/*

 *

 * Copyright (c) 1994

 * Hewlett-Packard Company

 *

 * Copyright (c) 1996,1997

 * Silicon Graphics Computer Systems, Inc.

 *

 * Copyright (c) 1997

 * Moscow Center for SPARC Technology

 *

 * Copyright (c) 1999 

 * Boris Fomitchev

 *

 * This material is provided "as is", with absolutely no warranty expressed

 * or implied. Any use is at your own risk.

 *

 * Permission to use or copy this software for any purpose is hereby granted 

 * without fee, provided the above notices are retained on all copies.

 * Permission to modify the code and to distribute modified code is granted,

 * provided the above notices are retained, and a notice that the code was

 * modified is included with the above copyright notice.

 *

 */

/* NOTE: This is an internal header file, included by other STL headers.

 *   You should not attempt to use it directly.

 */

#ifndef _STLP_INTERNAL_STACK_H

#define _STLP_INTERNAL_STACK_H

#ifndef _STLP_INTERNAL_DEQUE_H

# include <stl/_deque.h>

#endif

_STLP_BEGIN_NAMESPACE

# if !defined ( _STLP_LIMITED_DEFAULT_TEMPLATES )

template <class _Tp, class _Sequence = deque<_Tp> >

# elif defined ( _STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS )

# define _STLP_STACK_ARGS _Tp

template <class _Tp>

# else

template <class _Tp, class _Sequence>

# endif

class stack {

# ifdef _STLP_STACK_ARGS 

  typedef deque<_Tp> _Sequence;

# endif

public:

  typedef typename _Sequence::value_type      value_type;

  typedef typename _Sequence::size_type       size_type;

  typedef          _Sequence                  container_type;

  typedef typename _Sequence::reference       reference;

  typedef typename _Sequence::const_reference const_reference;

protected:

  _Sequence c;

public:

  stack() : c() {}

  explicit stack(const _Sequence& __s) : c(__s) {}

  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(); }

  const _Sequence& _Get_c() const { return c; }

};

# ifndef _STLP_STACK_ARGS

#  define _STLP_STACK_ARGS _Tp, _Sequence

#  define _STLP_STACK_HEADER_ARGS class _Tp, class _Sequence

# else

#  define _STLP_STACK_HEADER_ARGS class _Tp

# endif

template < _STLP_STACK_HEADER_ARGS >

inline bool _STLP_CALL  operator==(const stack< _STLP_STACK_ARGS >& __x, const stack< _STLP_STACK_ARGS >& __y)

{

  return __x._Get_c() == __y._Get_c();

}

template < _STLP_STACK_HEADER_ARGS >

inline bool _STLP_CALL  operator<(const stack< _STLP_STACK_ARGS >& __x, const stack< _STLP_STACK_ARGS >& __y)

{

  return __x._Get_c() < __y._Get_c();

}

_STLP_RELOPS_OPERATORS(template < _STLP_STACK_HEADER_ARGS >, stack< _STLP_STACK_ARGS >)

_STLP_END_NAMESPACE

#  undef _STLP_STACK_ARGS

#  undef _STLP_STACK_HEADER_ARGS

#endif /* _STLP_INTERNAL_STACK_H */

// Local Variables:

// mode:C++

// End: