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, 2006, 2007, 2008, 2009 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 GetterSetter_h

    24 #define GetterSetter_h

    25 

    26 #include "JSCell.h"

    27 

    28 #include "CallFrame.h"

    29 

    30 namespace JSC {

    31 

    32     class JSObject;

    33 

    34     // This is an internal value object which stores getter and setter functions

    35     // for a property.

    36     class GetterSetter : public JSCell {

    37         friend class JIT;

    38     public:

    39         GetterSetter(ExecState* exec)

    40             : JSCell(exec->globalData().getterSetterStructure.get())

    41             , m_getter(0)

    42             , m_setter(0)

    43         {

    44         }

    45 

    46         virtual void markChildren(MarkStack&);

    47 

    48         JSObject* getter() const { return m_getter; }

    49         void setGetter(JSObject* getter) { m_getter = getter; }

    50         JSObject* setter() const { return m_setter; }

    51         void setSetter(JSObject* setter) { m_setter = setter; }

    52         static PassRefPtr<Structure> createStructure(JSValue prototype)

    53         {

    54             return Structure::create(prototype, TypeInfo(GetterSetterType, OverridesMarkChildren), AnonymousSlotCount);

    55         }

    56     private:

    57         virtual bool isGetterSetter() const;

    58 

    59         JSObject* m_getter;

    60         JSObject* m_setter;  

    61     };

    62 

    63     GetterSetter* asGetterSetter(JSValue);

    64 

    65     inline GetterSetter* asGetterSetter(JSValue value)

    66     {

    67         ASSERT(asCell(value)->isGetterSetter());

    68         return static_cast<GetterSetter*>(asCell(value));

    69     }

    70 

    71 

    72 } // namespace JSC

    73 

    74 #endif // GetterSetter_h