statesCounter.h

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/***************************************************************************
 *   Copyright (C) 2005 by Christophe GONZALES and Pierre-Henri WUILLEMIN  *
 *   {prenom.nom}_at_lip6.fr                                               *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
// =========================================================================
#ifndef GUM_STATES_COUNTER_H
#define GUM_STATES_COUNTER_H
// =========================================================================
#include <agrum/core/sequence.h>
// =========================================================================
#include <agrum/FMDP/learning/datastructure/IVisitableGraphLearner.h>
// =========================================================================
#include <agrum/multidim/implementations/multiDimFunctionGraph.h>
// =========================================================================

namespace gum {


  class StatesCounter : public IVisitableGraphLearner {
    public:
    // ==========================================================================
    // ==========================================================================

    StatesCounter();

    ~StatesCounter();


    // ==========================================================================
    // ==========================================================================

    void incState(const Instantiation&);

    void reset(const Instantiation&);

    const MultiDimFunctionGraph< int >* counter();



    // ###################################################################
    // ###################################################################
    public:
    // ==========================================================================
    // ==========================================================================
    NodeId root() const { return __counter->root(); }

    // ==========================================================================
    // ==========================================================================
    bool isTerminal(NodeId ni) const { return __counter->isTerminalNode(ni); }

    // ==========================================================================
    // ==========================================================================
    const DiscreteVariable* nodeVar(NodeId ni) const {
      return __counter->node(ni)->nodeVar();
    }

    // ==========================================================================
    // ==========================================================================
    NodeId nodeSon(NodeId ni, Idx modality) const {
      return __counter->node(ni)->son(modality);
    }

    // ==========================================================================
    // ==========================================================================
    Idx nodeNbObservation(NodeId ni) const { return __counter->nodeValue(ni); }

    void insertSetOfVars(MultiDimFunctionGraph< double >* ret) const {
      for (SequenceIteratorSafe< const DiscreteVariable* > varIter =
              __counter->variablesSequence().beginSafe();
           varIter != __counter->variablesSequence().endSafe();
           ++varIter)
        ret->add(**varIter);
    }



    private:
    void __incState(const Instantiation&, NodeId, Idx, Size);

    MultiDimFunctionGraph< Size >* __counter;

    Set< Instantiation* > __visitedStates;
  };
} /* namespace gum */

#endif   // GUM_STATES_COUNTER_H