Jip J. Dekker
2572df0663
git-subtree-dir: software/gecode_base git-subtree-split: bbefcea214fec798a0f5acc442581984555acd21
253 lines
7.1 KiB
C++
253 lines
7.1 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Guido Tack <tack@gecode.org>
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*
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* Contributing authors:
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* Gabor Szokoli <szokoli@gecode.org>
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*
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* Copyright:
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* Guido Tack, 2004, 2005
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <gecode/set/rel.hh>
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#include <gecode/set/rel-op.hh>
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#include <gecode/set/int.hh>
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namespace Gecode { namespace Set {
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template<class View0, class View1>
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forceinline void
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rel_post(Home home, View0 x0, SetRelType r, View1 x1) {
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using namespace Set::Rel;
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using namespace Set::RelOp;
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GECODE_POST;
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switch (r) {
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case SRT_EQ:
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GECODE_ES_FAIL((Eq<View0,View1>::post(home,x0,x1)));
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break;
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case SRT_NQ:
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GECODE_ES_FAIL((Distinct<View0,View1>::post(home,x0,x1)));
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break;
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case SRT_SUB:
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GECODE_ES_FAIL((Subset<View0,View1>::post(home, x0,x1)));
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break;
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case SRT_SUP:
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GECODE_ES_FAIL((Subset<View1,View0>::post(home, x1,x0)));
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break;
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case SRT_DISJ:
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{
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EmptyView emptyset;
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GECODE_ES_FAIL((SuperOfInter<View0,View1,EmptyView>
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::post(home, x0, x1, emptyset)));
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}
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break;
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case SRT_CMPL:
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{
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ComplementView<View0> cx0(x0);
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GECODE_ES_FAIL((Eq<ComplementView<View0>, View1>
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::post(home, cx0, x1)));
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}
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break;
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case SRT_LQ:
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GECODE_ES_FAIL((Lq<View0,View1,false>::post(home,x0,x1)));
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break;
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case SRT_LE:
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GECODE_ES_FAIL((Lq<View0,View1,true>::post(home,x0,x1)));
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break;
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case SRT_GQ:
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GECODE_ES_FAIL((Lq<View1,View0,false>::post(home,x1,x0)));
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break;
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case SRT_GR:
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GECODE_ES_FAIL((Lq<View1,View0,true>::post(home,x1,x0)));
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break;
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default:
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throw UnknownRelation("Set::rel");
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}
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}
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template<class View0, class View1, ReifyMode rm>
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forceinline void
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rel_re(Home home, View0 x, SetRelType r, View1 y, BoolVar b) {
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using namespace Set::Rel;
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using namespace Set::RelOp;
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GECODE_POST;
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switch (r) {
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case SRT_EQ:
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GECODE_ES_FAIL((ReEq<View0,View1,Gecode::Int::BoolView,rm>
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::post(home, x,y,b)));
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break;
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case SRT_NQ:
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{
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Gecode::Int::NegBoolView notb(b);
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switch (rm) {
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case RM_EQV:
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GECODE_ES_FAIL((ReEq<View0,View1,Gecode::Int::NegBoolView,RM_EQV>
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::post(home,x,y,notb)));
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break;
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case RM_IMP:
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GECODE_ES_FAIL((ReEq<View0,View1,Gecode::Int::NegBoolView,RM_PMI>
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::post(home,x,y,notb)));
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break;
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case RM_PMI:
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GECODE_ES_FAIL((ReEq<View0,View1,Gecode::Int::NegBoolView,RM_IMP>
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::post(home,x,y,notb)));
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break;
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default: throw Gecode::Int::UnknownReifyMode("Set::rel");
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}
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}
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break;
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case SRT_SUB:
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GECODE_ES_FAIL((ReSubset<View0,View1,Gecode::Int::BoolView,rm>::post(home, x,y,b)));
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break;
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case SRT_SUP:
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GECODE_ES_FAIL((ReSubset<View1,View0,Gecode::Int::BoolView,rm>::post(home, y,x,b)));
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break;
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case SRT_DISJ:
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{
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// x||y <=> b is equivalent to
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// ( y <= complement(x) ) <=> b
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ComplementView<View0> xc(x);
