163 lines
5.2 KiB
C++
163 lines
5.2 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.hh>
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#include <gecode/set/rel.hh>
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#include <gecode/set/rel-op.hh>
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namespace Gecode {
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using namespace Gecode::Set;
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using namespace Gecode::Set::Rel;
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using namespace Gecode::Set::RelOp;
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void
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rel(Home home, SetVar x, SetOpType op, const IntSet& y, SetRelType r,
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SetVar z) {
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Set::Limits::check(y, "Set::rel");
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ConstSetView yv(home, y);
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if (op==SOT_MINUS) {
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switch (r) {
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case SRT_EQ:
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{
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GlbRanges<ConstSetView> yr(yv);
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RangesCompl<GlbRanges<ConstSetView> > yrc(yr);
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IntSet yc(yrc);
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ConstSetView cy(home, yc);
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GECODE_ES_FAIL(
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(Intersection<ConstSetView,
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SetView,SetView>
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::post(home,cy,x,z)));
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}
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break;
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case SRT_LQ: case SRT_LE: case SRT_GQ: case SRT_GR:
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{
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GlbRanges<ConstSetView> yr(yv);
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RangesCompl<GlbRanges<ConstSetView> > yrc(yr);
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IntSet yc(yrc);
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ConstSetView cy(home, yc);
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SetVar tmp(home,IntSet::empty,Set::Limits::min,Set::Limits::max);
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GECODE_ES_FAIL(
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(Intersection<ConstSetView,
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SetView,SetView>
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::post(home,cy,x,tmp)));
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rel(home,tmp,r,z);
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}
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break;
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case SRT_NQ:
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{
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SetVar tmp(home);
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GECODE_ES_FAIL(
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(Distinct<SetView,SetView>
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::post(home,z,tmp)));
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GlbRanges<ConstSetView> yr(yv);
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RangesCompl<GlbRanges<ConstSetView> > yrc(yr);
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IntSet yc(yrc);
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ConstSetView cy(home, yc);
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GECODE_ES_FAIL(
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(Intersection<ConstSetView,
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SetView,SetView>
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::post(home,cy,x,tmp)));
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}
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break;
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case SRT_SUB:
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{
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GlbRanges<ConstSetView> yr(yv);
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RangesCompl<GlbRanges<ConstSetView> > yrc(yr);
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IntSet yc(yrc);
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ConstSetView cy(home, yc);
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GECODE_ES_FAIL(
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(SuperOfInter<ConstSetView,SetView,SetView>
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::post(home,cy,x,z)));
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}
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break;
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case SRT_SUP:
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{
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SetVar tmp(home);
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GECODE_ES_FAIL(
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(Subset<SetView,SetView>::post(home,z,tmp)));
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GlbRanges<ConstSetView> yr(yv);
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RangesCompl<GlbRanges<ConstSetView> > yrc(yr);
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IntSet yc(yrc);
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ConstSetView cy(home, yc);
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SetView xv(x);
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GECODE_ES_FAIL(
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(Intersection<ConstSetView,
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SetView,SetView>
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::post(home,cy,xv,tmp)));
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}
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break;
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case SRT_DISJ:
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{
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SetVar tmp(home);
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EmptyView emptyset;
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GECODE_ES_FAIL((SuperOfInter<SetView,SetView,EmptyView>
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::post(home, z, tmp, emptyset)));
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GlbRanges<ConstSetView> yr(yv);
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RangesCompl<GlbRanges<ConstSetView> > yrc(yr);
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IntSet yc(yrc);
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ConstSetView cy(home, yc);
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GECODE_ES_FAIL(
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(Intersection<ConstSetView,
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SetView,SetView>
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::post(home,cy,x,tmp)));
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}
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break;
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case SRT_CMPL:
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{
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SetView xv(x);
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ComplementView<SetView> cx(xv);
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GECODE_ES_FAIL(
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(Union<ConstSetView,
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ComplementView<SetView>,
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SetView>::post(home, yv, cx, z)));
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}
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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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} else {
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rel(home, y, op, x, r, z);
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}
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}
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}
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// STATISTICS: set-post
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