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Prevent infinite loop in skip_preceding_trees error recovery strategy

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Max Brunsfeld 2017-03-21 12:14:44 -07:00
parent a15e974150
commit 1f908324dc
1 changed files with 5 additions and 0 deletions
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5
src/runtime/parser.c
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@ -904,6 +904,11 @@ static StackIterateAction parser__skip_preceding_trees_callback(
void *payload, TSStateId state, TreeArray *trees, uint32_t tree_count,
bool is_done, bool is_pending) {
if (tree_count > 0 && state != ERROR_STATE) {
uint32_t bytes_skipped = 0;
for (uint32_t i = 0; i < trees->size; i++) {
bytes_skipped += ts_tree_total_bytes(trees->contents[i]);
}
if (bytes_skipped == 0) return StackIterateNone;
SkipPrecedingTreesSession *session = payload;
Parser *self = session->parser;
TSSymbol lookahead_symbol = session->lookahead_symbol;