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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/bits/stl_list.h')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/bits/stl_list.h | 1557 |
1 files changed, 0 insertions, 1557 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/bits/stl_list.h b/gcc-4.4.3/libstdc++-v3/include/bits/stl_list.h deleted file mode 100644 index 8206c8446..000000000 --- a/gcc-4.4.3/libstdc++-v3/include/bits/stl_list.h +++ /dev/null @@ -1,1557 +0,0 @@ -// List 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_list.h - * This is an internal header file, included by other library headers. - * You should not attempt to use it directly. - */ - -#ifndef _STL_LIST_H -#define _STL_LIST_H 1 - -#include <bits/concept_check.h> -#include <initializer_list> - -_GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D) - - // Supporting structures are split into common and templated types; the - // latter publicly inherits from the former in an effort to reduce code - // duplication. This results in some "needless" static_cast'ing later on, - // but it's all safe downcasting. - - /// Common part of a node in the %list. - struct _List_node_base - { - _List_node_base* _M_next; - _List_node_base* _M_prev; - - static void - swap(_List_node_base& __x, _List_node_base& __y); - - void - transfer(_List_node_base * const __first, - _List_node_base * const __last); - - void - reverse(); - - void - hook(_List_node_base * const __position); - - void - unhook(); - }; - - /// An actual node in the %list. - template<typename _Tp> - struct _List_node : public _List_node_base - { - ///< User's data. - _Tp _M_data; - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - template<typename... _Args> - _List_node(_Args&&... __args) - : _List_node_base(), _M_data(std::forward<_Args>(__args)...) { } -#endif - }; - - /** - * @brief A list::iterator. - * - * All the functions are op overloads. - */ - template<typename _Tp> - struct _List_iterator - { - typedef _List_iterator<_Tp> _Self; - typedef _List_node<_Tp> _Node; - - typedef ptrdiff_t difference_type; - typedef std::bidirectional_iterator_tag iterator_category; - typedef _Tp value_type; - typedef _Tp* pointer; - typedef _Tp& reference; - - _List_iterator() - : _M_node() { } - - explicit - _List_iterator(_List_node_base* __x) - : _M_node(__x) { } - - // Must downcast from List_node_base to _List_node to get to _M_data. - reference - operator*() const - { return static_cast<_Node*>(_M_node)->_M_data; } - - pointer - operator->() const - { return &static_cast<_Node*>(_M_node)->_M_data; } - - _Self& - operator++() - { - _M_node = _M_node->_M_next; - return *this; - } - - _Self - operator++(int) - { - _Self __tmp = *this; - _M_node = _M_node->_M_next; - return __tmp; - } - - _Self& - operator--() - { - _M_node = _M_node->_M_prev; - return *this; - } - - _Self - operator--(int) - { - _Self __tmp = *this; - _M_node = _M_node->_M_prev; - return __tmp; - } - - bool - operator==(const _Self& __x) const - { return _M_node == __x._M_node; } - - bool - operator!=(const _Self& __x) const - { return _M_node != __x._M_node; } - - // The only member points to the %list element. - _List_node_base* _M_node; - }; - - /** - * @brief A list::const_iterator. - * - * All the functions are op overloads. - */ - template<typename _Tp> - struct _List_const_iterator - { - typedef _List_const_iterator<_Tp> _Self; - typedef const _List_node<_Tp> _Node; - typedef _List_iterator<_Tp> iterator; - - typedef ptrdiff_t difference_type; - typedef std::bidirectional_iterator_tag iterator_category; - typedef _Tp value_type; - typedef const _Tp* pointer; - typedef const _Tp& reference; - - _List_const_iterator() - : _M_node() { } - - explicit - _List_const_iterator(const _List_node_base* __x) - : _M_node(__x) { } - - _List_const_iterator(const iterator& __x) - : _M_node(__x._M_node) { } - - // Must downcast from List_node_base to _List_node to get to - // _M_data. - reference - operator*() const - { return static_cast<_Node*>(_M_node)->_M_data; } - - pointer - operator->() const - { return &static_cast<_Node*>(_M_node)->_M_data; } - - _Self& - operator++() - { - _M_node = _M_node->_M_next; - return *this; - } - - _Self - operator++(int) - { - _Self __tmp = *this; - _M_node = _M_node->_M_next; - return __tmp; - } - - _Self& - operator--() - { - _M_node = _M_node->_M_prev; - return *this; - } - - _Self - operator--(int) - { - _Self __tmp = *this; - _M_node = _M_node->_M_prev; - return __tmp; - } - - bool - operator==(const _Self& __x) const - { return _M_node == __x._M_node; } - - bool - operator!=(const _Self& __x) const - { return _M_node != __x._M_node; } - - // The only member points to the %list element. - const _List_node_base* _M_node; - }; - - template<typename _Val> - inline bool - operator==(const _List_iterator<_Val>& __x, - const _List_const_iterator<_Val>& __y) - { return __x._M_node == __y._M_node; } - - template<typename _Val> - inline bool - operator!