moTSMoveLoopExpl.h

// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-

// "moTSMoveLoopExpl.h"

// (c) OPAC Team, LIFL, 2003-2006

/* LICENCE TEXT
   
   Contact: paradiseo-help@lists.gforge.inria.fr
*/

#ifndef __moTSMoveLoopExpl_h
#define __moTSMoveLoopExpl_h

#include "moMoveLoopExpl.h"

#include "moMoveInit.h"
#include "moNextMove.h"
#include "moMoveIncrEval.h"
#include "moMoveSelect.h"

#include "moTabuList.h"
#include "moAspirCrit.h"
#include "moBestImprSelect.h"


template < class M > class moTSMoveLoopExpl:public moMoveLoopExpl < M >
{

  typedef typename M::EOType EOT;

  typedef typename M::EOType::Fitness Fitness;

public:


moTSMoveLoopExpl (moMoveInit < M > &__move_init, moNextMove < M > &__next_move, moMoveIncrEval < M > &__incr_eval, moTabuList < M > &__tabu_list, moAspirCrit < M > &__aspir_crit):
  move_init (__move_init),
    next_move (__next_move),
    incr_eval (__incr_eval),
    tabu_list (__tabu_list), aspir_crit (__aspir_crit)
  {

    tabu_list.init ();
    aspir_crit.init ();
  }


  void operator   () (const EOT & __old_sol, EOT & __new_sol)
  {

    M move;


    move_init (move, __old_sol);        /* Restarting the exploration of 
                                           of the neighborhood ! */

    move_select.init (__old_sol.fitness ());

    do
      {

        Fitness fit = incr_eval (move, __old_sol);

        if (!tabu_list (move, __old_sol) || aspir_crit (move, fit))
          {
            if (!move_select.update (move, fit))
              break;
          }

      }
    while (next_move (move, __old_sol));

    M best_move;

    Fitness best_move_fit;

    move_select (best_move, best_move_fit);

    __new_sol.fitness (best_move_fit);
    best_move (__new_sol);

    /* Removing moves that are
       no more tabu */
    tabu_list.update ();

    // Updating the tabu list
    tabu_list.add (best_move, __new_sol);
  }

private:

  moMoveInit < M > &move_init;

  moNextMove < M > &next_move;

  moMoveIncrEval < M > &incr_eval;

  moBestImprSelect < M > move_select;

  moTabuList < M > &tabu_list;

  moAspirCrit < M > &aspir_crit;
};

#endif

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