V8 Binding: Introduce toNativeWithTypeCheck

Source/bindings/tests/results/V8TestInterfaceConstructor2.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 68 matching lines @@
     RefPtr<TestInterfaceConstructor2> impl = TestInterfaceConstructor2::create(stringArg);
     v8::Handle<v8::Object> wrapper = info.Holder();
 
     V8DOMWrapper::associateObjectWithWrapper<V8TestInterfaceConstructor2>(impl.release(), &V8TestInterfaceConstructor2::wrapperTypeInfo, wrapper, info.GetIsolate(), WrapperConfiguration::Dependent);
     v8SetReturnValue(info, wrapper);
 }
 
 static void constructor2(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ConstructionContext, "TestInterfaceConstructor2", info.Holder(), info.GetIsolate());
-    V8TRYCATCH_VOID(TestInterfaceEmpty*, testInterfaceEmptyArg, V8TestInterfaceEmpty::hasInstance(info[0], info.GetIsolate()) ? V8TestInterfaceEmpty::toNative(v8::Handle<v8::Object>::Cast(info[0])) : 0);
+    V8TRYCATCH_VOID(TestInterfaceEmpty*, testInterfaceEmptyArg, V8TestInterfaceEmpty::toNativeWithTypeCheck(info.GetIsolate(), info[0]));
     V8TRYCATCH_EXCEPTION_VOID(int, longArg, toInt32(info[1], exceptionState), exceptionState);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, defaultUndefinedOptionalStringArg, info[2]);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, defaultNullStringOptionalStringArg, argumentOrNull(info, 3));
     V8TRYCATCH_VOID(Dictionary, defaultUndefinedOptionalDictionaryArg, Dictionary(info[4], info.GetIsolate()));
     if (!defaultUndefinedOptionalDictionaryArg.isUndefinedOrNull() && !defaultUndefinedOptionalDictionaryArg.isObject()) {
         exceptionState.throwTypeError("parameter 5 ('defaultUndefinedOptionalDictionaryArg') is not an object.");
         exceptionState.throwIfNeeded();
         return;
     }
     RefPtr<TestInterfaceConstructor2> impl = TestInterfaceConstructor2::create(testInterfaceEmptyArg, longArg, defaultUndefinedOptionalStringArg, defaultNullStringOptionalStringArg, defaultUndefinedOptionalDictionaryArg);
@@ skipping 74 matching lines @@
     data->templateMap(currentWorldType).add(&wrapperTypeInfo, UnsafePersistent<v8::FunctionTemplate>(isolate, templ));
     return handleScope.Escape(templ);
 }
 
 bool V8TestInterfaceConstructor2::hasInstance(v8::Handle<v8::Value> jsValue, v8::Isolate* isolate)
 {
     return V8PerIsolateData::from(isolate)->hasInstanceInMainWorld(&wrapperTypeInfo, jsValue)
         || V8PerIsolateData::from(isolate)->hasInstanceInNonMainWorld(&wrapperTypeInfo, jsValue);
 }
 
+TestInterfaceConstructor2* V8TestInterfaceConstructor2::toNativeWithTypeCheck(v8::Isolate* isolate, v8::Handle<v8::Value> value)
+{
+    return hasInstance(value, isolate) ? fromInternalPointer(v8::Handle<v8::Object>::Cast(value)->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex)) : 0;
+}
+
 v8::Handle<v8::Object> V8TestInterfaceConstructor2::createWrapper(PassRefPtr<TestInterfaceConstructor2> impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     ASSERT(impl);
     ASSERT(!DOMDataStore::containsWrapper<V8TestInterfaceConstructor2>(impl.get(), isolate));
     if (ScriptWrappable::wrapperCanBeStoredInObject(impl.get())) {
         const WrapperTypeInfo* actualInfo = ScriptWrappable::getTypeInfoFromObject(impl.get());
         // Might be a XXXConstructor::wrapperTypeInfo instead of an XXX::wrapperTypeInfo. These will both have
         // the same object de-ref functions, though, so use that as the basis of the check.
         RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(actualInfo->derefObjectFunction == wrapperTypeInfo.derefObjectFunction);
     }
@@ skipping 12 matching lines @@
     fromInternalPointer(object)->deref();
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfaceConstructor2* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore