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wims  3.65+svn20090927
UnaryMinus.java
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00001 /*
00002 $Id: UnaryMinus.java,v 1.3 2003/02/18 11:48:47 sander Exp $
00003 */
00004 
00005 
00006 /*
00007 Copyright (C) 2001-2002 Mainline Project (I3S - ESSI - CNRS -UNSA)
00008 
00009 This library is free software; you can redistribute it and/or
00010 modify it under the terms of the GNU Lesser General Public
00011 License as published by the Free Software Foundation; either
00012 version 2.1 of the License, or (at your option) any later version.
00013 
00014 This library is distributed in the hope that it will be useful,
00015 but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017 Lesser General Public License for more details.
00018 
00019 You should have received a copy of the GNU Lesser General Public
00020 License along with this library; if not, write to the Free Software
00021 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 
00023 For further information on the GNU Lesser General Public License,
00024 see: http://www.gnu.org/copyleft/lesser.html
00025 For further information on this library, contact: mainline@essi.fr
00026 */
00027 
00028 
00029 package fr.ove.openmath.jome.model;
00030 
00031 import java.util.*;
00032 import fr.ove.openmath.jome.model.FormulaTreeStructure;
00033 import fr.ove.openmath.jome.model.events.ModelEvent;
00034 
00044 public class UnaryMinus extends UnaryOperator {
00048     public UnaryMinus() {
00049         setResourceIdentifier("UNARYMINUS");
00050         setValue("-");
00051         setAsOperatorPriority(resourcesManager.getAsOperatorPriority("unaryMinusPriorities"));
00052         setAsOperandPriority(resourcesManager.getAsOperandPriority("unaryMinusPriorities"));
00053     }
00054     
00062     public FormulaTreeStructure insert(FormulaTreeStructure current) {
00063         // Le seul moment où l'on fait appel à cet opérateur, c'est pour la saisie d'une
00064         // soustaction ou d'un moins unaire, et donc où l'on a une instance de Addition qui est en fait notre
00065         // point d'insertion courant, i.e. current.
00066         // On peut ajouter l'instance courante telle qu'elle.
00067         current.addChild(this);
00068         
00069         // On insère notre template dans le FTS
00070         VariableOrNumber template = new VariableOrNumber();
00071         addChild(template);
00072 
00073         // On retourne la reférence de notre dernier point d'insertion.
00074         return template;
00075     }
00076 }
00077