VariableNode.java

/* 
** Author(s): Miguel Calejo
** Contact:   interprolog@declarativa.com, http://www.declarativa.com
** Copyright (C) Declarativa, Portugal, 2000-2002
** Use and distribution, without any warranties, under the terms of the 
** GNU Library General Public License, readable in http://www.fsf.org/copyleft/lgpl.html
*/
package com.declarativa.interprolog.util;
import java.io.Serializable;
import com.declarativa.interprolog.*;
public class VariableNode implements Serializable{
        Integer number;
        public static ObjectExamplePair example(){
                return new ObjectExamplePair("VariableNode",
                        new VariableNode(1),
                        new VariableNode(2)
                        );
        }
        VariableNode(int n){
                number = new Integer(n);
        }
        
        public String toString(){
                return "Var"+number;
        }
        public boolean equals(Object x){
                return (x.getClass()==getClass() && number.equals( ((VariableNode)x).number ));
        }
}

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