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2128 lines
67 KiB
2128 lines
67 KiB
// List implementation -*- C++ -*-
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// Copyright (C) 2001-2021 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*
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* Copyright (c) 1996,1997
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* Silicon Graphics Computer Systems, Inc.
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*/
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/** @file bits/stl_list.h
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* This is an internal header file, included by other library headers.
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* Do not attempt to use it directly. @headername{list}
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*/
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#ifndef _STL_LIST_H
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#define _STL_LIST_H 1
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#include <bits/concept_check.h>
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#include <ext/alloc_traits.h>
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#if __cplusplus >= 201103L
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#include <initializer_list>
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#include <bits/allocated_ptr.h>
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#include <ext/aligned_buffer.h>
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#endif
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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namespace __detail
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{
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// Supporting structures are split into common and templated
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// types; the latter publicly inherits from the former in an
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// effort to reduce code duplication. This results in some
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// "needless" static_cast'ing later on, but it's all safe
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// downcasting.
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/// Common part of a node in the %list.
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struct _List_node_base
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{
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_List_node_base* _M_next;
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_List_node_base* _M_prev;
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static void
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swap(_List_node_base& __x, _List_node_base& __y) _GLIBCXX_USE_NOEXCEPT;
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void
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_M_transfer(_List_node_base* const __first,
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_List_node_base* const __last) _GLIBCXX_USE_NOEXCEPT;
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void
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_M_reverse() _GLIBCXX_USE_NOEXCEPT;
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void
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_M_hook(_List_node_base* const __position) _GLIBCXX_USE_NOEXCEPT;
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void
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_M_unhook() _GLIBCXX_USE_NOEXCEPT;
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};
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/// The %list node header.
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struct _List_node_header : public _List_node_base
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{
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#if _GLIBCXX_USE_CXX11_ABI
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std::size_t _M_size;
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#endif
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_List_node_header() _GLIBCXX_NOEXCEPT
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{ _M_init(); }
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#if __cplusplus >= 201103L
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_List_node_header(_List_node_header&& __x) noexcept
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: _List_node_base{ __x._M_next, __x._M_prev }
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# if _GLIBCXX_USE_CXX11_ABI
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, _M_size(__x._M_size)
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# endif
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{
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if (__x._M_base()->_M_next == __x._M_base())
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this->_M_next = this->_M_prev = this;
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else
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{
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this->_M_next->_M_prev = this->_M_prev->_M_next = this->_M_base();
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__x._M_init();
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}
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}
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void
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_M_move_nodes(_List_node_header&& __x)
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{
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_List_node_base* const __xnode = __x._M_base();
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if (__xnode->_M_next == __xnode)
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_M_init();
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else
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{
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_List_node_base* const __node = this->_M_base();
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__node->_M_next = __xnode->_M_next;
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__node->_M_prev = __xnode->_M_prev;
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__node->_M_next->_M_prev = __node->_M_prev->_M_next = __node;
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# if _GLIBCXX_USE_CXX11_ABI
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_M_size = __x._M_size;
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# endif
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__x._M_init();
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}
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}
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#endif
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void
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_M_init() _GLIBCXX_NOEXCEPT
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{
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this->_M_next = this->_M_prev = this;
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#if _GLIBCXX_USE_CXX11_ABI
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this->_M_size = 0;
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#endif
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}
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private:
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_List_node_base* _M_base() { return this; }
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};
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} // namespace detail
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_GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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/// An actual node in the %list.
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template<typename _Tp>
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struct _List_node : public __detail::_List_node_base
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{
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#if __cplusplus >= 201103L
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__gnu_cxx::__aligned_membuf<_Tp> _M_storage;
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_Tp* _M_valptr() { return _M_storage._M_ptr(); }
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_Tp const* _M_valptr() const { return _M_storage._M_ptr(); }
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#else
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_Tp _M_data;
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_Tp* _M_valptr() { return std::__addressof(_M_data); }
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_Tp const* _M_valptr() const { return std::__addressof(_M_data); }
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#endif
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};
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/**
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* @brief A list::iterator.
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*
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* All the functions are op overloads.
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*/
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template<typename _Tp>
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struct _List_iterator
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{
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typedef _List_iterator<_Tp> _Self;
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typedef _List_node<_Tp> _Node;
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typedef ptrdiff_t difference_type;
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typedef std::bidirectional_iterator_tag iterator_category;
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typedef _Tp value_type;
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typedef _Tp* pointer;
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typedef _Tp& reference;
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_List_iterator() _GLIBCXX_NOEXCEPT
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: _M_node() { }
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explicit
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_List_iterator(__detail::_List_node_base* __x) _GLIBCXX_NOEXCEPT
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: _M_node(__x) { }
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_Self
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_M_const_cast() const _GLIBCXX_NOEXCEPT
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{ return *this; }
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// Must downcast from _List_node_base to _List_node to get to value.
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reference
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operator*() const _GLIBCXX_NOEXCEPT
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{ return *static_cast<_Node*>(_M_node)->_M_valptr(); }
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pointer
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operator->() const _GLIBCXX_NOEXCEPT
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{ return static_cast<_Node*>(_M_node)->_M_valptr(); }
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_Self&
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operator++() _GLIBCXX_NOEXCEPT
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{
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_M_node = _M_node->_M_next;
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return *this;
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}
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_Self
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operator++(int) _GLIBCXX_NOEXCEPT
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{
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_Self __tmp = *this;
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_M_node = _M_node->_M_next;
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return __tmp;
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}
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_Self&
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operator--() _GLIBCXX_NOEXCEPT
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{
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_M_node = _M_node->_M_prev;
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return *this;
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}
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_Self
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operator--(int) _GLIBCXX_NOEXCEPT
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{
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_Self __tmp = *this;
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_M_node = _M_node->_M_prev;
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return __tmp;
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}
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friend bool
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operator==(const _Self& __x, const _Self& __y) _GLIBCXX_NOEXCEPT
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{ return __x._M_node == __y._M_node; }
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#if __cpp_impl_three_way_comparison < 201907L
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friend bool
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operator!=(const _Self& __x, const _Self& __y) _GLIBCXX_NOEXCEPT
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{ return __x._M_node != __y._M_node; }
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#endif
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// The only member points to the %list element.
