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/*********************************************************[valueheuristic.hh]
Copyright (c) 2007, Universite d'Orleans - Jeremie Vautard, Marco Benedetti,
Arnaud Lallouet.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
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*****************************************************************************/


#ifndef VALUEHEUR
#define VALUEHEUR
#include "implicative.hh";
using namespace Gecode;
using namespace Gecode::Int;
using namespace std;


class valueHeuristic {
    friend class Implicative;
protected :
    int whichSpaceOwns(Implicative* imp,int var) {
        return imp->whichSpaceOwns[var];
    }
    
    int nbSpaces(Implicative* imp) {
        return imp->nbSpaces;
    }
    
    IntVar* getVar(Implicative* imp,int scope,int var) {
        if (scope<imp->nbSpaces) {
            if (imp->ruleDefined[scope]) 
                return &(imp->rules[scope]->v[var]);
            else 
                return NULL;
        }
        else {
            if (imp->goalDefined) 
                return &(imp->goal->v[var]);
            else 
                return NULL;
        }
    }
    
    bool scopeDefined(Implicative* imp,int scope) {
        if (scope == imp->nbSpaces) return imp->goalDefined;
        else return imp->ruleDefined[scope];
    }
    
public :
    virtual int** subSet(Implicative* home,int var,int* nbRanges)=0;
};





#endif

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