=(const _List_iterator<_Val>& __x, - const _List_const_iterator<_Val>& __y) - { return __x._M_node != __y._M_node; } - - - /// See bits/stl_deque.h's _Deque_base for an explanation. - template<typename _Tp, typename _Alloc> - class _List_base - { - protected: - // NOTA BENE - // The stored instance is not actually of "allocator_type"'s - // type. Instead we rebind the type to - // Allocator<List_node<Tp>>, which according to [20.1.5]/4 - // should probably be the same. List_node<Tp> is not the same - // size as Tp (it's two pointers larger), and specializations on - // Tp may go unused because List_node<Tp> is being bound - // instead. - // - // We put this to the test in the constructors and in - // get_allocator, where we use conversions between - // allocator_type and _Node_alloc_type. The conversion is - // required by table 32 in [20.1.5]. - typedef typename _Alloc::template rebind<_List_node<_Tp> >::other - _Node_alloc_type; - - typedef typename _Alloc::template rebind<_Tp>::other _Tp_alloc_type; - - struct _List_impl - : public _Node_alloc_type - { - _List_node_base _M_node; - - _List_impl() - : _Node_alloc_type(), _M_node() - { } - - _List_impl(const _Node_alloc_type& __a) - : _Node_alloc_type(__a), _M_node() - { } - }; - - _List_impl _M_impl; - - _List_node<_Tp>* - _M_get_node() - { return _M_impl._Node_alloc_type::allocate(1); } - - void - _M_put_node(_List_node<_Tp>* __p) - { _M_impl._Node_alloc_type::deallocate(__p, 1); } - - public: - typedef _Alloc allocator_type; - - _Node_alloc_type& - _M_get_Node_allocator() - { return *static_cast<_Node_alloc_type*>(&this->_M_impl); } - - const _Node_alloc_type& - _M_get_Node_allocator() const - { return *static_cast<const _Node_alloc_type*>(&this->_M_impl); } - - _Tp_alloc_type - _M_get_Tp_allocator() const - { return _Tp_alloc_type(_M_get_Node_allocator()); } - - allocator_type - get_allocator() const - { return allocator_type(_M_get_Node_allocator()); } - - _List_base() - : _M_impl() - { _M_init(); } - - _List_base(const allocator_type& __a) - : _M_impl(__a) - { _M_init(); } - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - _List_base(_List_base&& __x) - : _M_impl(__x._M_get_Node_allocator()) - { - _M_init(); - _List_node_base::swap(this->_M_impl._M_node, __x._M_impl._M_node); - } -#endif - - // This is what actually destroys the list. - ~_List_base() - { _M_clear(); } - - void - _M_clear(); - - void - _M_init() - { - this->_M_impl._M_node._M_next = &this->_M_impl._M_node; - this->_M_impl._M_node._M_prev = &this->_M_impl._M_node; - } - }; - - /** - * @brief A standard container with linear time access to elements, - * and fixed time insertion/deletion at any point in the sequence. - * - * @ingroup sequences - * - * Meets the requirements of a <a href="tables.html#65">container</a>, a - * <a href="tables.html#66">reversible container</a>, and a - * <a href="tables.html#67">sequence</a>, including the - * <a href="tables.html#68">optional sequence requirements</a> with the - * %exception of @c at and @c operator[]. - * - * This is a @e doubly @e linked %list. Traversal up and down the - * %list requires linear time, but adding and removing elements (or - * @e nodes) is done in constant time, regardless of where the - * change takes place. Unlike std::vector and std::deque, - * random-access iterators are not provided, so subscripting ( @c - * [] ) access is not allowed. For algorithms which only need - * sequential access, this lack makes no difference. - * - * Also unlike the other standard containers, std::list provides - * specialized algorithms %unique to linked lists, such as - * splicing, sorting, and in-place reversal. - * - * A couple points on memory allocation for list<Tp>: - * - * First, we never actually allocate a Tp, we allocate - * List_node<Tp>'s and trust [20.1.5]/4 to DTRT. This is to ensure - * that after elements from %list<X,Alloc1> are spliced into - * %list<X,Alloc2>, destroying the memory of the second %list is a - * valid operation, i.e., Alloc1 giveth and Alloc2 taketh away. - * - * Second, a %list conceptually represented as - * @code - * A <---> B <---> C <---> D - * @endcode - * is actually circular; a link exists between A and D. The %list - * class holds (as its only data member) a private list::iterator - * pointing to @e D, not to @e A! To get to the head of the %list, - * we start at the tail and move forward by one. When this member - * iterator's next/previous pointers refer to itself, the %list is - * %empty. - */ - template<typename _Tp, typename _Alloc = std::allocator<_Tp> > - class list : protected _List_base<_Tp, _Alloc> - { - // concept requirements - typedef typename _Alloc::value_type _Alloc_value_type; - __glibcxx_class_requires(_Tp, _SGIAssignableConcept) - __glibcxx_class_requires2(_Tp, _Alloc_value_type, _SameTypeConcept) - - typedef _List_base<_Tp, _Alloc> _Base; - typedef typename _Base::_Tp_alloc_type _Tp_alloc_type; - - public: - typedef _Tp value_type; - typedef typename _Tp_alloc_type::pointer pointer; - typedef typename _Tp_alloc_type::const_pointer const_pointer; - typedef typename _Tp_alloc_type::reference reference; - typedef typename _Tp_alloc_type::const_reference const_reference; - typedef _List_iterator<_Tp> iterator; - typedef _List_const_iterator<_Tp> const_iterator; - typedef std::reverse_iterator<const_iterator> const_reverse_iterator; - typedef