1  /*
 2   * Copyright (C) 2016 Apple Inc. All Rights Reserved.
 3   *
 4   * Redistribution and use in source and binary forms, with or without
 5   * modification, are permitted provided that the following conditions
 6   * are met:
 7   * 1. Redistributions of source code must retain the above copyright
 8   *    notice, this list of conditions and the following disclaimer.
 9   * 2. Redistributions in binary form must reproduce the above copyright
10   *    notice, this list of conditions and the following disclaimer in the
11   *    documentation and/or other materials provided with the distribution.
12   *
13   * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24   */
25  
26  #include "config.h"
27  #include "ProxyRevoke.h"
28  
29  #include "JSCInlines.h"
30  #include "ProxyObject.h"
31  
32  namespace JSC {
33  
34  STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ProxyRevoke);
35  
36  const ClassInfo ProxyRevoke::s_info = { "ProxyRevoke", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(ProxyRevoke) };
37  
38  ProxyRevoke* ProxyRevoke::create(VM& vm, Structure* structure, ProxyObject* proxy)
39  {
40      ProxyRevoke* revoke = new (NotNull, allocateCell<ProxyRevoke>(vm.heap)) ProxyRevoke(vm, structure);
41      revoke->finishCreation(vm, proxy);
42      return revoke;
43  }
44  
45  static JSC_DECLARE_HOST_FUNCTION(performProxyRevoke);
46  
47  ProxyRevoke::ProxyRevoke(VM& vm, Structure* structure)
48      : Base(vm, structure, performProxyRevoke, nullptr)
49  {
50  }
51  
52  void ProxyRevoke::finishCreation(VM& vm, ProxyObject* proxy)
53  {
54      Base::finishCreation(vm, 0, emptyString());
55      m_proxy.set(vm, this, proxy);
56  }
57  
58  JSC_DEFINE_HOST_FUNCTION(performProxyRevoke, (JSGlobalObject* globalObject, CallFrame* callFrame))
59  {
60      ProxyRevoke* proxyRevoke = jsCast<ProxyRevoke*>(callFrame->jsCallee());
61      JSValue proxyValue = proxyRevoke->proxy();
62      if (proxyValue.isNull())
63          return JSValue::encode(jsUndefined());
64  
65      ProxyObject* proxy = jsCast<ProxyObject*>(proxyValue);
66      VM& vm = globalObject->vm();
67      proxy->revoke(vm);
68      proxyRevoke->setProxyToNull(vm);
69      return JSValue::encode(jsUndefined());
70  }
71  
72  void ProxyRevoke::visitChildren(JSCell* cell, SlotVisitor& visitor)
73  {
74      ProxyRevoke* thisObject = jsCast<ProxyRevoke*>(cell);
75      ASSERT_GC_OBJECT_INHERITS(thisObject, info());
76      Base::visitChildren(thisObject, visitor);
77  
78      visitor.append(thisObject->m_proxy);
79  }
80  
81  } // namespace JSC