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Diffstat (limited to 'gcc-4.8.1/libstdc++-v3/include/bits/stl_map.h')
-rw-r--r-- | gcc-4.8.1/libstdc++-v3/include/bits/stl_map.h | 1020 |
1 files changed, 0 insertions, 1020 deletions
diff --git a/gcc-4.8.1/libstdc++-v3/include/bits/stl_map.h b/gcc-4.8.1/libstdc++-v3/include/bits/stl_map.h deleted file mode 100644 index 1f6763cd2..000000000 --- a/gcc-4.8.1/libstdc++-v3/include/bits/stl_map.h +++ /dev/null @@ -1,1020 +0,0 @@ -// Map implementation -*- C++ -*- - -// Copyright (C) 2001-2013 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 bits/stl_map.h - * This is an internal header file, included by other library headers. - * Do not attempt to use it directly. @headername{map} - */ - -#ifndef _STL_MAP_H -#define _STL_MAP_H 1 - -#include <bits/functexcept.h> -#include <bits/concept_check.h> -#if __cplusplus >= 201103L -#include <initializer_list> -#include <tuple> -#endif - -namespace std _GLIBCXX_VISIBILITY(default) -{ -_GLIBCXX_BEGIN_NAMESPACE_CONTAINER - - /** - * @brief A standard container made up of (key,value) pairs, which can be - * retrieved based on a key, in logarithmic time. - * - * @ingroup associative_containers - * - * @tparam _Key Type of key objects. - * @tparam _Tp Type of mapped objects. - * @tparam _Compare Comparison function object type, defaults to less<_Key>. - * @tparam _Alloc Allocator type, defaults to - * allocator<pair<const _Key, _Tp>. - * - * Meets the requirements of a <a href="tables.html#65">container</a>, a - * <a href="tables.html#66">reversible container</a>, and an - * <a href="tables.html#69">associative container</a> (using unique keys). - * For a @c map<Key,T> the key_type is Key, the mapped_type is T, and the - * value_type is std::pair<const Key,T>. - * - * Maps support bidirectional iterators. - * - * The private tree data is declared exactly the same way for map and - * multimap; the distinction is made entirely in how the tree functions are - * called (*_unique versus *_equal, same as the standard). - */ - template <typename _Key, typename _Tp, typename _Compare = std::less<_Key>, - typename _Alloc = std::allocator<std::pair<const _Key, _Tp> > > - class map - { - public: - typedef _Key key_type; - typedef _Tp mapped_type; - typedef std::pair<const _Key, _Tp> value_type; - typedef _Compare key_compare; - typedef _Alloc allocator_type; - - private: - // concept requirements - typedef typename _Alloc::value_type _Alloc_value_type; - __glibcxx_class_requires(_Tp, _SGIAssignableConcept) - __glibcxx_class_requires4(_Compare, bool, _Key, _Key, - _BinaryFunctionConcept) - __glibcxx_class_requires2(value_type, _Alloc_value_type, _SameTypeConcept) - - public: - class value_compare - : public std::binary_function<value_type, value_type, bool> - { - friend class map<_Key, _Tp, _Compare, _Alloc>; - protected: - _Compare comp; - - value_compare(_Compare __c) - : comp(__c) { } - - public: - bool operator()(const value_type& __x, const value_type& __y) const - { return comp(__x.first, __y.first); } - }; - - private: - /// This turns a red-black tree into a [multi]map. - typedef typename _Alloc::template rebind<value_type>::other - _Pair_alloc_type; - - typedef _Rb_tree<key_type, value_type, _Select1st<value_type>, - key_compare, _Pair_alloc_type> _Rep_type; - - /// The actual tree structure. - _Rep_type _M_t; - - public: - // many of these are specified differently in ISO, but the following are - // "functionally equivalent" - typedef typename _Pair_alloc_type::pointer pointer; - typedef typename _Pair_alloc_type::const_pointer const_pointer; - typedef typename _Pair_alloc_type::reference reference; - typedef typename _Pair_alloc_type::const_reference const_reference; - typedef typename _Rep_type::iterator iterator; - typedef typename _Rep_type::const_iterator const_iterator; - typedef typename _Rep_type::size_type size_type; - typedef typename _Rep_type::difference_type difference_type; - typedef typename _Rep_type::reverse_iterator reverse_iterator; - typedef typename _Rep_type::const_reverse_iterator const_reverse_iterator; - - // [23.3.1.1] construct/copy/destroy - // (get_allocator() is normally listed in this section, but seems to have - // been accidentally omitted in the printed standard) - /** - * @brief Default constructor creates no elements. - */ - map() - : _M_t() { } - - /** - * @brief Creates a %map with no elements. - * @param __comp A comparison object. - * @param __a An allocator object. - */ - explicit - map(const _Compare& __comp, - const