runtime/JSAPIValueWrapper.h

   1 /*
   2  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
   4  *  Copyright (C) 2003, 2004, 2005, 2007, 2008 Apple Inc. All rights reserved.
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Library General Public
   8  *  License as published by the Free Software Foundation; either
   9  *  version 2 of the License, or (at your option) any later version.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Library General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Library General Public License
  17  *  along with this library; see the file COPYING.LIB.  If not, write to
  18  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #ifndef JSAPIValueWrapper_h
  24 #define JSAPIValueWrapper_h
  25
  26 #include "JSCell.h"
  27 #include "CallFrame.h"
  28 #include "Structure.h"
  29
  30 namespace JSC {
  31
  32     class JSAPIValueWrapper : public JSCell {
  33         friend JSValue jsAPIValueWrapper(ExecState*, JSValue);
  34     public:
  35         JSValue value() const { return m_value.get(); }
  36
  37         virtual bool isAPIValueWrapper() const { return true; }
  38
  39         static Structure* createStructure(JSGlobalData& globalData, JSValue prototype)
  40         {
  41             return Structure::create(globalData, prototype, TypeInfo(CompoundType, OverridesVisitChildren | OverridesGetPropertyNames), AnonymousSlotCount, &s_info);
  42         }
  43
  44         static const ClassInfo s_info;
  45
  46     private:
  47         JSAPIValueWrapper(ExecState* exec, JSValue value)
  48             : JSCell(exec->globalData(), exec->globalData().apiWrapperStructure.get())
  49         {
  50             m_value.set(exec->globalData(), this, value);
  51             ASSERT(!value.isCell());
  52         }
  53
  54         WriteBarrier<Unknown> m_value;
  55     };
  56
  57     inline JSValue jsAPIValueWrapper(ExecState* exec, JSValue value)
  58     {
  59         return new (exec) JSAPIValueWrapper(exec, value);
  60     }
  61
  62 } // namespace JSC
  63
  64 #endif // JSAPIValueWrapper_h