V8 Binding: Introduce toNativeWithTypeCheck

Source/bindings/v8/custom/V8WebGLRenderingContextCustom.cpp

 /*
  * Copyright (C) 2009 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 285 matching lines @@
         break;
     default:
         notImplemented();
         break;
     }
     v8SetReturnValue(info, toV8Object(args, info.Holder(), info.GetIsolate()));
 }
 
 static WebGLUniformLocation* toWebGLUniformLocation(v8::Handle<v8::Value> value, v8::Isolate* isolate)
 {
-    if (!V8WebGLUniformLocation::hasInstance(value, isolate))
-        return 0;
-    return V8WebGLUniformLocation::toNative(value->ToObject());
+    return V8WebGLUniformLocation::toNativeWithTypeCheck(isolate, value);
 }
 
 enum WhichProgramCall {
     kProgramParameter, kUniform
 };
 
 void V8WebGLRenderingContext::getAttachedShadersMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "getAttachedShaders", "WebGLRenderingContext", info.Holder(), info.GetIsolate());
     if (info.Length() < 1) {
         exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(1, info.Length()));
         exceptionState.throwIfNeeded();
         return;
     }
 
     const int programArgumentIndex = 0;
     WebGLRenderingContext* context = V8WebGLRenderingContext::toNative(info.Holder());
     if (info.Length() > 0 && !isUndefinedOrNull(info[programArgumentIndex]) && !V8WebGLProgram::hasInstance(info[programArgumentIndex], info.GetIsolate())) {
         exceptionState.throwTypeError(ExceptionMessages::incorrectArgumentType(programArgumentIndex + 1, "is not a WebGLProgram object."));
         exceptionState.throwIfNeeded();
         return;
     }
-    WebGLProgram* program = V8WebGLProgram::hasInstance(info[0], info.GetIsolate()) ? V8WebGLProgram::toNative(v8::Handle<v8::Object>::Cast(info[0])) : 0;
+    WebGLProgram* program = V8WebGLProgram::toNativeWithTypeCheck(info.GetIsolate(), info[programArgumentIndex]);
     Vector<RefPtr<WebGLShader> > shaders;
     bool succeed = context->getAttachedShaders(program, shaders);
     if (!succeed) {
         v8SetReturnValueNull(info);
         return;
     }
     v8::Local<v8::Array> array = v8::Array::New(info.GetIsolate(), shaders.size());
     for (size_t ii = 0; ii < shaders.size(); ++ii)
         array->Set(v8::Integer::New(info.GetIsolate(), ii), toV8(shaders[ii].get(), info.Holder(), info.GetIsolate()));
     v8SetReturnValue(info, array);
@@ skipping 66 matching lines @@
         return;
     }
 
     const int programArgumentIndex = 0;
     WebGLRenderingContext* context = V8WebGLRenderingContext::toNative(info.Holder());
     if (info.Length() > 0 && !isUndefinedOrNull(info[programArgumentIndex]) && !V8WebGLProgram::hasInstance(info[programArgumentIndex], info.GetIsolate())) {
         exceptionState.throwTypeError(ExceptionMessages::incorrectArgumentType(programArgumentIndex + 1, "is not a WebGLProgram object."));
         exceptionState.throwIfNeeded();
         return;
     }
-    WebGLProgram* program = V8WebGLProgram::hasInstance(info[0], info.GetIsolate()) ? V8WebGLProgram::toNative(v8::Handle<v8::Object>::Cast(info[0])) : 0;
+    WebGLProgram* program = V8WebGLProgram::toNativeWithTypeCheck(info.GetIsolate(), info[programArgumentIndex]);
     unsigned pname = toInt32(info[1], exceptionState);
     if (exceptionState.throwIfNeeded())
         return;
     WebGLGetInfo args = context->getProgramParameter(program, pname);
     v8SetReturnValue(info, toV8Object(args, info.Holder(), info.GetIsolate()));
 }
 
