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/*
* $Id: Stack.h,v 1.18 2004/12/20 16:30:29 robertc Exp $
*
* AUTHOR: Alex Rousskov
*
* SQUID Web Proxy Cache http://www.squid-cache.org/
* ----------------------------------------------------------
*
* Squid is the result of efforts by numerous individuals from
* the Internet community; see the CONTRIBUTORS file for full
* details. Many organizations have provided support for Squid's
* development; see the SPONSORS file for full details. Squid is
* Copyrighted (C) 2001 by the Regents of the University of
* California; see the COPYRIGHT file for full details. Squid
* incorporates software developed and/or copyrighted by other
* sources; see the CREDITS file for full details.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
*/
#ifndef SQUID_STACK_H
#define SQUID_STACK_H
#include "Array.h"
/* RBC: 20030714 Composition might be better long-term, but for now,
* there's no reason to do so.
*/
template <class S = void *>
class Stack : public Vector<S>
{
public:
using Vector<S>::count;
using Vector<S>::items;
typedef typename Vector<S>::value_type value_type;
typedef typename Vector<S>::pointer pointer;
value_type pop()
{
if (!count)
return value_type();
value_type result = items[--count];
this->items[count] = value_type();
return result;
}
/* todo, fatal on empty Top call */
value_type top() const
{
return count ? items[count - 1] : value_type();
}
};
#endif /* SQUID_STACK_H */
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