mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 21:40:12 +01:00
Jon Ross-Perkins
6db13532ca
Run clangd-tidy in parallel with clang-tidy, to experimentally see whether it works reasonably well. These may produce slightly different results, and it's not clear that clangd-tidy will be better, so being cautious about switching. A real possibility here is this is slower in some cases (building compile commands takes ~6m below), but faster in the extremely slow cases (when clang-tidy takes >10m). For contrast: - clang-tidy: https://github.com/carbon-language/carbon-lang/actions/runs/16038096026/job/45254162180?pr=5763 - clangd-tidy: https://github.com/carbon-language/carbon-lang/actions/runs/16038096427/job/45254164217?pr=5763
91 lines
3.1 KiB
Python
Executable File
91 lines
3.1 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Create a compilation database for Clang tools like `clangd`.
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If you want `clangd` to be able to index this project, run this script from
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the workspace root to generate a rich compilation database. After the first
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run, you should only need to run it if you encounter `clangd` problems, or if
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you want `clangd` to build an up-to-date index of the entire project. Note
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that in the latter case you may need to manually clear and rebuild clangd's
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index after running this script.
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Note that this script will build generated files in the Carbon project and
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otherwise touch the Bazel build. It works to do the minimum amount necessary.
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Once setup, generally subsequent builds, even of small parts of the project,
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different configurations, or that hit errors won't disrupt things. But, if
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you do hit errors, you can get things back to a good state by fixing the
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build of generated files and re-running this script.
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"""
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__copyright__ = """
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Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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Exceptions. See /LICENSE for license information.
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SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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"""
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import argparse
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import subprocess
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import scripts_utils
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def _build_generated_files(bazel: str, logtostderr: bool) -> None:
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print("Building the generated files so that tools can find them...")
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# Collect the generated file labels. Include some rules which generate
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# files but aren't classified as "generated file".
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kinds_query = (
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"filter("
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' ".*\\.(h|cpp|cc|c|cxx|def|inc)$",'
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' kind("(generated file|manifest_as_cpp)",'
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# tree_sitter is excluded here because it causes the query to failure on
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# `@platforms`.
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" deps(//... except //utils/tree_sitter/...))"
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")"
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)
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log_to = None
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if not logtostderr:
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log_to = subprocess.DEVNULL
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generated_file_labels = subprocess.check_output(
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[bazel, "query", "--keep_going", "--output=label", kinds_query],
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stderr=log_to,
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encoding="utf-8",
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).splitlines()
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print(f"Found {len(generated_file_labels)} generated files...", flush=True)
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# Directly build these labels so that indexing can find them. Allow this to
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# fail in case there are build errors in the client, and just warn the user
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# that they may be missing generated files.
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subprocess.check_call(
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[bazel, "build", "--keep_going", "--remote_download_outputs=toplevel"]
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+ generated_file_labels
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)
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def main() -> None:
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parser = argparse.ArgumentParser(
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description=__doc__,
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allow_abbrev=False,
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)
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parser.add_argument(
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"--alsologtostderr",
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action="store_true",
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help="Prints subcommand errors to stderr (default: False)",
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)
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args = parser.parse_args()
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scripts_utils.chdir_repo_root()
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bazel = scripts_utils.locate_bazel()
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_build_generated_files(bazel, args.alsologtostderr)
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print(
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"Generating compile_commands.json (may take a few minutes)...",
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flush=True,
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)
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subprocess.run([bazel, "run", "@hedron_compile_commands//:refresh_all"])
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if __name__ == "__main__":
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main()
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