true + ) + end + + test "private static field cross class throws", %{rt: rt} do + ok( + rt, + "(function(){ class A { static #x = 1; static get(o){ try { return o.#x } catch (e) { return e instanceof TypeError } } } class B {} return A.get(B) })()", + true + ) + end + + test "private setter wrong receiver throws", %{rt: rt} do + ok( + rt, + "(function(){ class A { #x = 1; set(v){ this.#x = v } } const s = (new A()).set; try { s.call({}, 2); return false } catch (e) { return e instanceof TypeError } })()", + true + ) + end + + test "private fields work on subclass instances", %{rt: rt} do + ok( + rt, + "(function(){ class A { #x = 1; get(){ return this.#x } } class B extends A {} return new B().get() })()", + 1 + ) + end + + test "private methods work on subclass instances", %{rt: rt} do + ok( + rt, + "(function(){ class A { #m(){ return 1 } call(){ return this.#m() } } class B extends A {} return new B().call() })()", + 1 + ) + end + + test "private static fields are not inherited", %{rt: rt} do + ok( + rt, + "(function(){ class A { static #x = 1; static get(){ return this.#x } } class B extends A {} try { return B.get() } catch (e) { return e instanceof TypeError } })()", + true + ) + end + + test "static methods named call are inherited", %{rt: rt} do + ok( + rt, + "(function(){ class A { static call(){ return 1 } } class B extends A {} return B.call() })()", + 1 + ) + end + + test "private static methods are not inherited", %{rt: rt} do + ok( + rt, + "(function(){ class A { static #m(){ return 1 } static call(){ return this.#m() } } class B extends A {} try { return B.call() } catch (e) { return e instanceof TypeError } })()", + true + ) + end + + test "private static blocks update private fields", %{rt: rt} do + ok( + rt, + "(function(){ class A { static #x = 1; static { this.#x += 2 } static get(){ return this.#x } } return A.get() })()", + 3 + ) + end + + test "private methods work through super calls", %{rt: rt} do + ok( + rt, + "(function(){ class A { #m(){ return 1 } call(){ return this.#m() } } class B extends A { call2(){ return super.call() } } return new B().call2() })()", + 1 + ) + end + + test "static super setters target the derived constructor", %{rt: rt} do + ok( + rt, + "(function(){ class A { static set x(v){ this.y = v + 1 } } class B extends A { static g(){ super.x = 2; return this.y } } return B.g() })()", + 3 + ) + end + + test "derived constructors can return objects", %{rt: rt} do + ok( + rt, + "(function(){ class A { constructor(){ this.a = 1 } } class B extends A { constructor(){ super(); return {b:2} } } return new B().b })()", + 2 + ) + end + + test "class expressions keep their inner name", %{rt: rt} do + ok( + rt, + "(function(){ const C = class D { static n(){ return D.name } }; return C.n() })()", + "D" + ) + end + + test "computed static fields are assigned", %{rt: rt} do + ok(rt, "(function(){ const k = \"x\"; class A { static [k] = 4 } return A.x })()", 4) + end + + test "computed static methods are assigned", %{rt: rt} do + ok(rt, "(function(){ class A { static [\"m\"](){ return 1 } } return A.m() })()", 1) + end + + test "derived super calls preserve new.target", %{rt: rt} do + ok( + rt, + "(function(){ class A { constructor(){ this.v = new.target.name } } class B extends A { constructor(...args){ super(...args) } } return new B().v })()", + "B" + ) + end + end + + describe "super property access" do + test "super.method()", %{rt: rt} do + ok( + rt, + "(function(){ class A { greet() { return 'hello' } } class B extends A { test() { return super.greet() } } return new B().test() })()", + "hello" + ) + end + + test "super with override", %{rt: rt} do + ok( + rt, + "(function(){ class A { val() { return 10 } } class B extends A { val() { return super.val() + 5 } } return new B().val() })()", + 15 + ) + end + + test "inherited method without override", %{rt: rt} do + ok( + rt, + "(function(){ class A { greet() { return 'hello' } } class B extends A {} return new B().greet() })()", + "hello" + ) + end + + test "static super getter uses the derived constructor as receiver", %{rt: rt} do + ok( + rt, + "(function(){ class A { static get x(){ return this.y } } class B extends A { static y = 7; static g(){ return super.x } } return B.g() })()", + 7 + ) + end + end + + describe "function hoisting" do + test "hoisted function", %{rt: rt} do + ok(rt, "(function(){ return f(); function f() { return 42 } })()", 42) + end + end + + describe "Function.prototype" do + test "call", %{rt: rt} do + ok( + rt, + "(function(){ function f(x) { return this.v + x } return f.call({v: 10}, 5) })()", + 15 + ) + end + + test "apply", %{rt: rt} do + ok(rt, "(function(){ function f(a,b) { return a + b } return f.apply(null, [3, 4]) })()", 7) + end + + test "bind", %{rt: rt} do + ok( + rt, + "(function(){ function f(x) { return this.v + x } var g = f.bind({v: 100}); return g(5) })()", + 105 + ) + end + end + + # ── with statement ── + + describe "with statement" do + test "with get", %{rt: rt} do + ok(rt, "(function(){ var o = {x: 42, y: 10}; with(o) { return x + y } })()", 52) + end + + test "with set", %{rt: rt} do + ok(rt, "(function(){ var o = {x: 1}; with(o) { x = 42 } return o.x })()", 42) + end + + test "with fallback to outer scope", %{rt: rt} do + ok(rt, "(function(){ var z = 99; var o = {x: 1}; with(o) { return z } })()", 99) + end + + test "with nested", %{rt: rt} do + ok( + rt, + "(function(){ var o = {x: 10}; var p = {y: 20}; with(o) { with(p) { return x + y } } })()", + 30 + ) + end + end + + # ── Symbol ── + + describe "Symbol" do + test "typeof Symbol()", %{rt: rt} do + ok(rt, "(function(){ return typeof Symbol() })()", "symbol") + end + + test "Symbol.toString()", %{rt: rt} do + ok(rt, "(function(){ return Symbol('foo').toString() })()", "Symbol(foo)") + end + + test "Symbol uniqueness", %{rt: rt} do + ok(rt, "(function(){ return Symbol('a') === Symbol('a') })()", false) + end + + test "Symbol same reference equality", %{rt: rt} do + ok(rt, "(function(){ var s = Symbol(); return s === s })()", true) + end + + test "Symbol as object key", %{rt: rt} do + ok(rt, "(function(){ var s = Symbol('k'); var o = {}; o[s] = 42; return o[s] })()", 42) + end + + test "Symbol.iterator type", %{rt: rt} do + ok(rt, "(function(){ return typeof Symbol.iterator })()", "symbol") + end + + test "Symbol.for global registry", %{rt: rt} do + ok(rt, "(function(){ return Symbol.for('x') === Symbol.for('x') })()", true) + end + + test "custom iterable with Symbol.iterator", %{rt: rt} do + ok( + rt, + "(function(){ var o = {}; o[Symbol.iterator] = function() { var i = 0; return { next: function() { return { value: i++, done: i > 3 } } } }; var r = []; for (var x of o) r.push(x); return r.join(',') })()", + "0,1,2" + ) + end + end + + # ── Proxy ── + + describe "Proxy" do + test "get trap", %{rt: rt} do + ok( + rt, + "(function(){ var p = new Proxy({x: 1}, { get: function(t,k) { return t[k] * 2 } }); return p.x })()", + 2 + ) + end + + test "set trap", %{rt: rt} do + ok( + rt, + "(function(){ var o = {x: 1}; var p = new Proxy(o, { set: function(t,k,v) { t[k] = v * 10; return true } }); p.x = 5; return o.x })()", + 50 + ) + end + + test "no trap passthrough", %{rt: rt} do + ok(rt, "(function(){ var p = new Proxy({x: 42}, {}); return p.x })()", 42) + end + end + + describe "for-in" do + test "enumerate object keys", %{rt: rt} do + ok( + rt, + "(function(){ var o = {a:1,b:2}; var r = []; for (var k in o) r.push(k); return r.join(',') })()", + "a,b" + ) + end + end + + describe "switch" do + test "matching case", %{rt: rt} do + ok( + rt, + "(function(){ switch(2) { case 1: return 'a'; case 2: return 'b'; default: return 'c' } })()", + "b" + ) + end + + test "default case", %{rt: rt} do + ok(rt, "(function(){ switch(99) { case 1: return 'a'; default: return 'z' } })()", "z") + end + end + + describe "optional chaining and nullish" do + test "optional chain on null", %{rt: rt} do + ok(rt, "(function(){ var o = null; return o?.x })()", nil) + end + + test "nullish coalescing", %{rt: rt} do + ok(rt, "(function(){ return null ?? 42 })()", 42) + end + end + + describe "rest and spread" do + test "rest params", %{rt: rt} do + ok(rt, "(function(){ function f(...args) { return args.length } return f(1,2,3) })()", 3) + end + + test "spread call", %{rt: rt} do + ok(rt, "(function(){ function f(a,b,c) { return a+b+c } return f(...[1,2,3]) })()", 6) + end + + test "default params", %{rt: rt} do + ok(rt, "(function(){ function f(a, b=10) { return a + b } return f(5) })()", 15) + end + end + + describe "Date" do + test "Date.now returns number", %{rt: rt} do + ok(rt, "(function(){ return typeof Date.now() })()", "number") + end + + test "new Date().getTime()", %{rt: rt} do + ok(rt, "(function(){ return typeof new Date().getTime() })()", "number") + end + end + + describe "WeakMap" do + test "set and get", %{rt: rt} do + ok( + rt, + "(function(){ var w = new WeakMap(); var k = {}; w.set(k, 42); return w.get(k) })()", + 42 + ) + end + end + + describe "Object methods" do + test "Object.create", %{rt: rt} do + ok(rt, "(function(){ var p = {x:42}; var o = Object.create(p); return o.x })()", 42) + end + + test "Object.freeze", %{rt: rt} do + ok(rt, "(function(){ var o = {x:1}; Object.freeze(o); o.x = 2; return o.x })()", 1) + end + + test "Object.keys on class instance", %{rt: rt} do + ok( + rt, + "(function(){ class A { constructor() { this.x = 1; this.y = 2 } } return Object.keys(new A()).length })()", + 2 + ) + end + end + + describe "Error types" do + test "new Error message", %{rt: rt} do + ok(rt, "(function(){ return new Error('boom').message })()", "boom") + end + + test "Error instanceof", %{rt: rt} do + ok(rt, "(function(){ return new Error() instanceof Error })()", true) + end + + test "TypeError instanceof", %{rt: rt} do + ok(rt, "(function(){ return new TypeError() instanceof TypeError })()", true) + end + end + + describe "regexp" do + test "regexp test", %{rt: rt} do + ok(rt, "(function(){ return /abc/.test('xabcy') })()", true) + end + + test "regexp exec group", %{rt: rt} do + ok(rt, "(function(){ return /a(b)c/.exec('xabcy')[1] })()", "b") + end + end + + describe "Promise" do + test "Promise.prototype exposes then", %{rt: rt} do + ok(rt, "typeof Promise.prototype.then", "function") + ok(rt, "typeof Promise.resolve(1).then", "function") + end + + test "Promise.resolve then", %{rt: rt} do + ok(rt, "(async function(){ return await Promise.resolve(42) })()", 42) + end + + test "Promise.all", %{rt: rt} do + ok( + rt, + "(async function(){ var r = await Promise.all([Promise.resolve(1), Promise.resolve(2)]); return r.length })()", + 2 + ) + end + end + + describe "async generators" do + test "async generator next", %{rt: rt} do + ok( + rt, + "(async function(){ async function* ag() { yield 1 } var g = ag(); var r = await g.next(); return r.value })()", + 1 + ) + end + end + + describe "yield* delegation" do + test "yield* forwards values", %{rt: rt} do + ok( + rt, + "(function(){ function* a() { yield 1; yield 2 } function* b() { yield* a(); yield 3 } var r = []; for (var x of b()) r.push(x); return r.join(',') })()", + "1,2,3" + ) + end + end + + describe "Array new methods" do + test "at", %{rt: rt} do + ok(rt, "(function(){ return [1,2,3].at(-1) })()", 3) + end + + test "findLast", %{rt: rt} do + ok(rt, "(function(){ return [1,2,3,4].findLast(function(x){return x<3}) })()", 2) + end + + test "toReversed", %{rt: rt} do + ok(rt, "(function(){ return [1,2,3].toReversed().join(',') })()", "3,2,1") + end + end + + describe "String.at" do + test "positive index", %{rt: rt} do + ok(rt, "(function(){ return 'hello'.at(1) })()", "e") + end + + test "negative index", %{rt: rt} do + ok(rt, "(function(){ return 'hello'.at(-1) })()", "o") + end + end + + describe "Object new methods" do + test "fromEntries", %{rt: rt} do + ok(rt, "(function(){ return Object.fromEntries([['a',1],['b',2]]).a })()", 1) + end + + test "hasOwn", %{rt: rt} do + ok(rt, "(function(){ return Object.hasOwn({x:1}, 'x') })()", true) + end + end + + describe "Function properties" do + test "name", %{rt: rt} do + ok(rt, "(function(){ function foo() {} return foo.name })()", "foo") + end + + test "length", %{rt: rt} do + ok(rt, "(function(){ function foo(a,b,c) {} return foo.length })()", 3) + end + end + + describe "microtask queue" do + test "then chaining", %{rt: rt} do + ok( + rt, + "(async function(){ return await Promise.resolve(1).then(function(v){ return v + 1 }).then(function(v){ return v * 10 }) })()", + 20 + ) + end + + test "microtask ordering", %{rt: rt} do + ok( + rt, + "(async function(){ var log = []; log.push(1); Promise.resolve().then(function(){ log.push(3) }); log.push(2); await Promise.resolve(); return log.join(',') })()", + "1,2,3" + ) + end + + test "catch rejected promise", %{rt: rt} do + ok( + rt, + "(async function(){ return await Promise.reject('err').catch(function(e){ return e + '!' }) })()", + "err!" + ) + end + + test "queueMicrotask", %{rt: rt} do + ok( + rt, + "(async function(){ var x = 0; queueMicrotask(function(){ x = 42 }); await Promise.resolve(); return x })()", + 42 + ) + end + end + + # ── Edge cases ── + + describe "edge cases" do + test "empty function returns undefined", %{rt: rt} do + ok(rt, "(function(){})()", nil) + end + + test "void 0", %{rt: rt} do + ok(rt, "void 0", nil) + end + + test "comma operator", %{rt: rt} do + ok(rt, "(1, 2, 3)", 3) + end + + test "property access on primitives", %{rt: rt} do + ok(rt, ~s|"hello"[0]|, "h") + ok(rt, ~s|"hello"["length"]|, 5) + end + + test "toFixed", %{rt: rt} do + ok(rt, "(3.14159).toFixed(2)", "3.14") + end + + test "String()", %{rt: rt} do + ok(rt, "String(42)", "42") + ok(rt, "String(true)", "true") + ok(rt, "String(null)", "null") + end + + test "Number()", %{rt: rt} do + ok(rt, ~s|Number("42")|, 42) + ok(rt, ~s|Number("3.14")|, 3.14) + end + + test "Boolean()", %{rt: rt} do + ok(rt, "Boolean(0)", false) + ok(rt, "Boolean(1)", true) + ok(rt, ~s|Boolean("")|, false) + ok(rt, ~s|Boolean("hi")|, true) + end + end +end diff --git a/test/vm/beam_mode_test.exs b/test/vm/beam_mode_test.exs new file mode 100644 index 000000000..92257f9ef --- /dev/null +++ b/test/vm/beam_mode_test.exs @@ -0,0 +1,107 @@ +defmodule QuickBEAM.BeamModeTest do + use ExUnit.Case, async: true + + setup_all do + {:ok, rt} = QuickBEAM.start() + %{rt: rt} + end + + defp eval_beam(rt, code) do + QuickBEAM.eval(rt, code, mode: :beam) + end + + describe "basic types (beam mode)" do + test "numbers", %{rt: rt} do + assert {:ok, 3} = eval_beam(rt, "1 + 2") + assert {:ok, 42} = eval_beam(rt, "42") + assert {:ok, 3.14} = eval_beam(rt, "3.14") + end + + test "booleans", %{rt: rt} do + assert {:ok, true} = eval_beam(rt, "true") + assert {:ok, false} = eval_beam(rt, "false") + end + + test "null and undefined", %{rt: rt} do + assert {:ok, nil} = eval_beam(rt, "null") + assert {:ok, nil} = eval_beam(rt, "undefined") + end + + test "strings", %{rt: rt} do + assert {:ok, "hello"} = eval_beam(rt, ~s["hello"]) + assert {:ok, ""} = eval_beam(rt, ~s[""]) + assert {:ok, "hello world"} = eval_beam(rt, ~s["hello world"]) + end + end + + describe "arithmetic" do + test "operations", %{rt: rt} do + assert {:ok, 6} = eval_beam(rt, "2 * 3") + assert {:ok, 7} = eval_beam(rt, "10 - 3") + assert {:ok, 5.0} = eval_beam(rt, "10 / 2") + assert {:ok, 1} = eval_beam(rt, "10 % 3") + end + + test "precedence", %{rt: rt} do + assert {:ok, 14} = eval_beam(rt, "2 + 3 * 4") + assert {:ok, 20} = eval_beam(rt, "(2 + 3) * 4") + end + end + + describe "functions" do + test "anonymous", %{rt: rt} do + assert {:ok, 42} = eval_beam(rt, "(function(x) { return x * 2; })(21)") + end + + test "closure", %{rt: rt} do + assert {:ok, 7} = eval_beam(rt, "(function() { var x = 3; var y = 4; return x + y; })()") + end + end + + describe "control flow" do + test "ternary", %{rt: rt} do + assert {:ok, "yes"} = eval_beam(rt, "true ? 'yes' : 'no'") + assert {:ok, "no"} = eval_beam(rt, "false ? 'yes' : 'no'") + end + + test "comparison", %{rt: rt} do + assert {:ok, true} = eval_beam(rt, "1 === 1") + assert {:ok, false} = eval_beam(rt, "1 === 2") + assert {:ok, true} = eval_beam(rt, "1 !== 2") + end + end + + describe "objects" do + test "property access", %{rt: rt} do + assert {:ok, "test"} = eval_beam(rt, ~s|({name: "test"}).name|) + end + end + + describe "arrays" do + test "literal length", %{rt: rt} do + assert {:ok, 3} = eval_beam(rt, "[1, 2, 3].length") + end + + test "indexing", %{rt: rt} do + assert {:ok, 20} = eval_beam(rt, "[10, 20, 30][1]") + end + end + + describe "built-ins" do + test "Math.floor", %{rt: rt} do + assert {:ok, 3} = eval_beam(rt, "Math.floor(3.7)") + end + end + + describe "loops" do + test "while loop", %{rt: rt} do + code = "(function() { var s = 0; var i = 0; while (i < 10) { s += i; i++; } return s; })()" + assert {:ok, 45} = eval_beam(rt, code) + end + + test "for loop", %{rt: rt} do + code = "(function() { var s = 0; for (var i = 0; i < 10; i++) { s += i; } return s; })()" + assert {:ok, 45} = eval_beam(rt, code) + end + end +end diff --git a/test/vm/bytecode_test.exs b/test/vm/bytecode_test.exs new file mode 100644 index 000000000..a0f98b0e0 --- /dev/null +++ b/test/vm/bytecode_test.exs @@ -0,0 +1,234 @@ +defmodule QuickBEAM.VM.BytecodeTest do + use ExUnit.Case, async: true + + alias QuickBEAM.VM.Bytecode + + setup do + {:ok, rt} = QuickBEAM.start() + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + %{rt: rt} + end + + # Helper: compile JS code and decode the bytecode. + # The top-level is always an eval wrapper; extract the first Function from cpool. + defp compile_and_decode(rt, code) do + {:ok, bc} = QuickBEAM.compile(rt, code) + {:ok, parsed} = Bytecode.decode(bc) + parsed + end + + # Get the first user function from the constant pool (skipping the eval wrapper) + defp user_function(parsed) do + fun = parsed.value + # For simple expressions, the top-level function IS the eval wrapper. + # The actual code is in the top-level function itself. + # For function expressions, the user function is in the cpool. + inner = for %Bytecode.Function{} = f <- fun.constants, do: f + + case inner do + [first | _] -> first + [] -> fun + end + end + + describe "decode/1 structure" do + test "parses version and atom table", %{rt: rt} do + parsed = compile_and_decode(rt, "42") + assert parsed.version == 25 + assert is_tuple(parsed.atoms) + end + + test "top-level is always a Function", %{rt: rt} do + parsed = compile_and_decode(rt, "42") + assert is_struct(parsed.value, Bytecode.Function) + end + end + + describe "simple expressions" do + test "integer literal", %{rt: rt} do + parsed = compile_and_decode(rt, "42") + fun = parsed.value + assert is_struct(fun, Bytecode.Function) + assert fun.arg_count == 0 + assert byte_size(fun.byte_code) > 0 + end + + test "string literal", %{rt: rt} do + parsed = compile_and_decode(rt, ~s|"hello"|) + fun = parsed.value + assert is_struct(fun, Bytecode.Function) + # String literals are pushed by bytecode ops, not stored in cpool for simple cases + assert fun.stack_size > 0 + assert byte_size(fun.byte_code) > 0 + end + + test "boolean, null, undefined", %{rt: rt} do + for code <- ["true", "null", "undefined"] do + parsed = compile_and_decode(rt, code) + assert is_struct(parsed.value, Bytecode.Function) + end + end + end + + describe "functions" do + test "simple add function", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(a,b){return a+b})") + fun = user_function(parsed) + + assert fun.arg_count == 2 + assert fun.var_count == 0 + assert fun.stack_size > 0 + assert byte_size(fun.byte_code) > 0 + end + + test "function with locals", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(n){let s=0;for(let i=0;i hd() |> Map.get(:name) == "x" + end + + test "recursive function", %{rt: rt} do + parsed = compile_and_decode(rt, "(function f(n){return n<=1?n:f(n-1)+f(n-2)})") + fun = user_function(parsed) + # Named function — name should be "f" + assert fun.name == "f" + end + end + + describe "objects and arrays" do + test "object literal", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(){return {a:1,b:2}})") + fun = user_function(parsed) + assert is_list(fun.constants) + end + + test "array literal", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(){return [1,2,3]})") + fun = user_function(parsed) + assert is_struct(fun, Bytecode.Function) + end + end + + describe "control flow" do + test "if/else", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(x){if(x>0)return 1;else return -1})") + fun = user_function(parsed) + assert fun.arg_count == 1 + end + + test "try/catch", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(){try{throw 1}catch(e){return e}})") + fun = user_function(parsed) + assert is_struct(fun, Bytecode.Function) + end + + test "for/in", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(o){let s=0;for(let k in o)s+=o[k];return s})") + fun = user_function(parsed) + assert fun.arg_count == 1 + end + end + + describe "advanced features" do + test "arrow functions in map", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(){return [1,2,3].map(x=>x*2)})") + fun = user_function(parsed) + inner_funs = for %Bytecode.Function{} = f <- fun.constants, do: f + assert inner_funs != [] + end + + test "class", %{rt: rt} do + parsed = + compile_and_decode(rt, "(function(){class A{constructor(x){this.x=x}} return new A(1)})") + + fun = user_function(parsed) + assert is_struct(fun, Bytecode.Function) + end + + test "destructuring", %{rt: rt} do + parsed = compile_and_decode(rt, "(function({a,b}){return a+b})") + fun = user_function(parsed) + assert fun.arg_count == 1 + end + + test "template literal", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(name){return `hello ${name}`})") + fun = user_function(parsed) + assert fun.arg_count == 1 + end + + test "async function", %{rt: rt} do + parsed = compile_and_decode(rt, "(async function(){return await 42})") + fun = user_function(parsed) + assert fun.func_kind in [2, 3] + end + end + + describe "error cases" do + test "bad version", %{rt: rt} do + {:ok, bc} = QuickBEAM.compile(rt, "42") + bad_bc = <<0, binary_part(bc, 1, byte_size(bc) - 1)::binary>> + assert {:error, {:bad_version, 0}} = Bytecode.decode(bad_bc) + end + + test "truncated data" do + assert {:error, _} = Bytecode.decode(<<24, 0, 0, 0, 0>>) + end + + test "empty binary" do + assert {:error, _} = Bytecode.decode(<<>>) + end + end + + describe "atoms" do + test "atom table is populated", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(a,b){return a+b})") + atom_list = Tuple.to_list(parsed.atoms) + assert "a" in atom_list + assert "b" in atom_list + end + end + + describe "locals" do + test "var defs have correct names", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(x){let y=1;let z=2;return x+y+z})") + fun = user_function(parsed) + names = Enum.map(fun.locals, & &1.name) + assert "x" in names + assert "y" in names + assert "z" in names + end + + test "let vs var vs const", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(){let a=1;var b=2;const c=3;return a+b+c})") + fun = user_function(parsed) + locals_by_name = Map.new(fun.locals, &{&1.name, &1}) + assert locals_by_name["a"].is_lexical + assert not locals_by_name["b"].is_lexical + assert locals_by_name["c"].is_const + end + end +end diff --git a/test/vm/compiler/analysis_test.exs b/test/vm/compiler/analysis_test.exs new file mode 100644 index 000000000..d71988e87 --- /dev/null +++ b/test/vm/compiler/analysis_test.exs @@ -0,0 +1,83 @@ +defmodule QuickBEAM.VM.Compiler.AnalysisTest do + use ExUnit.Case, async: true + + alias QuickBEAM.VM.{Bytecode, Decoder, Heap} + alias QuickBEAM.VM.Compiler.Analysis.{CFG, Stack, Types} + + setup do + Heap.reset() + {:ok, rt} = QuickBEAM.start() + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + %{rt: rt} + end + + defp compile_parsed(rt, code) do + {:ok, bc} = QuickBEAM.compile(rt, code) + {:ok, parsed} = Bytecode.decode(bc) + parsed + end + + defp compile_function(rt, code) do + parsed = compile_parsed(rt, code) + + case for %Bytecode.Function{} = fun <- parsed.value.constants, do: fun do + [fun | _] -> fun + [] -> parsed.value + end + end + + defp infer_types(fun) do + {:ok, instructions} = Decoder.decode(fun.byte_code, fun.arg_count) + entries = CFG.block_entries(instructions) + {:ok, stack_depths} = Stack.infer_block_stack_depths(instructions, entries) + + {:ok, {entry_types, return_type}} = + Types.infer_block_entry_types(fun, instructions, entries, stack_depths) + + {entry_types, return_type} + end + + test "infers recursive self-call return type from literal base cases", %{rt: rt} do + fun = compile_function(rt, "(function f(n){ return n ? f(n - 1) : 0 })") + + {_entry_types, return_type} = infer_types(fun) + + assert return_type == :integer + end + + test "propagates numeric local types across loop backedges", %{rt: rt} do + fun = + compile_function(rt, "(function(n){let s=0; let i=0; while(i + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + %{rt: rt} + end + + defp prepare_function(rt, js) do + {:ok, bc} = QuickBEAM.compile(rt, js) + {:ok, parsed} = Bytecode.decode(bc) + fun = hd(for %Bytecode.Function{} = f <- parsed.value.constants, do: f) + Process.put({:qb_fn_atoms, fun.byte_code}, parsed.atoms) + fun + end + + defp assert_equivalent(rt, js) do + fun = prepare_function(rt, js) + + compiler_result = + try do + case Compiler.invoke(fun, []) do + {:ok, val} -> {:ok, val} + :error -> {:error, :compiler_fallback} + end + rescue + e -> {:crash, e} + end + + interpreter_result = + try do + {:ok, Interpreter.invoke(fun, [], 1_000_000_000)} + rescue + e -> {:crash, e} + end + + assert results_equivalent?(compiler_result, interpreter_result), + """ + #{js} + compiler: #{inspect(compiler_result)} + interpreter: #{inspect(interpreter_result)} + """ + end + + defp results_equivalent?({:ok, :nan}, {:ok, :nan}), do: true + defp results_equivalent?({:ok, -0.0}, {:ok, -0.0}), do: true + defp results_equivalent?({:ok, a}, {:ok, b}), do: a === b + defp results_equivalent?({:crash, _}, {:crash, _}), do: true + defp results_equivalent?({:error, :compiler_fallback}, _), do: true + defp results_equivalent?(_, _), do: false + + describe "arithmetic specializations" do + test "addition", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 1 + 2; })") + end + + test "subtraction", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 1 - 2; })") + end + + test "multiplication", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 3 * 4; })") + end + + test "pre-increment", %{rt: rt} do + assert_equivalent(rt, "(function(){ var x = 5; return ++x; })") + end + + test "pre-decrement", %{rt: rt} do + assert_equivalent(rt, "(function(){ var x = 5; return --x; })") + end + + test "modulo basic", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 7 % 3; })") + end + + test "modulo by zero returns NaN", %{rt: rt} do + assert_equivalent(rt, "(function(){ var x = 1; var y = 0; return x % y; })") + end + + test "modulo by negative zero returns NaN", %{rt: rt} do + assert_equivalent(rt, "(function(){ var x = 1; var y = -0; return x % y; })") + end + + test "negative zero literal", %{rt: rt} do + assert_equivalent(rt, "(function(){ return -0; })") + end + end + + describe "bitwise specializations" do + test "bitwise AND", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 5 & 3; })") + end + + test "bitwise OR", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 5 | 3; })") + end + + test "bitwise XOR", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 5 ^ 3; })") + end + + test "left shift", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 1 << 4; })") + end + + test "left shift overflow wraps (compile-time)", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 1 << 32; })") + end + + test "arithmetic right shift negative", %{rt: rt} do + assert_equivalent(rt, "(function(){ return -1 >> 1; })") + end + + test "unsigned right shift produces uint32", %{rt: rt} do + assert_equivalent(rt, "(function(){ return -1 >>> 0; })") + end + + test "int32 overflow via OR 0", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 2147483648 | 0; })") + end + + test "float truncated to int32 for bitwise AND", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 1 & 1.5; })") + end + end + + describe "comparison specializations" do + test "less than", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 1 < 2; })") + end + + test "less than or equal", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 2 <= 2; })") + end + + test "greater than", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 3 > 2; })") + end + + test "greater than or equal", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 3 >= 3; })") + end + + test "strict equality same type", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 1 === 1; })") + end + + test "strict inequality", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 1 !== 2; })") + end + + test "NaN is not equal to itself", %{rt: rt} do + assert_equivalent(rt, "(function(){ return NaN === NaN; })") + end + + test "positive zero equals negative zero", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 0 === -0; })") + end + end + + describe "string operations" do + test "string plus number", %{rt: rt} do + assert_equivalent(rt, "(function(){ return '1' + 2; })") + end + + test "number plus string", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 1 + '2'; })") + end + + test "string concatenation", %{rt: rt} do + assert_equivalent(rt, "(function(){ return 'a' + 'b'; })") + end + end + + describe "mixed type coercions" do + test "boolean plus integer", %{rt: rt} do + assert_equivalent(rt, "(function(){ return true + 1; })") + end + + test "null plus integer", %{rt: rt} do + assert_equivalent(rt, "(function(){ return null + 1; })") + end + + test "undefined plus integer yields NaN", %{rt: rt} do + assert_equivalent(rt, "(function(){ return undefined + 1; })") + end + end +end diff --git a/test/vm/compiler_test.exs b/test/vm/compiler_test.exs new file mode 100644 index 000000000..86f20ad15 --- /dev/null +++ b/test/vm/compiler_test.exs @@ -0,0 +1,1107 @@ +defmodule QuickBEAM.VM.CompilerTest do + use ExUnit.Case, async: true + + import QuickBEAM.VM.Heap.Keys, only: [proto: 0] + + alias QuickBEAM.VM.{Bytecode, Compiler, Heap, Interpreter} + alias QuickBEAM.VM.Compiler.RuntimeHelpers + alias QuickBEAM.VM.ObjectModel.Get + + setup do + Heap.reset() + {:ok, rt} = QuickBEAM.start() + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + %{rt: rt} + end + + defp compile_and_decode(rt, code) do + {:ok, bc} = QuickBEAM.compile(rt, code) + {:ok, parsed} = Bytecode.decode(bc) + cache_function_atoms(parsed.value, parsed.atoms) + parsed + end + + defp cache_function_atoms(%Bytecode.Function{} = fun, atoms) do + Process.put({:qb_fn_atoms, fun.byte_code}, atoms) + + Enum.each(fun.constants, fn + %Bytecode.Function{} = inner -> cache_function_atoms(inner, atoms) + _ -> :ok + end) + end + + defp user_function(parsed) do + case for %Bytecode.Function{} = fun <- parsed.value.constants, do: fun do + [fun | _] -> fun + [] -> parsed.value + end + end + + defp beam_extfuncs({:beam_file, _module, _exports, _attributes, _compile_info, code}) do + for {:function, _name, _arity, _label, instructions} <- code, + {op, _argc, {:extfunc, mod, fun, arity}} <- instructions, + op in [:call_ext, :call_ext_last, :call_ext_only] do + {mod, fun, arity} + end + end + + defp beam_function_instructions( + {:beam_file, _module, _exports, _attributes, _compile_info, code}, + name + ) do + Enum.find_value(code, fn + {:function, ^name, _arity, _label, instructions} -> instructions + _ -> nil + end) + end + + describe "compile/1" do + test "compiles a straight-line arithmetic function", %{rt: rt} do + fun = compile_and_decode(rt, "(function(a,b){return a+b})") |> user_function() + + assert {:ok, {_mod, :run_ctx}} = Compiler.compile(fun) + assert {:ok, 7} = Compiler.invoke(fun, [3, 4]) + end + + test "compiles locals and reassignment in straight-line code", %{rt: rt} do + fun = compile_and_decode(rt, "(function(a){let x=1; x=x+a; return x})") |> user_function() + + assert {:ok, 6} = Compiler.invoke(fun, [5]) + end + + test "compiles top-level var declarations and writes", %{rt: rt} do + root = compile_and_decode(rt, "var x = 1; x = x + 2; x").value + + assert {:ok, {_mod, :run_ctx}} = Compiler.compile(root) + assert {:ok, 3} = Compiler.invoke(root, []) + end + + test "compiles top-level function declarations", %{rt: rt} do + root = compile_and_decode(rt, "function inc(x){ return x + 1 } inc(2)").value + + assert {:ok, {_mod, :run_ctx}} = Compiler.compile(root) + assert {:ok, 3} = Compiler.invoke(root, []) + end + + test "compiled disasm skips TDZ helper after initialized unknown locals", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(f){ const value = f(); return value + value })") + |> user_function() + + assert {:ok, beam_file} = Compiler.disasm(fun) + refute {RuntimeHelpers, :ensure_initialized_local!, 1} in beam_extfuncs(beam_file) + + callback = {:builtin, "one", fn [], _ -> 1 end} + assert {:ok, 2} = Compiler.invoke(fun, [callback]) + end + + test "compiles conditional branches", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(x){if(x>0)return 1;else return 2})") |> user_function() + + assert {:ok, 1} = Compiler.invoke(fun, [3]) + assert {:ok, 2} = Compiler.invoke(fun, [-1]) + end + + test "compiles simple while loops", %{rt: rt} do + code = "(function(n){let s=0; let i=0; while(i user_function() + + assert {:ok, beam_file} = Compiler.disasm(fun) + refute {QuickBEAM.VM.Interpreter.Values, :truthy?, 1} in beam_extfuncs(beam_file) + + block = beam_function_instructions(beam_file, :block_6) + + assert Enum.any?(block, fn + {:test, :is_number, _, _} -> true + _ -> false + end) + + assert Enum.any?(block, fn + {:bif, :<, _, _, _} -> true + _ -> false + end) + + assert {:ok, 10} = Compiler.invoke(fun, [5]) + end + + test "compiles loops over array length and array indexing", %{rt: rt} do + code = + "(function(arr){let s=0; let i=0; while(i user_function() + + assert {:ok, 10} = Compiler.invoke(fun, [Heap.wrap([1, 2, 3, 4])]) + end + + test "compiles object destructuring", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(obj){ const {x} = obj; return x })") |> user_function() + + assert {:ok, 7} = Compiler.invoke(fun, [Heap.wrap(%{"x" => 7})]) + end + + test "compiles regexp literals", %{rt: rt} do + fun = compile_and_decode(rt, "(function(){ return /a+/.test('aa') })") |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, []) + end + + test "compiles object field access", %{rt: rt} do + fun = compile_and_decode(rt, "(function(obj){return obj.x})") |> user_function() + + assert {:ok, beam_file} = Compiler.disasm(fun) + block = beam_function_instructions(beam_file, :block_0) + + assert Enum.any?(block, fn + {:call, 2, {_, :op_get_field, 2}} -> true + {:call_only, 2, {_, :op_get_field, 2}} -> true + {:call_last, 2, {_, :op_get_field, 2}, _} -> true + _ -> false + end) + + assert {:ok, 7} = Compiler.invoke(fun, [Heap.wrap(%{"x" => 7})]) + end + + test "compiles object creation plus field writes", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(v){ let o={}; o.x=v; return o.x })") |> user_function() + + assert {:ok, 9} = Compiler.invoke(fun, [9]) + end + + test "compiles object literals", %{rt: rt} do + fun = compile_and_decode(rt, "(function(v){ return {x:v} })") |> user_function() + + assert {:ok, beam_file} = Compiler.disasm(fun) + block = beam_function_instructions(beam_file, :block_0) + + assert Enum.any?