/* 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;
/** A numberer converts objects to unique non-negative integers, and vice-versa.
* @author xiao, generalize the interface
*/
public interface Numberer<E> {
/** Tells the numberer that a new object needs to be assigned a number. */
public void add( E o );
/** Should return the number that was assigned to object o that was
* previously passed as an argument to add().
*/
public long get( E o );
/** Should return the object that was assigned the number number. */
public E get( long number );
/** Should return the number of objects that have been assigned numbers. */
public int size();
}