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 */
013package org.jikesrvm.compilers.opt.dfsolver;
014
015/**
016 * Represents a function for DF_LatticeCell values.
017 */
018public abstract class DF_Operator {
019
020  /**
021   * Evaluate this equation, setting a new value for the
022   * left-hand side.
023   *
024   * @param operands The operands for this operator.  operands[0]
025   *                is the left-hand side.
026   * @return true if the lhs value changes. false otherwise.
027   */
028  public abstract boolean evaluate(DF_LatticeCell[] operands);
029}
030
031
032