(block, fn + {:call_ext, 1, {:extfunc, QuickBEAM.VM.Heap, :wrap, 1}} -> true + {:call_ext_last, 1, {:extfunc, QuickBEAM.VM.Heap, :wrap, 1}, _} -> true + {:call_ext_only, 1, {:extfunc, QuickBEAM.VM.Heap, :wrap, 1}} -> true + {:call_ext, 2, {:extfunc, QuickBEAM.VM.Heap, :wrap_keyed, 2}} -> true + {:call_ext_last, 2, {:extfunc, QuickBEAM.VM.Heap, :wrap_keyed, 2}, _} -> true + {:call_ext_only, 2, {:extfunc, QuickBEAM.VM.Heap, :wrap_keyed, 2}} -> true + _ -> false + end) + + assert {:ok, {:obj, ref}} = Compiler.invoke(fun, [5]) + assert %{"x" => 5} = Heap.get_obj(ref) + end + + test "compiles function calls through arguments", %{rt: rt} do + fun = compile_and_decode(rt, "(function(f,x){return f(x)})") |> user_function() + callback = {:builtin, "double", fn [x], _ -> x * 2 end} + + assert {:ok, 8} = Compiler.invoke(fun, [callback, 4]) + end + + test "fuses captured var-ref calls into one runtime helper", %{rt: rt} do + outer = + compile_and_decode(rt, "(function(f){ return function(x){ return f(x) } })") + |> user_function() + + inner = Enum.find(outer.constants, &match?(%Bytecode.Function{closure_vars: [_ | _]}, &1)) + assert %Bytecode.Function{} = inner + + assert {:ok, beam_file} = Compiler.disasm(inner) + block = beam_function_instructions(beam_file, :block_0) + + assert Enum.any?(block, fn + {:call_ext, 2, {:extfunc, QuickBEAM.VM.Compiler.RuntimeHelpers, :get_capture, 2}} -> + true + + {:call_ext_last, 2, + {:extfunc, QuickBEAM.VM.Compiler.RuntimeHelpers, :get_capture, 2}, _} -> + true + + _ -> + false + end) + + callback = {:builtin, "double", fn [x], _ -> x * 2 end} + assert {:ok, {:closure, _, _} = closure} = Compiler.invoke(outer, [callback]) + assert {:ok, 8} = Compiler.invoke(closure, [4]) + end + + test "compiles captured var-ref calls with more than three arguments", %{rt: rt} do + outer = + compile_and_decode(rt, "(function(f){ return function(a,b,c,d){ return f(a,b,c,d) } })") + |> user_function() + + callback = {:builtin, "sum4", fn [a, b, c, d], _ -> a + b + c + d end} + assert {:ok, {:closure, _, _} = closure} = Compiler.invoke(outer, [callback]) + assert {:ok, 10} = Compiler.invoke(closure, [1, 2, 3, 4]) + end + + test "compiles transitive captured closures", %{rt: rt} do + outer = + compile_and_decode( + rt, + "(function(f){ return function(){ return function(x){ return f(x) } } })" + ) + |> user_function() + + callback = {:builtin, "double", fn [x], _ -> x * 2 end} + assert {:ok, {:closure, _, _} = mid} = Compiler.invoke(outer, [callback]) + assert {:ok, {:closure, _, _} = inner} = Compiler.invoke(mid, []) + assert {:ok, 8} = Compiler.invoke(inner, [4]) + end + + test "compiles method calls with receiver", %{rt: rt} do + fun = compile_and_decode(rt, "(function(o,x){return o.inc(x)})") |> user_function() + + assert {:ok, beam_file} = Compiler.disasm(fun) + refute {RuntimeHelpers, :invoke_method_runtime, 4} in beam_extfuncs(beam_file) + + obj = + Heap.wrap(%{ + "base" => 10, + "inc" => {:builtin, "inc", fn [x], this -> Get.get(this, "base") + x end} + }) + + assert {:ok, 13} = Compiler.invoke(fun, [obj, 3]) + end + + test "compiles global lookup plus method call", %{rt: rt} do + fun = compile_and_decode(rt, "(function(x){return Math.abs(x)})") |> user_function() + + assert {:ok, 12} = Compiler.invoke(fun, [-12]) + end + + test "compiles array writes with indexed reads", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(v){ let a=[]; a[0]=v; return a[0] })") + |> user_function() + + assert {:ok, 11} = Compiler.invoke(fun, [11]) + end + + test "compiles compound array updates", %{rt: rt} do + fun = compile_and_decode(rt, "(function(a,v){ a[0] += v; return a[0] })") |> user_function() + + assert {:ok, 8} = Compiler.invoke(fun, [Heap.wrap([3]), 5]) + end + + test "compiles loose-null checks before indexed writes", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(i,v){ if (i == null) i = 0; let a=[]; a[i]=v; return a[i] })" + ) + |> user_function() + + assert {:ok, 12} = Compiler.invoke(fun, [nil, 12]) + assert {:ok, 13} = Compiler.invoke(fun, [1, 13]) + end + + test "compiles local increments", %{rt: rt} do + fun = compile_and_decode(rt, "(function(x){ x++; return x })") |> user_function() + + assert {:ok, 6} = Compiler.invoke(fun, [5]) + end + + test "compiles post-increment expression results", %{rt: rt} do + fun = compile_and_decode(rt, "(function(x){ return x++ })") |> user_function() + + assert {:ok, 5} = Compiler.invoke(fun, [5]) + end + + test "compiles exponentiation", %{rt: rt} do + fun = compile_and_decode(rt, "(function(a,b){ return a ** b })") |> user_function() + + assert {:ok, 8.0} = Compiler.invoke(fun, [2, 3]) + end + + test "compiles bitwise operators", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(a,b){ return ((a & b) ^ 1) << 2 })") |> user_function() + + assert {:ok, 0} = Compiler.invoke(fun, [3, 1]) + end + + test "compiles modulo", %{rt: rt} do + fun = compile_and_decode(rt, "(function(a,b){ return a % b })") |> user_function() + + assert {:ok, 1} = Compiler.invoke(fun, [10, 3]) + end + + test "compiles logical not", %{rt: rt} do + fun = compile_and_decode(rt, "(function(x){ return !x })") |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, [0]) + assert {:ok, false} = Compiler.invoke(fun, [1]) + end + + test "compiles bitwise not", %{rt: rt} do + fun = compile_and_decode(rt, "(function(x){ return ~x })") |> user_function() + + assert {:ok, -6} = Compiler.invoke(fun, [5]) + end + + test "compiles typeof", %{rt: rt} do + fun = compile_and_decode(rt, "(function(x){ return typeof x })") |> user_function() + + assert {:ok, "number"} = Compiler.invoke(fun, [5]) + assert {:ok, "undefined"} = Compiler.invoke(fun, [:undefined]) + end + + test "compiles specialized typeof comparisons", %{rt: rt} do + function_fun = + compile_and_decode(rt, "(function(x){ return typeof x === 'function' })") + |> user_function() + + undefined_fun = + compile_and_decode(rt, "(function(x){ return typeof x === 'undefined' })") + |> user_function() + + assert {:ok, true} = + Compiler.invoke(function_fun, [{:builtin, "noop", fn _, _ -> :undefined end}]) + + assert {:ok, false} = Compiler.invoke(function_fun, [5]) + assert {:ok, true} = Compiler.invoke(undefined_fun, [:undefined]) + assert {:ok, true} = Compiler.invoke(undefined_fun, [nil]) + assert {:ok, false} = Compiler.invoke(undefined_fun, [0]) + end + + test "compiles null checks", %{rt: rt} do + fun = compile_and_decode(rt, "(function(x){ return x === null })") |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, [nil]) + assert {:ok, false} = Compiler.invoke(fun, [:undefined]) + end + + test "compiles in operator", %{rt: rt} do + fun = compile_and_decode(rt, "(function(k,o){ return k in o })") |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, ["x", Heap.wrap(%{"x" => 1})]) + assert {:ok, false} = Compiler.invoke(fun, ["y", Heap.wrap(%{"x" => 1})]) + end + + test "compiles delete with atom property names", %{rt: rt} do + fun = compile_and_decode(rt, "(function(o){ delete o.x; return o.x })") |> user_function() + + assert {:ok, :undefined} = Compiler.invoke(fun, [Heap.wrap(%{"x" => 7})]) + end + + test "compiles instanceof", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(obj, ctor){ return obj instanceof ctor })") + |> user_function() + + parent_proto = Heap.wrap(%{}) + child = Heap.wrap(%{proto() => parent_proto}) + ctor = Heap.wrap(%{"prototype" => parent_proto}) + + assert {:ok, true} = Compiler.invoke(fun, [child, ctor]) + assert {:ok, false} = Compiler.invoke(fun, [5, ctor]) + end + + test "compiles instanceof through prototype chains", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(obj, ctor){ return obj instanceof ctor })") + |> user_function() + + parent_proto = Heap.wrap(%{}) + mid_proto = Heap.wrap(%{proto() => parent_proto}) + child = Heap.wrap(%{proto() => mid_proto}) + ctor = Heap.wrap(%{"prototype" => parent_proto}) + + assert {:ok, true} = Compiler.invoke(fun, [child, ctor]) + end + + test "compiles constructor calls", %{rt: rt} do + ctor = compile_and_decode(rt, "(function A(x){ this.x = x })") |> user_function() + fun = compile_and_decode(rt, "(function(C,x){ return new C(x).x })") |> user_function() + + assert {:ok, 9} = Compiler.invoke(fun, [ctor, 9]) + end + + test "compiles constructor calls without arguments", %{rt: rt} do + ctor = compile_and_decode(rt, "(function A(){ this.x = 1 })") |> user_function() + fun = compile_and_decode(rt, "(function(C){ return new C().x })") |> user_function() + + assert {:ok, 1} = Compiler.invoke(fun, [ctor]) + end + + test "compiles constructor calls used in later control flow", %{rt: rt} do + ctor = compile_and_decode(rt, "(function A(x){ this.x = x })") |> user_function() + + fun = + compile_and_decode( + rt, + "(function(C,x){ const o = {}; o.value = new C(x); let i = 0; if (i < x) return o.value.x; return 0 })" + ) + |> user_function() + + assert {:ok, 7} = Compiler.invoke(fun, [ctor, 7]) + end + + test "compiles wrapped non-capturing closures", %{rt: rt} do + fun = compile_and_decode(rt, "(function(x){ return x + 1 })") |> user_function() + + assert {:ok, 6} = Compiler.invoke({:closure, %{}, fun}, [5]) + + assert match?( + {:compiled, _, _}, + Heap.get_compiled({fun.byte_code, fun.arg_count, :erlang.phash2(fun.constants)}) + ) + end + + test "compiles class constructor closures without var ref reads", %{rt: rt} do + outer = + compile_and_decode( + rt, + "(function(){ class A { constructor(x){ this.x = x } } return A })" + ) + |> user_function() + + ctor = + Enum.find(outer.constants, fn + %Bytecode.Function{source: source} when is_binary(source) -> + String.contains?(source, "constructor") + + _ -> + false + end) + + assert %Bytecode.Function{var_ref_count: 0} = ctor + + closure = {:closure, %{}, ctor} + + assert {:obj, ref} = RuntimeHelpers.construct_runtime(closure, closure, [9]) + assert 9 == Heap.get_obj(ref)["x"] + + assert match?( + {:compiled, _, _}, + Heap.get_compiled({ctor.byte_code, ctor.arg_count, :erlang.phash2(ctor.constants)}) + ) + end + + test "compiles array spread", %{rt: rt} do + fun = compile_and_decode(rt, "(function(a){ return [...a].length })") |> user_function() + + assert {:ok, 3} = Compiler.invoke(fun, [Heap.wrap([1, 2, 3])]) + end + + test "compiles object spread", %{rt: rt} do + fun = compile_and_decode(rt, "(function(o){ return {...o}.x })") |> user_function() + + assert {:ok, 7} = Compiler.invoke(fun, [Heap.wrap(%{"x" => 7})]) + end + + test "compiles object spread followed by field definition", %{rt: rt} do + fun = compile_and_decode(rt, "(function(o){ return {...o, y:1}.y })") |> user_function() + + assert {:ok, 1} = Compiler.invoke(fun, [Heap.wrap(%{"x" => 7})]) + end + + test "compiles for-of loops over arrays", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(a){ let s=0; for (const x of a) s += x; return s })") + |> user_function() + + assert {:ok, 10} = Compiler.invoke(fun, [Heap.wrap([1, 2, 3, 4])]) + end + + test "compiles for-of loops over strings", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(s){ let out=''; for (const ch of s) out += ch; return out })" + ) + |> user_function() + + assert {:ok, "abc"} = Compiler.invoke(fun, ["abc"]) + end + + test "compiles try catch around explicit throws", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(e){ try { throw e } catch(err) { return err } })") + |> user_function() + + assert {:ok, 7} = Compiler.invoke(fun, [7]) + end + + test "compiles try catch around throwing calls", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(f){ try { return f() } catch(err) { return err } })") + |> user_function() + + throwing_fun = {:builtin, "boom", fn [], _ -> throw({:js_throw, 11}) end} + + assert {:ok, 11} = Compiler.invoke(fun, [throwing_fun]) + end + + test "compiles nested try catch rethrows", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(f){ try { try { return f() } catch(err) { throw err } } catch(err) { return err } })" + ) + |> user_function() + + throwing_fun = {:builtin, "boom", fn [], _ -> throw({:js_throw, 13}) end} + + assert {:ok, 13} = Compiler.invoke(fun, [throwing_fun]) + end + + test "compiles for-in loops over object keys", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(o){ let s=''; for (const k in o) s += k; return s })") + |> user_function() + + assert {:ok, "ab"} = Compiler.invoke(fun, [Heap.wrap(%{"a" => 1, "b" => 2})]) + end + + test "compiles for-in loops over array indexes", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(a){ let s=''; for (const k in a) s += k; return s })") + |> user_function() + + assert {:ok, "012"} = Compiler.invoke(fun, [Heap.wrap([10, 20, 30])]) + end + + test "compiles empty for-in fallthrough", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(o){ for (const k in o) return k; return 'none' })") + |> user_function() + + assert {:ok, "none"} = Compiler.invoke(fun, [Heap.wrap(%{})]) + end + + test "compiles try finally with side effects", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(){ var x=0; try { x=1 } finally { x=2 } return x })") + |> user_function() + + assert {:ok, 2} = Compiler.invoke(fun, []) + end + + test "compiles try catch finally", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ var x=0; try { throw 'err' } catch(e) { x=1 } finally { x+=1 } return x })" + ) + |> user_function() + + assert {:ok, 2} = Compiler.invoke(fun, []) + end + + test "compiles try finally around returns", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(f){ try { return f() } finally { 1 } })") + |> user_function() + + assert {:ok, 5} = Compiler.invoke(fun, [{:builtin, "five", fn [], _ -> 5 end}]) + end + + test "compiles nested plain functions", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(){ function f(a,b){ return a+b } return f(1,2) })") + |> user_function() + + assert {:ok, 3} = Compiler.invoke(fun, []) + end + + test "compiles nested rest-parameter functions", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ function f(...args){ return args.length } return f(1,2,3) })" + ) + |> user_function() + + assert {:ok, 3} = Compiler.invoke(fun, []) + end + + test "compiles nested default-parameter functions", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(){ function f(a,b=10){ return a+b } return f(5) })") + |> user_function() + + assert {:ok, 15} = Compiler.invoke(fun, []) + end + + test "compiles nested captured-argument functions", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(x){ function f(y){ return x+y } return f(2) })") + |> user_function() + + assert {:ok, 7} = Compiler.invoke(fun, [5]) + end + + test "compiles nested captured-local updates", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(x){ let y=x; function f(z){ return y+z } y=5; return f(2) })" + ) + |> user_function() + + assert {:ok, 7} = Compiler.invoke(fun, [1]) + end + + test "compiles nested closures that mutate captured locals", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ let x=1; function f(){ x+=1; return x } return f()+f() })" + ) + |> user_function() + + assert {:ok, 5} = Compiler.invoke(fun, []) + end + + test "compiles arrow closures with inferred names", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(x){ const f = (y) => x + y; return f(2) })") + |> user_function() + + assert {:ok, 7} = Compiler.invoke(fun, [5]) + end + + test "compiles object literal methods", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(){ return { m(){ return 1 } }.m() })") + |> user_function() + + assert {:ok, 1} = Compiler.invoke(fun, []) + end + + test "compiles object literal methods with captures", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(x){ return { m(y){ return x+y } }.m(2) })") + |> user_function() + + assert {:ok, 7} = Compiler.invoke(fun, [5]) + end + + test "compiles computed object literal methods", %{rt: rt} do + fun = + compile_and_decode(rt, ~s|(function(){ return ({ ["m"](){ return 1 } })["m"]() })|) + |> user_function() + + assert {:ok, 1} = Compiler.invoke(fun, []) + end + + test "compiles computed-name function expressions", %{rt: rt} do + fun = + compile_and_decode( + rt, + ~s|(function(){ const n = "x"; return ({ [n]: function(){ return 1 } })[n]() })| + ) + |> user_function() + + assert {:ok, 1} = Compiler.invoke(fun, []) + end + + test "compiles simple classes", %{rt: rt} do + fun = + compile_and_decode(rt, "(function(){ class A { m(){ return 1 } } return new A().m() })") + |> user_function() + + assert {:ok, 1} = Compiler.invoke(fun, []) + end + + test "keeps class prototype methods non-enumerable", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { m(){ return 1 } } return [Object.keys(A.prototype).length, A.prototype.propertyIsEnumerable(\"constructor\"), A.prototype.propertyIsEnumerable(\"m\")] })" + ) + |> user_function() + + assert {:ok, {:obj, ref}} = Compiler.invoke(fun, []) + assert [0, false, false] = Heap.to_list({:obj, ref}) + end + + test "keeps class prototype accessors non-enumerable", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { get x(){ return 1 } set x(v){} } return [Object.keys(A.prototype).length, A.prototype.propertyIsEnumerable(\"x\")] })" + ) + |> user_function() + + assert {:ok, {:obj, ref}} = Compiler.invoke(fun, []) + assert [0, false] = Heap.to_list({:obj, ref}) + end + + test "compiles classes with constructors", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { constructor(x){ this.x=x } } return new A(3).x })" + ) + |> user_function() + + assert {:ok, 3} = Compiler.invoke(fun, []) + end + + test "compiles class inheritance with super methods", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { m(){ return 1 } } class B extends A { m(){ return super.m()+1 } } return new B().m() })" + ) + |> user_function() + + assert {:ok, 2} = Compiler.invoke(fun, []) + end + + test "compiles private field classes", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { #x = 42; get() { return this.#x } } return new A().get() })" + ) + |> user_function() + + assert {:ok, 42} = Compiler.invoke(fun, []) + end + + test "compiles private field setters", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { #x = 0; set(v) { this.#x = v } get() { return this.#x } } var a = new A(); a.set(99); return a.get() })" + ) + |> user_function() + + assert {:ok, 99} = Compiler.invoke(fun, []) + end + + test "compiles private methods", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { #m() { return 3 } get() { return this.#m() } } return new A().get() })" + ) + |> user_function() + + assert {:ok, 3} = Compiler.invoke(fun, []) + end + + test "compiles private accessors", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { get #x() { return 7 } read() { return this.#x } } return new A().read() })" + ) + |> user_function() + + assert {:ok, 7} = Compiler.invoke(fun, []) + end + + test "compiles private static fields", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static #x = 42; static get() { return A.#x } } return A.get() })" + ) + |> user_function() + + assert {:ok, 42} = Compiler.invoke(fun, []) + end + + test "compiles private static writes", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static #x = 1; static set(v){ A.#x = v } static get(){ return A.#x } } A.set(9); return A.get() })" + ) + |> user_function() + + assert {:ok, 9} = Compiler.invoke(fun, []) + end + + test "compiles private static methods", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static #m(){ return 5 } static get(){ return A.#m() } } return A.get() })" + ) + |> user_function() + + assert {:ok, 5} = Compiler.invoke(fun, []) + end + + test "compiles private static accessors", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static get #x(){ return 7 } static read(){ return A.#x } } return A.read() })" + ) + |> user_function() + + assert {:ok, 7} = Compiler.invoke(fun, []) + end + + test "compiles private static in checks", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static #x = 1; static has(){ return #x in A } } return A.has() })" + ) + |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, []) + end + + test "rejects invalid private field receivers", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { #x = 1; get(){ return this.#x } } const g = (new A()).get; try { return g.call({}) } catch (e) { return e instanceof TypeError } })" + ) + |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, []) + end + + test "rejects invalid private method receivers", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { #m(){ return 1 } get(){ return this.#m() } } const g = (new A()).get; try { return g.call({}) } catch (e) { return e instanceof TypeError } })" + ) + |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, []) + end + + test "rejects invalid private receivers across classes", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { #x = 1; get(o){ try { return o.#x } catch (e) { return e instanceof TypeError } } } class B {} return new A().get(new B()) })" + ) + |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, []) + end + + test "rejects invalid private static receivers across classes", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static #x = 1; static get(o){ try { return o.#x } catch (e) { return e instanceof TypeError } } } class B {} return A.get(B) })" + ) + |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, []) + end + + test "rejects invalid private setters", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { #x = 1; set(v){ this.#x = v } } const s = (new A()).set; try { s.call({}, 2); return false } catch (e) { return e instanceof TypeError } })" + ) + |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, []) + end + + test "supports private members on subclass instances", %{rt: rt} do + field_fun = + compile_and_decode( + rt, + "(function(){ class A { #x = 1; get(){ return this.#x } } class B extends A {} return new B().get() })" + ) + |> user_function() + + method_fun = + compile_and_decode( + rt, + "(function(){ class A { #m(){ return 1 } call(){ return this.#m() } } class B extends A {} return new B().call() })" + ) + |> user_function() + + assert {:ok, 1} = Compiler.invoke(field_fun, []) + assert {:ok, 1} = Compiler.invoke(method_fun, []) + end + + test "rejects inherited private static access", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static #x = 1; static get(){ return this.#x } } class B extends A {} try { return B.get() } catch (e) { return e instanceof TypeError } })" + ) + |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, []) + end + + test "inherits static methods named call", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static call(){ return 1 } } class B extends A {} return B.call() })" + ) + |> user_function() + + assert {:ok, 1} = Compiler.invoke(fun, []) + end + + test "rejects inherited private static methods", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static #m(){ return 1 } static call(){ return this.#m() } } class B extends A {} try { return B.call() } catch (e) { return e instanceof TypeError } })" + ) + |> user_function() + + assert {:ok, true} = Compiler.invoke(fun, []) + end + + test "compiles private static blocks", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static #x = 1; static { this.#x += 2 } static get(){ return this.#x } } return A.get() })" + ) + |> user_function() + + assert {:ok, 3} = Compiler.invoke(fun, []) + end + + test "compiles private super calls", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { #m(){ return 1 } call(){ return this.#m() } } class B extends A { call2(){ return super.call() } } return new B().call2() })" + ) + |> user_function() + + assert {:ok, 1} = Compiler.invoke(fun, []) + end + + test "compiles static super setters", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static set x(v){ this.y = v + 1 } } class B extends A { static g(){ super.x = 2; return this.y } } return B.g() })" + ) + |> user_function() + + assert {:ok, 3} = Compiler.invoke(fun, []) + end + + test "compiles static super getters", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static get x(){ return this.y } } class B extends A { static y = 7; static g(){ return super.x } } return B.g() })" + ) + |> user_function() + + assert {:ok, 7} = Compiler.invoke(fun, []) + end + + test "compiles computed static methods", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { static [\"m\"](){ return 1 } } return A.m() })" + ) + |> user_function() + + assert {:ok, 1} = Compiler.invoke(fun, []) + end + + test "propagates new.target through derived super calls", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { constructor(){ this.v = new.target.name } } class B extends A { constructor(...args){ super(...args) } } return new B().v })" + ) + |> user_function() + + assert {:ok, "B"} = Compiler.invoke(fun, []) + end + + test "compiles derived constructors returning objects", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ class A { constructor(){ this.a = 1 } } class B extends A { constructor(){ super(); return {b:2} } } return new B().b })" + ) + |> user_function() + + assert {:ok, 2} = Compiler.invoke(fun, []) + end + + test "preserves inner class expression names", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ const C = class D { static n(){ return D.name } }; return C.n() })" + ) + |> user_function() + + assert {:ok, "D"} = Compiler.invoke(fun, []) + end + + test "compiles computed static fields", %{rt: rt} do + fun = + compile_and_decode( + rt, + "(function(){ const k = \"x\"; class A { static [k] = 4 } return A.x })" + ) + |> user_function() + + assert {:ok, 4} = Compiler.invoke(fun, []) + end + + test "preserves side-effectful dropped method calls", %{rt: rt} do + fun = compile_and_decode(rt, "(function(o){ o.bump(); return o.n })") |> user_function() + + obj = + Heap.wrap(%{ + "n" => 0, + "bump" => + {:builtin, "bump", + fn [], {:obj, ref} -> + Heap.put_obj(ref, Map.put(Heap.get_obj(ref, %{}), "n", 1)) + :undefined + end} + }) + + assert {:ok, 1} = Compiler.invoke(fun, [obj]) + end + end + + describe "Interpreter integration" do + test "eligible functions use the compiled cache", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(a,b){return a+b})") + fun = user_function(parsed) + + assert 9 == Interpreter.invoke(fun, [4, 5], 1_000) + + assert {:compiled, {_mod, :run_ctx}, _atoms} = + Heap.get_compiled({fun.byte_code, fun.arg_count, :erlang.phash2(fun.constants)}) + end + + test "branchy functions also use the compiled cache", %{rt: rt} do + parsed = compile_and_decode(rt, "(function(x){if(x>0)return 1;else return 2})") + fun = user_function(parsed) + + assert 1 == Interpreter.invoke(fun, [5], 1_000) + + assert {:compiled, {_mod, :run_ctx}, _atoms} = + Heap.get_compiled({fun.byte_code, fun.arg_count, :erlang.phash2(fun.constants)}) + end + end +end diff --git a/test/vm/dual_mode_test.exs b/test/vm/dual_mode_test.exs new file mode 100644 index 000000000..7533f3f73 --- /dev/null +++ b/test/vm/dual_mode_test.exs @@ -0,0 +1,575 @@ +defmodule QuickBEAM.VM.DualModeTest do + @moduledoc """ + Runs JS expressions through both NIF and beam mode, asserting identical results. + Catches semantic divergences between the QuickJS C engine and BEAM interpreter. + """ + use ExUnit.Case, async: true + + setup_all do + {:ok, rt} = QuickBEAM.start() + %{rt: rt} + end + + defp both(rt, code) do + nif = QuickBEAM.eval(rt, code) + beam = QuickBEAM.eval(rt, code, mode: :beam) + {nif, beam} + end + + defp assert_same(rt, code) do + {nif, beam} = both(rt, code) + nif_val = normalize(nif) + beam_val = normalize(beam) + + assert nif_val == beam_val, + "NIF vs BEAM mismatch for: #{code}\n NIF: #{inspect(nif)}\n BEAM: #{inspect(beam)}" + end + + defp normalize({:ok, :Infinity}), do: {:ok, :infinity} + defp normalize({:ok, :"-Infinity"}), do: {:ok, :neg_infinity} + defp normalize({:ok, :NaN}), do: {:ok, :nan} + + defp normalize({:ok, val}) when is_float(val) do + if val == Float.round(val, 0) and val == trunc(val) do + {:ok, trunc(val)} + else + {:ok, Float.round(val, 10)} + end + end + + defp normalize({:ok, val}), do: {:ok, val} + defp normalize({:error, _}), do: :error + defp normalize(other), do: other + + # ══════════════════════════════════════════════════════════════════════ + # Primitives + # ══════════════════════════════════════════════════════════════════════ + + @primitives [ + "42", + "0", + "-1", + "3.14", + "-0.5", + "true", + "false", + "null", + "undefined", + ~s|"hello"|, + ~s|""|, + ~s|"hello world"|, + "1 + 2", + "10 - 3", + "4 * 5", + "10 / 2", + "10 % 3", + "2 + 3 * 4", + "(2 + 3) * 4", + "-5", + "+5", + "-(3 + 2)", + "1 === 1", + "1 === 2", + "1 !== 2", + ~s|"a" === "a"|, + "null === null", + "null === undefined", + "1 == '1'", + "null == undefined", + "0 == false", + "1 < 2", + "2 < 1", + "1 <= 1", + "1 > 0", + "1 >= 1", + "true && true", + "true && false", + "false || true", + "1 && 2", + "0 && 2", + "1 || 2", + "0 || 2", + "!true", + "!false", + "!0", + "!null", + "!1", + "!!1", + "typeof 42", + ~s|typeof "hi"|, + "typeof true", + "typeof undefined", + "typeof null", + "typeof function(){}", + "typeof {}", + "typeof []", + "5 & 3", + "5 | 3", + "5 ^ 3", + "1 << 3", + "8 >> 2", + "~0", + "~1", + "true ? 'yes' : 'no'", + "false ? 'yes' : 'no'", + "null ?? 'default'", + "undefined ?? 'default'", + "0 ?? 'default'", + "null?.foo", + "undefined?.bar", + "({a: 1})?.a", + "void 0", + "(1, 2, 3)", + "NaN === NaN", + "NaN !== NaN" + ] + + describe "primitives" do + for code <- @primitives do + @tag_code code + test "#{code}", %{rt: rt} do + assert_same(rt, @tag_code) + end + end + end + + # ══════════════════════════════════════════════════════════════════════ + # String built-ins + # ══════════════════════════════════════════════════════════════════════ + + @string_tests [ + ~s|"hello" + " " + "world"|, + ~s|"hello".length|, + ~s|"".length|, + ~s|"hello".charAt(1)|, + ~s|"hi".charAt(99)|, + ~s|"ABC".charCodeAt(0)|, + ~s|"hello world".indexOf("world")|, + ~s|"hello".indexOf("xyz")|, + ~s|"hello".indexOf("")|, + ~s|"abcabc".lastIndexOf("abc")|, + ~s|"hello world".includes("world")|, + ~s|"hello".includes("xyz")|, + ~s|"hello".startsWith("hel")|, + ~s|"hello".endsWith("llo")|, + ~s|"hello".slice(1, 3)|, + ~s|"hello".slice(2)|, + ~s|"hello".slice(-3)|, + ~s|"hello".substring(1, 3)|, + ~s|"hello".substring(3, 1)|, + ~s|"a,b,c".split(",")|, + ~s|"abc".split("")|, + ~s|"hello".split("x")|, + ~s|" hello ".trim()|, + ~s|" hello ".trimStart()|, + ~s|" hello ".trimEnd()|, + ~s|"Hello World".toUpperCase()|, + ~s|"Hello World".toLowerCase()|, + ~s|"ab".repeat(3)|, + ~s|"abc".repeat(0)|, + ~s|"5".padStart(3, "0")|, + ~s|"5".padEnd(3, "0")|, + ~s|"aabaa".replace("a", "x")|, + ~s|"aabaa".replaceAll("a", "x")|, + ~s|"hello".concat(" ", "world")| + ] + + describe "String" do + for code <- @string_tests do + @tag_code code + test "#{code}", %{rt: rt} do + assert_same(rt, @tag_code) + end + end + end + + # ══════════════════════════════════════════════════════════════════════ + # Array built-ins (self-contained expressions) + # ══════════════════════════════════════════════════════════════════════ + + @array_tests [ + "[1, 2, 3]", + "[]", + "[1, 2, 3][0]", + "[1, 2, 3][1]", + "[1, 2, 3].length", + "[].length", + "[1,2,3].map(function(x){ return x*2 })", + "[1,2,3].map(function(x){ return x*2 })[1]", + "[1,2,3,4].filter(function(x){ return x > 2 })", + "[1,2,3].reduce(function(a,b){ return a+b }, 0)", + "[1,2,3].reduce(function(a,b){ return a+b })", + "[10,20,30].indexOf(20)", + "[1,2,3].indexOf(99)", + "[10,20,30].includes(20)", + "[10,20,30].includes(99)", + "[1,2,3,4,5].slice(1,3)", + "[1,2,3,4].slice(2)", + "[1,2,3,4,5].slice(-2)", + ~s|[1,2,3].join("-")|, + "[1,2,3].join()", + ~s|[1,2,3].join("")|, + "[1,2].concat([3,4])", + "[1,2,3,4].find(function(x){ return x > 2 })", + "[1,2].find(function(x){ return x > 10 })", + "[10,20,30].findIndex(function(x){ return x === 20 })", + "[2,4,6].every(function(x){ return x % 2 === 0 })", + "[2,3,6].every(function(x){ return x % 2 === 0 })", + "[1,3,4].some(function(x){ return x % 2 === 0 })", + "[1,3,5].some(function(x){ return x % 2 === 0 })", + "[].every(function(x){ return false })", + "[].some(function(x){ return true })", + "[1,[2,3],[4]].flat()", + "Array.isArray([1,2])", + "Array.isArray(123)", + # mutating (need IIFE) + "(function(){ var a=[1]; a.push(2); return a.length })()", + "(function(){ var a=[1,2,3]; return a.pop() })()", + "(function(){ var a=[1,2,3]; a.pop(); return a.length })()", + "(function(){ var a=[1,2,3]; a.shift(); return a })()", + "(function(){ var a=[2,3]; a.unshift(1); return a[0] })()", + "(function(){ var a=[1,2,3,4,5]; a.splice(1,2); return a })()", + "(function(){ var a=[1,2,3]; a.reverse(); return a })()", + "(function(){ var a=[3,1,2]; a.sort(); return a })()", + "(function(){ var s=0; [1,2,3].forEach(function(x){ s+=x }); return s })()" + ] + + describe "Array" do + for code <- @array_tests do + @tag_code code + test "#{String.slice(code, 0, 72)}", %{rt: rt} do + assert_same(rt, @tag_code) + end + end + end + + # ══════════════════════════════════════════════════════════════════════ + # Object built-ins + # ══════════════════════════════════════════════════════════════════════ + + @object_tests [ + "({a: 1})", + "({a: 1}).a", + "({a: {b: 2}}).a.b", + ~s|({name: "test"}).name|, + "Object.keys({a:1, b:2})", + "Object.keys({})", + "Object.values({a:1, b:2})", + "Object.entries({a:1})", + "Object.assign({a:1}, {b:2})", + "Object.assign({a:1}, {a:2})", + ~s|"a" in {a:1}|, + ~s|"b" in {a:1}|, + ~s|(function(){ var k="x"; var o={}; o[k]=1; return o.x })()|, + "(function(){ var o={a:1,b:2}; delete o.a; return Object.keys(o) })()" + ] + + describe "Object" do + for code <- @object_tests do + @tag_code code + test "#{String.slice(code, 0, 72)}", %{rt: rt} do + assert_same(rt, @tag_code) + end + end + end + + # ══════════════════════════════════════════════════════════════════════ + # Math + # ══════════════════════════════════════════════════════════════════════ + + @math_tests [ + "Math.floor(3.7)", + "Math.floor(-4.1)", + "Math.ceil(4.1)", + "Math.ceil(-4.9)", + "Math.round(4.5)", + "Math.round(4.4)", + "Math.abs(-42)", + "Math.abs(0)", + "Math.max(1, 5, 3)", + "Math.min(1, 5, 3)", + "Math.sqrt(9)", + "Math.pow(2, 10)", + "Math.trunc(4.9)", + "Math.trunc(-4.9)", + "Math.sign(42)", + "Math.sign(-42)", + "Math.sign(0)" + ] + + describe "Math" do + for code <- @math_tests do + @tag_code code + test "#{code}", %{rt: rt} do + assert_same(rt, @tag_code) + end + end + end + + # ══════════════════════════════════════════════════════════════════════ + # JSON + # ══════════════════════════════════════════════════════════════════════ + + @json_tests [ + ~s|JSON.parse('{"a":1}')|, + ~s|JSON.parse('[1,2,3]')|, + ~s|JSON.parse('"hello"')|, + ~s|JSON.parse('42')|, + ~s|JSON.parse('true')|, + ~s|JSON.parse('null')|, + "JSON.stringify({a: 1})", + "JSON.stringify([1,2,3])", + "JSON.stringify(null)", + "JSON.stringify(true)" + ] + + describe "JSON" do + for code <- @json_tests do + @tag_code code + test "#{String.slice(code, 0, 72)}", %{rt: rt} do + assert_same(rt, @tag_code) + end + end + end + + # ══════════════════════════════════════════════════════════════════════ + # Global functions + # ══════════════════════════════════════════════════════════════════════ + + @global_tests [ + ~s|parseInt("42")|, + ~s|parseInt("ff", 16)|, + ~s|parseInt("3.14")|, + ~s|parseFloat("3.14")|, + "isNaN(NaN)", + "isNaN(42)", + "isFinite(42)", + "isFinite(Infinity)", + "isFinite(NaN)", + "String(42)", + "String(true)", + "String(null)", + "Boolean(0)", + "Boolean(1)", + ~s|Boolean("")|, + ~s|Boolean("x")|, + "Number.isNaN(NaN)", + "Number.isNaN(42)", + "Number.isFinite(42)", + "Number.isFinite(Infinity)", + "Number.isInteger(42)", + "Number.isInteger(42.5)", + "Number.MAX_SAFE_INTEGER" + ] + + describe "global functions" do + for code <- @global_tests do + @tag_code code + test "#{code}", %{rt: rt} do + assert_same(rt, @tag_code) + end + end + end + + # ══════════════════════════════════════════════════════════════════════ + # Control flow & functions + # ══════════════════════════════════════════════════════════════════════ + + @flow_tests [ + "(function(x){ return x * 2 })(21)", + "(function(){ var x=3, y=4; return x+y })()", + "(function(){ if(true) return 1; return 0 })()", + "(function(){ var x=5; return x++ })()", + "(function(){ var x=5; return ++x })()", + "(function(){ var x=10; x+=5; return x })()", + "(function(){ var s=0,i=0; while(i<5){s+=i;i++} return s })()", + "(function(){ var s=0; for(var i=0;i<5;i++){s+=i} return s })()", + "(function(){ var s=0; for(var i=0;i<10;i++){if(i>2)break;s+=i} return s })()", + "(function(){ var s=0; for(var i=0;i<5;i++){if(i===2)continue;s+=i} return s })()", + "(function(){ var s=0,i=0; do{s+=i;i++}while(i<5); return s })()", + "(function f(n){ return n<=1?n:f(n-1)+f(n-2) })(10)", + # closures + "(function(){ let x=10; return (function(){ return x })() })()", + "(function(x){ return (function(){ return x })() })(42)", + "(function(){ var count=0; function inc(){count++} inc();inc(); return count })()", + # try/catch + ~s|(function(){ try{throw "err"}catch(e){return e} })()|, + "(function(){ var x=0; try{x=1}finally{x=2} return x })()", + # switch + "(function(n){ switch(n){case 1:return 'one';default:return 'other'} })(1)", + "(function(n){ switch(n){case 1:return 'one';default:return 'other'} })(3)", + # template literals + ~s|`${1 + 2}`|, + # destructuring + "(function(){ var [a,b]=[1,2]; return a+b })()", + "(function(){ var {a,b}={a:1,b:2}; return a+b })()", + # spread + "(function(){ var a=[1,2]; var b=[...a, 3]; return b })()", + "(function(){ var a={x:1}; var b={...a, y:2}; return b })()", + # for-in + ~s|(function(){ var o={a:1,b:2}; var k=[]; for(var x in o)k.push(x); return k })()|, + # default params + "(function(x, y){ if(y===undefined) y=10; return x+y })(5)" + ] + + describe "control flow & functions" do + for code <- @flow_tests do + @tag_code code + test "#{String.slice(code, 0, 72)}", %{rt: rt} do + assert_same(rt, @tag_code) + end + end + end + + # ══════════════════════════════════════════════════════════════════════ + # Type coercion + # ══════════════════════════════════════════════════════════════════════ + + @coercion_tests [ + ~s|"num:" + 42|, + ~s|42 + "!"