support-values.hh

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2008
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
 *
 *  Permission is hereby granted, free of charge, to any person obtaining
 *  a copy of this software and associated documentation files (the
 *  "Software"), to deal in the Software without restriction, including
 *  without limitation the rights to use, copy, modify, merge, publish,
 *  distribute, sublicense, and/or sell copies of the Software, and to
 *  permit persons to whom the Software is furnished to do so, subject to
 *  the following conditions:
 *
 *  The above copyright notice and this permission notice shall be
 *  included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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 */

#ifndef __GECODE_INT_SUPPORT_VALUES_HH__
#define __GECODE_INT_SUPPORT_VALUES_HH__

#include <gecode/int.hh>

namespace Gecode { namespace Int {

  template<class View, class A>
  class SupportValues {
  private:
    A& a;
    class RangePos {
    public:
      int min;          
      unsigned int pos; 
    };
    class Unsupported {
    private:
      RangePos* rp;
      unsigned int p;
      SupportValues& sv;
      void find(void);
    public:


      Unsupported(SupportValues& sv0);



      bool operator ()(void) const;
      void operator ++(void);



      int val(void) const;
    };

    View x;
    Gecode::Support::BitSetBase bs;
    RangePos* rp_fst;
    RangePos* rp_lst;
    RangePos* rp;
    int v;
    int max;

    bool _support(int n);
  public:
    SupportValues(A& a, View x);
    ~SupportValues(void);



    void reset(void);
    bool operator ()(void) const;
    void operator ++(void);



    int val(void) const;



    void support(void);
    bool support(int n);
    bool support(long long int n);
    ModEvent tell(Space& home);
  };

}}

#include <gecode/int/support-values.hpp>

#endif

// STATISTICS: int-prop