mirror of git://gcc.gnu.org/git/gcc.git
160 lines
5.2 KiB
C++
160 lines
5.2 KiB
C++
// Stack implementation -*- C++ -*-
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// Copyright (C) 2001 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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/*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*
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* Copyright (c) 1996,1997
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* Silicon Graphics Computer Systems, Inc.
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*/
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/* NOTE: This is an internal header file, included by other STL headers.
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* You should not attempt to use it directly.
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*/
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#ifndef __SGI_STL_INTERNAL_STACK_H
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#define __SGI_STL_INTERNAL_STACK_H
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#include <bits/concept_check.h>
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namespace std
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{
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// Forward declarations of operators == and <, needed for friend declaration.
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template <class _Tp,
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class _Sequence = deque<_Tp> >
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class stack;
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template <class _Tp, class _Seq>
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bool operator==(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y);
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template <class _Tp, class _Seq>
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bool operator<(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y);
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template <class _Tp, class _Sequence>
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class stack
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{
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// concept requirements
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__glibcpp_class_requires(_Tp, _SGIAssignableConcept);
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__glibcpp_class_requires(_Sequence, _BackInsertionSequenceConcept);
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typedef typename _Sequence::value_type _Sequence_value_type;
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__glibcpp_class_requires2(_Tp, _Sequence_value_type, _SameTypeConcept);
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template <class _Tp1, class _Seq1>
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friend bool operator== (const stack<_Tp1, _Seq1>&,
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const stack<_Tp1, _Seq1>&);
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template <class _Tp1, class _Seq1>
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friend bool operator< (const stack<_Tp1, _Seq1>&,
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const stack<_Tp1, _Seq1>&);
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public:
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typedef typename _Sequence::value_type value_type;
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typedef typename _Sequence::size_type size_type;
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typedef _Sequence container_type;
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typedef typename _Sequence::reference reference;
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typedef typename _Sequence::const_reference const_reference;
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protected:
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_Sequence c;
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public:
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stack() : c() {}
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explicit stack(const _Sequence& __s) : c(__s) {}
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bool empty() const { return c.empty(); }
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size_type size() const { return c.size(); }
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reference top() { return c.back(); }
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const_reference top() const { return c.back(); }
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void push(const value_type& __x) { c.push_back(__x); }
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void pop() { c.pop_back(); }
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};
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template <class _Tp, class _Seq>
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bool operator==(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y)
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{
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return __x.c == __y.c;
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}
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template <class _Tp, class _Seq>
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bool operator<(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y)
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{
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return __x.c < __y.c;
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}
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template <class _Tp, class _Seq>
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bool operator!=(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y)
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{
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return !(__x == __y);
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}
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template <class _Tp, class _Seq>
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bool operator>(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y)
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{
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return __y < __x;
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}
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template <class _Tp, class _Seq>
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bool operator<=(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y)
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{
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return !(__y < __x);
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}
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template <class _Tp, class _Seq>
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bool operator>=(const stack<_Tp,_Seq>& __x, const stack<_Tp,_Seq>& __y)
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{
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return !(__x < __y);
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}
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} // namespace std
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#endif /* __SGI_STL_INTERNAL_STACK_H */
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// Local Variables:
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// mode:C++
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// End:
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