|, + "true + 1", + "false + 1", + "null + 1", + "String(undefined)", + "Boolean(null)", + "Boolean(undefined)", + "(3.14159).toFixed(2)" + ] + + describe "type coercion" do + for code <- @coercion_tests do + @tag_code code + test "#{code}", %{rt: rt} do + assert_same(rt, @tag_code) + end + end + end + + # ══════════════════════════════════════════════════════════════════════ + # Serialization edge cases (from core/serialization_test.exs) + # ══════════════════════════════════════════════════════════════════════ + + @serialization_tests [ + "1.0", + "'héllo'", + "'日本語'", + "'Ünïcödé'", + ~s|"emoji: 🎉"|, + ~s|"🎉".length|, + ~s|"日本語".length|, + "1000000", + "[1, [2, 3], 4]", + "[1, 'two', true, null]", + "({})", + "({a: {b: 1}})", + "({items: [1, 2, 3]})", + "({a: {b: {c: 42}}})", + "({a: {b: {c: {d: 42}}}})" + ] + + describe "serialization" do + for code <- @serialization_tests do + @tag_code code + test "#{String.slice(code, 0, 72)}", %{rt: rt} do + assert_same(rt, @tag_code) + end + end + end + + # ══════════════════════════════════════════════════════════════════════ + # Recursive & complex (from quickbeam_test.exs patterns) + # ══════════════════════════════════════════════════════════════════════ + + @complex_tests [ + "(function f(n){ return n<=1?n:f(n-1)+f(n-2) })(15)", + "(function f(n){ return n<=1?1:n*f(n-1) })(10)", + "[1,2,3,4,5].filter(function(x){return x%2===0}).map(function(x){return x*x}).reduce(function(a,b){return a+b},0)", + "(function(){var n=0; function inc(){n++} inc();inc();inc(); return n})()", + "(function(){var s=0; [1,2,3,4,5].forEach(function(x){s+=x}); return s})()", + ~s|(function(){var o={a:{b:{c:42}}}; return o.a.b.c})()|, + ~s|(function(){ return " Hello World ".trim().toLowerCase().split(" ").join("-") })()|, + "(function(){var a=[5,3,8,1,2]; a.sort(function(a,b){return a-b}); return a})()", + ~s|(function(){var a=[1,2,3]; a.reverse(); return a.join(",")})()|, + ~s|JSON.parse(JSON.stringify({x:[1,2],y:"z"})).y|, + ~s|JSON.parse(JSON.stringify([1,"two",true,null]))|, + "[[1,2],[3,4],[5,6]][1][1]", + ~s|"hello world".split(" ").map(function(w){return w.charAt(0).toUpperCase()+w.slice(1)}).join(" ")|, + ~s|(function(){var o={}; for(var i=0;i<3;i++) o["k"+i]=i; return o.k0+o.k1+o.k2})()|, + "(function(x){return x>10?'big':x>5?'medium':'small'})(7)", + "(function(){var x=null; x=x||42; return x})()", + "(function(){var x=5; x=x||42; return x})()", + # this-binding + "(function(){ var o={x:10,f:function(){return this.x}}; return o.f() })()", + # get_loc0_loc1 ordering + "(function(){ var a=[2,5,8]; var m=Math.floor(1); return a[m] })()", + # deep recursion (memoized fib) + "(function(){ var m={}; function f(n){if(n in m)return m[n];if(n<=1)return n;m[n]=f(n-1)+f(n-2);return m[n]} return f(30) })()", + # rest params + "(function(...a){return a.length})(1,2,3)", + "(function(a,...b){return a+b.length})(10,20,30)", + # new Array + "new Array(3).length", + "new Array(1,2,3).length", + # string indexing + ~s|"hello"[1]|, + ~s|"hello"[0]|, + # obj method this + "(function(){var o={x:10,f:function(){return this.x}};return o.f()})()", + "(function(){var o={n:'world',greet:function(){return 'hello '+this.n}};return o.greet()})()", + # computed property key + ~s|(function(){var k="a";return {[k]:1}})()|, + # rest params edge + "(function(a,...b){return b})(1,2,3)", + # lastIndexOf + "[1,2,3,2,1].lastIndexOf(2)", + # charAt edge + ~s|"abc".charAt(-1)|, + ~s|"abc".charAt(99)|, + # array toString + "[1,2,3].toString()", + # exponent + "2**10", + # String.fromCharCode + "String.fromCharCode(72,101,108,108,111)", + # JSON.stringify undefined + "JSON.stringify(undefined)", + # negative zero + "1/(-0)===-Infinity", + "-Infinity", + "Infinity + 1 === Infinity", + # special arithmetic + "Infinity - Infinity", + "Infinity * 0", + # method shorthand + "(function(){ var o={f(){return 42}}; return o.f() })()", + # switch fallthrough + "(function(){var r='';switch(1){case 1:r+='a';case 2:r+='b';break;case 3:r+='c'}return r})()", + # while true break + "(function(){var i=0;while(true){if(i>=5)break;i++}return i})()", + # do while false + "(function(){var x=0;do{x++}while(false);return x})()", + # multi catch + "(function(){try{try{throw 1}catch(e){throw e+10}}catch(e){return e}})()", + # finally return + "(function(){try{return 1}finally{return 2}})()", + # comma operator in for + "(function(){for(var i=0,j=10;i<3;i++,j--);return i+j})()", + # neg zero + # special values + "Infinity+1===Infinity", + # concat coercion + ~s|""+0|, + ~s|""+null|, + ~s|+"42"| + ] + + describe "complex expressions" do + for code <- @complex_tests do + @tag_code code + test "#{String.slice(code, 0, 72)}", %{rt: rt} do + assert_same(rt, @tag_code) + end + end + end +end diff --git a/test/vm/interpreter_test.exs b/test/vm/interpreter_test.exs new file mode 100644 index 000000000..2f22f2b3e --- /dev/null +++ b/test/vm/interpreter_test.exs @@ -0,0 +1,378 @@ +defmodule QuickBEAM.VM.InterpreterTest do + use ExUnit.Case, async: true + + alias QuickBEAM.VM.{Bytecode, Interpreter} + + setup do + {:ok, rt} = QuickBEAM.start() + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + %{rt: rt} + end + + # Compile JS → decode → eval on BEAM + defp eval_js(rt, code) do + {:ok, bc} = QuickBEAM.compile(rt, code) + {:ok, parsed} = Bytecode.decode(bc) + Interpreter.eval(parsed.value, [], %{}, parsed.atoms) + end + + # Same but return the raw result (unwrap {:ok, _}) + defp eval_js!(rt, code) do + {:ok, result} = eval_js(rt, code) + result + end + + describe "arithmetic" do + test "integer addition", %{rt: rt} do + assert eval_js!(rt, "1 + 2") == 3 + end + + test "integer multiplication", %{rt: rt} do + assert eval_js!(rt, "6 * 7") == 42 + end + + test "integer subtraction", %{rt: rt} do + assert eval_js!(rt, "10 - 3") == 7 + end + + test "integer division", %{rt: rt} do + assert eval_js!(rt, "10 / 3") == 10 / 3 + end + + test "complex arithmetic", %{rt: rt} do + assert eval_js!(rt, "2 + 3 * 4") == 14 + end + + test "parenthesized expression", %{rt: rt} do + assert eval_js!(rt, "(2 + 3) * 4") == 20 + end + + test "unary negation", %{rt: rt} do + assert eval_js!(rt, "-42") == -42 + end + end + + describe "comparisons" do + test "less than", %{rt: rt} do + assert eval_js!(rt, "1 < 2") == true + assert eval_js!(rt, "2 < 1") == false + end + + test "greater than", %{rt: rt} do + assert eval_js!(rt, "2 > 1") == true + assert eval_js!(rt, "1 > 2") == false + end + + test "equality", %{rt: rt} do + assert eval_js!(rt, "1 === 1") == true + assert eval_js!(rt, "1 === 2") == false + end + + test "inequality", %{rt: rt} do + assert eval_js!(rt, "1 !== 2") == true + assert eval_js!(rt, "1 !== 1") == false + end + end + + describe "variables and locals" do + test "let binding", %{rt: rt} do + assert eval_js!(rt, "{ let x = 42; x }") == 42 + end + + test "multiple bindings", %{rt: rt} do + assert eval_js!(rt, "{ let a = 1; let b = 2; a + b }") == 3 + end + + test "reassignment", %{rt: rt} do + assert eval_js!(rt, "{ let x = 1; x = 2; x }") == 2 + end + end + + describe "control flow" do + test "if true", %{rt: rt} do + assert eval_js!(rt, "true ? 1 : 2") == 1 + end + + test "if false", %{rt: rt} do + assert eval_js!(rt, "false ? 1 : 2") == 2 + end + + test "if with comparison", %{rt: rt} do + assert eval_js!(rt, "{ let x = 5; if (x > 3) x; else 0 }") == 5 + end + + test "while loop", %{rt: rt} do + code = "{ let s = 0; let i = 0; while (i < 10) { s = s + i; i = i + 1; } s }" + assert eval_js!(rt, code) == 45 + end + + test "for loop", %{rt: rt} do + code = "{ let s = 0; for (let i = 0; i < 5; i = i + 1) s = s + i; s }" + assert eval_js!(rt, code) == 10 + end + end + + describe "functions" do + test "IIFE", %{rt: rt} do + assert eval_js!(rt, "(function(){return 42})()") == 42 + end + + test "IIFE with args", %{rt: rt} do + assert eval_js!(rt, "(function(a,b){return a+b})(3,4)") == 7 + end + + test "nested function", %{rt: rt} do + code = "(function(){return (function(x){return x*2})(21)})()" + assert eval_js!(rt, code) == 42 + end + end + + describe "values" do + test "null", %{rt: rt} do + assert eval_js!(rt, "null") == nil + end + + test "undefined", %{rt: rt} do + assert eval_js!(rt, "undefined") == :undefined + end + + test "true", %{rt: rt} do + assert eval_js!(rt, "true") == true + end + + test "false", %{rt: rt} do + assert eval_js!(rt, "false") == false + end + + test "string", %{rt: rt} do + assert eval_js!(rt, ~s|"hello"|) == "hello" + end + end + + describe "bitwise" do + test "AND", %{rt: rt} do + assert eval_js!(rt, "0xFF & 0x0F") == 0x0F + end + + test "OR", %{rt: rt} do + assert eval_js!(rt, "0xF0 | 0x0F") == 0xFF + end + + test "XOR", %{rt: rt} do + assert eval_js!(rt, "0xFF ^ 0x0F") == 0xF0 + end + + test "left shift", %{rt: rt} do + assert eval_js!(rt, "1 << 4") == 16 + end + + test "right shift", %{rt: rt} do + assert eval_js!(rt, "16 >> 2") == 4 + end + end + + describe "logical" do + test "logical NOT", %{rt: rt} do + assert eval_js!(rt, "!true") == false + assert eval_js!(rt, "!false") == true + end + + test "typeof", %{rt: rt} do + assert eval_js!(rt, "typeof 42") == "number" + assert eval_js!(rt, ~s|typeof "hello"|) == "string" + assert eval_js!(rt, "typeof true") == "boolean" + assert eval_js!(rt, "typeof undefined") == "undefined" + end + end + + describe "objects" do + test "object literal property access", %{rt: rt} do + assert eval_js!(rt, "({x: 1, y: 2}).x") == 1 + end + + test "object literal multiple properties", %{rt: rt} do + assert eval_js!(rt, "({x: 1, y: 2}).y") == 2 + end + + test "object property set and get", %{rt: rt} do + assert eval_js!(rt, "{ let o = {x: 1}; o.y = 2; o.x + o.y }") == 3 + end + + test "nested object", %{rt: rt} do + assert eval_js!(rt, "({a: {b: 42}}).a.b") == 42 + end + + test "object with string value", %{rt: rt} do + assert eval_js!(rt, ~s|({name: "test"}).name|) == "test" + end + end + + describe "arrays" do + test "array literal index access", %{rt: rt} do + assert eval_js!(rt, "[10, 20, 30][0]") == 10 + end + + test "array index access middle", %{rt: rt} do + assert eval_js!(rt, "[10, 20, 30][2]") == 30 + end + + test "array length", %{rt: rt} do + assert eval_js!(rt, "[1, 2, 3].length") == 3 + end + + test "empty array length", %{rt: rt} do + assert eval_js!(rt, "[].length") == 0 + end + + test "array out of bounds", %{rt: rt} do + assert eval_js!(rt, "[1,2,3][10]") == :undefined + end + end + + describe "closures" do + test "simple closure captures variable", %{rt: rt} do + code = "(function() { let x = 10; return (function() { return x })() })()" + assert eval_js!(rt, code) == 10 + end + + test "closure with argument", %{rt: rt} do + code = "(function(x) { return (function() { return x })() })(42)" + assert eval_js!(rt, code) == 42 + end + + test "closure captures local vars after arguments", %{rt: rt} do + code = "(function(a, b) { var c = 99; return (function() { return c })() })(1, 2)" + assert eval_js!(rt, code) == 99 + end + + test "default parameter scope arrow sees arguments object", %{rt: rt} do + code = + "(function() { var f = function(a, b = () => arguments) { return b; }; return f(12)()[0]; })()" + + assert eval_js!(rt, code) == 12 + end + + test "captured argument reassignment is visible inside nested callbacks", %{rt: rt} do + code = + "(function(){ function flatten(n, l){ return l = l || [], Array.isArray(n) ? n.some(function(x){ flatten(x, l) }) : l.push(n), l } return flatten([1,2,3]).length })()" + + assert eval_js!(rt, code) == 3 + end + end + + describe "string operations" do + test "string length", %{rt: rt} do + assert eval_js!(rt, ~s|"hello".length|) == 5 + end + + test "empty string length", %{rt: rt} do + assert eval_js!(rt, ~s|"".length|) == 0 + end + + test "string concatenation", %{rt: rt} do + assert eval_js!(rt, ~s|"hello" + " " + "world"|) == "hello world" + end + + test "string + number coercion", %{rt: rt} do + assert eval_js!(rt, ~s|"num: " + 42|) == "num: 42" + end + end + + describe "modulo and power" do + test "modulo", %{rt: rt} do + assert eval_js!(rt, "10 % 3") == 1 + end + + test "power", %{rt: rt} do + assert eval_js!(rt, "2 ** 10") == 1024.0 + end + end + + describe "null and undefined operators" do + test "null coalescing", %{rt: rt} do + assert eval_js!(rt, "null ?? 42") == 42 + end + + test "null coalescing non-null", %{rt: rt} do + assert eval_js!(rt, "1 ?? 42") == 1 + end + + test "optional chaining on null", %{rt: rt} do + assert eval_js!(rt, "null?.x") == :undefined + end + + test "is null check", %{rt: rt} do + assert eval_js!(rt, "null === null") == true + end + + test "undefined === undefined", %{rt: rt} do + assert eval_js!(rt, "undefined === undefined") == true + end + + test "null !== undefined (strict)", %{rt: rt} do + assert eval_js!(rt, "null !== undefined") == true + end + end + + describe "short-circuit evaluation" do + test "logical AND truthy", %{rt: rt} do + assert eval_js!(rt, "1 && 2") == 2 + end + + test "logical AND falsy", %{rt: rt} do + assert eval_js!(rt, "0 && 2") == 0 + end + + test "logical OR truthy", %{rt: rt} do + assert eval_js!(rt, "1 || 2") == 1 + end + + test "logical OR falsy", %{rt: rt} do + assert eval_js!(rt, "0 || 42") == 42 + end + end + + describe "ternary operator" do + test "ternary true branch", %{rt: rt} do + assert eval_js!(rt, "true ? 'yes' : 'no'") == "yes" + end + + test "ternary false branch", %{rt: rt} do + assert eval_js!(rt, "false ? 'yes' : 'no'") == "no" + end + + test "ternary with expression", %{rt: rt} do + assert eval_js!(rt, "(1 > 2) ? 10 : 20") == 20 + end + end + + describe "complex expressions" do + test "nested function calls", %{rt: rt} do + code = "(function(a,b){return a+b})((function(){return 3})(), 4)" + assert eval_js!(rt, code) == 7 + end + + test "fibonacci", %{rt: rt} do + code = "(function fib(n) { if (n <= 1) return n; return fib(n-1) + fib(n-2) })(10)" + assert eval_js!(rt, code) == 55 + end + + test "sum loop IIFE", %{rt: rt} do + code = "(function(n){let s=0;for(let i=0;i + {:builtin, "getStringKind", + fn + [s | _], _ when is_binary(s) -> if byte_size(s) > 256, do: 1, else: 0 + _, _ -> 0 + end} + }) + + os = Heap.wrap(%{"platform" => "elixir"}) + + Heap.put_persistent_globals( + Map.merge(Heap.get_persistent_globals(), %{ + "gc" => {:builtin, "gc", fn _, _ -> :undefined end}, + "os" => os, + "qjs" => qjs + }) + ) + + %{rt: rt} + end + + @js_dir Path.expand(".", __DIR__) + + for file <- ["test_builtin.js", "test_language.js"] do + source = File.read!(Path.join(@js_dir, file)) + skip_list = if file == "test_builtin.js", do: @skip_builtin, else: @skip_language + + {:ok, ast} = OXC.parse(source, file) + + fns = Enum.filter(ast.body, &(&1.type == :function_declaration)) + + test_fns = + fns + |> Enum.filter(&(String.starts_with?(&1.id.name, "test_") and &1.params == [])) + |> Enum.reject(&(&1.id.name in skip_list)) + + helper_fns = Enum.reject(fns, &(&1.id.name == "test")) + + for %{id: %{name: func_name}} = func <- test_fns do + func_body = binary_part(source, func.start, func[:end] - func.start) + func_line = source |> binary_part(0, func.start) |> String.split("\n") |> length() + + current_helpers = + helper_fns + |> Enum.reject(&(&1.id.name == func_name)) + |> Enum.map_join("\n", &binary_part(source, &1.start, &1[:end] - &1.start)) + + @tag :js_engine + test "#{file}: #{func_name}", %{rt: rt} do + QuickBEAM.eval(rt, unquote(current_helpers), mode: :beam) + + padding = String.duplicate("\n", unquote(func_line) - 1) + code = padding <> unquote(func_body) <> "\n" <> unquote(func_name) <> "();" + + case QuickBEAM.eval(rt, code, mode: :beam, filename: unquote(file)) do + {:ok, _} -> :ok + {:error, %QuickBEAM.JSError{message: msg}} -> flunk("JS: #{msg}") + {:error, err} -> flunk("JS error: #{inspect(err)}") + end + end + end + end + + defp strip_exports(source) do + {:ok, ast} = OXC.parse(source, "module.js") + + ast.body + + Enum.map_join(ast.body, "\n", fn + %{type: :export_named_declaration, declaration: decl} -> + binary_part(source, decl.start, decl[:end] - decl.start) + + node -> + binary_part(source, node.start, node[:end] - node.start) + end) + end +end diff --git a/test/vm/test262_test.exs b/test/vm/test262_test.exs new file mode 100644 index 000000000..9659bfe6b --- /dev/null +++ b/test/vm/test262_test.exs @@ -0,0 +1,116 @@ +defmodule QuickBEAM.VM.Test262Test do + use ExUnit.Case, async: true + + @moduletag :test262 + + @categories ~w( + language/expressions/addition + language/expressions/subtraction + language/expressions/multiplication + language/expressions/division + language/expressions/modulus + language/expressions/typeof + language/expressions/void + language/expressions/comma + language/expressions/conditional + language/expressions/logical-and + language/expressions/logical-or + language/expressions/logical-not + language/expressions/equals + language/expressions/does-not-equals + language/expressions/strict-equals + language/expressions/strict-does-not-equal + language/expressions/greater-than + language/expressions/greater-than-or-equal + language/expressions/less-than + language/expressions/less-than-or-equal + language/expressions/bitwise-and + language/expressions/bitwise-or + language/expressions/bitwise-xor + language/expressions/bitwise-not + language/expressions/left-shift + language/expressions/right-shift + language/expressions/unsigned-right-shift + language/expressions/in + language/expressions/instanceof + language/expressions/new + language/expressions/this + language/expressions/delete + language/expressions/prefix-increment + language/expressions/prefix-decrement + language/expressions/postfix-increment + language/expressions/postfix-decrement + language/expressions/unary-minus + language/expressions/unary-plus + language/statements/if + language/statements/return + language/statements/switch + language/statements/throw + language/statements/try + language/statements/do-while + language/statements/while + language/statements/for + language/statements/for-in + language/statements/break + language/statements/continue + language/statements/block + language/statements/empty + language/statements/labeled + language/statements/with + ) + + if QuickBEAM.Test262.available?() do + @skip_list QuickBEAM.Test262.load_skip_list() + + for category <- @categories, file <- QuickBEAM.Test262.find_tests(category) do + source = File.read!(file) + relative = QuickBEAM.Test262.relative_path(file) + meta = QuickBEAM.Test262.parse_metadata(source) + flags = Map.get(meta, "flags", []) + includes = Map.get(meta, "includes", []) + negative = meta["negative"] + + skip = + cond do + "async" in flags -> "async" + "module" in flags -> "module" + MapSet.member?(@skip_list, relative) -> "quickjs nif" + true -> nil + end + + if skip do + @tag skip: skip + test "test262 #{relative}" do + end + else + @tag timeout: 5_000 + test "test262 #{relative}", ctx do + harness = QuickBEAM.Test262.harness_source(unquote(includes)) + source = unquote(source) + full = harness <> "\n" <> source + + result = + try do + QuickBEAM.eval(ctx.rt, full, mode: :beam) + catch + :throw, {:js_throw, err} -> {:error, err} + end + + case {result, unquote(negative != nil)} do + {{:ok, _}, false} -> :ok + {{:error, _}, true} -> :ok + {{:ok, _}, true} -> flunk("Expected error but test passed") + {{:error, %{message: msg}}, _} -> flunk("JS: #{msg}") + {{:error, err}, _} -> flunk("Error: #{inspect(err, limit: 200)}") + end + end + end + end + end + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + %{rt: rt} + end +end diff --git a/test/vm/test_builtin.js b/test/vm/test_builtin.js new file mode 100644 index 000000000..02acc17c8 --- /dev/null +++ b/test/vm/test_builtin.js @@ -0,0 +1,1314 @@ +import * as os from "qjs:os"; +import { assert, assertThrows } from "./assert.js"; + +// Keep this at the top; it tests source positions. +function test_exception_source_pos() +{ + var e; + + try { + throw new Error(""); // line 10, column 19 + } catch(_e) { + e = _e; + } + + assert(e.stack.includes("test_builtin.js:10:19")); +} + +// Keep this at the top; it tests source positions. +function test_function_source_pos() // line 19, column 1 +{ + function inner() {} // line 21, column 5 + var f = eval("function f() {} f"); + assert(`${test_function_source_pos.lineNumber}:${test_function_source_pos.columnNumber}`, "19:1"); + assert(`${inner.lineNumber}:${inner.columnNumber}`, "21:5"); + assert(`${f.lineNumber}:${f.columnNumber}`, "1:1"); +} + +// Keep this at the top; it tests source positions. +function test_exception_prepare_stack() +{ + var e; + + Error.prepareStackTrace = (_, frames) => { + // Just return the array to check. + return frames; + }; + + try { + throw new Error(""); // line 39, column 19 + } catch(_e) { + e = _e; + } + + Error.prepareStackTrace = undefined; + + assert(e.stack.length, 2); + const f = e.stack[0]; + assert(f.getFunctionName(), 'test_exception_prepare_stack'); + assert(f.getFileName().endsWith('test_builtin.js')); + assert(f.getLineNumber(), 39); + assert(f.getColumnNumber(), 19); + assert(!f.isNative()); +} + +// Keep this at the top; it tests source positions. +function test_exception_stack_size_limit() +{ + var e; + + Error.stackTraceLimit = 1; + Error.prepareStackTrace = (_, frames) => { + // Just return the array to check. + return frames; + }; + + try { + throw new Error(""); // line 67, column 19 + } catch(_e) { + e = _e; + } + + Error.stackTraceLimit = 10; + Error.prepareStackTrace = undefined; + + assert(e.stack.length, 1); + const f = e.stack[0]; + assert(f.getFunctionName(), 'test_exception_stack_size_limit'); + assert(f.getFileName().endsWith('test_builtin.js')); + assert(f.getLineNumber(), 67); + assert(f.getColumnNumber(), 19); + assert(!f.isNative()); +} + +function test_exception_capture_stack_trace() +{ + var o = {}; + + assertThrows(TypeError, (function() { + Error.captureStackTrace(); + })); + + Error.captureStackTrace(o); + + assert(typeof o.stack === 'string'); + assert(o.stack.includes('test_exception_capture_stack_trace')); +} + +function test_exception_capture_stack_trace_filter() +{ + var o = {}; + const fun1 = () => { fun2(); }; + const fun2 = () => { fun3(); }; + const fun3 = () => { log_stack(); }; + function log_stack() { + Error.captureStackTrace(o, fun3); + } + fun1(); + + Error.captureStackTrace(o); + + assert(!o.stack.includes('fun3')); + assert(!o.stack.includes('log_stack')); +} + +function my_func(a, b) +{ + return a + b; +} + +function test_function() +{ + function f(a, b) { + var i, tab = []; + tab.push(this); + for(i = 0; i < arguments.length; i++) + tab.push(arguments[i]); + return tab; + } + function constructor1(a) { + this.x = a; + } + + var r, g; + + r = my_func.call(null, 1, 2); + assert(r, 3, "call"); + + r = my_func.apply(null, [1, 2]); + assert(r, 3, "apply"); + + r = (function () { return 1; }).apply(null, undefined); + assert(r, 1); + + assertThrows(TypeError, (function() { + Reflect.apply((function () { return 1; }), null, undefined); + })); + + r = new Function("a", "b", "return a + b;"); + assert(r(2,3), 5, "function"); + + g = f.bind(1, 2); + assert(g.length, 1); + assert(g.name, "bound f"); + assert(g(3), [1,2,3]); + + g = constructor1.bind(null, 1); + r = new g(); + assert(r.x, 1); +} + +function test() +{ + var r, a, b, c, err; + + r = Error("hello"); + assert(r.message, "hello", "Error"); + + a = new Object(); + a.x = 1; + assert(a.x, 1, "Object"); + + assert(Object.getPrototypeOf(a), Object.prototype, "getPrototypeOf"); + Object.defineProperty(a, "y", { value: 3, writable: true, configurable: true, enumerable: true }); + assert(a.y, 3, "defineProperty"); + + Object.defineProperty(a, "z", { get: function () { return 4; }, set: function(val) { this.z_val = val; }, configurable: true, enumerable: true }); + assert(a.z, 4, "get"); + a.z = 5; + assert(a.z_val, 5, "set"); + + a = { get z() { return 4; }, set z(val) { this.z_val = val; } }; + assert(a.z, 4, "get"); + a.z = 5; + assert(a.z_val, 5, "set"); + + b = Object.create(a); + assert(Object.getPrototypeOf(b), a, "create"); + c = {u:2}; + /* XXX: refcount bug in 'b' instead of 'a' */ + Object.setPrototypeOf(a, c); + assert(Object.getPrototypeOf(a), c, "setPrototypeOf"); + + a = {}; + assert(a.toString(), "[object Object]", "toString"); + + a = {x:1}; + assert(Object.isExtensible(a), true, "extensible"); + Object.preventExtensions(a); + + err = false; + try { + a.y = 2; + } catch(e) { + err = true; + } + assert(Object.isExtensible(a), false, "extensible"); + assert(typeof a.y, "undefined", "extensible"); + assert(err, true, "extensible"); + + assertThrows(TypeError, () => Object.setPrototypeOf(Object.prototype, {})); +} + +function test_enum() +{ + var a, tab; + a = {x:1, + "18014398509481984": 1, + "9007199254740992": 1, + "9007199254740991": 1, + "4294967296": 1, + "4294967295": 1, + y:1, + "4294967294": 1, + "1": 2}; + tab = Object.keys(a); +// console.log("tab=" + tab.toString()); + assert(tab, ["1","4294967294","x","18014398509481984","9007199254740992","9007199254740991","4294967296","4294967295","y"], "keys"); +} + +function test_array() +{ + var a, err; + + a = [1, 2, 3]; + assert(a.length, 3, "array"); + assert(a[2], 3, "array1"); + + a = new Array(10); + assert(a.length, 10, "array2"); + + a = new Array(1, 2); + assert(a.length === 2 && a[0] === 1 && a[1] === 2, true, "array3"); + + a = [1, 2, 3]; + a.length = 2; + assert(a.length === 2 && a[0] === 1 && a[1] === 2, true, "array4"); + + a = []; + a[1] = 10; + a[4] = 3; + assert(a.length, 5); + + a = [1,2]; + a.length = 5; + a[4] = 1; + a.length = 4; + assert(a[4] !== 1, true, "array5"); + + a = [1,2]; + a.push(3,4); + assert(a.join(), "1,2,3,4", "join"); + + a = [1,2,3,4,5]; + Object.defineProperty(a, "3", { configurable: false }); + err = false; + try { + a.length = 2; + } catch(e) { + err = true; + } + assert(err && a.toString() === "1,2,3,4"); +} + +function test_string() +{ + var a; + a = String("abc"); + assert(a.length, 3, "string"); + assert(a[1], "b", "string"); + assert(a.charCodeAt(1), 0x62, "string"); + assert(String.fromCharCode(65), "A", "string"); + assert(String.fromCharCode.apply(null, [65, 66, 67]), "ABC", "string"); + assert(a.charAt(1), "b"); + assert(a.charAt(-1), ""); + assert(a.charAt(3), ""); + + a = "abcd"; + assert(a.substring(1, 3), "bc", "substring"); + a = String.fromCharCode(0x20ac); + assert(a.charCodeAt(0), 0x20ac, "unicode"); + assert(a, "€", "unicode"); + assert(a, "\u20ac", "unicode"); + assert(a, "\u{20ac}", "unicode"); + assert("a", "\x61", "unicode"); + + a = "\u{10ffff}"; + assert(a.length, 2, "unicode"); + assert(a, "\u{dbff}\u{dfff}", "unicode"); + assert(a.codePointAt(0), 0x10ffff); + assert(String.fromCodePoint(0x10ffff), a); + + assert("a".concat("b", "c"), "abc"); + + assert("abcabc".indexOf("cab"), 2); + assert("abcabc".indexOf("cab2"), -1); + assert("abc".indexOf("c"), 2); + + assert("aaa".indexOf("a"), 0); + assert("aaa".indexOf("a", NaN), 0); + assert("aaa".indexOf("a", -Infinity), 0); + assert("aaa".indexOf("a", -1), 0); + assert("aaa".indexOf("a", -0), 0); + assert("aaa".indexOf("a", 0), 0); + assert("aaa".indexOf("a", 1), 1); + assert("aaa".indexOf("a", 2), 2); + assert("aaa".indexOf("a", 3), -1); + assert("aaa".indexOf("a", 4), -1); + assert("aaa".indexOf("a", Infinity), -1); + + assert("aaa".indexOf(""), 0); + assert("aaa".indexOf("", NaN), 0); + assert("aaa".indexOf("", -Infinity), 0); + assert("aaa".indexOf("", -1), 0); + assert("aaa".indexOf("", -0), 0); + assert("aaa".indexOf("", 0), 0); + assert("aaa".indexOf("", 1), 1); + assert("aaa".indexOf("", 2), 2); + assert("aaa".indexOf("", 3), 3); + assert("aaa".indexOf("", 4), 3); + assert("aaa".indexOf("", Infinity), 3); + + assert("aaa".lastIndexOf("a"), 2); + assert("aaa".lastIndexOf("a", NaN), 2); + assert("aaa".lastIndexOf("a", -Infinity), 0); + assert("aaa".lastIndexOf("a", -1), 0); + assert("aaa".lastIndexOf("a", -0), 0); + assert("aaa".lastIndexOf("a", 0), 0); + assert("aaa".lastIndexOf("a", 1), 1); + assert("aaa".lastIndexOf("a", 2), 2); + assert("aaa".lastIndexOf("a", 3), 2); + assert("aaa".lastIndexOf("a", 4), 2); + assert("aaa".lastIndexOf("a", Infinity), 2); + + assert("aaa".lastIndexOf(""), 3); + assert("aaa".lastIndexOf("", NaN), 3); + assert("aaa".lastIndexOf("", -Infinity), 0); + assert("aaa".lastIndexOf("", -1), 0); + assert("aaa".lastIndexOf("", -0), 0); + assert("aaa".lastIndexOf("", 0), 0); + assert("aaa".lastIndexOf("", 1), 1); + assert("aaa".lastIndexOf("", 2), 2); + assert("aaa".lastIndexOf("", 3), 3); + assert("aaa".lastIndexOf("", 4), 3); + assert("aaa".lastIndexOf("", Infinity), 3); + + assert("a,b,c".split(","), ["a","b","c"]); + assert(",b,c".split(","), ["","b","c"]); + assert("a,b,".split(","), ["a","b",""]); + + assert("aaaa".split(), [ "aaaa" ]); + assert("aaaa".split(undefined, 0), [ ]); + assert("aaaa".split(""), [ "a", "a", "a", "a" ]); + assert("aaaa".split("", 0), [ ]); + assert("aaaa".split("", 1), [ "a" ]); + assert("aaaa".split("", 2), [ "a", "a" ]); + assert("aaaa".split("a"), [ "", "", "", "", "" ]); + assert("aaaa".split("a", 2), [ "", "" ]); + assert("aaaa".split("aa"), [ "", "", "" ]); + assert("aaaa".split("aa", 0), [ ]); + assert("aaaa".split("aa", 1), [ "" ]); + assert("aaaa".split("aa", 2), [ "", "" ]); + assert("aaaa".split("aaa"), [ "", "a" ]); + assert("aaaa".split("aaaa"), [ "", "" ]); + assert("aaaa".split("aaaaa"), [ "aaaa" ]); + assert("aaaa".split("aaaaa", 0), [ ]); + assert("aaaa".split("aaaaa", 1), [ "aaaa" ]); + + assert(eval('"\0"'), "\0"); + + assert("abc".padStart(Infinity, ""), "abc"); + + assert(qjs.getStringKind("xyzzy".slice(1)), + /*JS_STRING_KIND_NORMAL*/0); + assert(qjs.getStringKind("xyzzy".repeat(512).slice(1)), + /*JS_STRING_KIND_SLICE*/1); +} + +function rope_concat(n, dir) +{ + var i, s; + s = ""; + if (dir > 0) { + for(i = 0; i < n; i++) + s += String.fromCharCode(i & 0xffff); + } else { + for(i = n - 1; i >= 0; i--) + s = String.fromCharCode(i & 0xffff) + s; + } + + for(i = 0; i < n; i++) { + /* test before the assert to go faster */ + if (s.charCodeAt(i) != (i & 0xffff)) { + assert(s.charCodeAt(i), i & 0xffff); + } + } +} + +function test_rope() +{ + var i, s, s2; + + /* test forward and backward concatenation */ + rope_concat(100000, 1); + rope_concat(100000, -1); + + /* test rope comparison */ + s = ""; + s2 = ""; + for (i = 0; i < 10000; i++) { + s += "abc"; + s2 += "abc"; + } + assert(s === s2, true); + assert(s < s2, false); + assert(s > s2, false); + + /* test rope indexing */ + s = ""; + for (i = 0; i < 10000; i++) + s += "x"; + assert(s.length, 10000); + assert(s[0], "x"); + assert(s[5000], "x"); + assert(s[9999], "x"); + + /* test rope with string methods */ + s = ""; + for (i = 0; i < 1000; i++) + s += "test"; + assert(s.indexOf("test"), 0); + assert(s.lastIndexOf("test"), 3996); + assert(s.includes("test"), true); + assert(s.slice(0, 8), "testtest"); + assert(s.substring(0, 8), "testtest"); +} + +function test_math() +{ + var a; + a = 1.4; + assert(Math.floor(a), 1); + assert(Math.ceil(a), 2); + assert(Math.imul(0x12345678, 123), -1088058456); + assert(Math.imul(0xB505, 0xB504), 2147441940); + assert(Math.imul(0xB505, 0xB505), -2147479015); + assert(Math.imul((-2)**31, (-2)**31), 0); + assert(Math.imul(2**31-1, 2**31-1), 1); + assert(Math.fround(0.1), 0.10000000149011612); + assert(Math.hypot(), 0); + assert(Math.hypot(-2), 2); + assert(Math.hypot(3, 4), 5); + assert(Math.abs(Math.hypot(3, 4, 5) - 7.0710678118654755) <= 1e-15); + assert(Math.sumPrecise([1,Number.EPSILON/2,Number.MIN_VALUE]), 1.0000000000000002); +} + +function test_number() +{ + assert(parseInt("123"), 123); + assert(parseInt(" 123r"), 123); + assert(parseInt("0x123"), 0x123); + assert(parseInt("0o123"), 0); + assert(+" 123 ", 123); + assert(+"0b111", 7); + assert(+"0o123", 83); + assert(parseFloat("2147483647"), 2147483647); + assert(parseFloat("2147483648"), 2147483648); + assert(parseFloat("-2147483647"), -2147483647); + assert(parseFloat("-2147483648"), -2147483648); + assert(parseFloat("0x1234"), 0); + assert(parseFloat("Infinity"), Infinity); + assert(parseFloat("-Infinity"), -Infinity); + assert(parseFloat("123.2"), 123.2); + assert(parseFloat("123.2e3"), 123200); + assert(Number.isNaN(Number("+"))); + assert(Number.isNaN(Number("-"))); + assert(Number.isNaN(Number("\x00a"))); + + assert((1-2**-53).toString(12), "0.bbbbbbbbbbbbbba"); + assert((1000000000000000128).toString(), "1000000000000000100"); + assert((1000000000000000128).toFixed(0), "1000000000000000128"); + assert((25).toExponential(0), "3e+1"); + assert((-25).toExponential(0), "-3e+1"); + assert((2.5).toPrecision(1), "3"); + assert((-2.5).toPrecision(1), "-3"); + assert((25).toPrecision(1) === "3e+1"); + assert((1.125).toFixed(2), "1.13"); + assert((-1.125).toFixed(2), "-1.13"); + assert((0.5).toFixed(0), "1"); + assert((-0.5).toFixed(0), "-1"); + assert((-1e-10).toFixed(0), "-0"); + + assert((1.3).toString(7), "1.2046204620462046205"); + assert((1.3).toString(35), "1.ahhhhhhhhhm"); + + assert((123.456).toExponential(100), + "1.2345600000000000306954461848363280296325683593750000000000000000000000000000000000000000000000000000e+2"); + assert((1.23e-99).toExponential(100), + "1.2299999999999999636794326616259654935901564299639709630577493044757187515388707554223010856511630028e-99"); + assert((-0.0007).toExponential(100), + "-6.9999999999999999288763374849509091291110962629318237304687500000000000000000000000000000000000000000e-4"); + assert((0).toExponential(100), + "0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000e+0"); +} + +function test_eval2() +{ + var g_call_count = 0; + /* force non strict mode for f1 and f2 */ + var f1 = new Function("eval", "eval(1, 2)"); + var f2 = new Function("eval", "eval(...[1, 2])"); + function g(a, b) { + assert(a, 1); + assert(b, 2); + g_call_count++; + } + f1(g); + f2(g); + assert(g_call_count, 2); + var e; + try { + new class extends Object { + constructor() { + (() => { + for (const _ in this); + eval(""); + })(); + } + }; + } catch (_e) { + e = _e; + } + assert(e?.message, "this is not initialized"); +} + +function test_eval() +{ + function f(b) { + var x = 1; + return eval(b); + } + var r, a; + + r = eval("1+1;"); + assert(r, 2, "eval"); + + r = eval("var my_var=2; my_var;"); + assert(r, 2, "eval"); + assert(typeof my_var, "undefined"); + + assert(eval("if (1) 2; else 3;"), 2); + assert(eval("if (0) 2; else 3;"), 3); + + assert(f.call(1, "this"), 1); + + a = 2; + assert(eval("a"), 2); + + eval("a = 3"); + assert(a, 3); + + assert(f("arguments.length", 1), 2); + assert(f("arguments[1]", 1), 1); + + a = 4; + assert(f("a"), 4); + f("a=3"); + assert(a, 3); + + test_eval2(); +} + +function test_typed_array() +{ + var buffer, a, i, str, b; + + a = new Uint8Array(4); + assert(a.length, 4); + for(i = 0; i < a.length; i++) + a[i] = i; + assert(a.join(","), "0,1,2,3"); + a[0] = -1; + assert(a[0], 255); + + a = new Int8Array(3); + a[0] = 255; + assert(a[0], -1); + + a = new Int32Array(3); + a[0] = Math.pow(2, 32) - 1; + assert(a[0], -1); + assert(a.BYTES_PER_ELEMENT, 4); + + a = new Uint8ClampedArray(4); + a[0] = -100; + a[1] = 1.5; + a[2] = 0.5; + a[3] = 1233.5; + assert(a.toString(), "0,2,0,255"); + + buffer = new ArrayBuffer(16); + assert(buffer.byteLength, 16); + a = new Uint32Array(buffer, 12, 1); + assert(a.length, 1); + a[0] = -1; + + a = new Uint16Array(buffer, 2); + a[0] = -1; + + a = new Float16Array(buffer, 8, 1); + a[0] = 1; + + a = new Float32Array(buffer, 8, 1); + a[0] = 1; + + a = new Uint8Array(buffer); + + str = a.toString(); + /* test little and big endian cases */ + if (str !== "0,0,255,255,0,0,0,0,0,0,128,63,255,255,255,255" && + str !== "0,0,255,255,0,0,0,0,63,128,0,0,255,255,255,255") { + assert(false); + } + + assert(a.buffer, buffer); + + a = new Uint8Array([1, 2, 3, 4]); + assert(a.toString(), "1,2,3,4"); + a.set([10, 11], 2); + assert(a.toString(), "1,2,10,11"); + + a = new Uint8Array(buffer, 0, 4); + a.constructor = { + [Symbol.species]: function (len) { + return new Uint8Array(buffer, 1, len); + }, + }; + b = a.slice(); + assert(a.buffer, b.buffer); + assert(a.toString(), "0,0,0,255"); + assert(b.toString(), "0,0,255,255"); + + const TypedArray = class extends Object.getPrototypeOf(Uint8Array) {}; + let caught = false; + try { + new TypedArray(); // extensible but not instantiable + } catch (e) { + assert(e instanceof TypeError); + assert(/cannot be called/.test(e.message)); + caught = true; + } + assert(caught); + + // https://github.com/quickjs-ng/quickjs/issues/1208 + buffer = new ArrayBuffer(16); + a = new Uint8Array(buffer); + a.fill(42); + assert(a[0], 42); + buffer.transfer(); + assert(a[0], undefined); + + // https://github.com/quickjs-ng/quickjs/issues/1210 + var buffer = new ArrayBuffer(16, {maxByteLength: 16}); + var desc = Object.getOwnPropertyDescriptor(ArrayBuffer, Symbol.species); + assert(typeof desc.get, "function"); + var get = function() { + buffer.resize(1); + return ArrayBuffer; + }; + Object.defineProperty(ArrayBuffer, Symbol.species, {...desc, get}); + let ex; + try { + buffer.slice(); + } catch (ex_) { + ex = ex_; + } + Object.defineProperty(ArrayBuffer, Symbol.species, desc); // restore + assert(ex instanceof TypeError); + assert("ArrayBuffer is detached", ex.message); + + var buffer = new ArrayBuffer(2); + var ta = new Uint16Array(buffer); + var desc = Object.getOwnPropertyDescriptor(ta, "0"); + ta[0] = 42; + assert(ta[0], 42); + Object.defineProperty(ta, "0", {value: 1337}); + assert(ta[0], 1337); + assert(desc.writable, true); + assert(desc.enumerable, true); + assert(desc.configurable, true); + + var buffer = new ArrayBuffer(2).sliceToImmutable(); + var ta = new Uint16Array(buffer); + var desc = Object.getOwnPropertyDescriptor(ta, "0"); + ta[0] = 42; + assert(ta[0], 0); + Object.defineProperty(ta, "0", {value: 1337}); + assert(ta[0], 0); + assert(desc.writable, false); + assert(desc.enumerable, true); + assert(desc.configurable, false); +} + +function test_json() +{ + var a, s; + s = '{"x":1,"y":true,"z":null,"a":[1,2,3],"s":"str"}'; + a = JSON.parse(s); + assert(a.x, 1); + assert(a.y, true); + assert(a.z, null); + assert(JSON.stringify(a), s); + + /* indentation test */ + assert(JSON.stringify([[{x:1,y:{},z:[]},2,3]],undefined,1), +`[ + [ + { + "x": 1, + "y": {}, + "z": [] + }, + 2, + 3 + ] +]`); +} + +function test_date() +{ + // Date Time String format is YYYY-MM-DDTHH:mm:ss.sssZ + // accepted date formats are: YYYY, YYYY-MM and YYYY-MM-DD + // accepted time formats are: THH:mm, THH:mm:ss, THH:mm:ss.sss + // expanded years are represented with 6 digits prefixed by + or - + // -000000 is invalid. + // A string containing out-of-bounds or nonconforming elements + // is not a valid instance of this format. + // Hence the fractional part after . should have 3 digits and how + // a different number of digits is handled is implementation defined. + assert(Date.parse(""), NaN); + assert(Date.parse("13"), NaN); + assert(Date.parse("31"), NaN); + assert(Date.parse("1000"), -30610224000000); + assert(Date.parse("1969"), -31536000000); + assert(Date.parse("1970"), 0); + assert(Date.parse("2000"), 946684800000); + assert(Date.parse("9999"), 253370764800000); + assert(Date.parse("275761"), NaN); + assert(Date.parse("999999"), NaN); + assert(Date.parse("1000000000"), NaN); + assert(Date.parse("-271821"), NaN); + assert(Date.parse("-271820"), -8639977881600000); + assert(Date.parse("-100000"), -3217862419200000); + assert(Date.parse("+100000"), 3093527980800000); + assert(Date.parse("+275760"), 8639977881600000); + assert(Date.parse("+275761"), NaN); + assert(Date.parse("2000-01"), 946684800000); + assert(Date.parse("2000-01-01"), 946684800000); + assert(Date.parse("2000-01-01T"), NaN); + assert(Date.parse("2000-01-01T00Z"), NaN); + assert(Date.parse("2000-01-01T00:00Z"), 946684800000); + assert(Date.parse("2000-01-01T00:00:00Z"), 946684800000); + assert(Date.parse("2000-01-01T00:00:00.1Z"), 946684800100); + assert(Date.parse("2000-01-01T00:00:00.10Z"), 946684800100); + assert(Date.parse("2000-01-01T00:00:00.100Z"), 946684800100); + assert(Date.parse("2000-01-01T00:00:00.1000Z"), 946684800100); + assert(Date.parse("2000-01-01T00:00:00+00:00"), 946684800000); + //assert(Date.parse("2000-01-01T00:00:00+00:30"), 946686600000); + var d = new Date("2000T00:00"); // Jan 1st 2000, 0:00:00 local time + assert(typeof d === 'object' && d.toString() != 'Invalid Date'); + assert((new Date('Jan 1 2000')).toISOString(), + d.toISOString()); + assert((new Date('Jan 1 2000 00:00')).toISOString(), + d.toISOString()); + assert((new Date('Jan 1 2000 00:00:00')).toISOString(), + d.toISOString()); + assert((new Date('Jan 1 2000 00:00:00 GMT+0100')).toISOString(), + '1999-12-31T23:00:00.000Z'); + assert((new Date('Jan 1 2000 00:00:00 GMT+0200')).toISOString(), + '1999-12-31T22:00:00.000Z'); + assert((new Date('Sat Jan 1 2000')).toISOString(), + d.toISOString()); + assert((new Date('Sat Jan 1 2000 00:00')).toISOString(), + d.toISOString()); + assert((new Date('Sat Jan 1 2000 00:00:00')).toISOString(), + d.toISOString()); + assert((new Date('Sat Jan 1 2000 00:00:00 GMT+0100')).toISOString(), + '1999-12-31T23:00:00.000Z'); + assert((new Date('Sat Jan 1 2000 00:00:00 GMT+0200')).toISOString(), + '1999-12-31T22:00:00.000Z'); + + var d = new Date(1506098258091); + assert(d.toISOString(), "2017-09-22T16:37:38.091Z"); + d.setUTCHours(18, 10, 11); + assert(d.toISOString(), "2017-09-22T18:10:11.091Z"); + var a = Date.parse(d.toISOString()); + assert((new Date(a)).toISOString(), d.toISOString()); + + assert((new Date("2020-01-01T01:01:01.123Z")).toISOString(), + "2020-01-01T01:01:01.123Z"); + /* implementation defined behavior */ + assert((new Date("2020-01-01T01:01:01.1Z")).toISOString(), + "2020-01-01T01:01:01.100Z"); + assert((new Date("2020-01-01T01:01:01.12Z")).toISOString(), + "2020-01-01T01:01:01.120Z"); + assert((new Date("2020-01-01T01:01:01.1234Z")).toISOString(), + "2020-01-01T01:01:01.123Z"); + assert((new Date("2020-01-01T01:01:01.12345Z")).toISOString(), + "2020-01-01T01:01:01.123Z"); + assert((new Date("2020-01-01T01:01:01.1235Z")).toISOString(), + "2020-01-01T01:01:01.123Z"); + assert((new Date("2020-01-01T01:01:01.9999Z")).toISOString(), + "2020-01-01T01:01:01.999Z"); + + assert(Date.UTC(2017), 1483228800000); + assert(Date.UTC(2017, 9), 1506816000000); + assert(Date.UTC(2017, 9, 22), 1508630400000); + assert(Date.UTC(2017, 9, 22, 18), 1508695200000); + assert(Date.UTC(2017, 9, 22, 18, 10), 1508695800000); + assert(Date.UTC(2017, 9, 22, 18, 10, 11), 1508695811000); + assert(Date.UTC(2017, 9, 22, 18, 10, 11, 91), 1508695811091); + + assert(Date.UTC(NaN), NaN); + assert(Date.UTC(2017, NaN), NaN); + assert(Date.UTC(2017, 9, NaN), NaN); + assert(Date.UTC(2017, 9, 22, NaN), NaN); + assert(Date.UTC(2017, 9, 22, 18, NaN), NaN); + assert(Date.UTC(2017, 9, 22, 18, 10, NaN), NaN); + assert(Date.UTC(2017, 9, 22, 18, 10, 11, NaN), NaN); + assert(Date.UTC(2017, 9, 22, 18, 10, 11, 91, NaN), 1508695811091); + + // TODO: Fix rounding errors on Windows/Cygwin. + if (!['win32', 'cygwin'].includes(os.platform)) { + // from test262/test/built-ins/Date/UTC/fp-evaluation-order.js + assert(Date.UTC(1970, 0, 1, 80063993375, 29, 1, -288230376151711740), 29312, + 'order of operations / precision in MakeTime'); + assert(Date.UTC(1970, 0, 213503982336, 0, 0, 0, -18446744073709552000), 34447360, + 'precision in MakeDate'); + } + //assert(Date.UTC(2017 - 1e9, 9 + 12e9), 1506816000000); // node fails this + assert(Date.UTC(2017, 9, 22 - 1e10, 18 + 24e10), 1508695200000); + assert(Date.UTC(2017, 9, 22, 18 - 1e10, 10 + 60e10), 1508695800000); + assert(Date.UTC(2017, 9, 22, 18, 10 - 1e10, 11 + 60e10), 1508695811000); + assert(Date.UTC(2017, 9, 22, 18, 10, 11 - 1e12, 91 + 1000e12), 1508695811091); + assert(new Date("2024 Apr 7 1:00 AM").toLocaleString(), "04/07/2024, 01:00:00 AM"); + assert(new Date("2024 Apr 7 2:00 AM").toLocaleString(), "04/07/2024, 02:00:00 AM"); + assert(new Date("2024 Apr 7 11:00 AM").toLocaleString(), "04/07/2024, 11:00:00 AM"); + assert(new Date("2024 Apr 7 12:00 AM").toLocaleString(), "04/07/2024, 12:00:00 AM"); + assert(new Date("2024 Apr 7 1:00 PM").toLocaleString(), "04/07/2024, 01:00:00 PM"); + assert(new Date("2024 Apr 7 2:00 PM").toLocaleString(), "04/07/2024, 02:00:00 PM"); + assert(new Date("2024 Apr 7 11:00 PM").toLocaleString(), "04/07/2024, 11:00:00 PM"); + assert(new Date("2024 Apr 7 12:00 PM").toLocaleString(), "04/07/2024, 12:00:00 PM"); +} + +function test_regexp() +{ + var a, str; + str = "abbbbbc"; + a = /(b+)c/.exec(str); + assert(a[0], "bbbbbc"); + assert(a[1], "bbbbb"); + assert(a.index, 1); + assert(a.input, str); + a = /(b+)c/.test(str); + assert(a, true); + assert(/\x61/.exec("a")[0], "a"); + assert(/\u0061/.exec("a")[0], "a"); + assert(/\ca/.exec("\x01")[0], "\x01"); + assert(/\\a/.exec("\\a")[0], "\\a"); + assert(/\c0/.exec("\\c0")[0], "\\c0"); + + a = /(\.(?=com|org)|\/)/.exec("ah.com"); + assert(a.index === 2 && a[0] === "."); + + a = /(\.(?!com|org)|\/)/.exec("ah.com"); + assert(a, null); + + a = /(?=(a+))/.exec("baaabac"); + assert(a.index === 1 && a[0] === "" && a[1] === "aaa"); + + a = /(z)((a+)?(b+)?(c))*/.exec("zaacbbbcac"); + assert(a, ["zaacbbbcac","z","ac","a",,"c"]); + + a = eval("/\0a/"); + assert(a.toString(), "/\0a/"); + assert(a.exec("\0a")[0], "\0a"); + + assert(/{1a}/.toString(), "/{1a}/"); + a = /a{1+/.exec("a{11"); + assert(a, ["a{11"] ); + + eval("/[a-]/"); // accepted with no flag + eval("/[a-]/u"); // accepted with 'u' flag + + let ex; + try { + eval("/[a-]/v"); // rejected with 'v' flag + } catch (_ex) { + ex = _ex; + } + assert(ex?.message, "invalid class range"); + + eval("/[\\-]/"); + eval("/[\\-]/u"); + + /* test zero length matches */ + a = /()*?a/.exec(","); + assert(a, null); + a = /(?:(?=(abc)))a/.exec("abc"); + assert(a, ["a", "abc"]); + a = /(?:(?=(abc)))?a/.exec("abc"); + assert(a, ["a", undefined]); + a = /(?:(?=(abc))){0,2}a/.exec("abc"); + assert(a, ["a", undefined]); + a = /(?:|[\w])+([0-9])/.exec("123a23"); + assert(a, ["123a23", "3"]); + a = "ab".split(/(c)*/); + assert(a, ["a", undefined, "b"]); +} + +function test_symbol() +{ + var a, b, obj, c; + a = Symbol("abc"); + obj = {}; + obj[a] = 2; + assert(obj[a], 2); + assert(typeof obj["abc"], "undefined"); + assert(String(a), "Symbol(abc)"); + b = Symbol("abc"); + assert(a == a); + assert(a === a); + assert(a != b); + assert(a !== b); + + b = Symbol.for("abc"); + c = Symbol.for("abc"); + assert(b === c); + assert(b !== a); + + assert(Symbol.keyFor(b), "abc"); + assert(Symbol.keyFor(a), undefined); + + a = Symbol("aaa"); + assert(a.valueOf(), a); + assert(a.toString(), "Symbol(aaa)"); + + b = Object(a); + assert(b.valueOf(), a); + assert(b.toString(), "Symbol(aaa)"); +} + +function test_map() +{ + var a, i, n, tab, o, v; + n = 1000; + + a = new Map(); + for (var i = 0; i < n; i++) { + a.set(i, i); + } + a.set(-2147483648, 1); + assert(a.get(-2147483648), 1); + assert(a.get(-2147483647 - 1), 1); + assert(a.get(-2147483647.5 - 0.5), 1); + + a = new Map(); + tab = []; + for(i = 0; i < n; i++) { + v = { }; + o = { id: i }; + tab[i] = [o, v]; + a.set(o, v); + } + + assert(a.size, n); + for(i = 0; i < n; i++) { + assert(a.get(tab[i][0]), tab[i][1]); + } + + i = 0; + a.forEach(function (v, o) { + assert(o, tab[i++][0]); + assert(a.has(o)); + assert(a.delete(o)); + assert(!a.has(o)); + }); + + assert(a.size, 0); +} + +function test_weak_map() +{ + var a, e, i, n, tab, o, v, n2; + a = new WeakMap(); + n = 10; + tab = []; + for (const k of [null, 42, "no", Symbol.for("forbidden")]) { + e = undefined; + try { + a.set(k, 42); + } catch (_e) { + e = _e; + } + assert(!!e); + assert(e.message, "invalid value used as WeakMap key"); + } + for(i = 0; i < n; i++) { + v = { }; + o = { id: i }; + tab[i] = [o, v]; + a.set(o, v); + } + o = null; + + n2 = n >> 1; + for(i = 0; i < n2; i++) { + a.delete(tab[i][0]); + } + for(i = n2; i < n; i++) { + tab[i][0] = null; /* should remove the object from the WeakMap too */ + } + /* the WeakMap should be empty here */ +} + +function test_set() +{ + const iter = { + a: [4, 5, 6], + nextCalls: 0, + returnCalls: 0, + next() { + const done = this.nextCalls >= this.a.length + const value = this.a[this.nextCalls] + this.nextCalls++ + return {done, value} + }, + return() { + this.returnCalls++ + return this + }, + } + const setlike = { + size: iter.a.length, + has(v) { return iter.a.includes(v) }, + keys() { return iter }, + } + // set must be bigger than iter.a to hit iter.next and iter.return + assert(new Set([4,5,6,7]).isSupersetOf(setlike), true) + assert(iter.nextCalls, 4) + assert(iter.returnCalls, 0) + iter.nextCalls = iter.returnCalls = 0 + assert(new Set([0,1,2,3]).isSupersetOf(setlike), false) + assert(iter.nextCalls, 1) + assert(iter.returnCalls, 1) + iter.nextCalls = iter.returnCalls = 0 + // set must be bigger than iter.a to hit iter.next and iter.return + assert(new Set([4,5,6,7]).isDisjointFrom(setlike), false) + assert(iter.nextCalls, 1) + assert(iter.returnCalls, 1) + iter.nextCalls = iter.returnCalls = 0 + assert(new Set([0,1,2,3]).isDisjointFrom(setlike), true) + assert(iter.nextCalls, 4) + assert(iter.returnCalls, 0) + iter.nextCalls = iter.returnCalls = 0 + function expectException(klass, sizes) { + for (const size of sizes) { + let ex + try { + new Set([]).union({size}) + } catch (e) { + ex = e + } + assert(ex instanceof klass) + assert(typeof ex.message, "string") + assert(ex.message.includes(".size")) + } + } + expectException(RangeError, [-1, -(Number.MAX_SAFE_INTEGER+1), -Infinity]) + expectException(TypeError, [NaN]) + const legal = [ + 0, -0, 1, 2, + Number.MAX_SAFE_INTEGER + 1, + Number.MAX_SAFE_INTEGER + 2, + Number.MAX_SAFE_INTEGER + 3, + Infinity + ] + for (const size of legal) { + new Set([]).union({ + size, + has() { return false }, + keys() { return [].values() }, + }) + } +} + +function test_weak_set() +{ + var a, e; + a = new WeakSet(); + for (const k of [null, 42, "no", Symbol.for("forbidden")]) { + e = undefined; + try { + a.add(k); + } catch (_e) { + e = _e; + } + assert(!!e); + assert(e.message, "invalid value used as WeakSet key"); + } +} + +function test_generator() +{ + function *f() { + var ret; + yield 1; + ret = yield 2; + assert(ret, "next_arg"); + return 3; + } + function *f2() { + yield 1; + yield 2; + return "ret_val"; + } + function *f1() { + var ret = yield *f2(); + assert(ret, "ret_val"); + return 3; + } + function *f3() { + var ret; + /* test stack consistency with nip_n to handle yield return + + * finally clause */ + try { + ret = 2 + (yield 1); + } catch(e) { + } finally { + ret++; + } + return ret; + } + var g, v; + g = f(); + v = g.next(); + assert(v.value === 1 && v.done === false); + v = g.next(); + assert(v.value === 2 && v.done === false); + v = g.next("next_arg"); + assert(v.value === 3 && v.done === true); + v = g.next(); + assert(v.value === undefined && v.done === true); + + g = f1(); + v = g.next(); + assert(v.value === 1 && v.done === false); + v = g.next(); + assert(v.value === 2 && v.done === false); + v = g.next(); + assert(v.value === 3 && v.done === true); + v = g.next(); + assert(v.value === undefined && v.done === true); + + g = f3(); + v = g.next(); + assert(v.value === 1 && v.done === false); + v = g.next(3); + assert(v.value === 6 && v.done === true); +} + +function test_proxy_iter() +{ + const p = new Proxy({}, { + getOwnPropertyDescriptor() { + return {configurable: true, enumerable: true, value: 42}; + }, + ownKeys() { + return ["x", "y"]; + }, + }); + const a = []; + for (const x in p) a.push(x); + assert(a[0], "x"); + assert(a[1], "y"); +} + +/* CVE-2023-31922 */ +function test_proxy_is_array() +{ + for (var r = new Proxy([], {}), y = 0; y < 331072; y++) + r = new Proxy(r, {}); + + try { + /* Without ASAN */ + assert(Array.isArray(r)); + } catch(e) { + /* With ASAN expect RangeError "Maximum call stack size exceeded" to be raised */ + if (e instanceof RangeError) { + assert(e.message, "Maximum call stack size exceeded", "Stack overflow error was not raised") + } else { + throw e; + } + } +} + +function test_finalization_registry() +{ + { + let expected = {}; + let actual; + let finrec = new FinalizationRegistry(v => { actual = v }); + finrec.register({}, expected); + queueMicrotask(() => { + assert(actual, expected); + }); + } + { + let expected = 42; + let actual; + let finrec = new FinalizationRegistry(v => { actual = v }); + finrec.register({}, expected); + queueMicrotask(() => { + assert(actual, expected); + }); + } +} + +function test_cur_pc() +{ + var a = []; + Object.defineProperty(a, '1', { + get: function() { throw Error("a[1]_get"); }, + set: function(x) { throw Error("a[1]_set"); } + }); + assertThrows(Error, function() { return a[1]; }); + assertThrows(Error, function() { a[1] = 1; }); + assertThrows(Error, function() { return [...a]; }); + assertThrows(Error, function() { return ({...b} = a); }); + + var o = {}; + Object.defineProperty(o, 'x', { + get: function() { throw Error("o.x_get"); }, + set: function(x) { throw Error("o.x_set"); } + }); + o.valueOf = function() { throw Error("o.valueOf"); }; + assertThrows(Error, function() { return +o; }); + assertThrows(Error, function() { return -o; }); + assertThrows(Error, function() { return o+1; }); + assertThrows(Error, function() { return o-1; }); + assertThrows(Error, function() { return o*1; }); + assertThrows(Error, function() { return o/1; }); + assertThrows(Error, function() { return o%1; }); + assertThrows(Error, function() { return o**1; }); + assertThrows(Error, function() { return o<<1; }); + assertThrows(Error, function() { return o>>1; }); + assertThrows(Error, function() { return o>>>1; }); + assertThrows(Error, function() { return o&1; }); + assertThrows(Error, function() { return o|1; }); + assertThrows(Error, function() { return o^1; }); + assertThrows(Error, function() { return o<1; }); + assertThrows(Error, function() { return o==1; }); + assertThrows(Error, function() { return o++; }); + assertThrows(Error, function() { return o--; }); + assertThrows(Error, function() { return ++o; }); + assertThrows(Error, function() { return --o; }); + assertThrows(Error, function() { return ~o; }); + + Object.defineProperty(globalThis, 'xxx', { + get: function() { throw Error("xxx_get"); }, + set: function(x) { throw Error("xxx_set"); } + }); + assertThrows(Error, function() { return xxx; }); + assertThrows(Error, function() { xxx = 1; }); +} + +test(); +test_function(); +test_enum(); +test_array(); +test_string(); +test_rope(); +test_math(); +test_number(); +test_eval(); +test_typed_array(); +test_json(); +test_date(); +test_regexp(); +test_symbol(); +test_map(); +test_weak_map(); +test_set(); +test_weak_set(); +test_generator(); +test_proxy_iter(); +test_proxy_is_array(); +test_finalization_registry(); +test_exception_source_pos(); +test_function_source_pos(); +test_exception_prepare_stack(); +test_exception_stack_size_limit(); +test_exception_capture_stack_trace(); +test_exception_capture_stack_trace_filter(); +test_cur_pc(); diff --git a/test/vm/test_language.js b/test/vm/test_language.js new file mode 100644 index 000000000..1050c58c5 --- /dev/null +++ b/test/vm/test_language.js @@ -0,0 +1,762 @@ +// This test cannot use imports because it needs to run in non-strict mode. + +function assert(actual, expected, message) { + if (arguments.length == 1) + expected = true; + + if (actual === expected) + return; + + if (typeof actual == 'number' && isNaN(actual) + && typeof expected == 'number' && isNaN(expected)) + return; + + if (actual !== null && expected !== null + && typeof actual == 'object' && typeof expected == 'object' + && actual.toString() === expected.toString()) + return; + + var msg = message ? " (" + message + ")" : ""; + throw Error("assertion failed: got |" + actual + "|" + + ", expected |" + expected + "|" + msg); +} + +function assert_throws(expected_error, func, message) +{ + var err = false; + var msg = message ? " (" + message + ")" : ""; + try { + switch (typeof func) { + case 'string': + eval(func); + break; + case 'function': + func(); + break; + } + } catch(e) { + err = true; + if (!(e instanceof expected_error)) { + throw Error(`expected ${expected_error.name}, got ${e.name}${msg}`); + } + } + if (!err) { + throw Error(`expected ${expected_error.name}${msg}`); + } +} + +/*----------------*/ + +function test_op1() +{ + var r, a; + r = 1 + 2; + assert(r, 3, "1 + 2 === 3"); + + r = 1 - 2; + assert(r, -1, "1 - 2 === -1"); + + r = -1; + assert(r, -1, "-1 === -1"); + + r = +2; + assert(r, 2, "+2 === 2"); + + r = 2 * 3; + assert(r, 6, "2 * 3 === 6"); + + r = 4 / 2; + assert(r, 2, "4 / 2 === 2"); + + r = 4 % 3; + assert(r, 1, "4 % 3 === 3"); + + r = 4 << 2; + assert(r, 16, "4 << 2 === 16"); + + r = 1 << 0; + assert(r, 1, "1 << 0 === 1"); + + r = 1 << 31; + assert(r, -2147483648, "1 << 31 === -2147483648"); + + r = 1 << 32; + assert(r, 1, "1 << 32 === 1"); + + r = (1 << 31) < 0; + assert(r, true, "(1 << 31) < 0 === true"); + + r = -4 >> 1; + assert(r, -2, "-4 >> 1 === -2"); + + r = -4 >>> 1; + assert(r, 0x7ffffffe, "-4 >>> 1 === 0x7ffffffe"); + + r = 1 & 1; + assert(r, 1, "1 & 1 === 1"); + + r = 0 | 1; + assert(r, 1, "0 | 1 === 1"); + + r = 1 ^ 1; + assert(r, 0, "1 ^ 1 === 0"); + + r = ~1; + assert(r, -2, "~1 === -2"); + + r = !1; + assert(r, false, "!1 === false"); + + assert((1 < 2), true, "(1 < 2) === true"); + + assert((2 > 1), true, "(2 > 1) === true"); + + assert(('b' > 'a'), true, "('b' > 'a') === true"); + + assert(2 ** 8, 256, "2 ** 8 === 256"); +} + +function test_cvt() +{ + assert((NaN | 0), 0); + assert((Infinity | 0), 0); + assert(((-Infinity) | 0), 0); + assert(("12345" | 0), 12345); + assert(("0x12345" | 0), 0x12345); + assert(((4294967296 * 3 - 4) | 0), -4); + + assert(("12345" >>> 0), 12345); + assert(("0x12345" >>> 0), 0x12345); + assert((NaN >>> 0), 0); + assert((Infinity >>> 0), 0); + assert(((-Infinity) >>> 0), 0); + assert(((4294967296 * 3 - 4) >>> 0), (4294967296 - 4)); + assert((19686109595169230000).toString(), "19686109595169230000"); +} + +function test_eq() +{ + assert(null == undefined); + assert(undefined == null); + assert(true == 1); + assert(0 == false); + assert("" == 0); + assert("123" == 123); + assert("122" != 123); + assert((new Number(1)) == 1); + assert(2 == (new Number(2))); + assert((new String("abc")) == "abc"); + assert({} != "abc"); +} + +function test_inc_dec() +{ + var a, r; + + a = 1; + r = a++; + assert(r === 1 && a === 2, true, "++"); + + a = 1; + r = ++a; + assert(r === 2 && a === 2, true, "++"); + + a = 1; + r = a--; + assert(r === 1 && a === 0, true, "--"); + + a = 1; + r = --a; + assert(r === 0 && a === 0, true, "--"); + + a = {x:true}; + a.x++; + assert(a.x, 2, "++"); + + a = {x:true}; + a.x--; + assert(a.x, 0, "--"); + + a = [true]; + a[0]++; + assert(a[0], 2, "++"); + + a = {x:true}; + r = a.x++; + assert(r === 1 && a.x === 2, true, "++"); + + a = {x:true}; + r = a.x--; + assert(r === 1 && a.x === 0, true, "--"); + + a = [true]; + r = a[0]++; + assert(r === 1 && a[0] === 2, true, "++"); + + a = [true]; + r = a[0]--; + assert(r === 1 && a[0] === 0, true, "--"); +} + +function F(x) +{ + this.x = x; +} + +function test_op2() +{ + var a, b; + a = new Object; + a.x = 1; + assert(a.x, 1, "new"); + b = new F(2); + assert(b.x, 2, "new"); + + a = {x : 2}; + assert(("x" in a), true, "in"); + assert(("y" in a), false, "in"); + + a = {}; + assert((a instanceof Object), true, "instanceof"); + assert((a instanceof String), false, "instanceof"); + + assert((typeof 1), "number", "typeof"); + assert((typeof Object), "function", "typeof"); + assert((typeof null), "object", "typeof"); + assert((typeof unknown_var), "undefined", "typeof"); + + a = {x: 1, if: 2, async: 3}; + assert(a.if === 2); + assert(a.async === 3); +} + +function test_delete() +{ + var a, err; + + a = {x: 1, y: 1}; + assert((delete a.x), true, "delete"); + assert(("x" in a), false, "delete"); + + /* the following are not tested by test262 */ + assert(delete "abc"[100], true); + + err = false; + try { + delete null.a; + } catch(e) { + err = (e instanceof TypeError); + } + assert(err, true, "delete"); + + err = false; + try { + a = { f() { delete super.a; } }; + a.f(); + } catch(e) { + err = (e instanceof ReferenceError); + } + assert(err, true, "delete"); +} + +function test_constructor() +{ + function *G() {} + let ex + try { new G() } catch (ex_) { ex = ex_ } + assert(ex instanceof TypeError) + assert(ex.message, "G is not a constructor") +} + +function test_prototype() +{ + var f = function f() { }; + assert(f.prototype.constructor, f, "prototype"); + + var g = function g() { }; + /* QuickJS bug */ + Object.defineProperty(g, "prototype", { writable: false }); + assert(g.prototype.constructor, g, "prototype"); +} + +function test_arguments() +{ + function f2() { + assert(arguments.length, 2, "arguments"); + assert(arguments[0], 1, "arguments"); + assert(arguments[1], 3, "arguments"); + } + f2(1, 3); + + /* mapped arguments with GC must not crash (non-detached var_refs) */ + function f3(a) { + arguments; + gc(); + } + f3(0); +} + +function test_class() +{ + var o; + class C { + constructor() { + this.x = 10; + } + f() { + return 1; + } + static F() { + return -1; + } + get y() { + return 12; + } + }; + class D extends C { + constructor() { + super(); + this.z = 20; + } + g() { + return 2; + } + static G() { + return -2; + } + h() { + return super.f(); + } + static H() { + return super["F"](); + } + } + + assert(C.F(), -1); + assert(Object.getOwnPropertyDescriptor(C.prototype, "y").get.name === "get y"); + + o = new C(); + assert(o.f(), 1); + assert(o.x, 10); + + assert(D.F(), -1); + assert(D.G(), -2); + assert(D.H(), -1); + + o = new D(); + assert(o.f(), 1); + assert(o.g(), 2); + assert(o.x, 10); + assert(o.z, 20); + assert(o.h(), 1); + + /* test class name scope */ + var E1 = class E { static F() { return E; } }; + assert(E1, E1.F()); + + class S { + static x = 42; + static y = S.x; + static z = this.x; + } + assert(S.x, 42); + assert(S.y, 42); + assert(S.z, 42); + + class P { + get; + set; + async; + get = () => "123"; + set = () => "456"; + async = () => "789"; + static() { return 42; } + } + assert(new P().get(), "123"); + assert(new P().set(), "456"); + assert(new P().async(), "789"); + assert(new P().static(), 42); + + /* test that division after private field in parens is not parsed as regex */ + class Q { + #x = 10; + f() { return (this.#x / 2); } + } + assert(new Q().f(), 5); +}; + +function test_template() +{ + var a, b; + b = 123; + a = `abc${b}d`; + assert(a, "abc123d"); + + a = String.raw `abc${b}d`; + assert(a, "abc123d"); + + a = "aaa"; + b = "bbb"; + assert(`aaa${a, b}ccc`, "aaabbbccc"); +} + +function test_template_skip() +{ + var a = "Bar"; + var { b = `${a + `a${a}` }baz` } = {}; + assert(b, "BaraBarbaz"); +} + +function test_object_literal() +{ + var x = 0, get = 1, set = 2; async = 3; + a = { get: 2, set: 3, async: 4, get a(){ return this.get} }; + assert(JSON.stringify(a), '{"get":2,"set":3,"async":4,"a":2}'); + assert(a.a, 2); + + a = { x, get, set, async }; + assert(JSON.stringify(a), '{"x":0,"get":1,"set":2,"async":3}'); +} + +function test_regexp_skip() +{ + var a, b; + [a, b = /abc\(/] = [1]; + assert(a, 1); + + [a, b =/abc\(/] = [2]; + assert(a, 2); +} + +function test_labels() +{ + do x: { break x; } while(0); + if (1) + x: { break x; } + else + x: { break x; } + with ({}) x: { break x; }; + while (0) x: { break x; }; +} + +function test_destructuring() +{ + function * g () { return 0; }; + var [x] = g(); + assert(x, void 0); +} + +function test_spread() +{ + var x; + x = [1, 2, ...[3, 4]]; + assert(x.toString(), "1,2,3,4"); + + x = [ ...[ , ] ]; + assert(Object.getOwnPropertyNames(x).toString(), "0,length"); +} + +function test_function_length() +{ + assert( ((a, b = 1, c) => {}).length, 1); + assert( (([a,b]) => {}).length, 1); + assert( (({a,b}) => {}).length, 1); + assert( ((c, [a,b] = 1, d) => {}).length, 1); +} + +function test_argument_scope() +{ + var f; + var c = "global"; + + f = function(a = eval("var arguments")) {}; + // for some reason v8 does not throw an exception here + if (typeof require === 'undefined') + assert_throws(SyntaxError, f); + + f = function(a = eval("1"), b = arguments[0]) { return b; }; + assert(f(12), 12); + + f = function(a, b = arguments[0]) { return b; }; + assert(f(12), 12); + + f = function(a, b = () => arguments) { return b; }; + assert(f(12)()[0], 12); + + f = function(a = eval("1"), b = () => arguments) { return b; }; + assert(f(12)()[0], 12); + + (function() { + "use strict"; + f = function(a = this) { return a; }; + assert(f.call(123), 123); + + f = function f(a = f) { return a; }; + assert(f(), f); + + f = function f(a = eval("f")) { return a; }; + assert(f(), f); + })(); + + f = (a = eval("var c = 1"), probe = () => c) => { + var c = 2; + assert(c, 2); + assert(probe(), 1); + } + f(); + + f = (a = eval("var arguments = 1"), probe = () => arguments) => { + var arguments = 2; + assert(arguments, 2); + assert(probe(), 1); + } + f(); + + f = function f(a = eval("var c = 1"), b = c, probe = () => c) { + assert(b, 1); + assert(c, 1); + assert(probe(), 1) + } + f(); + + assert(c, "global"); + f = function f(a, b = c, probe = () => c) { + eval("var c = 1"); + assert(c, 1); + assert(b, "global"); + assert(probe(), "global") + } + f(); + assert(c, "global"); + + f = function f(a = eval("var c = 1"), probe = (d = eval("c")) => d) { + assert(probe(), 1) + } + f(); +} + +function test_function_expr_name() +{ + var f; + + /* non strict mode test : assignment to the function name silently + fails */ + + f = function myfunc() { + myfunc = 1; + return myfunc; + }; + assert(f(), f); + + f = function myfunc() { + myfunc = 1; + (() => { + myfunc = 1; + })(); + return myfunc; + }; + assert(f(), f); + + f = function myfunc() { + eval("myfunc = 1"); + return myfunc; + }; + assert(f(), f); + + /* strict mode test : assignment to the function name raises a + TypeError exception */ + + f = function myfunc() { + "use strict"; + myfunc = 1; + }; + assert_throws(TypeError, f); + + f = function myfunc() { + "use strict"; + (() => { + myfunc = 1; + })(); + }; + assert_throws(TypeError, f); + + f = function myfunc() { + "use strict"; + eval("myfunc = 1"); + }; + assert_throws(TypeError, f); +} + +function test_expr(expr, err) { + if (err) + assert_throws(err, expr, `for ${expr}`); + else + assert(1, eval(expr), `for ${expr}`); +} + +function test_name(name, err) +{ + test_expr(`(function() { return typeof ${name} ? 1 : 1; })()`); + test_expr(`(function() { var ${name}; ${name} = 1; return ${name}; })()`); + test_expr(`(function() { let ${name}; ${name} = 1; return ${name}; })()`, name == 'let' ? SyntaxError : undefined); + test_expr(`(function() { const ${name} = 1; return ${name}; })()`, name == 'let' ? SyntaxError : undefined); + test_expr(`(function(${name}) { ${name} = 1; return ${name}; })()`); + test_expr(`(function({${name}}) { ${name} = 1; return ${name}; })({})`); + test_expr(`(function ${name}() { return ${name} ? 1 : 0; })()`); + test_expr(`"use strict"; (function() { return typeof ${name} ? 1 : 1; })()`, err); + test_expr(`"use strict"; (function() { if (0) ${name} = 1; return 1; })()`, err); + test_expr(`"use strict"; (function() { var x; if (0) x = ${name}; return 1; })()`, err); + test_expr(`"use strict"; (function() { var ${name}; return 1; })()`, err); + test_expr(`"use strict"; (function() { let ${name}; return 1; })()`, err); + test_expr(`"use strict"; (function() { const ${name} = 1; return 1; })()`, err); + test_expr(`"use strict"; (function() { var ${name}; ${name} = 1; return 1; })()`, err); + test_expr(`"use strict"; (function() { var ${name}; ${name} = 1; return ${name}; })()`, err); + test_expr(`"use strict"; (function(${name}) { return 1; })()`, err); + test_expr(`"use strict"; (function({${name}}) { return 1; })({})`, err); + test_expr(`"use strict"; (function ${name}() { return 1; })()`, err); + test_expr(`(function() { "use strict"; return typeof ${name} ? 