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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [libstdc++-v3/] [src/] [list.cc] - Rev 617
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// std::list utilities implementation -*- C++ -*- // Copyright (C) 2003, 2005, 2009, 2010 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) 1996,1997 * 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. */ #include <list> _GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D) void _List_node_base::swap(_List_node_base& __x, _List_node_base& __y) throw() { if ( __x._M_next != &__x ) { if ( __y._M_next != &__y ) { // Both __x and __y are not empty. std::swap(__x._M_next,__y._M_next); std::swap(__x._M_prev,__y._M_prev); __x._M_next->_M_prev = __x._M_prev->_M_next = &__x; __y._M_next->_M_prev = __y._M_prev->_M_next = &__y; } else { // __x is not empty, __y is empty. __y._M_next = __x._M_next; __y._M_prev = __x._M_prev; __y._M_next->_M_prev = __y._M_prev->_M_next = &__y; __x._M_next = __x._M_prev = &__x; } } else if ( __y._M_next != &__y ) { // __x is empty, __y is not empty. __x._M_next = __y._M_next; __x._M_prev = __y._M_prev; __x._M_next->_M_prev = __x._M_prev->_M_next = &__x; __y._M_next = __y._M_prev = &__y; } } void _List_node_base::_M_transfer(_List_node_base * const __first, _List_node_base * const __last) throw() { if (this != __last) { // Remove [first, last) from its old position. __last->_M_prev->_M_next = this; __first->_M_prev->_M_next = __last; this->_M_prev->_M_next = __first; // Splice [first, last) into its new position. _List_node_base* const __tmp = this->_M_prev; this->_M_prev = __last->_M_prev; __last->_M_prev = __first->_M_prev; __first->_M_prev = __tmp; } } void _List_node_base::_M_reverse() throw() { _List_node_base* __tmp = this; do { std::swap(__tmp->_M_next, __tmp->_M_prev); // Old next node is now prev. __tmp = __tmp->_M_prev; } while (__tmp != this); } void _List_node_base::_M_hook(_List_node_base* const __position) throw() { this->_M_next = __position; this->_M_prev = __position->_M_prev; __position->_M_prev->_M_next = this; __position->_M_prev = this; } void _List_node_base::_M_unhook() throw() { _List_node_base* const __next_node = this->_M_next; _List_node_base* const __prev_node = this->_M_prev; __prev_node->_M_next = __next_node; __next_node->_M_prev = __prev_node; } _GLIBCXX_END_NESTED_NAMESPACE
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