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__detail::_List_node_base* _M_node;
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};
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/**
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* @brief A list::const_iterator.
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*
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* All the functions are op overloads.
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*/
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template<typename _Tp>
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struct _List_const_iterator
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{
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typedef _List_const_iterator<_Tp> _Self;
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typedef const _List_node<_Tp> _Node;
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typedef _List_iterator<_Tp> iterator;
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typedef ptrdiff_t difference_type;
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typedef std::bidirectional_iterator_tag iterator_category;
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typedef _Tp value_type;
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typedef const _Tp* pointer;
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typedef const _Tp& reference;
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_List_const_iterator() _GLIBCXX_NOEXCEPT
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: _M_node() { }
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explicit
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_List_const_iterator(const __detail::_List_node_base* __x)
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_GLIBCXX_NOEXCEPT
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: _M_node(__x) { }
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_List_const_iterator(const iterator& __x) _GLIBCXX_NOEXCEPT
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: _M_node(__x._M_node) { }
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iterator
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_M_const_cast() const _GLIBCXX_NOEXCEPT
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{ return iterator(const_cast<__detail::_List_node_base*>(_M_node)); }
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// Must downcast from List_node_base to _List_node to get to value.
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reference
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operator*() const _GLIBCXX_NOEXCEPT
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{ return *static_cast<_Node*>(_M_node)->_M_valptr(); }
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pointer
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operator->() const _GLIBCXX_NOEXCEPT
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{ return static_cast<_Node*>(_M_node)->_M_valptr(); }
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_Self&
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operator++() _GLIBCXX_NOEXCEPT
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{
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_M_node = _M_node->_M_next;
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return *this;
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}
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_Self
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operator++(int) _GLIBCXX_NOEXCEPT
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{
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_Self __tmp = *this;
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_M_node = _M_node->_M_next;
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return __tmp;
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}
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_Self&
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operator--() _GLIBCXX_NOEXCEPT
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{
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_M_node = _M_node->_M_prev;
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return *this;
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}
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_Self
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operator--(int) _GLIBCXX_NOEXCEPT
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{
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_Self __tmp = *this;
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_M_node = _M_node->_M_prev;
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return __tmp;
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}
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friend bool
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operator==(const _Self& __x, const _Self& __y) _GLIBCXX_NOEXCEPT
|
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{ return __x._M_node == __y._M_node; }
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|
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#if __cpp_impl_three_way_comparison < 201907L
|
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friend bool
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operator!=(const _Self& __x, const _Self& __y) _GLIBCXX_NOEXCEPT
|
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{ return __x._M_node != __y._M_node; }
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#endif
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// The only member points to the %list element.
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const __detail::_List_node_base* _M_node;
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};
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_GLIBCXX_BEGIN_NAMESPACE_CXX11
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/// See bits/stl_deque.h's _Deque_base for an explanation.
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template<typename _Tp, typename _Alloc>
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class _List_base
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{
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protected:
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typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template
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rebind<_Tp>::other _Tp_alloc_type;
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typedef __gnu_cxx::__alloc_traits<_Tp_alloc_type> _Tp_alloc_traits;
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typedef typename _Tp_alloc_traits::template
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rebind<_List_node<_Tp> >::other _Node_alloc_type;
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typedef __gnu_cxx::__alloc_traits<_Node_alloc_type> _Node_alloc_traits;
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#if !_GLIBCXX_INLINE_VERSION
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static size_t
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_S_distance(const __detail::_List_node_base* __first,
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const __detail::_List_node_base* __last)
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{
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size_t __n = 0;
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while (__first != __last)
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{
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__first = __first->_M_next;
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++__n;
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}
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return __n;
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}
