stl_stac.h
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上传日期:2022-05-14
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文件大小:4k
源码类别:
STL
开发平台:
Visual C++
- /*
- *
- * 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.
- */
- /* NOTE: This is an internal header file, included by other STL headers.
- * You should not attempt to use it directly.
- */
- #ifndef __SGI_STL_INTERNAL_STACK_H
- #define __SGI_STL_INTERNAL_STACK_H
- #include <sequence_concepts.h>
- __STL_BEGIN_NAMESPACE
- // Forward declarations of operators == and <, needed for friend declaration.
- template <class _Tp,
- class _Sequence __STL_DEPENDENT_DEFAULT_TMPL(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 {
- // requirements:
- __STL_CLASS_REQUIRES(_Tp, _Assignable);
- __STL_CLASS_REQUIRES(_Sequence, _BackInsertionSequence);
- typedef typename _Sequence::value_type _Sequence_value_type;
- __STL_CLASS_REQUIRES_SAME_TYPE(_Tp, _Sequence_value_type);
- #ifdef __STL_MEMBER_TEMPLATES
- 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>&);
- #else /* __STL_MEMBER_TEMPLATES */
- friend bool __STD_QUALIFIER
- operator== __STL_NULL_TMPL_ARGS (const stack&, const stack&);
- friend bool __STD_QUALIFIER
- operator< __STL_NULL_TMPL_ARGS (const stack&, const stack&);
- #endif /* __STL_MEMBER_TEMPLATES */
- 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;
- }
- #ifdef __STL_FUNCTION_TMPL_PARTIAL_ORDER
- 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);
- }
- #endif /* __STL_FUNCTION_TMPL_PARTIAL_ORDER */
- __STL_END_NAMESPACE
- #endif /* __SGI_STL_INTERNAL_STACK_H */
- // Local Variables:
- // mode:C++
- // End: