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distinct.hh

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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christian Schulte <schulte@gecode.org>
00005  *     Guido Tack <tack@gecode.org>
00006  *
00007  *  Contributing authors:
00008  *     Gabor Szokoli <szokoli@gecode.org>
00009  *
00010  *  Copyright:
00011  *     Christian Schulte, 2002
00012  *     Guido Tack, 2004
00013  *     Gabor Szokoli, 2003
00014  *
00015  *  Last modified:
00016  *     $Date: 2011-10-06 17:27:42 +0200 (Thu, 06 Oct 2011) $ by $Author: schulte $
00017  *     $Revision: 12423 $
00018  *
00019  *  This file is part of Gecode, the generic constraint
00020  *  development environment:
00021  *     http://www.gecode.org
00022  *
00023  *  Permission is hereby granted, free of charge, to any person obtaining
00024  *  a copy of this software and associated documentation files (the
00025  *  "Software"), to deal in the Software without restriction, including
00026  *  without limitation the rights to use, copy, modify, merge, publish,
00027  *  distribute, sublicense, and/or sell copies of the Software, and to
00028  *  permit persons to whom the Software is furnished to do so, subject to
00029  *  the following conditions:
00030  *
00031  *  The above copyright notice and this permission notice shall be
00032  *  included in all copies or substantial portions of the Software.
00033  *
00034  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00035  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00036  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00037  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00038  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00039  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00040  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00041  *
00042  */
00043 
00044 #ifndef __GECODE_INT_DISTINCT_HH__
00045 #define __GECODE_INT_DISTINCT_HH__
00046 
00047 #include <gecode/int.hh>
00048 
00049 #include <gecode/int/view-val-graph.hh>
00050 #include <gecode/int/rel.hh>
00051 
00057 namespace Gecode { namespace Int { namespace Distinct {
00058 
00067   template<class View>
00068   class Val : public NaryPropagator<View,PC_INT_VAL> {
00069   protected:
00070     using NaryPropagator<View,PC_INT_VAL>::x;
00071 
00073     Val(Home home, ViewArray<View>& x);
00075     Val(Space& home, bool share, Val<View>& p);
00076   public:
00078     virtual Actor*     copy(Space& home, bool share);
00080     virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
00082     static ExecStatus post(Home home, ViewArray<View>& x);
00083   };
00084 
00098   template<class View, bool complete>
00099   ExecStatus prop_val(Space& home, ViewArray<View>&);
00100 
00101 
00102 
00128   template<class View>
00129   class Bnd : public Propagator {
00130   protected:
00132     ViewArray<View> x;
00134     ViewArray<View> y;
00136     int min_x;
00138     int max_x;
00140     Bnd(Home home, ViewArray<View>& x);
00142     Bnd(Space& home, bool share, Bnd<View>& p);
00143   public:
00145     static ExecStatus post(Home home, ViewArray<View>& x);
00147     virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
00154     virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
00156     virtual Actor* copy(Space& home, bool share);
00158     virtual size_t dispose(Space& home);
00159   };
00160 
00169   template<class View>
00170   ExecStatus prop_bnd(Space& home, ViewArray<View>& x, int& min_x, int& max_x);
00171 
00180   template<class View>
00181   ExecStatus prop_bnd(Space& home, ViewArray<View>& x);
00182 
00183 
00185   template<class View>
00186   class Graph : public ViewValGraph::Graph<View> {
00187   public:
00188     using ViewValGraph::Graph<View>::view;
00189     using ViewValGraph::Graph<View>::n_view;
00190     using ViewValGraph::Graph<View>::val;
00191     using ViewValGraph::Graph<View>::n_val;
00192     using ViewValGraph::Graph<View>::count;
00193     using ViewValGraph::Graph<View>::scc;
00194     using ViewValGraph::Graph<View>::match;
00196     Graph(void);
00198     ExecStatus init(Space& home, ViewArray<View>& x);
00200     bool mark(Space& home);
00202     ExecStatus prune(Space& home, bool& assigned);
00204     bool sync(Space& home);
00205   };
00206 
00217   template<class View>
00218   class DomCtrl {
00219   protected:
00221     Graph<View> g;
00222   public:
00224     DomCtrl(void);
00226     bool available(void);
00228     ExecStatus init(Space& home, ViewArray<View>& x);
00230     ExecStatus sync(Space& home);
00232     ExecStatus propagate(Space& home, bool& assigned);
00233   };
00234 
00250   template<class View>
00251   class Dom : public NaryPropagator<View,PC_INT_DOM> {
00252   protected:
00253     using NaryPropagator<View,PC_INT_DOM>::x;
00255     DomCtrl<View> dc;
00257     Dom(Space& home, bool share, Dom<View>& p);
00259     Dom(Home home, ViewArray<View>& x);
00260   public:
00262     virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
00269     virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
00271     virtual Actor* copy(Space& home, bool share);
00273     static ExecStatus post(Home home, ViewArray<View>& x);
00274   };
00275 
00282   template<class View>
00283   class TerDom : public TernaryPropagator<View,PC_INT_DOM> {
00284   protected:
00285     using TernaryPropagator<View,PC_INT_DOM>::x0;
00286     using TernaryPropagator<View,PC_INT_DOM>::x1;
00287     using TernaryPropagator<View,PC_INT_DOM>::x2;
00288 
00290     TerDom(Space& home, bool share, TerDom<View>& p);
00292     TerDom(Home home, View x0, View x1, View x2);
00293   public:
00295     virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
00297     virtual Actor* copy(Space& home, bool share);
00299     static  ExecStatus post(Home home, View x0, View x1, View x2);
00300   };
00301 
00302 }}}
00303 
00304 #include <gecode/int/distinct/val.hpp>
00305 #include <gecode/int/distinct/bnd.hpp>
00306 #include <gecode/int/distinct/ter-dom.hpp>
00307 #include <gecode/int/distinct/graph.hpp>
00308 #include <gecode/int/distinct/dom-ctrl.hpp>
00309 #include <gecode/int/distinct/dom.hpp>
00310 
00311 #endif
00312 
00313 // STATISTICS: int-prop
00314