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support-values.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  *  Copyright:
00007  *     Christian Schulte, 2008
00008  *
00009  *  This file is part of Gecode, the generic constraint
00010  *  development environment:
00011  *     http://www.gecode.org
00012  *
00013  *  Permission is hereby granted, free of charge, to any person obtaining
00014  *  a copy of this software and associated documentation files (the
00015  *  "Software"), to deal in the Software without restriction, including
00016  *  without limitation the rights to use, copy, modify, merge, publish,
00017  *  distribute, sublicense, and/or sell copies of the Software, and to
00018  *  permit persons to whom the Software is furnished to do so, subject to
00019  *  the following conditions:
00020  *
00021  *  The above copyright notice and this permission notice shall be
00022  *  included in all copies or substantial portions of the Software.
00023  *
00024  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00025  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00026  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00027  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00028  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00029  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00030  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00031  *
00032  */
00033 
00034 #ifndef __GECODE_INT_SUPPORT_VALUES_HH__
00035 #define __GECODE_INT_SUPPORT_VALUES_HH__
00036 
00037 #include <gecode/int.hh>
00038 
00039 namespace Gecode { namespace Int {
00040 
00047   template<class View, class A>
00048   class SupportValues {
00049   private:
00051     A& a;
00053     class RangePos {
00054     public:
00055       int min;          
00056       unsigned int pos; 
00057     };
00059     class Unsupported {
00060     private:
00062       RangePos* rp;
00064       unsigned int p;
00066       SupportValues& sv;
00068       void find(void);
00069     public:
00071 
00072 
00073       Unsupported(SupportValues& sv0);
00075 
00077 
00078 
00079       bool operator ()(void) const;
00081       void operator ++(void);
00083 
00085 
00086 
00087       int val(void) const;
00089     };
00090 
00092     View x;
00094     Gecode::Support::BitSetBase bs;
00096     RangePos* rp_fst;
00098     RangePos* rp_lst;
00100     RangePos* rp;
00102     int v;
00104     int max;
00105 
00107     bool _support(int n);
00108   public:
00110     SupportValues(A& a, View x);
00112     ~SupportValues(void);
00113 
00115 
00116 
00117     void reset(void);
00119     bool operator ()(void) const;
00121     void operator ++(void);
00123 
00125 
00126 
00127     int val(void) const;
00129 
00131 
00132 
00133     void support(void);
00135     bool support(int n);
00137     bool support(long long int n);
00139     ModEvent tell(Space& home);
00141   };
00142 
00143 }}
00144 
00145 #include <gecode/int/support-values.hpp>
00146 
00147 #endif
00148 
00149 // STATISTICS: int-prop
00150