From 4ca965019f07b1b13be738fc6bdc105f9ce98f37 Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Thu, 10 Dec 2015 21:06:22 -0800
Subject: [PATCH] Break down unverified reductions eagerly when the next node
 has changes

---
 src/runtime/parser.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/runtime/parser.c b/src/runtime/parser.c
index 4498e9bb..d5574152 100644
--- a/src/runtime/parser.c
+++ b/src/runtime/parser.c
@@ -145,6 +145,10 @@ static TSTree *ts_parser__get_next_lookahead(TSParser *self, int head) {
 
     bool can_reuse = true;
     if (ts_tree_has_changes(state->reusable_subtree)) {
+      if (state->is_verifying) {
+        ts_parser__breakdown_top_of_stack(self, head);
+        state->is_verifying = false;
+      }
       LOG("breakdown_changed sym:%s", SYM_NAME(state->reusable_subtree->symbol));
       can_reuse = false;
     } else if (ts_tree_is_fragile(state->reusable_subtree)) {