soot.jimple.toolkits.annotation.tags.ArrayNullTagAggregator Maven / Gradle / Ivy
package soot.jimple.toolkits.annotation.tags;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 2003 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.LinkedList;
import soot.G;
import soot.Singletons;
import soot.Unit;
import soot.baf.Inst;
import soot.tagkit.Tag;
import soot.tagkit.TagAggregator;
/** The aggregator for ArrayNullCheckAttribute. */
public class ArrayNullTagAggregator extends TagAggregator {
public ArrayNullTagAggregator(Singletons.Global g) {
}
public static ArrayNullTagAggregator v() {
return G.v().soot_jimple_toolkits_annotation_tags_ArrayNullTagAggregator();
}
public boolean wantTag(Tag t) {
return (t instanceof OneByteCodeTag);
}
@Override
public void considerTag(Tag t, Unit u, LinkedList tags, LinkedList units) {
Inst i = (Inst) u;
if (!(i.containsInvokeExpr() || i.containsFieldRef() || i.containsArrayRef())) {
return;
}
OneByteCodeTag obct = (OneByteCodeTag) t;
if (units.size() == 0 || units.getLast() != u) {
units.add(u);
tags.add(new ArrayNullCheckTag());
}
ArrayNullCheckTag anct = (ArrayNullCheckTag) tags.getLast();
anct.accumulate(obct.getValue()[0]);
}
public String aggregatedName() {
return "ArrayNullCheckAttribute";
}
}