// -*- C++ -*-
/***************************************************************************
 *
 * stack - Declaration for the Standard Library stack class
 *
 * $Id$
 *
 ***************************************************************************
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 ***************************************************************************
 *
 * Copyright (c) 1994-2001 Rogue Wave Software, Inc.  All Rights Reserved.
 *
 * This computer software is owned by Rogue Wave Software, Inc. and is
 * protected by U.S. copyright laws and other laws and by international
 * treaties.  This computer software is furnished by Rogue Wave Software,
 * Inc. pursuant to a written license agreement and may be used, copied,
 * transmitted, and stored only in accordance with the terms of such
 * license and with the inclusion of the above copyright notice.  This
 * computer software or any other copies thereof may not be provided or
 * otherwise made available to any other person.
 *
 * U.S. Government Restricted Rights.  This computer software is provided
 * with Restricted Rights.  Use, duplication, or disclosure by the
 * Government is subject to restrictions as set forth in subparagraph (c)
 * (1) (ii) of The Rights in Technical Data and Computer Software clause
 * at DFARS 252.227-7013 or subparagraphs (c) (1) and (2) of the
 * Commercial Computer Software--Restricted Rights at 48 CFR 52.227-19,
 * as applicable.  Manufacturer is Rogue Wave Software, Inc., 5500
 * Flatiron Parkway, Boulder, Colorado 80301 USA.
 *
 **************************************************************************/

#ifndef _RWSTD_STACK_INCLUDED
#define _RWSTD_STACK_INCLUDED

#include <deque>
#include <rw/_defs.h>


_RWSTD_NAMESPACE_BEGIN (std)


template <class _TypeT,
          class _Container _RWSTD_COMPLEX_DEFAULT (deque<_TypeT>) > 
class stack;


template <class _TypeT, class _Container>
inline bool operator==(const stack<_TypeT, _Container>&, 
                       const stack<_TypeT, _Container>&);

template <class _TypeT, class _Container>
inline bool operator<(const stack<_TypeT, _Container>&, 
                      const stack<_TypeT, _Container>&);

template <class _TypeT, class _Container>
class stack
{
    friend bool _RWSTD_SPECIALIZED_FRIEND (operator==)
        (const stack&, const stack&);

    friend bool _RWSTD_SPECIALIZED_FRIEND (operator<)
        (const stack&, const stack&);

public:
    
    typedef _Container                                container_type;
    typedef _TYPENAME container_type::value_type      value_type;
    typedef _TYPENAME container_type::size_type       size_type;
    typedef _TYPENAME container_type::reference       reference;
    typedef _TYPENAME container_type::const_reference const_reference;

protected:
    
    container_type c;

public:
    _EXPLICIT
    stack (const container_type &__c _RWSTD_DEFAULT_ARG (container_type())) 
        : c (__c) { }

#ifdef _RWSTD_NO_DEFAULT_TEMPLATE_ARGS    
    stack () : c (container_type ()) { }
#endif

    bool empty () const {
        return c.empty();
    }

    size_type size () const {
        return c.size ();
    }

    reference top () {
        return c.back ();
    }

    const_reference top () const {
        return c.back();
    }

    void push (const value_type& __x) {
        c.push_back (__x);
    }

    void pop () {
        c.pop_back ();
    }
};


template <class _TypeT, class _Container>
inline bool operator== (const stack<_TypeT, _Container>& __x, 
                        const stack<_TypeT, _Container>& __y)
{
    return __x.c == __y.c;
}

template <class _TypeT, class _Container>
inline bool operator< (const stack<_TypeT, _Container>& __x, 
                       const stack<_TypeT, _Container>& __y)
{
    return __x.c < __y.c;
}

template <class _TypeT, class _Container>
inline bool operator!= (const stack<_TypeT, _Container>& __x, 
                        const stack<_TypeT, _Container>& __y)
{
    return !(__x == __y);
}

template <class _TypeT, class _Container>
inline bool operator> (const stack<_TypeT, _Container>& __x, 
                       const stack<_TypeT, _Container>& __y)
{
    return __y < __x;
}

template <class _TypeT, class _Container>
inline bool operator>= (const stack<_TypeT, _Container>& __x, 
                        const stack<_TypeT, _Container>& __y)
{
    return !(__x < __y);
}

template <class _TypeT, class _Container>
inline bool operator<= (const stack<_TypeT, _Container>& __x, 
                        const stack<_TypeT, _Container>& __y)
{
    return !(__y <  __x);
}


_RWSTD_NAMESPACE_END   // std

#endif   // _RWSTD_STACK_INCLUDED

