1 // Stack implementation -*- C++ -*-
3 // Copyright (C) 2001 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 2, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING. If not, write to the Free
18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
21 // As a special exception, you may use this file as part of a free software
22 // library without restriction. Specifically, if other files instantiate
23 // templates or use macros or inline functions from this file, or you compile
24 // this file and link it with other files to produce an executable, this
25 // file does not by itself cause the resulting executable to be covered by
26 // the GNU General Public License. This exception does not however
27 // invalidate any other reasons why the executable file might be covered by
28 // the GNU General Public License.
33 * Hewlett-Packard Company
35 * Permission to use, copy, modify, distribute and sell this software
36 * and its documentation for any purpose is hereby granted without fee,
37 * provided that the above copyright notice appear in all copies and
38 * that both that copyright notice and this permission notice appear
39 * in supporting documentation. Hewlett-Packard Company makes no
40 * representations about the suitability of this software for any
41 * purpose. It is provided "as is" without express or implied warranty.
44 * Copyright (c) 1996,1997
45 * Silicon Graphics Computer Systems, Inc.
47 * Permission to use, copy, modify, distribute and sell this software
48 * and its documentation for any purpose is hereby granted without fee,
49 * provided that the above copyright notice appear in all copies and
50 * that both that copyright notice and this permission notice appear
51 * in supporting documentation. Silicon Graphics makes no
52 * representations about the suitability of this software for any
53 * purpose. It is provided "as is" without express or implied warranty.
56 /* NOTE: This is an internal header file, included by other STL headers.
57 * You should not attempt to use it directly.
60 #ifndef __SGI_STL_INTERNAL_STACK_H
61 #define __SGI_STL_INTERNAL_STACK_H
63 #include <bits/concept_check.h>
68 // Forward declarations of operators == and <, needed for friend declaration.
71 class _Sequence
= deque
<_Tp
> >
74 template <class _Tp
, class _Seq
>
75 bool operator==(const stack
<_Tp
,_Seq
>& __x
, const stack
<_Tp
,_Seq
>& __y
);
77 template <class _Tp
, class _Seq
>
78 bool operator<(const stack
<_Tp
,_Seq
>& __x
, const stack
<_Tp
,_Seq
>& __y
);
81 template <class _Tp
, class _Sequence
>
84 // concept requirements
85 __glibcpp_class_requires(_Tp
, _SGIAssignableConcept
)
86 __glibcpp_class_requires(_Sequence
, _BackInsertionSequenceConcept
)
87 typedef typename
_Sequence::value_type _Sequence_value_type
;
88 __glibcpp_class_requires2(_Tp
, _Sequence_value_type
, _SameTypeConcept
);
90 template <class _Tp1
, class _Seq1
>
91 friend bool operator== (const stack
<_Tp1
, _Seq1
>&,
92 const stack
<_Tp1
, _Seq1
>&);
93 template <class _Tp1
, class _Seq1
>
94 friend bool operator< (const stack
<_Tp1
, _Seq1
>&,
95 const stack
<_Tp1
, _Seq1
>&);
97 typedef typename
_Sequence::value_type value_type
;
98 typedef typename
_Sequence::size_type size_type
;
99 typedef _Sequence container_type
;
101 typedef typename
_Sequence::reference reference
;
102 typedef typename
_Sequence::const_reference const_reference
;
107 explicit stack(const _Sequence
& __s
) : c(__s
) {}
109 bool empty() const { return c
.empty(); }
110 size_type
size() const { return c
.size(); }
111 reference
top() { return c
.back(); }
112 const_reference
top() const { return c
.back(); }
113 void push(const value_type
& __x
) { c
.push_back(__x
); }
114 void pop() { c
.pop_back(); }
117 template <class _Tp
, class _Seq
>
118 bool operator==(const stack
<_Tp
,_Seq
>& __x
, const stack
<_Tp
,_Seq
>& __y
)
120 return __x
.c
== __y
.c
;
123 template <class _Tp
, class _Seq
>
124 bool operator<(const stack
<_Tp
,_Seq
>& __x
, const stack
<_Tp
,_Seq
>& __y
)
126 return __x
.c
< __y
.c
;
129 template <class _Tp
, class _Seq
>
130 bool operator!=(const stack
<_Tp
,_Seq
>& __x
, const stack
<_Tp
,_Seq
>& __y
)
132 return !(__x
== __y
);
135 template <class _Tp
, class _Seq
>
136 bool operator>(const stack
<_Tp
,_Seq
>& __x
, const stack
<_Tp
,_Seq
>& __y
)
141 template <class _Tp
, class _Seq
>
142 bool operator<=(const stack
<_Tp
,_Seq
>& __x
, const stack
<_Tp
,_Seq
>& __y
)
147 template <class _Tp
, class _Seq
>
148 bool operator>=(const stack
<_Tp
,_Seq
>& __x
, const stack
<_Tp
,_Seq
>& __y
)
155 #endif /* __SGI_STL_INTERNAL_STACK_H */