001    /*
002      Copyright (C) 2002 Laurent Martelli <laurent@aopsys.com>
003    
004      This program is free software; you can redistribute it and/or modify
005      it under the terms of the GNU Lesser General Public License as
006      published by the Free Software Foundation; either version 2 of the
007      License, or (at your option) any later version.
008    
009      This program is distributed in the hope that it will be useful,
010      but WITHOUT ANY WARRANTY; without even the implied warranty of
011      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012      GNU Lesser General Public License for more details.
013    
014      You should have received a copy of the GNU Lesser General Public License
015      along with this program; if not, write to the Free Software
016      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
017    
018    package org.objectweb.jac.util;
019    
020    import java.util.Arrays;
021    
022    
023    /**
024     * This utility class wraps an array of objects and defines an
025     * <code>hashCode()</code> and an <code>equals()</code>
026     */
027    
028    public class ObjectArray {
029        Object [] args;
030        public ObjectArray(Object[] args) {
031            this.args = args;
032        }
033        public Object[] getArray() {
034            return args;
035        }
036        public int hashCode() {
037            int result = 0;
038            for (int i=args.length-1; i>=0; i--) {
039                if (args[i]!=null)
040                    result = result ^ args[i].hashCode();
041            }
042            return result;
043        }
044        public boolean equals(Object o) {
045            return (o instanceof ObjectArray) 
046                && Arrays.equals(((ObjectArray)o).args,args);
047        }
048        public String toString() {
049            return Arrays.asList(args).toString();
050        }
051    }