src/builtins/reflect.tq

// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

namespace reflect {

  const kCalledOnNonObject: constexpr MessageTemplate
  generates 'MessageTemplate::kCalledOnNonObject';

  // ES6 section 26.1.10 Reflect.isExtensible
  transitioning javascript builtin ReflectIsExtensible(
      js-implicit context: Context)(_receiver: Object, object: Object): Object {
    const objectJSReceiver = Cast<JSReceiver>(object)
        otherwise ThrowTypeError(kCalledOnNonObject, 'Reflect.isExtensible');
    return object::ObjectIsExtensible(objectJSReceiver);
  }

  // ES6 section 26.1.12 Reflect.preventExtensions
  transitioning javascript builtin ReflectPreventExtensions(
      js-implicit context: Context)(_receiver: Object, object: Object): Object {
    const objectJSReceiver = Cast<JSReceiver>(object)
        otherwise ThrowTypeError(kCalledOnNonObject, 'Reflect.preventExtensions');
    return object::ObjectPreventExtensionsDontThrow(objectJSReceiver);
  }

  // ES6 section 26.1.8 Reflect.getPrototypeOf
  transitioning javascript builtin ReflectGetPrototypeOf(
      js-implicit context: Context)(_receiver: Object, object: Object): Object {
    const objectJSReceiver = Cast<JSReceiver>(object)
        otherwise ThrowTypeError(kCalledOnNonObject, 'Reflect.getPrototypeOf');
    return object::JSReceiverGetPrototypeOf(objectJSReceiver);
  }

  // ES6 section 26.1.14 Reflect.setPrototypeOf
  transitioning javascript builtin ReflectSetPrototypeOf(
      js-implicit context:
          Context)(_receiver: Object, object: Object, proto: Object): Object {
    const objectJSReceiver = Cast<JSReceiver>(object)
        otherwise ThrowTypeError(kCalledOnNonObject, 'Reflect.setPrototypeOf');
    if (proto == Null || Is<JSReceiver>(proto)) {
      return object::ObjectSetPrototypeOfDontThrow(objectJSReceiver, proto);
    }
    ThrowTypeError(kProtoObjectOrNull, proto);
  }
}  // namespace reflect