예제 #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);
    }
  }
예제 #2
0
 public static boolean mayBaseAtSameLocation(Local base1, Local base2) {
   PointsToAnalysis pta = Scene.v().getPointsToAnalysis();
   PointsToSet pts1 = pta.reachingObjects(base1);
   PointsToSet pts2 = pta.reachingObjects(base2);
   return pts1.hasNonEmptyIntersection(pts2);
 }