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Third-party attribution: tree-sitter Swift grammar

This directory vendors the tree-sitter Swift grammar so the Swift extractor can parse Swift source into an AST. It is third-party code, distributed under a different license (MIT) than the rest of enola (Apache-2.0).

Source

  • Project: tree-sitter-swift
  • Author: Alex Pinkus alex.pinkus@gmail.com
  • License: MIT — see LICENSE (Copyright (c) 2021 alex-pinkus)
  • Version vendored: Go module github.com/alex-pinkus/tree-sitter-swift pseudo-version v0.0.0-20260601025047-d42e9bb24646 (commit d42e9bb24646)

What is vendored, and how it was produced

File(s) Origin
src/scanner.c Copied verbatim from the upstream repository (the project's hand-written external scanner).
grammar.json, src/node-types.json Copied verbatim from the upstream repository.
src/parser.c, src/tree_sitter/*.h Generated locally from grammar.json using the tree-sitter CLI. Upstream git-ignores the generated parser, so it must be regenerated to build.

The generated parser is a deterministic product of the upstream grammar.json; it was not hand-edited. The cgo_parser.c / cgo_scanner.c shims and binding.go in this directory are enola's own glue code (Apache-2.0) and are not part of the upstream grammar.

Regenerating src/parser.c

cd internal/extractors/swiftextractor/grammar
tree-sitter generate grammar.json --abi 14

The ABI (14) is pinned to match github.com/tree-sitter/go-tree-sitter v0.24.0. This was produced with tree-sitter-cli v0.24.7 (e.g. npx tree-sitter-cli@0.24.7).