// Deque implementation (out of line) -*- C++ -*- // Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 2, or (at your option) // 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. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING. If not, write to the Free // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, // USA. // As a special exception, you may use this file as part of a free software // library without restriction. Specifically, if other files instantiate // templates or use macros or inline functions from this file, or you compile // this file and link it with other files to produce an executable, this // file does not by itself cause the resulting executable to be covered by // the GNU General Public License. This exception does not however // invalidate any other reasons why the executable file might be covered by // the GNU General Public License. /* * * 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 deque.tcc * This is an internal header file, included by other library headers. * You should not attempt to use it directly. */ #ifndef _DEQUE_TCC #define _DEQUE_TCC 1 namespace _GLIBCXX_STD { template deque<_Tp,_Alloc>& deque<_Tp,_Alloc>:: operator=(const deque& __x) { const size_type __len = size(); if (&__x != this) { if (__len >= __x.size()) erase(std::copy(__x.begin(), __x.end(), this->_M_impl._M_start), this->_M_impl._M_finish); else { const_iterator __mid = __x.begin() + difference_type(__len); std::copy(__x.begin(), __mid, this->_M_impl._M_start); insert(this->_M_impl._M_finish, __mid, __x.end()); } } return *this; } template typename deque<_Tp,_Alloc>::iterator deque<_Tp,_Alloc>:: insert(iterator position, const value_type& __x) { 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, __x); } template typename deque<_Tp,_Alloc>::iterator deque<_Tp,_Alloc>:: erase(iterator __position) { iterator __next = __position; ++__next; size_type __index = __position - this->_M_impl._M_start; if (__index < (size() >> 1)) { std::copy_backward(this->_M_impl._M_start, __position, __next); pop_front(); } else { std::copy(__next, this->_M_impl._M_finish, __position); pop_back(); } return this->_M_impl._M_start + __index; } template typename deque<_Tp,_Alloc>::iterator deque<_Tp,_Alloc>:: erase(iterator __first, iterator __last) { if (__first == this->_M_impl._M_start && __last == this->_M_impl._M_finish) { clear(); return this->_M_impl._M_finish; } else { const difference_type __n = __last - __first; const difference_type __elems_before = __first - this->_M_impl._M_start; if (static_cast(__elems_before) < (size() - __n) / 2) { std::copy_backward(this->_M_impl._M_start, __first, __last); iterator __new_start = this->_M_impl._M_start + __n; std::_Destroy(this->_M_impl._M_start, __new_start); _M_destroy_nodes(this->_M_impl._M_start._M_node, __new_start._M_node); this->_M_impl._M_start = __new_start; } else { std::copy(__last, this->_M_impl._M_finish, __first); iterator __new_finish = this->_M_impl._M_finish - __n; std::_Destroy(__new_finish, this->_M_impl._M_finish); _M_destroy_nodes(__new_finish._M_node + 1, this->_M_impl._M_finish._M_node + 1); this->_M_impl._M_finish = __new_finish; } return this->_M_impl._M_start + __elems_before; } } template void deque<_Tp,_Alloc>:: clear() { for (_Map_pointer __node = this->_M_impl._M_start._M_node + 1; __node < this->_M_impl._M_finish._M_node; ++__node) { std::_Destroy(*__node, *__node + _S_buffer_size()); _M_deallocate_node(*__node); } if (this->_M_impl._M_start._M_node != this->_M_impl._M_finish._M_node) { std::_Destroy(this->_M_impl._M_start._M_cur, this->_M_impl._M_start._M_last); std::_Destroy(this->_M_impl._M_finish._M_first, this->_M_impl._M_finish._M_cur); _M_deallocate_node(this->_M_impl._M_finish._M_first); } else std::_Destroy(this->_M_impl._M_start._M_cur, this->_M_impl._M_finish._M_cur); this->_M_impl._M_finish = this->_M_impl._M_start; } template template void deque<_Tp,_Alloc> ::_M_assign_aux(_InputIterator __first, _InputIterator __last, input_iterator_tag) { iterator __cur = begin(); for ( ; __first != __last && __cur != end(); ++__cur, ++__first) *__cur = *__first; if (__first == __last) erase(__cur, end()); else insert(end(), __first, __last); } template 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(__new_start, this->_M_impl._M_start, __x); 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(this->_M_impl._M_finish, __new_finish, __x); 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); } template 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(*__cur, *__cur + _S_buffer_size(), __value); std::uninitialized_fill(this->_M_impl._M_finish._M_first, this->_M_impl._M_finish._M_cur, __value); } catch(...) { std::_Destroy(this->_M_impl._M_start, iterator(*__cur, __cur)); __throw_exception_again; } } template template void deque<_Tp,_Alloc>:: _M_range_initialize(_InputIterator __first, _InputIterator __last, input_iterator_tag) { this->_M_initialize_map(0); try { for ( ; __first != __last; ++__first) push_back(*__first); } catch(...) { clear(); __throw_exception_again; } } template template void deque<_Tp,_Alloc>:: _M_range_initialize(_ForwardIterator __first, _ForwardIterator __last, 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(__first, __mid, *__cur_node); __first = __mid; } std::uninitialized_copy(__first, __last, this->_M_impl._M_finish._M_first); } catch(...) { std::_Destroy(this->_M_impl._M_start, iterator(*__cur_node, __cur_node)); __throw_exception_again; } } // Called only if _M_impl._M_finish._M_cur == _M_impl._M_finish._M_last - 1. template void deque<_Tp,_Alloc>:: _M_push_back_aux(const value_type& __t) { value_type __t_copy = __t; _M_reserve_map_at_back(); *(this->_M_impl._M_finish._M_node + 1) = this->_M_allocate_node(); try { std::_Construct(this->_M_impl._M_finish._M_cur, __t_copy); 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 void deque<_Tp,_Alloc>:: _M_push_front_aux(const value_type& __t) { value_type __t_copy = __t; _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; std::_Construct(this->_M_impl._M_start._M_cur, __t_copy); } 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 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; std::_Destroy(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 void deque<_Tp,_Alloc>:: _M_pop_front_aux() { std::_Destroy(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 template void deque<_Tp,_Alloc>:: _M_range_insert_aux(iterator __pos, _InputIterator __first, _InputIterator __last, input_iterator_tag) { std::copy(__first, __last, std::inserter(*this, __pos)); } template template void deque<_Tp,_Alloc>:: _M_range_insert_aux(iterator __pos, _ForwardIterator __first, _ForwardIterator __last, forward_iterator_tag) { 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(__first, __last, __new_start); 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(__first, __last, this->_M_impl._M_finish); 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 deque<_Tp, _Alloc>::iterator deque<_Tp,_Alloc>:: _M_insert_aux(iterator __pos, const value_type& __x) { difference_type __index = __pos - this->_M_impl._M_start; value_type __x_copy = __x; // XXX copy if (static_cast(__index) < size() / 2) { push_front(front()); iterator __front1 = this->_M_impl._M_start; ++__front1; iterator __front2 = __front1; ++__front2; __pos = this->_M_impl._M_start + __index; iterator __pos1 = __pos; ++__pos1; std::copy(__front2, __pos1, __front1); } else { push_back(back()); iterator __back1 = this->_M_impl._M_finish; --__back1; iterator __back2 = __back1; --__back2; __pos = this->_M_impl._M_start + __index; std::copy_backward(__pos, __back2, __back1); } *__pos = __x_copy; return __pos; } template 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; 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_copy(this->_M_impl._M_start, __start_n, __new_start); this->_M_impl._M_start = __new_start; std::copy(__start_n, __pos, __old_start); fill(__pos - difference_type(__n), __pos, __x_copy); } else { std::__uninitialized_copy_fill(this->_M_impl._M_start, __pos, __new_start, this->_M_impl._M_start, __x_copy); 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_copy(__finish_n, this->_M_impl._M_finish, this->_M_impl._M_finish); this->_M_impl._M_finish = __new_finish; std::copy_backward(__pos, __finish_n, __old_finish); std::fill(__pos, __pos + difference_type(__n), __x_copy); } else { std::__uninitialized_fill_copy(this->_M_impl._M_finish, __pos + difference_type(__n), __x_copy, __pos, this->_M_impl._M_finish); 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 template 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; size_type __length = size(); if (static_cast(__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_copy(this->_M_impl._M_start, __start_n, __new_start); this->_M_impl._M_start = __new_start; std::copy(__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_copy_copy(this->_M_impl._M_start, __pos, __first, __mid, __new_start); 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_copy(__finish_n, this->_M_impl._M_finish, this->_M_impl._M_finish); this->_M_impl._M_finish = __new_finish; std::copy_backward(__pos, __finish_n, __old_finish); std::copy(__first, __last, __pos); } else { _ForwardIterator __mid = __first; std::advance(__mid, __elemsafter); std::__uninitialized_copy_copy(__mid, __last, __pos, this->_M_impl._M_finish, this->_M_impl._M_finish); 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 void deque<_Tp,_Alloc>:: _M_new_elements_at_front(size_type __new_elems) { 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 void deque<_Tp,_Alloc>:: _M_new_elements_at_back(size_type __new_elems) { 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 void deque<_Tp,_Alloc>:: _M_reallocate_map(size_type __nodes_to_add, bool __add_at_front) { size_type __old_num_nodes = this->_M_impl._M_finish._M_node - this->_M_impl._M_start._M_node + 1; 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); } } // namespace std #endif