allocator_type& __a = allocator_type()) - : _M_t(__comp, _Pair_alloc_type(__a)) { } - - /** - * @brief %Map copy constructor. - * @param __x A %map of identical element and allocator types. - * - * The newly-created %map uses a copy of the allocation object - * used by @a __x. - */ - map(const map& __x) - : _M_t(__x._M_t) { } - -#if __cplusplus >= 201103L - /** - * @brief %Map move constructor. - * @param __x A %map of identical element and allocator types. - * - * The newly-created %map contains the exact contents of @a __x. - * The contents of @a __x are a valid, but unspecified %map. - */ - map(map&& __x) - noexcept(is_nothrow_copy_constructible<_Compare>::value) - : _M_t(std::move(__x._M_t)) { } - - /** - * @brief Builds a %map from an initializer_list. - * @param __l An initializer_list. - * @param __comp A comparison object. - * @param __a An allocator object. - * - * Create a %map consisting of copies of the elements in the - * initializer_list @a __l. - * This is linear in N if the range is already sorted, and NlogN - * otherwise (where N is @a __l.size()). - */ - map(initializer_list<value_type> __l, - const _Compare& __comp = _Compare(), - const allocator_type& __a = allocator_type()) - : _M_t(__comp, _Pair_alloc_type(__a)) - { _M_t._M_insert_unique(__l.begin(), __l.end()); } -#endif - - /** - * @brief Builds a %map from a range. - * @param __first An input iterator. - * @param __last An input iterator. - * - * Create a %map consisting of copies of the elements from - * [__first,__last). This is linear in N if the range is - * already sorted, and NlogN otherwise (where N is - * distance(__first,__last)). - */ - template<typename _InputIterator> - map(_InputIterator __first, _InputIterator __last) - : _M_t() - { _M_t._M_insert_unique(__first, __last); } - - /** - * @brief Builds a %map from a range. - * @param __first An input iterator. - * @param __last An input iterator. - * @param __comp A comparison functor. - * @param __a An allocator object. - * - * Create a %map consisting of copies of the elements from - * [__first,__last). This is linear in N if the range is - * already sorted, and NlogN otherwise (where N is - * distance(__first,__last)). - */ - template<typename _InputIterator> - map(_InputIterator __first, _InputIterator __last, - const _Compare& __comp, - const allocator_type& __a = allocator_type()) - : _M_t(__comp, _Pair_alloc_type(__a)) - { _M_t._M_insert_unique(__first, __last); } - - // FIXME There is no dtor declared, but we should have something - // generated by Doxygen. I don't know what tags to add to this - // paragraph to make that happen: - /** - * The dtor only erases the elements, and note that if the elements - * themselves are pointers, the pointed-to memory is not touched in any - * way. Managing the pointer is the user's responsibility. - */ - - /** - * @brief %Map assignment operator. - * @param __x A %map of identical element and allocator types. - * - * All the elements of @a __x are copied, but unlike the copy - * constructor, the allocator object is not copied. - */ - map& - operator=(const map& __x) - { - _M_t = __x._M_t; - return *this; - } - -#if __cplusplus >= 201103L - /** - * @brief %Map move assignment operator. - * @param __x A %map of identical element and allocator types. - * - * The contents of @a __x are moved into this map (without copying). - * @a __x is a valid, but unspecified %map. - */ - map& - operator=(map&& __x) - { - // NB: DR 1204. - // NB: DR 675. - this->clear(); - this->swap(__x); - return *this; - } - - /** - * @brief %Map list assignment operator. - * @param __l An initializer_list. - * - * This function fills a %map with copies of the elements in the - * initializer list @a __l. - * - * Note that the assignment completely changes the %map and - * that the resulting %map's size is the same as the number - * of elements assigned. Old data may be lost. - */ - map& - operator=(initializer_list<value_type> __l) - { - this->clear(); - this->insert(__l.begin(), __l.end()); - return *this; - } -#endif - - /// Get a copy of the memory allocation object. - allocator_type - get_allocator() const _GLIBCXX_NOEXCEPT - { return allocator_type(_M_t.get_allocator()); } - - // iterators - /** - * Returns a read/write iterator that points to the first pair in the - * %map. - * Iteration is done in ascending order according to the keys. - */ - iterator - begin() _GLIBCXX_NOEXCEPT - { return _M_t.begin(); } - - /** - * Returns a read-only (constant) iterator that points to the first pair - * in