hotfix[java-port]: Eliminate possible NPE

Signed-off-by: rovo98 <rovo98@163.com>
mike-lischke · Apr 11, 2024 · b5e185f · b5e185f
1 parent 60f62a4
commit b5e185f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/ports/java/src/main/java/com/vmware/antlr4c3/CodeCompletionCore.java b/ports/java/src/main/java/com/vmware/antlr4c3/CodeCompletionCore.java
@@ -338,6 +338,7 @@ private void collectFollowSets(ATNState s, ATNState stopState, LinkedList<Follow
             FollowSetWithPath set = new FollowSetWithPath();
             set.intervals = IntervalSet.of(Token.EPSILON);
             set.path = new LinkedList<Integer>(ruleStack);
+            set.following = new LinkedList<Integer>();
             followSets.addLast(set);
             return;
         }
@@ -362,6 +363,7 @@ private void collectFollowSets(ATNState s, ATNState stopState, LinkedList<Follow
                 FollowSetWithPath set = new FollowSetWithPath();
                 set.intervals = IntervalSet.of(Token.MIN_USER_TOKEN_TYPE, this.atn.maxTokenType);
                 set.path = new LinkedList<Integer>(ruleStack);
+                set.following = new LinkedList<Integer>();
                 followSets.addLast(set);
             } else {
                 IntervalSet label = transition.label();