rel-op-const-vcv.cpp
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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Guido Tack <tack@gecode.org> 00005 * 00006 * Contributing authors: 00007 * Gabor Szokoli <szokoli@gecode.org> 00008 * 00009 * Copyright: 00010 * Guido Tack, 2004, 2005 00011 * 00012 * Last modified: 00013 * $Date: 2010-06-07 14:18:14 +0200 (Mon, 07 Jun 2010) $ by $Author: tack $ 00014 * $Revision: 11048 $ 00015 * 00016 * This file is part of Gecode, the generic constraint 00017 * development environment: 00018 * http://www.gecode.org 00019 * 00020 * Permission is hereby granted, free of charge, to any person obtaining 00021 * a copy of this software and associated documentation files (the 00022 * "Software"), to deal in the Software without restriction, including 00023 * without limitation the rights to use, copy, modify, merge, publish, 00024 * distribute, sublicense, and/or sell copies of the Software, and to 00025 * permit persons to whom the Software is furnished to do so, subject to 00026 * the following conditions: 00027 * 00028 * The above copyright notice and this permission notice shall be 00029 * included in all copies or substantial portions of the Software. 00030 * 00031 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00032 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00033 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00034 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00035 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00036 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00037 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00038 * 00039 */ 00040 00041 #include <gecode/set.hh> 00042 #include <gecode/set/rel.hh> 00043 #include <gecode/set/rel-op.hh> 00044 00045 namespace Gecode { 00046 using namespace Gecode::Set; 00047 using namespace Gecode::Set::Rel; 00048 using namespace Gecode::Set::RelOp; 00049 00050 void 00051 rel(Home home, SetVar x, SetOpType op, const IntSet& y, SetRelType r, 00052 SetVar z) { 00053 Set::Limits::check(y, "Set::rel"); 00054 ConstSetView yv(home, y); 00055 00056 if (op==SOT_MINUS) { 00057 switch (r) { 00058 case SRT_EQ: 00059 { 00060 GlbRanges<ConstSetView> yr(yv); 00061 RangesCompl<GlbRanges<ConstSetView> > yrc(yr); 00062 IntSet yc(yrc); 00063 ConstSetView cy(home, yc); 00064 GECODE_ES_FAIL( 00065 (Intersection<ConstSetView, 00066 SetView,SetView> 00067 ::post(home,cy,x,z))); 00068 } 00069 break; 00070 case SRT_NQ: 00071 { 00072 SetVar tmp(home); 00073 GECODE_ES_FAIL( 00074 (Distinct<SetView,SetView> 00075 ::post(home,z,tmp))); 00076 GlbRanges<ConstSetView> yr(yv); 00077 RangesCompl<GlbRanges<ConstSetView> > yrc(yr); 00078 IntSet yc(yrc); 00079 ConstSetView cy(home, yc); 00080 GECODE_ES_FAIL( 00081 (Intersection<ConstSetView, 00082 SetView,SetView> 00083 ::post(home,cy,x,tmp))); 00084 } 00085 break; 00086 case SRT_SUB: 00087 { 00088 GlbRanges<ConstSetView> yr(yv); 00089 RangesCompl<GlbRanges<ConstSetView> > yrc(yr); 00090 IntSet yc(yrc); 00091 ConstSetView cy(home, yc); 00092 GECODE_ES_FAIL( 00093 (SuperOfInter<ConstSetView,SetView,SetView> 00094 ::post(home,cy,x,z))); 00095 00096 } 00097 break; 00098 case SRT_SUP: 00099 { 00100 SetVar tmp(home); 00101 GECODE_ES_FAIL( 00102 (Subset<SetView,SetView>::post(home,z,tmp))); 00103 00104 GlbRanges<ConstSetView> yr(yv); 00105 RangesCompl<GlbRanges<ConstSetView> > yrc(yr); 00106 IntSet yc(yrc); 00107 ConstSetView cy(home, yc); 00108 00109 SetView xv(x); 00110 GECODE_ES_FAIL( 00111 (Intersection<ConstSetView, 00112 SetView,SetView> 00113 ::post(home,cy,xv,tmp))); 00114 } 00115 break; 00116 case SRT_DISJ: 00117 { 00118 SetVar tmp(home); 00119 EmptyView emptyset; 00120 GECODE_ES_FAIL((SuperOfInter<SetView,SetView,EmptyView> 00121 ::post(home, z, tmp, emptyset))); 00122 00123 GlbRanges<ConstSetView> yr(yv); 00124 RangesCompl<GlbRanges<ConstSetView> > yrc(yr); 00125 IntSet yc(yrc); 00126 ConstSetView cy(home, yc); 00127 GECODE_ES_FAIL( 00128 (Intersection<ConstSetView, 00129 SetView,SetView> 00130 ::post(home,cy,x,tmp))); 00131 } 00132 break; 00133 case SRT_CMPL: 00134 { 00135 SetView xv(x); 00136 ComplementView<SetView> cx(xv); 00137 GECODE_ES_FAIL( 00138 (Union<ConstSetView, 00139 ComplementView<SetView>, 00140 SetView>::post(home, yv, cx, z))); 00141 } 00142 break; 00143 default: 00144 throw UnknownRelation("Set::rel"); 00145 } 00146 } else { 00147 rel(home, y, op, x, r, z); 00148 } 00149 } 00150 } 00151 00152 // STATISTICS: set-post