Beispiel #1
0
  public static boolean maybeSameLocation(Value v1, Value v2) {
    if (!(v1 instanceof InstanceFieldRef && v2 instanceof InstanceFieldRef)
        && !(v1 instanceof ArrayRef && v2 instanceof ArrayRef)) {
      return v1.equivTo(v2);
    }
    if (v1 instanceof InstanceFieldRef && v2 instanceof InstanceFieldRef) {
      InstanceFieldRef ifr1 = (InstanceFieldRef) v1;
      InstanceFieldRef ifr2 = (InstanceFieldRef) v2;
      if (!ifr1.getField().getName().equals(ifr2.getField().getName())) return false;

      Local base1 = (Local) ifr1.getBase();
      Local base2 = (Local) ifr2.getBase();
      PointsToAnalysis pta = Scene.v().getPointsToAnalysis();
      PointsToSet pts1 = pta.reachingObjects(base1);
      PointsToSet pts2 = pta.reachingObjects(base2);
      return pts1.hasNonEmptyIntersection(pts2);
    } else { // v1 instanceof ArrayRef && v2 instanceof ArrayRef
      ArrayRef ar1 = (ArrayRef) v1;
      ArrayRef ar2 = (ArrayRef) v2;

      Local base1 = (Local) ar1.getBase();
      Local base2 = (Local) ar2.getBase();
      PointsToAnalysis pta = Scene.v().getPointsToAnalysis();
      PointsToSet pts1 = pta.reachingObjects(base1);
      PointsToSet pts2 = pta.reachingObjects(base2);
      return pts1.hasNonEmptyIntersection(pts2);
    }
  }
Beispiel #2
0
  private int numMatchArgs(int numFormals, UnchangedParamsAnalysis mrpa, Stmt s) {
    FlowSet before = (FlowSet) mrpa.getFlowBefore(s);

    List args = ((InvokeExpr) s.getInvokeExpr()).getArgs();
    int matchArg = 0;
    for (int i = 0; i < numFormals; i++) {
      Value arg = (Value) args.get(i);
      for (Iterator rppIt = before.iterator(); rppIt.hasNext(); ) {
        IDValuePair rpp = (IDValuePair) rppIt.next();
        if (rpp.groupID == i && arg.equivTo(rpp.value)) {
          matchArg++;
          break;
        }
      }
    }
    return matchArg;
  }