the %map. Iteration is done in ascending order according to the - * keys. - */ - const_iterator - begin() const _GLIBCXX_NOEXCEPT - { return _M_t.begin(); } - - /** - * Returns a read/write iterator that points one past the last - * pair in the %map. Iteration is done in ascending order - * according to the keys. - */ - iterator - end() _GLIBCXX_NOEXCEPT - { return _M_t.end(); } - - /** - * Returns a read-only (constant) iterator that points one past the last - * pair in the %map. Iteration is done in ascending order according to - * the keys. - */ - const_iterator - end() const _GLIBCXX_NOEXCEPT - { return _M_t.end(); } - - /** - * Returns a read/write reverse iterator that points to the last pair in - * the %map. Iteration is done in descending order according to the - * keys. - */ - reverse_iterator - rbegin() _GLIBCXX_NOEXCEPT - { return _M_t.rbegin(); } - - /** - * Returns a read-only (constant) reverse iterator that points to the - * last pair in the %map. Iteration is done in descending order - * according to the keys. - */ - const_reverse_iterator - rbegin() const _GLIBCXX_NOEXCEPT - { return _M_t.rbegin(); } - - /** - * Returns a read/write reverse iterator that points to one before the - * first pair in the %map. Iteration is done in descending order - * according to the keys. - */ - reverse_iterator - rend() _GLIBCXX_NOEXCEPT - { return _M_t.rend(); } - - /** - * Returns a read-only (constant) reverse iterator that points to one - * before the first pair in the %map. Iteration is done in descending - * order according to the keys. - */ - const_reverse_iterator - rend() const _GLIBCXX_NOEXCEPT - { return _M_t.rend(); } - -#if __cplusplus >= 201103L - /** - * Returns a read-only (constant) iterator that points to the first pair - * in the %map. Iteration is done in ascending order according to the - * keys. - */ - const_iterator - cbegin() const noexcept - { return _M_t.begin(); } - - /** - * Returns a read-only (constant) iterator that points one past the last - * pair in the %map. Iteration is done in ascending order according to - * the keys. - */ - const_iterator - cend() const noexcept - { return _M_t.end(); } - - /** - * Returns a read-only (constant) reverse iterator that points to the - * last pair in the %map. Iteration is done in descending order - * according to the keys. - */ - const_reverse_iterator - crbegin() const noexcept - { return _M_t.rbegin(); } - - /** - * Returns a read-only (constant) reverse iterator that points to one - * before the first pair in the %map. Iteration is done in descending - * order according to the keys. - */ - const_reverse_iterator - crend() const noexcept - { return _M_t.rend(); } -#endif - - // capacity - /** Returns true if the %map is empty. (Thus begin() would equal - * end().) - */ - bool - empty() const _GLIBCXX_NOEXCEPT - { return _M_t.empty(); } - - /** Returns the size of the %map. */ - size_type - size() const _GLIBCXX_NOEXCEPT - { return _M_t.size(); } - - /** Returns the maximum size of the %map. */ - size_type - max_size() const _GLIBCXX_NOEXCEPT - { return _M_t.max_size(); } - - // [23.3.1.2] element access - /** - * @brief Subscript ( @c [] ) access to %map data. - * @param __k The key for which data should be retrieved. - * @return A reference to the data of the (key,data) %pair. - * - * Allows for easy lookup with the subscript ( @c [] ) - * operator. Returns data associated with the key specified in - * subscript. If the key does not exist, a pair with that key - * is created using default values, which is then returned. - * - * Lookup requires logarithmic time. - */ - mapped_type& - operator[](const key_type& __k) - { - // concept requirements - __glibcxx_function_requires(_DefaultConstructibleConcept<mapped_type>) - - iterator __i = lower_bound(__k); - // __i->first is greater than or equivalent to __k. - if (__i == end() || key_comp()(__k, (*__i).first)) -#if __cplusplus >= 201103L - __i = _M_t._M_emplace_hint_unique(__i, std::piecewise_construct, - std::tuple<const key_type&>(__k), - std::tuple<>()); -#else - __i = insert(__i, value_type(__k, mapped_type())); -#endif - return (*__i).second; - } - -#if __cplusplus >= 201103L - mapped_type& - operator[](key_type&& __k) - { - // concept requirements - __glibcxx_function_requires(_DefaultConstructibleConcept<mapped_type>) - - iterator __i = lower_bound(__k); - // __i->first is greater than or equivalent to __k. - if (__i == end() || key_comp()(__k, (*__i).first)) - __i = _M_t._M_emplace_hint_unique(__i, std::piecewise_construct, - std::forward_as_tuple(std::move(__k)), - std::tuple<>()); - return (*__i).second; - } -#endif - - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // DR 464. Suggestion for new member functions in standard containers. - /** - * @brief Access to %map data. - * @param __k The key for which data should be retrieved. - * @return A reference to the data whose key is equivalent to @a __k, if - * such a data is present in the %map. - * @throw std::out_of_range If no such data is present. - */ - mapped_type& - at(const key_type& __k) - { - iterator __i = lower_bound(__k); - if (__i == end() || key_comp()(__k, (*__i).first)) - __throw_out_of_range(__N("map::at")); - return (*__i).second; - } - - const mapped_type& - at(const key_type& __k) const - { - const_iterator __i = lower_bound(__k); - if (__i == end() || key_comp()(__k, (*__i).first)) - __throw_out_of_range(__N("map::at")); - return (*__i).second; - } - - // modifiers -#if __cplusplus >= 201103L - /** - * @brief Attempts to build and insert a std::pair into the %map. - * - * @param __args Arguments used to generate a new pair instance (see - * std::piecewise_contruct for passing arguments to each - * part of the pair constructor). - * - * @return A pair, of which the first element is an iterator that points - * to the possibly inserted pair, and the second is a bool that - * is true if the pair was actually inserted. - * - * This function attempts to build and insert a (key, value) %pair into - * the %map. - * A %map relies on unique keys and thus a %pair is only inserted if its - * first element (the key) is not already present in the %map. - * - * Insertion requires logarithmic time. - */ - template<typename... _Args> - std::pair<iterator, bool> - emplace(_Args&&... __args) - { return _M_t._M_emplace_unique(std::forward<_Args>(__args)...); } - - /** - * @brief Attempts to build and insert a std::pair into the %map. - * - * @param __pos An iterator that serves as a hint as to where the pair - * should be inserted. - * @param __args Arguments used to generate a new pair instance (see - * std::piecewise_contruct for passing arguments to each - * part of the pair constructor). - * @return An iterator that points to the element with key of the - * std::pair built from @a __args (may or may not be that - * std::pair). - * - * This function is not concerned about whether the insertion took place, - * and thus does not return a boolean like the single-argument emplace() - * does. - * Note that the first parameter is only a hint and can potentially - * improve the performance of the insertion process. A bad hint would - * cause no gains in efficiency. - * - * See - * http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt07ch17.html - * for more on @a hinting. - * - * Insertion requires logarithmic time (if the hint is not taken). - */ - template<typename... _Args> - iterator - emplace_hint(const_iterator __pos, _Args&&... __args) - { - return _M_t._M_emplace_hint_unique(__pos, - std::forward<_Args>(__args)...); - } -#endif - - /** - * @brief Attempts to insert a std::pair into the %map. - - * @param __x Pair to be inserted (see std::make_pair for easy - * creation of pairs). - * - * @return A pair, of which the first element is an iterator that - * points to the possibly inserted pair, and the second is - * a bool that is true if the pair was actually inserted. - * - * This function attempts to insert a (key, value) %pair into the %map. - * A %map relies on unique keys and thus a %pair is only inserted if its - * first element (the key) is not already present in the %map. - * - * Insertion requires logarithmic time. - */ - std::pair<iterator, bool> - insert(const value_type& __x) - { return _M_t._M_insert_unique(__x); } - -#if __cplusplus >= 201103L - template<typename _Pair, typename = typename - std::enable_if<std::is_constructible<value_type, - _Pair&&>::value>::type> - std::pair<iterator, bool> - insert(_Pair&& __x) - { return _M_t._M_insert_unique(std::forward<_Pair>(__x)); } -#endif - -#if __cplusplus >= 201103L - /** - * @brief Attempts to insert a list of std::pairs into the %map. - * @param __list A std::initializer_list<value_type> of pairs to be - * inserted. - * - * Complexity similar to that of the range constructor. - */ - void - insert(std::initializer_list<value_type> __list) - { insert(__list.begin(), __list.end()); } -#endif - - /** - * @brief Attempts to insert a std::pair into the %map. - * @param __position An iterator that serves as a hint as to where the - * pair should