/*
 * $Id: Stack.c,v 1.11 2001/01/12 00:37:12 wessels 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.
 *
 */

/*
 * Stack is a (void*) stack with unlimited capacity; based on Array
 */


#include "config.h"
#if HAVE_ASSERT_H
#include <assert.h>
#endif
#if HAVE_STRING_H
#include <string.h>
#endif
#include "util.h"
#include "Stack.h"


void *
stackPop(Stack * s)
{
    assert(s);
    return s->count ? s->items[--s->count] : NULL;
}

void *
stackTop(Stack * s)
{
    assert(s);
    return s->count ? s->items[s->count - 1] : NULL;
}