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#endif
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struct _List_impl
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: public _Node_alloc_type
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{
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__detail::_List_node_header _M_node;
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_List_impl() _GLIBCXX_NOEXCEPT_IF(
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is_nothrow_default_constructible<_Node_alloc_type>::value)
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: _Node_alloc_type()
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{ }
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_List_impl(const _Node_alloc_type& __a) _GLIBCXX_NOEXCEPT
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: _Node_alloc_type(__a)
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{ }
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#if __cplusplus >= 201103L
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_List_impl(_List_impl&&) = default;
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_List_impl(_Node_alloc_type&& __a, _List_impl&& __x)
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: _Node_alloc_type(std::move(__a)), _M_node(std::move(__x._M_node))
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{ }
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_List_impl(_Node_alloc_type&& __a) noexcept
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: _Node_alloc_type(std::move(__a))
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{ }
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#endif
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};
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_List_impl _M_impl;
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#if _GLIBCXX_USE_CXX11_ABI
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size_t _M_get_size() const { return _M_impl._M_node._M_size; }
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void _M_set_size(size_t __n) { _M_impl._M_node._M_size = __n; }
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void _M_inc_size(size_t __n) { _M_impl._M_node._M_size += __n; }
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void _M_dec_size(size_t __n) { _M_impl._M_node._M_size -= __n; }
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# if !_GLIBCXX_INLINE_VERSION
|
|
size_t
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_M_distance(const __detail::_List_node_base* __first,
|
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const __detail::_List_node_base* __last) const
|
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{ return _S_distance(__first, __last); }
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// return the stored size
|
|
size_t _M_node_count() const { return _M_get_size(); }
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|
# endif
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|
#else
|
|
// dummy implementations used when the size is not stored
|
|
size_t _M_get_size() const { return 0; }
|
|
void _M_set_size(size_t) { }
|
|
void _M_inc_size(size_t) { }
|
|
void _M_dec_size(size_t) { }
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|
|
|
# if !_GLIBCXX_INLINE_VERSION
|
|
size_t _M_distance(const void*, const void*) const { return 0; }
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|
|
// count the number of nodes
|
|
size_t _M_node_count() const
|
|
{
|
|
return _S_distance(_M_impl._M_node._M_next,
|
|
std::__addressof(_M_impl._M_node));
|
|
}
|
|
# endif
|
|
#endif
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|
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typename _Node_alloc_traits::pointer
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_M_get_node()
|
|
{ return _Node_alloc_traits::allocate(_M_impl, 1); }
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|
|
|
void
|
|
_M_put_node(typename _Node_alloc_traits::pointer __p) _GLIBCXX_NOEXCEPT
|
|
{ _Node_alloc_traits::deallocate(_M_impl, __p, 1); }
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|
|
|
public:
|
|
typedef _Alloc allocator_type;
|
|
|
|
_Node_alloc_type&
|
|
_M_get_Node_allocator() _GLIBCXX_NOEXCEPT
|
|
{ return _M_impl; }
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|
|
|
const _Node_alloc_type&
|
|
_M_get_Node_allocator() const _GLIBCXX_NOEXCEPT
|
|
{ return _M_impl; }
|
|
|
|
#if __cplusplus >= 201103L
|
|
_List_base() = default;
|
|
#else
|
|
_List_base() { }
|
|
#endif
|
|
|
|
_List_base(const _Node_alloc_type& __a) _GLIBCXX_NOEXCEPT
|
|
: _M_impl(__a)
|
|
{ }
|
|
|
|
#if __cplusplus >= 201103L
|
|
_List_base(_List_base&&) = default;
|
|
|
|
# if !_GLIBCXX_INLINE_VERSION
|
|
_List_base(_List_base&& __x, _Node_alloc_type&& __a)
|
|
: _M_impl(std::move(__a))
|
|
{
|
|
if (__x._M_get_Node_allocator() == _M_get_Node_allocator())
|
|
_M_move_nodes(std::move(__x));
|
|
// else caller must move individual elements.
|
|
}
|
|
# endif
|
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|
|
// Used when allocator is_always_equal.
|
|
_List_base(_Node_alloc_type&& __a, _List_base&& __x)
|
|
: _M_impl(std::move(__a), std::move(__x._M_impl))
|
|
{ }
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|
|
// Used when allocator !is_always_equal.
|
|
_List_base(_Node_alloc_type&& __a)
|
|
: _M_impl(std::move(__a))
|
|
{ }
|
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|
|
void
|
|
_M_move_nodes(_List_base&& __x)
|
|
{ _M_impl._M_node._M_move_nodes(std::move(__x._M_impl._M_node)); }
|
|
#endif
|
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|
|
// This is what actually destroys the list.
|
|
~_List_base() _GLIBCXX_NOEXCEPT
|
|
{ _M_clear(); }
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|
|
void
|
|
_M_clear() _GLIBCXX_NOEXCEPT;
|
|
|
|
void
|
|
_M_init() _GLIBCXX_NOEXCEPT
|
|
{ this->_M_impl._M_node._M_init(); }
|
|
};
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|
|
/**
|
|
* @brief A standard container with linear time access to elements,
|
|
* and fixed time insertion/deletion at any point in the sequence.
|
|
*
|
|
* @ingroup sequences
|
|
*
|
|
* @tparam _Tp Type of element.
|
|
* @tparam _Alloc Allocator type, defaults to allocator<_Tp>.
|
|
*
|
|
* 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>
|
|
{
|
|
#ifdef _GLIBCXX_CONCEPT_CHECKS
|
|
// concept requirements
|
|
typedef typename _Alloc::value_type _Alloc_value_type;
|
|
# if __cplusplus < 201103L
|
|
__glibcxx_class_requires(_Tp, _SGIAssignableConcept)
|
|
# endif
|
|
__glibcxx_class_requires2(_Tp, _Alloc_value_type, _SameTypeConcept)
|
|
#endif
|
|
|
|
#if __cplusplus >= 201103L
|
|
static_assert(is_same<typename remove_cv<_Tp>::type, _Tp>::value,
|
|
"std::list must have a non-const, non-volatile value_type");
|
|
# if __cplusplus > 201703L || defined __STRICT_ANSI__
|
|
static_assert(is_same<typename _Alloc::value_type, _Tp>::value,
|
|
"std::list must have the same value_type as its allocator");
|
|
# endif
|
|
#endif
|
|
|
|
typedef _List_base<_Tp, _Alloc> _Base;
|
|
typedef typename _Base::_Tp_alloc_type _Tp_alloc_type;
|
|
typedef typename _Base::_Tp_alloc_traits _Tp_alloc_traits;
|
|
typedef typename _Base::_Node_alloc_type _Node_alloc_type;
|
|
typedef typename _Base::_Node_alloc_traits _Node_alloc_traits;
|
|
|
|
public:
|
|
typedef _Tp value_type;
|
|
typedef typename _Tp_alloc_traits::pointer pointer;
|
|
typedef typename _Tp_alloc_traits::const_pointer const_pointer;
|
|
typedef typename _Tp_alloc_traits::reference reference;
|
|
typedef typename _Tp_alloc_traits::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_Node_allocator;
|
|
|
|
/**
|
|
* @param __args An instance of user data.
|
|
*
|
|
* Allocates space for a new node and constructs a copy of
|
|
* @a __args in it.