1 : 1; })()`, err); + test_expr(`(function() { "use strict"; if (0) ${name} = 1; return 1; })()`, err); + test_expr(`(function() { "use strict"; var x; if (0) x = ${name}; return 1; })()`, err); + test_expr(`(function() { "use strict"; var ${name}; return 1; })()`, err); + test_expr(`(function() { "use strict"; let ${name}; return 1; })()`, err); + test_expr(`(function() { "use strict"; const ${name} = 1; return 1; })()`, err); + test_expr(`(function() { "use strict"; var ${name}; ${name} = 1; return 1; })()`, err); + test_expr(`(function() { "use strict"; var ${name}; ${name} = 1; return ${name}; })()`, err); + test_expr(`(function(${name}) { "use strict"; return 1; })()`, err); + test_expr(`(function({${name}}) { "use strict"; return 1; })({})`, SyntaxError); + test_expr(`(function ${name}() { "use strict"; return 1; })()`, err); +} + +function test_reserved_names() +{ + test_name('await'); + test_name('yield', SyntaxError); + test_name('implements', SyntaxError); + test_name('interface', SyntaxError); + test_name('let', SyntaxError); + test_name('package', SyntaxError); + test_name('private', SyntaxError); + test_name('protected', SyntaxError); + test_name('public', SyntaxError); + test_name('static', SyntaxError); +} + +function test_number_literals() +{ + assert(0.1.a, undefined); + assert(0x1.a, undefined); + assert(0b1.a, undefined); + assert(01.a, undefined); + assert(0o1.a, undefined); + test_expr('0.a', SyntaxError); + assert(parseInt("0_1"), 0); + assert(parseInt("1_0"), 1); + assert(parseInt("0_1", 8), 0); + assert(parseInt("1_0", 8), 1); + assert(parseFloat("0_1"), 0); + assert(parseFloat("1_0"), 1); + assert(1_0, 10); + assert(parseInt("Infinity"), NaN); + assert(parseFloat("Infinity"), Infinity); + assert(parseFloat("Infinity1"), Infinity); + assert(parseFloat("Infinity_"), Infinity); + assert(parseFloat("Infinity."), Infinity); + test_expr('0_0', SyntaxError); + test_expr('00_0', SyntaxError); + test_expr('01_0', SyntaxError); + test_expr('08_0', SyntaxError); + test_expr('09_0', SyntaxError); +} + +function test_syntax() +{ + assert_throws(SyntaxError, "do"); + assert_throws(SyntaxError, "do;"); + assert_throws(SyntaxError, "do{}"); + assert_throws(SyntaxError, "if"); + assert_throws(SyntaxError, "if\n"); + assert_throws(SyntaxError, "if 1"); + assert_throws(SyntaxError, "if \0"); + assert_throws(SyntaxError, "if ;"); + assert_throws(SyntaxError, "if 'abc'"); + assert_throws(SyntaxError, "if `abc`"); + assert_throws(SyntaxError, "if /abc/"); + assert_throws(SyntaxError, "if abc"); + assert_throws(SyntaxError, "if abc\u0064"); + assert_throws(SyntaxError, "if abc\\u0064"); + assert_throws(SyntaxError, "if \u0123"); + assert_throws(SyntaxError, "if \\u0123"); +} + +/* optional chaining tests not present in test262 */ +function test_optional_chaining() +{ + var a, z; + z = null; + a = { b: { c: 2 } }; + assert(delete z?.b.c, true); + assert(delete a?.b.c, true); + assert(JSON.stringify(a), '{"b":{}}', "optional chaining delete"); + + a = { b: { c: 2 } }; + assert(delete z?.b["c"], true); + assert(delete a?.b["c"], true); + assert(JSON.stringify(a), '{"b":{}}'); + + a = { + b() { return this._b; }, + _b: { c: 42 } + }; + + assert((a?.b)().c, 42); + + assert((a?.["b"])().c, 42); +} + +function test_parse_semicolon() +{ + /* 'yield' or 'await' may not be considered as a token if the + previous ';' is missing */ + function *f() + { + function func() { + } + yield 1; + var h = x => x + 1 + yield 2; + } + async function g() + { + function func() { + } + await 1; + var h = x => x + 1 + await 2; + } +} + +test_op1(); +test_cvt(); +test_eq(); +test_inc_dec(); +test_op2(); +test_delete(); +test_constructor(); +test_prototype(); +test_arguments(); +test_class(); +test_template(); +test_template_skip(); +test_object_literal(); +test_regexp_skip(); +test_labels(); +test_destructuring(); +test_spread(); +test_function_length(); +test_argument_scope(); +test_function_expr_name(); +test_reserved_names(); +test_number_literals(); +test_syntax(); +test_optional_chaining(); +test_parse_semicolon(); diff --git a/test/web_apis/beam_buffer_test.exs b/test/web_apis/beam_buffer_test.exs new file mode 100644 index 000000000..cf300adae --- /dev/null +++ b/test/web_apis/beam_buffer_test.exs @@ -0,0 +1,605 @@ +defmodule QuickBEAM.WebAPIs.BeamBufferTest do + use ExUnit.Case, async: true + @moduletag :beam_web_apis + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + %{rt: rt} + end + + describe "Buffer.from" do + test "from utf8 string", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('hello').toString()") + assert result == "hello" + end + + test "from utf8 with multi-byte", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('привет').toString()") + assert result == "привет" + end + + test "from hex string", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('48656c6c6f', 'hex').toString()") + assert result == "Hello" + end + + test "from base64 string", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('SGVsbG8=', 'base64').toString()") + assert result == "Hello" + end + + test "from base64url string", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('SGVsbG8', 'base64url').toString()") + assert result == "Hello" + end + + test "from latin1 string", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('café', 'latin1').length") + assert result == 4 + end + + test "from ascii string", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('hello', 'ascii').toString('ascii')") + assert result == "hello" + end + + test "from array", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from([72, 101, 108, 108, 111]).toString()") + assert result == "Hello" + end + + test "from Uint8Array", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, "Buffer.from(new Uint8Array([72, 101, 108, 108, 111])).toString()") + + assert result == "Hello" + end + + test "from ArrayBuffer", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const ab = new Uint8Array([72, 101, 108, 108, 111]).buffer; + Buffer.from(ab).toString() + """) + + assert result == "Hello" + end + + test "from ArrayBuffer with offset and length", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const ab = new Uint8Array([0, 72, 101, 108, 108, 111, 0]).buffer; + Buffer.from(ab, 1, 5).toString() + """) + + assert result == "Hello" + end + + test "from JSON object", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval( + rt, + "Buffer.from({type: 'Buffer', data: [72, 101, 108, 108, 111]}).toString()" + ) + + assert result == "Hello" + end + end + + describe "Buffer.toString" do + test "to hex", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('Hello').toString('hex')") + assert result == "48656c6c6f" + end + + test "to base64", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('Hello').toString('base64')") + assert result == "SGVsbG8=" + end + + test "to base64url", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('Hello').toString('base64url')") + assert result == "SGVsbG8" + end + + test "to latin1", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from([0xc0, 0xff, 0xe9]).toString('latin1')") + assert result == "Àÿé" + end + + test "with start and end", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('Hello World').toString('utf8', 0, 5)") + assert result == "Hello" + end + + test "default is utf8", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('hello').toString()") + assert result == "hello" + end + end + + describe "Buffer.alloc" do + test "zero-filled", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.alloc(5).every(b => b === 0)") + assert result == true + end + + test "with fill byte", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.alloc(3, 0x42).toString()") + assert result == "BBB" + end + + test "with fill string", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.alloc(5, 'ab').toString()") + assert result == "ababa" + end + end + + describe "Buffer.concat" do + test "concatenates buffers", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const a = Buffer.from('Hello'); + const b = Buffer.from(' '); + const c = Buffer.from('World'); + Buffer.concat([a, b, c]).toString() + """) + + assert result == "Hello World" + end + + test "with totalLength truncation", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + Buffer.concat([Buffer.from('Hello'), Buffer.from(' World')], 5).toString() + """) + + assert result == "Hello" + end + end + + describe "Buffer.compare" do + test "equal buffers", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.compare(Buffer.from('abc'), Buffer.from('abc'))") + assert result == 0 + end + + test "less than", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.compare(Buffer.from('abc'), Buffer.from('abd'))") + assert result == -1 + end + + test "greater than", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.compare(Buffer.from('abd'), Buffer.from('abc'))") + assert result == 1 + end + end + + describe "Buffer.isBuffer" do + test "true for Buffer", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.isBuffer(Buffer.from('hello'))") + assert result == true + end + + test "false for Uint8Array", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.isBuffer(new Uint8Array(5))") + assert result == false + end + + test "false for string", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.isBuffer('hello')") + assert result == false + end + end + + describe "Buffer.isEncoding" do + test "known encodings", %{rt: rt} do + for enc <- ~w[utf8 utf-8 ascii latin1 binary base64 base64url hex ucs2 utf16le] do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.isEncoding('#{enc}')") + assert result == true, "expected #{enc} to be a valid encoding" + end + end + + test "unknown encoding", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.isEncoding('nope')") + assert result == false + end + end + + describe "Buffer.byteLength" do + test "utf8", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.byteLength('привет')") + assert result == 12 + end + + test "hex", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.byteLength('48656c6c6f', 'hex')") + assert result == 5 + end + + test "base64", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.byteLength('SGVsbG8=', 'base64')") + assert result == 5 + end + end + + describe "read/write integers" do + test "UInt8", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(1); + buf.writeUInt8(255); + buf.readUInt8() + """) + + assert result == 255 + end + + test "UInt16BE", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(2); + buf.writeUInt16BE(0x1234); + buf.readUInt16BE() + """) + + assert result == 0x1234 + end + + test "UInt16LE", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(2); + buf.writeUInt16LE(0x1234); + buf.readUInt16LE() + """) + + assert result == 0x1234 + end + + test "UInt32BE", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(4); + buf.writeUInt32BE(0xDEADBEEF); + buf.readUInt32BE() + """) + + assert result == 0xDEADBEEF + end + + test "UInt32LE", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(4); + buf.writeUInt32LE(0xDEADBEEF); + buf.readUInt32LE() + """) + + assert result == 0xDEADBEEF + end + + test "Int8 negative", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(1); + buf.writeInt8(-42); + buf.readInt8() + """) + + assert result == -42 + end + + test "Int16BE negative", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(2); + buf.writeInt16BE(-1000); + buf.readInt16BE() + """) + + assert result == -1000 + end + + test "Int32LE negative", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(4); + buf.writeInt32LE(-123456); + buf.readInt32LE() + """) + + assert result == -123_456 + end + end + + describe "read/write floats" do + test "FloatBE", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(4); + buf.writeFloatBE(3.14); + Math.abs(buf.readFloatBE() - 3.14) < 0.001 + """) + + assert result == true + end + + test "DoubleBE", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(8); + buf.writeDoubleBE(3.141592653589793); + buf.readDoubleBE() + """) + + assert_in_delta result, 3.141592653589793, 1.0e-15 + end + + test "DoubleLE", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(8); + buf.writeDoubleLE(2.718281828); + buf.readDoubleLE() + """) + + assert_in_delta result, 2.718281828, 1.0e-9 + end + end + + describe "slice and subarray" do + test "slice returns Buffer", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.from('Hello World'); + const sliced = buf.slice(0, 5); + Buffer.isBuffer(sliced) && sliced.toString() === 'Hello' + """) + + assert result == true + end + + test "subarray returns Buffer", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.from('Hello World'); + const sub = buf.subarray(6); + Buffer.isBuffer(sub) && sub.toString() === 'World' + """) + + assert result == true + end + end + + describe "copy" do + test "copies bytes", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const src = Buffer.from('Hello'); + const dst = Buffer.alloc(5); + src.copy(dst); + dst.toString() + """) + + assert result == "Hello" + end + + test "partial copy", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const src = Buffer.from('Hello World'); + const dst = Buffer.alloc(5); + src.copy(dst, 0, 6, 11); + dst.toString() + """) + + assert result == "World" + end + end + + describe "write" do + test "writes string", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(5); + buf.write('Hello'); + buf.toString() + """) + + assert result == "Hello" + end + + test "writes with offset", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(11); + buf.write('Hello'); + buf.write(' World', 5); + buf.toString() + """) + + assert result == "Hello World" + end + + test "returns bytes written", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.alloc(3); + buf.write('Hello') + """) + + assert result == 3 + end + end + + describe "indexOf and includes" do + test "finds byte", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('hello').indexOf(0x6c)") + assert result == 2 + end + + test "finds string", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('hello world').indexOf('world')") + assert result == 6 + end + + test "returns -1 when not found", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('hello').indexOf('xyz')") + assert result == -1 + end + + test "includes", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('hello world').includes('world')") + assert result == true + end + + test "lastIndexOf", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('abcabc').lastIndexOf('abc')") + assert result == 3 + end + end + + describe "equals" do + test "equal buffers", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('abc').equals(Buffer.from('abc'))") + assert result == true + end + + test "unequal buffers", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('abc').equals(Buffer.from('xyz'))") + assert result == false + end + end + + describe "fill" do + test "fill with byte", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.alloc(3, 0x41).toString()") + assert result == "AAA" + end + + test "fill with string pattern", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.alloc(6, 'abc').toString()") + assert result == "abcabc" + end + end + + describe "swap" do + test "swap16", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.from([0x01, 0x02, 0x03, 0x04]); + buf.swap16(); + [buf[0], buf[1], buf[2], buf[3]] + """) + + assert result == [0x02, 0x01, 0x04, 0x03] + end + + test "swap32", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.from([0x01, 0x02, 0x03, 0x04]); + buf.swap32(); + [buf[0], buf[1], buf[2], buf[3]] + """) + + assert result == [0x04, 0x03, 0x02, 0x01] + end + + test "swap16 rejects odd length", %{rt: rt} do + {:error, _} = QuickBEAM.eval(rt, "Buffer.alloc(3).swap16()") + end + end + + describe "toJSON" do + test "returns type and data", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('Hi').toJSON()") + assert result == %{"type" => "Buffer", "data" => [72, 105]} + end + end + + describe "BEAM interop" do + test "Buffer round-trips as binary", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.from('Hello BEAM')") + assert result == "Hello BEAM" + end + + test "BEAM binary usable as Buffer.from input", %{rt: rt} do + QuickBEAM.eval(rt, "function processBuffer(b) { return Buffer.from(b).toString('hex') }") + {:ok, result} = QuickBEAM.call(rt, "processBuffer", [{:bytes, <<0xDE, 0xAD, 0xBE, 0xEF>>}]) + assert result == "deadbeef" + end + + test "hex encoding via BEAM", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.from([0xCA, 0xFE, 0xBA, 0xBE]); + buf.toString('hex') + """) + + assert result == "cafebabe" + end + + test "base64 round-trip via BEAM", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const encoded = Buffer.from('Hello BEAM!').toString('base64'); + Buffer.from(encoded, 'base64').toString() + """) + + assert result == "Hello BEAM!" + end + + test "utf16le encoding via BEAM", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const buf = Buffer.from('Hi', 'utf16le'); + buf.length + """) + + assert result == 4 + end + end + + describe "instance compare" do + test "compare method", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const a = Buffer.from('abc'); + const b = Buffer.from('abd'); + a.compare(b) + """) + + assert result == -1 + end + + test "compare with ranges", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const a = Buffer.from('xxabc'); + const b = Buffer.from('abc'); + a.compare(b, 0, 3, 2, 5) + """) + + assert result == 0 + end + end + + describe "allocUnsafe" do + test "returns buffer of correct size", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Buffer.allocUnsafe(10).length") + assert result == 10 + end + end +end diff --git a/test/web_apis/beam_compression_test.exs b/test/web_apis/beam_compression_test.exs new file mode 100644 index 000000000..2ae4eae63 --- /dev/null +++ b/test/web_apis/beam_compression_test.exs @@ -0,0 +1,94 @@ +defmodule QuickBEAM.WebAPIs.BeamCompressionTest do + use ExUnit.Case, async: true + @moduletag :beam_web_apis + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + {:ok, rt: rt} + end + + describe "compression.compress/decompress" do + test "gzip round-trip", %{rt: rt} do + assert {:ok, "Hello, World!"} = + QuickBEAM.eval(rt, """ + const data = new TextEncoder().encode('Hello, World!'); + const compressed = compression.compress('gzip', data); + const decompressed = compression.decompress('gzip', compressed); + new TextDecoder().decode(decompressed); + """) + end + + test "deflate round-trip", %{rt: rt} do + assert {:ok, "Hello, World!"} = + QuickBEAM.eval(rt, """ + const data = new TextEncoder().encode('Hello, World!'); + const compressed = compression.compress('deflate', data); + const decompressed = compression.decompress('deflate', compressed); + new TextDecoder().decode(decompressed); + """) + end + + test "deflate-raw round-trip", %{rt: rt} do + assert {:ok, "Hello, World!"} = + QuickBEAM.eval(rt, """ + const data = new TextEncoder().encode('Hello, World!'); + const compressed = compression.compress('deflate-raw', data); + const decompressed = compression.decompress('deflate-raw', compressed); + new TextDecoder().decode(decompressed); + """) + end + + test "gzip compresses data", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const input = 'A'.repeat(1000); + const data = new TextEncoder().encode(input); + const compressed = compression.compress('gzip', data); + compressed.length < data.length; + """) + end + + test "returns Uint8Array", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const compressed = compression.compress('gzip', new TextEncoder().encode('test')); + compressed instanceof Uint8Array; + """) + end + + test "string input accepted", %{rt: rt} do + assert {:ok, "hello"} = + QuickBEAM.eval(rt, """ + const compressed = compression.compress('gzip', 'hello'); + const decompressed = compression.decompress('gzip', compressed); + new TextDecoder().decode(decompressed); + """) + end + + test "empty input", %{rt: rt} do + assert {:ok, ""} = + QuickBEAM.eval(rt, """ + const compressed = compression.compress('gzip', new Uint8Array()); + const decompressed = compression.decompress('gzip', compressed); + new TextDecoder().decode(decompressed); + """) + end + + test "invalid format throws TypeError", %{rt: rt} do + assert {:error, _} = + QuickBEAM.eval(rt, "compression.compress('brotli', new Uint8Array([1]))") + end + + test "binary data round-trip", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const data = new Uint8Array(256); + for (let i = 0; i < 256; i++) data[i] = i; + const compressed = compression.compress('gzip', data); + const decompressed = compression.decompress('gzip', compressed); + decompressed.length === 256 && decompressed.every((b, i) => b === i); + """) + end + end +end diff --git a/test/web_apis/beam_console_ext_test.exs b/test/web_apis/beam_console_ext_test.exs new file mode 100644 index 000000000..f7cdd5e87 --- /dev/null +++ b/test/web_apis/beam_console_ext_test.exs @@ -0,0 +1,86 @@ +defmodule QuickBEAM.WebAPIs.BeamConsoleExtTest do + use ExUnit.Case, async: true + @moduletag :beam_web_apis + import ExUnit.CaptureLog + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + {:ok, rt: rt} + end + + test "console.debug routes to Logger info", %{rt: rt} do + log = + capture_log(fn -> + QuickBEAM.eval(rt, ~s[console.debug("debug msg")]) + Process.sleep(50) + end) + + assert log =~ "debug msg" + end + + test "console.assert does nothing on true", %{rt: rt} do + log = + capture_log([level: :error], fn -> + QuickBEAM.eval(rt, ~s[console.assert(true, "should not appear")]) + Process.sleep(50) + end) + + refute log =~ "should not appear" + end + + test "console.assert logs on false", %{rt: rt} do + log = + capture_log(fn -> + QuickBEAM.eval(rt, ~s[console.assert(false, "failed!")]) + Process.sleep(50) + end) + + assert log =~ "Assertion failed:" + assert log =~ "failed!" + end + + test "console.time and console.timeEnd", %{rt: rt} do + log = + capture_log(fn -> + QuickBEAM.eval(rt, """ + console.time("op"); + let s = 0; for (let i = 0; i < 1000; i++) s += i; + console.timeEnd("op"); + """) + + Process.sleep(50) + end) + + assert log =~ "op:" + assert log =~ "ms" + end + + test "console.count increments", %{rt: rt} do + log = + capture_log(fn -> + QuickBEAM.eval(rt, """ + console.count("hits"); + console.count("hits"); + console.count("hits"); + """) + + Process.sleep(50) + end) + + assert log =~ "hits: 1" + assert log =~ "hits: 2" + assert log =~ "hits: 3" + end + + test "console.dir serializes object", %{rt: rt} do + log = + capture_log(fn -> + QuickBEAM.eval(rt, ~s[console.dir({a: 1, b: 2})]) + Process.sleep(50) + end) + + assert log =~ "\"a\": 1" + assert log =~ "\"b\": 2" + end +end diff --git a/test/web_apis/beam_console_test.exs b/test/web_apis/beam_console_test.exs new file mode 100644 index 000000000..b44b84847 --- /dev/null +++ b/test/web_apis/beam_console_test.exs @@ -0,0 +1,57 @@ +defmodule QuickBEAM.WebAPIs.BeamConsoleTest do + use ExUnit.Case, async: true + @moduletag :beam_web_apis + import ExUnit.CaptureLog + + test "console.log routes to Logger" do + {:ok, rt} = QuickBEAM.start() + + log = + capture_log(fn -> + QuickBEAM.eval(rt, ~s[console.log("hello from JS")]) + Process.sleep(50) + end) + + assert log =~ "hello from JS" + QuickBEAM.stop(rt) + end + + test "console.warn routes to Logger warning" do + {:ok, rt} = QuickBEAM.start() + + log = + capture_log([level: :warning], fn -> + QuickBEAM.eval(rt, ~s[console.warn("JS warning")]) + Process.sleep(50) + end) + + assert log =~ "JS warning" + QuickBEAM.stop(rt) + end + + test "console.error routes to Logger error" do + {:ok, rt} = QuickBEAM.start() + + log = + capture_log([level: :error], fn -> + QuickBEAM.eval(rt, ~s[console.error("JS error")]) + Process.sleep(50) + end) + + assert log =~ "JS error" + QuickBEAM.stop(rt) + end + + test "console.log with multiple arguments" do + {:ok, rt} = QuickBEAM.start() + + log = + capture_log(fn -> + QuickBEAM.eval(rt, ~s[console.log("a", "b", "c")]) + Process.sleep(50) + end) + + assert log =~ "a b c" + QuickBEAM.stop(rt) + end +end diff --git a/test/web_apis/beam_event_source_test.exs b/test/web_apis/beam_event_source_test.exs new file mode 100644 index 000000000..3d2f2b9af --- /dev/null +++ b/test/web_apis/beam_event_source_test.exs @@ -0,0 +1,130 @@ +defmodule QuickBEAM.WebAPIs.BeamEventSourceTest do + use ExUnit.Case, async: false + use Plug.Router + + plug(:match) + plug(:dispatch) + + get "/sse" do + conn = + conn + |> put_resp_content_type("text/event-stream") + |> send_chunked(200) + + {:ok, conn} = chunk(conn, "data: hello\n\n") + {:ok, conn} = chunk(conn, "data: world\n\n") + {:ok, conn} = chunk(conn, "event: custom\ndata: payload\n\n") + conn + end + + get "/sse-with-id" do + conn = + conn + |> put_resp_content_type("text/event-stream") + |> send_chunked(200) + + {:ok, conn} = chunk(conn, "id: 42\ndata: identified\n\n") + conn + end + + setup_all do + {:ok, server} = Bandit.start_link(plug: __MODULE__, port: 0, ip: :loopback) + {:ok, {_addr, port}} = ThousandIsland.listener_info(server) + %{base_url: "http://127.0.0.1:#{port}"} + end + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + {:ok, rt: rt} + end + + test "receives SSE messages", %{rt: rt, base_url: base_url} do + assert {:ok, ["hello", "world"]} = + QuickBEAM.eval( + rt, + """ + await new Promise((resolve) => { + const messages = []; + const es = new EventSource("#{base_url}/sse"); + es.onmessage = (e) => { + messages.push(e.data); + if (messages.length === 2) { + es.close(); + resolve(messages); + } + }; + }) + """, + timeout: 5000 + ) + end + + test "receives custom event types", %{rt: rt, base_url: base_url} do + assert {:ok, "payload"} = + QuickBEAM.eval( + rt, + """ + await new Promise((resolve) => { + const es = new EventSource("#{base_url}/sse"); + es.addEventListener("custom", (e) => { + es.close(); + resolve(e.data); + }); + }) + """, + timeout: 5000 + ) + end + + test "lastEventId is set", %{rt: rt, base_url: base_url} do + assert {:ok, "42"} = + QuickBEAM.eval( + rt, + """ + await new Promise((resolve) => { + const es = new EventSource("#{base_url}/sse-with-id"); + es.onmessage = (e) => { + es.close(); + resolve(e.lastEventId); + }; + }) + """, + timeout: 5000 + ) + end + + test "readyState transitions", %{rt: rt, base_url: base_url} do + assert {:ok, states} = + QuickBEAM.eval( + rt, + """ + await new Promise((resolve) => { + const states = []; + const es = new EventSource("#{base_url}/sse"); + states.push(es.readyState); + es.onopen = () => states.push(es.readyState); + es.onmessage = () => { + states.push(es.readyState); + es.close(); + states.push(es.readyState); + resolve(states); + }; + }) + """, + timeout: 5000 + ) + + assert hd(states) == 0 + assert List.last(states) == 2 + end +end diff --git a/test/web_apis/beam_fetch_test.exs b/test/web_apis/beam_fetch_test.exs new file mode 100644 index 000000000..a62a7cb7a --- /dev/null +++ b/test/web_apis/beam_fetch_test.exs @@ -0,0 +1,354 @@ +defmodule QuickBEAM.WebAPIs.BeamFetchTest do + use ExUnit.Case, async: false + use Plug.Router + + @moduletag :fetch + + plug(Plug.Parsers, parsers: [:urlencoded], pass: ["*/*"]) + plug(:match) + plug(:dispatch) + + get "/hello" do + send_resp(conn, 200, "Hello!") + end + + get "/slow" do + Process.sleep(10_000) + send_resp(conn, 200, "finally!") + end + + get "/json" do + conn + |> put_resp_content_type("application/json") + |> send_resp(200, ~s|{"name":"beam","version":27}|) + end + + get "/not-found" do + send_resp(conn, 404, "Nope") + end + + get "/headers" do + conn + |> put_resp_header("x-custom", "hello") + |> send_resp(200, "ok") + end + + get "/bytes" do + conn + |> put_resp_content_type("application/octet-stream") + |> send_resp(200, <<0, 1, 2, 3>>) + end + + post "/echo" do + {:ok, body, conn} = Plug.Conn.read_body(conn) + ct = Plug.Conn.get_req_header(conn, "content-type") |> List.first("") + + json = ~s|{"method":"POST","body":#{inspect(body)},"content_type":#{inspect(ct)}}| + + conn + |> put_resp_content_type("application/json") + |> send_resp(200, json) + end + + put "/echo" do + {:ok, body, conn} = Plug.Conn.read_body(conn) + + conn + |> put_resp_content_type("application/json") + |> send_resp(200, ~s|{"method":"PUT","body":#{inspect(body)}}|) + end + + delete "/item/:id" do + send_resp(conn, 204, "") + end + + match _ do + send_resp(conn, 404, "not found") + end + + setup_all do + {:ok, server} = Bandit.start_link(plug: __MODULE__, port: 0, ip: :loopback) + {:ok, {_addr, port}} = ThousandIsland.listener_info(server) + %{base: "http://127.0.0.1:#{port}"} + end + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + %{rt: rt} + end + + describe "basic GET" do + test "returns status and body", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = await fetch("#{base}/hello"); + ({ status: r.status, ok: r.ok, body: await r.text() }) + """) + + assert result == %{"status" => 200, "ok" => true, "body" => "Hello!"} + end + + test "parses JSON response", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = await fetch("#{base}/json"); + await r.json() + """) + + assert result == %{"name" => "beam", "version" => 27} + end + + test "non-200 status", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = await fetch("#{base}/not-found"); + ({ status: r.status, ok: r.ok }) + """) + + assert result == %{"status" => 404, "ok" => false} + end + + test "response headers", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = await fetch("#{base}/headers"); + r.headers.get("x-custom") + """) + + assert result == "hello" + end + + test "response as bytes", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = await fetch("#{base}/bytes"); + Array.from(await r.bytes()) + """) + + assert result == [0, 1, 2, 3] + end + + test "response as arrayBuffer", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = await fetch("#{base}/bytes"); + (await r.arrayBuffer()).byteLength + """) + + assert result == 4 + end + end + + describe "request methods and body" do + test "POST with string body", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = await fetch("#{base}/echo", { + method: "POST", + body: "hello world" + }); + await r.json() + """) + + assert result["method"] == "POST" + assert result["body"] == "hello world" + assert result["content_type"] =~ "text/plain" + end + + test "POST with JSON body", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = await fetch("#{base}/echo", { + method: "POST", + headers: { "Content-Type": "application/json" }, + body: JSON.stringify({ key: "value" }) + }); + await r.json() + """) + + assert result["method"] == "POST" + assert result["body"] == ~s|{"key":"value"}| + assert result["content_type"] =~ "application/json" + end + + test "PUT method", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = await fetch("#{base}/echo", { method: "PUT", body: "data" }); + await r.json() + """) + + assert result["method"] == "PUT" + assert result["body"] == "data" + end + + test "DELETE method", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = await fetch("#{base}/item/42", { method: "DELETE" }); + r.status + """) + + assert result == 204 + end + end + + describe "Request and Response objects" do + test "Request constructor", %{rt: rt, base: base} do + {:ok, 200} = + QuickBEAM.eval(rt, """ + const req = new Request("#{base}/hello"); + (await fetch(req)).status + """) + end + + test "Request.clone()", %{rt: rt} do + {:ok, "POST"} = + QuickBEAM.eval(rt, """ + new Request("http://example.com", { method: "POST" }).clone().method + """) + end + + test "Response.json()", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = Response.json({ hello: "world" }); + ({ + status: r.status, + type: r.headers.get("content-type"), + body: await r.json() + }) + """) + + assert result["status"] == 200 + assert result["type"] == "application/json" + assert result["body"] == %{"hello" => "world"} + end + + test "Response.error()", %{rt: rt} do + {:ok, 0} = QuickBEAM.eval(rt, "Response.error().status") + end + + test "Response.redirect()", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = Response.redirect("http://example.com", 301); + ({ status: r.status, location: r.headers.get("location") }) + """) + + assert result == %{"status" => 301, "location" => "http://example.com"} + end + + test "body consumed once", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const r = Response.json({ a: 1 }); + await r.text(); + try { await r.text(); "no error" } catch(e) { e.message } + """) + + assert result =~ "consumed" + end + + test "clone preserves body", %{rt: rt} do + {:ok, true} = + QuickBEAM.eval(rt, """ + const r = Response.json({ a: 1 }); + const r2 = r.clone(); + (await r.text()) === (await r2.text()) + """) + end + end + + describe "error handling" do + test "connection refused" do + {:ok, rt} = QuickBEAM.start(mode: :beam) + + {:error, error} = + QuickBEAM.eval(rt, """ + await fetch("http://127.0.0.1:1/") + """) + + assert error.message =~ "fetch failed" + QuickBEAM.stop(rt) + end + end + + describe "abort" do + test "pre-aborted signal rejects immediately" do + {:ok, rt} = QuickBEAM.start(mode: :beam) + + {:error, error} = + QuickBEAM.eval(rt, """ + const controller = new AbortController(); + controller.abort(); + await fetch("http://127.0.0.1:1/", { signal: controller.signal }) + """) + + assert error.name == "AbortError" + QuickBEAM.stop(rt) + end + + test "AbortSignal.abort() rejects fetch" do + {:ok, rt} = QuickBEAM.start(mode: :beam) + + {:error, error} = + QuickBEAM.eval(rt, """ + await fetch("http://127.0.0.1:1/", { signal: AbortSignal.abort() }) + """) + + assert error.name == "AbortError" + QuickBEAM.stop(rt) + end + + test "abort during in-flight request cancels and rejects", %{base: base} do + {:ok, rt} = QuickBEAM.start(mode: :beam) + + {:error, error} = + QuickBEAM.eval(rt, """ + const controller = new AbortController(); + setTimeout(() => controller.abort(), 50); + await fetch("#{base}/slow", { signal: controller.signal }) + """) + + assert error.name == "AbortError" + QuickBEAM.stop(rt) + end + + test "AbortSignal.timeout() rejects slow request", %{base: base} do + {:ok, rt} = QuickBEAM.start(mode: :beam) + + {:error, error} = + QuickBEAM.eval(rt, """ + await fetch("#{base}/slow", { signal: AbortSignal.timeout(50) }) + """) + + assert error.name == "TimeoutError" + QuickBEAM.stop(rt) + end + + test "fetch succeeds when abort signal is not triggered", %{base: base} do + {:ok, rt} = QuickBEAM.start(mode: :beam) + + {:ok, result} = + QuickBEAM.eval(rt, """ + const controller = new AbortController(); + const r = await fetch("#{base}/hello", { signal: controller.signal }); + ({ status: r.status, body: await r.text() }) + """) + + assert result == %{"status" => 200, "body" => "Hello!"