C++ (Cpp) checkProtoSetterAccessAllowed 예제들

예제 #1

파일: ReflectObject.cpp 프로젝트: emutavchi/WebKitForWayland

// https://tc39.github.io/ecma262/#sec-reflect.setprototypeof
EncodedJSValue JSC_HOST_CALL reflectObjectSetPrototypeOf(ExecState* exec)
{
    JSValue target = exec->argument(0);
    if (!target.isObject())
        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.setPrototypeOf requires the first argument be an object")));
    JSValue proto = exec->argument(1);
    if (!proto.isObject() && !proto.isNull())
        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.setPrototypeOf requires the second argument be either an object or null")));

    JSObject* object = asObject(target);

    if (!checkProtoSetterAccessAllowed(exec, object))
        return JSValue::encode(jsBoolean(false));

    VM& vm = exec->vm();
    bool shouldThrowIfCantSet = false;
    bool didSetPrototype = object->setPrototype(vm, exec, proto, shouldThrowIfCantSet);
    if (vm.exception())
        return JSValue::encode(JSValue());
    return JSValue::encode(jsBoolean(didSetPrototype));
}

예제 #2

파일: ReflectObject.cpp 프로젝트: nickooms/webkit

// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.setprototypeof
EncodedJSValue JSC_HOST_CALL reflectObjectSetPrototypeOf(ExecState* exec)
{
    JSValue target = exec->argument(0);
    if (!target.isObject())
        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.setPrototypeOf requires the first argument be an object")));
    JSValue proto = exec->argument(1);
    if (!proto.isObject() && !proto.isNull())
        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.setPrototypeOf requires the second argument be either an object or null")));

    JSObject* object = asObject(target);

    if (!checkProtoSetterAccessAllowed(exec, object))
        return JSValue::encode(jsBoolean(false));

    if (object->prototype() == proto)
        return JSValue::encode(jsBoolean(true));

    if (!object->isExtensible())
        return JSValue::encode(jsBoolean(false));

    return JSValue::encode(jsBoolean(object->setPrototypeWithCycleCheck(exec, proto)));
}