precede.hh

00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christopher Mears <Chris.Mears@monash.edu>
00005  *
00006  *  Contributing authors:
00007  *     Christian Schulte <schulte@gecode.org>
00008  *     Guido Tack <tack@gecode.org>
00009  *
00010  *  Copyright:
00011  *     Christopher Mears, 2011
00012  *     Christian Schulte, 2011
00013  *     Guido Tack, 2011
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 #ifndef __GECODE_SET_PRECEDE_HH__
00041 #define __GECODE_SET_PRECEDE_HH__
00042 
00043 #include <gecode/set.hh>
00044 
00050 namespace Gecode { namespace Set { namespace Precede {
00051 
00062   template<class View>
00063   class Single : public NaryPropagator<View,PC_SET_NONE> {
00064   protected:
00065     using NaryPropagator<View,PC_SET_NONE>::x;
00067     class Index : public Advisor {
00068     public:
00070       int i;
00072       Index(Space& home, Propagator& p, Council<Index>& c, int i);
00074       Index(Space& home, Index& a);
00075     };
00077     Council<Index> c;
00079     int s, t;
00081     int alpha, beta, gamma;
00083     ExecStatus updateAlpha(Space& home);
00085     ExecStatus updateBeta(Space& home);
00087     Single(Home home, ViewArray<View>& x, int s, int t, int beta, int gamma);
00089     Single(Space& home, Single<View>& p);
00090   public:
00092     virtual Propagator* copy(Space& home);
00094     virtual PropCost cost(const Space&, const ModEventDelta&) const;
00096     virtual void reschedule(Space& home);
00098     virtual size_t dispose(Space& home);
00100     virtual ExecStatus advise(Space& home, Advisor& a, const Delta& d);
00102     virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
00104     static ExecStatus post(Home home, ViewArray<View>& x, int s, int t);
00105   };
00106 
00107 }}}
00108 
00109 #include <gecode/set/precede/single.hpp>
00110 
00111 #endif
00112 
00113 // STATISTICS: set-prop