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Diffstat (limited to 'contrib/libstdc++/include/bits/stl_stack.h')
| -rw-r--r-- | contrib/libstdc++/include/bits/stl_stack.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/contrib/libstdc++/include/bits/stl_stack.h b/contrib/libstdc++/include/bits/stl_stack.h new file mode 100644 index 0000000..0a80b10 --- /dev/null +++ b/contrib/libstdc++/include/bits/stl_stack.h @@ -0,0 +1,160 @@ +// Stack implementation -*- C++ -*- + +// Copyright (C) 2001 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library 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, or (at your option) +// any later version. + +// This library 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 library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// As a special exception, you may use this file as part of a free software +// library without restriction. Specifically, if other files instantiate +// templates or use macros or inline functions from this file, or you compile +// this file and link it with other files to produce an executable, this +// file does not by itself cause the resulting executable to be covered by +// the GNU General Public License. This exception does not however +// invalidate any other reasons why the executable file might be covered by +// the GNU General Public License. + +/* + * + * 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) 1996,1997 + * Silicon Graphics Computer Systems, Inc. + * + * 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. Silicon Graphics makes no + * representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + */ + +/** @file stl_stack.h + * This is an internal header file, included by other library headers. + * You should not attempt to use it directly. + */ + +#ifndef __GLIBCPP_INTERNAL_STACK_H +#define __GLIBCPP_INTERNAL_STACK_H + +#include <bits/concept_check.h> + +namespace std +{ + +// Forward declarations of operators == and <, needed for friend declaration. + +template <class _Tp, + class _Sequence = deque<_Tp> > +class stack; + +template <class _Tp, class _Seq> +bool operator==(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y); + +template <class _Tp, class _Seq> +bool operator<(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y); + + +template <class _Tp, class _Sequence> +class stack +{ + // concept requirements + __glibcpp_class_requires(_Tp, _SGIAssignableConcept) + __glibcpp_class_requires(_Sequence, _BackInsertionSequenceConcept) + typedef typename _Sequence::value_type _Sequence_value_type; + __glibcpp_class_requires2(_Tp, _Sequence_value_type, _SameTypeConcept); + + template <class _Tp1, class _Seq1> + friend bool operator== (const stack<_Tp1, _Seq1>&, + const stack<_Tp1, _Seq1>&); + template <class _Tp1, class _Seq1> + friend bool operator< (const stack<_Tp1, _Seq1>&, + const stack<_Tp1, _Seq1>&); +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(); } +}; + +template <class _Tp, class _Seq> +bool operator==(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y) +{ + return __x.c == __y.c; +} + +template <class _Tp, class _Seq> +bool operator<(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y) +{ + return __x.c < __y.c; +} + +template <class _Tp, class _Seq> +bool operator!=(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y) +{ + return !(__x == __y); +} + +template <class _Tp, class _Seq> +bool operator>(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y) +{ + return __y < __x; +} + +template <class _Tp, class _Seq> +bool operator<=(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y) +{ + return !(__y < __x); +} + +template <class _Tp, class _Seq> +bool operator>=(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y) +{ + return !(__x < __y); +} + +} // namespace std + +#endif /* __GLIBCPP_INTERNAL_STACK_H */ + +// Local Variables: +// mode:C++ +// End: |
