Add JS Native Wrapper API

Source/Modules/javascript.cxx

@@ -197,6 +197,11 @@ public:
    */
   virtual int emitWrapperFunction(Node *n);
 
+  /**
+   * Invoked by nativeWrapper callback
+   */
+  virtual int emitNativeFunction(Node *n);
+
   /**
    * Invoked from constantWrapper after call to Language::constantWrapper.
    **/
@@ -311,6 +316,7 @@ public:
   virtual int classHandler(Node *n);
   virtual int functionWrapper(Node *n);
   virtual int constantWrapper(Node *n);
+  virtual int nativeWrapper(Node *n);
   virtual void main(int argc, char *argv[]);
   virtual int top(Node *n);
 
@@ -441,6 +447,18 @@ int JAVASCRIPT::constantWrapper(Node *n) {
   return SWIG_OK;
 }
 
+/* ---------------------------------------------------------------------
+ * nativeWrapper()
+ *
+ * Function wrapper for generating placeholders for native functions
+ * --------------------------------------------------------------------- */
+
+int JAVASCRIPT::nativeWrapper(Node *n) {
+  emitter->emitNativeFunction(n);
+
+  return SWIG_OK;
+}
+
 /* ---------------------------------------------------------------------
  * classHandler()
  *
@@ -768,6 +786,17 @@ int JSEmitter::emitWrapperFunction(Node *n) {
   return ret;
 }
 
+int JSEmitter::emitNativeFunction(Node *n) {
+  String *wrap_name = Getattr(n, "wrap:name");
+
+  Setattr(n, "feature:extend", "last");
+  enterFunction(n);
+  state.function(WRAPPER_NAME, wrap_name);
+  exitFunction(n);
+
+  return SWIG_OK;
+}
+
 int JSEmitter::enterClass(Node *n) {
   state.clazz(RESET);
   state.clazz(NAME, Getattr(n, "sym:name"));