001    /*
002     *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003     *
004     *  This file is licensed to You under the Eclipse Public License (EPL);
005     *  You may not use this file except in compliance with the License. You
006     *  may obtain a copy of the License at
007     *
008     *      http://www.opensource.org/licenses/eclipse-1.0.php
009     *
010     *  See the COPYRIGHT.txt file distributed with this work for information
011     *  regarding copyright ownership.
012     */
013    package org.jikesrvm.compilers.opt.ir;
014    
015    import java.util.Enumeration;
016    
017    import org.jikesrvm.compilers.opt.ir.operand.RegisterOperand;
018    
019    /**
020     * Extend java.util.Enumeration to avoid downcasts from object.
021     */
022    public interface RegisterOperandEnumeration extends Enumeration<RegisterOperand> {
023      /** Same as nextElement but avoid the need to downcast from Object */
024      RegisterOperand next();
025    }
026