// List implementation -*- C++ -*-
-// Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+// Copyright (C) 2001-2014 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 2, or (at your option)
+// 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,
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-// USA.
+// 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.
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
+// 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/>.
/*
*
* purpose. It is provided "as is" without express or implied warranty.
*/
-/** @file stl_list.h
+/** @file bits/stl_list.h
* This is an internal header file, included by other library headers.
- * You should not attempt to use it directly.
+ * Do not attempt to use it directly. @headername{list}
*/
-#ifndef __GLIBCPP_INTERNAL_LIST_H
-#define __GLIBCPP_INTERNAL_LIST_H
+#ifndef _STL_LIST_H
+#define _STL_LIST_H 1
#include <bits/concept_check.h>
+#if __cplusplus >= 201103L
+#include <initializer_list>
+#endif
-namespace std
+namespace std _GLIBCXX_VISIBILITY(default)
{
- // 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.
-
- /// @if maint Common part of a node in the %list. @endif
- struct _List_node_base
+ namespace __detail
{
- _List_node_base* _M_next; ///< Self-explanatory
- _List_node_base* _M_prev; ///< Self-explanatory
- };
-
- /// @if maint An actual node in the %list. @endif
+ _GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ // 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) _GLIBCXX_USE_NOEXCEPT;
+
+ void
+ _M_transfer(_List_node_base* const __first,
+ _List_node_base* const __last) _GLIBCXX_USE_NOEXCEPT;
+
+ void
+ _M_reverse() _GLIBCXX_USE_NOEXCEPT;
+
+ void
+ _M_hook(_List_node_base* const __position) _GLIBCXX_USE_NOEXCEPT;
+
+ void
+ _M_unhook() _GLIBCXX_USE_NOEXCEPT;
+ };
+
+ _GLIBCXX_END_NAMESPACE_VERSION
+ } // namespace detail
+
+_GLIBCXX_BEGIN_NAMESPACE_CONTAINER
+
+ /// An actual node in the %list.
template<typename _Tp>
- struct _List_node : public _List_node_base
- {
- _Tp _M_data; ///< User's data.
- };
-
-
- /**
- * @if maint
- * @brief Common part of a list::iterator.
- *
- * A simple type to walk a doubly-linked list. All operations here should
- * be self-explanatory after taking any decent introductory data structures
- * course.
- * @endif
- */
- struct _List_iterator_base
- {
- typedef size_t size_type;
- typedef ptrdiff_t difference_type;
- typedef bidirectional_iterator_tag iterator_category;
-
- /// The only member points to the %list element.
- _List_node_base* _M_node;
-
- _List_iterator_base(_List_node_base* __x)
- : _M_node(__x)
- { }
-
- _List_iterator_base()
- { }
-
- /// Walk the %list forward.
- void
- _M_incr()
- { _M_node = _M_node->_M_next; }
-
- /// Walk the %list backward.
- void
- _M_decr()
- { _M_node = _M_node->_M_prev; }
-
- bool
- operator==(const _List_iterator_base& __x) const
- { return _M_node == __x._M_node; }
-
- bool
- operator!=(const _List_iterator_base& __x) const
- { return _M_node != __x._M_node; }
- };
-
+ struct _List_node : public __detail::_List_node_base
+ {
+ ///< User's data.
+ _Tp _M_data;
+
+#if __cplusplus >= 201103L
+ template<typename... _Args>
+ _List_node(_Args&&... __args)
+ : __detail::_List_node_base(), _M_data(std::forward<_Args>(__args)...)
+ { }
+#endif
+ };
+
/**
* @brief A list::iterator.
*
- * In addition to being used externally, a list holds one of these
- * internally, pointing to the sequence of data.
- *
- * @if maint
* All the functions are op overloads.
- * @endif
*/
- template<typename _Tp, typename _Ref, typename _Ptr>
- struct _List_iterator : public _List_iterator_base
- {
- typedef _List_iterator<_Tp,_Tp&,_Tp*> iterator;
- typedef _List_iterator<_Tp,const _Tp&,const _Tp*> const_iterator;
- typedef _List_iterator<_Tp,_Ref,_Ptr> _Self;
-
- typedef _Tp value_type;
- typedef _Ptr pointer;
- typedef _Ref reference;
- typedef _List_node<_Tp> _Node;
-
- _List_iterator(_Node* __x)
- : _List_iterator_base(__x)
- { }
-
- _List_iterator()
- { }
-
- _List_iterator(const iterator& __x)
- : _List_iterator_base(__x._M_node)
- { }
-
- reference
- operator*() const
- { return static_cast<_Node*>(_M_node)->_M_data; }
- // Must downcast from List_node_base to _List_node to get to _M_data.
-
- pointer
- operator->() const
- { return &(operator*()); }
-
- _Self&
- operator++()
- {
- this->_M_incr();
- return *this;
- }
-
- _Self
- operator++(int)
- {
- _Self __tmp = *this;
- this->_M_incr();
- return __tmp;
- }
-
- _Self&
- operator--()
- {
- this->_M_decr();
- return *this;
- }
-
- _Self
- operator--(int)
+ template<typename _Tp>
+ struct _List_iterator
{
- _Self __tmp = *this;
- this->_M_decr();
- return __tmp;
- }
- };
-
-
- /// @if maint Primary default version. @endif
- /**
- * @if maint
- * See bits/stl_deque.h's _Deque_alloc_base for an explanation.
- * @endif
- */
- template<typename _Tp, typename _Allocator, bool _IsStatic>
- class _List_alloc_base
- {
- public:
- typedef typename _Alloc_traits<_Tp, _Allocator>::allocator_type
- allocator_type;
-
- allocator_type
- get_allocator() const { return _M_node_allocator; }
-
- _List_alloc_base(const allocator_type& __a)
- : _M_node_allocator(__a)
- { }
-
- protected:
- _List_node<_Tp>*
- _M_get_node()
- { return _M_node_allocator.allocate(1); }
-
- void
- _M_put_node(_List_node<_Tp>* __p)
- { _M_node_allocator.deallocate(__p, 1); }
-
- // 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 get_allocator above; if the two types are
- // actually different, there had better be a conversion between them.
- //
- // None of the predefined allocators shipped with the library (as of 3.1)
- // use this instantiation anyhow; they're all instanceless.
- typename _Alloc_traits<_List_node<_Tp>, _Allocator>::allocator_type
- _M_node_allocator;
-
- _List_node<_Tp>* _M_node;
- };
-
- /// @if maint Specialization for instanceless allocators. @endif
- template<typename _Tp, typename _Allocator>
- class _List_alloc_base<_Tp, _Allocator, true>
- {
- public:
- typedef typename _Alloc_traits<_Tp, _Allocator>::allocator_type
- allocator_type;
-
- allocator_type
- get_allocator() const { return allocator_type(); }
-
- _List_alloc_base(const allocator_type&)
- { }
-
- protected:
- // See comment in primary template class about why this is safe for the
- // standard predefined classes.
- typedef typename _Alloc_traits<_List_node<_Tp>, _Allocator>::_Alloc_type
- _Alloc_type;
-
- _List_node<_Tp>*
- _M_get_node()
- { return _Alloc_type::allocate(1); }
-
- void
- _M_put_node(_List_node<_Tp>* __p)
- { _Alloc_type::deallocate(__p, 1); }
-
- _List_node<_Tp>* _M_node;
- };
-
-
+ 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() _GLIBCXX_NOEXCEPT
+ : _M_node() { }
+
+ explicit
+ _List_iterator(__detail::_List_node_base* __x) _GLIBCXX_NOEXCEPT
+ : _M_node(__x) { }
+
+ _Self
+ _M_const_cast() const _GLIBCXX_NOEXCEPT
+ { return *this; }
+
+ // Must downcast from _List_node_base to _List_node to get to _M_data.
+ reference
+ operator*() const _GLIBCXX_NOEXCEPT
+ { return static_cast<_Node*>(_M_node)->_M_data; }
+
+ pointer
+ operator->() const _GLIBCXX_NOEXCEPT
+ { return std::__addressof(static_cast<_Node*>(_M_node)->_M_data); }
+
+ _Self&
+ operator++() _GLIBCXX_NOEXCEPT
+ {
+ _M_node = _M_node->_M_next;
+ return *this;
+ }
+
+ _Self
+ operator++(int) _GLIBCXX_NOEXCEPT
+ {
+ _Self __tmp = *this;
+ _M_node = _M_node->_M_next;
+ return __tmp;
+ }
+
+ _Self&
+ operator--() _GLIBCXX_NOEXCEPT
+ {
+ _M_node = _M_node->_M_prev;
+ return *this;
+ }
+
+ _Self
+ operator--(int) _GLIBCXX_NOEXCEPT
+ {
+ _Self __tmp = *this;
+ _M_node = _M_node->_M_prev;
+ return __tmp;
+ }
+
+ bool
+ operator==(const _Self& __x) const _GLIBCXX_NOEXCEPT
+ { return _M_node == __x._M_node; }
+
+ bool
+ operator!=(const _Self& __x) const _GLIBCXX_NOEXCEPT
+ { return _M_node != __x._M_node; }
+
+ // The only member points to the %list element.
+ __detail::_List_node_base* _M_node;
+ };
+
/**
- * @if maint
- * See bits/stl_deque.h's _Deque_base for an explanation.
- * @endif
+ * @brief A list::const_iterator.
+ *
+ * All the functions are op overloads.
*/
- template <typename _Tp, typename _Alloc>
- class _List_base
- : public _List_alloc_base<_Tp, _Alloc,
- _Alloc_traits<_Tp, _Alloc>::_S_instanceless>
- {
- public:
- typedef _List_alloc_base<_Tp, _Alloc,
- _Alloc_traits<_Tp, _Alloc>::_S_instanceless>
- _Base;
- typedef typename _Base::allocator_type allocator_type;
-
- _List_base(const allocator_type& __a)
- : _Base(__a)
+ template<typename _Tp>
+ struct _List_const_iterator
{
- this->_M_node = _M_get_node();
- this->_M_node->_M_next = this->_M_node;
- this->_M_node->_M_prev = this->_M_node;
- }
-
- // This is what actually destroys the list.
- ~_List_base()
+ 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() _GLIBCXX_NOEXCEPT
+ : _M_node() { }
+
+ explicit
+ _List_const_iterator(const __detail::_List_node_base* __x)
+ _GLIBCXX_NOEXCEPT
+ : _M_node(__x) { }
+
+ _List_const_iterator(const iterator& __x) _GLIBCXX_NOEXCEPT
+ : _M_node(__x._M_node) { }
+
+ iterator
+ _M_const_cast() const _GLIBCXX_NOEXCEPT
+ { return iterator(const_cast<__detail::_List_node_base*>(_M_node)); }
+
+ // Must downcast from List_node_base to _List_node to get to
+ // _M_data.
+ reference
+ operator*() const _GLIBCXX_NOEXCEPT
+ { return static_cast<_Node*>(_M_node)->_M_data; }
+
+ pointer
+ operator->() const _GLIBCXX_NOEXCEPT
+ { return std::__addressof(static_cast<_Node*>(_M_node)->_M_data); }
+
+ _Self&
+ operator++() _GLIBCXX_NOEXCEPT
+ {
+ _M_node = _M_node->_M_next;
+ return *this;
+ }
+
+ _Self
+ operator++(int) _GLIBCXX_NOEXCEPT
+ {
+ _Self __tmp = *this;
+ _M_node = _M_node->_M_next;
+ return __tmp;
+ }
+
+ _Self&
+ operator--() _GLIBCXX_NOEXCEPT
+ {
+ _M_node = _M_node->_M_prev;
+ return *this;
+ }
+
+ _Self
+ operator--(int) _GLIBCXX_NOEXCEPT
+ {
+ _Self __tmp = *this;
+ _M_node = _M_node->_M_prev;
+ return __tmp;
+ }
+
+ bool
+ operator==(const _Self& __x) const _GLIBCXX_NOEXCEPT
+ { return _M_node == __x._M_node; }
+
+ bool
+ operator!=(const _Self& __x) const _GLIBCXX_NOEXCEPT
+ { return _M_node != __x._M_node; }
+
+ // The only member points to the %list element.
+ const __detail::_List_node_base* _M_node;
+ };
+
+ template<typename _Val>
+ inline bool
+ operator==(const _List_iterator<_Val>& __x,
+ const _List_const_iterator<_Val>& __y) _GLIBCXX_NOEXCEPT
+ { return __x._M_node == __y._M_node; }
+
+ template<typename _Val>
+ inline bool
+ operator!=(const _List_iterator<_Val>& __x,
+ const _List_const_iterator<_Val>& __y) _GLIBCXX_NOEXCEPT
+ { return __x._M_node != __y._M_node; }
+
+
+ /// See bits/stl_deque.h's _Deque_base for an explanation.
+ template<typename _Tp, typename _Alloc>
+ class _GLIBCXX_DEFAULT_ABI_TAG _List_base
{
- __clear();
- _M_put_node(this->_M_node);
- }
-
- void
- __clear();
- };
-
-
+ 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;
+
+ static size_t
+ _S_distance(const __detail::_List_node_base* __first,
+ const __detail::_List_node_base* __last)
+ {
+ size_t __n = 0;
+ while (__first != __last)
+ {
+ __first = __first->_M_next;
+ ++__n;
+ }
+ return __n;
+ }
+
+ struct _List_impl
+ : public _Node_alloc_type
+ {
+#if _GLIBCXX_USE_CXX11_ABI
+ _List_node<size_t> _M_node;
+#else
+ __detail::_List_node_base _M_node;
+#endif
+
+ _List_impl()
+ : _Node_alloc_type(), _M_node()
+ { }
+
+ _List_impl(const _Node_alloc_type& __a) _GLIBCXX_NOEXCEPT
+ : _Node_alloc_type(__a), _M_node()
+ { }
+
+#if __cplusplus >= 201103L
+ _List_impl(_Node_alloc_type&& __a) _GLIBCXX_NOEXCEPT
+ : _Node_alloc_type(std::move(__a)), _M_node()
+ { }
+#endif
+ };
+
+ _List_impl _M_impl;
+
+#if _GLIBCXX_USE_CXX11_ABI
+ size_t _M_get_size() const { return _M_impl._M_node._M_data; }
+
+ void _M_set_size(size_t __n) { _M_impl._M_node._M_data = __n; }
+
+ void _M_inc_size(size_t __n) { _M_impl._M_node._M_data += __n; }
+
+ void _M_dec_size(size_t __n) { _M_impl._M_node._M_data -= __n; }
+
+ size_t
+ _M_distance(const __detail::_List_node_base* __first,
+ const __detail::_List_node_base* __last) const
+ { return _S_distance(__first, __last); }
+
+ // return the stored size
+ size_t _M_node_count() const { return _M_impl._M_node._M_data; }
+#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) { }
+ size_t _M_distance(const void*, const void*) const { return 0; }
+
+ // 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
+
+ _List_node<_Tp>*
+ _M_get_node()
+ { return _M_impl._Node_alloc_type::allocate(1); }
+
+ void
+ _M_put_node(_List_node<_Tp>* __p) _GLIBCXX_NOEXCEPT
+ { _M_impl._Node_alloc_type::deallocate(__p, 1); }
+
+ public:
+ typedef _Alloc allocator_type;
+
+ _Node_alloc_type&
+ _M_get_Node_allocator() _GLIBCXX_NOEXCEPT
+ { return *static_cast<_Node_alloc_type*>(&_M_impl); }
+
+ const _Node_alloc_type&
+ _M_get_Node_allocator() const _GLIBCXX_NOEXCEPT
+ { return *static_cast<const _Node_alloc_type*>(&_M_impl); }
+
+ _Tp_alloc_type
+ _M_get_Tp_allocator() const _GLIBCXX_NOEXCEPT
+ { return _Tp_alloc_type(_M_get_Node_allocator()); }
+
+ allocator_type
+ get_allocator() const _GLIBCXX_NOEXCEPT
+ { return allocator_type(_M_get_Node_allocator()); }
+
+ _List_base()
+ : _M_impl()
+ { _M_init(); }
+
+ _List_base(const _Node_alloc_type& __a) _GLIBCXX_NOEXCEPT
+ : _M_impl(__a)
+ { _M_init(); }
+
+#if __cplusplus >= 201103L
+ _List_base(_List_base&& __x) noexcept
+ : _M_impl(std::move(__x._M_get_Node_allocator()))
+ {
+ auto* const __xnode = std::__addressof(__x._M_impl._M_node);
+ if (__xnode->_M_next == __xnode)
+ _M_init();
+ else
+ {
+ auto* const __node = std::__addressof(_M_impl._M_node);
+ __node->_M_next = __xnode->_M_next;
+ __node->_M_prev = __xnode->_M_prev;
+ __node->_M_next->_M_prev = __node->_M_prev->_M_next = __node;
+ _M_set_size(__x._M_get_size());
+ __x._M_init();
+ }
+ }
+#endif
+
+ // This is what actually destroys the list.
+ ~_List_base() _GLIBCXX_NOEXCEPT
+ { _M_clear(); }
+
+ void
+ _M_clear() _GLIBCXX_NOEXCEPT;
+
+ void
+ _M_init() _GLIBCXX_NOEXCEPT
+ {
+ this->_M_impl._M_node._M_next = &this->_M_impl._M_node;
+ this->_M_impl._M_node._M_prev = &this->_M_impl._M_node;
+ _M_set_size(0);
+ }
+ };
+
/**
- * @brief A standard container with linear time access to elements, and
- * fixed time insertion/deletion at any point in the sequence.
+ * @brief A standard container with linear time access to elements,
+ * and fixed time insertion/deletion at any point in the sequence.
*
- * @ingroup Containers
- * @ingroup Sequences
+ * @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#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.
+ * 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.
+ * Also unlike the other standard containers, std::list provides
+ * specialized algorithms %unique to linked lists, such as
+ * splicing, sorting, and in-place reversal.
*
- * @if maint
* 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.
+ * 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.
- * @endif
+ * 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 = allocator<_Tp> >
- class list : protected _List_base<_Tp, _Alloc>
- {
- // concept requirements
- __glibcpp_class_requires(_Tp, _SGIAssignableConcept)
-
- typedef _List_base<_Tp, _Alloc> _Base;
-
- public:
- typedef _Tp value_type;
- typedef value_type* pointer;
- typedef const value_type* const_pointer;
- typedef _List_iterator<_Tp,_Tp&,_Tp*> iterator;
- typedef _List_iterator<_Tp,const _Tp&,const _Tp*> const_iterator;
- typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
- typedef std::reverse_iterator<iterator> reverse_iterator;
- typedef value_type& reference;
- typedef const value_type& const_reference;
- typedef size_t size_type;
- typedef ptrdiff_t difference_type;
- typedef typename _Base::allocator_type allocator_type;
-
- protected:
- // Note that pointers-to-_Node's can be ctor-converted to iterator types.
- typedef _List_node<_Tp> _Node;
-
- /** @if maint
- * One data member plus two memory-handling functions. If the _Alloc
- * type requires separate instances, then one of those will also be
- * included, accumulated from the topmost parent.
- * @endif
- */
- using _Base::_M_node;
- using _Base::_M_put_node;
- using _Base::_M_get_node;
-
- /**
- * @if maint
- * @param x An instance of user data.
- *
- * Allocates space for a new node and constructs a copy of @a x in it.
- * @endif
- */
- _Node*
- _M_create_node(const value_type& __x)
+ template<typename _Tp, typename _Alloc = std::allocator<_Tp> >
+ class _GLIBCXX_DEFAULT_ABI_TAG list : protected _List_base<_Tp, _Alloc>
{
- _Node* __p = _M_get_node();
- try {
- _Construct(&__p->_M_data, __x);
+ // 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;
+ typedef typename _Base::_Node_alloc_type _Node_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 __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
+ {
+ _M_get_Tp_allocator().construct
+ (std::__addressof(__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 Creates a %list with no elements.
+ */
+ list()
+#if __cplusplus >= 201103L
+ noexcept(is_nothrow_default_constructible<_Node_alloc_type>::value)
+#endif
+ : _Base() { }
+
+ /**
+ * @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.
+ *
+ * This constructor fills the %list with @a __n default
+ * constructed elements.
+ */
+ explicit
+ list(size_type __n)
+ : _Base()
+ { _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.
+ */
+ list(const list& __x)
+ : _Base(__x._M_get_Node_allocator())
+ { _M_initialize_dispatch(__x.begin(), __x.end(), __false_type()); }
+
+#if __cplusplus >= 201103L
+ /**
+ * @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) noexcept
+ : _Base(std::move(__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(_Node_alloc_type(__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)).
+ */
+#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
+
+ /**
+ * 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);
+
+#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).
+ * @a __x is a valid, but unspecified %list
+ */
+ list&
+ operator=(list&& __x)
+ {
+ // NB: DR 1204.
+ // NB: DR 675.
+ this->clear();
+ this->swap(__x);
+ return *this;
}
- catch(...)
+
+ /**
+ * @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)
{
- _M_put_node(__p);
- __throw_exception_again;
+ this->assign(__l.begin(), __l.end());
+ return *this;
}
- return __p;
- }
-
- /**
- * @if maint
- * Allocates space for a new node and default-constructs a new instance
- * of @c value_type in it.
- * @endif
- */
- _Node*
- _M_create_node()
- {
- _Node* __p = _M_get_node();
- try {
- _Construct(&__p->_M_data);
+#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.
+ */
+#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->assign(__l.begin(), __l.end()); }
+#endif
+
+ /// Get a copy of the memory allocation object.
+ allocator_type
+ get_allocator() const _GLIBCXX_NOEXCEPT
+ { 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() _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().)
+ */
+ 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 this->_M_node_count(); }
+
+ /** Returns the size() of the largest possible %list. */
+ size_type
+ max_size() const _GLIBCXX_NOEXCEPT
+ { return _M_get_Node_allocator().max_size(); }
+
+#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>
+ 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() _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>
+ 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() _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);
}
- catch(...)
+#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
{
- _M_put_node(__p);
- __throw_exception_again;
+ while (__first != __last)
+ __first = erase(__first);
+ return __last._M_const_cast();
}
- return __p;
- }
-
- public:
- // [23.2.2.1] construct/copy/destroy
- // (assign() and get_allocator() are also listed in this section)
- /**
- * @brief Default constructor creates no elements.
- */
- explicit
- list(const allocator_type& __a = allocator_type())
- : _Base(__a) { }
-
- /**
- * @brief Create a %list with copies of an exemplar element.
- * @param n The number of elements to initially create.
- * @param value An element to copy.
- *
- * 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(__a)
- { this->insert(begin(), __n, __value); }
-
- /**
- * @brief Create a %list with default elements.
- * @param n The number of elements to initially create.
- *
- * This constructor fills the %list with @a n copies of a
- * default-constructed element.
- */
- explicit
- list(size_type __n)
- : _Base(allocator_type())
- { this->insert(begin(), __n, value_type()); }
-
- /**
- * @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.get_allocator())
- { this->insert(begin(), __x.begin(), __x.end()); }
-
- /**
- * @brief Builds a %list from a range.
- * @param first An input iterator.
- * @param last An input iterator.
- *
- * Create a %list consisting of copies of the elements from [first,last).
- * This is linear in N (where N is distance(first,last)).
- *
- * @if maint
- * We don't need any dispatching tricks here, because insert does all of
- * that anyway.
- * @endif
- */
- template<typename _InputIterator>
- list(_InputIterator __first, _InputIterator __last,
- const allocator_type& __a = allocator_type())
- : _Base(__a)
- { this->insert(begin(), __first, __last); }
-
- /**
- * The dtor only erases the elements, and note that if the elements
- * themselves are pointers, the pointed-to memory is not touched in any
- * way. Managing the pointer is the user's responsibilty.
- */
- ~list() { }
-
- /**
- * @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);
-
- /**
- * @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 [first,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>
+
+ /**
+ * @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
- assign(_InputIterator __first, _InputIterator __last)
+ swap(list& __x)
{
- // Check whether it's an integral type. If so, it's not an iterator.
- typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
- _M_assign_dispatch(__first, __last, _Integral());
+ __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);
+
+ // _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());
}
-
- /// 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 static_cast<_Node*>(this->_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 static_cast<_Node*>(this->_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 this->_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 this->_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()); }
-
- // [23.2.2.2] capacity
- /**
- * Returns true if the %list is empty. (Thus begin() would equal end().)
- */
- bool
- empty() const { return this->_M_node->_M_next == this->_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 size_type(-1); }
-
- /**
- * @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);
-
- /**
- * @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 the %list is extended and new elements
- * are default-constructed.
- */
- void
- resize(size_type __new_size) { this->resize(__new_size, 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() { return *(--end()); }
-
- /**
- * Returns a read-only (constant) reference to the data at the last
- * element of the %list.
- */
- const_reference
- back() const { return *(--end()); }
-
- // [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->insert(begin(), __x); }
-
- /**
- * @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->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->insert(end(), __x); }
-
- /**
- * @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()
- {
- iterator __tmp = end();
- this->erase(--__tmp);
- }
-
- /**
- * @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);
-
- /**
- * @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.
- *
- * Due to the nature of a %list this operation can be done in constant
- * time, and does not invalidate iterators and references.
- */
- void
- insert(iterator __position, size_type __n, const value_type& __x)
- { _M_fill_insert(__position, __n, __x); }
-
- /**
- * @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 [first,last)
- * into the %list before the location specified by @a pos.
- *
- * Due to the nature of a %list this operation can be done in constant
- * time, and does not invalidate iterators and references.
- */
- template<typename _InputIterator>
+
+ /**
+ * 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
- insert(iterator __position, _InputIterator __first, _InputIterator __last)
+ clear() _GLIBCXX_NOEXCEPT
{
- // Check whether it's an integral type. If so, it's not an iterator.
- typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
- _M_insert_dispatch(__position, __first, __last, _Integral());
+ _Base::_M_clear();
+ _Base::_M_init();
}
-
- /**
- * @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 responsibilty.
- */
- 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 [first,last) and
- * shorten the %list accordingly.
- *
- * 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 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 responsibilty.
- */
- iterator
- erase(iterator __first, iterator __last)
- {
- while (__first != __last)
- 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.
- * (It is only swapping a single pointer, so it should be quite fast.)
- * Note that the global std::swap() function is specialized such that
- * std::swap(l1,l2) will feed to this function.
- */
- void
- swap(list& __x) { std::swap(this->_M_node, __x._M_node); }
-
- /**
- * 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 responsibilty.
- */
- void
- clear() { _Base::__clear(); }
-
- // [23.2.2.4] list operations
- /**
- * @doctodo
- */
- void
- splice(iterator __position, list& __x)
- {
- if (!__x.empty())
- this->_M_transfer(__position, __x.begin(), __x.end());
- }
-
- /**
- * @doctodo
- */
- void
- splice(iterator __position, list&, iterator __i)
- {
- iterator __j = __i;
- ++__j;
- if (__position == __i || __position == __j) return;
- this->_M_transfer(__position, __i, __j);
- }
-
- /**
- * @doctodo
- */
- void
- splice(iterator __position, list&, iterator __first, iterator __last)
- {
- if (__first != __last)
- this->_M_transfer(__position, __first, __last);
- }
-
- /**
- * @doctodo
- */
- void
- remove(const _Tp& __value);
-
- /**
- * @doctodo
- */
- template<typename _Predicate>
+
+ // [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 != &__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 != &__x)
+ _M_check_equal_allocators(__x);
+
+ size_t __n = this->_M_distance(__first._M_node, __last._M_node);
+ 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
+
+ /**
+ * @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.
+ * @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>
+ 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.
+ * @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>
+ 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.
+ */
+#if __cplusplus >= 201103L
+ void
+ merge(list&& __x);
+
+ void
+ merge(list& __x)
+ { merge(std::move(__x)); }
+#else
void
- remove_if(_Predicate);
-
- /**
- * @doctodo
- */
- void
- unique();
-
- /**
- * @doctodo
- */
- template<typename _BinaryPredicate>
+ 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
- unique(_BinaryPredicate);
-
- /**
- * @doctodo
- */
- void
- merge(list& __x);
-
- /**
- * @doctodo
- */
- template<typename _StrictWeakOrdering>
+ 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
- merge(list&, _StrictWeakOrdering);
-
- /**
- * @doctodo
- */
- void
- reverse() { __List_base_reverse(this->_M_node); }
-
- /**
- * @doctodo
- */
- void
- sort();
-
- /**
- * @doctodo
- */
- template<typename _StrictWeakOrdering>
+ 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
- sort(_StrictWeakOrdering);
-
- protected:
- // Internal assign functions follow.