|
|
*/
|
|
#if __cplusplus < 201103L
|
|
_Node*
|
|
_M_create_node(const value_type& __x)
|
|
{
|
|
_Node* __p = this->_M_get_node();
|
|
__try
|
|
{
|
|
_Tp_alloc_type __alloc(_M_get_Node_allocator());
|
|
__alloc.construct(__p->_M_valptr(), __x);
|
|
}
|
|
__catch(...)
|
|
{
|
|
_M_put_node(__p);
|
|
__throw_exception_again;
|
|
}
|
|
return __p;
|
|
}
|
|
#else
|
|
template<typename... _Args>
|
|
_Node*
|
|
_M_create_node(_Args&&... __args)
|
|
{
|
|
auto __p = this->_M_get_node();
|
|
auto& __alloc = _M_get_Node_allocator();
|
|
__allocated_ptr<_Node_alloc_type> __guard{__alloc, __p};
|
|
_Node_alloc_traits::construct(__alloc, __p->_M_valptr(),
|
|
std::forward<_Args>(__args)...);
|
|
__guard = nullptr;
|
|
return __p;
|
|
}
|
|
#endif
|
|
|
|
#if _GLIBCXX_USE_CXX11_ABI
|
|
static size_t
|
|
_S_distance(const_iterator __first, const_iterator __last)
|
|
{ return std::distance(__first, __last); }
|
|
|
|
// return the stored size
|
|
size_t
|
|
_M_node_count() const
|
|
{ return this->_M_get_size(); }
|
|
#else
|
|
// dummy implementations used when the size is not stored
|
|
static size_t
|
|
_S_distance(const_iterator, const_iterator)
|
|
{ return 0; }
|
|
|
|
// count the number of nodes
|
|
size_t
|
|
_M_node_count() const
|
|
{ return std::distance(begin(), end()); }
|
|
#endif
|
|
|
|
public:
|
|
// [23.2.2.1] construct/copy/destroy
|
|
// (assign() and get_allocator() are also listed in this section)
|
|
|
|
/**
|
|
* @brief Creates a %list with no elements.
|
|
*/
|
|
#if __cplusplus >= 201103L
|
|
list() = default;
|
|
#else
|
|
list() { }
|
|
#endif
|
|
|
|
/**
|
|
* @brief Creates a %list with no elements.
|
|
* @param __a An allocator object.
|
|
*/
|
|
explicit
|
|
list(const allocator_type& __a) _GLIBCXX_NOEXCEPT
|
|
: _Base(_Node_alloc_type(__a)) { }
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @brief Creates a %list with default constructed elements.
|
|
* @param __n The number of elements to initially create.
|
|
* @param __a An allocator object.
|
|
*
|
|
* This constructor fills the %list with @a __n default
|
|
* constructed elements.
|
|
*/
|
|
explicit
|
|
list(size_type __n, const allocator_type& __a = allocator_type())
|
|
: _Base(_Node_alloc_type(__a))
|
|
{ _M_default_initialize(__n); }
|
|
|
|
/**
|
|
* @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.
|
|
*/
|
|
list(size_type __n, const value_type& __value,
|
|
const allocator_type& __a = allocator_type())
|
|
: _Base(_Node_alloc_type(__a))
|
|
{ _M_fill_initialize(__n, __value); }
|
|
#else
|
|
/**
|
|
* @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(_Node_alloc_type(__a))
|
|
{ _M_fill_initialize(__n, __value); }
|
|
#endif
|
|
|
|
/**
|
|
* @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 (unless the allocator traits dictate a different object).
|
|
*/
|
|
list(const list& __x)
|
|
: _Base(_Node_alloc_traits::
|
|
_S_select_on_copy(__x._M_get_Node_allocator()))
|
|
{ _M_initialize_dispatch(__x.begin(), __x.end(), __false_type()); }
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @brief %List move constructor.
|
|
*
|
|
* The newly-created %list contains the exact contents of the moved
|
|
* instance. The contents of the moved instance are a valid, but
|
|
* unspecified %list.
|
|
*/
|
|
list(list&&) = default;
|
|
|
|
/**
|
|
* @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(_Node_alloc_type(__a))
|
|
{ _M_initialize_dispatch(__l.begin(), __l.end(), __false_type()); }
|
|
|
|
list(const list& __x, const allocator_type& __a)
|
|
: _Base(_Node_alloc_type(__a))
|
|
{ _M_initialize_dispatch(__x.begin(), __x.end(), __false_type()); }
|
|
|
|
private:
|
|
list(list&& __x, const allocator_type& __a, true_type) noexcept
|
|
: _Base(_Node_alloc_type(__a), std::move(__x))
|
|
{ }
|
|
|
|
list(list&& __x, const allocator_type& __a, false_type)
|
|
: _Base(_Node_alloc_type(__a))
|
|
{
|
|
if (__x._M_get_Node_allocator() == this->_M_get_Node_allocator())
|
|
this->_M_move_nodes(std::move(__x));
|
|
else
|
|
insert(begin(), std::__make_move_if_noexcept_iterator(__x.begin()),
|
|
std::__make_move_if_noexcept_iterator(__x.end()));
|
|
}
|
|
|
|
public:
|
|
list(list&& __x, const allocator_type& __a)
|
|
noexcept(_Node_alloc_traits::_S_always_equal())
|
|
: list(std::move(__x), __a,
|
|
typename _Node_alloc_traits::is_always_equal{})
|
|
{ }
|
|
#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)).
|
|
*/
|
|
#if __cplusplus >= 201103L
|
|
template<typename _InputIterator,
|
|
typename = std::_RequireInputIter<_InputIterator>>
|
|
list(_InputIterator __first, _InputIterator __last,
|
|
const allocator_type& __a = allocator_type())
|
|
: _Base(_Node_alloc_type(__a))
|
|
{ _M_initialize_dispatch(__first, __last, __false_type()); }
|
|
#else
|
|
template<typename _InputIterator>
|
|
list(_InputIterator __first, _InputIterator __last,
|
|
const allocator_type& __a = allocator_type())
|
|
: _Base(_Node_alloc_type(__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());
|
|
}
|
|
#endif
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* 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.
|
|
*/
|
|
~list() = default;
|
|
#endif
|
|
|
|
/**
|
|
* @brief %List assignment operator.
|
|
* @param __x A %list of identical element and allocator types.
|
|
*
|
|
* All the elements of @a __x are copied.
|
|
*
|
|
* Whether the allocator is copied depends on the allocator traits.
|
|
*/
|
|
list&
|
|
operator=(const list& __x);
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @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).
|
|
*
|
|
* Afterwards @a __x is a valid, but unspecified %list
|
|
*
|
|
* Whether the allocator is moved depends on the allocator traits.
|
|
*/
|
|
list&
|
|
operator=(list&& __x)
|
|
noexcept(_Node_alloc_traits::_S_nothrow_move())
|
|
{
|
|
constexpr bool __move_storage =
|
|
_Node_alloc_traits::_S_propagate_on_move_assign()
|
|
|| _Node_alloc_traits::_S_always_equal();
|
|
_M_move_assign(std::move(__x), __bool_constant<__move_storage>());
|
|
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.
|
|
*/
|
|
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.
|
|
*/
|
|
#if __cplusplus >= 201103L
|
|
template<typename _InputIterator,
|
|
typename = std::_RequireInputIter<_InputIterator>>
|
|
void
|
|
assign(_InputIterator __first, _InputIterator __last)
|
|
{ _M_assign_dispatch(__first, __last, __false_type()); }
|
|
#else
|
|
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());
|
|
}
|
|
#endif
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @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->_M_assign_dispatch(__l.begin(), __l.end(), __false_type()); }
|
|
#endif
|
|
|
|
/// Get a copy of the memory allocation object.
|
|
allocator_type
|
|
get_allocator() const _GLIBCXX_NOEXCEPT
|
|
{ return allocator_type(_Base::_M_get_Node_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() _GLIBCXX_NOEXCEPT
|
|
{ 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 _GLIBCXX_NOEXCEPT
|
|
{ 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() _GLIBCXX_NOEXCEPT
|
|
{ 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 _GLIBCXX_NOEXCEPT
|
|
{ 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() _GLIBCXX_NOEXCEPT
|
|
{ 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 _GLIBCXX_NOEXCEPT
|
|
{ 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() _GLIBCXX_NOEXCEPT
|
|
{ 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 _GLIBCXX_NOEXCEPT
|
|
{ return const_reverse_iterator(begin()); }
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* 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 noexcept
|
|
{ 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 noexcept
|
|
{ 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 noexcept
|
|
{ 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 noexcept
|
|
{ return const_reverse_iterator(begin()); }
|
|
#endif
|
|
|
|
// [23.2.2.2] capacity
|
|
/**
|
|
* Returns true if the %list is empty. (Thus begin() would equal
|
|
* end().)
|
|
*/
|
|
_GLIBCXX_NODISCARD bool
|
|
empty() const _GLIBCXX_NOEXCEPT
|
|
{ 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 _GLIBCXX_NOEXCEPT
|
|
{ return _M_node_count(); }
|
|
|
|
/** Returns the size() of the largest possible %list. */
|
|
size_type
|
|
max_size() const _GLIBCXX_NOEXCEPT
|
|
{ return _Node_alloc_traits::max_size(_M_get_Node_allocator()); }
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @brief Resizes the %list to the specified number of elements.
|
|
* @param __new_size Number of elements the %list should contain.
|
|
*
|
|
* 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 default
|
|
* constructed elements are appended.
|
|
*/
|
|
void
|
|
resize(size_type __new_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, const value_type& __x);
|
|
#else
|
|
/**
|
|
* @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());
|
|
#endif
|
|
|
|
// element access
|
|
/**
|
|
* Returns a read/write reference to the data at the first
|
|
* element of the %list.
|
|
*/
|
|
reference
|
|
front() _GLIBCXX_NOEXCEPT
|
|
{ return *begin(); }
|
|
|
|
/**
|
|
* Returns a read-only (constant) reference to the data at the first
|
|
* element of the %list.
|
|
*/
|
|
const_reference
|
|
front() const _GLIBCXX_NOEXCEPT
|
|
{ return *begin(); }
|
|
|
|
/**
|
|
* Returns a read/write reference to the data at the last element
|
|
* of the %list.
|
|
*/
|
|
reference
|
|
back() _GLIBCXX_NOEXCEPT
|
|
{
|
|
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 _GLIBCXX_NOEXCEPT
|
|
{
|
|
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); }
|
|
|
|
#if __cplusplus >= 201103L
|
|
void
|
|
push_front(value_type&& __x)
|
|
{ this->_M_insert(begin(), std::move(__x)); }
|
|
|
|
template<typename... _Args>
|
|
#if __cplusplus > 201402L
|
|
reference
|
|
#else
|
|
void
|
|
#endif
|
|
emplace_front(_Args&&... __args)
|
|
{
|
|
this->_M_insert(begin(), std::forward<_Args>(__args)...);
|
|
#if __cplusplus > 201402L
|
|
return front();
|
|
#endif
|
|
}
|
|
#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() _GLIBCXX_NOEXCEPT
|
|
{ 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); }
|
|
|
|
#if __cplusplus >= 201103L
|
|
void
|
|
push_back(value_type&& __x)
|
|
{ this->_M_insert(end(), std::move(__x)); }
|
|
|
|
template<typename... _Args>
|
|
#if __cplusplus > 201402L
|
|
reference
|
|
#else
|
|
void
|
|
#endif
|
|
emplace_back(_Args&&... __args)
|
|
{
|
|
this->_M_insert(end(), std::forward<_Args>(__args)...);
|
|
#if __cplusplus > 201402L
|
|
return back();
|
|
#endif
|
|
}
|
|
#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() _GLIBCXX_NOEXCEPT
|
|
{ this->_M_erase(iterator(this->_M_impl._M_node._M_prev)); }
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @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(const_iterator __position, _Args&&... __args);
|
|
|
|
/**
|
|
* @brief Inserts given value into %list before specified iterator.
|
|
* @param __position A const_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(const_iterator __position, const value_type& __x);
|
|
#else
|
|
/**
|
|
* @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);
|
|
#endif
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @brief Inserts given rvalue into %list before specified iterator.
|
|
* @param __position A const_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(const_iterator __position, value_type&& __x)
|
|
{ return emplace(__position, std::move(__x)); }
|
|
|
|
/**
|
|
* @brief Inserts the contents of an initializer_list into %list
|
|
* before specified const_iterator.
|
|
* @param __p A const_iterator into the %list.
|
|
* @param __l An initializer_list of value_type.
|
|
* @return An iterator pointing to the first element inserted
|
|
* (or __position).
|
|
*
|
|
* 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.
|
|
*/
|
|
iterator
|
|
insert(const_iterator __p, initializer_list<value_type> __l)
|
|
{ return this->insert(__p, __l.begin(), __l.end()); }
|
|
#endif
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @brief Inserts a number of copies of given data into the %list.
|
|
* @param __position A const_iterator into the %list.
|
|
* @param __n Number of elements to be inserted.
|
|
* @param __x Data to be inserted.
|
|
* @return An iterator pointing to the first element inserted
|
|
* (or __position).
|
|
*
|
|
* 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.
|
|
*/
|
|
iterator
|
|
insert(const_iterator __position, size_type __n, const value_type& __x);
|
|
#else
|
|
/**
|
|
* @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, get_allocator());
|
|
splice(__position, __tmp);
|
|
}
|
|
#endif
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @brief Inserts a range into the %list.
|
|
* @param __position A const_iterator into the %list.
|
|
* @param __first An input iterator.
|
|
* @param __last An input iterator.
|
|
* @return An iterator pointing to the first element inserted
|
|
* (or __position).
|
|
*
|
|
* 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,
|
|
typename = std::_RequireInputIter<_InputIterator>>
|
|
iterator
|
|
insert(const_iterator __position, _InputIterator __first,
|
|
_InputIterator __last);
|
|
#else
|
|
/**
|
|
* @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, get_allocator());
|
|
splice(__position, __tmp);
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* @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
|
|
#if __cplusplus >= 201103L
|
|
erase(const_iterator __position) noexcept;
|
|
#else
|
|
erase(iterator __position);
|
|
#endif
|
|
|
|
/**
|
|
* @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
|
|
#if __cplusplus >= 201103L
|
|
erase(const_iterator __first, const_iterator __last) noexcept
|
|
#else
|
|
erase(iterator __first, iterator __last)
|
|
#endif
|
|
{
|
|
while (__first != __last)
|
|
__first = erase(__first);
|
|
return __last._M_const_cast();
|
|
}
|
|
|
|
/**
|
|
* @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.
|
|
*
|
|
* Whether the allocators are swapped depends on the allocator traits.
|
|
*/
|
|
void
|
|
swap(list& __x) _GLIBCXX_NOEXCEPT
|
|
{
|
|
__detail::_List_node_base::swap(this->_M_impl._M_node,
|
|
__x._M_impl._M_node);
|
|
|
|
size_t __xsize = __x._M_get_size();
|
|
__x._M_set_size(this->_M_get_size());
|
|
this->_M_set_size(__xsize);
|
|
|
|
_Node_alloc_traits::_S_on_swap(this->_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() _GLIBCXX_NOEXCEPT
|
|
{
|
|
_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
|
|
#if __cplusplus >= 201103L
|
|
splice(const_iterator __position, list&& __x) noexcept
|
|
#else
|
|
splice(iterator __position, list& __x)
|
|
#endif
|
|
{
|
|
if (!__x.empty())
|
|
{
|
|
_M_check_equal_allocators(__x);
|
|
|
|
this->_M_transfer(__position._M_const_cast(),
|
|
__x.begin(), __x.end());
|
|
|
|
this->_M_inc_size(__x._M_get_size());
|
|
__x._M_set_size(0);
|
|
}
|
|
}
|
|
|
|
#if __cplusplus >= 201103L
|
|
void
|
|
splice(const_iterator __position, list& __x) noexcept
|
|
{ splice(__position, std::move(__x)); }
|
|
#endif
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @brief Insert element from another %list.
|
|
* @param __position Const_iterator referencing the element to
|
|
* insert before.
|
|
* @param __x Source list.
|
|
* @param __i Const_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
|
|
splice(const_iterator __position, list&& __x, const_iterator __i) noexcept
|
|
#else
|
|
/**
|
|
* @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
|
|
splice(iterator __position, list& __x, iterator __i)
|
|
#endif
|
|
{
|
|
iterator __j = __i._M_const_cast();
|
|
++__j;
|
|
if (__position == __i || __position == __j)
|
|
return;
|
|
|
|
if (this != std::__addressof(__x))
|
|
_M_check_equal_allocators(__x);
|
|
|
|
this->_M_transfer(__position._M_const_cast(),
|
|
__i._M_const_cast(), __j);
|
|
|
|
this->_M_inc_size(1);
|
|
__x._M_dec_size(1);
|
|
}
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @brief Insert element from another %list.
|
|
* @param __position Const_iterator referencing the element to
|
|
* insert before.
|
|
* @param __x Source list.
|
|
* @param __i Const_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
|
|
splice(const_iterator __position, list& __x, const_iterator __i) noexcept
|
|
{ splice(__position, std::move(__x), __i); }
|
|
#endif
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @brief Insert range from another %list.
|
|
* @param __position Const_iterator referencing the element to
|
|
* insert before.
|
|
* @param __x Source list.
