/* Soot - a J*va Optimization Framework
* Copyright (C) 2004 Ondrej Lhotak
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
package soot.util;
import java.util.*;
public class MapNumberer implements Numberer {
Map<Object, Integer> map = new HashMap<Object, Integer>();
ArrayList<Object> al = new ArrayList<Object>();
int nextIndex = 1;
public void add( Object o ) {
if( !map.containsKey(o) ) {
map.put( o, new Integer(nextIndex) );
al.add(o);
nextIndex++;
}
}
public Object get( long number ) {
return al.get((int) number);
}
public long get( Object o ) {
if( o == null ) return 0;
Integer i = map.get(o);
if( i == null ) throw new RuntimeException( "couldn't find "+o );
return i.intValue();
}
public int size() { return nextIndex-1; /*subtract 1 for null*/ }
public MapNumberer() { al.add(null); }
public boolean contains(Object o) { return map.containsKey(o); }
}