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Editing: deque.tcc
// Deque implementation (out of line) -*- C++ -*- // Copyright (C) 2001-2018 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. /* * * Copyright (c) 1994 * Hewlett-Packard Company * * Permission to use, copy, modify, distribute and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appear in all copies and * that both that copyright notice and this permission notice appear * in supporting documentation. Hewlett-Packard Company makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. * * * Copyright (c) 1997 * Silicon Graphics Computer Systems, Inc. * * Permission to use, copy, modify, distribute and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appear in all copies and * that both that copyright notice and this permission notice appear * in supporting documentation. Silicon Graphics makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. */ /** @file bits/deque.tcc * This is an internal header file, included by other library headers. * Do not attempt to use it directly. @headername{deque} */ #ifndef _DEQUE_TCC #define _DEQUE_TCC 1 namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION _GLIBCXX_BEGIN_NAMESPACE_CONTAINER #if __cplusplus >= 201103L template <typename _Tp, typename _Alloc> void deque<_Tp, _Alloc>:: _M_default_initialize() { _Map_pointer __cur; __try { for (__cur = this->_M_impl._M_start._M_node; __cur < this->_M_impl._M_finish._M_node; ++__cur) std::__uninitialized_default_a(*__cur, *__cur + _S_buffer_size(), _M_get_Tp_allocator()); std::__uninitialized_default_a(this->_M_impl._M_finish._M_first, this->_M_impl._M_finish._M_cur, _M_get_Tp_allocator()); } __catch(...) { std::_Destroy(this->_M_impl._M_start, iterator(*__cur, __cur), _M_get_Tp_allocator()); __throw_exception_again; } } #endif template <typename _Tp, typename _Alloc> deque<_Tp, _Alloc>& deque<_Tp, _Alloc>:: operator=(const deque& __x) { if (&__x != this) { #if __cplusplus >= 201103L if (_Alloc_traits::_S_propagate_on_copy_assign()) { if (!_Alloc_traits::_S_always_equal() && _M_get_Tp_allocator() != __x._M_get_Tp_allocator()) { // Replacement allocator cannot free existing storage, // so deallocate everything and take copy of __x's data. _M_replace_map(__x, __x.get_allocator()); std::__alloc_on_copy(_M_get_Tp_allocator(), __x._M_get_Tp_allocator()); return *this; } std::__alloc_on_copy(_M_get_Tp_allocator(), __x._M_get_Tp_allocator()); } #endif const size_type __len = size(); if (__len >= __x.size()) _M_erase_at_end(std::copy(__x.begin(), __x.end(), this->_M_impl._M_start)); else { const_iterator __mid = __x.begin() + difference_type(__len); std::copy(__x.begin(), __mid, this->_M_impl._M_start); _M_range_insert_aux(this->_M_impl._M_finish, __mid, __x.end(), std::random_access_iterator_tag()); } } return *this; } #if __cplusplus >= 201103L template<typename _Tp, typename _Alloc> template<typename... _Args> #if __cplusplus > 201402L typename deque<_Tp, _Alloc>::reference #else void #endif deque<_Tp, _Alloc>:: emplace_front(_Args&&... __args) { if (this->_M_impl._M_start._M_cur != this->_M_impl._M_start._M_first) { _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_start._M_cur - 1, std::forward<_Args>(__args)...); --this->_M_impl._M_start._M_cur; } else _M_push_front_aux(std::forward<_Args>(__args)...); #if __cplusplus > 201402L return front(); #endif } template<typename _Tp, typename _Alloc> template<typename... _Args> #if __cplusplus > 201402L typename deque<_Tp, _Alloc>::reference #else void #endif deque<_Tp, _Alloc>:: emplace_back(_Args&&... __args) { if (this->_M_impl._M_finish._M_cur != this->_M_impl._M_finish._M_last - 1) { _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish._M_cur, std::forward<_Args>(__args)...); ++this->_M_impl._M_finish._M_cur; } else _M_push_back_aux(std::forward<_Args>(__args)...); #if __cplusplus > 201402L return back(); #endif } #endif #if __cplusplus >= 201103L template<typename _Tp, typename _Alloc> template<typename... _Args> typename deque<_Tp, _Alloc>::iterator deque<_Tp, _Alloc>:: emplace(const_iterator __position, _Args&&... __args) { if (__position._M_cur == this->_M_impl._M_start._M_cur) { emplace_front(std::forward<_Args>(__args)...); return this->_M_impl._M_start; } else if (__position._M_cur == this->_M_impl._M_finish._M_cur) { emplace_back(std::forward<_Args>(__args)...); iterator __tmp = this->_M_impl._M_finish; --__tmp; return __tmp; } else return _M_insert_aux(__position._M_const_cast(), std::forward<_Args>(__args)...); } #endif template <typename _Tp, typename _Alloc> typename deque<_Tp, _Alloc>::iterator deque<_Tp, _Alloc>:: #if __cplusplus >= 201103L insert(const_iterator __position, const value_type& __x) #else insert(iterator __position, const value_type& __x) #endif { if (__position._M_cur == this->_M_impl._M_start._M_cur) { push_front(__x); return this->_M_impl._M_start; } else if (__position._M_cur == this->_M_impl._M_finish._M_cur) { push_back(__x); iterator __tmp = this->_M_impl._M_finish; --__tmp; return __tmp; } else return _M_insert_aux(__position._M_const_cast(), __x); } template <typename _Tp, typename _Alloc> typename deque<_Tp, _Alloc>::iterator deque<_Tp, _Alloc>:: _M_erase(iterator __position) { iterator __next = __position; ++__next; const difference_type __index = __position - begin(); if (static_cast<size_type>(__index) < (size() >> 1)) { if (__position != begin()) _GLIBCXX_MOVE_BACKWARD3(begin(), __position, __next); pop_front(); } else { if (__next != end()) _GLIBCXX_MOVE3(__next, end(), __position); pop_back(); } return begin() + __index; } template <typename _Tp, typename _Alloc> typename deque<_Tp, _Alloc>::iterator deque<_Tp, _Alloc>:: _M_erase(iterator __first, iterator __last) { if (__first == __last) return __first; else if (__first == begin() && __last == end()) { clear(); return end(); } else { const difference_type __n = __last - __first; const difference_type __elems_before = __first - begin(); if (static_cast<size_type>(__elems_before) <= (size() - __n) / 2) { if (__first != begin()) _GLIBCXX_MOVE_BACKWARD3(begin(), __first, __last); _M_erase_at_begin(begin() + __n); } else { if (__last != end()) _GLIBCXX_MOVE3(__last, end(), __first); _M_erase_at_end(end() - __n); } return begin() + __elems_before; } } template <typename _Tp, class _Alloc> template <typename _InputIterator> void deque<_Tp, _Alloc>:: _M_assign_aux(_InputIterator __first, _InputIterator __last, std::input_iterator_tag) { iterator __cur = begin(); for (; __first != __last && __cur != end(); ++__cur, ++__first) *__cur = *__first; if (__first == __last) _M_erase_at_end(__cur); else _M_range_insert_aux(end(), __first, __last, std::__iterator_category(__first)); } template <typename _Tp, typename _Alloc> void deque<_Tp, _Alloc>:: _M_fill_insert(iterator __pos, size_type __n, const value_type& __x) { if (__pos._M_cur == this->_M_impl._M_start._M_cur) { iterator __new_start = _M_reserve_elements_at_front(__n); __try { std::__uninitialized_fill_a(__new_start, this->_M_impl._M_start, __x, _M_get_Tp_allocator()); this->_M_impl._M_start = __new_start; } __catch(...) { _M_destroy_nodes(__new_start._M_node, this->_M_impl._M_start._M_node); __throw_exception_again; } } else if (__pos._M_cur == this->_M_impl._M_finish._M_cur) { iterator __new_finish = _M_reserve_elements_at_back(__n); __try { std::__uninitialized_fill_a(this->_M_impl._M_finish, __new_finish, __x, _M_get_Tp_allocator()); this->_M_impl._M_finish = __new_finish; } __catch(...) { _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1, __new_finish._M_node + 1); __throw_exception_again; } } else _M_insert_aux(__pos, __n, __x); } #if __cplusplus >= 201103L template <typename _Tp, typename _Alloc> void deque<_Tp, _Alloc>:: _M_default_append(size_type __n) { if (__n) { iterator __new_finish = _M_reserve_elements_at_back(__n); __try { std::__uninitialized_default_a(this->_M_impl._M_finish, __new_finish, _M_get_Tp_allocator()); this->_M_impl._M_finish = __new_finish; } __catch(...) { _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1, __new_finish._M_node + 1); __throw_exception_again; } } } template <typename _Tp, typename _Alloc> bool deque<_Tp, _Alloc>:: _M_shrink_to_fit() { const difference_type __front_capacity = (this->_M_impl._M_start._M_cur - this->_M_impl._M_start._M_first); if (__front_capacity == 0) return false; const difference_type __back_capacity = (this->_M_impl._M_finish._M_last - this->_M_impl._M_finish._M_cur); if (__front_capacity + __back_capacity < _S_buffer_size()) return false; return std::__shrink_to_fit_aux<deque>::_S_do_it(*this); } #endif template <typename _Tp, typename _Alloc> void deque<_Tp, _Alloc>:: _M_fill_initialize(const value_type& __value) { _Map_pointer __cur; __try { for (__cur = this->_M_impl._M_start._M_node; __cur < this->_M_impl._M_finish._M_node; ++__cur) std::__uninitialized_fill_a(*__cur, *__cur + _S_buffer_size(), __value, _M_get_Tp_allocator()); std::__uninitialized_fill_a(this->_M_impl._M_finish._M_first, this->_M_impl._M_finish._M_cur, __value, _M_get_Tp_allocator()); } __catch(...) { std::_Destroy(this->_M_impl._M_start, iterator(*__cur, __cur), _M_get_Tp_allocator()); __throw_exception_again; } } template <typename _Tp, typename _Alloc> template <typename _InputIterator> void deque<_Tp, _Alloc>:: _M_range_initialize(_InputIterator __first, _InputIterator __last, std::input_iterator_tag) { this->_M_initialize_map(0); __try { for (; __first != __last; ++__first) #if __cplusplus >= 201103L emplace_back(*__first); #else push_back(*__first); #endif } __catch(...) { clear(); __throw_exception_again; } } template <typename _Tp, typename _Alloc> template <typename _ForwardIterator> void deque<_Tp, _Alloc>:: _M_range_initialize(_ForwardIterator __first, _ForwardIterator __last, std::forward_iterator_tag) { const size_type __n = std::distance(__first, __last); this->_M_initialize_map(__n); _Map_pointer __cur_node; __try { for (__cur_node = this->_M_impl._M_start._M_node; __cur_node < this->_M_impl._M_finish._M_node; ++__cur_node) { _ForwardIterator __mid = __first; std::advance(__mid, _S_buffer_size()); std::__uninitialized_copy_a(__first, __mid, *__cur_node, _M_get_Tp_allocator()); __first = __mid; } std::__uninitialized_copy_a(__first, __last, this->_M_impl._M_finish._M_first, _M_get_Tp_allocator()); } __catch(...) { std::_Destroy(this->_M_impl._M_start, iterator(*__cur_node, __cur_node), _M_get_Tp_allocator()); __throw_exception_again; } } // Called only if _M_impl._M_finish._M_cur == _M_impl._M_finish._M_last - 1. template<typename _Tp, typename _Alloc> #if __cplusplus >= 201103L template<typename... _Args> void deque<_Tp, _Alloc>:: _M_push_back_aux(_Args&&... __args) #else void deque<_Tp, _Alloc>:: _M_push_back_aux(const value_type& __t) #endif { _M_reserve_map_at_back(); *(this->_M_impl._M_finish._M_node + 1) = this->_M_allocate_node(); __try { #if __cplusplus >= 201103L _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish._M_cur, std::forward<_Args>(__args)...); #else this->_M_impl.construct(this->_M_impl._M_finish._M_cur, __t); #endif this->_M_impl._M_finish._M_set_node(this->_M_impl._M_finish._M_node + 1); this->_M_impl._M_finish._M_cur = this->_M_impl._M_finish._M_first; } __catch(...) { _M_deallocate_node(*(this->_M_impl._M_finish._M_node + 1)); __throw_exception_again; } } // Called only if _M_impl._M_start._M_cur == _M_impl._M_start._M_first. template<typename _Tp, typename _Alloc> #if __cplusplus >= 201103L template<typename... _Args> void deque<_Tp, _Alloc>:: _M_push_front_aux(_Args&&... __args) #else void deque<_Tp, _Alloc>:: _M_push_front_aux(const value_type& __t) #endif { _M_reserve_map_at_front(); *(this->_M_impl._M_start._M_node - 1) = this->_M_allocate_node(); __try { this->_M_impl._M_start._M_set_node(this->_M_impl._M_start._M_node - 1); this->_M_impl._M_start._M_cur = this->_M_impl._M_start._M_last - 1; #if __cplusplus >= 201103L _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_start._M_cur, std::forward<_Args>(__args)...); #else this->_M_impl.construct(this->_M_impl._M_start._M_cur, __t); #endif } __catch(...) { ++this->_M_impl._M_start; _M_deallocate_node(*(this->_M_impl._M_start._M_node - 1)); __throw_exception_again; } } // Called only if _M_impl._M_finish._M_cur == _M_impl._M_finish._M_first. template <typename _Tp, typename _Alloc> void deque<_Tp, _Alloc>:: _M_pop_back_aux() { _M_deallocate_node(this->_M_impl._M_finish._M_first); this->_M_impl._M_finish._M_set_node(this->_M_impl._M_finish._M_node - 1); this->_M_impl._M_finish._M_cur = this->_M_impl._M_finish._M_last - 1; _Alloc_traits::destroy(_M_get_Tp_allocator(), this->_M_impl._M_finish._M_cur); } // Called only if _M_impl._M_start._M_cur == _M_impl._M_start._M_last - 1. // Note that if the deque has at least one element (a precondition for this // member function), and if // _M_impl._M_start._M_cur == _M_impl._M_start._M_last, // then the deque must have at least two nodes. template <typename _Tp, typename _Alloc> void deque<_Tp, _Alloc>:: _M_pop_front_aux() { _Alloc_traits::destroy(_M_get_Tp_allocator(), this->_M_impl._M_start._M_cur); _M_deallocate_node(this->_M_impl._M_start._M_first); this->_M_impl._M_start._M_set_node(this->_M_impl._M_start._M_node + 1); this->_M_impl._M_start._M_cur = this->_M_impl._M_start._M_first; } template <typename _Tp, typename _Alloc> template <typename _InputIterator> void deque<_Tp, _Alloc>:: _M_range_insert_aux(iterator __pos, _InputIterator __first, _InputIterator __last, std::input_iterator_tag) { std::copy(__first, __last, std::inserter(*this, __pos)); } template <typename _Tp, typename _Alloc> template <typename _ForwardIterator> void deque<_Tp, _Alloc>:: _M_range_insert_aux(iterator __pos, _ForwardIterator __first, _ForwardIterator __last, std::forward_iterator_tag) { const size_type __n = std::distance(__first, __last); if (__pos._M_cur == this->_M_impl._M_start._M_cur) { iterator __new_start = _M_reserve_elements_at_front(__n); __try { std::__uninitialized_copy_a(__first, __last, __new_start, _M_get_Tp_allocator()); this->_M_impl._M_start = __new_start; } __catch(...) { _M_destroy_nodes(__new_start._M_node, this->_M_impl._M_start._M_node); __throw_exception_again; } } else if (__pos._M_cur == this->_M_impl._M_finish._M_cur) { iterator __new_finish = _M_reserve_elements_at_back(__n); __try { std::__uninitialized_copy_a(__first, __last, this->_M_impl._M_finish, _M_get_Tp_allocator()); this->_M_impl._M_finish = __new_finish; } __catch(...) { _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1, __new_finish._M_node + 1); __throw_exception_again; } } else _M_insert_aux(__pos, __first, __last, __n); } template<typename _Tp, typename _Alloc> #if __cplusplus >= 201103L template<typename... _Args> typename deque<_Tp, _Alloc>::iterator deque<_Tp, _Alloc>:: _M_insert_aux(iterator __pos, _Args&&... __args) { value_type __x_copy(std::forward<_Args>(__args)...); // XXX copy #else typename deque<_Tp, _Alloc>::iterator deque<_Tp, _Alloc>:: _M_insert_aux(iterator __pos, const value_type& __x) { value_type __x_copy = __x; // XXX copy #endif difference_type __index = __pos - this->_M_impl._M_start; if (static_cast<size_type>(__index) < size() / 2) { push_front(_GLIBCXX_MOVE(front())); iterator __front1 = this->_M_impl._M_start; ++__front1; iterator __front2 = __front1; ++__front2; __pos = this->_M_impl._M_start + __index; iterator __pos1 = __pos; ++__pos1; _GLIBCXX_MOVE3(__front2, __pos1, __front1); } else { push_back(_GLIBCXX_MOVE(back())); iterator __back1 = this->_M_impl._M_finish; --__back1; iterator __back2 = __back1; --__back2; __pos = this->_M_impl._M_start + __index; _GLIBCXX_MOVE_BACKWARD3(__pos, __back2, __back1); } *__pos = _GLIBCXX_MOVE(__x_copy); return __pos; } template <typename _Tp, typename _Alloc> void deque<_Tp, _Alloc>:: _M_insert_aux(iterator __pos, size_type __n, const value_type& __x) { const difference_type __elems_before = __pos - this->_M_impl._M_start; const size_type __length = this->size(); value_type __x_copy = __x; if (__elems_before < difference_type(__length / 2)) { iterator __new_start = _M_reserve_elements_at_front(__n); iterator __old_start = this->_M_impl._M_start; __pos = this->_M_impl._M_start + __elems_before; __try { if (__elems_before >= difference_type(__n)) { iterator __start_n = (this->_M_impl._M_start + difference_type(__n)); std::__uninitialized_move_a(this->_M_impl._M_start, __start_n, __new_start, _M_get_Tp_allocator()); this->_M_impl._M_start = __new_start; _GLIBCXX_MOVE3(__start_n, __pos, __old_start); std::fill(__pos - difference_type(__n), __pos, __x_copy); } else { std::__uninitialized_move_fill(this->_M_impl._M_start, __pos, __new_start, this->_M_impl._M_start, __x_copy, _M_get_Tp_allocator()); this->_M_impl._M_start = __new_start; std::fill(__old_start, __pos, __x_copy); } } __catch(...) { _M_destroy_nodes(__new_start._M_node, this->_M_impl._M_start._M_node); __throw_exception_again; } } else { iterator __new_finish = _M_reserve_elements_at_back(__n); iterator __old_finish = this->_M_impl._M_finish; const difference_type __elems_after = difference_type(__length) - __elems_before; __pos = this->_M_impl._M_finish - __elems_after; __try { if (__elems_after > difference_type(__n)) { iterator __finish_n = (this->_M_impl._M_finish - difference_type(__n)); std::__uninitialized_move_a(__finish_n, this->_M_impl._M_finish, this->_M_impl._M_finish, _M_get_Tp_allocator()); this->_M_impl._M_finish = __new_finish; _GLIBCXX_MOVE_BACKWARD3(__pos, __finish_n, __old_finish); std::fill(__pos, __pos + difference_type(__n), __x_copy); } else { std::__uninitialized_fill_move(this->_M_impl._M_finish, __pos + difference_type(__n), __x_copy, __pos, this->_M_impl._M_finish, _M_get_Tp_allocator()); this->_M_impl._M_finish = __new_finish; std::fill(__pos, __old_finish, __x_copy); } } __catch(...) { _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1, __new_finish._M_node + 1); __throw_exception_again; } } } template <typename _Tp, typename _Alloc> template <typename _ForwardIterator> void deque<_Tp, _Alloc>:: _M_insert_aux(iterator __pos, _ForwardIterator __first, _ForwardIterator __last, size_type __n) { const difference_type __elemsbefore = __pos - this->_M_impl._M_start; const size_type __length = size(); if (static_cast<size_type>(__elemsbefore) < __length / 2) { iterator __new_start = _M_reserve_elements_at_front(__n); iterator __old_start = this->_M_impl._M_start; __pos = this->_M_impl._M_start + __elemsbefore; __try { if (__elemsbefore >= difference_type(__n)) { iterator __start_n = (this->_M_impl._M_start + difference_type(__n)); std::__uninitialized_move_a(this->_M_impl._M_start, __start_n, __new_start, _M_get_Tp_allocator()); this->_M_impl._M_start = __new_start; _GLIBCXX_MOVE3(__start_n, __pos, __old_start); std::copy(__first, __last, __pos - difference_type(__n)); } else { _ForwardIterator __mid = __first; std::advance(__mid, difference_type(__n) - __elemsbefore); std::__uninitialized_move_copy(this->_M_impl._M_start, __pos, __first, __mid, __new_start, _M_get_Tp_allocator()); this->_M_impl._M_start = __new_start; std::copy(__mid, __last, __old_start); } } __catch(...) { _M_destroy_nodes(__new_start._M_node, this->_M_impl._M_start._M_node); __throw_exception_again; } } else { iterator __new_finish = _M_reserve_elements_at_back(__n); iterator __old_finish = this->_M_impl._M_finish; const difference_type __elemsafter = difference_type(__length) - __elemsbefore; __pos = this->_M_impl._M_finish - __elemsafter; __try { if (__elemsafter > difference_type(__n)) { iterator __finish_n = (this->_M_impl._M_finish - difference_type(__n)); std::__uninitialized_move_a(__finish_n, this->_M_impl._M_finish, this->_M_impl._M_finish, _M_get_Tp_allocator()); this->_M_impl._M_finish = __new_finish; _GLIBCXX_MOVE_BACKWARD3(__pos, __finish_n, __old_finish); std::copy(__first, __last, __pos); } else { _ForwardIterator __mid = __first; std::advance(__mid, __elemsafter); std::__uninitialized_copy_move(__mid, __last, __pos, this->_M_impl._M_finish, this->_M_impl._M_finish, _M_get_Tp_allocator()); this->_M_impl._M_finish = __new_finish; std::copy(__first, __mid, __pos); } } __catch(...) { _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1, __new_finish._M_node + 1); __throw_exception_again; } } } template<typename _Tp, typename _Alloc> void deque<_Tp, _Alloc>:: _M_destroy_data_aux(iterator __first, iterator __last) { for (_Map_pointer __node = __first._M_node + 1; __node < __last._M_node; ++__node) std::_Destroy(*__node, *__node + _S_buffer_size(), _M_get_Tp_allocator()); if (__first._M_node != __last._M_node) { std::_Destroy(__first._M_cur, __first._M_last, _M_get_Tp_allocator()); std::_Destroy(__last._M_first, __last._M_cur, _M_get_Tp_allocator()); } else std::_Destroy(__first._M_cur, __last._M_cur, _M_get_Tp_allocator()); } template <typename _Tp, typename _Alloc> void deque<_Tp, _Alloc>:: _M_new_elements_at_front(size_type __new_elems) { if (this->max_size() - this->size() < __new_elems) __throw_length_error(__N("deque::_M_new_elements_at_front")); const size_type __new_nodes = ((__new_elems + _S_buffer_size() - 1) / _S_buffer_size()); _M_reserve_map_at_front(__new_nodes); size_type __i; __try { for (__i = 1; __i <= __new_nodes; ++__i) *(this->_M_impl._M_start._M_node - __i) = this->_M_allocate_node(); } __catch(...) { for (size_type __j = 1; __j < __i; ++__j) _M_deallocate_node(*(this->_M_impl._M_start._M_node - __j)); __throw_exception_again; } } template <typename _Tp, typename _Alloc> void deque<_Tp, _Alloc>:: _M_new_elements_at_back(size_type __new_elems) { if (this->max_size() - this->size() < __new_elems) __throw_length_error(__N("deque::_M_new_elements_at_back")); const size_type __new_nodes = ((__new_elems + _S_buffer_size() - 1) / _S_buffer_size()); _M_reserve_map_at_back(__new_nodes); size_type __i; __try { for (__i = 1; __i <= __new_nodes; ++__i) *(this->_M_impl._M_finish._M_node + __i) = this->_M_allocate_node(); } __catch(...) { for (size_type __j = 1; __j < __i; ++__j) _M_deallocate_node(*(this->_M_impl._M_finish._M_node + __j)); __throw_exception_again; } } template <typename _Tp, typename _Alloc> void deque<_Tp, _Alloc>:: _M_reallocate_map(size_type __nodes_to_add, bool __add_at_front) { const size_type __old_num_nodes = this->_M_impl._M_finish._M_node - this->_M_impl._M_start._M_node + 1; const size_type __new_num_nodes = __old_num_nodes + __nodes_to_add; _Map_pointer __new_nstart; if (this->_M_impl._M_map_size > 2 * __new_num_nodes) { __new_nstart = this->_M_impl._M_map + (this->_M_impl._M_map_size - __new_num_nodes) / 2 + (__add_at_front ? __nodes_to_add : 0); if (__new_nstart < this->_M_impl._M_start._M_node) std::copy(this->_M_impl._M_start._M_node, this->_M_impl._M_finish._M_node + 1, __new_nstart); else std::copy_backward(this->_M_impl._M_start._M_node, this->_M_impl._M_finish._M_node + 1, __new_nstart + __old_num_nodes); } else { size_type __new_map_size = this->_M_impl._M_map_size + std::max(this->_M_impl._M_map_size, __nodes_to_add) + 2; _Map_pointer __new_map = this->_M_allocate_map(__new_map_size); __new_nstart = __new_map + (__new_map_size - __new_num_nodes) / 2 + (__add_at_front ? __nodes_to_add : 0); std::copy(this->_M_impl._M_start._M_node, this->_M_impl._M_finish._M_node + 1, __new_nstart); _M_deallocate_map(this->_M_impl._M_map, this->_M_impl._M_map_size); this->_M_impl._M_map = __new_map; this->_M_impl._M_map_size = __new_map_size; } this->_M_impl._M_start._M_set_node(__new_nstart); this->_M_impl._M_finish._M_set_node(__new_nstart + __old_num_nodes - 1); } // Overload for deque::iterators, exploiting the "segmented-iterator // optimization". template<typename _Tp> void fill(const _Deque_iterator<_Tp, _Tp&, _Tp*>& __first, const _Deque_iterator<_Tp, _Tp&, _Tp*>& __last, const _Tp& __value) { typedef typename _Deque_iterator<_Tp, _Tp&, _Tp*>::_Self _Self; for (typename _Self::_Map_pointer __node = __first._M_node + 1; __node < __last._M_node; ++__node) std::fill(*__node, *__node + _Self::_S_buffer_size(), __value); if (__first._M_node != __last._M_node) { std::fill(__first._M_cur, __first._M_last, __value); std::fill(__last._M_first, __last._M_cur, __value); } else std::fill(__first._M_cur, __last._M_cur, __value); } template<typename _Tp> _Deque_iterator<_Tp, _Tp&, _Tp*> copy(_Deque_iterator<_Tp, const _Tp&, const _Tp*> __first, _Deque_iterator<_Tp, const _Tp&, const _Tp*> __last, _Deque_iterator<_Tp, _Tp&, _Tp*> __result) { typedef typename _Deque_iterator<_Tp, _Tp&, _Tp*>::_Self _Self; typedef typename _Self::difference_type difference_type; difference_type __len = __last - __first; while (__len > 0) { const difference_type __clen = std::min(__len, std::min(__first._M_last - __first._M_cur, __result._M_last - __result._M_cur)); std::copy(__first._M_cur, __first._M_cur + __clen, __result._M_cur); __first += __clen; __result += __clen; __len -= __clen; } return __result; } template<typename _Tp> _Deque_iterator<_Tp, _Tp&, _Tp*> copy_backward(_Deque_iterator<_Tp, const _Tp&, const _Tp*> __first, _Deque_iterator<_Tp, const _Tp&, const _Tp*> __last, _Deque_iterator<_Tp, _Tp&, _Tp*> __result) { typedef typename _Deque_iterator<_Tp, _Tp&, _Tp*>::_Self _Self; typedef typename _Self::difference_type difference_type; difference_type __len = __last - __first; while (__len > 0) { difference_type __llen = __last._M_cur - __last._M_first; _Tp* __lend = __last._M_cur; difference_type __rlen = __result._M_cur - __result._M_first; _Tp* __rend = __result._M_cur; if (!__llen) { __llen = _Self::_S_buffer_size(); __lend = *(__last._M_node - 1) + __llen; } if (!__rlen) { __rlen = _Self::_S_buffer_size(); __rend = *(__result._M_node - 1) + __rlen; } const difference_type __clen = std::min(__len, std::min(__llen, __rlen)); std::copy_backward(__lend - __clen, __lend, __rend); __last -= __clen; __result -= __clen; __len -= __clen; } return __result; } #if __cplusplus >= 201103L template<typename _Tp> _Deque_iterator<_Tp, _Tp&, _Tp*> move(_Deque_iterator<_Tp, const _Tp&, const _Tp*> __first, _Deque_iterator<_Tp, const _Tp&, const _Tp*> __last, _Deque_iterator<_Tp, _Tp&, _Tp*> __result) { typedef typename _Deque_iterator<_Tp, _Tp&, _Tp*>::_Self _Self; typedef typename _Self::difference_type difference_type; difference_type __len = __last - __first; while (__len > 0) { const difference_type __clen = std::min(__len, std::min(__first._M_last - __first._M_cur, __result._M_last - __result._M_cur)); std::move(__first._M_cur, __first._M_cur + __clen, __result._M_cur); __first += __clen; __result += __clen; __len -= __clen; } return __result; } template<typename _Tp> _Deque_iterator<_Tp, _Tp&, _Tp*> move_backward(_Deque_iterator<_Tp, const _Tp&, const _Tp*> __first, _Deque_iterator<_Tp, const _Tp&, const _Tp*> __last, _Deque_iterator<_Tp, _Tp&, _Tp*> __result) { typedef typename _Deque_iterator<_Tp, _Tp&, _Tp*>::_Self _Self; typedef typename _Self::difference_type difference_type; difference_type __len = __last - __first; while (__len > 0) { difference_type __llen = __last._M_cur - __last._M_first; _Tp* __lend = __last._M_cur; difference_type __rlen = __result._M_cur - __result._M_first; _Tp* __rend = __result._M_cur; if (!__llen) { __llen = _Self::_S_buffer_size(); __lend = *(__last._M_node - 1) + __llen; } if (!__rlen) { __rlen = _Self::_S_buffer_size(); __rend = *(__result._M_node - 1) + __rlen; } const difference_type __clen = std::min(__len, std::min(__llen, __rlen)); std::move_backward(__lend - __clen, __lend, __rend); __last -= __clen; __result -= __clen; __len -= __clen; } return __result; } #endif _GLIBCXX_END_NAMESPACE_CONTAINER _GLIBCXX_END_NAMESPACE_VERSION } // namespace std #endif
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