1  /*
 2   * Copyright (C) 2010 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. AND ITS CONTRIBUTORS ``AS IS''
14   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23   * THE POSSIBILITY OF SUCH DAMAGE.
24   */
25  
26  #include "config.h"
27  #include "JSWeakObjectMapRefPrivate.h"
28  
29  #include "APICast.h"
30  #include "JSCallbackObject.h"
31  #include "JSWeakObjectMapRefInternal.h"
32  #include "WeakGCMapInlines.h"
33  
34  using namespace JSC;
35  
36  #ifdef __cplusplus
37  extern "C" {
38  #endif
39  
40  JSWeakObjectMapRef JSWeakObjectMapCreate(JSContextRef context, void* privateData, JSWeakMapDestroyedCallback callback)
41  {
42      JSGlobalObject* globalObject = toJS(context);
43      VM& vm = globalObject->vm();
44      JSLockHolder locker(vm);
45      auto map = OpaqueJSWeakObjectMap::create(vm, privateData, callback);
46      globalObject->registerWeakMap(map.ptr());
47      return map.ptr();
48  }
49  
50  void JSWeakObjectMapSet(JSContextRef ctx, JSWeakObjectMapRef map, void* key, JSObjectRef object)
51  {
52      if (!ctx) {
53          ASSERT_NOT_REACHED();
54          return;
55      }
56      JSGlobalObject* globalObject = toJS(ctx);
57      VM& vm = globalObject->vm();
58      JSLockHolder locker(vm);
59      JSObject* obj = toJS(object);
60      if (!obj)
61          return;
62      ASSERT(obj->inherits<JSProxy>(vm)
63          || obj->inherits<JSCallbackObject<JSGlobalObject>>(vm)
64          || obj->inherits<JSCallbackObject<JSNonFinalObject>>(vm));
65      map->map().set(key, obj);
66  }
67  
68  JSObjectRef JSWeakObjectMapGet(JSContextRef ctx, JSWeakObjectMapRef map, void* key)
69  {
70      if (!ctx) {
71          ASSERT_NOT_REACHED();
72          return nullptr;
73      }
74      JSGlobalObject* globalObject = toJS(ctx);
75      JSLockHolder locker(globalObject);
76      return toRef(jsCast<JSObject*>(map->map().get(key)));
77  }
78  
79  void JSWeakObjectMapRemove(JSContextRef ctx, JSWeakObjectMapRef map, void* key)
80  {
81      if (!ctx) {
82          ASSERT_NOT_REACHED();
83          return;
84      }
85      JSGlobalObject* globalObject = toJS(ctx);
86      JSLockHolder locker(globalObject);
87      map->map().remove(key);
88  }
89  
90  // We need to keep this function in the build to keep the nightlies running.
91  JS_EXPORT bool JSWeakObjectMapClear(JSContextRef, JSWeakObjectMapRef, void*, JSObjectRef);
92  bool JSWeakObjectMapClear(JSContextRef, JSWeakObjectMapRef, void*, JSObjectRef)
93  {
94      return true;
95  }
96  
97  #ifdef __cplusplus
98  }
99  #endif