be inserted. - * @param __x Pair to be inserted (see std::make_pair for easy creation - * of pairs). - * @return An iterator that points to the element with key of - * @a __x (may or may not be the %pair passed in). - * - - * This function is not concerned about whether the insertion - * took place, and thus does not return a boolean like the - * single-argument insert() does. Note that the first - * parameter is only a hint and can potentially improve the - * performance of the insertion process. A bad hint would - * cause no gains in efficiency. - * - * See - * http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt07ch17.html - * for more on @a hinting. - * - * Insertion requires logarithmic time (if the hint is not taken). - */ - iterator -#if __cplusplus >= 201103L - insert(const_iterator __position, const value_type& __x) -#else - insert(iterator __position, const value_type& __x) -#endif - { return _M_t._M_insert_unique_(__position, __x); } - -#if __cplusplus >= 201103L - template<typename _Pair, typename = typename - std::enable_if<std::is_constructible<value_type, - _Pair&&>::value>::type> - iterator - insert(const_iterator __position, _Pair&& __x) - { return _M_t._M_insert_unique_(__position, - std::forward<_Pair>(__x)); } -#endif - - /** - * @brief Template function that attempts to insert a range of elements. - * @param __first Iterator pointing to the start of the range to be - * inserted. - * @param __last Iterator pointing to the end of the range. - * - * Complexity similar to that of the range constructor. - */ - template<typename _InputIterator> - void - insert(_InputIterator __first, _InputIterator __last) - { _M_t._M_insert_unique(__first, __last); } - -#if __cplusplus >= 201103L - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // DR 130. Associative erase should return an iterator. - /** - * @brief Erases an element from a %map. - * @param __position An iterator pointing to the element to be erased. - * @return An iterator pointing to the element immediately following - * @a position prior to the element being erased. If no such - * element exists, end() is returned. - * - * This function erases an element, pointed to by the given - * iterator, from a %map. Note that this function only erases - * the element, and that if the element is itself a pointer, - * the pointed-to memory is not touched in any way. Managing - * the pointer is the user's responsibility. - */ - iterator - erase(const_iterator __position) - { return _M_t.erase(__position); } - - // LWG 2059. - iterator - erase(iterator __position) - { return _M_t.erase(__position); } -#else - /** - * @brief Erases an element from a %map. - * @param __position An iterator pointing to the element to be erased. - * - * This function erases an element, pointed to by the given - * iterator, from a %map. Note that this function only erases - * the element, and that if the element is itself a pointer, - * the pointed-to memory is not touched in any way. Managing - * the pointer is the user's responsibility. - */ - void - erase(iterator __position) - { _M_t.erase(__position); } -#endif - - /** - * @brief Erases elements according to the provided key. - * @param __x Key of element to be erased. - * @return The number of elements erased. - * - * This function erases all the elements located by the given key from - * a %map. - * Note that this function only erases the element, and that if - * the element is itself a pointer, the pointed-to memory is not touched - * in any way. Managing the pointer is the user's responsibility. - */ - size_type - erase(const key_type& __x) - { return _M_t.erase(__x); } - -#if __cplusplus >= 201103L - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // DR 130. Associative erase should return an iterator. - /** - * @brief Erases a [first,last) range of elements from a %map. - * @param __first Iterator pointing to the start of the range to be - * erased. - * @param __last Iterator pointing to the end of the range to - * be erased. - * @return The iterator @a __last. - * - * This function erases a sequence of elements from a %map. - * Note that this function only erases the element, and that if - * the element is itself a pointer, the pointed-to memory is not touched - * in any way. Managing the pointer is the user's responsibility. - */ - iterator - erase(const_iterator __first, const_iterator __last) - { return _M_t.erase(__first, __last); } -#else - /** - * @brief Erases a [__first,__last) range of elements from a %map. - * @param __first