V8 Binding: Introduce toNativeWithTypeCheck

Source/bindings/tests/results/V8TestSVG.cpp

Index: Source/bindings/tests/results/V8TestSVG.cpp
diff --git a/Source/bindings/tests/results/V8TestSVG.cpp b/Source/bindings/tests/results/V8TestSVG.cpp
index 0604dd33105d08d6266a9d13ba9428aabe78ac86..4c265a3761933b74b7752e72be8753752b821bf8 100644
--- a/Source/bindings/tests/results/V8TestSVG.cpp
+++ b/Source/bindings/tests/results/V8TestSVG.cpp
@@ -91,7 +91,7 @@ static void animatedReflectedAttributeAttributeGetterCallback(v8::Local<v8::Stri
 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));
 }
@@ -120,7 +120,7 @@ static void mutablePointAttributeGetterCallback(v8::Local<v8::String>, const v8:
 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));
 }
 
@@ -147,7 +147,7 @@ static void immutablePointAttributeGetterCallback(v8::Local<v8::String>, const v
 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));
 }
 
@@ -206,7 +206,7 @@ static void svgPointMethodMethod(const v8::FunctionCallbackInfo<v8::Value>& info
         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));
 }
@@ -232,7 +232,7 @@ static void strictSVGPointMethodMethod(const v8::FunctionCallbackInfo<v8::Value>
         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())
@@ -301,6 +301,11 @@ bool V8TestSVG::hasInstance(v8::Handle<v8::Value> jsValue, v8::Isolate* isolate)
         || 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);