V8 Binding: Introduce toNativeWithTypeCheck

Source/bindings/tests/results/V8TestSVG.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 73 matching lines @@
 static void animatedReflectedAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestSVGV8Internal::animatedReflectedAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void animatedReflectedAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TestSVG* imp = V8TestSVG::toNative(info.Holder());
-    V8TRYCATCH_VOID(SVGAnimatedString*, cppValue, V8SVGAnimatedString::hasInstance(jsValue, info.GetIsolate()) ? V8SVGAnimatedString::toNative(v8::Handle<v8::Object>::Cast(jsValue)) : 0);
+    V8TRYCATCH_VOID(SVGAnimatedString*, cppValue, V8SVGAnimatedString::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     imp->setAttribute(HTMLNames::animatedreflectedattributeAttr, WTF::getPtr(cppValue));
 }
 
 static void animatedReflectedAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestSVGV8Internal::animatedReflectedAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void mutablePointAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TestSVG* imp = V8TestSVG::toNative(info.Holder());
     v8SetReturnValueFast(info, imp->mutablePoint(), imp);
 }
 
 static void mutablePointAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestSVGV8Internal::mutablePointAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void mutablePointAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TestSVG* imp = V8TestSVG::toNative(info.Holder());
-    V8TRYCATCH_VOID(SVGPointTearOff*, cppValue, V8SVGPoint::hasInstance(jsValue, info.GetIsolate()) ? V8SVGPoint::toNative(v8::Handle<v8::Object>::Cast(jsValue)) : 0);
+    V8TRYCATCH_VOID(SVGPointTearOff*, cppValue, V8SVGPoint::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     imp->setMutablePoint(WTF::getPtr(cppValue));
 }
 
 static void mutablePointAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestSVGV8Internal::mutablePointAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void immutablePointAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TestSVG* imp = V8TestSVG::toNative(info.Holder());
     v8SetReturnValueFast(info, imp->immutablePoint(), imp);
 }
 
 static void immutablePointAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestSVGV8Internal::immutablePointAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void immutablePointAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TestSVG* imp = V8TestSVG::toNative(info.Holder());
-    V8TRYCATCH_VOID(SVGPointTearOff*, cppValue, V8SVGPoint::hasInstance(jsValue, info.GetIsolate()) ? V8SVGPoint::toNative(v8::Handle<v8::Object>::Cast(jsValue)) : 0);
+    V8TRYCATCH_VOID(SVGPointTearOff*, cppValue, V8SVGPoint::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     imp->setImmutablePoint(WTF::getPtr(cppValue));
 }
 
 static void immutablePointAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestSVGV8Internal::immutablePointAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
@@ skipping 38 matching lines @@
 
 static void svgPointMethodMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "svgPointMethod", "TestSVG", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 2)) {
         exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(2, info.Length()));
         exceptionState.throwIfNeeded();
         return;
     }
     TestSVG* imp = V8TestSVG::toNative(info.Holder());
-    V8TRYCATCH_VOID(SVGPointTearOff*, item, V8SVGPoint::hasInstance(info[0], info.GetIsolate()) ? V8SVGPoint::toNative(v8::Handle<v8::Object>::Cast(info[0])) : 0);
+    V8TRYCATCH_VOID(SVGPointTearOff*, item, V8SVGPoint::toNativeWithTypeCheck(info.GetIsolate(), info[0]));
     V8TRYCATCH_EXCEPTION_VOID(unsigned, index, toUInt32(info[1], exceptionState), exceptionState);
     v8SetReturnValue(info, imp->svgPointMethod(item, index));
 }
 
 static void svgPointMethodMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
     TestSVGV8Internal::svgPointMethodMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void strictSVGPointMethodMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "strictSVGPointMethod", "TestSVG", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 2)) {
         exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(2, info.Length()));
         exceptionState.throwIfNeeded();
         return;
     }
     TestSVG* imp = V8TestSVG::toNative(info.Holder());
     if (info.Length() > 0 && !V8SVGPoint::hasInstance(info[0], info.GetIsolate())) {
         exceptionState.throwTypeError("parameter 1 is not of type 'SVGPoint'.");
         exceptionState.throwIfNeeded();
         return;
     }
-    V8TRYCATCH_VOID(SVGPointTearOff*, item, V8SVGPoint::hasInstance(info[0], info.GetIsolate()) ? V8SVGPoint::toNative(v8::Handle<v8::Object>::Cast(info[0])) : 0);
+    V8TRYCATCH_VOID(SVGPointTearOff*, item, V8SVGPoint::toNativeWithTypeCheck(info.GetIsolate(), info[0]));
     V8TRYCATCH_EXCEPTION_VOID(unsigned, index, toUInt32(info[1], exceptionState), exceptionState);
     RefPtr<SVGPointTearOff> result = imp->strictSVGPointMethod(item, index, exceptionState);
     if (exceptionState.throwIfNeeded())
         return;
     v8SetReturnValue(info, result.release());
 }
 
 static void strictSVGPointMethodMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
@@ skipping 48 matching lines @@
     data->templateMap(currentWorldType).add(&wrapperTypeInfo, UnsafePersistent<v8::FunctionTemplate>(isolate, templ));
     return handleScope.Escape(templ);
 }
 
 bool V8TestSVG::hasInstance(v8::Handle<v8::Value> jsValue, v8::Isolate* isolate)
 {
     return V8PerIsolateData::from(isolate)->hasInstanceInMainWorld(&wrapperTypeInfo, jsValue)
         || V8PerIsolateData::from(isolate)->hasInstanceInNonMainWorld(&wrapperTypeInfo, jsValue);
 }
 
+TestSVG* V8TestSVG::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> V8TestSVG::createWrapper(PassRefPtr<TestSVG> impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     ASSERT(impl);
     ASSERT(!DOMDataStore::containsWrapper<V8TestSVG>(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(TestSVG* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore