723 lines
18 KiB
C++
723 lines
18 KiB
C++
// Debugging deque implementation -*- C++ -*-
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// Copyright (C) 2003-2022 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/deque
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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_DEQUE
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#define _GLIBCXX_DEBUG_DEQUE 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 deque;
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} } // namespace std::__debug
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#include <deque>
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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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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::deque with safety/checking/debug instrumentation.
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template<typename _Tp, typename _Allocator = std::allocator<_Tp> >
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class deque
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: public __gnu_debug::_Safe_container<
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deque<_Tp, _Allocator>, _Allocator,
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__gnu_debug::_Safe_sequence>,
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public _GLIBCXX_STD_C::deque<_Tp, _Allocator>
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{
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typedef _GLIBCXX_STD_C::deque<_Tp, _Allocator> _Base;
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typedef __gnu_debug::_Safe_container<
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deque, _Allocator, __gnu_debug::_Safe_sequence> _Safe;
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typedef typename _Base::const_iterator _Base_const_iterator;
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typedef typename _Base::iterator _Base_iterator;
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typedef __gnu_debug::_Equal_to<_Base_const_iterator> _Equal;
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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. Disambiguates deque(const _Base&)
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// from copy constructor by requiring a user-defined conversion.
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// 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<_Base_iterator, deque>
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iterator;
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typedef __gnu_debug::_Safe_iterator<_Base_const_iterator, deque>
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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 _Allocator 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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typedef std::reverse_iterator<iterator> reverse_iterator;
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typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
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// 23.2.1.1 construct/copy/destroy:
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#if __cplusplus < 201103L
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deque()
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: _Base() { }
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deque(const deque& __x)
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: _Base(__x) { }
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~deque() { }
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#else
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deque() = default;
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deque(const deque&) = default;
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deque(deque&&) = default;
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deque(const deque& __d, const __type_identity_t<_Allocator>& __a)
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: _Base(__d, __a) { }
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deque(deque&& __d, const __type_identity_t<_Allocator>& __a)
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: _Safe(std::move(__d)), _Base(std::move(__d), __a) { }
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deque(initializer_list<value_type> __l,
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const allocator_type& __a = allocator_type())
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: _Base(__l, __a) { }
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~deque() = default;
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#endif
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explicit
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deque(const _Allocator& __a)
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: _Base(__a) { }
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#if __cplusplus >= 201103L
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explicit
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deque(size_type __n, const _Allocator& __a = _Allocator())
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: _Base(__n, __a) { }
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deque(size_type __n, const __type_identity_t<_Tp>& __value,
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const _Allocator& __a = _Allocator())
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: _Base(__n, __value, __a) { }
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#else
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explicit
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deque(size_type __n, const _Tp& __value = _Tp(),
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const _Allocator& __a = _Allocator())
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: _Base(__n, __value, __a) { }
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#endif
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#if __cplusplus >= 201103L
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template<class _InputIterator,
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typename = std::_RequireInputIter<_InputIterator>>
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#else
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template<class _InputIterator>
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#endif
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deque(_InputIterator __first, _InputIterator __last,
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const _Allocator& __a = _Allocator())
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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), __a)
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{ }
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deque(_Base_ref __x)
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: _Base(__x._M_ref) { }
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#if __cplusplus >= 201103L
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deque&
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operator=(const deque&) = default;
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deque&
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operator=(deque&&) = default;
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deque&
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operator=(initializer_list<value_type> __l)
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{
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_Base::operator=(__l);
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this->_M_invalidate_all();
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return *this;
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}
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#endif
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#if __cplusplus >= 201103L
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template<class _InputIterator,
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typename = std::_RequireInputIter<_InputIterator>>
