V8 Binding: Introduce toNativeWithTypeCheck

Source/bindings/tests/results/V8TestInterfacePython.cpp

Index: Source/bindings/tests/results/V8TestInterfacePython.cpp
diff --git a/Source/bindings/tests/results/V8TestInterfacePython.cpp b/Source/bindings/tests/results/V8TestInterfacePython.cpp
index d00193c7c720aed0f223adec580435e57cda5ca3..4c3e79d47490476e7e314fdfadbc3a005545849f 100644
--- a/Source/bindings/tests/results/V8TestInterfacePython.cpp
+++ b/Source/bindings/tests/results/V8TestInterfacePython.cpp
@@ -105,7 +105,7 @@ static void testInterfacePythonAttributeAttributeSetter(v8::Local<v8::Value> jsV
         return;
     }
     TestInterfacePythonImplementation* imp = V8TestInterfacePython::toNative(info.Holder());
-    V8TRYCATCH_VOID(TestInterfacePythonImplementation*, cppValue, V8TestInterfacePython::hasInstance(jsValue, info.GetIsolate()) ? V8TestInterfacePython::toNative(v8::Handle<v8::Object>::Cast(jsValue)) : 0);
+    V8TRYCATCH_VOID(TestInterfacePythonImplementation*, cppValue, V8TestInterfacePython::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     imp->setTestInterfacePythonAttribute(WTF::getPtr(cppValue));
 }
 
@@ -294,7 +294,7 @@ static void implementsNodeAttributeAttributeSetter(v8::Local<v8::Value> jsValue,
         return;
     }
     TestInterfacePythonImplementation* imp = V8TestInterfacePython::toNative(info.Holder());
-    V8TRYCATCH_VOID(Node*, cppValue, V8Node::hasInstance(jsValue, info.GetIsolate()) ? V8Node::toNative(v8::Handle<v8::Object>::Cast(jsValue)) : 0);
+    V8TRYCATCH_VOID(Node*, cppValue, V8Node::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     TestImplements::setImplementsNodeAttribute(imp, WTF::getPtr(cppValue));
 }
 
@@ -355,7 +355,7 @@ static void implementsRuntimeEnabledNodeAttributeAttributeSetter(v8::Local<v8::V
         return;
     }
     TestInterfacePythonImplementation* imp = V8TestInterfacePython::toNative(info.Holder());
-    V8TRYCATCH_VOID(Node*, cppValue, V8Node::hasInstance(jsValue, info.GetIsolate()) ? V8Node::toNative(v8::Handle<v8::Object>::Cast(jsValue)) : 0);
+    V8TRYCATCH_VOID(Node*, cppValue, V8Node::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     TestImplements::setImplementsRuntimeEnabledNodeAttribute(imp, WTF::getPtr(cppValue));
 }
 
@@ -388,7 +388,7 @@ static void implementsPerContextEnabledNodeAttributeAttributeSetter(v8::Local<v8
         return;
     }
     TestInterfacePythonImplementation* imp = V8TestInterfacePython::toNative(info.Holder());
-    V8TRYCATCH_VOID(Node*, cppValue, V8Node::hasInstance(jsValue, info.GetIsolate()) ? V8Node::toNative(v8::Handle<v8::Object>::Cast(jsValue)) : 0);
+    V8TRYCATCH_VOID(Node*, cppValue, V8Node::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     TestImplements::setImplementsPerContextEnabledNodeAttribute(imp, WTF::getPtr(cppValue));
 }
 
@@ -696,7 +696,7 @@ static void voidMethodTestInterfaceEmptyArgMethod(const v8::FunctionCallbackInfo
         throwTypeError(ExceptionMessages::failedToExecute("voidMethodTestInterfaceEmptyArg", "TestInterfacePython", "parameter 1 is not of type 'TestInterfaceEmpty'."), info.GetIsolate());
         return;
     }
-    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]));
     imp->voidMethodTestInterfaceEmptyArg(testInterfaceEmptyArg);
 }
 
@@ -761,7 +761,7 @@ static void implementsComplexMethodMethod(const v8::FunctionCallbackInfo<v8::Val
         exceptionState.throwIfNeeded();
         return;
     }
-    V8TRYCATCH_VOID(TestInterfaceEmpty*, testInterfaceEmptyArg, V8TestInterfaceEmpty::hasInstance(info[1], info.GetIsolate()) ? V8TestInterfaceEmpty::toNative(v8::Handle<v8::Object>::Cast(info[1])) : 0);
+    V8TRYCATCH_VOID(TestInterfaceEmpty*, testInterfaceEmptyArg, V8TestInterfaceEmpty::toNativeWithTypeCheck(info.GetIsolate(), info[1]));
     ExecutionContext* scriptContext = currentExecutionContext(info.GetIsolate());
     RefPtr<TestInterfaceEmpty> result = TestImplements::implementsComplexMethod(scriptContext, imp, strArg, testInterfaceEmptyArg, exceptionState);
     if (exceptionState.throwIfNeeded())
@@ -1086,6 +1086,11 @@ bool V8TestInterfacePython::hasInstance(v8::Handle<v8::Value> jsValue, v8::Isola
         || V8PerIsolateData::from(isolate)->hasInstanceInNonMainWorld(&wrapperTypeInfo, jsValue);
 }
 
+TestInterfacePythonImplementation* V8TestInterfacePython::toNativeWithTypeCheck(v8::Isolate* isolate, v8::Handle<v8::Value> value)
+{
+    return hasInstance(value, isolate) ? fromInternalPointer(v8::Handle<v8::Object>::Cast(value)->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex)) : 0;
+}
+
 void V8TestInterfacePython::installPerContextEnabledProperties(v8::Handle<v8::Object> instanceTemplate, TestInterfacePythonImplementation* impl, v8::Isolate* isolate)
 {
     v8::Local<v8::Object> prototypeTemplate = v8::Local<v8::Object>::Cast(instanceTemplate->GetPrototype());