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// 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.
#include 'src/builtins/builtins-proxy-gen.h'
namespace proxy {
// ES #sec-proxy-constructor
// https://tc39.github.io/ecma262/#sec-proxy-constructor
transitioning javascript builtin
ProxyConstructor(
js-implicit context: Context, receiver: Object,
newTarget: Object)(target: Object, handler: Object): JSProxy {
try {
// 1. If NewTarget is undefined, throw a TypeError exception.
if (newTarget == Undefined) {
ThrowTypeError(kConstructorNotFunction, 'Proxy');
}
// 2. Return ? ProxyCreate(target, handler).
// https://tc39.github.io/ecma262/#sec-proxycreate
// 1. If Type(target) is not Object, throw a TypeError exception.
// 2. If target is a Proxy exotic object and target.[[ProxyHandler]] is
// null, throw a TypeError exception.
// 3. If Type(handler) is not Object, throw a TypeError exception.
// 4. If handler is a Proxy exotic object and handler.[[ProxyHandler]]
// is null, throw a TypeError exception.
const targetJSReceiver =
Cast<JSReceiver>(target) otherwise ThrowProxyNonObject;
if (IsRevokedProxy(targetJSReceiver)) {
goto ThrowProxyHandlerOrTargetRevoked;
}
const handlerJSReceiver =
Cast<JSReceiver>(handler) otherwise ThrowProxyNonObject;
if (IsRevokedProxy(handlerJSReceiver)) {
goto ThrowProxyHandlerOrTargetRevoked;
}
// 5. Let P be a newly created object.
// 6. Set P's essential internal methods (except for [[Call]] and
// [[Construct]]) to the definitions specified in 9.5.
// 7. If IsCallable(target) is true, then
// a. Set P.[[Call]] as specified in 9.5.12.
// b. If IsConstructor(target) is true, then
// 1. Set P.[[Construct]] as specified in 9.5.13.
// 8. Set P.[[ProxyTarget]] to target.
// 9. Set P.[[ProxyHandler]] to handler.
// 10. Return P.
return AllocateProxy(targetJSReceiver, handlerJSReceiver);
}
label ThrowProxyNonObject deferred {
ThrowTypeError(kProxyNonObject);
}
label ThrowProxyHandlerOrTargetRevoked deferred {
ThrowTypeError(kProxyHandlerOrTargetRevoked);
}
}
}
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