Comment changes (#6700)

dataflow/src/main/java/org/checkerframework/dataflow/analysis/AbstractAnalysis.java

@@ -468,7 +468,10 @@ protected boolean updateNodeValues(Node node, TransferResult<V, S> transferResul
    * @param b the block to add to {@link #worklist}
    */
   protected void addToWorklist(Block b) {
-    // TODO: use a more efficient way to check if b is already present
+    // TODO: This costs linear (!) time.  Use a more efficient way to check if b is already present.
+    // Two possibilities:
+    //  * add unconditionally, and detect duplicates when removing from the queue.
+    //  * maintain a HashSet of the elements that are already in the queue.
     if (!worklist.contains(b)) {
       worklist.add(b);
     }

dataflow/src/main/java/org/checkerframework/dataflow/analysis/TransferInput.java

@@ -11,10 +11,10 @@
 /**
  * {@code TransferInput} is used as the input type of the individual transfer functions of a {@link
  * ForwardTransferFunction} or a {@link BackwardTransferFunction}. It also contains a reference to
- * the node for which the transfer function will be applied.
+ * the node to which the transfer function will be applied.
  *
  * <p>A {@code TransferInput} contains one or two stores. If two stores are present, one belongs to
- * 'then', and the other to 'else'.
+ * "then", and the other to "else".
  *
  * @param <V> type of the abstract value that is tracked
  * @param <S> the store type used in the analysis
@@ -36,12 +36,12 @@ public class TransferInput<V extends AbstractValue<V>, S extends Store<S>> imple
   protected final @Nullable S store;
 
   /**
-   * The 'then' result store (or {@code null} if none is present). See invariant at {@link #store}.
+   * The "then" result store (or {@code null} if none is present). See invariant at {@link #store}.
    */
   protected final @Nullable S thenStore;
 
   /**
-   * The 'else' result store (or {@code null} if none is present). See invariant at {@link #store}.
+   * The "else" result store (or {@code null} if none is present). See invariant at {@link #store}.
    */
   protected final @Nullable S elseStore;
 
@@ -64,8 +64,8 @@ public long getUid(@UnknownInitialization TransferInput<V, S> this) {
    *
    * @param node the corresponding node
    * @param store the regular result store, or {@code null} if none is present
-   * @param thenStore the 'then' result store, or {@code null} if none is present
-   * @param elseStore the 'else' result store, or {@code null} if none is present
+   * @param thenStore the "then" result store, or {@code null} if none is present
+   * @param elseStore the "else" result store, or {@code null} if none is present
    * @param analysis analysis the corresponding analysis class to get intermediate flow results
    */
   private TransferInput(
@@ -166,7 +166,7 @@ protected TransferInput(TransferInput<V, S> from) {
   }
 
   /**
-   * Returns the abstract value of node {@code n}, which is required to be a 'sub-node' (that is, a
+   * Returns the abstract value of node {@code n}, which is required to be a "sub-node" (that is, a
    * direct or indirect child) of the node this transfer input is associated with. Furthermore,
    * {@code n} cannot be a l-value node. Returns {@code null} if no value is available.
    *

framework/src/main/java/org/checkerframework/framework/type/GenericAnnotatedTypeFactory.java

@@ -2439,6 +2439,7 @@ protected void addAnnotationsFromDefaultForType(
   @FormatMethod
   private static void log(String format, Object... args) {
     if (debug) {
+      System.out.flush();
       SystemPlume.sleep(1); // logging can interleave with typechecker output
       System.out.printf(format, args);
     }