Source: operator.h

/*  operator.h - 
    This file is part of Kalamaris
    Copyright (C) 2000  Antonio Larrosa Jimenez
    Kalamaris' homepage : http://www.arrakis.es/~rlarrosa/kalamaris.html

    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., 675 Mass Ave, Cambridge, MA 02139, USA. 

    Send comments and bug fixes to Antonio Larrosa <larrosa@kde.org>

 ***************************************************************************/
#include "map.h"

class Operator : public Map
{
/**
 * Operator : '+' , '-' , '*' , '/' , '^'
 */
  char op;

  Map *tree1;
  Map *tree2;

public:
  Operator(char _op, const QString &t1, const QString &t2);
  Operator(char _op, Map *_m1, Map *_m2);
  virtual ~Operator();

  virtual Map *copy(void); 

  virtual Map *eval (const QDict <Map> &vars);
  virtual Map *derive(const Variable &, const QDict <Map> &vars);

  virtual QString string(void) const;

  virtual void propagateForceEvaluation( bool b=true );
  virtual Map *simplify(void);
    
  /**
    * Calculates the addition,substraction, multiplication or division
    * (depends on the operator _op), of _m1 and _m2.
    * The diference between this method and a new Operator instance is that
    * this method first checks if both _m1 and _m2 are constant and then
    * just returns a new Constant object instead of an Operator.
    */
//  static Map * calc(char _op, Map *_m1, Map *_m2);

};