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 "WeakGCMapInlines.h"
  36 #include <wtf/HashMap.h>
  37 #include <wtf/text/StringHash.h>
  38
  39 using namespace WTF;
  40 using namespace JSC;
  41
  42 #ifdef __cplusplus
  43 extern "C" {
  44 #endif
  45
  46 JSWeakObjectMapRef JSWeakObjectMapCreate(JSContextRef context, void* privateData, JSWeakMapDestroyedCallback callback)
  47 {
  48     ExecState* exec = toJS(context);
  49     JSLockHolder locker(exec);
  50     RefPtr<OpaqueJSWeakObjectMap> map = OpaqueJSWeakObjectMap::create(exec->vm(), privateData, callback);
  51     exec->lexicalGlobalObject()->registerWeakMap(map.get());
  52     return map.get();
  53 }
  54
  55 void JSWeakObjectMapSet(JSContextRef ctx, JSWeakObjectMapRef map, void* key, JSObjectRef object)
  56 {
  57     if (!ctx) {
  58         ASSERT_NOT_REACHED();
  59         return;
  60     }
  61     ExecState* exec = toJS(ctx);
  62     JSLockHolder locker(exec);
  63     JSObject* obj = toJS(object);
  64     if (!obj)
  65         return;
  66     ASSERT(obj->inherits(JSProxy::info())
  67         || obj->inherits(JSCallbackObject<JSGlobalObject>::info())
  68         || obj->inherits(JSCallbackObject<JSDestructibleObject>::info()));
  69     map->map().set(key, obj);
  70 }
  71
  72 JSObjectRef JSWeakObjectMapGet(JSContextRef ctx, JSWeakObjectMapRef map, void* key)
  73 {
  74     if (!ctx) {
  75         ASSERT_NOT_REACHED();
  76         return 0;
  77     }
  78     ExecState* exec = toJS(ctx);
  79     JSLockHolder locker(exec);
  80     return toRef(jsCast<JSObject*>(map->map().get(key)));
  81 }
  82
  83 void JSWeakObjectMapRemove(JSContextRef ctx, JSWeakObjectMapRef map, void* key)
  84 {
  85     if (!ctx) {
  86         ASSERT_NOT_REACHED();
  87         return;
  88     }
  89     ExecState* exec = toJS(ctx);
  90     JSLockHolder locker(exec);
  91     map->map().remove(key);
  92 }
  93
  94 // We need to keep this function in the build to keep the nightlies running.
  95 JS_EXPORT bool JSWeakObjectMapClear(JSContextRef, JSWeakObjectMapRef, void*, JSObjectRef);
  96 bool JSWeakObjectMapClear(JSContextRef, JSWeakObjectMapRef, void*, JSObjectRef)
  97 {
  98     return true;
  99 }
 100
 101 #ifdef __cplusplus
 102 }
 103 #endif