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Add a fail-closed Tree-sitter PowerShell lowerer (#39213)

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## What changed

- Add a Tree-sitter-based lowerer that converts a conservative subset of literal PowerShell commands into argument vectors.
- Reject dynamic expressions, parse recovery, unsupported value conversions, directives, and source outside recognized command nodes instead of guessing their meaning.
- Keep the lowerer alongside the existing production parser for later adoption.

## Testing

- Add fixture-driven coverage for supported literal commands and unsupported or ambiguous syntax, including a dedicated `#requires` rejection test.

GitOrigin-RevId: a6e7acc264ca40df264db4b271e38ae7d89e1ec4
This commit is contained in:
iceweasel-oai
2026-08-18 14:49:38 +00:00
committed by copyberry
parent a04940cb12
commit bb701f1e8c
9 changed files with 610 additions and 1 deletions
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MODULE.bazel.lock generated
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@@ -1796,6 +1796,7 @@
"tracing_0.1.44": "{\"dependencies\":[{\"default_features\":false,\"kind\":\"dev\",\"name\":\"criterion\",\"req\":\"^0.3.6\"},{\"default_features\":false,\"kind\":\"dev\",\"name\":\"futures\",\"req\":\"^0.3.21\"},{\"name\":\"log\",\"optional\":true,\"req\":\"^0.4.17\"},{\"kind\":\"dev\",\"name\":\"log\",\"req\":\"^0.4.17\"},{\"name\":\"pin-project-lite\",\"req\":\"^0.2.9\"},{\"name\":\"tracing-attributes\",\"optional\":true,\"req\":\"^0.1.31\"},{\"default_features\":false,\"name\":\"tracing-core\",\"req\":\"^0.1.36\"},{\"kind\":\"dev\",\"name\":\"wasm-bindgen-test\",\"req\":\"^0.3.38\",\"target\":\"cfg(target_arch = \\\"wasm32\\\")\"}],\"features\":{\"async-await\":[],\"attributes\":[\"tracing-attributes\"],\"default\":[\"std\",\"attributes\"],\"log-always\":[\"log\"],\"max_level_debug\":[],\"max_level_error\":[],\"max_level_info\":[],\"max_level_off\":[],\"max_level_trace\":[],\"max_level_warn\":[],\"release_max_level_debug\":[],\"release_max_level_error\":[],\"release_max_level_info\":[],\"release_max_level_off\":[],\"release_max_level_trace\":[],\"release_max_level_warn\":[],\"std\":[\"tracing-core/std\"],\"valuable\":[\"tracing-core/valuable\"]}}",
"tree-sitter-bash_0.25.1": "{\"dependencies\":[{\"kind\":\"build\",\"name\":\"cc\",\"req\":\"^1.1\"},{\"kind\":\"dev\",\"name\":\"tree-sitter\",\"req\":\"^0.25\"},{\"name\":\"tree-sitter-language\",\"req\":\"^0.1\"}],\"features\":{}}",
"tree-sitter-language_0.1.7": "{\"dependencies\":[],\"features\":{}}",
"tree-sitter-powershell_0.26.4": "{\"dependencies\":[{\"kind\":\"build\",\"name\":\"cc\",\"req\":\"^1.2\"},{\"kind\":\"dev\",\"name\":\"tree-sitter\",\"req\":\"^0.26.5\"},{\"name\":\"tree-sitter-language\",\"req\":\"^0.1\"}],\"features\":{}}",
"tree-sitter_0.25.10": "{\"dependencies\":[{\"kind\":\"build\",\"name\":\"bindgen\",\"optional\":true,\"req\":\"^0.71.1\"},{\"kind\":\"build\",\"name\":\"cc\",\"req\":\"^1.2.10\"},{\"default_features\":false,\"features\":[\"unicode\"],\"name\":\"regex\",\"req\":\"^1.11.1\"},{\"default_features\":false,\"name\":\"regex-syntax\",\"req\":\"^0.8.5\"},{\"features\":[\"preserve_order\"],\"kind\":\"build\",\"name\":\"serde_json\",\"req\":\"^1.0.137\"},{\"name\":\"streaming-iterator\",\"req\":\"^0.1.9\"},{\"name\":\"tree-sitter-language\",\"req\":\"^0.1\"},{\"default_features\":false,\"features\":[\"cranelift\",\"gc-drc\"],\"name\":\"wasmtime-c-api\",\"optional\":true,\"package\":\"wasmtime-c-api-impl\",\"req\":\"^29.0.1\"}],\"features\":{\"default\":[\"std\"],\"std\":[\"regex/std\",\"regex/perf\",\"regex-syntax/unicode\"],\"wasm\":[\"std\",\"wasmtime-c-api\"]}}",
"tree_magic_mini_3.2.2": "{\"dependencies\":[{\"kind\":\"dev\",\"name\":\"bencher\",\"req\":\"^0.1.0\"},{\"name\":\"memchr\",\"req\":\"^2.0\"},{\"name\":\"nom\",\"req\":\"^8.0\"},{\"default_features\":false,\"name\":\"petgraph\",\"req\":\"^0.8.0\"},{\"name\":\"tree_magic_db\",\"optional\":true,\"req\":\"^3.0\"}],\"features\":{\"with-gpl-data\":[\"dep:tree_magic_db\"]}}",
"triomphe_0.1.15": "{\"dependencies\":[{\"name\":\"arc-swap\",\"optional\":true,\"req\":\"^1.3.0\"},{\"default_features\":false,\"name\":\"serde\",\"optional\":true,\"req\":\"^1.0\"},{\"default_features\":false,\"name\":\"stable_deref_trait\",\"optional\":true,\"req\":\"^1.1.1\"},{\"name\":\"unsize\",\"optional\":true,\"req\":\"^1.1\"}],\"features\":{\"default\":[\"serde\",\"stable_deref_trait\",\"std\"],\"std\":[],\"unstable_dropck_eyepatch\":[]}}",