Ejemplo n.º 1
0
 public boolean add(T o) {
   boolean added = true;
   elements.add(o);
   while (size() > capacity()) {
     Object dumped = elements.extractMin();
     if (dumped.equals(o)) {
       added = false;
     }
   }
   return added;
 }
Ejemplo n.º 2
0
 public List<T> asSortedList() {
   LinkedList<T> list = new LinkedList<T>();
   for (Iterator<T> i = elements.iterator(); i.hasNext(); ) {
     list.addFirst(i.next());
   }
   return list;
 }
Ejemplo n.º 3
0
  public static void main(String[] args) {
    try {
      JSObject js1 = new JSObject();
      JSObject js2 = new JSObject();
      JSObject js3 = new JSObject();

      js1.put("x", new ObjectValue("Y"));

      js2.put(new String("a"), new SecurityType(SecurityType.high, null));
      js2.put(new String("u"), null);

      js3.put(new String("b"), null);

      // Testing the alloc function
      Heap h = new Heap();
      Location l0 = h.alloc(Location.generateLocString(), js1);
      Location l1 = h.alloc("0", js1);
      Location l2 = h.alloc("10", js2);
      System.out.println("loc 1: " + l1);
      System.out.println("loc 2: " + l2);
      System.out.println("Heap : " + h);

      Heap h0 = h.deepClone();
      Heap h1 = h.clone();
      // Location l3 = h.alloc("5", js3);

      System.out.println("Heap comparison: " + h.equals(h0));
      System.out.println("Heap comparison: " + h.equals(h1));
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
Ejemplo n.º 4
0
  public boolean isomorphic(Heap other) {
    if (this == other) return true;
    if (other == null) return false;
    if (getClass() != other.getClass()) return false;

    if (heap == null) {
      if (other.heap != null) return false;
    } else {
      if (heap.size()
          != other.getSize()) { // if the size of both the maps is not the same, then return false
        return false;
      } else { // keyset sizes match
        // less optimization
        // return checkHeapObjectEquality(other);

        // max optimization
        return checkContentEquality(other, this.getGlobal(), other.getGlobal());
      }
    }
    return true;
  }
Ejemplo n.º 5
0
 /**
  * @param other
  * @return
  */
 private boolean checkHeapObjectEquality(Heap other) {
   Set<Location> this_keyset = this.getKeySet();
   Set<Location> other_keyset = other.getKeySet();
   if (this_keyset != null && other_keyset != null) {
     if (this_keyset.containsAll(other_keyset)
         && other_keyset.containsAll(
             this_keyset)) { // check if both the keysets have the same keys
       // If true, compare value sets
       boolean retval = true;
       for (Location key : this_keyset) {
         JSObject this_value = this.get(key);
         JSObject other_value = other.get(key);
         retval = retval && (this_value.isomorphic(other_value));
       }
       return retval;
     } else {
       // If false, the maps don't match
       return false;
     }
   } else {
     if (this_keyset == null && other_keyset == null) return true;
     else return false;
   }
 }
Ejemplo n.º 6
0
  public static void main(String[] args) {
    Heap<String> h = new Heap<String>();

    h.insert("p");
    h.insert("r");
    h.insert("i");
    h.insert("o");
    System.out.println(h);
    h.deleteMin();
    System.out.println(h);

    Heap<Integer> tmp = new Heap<Integer>();
    Integer[] a = {4, 7, 7, 7, 5, 0, 2, 3, 5, 1};
    tmp.heapSort(a);
    System.out.println(Arrays.toString(a));
  }
Ejemplo n.º 7
0
  /**
   * Create a deep clone of the heap and return it
   *
   * @return
   */
  public Heap deepClone() {
    Heap hp = new Heap();
    if (this.heap == null) {
      hp.setHeap(null);
      return hp;
    }

    // set the clone global element
    hp.setGlobal(this.getGlobal());

    Set<Location> keys = this.getKeySet();
    for (Location key : keys) {
      JSObject old_ov = this.get(key);
      // create a deep clone of the old object value
      JSObject new_ov = old_ov.deepClone();
      hp.put(key, new_ov);
    }

    hp.setStrValueMap((HashMap<String, Location>) this.strValueMap.clone());
    hp.setDummyObjectMap((HashMap<String, Location>) this.dummyObjectMap.clone());

    return hp;
  }
Ejemplo n.º 8
0
 public int size() {
   return elements.size();
 }
Ejemplo n.º 9
0
  /**
   * Recursive function to check if the JSObjects in both the heaps match
   *
   * @param other
   * @param this_global
   * @param other_global
   * @return
   */
  private boolean checkContentEquality(Heap other, Location this_obj, Location other_obj) {
    JSObject curr_obj = this.get(this_obj);
    JSObject test_obj = other.get(other_obj);

    if (curr_obj == null && test_obj == null) return true;

    if ((curr_obj != null && test_obj == null) || (curr_obj == null && test_obj != null))
      return false;

    SecurityType curr_taint = (SecurityType) curr_obj.get("at_Taint");
    SecurityType test_taint = (SecurityType) test_obj.get("at_Taint");

    // Proceed further only if the JSObject taints match
    if (curr_taint.equals(test_taint)) {
      // If the location is a dummy object, it suffices to just check the taints
      if (other.isDummy(other_obj) && this.isDummy(this_obj)) {
        return true;
      }

      Set<String> this_keyset = curr_obj.getKeySet();
      Set<String> other_keyset = test_obj.getKeySet();
      // Proceed further only if the keys in both the JSObjects match
      if (this_keyset.containsAll(other_keyset) && other_keyset.containsAll(this_keyset)) {
        // For each key compare the object values
        boolean retval = true;
        for (String key : this_keyset) {
          // we don't want to go into libraryProperties as they will lead to the parents
          // creating a circular check and infinite recursion
          if (ProgramAnalyzerC.libraryProperties.contains(key)) continue;
          if (key.equals("at_Taint")) // we already compared taints
          continue;
          ObjectValue this_val = curr_obj.get(key);
          ObjectValue other_val = test_obj.get(key);

          if (this_val == null && other_val == null) {
            continue;
          }

          if ((this_val == null && other_val != null) || (this_val != null && other_val == null)) {
            retval = false;
            return retval;
          }

          if (this_val.getClass() != other_val.getClass()) {
            retval = false; // If the class types don't match
            return retval;
          }

          if (this_val instanceof Location)
            retval =
                retval && checkContentEquality(other, (Location) this_val, (Location) other_val);
          if (this_val instanceof FunctionValue)
            retval = retval && ((FunctionValue) this_val).equals((FunctionValue) other_val);
          if (this_val instanceof ObjectValue) retval = retval && this_val.equals(other_val);

          if (retval == false) return false;
        }
        return retval;
      }
    }

    return false;
  }
Ejemplo n.º 10
0
 /**
  * This main program is started like this:
  *
  * <p>java HeapStuff X V0 V1 V2 V3 ...
  *
  * <p>It puts the strings Vi into a heap, and then prints out all values that are >= X (String
  * comparison).
  */
 public static void main(String[] args) {
   Heap<String> H = new Heap<String>();
   for (int i = 0; i < args.length; i += 1) H.add(args[i]);
   H.printLarger(args[0]);
 }