std::reverse_iterator<iterator> reverse_iterator; - typedef size_t size_type; - typedef ptrdiff_t difference_type; - typedef _Alloc allocator_type; - - protected: - // Note that pointers-to-_Node's can be ctor-converted to - // iterator types. - typedef _List_node<_Tp> _Node; - - using _Base::_M_impl; - using _Base::_M_put_node; - using _Base::_M_get_node; - using _Base::_M_get_Tp_allocator; - using _Base::_M_get_Node_allocator; - - /** - * @param x An instance of user data. - * - * Allocates space for a new node and constructs a copy of @a x in it. - */ -#ifndef __GXX_EXPERIMENTAL_CXX0X__ - _Node* - _M_create_node(const value_type& __x) - { - _Node* __p = this->_M_get_node(); - __try - { - _M_get_Tp_allocator().construct(&__p->_M_data, __x); - } - __catch(...) - { - _M_put_node(__p); - __throw_exception_again; - } - return __p; - } -#else - template<typename... _Args> - _Node* - _M_create_node(_Args&&... __args) - { - _Node* __p = this->_M_get_node(); - __try - { - _M_get_Node_allocator().construct(__p, - std::forward<_Args>(__args)...); - } - __catch(...) - { - _M_put_node(__p); - __throw_exception_again; - } - return __p; - } -#endif - - public: - // [23.2.2.1] construct/copy/destroy - // (assign() and get_allocator() are also listed in this section) - /** - * @brief Default constructor creates no elements. - */ - list() - : _Base() { } - - /** - * @brief Creates a %list with no elements. - * @param a An allocator object. - */ - explicit - list(const allocator_type& __a) - : _Base(__a) { } - - /** - * @brief Creates a %list with copies of an exemplar element. - * @param n The number of elements to initially create. - * @param value An element to copy. - * @param a An allocator object. - * - * This constructor fills the %list with @a n copies of @a value. - */ - explicit - list(size_type __n, const value_type& __value = value_type(), - const allocator_type& __a = allocator_type()) - : _Base(__a) - { _M_fill_initialize(__n, __value); } - - /** - * @brief %List copy constructor. - * @param x A %list of identical element and allocator types. - * - * The newly-created %list uses a copy of the allocation object used - * by @a x. - */ - list(const list& __x) - : _Base(__x._M_get_Node_allocator()) - { _M_initialize_dispatch(__x.begin(), __x.end(), __false_type()); } - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - /** - * @brief %List move constructor. - * @param x A %list of identical element and allocator types. - * - * The newly-created %list contains the exact contents of @a x. - * The contents of @a x are a valid, but unspecified %list. - */ - list(list&& __x) - : _Base(std::forward<_Base>(__x)) { } - - /** - * @brief Builds a %list from an initializer_list - * @param l An initializer_list of value_type. - * @param a An allocator object. - * - * Create a %list consisting of copies of the elements in the - * initializer_list @a l. This is linear in l.size(). - */ - list(initializer_list<value_type> __l, - const allocator_type& __a = allocator_type()) - : _Base(__a) - { _M_initialize_dispatch(__l.begin(), __l.end(), __false_type()); } -#endif - - /** - * @brief Builds a %list from a range. - * @param first An input iterator. - * @param last An input iterator. - * @param a An allocator object. - * - * Create a %list consisting of copies of the elements from - * [@a first,@a last). This is linear in N (where N is - * distance(@a first,@a last)). - */ - template<typename _InputIterator> - list(_InputIterator __first, _InputIterator __last, - const allocator_type& __a = allocator_type()) - : _Base(__a) - { - // Check whether it's an integral type. If so, it's not an iterator. - typedef typename std::__is_integer<_InputIterator>::__type _Integral; - _M_initialize_dispatch(__first, __last, _Integral()); - } - - /** - * No explicit dtor needed as the _Base dtor takes care of - * things. The _Base 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 %List assignment operator. - * @param x A %list 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. - */ - list& - operator=(const list& __x); - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - /** - * @brief %List move assignment operator. - * @param x A %list of identical element and allocator types. - * - * The contents of @a x are moved into this %list (without copying). - * @a x is a valid, but unspecified %list - */ - list& - operator=(list&& __x) - { - // NB: DR 675. - this->clear(); - this->swap(__x); - return *this; - } - - /** - * @brief %List initializer list assignment operator. - * @param l An initializer_list of value_type. - * - * Replace the contents of the %list with copies of the elements - * in the initializer_list @a l. This is linear in l.size(). - */ - list& - operator=(initializer_list<value_type> __l) - { - this->assign(__l.begin(), __l.end()); - return *this; - } -#endif - - /** - * @brief Assigns a given value to a %list. - * @param n Number of elements to be assigned. - * @param val Value to be assigned. - * - * This function fills a %list with @a n copies of the given - * value. Note that the assignment completely changes the %list - * and that the resulting %list's