/* Soot - a J*va Optimization Framework * Copyright (C) 2004 Jennifer 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. */ /* * Modified by the Sable Research Group and others 1997-1999. * See the 'credits' file distributed with Soot for the complete list of * contributors. (Soot is distributed at http://www.sable.mcgill.ca/soot) */ package soot.jimple.toolkits.scalar; import soot.*; import soot.toolkits.graph.*; /** Implements an available expressions analysis on local variables. * pessimistic analysis - for teaching 621*/ public class PessimisticAvailableExpressionsAnalysis extends SlowAvailableExpressionsAnalysis { public PessimisticAvailableExpressionsAnalysis(DirectedGraph dg, SootMethod m, SideEffectTester st){ super(dg); } protected Object newInitialFlow() { Object newSet = emptySet.clone(); //((ToppedSet)newSet).setTop(true); return newSet; } }