refactor: organize direct FFI backends

.gitignore

@@ -65,8 +65,8 @@ packages/*/types
 SwiftBindgen
 
 # Generated Objective-C/C dispatch wrappers
-NativeScript/ffi/napi/GeneratedSignatureDispatch.inc
-NativeScript/ffi/napi/GeneratedSignatureDispatch.inc.stamp
+NativeScript/ffi/*/GeneratedSignatureDispatch.inc
+NativeScript/ffi/*/GeneratedSignatureDispatch.inc.stamp
 
 # React Native TurboModule package staging
 packages/react-native/dist/

NativeScript/CMakeLists.txt

@@ -157,13 +157,6 @@ endif()
 
 message(STATUS "NS_FFI_BACKEND = ${NS_FFI_BACKEND} (${NS_EFFECTIVE_FFI_BACKEND})")
 
-if(NS_EFFECTIVE_FFI_BACKEND STREQUAL "direct" AND
-   NOT (NS_GSD_BACKEND STREQUAL "auto" OR NS_GSD_BACKEND STREQUAL "none"))
-  message(FATAL_ERROR
-    "NS_GSD_BACKEND is only used by the Node-API FFI backend. "
-    "Use NS_GSD_BACKEND=auto or none with NS_FFI_BACKEND=direct.")
-endif()
-
 if(NS_GSD_BACKEND STREQUAL "auto")
   if(NS_EFFECTIVE_FFI_BACKEND STREQUAL "direct")
     set(NS_EFFECTIVE_GSD_BACKEND "none")
@@ -200,6 +193,12 @@ if(NS_EFFECTIVE_FFI_BACKEND STREQUAL "napi" AND
     "NS_FFI_BACKEND=napi is the pure Node-API FFI backend and only supports "
     "NS_GSD_BACKEND=napi or none.")
 endif()
+if(NS_EFFECTIVE_FFI_BACKEND STREQUAL "direct" AND
+   NS_EFFECTIVE_GSD_BACKEND STREQUAL "napi")
+  message(FATAL_ERROR
+    "NS_FFI_BACKEND=direct cannot use NS_GSD_BACKEND=napi. "
+    "Use the matching engine backend or none.")
+endif()
 
 message(STATUS "NS_GSD_BACKEND = ${NS_GSD_BACKEND} (${NS_EFFECTIVE_GSD_BACKEND})")
 
@@ -240,12 +239,12 @@ set(FFI_NAPI_SOURCE_FILES
 )
 
 set(FFI_DIRECT_SHARED_SOURCE_FILES
-  ffi/shared/direct/EmbeddedMetadata.mm
+  ffi/direct/EmbeddedMetadata.mm
 )
 
 set(FFI_HERMES_DIRECT_SOURCE_FILES
   ${FFI_DIRECT_SHARED_SOURCE_FILES}
-  ffi/hermes/jsi/NativeApiJsi.mm
+  ffi/hermes/NativeApiJsi.mm
 )
 
 set(FFI_V8_DIRECT_SOURCE_FILES
@@ -516,15 +515,31 @@ set(NS_GSD_BACKEND_JSC_VALUE 0)
 set(NS_GSD_BACKEND_QUICKJS_VALUE 0)
 set(NS_GSD_BACKEND_HERMES_VALUE 0)
 set(NS_GSD_BACKEND_NAPI_VALUE 0)
+set(NS_GSD_BACKEND_ENGINE_DIRECT_VALUE 0)
+set(NS_GSD_BACKEND_DIRECT_PREPARED_VALUE 0)
 set(NS_FFI_BACKEND_DIRECT_VALUE 0)
 set(NS_FFI_BACKEND_NAPI_VALUE 0)
 
 if(NS_EFFECTIVE_GSD_BACKEND STREQUAL "v8")
-  set(NS_GSD_BACKEND_V8_VALUE 1)
+  if(NS_EFFECTIVE_FFI_BACKEND STREQUAL "direct")
+    set(NS_GSD_BACKEND_DIRECT_PREPARED_VALUE 1)
+  else()
+    set(NS_GSD_BACKEND_V8_VALUE 1)
+  endif()
 elseif(NS_EFFECTIVE_GSD_BACKEND STREQUAL "jsc")
-  set(NS_GSD_BACKEND_JSC_VALUE 1)
+  if(NS_EFFECTIVE_FFI_BACKEND STREQUAL "direct")
+    set(NS_GSD_BACKEND_DIRECT_PREPARED_VALUE 1)
+  else()
+    set(NS_GSD_BACKEND_JSC_VALUE 1)
+    set(NS_GSD_BACKEND_ENGINE_DIRECT_VALUE 1)
+  endif()
 elseif(NS_EFFECTIVE_GSD_BACKEND STREQUAL "quickjs")
-  set(NS_GSD_BACKEND_QUICKJS_VALUE 1)
+  if(NS_EFFECTIVE_FFI_BACKEND STREQUAL "direct")
+    set(NS_GSD_BACKEND_DIRECT_PREPARED_VALUE 1)
+  else()
+    set(NS_GSD_BACKEND_QUICKJS_VALUE 1)
+    set(NS_GSD_BACKEND_ENGINE_DIRECT_VALUE 1)
+  endif()
 elseif(NS_EFFECTIVE_GSD_BACKEND STREQUAL "hermes")
   set(NS_GSD_BACKEND_HERMES_VALUE 1)
 elseif(NS_EFFECTIVE_GSD_BACKEND STREQUAL "napi")
@@ -543,6 +558,8 @@ target_compile_definitions(${NAME} PRIVATE
   NS_GSD_BACKEND_QUICKJS=${NS_GSD_BACKEND_QUICKJS_VALUE}
   NS_GSD_BACKEND_HERMES=${NS_GSD_BACKEND_HERMES_VALUE}
   NS_GSD_BACKEND_NAPI=${NS_GSD_BACKEND_NAPI_VALUE}
+  NS_GSD_BACKEND_ENGINE_DIRECT=${NS_GSD_BACKEND_ENGINE_DIRECT_VALUE}
+  NS_GSD_BACKEND_DIRECT_PREPARED=${NS_GSD_BACKEND_DIRECT_PREPARED_VALUE}
   NS_FFI_BACKEND_DIRECT=${NS_FFI_BACKEND_DIRECT_VALUE}
   NS_FFI_BACKEND_NAPI=${NS_FFI_BACKEND_NAPI_VALUE}
 )