soot.jimple.toolkits.annotation.AvailExprTagger Maven / Gradle / Ivy
package soot.jimple.toolkits.annotation;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 2003 Jennifer Lhotak
* %%
* This program 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 program 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 General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import java.util.Map;
import soot.Body;
import soot.BodyTransformer;
import soot.G;
import soot.PhaseOptions;
import soot.Scene;
import soot.SideEffectTester;
import soot.Singletons;
import soot.jimple.NaiveSideEffectTester;
import soot.jimple.toolkits.pointer.PASideEffectTester;
import soot.jimple.toolkits.scalar.PessimisticAvailableExpressionsAnalysis;
import soot.jimple.toolkits.scalar.SlowAvailableExpressionsAnalysis;
import soot.options.AETOptions;
import soot.toolkits.graph.ExceptionalUnitGraph;
/**
* A body transformer that records avail expression information in tags. - both pessimistic and optimistic options
*/
public class AvailExprTagger extends BodyTransformer {
public AvailExprTagger(Singletons.Global g) {
}
public static AvailExprTagger v() {
return G.v().soot_jimple_toolkits_annotation_AvailExprTagger();
}
protected void internalTransform(Body b, String phaseName, Map opts) {
SideEffectTester sideEffect;
if (Scene.v().hasCallGraph() && !PhaseOptions.getBoolean(opts, "naive-side-effect")) {
sideEffect = new PASideEffectTester();
} else {
sideEffect = new NaiveSideEffectTester();
}
sideEffect.newMethod(b.getMethod());
AETOptions options = new AETOptions(opts);
if (options.kind() == AETOptions.kind_optimistic) {
new SlowAvailableExpressionsAnalysis(new ExceptionalUnitGraph(b));
} else {
new PessimisticAvailableExpressionsAnalysis(new ExceptionalUnitGraph(b), b.getMethod(), sideEffect);
}
}
}