soot.tagkit.TagAggregator Maven / Gradle / Ivy
package soot.tagkit;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 2000 Patrice Pominville and Feng Qian
* %%
* 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.Iterator;
import java.util.LinkedList;
import java.util.Map;
import soot.Body;
import soot.BodyTransformer;
import soot.Unit;
import soot.baf.BafBody;
/** Interface to aggregate tags of units. */
public abstract class TagAggregator extends BodyTransformer {
/** Decide whether this tag should be aggregated by this aggregator. */
public abstract boolean wantTag(Tag t);
/** Aggregate the given tag assigned to the given unit */
public abstract void considerTag(Tag t, Unit u, LinkedList tags, LinkedList units);
/** Return name of the resulting aggregated tag. */
public abstract String aggregatedName();
protected void internalTransform(Body b, String phaseName, Map options) {
BafBody body = (BafBody) b;
LinkedList tags = new LinkedList();
LinkedList units = new LinkedList();
/* aggregate all tags */
for (Iterator unitIt = body.getUnits().iterator(); unitIt.hasNext();) {
final Unit unit = unitIt.next();
for (Iterator tagIt = unit.getTags().iterator(); tagIt.hasNext();) {
final Tag tag = tagIt.next();
if (wantTag(tag)) {
considerTag(tag, unit, tags, units);
}
}
}
if (units.size() > 0) {
b.addTag(new CodeAttribute(aggregatedName(), new LinkedList(units), new LinkedList(tags)));
}
fini();
}
/** Called after all tags for a method have been aggregated. */
public void fini() {
}
}