diffs-syntect 0.1.0

Fork of syntect 5.3.0 maintained only for diffs-rs: shares compiled regexes within a syntax set, reuses search scratch, skips impossible searches, and reports parser-state memory. Use upstream syntect (https://github.com/trishume/syntect) instead.
Documentation

diffs-syntect

A fork of syntect maintained only for diffs-rs. Use upstream syntect in your own projects. This crate follows the needs of diffs-rs and may change or stop being updated without notice.

  • Upstream base: syntect 5.3.0, revision e467084. The published upstream archive has SHA-256 656b45c05d95a5704399aeef6bd0ddec7b2b3531b7c9e900abbf7c4d2190c925.

  • Fork version: diffs-syntect 0.1.0. Fork versions are independent of upstream versions.

  • Library name: syntect, as upstream. Depend on it under the upstream name:

    [dependencies]
syntect = { package = "diffs-syntect", version = "0.1.0", default-features = false, features = ["default-fancy"] }

  • Fancy Regex backend: diffs-fancy-regex, the matching fork. Its types are not interchangeable with upstream fancy-regex or upstream syntect.

Changes from upstream

Grammar data, rule order, compilation options, and match results are unchanged.

  1. Shared compiled patterns. Each regex owns its lazily compiled cell through an Arc. A syntax set interns equal static patterns, so its grammars share compiled regexes. Cloning a regex shares its compiled cell instead of recompiling.
  2. Line-local search scratch. The parser reuses Fancy Regex search buffers within one parse_line call.
  3. Required-byte rejection. The parser skips a capture search when the line lacks a byte that every match requires.
  4. Scoped engine sharing (feature shared-engines). Static rules in one syntax-set family share Fancy Regex inner engines.
  5. Memory accounting. ParseState::owned_heap_bytes() and ScopeStack::owned_heap_bytes() report owned parser-state capacity.
  6. Diagnostics (features regex-census, owner-census, syntax-timing). Borrowed inspection of compiled regexes and initialization timing. Off by default.

PATCHES.md describes each change, the changed files, packaging changes, and the checks that updates need. The upstream README is in UPSTREAM_README.md.

License

MIT, as upstream. See LICENSE.txt. The upstream copyright notice is unchanged, and the fork's changes are distributed under the same license.