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Diffstat (limited to 'uclibc-crosstools-gcc-4.4.2-1/usr/mips-linux-uclibc/include/c++/4.4.2/bits/stl_queue.h')
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diff --git a/uclibc-crosstools-gcc-4.4.2-1/usr/mips-linux-uclibc/include/c++/4.4.2/bits/stl_queue.h b/uclibc-crosstools-gcc-4.4.2-1/usr/mips-linux-uclibc/include/c++/4.4.2/bits/stl_queue.h new file mode 100644 index 0000000..7479469 --- /dev/null +++ b/uclibc-crosstools-gcc-4.4.2-1/usr/mips-linux-uclibc/include/c++/4.4.2/bits/stl_queue.h @@ -0,0 +1,586 @@ +// Queue implementation -*- C++ -*- + +// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 +// 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 3, 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. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +/* + * + * 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_queue.h + * This is an internal header file, included by other library headers. + * You should not attempt to use it directly. + */ + +#ifndef _STL_QUEUE_H +#define _STL_QUEUE_H 1 + +#include <bits/concept_check.h> +#include <debug/debug.h> + +_GLIBCXX_BEGIN_NAMESPACE(std) + + /** + * @brief A standard container giving FIFO behavior. + * + * @ingroup sequences + * + * Meets many of the requirements of a + * <a href="tables.html#65">container</a>, + * but does not define anything to do with iterators. Very few of the + * other standard container interfaces are defined. + * + * This is not a true container, but an @e adaptor. It holds another + * container, and provides a wrapper interface to that container. The + * wrapper is what enforces strict first-in-first-out %queue behavior. + * + * The second template parameter defines the type of the underlying + * sequence/container. It defaults to std::deque, but it can be any type + * that supports @c front, @c back, @c push_back, and @c pop_front, + * such as std::list or an appropriate user-defined type. + * + * Members not found in "normal" containers are @c container_type, + * which is a typedef for the second Sequence parameter, and @c push and + * @c pop, which are standard %queue/FIFO operations. + */ + template<typename _Tp, typename _Sequence = deque<_Tp> > + class queue + { + // concept requirements + typedef typename _Sequence::value_type _Sequence_value_type; + __glibcxx_class_requires(_Tp, _SGIAssignableConcept) + __glibcxx_class_requires(_Sequence, _FrontInsertionSequenceConcept) + __glibcxx_class_requires(_Sequence, _BackInsertionSequenceConcept) + __glibcxx_class_requires2(_Tp, _Sequence_value_type, _SameTypeConcept) + + template<typename _Tp1, typename _Seq1> + friend bool + operator==(const queue<_Tp1, _Seq1>&, const queue<_Tp1, _Seq1>&); + + template<typename _Tp1, typename _Seq1> + friend bool + operator<(const queue<_Tp1, _Seq1>&, const queue<_Tp1, _Seq1>&); + + public: + typedef typename _Sequence::value_type value_type; + typedef typename _Sequence::reference reference; + typedef typename _Sequence::const_reference const_reference; + typedef typename _Sequence::size_type size_type; + typedef _Sequence container_type; + + protected: + /** + * 'c' is the underlying container. Maintainers wondering why + * this isn't uglified as per style guidelines should note that + * this name is specified in the standard, [23.2.3.1]. (Why? + * Presumably for the same reason that it's protected instead + * of private: to allow derivation. But none of the other + * containers allow for derivation. Odd.) + */ + _Sequence c; + + public: + /** + * @brief Default constructor creates no elements. + */ +#ifndef __GXX_EXPERIMENTAL_CXX0X__ + explicit + queue(const _Sequence& __c = _Sequence()) + : c(__c) { } +#else + explicit + queue(const _Sequence& __c) + : c(__c) { } + + explicit + queue(_Sequence&& __c = _Sequence()) + : c(std::move(__c)) { } + + queue(queue&& __q) + : c(std::move(__q.c)) { } + + queue& + operator=(queue&& __q) + { + c = std::move(__q.c); + return *this; + } +#endif + + /** + * Returns true if the %queue is empty. + */ + bool + empty() const + { return c.empty(); } + + /** Returns the number of elements in the %queue. */ + size_type + size() const + { return c.size(); } + + /** + * Returns a read/write reference to the data at the first + * element of the %queue. + */ + reference + front() + { + __glibcxx_requires_nonempty(); + return c.front(); + } + + /** + * Returns a read-only (constant) reference to the data at the first + * element of the %queue. + */ + const_reference + front() const + { + __glibcxx_requires_nonempty(); + return c.front(); + } + + /** + * Returns a read/write reference to the data at the last + * element of the %queue. + */ + reference + back() + { + __glibcxx_requires_nonempty(); + return c.back(); + } + + /** + * Returns a read-only (constant) reference to the data at the last + * element of the %queue. + */ + const_reference + back() const + { + __glibcxx_requires_nonempty(); + return c.back(); + } + + /** + * @brief Add data to the end of the %queue. + * @param x Data to be added. + * + * This is a typical %queue operation. The function creates an + * element at the end of the %queue and assigns the given data + * to it. The time complexity of the operation depends on the + * underlying sequence. + */ + void + push(const value_type& __x) + { c.push_back(__x); } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + void + push(value_type&& __x) + { c.push_back(std::move(__x)); } + + template<typename... _Args> + void + emplace(_Args&&... __args) + { c.emplace_back(std::forward<_Args>(__args)...); } +#endif + + /** + * @brief Removes first element. + * + * This is a typical %queue operation. It shrinks the %queue by one. + * The time complexity of the operation depends on the underlying + * sequence. + * + * Note that no data is returned, and if the first element's + * data is needed, it should be retrieved before pop() is + * called. + */ + void + pop() + { + __glibcxx_requires_nonempty(); + c.pop_front(); + } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + void + swap(queue&& __q) + { c.swap(__q.c); } +#endif + }; + + /** + * @brief Queue equality comparison. + * @param x A %queue. + * @param y A %queue of the same type as @a x. + * @return True iff the size and elements of the queues are equal. + * + * This is an equivalence relation. Complexity and semantics depend on the + * underlying sequence type, but the expected rules are: this relation is + * linear in the size of the sequences, and queues are considered equivalent + * if their sequences compare equal. + */ + template<typename _Tp, typename _Seq> + inline bool + operator==(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y) + { return __x.c == __y.c; } + + /** + * @brief Queue ordering relation. + * @param x A %queue. + * @param y A %queue of the same type as @a x. + * @return True iff @a x is lexicographically less than @a y. + * + * This is an total ordering relation. Complexity and semantics + * depend on the underlying sequence type, but the expected rules + * are: this relation is linear in the size of the sequences, the + * elements must be comparable with @c <, and + * std::lexicographical_compare() is usually used to make the + * determination. + */ + template<typename _Tp, typename _Seq> + inline bool + operator<(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y) + { return __x.c < __y.c; } + + /// Based on operator== + template<typename _Tp, typename _Seq> + inline bool + operator!=(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y) + { return !(__x == __y); } + + /// Based on operator< + template<typename _Tp, typename _Seq> + inline bool + operator>(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y) + { return __y < __x; } + + /// Based on operator< + template<typename _Tp, typename _Seq> + inline bool + operator<=(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y) + { return !