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 "JSCJSValue.h"
  31 #include "JSCallbackObject.h"
  32 #include "JSWeakObjectMapRefInternal.h"
  33 #include "JSCInlines.h"
  34 #include "Weak.h"
  35 #include <wtf/HashMap.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     JSLockHolder locker(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     if (!ctx) {
  57         ASSERT_NOT_REACHED();
  58         return;
  59     }
  60     ExecState* exec = toJS(ctx);
  61     JSLockHolder locker(exec);
  62     JSObject* obj = toJS(object);
  63     if (!obj)
  64         return;
  65     ASSERT(obj->inherits(JSProxy::info())
  66         || obj->inherits(JSCallbackObject<JSGlobalObject>::info())
  67         || obj->inherits(JSCallbackObject<JSDestructibleObject>::info()));
  68     map->map().set(key, obj);
  69 }
  70
  71 JSObjectRef JSWeakObjectMapGet(JSContextRef ctx, JSWeakObjectMapRef map, void* key)
  72 {
  73     if (!ctx) {
  74         ASSERT_NOT_REACHED();
  75         return 0;
  76     }
  77     ExecState* exec = toJS(ctx);
  78     JSLockHolder locker(exec);
  79     return toRef(jsCast<JSObject*>(map->map().get(key)));
  80 }
  81
  82 void JSWeakObjectMapRemove(JSContextRef ctx, JSWeakObjectMapRef map, void* key)
  83 {
  84     if (!ctx) {
  85         ASSERT_NOT_REACHED();
  86         return;
  87     }
  88     ExecState* exec = toJS(ctx);
  89     JSLockHolder locker(exec);
  90     map->map().remove(key);
  91 }
  92
  93 // We need to keep this function in the build to keep the nightlies running.
  94 JS_EXPORT bool JSWeakObjectMapClear(JSContextRef, JSWeakObjectMapRef, void*, JSObjectRef);
  95 bool JSWeakObjectMapClear(JSContextRef, JSWeakObjectMapRef, void*, JSObjectRef)
  96 {
  97     return true;
  98 }
  99
 100 #ifdef __cplusplus
 101 }
 102 #endif