size is the same as the number - * of elements assigned. Old data may be lost. - */ - void - assign(size_type __n, const value_type& __val) - { _M_fill_assign(__n, __val); } - - /** - * @brief Assigns a range to a %list. - * @param first An input iterator. - * @param last An input iterator. - * - * This function fills a %list with copies of the elements in the - * range [@a first,@a last). - * - * Note that the assignment completely changes the %list and - * that the resulting %list's size is the same as the number of - * elements assigned. Old data may be lost. - */ - template<typename _InputIterator> - void - assign(_InputIterator __first, _InputIterator __last) - { - // Check whether it's an integral type. If so, it's not an iterator. - typedef typename std::__is_integer<_InputIterator>::__type _Integral; - _M_assign_dispatch(__first, __last, _Integral()); - } - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - /** - * @brief Assigns an initializer_list to a %list. - * @param l An initializer_list of value_type. - * - * Replace the contents of the %list with copies of the elements - * in the initializer_list @a l. This is linear in l.size(). - */ - void - assign(initializer_list<value_type> __l) - { this->assign(__l.begin(), __l.end()); } -#endif - - /// Get a copy of the memory allocation object. - allocator_type - get_allocator() const - { return _Base::get_allocator(); } - - // iterators - /** - * Returns a read/write iterator that points to the first element in the - * %list. Iteration is done in ordinary element order. - */ - iterator - begin() - { return iterator(this->_M_impl._M_node._M_next); } - - /** - * Returns a read-only (constant) iterator that points to the - * first element in the %list. Iteration is done in ordinary - * element order. - */ - const_iterator - begin() const - { return const_iterator(this->_M_impl._M_node._M_next); } - - /** - * Returns a read/write iterator that points one past the last - * element in the %list. Iteration is done in ordinary element - * order. - */ - iterator - end() - { return iterator(&this->_M_impl._M_node); } - - /** - * Returns a read-only (constant) iterator that points one past - * the last element in the %list. Iteration is done in ordinary - * element order. - */ - const_iterator - end() const - { return const_iterator(&this->_M_impl._M_node); } - - /** - * Returns a read/write reverse iterator that points to the last - * element in the %list. Iteration is done in reverse element - * order. - */ - reverse_iterator - rbegin() - { return reverse_iterator(end()); } - - /** - * Returns a read-only (constant) reverse iterator that points to - * the last element in the %list. Iteration is done in reverse - * element order. - */ - const_reverse_iterator - rbegin() const - { return const_reverse_iterator(end()); } - - /** - * Returns a read/write reverse iterator that points to one - * before the first element in the %list. Iteration is done in - * reverse element order. - */ - reverse_iterator - rend() - { return reverse_iterator(begin()); } - - /** - * Returns a read-only (constant) reverse iterator that points to one - * before the first element in the %list. Iteration is done in reverse - * element order. - */ - const_reverse_iterator - rend() const - { return const_reverse_iterator(begin()); } - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - /** - * Returns a read-only (constant) iterator that points to the - * first element in the %list. Iteration is done in ordinary - * element order. - */ - const_iterator - cbegin() const - { return const_iterator(this->_M_impl._M_node._M_next); } - - /** - * Returns a read-only (constant) iterator that points one past - * the last element in the %list. Iteration is done in ordinary - * element order. - */ - const_iterator - cend() const - { return const_iterator(&this->_M_impl._M_node); } - - /** - * Returns a read-only (constant) reverse iterator that points to - * the last element in the %list. Iteration is done in reverse - * element order. - */ - const_reverse_iterator - crbegin() const - { return const_reverse_iterator(end()); } - - /** - * Returns a read-only (constant) reverse iterator that points to one - * before the first element in the %list. Iteration is done in reverse - * element order. - */ - const_reverse_iterator - crend() const - { return const_reverse_iterator(begin()); } -#endif - - // [23.2.2.2] capacity - /** - * Returns true if the %list is empty. (Thus begin() would equal - * end().) - */ - bool - empty() const - { return this->_M_impl._M_node._M_next == &this->_M_impl._M_node; } - - /** Returns the number of elements in the %list. */ - size_type - size() const - { return std::distance(begin(), end()); } - - /** Returns the size() of the largest possible %list. */ - size_type - max_size() const - { return _M_get_Node_allocator().max_size(); } - - /** - * @brief Resizes the %list to the specified number of elements. - * @param new_size Number of elements the %list should contain. - * @param x Data with which new elements should be populated. - * - * This function will %resize the %list to the specified number - * of elements. If the number is