soot.jimple.validation.JimpleTrapValidator Maven / Gradle / Ivy
package soot.jimple.validation;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 1997 - 1999 Raja Vallee-Rai
* %%
* 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.HashSet;
import java.util.List;
import java.util.Set;
import soot.Body;
import soot.Trap;
import soot.Unit;
import soot.jimple.CaughtExceptionRef;
import soot.jimple.IdentityStmt;
import soot.validation.BodyValidator;
import soot.validation.ValidationException;
/**
* This validator checks whether the jimple traps are correct. It does not perform the same checks as
* {@link soot.validation.TrapsValidator}
*
* @see JimpleTrapValidator#validate(Body, List)
* @author Marc Miltenberger
*/
public enum JimpleTrapValidator implements BodyValidator {
INSTANCE;
public static JimpleTrapValidator v() {
return INSTANCE;
}
/**
* Checks whether all Caught-Exception-References are associated to traps.
*/
@Override
public void validate(Body body, List exceptions) {
Set caughtUnits = new HashSet();
for (Trap trap : body.getTraps()) {
caughtUnits.add(trap.getHandlerUnit());
if (!(trap.getHandlerUnit() instanceof IdentityStmt)) {
exceptions.add(new ValidationException(trap, "Trap handler does not start with caught " + "exception reference"));
} else {
IdentityStmt is = (IdentityStmt) trap.getHandlerUnit();
if (!(is.getRightOp() instanceof CaughtExceptionRef)) {
exceptions.add(new ValidationException(trap, "Trap handler does not start with caught " + "exception reference"));
}
}
}
for (Unit u : body.getUnits()) {
if (u instanceof IdentityStmt) {
IdentityStmt id = (IdentityStmt) u;
if (id.getRightOp() instanceof CaughtExceptionRef) {
if (!caughtUnits.contains(id)) {
exceptions.add(new ValidationException(id, "Could not find a corresponding trap using this statement as handler",
"Body of method " + body.getMethod().getSignature() + " contains a caught exception reference,"
+ "but not a corresponding trap using this statement as handler"));
}
}
}
}
}
@Override
public boolean isBasicValidator() {
return true;
}
}