stl_queu.h
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上传日期:2022-05-14
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文件大小:7k
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_QUEUE_H
- #define __SGI_STL_INTERNAL_QUEUE_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 queue;
- template <class _Tp, class _Seq>
- inline bool operator==(const queue<_Tp, _Seq>&, const queue<_Tp, _Seq>&);
- template <class _Tp, class _Seq>
- inline bool operator<(const queue<_Tp, _Seq>&, const queue<_Tp, _Seq>&);
- template <class _Tp, class _Sequence>
- class queue {
- // requirements:
- __STL_CLASS_REQUIRES(_Tp, _Assignable);
- __STL_CLASS_REQUIRES(_Sequence, _FrontInsertionSequence);
- __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 queue<_Tp1, _Seq1>&,
- const queue<_Tp1, _Seq1>&);
- template <class _Tp1, class _Seq1>
- friend bool operator< (const queue<_Tp1, _Seq1>&,
- const queue<_Tp1, _Seq1>&);
- #else /* __STL_MEMBER_TEMPLATES */
- friend bool __STD_QUALIFIER
- operator== __STL_NULL_TMPL_ARGS (const queue&, const queue&);
- friend bool __STD_QUALIFIER
- operator< __STL_NULL_TMPL_ARGS (const queue&, const queue&);
- #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:
- queue() : c() {}
- explicit queue(const _Sequence& __c) : c(__c) {}
- bool empty() const { return c.empty(); }
- size_type size() const { return c.size(); }
- reference front() { return c.front(); }
- const_reference front() const { return c.front(); }
- reference back() { return c.back(); }
- const_reference back() const { return c.back(); }
- void push(const value_type& __x) { c.push_back(__x); }
- void pop() { c.pop_front(); }
- };
- template <class _Tp, class _Sequence>
- bool
- operator==(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
- {
- return __x.c == __y.c;
- }
- template <class _Tp, class _Sequence>
- bool
- operator<(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
- {
- return __x.c < __y.c;
- }
- #ifdef __STL_FUNCTION_TMPL_PARTIAL_ORDER
- template <class _Tp, class _Sequence>
- bool
- operator!=(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
- {
- return !(__x == __y);
- }
- template <class _Tp, class _Sequence>
- bool
- operator>(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
- {
- return __y < __x;
- }
- template <class _Tp, class _Sequence>
- bool
- operator<=(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
- {
- return !(__y < __x);
- }
- template <class _Tp, class _Sequence>
- bool
- operator>=(const queue<_Tp, _Sequence>& __x, const queue<_Tp, _Sequence>& __y)
- {
- return !(__x < __y);
- }
- #endif /* __STL_FUNCTION_TMPL_PARTIAL_ORDER */
- template <class _Tp,
- class _Sequence __STL_DEPENDENT_DEFAULT_TMPL(vector<_Tp>),
- class _Compare
- __STL_DEPENDENT_DEFAULT_TMPL(less<typename _Sequence::value_type>) >
- class priority_queue {
- // requirements:
- __STL_CLASS_REQUIRES(_Tp, _Assignable);
- __STL_CLASS_REQUIRES(_Sequence, _Sequence);
- __STL_CLASS_REQUIRES(_Sequence, _RandomAccessContainer);
- typedef typename _Sequence::value_type _Sequence_value_type;
- __STL_CLASS_REQUIRES_SAME_TYPE(_Tp, _Sequence_value_type);
- __STL_CLASS_BINARY_FUNCTION_CHECK(_Compare, bool, _Tp, _Tp);
- 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;
- _Compare comp;
- public:
- priority_queue() : c() {}
- explicit priority_queue(const _Compare& __x) : c(), comp(__x) {}
- priority_queue(const _Compare& __x, const _Sequence& __s)
- : c(__s), comp(__x)
- { make_heap(c.begin(), c.end(), comp); }
- #ifdef __STL_MEMBER_TEMPLATES
- template <class _InputIterator>
- priority_queue(_InputIterator __first, _InputIterator __last)
- : c(__first, __last) { make_heap(c.begin(), c.end(), comp); }
- template <class _InputIterator>
- priority_queue(_InputIterator __first,
- _InputIterator __last, const _Compare& __x)
- : c(__first, __last), comp(__x)
- { make_heap(c.begin(), c.end(), comp); }
- template <class _InputIterator>
- priority_queue(_InputIterator __first, _InputIterator __last,
- const _Compare& __x, const _Sequence& __s)
- : c(__s), comp(__x)
- {
- c.insert(c.end(), __first, __last);
- make_heap(c.begin(), c.end(), comp);
- }
- #else /* __STL_MEMBER_TEMPLATES */
- priority_queue(const value_type* __first, const value_type* __last)
- : c(__first, __last) { make_heap(c.begin(), c.end(), comp); }
- priority_queue(const value_type* __first, const value_type* __last,
- const _Compare& __x)
- : c(__first, __last), comp(__x)
- { make_heap(c.begin(), c.end(), comp); }
- priority_queue(const value_type* __first, const value_type* __last,
- const _Compare& __x, const _Sequence& __c)
- : c(__c), comp(__x)
- {
- c.insert(c.end(), __first, __last);
- make_heap(c.begin(), c.end(), comp);
- }
- #endif /* __STL_MEMBER_TEMPLATES */
- bool empty() const { return c.empty(); }
- size_type size() const { return c.size(); }
- const_reference top() const { return c.front(); }
- void push(const value_type& __x) {
- __STL_TRY {
- c.push_back(__x);
- push_heap(c.begin(), c.end(), comp);
- }
- __STL_UNWIND(c.clear());
- }
- void pop() {
- __STL_TRY {
- pop_heap(c.begin(), c.end(), comp);
- c.pop_back();
- }
- __STL_UNWIND(c.clear());
- }
- };
- // no equality is provided
- __STL_END_NAMESPACE
- #endif /* __SGI_STL_INTERNAL_QUEUE_H */
- // Local Variables:
- // mode:C++
- // End: