962 lines
28 KiB
C++
962 lines
28 KiB
C++
// <forward_list> -*- C++ -*-
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// Copyright (C) 2010-2022 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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/** @file debug/forward_list
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* This file is a GNU debug extension to the Standard C++ Library.
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*/
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#ifndef _GLIBCXX_DEBUG_FORWARD_LIST
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#define _GLIBCXX_DEBUG_FORWARD_LIST 1
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#pragma GCC system_header
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#include <bits/c++config.h>
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namespace std _GLIBCXX_VISIBILITY(default) { namespace __debug {
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template<typename _Tp, typename _Allocator> class forward_list;
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} } // namespace std::__debug
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#include <forward_list>
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#include <debug/safe_sequence.h>
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#include <debug/safe_container.h>
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#include <debug/safe_iterator.h>
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// Special validity check for forward_list ranges.
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#define __glibcxx_check_valid_fl_range(_First,_Last,_Dist) \
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_GLIBCXX_DEBUG_VERIFY(_First._M_valid_range(_Last, _Dist, false), \
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_M_message(__gnu_debug::__msg_valid_range) \
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._M_iterator(_First, #_First) \
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._M_iterator(_Last, #_Last))
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namespace __gnu_debug
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{
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/// Special iterators swap and invalidation for forward_list because of the
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/// before_begin iterator.
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template<typename _SafeSequence>
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class _Safe_forward_list
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: public _Safe_sequence<_SafeSequence>
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{
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_SafeSequence&
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_M_this() noexcept
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{ return *static_cast<_SafeSequence*>(this); }
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static void
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_M_swap_aux(_Safe_sequence_base& __lhs,
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_Safe_iterator_base*& __lhs_iterators,
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_Safe_sequence_base& __rhs,
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_Safe_iterator_base*& __rhs_iterators);
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void _M_swap_single(_Safe_sequence_base&) noexcept;
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protected:
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void
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_M_invalidate_all()
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{
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using _Base_const_iterator = __decltype(_M_this()._M_base().cend());
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this->_M_invalidate_if([this](_Base_const_iterator __it)
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{
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return __it != _M_this()._M_base().cbefore_begin()
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&& __it != _M_this()._M_base().cend(); });
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}
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void _M_swap(_Safe_sequence_base&) noexcept;
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};
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template<typename _SafeSequence>
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void
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_Safe_forward_list<_SafeSequence>::
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_M_swap_aux(_Safe_sequence_base& __lhs,
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_Safe_iterator_base*& __lhs_iterators,
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_Safe_sequence_base& __rhs,
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_Safe_iterator_base*& __rhs_iterators)
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{
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using const_iterator = typename _SafeSequence::const_iterator;
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_Safe_iterator_base* __bbegin_its = 0;
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_Safe_iterator_base* __last_bbegin = 0;
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_SafeSequence& __rseq = static_cast<_SafeSequence&>(__rhs);
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for (_Safe_iterator_base* __iter = __lhs_iterators; __iter;)
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{
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// Even iterator is cast to const_iterator, not a problem.
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_Safe_iterator_base* __victim_base = __iter;
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const_iterator* __victim =
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static_cast<const_iterator*>(__victim_base);
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__iter = __iter->_M_next;
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if (__victim->base() == __rseq._M_base().cbefore_begin())
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{
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__victim->_M_unlink();
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if (__lhs_iterators == __victim_base)
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__lhs_iterators = __victim_base->_M_next;
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if (__bbegin_its)
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{
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__victim_base->_M_next = __bbegin_its;
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__bbegin_its->_M_prior = __victim_base;
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}
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else
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__last_bbegin = __victim_base;
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__bbegin_its = __victim_base;
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}
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else
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__victim_base->_M_sequence = std::__addressof(__lhs);
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}
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if (__bbegin_its)
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{
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if (__rhs_iterators)
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{
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__rhs_iterators->_M_prior = __last_bbegin;
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__last_bbegin->_M_next = __rhs_iterators;
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}
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__rhs_iterators = __bbegin_its;
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}
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}
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template<typename _SafeSequence>
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void
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_Safe_forward_list<_SafeSequence>::
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_M_swap_single(_Safe_sequence_base& __other) noexcept
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{
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std::swap(_M_this()._M_iterators, __other._M_iterators);
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std::swap(_M_this()._M_const_iterators, __other._M_const_iterators);
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// Useless, always 1 on forward_list
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//std::swap(_M_this()_M_version, __other._M_version);
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_Safe_iterator_base* __this_its = _M_this()._M_iterators;
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_M_swap_aux(__other, __other._M_iterators,
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_M_this(), _M_this()._M_iterators);
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_Safe_iterator_base* __this_const_its = _M_this()._M_const_iterators;
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_M_swap_aux(__other, __other._M_const_iterators,
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_M_this(), _M_this()._M_const_iterators);
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_M_swap_aux(_M_this(), __this_its,
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__other, __other._M_iterators);
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_M_swap_aux(_M_this(), __this_const_its,
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__other, __other._M_const_iterators);
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}
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/* Special forward_list _M_swap version that does not swap the
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* before-begin ownership.*/
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template<typename _SafeSequence>
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void
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_Safe_forward_list<_SafeSequence>::
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_M_swap(_Safe_sequence_base& __other) noexcept
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{
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// We need to lock both sequences to swap
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using namespace __gnu_cxx;
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__mutex *__this_mutex = &_M_this()._M_get_mutex();
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__mutex *__other_mutex =
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&static_cast<_SafeSequence&>(__other)._M_get_mutex();
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if (__this_mutex == __other_mutex)
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{
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__scoped_lock __lock(*__this_mutex);
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_M_swap_single(__other);
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}
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else
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{
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__scoped_lock __l1(__this_mutex < __other_mutex
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? *__this_mutex : *__other_mutex);
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__scoped_lock __l2(__this_mutex < __other_mutex
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? *__other_mutex : *__this_mutex);
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_M_swap_single(__other);
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}
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}
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}
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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namespace __debug
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{
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/// Class std::forward_list with safety/checking/debug instrumentation.
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template<typename _Tp, typename _Alloc = std::allocator<_Tp> >
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class forward_list
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: public __gnu_debug::_Safe_container<
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forward_list<_Tp, _Alloc>, _Alloc, __gnu_debug::_Safe_forward_list>,
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public _GLIBCXX_STD_C::forward_list<_Tp, _Alloc>
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{
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typedef _GLIBCXX_STD_C::forward_list<_Tp, _Alloc> _Base;
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typedef __gnu_debug::_Safe_container<
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forward_list, _Alloc, __gnu_debug::_Safe_forward_list> _Safe;
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typedef typename _Base::iterator _Base_iterator;
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typedef typename _Base::const_iterator _Base_const_iterator;
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template<typename _ItT, typename _SeqT, typename _CatT>
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friend class ::__gnu_debug::_Safe_iterator;
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// Reference wrapper for base class. See PR libstdc++/90102.
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struct _Base_ref
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{
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_Base_ref(const _Base& __r) : _M_ref(__r) { }
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const _Base& _M_ref;
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};
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public:
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typedef typename _Base::reference reference;
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typedef typename _Base::const_reference const_reference;
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typedef __gnu_debug::_Safe_iterator<
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_Base_iterator, forward_list> iterator;
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typedef __gnu_debug::_Safe_iterator<
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_Base_const_iterator, forward_list> const_iterator;
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typedef typename _Base::size_type size_type;
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typedef typename _Base::difference_type difference_type;
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typedef _Tp value_type;
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typedef typename _Base::allocator_type allocator_type;
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typedef typename _Base::pointer pointer;
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typedef typename _Base::const_pointer const_pointer;
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// 23.2.3.1 construct/copy/destroy:
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forward_list() = default;
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explicit
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forward_list(const allocator_type& __al) noexcept
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: _Base(__al) { }
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forward_list(const forward_list& __list, const allocator_type& __al)
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: _Base(__list, __al)
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{ }
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forward_list(forward_list&& __list, const allocator_type& __al)
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noexcept(
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std::is_nothrow_constructible<_Base,
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_Base, const allocator_type&>::value )
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: _Safe(std::move(__list), __al),
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_Base(std::move(__list), __al)
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{ }
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explicit
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forward_list(size_type __n, const allocator_type& __al = allocator_type())
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: _Base(__n, __al)
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{ }
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forward_list(size_type __n, const __type_identity_t<_Tp>& __value,
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const allocator_type& __al = allocator_type())
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: _Base(__n, __value, __al)
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{ }
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template<typename _InputIterator,
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typename = std::_RequireInputIter<_InputIterator>>
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forward_list(_InputIterator __first, _InputIterator __last,
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const allocator_type& __al = allocator_type())
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: _Base(__gnu_debug::__base(
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__glibcxx_check_valid_constructor_range(__first, __last)),
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__gnu_debug::__base(__last), __al)
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{ }
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forward_list(const forward_list&) = default;
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forward_list(forward_list&&) = default;
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forward_list(std::initializer_list<_Tp> __il,
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const allocator_type& __al = allocator_type())
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: _Base(__il, __al)
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{ }
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~forward_list() = default;
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forward_list(_Base_ref __x) : _Base(__x._M_ref) { }
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forward_list&
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operator=(const forward_list&) = default;
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forward_list&
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operator=(forward_list&&) = default;
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forward_list&
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operator=(std::initializer_list<_Tp> __il)
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{
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_Base::operator=(__il);
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this->_M_invalidate_all();
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return *this;
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}
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template<typename _InputIterator,
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typename = std::_RequireInputIter<_InputIterator>>
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void
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assign(_InputIterator __first, _InputIterator __last)
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{
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typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
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__glibcxx_check_valid_range2(__first, __last, __dist);
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if (__dist.second >= __gnu_debug::__dp_sign)
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_Base::assign(__gnu_debug::__unsafe(__first),
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__gnu_debug::__unsafe(__last));
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else
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_Base::assign(__first, __last);
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this->_M_invalidate_all();
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}
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void
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assign(size_type __n, const _Tp& __val)
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{
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_Base::assign(__n, __val);
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this->_M_invalidate_all();
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}
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void
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assign(std::initializer_list<_Tp> __il)
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{
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_Base::assign(__il);
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this->_M_invalidate_all();
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}
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using _Base::get_allocator;
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// iterators:
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[[__nodiscard__]]
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iterator
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before_begin() noexcept
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{ return { _Base::before_begin(), this }; }
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[[__nodiscard__]]
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const_iterator
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before_begin() const noexcept
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{ return { _Base::before_begin(), this }; }
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[[__nodiscard__]]
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iterator
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begin() noexcept
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{ return { _Base::begin(), this }; }
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[[__nodiscard__]]
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const_iterator
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begin() const noexcept
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{ return { _Base::begin(), this }; }
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[[__nodiscard__]]
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iterator
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end() noexcept
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{ return { _Base::end(), this }; }
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[[__nodiscard__]]
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const_iterator
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end() const noexcept
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{ return { _Base::end(), this }; }
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[[__nodiscard__]]
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const_iterator
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cbegin() const noexcept
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{ return { _Base::cbegin(), this }; }
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[[__nodiscard__]]
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const_iterator
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cbefore_begin() const noexcept
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{ return { _Base::cbefore_begin(), this }; }
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[[__nodiscard__]]
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const_iterator
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cend() const noexcept
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{ return { _Base::cend(), this }; }
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using _Base::empty;
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using _Base::max_size;
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// element access:
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[[__nodiscard__]]
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reference
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front()
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{
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__glibcxx_check_nonempty();
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return _Base::front();
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}
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[[__nodiscard__]]
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const_reference
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front() const
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{
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__glibcxx_check_nonempty();
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return _Base::front();
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}
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// modifiers:
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using _Base::emplace_front;
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using _Base::push_front;
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void
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pop_front()
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{
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__glibcxx_check_nonempty();
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this->_M_invalidate_if([this](_Base_const_iterator __it)
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{ return __it == this->_M_base().cbegin(); });
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_Base::pop_front();
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}
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template<typename... _Args>
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iterator
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emplace_after(const_iterator __pos, _Args&&... __args)
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{
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__glibcxx_check_insert_after(__pos);
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return { _Base::emplace_after(__pos.base(),
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std::forward<_Args>(__args)...),
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this };
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}
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iterator
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insert_after(const_iterator __pos, const _Tp& __val)
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{
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__glibcxx_check_insert_after(__pos);
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return { _Base::insert_after(__pos.base(), __val), this };
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}
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iterator
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insert_after(const_iterator __pos, _Tp&& __val)
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{
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__glibcxx_check_insert_after(__pos);
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return { _Base::insert_after(__pos.base(), std::move(__val)), this };
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}
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iterator
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insert_after(const_iterator __pos, size_type __n, const _Tp& __val)
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{
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__glibcxx_check_insert_after(__pos);
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return { _Base::insert_after(__pos.base(), __n, __val), this };
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}
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template<typename _InputIterator,
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typename = std::_RequireInputIter<_InputIterator>>
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iterator
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insert_after(const_iterator __pos,
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_InputIterator __first, _InputIterator __last)
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{
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typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
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__glibcxx_check_insert_range_after(__pos, __first, __last, __dist);
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if (__dist.second >= __gnu_debug::__dp_sign)
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return
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{
|
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_Base::insert_after(__pos.base(),
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__gnu_debug::__unsafe(__first),
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__gnu_debug::__unsafe(__last)),
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this
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};
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else
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return { _Base::insert_after(__pos.base(), __first, __last), this };
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}
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iterator
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insert_after(const_iterator __pos, std::initializer_list<_Tp> __il)
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{
|
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__glibcxx_check_insert_after(__pos);
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return { _Base::insert_after(__pos.base(), __il), this };
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}
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iterator
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erase_after(const_iterator __pos)
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{
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__glibcxx_check_erase_after(__pos);
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_Base_const_iterator __next = std::next(__pos.base());
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this->_M_invalidate_if([__next](_Base_const_iterator __it)
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{ return __it == __next; });
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return { _Base::erase_after(__pos.base()), this };
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}
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iterator
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erase_after(const_iterator __pos, const_iterator __last)
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{
|
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__glibcxx_check_erase_range_after(__pos, __last);
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for (_Base_const_iterator __victim = std::next(__pos.base());
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__victim != __last.base(); ++__victim)
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{
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_GLIBCXX_DEBUG_VERIFY(__victim != _Base::cend(),
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_M_message(__gnu_debug::__msg_valid_range2)
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._M_sequence(*this, "this")
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._M_iterator(__pos, "pos")
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._M_iterator(__last, "last"));
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this->_M_invalidate_if([__victim](_Base_const_iterator __it)
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{ return __it == __victim; });
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}
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return { _Base::erase_after(__pos.base(), __last.base()), this };
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}
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void
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swap(forward_list& __list)
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noexcept( noexcept(declval<_Base&>().swap(__list)) )
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{
|
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_Safe::_M_swap(__list);
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_Base::swap(__list);
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}
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void
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resize(size_type __sz)
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{
|
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this->_M_detach_singular();
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|
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// if __sz < size(), invalidate all iterators in [begin+__sz, end()
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_Base_iterator __victim = _Base::begin();
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_Base_iterator __end = _Base::end();
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for (size_type __i = __sz; __victim != __end && __i > 0; --__i)
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++__victim;
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for (; __victim != __end; ++__victim)
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{
|
|
this->_M_invalidate_if([__victim](_Base_const_iterator __it)
|
|
{ return __it == __victim; });
|
|
}
|
|
|
|
__try
|
|
{
|
|
_Base::resize(__sz);
|
|
}
|
|
__catch(...)
|
|
{
|
|
this->_M_revalidate_singular();
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
void
|
|
resize(size_type __sz, const value_type& __val)
|
|
{
|
|
this->_M_detach_singular();
|
|
|
|
// if __sz < size(), invalidate all iterators in [begin+__sz, end())
|
|
_Base_iterator __victim = _Base::begin();
|
|
_Base_iterator __end = _Base::end();
|
|
for (size_type __i = __sz; __victim != __end && __i > 0; --__i)
|
|
++__victim;
|
|
|
|
for (; __victim != __end; ++__victim)
|
|
{
|
|
this->_M_invalidate_if([__victim](_Base_const_iterator __it)
|
|
{ return __it == __victim; });
|
|
}
|
|
|
|
__try
|
|
{
|
|
_Base::resize(__sz, __val);
|
|
}
|
|
__catch(...)
|
|
{
|
|
this->_M_revalidate_singular();
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
void
|
|
clear() noexcept
|
|
{
|
|
_Base::clear();
|
|
this->_M_invalidate_all();
|
|
}
|
|
|
|
// 23.2.3.5 forward_list operations:
|
|
void
|
|
splice_after(const_iterator __pos, forward_list&& __list)
|
|
{
|
|
__glibcxx_check_insert_after(__pos);
|
|
_GLIBCXX_DEBUG_VERIFY(std::__addressof(__list) != this,
|
|
_M_message(__gnu_debug::__msg_self_splice)
|
|
._M_sequence(*this, "this"));
|
|
_GLIBCXX_DEBUG_VERIFY(__list.get_allocator() == this->get_allocator(),
|
|
_M_message(__gnu_debug::__msg_splice_alloc)
|
|
._M_sequence(*this)
|
|
._M_sequence(__list, "__list"));
|
|
this->_M_transfer_from_if(__list, [&__list](_Base_const_iterator __it)
|
|
{
|
|
return __it != __list._M_base().cbefore_begin()
|
|
&& __it != __list._M_base().end();
|
|
});
|
|
_Base::splice_after(__pos.base(), std::move(__list));
|
|
}
|
|
|
|
void
|
|
splice_after(const_iterator __pos, forward_list& __list)
|
|
{ splice_after(__pos, std::move(__list)); }
|
|
|
|
void
|
|
splice_after(const_iterator __pos, forward_list&& __list,
|
|
const_iterator __i)
|
|
{
|
|
__glibcxx_check_insert_after(__pos);
|
|
_GLIBCXX_DEBUG_VERIFY(__i._M_before_dereferenceable(),
|
|
_M_message(__gnu_debug::__msg_splice_bad)
|
|
._M_iterator(__i, "__i"));
|
|
_GLIBCXX_DEBUG_VERIFY(__i._M_attached_to(std::__addressof(__list)),
|
|
_M_message(__gnu_debug::__msg_splice_other)
|
|
._M_iterator(__i, "__i")
|
|
._M_sequence(__list, "__list"));
|
|
_GLIBCXX_DEBUG_VERIFY(__list.get_allocator() == this->get_allocator(),
|
|
_M_message(__gnu_debug::__msg_splice_alloc)
|
|
._M_sequence(*this)
|
|
._M_sequence(__list, "__list"));
|
|
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
// 250. splicing invalidates iterators
|
|
_Base_const_iterator __next = std::next(__i.base());
|
|
this->_M_transfer_from_if(__list, [__next](_Base_const_iterator __it)
|
|
{ return __it == __next; });
|
|
_Base::splice_after(__pos.base(), std::move(__list), __i.base());
|
|
}
|
|
|
|
void
|
|
splice_after(const_iterator __pos, forward_list& __list,
|
|
const_iterator __i)
|
|
{ splice_after(__pos, std::move(__list), __i); }
|
|
|
|
void
|
|
splice_after(const_iterator __pos, forward_list&& __list,
|
|
const_iterator __before, const_iterator __last)
|
|
{
|
|
typename __gnu_debug::_Distance_traits<const_iterator>::__type __dist;
|
|
auto __listptr = std::__addressof(__list);
|
|
__glibcxx_check_insert_after(__pos);
|
|
__glibcxx_check_valid_fl_range(__before, __last, __dist);
|
|
_GLIBCXX_DEBUG_VERIFY(__before._M_attached_to(__listptr),
|
|
_M_message(__gnu_debug::__msg_splice_other)
|
|
._M_sequence(__list, "list")
|
|
._M_iterator(__before, "before"));
|
|
_GLIBCXX_DEBUG_VERIFY(__before._M_dereferenceable()
|
|
|| __before._M_is_before_begin(),
|
|
_M_message(__gnu_debug::__msg_valid_range2)
|
|
._M_sequence(__list, "list")
|
|
._M_iterator(__before, "before")
|
|
._M_iterator(__last, "last"));
|
|
_GLIBCXX_DEBUG_VERIFY(__before != __last,
|
|
_M_message(__gnu_debug::__msg_valid_range2)
|
|
._M_sequence(__list, "list")
|
|
._M_iterator(__before, "before")
|
|
._M_iterator(__last, "last"));
|
|
_GLIBCXX_DEBUG_VERIFY(__list.get_allocator() == this->get_allocator(),
|
|
_M_message(__gnu_debug::__msg_splice_alloc)
|
|
._M_sequence(*this)
|
|
._M_sequence(__list, "__list"));
|
|
|
|
for (_Base_const_iterator __tmp = std::next(__before.base());
|
|
__tmp != __last.base(); ++__tmp)
|
|
{
|
|
_GLIBCXX_DEBUG_VERIFY(__tmp != __list._M_base().end(),
|
|
_M_message(__gnu_debug::__msg_valid_range2)
|
|
._M_sequence(__list, "list")
|
|
._M_iterator(__before, "before")
|
|
._M_iterator(__last, "last"));
|
|
_GLIBCXX_DEBUG_VERIFY(__listptr != this || __tmp != __pos.base(),
|
|
_M_message(__gnu_debug::__msg_splice_overlap)
|
|
._M_iterator(__tmp, "position")
|
|
._M_iterator(__before, "before")
|
|
._M_iterator(__last, "last"));
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
// 250. splicing invalidates iterators
|
|
this->_M_transfer_from_if(__list, [__tmp](_Base_const_iterator __it)
|
|
{ return __it == __tmp; });
|
|
}
|
|
|
|
_Base::splice_after(__pos.base(), std::move(__list),
|
|
__before.base(), __last.base());
|
|
}
|
|
|
|
void
|
|
splice_after(const_iterator __pos, forward_list& __list,
|
|
const_iterator __before, const_iterator __last)
|
|
{ splice_after(__pos, std::move(__list), __before, __last); }
|
|
|
|
private:
|
|
#if __cplusplus > 201703L
|
|
using __remove_return_type = size_type;
|
|
# define _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG \
|
|
__attribute__((__abi_tag__("__cxx20")))
|
|
# define _GLIBCXX20_ONLY(__expr) __expr
|
|
#else
|
|
using __remove_return_type = void;
|
|
# define _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG
|
|
# define _GLIBCXX20_ONLY(__expr)
|
|
#endif
|
|
|
|
public:
|
|
_GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG
|
|
__remove_return_type
|
|
remove(const _Tp& __val)
|
|
{
|
|
if (!this->_M_iterators && !this->_M_const_iterators)
|
|
return _Base::remove(__val);
|
|
|
|
size_type __removed __attribute__((__unused__)) = 0;
|
|
_Base __to_destroy(get_allocator());
|
|
_Base_const_iterator __x = _Base::cbefore_begin();
|
|
_Base_const_iterator __old = __x++;
|
|
while (__x != _Base::cend())
|
|
{
|
|
if (*__x == __val)
|
|
{
|
|
_Base_const_iterator __next = std::next(__old);
|
|
this->_M_invalidate_if([__next](_Base_const_iterator __it)
|
|
{ return __it == __next; });
|
|
__to_destroy.splice_after(__to_destroy.cbefore_begin(),
|
|
*this, __old);
|
|
__x = __old;
|
|
_GLIBCXX20_ONLY( __removed++ );
|
|
}
|
|
|
|
__old = __x++;
|
|
}
|
|
|
|
return _GLIBCXX20_ONLY( __removed );
|
|
}
|
|
|
|
template<typename _Pred>
|
|
__remove_return_type
|
|
remove_if(_Pred __pred)
|
|
{
|
|
if (!this->_M_iterators && !this->_M_const_iterators)
|
|
return _Base::remove_if(__pred);
|
|
|
|
size_type __removed __attribute__((__unused__)) = 0;
|
|
_Base __to_destroy(get_allocator());
|
|
_Base_iterator __x = _Base::before_begin();
|
|
_Base_iterator __old = __x++;
|
|
while (__x != _Base::end())
|
|
{
|
|
if (__pred(*__x))
|
|
{
|
|
this->_M_invalidate_if([__x](_Base_const_iterator __it)
|
|
{ return __it == __x; });
|
|
__to_destroy.splice_after(__to_destroy.cbefore_begin(),
|
|
*this, __old);
|
|
__x = __old;
|
|
_GLIBCXX20_ONLY( __removed++ );
|
|
}
|
|
|
|
__old = __x++;
|
|
}
|
|
|
|
return _GLIBCXX20_ONLY( __removed );
|
|
}
|
|
|
|
_GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG
|
|
__remove_return_type
|
|
unique()
|
|
{ return unique(std::equal_to<_Tp>()); }
|
|
|
|
template<typename _BinPred>
|
|
__remove_return_type
|
|
unique(_BinPred __binary_pred)
|
|
{
|
|
if (!this->_M_iterators && !this->_M_const_iterators)
|
|
return _Base::unique(__binary_pred);
|
|
|
|
_Base_const_iterator __first = _Base::cbegin();
|
|
_Base_const_iterator __last = _Base::cend();
|
|
if (__first == __last)
|
|
return _GLIBCXX20_ONLY(0);
|
|
|
|
size_type __removed __attribute__((__unused__)) = 0;
|
|
_Base __to_destroy(get_allocator());
|
|
_Base_const_iterator __next = std::next(__first);
|
|
while (__next != __last)
|
|
{
|
|
if (__binary_pred(*__first, *__next))
|
|
{
|
|
this->_M_invalidate_if([__next](_Base_const_iterator __it)
|
|
{ return __it == __next; });
|
|
__to_destroy.splice_after(__to_destroy.cbefore_begin(),
|
|
*this, __first);
|
|
__next = __first;
|
|
_GLIBCXX20_ONLY( __removed++ );
|
|
}
|
|
|
|
__first = __next++;
|
|
}
|
|
|
|
return _GLIBCXX20_ONLY( __removed );
|
|
}
|
|
|
|
#undef _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG
|
|
#undef _GLIBCXX20_ONLY
|
|
|
|
void
|
|
merge(forward_list&& __list)
|
|
{
|
|
if (this != std::__addressof(__list))
|
|
{
|
|
__glibcxx_check_sorted(_Base::begin(), _Base::end());
|
|
__glibcxx_check_sorted(__list._M_base().begin(),
|
|
__list._M_base().end());
|
|
this->_M_transfer_from_if(__list, [&__list](_Base_const_iterator __it)
|
|
{
|
|
return __it != __list._M_base().cbefore_begin()
|
|
&& __it != __list._M_base().cend();
|
|
});
|
|
_Base::merge(std::move(__list));
|
|
}
|
|
}
|
|
|
|
void
|
|
merge(forward_list& __list)
|
|
{ merge(std::move(__list)); }
|
|
|
|
template<typename _Comp>
|
|
void
|
|
merge(forward_list&& __list, _Comp __comp)
|
|
{
|
|
if (this != std::__addressof(__list))
|
|
{
|
|
__glibcxx_check_sorted_pred(_Base::begin(), _Base::end(), __comp);
|
|
__glibcxx_check_sorted_pred(__list._M_base().begin(),
|
|
__list._M_base().end(), __comp);
|
|
this->_M_transfer_from_if(__list,
|
|
[&__list](_Base_const_iterator __it)
|
|
{
|
|
return __it != __list._M_base().cbefore_begin()
|
|
&& __it != __list._M_base().cend();
|
|
});
|
|
_Base::merge(std::move(__list), __comp);
|
|
}
|
|
}
|
|
|
|
template<typename _Comp>
|
|
void
|
|
merge(forward_list& __list, _Comp __comp)
|
|
{ merge(std::move(__list), __comp); }
|
|
|
|
using _Base::sort;
|
|
using _Base::reverse;
|
|
|
|
_Base&
|
|
_M_base() noexcept { return *this; }
|
|
|
|
const _Base&
|
|
_M_base() const noexcept { return *this; }
|
|
};
|
|
|
|
#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>>
|
|
forward_list(_InputIterator, _InputIterator, _Allocator = _Allocator())
|
|
-> forward_list<_ValT, _Allocator>;
|
|
|
|
template<typename _Tp, typename _Allocator = allocator<_Tp>,
|
|
typename = _RequireAllocator<_Allocator>>
|
|
forward_list(size_t, _Tp, _Allocator = _Allocator())
|
|
-> forward_list<_Tp, _Allocator>;
|
|
#endif
|
|
|
|
template<typename _Tp, typename _Alloc>
|
|
bool
|
|
operator==(const forward_list<_Tp, _Alloc>& __lx,
|
|
const forward_list<_Tp, _Alloc>& __ly)
|
|
{ return __lx._M_base() == __ly._M_base(); }
|
|
|
|
#if __cpp_lib_three_way_comparison
|
|
template<typename _Tp, typename _Alloc>
|
|
constexpr __detail::__synth3way_t<_Tp>
|
|
operator<=>(const forward_list<_Tp, _Alloc>& __x,
|
|
const forward_list<_Tp, _Alloc>& __y)
|
|
{ return __x._M_base() <=> __y._M_base(); }
|
|
#else
|
|
template<typename _Tp, typename _Alloc>
|
|
inline bool
|
|
operator<(const forward_list<_Tp, _Alloc>& __lx,
|
|
const forward_list<_Tp, _Alloc>& __ly)
|
|
{ return __lx._M_base() < __ly._M_base(); }
|
|
|
|
template<typename _Tp, typename _Alloc>
|
|
inline bool
|
|
operator!=(const forward_list<_Tp, _Alloc>& __lx,
|
|
const forward_list<_Tp, _Alloc>& __ly)
|
|
{ return !(__lx == __ly); }
|
|
|
|
/// Based on operator<
|
|
template<typename _Tp, typename _Alloc>
|
|
inline bool
|
|
operator>(const forward_list<_Tp, _Alloc>& __lx,
|
|
const forward_list<_Tp, _Alloc>& __ly)
|
|
{ return (__ly < __lx); }
|
|
|
|
/// Based on operator<
|
|
template<typename _Tp, typename _Alloc>
|
|
inline bool
|
|
operator>=(const forward_list<_Tp, _Alloc>& __lx,
|
|
const forward_list<_Tp, _Alloc>& __ly)
|
|
{ return !(__lx < __ly); }
|
|
|
|
/// Based on operator<
|
|
template<typename _Tp, typename _Alloc>
|
|
inline bool
|
|
operator<=(const forward_list<_Tp, _Alloc>& __lx,
|
|
const forward_list<_Tp, _Alloc>& __ly)
|
|
{ return !(__ly < __lx); }
|
|
#endif // three-way comparison
|
|
|
|
/// See std::forward_list::swap().
|
|
template<typename _Tp, typename _Alloc>
|
|
inline void
|
|
swap(forward_list<_Tp, _Alloc>& __lx, forward_list<_Tp, _Alloc>& __ly)
|
|
noexcept(noexcept(__lx.swap(__ly)))
|
|
{ __lx.swap(__ly); }
|
|
|
|
} // namespace __debug
|
|
} // namespace std
|
|
|
|
namespace __gnu_debug
|
|
{
|
|
template<typename _Tp, typename _Alloc>
|
|
struct _BeforeBeginHelper<std::__debug::forward_list<_Tp, _Alloc> >
|
|
{
|
|
typedef std::__debug::forward_list<_Tp, _Alloc> _Sequence;
|
|
|
|
template<typename _Iterator>
|
|
static bool
|
|
_S_Is(const _Safe_iterator<_Iterator, _Sequence>& __it)
|
|
{
|
|
return
|
|
__it.base() == __it._M_get_sequence()->_M_base().before_begin();
|
|
}
|
|
|
|
template<typename _Iterator>
|
|
static bool
|
|
_S_Is_Beginnest(const _Safe_iterator<_Iterator, _Sequence>& __it)
|
|
{ return _S_Is(__it); }
|
|
};
|
|
|
|
template<typename _Tp, typename _Alloc>
|
|
struct _Sequence_traits<std::__debug::forward_list<_Tp, _Alloc> >
|
|
{
|
|
typedef typename std::__debug::forward_list<_Tp, _Alloc>::iterator _It;
|
|
|
|
static typename _Distance_traits<_It>::__type
|
|
_S_size(const std::__debug::forward_list<_Tp, _Alloc>& __seq)
|
|
{
|
|
return __seq.empty()
|
|
? std::make_pair(0, __dp_exact) : std::make_pair(1, __dp_sign);
|
|
}
|
|
};
|
|
|
|
#ifndef _GLIBCXX_DEBUG_PEDANTIC
|
|
template<class _Tp, class _Alloc>
|
|
struct _Insert_range_from_self_is_safe<
|
|
std::__debug::forward_list<_Tp, _Alloc> >
|
|
{ enum { __value = 1 }; };
|
|
#endif
|
|
}
|
|
|
|
#endif
|