API/JSWeakObjectMapRefPrivate.cpp

   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 "APIShims.h"
  31 #include "JSCallbackObject.h"
  32 #include "JSValue.h"
  33 #include "JSWeakObjectMapRefInternal.h"
  34 #include <wtf/HashMap.h>
  35 #include <wtf/RefCounted.h>
  36 #include <wtf/text/StringHash.h>
  37
  38 using namespace WTF;
  39 using namespace JSC;
  40
  41 #ifdef __cplusplus
  42 extern "C" {
  43 #endif
  44
  45 JSWeakObjectMapRef JSWeakObjectMapCreate(JSContextRef context, void* privateData, JSWeakMapDestroyedCallback callback)
  46 {
  47     ExecState* exec = toJS(context);
  48     APIEntryShim entryShim(exec);
  49     RefPtr<OpaqueJSWeakObjectMap> map = OpaqueJSWeakObjectMap::create(privateData, callback);
  50     exec->lexicalGlobalObject()->registerWeakMap(map.get());
  51     return map.get();
  52 }
  53
  54 void JSWeakObjectMapSet(JSContextRef ctx, JSWeakObjectMapRef map, void* key, JSObjectRef object)
  55 {
  56     ExecState* exec = toJS(ctx);
  57     APIEntryShim entryShim(exec);
  58     JSObject* obj = toJS(object);
  59     if (!obj)
  60         return;
  61     ASSERT(obj->inherits(&JSCallbackObject<JSGlobalObject>::info) || obj->inherits(&JSCallbackObject<JSObject>::info));
  62     map->map().set(key, obj);
  63 }
  64
  65 JSObjectRef JSWeakObjectMapGet(JSContextRef ctx, JSWeakObjectMapRef map, void* key)
  66 {
  67     ExecState* exec = toJS(ctx);
  68     APIEntryShim entryShim(exec);
  69     return toRef(static_cast<JSObject*>(map->map().get(key)));
  70 }
  71
  72 bool JSWeakObjectMapClear(JSContextRef ctx, JSWeakObjectMapRef map, void* key, JSObjectRef object)
  73 {
  74     ExecState* exec = toJS(ctx);
  75     APIEntryShim entryShim(exec);
  76     JSObject* obj = toJS(object);
  77     if (map->map().uncheckedRemove(key, obj))
  78         return true;
  79     return false;
  80 }
  81
  82 #ifdef __cplusplus
  83 }
  84 #endif