deps/v8/src/builtins/proxy-revoke.tq


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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 {

// Proxy Revocation Functions
// https://tc39.github.io/ecma262/#sec-proxy-revocation-functions
transitioning javascript builtin
ProxyRevoke(js-implicit context: NativeContext)(): Undefined {
  // 1. Let p be F.[[RevocableProxy]].
  const proxyObject: Object = context[PROXY_SLOT];

  // 2. If p is null, return undefined
  if (proxyObject == Null) {
    return Undefined;
  }

  // 3. Set F.[[RevocableProxy]] to null.
  context[PROXY_SLOT] = Null;

  // 4. Assert: p is a Proxy object.
  const proxy: JSProxy = UnsafeCast<JSProxy>(proxyObject);

  // 5. Set p.[[ProxyTarget]] to null.
  proxy.target = Null;

  // 6. Set p.[[ProxyHandler]] to null.
  proxy.handler = Null;

  // 7. Return undefined.
  return Undefined;
}
}