-
- // called by the range assign to implement [23.1.1]/9
- template<typename _Integer>
+ _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_assign_dispatch(_Integer __n, _Integer __val, __true_type)
+ _M_default_initialize(size_type __n)
{
- _M_fill_assign(static_cast<size_type>(__n),
- static_cast<value_type>(__val));
+ for (; __n; --__n)
+ emplace_back();
}
-
- // called by the range assign to implement [23.1.1]/9
- template<typename _InputIterator>
+
+ // 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_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);
-
-
- // Internal insert functions follow.
-
- // called by the range insert to implement [23.1.1]/9
- template<typename _Integer>
+ _M_fill_assign(size_type __n, const value_type& __val);
+
+
+ // Moves the elements from [first,last) before position.
void
- _M_insert_dispatch(iterator __pos, _Integer __n, _Integer __x,
- __true_type)
+ _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)
{
- _M_fill_insert(__pos, static_cast<size_type>(__n),
- static_cast<value_type>(__x));
+ _Node* __tmp = _M_create_node(__x);
+ __tmp->_M_hook(__position._M_node);
+ this->_M_inc_size(1);
}
-
- // called by the range insert to implement [23.1.1]/9
- template<typename _InputIterator>
+#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_insert_dispatch(iterator __pos,
- _InputIterator __first, _InputIterator __last,
- __false_type)
+ _M_erase(iterator __position) _GLIBCXX_NOEXCEPT
{
- for ( ; __first != __last; ++__first)
- insert(__pos, *__first);
+ this->_M_dec_size(1);
+ __position._M_node->_M_unhook();
+ _Node* __n = static_cast<_Node*>(__position._M_node);
+#if __cplusplus >= 201103L
+ _M_get_Node_allocator().destroy(__n);
+#else
+ _M_get_Tp_allocator().destroy(std::__addressof(__n->_M_data));
+#endif
+ _M_put_node(__n);
}
-
- // Called by insert(p,n,x), and the range insert when it turns out to be
- // the same thing.
- void
- _M_fill_insert(iterator __pos, size_type __n, const value_type& __x)
- {
- for ( ; __n > 0; --__n)
- insert(__pos, __x);
- }
-
-
- // Moves the elements from [first,last) before position.
- void
- _M_transfer(iterator __position, iterator __first, iterator __last)
- {
- if (__position != __last) {
- // Remove [first, last) from its old position.
- __last._M_node->_M_prev->_M_next = __position._M_node;
- __first._M_node->_M_prev->_M_next = __last._M_node;
- __position._M_node->_M_prev->_M_next = __first._M_node;
-
- // Splice [first, last) into its new position.
- _List_node_base* __tmp = __position._M_node->_M_prev;
- __position._M_node->_M_prev = __last._M_node->_M_prev;
- __last._M_node->_M_prev = __first._M_node->_M_prev;
- __first._M_node->_M_prev = __tmp;
+
+ // 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();
}
- }
- };
-
-
+ };
+
/**
* @brief List equality comparison.
- * @param x A %list.
- * @param y A %list of the same type as @a x.
+ * @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.
+ * 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)
+ inline bool
+ operator==(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
- typedef typename list<_Tp,_Alloc>::const_iterator const_iterator;
+ 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;
- }
+ 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.
+ * @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 <.
*/
template<typename _Tp, typename _Alloc>
inline bool
- operator<(const list<_Tp,_Alloc>& __x, const list<_Tp,_Alloc>& __y)
- {
- return lexicographical_compare(__x.begin(), __x.end(),
- __y.begin(), __y.end());
- }
-
+ 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)
+ 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)
+ 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)
+ 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)
+ 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); }
+
+_GLIBCXX_END_NAMESPACE_CONTAINER
} // namespace std
-#endif /* __GLIBCPP_INTERNAL_LIST_H */
+#endif /* _STL_LIST_H */
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