} + QuickBEAM.stop(rt) + end + end +end diff --git a/test/web_apis/beam_form_data_test.exs b/test/web_apis/beam_form_data_test.exs new file mode 100644 index 000000000..fc2846ce2 --- /dev/null +++ b/test/web_apis/beam_form_data_test.exs @@ -0,0 +1,526 @@ +defmodule QuickBEAM.WebAPIs.BeamFormDataTest do + @moduledoc "Merged from WPT: xhr/formdata + fetch integration tests" + use ExUnit.Case, async: false + use Plug.Router + + plug(:match) + plug(:dispatch) + + post "/echo" do + {:ok, body, conn} = Plug.Conn.read_body(conn) + ct = Plug.Conn.get_req_header(conn, "content-type") |> List.first("") + + conn + |> put_resp_content_type("text/plain") + |> send_resp(200, "CT: #{ct}\n---\n#{body}") + end + + match _ do + send_resp(conn, 404, "not found") + end + + setup_all do + {:ok, server} = Bandit.start_link(plug: __MODULE__, port: 0, ip: :loopback) + {:ok, {_addr, port}} = ThousandIsland.listener_info(server) + %{base: "http://127.0.0.1:#{port}"} + end + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + %{rt: rt} + end + + describe "FormData constructor" do + test "creates empty FormData", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.constructor.name === 'FormData' + """) + end + end + + describe "append and get" do + test "string value", %{rt: rt} do + {:ok, "bar"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("foo", "bar"); + fd.get("foo") + """) + end + + test "returns null for missing key", %{rt: rt} do + {:ok, nil} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.get("missing") + """) + end + + test "returns first value for duplicate keys", %{rt: rt} do + {:ok, "first"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("key", "first"); + fd.append("key", "second"); + fd.get("key") + """) + end + + test "append adds entry, get retrieves it", %{rt: rt} do + assert {:ok, "value"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("key", "value"); + fd.get("key") + """) + end + + test "get returns null for missing key", %{rt: rt} do + assert {:ok, nil} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.get("missing") + """) + end + + test "multiple append same key preserves all", %{rt: rt} do + assert {:ok, "first"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("key", "first"); + fd.append("key", "second"); + fd.get("key") + """) + end + + test "returns all values for key", %{rt: rt} do + {:ok, ["a", "b", "c"]} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("x", "a"); + fd.append("x", "b"); + fd.append("x", "c"); + fd.getAll("x") + """) + end + + test "returns empty array for missing key", %{rt: rt} do + {:ok, []} = + QuickBEAM.eval(rt, """ + new FormData().getAll("nope") + """) + end + + test "getAll returns all values for a key", %{rt: rt} do + assert {:ok, ["first", "second", "third"]} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("key", "first"); + fd.append("key", "second"); + fd.append("key", "third"); + fd.getAll("key") + """) + end + + test "getAll returns empty array for missing key", %{rt: rt} do + assert {:ok, []} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.getAll("missing") + """) + end + end + + describe "set" do + test "replaces existing entries", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("key", "old1"); + fd.append("key", "old2"); + fd.set("key", "new"); + fd.getAll("key") + """) + + assert result == ["new"] + end + + test "adds entry when key does not exist", %{rt: rt} do + {:ok, "val"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.set("key", "val"); + fd.get("key") + """) + end + + test "set replaces existing entries", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("key", "first"); + fd.append("key", "second"); + fd.set("key", "replaced"); + const all = fd.getAll("key"); + all.length === 1 && all[0] === "replaced" + """) + end + + test "set adds if key does not exist", %{rt: rt} do + assert {:ok, "new"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.set("key", "new"); + fd.get("key") + """) + end + end + + describe "delete" do + test "removes all entries with name", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("a", "1"); + fd.append("a", "2"); + fd.append("b", "3"); + fd.delete("a"); + ({ has: fd.has("a"), b: fd.get("b") }) + """) + + assert result == %{"has" => false, "b" => "3"} + end + + test "delete removes all entries with key", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("key", "a"); + fd.append("key", "b"); + fd.append("other", "c"); + fd.delete("key"); + fd.has("key") === false && fd.has("other") === true + """) + end + end + + describe "has" do + test "returns true when key exists", %{rt: rt} do + {:ok, true} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("key", "val"); + fd.has("key") + """) + end + + test "returns false when key missing", %{rt: rt} do + {:ok, false} = + QuickBEAM.eval(rt, """ + new FormData().has("key") + """) + end + + test "has returns true for existing key", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("key", "value"); + fd.has("key") + """) + end + + test "has returns false for missing key", %{rt: rt} do + assert {:ok, false} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.has("missing") + """) + end + end + + describe "Blob and File handling" do + test "appending Blob wraps in File with name 'blob'", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("file", new Blob(["data"], { type: "text/plain" })); + const f = fd.get("file"); + ({ isFile: f instanceof File, name: f.name, type: f.type, text: await f.text() }) + """) + + assert result == %{ + "isFile" => true, + "name" => "blob", + "type" => "text/plain", + "text" => "data" + } + end + + test "appending Blob with filename", %{rt: rt} do + {:ok, "custom.txt"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("file", new Blob(["x"]), "custom.txt"); + fd.get("file").name + """) + end + + test "appending File preserves name", %{rt: rt} do + {:ok, "test.txt"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("file", new File(["content"], "test.txt")); + fd.get("file").name + """) + end + + test "appending File with override filename", %{rt: rt} do + {:ok, "override.txt"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("file", new File(["content"], "original.txt"), "override.txt"); + fd.get("file").name + """) + end + + test "Blob value wrapped in File with name 'blob'", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("file", new Blob(["data"], { type: "text/plain" })); + const val = fd.get("file"); + val instanceof File && val.name === "blob" && val.type === "text/plain" + """) + end + + test "Blob value text content is preserved", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("file", new Blob(["data"], { type: "text/plain" })); + const f = fd.get("file"); + ({ isFile: f instanceof File, name: f.name, type: f.type, text: await f.text() }) + """) + + assert result == %{ + "isFile" => true, + "name" => "blob", + "type" => "text/plain", + "text" => "data" + } + end + + test "File values preserve original name", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("file", new File(["data"], "test.txt", { type: "text/plain" })); + const val = fd.get("file"); + val instanceof File && val.name === "test.txt" + """) + end + + test "custom filename overrides Blob default", %{rt: rt} do + assert {:ok, "custom.txt"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("file", new Blob(["data"]), "custom.txt"); + fd.get("file").name + """) + end + + test "custom filename overrides File name", %{rt: rt} do + assert {:ok, "override.txt"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("file", new File(["data"], "original.txt"), "override.txt"); + fd.get("file").name + """) + end + end + + describe "iteration" do + test "entries", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("a", "1"); + fd.append("b", "2"); + [...fd.entries()].map(([k, v]) => k + "=" + v) + """) + + assert result == ["a=1", "b=2"] + end + + test "keys", %{rt: rt} do + {:ok, ["a", "b"]} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("a", "1"); + fd.append("b", "2"); + [...fd.keys()] + """) + end + + test "values", %{rt: rt} do + {:ok, ["1", "2"]} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("a", "1"); + fd.append("b", "2"); + [...fd.values()] + """) + end + + test "Symbol.iterator", %{rt: rt} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("x", "y"); + [...fd].map(([k, v]) => k + ":" + v) + """) + + assert result == ["x:y"] + end + + test "forEach", %{rt: rt} do + {:ok, ["a=1", "b=2"]} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("a", "1"); + fd.append("b", "2"); + const items = []; + fd.forEach((v, k) => items.push(k + "=" + v)); + items + """) + end + + test "forEach works correctly", %{rt: rt} do + assert {:ok, "a=1,b=2,c=3"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("a", "1"); + fd.append("b", "2"); + fd.append("c", "3"); + const pairs = []; + fd.forEach((value, name) => pairs.push(name + "=" + value)); + pairs.join(",") + """) + end + + test "iteration order matches insertion order", %{rt: rt} do + assert {:ok, "first,second,third"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("first", "1"); + fd.append("second", "2"); + fd.append("third", "3"); + const keys = []; + for (const [key] of fd) keys.push(key); + keys.join(",") + """) + end + + test "keys iterator", %{rt: rt} do + assert {:ok, "a,b,c"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("a", "1"); + fd.append("b", "2"); + fd.append("c", "3"); + [...fd.keys()].join(",") + """) + end + + test "values iterator", %{rt: rt} do + assert {:ok, "1,2,3"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("a", "1"); + fd.append("b", "2"); + fd.append("c", "3"); + [...fd.values()].join(",") + """) + end + + test "entries iterator", %{rt: rt} do + assert {:ok, "a:1,b:2"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("a", "1"); + fd.append("b", "2"); + const pairs = []; + for (const [k, v] of fd.entries()) pairs.push(k + ":" + v); + pairs.join(",") + """) + end + + test "Symbol.iterator works", %{rt: rt} do + assert {:ok, "x:10,y:20"} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("x", "10"); + fd.append("y", "20"); + const pairs = []; + for (const [k, v] of fd) pairs.push(k + ":" + v); + pairs.join(",") + """) + end + end + + describe "fetch integration" do + test "FormData body sets multipart content type", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("field", "value"); + const r = await fetch("#{base}/echo", { method: "POST", body: fd }); + const text = await r.text(); + text.split("\\n")[0] + """) + + assert result =~ "multipart/form-data; boundary=" + end + + test "FormData body encodes string entries", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("name", "alice"); + fd.append("age", "30"); + const r = await fetch("#{base}/echo", { method: "POST", body: fd }); + const text = await r.text(); + text.includes('name="name"') && text.includes("alice") && + text.includes('name="age"') && text.includes("30") + """) + + assert result == true + end + + test "FormData body encodes file entries", %{rt: rt, base: base} do + {:ok, result} = + QuickBEAM.eval(rt, """ + const fd = new FormData(); + fd.append("doc", new File(["hello"], "doc.txt", { type: "text/plain" })); + const r = await fetch("#{base}/echo", { method: "POST", body: fd }); + const text = await r.text(); + text.includes('filename="doc.txt"') && text.includes("Content-Type: text/plain") && text.includes("hello") + """) + + assert result == true + end + end +end diff --git a/test/web_apis/beam_locks_test.exs b/test/web_apis/beam_locks_test.exs new file mode 100644 index 000000000..6ce7321ba --- /dev/null +++ b/test/web_apis/beam_locks_test.exs @@ -0,0 +1,131 @@ +defmodule QuickBEAM.WebAPIs.BeamLocksTest do + use ExUnit.Case, async: false + + setup_all do + unless Process.whereis(QuickBEAM.LockManager) do + QuickBEAM.LockManager.start_link([]) + end + + :ok + end + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + {:ok, rt: rt} + end + + describe "navigator.locks.request" do + test "exclusive lock runs callback and returns result", %{rt: rt} do + assert {:ok, "locked!"} = + QuickBEAM.eval(rt, """ + await navigator.locks.request("test1", async (lock) => { + return "locked!"; + }) + """) + end + + test "lock object has name and mode", %{rt: rt} do + assert {:ok, %{"name" => "res1", "mode" => "exclusive"}} = + QuickBEAM.eval(rt, """ + await navigator.locks.request("res1", async (lock) => { + return { name: lock.name, mode: lock.mode }; + }) + """) + end + + test "shared mode lock", %{rt: rt} do + assert {:ok, "shared"} = + QuickBEAM.eval(rt, """ + await navigator.locks.request("res2", { mode: "shared" }, async (lock) => { + return lock.mode; + }) + """) + end + + test "ifAvailable returns null when lock is held", %{rt: rt} do + assert {:ok, "got null"} = + QuickBEAM.eval(rt, """ + await navigator.locks.request("busy", async (lock) => { + const inner = await navigator.locks.request("busy", { ifAvailable: true }, async (lock2) => { + return lock2 === null ? "got null" : "got lock"; + }); + return inner; + }) + """) + end + + test "lock is released after callback completes", %{rt: rt} do + assert {:ok, "second"} = + QuickBEAM.eval(rt, """ + await navigator.locks.request("rel", async () => "first"); + await navigator.locks.request("rel", async () => "second"); + """) + end + end + + describe "navigator.locks.query" do + test "shows held locks", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + await navigator.locks.request("querytest", async (lock) => { + const state = await navigator.locks.query(); + return state.held.some(l => l.name === "querytest" && l.mode === "exclusive"); + }) + """) + end + + test "empty when no locks held", %{rt: rt} do + assert {:ok, 0} = + QuickBEAM.eval(rt, """ + const state = await navigator.locks.query(); + state.held.length + """) + end + end + + describe "cross-runtime locking" do + @tag :skip # Requires cross-runtime GenServer locking — not available in single-process BEAM mode + test "exclusive lock blocks second runtime", context do + {:ok, rt2} = QuickBEAM.start() + + on_exit(fn -> + try do + QuickBEAM.stop(rt2) + catch + :exit, _ -> :ok + end + end) + + rt1 = context.rt + + # rt1 grabs lock, rt2 tries ifAvailable and fails + {:ok, _} = + QuickBEAM.eval(rt1, """ + globalThis.lockPromise = navigator.locks.request("shared_res", async (lock) => { + await new Promise(r => setTimeout(r, 500)); + return "done"; + }); + "holding" + """) + + Process.sleep(50) + + assert {:ok, "not_available"} = + QuickBEAM.eval(rt2, """ + await navigator.locks.request("shared_res", { ifAvailable: true }, async (lock) => { + return lock === null ? "not_available" : "available"; + }) + """) + end + end +end diff --git a/test/web_apis/beam_message_channel_test.exs b/test/web_apis/beam_message_channel_test.exs new file mode 100644 index 000000000..fd7bd69c3 --- /dev/null +++ b/test/web_apis/beam_message_channel_test.exs @@ -0,0 +1,374 @@ +defmodule QuickBEAM.WebAPIs.BeamMessageChannelTest do + @moduledoc "Merged from WPT: webmessaging/message-channels + additional coverage" + use ExUnit.Case, async: true + @moduletag :beam_web_apis + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + %{rt: rt} + end + + describe "MessageChannel" do + test "port1 and port2 exist", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + ch.port1 instanceof MessagePort && ch.port2 instanceof MessagePort; + """) + end + + test "basic message passing via onmessage", %{rt: rt} do + assert {:ok, "hello"} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + let received; + ch.port2.onmessage = (e) => { received = e.data; }; + ch.port1.postMessage('hello'); + await new Promise(resolve => queueMicrotask(resolve)); + received; + """) + end + + test "bidirectional communication", %{rt: rt} do + assert {:ok, ["from1", "from2"]} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + const results = []; + ch.port1.onmessage = (e) => { results.push(e.data); }; + ch.port2.onmessage = (e) => { results.push(e.data); }; + ch.port1.postMessage('from1'); + ch.port2.postMessage('from2'); + await new Promise(resolve => queueMicrotask(resolve)); + results; + """) + end + + test "close prevents further messages", %{rt: rt} do + assert {:ok, 0} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + let count = 0; + ch.port2.onmessage = () => { count++; }; + ch.port2.close(); + ch.port1.postMessage('ignored'); + await new Promise(resolve => queueMicrotask(resolve)); + count; + """) + end + + test "close on sender side prevents messages", %{rt: rt} do + assert {:ok, 0} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + let count = 0; + ch.port2.onmessage = () => { count++; }; + ch.port1.close(); + ch.port1.postMessage('ignored'); + await new Promise(resolve => queueMicrotask(resolve)); + count; + """) + end + + test "onmessage setter auto-starts the port", %{rt: rt} do + assert {:ok, "started"} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + ch.port1.postMessage('started'); + let received; + ch.port2.onmessage = (e) => { received = e.data; }; + await new Promise(resolve => queueMicrotask(resolve)); + received; + """) + end + + test "queued messages delivered after start", %{rt: rt} do + assert {:ok, ["a", "b", "c"]} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + const msgs = []; + ch.port2.addEventListener('message', (e) => { msgs.push(e.data); }); + ch.port1.postMessage('a'); + ch.port1.postMessage('b'); + ch.port1.postMessage('c'); + await new Promise(resolve => queueMicrotask(resolve)); + ch.port2.start(); + await new Promise(resolve => queueMicrotask(resolve)); + msgs; + """) + end + + test "MessageEvent has correct data property", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + let event; + ch.port2.onmessage = (e) => { event = e; }; + ch.port1.postMessage({ key: 'value' }); + await new Promise(resolve => queueMicrotask(resolve)); + event instanceof MessageEvent && event.type === 'message' && event.data.key === 'value'; + """) + end + + test "multiple messages in sequence", %{rt: rt} do + assert {:ok, [1, 2, 3]} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + const received = []; + ch.port2.onmessage = (e) => { received.push(e.data); }; + ch.port1.postMessage(1); + ch.port1.postMessage(2); + ch.port1.postMessage(3); + await new Promise(resolve => queueMicrotask(resolve)); + received; + """) + end + end + + describe "MessageChannel basics" do + test "MessageChannel creates two ports", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + mc.port1 !== undefined && mc.port2 !== undefined && + mc.port1 !== mc.port2 + """) + end + + test "ports are MessagePort instances", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + mc.port1.constructor.name === 'MessagePort' && + mc.port2.constructor.name === 'MessagePort' + """) + end + end + + describe "MessagePort messaging" do + test "posting on port1 delivers to port2", %{rt: rt} do + assert {:ok, "hello"} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + const result = await new Promise(resolve => { + mc.port2.onmessage = e => resolve(e.data); + mc.port1.postMessage("hello"); + }); + result + """) + end + + test "posting on port2 delivers to port1", %{rt: rt} do + assert {:ok, "world"} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + const result = await new Promise(resolve => { + mc.port1.onmessage = e => resolve(e.data); + mc.port2.postMessage("world"); + }); + result + """) + end + + test "data is cloned, not same reference", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + const original = { key: "value" }; + const result = await new Promise(resolve => { + mc.port2.onmessage = e => resolve(e.data); + mc.port1.postMessage(original); + }); + result.key === "value" && result !== original + """) + end + + test "multiple messages delivered in order", %{rt: rt} do + assert {:ok, "1,2,3"} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + const received = []; + const done = new Promise(resolve => { + mc.port2.onmessage = e => { + received.push(e.data); + if (received.length === 3) resolve(received.join(",")); + }; + }); + mc.port1.postMessage("1"); + mc.port1.postMessage("2"); + mc.port1.postMessage("3"); + await done + """) + end + + test "messages are async", %{rt: rt} do + assert {:ok, ["post", "received"]} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + const order = []; + ch.port2.onmessage = () => { order.push('received'); }; + ch.port1.postMessage('x'); + order.push('post'); + await new Promise(resolve => queueMicrotask(resolve)); + order; + """) + end + + test "structuredClone semantics", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + const original = { nested: { value: 42 } }; + let cloned; + ch.port2.onmessage = (e) => { cloned = e.data; }; + ch.port1.postMessage(original); + await new Promise(resolve => queueMicrotask(resolve)); + cloned.nested.value === 42 && cloned !== original && cloned.nested !== original.nested; + """) + end + end + + describe "MessageEvent properties" do + test "event has correct type and data", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + const event = await new Promise(resolve => { + mc.port2.onmessage = e => resolve(e); + mc.port1.postMessage(42); + }); + event.type === "message" && event.data === 42 + """) + end + + test "event has origin property", %{rt: rt} do + assert {:ok, ""} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + const event = await new Promise(resolve => { + mc.port2.onmessage = e => resolve(e); + mc.port1.postMessage("test"); + }); + event.origin + """) + end + + test "onmessageerror is settable", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const ch = new MessageChannel(); + ch.port1.onmessageerror = () => {}; + typeof ch.port1.onmessageerror === 'function'; + """) + end + end + + describe "close behavior" do + test "close prevents receiving messages", %{rt: rt} do + assert {:ok, "timeout"} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + mc.port2.onmessage = e => {}; + mc.port2.close(); + mc.port1.postMessage("should not arrive"); + const result = await Promise.race([ + new Promise(resolve => { + mc.port2.onmessage = e => resolve("received"); + }), + new Promise(resolve => setTimeout(() => resolve("timeout"), 50)) + ]); + result + """) + end + + test "posting after close is silently ignored", %{rt: rt} do + assert {:ok, "ok"} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + mc.port1.close(); + mc.port1.postMessage("ignored"); + "ok" + """) + end + + test "close on sender side, messages to closed port are lost", %{rt: rt} do + assert {:ok, "timeout"} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + mc.port2.onmessage = e => {}; + mc.port1.close(); + mc.port1.postMessage("lost"); + const result = await Promise.race([ + new Promise(resolve => { + mc.port2.onmessage = e => resolve("received"); + }), + new Promise(resolve => setTimeout(() => resolve("timeout"), 50)) + ]); + result + """) + end + end + + describe "start behavior" do + test "onmessage enables implicit start", %{rt: rt} do + assert {:ok, "delivered"} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + const result = await new Promise(resolve => { + mc.port2.onmessage = e => resolve("delivered"); + mc.port1.postMessage("test"); + }); + result + """) + end + + test "addEventListener requires explicit start", %{rt: rt} do + assert {:ok, "started"} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + const result = await new Promise(resolve => { + mc.port2.addEventListener("message", e => resolve("started")); + mc.port1.postMessage("test"); + mc.port2.start(); + }); + result + """) + end + + test "addEventListener without start does not deliver", %{rt: rt} do + assert {:ok, "timeout"} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + let received = false; + mc.port2.addEventListener("message", () => { received = true; }); + mc.port1.postMessage("test"); + await new Promise(resolve => setTimeout(resolve, 50)); + received ? "received" : "timeout" + """) + end + + test "messages queue before start, delivered after start", %{rt: rt} do + assert {:ok, "a,b,c"} = + QuickBEAM.eval(rt, """ + const mc = new MessageChannel(); + const received = []; + mc.port2.addEventListener("message", e => received.push(e.data)); + mc.port1.postMessage("a"); + mc.port1.postMessage("b"); + mc.port1.postMessage("c"); + mc.port2.start(); + await new Promise(resolve => setTimeout(resolve, 50)); + received.join(",") + """) + end + end +end diff --git a/test/web_apis/beam_new_web_apis_test.exs b/test/web_apis/beam_new_web_apis_test.exs new file mode 100644 index 000000000..8268cff68 --- /dev/null +++ b/test/web_apis/beam_new_web_apis_test.exs @@ -0,0 +1,433 @@ +defmodule QuickBEAM.WebAPIs.BeamNewWebAPIsTest do + use ExUnit.Case, async: true + @moduletag :beam_web_apis + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + {:ok, rt: rt} + end + + defp await_condition(fun, retries \\ 50) do + result = fun.() + + if result do + result + else + if retries > 0 do + Process.sleep(50) + await_condition(fun, retries - 1) + else + result + end + end + end + + # ── crypto.randomUUID ──────────────────────────────────── + + describe "crypto.randomUUID" do + test "returns a valid UUID v4 string", %{rt: rt} do + {:ok, uuid} = QuickBEAM.eval(rt, "crypto.randomUUID()") + assert uuid =~ ~r/^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/ + end + + test "returns unique values", %{rt: rt} do + {:ok, a} = QuickBEAM.eval(rt, "crypto.randomUUID()") + {:ok, b} = QuickBEAM.eval(rt, "crypto.randomUUID()") + assert a != b + end + + test "is a function", %{rt: rt} do + assert {:ok, "function"} = QuickBEAM.eval(rt, "typeof crypto.randomUUID") + end + end + + # ── Event / EventTarget ────────────────────────────────── + + describe "EventTarget" do + test "addEventListener and dispatchEvent", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const target = new EventTarget(); + let called = false; + target.addEventListener('test', () => { called = true; }); + target.dispatchEvent(new Event('test')); + called; + """) + end + + test "removeEventListener", %{rt: rt} do + assert {:ok, 1} = + QuickBEAM.eval(rt, """ + const target = new EventTarget(); + let count = 0; + const handler = () => { count++; }; + target.addEventListener('test', handler); + target.dispatchEvent(new Event('test')); + target.removeEventListener('test', handler); + target.dispatchEvent(new Event('test')); + count; + """) + end + + test "once option", %{rt: rt} do + assert {:ok, 1} = + QuickBEAM.eval(rt, """ + const target = new EventTarget(); + let count = 0; + target.addEventListener('test', () => { count++; }, { once: true }); + target.dispatchEvent(new Event('test')); + target.dispatchEvent(new Event('test')); + count; + """) + end + + test "multiple listeners fire in order", %{rt: rt} do + assert {:ok, [1, 2, 3]} = + QuickBEAM.eval(rt, """ + const target = new EventTarget(); + const order = []; + target.addEventListener('test', () => order.push(1)); + target.addEventListener('test', () => order.push(2)); + target.addEventListener('test', () => order.push(3)); + target.dispatchEvent(new Event('test')); + order; + """) + end + + test "stopImmediatePropagation", %{rt: rt} do + assert {:ok, [1]} = + QuickBEAM.eval(rt, """ + const target = new EventTarget(); + const order = []; + target.addEventListener('test', (e) => { order.push(1); e.stopImmediatePropagation(); }); + target.addEventListener('test', () => order.push(2)); + target.dispatchEvent(new Event('test')); + order; + """) + end + end + + # ── DOMException ───────────────────────────────────────── + + describe "DOMException" do + test "has name and message", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const e = new DOMException('test message', 'AbortError'); + e.name === 'AbortError' && e.message === 'test message' && e instanceof Error; + """) + end + end + + # ── AbortController / AbortSignal ──────────────────────── + + describe "AbortController" do + test "signal starts not aborted", %{rt: rt} do + assert {:ok, false} = + QuickBEAM.eval(rt, "new AbortController().signal.aborted") + end + + test "abort sets aborted and reason", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const ac = new AbortController(); + ac.abort(); + ac.signal.aborted && ac.signal.reason instanceof DOMException; + """) + end + + test "abort fires event listener", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const ac = new AbortController(); + let fired = false; + ac.signal.addEventListener('abort', () => { fired = true; }); + ac.abort(); + fired; + """) + end + + test "AbortSignal.abort() creates pre-aborted signal", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, "AbortSignal.abort().aborted") + end + + test "AbortSignal.timeout() aborts after ms", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const signal = AbortSignal.timeout(10); + await new Promise(resolve => setTimeout(resolve, 30)); + signal.aborted && signal.reason instanceof DOMException && signal.reason.name === 'TimeoutError'; + """) + end + + test "throwIfAborted throws when aborted", %{rt: rt} do + assert {:error, _} = + QuickBEAM.eval(rt, """ + const signal = AbortSignal.abort(); + signal.throwIfAborted(); + """) + end + + test "AbortSignal.any()", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const ac1 = new AbortController(); + const ac2 = new AbortController(); + const combined = AbortSignal.any([ac1.signal, ac2.signal]); + ac2.abort('reason2'); + combined.aborted && combined.reason === 'reason2'; + """) + end + end + + # ── Blob ───────────────────────────────────────────────── + + describe "Blob" do + test "size and type", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const blob = new Blob(['hello'], { type: 'text/plain' }); + blob.size === 5 && blob.type === 'text/plain'; + """) + end + + test "text()", %{rt: rt} do + assert {:ok, "hello world"} = + QuickBEAM.eval(rt, """ + const blob = new Blob(['hello', ' ', 'world']); + await blob.text(); + """) + end + + test "arrayBuffer()", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const blob = new Blob(['AB']); + const buf = await blob.arrayBuffer(); + buf instanceof ArrayBuffer && new Uint8Array(buf)[0] === 65; + """) + end + + test "slice()", %{rt: rt} do + assert {:ok, "ell"} = + QuickBEAM.eval(rt, """ + const blob = new Blob(['hello']); + const sliced = blob.slice(1, 4); + await sliced.text(); + """) + end + + test "empty blob", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const blob = new Blob(); + blob.size === 0 && blob.type === ''; + """) + end + + test "Uint8Array parts", %{rt: rt} do + assert {:ok, 3} = + QuickBEAM.eval(rt, """ + const blob = new Blob([new Uint8Array([1, 2, 3])]); + blob.size; + """) + end + end + + # ── File ───────────────────────────────────────────────── + + describe "File" do + test "has name and lastModified", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const file = new File(['content'], 'test.txt', { type: 'text/plain' }); + file.name === 'test.txt' && typeof file.lastModified === 'number' && file.size === 7; + """) + end + end + + # ── Headers ────────────────────────────────────────────── + + describe "Headers" do + test "case-insensitive get", %{rt: rt} do + assert {:ok, "bar"} = + QuickBEAM.eval(rt, """ + const h = new Headers([['Foo', 'bar']]); + h.get('foo'); + """) + end + + test "append joins with comma", %{rt: rt} do + assert {:ok, "a, b"} = + QuickBEAM.eval(rt, """ + const h = new Headers(); + h.append('x', 'a'); + h.append('x', 'b'); + h.get('x'); + """) + end + + test "set replaces", %{rt: rt} do + assert {:ok, "new"} = + QuickBEAM.eval(rt, """ + const h = new Headers([['x', 'old']]); + h.set('x', 'new'); + h.get('x'); + """) + end + + test "has/delete", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const h = new Headers([['x', 'y']]); + const had = h.has('x'); + h.delete('x'); + had && !h.has('x'); + """) + end + + test "entries are sorted", %{rt: rt} do + assert {:ok, ["a", "b", "c"]} = + QuickBEAM.eval(rt, """ + const h = new Headers([['c', '3'], ['a', '1'], ['b', '2']]); + [...h.keys()]; + """) + end + + test "construct from object", %{rt: rt} do + assert {:ok, "val"} = + QuickBEAM.eval(rt, """ + const h = new Headers({ key: 'val' }); + h.get('key'); + """) + end + end + + # ── ReadableStream ─────────────────────────────────────── + + describe "ReadableStream" do + test "read chunks from stream", %{rt: rt} do + assert {:ok, [1, 2, 3]} = + QuickBEAM.eval(rt, """ + const stream = new ReadableStream({ + start(controller) { + controller.enqueue(1); + controller.enqueue(2); + controller.enqueue(3); + controller.close(); + } + }); + const reader = stream.getReader(); + const results = []; + while (true) { + const { value, done } = await reader.read(); + if (done) break; + results.push(value); + } + results; + """) + end + + test "locked after getReader", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const stream = new ReadableStream(); + stream.getReader(); + stream.locked; + """) + end + + test "async iterator", %{rt: rt} do + assert {:ok, [10, 20]} = + QuickBEAM.eval(rt, """ + const stream = new ReadableStream({ + start(controller) { + controller.enqueue(10); + controller.enqueue(20); + controller.close(); + } + }); + const items = []; + for await (const chunk of stream) items.push(chunk); + items; + """) + end + end + + # ── Request ────────────────────────────────────────────── + + describe "Request" do + test "basic construction", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const req = new Request('https://example.com', { method: 'POST' }); + req.url === 'https://example.com' && req.method === 'POST'; + """) + end + + test "defaults to GET", %{rt: rt} do + assert {:ok, "GET"} = + QuickBEAM.eval(rt, "new Request('https://example.com').method") + end + + test "clone", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const req = new Request('https://example.com', { method: 'PUT' }); + const clone = req.clone(); + clone.url === req.url && clone.method === 'PUT' && clone !== req; + """) + end + end + + # ── Response ───────────────────────────────────────────── + + describe "Response" do + test "Response.json()", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const res = Response.json({ foo: 'bar' }); + res.status === 200 && res.headers.get('content-type') === 'application/json'; + """) + end + + test "Response.redirect()", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const res = Response.redirect('https://example.com', 301); + res.status === 301 && res.headers.get('location') === 'https://example.com'; + """) + end + end + + # ── BroadcastChannel ───────────────────────────────────── + + describe "BroadcastChannel" do + test "messages between two runtimes", _context do + unless Process.whereis(QuickBEAM.BroadcastChannel), + do: :pg.start_link(QuickBEAM.BroadcastChannel) + + {:ok, rt1} = QuickBEAM.start(mode: :beam) + {:ok, rt2} = QuickBEAM.start(mode: :beam) + + QuickBEAM.eval(rt1, """ + globalThis.__received = []; + const ch = new BroadcastChannel('test-chan'); + ch.onmessage = (e) => { globalThis.__received.push(e.data); }; + """) + + Process.sleep(100) + + QuickBEAM.eval(rt2, """ + const ch = new BroadcastChannel('test-chan'); + ch.postMessage('hello from rt2'); + """) + + assert await_condition(fn -> + {:ok, ["hello from rt2"]} == QuickBEAM.eval(rt1, "globalThis.