precede.cpp
Go to the documentation of this file.00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Christopher Mears <Chris.Mears@monash.edu> 00005 * 00006 * Contributing authors: 00007 * Christian Schulte <schulte@gecode.org> 00008 * Guido Tack <tack@gecode.org> 00009 * 00010 * Copyright: 00011 * Christopher Mears, 2011 00012 * Christian Schulte, 2011 00013 * Guido Tack, 2011 00014 * 00015 * This file is part of Gecode, the generic constraint 00016 * development environment: 00017 * http://www.gecode.org 00018 * 00019 * Permission is hereby granted, free of charge, to any person obtaining 00020 * a copy of this software and associated documentation files (the 00021 * "Software"), to deal in the Software without restriction, including 00022 * without limitation the rights to use, copy, modify, merge, publish, 00023 * distribute, sublicense, and/or sell copies of the Software, and to 00024 * permit persons to whom the Software is furnished to do so, subject to 00025 * the following conditions: 00026 * 00027 * The above copyright notice and this permission notice shall be 00028 * included in all copies or substantial portions of the Software. 00029 * 00030 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00031 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00032 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00033 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00034 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00035 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00036 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00037 * 00038 */ 00039 00040 #include <gecode/set/precede.hh> 00041 00042 namespace Gecode { 00043 00044 void 00045 precede(Home home, const SetVarArgs& x, int s, int t) { 00046 using namespace Set; 00047 Limits::check(s,"Set::precede"); 00048 Limits::check(t,"Set::precede"); 00049 GECODE_POST; 00050 00051 ViewArray<SetView> y(home, x); 00052 GECODE_ES_FAIL(Precede::Single<SetView>::post(home, y, s, t)); 00053 } 00054 00055 void 00056 precede(Home home, const SetVarArgs& x, const IntArgs& c) { 00057 using namespace Set; 00058 if (c.size() < 2) 00059 return; 00060 for (int i=c.size(); i--; ) 00061 Limits::check(c[i],"Set::precede"); 00062 GECODE_POST; 00063 00064 for (int i=c.size()-1; i--; ) { 00065 ViewArray<SetView> y(home, x); 00066 GECODE_ES_FAIL(Precede::Single<SetView>::post(home, y, c[i], c[i+1])); 00067 } 00068 } 00069 00070 } 00071 00072 // STATISTICS: set-post