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GECODE_ES_FAIL((ReSubset<View1,ComplementView<View0>,
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Gecode::Int::BoolView,rm>
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::post(home, y, xc, b)));
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}
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break;
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case SRT_CMPL:
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{
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ComplementView<View0> xc(x);
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GECODE_ES_FAIL((ReEq<ComplementView<View0>,View1,
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Gecode::Int::BoolView,rm>
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::post(home, xc, y, b)));
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}
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break;
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case SRT_LQ:
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GECODE_ES_FAIL((ReLq<View0,View1,rm,false>::post(home,x,y,b)));
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break;
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case SRT_LE:
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GECODE_ES_FAIL((ReLq<View0,View1,rm,true>::post(home,x,y,b)));
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break;
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case SRT_GQ:
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GECODE_ES_FAIL((ReLq<View1,View0,rm,false>::post(home,y,x,b)));
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break;
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case SRT_GR:
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GECODE_ES_FAIL((ReLq<View1,View0,rm,true>::post(home,y,x,b)));
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break;
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default:
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throw UnknownRelation("Set::rel");
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}
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}
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}}
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namespace Gecode {
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void
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rel(Home home, SetVar x, SetRelType r, SetVar y) {
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using namespace Set;
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rel_post<SetView,SetView>(home,x,r,y);
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}
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void
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rel(Home home, SetVar s, SetRelType r, IntVar x) {
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using namespace Set;
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Gecode::Int::IntView xv(x);
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SingletonView xsingle(xv);
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rel_post<SetView,SingletonView>(home,s,r,xv);
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}
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void
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rel(Home home, IntVar x, SetRelType r, SetVar s) {
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using namespace Set;
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switch (r) {
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case SRT_SUB:
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rel(home, s, SRT_SUP, x);
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break;
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case SRT_SUP:
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rel(home, s, SRT_SUB, x);
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break;
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default:
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rel(home, s, r, x);
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}
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}
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void
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rel(Home home, SetVar x, SetRelType rt, SetVar y, Reify r) {
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using namespace Set;
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switch (r.mode()) {
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case RM_EQV:
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rel_re<SetView,SetView,RM_EQV>(home,x,rt,y,r.var());
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break;
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case RM_IMP:
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rel_re<SetView,SetView,RM_IMP>(home,x,rt,y,r.var());
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break;
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case RM_PMI:
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rel_re<SetView,SetView,RM_PMI>(home,x,rt,y,r.var());
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break;
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default: throw Gecode::Int::UnknownReifyMode("Set::rel");
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}
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}
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void
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rel(Home home, SetVar s, SetRelType rt, IntVar x, Reify r) {
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using namespace Set;
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Gecode::Int::IntView xv(x);
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SingletonView xsingle(xv);
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switch (r.mode()) {
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case RM_EQV:
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rel_re<SetView,SingletonView,RM_EQV>(home,s,rt,xsingle,r.var());
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break;
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case RM_IMP:
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rel_re<SetView,SingletonView,RM_IMP>(home,s,rt,xsingle,r.var());
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break;
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case RM_PMI:
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rel_re<SetView,SingletonView,RM_PMI>(home,s,rt,xsingle,r.var());
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break;
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default: throw Gecode::Int::UnknownReifyMode("Set::rel");
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}
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}
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void
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rel(Home home, IntVar x, SetRelType rt, SetVar s, Reify r) {
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using namespace Set;
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switch (rt) {
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case SRT_SUB:
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rel(home, s, SRT_SUP, x, r);
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break;
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case SRT_SUP:
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rel(home, s, SRT_SUB, x, r);
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break;
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default:
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rel(home, s, rt, x, r);
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}
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}
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}
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// STATISTICS: set-post
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