runtime/GetterSetter.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, 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