 void V8WebGLRenderingContext::getRenderbufferParameterMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "getRenderbufferParameter", "WebGLRenderingContext", info.Holder(), info.GetIsolate());
     getObjectParameter(info, kRenderbuffer, exceptionState);
 }
 
 void V8WebGLRenderingContext::getShaderParameterMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "getShaderParameter", "WebGLRenderingContext", info.Holder(), info.GetIsolate());
     if (info.Length() != 2) {
         exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(2, info.Length()));
         exceptionState.throwIfNeeded();
         return;
     }
 
     const int shaderArgumentIndex = 0;
     WebGLRenderingContext* context = V8WebGLRenderingContext::toNative(info.Holder());
     if (info.Length() > 0 && !isUndefinedOrNull(info[shaderArgumentIndex]) && !V8WebGLShader::hasInstance(info[shaderArgumentIndex], info.GetIsolate())) {
         exceptionState.throwTypeError(ExceptionMessages::incorrectArgumentType(shaderArgumentIndex + 1, "is not a WebGLShader object."));
         exceptionState.throwIfNeeded();
         return;
     }
-    WebGLShader* shader = V8WebGLShader::hasInstance(info[shaderArgumentIndex], info.GetIsolate()) ? V8WebGLShader::toNative(v8::Handle<v8::Object>::Cast(info[0])) : 0;
+    WebGLShader* shader = V8WebGLShader::toNativeWithTypeCheck(info.GetIsolate(), info[shaderArgumentIndex]);
     unsigned pname = toInt32(info[1], exceptionState);
     if (exceptionState.throwIfNeeded())
         return;
     WebGLGetInfo args = context->getShaderParameter(shader, pname);
     v8SetReturnValue(info, toV8Object(args, info.Holder(), info.GetIsolate()));
 }
 
 void V8WebGLRenderingContext::getSupportedExtensionsMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     WebGLRenderingContext* imp = V8WebGLRenderingContext::toNative(info.Holder());
@@ skipping 24 matching lines @@
         return;
     }
 
     const int programArgumentIndex = 0;
     WebGLRenderingContext* context = V8WebGLRenderingContext::toNative(info.Holder());
     if (info.Length() > 0 && !isUndefinedOrNull(info[programArgumentIndex]) && !V8WebGLProgram::hasInstance(info[programArgumentIndex], info.GetIsolate())) {
         exceptionState.throwTypeError(ExceptionMessages::incorrectArgumentType(programArgumentIndex + 1, "is not a WebGLProgram object."));
         exceptionState.throwIfNeeded();
         return;
     }
-    WebGLProgram* program = V8WebGLProgram::hasInstance(info[programArgumentIndex], info.GetIsolate()) ? V8WebGLProgram::toNative(v8::Handle<v8::Object>::Cast(info[0])) : 0;
+    WebGLProgram* program = V8WebGLProgram::toNativeWithTypeCheck(info.GetIsolate(), info[programArgumentIndex]);
 
     const int uniformArgumentIndex = 1;
     if (info.Length() > 1 && !isUndefinedOrNull(info[uniformArgumentIndex]) && !V8WebGLUniformLocation::hasInstance(info[uniformArgumentIndex], info.GetIsolate())) {
         exceptionState.throwTypeError(ExceptionMessages::incorrectArgumentType(uniformArgumentIndex + 1, "is not a WebGLUniformLocation object."));
         exceptionState.throwIfNeeded();
         return;
     }
     const int uniformLocationArgumentIndex = 1;
     WebGLUniformLocation* location = toWebGLUniformLocation(info[uniformLocationArgumentIndex], info.GetIsolate());
 
@@ skipping 336 matching lines @@
     vertexAttribAndUniformHelperf(info, kVertexAttrib3v, exceptionState);
 }
 
 void V8WebGLRenderingContext::vertexAttrib4fvMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "vertexAttrib4fv", "WebGLRenderingContext", info.Holder(), info.GetIsolate());
     vertexAttribAndUniformHelperf(info, kVertexAttrib4v, exceptionState);
 }
 
 } // namespace WebCore