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