bi-link.hpp
Go to the documentation of this file.00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Christian Schulte <schulte@gecode.org> 00005 * 00006 * Copyright: 00007 * Christian Schulte, 2003 00008 * 00009 * Last modified: 00010 * $Date: 2011-08-17 21:42:11 +0200 (Wed, 17 Aug 2011) $ by $Author: schulte $ 00011 * $Revision: 12306 $ 00012 * 00013 * This file is part of Gecode, the generic constraint 00014 * development environment: 00015 * http://www.gecode.org 00016 * 00017 * Permission is hereby granted, free of charge, to any person obtaining 00018 * a copy of this software and associated documentation files (the 00019 * "Software"), to deal in the Software without restriction, including 00020 * without limitation the rights to use, copy, modify, merge, publish, 00021 * distribute, sublicense, and/or sell copies of the Software, and to 00022 * permit persons to whom the Software is furnished to do so, subject to 00023 * the following conditions: 00024 * 00025 * The above copyright notice and this permission notice shall be 00026 * included in all copies or substantial portions of the Software. 00027 * 00028 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00029 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00030 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00031 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00032 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00033 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00034 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00035 * 00036 */ 00037 00038 namespace Gecode { namespace Int { namespace ViewValGraph { 00039 00040 forceinline 00041 BiLink::BiLink(void) { 00042 _prev = this; _next = this; 00043 } 00044 00045 forceinline BiLink* 00046 BiLink::prev(void) const { 00047 return _prev; 00048 } 00049 forceinline BiLink* 00050 BiLink::next(void) const { 00051 return _next; 00052 } 00053 forceinline void 00054 BiLink::prev(BiLink* l) { 00055 _prev = l; 00056 } 00057 forceinline void 00058 BiLink::next(BiLink* l) { 00059 _next = l; 00060 } 00061 00062 forceinline void 00063 BiLink::add(BiLink* l) { 00064 l->_prev = this; l->_next = _next; 00065 _next->_prev = l; _next = l; 00066 } 00067 forceinline void 00068 BiLink::unlink(void) { 00069 BiLink* p = _prev; BiLink* n = _next; 00070 p->_next = n; n->_prev = p; 00071 } 00072 00073 forceinline void 00074 BiLink::mark(void) { 00075 _next = NULL; 00076 } 00077 forceinline bool 00078 BiLink::marked(void) const { 00079 return _next == NULL; 00080 } 00081 forceinline bool 00082 BiLink::empty(void) const { 00083 return _prev == this; 00084 } 00085 00086 }}} 00087 00088 // STATISTICS: int-prop 00089