Iterator pointing to the start of the range to be - * erased. - * @param __last Iterator pointing to the end of the range to - * be erased. - * - * This function erases a sequence of elements from a %map. - * Note that this function only erases the element, and that if - * the element is itself a pointer, the pointed-to memory is not touched - * in any way. Managing the pointer is the user's responsibility. - */ - void - erase(iterator __first, iterator __last) - { _M_t.erase(__first, __last); } -#endif - - /** - * @brief Swaps data with another %map. - * @param __x A %map of the same element and allocator types. - * - * This exchanges the elements between two maps in constant - * time. (It is only swapping a pointer, an integer, and an - * instance of the @c Compare type (which itself is often - * stateless and empty), so it should be quite fast.) Note - * that the global std::swap() function is specialized such - * that std::swap(m1,m2) will feed to this function. - */ - void - swap(map& __x) - { _M_t.swap(__x._M_t); } - - /** - * Erases all elements in a %map. Note that this function only - * erases the elements, and that if the elements themselves are - * pointers, the pointed-to memory is not touched in any way. - * Managing the pointer is the user's responsibility. - */ - void - clear() _GLIBCXX_NOEXCEPT - { _M_t.clear(); } - - // observers - /** - * Returns the key comparison object out of which the %map was - * constructed. - */ - key_compare - key_comp() const - { return _M_t.key_comp(); } - - /** - * Returns a value comparison object, built from the key comparison - * object out of which the %map was constructed. - */ - value_compare - value_comp() const - { return value_compare(_M_t.key_comp()); } - - // [23.3.1.3] map operations - /** - * @brief Tries to locate an element in a %map. - * @param __x Key of (key, value) %pair to be located. - * @return Iterator pointing to sought-after element, or end() if not - * found. - * - * This function takes a key and tries to locate the element with which - * the key matches. If successful the function returns an iterator - * pointing to the sought after %pair. If unsuccessful it returns the - * past-the-end ( @c end() ) iterator. - */ - iterator - find(const key_type& __x) - { return _M_t.find(__x); } - - /** - * @brief Tries to locate an element in a %map. - * @param __x Key of (key, value) %pair to be located. - * @return Read-only (constant) iterator pointing to sought-after - * element, or end() if not found. - * - * This function takes a key and tries to locate the element with which - * the key matches. If successful the function returns a constant - * iterator pointing to the sought after %pair. If unsuccessful it - * returns the past-the-end ( @c end() ) iterator. - */ - const_iterator - find(const key_type& __x) const - { return _M_t.find(__x); } - - /** - * @brief Finds the number of elements with given key. - * @param __x Key of (key, value) pairs to be located. - * @return Number of elements with specified key. - * - * This function only makes sense for multimaps; for map the result will - * either be 0 (not present) or 1 (present). - */ - size_type - count(const key_type& __x) const - { return _M_t.find(__x) == _M_t.end() ? 0 : 1; } - - /** - * @brief Finds the beginning of a subsequence matching given key. - * @param __x Key of (key, value) pair to be located. - * @return Iterator pointing to first element equal to or greater - * than key, or end(). - * - * This function returns the first element of a subsequence of elements - * that matches the given key. If unsuccessful it returns an iterator - * pointing to the first element that has a greater value than given key - * or end() if no such element exists. - */ - iterator - lower_bound(const key_type& __x) - { return _M_t.lower_bound(__x); } - - /** - * @brief Finds the beginning of a subsequence matching given key. - * @param __x Key of (key, value) pair to be located. - * @return Read-only (constant) iterator pointing to first element - * equal to or greater than key, or end(). - * - * This function returns the first element of a subsequence of elements - * that matches the given key. If unsuccessful it returns an iterator - * pointing to the first element that has a greater value than given key - * or end() if no such element exists. - */ - const_iterator - lower_bound(const key_type& __x) const - { return _M_t.lower_bound(__x); } - - /** - * @brief Finds the end of a subsequence matching given key. - * @param __x Key of (key, value) pair