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#else
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template<class _InputIterator>
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#endif
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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& __t)
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{
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_Base::assign(__n, __t);
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this->_M_invalidate_all();
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}
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#if __cplusplus >= 201103L
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void
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assign(initializer_list<value_type> __l)
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{
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_Base::assign(__l);
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this->_M_invalidate_all();
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}
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#endif
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using _Base::get_allocator;
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// iterators:
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_GLIBCXX_NODISCARD
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iterator
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begin() _GLIBCXX_NOEXCEPT
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{ return iterator(_Base::begin(), this); }
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_GLIBCXX_NODISCARD
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const_iterator
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begin() const _GLIBCXX_NOEXCEPT
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{ return const_iterator(_Base::begin(), this); }
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_GLIBCXX_NODISCARD
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iterator
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end() _GLIBCXX_NOEXCEPT
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{ return iterator(_Base::end(), this); }
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_GLIBCXX_NODISCARD
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const_iterator
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end() const _GLIBCXX_NOEXCEPT
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{ return const_iterator(_Base::end(), this); }
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_GLIBCXX_NODISCARD
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reverse_iterator
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rbegin() _GLIBCXX_NOEXCEPT
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{ return reverse_iterator(end()); }
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_GLIBCXX_NODISCARD
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const_reverse_iterator
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rbegin() const _GLIBCXX_NOEXCEPT
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{ return const_reverse_iterator(end()); }
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_GLIBCXX_NODISCARD
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reverse_iterator
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rend() _GLIBCXX_NOEXCEPT
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{ return reverse_iterator(begin()); }
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_GLIBCXX_NODISCARD
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const_reverse_iterator
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rend() const _GLIBCXX_NOEXCEPT
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{ return const_reverse_iterator(begin()); }
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#if __cplusplus >= 201103L
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[[__nodiscard__]]
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const_iterator
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cbegin() const noexcept
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{ return const_iterator(_Base::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 const_iterator(_Base::end(), this); }
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[[__nodiscard__]]
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const_reverse_iterator
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crbegin() const noexcept
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{ return const_reverse_iterator(end()); }
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[[__nodiscard__]]
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const_reverse_iterator
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crend() const noexcept
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{ return const_reverse_iterator(begin()); }
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#endif
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private:
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void
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_M_invalidate_after_nth(difference_type __n)
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{
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typedef __gnu_debug::_After_nth_from<_Base_const_iterator> _After_nth;
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this->_M_invalidate_if(_After_nth(__n, _Base::begin()));
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}
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public:
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// 23.2.1.2 capacity:
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using _Base::size;
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using _Base::max_size;
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#if __cplusplus >= 201103L
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void
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resize(size_type __sz)
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{
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bool __invalidate_all = __sz > this->size();
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if (__sz < this->size())
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this->_M_invalidate_after_nth(__sz);
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_Base::resize(__sz);
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if (__invalidate_all)
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this->_M_invalidate_all();
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}
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void
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resize(size_type __sz, const _Tp& __c)
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{
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bool __invalidate_all = __sz > this->size();
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if (__sz < this->size())
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this->_M_invalidate_after_nth(__sz);
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_Base::resize(__sz, __c);
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if (__invalidate_all)
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this->_M_invalidate_all();
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}
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#else
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void
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resize(size_type __sz, _Tp __c = _Tp())
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{
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bool __invalidate_all = __sz > this->size();
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if (__sz < this->size())
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this->_M_invalidate_after_nth(__sz);
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_Base::resize(__sz, __c);
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if (__invalidate_all)
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this->_M_invalidate_all();
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}
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#endif
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#if __cplusplus >= 201103L
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void
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shrink_to_fit() noexcept
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{
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if (_Base::_M_shrink_to_fit())
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this->_M_invalidate_all();
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}
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#endif
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using _Base::empty;
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// element access:
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_GLIBCXX_NODISCARD
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reference
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operator[](size_type __n) _GLIBCXX_NOEXCEPT
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{
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__glibcxx_check_subscript(__n);
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return _Base::operator[](__n);
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}
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_GLIBCXX_NODISCARD
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const_reference
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operator[](size_type __n) const _GLIBCXX_NOEXCEPT
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{
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__glibcxx_check_subscript(__n);
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return _Base::operator[](__n);
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}
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using _Base::at;
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_GLIBCXX_NODISCARD
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reference
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front() _GLIBCXX_NOEXCEPT
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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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_GLIBCXX_NODISCARD
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const_reference
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front() const _GLIBCXX_NOEXCEPT
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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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_GLIBCXX_NODISCARD
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reference
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back() _GLIBCXX_NOEXCEPT
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{
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__glibcxx_check_nonempty();
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return _Base::back();
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}
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_GLIBCXX_NODISCARD
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const_reference
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back() const _GLIBCXX_NOEXCEPT
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{
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__glibcxx_check_nonempty();
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return _Base::back();
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}
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// 23.2.1.3 modifiers:
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void
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push_front(const _Tp& __x)
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{
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_Base::push_front(__x);
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this->_M_invalidate_all();
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}
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void
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push_back(const _Tp& __x)
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{
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_Base::push_back(__x);
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this->_M_invalidate_all();
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}
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#if __cplusplus >= 201103L
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void
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push_front(_Tp&& __x)
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{ emplace_front(std::move(__x)); }
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void
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push_back(_Tp&& __x)
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{ emplace_back(std::move(__x)); }
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template<typename... _Args>
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#if __cplusplus > 201402L
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reference
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#else
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void
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#endif
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emplace_front(_Args&&... __args)
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{
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_Base::emplace_front(std::forward<_Args>(__args)...);
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this->_M_invalidate_all();
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#if __cplusplus > 201402L
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return front();
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#endif
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}
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template<typename... _Args>
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#if __cplusplus > 201402L
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reference
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#else
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void
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#endif
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emplace_back(_Args&&... __args)
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{
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_Base::emplace_back(std::forward<_Args>(__args)...);
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this->_M_invalidate_all();
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#if __cplusplus > 201402L
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return back();
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#endif
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}
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template<typename... _Args>
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iterator
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emplace(const_iterator __position, _Args&&... __args)
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{
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__glibcxx_check_insert(__position);
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_Base_iterator __res = _Base::emplace(__position.base(),
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std::forward<_Args>(__args)...);
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this->_M_invalidate_all();
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return iterator(__res, this);
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}
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#endif
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iterator
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#if __cplusplus >= 201103L
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insert(const_iterator __position, const _Tp& __x)
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#else
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insert(iterator __position, const _Tp& __x)
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#endif
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{
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__glibcxx_check_insert(__position);
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_Base_iterator __res = _Base::insert(__position.base(), __x);
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this->_M_invalidate_all();
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return iterator(__res, this);
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}
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#if __cplusplus >= 201103L
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iterator
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insert(const_iterator __position, _Tp&& __x)
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{ return emplace(__position, std::move(__x)); }
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iterator
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insert(const_iterator __position, initializer_list<value_type> __l)
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{
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__glibcxx_check_insert(__position);
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_Base_iterator __res = _Base::insert(__position.base(), __l);
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this->_M_invalidate_all();
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return iterator(__res, this);
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}
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#endif
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#if __cplusplus >= 201103L
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iterator
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insert(const_iterator __position, size_type __n, const _Tp& __x)
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{
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__glibcxx_check_insert(__position);
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_Base_iterator __res = _Base::insert(__position.base(), __n, __x);
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this->_M_invalidate_all();
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return iterator(__res, this);
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}
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#else
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void
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insert(iterator __position, size_type __n, const _Tp& __x)
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{
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__glibcxx_check_insert(__position);
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_Base::insert(__position.base(), __n, __x);
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this->_M_invalidate_all();
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}
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#endif
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|
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#if __cplusplus >= 201103L
|
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template<class _InputIterator,
|
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typename = std::_RequireInputIter<_InputIterator>>
|
|
iterator
|
|
insert(const_iterator __position,
|
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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(__position, __first, __last, __dist);
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_Base_iterator __res;
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if (__dist.second >= __gnu_debug::__dp_sign)
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__res = _Base::insert(__position.base(),
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__gnu_debug::__unsafe(__first),
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__gnu_debug::__unsafe(__last));
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else
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__res = _Base::insert(__position.base(), __first, __last);
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this->_M_invalidate_all();
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return iterator(__res, this);
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}
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#else
|
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template<class _InputIterator>
|
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void
|
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insert(iterator __position,
|
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_InputIterator __first, _InputIterator __last)
|
|
{
|
|
typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
|
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__glibcxx_check_insert_range(__position, __first, __last, __dist);
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|
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if (__dist.second >= __gnu_debug::__dp_sign)
|
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_Base::insert(__position.base(),
|
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__gnu_debug::__unsafe(__first),
|
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__gnu_debug::__unsafe(__last));
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else
|
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_Base::insert(__position.base(), __first, __last);
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|
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this->_M_invalidate_all();
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}
|
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#endif
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void
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pop_front() _GLIBCXX_NOEXCEPT
|
|
{
|
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__glibcxx_check_nonempty();
|
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this->_M_invalidate_if(_Equal(_Base::begin()));
|
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_Base::pop_front();
|
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}
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|
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void
|
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pop_back() _GLIBCXX_NOEXCEPT
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|
{
|
|
__glibcxx_check_nonempty();
|
|
this->_M_invalidate_if(_Equal(--_Base::end()));
|
|
_Base::pop_back();
|
|
}
|
|
|
|
iterator
|
|
#if __cplusplus >= 201103L
|
|
erase(const_iterator __position)
|
|
#else
|
|
erase(iterator __position)
|
|
#endif
|
|
{
|
|
__glibcxx_check_erase(__position);
|
|
#if __cplusplus >= 201103L
|
|
_Base_const_iterator __victim = __position.base();
|
|
#else
|
|
_Base_iterator __victim = __position.base();
|
|
#endif
|
|
if (__victim == _Base::begin() || __victim == _Base::end() - 1)
|
|
{
|
|
this->_M_invalidate_if(_Equal(__victim));
|
|
return iterator(_Base::erase(__victim), this);
|
|
}
|
|
else
|
|
{
|
|
_Base_iterator __res = _Base::erase(__victim);
|
|
this->_M_invalidate_all();
|
|
return iterator(__res, this);
|
|
}
|
|
}
|
|
|
|
iterator
|
|
#if __cplusplus >= 201103L
|
|
erase(const_iterator __first, const_iterator __last)
|
|
#else
|
|
erase(iterator __first, iterator __last)
|
|
#endif
|
|
{
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
// 151. can't currently clear() empty container
|
|
__glibcxx_check_erase_range(__first, __last);
|
|
|
|
if (__first.base() == __last.base())
|
|
#if __cplusplus >= 201103L
|
|
return iterator(__first.base()._M_const_cast(), this);
|
|
#else
|
|
return __first;
|
|
#endif
|
|
else if (__first.base() == _Base::begin()
|
|
|| __last.base() == _Base::end())
|
|
{
|
|
this->_M_detach_singular();
|
|
for (_Base_const_iterator __position = __first.base();
|
|
__position != __last.base(); ++__position)
|
|
{
|
|
this->_M_invalidate_if(_Equal(__position));
|
|
}
|
|
__try
|
|
{
|
|
return iterator(_Base::erase(__first.base(), __last.base()),
|
|
this);