|
|
* @param __first Const_iterator referencing the start of range in x.
|
|
* @param __last Const_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
|
|
splice(const_iterator __position, list&& __x, const_iterator __first,
|
|
const_iterator __last) noexcept
|
|
#else
|
|
/**
|
|
* @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
|
|
splice(iterator __position, list& __x, iterator __first,
|
|
iterator __last)
|
|
#endif
|
|
{
|
|
if (__first != __last)
|
|
{
|
|
if (this != std::__addressof(__x))
|
|
_M_check_equal_allocators(__x);
|
|
|
|
size_t __n = _S_distance(__first, __last);
|
|
this->_M_inc_size(__n);
|
|
__x._M_dec_size(__n);
|
|
|
|
this->_M_transfer(__position._M_const_cast(),
|
|
__first._M_const_cast(),
|
|
__last._M_const_cast());
|
|
}
|
|
}
|
|
|
|
#if __cplusplus >= 201103L
|
|
/**
|
|
* @brief Insert range from another %list.
|
|
* @param __position Const_iterator referencing the element to
|
|
* insert before.
|
|
* @param __x Source list.
|
|
* @param __first Const_iterator referencing the start of range in x.
|
|
* @param __last Const_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
|
|
splice(const_iterator __position, list& __x, const_iterator __first,
|
|
const_iterator __last) noexcept
|
|
{ splice(__position, std::move(__x), __first, __last); }
|
|
#endif
|
|
|
|
private:
|
|
#if __cplusplus > 201703L
|
|
# define __cpp_lib_list_remove_return_type 201806L
|
|
typedef size_type __remove_return_type;
|
|
# define _GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG \
|
|
__attribute__((__abi_tag__("__cxx20")))
|
|
#else
|
|
typedef void __remove_return_type;
|
|
# define _GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG
|
|
#endif
|
|
public:
|
|
|
|
/**
|
|
* @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.
|
|
*/
|
|
_GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG
|
|
__remove_return_type
|
|
remove(const _Tp& __value);
|
|
|
|
/**
|
|
* @brief Remove all elements satisfying a predicate.
|
|
* @tparam _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>
|
|
__remove_return_type
|
|
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.
|
|
*/
|
|
_GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG
|
|
__remove_return_type
|
|
unique();
|
|
|
|
/**
|
|
* @brief Remove consecutive elements satisfying a predicate.
|
|
* @tparam _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>
|
|
__remove_return_type
|
|
unique(_BinaryPredicate);
|
|
|
|
#undef _GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG
|
|
|
|
/**
|
|
* @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.
|
|
*/
|
|
#if __cplusplus >= 201103L
|
|
void
|
|
merge(list&& __x);
|
|
|
|
void
|
|
merge(list& __x)
|
|
{ merge(std::move(__x)); }
|
|
#else
|
|
void
|
|
merge(list& __x);
|
|
#endif
|
|
|
|
/**
|
|
* @brief Merge sorted lists according to comparison function.
|
|
* @tparam _StrictWeakOrdering Comparison function defining
|
|
* sort order.
|
|
* @param __x Sorted list to merge.
|
|
* @param __comp Comparison functor.
|
|
*
|
|
* 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().
|
|
*/
|
|
#if __cplusplus >= 201103L
|
|
template<typename _StrictWeakOrdering>
|
|
void
|
|
merge(list&& __x, _StrictWeakOrdering __comp);
|
|
|
|
template<typename _StrictWeakOrdering>
|
|
void
|
|
merge(list& __x, _StrictWeakOrdering __comp)
|
|
{ merge(std::move(__x), __comp); }
|
|
#else
|
|
template<typename _StrictWeakOrdering>
|
|
void
|
|
merge(list& __x, _StrictWeakOrdering __comp);
|
|
#endif
|
|
|
|
/**
|
|
* @brief Reverse the elements in list.
|
|
*
|
|
* Reverse the order of elements in the list in linear time.
|
|
*/
|
|
void
|
|
reverse() _GLIBCXX_NOEXCEPT
|
|
{ this->_M_impl._M_node._M_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)
|
|
#if __cplusplus >= 201103L
|
|
emplace_back(*__first);
|
|
#else
|
|
push_back(*__first);
|
|
#endif
|
|
}
|
|
|
|
// 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; --__n)
|
|
push_back(__x);
|
|
}
|
|
|
|
#if __cplusplus >= 201103L
|
|
// Called by list(n).
|
|
void
|
|
_M_default_initialize(size_type __n)
|
|
{
|
|
for (; __n; --__n)
|
|
emplace_back();
|
|
}
|
|
|
|
// Called by resize(sz).
|
|
void
|
|
_M_default_append(size_type __n);
|
|
#endif
|
|
|
|
// 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->_M_transfer(__first._M_node, __last._M_node); }
|
|
|
|
// Inserts new element at position given and with value given.
|
|
#if __cplusplus < 201103L
|
|
void
|
|
_M_insert(iterator __position, const value_type& __x)
|
|
{
|
|
_Node* __tmp = _M_create_node(__x);
|
|
__tmp->_M_hook(__position._M_node);
|
|
this->_M_inc_size(1);
|
|
}
|
|
#else
|
|
template<typename... _Args>
|
|
void
|
|
_M_insert(iterator __position, _Args&&... __args)
|
|
{
|
|
_Node* __tmp = _M_create_node(std::forward<_Args>(__args)...);
|
|
__tmp->_M_hook(__position._M_node);
|
|
this->_M_inc_size(1);
|
|
}
|
|
#endif
|
|
|
|
// Erases element at position given.
