//-------------------------------------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TDPtrStack Ä£°åÀà
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TDPtrStack ÉùÃ÷
// = Maintainers: 
//                  
//-------------------------------------------------------------------------------------------------------+
#ifndef _TDPTRSTACK_H_
#define _TDPTRSTACK_H_

#ifndef _TDPTRLIST_H_
#include "TDPtrList.h"
#endif

template <class R> class TDPtrStack : public TDPtrList< R >
{
public:
	TDPtrStack(int dFlag = 0);

	void  Push(R *dat);

	R * Pop();
	R * Top();
};

template<class R>
TDPtrStack<R>::TDPtrStack(int dFlag) 
: TDPtrList<R> (dFlag)
{
	
}

template<class R>
void TDPtrStack<R>::Push(R *dat) 
{
	this->MoveEnd();
	this->Insert(dat);
}

template<class R>
R* TDPtrStack<R>::Pop()
{ 
	R* res = this->Tail();
	
	if(this->tail != NULL)
	{
#ifdef SUPERLST
		this->tail = NULL;
#else
		this->tail->data = NULL;
#endif
	}
	
	if(this->Length())
	{
		this->Remove(this->Length() - 1);
	}
	return res;
}

template<class R>
R* TDPtrStack<R>::Top()
{ 
	return this->Tail(); 
}
#endif