001    /*
002     * Created on Dec 10, 2004
003     *
004     */
005    package aima.logic.propositional.parsing.ast;
006    
007    import java.util.Comparator;
008    
009    /**
010     * @author Ravi Mohan
011     * 
012     */
013    
014    public class SymbolComparator implements Comparator {
015    
016            public int compare(Object symbol1, Object symbol2) {
017                    Symbol one = (Symbol) symbol1;
018                    Symbol two = (Symbol) symbol2;
019                    return one.getValue().compareTo(two.getValue());
020            }
021    
022    }