soot.validation.CheckInitValidator Maven / Gradle / Ivy
package soot.validation;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 1997 - 2018 Raja Vallée-Rai and others
* %%
* 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.List;
import soot.Body;
import soot.Local;
import soot.Unit;
import soot.Value;
import soot.ValueBox;
import soot.toolkits.exceptions.ThrowAnalysisFactory;
import soot.toolkits.graph.ExceptionalUnitGraph;
import soot.toolkits.scalar.FlowSet;
import soot.toolkits.scalar.InitAnalysis;
public enum CheckInitValidator implements BodyValidator {
INSTANCE;
public static CheckInitValidator v() {
return INSTANCE;
}
@Override
public void validate(Body body, List exception) {
ExceptionalUnitGraph g = new ExceptionalUnitGraph(body, ThrowAnalysisFactory.checkInitThrowAnalysis(), false);
InitAnalysis analysis = new InitAnalysis(g);
for (Unit s : body.getUnits()) {
FlowSet init = analysis.getFlowBefore(s);
for (ValueBox vBox : s.getUseBoxes()) {
Value v = vBox.getValue();
if (v instanceof Local) {
Local l = (Local) v;
if (!init.contains(l)) {
throw new ValidationException(s,
"Local variable $1 is not definitively defined at this point".replace("$1", l.getName()),
"Warning: Local variable " + l + " not definitely defined at " + s + " in " + body.getMethod(), false);
}
}
}
}
}
@Override
public boolean isBasicValidator() {
return false;
}
}