C++: Add BMN extractor - #22688
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paldepind wants to merge 6 commits into
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C++: Add BMN extractor#22688paldepind wants to merge 6 commits into
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Copilot review overview
🟡 Changes recommended
Extraction failure propagation, overlay invalidation, source discovery, and dependency-installation issues can produce incomplete or misleading extraction results.
Review effort: Balanced
Findings: 2
Open (5)
What changed in this PR
Moves the C/C++ build-mode-none Rust extractor into the public CodeQL repository and integrates it with existing build, test, lint, and CI infrastructure.
Changes:
- Imports the extractor, unit tests, fixtures, and developer documentation.
- Adds Cargo and Bazel targets with a dedicated generated Rust dependency universe.
- Adds CI and repository-wide lint/dependency-update integration.
| File | Description |
|---|---|
.github/workflows/cpp-bmn.yml |
Adds Cargo and Bazel CI. |
.pre-commit-config.yaml |
Registers BMN linting. |
MODULE.bazel |
Registers BMN Rust repositories. |
lint |
Runs the BMN linter. |
cpp/extractor/bmn/.gitignore |
Ignores Cargo artifacts. |
cpp/extractor/bmn/BUILD.bazel |
Defines binary and test targets. |
cpp/extractor/bmn/Cargo.lock |
Locks Rust dependencies. |
cpp/extractor/bmn/Cargo.toml |
Defines the Rust package. |
cpp/extractor/bmn/FILE_FILTERING.md |
Documents file filtering. |
cpp/extractor/bmn/README.md |
Documents development workflows. |
cpp/extractor/bmn/lint |
Runs formatting and Clippy checks. |
cpp/extractor/bmn/src/compiler.rs |
Discovers and represents compilers. |
cpp/extractor/bmn/src/dependency_installation.rs |
Installs inferred packages. |
cpp/extractor/bmn/src/directory_tree.rs |
Models project files. |
cpp/extractor/bmn/src/environment.rs |
Reads extraction environment settings. |
cpp/extractor/bmn/src/extraction_command_runner.rs |
Executes extraction commands. |
cpp/extractor/bmn/src/file_filter.rs |
Implements source filtering. |
cpp/extractor/bmn/src/gnu_compiler_default_include_finder.rs |
Discovers compiler include paths. |
cpp/extractor/bmn/src/include_finder.rs |
Resolves include dependencies. |
cpp/extractor/bmn/src/include_scanner.rs |
Parses include directives. |
cpp/extractor/bmn/src/logger.rs |
Configures logging. |
cpp/extractor/bmn/src/main.rs |
Orchestrates extraction. |
cpp/extractor/bmn/src/overlays.rs |
Selects overlay dependencies. |
cpp/extractor/bmn/src/package_database.rs |
Queries package metadata. |
cpp/extractor/bmn/src/path_utils.rs |
Provides path utilities. |
cpp/extractor/bmn/src/project_definitions.rs |
Discovers project sources. |
cpp/extractor/bmn/src/telemetry.rs |
Emits extraction telemetry. |
cpp/extractor/bmn/src/test_utils.rs |
Provides test helpers. |
cpp/extractor/bmn/src/timing.rs |
Records operation timings. |
cpp/extractor/bmn/tests/resources/** |
Adds 24 extractor test fixtures. |
misc/bazel/3rdparty/BUILD.bazel |
Defines dependency generation. |
misc/bazel/3rdparty/cpp_bmn_deps_extension.bzl |
Exposes generated repositories. |
misc/bazel/3rdparty/cpp_bmn_deps/BUILD.bazel |
Configures crate vendoring. |
misc/bazel/3rdparty/cpp_bmn_deps/alias_rules.bzl |
Defines generated aliases. |
misc/bazel/3rdparty/cpp_bmn_deps/crates.bzl |
Registers vendored crates. |
misc/bazel/3rdparty/cpp_bmn_deps/defs.bzl |
Defines generated dependencies. |
misc/bazel/3rdparty/cpp_bmn_deps/BUILD.*.bazel |
Adds 163 generated crate targets. |
misc/bazel/3rdparty/update_cargo_deps.sh |
Includes BMN dependency updates. |
misc/bazel/3rdparty/update_cpp_bmn_deps.sh |
Regenerates BMN dependencies. |
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paldepind
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Adds the sources of the internal C++ BMN extractor. All files are verbatim copies of what exists internally (some might say that they are byte-for-byte identical but I'll refrain from using that phrase).
Add a script for generating vendored dependencies for the C++ BMN extractor. The setup and approach is identical to what we already use for existing Rust-based extractors.
Check in the vendored dependencies. All files in this commit are auto-generated.
Add a Bazel target for the C/C++ BMN extractor. This required a change in `cpp/extractor/bmn/src/test_utils.rs` since using `$CARGO_MANIFEST_DIR` doesn't work when invoking that target from the internal repo.
The updated Rust toolchain introduced additional Clippy lints. This fixes the lints.
Run Cargo and Bazel checks when the build-mode-none extractor changes, integrate its Rust lint into pre-commit, and document the standalone development workflow. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
paldepind
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paldepind
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September 29, 2026 08:03
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This PR moves the C/C++ build-mode-none extractor to
cpp/extractor/bmnin this repo.This open sources the BMN extractor.
I recommend a per-commit review. The commit message on each commit should explain what's going on.
A dependent PR on the internal repo deletes the migrated implementation and adjust the build system. The PR also has a few other details, and they should be reviewed in tandem.