smaller than the %list's - * current size the %list is truncated, otherwise the %list is - * extended and new elements are populated with given data. - */ - void - resize(size_type __new_size, value_type __x = value_type()); - - // element access - /** - * Returns a read/write reference to the data at the first - * element of the %list. - */ - reference - front() - { return *begin(); } - - /** - * Returns a read-only (constant) reference to the data at the first - * element of the %list. - */ - const_reference - front() const - { return *begin(); } - - /** - * Returns a read/write reference to the data at the last element - * of the %list. - */ - reference - back() - { - iterator __tmp = end(); - --__tmp; - return *__tmp; - } - - /** - * Returns a read-only (constant) reference to the data at the last - * element of the %list. - */ - const_reference - back() const - { - const_iterator __tmp = end(); - --__tmp; - return *__tmp; - } - - // [23.2.2.3] modifiers - /** - * @brief Add data to the front of the %list. - * @param x Data to be added. - * - * This is a typical stack operation. The function creates an - * element at the front of the %list and assigns the given data - * to it. Due to the nature of a %list this operation can be - * done in constant time, and does not invalidate iterators and - * references. - */ - void - push_front(const value_type& __x) - { this->_M_insert(begin(), __x); } - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - void - push_front(value_type&& __x) - { this->_M_insert(begin(), std::move(__x)); } - - template<typename... _Args> - void - emplace_front(_Args&&... __args) - { this->_M_insert(begin(), std::forward<_Args>(__args)...); } -#endif - - /** - * @brief Removes first element. - * - * This is a typical stack operation. It shrinks the %list by - * one. Due to the nature of a %list this operation can be done - * in constant time, and only invalidates iterators/references to - * the element being removed. - * - * Note that no data is returned, and if the first element's data - * is needed, it should be retrieved before pop_front() is - * called. - */ - void - pop_front() - { this->_M_erase(begin()); } - - /** - * @brief Add data to the end of the %list. - * @param x Data to be added. - * - * This is a typical stack operation. The function creates an - * element at the end of the %list and assigns the given data to - * it. Due to the nature of a %list this operation can be done - * in constant time, and does not invalidate iterators and - * references. - */ - void - push_back(const value_type& __x) - { this->_M_insert(end(), __x); } - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - void - push_back(value_type&& __x) - { this->_M_insert(end(), std::move(__x)); } - - template<typename... _Args> - void - emplace_back(_Args&&... __args) - { this->_M_insert(end(), std::forward<_Args>(__args)...); } -#endif - - /** - * @brief Removes last element. - * - * This is a typical stack operation. It shrinks the %list by - * one. Due to the nature of a %list this operation can be done - * in constant time, and only invalidates iterators/references to - * the element being removed. - * - * Note that no data is returned, and if the last element's data - * is needed, it should be retrieved before pop_back() is called. - */ - void - pop_back() - { this->_M_erase(iterator(this->_M_impl._M_node._M_prev)); } - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - /** - * @brief Constructs object in %list before specified iterator. - * @param position A const_iterator into the %list. - * @param args Arguments. - * @return An iterator that points to the inserted data. - * - * This function will insert an object of type T constructed - * with T(std::forward<Args>(args)...) before the specified - * location. Due to the nature of a %list this operation can - * be done in constant time, and does not invalidate iterators - * and references. - */ - template<typename... _Args> - iterator - emplace(iterator __position, _Args&&... __args); -#endif - - /** - * @brief Inserts given value into %list before specified iterator. - * @param position An iterator into the %list. - * @param x Data to be inserted. - * @return An iterator that points to the inserted data. - * - * This function will insert a copy of the given value before - * the specified location. Due to the nature of a %list this - * operation can be done in constant time, and does not - * invalidate iterators and references. - */ - iterator - insert(iterator __position, const value_type& __x); - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - /** - * @brief Inserts given rvalue into %list before specified iterator. - * @param position An iterator into the %list. - * @param x Data to be inserted. - * @return An iterator that points to the inserted data. - * - * This function will insert a copy of the given rvalue before - * the specified location. Due to the nature of a %list this - * operation can be done in constant time, and does not - * invalidate iterators and references. - */ - iterator - insert(iterator __position, value_type&& __x) - { return emplace(__position, std::move(__x)); } - - /** - * @brief