__received") + end) + end + end +end diff --git a/test/web_apis/beam_performance_test.exs b/test/web_apis/beam_performance_test.exs new file mode 100644 index 000000000..b2a1cbd2b --- /dev/null +++ b/test/web_apis/beam_performance_test.exs @@ -0,0 +1,639 @@ +defmodule QuickBEAM.WebAPIs.BeamPerformanceTest do + @moduledoc "Merged from WPT: user-timing, performance-timeline + additional coverage" + use ExUnit.Case, async: true + @moduletag :beam_web_apis + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + %{rt: rt} + end + + describe "performance.timeOrigin" do + test "timeOrigin is a number", %{rt: rt} do + assert {:ok, "number"} = + QuickBEAM.eval(rt, "typeof performance.timeOrigin") + end + + test "is a positive number", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + typeof performance.timeOrigin === 'number' && performance.timeOrigin > 0 + """) + end + + test "timeOrigin is close to Date.now() at startup", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + Math.abs(performance.timeOrigin - Date.now()) < 1000 + """) + end + + test "is close to Date.now()", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + Math.abs(performance.timeOrigin - Date.now()) < 5000 + """) + end + end + + describe "performance.now()" do + test "still works after timeline augmentation", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const t = performance.now(); + typeof t === 'number' && t > 0 + """) + end + + test "still works after augmentation", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + typeof performance.now === 'function' && performance.now() > 0 + """) + end + end + + describe "performance.mark()" do + test "returns a mark with correct properties", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mark = performance.mark("test-mark"); + mark.name === "test-mark" && + mark.entryType === "mark" && + mark.duration === 0 && + typeof mark.startTime === "number" + """) + end + + test "creates a mark and returns PerformanceMark", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mark = performance.mark('test'); + mark.constructor.name === 'PerformanceMark' + """) + end + + test "mark has correct name and entryType", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mark = performance.mark('myMark'); + mark.name === 'myMark' && mark.entryType === 'mark' + """) + end + + test "mark has startTime and duration=0", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mark = performance.mark('m'); + typeof mark.startTime === 'number' && mark.startTime >= 0 && mark.duration === 0 + """) + end + + test "mark is a PerformanceMark", %{rt: rt} do + assert {:ok, "PerformanceMark"} = + QuickBEAM.eval(rt, """ + performance.mark("check-type").constructor.name + """) + end + + test "mark startTime defaults to performance.now()", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const before = performance.now(); + const mark = performance.mark("timed"); + const after = performance.now(); + mark.startTime >= before && mark.startTime <= after + """) + end + + test "mark with custom startTime", %{rt: rt} do + assert {:ok, 42.5} = + QuickBEAM.eval(rt, """ + performance.mark("custom", { startTime: 42.5 }).startTime + """) + end + + test "mark with custom startTime via options", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mark = performance.mark('custom', { startTime: 42.5 }); + mark.startTime === 42.5 + """) + end + + test "mark duration is always 0", %{rt: rt} do + assert {:ok, 0} = + QuickBEAM.eval(rt, """ + performance.mark("zero-dur", { startTime: 100 }).duration + """) + end + + test "mark has detail property", %{rt: rt} do + assert {:ok, "info"} = + QuickBEAM.eval(rt, """ + performance.mark("detailed", { detail: "info" }).detail + """) + end + + test "mark with detail", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mark = performance.mark('detailed', { detail: { key: 'value' } }); + mark.detail.key === 'value' + """) + end + + test "mark detail defaults to null", %{rt: rt} do + assert {:ok, nil} = + QuickBEAM.eval(rt, """ + performance.mark("no-detail").detail + """) + end + + test "mark without detail has null detail", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mark = performance.mark('noDetail'); + mark.detail === null + """) + end + + test "mark extends PerformanceEntry", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mark = performance.mark('e'); + 'name' in mark && 'entryType' in mark && 'startTime' in mark && 'duration' in mark + """) + end + end + + describe "performance.measure()" do + test "measure between two marks has correct duration", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("m-start", { startTime: 10 }); + performance.mark("m-end", { startTime: 30 }); + const measure = performance.measure("m", "m-start", "m-end"); + measure.startTime === 10 && measure.duration === 20 + """) + end + + test "measure between two marks", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark('start', { startTime: 100 }); + performance.mark('end', { startTime: 250 }); + const m = performance.measure('dur', 'start', 'end'); + m.name === 'dur' && m.entryType === 'measure' && m.duration === 150 && m.startTime === 100 + """) + end + + test "measure from mark to now", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark('s'); + const m = performance.measure('elapsed', 's'); + m.duration >= 0 && m.entryType === 'measure' + """) + end + + test "measure returns PerformanceMeasure", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const m = performance.measure('inst'); + m.constructor.name === 'PerformanceMeasure' && 'startTime' in m && 'duration' in m + """) + end + + test "measure is a PerformanceMeasure", %{rt: rt} do + assert {:ok, "PerformanceMeasure"} = + QuickBEAM.eval(rt, """ + performance.mark("ms"); + performance.measure("check-measure", "ms").constructor.name + """) + end + + test "measure has entryType 'measure'", %{rt: rt} do + assert {:ok, "measure"} = + QuickBEAM.eval(rt, """ + performance.mark("ms2"); + performance.measure("et", "ms2").entryType + """) + end + + test "measure from timeOrigin to now (no args)", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const m = performance.measure('total'); + m.startTime === 0 && m.duration >= 0 + """) + end + + test "measure with no args measures from timeOrigin to now", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const m = performance.measure("full"); + m.startTime === 0 && m.duration > 0 + """) + end + + test "measure with options object (start/end)", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark('a', { startTime: 10 }); + performance.mark('b', { startTime: 30 }); + const m = performance.measure('opts', { start: 'a', end: 'b' }); + m.startTime === 10 && m.duration === 20 + """) + end + + test "measure with options object", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("opt-start", { startTime: 5 }); + performance.mark("opt-end", { startTime: 15 }); + const m = performance.measure("opts", { start: "opt-start", end: "opt-end" }); + m.startTime === 5 && m.duration === 10 + """) + end + + test "measure with numeric start in options", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("num-end", { startTime: 25 }); + const m = performance.measure("num", { start: 10, end: "num-end" }); + m.startTime === 10 && m.duration === 15 + """) + end + + test "measure with duration option", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("dur-start", { startTime: 5 }); + const m = performance.measure("dur", { start: "dur-start", duration: 20 }); + m.startTime === 5 && m.duration === 20 + """) + end + + test "measure with options object (start/duration)", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const m = performance.measure('sd', { start: 5, duration: 15 }); + m.startTime === 5 && m.duration === 15 + """) + end + + test "measure with options object (end/duration)", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const m = performance.measure('ed', { end: 50, duration: 20 }); + m.startTime === 30 && m.duration === 20 + """) + end + + test "measure with detail", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const m = performance.measure('d', { start: 0, end: 10, detail: 'info' }); + m.detail === 'info' + """) + end + + test "measure throws for nonexistent mark", %{rt: rt} do + assert {:error, _} = + QuickBEAM.eval(rt, "performance.measure('bad', 'nonexistent')") + end + + test "measure throws on unknown mark name", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + let threw = false; + try { performance.measure("bad", "nonexistent"); } catch(e) { threw = true; } + threw + """) + end + end + + describe "performance.getEntries()" do + test "returns all entries in insertion order", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.clearMarks(); + performance.clearMeasures(); + performance.mark('a'); + performance.mark('b'); + performance.measure('m', 'a', 'b'); + const entries = performance.getEntries(); + entries.length === 3 && + entries[0].name === 'a' && + entries[1].name === 'b' && + entries[2].name === 'm' + """) + end + end + + describe "performance.getEntriesByType()" do + test "filters by mark type", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.clearMarks(); + performance.clearMeasures(); + performance.mark('x'); + performance.mark('y'); + performance.measure('z', 'x', 'y'); + const marks = performance.getEntriesByType('mark'); + marks.length === 2 && marks.every(e => e.entryType === 'mark') + """) + end + + test "filters by measure type", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.clearMarks(); + performance.clearMeasures(); + performance.mark('p'); + performance.mark('q'); + performance.measure('r', 'p', 'q'); + const measures = performance.getEntriesByType('measure'); + measures.length === 1 && measures[0].name === 'r' + """) + end + end + + describe "performance.getEntriesByName()" do + test "filters by name", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.clearMarks(); + performance.clearMeasures(); + performance.mark('target'); + performance.mark('other'); + performance.mark('target'); + const found = performance.getEntriesByName('target'); + found.length === 2 && found.every(e => e.name === 'target') + """) + end + + test "filters by name and type", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.clearMarks(); + performance.clearMeasures(); + performance.mark('same', { startTime: 0 }); + performance.measure('same', { start: 0, end: 10 }); + const marks = performance.getEntriesByName('same', 'mark'); + const measures = performance.getEntriesByName('same', 'measure'); + marks.length === 1 && marks[0].entryType === 'mark' && + measures.length === 1 && measures[0].entryType === 'measure' + """) + end + end + + describe "getEntries" do + test "getEntries returns all entries in order", %{rt: rt} do + assert {:ok, "a,b,c"} = + QuickBEAM.eval(rt, """ + performance.mark("a", { startTime: 1 }); + performance.mark("b", { startTime: 2 }); + performance.mark("c", { startTime: 3 }); + performance.getEntries().map(e => e.name).join(",") + """) + end + + test "getEntriesByType filters correctly", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("x", { startTime: 1 }); + performance.mark("y", { startTime: 5 }); + performance.measure("xy", "x", "y"); + const marks = performance.getEntriesByType("mark"); + const measures = performance.getEntriesByType("measure"); + marks.every(e => e.entryType === "mark") && + measures.every(e => e.entryType === "measure") && + measures.length >= 1 + """) + end + + test "getEntriesByName filters correctly", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("target", { startTime: 1 }); + performance.mark("other", { startTime: 2 }); + performance.mark("target", { startTime: 3 }); + const results = performance.getEntriesByName("target"); + results.length === 2 && results.every(e => e.name === "target") + """) + end + + test "getEntriesByName with type filter", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("shared", { startTime: 1 }); + performance.mark("shared-end", { startTime: 10 }); + performance.measure("shared", "shared", "shared-end"); + const marks = performance.getEntriesByName("shared", "mark"); + const measures = performance.getEntriesByName("shared", "measure"); + marks.every(e => e.entryType === "mark") && + measures.every(e => e.entryType === "measure") + """) + end + end + + describe "performance.clearMarks()" do + test "removes all marks but not measures", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.clearMarks(); + performance.clearMeasures(); + performance.mark('a', { startTime: 0 }); + performance.mark('b', { startTime: 10 }); + performance.measure('m', { start: 0, end: 10 }); + performance.clearMarks(); + performance.getEntriesByType('mark').length === 0 && + performance.getEntriesByType('measure').length === 1 + """) + end + + test "removes only marks with given name", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.clearMarks(); + performance.clearMeasures(); + performance.mark('keep'); + performance.mark('remove'); + performance.mark('keep'); + performance.clearMarks('remove'); + const marks = performance.getEntriesByType('mark'); + marks.length === 2 && marks.every(e => e.name === 'keep') + """) + end + end + + describe "performance.clearMeasures()" do + test "removes all measures but not marks", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.clearMarks(); + performance.clearMeasures(); + performance.mark('a', { startTime: 0 }); + performance.measure('m', { start: 0, end: 10 }); + performance.clearMeasures(); + performance.getEntriesByType('measure').length === 0 && + performance.getEntriesByType('mark').length === 1 + """) + end + + test "removes only measures with given name", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.clearMarks(); + performance.clearMeasures(); + performance.mark('a', { startTime: 0 }); + performance.mark('b', { startTime: 10 }); + performance.measure('keep', { start: 0, end: 5 }); + performance.measure('remove', { start: 0, end: 10 }); + performance.clearMeasures('remove'); + const measures = performance.getEntriesByType('measure'); + measures.length === 1 && measures[0].name === 'keep' + """) + end + end + + describe "clearMarks and clearMeasures" do + test "clearMarks clears only marks", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("cm1", { startTime: 1 }); + performance.mark("cm2", { startTime: 5 }); + performance.measure("cmm", "cm1", "cm2"); + performance.clearMarks(); + const marks = performance.getEntriesByType("mark"); + const measures = performance.getEntriesByType("measure"); + marks.length === 0 && measures.length >= 1 + """) + end + + test "clearMeasures clears only measures", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("cm3", { startTime: 1 }); + performance.mark("cm4", { startTime: 5 }); + performance.measure("cmm2", "cm3", "cm4"); + performance.clearMeasures(); + const marks = performance.getEntriesByType("mark"); + const measures = performance.getEntriesByType("measure"); + marks.length >= 2 && measures.length === 0 + """) + end + + test "clearMarks with name clears only named marks", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("keep", { startTime: 1 }); + performance.mark("remove", { startTime: 2 }); + performance.mark("keep", { startTime: 3 }); + performance.clearMarks("remove"); + const all = performance.getEntriesByType("mark"); + all.every(e => e.name !== "remove") && + all.filter(e => e.name === "keep").length >= 2 + """) + end + + test "clearMeasures with name clears only named measures", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("s1", { startTime: 1 }); + performance.mark("s2", { startTime: 5 }); + performance.measure("keep-m", "s1", "s2"); + performance.measure("remove-m", "s1", "s2"); + performance.clearMeasures("remove-m"); + const measures = performance.getEntriesByType("measure"); + measures.some(e => e.name === "keep-m") && + measures.every(e => e.name !== "remove-m") + """) + end + end + + describe "performance.toJSON()" do + test "returns object with timeOrigin", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const json = performance.toJSON(); + typeof json.timeOrigin === 'number' && json.timeOrigin > 0 + """) + end + end + + describe "toJSON" do + test "performance.toJSON() returns object with timeOrigin", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const json = performance.toJSON(); + typeof json === 'object' && typeof json.timeOrigin === 'number' + """) + end + + test "toJSON timeOrigin matches performance.timeOrigin", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.toJSON().timeOrigin === performance.timeOrigin + """) + end + end + + describe "PerformanceEntry.toJSON()" do + test "mark toJSON contains all fields", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mark = performance.mark('j', { startTime: 5, detail: 'hi' }); + const json = mark.toJSON(); + json.name === 'j' && json.entryType === 'mark' && + json.startTime === 5 && json.duration === 0 && json.detail === 'hi' + """) + end + + test "measure toJSON contains all fields", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const m = performance.measure('j', { start: 10, end: 30, detail: 42 }); + const json = m.toJSON(); + json.name === 'j' && json.entryType === 'measure' && + json.startTime === 10 && json.duration === 20 && json.detail === 42 + """) + end + end + + describe "entry toJSON" do + test "mark toJSON has all properties", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const mark = performance.mark("json-mark", { startTime: 5, detail: "d" }); + const json = mark.toJSON(); + json.name === "json-mark" && json.entryType === "mark" && + json.startTime === 5 && json.duration === 0 && json.detail === "d" + """) + end + + test "measure toJSON has all properties", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + performance.mark("jm1", { startTime: 10 }); + performance.mark("jm2", { startTime: 20 }); + const measure = performance.measure("json-measure", "jm1", "jm2"); + const json = measure.toJSON(); + json.name === "json-measure" && json.entryType === "measure" && + json.startTime === 10 && json.duration === 10 + """) + end + end +end diff --git a/test/web_apis/beam_process_test.exs b/test/web_apis/beam_process_test.exs new file mode 100644 index 000000000..df2b43234 --- /dev/null +++ b/test/web_apis/beam_process_test.exs @@ -0,0 +1,327 @@ +defmodule QuickBEAM.WebAPIs.BeamProcessTest do + use ExUnit.Case, async: true + @moduletag :beam_web_apis + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + %{rt: rt} + end + + describe "Beam.self()" do + test "returns the owner GenServer PID", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "Beam.self()") + assert is_pid(result) + assert result == rt + end + end + + describe "Beam.onMessage" do + test "receives messages from Elixir", %{rt: rt} do + QuickBEAM.eval(rt, """ + globalThis.messages = []; + Beam.onMessage((msg) => { + globalThis.messages.push(msg); + }); + """) + + QuickBEAM.send_message(rt, "hello") + QuickBEAM.send_message(rt, 42) + QuickBEAM.send_message(rt, %{key: "value"}) + Process.sleep(50) + + {:ok, messages} = QuickBEAM.eval(rt, "globalThis.messages") + assert messages == ["hello", 42, %{"key" => "value"}] + end + + test "replaces previous handler", %{rt: rt} do + QuickBEAM.eval(rt, """ + globalThis.result = []; + Beam.onMessage((msg) => { globalThis.result.push("first:" + msg); }); + """) + + QuickBEAM.send_message(rt, "a") + Process.sleep(30) + + QuickBEAM.eval(rt, """ + Beam.onMessage((msg) => { globalThis.result.push("second:" + msg); }); + """) + + QuickBEAM.send_message(rt, "b") + Process.sleep(30) + + {:ok, result} = QuickBEAM.eval(rt, "globalThis.result") + assert result == ["first:a", "second:b"] + end + + test "receives messages during await", _ctx do + {:ok, rt} = + QuickBEAM.start( + handlers: %{ + "slow_call" => fn _ -> + Process.sleep(100) + "done" + end + } + ) + + QuickBEAM.eval(rt, """ + globalThis.received = []; + Beam.onMessage((msg) => { + globalThis.received.push(msg); + }); + """) + + task = + Task.async(fn -> + QuickBEAM.eval(rt, """ + const result = await Beam.call("slow_call"); + result; + """) + end) + + Process.sleep(30) + QuickBEAM.send_message(rt, "during_await") + {:ok, result} = Task.await(task) + assert result == "done" + + {:ok, received} = QuickBEAM.eval(rt, "globalThis.received") + assert received == ["during_await"] + + QuickBEAM.stop(rt) + end + + test "discards messages when no handler is set", %{rt: rt} do + QuickBEAM.send_message(rt, "dropped") + Process.sleep(30) + {:ok, result} = QuickBEAM.eval(rt, "typeof globalThis.lastMessage") + assert result == "undefined" + end + + test "handler errors don't crash the runtime", %{rt: rt} do + QuickBEAM.eval(rt, """ + Beam.onMessage((msg) => { + throw new Error("handler error"); + }); + """) + + QuickBEAM.send_message(rt, "trigger_error") + Process.sleep(30) + + {:ok, result} = QuickBEAM.eval(rt, "1 + 1") + assert result == 2 + end + + test "requires a function argument", %{rt: rt} do + {:error, error} = QuickBEAM.eval(rt, "Beam.onMessage('not a function')") + assert error.message =~ "function" + end + end + + describe "Beam.send" do + test "sends a message to a BEAM process", %{rt: rt} do + QuickBEAM.eval(rt, """ + globalThis.targetPid = null; + Beam.onMessage((msg) => { + globalThis.targetPid = msg; + }); + """) + + # Send our PID to the JS runtime + QuickBEAM.send_message(rt, self()) + Process.sleep(30) + + # Now JS sends a message back to us + QuickBEAM.eval(rt, "Beam.send(globalThis.targetPid, {from: 'js', value: 42})") + + assert_receive %{"from" => "js", "value" => 42}, 1000 + end + + test "sends complex data types", %{rt: rt} do + QuickBEAM.eval(rt, """ + Beam.onMessage((pid) => { + Beam.send(pid, [1, "hello", true, null, {nested: "value"}]); + }); + """) + + QuickBEAM.send_message(rt, self()) + assert_receive [1, "hello", true, nil, %{"nested" => "value"}], 1000 + end + + test "requires pid and message arguments", %{rt: rt} do + {:error, error} = QuickBEAM.eval(rt, "Beam.send()") + assert error.message =~ "pid and a message" + end + + test "throws on invalid PID", %{rt: rt} do + {:error, error} = QuickBEAM.eval(rt, "Beam.send('not_a_pid', 'hello')") + assert error.message =~ "PID" + end + end + + describe "Process.monitor" do + @tag :skip # Requires inter-process Beam.monitor — not available in single-process BEAM mode + test "callback fires when monitored process exits normally", %{rt: rt} do + pid = spawn(fn -> Process.sleep(50) end) + + QuickBEAM.eval(rt, """ + globalThis.downFired = false; + globalThis.downReason = null; + Beam.onMessage((msg) => { + if (msg.action === "monitor") { + Beam.monitor(msg.pid, (reason) => { + globalThis.downFired = true; + globalThis.downReason = reason; + }); + } + }); + """) + + QuickBEAM.send_message(rt, %{action: "monitor", pid: pid}) + Process.sleep(200) + + assert {:ok, true} = QuickBEAM.eval(rt, "downFired") + assert {:ok, "normal"} = QuickBEAM.eval(rt, "downReason") + end + + test "callback fires with exit reason", %{rt: rt} do + pid = + spawn(fn -> + Process.sleep(50) + exit(:kaboom) + end) + + QuickBEAM.eval(rt, """ + globalThis.downReason = null; + Beam.onMessage((msg) => { + Beam.monitor(msg, (reason) => { + globalThis.downReason = reason; + }); + }); + """) + + QuickBEAM.send_message(rt, pid) + Process.sleep(500) + + assert {:ok, "kaboom"} = QuickBEAM.eval(rt, "downReason") + end + + test "monitor returns a reference", %{rt: rt} do + pid = spawn(fn -> Process.sleep(5000) end) + + QuickBEAM.eval(rt, """ + globalThis.monRef = null; + Beam.onMessage((pid) => { + globalThis.monRef = Beam.monitor(pid, () => {}); + }); + """) + + QuickBEAM.send_message(rt, pid) + Process.sleep(50) + + {:ok, ref} = QuickBEAM.eval(rt, "monRef") + assert is_reference(ref) + Process.exit(pid, :kill) + end + + test "demonitor cancels the callback", %{rt: rt} do + pid = spawn(fn -> Process.sleep(100) end) + + QuickBEAM.eval(rt, """ + globalThis.downFired = false; + Beam.onMessage((pid) => { + const ref = Beam.monitor(pid, () => { + globalThis.downFired = true; + }); + Beam.demonitor(ref); + }); + """) + + QuickBEAM.send_message(rt, pid) + Process.sleep(250) + + assert {:ok, false} = QuickBEAM.eval(rt, "downFired") + end + + test "multiple monitors on different processes", %{rt: rt} do + pid1 = spawn(fn -> Process.sleep(50) end) + pid2 = spawn(fn -> Process.sleep(100) end) + + QuickBEAM.eval(rt, """ + globalThis.downs = []; + Beam.onMessage((msg) => { + Beam.monitor(msg.pid, (reason) => { + globalThis.downs.push(msg.name); + }); + }); + """) + + QuickBEAM.send_message(rt, %{pid: pid1, name: "first"}) + QuickBEAM.send_message(rt, %{pid: pid2, name: "second"}) + Process.sleep(250) + + {:ok, downs} = QuickBEAM.eval(rt, "downs") + assert "first" in downs + assert "second" in downs + end + + test "Beam.onMessage still works alongside monitors", %{rt: rt} do + pid = spawn(fn -> Process.sleep(50) end) + + QuickBEAM.eval(rt, """ + globalThis.regularMessages = []; + globalThis.downFired = false; + Beam.onMessage((msg) => { + if (typeof msg === "string") { + globalThis.regularMessages.push(msg); + } else { + Beam.monitor(msg, () => { globalThis.downFired = true; }); + } + }); + """) + + QuickBEAM.send_message(rt, "hello") + QuickBEAM.send_message(rt, pid) + QuickBEAM.send_message(rt, "world") + Process.sleep(200) + + assert {:ok, ["hello", "world"]} = QuickBEAM.eval(rt, "regularMessages") + assert {:ok, true} = QuickBEAM.eval(rt, "downFired") + end + end + + describe "PID round-trip" do + test "PID survives Elixir→JS→Elixir conversion", %{rt: rt} do + original_pid = self() + + {:ok, _} = + QuickBEAM.start( + handlers: %{ + "echo" => fn [val] -> val end + } + ) + + QuickBEAM.eval(rt, """ + globalThis.storedPid = null; + Beam.onMessage((msg) => { + globalThis.storedPid = msg; + }); + """) + + QuickBEAM.send_message(rt, original_pid) + Process.sleep(30) + + {:ok, returned_pid} = QuickBEAM.eval(rt, "globalThis.storedPid") + assert returned_pid == original_pid + end + end +end diff --git a/test/web_apis/beam_storage_test.exs b/test/web_apis/beam_storage_test.exs new file mode 100644 index 000000000..c184b916a --- /dev/null +++ b/test/web_apis/beam_storage_test.exs @@ -0,0 +1,79 @@ +defmodule QuickBEAM.WebAPIs.BeamStorageTest do + use ExUnit.Case, async: false + + setup do + QuickBEAM.Storage.init() + QuickBEAM.Storage.clear([]) + {:ok, rt} = QuickBEAM.start() + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + {:ok, rt: rt} + end + + describe "localStorage" do + test "setItem and getItem", %{rt: rt} do + assert {:ok, nil} = QuickBEAM.eval(rt, ~s[localStorage.getItem("x")]) + + QuickBEAM.eval(rt, ~s[localStorage.setItem("x", "hello")]) + + assert {:ok, "hello"} = QuickBEAM.eval(rt, ~s[localStorage.getItem("x")]) + end + + test "removeItem", %{rt: rt} do + QuickBEAM.eval(rt, ~s[localStorage.setItem("y", "val")]) + QuickBEAM.eval(rt, ~s[localStorage.removeItem("y")]) + + assert {:ok, nil} = QuickBEAM.eval(rt, ~s[localStorage.getItem("y")]) + end + + test "clear", %{rt: rt} do + QuickBEAM.eval(rt, ~s[localStorage.setItem("a", "1")]) + QuickBEAM.eval(rt, ~s[localStorage.setItem("b", "2")]) + QuickBEAM.eval(rt, ~s[localStorage.clear()]) + + assert {:ok, 0} = QuickBEAM.eval(rt, "localStorage.length") + end + + test "length", %{rt: rt} do + assert {:ok, 0} = QuickBEAM.eval(rt, "localStorage.length") + + QuickBEAM.eval(rt, ~s[localStorage.setItem("k1", "v1")]) + QuickBEAM.eval(rt, ~s[localStorage.setItem("k2", "v2")]) + + assert {:ok, 2} = QuickBEAM.eval(rt, "localStorage.length") + end + + test "key(index)", %{rt: rt} do + QuickBEAM.eval(rt, ~s[localStorage.setItem("alpha", "1")]) + QuickBEAM.eval(rt, ~s[localStorage.setItem("beta", "2")]) + + assert {:ok, "alpha"} = QuickBEAM.eval(rt, "localStorage.key(0)") + assert {:ok, "beta"} = QuickBEAM.eval(rt, "localStorage.key(1)") + assert {:ok, nil} = QuickBEAM.eval(rt, "localStorage.key(99)") + end + + test "shared across runtimes", %{rt: rt} do + {:ok, rt2} = QuickBEAM.start() + + QuickBEAM.eval(rt, ~s[localStorage.setItem("shared", "from rt1")]) + + assert {:ok, "from rt1"} = + QuickBEAM.eval(rt2, ~s[localStorage.getItem("shared")]) + + QuickBEAM.stop(rt2) + end + + test "values are coerced to strings", %{rt: rt} do + QuickBEAM.eval(rt, ~s[localStorage.setItem("num", 42)]) + + assert {:ok, "42"} = QuickBEAM.eval(rt, ~s[localStorage.getItem("num")]) + end + end +end diff --git a/test/web_apis/beam_streams_writable_test.exs b/test/web_apis/beam_streams_writable_test.exs new file mode 100644 index 000000000..2151a4e2f --- /dev/null +++ b/test/web_apis/beam_streams_writable_test.exs @@ -0,0 +1,165 @@ +defmodule QuickBEAM.WebAPIs.BeamWritableStreamTest do + use ExUnit.Case, async: true + @moduletag :beam_web_apis + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + {:ok, rt: rt} + end + + describe "WritableStream" do + test "basic write and close", %{rt: rt} do + assert {:ok, "a,b,c"} = + QuickBEAM.eval(rt, """ + const chunks = []; + const ws = new WritableStream({ + write(chunk) { chunks.push(chunk); } + }); + const writer = ws.getWriter(); + await writer.write("a"); + await writer.write("b"); + await writer.write("c"); + await writer.close(); + chunks.join(",") + """) + end + + test "locked after getWriter", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const ws = new WritableStream(); + ws.getWriter(); + ws.locked + """) + end + + test "unlocked after releaseLock", %{rt: rt} do + assert {:ok, false} = + QuickBEAM.eval(rt, """ + const ws = new WritableStream(); + const w = ws.getWriter(); + w.releaseLock(); + ws.locked + """) + end + end + + describe "TransformStream" do + test "basic transform", %{rt: rt} do + assert {:ok, [2, 4, 6]} = + QuickBEAM.eval(rt, """ + const ts = new TransformStream({ + transform(chunk, controller) { + controller.enqueue(chunk * 2); + } + }); + const writer = ts.writable.getWriter(); + const reader = ts.readable.getReader(); + writer.write(1); + writer.write(2); + writer.write(3); + writer.close(); + const results = []; + while (true) { + const { value, done } = await reader.read(); + if (done) break; + results.push(value); + } + results + """) + end + + test "passthrough when no transform", %{rt: rt} do + assert {:ok, ["a", "b"]} = + QuickBEAM.eval(rt, """ + const ts = new TransformStream(); + const writer = ts.writable.getWriter(); + const reader = ts.readable.getReader(); + writer.write("a"); + writer.write("b"); + writer.close(); + const results = []; + while (true) { + const { value, done } = await reader.read(); + if (done) break; + results.push(value); + } + results + """) + end + end + + describe "TextEncoderStream" do + test "encodes strings to Uint8Arrays", %{rt: rt} do + assert {:ok, [72, 105]} = + QuickBEAM.eval(rt, """ + const ts = new TextEncoderStream(); + const writer = ts.writable.getWriter(); + const reader = ts.readable.getReader(); + writer.write("Hi"); + writer.close(); + const { value } = await reader.read(); + [...value] + """) + end + end + + describe "TextDecoderStream" do + test "decodes Uint8Arrays to strings", %{rt: rt} do + assert {:ok, "Hi"} = + QuickBEAM.eval(rt, """ + const ts = new TextDecoderStream(); + const writer = ts.writable.getWriter(); + const reader = ts.readable.getReader(); + writer.write(new Uint8Array([72, 105])); + writer.close(); + const { value } = await reader.read(); + value + """) + end + end + + describe "pipeThrough" do + test "ReadableStream.pipeThrough a TransformStream", %{rt: rt} do + assert {:ok, ["HELLO", "WORLD"]} = + QuickBEAM.eval(rt, """ + const rs = new ReadableStream({ + start(controller) { + controller.enqueue("hello"); + controller.enqueue("world"); + controller.close(); + } + }); + const upper = new TransformStream({ + transform(chunk, ctrl) { ctrl.enqueue(chunk.toUpperCase()); } + }); + const reader = rs.pipeThrough(upper).getReader(); + const results = []; + while (true) { + const { value, done } = await reader.read(); + if (done) break; + results.push(value); + } + results + """) + end + end + + describe "pipeTo" do + test "ReadableStream.pipeTo a WritableStream", %{rt: rt} do + assert {:ok, [1, 2, 3]} = + QuickBEAM.eval(rt, """ + const collected = []; + const rs = new ReadableStream({ + start(c) { c.enqueue(1); c.enqueue(2); c.enqueue(3); c.close(); } + }); + const ws = new WritableStream({ + write(chunk) { collected.push(chunk); } + }); + await rs.pipeTo(ws); + collected + """) + end + end +end diff --git a/test/web_apis/beam_subtle_crypto_test.exs b/test/web_apis/beam_subtle_crypto_test.exs new file mode 100644 index 000000000..7be1157bc --- /dev/null +++ b/test/web_apis/beam_subtle_crypto_test.exs @@ -0,0 +1,284 @@ +defmodule QuickBEAM.WebAPIs.BeamSubtleCryptoTest do + use ExUnit.Case, async: true + @moduletag :beam_web_apis + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + {:ok, rt: rt} + end + + describe "crypto.subtle.digest" do + test "SHA-256", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const data = new TextEncoder().encode('hello'); + const hash = await crypto.subtle.digest('SHA-256', data); + const arr = new Uint8Array(hash); + arr.length === 32 && arr[0] === 0x2c && arr[1] === 0xf2; + """) + end + + test "SHA-1", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const hash = await crypto.subtle.digest('SHA-1', new TextEncoder().encode('hello')); + new Uint8Array(hash).length === 20; + """) + end + + test "SHA-384", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const hash = await crypto.subtle.digest('SHA-384', new TextEncoder().encode('hello')); + new Uint8Array(hash).length === 48; + """) + end + + test "SHA-512", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const hash = await crypto.subtle.digest('SHA-512', new TextEncoder().encode('hello')); + new Uint8Array(hash).length === 64; + """) + end + + test "digest with object algorithm", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const hash = await crypto.subtle.digest({name: 'SHA-256'}, new TextEncoder().encode('test')); + new Uint8Array(hash).length === 32; + """) + end + + test "digest returns ArrayBuffer", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const hash = await crypto.subtle.digest('SHA-256', new Uint8Array([1,2,3])); + hash instanceof ArrayBuffer; + """) + end + + test "empty input", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const hash = await crypto.subtle.digest('SHA-256', new Uint8Array()); + new Uint8Array(hash).length === 32; + """) + end + end + + describe "crypto.subtle.generateKey" do + test "HMAC key", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const key = await crypto.subtle.generateKey( + {name: 'HMAC', hash: 'SHA-256'}, + true, ['sign', 'verify'] + ); + key.type === 'secret' && key.algorithm === 'HMAC' && key.data.length === 64; + """) + end + + test "AES-GCM key", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const key = await crypto.subtle.generateKey( + {name: 'AES-GCM', length: 256}, + true, ['encrypt', 'decrypt'] + ); + key.type === 'secret' && key.data.length === 32; + """) + end + + test "ECDSA key pair", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const pair = await crypto.subtle.generateKey( + {name: 'ECDSA', namedCurve: 'P-256'}, + true, ['sign', 'verify'] + ); + pair.publicKey.type === 'public' && pair.privateKey.type === 'private'; + """) + end + end + + describe "crypto.subtle.sign/verify HMAC" do + test "HMAC sign and verify", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const key = await crypto.subtle.generateKey( + {name: 'HMAC', hash: 'SHA-256'}, + true, ['sign', 'verify'] + ); + const data = new TextEncoder().encode('message'); + const sig = await crypto.subtle.sign('HMAC', key, data); + sig instanceof ArrayBuffer && new Uint8Array(sig).length === 32; + """) + end + + test "HMAC verify returns true for valid", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const key = await crypto.subtle.generateKey( + {name: 'HMAC', hash: 'SHA-256'}, + true, ['sign', 'verify'] + ); + const data = new TextEncoder().encode('message'); + const sig = await crypto.subtle.sign('HMAC', key, data); + await crypto.subtle.verify('HMAC', key, sig, data); + """) + end + + test "HMAC verify returns false for tampered", %{rt: rt} do + assert {:ok, false} = + QuickBEAM.eval(rt, """ + const key = await crypto.subtle.generateKey( + {name: 'HMAC', hash: 'SHA-256'}, + true, ['sign', 'verify'] + ); + const data = new TextEncoder().encode('message'); + const sig = await crypto.subtle.sign('HMAC', key, data); + const other = new TextEncoder().encode('tampered'); + await crypto.subtle.verify('HMAC', key, sig, other); + """) + end + end + + describe "crypto.subtle.sign/verify ECDSA" do + test "ECDSA sign and verify", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const pair = await crypto.subtle.generateKey( + {name: 'ECDSA', namedCurve: 'P-256'}, + true, ['sign', 'verify'] + ); + const data = new TextEncoder().encode('hello'); + const sig = await crypto.subtle.sign( + {name: 'ECDSA', hash: 'SHA-256'}, + pair.privateKey, data + ); + await crypto.subtle.verify( + {name: 'ECDSA', hash: 'SHA-256'}, + pair.publicKey, sig, data + ); + """) + end + + test "ECDSA verify rejects wrong message", %{rt: rt} do + assert {:ok, false} = + QuickBEAM.eval(rt, """ + const pair = await crypto.subtle.generateKey( + {name: 'ECDSA', namedCurve: 'P-256'}, + true, ['sign', 'verify'] + ); + const data = new TextEncoder().encode('hello'); + const sig = await crypto.subtle.sign( + {name: 'ECDSA', hash: 'SHA-256'}, + pair.privateKey, data + ); + await crypto.subtle.verify( + {name: 'ECDSA', hash: 'SHA-256'}, + pair.publicKey, sig, new TextEncoder().encode('wrong') + ); + """) + end + end + + describe "crypto.subtle.encrypt/decrypt AES-GCM" do + test "encrypt and decrypt round-trip", %{rt: rt} do + assert {:ok, "secret message"} = + QuickBEAM.eval(rt, """ + const key = await crypto.subtle.generateKey( + {name: 'AES-GCM', length: 256}, + true, ['encrypt', 'decrypt'] + ); + const iv = crypto.getRandomValues(new Uint8Array(12)); + const data = new TextEncoder().encode('secret message'); + const ct = await crypto.subtle.encrypt({name: 'AES-GCM', iv}, key, data); + const pt = await crypto.subtle.decrypt({name: 'AES-GCM', iv}, key, ct); + new TextDecoder().decode(pt); + """) + end + + test "decrypt with wrong key fails", %{rt: rt} do + assert {:error, _} = + QuickBEAM.eval(rt, """ + const key1 = await crypto.subtle.generateKey({name: 'AES-GCM', length: 256}, true, ['encrypt', 'decrypt']); + const key2 = await crypto.subtle.generateKey({name: 'AES-GCM', length: 256}, true, ['encrypt', 'decrypt']); + const iv = crypto.getRandomValues(new Uint8Array(12)); + const ct = await crypto.subtle.encrypt({name: 'AES-GCM', iv}, key1, new TextEncoder().encode('test')); + await crypto.subtle.decrypt({name: 'AES-GCM', iv}, key2, ct); + """) + end + end + + describe "crypto.subtle.encrypt/decrypt AES-CBC" do + test "AES-CBC round-trip", %{rt: rt} do + assert {:ok, "hello world"} = + QuickBEAM.eval(rt, """ + const key = await