|
|
}
|
|
__catch(...)
|
|
{
|
|
this->_M_revalidate_singular();
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
_Base_iterator __res = _Base::erase(__first.base(),
|
|
__last.base());
|
|
this->_M_invalidate_all();
|
|
return iterator(__res, this);
|
|
}
|
|
}
|
|
|
|
void
|
|
swap(deque& __x)
|
|
_GLIBCXX_NOEXCEPT_IF( noexcept(declval<_Base&>().swap(__x)) )
|
|
{
|
|
_Safe::_M_swap(__x);
|
|
_Base::swap(__x);
|
|
}
|
|
|
|
void
|
|
clear() _GLIBCXX_NOEXCEPT
|
|
{
|
|
_Base::clear();
|
|
this->_M_invalidate_all();
|
|
}
|
|
|
|
_Base&
|
|
_M_base() _GLIBCXX_NOEXCEPT { return *this; }
|
|
|
|
const _Base&
|
|
_M_base() const _GLIBCXX_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>>
|
|
deque(_InputIterator, _InputIterator, _Allocator = _Allocator())
|
|
-> deque<_ValT, _Allocator>;
|
|
|
|
template<typename _Tp, typename _Allocator = allocator<_Tp>,
|
|
typename = _RequireAllocator<_Allocator>>
|
|
deque(size_t, _Tp, _Allocator = _Allocator())
|
|
-> deque<_Tp, _Allocator>;
|
|
#endif
|
|
|
|
template<typename _Tp, typename _Alloc>
|
|
inline bool
|
|
operator==(const deque<_Tp, _Alloc>& __lhs,
|
|
const deque<_Tp, _Alloc>& __rhs)
|
|
{ return __lhs._M_base() == __rhs._M_base(); }
|
|
|
|
#if __cpp_lib_three_way_comparison
|
|
template<typename _Tp, typename _Alloc>
|
|
constexpr __detail::__synth3way_t<_Tp>
|
|
operator<=>(const deque<_Tp, _Alloc>& __x, const deque<_Tp, _Alloc>& __y)
|
|
{ return __x._M_base() <=> __y._M_base(); }
|
|
#else
|
|
template<typename _Tp, typename _Alloc>
|
|
inline bool
|
|
operator!=(const deque<_Tp, _Alloc>& __lhs,
|
|
const deque<_Tp, _Alloc>& __rhs)
|
|
{ return __lhs._M_base() != __rhs._M_base(); }
|
|
|
|
template<typename _Tp, typename _Alloc>
|
|
inline bool
|
|
operator<(const deque<_Tp, _Alloc>& __lhs,
|
|
const deque<_Tp, _Alloc>& __rhs)
|
|
{ return __lhs._M_base() < __rhs._M_base(); }
|
|
|
|
template<typename _Tp, typename _Alloc>
|
|
inline bool
|
|
operator<=(const deque<_Tp, _Alloc>& __lhs,
|
|
const deque<_Tp, _Alloc>& __rhs)
|
|
{ return __lhs._M_base() <= __rhs._M_base(); }
|
|
|
|
template<typename _Tp, typename _Alloc>
|
|
inline bool
|
|
operator>=(const deque<_Tp, _Alloc>& __lhs,
|
|
const deque<_Tp, _Alloc>& __rhs)
|
|
{ return __lhs._M_base() >= __rhs._M_base(); }
|
|
|
|
template<typename _Tp, typename _Alloc>
|
|
inline bool
|
|
operator>(const deque<_Tp, _Alloc>& __lhs,
|
|
const deque<_Tp, _Alloc>& __rhs)
|
|
{ return __lhs._M_base() > __rhs._M_base(); }
|
|
#endif // three-way comparison
|
|
|
|
template<typename _Tp, typename _Alloc>
|
|
inline void
|
|
swap(deque<_Tp, _Alloc>& __lhs, deque<_Tp, _Alloc>& __rhs)
|
|
_GLIBCXX_NOEXCEPT_IF(noexcept(__lhs.swap(__rhs)))
|
|
{ __lhs.swap(__rhs); }
|
|
|
|
} // namespace __debug
|
|
} // namespace std
|
|
|
|
#endif
|