|
|
void
|
|
_M_erase(iterator __position) _GLIBCXX_NOEXCEPT
|
|
{
|
|
this->_M_dec_size(1);
|
|
__position._M_node->_M_unhook();
|
|
_Node* __n = static_cast<_Node*>(__position._M_node);
|
|
#if __cplusplus >= 201103L
|
|
_Node_alloc_traits::destroy(_M_get_Node_allocator(), __n->_M_valptr());
|
|
#else
|
|
_Tp_alloc_type(_M_get_Node_allocator()).destroy(__n->_M_valptr());
|
|
#endif
|
|
|
|
_M_put_node(__n);
|
|
}
|
|
|
|
// To implement the splice (and merge) bits of N1599.
|
|
void
|
|
_M_check_equal_allocators(list& __x) _GLIBCXX_NOEXCEPT
|
|
{
|
|
if (std::__alloc_neq<typename _Base::_Node_alloc_type>::
|
|
_S_do_it(_M_get_Node_allocator(), __x._M_get_Node_allocator()))
|
|
__builtin_abort();
|
|
}
|
|
|
|
// Used to implement resize.
|
|
const_iterator
|
|
_M_resize_pos(size_type& __new_size) const;
|
|
|
|
#if __cplusplus >= 201103L
|
|
void
|
|
_M_move_assign(list&& __x, true_type) noexcept
|
|
{
|
|
this->clear();
|
|
this->_M_move_nodes(std::move(__x));
|
|
std::__alloc_on_move(this->_M_get_Node_allocator(),
|
|
__x._M_get_Node_allocator());
|
|
}
|
|
|
|
void
|
|
_M_move_assign(list&& __x, false_type)
|
|
{
|
|
if (__x._M_get_Node_allocator() == this->_M_get_Node_allocator())
|
|
_M_move_assign(std::move(__x), true_type{});
|
|
else
|
|
// The rvalue's allocator cannot be moved, or is not equal,
|
|
// so we need to individually move each element.
|
|
_M_assign_dispatch(std::make_move_iterator(__x.begin()),
|
|
std::make_move_iterator(__x.end()),
|
|
__false_type{});
|
|
}
|
|
#endif
|
|
};
|
|
|
|
#if __cpp_deduction_guides >= 201606
|
|
template<typename _InputIterator, typename _ValT
|
|
= typename iterator_traits<_InputIterator>::value_type,
|
|
typename _Allocator = allocator<_ValT>,
|
|
typename = _RequireInputIter<_InputIterator>,
|
|
typename = _RequireAllocator<_Allocator>>
|
|
list(_InputIterator, _InputIterator, _Allocator = _Allocator())
|
|
-> list<_ValT, _Allocator>;
|
|
#endif
|
|
|
|
_GLIBCXX_END_NAMESPACE_CXX11
|
|
|
|
/**
|
|
* @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)
|
|
{
|
|
#if _GLIBCXX_USE_CXX11_ABI
|
|
if (__x.size() != __y.size())
|
|
return false;
|
|
#endif
|
|
|
|
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;
|
|
}
|
|
|
|
#if __cpp_lib_three_way_comparison
|
|
/**
|
|
* @brief List ordering relation.
|
|
* @param __x A `list`.
|
|
* @param __y A `list` of the same type as `__x`.
|
|
* @return A value indicating whether `__x` is less than, equal to,
|
|
* greater than, or incomparable with `__y`.
|
|
*
|
|
* See `std::lexicographical_compare_three_way()` for how the determination
|
|
* is made. This operator is used to synthesize relational operators like
|
|
* `<` and `>=` etc.
|
|
*/
|
|
template<typename _Tp, typename _Alloc>
|
|
inline __detail::__synth3way_t<_Tp>
|
|
operator<=>(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
|
|
{
|
|
return std::lexicographical_compare_three_way(__x.begin(), __x.end(),
|
|
__y.begin(), __y.end(),
|
|
__detail::__synth3way);
|
|
}
|
|
#else
|
|
/**
|
|
* @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); }
|
|
#endif // three-way comparison
|
|
|
|
/// See std::list::swap().
|
|
template<typename _Tp, typename _Alloc>
|
|
inline void
|
|
swap(list<_Tp, _Alloc>& __x, list<_Tp, _Alloc>& __y)
|
|
_GLIBCXX_NOEXCEPT_IF(noexcept(__x.swap(__y)))
|
|
{ __x.swap(__y); }
|
|
|
|
_GLIBCXX_END_NAMESPACE_CONTAINER
|
|
|
|
#if _GLIBCXX_USE_CXX11_ABI
|
|
|
|
// Detect when distance is used to compute the size of the whole list.
|
|
template<typename _Tp>
|
|
inline ptrdiff_t
|
|
__distance(_GLIBCXX_STD_C::_List_iterator<_Tp> __first,
|
|
_GLIBCXX_STD_C::_List_iterator<_Tp> __last,
|
|
input_iterator_tag __tag)
|
|
{
|
|
typedef _GLIBCXX_STD_C::_List_const_iterator<_Tp> _CIter;
|
|
return std::__distance(_CIter(__first), _CIter(__last), __tag);
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline ptrdiff_t
|
|
__distance(_GLIBCXX_STD_C::_List_const_iterator<_Tp> __first,
|
|
_GLIBCXX_STD_C::_List_const_iterator<_Tp> __last,
|
|
input_iterator_tag)
|
|
{
|
|
typedef __detail::_List_node_header _Sentinel;
|
|
_GLIBCXX_STD_C::_List_const_iterator<_Tp> __beyond = __last;
|
|
++__beyond;
|
|
const bool __whole = __first == __beyond;
|
|
if (__builtin_constant_p (__whole) && __whole)
|
|
return static_cast<const _Sentinel*>(__last._M_node)->_M_size;
|
|
|
|
ptrdiff_t __n = 0;
|
|
while (__first != __last)
|
|
{
|
|
++__first;
|
|
++__n;
|
|
}
|
|
return __n;
|
|
}
|
|
#endif
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace std
|
|
|
|
#endif /* _STL_LIST_H */
|