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bab.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  *
00006  *  Contributing authors:
00007  *     Guido Tack <tack@gecode.org>
00008  *
00009  *  Copyright:
00010  *     Christian Schulte, 2004
00011  *     Guido Tack, 2004
00012  *
00013  *  This file is part of Gecode, the generic constraint
00014  *  development environment:
00015  *     http://www.gecode.org
00016  *
00017  *  Permission is hereby granted, free of charge, to any person obtaining
00018  *  a copy of this software and associated documentation files (the
00019  *  "Software"), to deal in the Software without restriction, including
00020  *  without limitation the rights to use, copy, modify, merge, publish,
00021  *  distribute, sublicense, and/or sell copies of the Software, and to
00022  *  permit persons to whom the Software is furnished to do so, subject to
00023  *  the following conditions:
00024  *
00025  *  The above copyright notice and this permission notice shall be
00026  *  included in all copies or substantial portions of the Software.
00027  *
00028  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00029  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00030  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00031  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00032  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00033  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00034  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00035  *
00036  */
00037 
00038 #ifndef __GECODE_SEARCH_SEQ_BAB_HH__
00039 #define __GECODE_SEARCH_SEQ_BAB_HH__
00040 
00041 #include <gecode/search.hh>
00042 #include <gecode/search/support.hh>
00043 #include <gecode/search/worker.hh>
00044 #include <gecode/search/seq/path.hh>
00045 
00046 namespace Gecode { namespace Search { namespace Seq {
00047 
00049   template<class Tracer>
00050   class BAB : public Worker {
00051   private:
00053     Tracer tracer;
00055     Options opt;
00057     Path<Tracer> path;
00059     Space* cur;
00061     unsigned int d;
00063     int mark;
00065     Space* best;
00066   public:
00068     BAB(Space* s, const Options& o);
00070     Space* next(void);
00072     Statistics statistics(void) const;
00074     void constrain(const Space& b);
00076     void reset(Space* s);
00078     NoGoods& nogoods(void);
00080     ~BAB(void);
00081   };
00082 
00083 }}}
00084 
00085 #include <gecode/search/seq/bab.hpp>
00086 
00087 #endif
00088 
00089 // STATISTICS: search-seq