(__y < __x); } + + /// Based on operator< + template<typename _Tp, typename _Seq> + inline bool + operator>=(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y) + { return !(__x < __y); } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + template<typename _Tp, typename _Seq> + inline void + swap(queue<_Tp, _Seq>& __x, queue<_Tp, _Seq>& __y) + { __x.swap(__y); } + + template<typename _Tp, typename _Seq> + inline void + swap(queue<_Tp, _Seq>&& __x, queue<_Tp, _Seq>& __y) + { __x.swap(__y); } + + template<typename _Tp, typename _Seq> + inline void + swap(queue<_Tp, _Seq>& __x, queue<_Tp, _Seq>&& __y) + { __x.swap(__y); } +#endif + + /** + * @brief A standard container automatically sorting its contents. + * + * @ingroup sequences + * + * This is not a true container, but an @e adaptor. It holds + * another container, and provides a wrapper interface to that + * container. The wrapper is what enforces priority-based sorting + * and %queue behavior. Very few of the standard container/sequence + * interface requirements are met (e.g., iterators). + * + * The second template parameter defines the type of the underlying + * sequence/container. It defaults to std::vector, but it can be + * any type that supports @c front(), @c push_back, @c pop_back, + * and random-access iterators, such as std::deque or an + * appropriate user-defined type. + * + * The third template parameter supplies the means of making + * priority comparisons. It defaults to @c less<value_type> but + * can be anything defining a strict weak ordering. + * + * Members not found in "normal" containers are @c container_type, + * which is a typedef for the second Sequence parameter, and @c + * push, @c pop, and @c top, which are standard %queue operations. + * + * @note No equality/comparison operators are provided for + * %priority_queue. + * + * @note Sorting of the elements takes place as they are added to, + * and removed from, the %priority_queue using the + * %priority_queue's member functions. If you access the elements + * by other means, and change their data such that the sorting + * order would be different, the %priority_queue will not re-sort + * the elements for you. (How could it know to do so?) + */ + template<typename _Tp, typename _Sequence = vector<_Tp>, + typename _Compare = less<typename _Sequence::value_type> > + class priority_queue + { + // concept requirements + typedef typename _Sequence::value_type _Sequence_value_type; + __glibcxx_class_requires(_Tp, _SGIAssignableConcept) + __glibcxx_class_requires(_Sequence, _SequenceConcept) + __glibcxx_class_requires(_Sequence, _RandomAccessContainerConcept) + __glibcxx_class_requires2(_Tp, _Sequence_value_type, _SameTypeConcept) + __glibcxx_class_requires4(_Compare, bool, _Tp, _Tp, + _BinaryFunctionConcept) + + public: + typedef typename _Sequence::value_type value_type; + typedef typename _Sequence::reference reference; + typedef typename _Sequence::const_reference const_reference; + typedef typename _Sequence::size_type size_type; + typedef _Sequence container_type; + + protected: + // See queue::c for notes on these names. + _Sequence c; + _Compare comp; + + public: + /** + * @brief Default constructor creates no elements. + */ +#ifndef __GXX_EXPERIMENTAL_CXX0X__ + explicit + priority_queue(const _Compare& __x = _Compare(), + const _Sequence& __s = _Sequence()) + : c(__s), comp(__x) + { std::make_heap(c.begin(), c.end(), comp); } +#else + explicit + priority_queue(const _Compare& __x, + const _Sequence& __s) + : c(__s), comp(__x) + { std::make_heap(c.begin(), c.end(), comp); } + + explicit + priority_queue(const _Compare& __x = _Compare(), + _Sequence&& __s = _Sequence()) + : c(std::move(__s)), comp(__x) + { std::make_heap(c.begin(), c.end(), comp); } +#endif + + /** + * @brief Builds a %queue from a range. + * @param first An input iterator. + * @param last An input iterator. + * @param x A comparison functor describing a strict weak ordering. + * @param s An initial sequence with which to start. + * + * Begins by copying @a s, inserting a copy of the elements + * from @a [first,last) into the copy of @a s, then ordering + * the copy according to @a x. + * + * For more information on function objects, see the + * documentation on @link functors functor base + * classes@endlink. + */ +#ifndef __GXX_EXPERIMENTAL_CXX0X__ + template<typename _InputIterator> + priority_queue(_InputIterator __first, _InputIterator __last, + const _Compare& __x = _Compare(), + const _Sequence& __s = _Sequence()) + : c(__s), comp(__x) + { + __glibcxx_requires_valid_range(__first, __last); + c.insert(c.end(), __first, __last); + std::make_heap(c.begin(), c.end(), comp); + } +#else + template<typename _InputIterator> + priority_queue(_InputIterator __first, _InputIterator __last, + const _Compare& __x, + const _Sequence& __s) + : c(__s), comp(__x) + { + __glibcxx_requires_valid_range(__first, __last); + c.insert(c.end(), __first, __last); + std::make_heap(c.begin(), c.end(), comp); + } + + template<typename _InputIterator> + priority_queue(_InputIterator __first, _InputIterator __last, + const _Compare& __x = _Compare(), + _Sequence&& __s = _Sequence()) + : c(std::move(__s)), comp(__x) + { + __glibcxx_requires_valid_range(__first, __last); + c.insert(c.end(), __first, __last); + std::make_heap(c.begin(), c.end(), comp); + } + + priority_queue(priority_queue&& __pq) + : c(std::move(__pq.c)), comp(std::move(__pq.comp)) { } + + priority_queue& + operator=(priority_queue&& __pq) + { + c = std::move(__pq.c); + comp = std::move(__pq.comp); + return *this; + } +#endif + + /** + * Returns true if the %queue is empty. + */ + bool + empty() const + { return c.empty(); } + + /** Returns the number of elements in the %queue. */ + size_type + size() const + { return c.size(); } + + /** + * Returns a read-only (constant) reference to the data at the first + * element of the %queue. + */ + const_reference + top() const + { + __glibcxx_requires_nonempty(); + return c.front(); + } + + /** + * @brief Add data to the %queue. + * @param x Data to be added. + * + * This is a typical %queue operation. + * The time complexity of the operation depends on the underlying + * sequence. + */ + void + push(const value_type& __x) + { + c.push_back(__x); + std::push_heap(c.begin(), c.end(), comp); + } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + void + push(value_type&& __x) + { + c.push_back(std::move(__x)); + std::push_heap(c.begin(), c.end(), comp); + } + + template<typename... _Args> + void + emplace(_Args&&... __args) + { + c.emplace_back(std::forward<_Args>(__args)...); + std::push_heap(c.begin(), c.end(), comp); + } +#endif + + /** + * @brief Removes first element. + * + * This is a typical %queue operation. It shrinks the %queue + * by one. The time complexity of the operation depends on the + * underlying sequence. + * + * Note that no data is returned, and if the first element's + * data is needed, it should be retrieved before pop() is + * called. + */ + void + pop() + { + __glibcxx_requires_nonempty(); + std::pop_heap(c.begin(), c.end(), comp); + c.pop_back(); + } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + void + swap(priority_queue&& __pq) + { + using std::swap; + c.swap(__pq.c); + swap(comp, __pq.comp); + } +#endif + }; + + // No equality/comparison operators are provided for priority_queue. + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + template<typename _Tp, typename _Sequence, typename _Compare> + inline void + swap(priority_queue<_Tp, _Sequence, _Compare>& __x, + priority_queue<_Tp, _Sequence, _Compare>& __y) + { __x.swap(__y); } + + template<typename _Tp, typename _Sequence, typename _Compare> + inline void + swap(priority_queue<_Tp, _Sequence, _Compare>&& __x, + priority_queue<_Tp, _Sequence, _Compare>& __y) + { __x.swap(__y); } + + template<typename _Tp, typename _Sequence, typename _Compare> + inline void + swap(priority_queue<_Tp, _Sequence, _Compare>& __x, + priority_queue<_Tp, _Sequence, _Compare>&& __y) + { __x.swap(__y); } +#endif + +_GLIBCXX_END_NAMESPACE + +#endif /* _STL_QUEUE_H */ |