feat(query): polyglot from_directory with auto-detection#13
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tob-scott-a merged 1 commit intomainfrom Apr 23, 2026
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QueryEngine.from_directory previously accepted one language at a time, but real repositories mix languages (Python + Solidity contracts, TypeScript + Rust, etc.). Callers had to build two engines and figure out how to combine them, or give up on multi-language analysis. The `language` argument now accepts: - `"auto"` — walks the tree, detects every supported language with at least one matching file, parses each, and merges into a single graph. Skips common vendor directories (node_modules, .venv, target, etc.). - `"python,rust"` — explicit comma-separated list for when auto-detect would pull in too much or miss something. - `"python"` — single language (unchanged; the single-language path is preserved byte-for-byte when exactly one language is specified). Entrypoint detection runs on the merged graph, so a repo with a Python main() and a Solidity external function surfaces both in attack_surface() from a single analyze call. Also exposes `detect_languages(path)` as a public helper for callers that want the list without building a graph. 12 new tests: detection on single/multi/empty/vendor-heavy directories, auto-merge behavior, explicit list handling, error paths, and a regression guard that single-language behavior is unchanged. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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QueryEngine.from_directory previously accepted one language at a time, but real repositories mix languages (Python + Solidity contracts, TypeScript + Rust, etc.). Callers had to build two engines and figure out how to combine them, or give up on multi-language analysis.
The
languageargument now accepts:"auto"— walks the tree, detects every supported language with at least one matching file, parses each, and merges into a single graph. Skips common vendor directories (node_modules, .venv, target, etc.)."python,rust"— explicit comma-separated list for when auto-detect would pull in too much or miss something."python"— single language (unchanged; the single-language path is preserved byte-for-byte when exactly one language is specified).Entrypoint detection runs on the merged graph, so a repo with a Python main() and a Solidity external function surfaces both in attack_surface() from a single analyze call.
Also exposes
detect_languages(path)as a public helper for callers that want the list without building a graph.12 new tests: detection on single/multi/empty/vendor-heavy directories, auto-merge behavior, explicit list handling, error paths, and a regression guard that single-language behavior is unchanged.