to be located. - * @return Iterator pointing to the first element - * greater than key, or end(). - */ - iterator - upper_bound(const key_type& __x) - { return _M_t.upper_bound(__x); } - - /** - * @brief Finds the end of a subsequence matching given key. - * @param __x Key of (key, value) pair to be located. - * @return Read-only (constant) iterator pointing to first iterator - * greater than key, or end(). - */ - const_iterator - upper_bound(const key_type& __x) const - { return _M_t.upper_bound(__x); } - - /** - * @brief Finds a subsequence matching given key. - * @param __x Key of (key, value) pairs to be located. - * @return Pair of iterators that possibly points to the subsequence - * matching given key. - * - * This function is equivalent to - * @code - * std::make_pair(c.lower_bound(val), - * c.upper_bound(val)) - * @endcode - * (but is faster than making the calls separately). - * - * This function probably only makes sense for multimaps. - */ - std::pair<iterator, iterator> - equal_range(const key_type& __x) - { return _M_t.equal_range(__x); } - - /** - * @brief Finds a subsequence matching given key. - * @param __x Key of (key, value) pairs to be located. - * @return Pair of read-only (constant) iterators that possibly points - * to the subsequence matching given key. - * - * This function is equivalent to - * @code - * std::make_pair(c.lower_bound(val), - * c.upper_bound(val)) - * @endcode - * (but is faster than making the calls separately). - * - * This function probably only makes sense for multimaps. - */ - std::pair<const_iterator, const_iterator> - equal_range(const key_type& __x) const - { return _M_t.equal_range(__x); } - - template<typename _K1, typename _T1, typename _C1, typename _A1> - friend bool - operator==(const map<_K1, _T1, _C1, _A1>&, - const map<_K1, _T1, _C1, _A1>&); - - template<typename _K1, typename _T1, typename _C1, typename _A1> - friend bool - operator<(const map<_K1, _T1, _C1, _A1>&, - const map<_K1, _T1, _C1, _A1>&); - }; - - /** - * @brief Map equality comparison. - * @param __x A %map. - * @param __y A %map of the same type as @a x. - * @return True iff the size and elements of the maps are equal. - * - * This is an equivalence relation. It is linear in the size of the - * maps. Maps are considered equivalent if their sizes are equal, - * and if corresponding elements compare equal. - */ - template<typename _Key, typename _Tp, typename _Compare, typename _Alloc> - inline bool - operator==(const map<_Key, _Tp, _Compare, _Alloc>& __x, - const map<_Key, _Tp, _Compare, _Alloc>& __y) - { return __x._M_t == __y._M_t; } - - /** - * @brief Map ordering relation. - * @param __x A %map. - * @param __y A %map of the same type as @a x. - * @return True iff @a x is lexicographically less than @a y. - * - * This is a total ordering relation. It is linear in the size of the - * maps. The elements must be comparable with @c <. - * - * See std::lexicographical_compare() for how the determination is made. - */ - template<typename _Key, typename _Tp, typename _Compare, typename _Alloc> - inline bool - operator<(const map<_Key, _Tp, _Compare, _Alloc>& __x, - const map<_Key, _Tp, _Compare, _Alloc>& __y) - { return __x._M_t < __y._M_t; } - - /// Based on operator== - template<typename _Key, typename _Tp, typename _Compare, typename _Alloc> - inline bool - operator!=(const map<_Key, _Tp, _Compare, _Alloc>& __x, - const map<_Key, _Tp, _Compare, _Alloc>& __y) - { return !(__x == __y); } - - /// Based on operator< - template<typename _Key, typename _Tp, typename _Compare, typename _Alloc> - inline bool - operator>(const map<_Key, _Tp, _Compare, _Alloc>& __x, - const map<_Key, _Tp, _Compare, _Alloc>& __y) - { return __y < __x; } - - /// Based on operator< - template<typename _Key, typename _Tp, typename _Compare, typename _Alloc> - inline bool - operator<=(const map<_Key, _Tp, _Compare, _Alloc>& __x, - const map<_Key, _Tp, _Compare, _Alloc>& __y) - { return !(__y < __x); } - - /// Based on operator< - template<typename _Key, typename _Tp, typename _Compare, typename _Alloc> - inline bool - operator>=(const map<_Key, _Tp, _Compare, _Alloc>& __x, - const map<_Key, _Tp, _Compare, _Alloc>& __y) - { return !(__x < __y); } - - /// See std::map::swap(). - template<typename _Key, typename _Tp, typename _Compare, typename _Alloc> - inline void - swap(map<_Key, _Tp, _Compare, _Alloc>& __x, - map<_Key, _Tp, _Compare, _Alloc>& __y) - { __x.swap(__y); } - -_GLIBCXX_END_NAMESPACE_CONTAINER -} // namespace std - -#endif /* _STL_MAP_H */ |