crypto.subtle.generateKey( + {name: 'AES-CBC', length: 256}, + true, ['encrypt', 'decrypt'] + ); + const iv = crypto.getRandomValues(new Uint8Array(16)); + const data = new TextEncoder().encode('hello world'); + const ct = await crypto.subtle.encrypt({name: 'AES-CBC', iv}, key, data); + const pt = await crypto.subtle.decrypt({name: 'AES-CBC', iv}, key, ct); + new TextDecoder().decode(pt); + """) + end + end + + describe "crypto.subtle.deriveBits/deriveKey" do + test "PBKDF2 deriveBits", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const key = await crypto.subtle.importKey( + 'raw', new TextEncoder().encode('password'), + 'PBKDF2', false, ['deriveBits'] + ); + const bits = await crypto.subtle.deriveBits( + {name: 'PBKDF2', hash: 'SHA-256', salt: new TextEncoder().encode('salt'), iterations: 1000}, + key, 256 + ); + new Uint8Array(bits).length === 32; + """) + end + + test "PBKDF2 deriveKey for AES", %{rt: rt} do + assert {:ok, "encrypted round-trip"} = + QuickBEAM.eval(rt, """ + const baseKey = await crypto.subtle.importKey( + 'raw', new TextEncoder().encode('password'), + 'PBKDF2', false, ['deriveKey'] + ); + const key = await crypto.subtle.deriveKey( + {name: 'PBKDF2', hash: 'SHA-256', salt: new TextEncoder().encode('salt'), iterations: 1000}, + baseKey, + {name: 'AES-GCM', length: 256}, + true, ['encrypt', 'decrypt'] + ); + const iv = crypto.getRandomValues(new Uint8Array(12)); + const ct = await crypto.subtle.encrypt({name: 'AES-GCM', iv}, key, new TextEncoder().encode('encrypted round-trip')); + const pt = await crypto.subtle.decrypt({name: 'AES-GCM', iv}, key, ct); + new TextDecoder().decode(pt); + """) + end + end + + describe "crypto.subtle.importKey/exportKey" do + test "importKey raw and exportKey", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const raw = crypto.getRandomValues(new Uint8Array(32)); + const key = await crypto.subtle.importKey( + 'raw', raw, {name: 'AES-GCM'}, true, ['encrypt'] + ); + const exported = await crypto.subtle.exportKey('raw', key); + const arr = new Uint8Array(exported); + arr.length === 32 && arr.every((b, i) => b === raw[i]); + """) + end + end +end diff --git a/test/web_apis/beam_url_test.exs b/test/web_apis/beam_url_test.exs new file mode 100644 index 000000000..08f46b3f6 --- /dev/null +++ b/test/web_apis/beam_url_test.exs @@ -0,0 +1,384 @@ +defmodule QuickBEAM.WebAPIs.BeamURLTest do + use ExUnit.Case, async: true + @moduletag :beam_web_apis + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + {:ok, rt: rt} + end + + describe "URL constructor" do + test "parses basic URL", %{rt: rt} do + assert {:ok, "https://example.com/path"} = + QuickBEAM.eval(rt, "new URL('https://example.com/path').href") + end + + test "parses URL with all components", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://user:pass@example.com:8080/path?q=1#frag'); + u.protocol === 'https:' && + u.username === 'user' && + u.password === 'pass' && + u.hostname === 'example.com' && + u.port === '8080' && + u.pathname === '/path' && + u.search === '?q=1' && + u.hash === '#frag'; + """) + end + + test "throws TypeError on invalid URL", %{rt: rt} do + assert {:error, %QuickBEAM.JSError{name: "TypeError"}} = + QuickBEAM.eval(rt, "new URL('not-a-url')") + end + + test "resolves relative URL against base", %{rt: rt} do + assert {:ok, "https://example.com/bar"} = + QuickBEAM.eval(rt, "new URL('/bar', 'https://example.com/foo').href") + end + + test "resolves .. segments", %{rt: rt} do + assert {:ok, "https://example.com/bar"} = + QuickBEAM.eval(rt, "new URL('../bar', 'https://example.com/foo/baz').href") + end + + test "absolute URL ignores base", %{rt: rt} do + assert {:ok, "https://other.com/"} = + QuickBEAM.eval(rt, "new URL('https://other.com/', 'https://example.com/').href") + end + + test "throws on invalid base", %{rt: rt} do + assert {:error, %QuickBEAM.JSError{}} = + QuickBEAM.eval(rt, "new URL('/path', 'not-a-url')") + end + end + + describe "URL properties" do + test "protocol", %{rt: rt} do + assert {:ok, "https:"} = QuickBEAM.eval(rt, "new URL('https://example.com').protocol") + end + + test "hostname is lowercased", %{rt: rt} do + assert {:ok, "example.com"} = + QuickBEAM.eval(rt, "new URL('https://EXAMPLE.COM').hostname") + end + + test "default port is empty string", %{rt: rt} do + assert {:ok, ""} = QuickBEAM.eval(rt, "new URL('https://example.com').port") + assert {:ok, ""} = QuickBEAM.eval(rt, "new URL('http://example.com').port") + end + + test "non-default port is returned", %{rt: rt} do + assert {:ok, "8080"} = QuickBEAM.eval(rt, "new URL('https://example.com:8080').port") + end + + test "explicit default port 443 is omitted", %{rt: rt} do + assert {:ok, ""} = QuickBEAM.eval(rt, "new URL('https://example.com:443').port") + end + + test "pathname defaults to /", %{rt: rt} do + assert {:ok, "/"} = QuickBEAM.eval(rt, "new URL('https://example.com').pathname") + end + + test "search includes ?", %{rt: rt} do + assert {:ok, "?q=1"} = QuickBEAM.eval(rt, "new URL('https://example.com?q=1').search") + end + + test "empty search is empty string", %{rt: rt} do + assert {:ok, ""} = QuickBEAM.eval(rt, "new URL('https://example.com').search") + end + + test "hash includes #", %{rt: rt} do + assert {:ok, "#frag"} = QuickBEAM.eval(rt, "new URL('https://example.com#frag').hash") + end + + test "empty hash is empty string", %{rt: rt} do + assert {:ok, ""} = QuickBEAM.eval(rt, "new URL('https://example.com').hash") + end + + test "host includes port when non-default", %{rt: rt} do + assert {:ok, "example.com:8080"} = + QuickBEAM.eval(rt, "new URL('https://example.com:8080').host") + end + + test "host omits default port", %{rt: rt} do + assert {:ok, "example.com"} = + QuickBEAM.eval(rt, "new URL('https://example.com:443').host") + end + + test "origin for http/https", %{rt: rt} do + assert {:ok, "https://example.com"} = + QuickBEAM.eval(rt, "new URL('https://example.com/path').origin") + end + + test "origin with non-default port", %{rt: rt} do + assert {:ok, "https://example.com:8080"} = + QuickBEAM.eval(rt, "new URL('https://example.com:8080').origin") + end + end + + describe "URL setters" do + test "set pathname updates href", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com/foo'); + u.pathname = '/bar'; + u.pathname === '/bar' && u.href.includes('/bar'); + """) + end + + test "set search updates href", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com/path'); + u.search = '?q=hello'; + u.search === '?q=hello' && u.href.includes('?q=hello'); + """) + end + + test "set hash updates href", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com/path'); + u.hash = '#section'; + u.hash === '#section' && u.href.includes('#section'); + """) + end + + test "set hostname updates href", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com/path'); + u.hostname = 'other.com'; + u.hostname === 'other.com' && u.href.includes('other.com'); + """) + end + + test "set port updates href and host", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com/path'); + u.port = '9090'; + u.port === '9090' && u.host === 'example.com:9090'; + """) + end + end + + describe "URL.toString and toJSON" do + test "toString returns href", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com/path'); + u.toString() === u.href; + """) + end + + test "toJSON returns href", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com/path'); + u.toJSON() === u.href; + """) + end + end + + describe "URL.canParse" do + test "returns true for valid URL", %{rt: rt} do + assert {:ok, true} = QuickBEAM.eval(rt, "URL.canParse('https://example.com')") + end + + test "returns false for invalid URL", %{rt: rt} do + assert {:ok, false} = QuickBEAM.eval(rt, "URL.canParse('not-a-url')") + end + + test "returns true with valid base", %{rt: rt} do + assert {:ok, true} = QuickBEAM.eval(rt, "URL.canParse('/path', 'https://example.com')") + end + end + + describe "URLSearchParams" do + test "constructor from string", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams('a=1&b=2'); + p.get('a') === '1' && p.get('b') === '2'; + """) + end + + test "constructor from string with leading ?", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams('?a=1&b=2'); + p.get('a') === '1' && p.get('b') === '2'; + """) + end + + test "constructor from array", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams([['a', '1'], ['b', '2']]); + p.get('a') === '1' && p.get('b') === '2'; + """) + end + + test "constructor from object", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams({a: '1', b: '2'}); + p.get('a') === '1' && p.get('b') === '2'; + """) + end + + test "append", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams(); + p.append('key', 'val'); + p.get('key') === 'val' && p.toString() === 'key=val'; + """) + end + + test "delete by name", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams('a=1&b=2&a=3'); + p.delete('a'); + p.get('a') === null && p.get('b') === '2'; + """) + end + + test "delete by name and value", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams('a=1&b=2&a=3'); + p.delete('a', '1'); + p.getAll('a').length === 1 && p.getAll('a')[0] === '3'; + """) + end + + test "has", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams('a=1'); + p.has('a') && !p.has('b'); + """) + end + + test "set overwrites first, removes rest", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams('a=1&b=2&a=3'); + p.set('a', 'updated'); + p.getAll('a').length === 1 && p.get('a') === 'updated'; + """) + end + + test "sort", %{rt: rt} do + assert {:ok, "a=1&a=2&b=3"} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams('b=3&a=1&a=2'); + p.sort(); + p.toString(); + """) + end + + test "size", %{rt: rt} do + assert {:ok, 3} = + QuickBEAM.eval(rt, "new URLSearchParams('a=1&b=2&c=3').size") + end + + test "iteration", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams('a=1&b=2'); + const pairs = [...p]; + pairs.length === 2 && pairs[0][0] === 'a' && pairs[0][1] === '1'; + """) + end + + test "forEach", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams('a=1&b=2'); + const collected = []; + p.forEach((v, k) => collected.push([k, v])); + collected.length === 2 && collected[0][0] === 'a'; + """) + end + + test "keys/values", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const p = new URLSearchParams('a=1&b=2'); + [...p.keys()].join(',') === 'a,b' && + [...p.values()].join(',') === '1,2'; + """) + end + + test "plus decodes as space", %{rt: rt} do + assert {:ok, " "} = + QuickBEAM.eval(rt, "new URLSearchParams('key=+').get('key')") + end + + test "percent-encoded values", %{rt: rt} do + assert {:ok, "hello world"} = + QuickBEAM.eval(rt, "new URLSearchParams('key=hello%20world').get('key')") + end + end + + describe "URL.searchParams integration" do + test "searchParams reflects URL query", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com?a=1&b=2'); + u.searchParams.get('a') === '1' && u.searchParams.get('b') === '2'; + """) + end + + test "searchParams identity", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com?a=b'); + u.searchParams === u.searchParams; + """) + end + + test "searchParams mutation updates URL", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com/path?a=1'); + u.searchParams.set('a', 'updated'); + u.search === '?a=updated' && u.href.includes('?a=updated'); + """) + end + + test "searchParams.append updates URL", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com/path?a=1'); + u.searchParams.append('b', '2'); + u.search.includes('b=2'); + """) + end + + test "URL.search setter updates searchParams", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com/path?a=b'); + u.search = 'e=f&g=h'; + u.searchParams.get('e') === 'f' && u.searchParams.get('g') === 'h'; + """) + end + + test "clearing search clears searchParams", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const u = new URL('https://example.com/path?a=b'); + u.search = ''; + u.search === '' && u.searchParams.toString() === ''; + """) + end + end +end diff --git a/test/web_apis/beam_web_apis_test.exs b/test/web_apis/beam_web_apis_test.exs new file mode 100644 index 000000000..078f728da --- /dev/null +++ b/test/web_apis/beam_web_apis_test.exs @@ -0,0 +1,732 @@ +defmodule QuickBEAM.WebAPIs.BeamWebAPIsTest do + use ExUnit.Case, async: true + @moduletag :beam_web_apis + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + {:ok, rt: rt} + end + + # ── TextEncoder ────────────────────────────────────────────── + + describe "TextEncoder" do + test "encoding property is utf-8", %{rt: rt} do + assert {:ok, "utf-8"} = QuickBEAM.eval(rt, "new TextEncoder().encoding") + end + + test "encode returns Uint8Array", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, "new TextEncoder().encode('test') instanceof Uint8Array") + end + + test "encode ASCII", %{rt: rt} do + assert {:ok, [72, 101, 108, 108, 111]} = + QuickBEAM.eval(rt, "[...new TextEncoder().encode('Hello')]") + end + + test "encode empty string", %{rt: rt} do + assert {:ok, []} = QuickBEAM.eval(rt, "[...new TextEncoder().encode('')]") + end + + # WPT: api-basics.any.js — "Default inputs" + test "encode undefined returns empty", %{rt: rt} do + assert {:ok, []} = QuickBEAM.eval(rt, "[...new TextEncoder().encode()]") + assert {:ok, []} = QuickBEAM.eval(rt, "[...new TextEncoder().encode(undefined)]") + end + + # WPT: api-basics.any.js — UTF-8 multibyte + test "encode multibyte UTF-8", %{rt: rt} do + assert {:ok, [0xC2, 0xA2]} = QuickBEAM.eval(rt, "[...new TextEncoder().encode('¢')]") + assert {:ok, [0xE6, 0xB0, 0xB4]} = QuickBEAM.eval(rt, "[...new TextEncoder().encode('水')]") + + assert {:ok, [0xF0, 0x9D, 0x84, 0x9E]} = + QuickBEAM.eval(rt, "[...new TextEncoder().encode('𝄞')]") + end + + # WPT: api-basics.any.js — full sample round-trip + test "encode/decode round-trip with full Unicode sample", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const sample = 'z\\xA2\\u6C34\\uD834\\uDD1E\\uF8FF\\uDBFF\\uDFFD\\uFFFE'; + const bytes = [0x7A, 0xC2, 0xA2, 0xE6, 0xB0, 0xB4, 0xF0, 0x9D, 0x84, 0x9E, + 0xEF, 0xA3, 0xBF, 0xF4, 0x8F, 0xBF, 0xBD, 0xEF, 0xBF, 0xBE]; + const encoded = new TextEncoder().encode(sample); + const match = encoded.length === bytes.length && + encoded.every((b, i) => b === bytes[i]); + const decoded = new TextDecoder().decode(new Uint8Array(bytes)); + match && decoded === sample; + """) + end + + # WPT: textencoder-utf16-surrogates.any.js + test "lone surrogate lead → U+FFFD", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const encoded = new TextEncoder().encode('\\uD800'); + const decoded = new TextDecoder().decode(encoded); + decoded === '\\uFFFD'; + """) + end + + test "lone surrogate trail → U+FFFD", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const encoded = new TextEncoder().encode('\\uDC00'); + const decoded = new TextDecoder().decode(encoded); + decoded === '\\uFFFD'; + """) + end + + test "swapped surrogate pair → two U+FFFD", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const encoded = new TextEncoder().encode('\\uDC00\\uD800'); + const decoded = new TextDecoder().decode(encoded); + decoded === '\\uFFFD\\uFFFD'; + """) + end + + # WPT: encodeInto.any.js + test "encodeInto basic", %{rt: rt} do + assert {:ok, %{"read" => 2, "written" => 2}} = + QuickBEAM.eval(rt, """ + const buf = new Uint8Array(10); + new TextEncoder().encodeInto('Hi', buf); + """) + end + + test "encodeInto with zero-length destination", %{rt: rt} do + assert {:ok, %{"read" => 0, "written" => 0}} = + QuickBEAM.eval(rt, """ + const buf = new Uint8Array(0); + new TextEncoder().encodeInto('Hi', buf); + """) + end + + test "encodeInto: 4-byte char into 3-byte buffer → nothing written", %{rt: rt} do + assert {:ok, %{"read" => 0, "written" => 0}} = + QuickBEAM.eval(rt, """ + const buf = new Uint8Array(3); + new TextEncoder().encodeInto('\\u{1D306}', buf); + """) + end + + test "encodeInto: surrogate pair counts as 2 read chars", %{rt: rt} do + assert {:ok, %{"read" => 2, "written" => 4}} = + QuickBEAM.eval(rt, """ + const buf = new Uint8Array(4); + new TextEncoder().encodeInto('\\u{1D306}', buf); + """) + end + + test "encodeInto: lone surrogates produce replacement bytes", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const buf = new Uint8Array(10); + const { read, written } = new TextEncoder().encodeInto('\\uD834A\\uDF06A', buf); + // \\uD834 → FFFD (3 bytes), A (1), \\uDF06 → FFFD (3), A (1) = total 8 bytes, 4 read + read >= 4 && written >= 8; + """) + end + + test "encodeInto: ¥¥ into 4-byte buffer", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const buf = new Uint8Array(4); + const { read, written } = new TextEncoder().encodeInto('¥¥', buf); + read === 2 && written === 4 && + buf[0] === 0xC2 && buf[1] === 0xA5 && buf[2] === 0xC2 && buf[3] === 0xA5; + """) + end + + test "encodeInto writes to correct offset in subarray", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const buf = new Uint8Array(14); + buf.fill(0x80); + const view = new Uint8Array(buf.buffer, 4, 10); + new TextEncoder().encodeInto('A', view); + buf[3] === 0x80 && buf[4] === 0x41 && buf[5] === 0x80; + """) + end + end + + # ── TextDecoder ────────────────────────────────────────────── + + describe "TextDecoder" do + test "encoding property is utf-8", %{rt: rt} do + assert {:ok, "utf-8"} = QuickBEAM.eval(rt, "new TextDecoder().encoding") + end + + test "decode empty", %{rt: rt} do + assert {:ok, ""} = QuickBEAM.eval(rt, "new TextDecoder().decode()") + assert {:ok, ""} = QuickBEAM.eval(rt, "new TextDecoder().decode(undefined)") + assert {:ok, ""} = QuickBEAM.eval(rt, "new TextDecoder().decode(new Uint8Array())") + end + + test "decode ASCII bytes", %{rt: rt} do + assert {:ok, "Hello"} = + QuickBEAM.eval( + rt, + "new TextDecoder().decode(new Uint8Array([72, 101, 108, 108, 111]))" + ) + end + + test "decode multibyte UTF-8", %{rt: rt} do + assert {:ok, "¢"} = + QuickBEAM.eval(rt, "new TextDecoder().decode(new Uint8Array([0xC2, 0xA2]))") + + assert {:ok, "水"} = + QuickBEAM.eval(rt, "new TextDecoder().decode(new Uint8Array([0xE6, 0xB0, 0xB4]))") + end + + test "decode ArrayBuffer directly", %{rt: rt} do + assert {:ok, "AB"} = + QuickBEAM.eval(rt, "new TextDecoder().decode(new Uint8Array([65, 66]).buffer)") + end + + test "constructor labels: utf-8, UTF-8, utf8", %{rt: rt} do + assert {:ok, "utf-8"} = QuickBEAM.eval(rt, "new TextDecoder('utf-8').encoding") + assert {:ok, "utf-8"} = QuickBEAM.eval(rt, "new TextDecoder('UTF-8').encoding") + assert {:ok, "utf-8"} = QuickBEAM.eval(rt, "new TextDecoder('utf8').encoding") + end + + test "constructor with unsupported encoding throws", %{rt: rt} do + assert {:error, _} = QuickBEAM.eval(rt, "new TextDecoder('windows-1252')") + end + + test "round-trip encode/decode", %{rt: rt} do + assert {:ok, "Hello, 世界!"} = + QuickBEAM.eval(rt, """ + const text = 'Hello, 世界!'; + new TextDecoder().decode(new TextEncoder().encode(text)); + """) + end + + # WPT: textdecoder-fatal.any.js + test "fatal: true — invalid UTF-8 throws TypeError", %{rt: rt} do + cases = [ + "[0xFF]", + "[0xC0]", + "[0xE0]", + "[0xC0, 0x00]", + "[0xC0, 0xC0]", + "[0xE0, 0x00]", + "[0xE0, 0x80, 0x00]" + ] + + for bytes <- cases do + assert {:error, %QuickBEAM.JSError{name: "TypeError"}} = + QuickBEAM.eval( + rt, + "new TextDecoder('utf-8', {fatal: true}).decode(new Uint8Array(#{bytes}))" + ) + end + end + + test "fatal: true — overlong U+0000 encodings throw", %{rt: rt} do + overlong_cases = [ + "[0xC0, 0x80]", + "[0xE0, 0x80, 0x80]", + "[0xF0, 0x80, 0x80, 0x80]" + ] + + for bytes <- overlong_cases do + assert {:error, %QuickBEAM.JSError{name: "TypeError"}} = + QuickBEAM.eval( + rt, + "new TextDecoder('utf-8', {fatal: true}).decode(new Uint8Array(#{bytes}))" + ) + end + end + + test "fatal: true — UTF-8 encoded surrogates throw", %{rt: rt} do + assert {:error, %QuickBEAM.JSError{name: "TypeError"}} = + QuickBEAM.eval( + rt, + "new TextDecoder('utf-8', {fatal: true}).decode(new Uint8Array([0xED, 0xA0, 0x80]))" + ) + end + + test "fatal attribute defaults and can be set", %{rt: rt} do + assert {:ok, false} = QuickBEAM.eval(rt, "new TextDecoder().fatal") + assert {:ok, true} = QuickBEAM.eval(rt, "new TextDecoder('utf-8', {fatal: true}).fatal") + end + + test "fatal: error does not prevent future decodes", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const decoder = new TextDecoder('utf-8', {fatal: true}); + const good = new Uint8Array([226, 153, 165]); // ♥ + decoder.decode(good) === '♥' && + (() => { try { decoder.decode(new Uint8Array([226, 153])); return false; } catch { return true; } })() && + decoder.decode(good) === '♥'; + """) + end + + # WPT: textdecoder-byte-order-marks.any.js (UTF-8 BOM only — we only support UTF-8) + test "UTF-8 BOM is stripped from output", %{rt: rt} do + assert {:ok, "hello"} = + QuickBEAM.eval(rt, """ + new TextDecoder().decode(new Uint8Array([0xEF, 0xBB, 0xBF, 0x68, 0x65, 0x6C, 0x6C, 0x6F])) + """) + end + + test "UTF-8 data without BOM decodes normally", %{rt: rt} do + assert {:ok, "hello"} = + QuickBEAM.eval( + rt, + "new TextDecoder().decode(new Uint8Array([0x68, 0x65, 0x6C, 0x6C, 0x6F]))" + ) + end + end + + # ── btoa ────────────────────────────────────────────── + + describe "btoa" do + test "encode ASCII", %{rt: rt} do + assert {:ok, "SGVsbG8="} = QuickBEAM.eval(rt, "btoa('Hello')") + end + + test "encode empty string", %{rt: rt} do + assert {:ok, ""} = QuickBEAM.eval(rt, "btoa('')") + end + + # WPT: base64.any.js — padding variants + test "encode various lengths (padding)", %{rt: rt} do + assert {:ok, "YQ=="} = QuickBEAM.eval(rt, "btoa('a')") + assert {:ok, "YWI="} = QuickBEAM.eval(rt, "btoa('ab')") + assert {:ok, "YWJj"} = QuickBEAM.eval(rt, "btoa('abc')") + assert {:ok, "YWJjZA=="} = QuickBEAM.eval(rt, "btoa('abcd')") + assert {:ok, "YWJjZGU="} = QuickBEAM.eval(rt, "btoa('abcde')") + end + + test "encode \\xFF\\xFF\\xC0", %{rt: rt} do + assert {:ok, "///A"} = QuickBEAM.eval(rt, "btoa('\\xFF\\xFF\\xC0')") + end + + test "encode binary-safe: null bytes", %{rt: rt} do + assert {:ok, _} = QuickBEAM.eval(rt, "btoa('\\0a')") + assert {:ok, _} = QuickBEAM.eval(rt, "btoa('a\\0b')") + end + + test "encode all Latin-1 chars (0-255)", %{rt: rt} do + assert {:ok, _} = + QuickBEAM.eval(rt, """ + let s = ''; + for (let i = 0; i < 256; i++) s += String.fromCharCode(i); + btoa(s); + """) + end + + # WPT: base64.any.js — InvalidCharacterError for > U+00FF + test "throw on non-Latin-1 chars", %{rt: rt} do + assert {:error, _} = QuickBEAM.eval(rt, "btoa('\\u0100')") + assert {:error, _} = QuickBEAM.eval(rt, "btoa('\\u{1F600}')") + assert {:error, _} = QuickBEAM.eval(rt, "btoa(String.fromCharCode(10000))") + end + + # WPT: base64.any.js — WebIDL type coercion + test "WebIDL type coercion", %{rt: rt} do + assert {:ok, _} = QuickBEAM.eval(rt, "btoa(undefined)") + assert {:ok, _} = QuickBEAM.eval(rt, "btoa(null)") + assert {:ok, _} = QuickBEAM.eval(rt, "btoa(7)") + assert {:ok, _} = QuickBEAM.eval(rt, "btoa(12)") + assert {:ok, _} = QuickBEAM.eval(rt, "btoa(1.5)") + assert {:ok, _} = QuickBEAM.eval(rt, "btoa(true)") + assert {:ok, _} = QuickBEAM.eval(rt, "btoa(false)") + end + + test "round-trip: atob(btoa(x)) === String(x)", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + let s = ''; + for (let i = 0; i < 256; i++) s += String.fromCharCode(i); + atob(btoa(s)) === s; + """) + end + end + + # ── atob ────────────────────────────────────────────── + + describe "atob" do + test "decode basic", %{rt: rt} do + assert {:ok, "Hello"} = QuickBEAM.eval(rt, "atob('SGVsbG8=')") + end + + test "decode without padding", %{rt: rt} do + assert {:ok, "Hello"} = QuickBEAM.eval(rt, "atob('SGVsbG8')") + end + + test "decode with whitespace", %{rt: rt} do + assert {:ok, "Hello"} = QuickBEAM.eval(rt, "atob(' SGVs bG8= ')") + end + + test "throw on invalid input", %{rt: rt} do + assert {:error, _} = QuickBEAM.eval(rt, "atob('!')") + end + + # WPT: base64.any.js — atob IDL tests + test "atob(undefined) throws", %{rt: rt} do + assert {:error, _} = QuickBEAM.eval(rt, "atob(undefined)") + end + + test "atob(null) decodes to bytes", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "[...atob(null)].map(c => c.charCodeAt(0))") + assert result == [158, 233, 101] + end + + test "atob(12) decodes to bytes", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "[...atob(12)].map(c => c.charCodeAt(0))") + assert result == [215] + end + + test "atob(NaN) throws", %{rt: rt} do + {:ok, result} = QuickBEAM.eval(rt, "[...atob(NaN)].map(c => c.charCodeAt(0))") + assert result == [53, 163] + end + + test "atob(-Infinity) throws", %{rt: rt} do + assert {:error, _} = QuickBEAM.eval(rt, "atob(-Infinity)") + end + + test "atob(0) throws", %{rt: rt} do + assert {:error, _} = QuickBEAM.eval(rt, "atob(0)") + end + end + + # ── crypto.getRandomValues ────────────────────────────────── + + describe "crypto.getRandomValues" do + test "fills Uint8Array and returns same object", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const arr = new Uint8Array(16); + const result = crypto.getRandomValues(arr); + result === arr && arr.some(x => x !== 0); + """) + end + + # WPT: getRandomValues.any.js — integer array types + test "works with Int8Array", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval( + rt, + "crypto.getRandomValues(new Int8Array(8)).constructor === Int8Array" + ) + end + + test "works with Int16Array", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval( + rt, + "crypto.getRandomValues(new Int16Array(8)).constructor === Int16Array" + ) + end + + test "works with Int32Array", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval( + rt, + "crypto.getRandomValues(new Int32Array(4)).constructor === Int32Array" + ) + end + + test "works with Uint16Array", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval( + rt, + "crypto.getRandomValues(new Uint16Array(8)).constructor === Uint16Array" + ) + end + + test "works with Uint32Array", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval( + rt, + "crypto.getRandomValues(new Uint32Array(4)).constructor === Uint32Array" + ) + end + + test "works with Uint8ClampedArray", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval( + rt, + "crypto.getRandomValues(new Uint8ClampedArray(8)).constructor === Uint8ClampedArray" + ) + end + + # WPT: getRandomValues.any.js — zero-length + test "zero-length array returns empty", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, "crypto.getRandomValues(new Uint8Array(0)).length === 0") + end + + # WPT: getRandomValues.any.js — quota exceeded + test "throws for > 65536 bytes", %{rt: rt} do + assert {:error, _} = QuickBEAM.eval(rt, "crypto.getRandomValues(new Uint8Array(65537))") + end + + test "65536 bytes is exactly allowed", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval( + rt, + "crypto.getRandomValues(new Uint8Array(65536)).length === 65536" + ) + end + end + + # ── performance.now ────────────────────────────────────────── + + describe "performance.now" do + # WPT: hr-time-basic.any.js + test "performance exists and is an object", %{rt: rt} do + assert {:ok, "object"} = QuickBEAM.eval(rt, "typeof performance") + end + + test "performance.now is a function", %{rt: rt} do + assert {:ok, "function"} = QuickBEAM.eval(rt, "typeof performance.now") + end + + test "returns a number", %{rt: rt} do + assert {:ok, "number"} = QuickBEAM.eval(rt, "typeof performance.now()") + end + + test "returns a positive number", %{rt: rt} do + assert {:ok, true} = QuickBEAM.eval(rt, "performance.now() > 0") + end + + test "is monotonically non-decreasing", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const a = performance.now(); + const b = performance.now(); + (b - a) >= 0; + """) + end + + test "returns milliseconds in reasonable range", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const t = performance.now(); + t >= 0 && t < 60000; + """) + end + end + + # ── queueMicrotask ────────────────────────────────────────── + + describe "queueMicrotask" do + test "executes callback", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + await new Promise(resolve => { + let called = false; + queueMicrotask(() => { called = true; }); + Promise.resolve().then(() => resolve(called)); + }); + """) + end + + test "executes in FIFO order", %{rt: rt} do + assert {:ok, [1, 2, 3]} = + QuickBEAM.eval(rt, """ + await new Promise(resolve => { + const order = []; + queueMicrotask(() => order.push(1)); + queueMicrotask(() => order.push(2)); + queueMicrotask(() => order.push(3)); + Promise.resolve().then(() => resolve(order)); + }); + """) + end + + test "requires function argument", %{rt: rt} do + assert {:error, %QuickBEAM.JSError{name: "TypeError"}} = + QuickBEAM.eval(rt, "queueMicrotask(42)") + end + + test "microtask errors don't propagate", %{rt: rt} do + assert {:ok, "ok"} = + QuickBEAM.eval(rt, """ + await new Promise(resolve => { + queueMicrotask(() => { throw new Error('ignored'); }); + queueMicrotask(() => resolve('ok')); + }); + """) + end + end + + # ── structuredClone ────────────────────────────────────────── + + describe "structuredClone" do + test "clones objects deeply", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const orig = { a: 1, b: [2, 3] }; + const clone = structuredClone(orig); + clone.a === 1 && clone.b[0] === 2 && clone.b[1] === 3 && + clone !== orig && clone.b !== orig.b; + """) + end + + test "clones nested structures", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const orig = { x: { y: { z: 42 } } }; + const clone = structuredClone(orig); + clone.x.y.z === 42 && clone.x !== orig.x; + """) + end + + test "clones arrays", %{rt: rt} do + assert {:ok, [1, 2, 3]} = QuickBEAM.eval(rt, "structuredClone([1, 2, 3])") + end + + test "clones primitives", %{rt: rt} do + assert {:ok, 42} = QuickBEAM.eval(rt, "structuredClone(42)") + assert {:ok, "hello"} = QuickBEAM.eval(rt, "structuredClone('hello')") + assert {:ok, true} = QuickBEAM.eval(rt, "structuredClone(true)") + assert {:ok, nil} = QuickBEAM.eval(rt, "structuredClone(null)") + end + + test "clones Date objects", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const d = new Date('2024-01-01'); + const clone = structuredClone(d); + clone instanceof Date && clone.getTime() === d.getTime() && clone !== d; + """) + end + + test "clones RegExp objects", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const r = /test/gi; + const clone = structuredClone(r); + clone instanceof RegExp && clone.source === 'test' && + clone.flags === 'gi' && clone !== r; + """) + end + + test "clones Map and Set", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const m = new Map([['a', 1], ['b', 2]]); + const clone = structuredClone(m); + clone instanceof Map && clone.get('a') === 1 && clone !== m; + """) + end + + test "clones ArrayBuffer", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const buf = new Uint8Array([1, 2, 3]).buffer; + const clone = structuredClone(buf); + clone instanceof ArrayBuffer && clone.byteLength === 3 && + new Uint8Array(clone)[0] === 1 && clone !== buf; + """) + end + + test "throws on functions", %{rt: rt} do + assert {:error, _} = QuickBEAM.eval(rt, "structuredClone(() => {})") + end + + test "clones undefined", %{rt: rt} do + assert {:ok, nil} = QuickBEAM.eval(rt, "structuredClone(undefined)") + end + end + + # ── console ────────────────────────────────────────────── + + describe "console" do + test "console.log exists", %{rt: rt} do + assert {:ok, "function"} = QuickBEAM.eval(rt, "typeof console.log") + end + + test "console.warn exists", %{rt: rt} do + assert {:ok, "function"} = QuickBEAM.eval(rt, "typeof console.warn") + end + + test "console.error exists", %{rt: rt} do + assert {:ok, "function"} = QuickBEAM.eval(rt, "typeof console.error") + end + + test "console.log returns undefined", %{rt: rt} do + assert {:ok, nil} = QuickBEAM.eval(rt, "console.log('test')") + end + end + + # ── Timers ────────────────────────────────────────────── + + describe "timers" do + test "setTimeout executes", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + await new Promise(resolve => setTimeout(() => resolve(true), 1)); + """) + end + + test "setTimeout with delay", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const start = performance.now(); + await new Promise(resolve => setTimeout(() => resolve(true), 10)); + performance.now() - start >= 9; + """) + end + + test "clearTimeout cancels", %{rt: rt} do + assert {:ok, "not called"} = + QuickBEAM.eval(rt, """ + await new Promise(resolve => { + const id = setTimeout(() => resolve('called'), 10); + clearTimeout(id); + setTimeout(() => resolve('not called'), 20); + }); + """) + end + + test "setInterval fires multiple times", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + await new Promise(resolve => { + let count = 0; + const id = setInterval(() => { + count++; + if (count >= 3) { clearInterval(id); resolve(true); } + }, 5); + }); + """) + end + + test "clearInterval stops", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + await new Promise(resolve => { + let count = 0; + const id = setInterval(() => count++, 5); + setTimeout(() => { + clearInterval(id); + const snapshot = count; + setTimeout(() => resolve(count === snapshot), 20); + }, 30); + }); + """) + end + + test "setTimeout returns numeric id", %{rt: rt} do + assert {:ok, true} = QuickBEAM.eval(rt, "typeof setTimeout(() => {}, 0) === 'number'") + end + + test "setInterval returns numeric id", %{rt: rt} do + assert {:ok, true} = + QuickBEAM.eval(rt, """ + const id = setInterval(() => {}, 100); + clearInterval(id); + typeof id === 'number'; + """) + end + end +end diff --git a/test/web_apis/beam_worker_test.exs b/test/web_apis/beam_worker_test.exs new file mode 100644 index 000000000..b8017ab74 --- /dev/null +++ b/test/web_apis/beam_worker_test.exs @@ -0,0 +1,98 @@ +defmodule QuickBEAM.WebAPIs.BeamWorkerTest do + use ExUnit.Case, async: true + @moduletag :beam_web_apis + + setup do + QuickBEAM.VM.Heap.reset() + {:ok, rt} = QuickBEAM.start(mode: :beam) + + on_exit(fn -> + try do + QuickBEAM.stop(rt) + catch + :exit, _ -> :ok + end + end) + + {:ok, rt: rt} + end + + test "Worker sends message back to parent", %{rt: rt} do + assert {:ok, "hello from worker"} = + QuickBEAM.eval(rt, """ + await new Promise((resolve) => { + const w = new Worker(`self.postMessage("hello from worker")`); + w.onmessage = (e) => resolve(e.data); + }) + """) + end + + test "Worker receives message from parent", %{rt: rt} do + assert {:ok, "pong: ping"} = + QuickBEAM.eval(rt, """ + await new Promise((resolve) => { + const w = new Worker(` + self.onmessage = (e) => { + self.postMessage("pong: " + e.data); + }; + + self.postMessage("__ready__"); + `); + + w.onmessage = (e) => { + if (e.data === "__ready__") { + w.onmessage = (reply) => resolve(reply.data); + w.postMessage("ping"); + } + }; + }) + """) + end + + test "Worker runs independently and can do computation", %{rt: rt} do + assert {:ok, 55} = + QuickBEAM.eval(rt, """ + await new Promise((resolve) => { + const w = new Worker(` + let sum = 0; + for (let i = 1; i <= 10; i++) sum += i; + self.postMessage(sum); + `); + w.onmessage = (e) => resolve(e.data); + }) + """) + end + + test "Worker can be terminated", %{rt: rt} do + assert {:ok, "terminated"} = + QuickBEAM.eval(rt, """ + const w = new Worker(` + setTimeout(() => self.postMessage("should not arrive"), 500); + `); + w.terminate(); + "terminated" + """) + end + + test "multiple Workers run concurrently", %{rt: rt} do + assert {:ok, [1, 2, 3]} = + QuickBEAM.eval( + rt, + """ + await new Promise((resolve) => { + const results = []; + let count = 0; + for (let i = 1; i <= 3; i++) { + const w = new Worker(`self.postMessage(${i})`); + w.onmessage = (e) => { + results.push(e.data); + count++; + if (count === 3) resolve(results.sort()); + }; + } + }) + """, + timeout: 5000 + ) + end +end