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/*****************************************************************[implicative.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
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
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*****************************************************************************/
#ifndef implicative
#define implicative
//plop
#include <iostream>
#include <cstdlib>
#include "minimodel.hh"
#include "warner.hh"
#include "qecore.hh"
#include "myspace.hh"

using namespace Gecode;
using namespace std;
using namespace Gecode::Int;


class Implicative : public QSpace {
    friend class valueHeuristic;

protected : 
  bool* q;                
  int nbSpaces;           
  int currentDeclareSpace;
  int* nbVarBySpace;      
  int* whichSpaceOwns;    
  MySpace** rules;        
  MySpace* goal;          
  bool* varInitialised;   
  bool* ruleDefined;      
  int* ruleStatus;        
  bool goalDefined;       
  int goalStatus;         
  Warner* w;
  int prop_power;         

  int cascade(int firstSpace, unsigned long int& propsteps);

public : 

  Implicative(int ns,bool firstQ,int* nv, int prop); 

  Implicative(Implicative& im);

  virtual ~Implicative();

  int spaces();

  void QIntVar(int var,int min,int max);

  void QIntVar(int var,IntSet dom);

  void QBoolVar(int var,int min, int max);

  void QBoolVar(int var) {QBoolVar(var,0,1);}


  MySpace* getRuleSpace(int sp);


  MySpace* getGoalSpace();

  
  MySpace* space();


  IntVar var(int n); 


  BoolVar bvar(int n); 



  int nextScope();


  void makeStructure();

  virtual void print();
      
      
  virtual bool quantification(int v);
  virtual int status(int var,unsigned long int& propsteps);
  virtual int finalStatus(unsigned long int& propsteps);
  virtual bool subsumed(int var);
  virtual Implicative* clone(); 
  virtual void assign(int var,int** vals,int nbVals);
  virtual void remove(int var,int** vals,int nbVals);
//  virtual void infEqual(int var,int val);
//  virtual void sup(int var,int val);
  virtual void backtrack();
  virtual void indicateBranchingHeuristic(BranchingHeuristic* bh);
};


#endif

---