luaObjRef.h

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/************************************************************************
**
** Copyright (C) 2009 K2FS Sistemas e Projetos Ltd.  
** All rights reserved.
**
************************************************************************/
 
#ifndef _LUAOBJREF_H_
#define _LUAOBJREF_H_
 
 
#include "luaEnv.h"
 
class LUAUTILS_API_EXPORT LuaObjRef
{
public:
  LuaObjRef();
  LuaObjRef(const LuaObjRef& other);
  LuaObjRef(LuaEnv* lua, int index, bool ref = false);
  ~LuaObjRef();
 
  LuaObjRef& operator=(const LuaObjRef&);
 
  void makeRef();
 
  int ref() const { return _ref; }
 
  void push() const;
  
  bool isValid() const { return _lua != NULL; }
 
  LuaEnv* env() const { return _lua; }
 
  void adjustStackIndex(int offset);
 
protected:
  int objectPos();
  
  LuaEnv* _lua;          
  int     _stackIndex;   
  int     _ref;          
 
};
 
#endif