Inserts the contents of an initializer_list into %list - * before specified iterator. - * @param p An iterator into the %list. - * @param l An initializer_list of value_type. - * - * This function will insert copies of the data in the - * initializer_list @a l into the %list before the location - * specified by @a p. - * - * This operation is linear in the number of elements inserted and - * does not invalidate iterators and references. - */ - void - insert(iterator __p, initializer_list<value_type> __l) - { this->insert(__p, __l.begin(), __l.end()); } -#endif - - /** - * @brief Inserts a number of copies of given data into the %list. - * @param position An iterator into the %list. - * @param n Number of elements to be inserted. - * @param x Data to be inserted. - * - * This function will insert a specified number of copies of the - * given data before the location specified by @a position. - * - * This operation is linear in the number of elements inserted and - * does not invalidate iterators and references. - */ - void - insert(iterator __position, size_type __n, const value_type& __x) - { - list __tmp(__n, __x, _M_get_Node_allocator()); - splice(__position, __tmp); - } - - /** - * @brief Inserts a range into the %list. - * @param position An iterator into the %list. - * @param first An input iterator. - * @param last An input iterator. - * - * This function will insert copies of the data in the range [@a - * first,@a last) into the %list before the location specified by - * @a position. - * - * This operation is linear in the number of elements inserted and - * does not invalidate iterators and references. - */ - template<typename _InputIterator> - void - insert(iterator __position, _InputIterator __first, - _InputIterator __last) - { - list __tmp(__first, __last, _M_get_Node_allocator()); - splice(__position, __tmp); - } - - /** - * @brief Remove element at given position. - * @param position Iterator pointing to element to be erased. - * @return An iterator pointing to the next element (or end()). - * - * This function will erase the element at the given position and thus - * shorten the %list by one. - * - * Due to the nature of a %list this operation can be done in - * constant time, and only invalidates iterators/references to - * the element being removed. The user is also cautioned 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(iterator __position); - - /** - * @brief Remove a range of elements. - * @param first Iterator pointing to the first element to be erased. - * @param last Iterator pointing to one past the last element to be - * erased. - * @return An iterator pointing to the element pointed to by @a last - * prior to erasing (or end()). - * - * This function will erase the elements in the range @a - * [first,last) and shorten the %list accordingly. - * - * This operation is linear time in the size of the range and only - * invalidates iterators/references to the element being removed. - * The user is also cautioned 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. - */ - iterator - erase(iterator __first, iterator __last) - { - while (__first != __last) - __first = erase(__first); - return __last; - } - - /** - * @brief Swaps data with another %list. - * @param x A %list of the same element and allocator types. - * - * This exchanges the elements between two lists in constant - * time. Note that the global std::swap() function is - * specialized such that std::swap(l1,l2) will feed to this - * function. - */ - void - swap(list& __x) - { - _List_node_base::swap(this->_M_impl._M_node, __x._M_impl._M_node); - - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 431. Swapping containers with unequal allocators. - std::__alloc_swap<typename _Base::_Node_alloc_type>:: - _S_do_it(_M_get_Node_allocator(), __x._M_get_Node_allocator()); - } - - /** - * Erases all the elements. 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() - { - _Base::_M_clear(); - _Base::_M_init(); - } - - // [23.2.2.4] list operations - /** - * @brief Insert contents of another %list. - * @param position Iterator referencing the element to insert before. - * @param x Source list. - * - * The elements of @a x are inserted in constant time in front of - * the element referenced by @a position. @a x becomes an empty - * list. - * - * Requires this != @a x. - */ - void -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - splice(iterator __position, list&& __x) -#else - splice(iterator __position, list& __x) -#endif - { - if (!