tree-sitter.tree-sitter/lib/include/tree_sitter
Will Lillis 7bf4a10995 fix(lib)!: make lookahead iterator exhaustion sticky and retain its language
Track the iterator's phase so exhaustion is sticky, and gate the symbol name on
it, so `NULL` means "not positioned on a symbol".

`ts_lookahead_iterator_new` was also the only language consuming constructor
that did not `ts_language_copy`, so an iterator outliving a wasm language read
freed memory. Retain in `_new` and `_reset`, release in `_delete`.

Previously:
- `ts_lookahead_iterator__next` left a small parse state's cursor one past its
group end, so re-advancing an exhausted iterator resumed returning `true` and
walked through the rest of `ts_small_parse_table` and off the end of it.

- `ts_lookahead_iterator_current_symbol_name` returned `NULL` only when the
exhausted symbol index happened to fall outside the names table, so a grammar
with aliases returned a real but wrong name instead.
2026-08-14 00:13:54 -04:00
..
api.h fix(lib)!: make lookahead iterator exhaustion sticky and retain its language 2026-08-14 00:13:54 -04:00