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feat: add error information in the progress callback

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This allows users to bail parsing if an error was *definitely* detected
using the progress callback, as all possible stack versions have a
non-zero error cost.

Co-authored-by: Amaan Qureshi <amaanq12@gmail.com>
This commit is contained in:
Allan Clements 2025-01-25 01:21:04 -05:00 • committed by Amaan Qureshi
parent ca087d2c07
commit cda634a1c4
9 changed files with 87 additions and 4 deletions
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14
lib/src/parser.c
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@ -116,6 +116,7 @@ struct TSParser {
unsigned included_range_difference_index;
bool has_scanner_error;
bool canceled_balancing;
bool has_error;
};
typedef struct {
@ -1419,6 +1420,16 @@ static void ts_parser__recover(
self->stack, version, ts_subtree_last_external_token(lookahead)
);
}
bool has_error = true;
for (unsigned i = 0; i < ts_stack_version_count(self->stack); i++) {
ErrorStatus status = ts_parser__version_status(self, i);
if (!status.is_in_error) {
has_error = false;
break;
}
}
self->has_error = has_error;
}
static void ts_parser__handle_error(
@ -1525,6 +1536,7 @@ static bool ts_parser__check_progress(TSParser *self, Subtree *lookahead, const
}
if (self->parse_options.progress_callback && position != NULL) {
self->parse_state.current_byte_offset = *position;
self->parse_state.has_error = self->has_error;
}
if (
self->operation_count == 0 &&
@ -1929,6 +1941,7 @@ TSParser *ts_parser_new(void) {
self->timeout_duration = 0;
self->language = NULL;
self->has_scanner_error = false;
self->has_error = false;
self->canceled_balancing = false;
self->external_scanner_payload = NULL;
self->end_clock = clock_null();
@ -2066,6 +2079,7 @@ void ts_parser_reset(TSParser *self) {
}
self->accept_count = 0;
self->has_scanner_error = false;
self->has_error = false;
self->parse_options = (TSParseOptions) {0};
self->parse_state = (TSParseState) {0};
}