/*

  *

  * 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: