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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: JSAny, newTarget: JSAny)(target: JSAny, handler: JSAny): 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); } } }