__x.empty()) - { - _M_check_equal_allocators(__x); - - this->_M_transfer(__position, __x.begin(), __x.end()); - } - } - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - void - splice(iterator __position, list& __x) - { splice(__position, std::move(__x)); } -#endif - - /** - * @brief Insert element from another %list. - * @param position Iterator referencing the element to insert before. - * @param x Source list. - * @param i Iterator referencing the element to move. - * - * Removes the element in list @a x referenced by @a i and - * inserts it into the current list before @a position. - */ - void -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - splice(iterator __position, list&& __x, iterator __i) -#else - splice(iterator __position, list& __x, iterator __i) -#endif - { - iterator __j = __i; - ++__j; - if (__position == __i || __position == __j) - return; - - if (this != &__x) - _M_check_equal_allocators(__x); - - this->_M_transfer(__position, __i, __j); - } - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - void - splice(iterator __position, list& __x, iterator __i) - { splice(__position, std::move(__x), __i); } -#endif - - /** - * @brief Insert range from another %list. - * @param position Iterator referencing the element to insert before. - * @param x Source list. - * @param first Iterator referencing the start of range in x. - * @param last Iterator referencing the end of range in x. - * - * Removes elements in the range [first,last) and inserts them - * before @a position in constant time. - * - * Undefined if @a position is in [first,last). - */ - void -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - splice(iterator __position, list&& __x, iterator __first, - iterator __last) -#else - splice(iterator __position, list& __x, iterator __first, - iterator __last) -#endif - { - if (__first != __last) - { - if (this != &__x) - _M_check_equal_allocators(__x); - - this->_M_transfer(__position, __first, __last); - } - } - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - void - splice(iterator __position, list& __x, iterator __first, - iterator __last) - { splice(__position, std::move(__x), __first, __last); } -#endif - - /** - * @brief Remove all elements equal to value. - * @param value The value to remove. - * - * Removes every element in the list equal to @a value. - * Remaining elements stay in list order. 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 - remove(const _Tp& __value); - - /** - * @brief Remove all elements satisfying a predicate. - * @param Predicate Unary predicate function or object. - * - * Removes every element in the list for which the predicate - * returns true. Remaining elements stay in list order. 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. - */ - template<typename _Predicate> - void - remove_if(_Predicate); - - /** - * @brief Remove consecutive duplicate elements. - * - * For each consecutive set of elements with the same value, - * remove all but the first one. Remaining elements stay in - * list order. 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 - unique(); - - /** - * @brief Remove consecutive elements satisfying a predicate. - * @param BinaryPredicate Binary predicate function or object. - * - * For each consecutive set of elements [first,last) that - * satisfy predicate(first,i) where i is an iterator in - * [first,last), remove all but the first one. Remaining - * elements stay in list order. 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. - */ - template<typename _BinaryPredicate> - void - unique(_BinaryPredicate); - - /** - * @brief Merge sorted lists. - * @param x Sorted list to merge. - * - * Assumes that both @a x and this list are sorted according to - * operator<(). Merges elements of @a x into this list in - * sorted order, leaving @a x empty when complete. Elements in - * this list precede elements in @a x that are equal. - */ - void -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - merge(list&& __x); - - void - merge(list& __x) - { merge(std::move(__x)); } -#else - merge(list& __x); -#endif - - /** - * @brief Merge sorted lists according to comparison function. - * @param x Sorted list to merge. - * @param StrictWeakOrdering Comparison function defining - * sort order. - * - * Assumes that both @a x and this list are sorted according to - * StrictWeakOrdering. Merges elements of @a x into this list - * in sorted order, leaving @a x empty when complete. Elements - * in this list precede elements in @a x that are equivalent - * according to StrictWeakOrdering(). - */ - template<typename _StrictWeakOrdering> - void -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - merge(list&&, _StrictWeakOrdering); - - template<typename _StrictWeakOrdering> - void - merge(list& __l, _StrictWeakOrdering __comp) - { merge(std::move(__l), __comp); } -#else - merge(list&, _StrictWeakOrdering); -#endif - - /** - * @brief Reverse the elements in list. - * - * Reverse the order of elements in the list in linear time. - */ - void - reverse() - { this->_M_impl._M_node.reverse(); } - - /** - * @brief Sort the elements. - * - * Sorts the elements of this list in NlogN time. Equivalent - * elements remain in list order. - */ - void - sort(); - - /** - * @brief Sort the elements according to comparison function. - * - * Sorts the elements of this list in NlogN time. Equivalent - * elements remain in list order. - */ - template<typename _StrictWeakOrdering> - void - sort(_StrictWeakOrdering); - - protected: - // Internal constructor functions follow. - - // Called by the range constructor to implement [23.1.1]/9 - - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 438. Ambiguity in the "do the right thing" clause - template<typename _Integer> - void - _M_initialize_dispatch(_Integer __n, _Integer __x, __true_type) - { _M_fill_initialize(static_cast<size_type>(__n), __x); } - - // Called by the range constructor to implement [23.1.1]/9 - template<typename _InputIterator> - void - _M_initialize_dispatch(_InputIterator __first, _InputIterator __last, - __false_type) - { - for (; __first != __last; ++__first) - push_back(*__first); - } - - // Called by list(n,v,a), and the range constructor when it turns out - // to be the same thing. - void - _M_fill_initialize(size_type __n, const value_type& __x) - { - for (; __n > 0; --__n) - push_back(__x); - } - - - // Internal assign functions follow. - - // Called by the range assign to implement [23.1.1]/9 - - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 438. Ambiguity in the "do the right thing" clause - template<typename _Integer> - void - _M_assign_dispatch(_Integer __n, _Integer __val, __true_type) - { _M_fill_assign(__n, __val); } - - // Called by the range assign to implement [23.1.1]/9 - template<typename _InputIterator> - void - _M_assign_dispatch(_InputIterator __first, _InputIterator __last, - __false_type); - - // Called by assign(n,t), and the range assign when it turns out - // to be the same thing. - void - _M_fill_assign(size_type __n, const value_type& __val); - - - // Moves the elements from [first,last) before position. - void - _M_transfer(iterator __position, iterator __first, iterator __last) - { __position._M_node->transfer(__first._M_node, __last._M_node); } - - // Inserts new element at position given and with value given. -#ifndef __GXX_EXPERIMENTAL_CXX0X__ - void - _M_insert(iterator __position, const value_type& __x) - { - _Node* __tmp = _M_create_node(__x); - __tmp->hook(__position._M_node); - } -#else - template<typename... _Args> - void - _M_insert(iterator __position, _Args&&... __args) - { - _Node* __tmp = _M_create_node(std::forward<_Args>(__args)...); - __tmp->hook(__position._M_node); - } -#endif - - // Erases element at position given. - void - _M_erase(iterator __position) - { - __position._M_node->unhook(); - _Node* __n = static_cast<_Node*>(__position._M_node); -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - _M_get_Node_allocator().destroy(__n); -#else - _M_get_Tp_allocator().destroy(&__n->_M_data); -#endif - _M_put_node(__n); - } - - // To implement the splice (and merge) bits of N1599. - void - _M_check_equal_allocators(list& __x) - { - if (std::__alloc_neq<typename _Base::_Node_alloc_type>:: - _S_do_it(_M_get_Node_allocator(), __x._M_get_Node_allocator())) - __throw_runtime_error(__N("list::_M_check_equal_allocators")); - } - }; - - /** - * @brief List equality comparison. - * @param x A %list. - * @param y A %list of the same type as @a x. - * @return True iff the size and elements of the lists are equal. - * - * This is an equivalence relation. It is linear in the size of - * the lists. Lists are considered equivalent if their sizes are - * equal, and if corresponding elements compare equal. - */ - template<typename _Tp, typename _Alloc> - inline bool - operator==(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) - { - typedef typename list<_Tp, _Alloc>::const_iterator const_iterator; - const_iterator __end1 = __x.end(); - const_iterator __end2 = __y.end(); - - const_iterator __i1 = __x.begin(); - const_iterator __i2 = __y.begin(); - while (__i1 != __end1 && __i2 != __end2 && *__i1 == *__i2) - { - ++__i1; - ++__i2; - } - return __i1 == __end1 && __i2 == __end2; - } - - /** - * @brief List ordering relation. - * @param x A %list. - * @param y A %list 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 - * lists. The elements must be comparable with @c <. - * - * See std::lexicographical_compare() for how the determination is made. - */ - template<typename _Tp, typename _Alloc> - inline bool - operator<(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) - { return std::lexicographical_compare(__x.begin(), __x.end(), - __y.begin(), __y.end()); } - - /// Based on operator== - template<typename _Tp, typename _Alloc> - inline bool - operator!=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) - { return !(__x == __y); } - - /// Based on operator< - template<typename _Tp, typename _Alloc> - inline bool - operator>(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) - { return __y < __x; } - - /// Based on operator< - template<typename _Tp, typename _Alloc> - inline bool - operator<=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) - { return !(__y < __x); } - - /// Based on operator< - template<typename _Tp, typename _Alloc> - inline bool - operator>=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) - { return !(__x < __y); } - - /// See std::list::swap(). - template<typename _Tp, typename _Alloc> - inline void - swap(list<_Tp, _Alloc>& __x, list<_Tp, _Alloc>& __y) - { __x.swap(__y); } - -#ifdef __GXX_EXPERIMENTAL_CXX0X__ - template<typename _Tp, typename _Alloc> - inline void - swap(list<_Tp, _Alloc>&& __x, list<_Tp, _Alloc>& __y) - { __x.swap(__y); } - - template<typename _Tp, typename _Alloc> - inline void - swap(list<_Tp, _Alloc>& __x, list<_Tp, _Alloc>&& __y) - { __x.swap(__y); } -#endif - -_GLIBCXX_END_NESTED_NAMESPACE - -#endif /* _STL_LIST_H */ |