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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
.cargo chore: remove CARGO_WORKSPACE_DIR var 2025-09-24 16:14:08 -04:00
.github ci: increase nvim-ts generate max jobs to 10 2026-08-09 12:28:50 -05:00
.zed Add zed config file (enable all cargo features for rust-analyzer) 2025-04-23 16:32:21 -07:00
crates fix(generate)!: reject non-ASCII byte classes in (?-u:...) patterns 2026-08-14 00:13:39 -04:00
docs feat(cli)!: rework HTML output modes in highlight 2026-07-24 20:56:56 -04:00
lib fix(lib)!: make lookahead iterator exhaustion sticky and retain its language 2026-08-14 00:13:54 -04:00
test/fixtures feat(test): allow corpus tests to use cst outputs 2026-08-09 15:48:37 -05:00
.dockerignore Add a simple dockerfile for testing 2024-03-18 12:35:10 -07:00
.editorconfig style(zig): reformat files 2025-08-28 20:54:25 +03:00
.envrc nix: support single-checkout and multi-workspace direnv setups 2026-02-18 00:50:06 -05:00
.gitattributes Reorganize rust crates into a flat crates directory, simplify some CI steps (#4496) 2025-06-06 14:25:37 -07:00
.gitignore refactor: rework nix flake 2025-09-09 03:03:35 -04:00
.taplo.toml treewide: add taplo config and reformat toml files 2026-02-18 00:59:34 -05:00
build.zig build(zig): update to zig 0.16 2026-04-15 14:54:53 +02:00
build.zig.zon build(deps): bump wasmtime-c-api to v36.0.13 2026-08-06 01:06:13 -04:00
Cargo.lock build(deps): bump the cargo group with 3 updates 2026-08-10 23:42:21 +02:00
Cargo.toml perf(generate): represent the grammar IR as a flat, pooled arena 2026-08-09 12:28:50 -05:00
CMakeLists.txt fix(lib): address strict aliasing violations in TreeCursor type 2026-06-16 23:55:43 -04:00
CONTRIBUTING.md docs: improve docs for contributing to docs 2025-01-10 22:57:54 -05:00
Dockerfile Add a simple dockerfile for testing 2024-03-18 12:35:10 -07:00
flake.lock flake: update lockfile 2026-02-09 22:52:13 -05:00
flake.nix nix: fix clangd not working 2026-02-08 11:09:31 +01:00
FUNDING.json chore: add FUNDING.json 2023-11-08 00:08:07 -05:00
LICENSE chore: copy license to all packages 2025-09-11 03:12:35 -04:00
Makefile fix(lib): address strict aliasing violations in TreeCursor type 2026-06-16 23:55:43 -04:00
Package.swift fix(build): define _BSD_SOURCE 2026-01-12 19:41:58 -05:00
README.md docs: change WASM/wasm to Wasm 2025-08-21 09:56:32 +03:00

tree-sitter

DOI discord matrix

Tree-sitter is a parser generator tool and an incremental parsing library. It can build a concrete syntax tree for a source file and efficiently update the syntax tree as the source file is edited. Tree-sitter aims to be:

  • General enough to parse any programming language
  • Fast enough to parse on every keystroke in a text editor
  • Robust enough to provide useful results even in the presence of syntax errors
  • Dependency-free so that the runtime library (which is written in pure C) can be embedded in any application