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select.cc

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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  *     Christian Schulte <schulte@gecode.org>
00006  *
00007  *  Copyright:
00008  *     Guido Tack, 2004
00009  *     Christian Schulte, 2004
00010  *
00011  *  Last modified:
00012  *     $Date: 2008-02-28 14:12:40 +0100 (Thu, 28 Feb 2008) $ by $Author: tack $
00013  *     $Revision: 6344 $
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/select.hh"
00041 
00042 namespace Gecode {
00043 
00044   using namespace Gecode::Set;
00045 
00046   void
00047   selectUnion(Space* home, const SetVarArgs& x, SetVar y, SetVar z) {
00048     if (home->failed()) return;
00049     Set::Select::IdxViewArray<SetView> iv(home, x);
00050     GECODE_ES_FAIL(home,
00051                    (Select::SelectUnion<SetView,SetView>::
00052                     post(home,z,iv,y)));
00053   }
00054 
00055   void
00056   selectUnion(Space* home, const IntSetArgs& s, SetVar y, SetVar z) {
00057     SharedArray<IntSet> x(s.size());
00058     for (int i=s.size(); i--;)
00059       new (&x[i]) IntSet(s[i]);
00060     if (home->failed()) return;
00061     GECODE_ES_FAIL(home,
00062                    (Select::SelectUnionConst<SetView,SetView>::
00063                     post(home,z,x,y)));
00064   }
00065 
00066   void
00067   selectInter(Space* home, const SetVarArgs& x, SetVar y, SetVar z) {
00068     if (home->failed()) return;
00069     Set::Select::IdxViewArray<SetView> iv(home, x);
00070     IntSet universe(Set::Limits::min,
00071                     Set::Limits::max);
00072     GECODE_ES_FAIL(home,
00073                    (Select::SelectIntersection<SetView,SetView>::
00074                     post(home,z,iv,y,universe)));
00075   }
00076 
00077   void
00078   selectInterIn(Space* home, const SetVarArgs& x, SetVar y, SetVar z,
00079                 const IntSet& universe) {
00080     if (home->failed()) return;
00081     Set::Select::IdxViewArray<SetView> iv(home, x);
00082     GECODE_ES_FAIL(home,
00083                    (Select::SelectIntersection<SetView,SetView>::
00084                     post(home,z,iv,y,universe)));
00085   }
00086 
00087   void
00088   selectSet(Space* home, const SetVarArgs& x, IntVar y, SetVar z) {
00089     if (home->failed()) return;
00090     Set::Select::IdxViewArray<SetView > iv(home, x);
00091     SetView zv(z);
00092 
00093     Int::IntView yv(y);
00094     SingletonView single(yv);
00095     GECODE_ES_FAIL(home,(Select::SelectUnion<SetView,
00096                          SingletonView>::post(home, z, iv, single)));
00097   }
00098 
00099   void
00100   selectSet(Space* home, const IntSetArgs& s, IntVar y, SetVar z) {
00101     for (int i=s.size(); i--;)
00102       Set::Limits::check(s[i], "Set::selectSet");
00103     if (home->failed()) return;
00104     SetView zv(z);
00105     SharedArray<IntSet> x(s.size());
00106     for (int i=s.size(); i--;)
00107       new (&x[i]) IntSet(s[i]);
00108 
00109     Int::IntView yv(y);
00110     SingletonView single(yv);
00111     GECODE_ES_FAIL(home,(Select::SelectUnionConst<SetView,
00112                          SingletonView>::post(home, z, x, single)));
00113   }
00114 
00115   void
00116   selectDisjoint(Space* home, const SetVarArgs& x, SetVar y) {
00117     if (home->failed()) return;
00118     Set::Select::IdxViewArray<SetView> iv(home, x);
00119     GECODE_ES_FAIL(home,Select::SelectDisjoint::post(home,iv,y));
00120   }
00121 
00122   namespace {
00123     GECODE_REGISTER2(Select::SelectUnion<Gecode::Set::SetView, Gecode::Set::SingletonView>);
00124     GECODE_REGISTER2(Select::SelectUnion<Gecode::Set::SetView, Gecode::Set::SetView>);
00125     GECODE_REGISTER1(Select::SelectDisjoint);
00126     GECODE_REGISTER2(Select::SelectUnionConst<Gecode::Set::SetView, Gecode::Set::SingletonView>);
00127     GECODE_REGISTER2(Select::SelectUnionConst<Gecode::Set::SetView, Gecode::Set::SetView>);
00128     GECODE_REGISTER2(Select::SelectIntersection<Gecode::Set::SetView, Gecode::Set::SetView>);
00129     
00130   }
00131   
00132 }
00133 
00134 // STATISTICS: set-post
00135