/*
* This file is part of the Jikes RVM project (http://jikesrvm.org).
*
* This file is licensed to You under the Eclipse Public License (EPL);
* You may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.opensource.org/licenses/eclipse-1.0.php
*
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.
*/
package org.jikesrvm.compilers.opt.util;
/**
* An object that implements a bijection between whole numbers and
* objects.
*/
public interface BitSetMapping {
/**
* Return the object numbered n.
*/
Object getMappedObject(int n);
/**
* Return the number of a given object.
*/
int getMappedIndex(Object o);
/**
* Return the size of the domain of the bijection.
*/
int getMappingSize();
}