mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 19:20:10 +01:00
Jon MeowandMatthew Riley
88a9d244b7
What this does: - Sets up a `migrate_cpp` tool which currently only runs `clang-tidy`. - This is intended to have more transformations in the future. - Sets up a `migrate_cpp.sh` script. - This copies the original woff2 code into a `carbon` directory and runs the `migrate_cpp` tool on it there. - Adds the initial `carbon` directory of woff2 - To be clear, this is currently only updated via `clang-tidy`. - More transformations should be expected in the future. - Minor related edits. For example: - Adjust pre-commit to skip the `carbon` directory, because it's third-party code and shouldn't be edited in the same way. - Adds `@brotli_carbon` as a local repository so that we can "build" outputs. - Makes clang-tidy from the bootstrap toolchain accessible for BUILD dependencies, as it's then used for `migrate_cpp`. What this does not do: - Any actual transformation of C++ code to Carbon Co-authored-by: Matthew Riley <mdriley@gmail.com>
73 lines
2.0 KiB
Python
73 lines
2.0 KiB
Python
"""Migrates C++ code to Carbon."""
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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 glob
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import os
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import subprocess
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import sys
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_CLANG_TIDY = "../external/bootstrap_clang_toolchain/bin/clang-tidy"
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_CPP_EXTS = {".h", ".c", ".cc", ".cpp", ".cxx"}
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def _data_file(relative_path):
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"""Returns the path to a data file."""
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return os.path.join(os.path.dirname(sys.argv[0]), relative_path)
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def _parse_args(args=None):
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"""Parses command-line arguments and flags."""
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument(
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"dir",
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type=str,
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help="A directory containing C++ files to migrate to Carbon.",
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)
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parsed_args = parser.parse_args(args=args)
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return parsed_args
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def _gather_files(parsed_args):
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"""Returns the list of C++ files to convert."""
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all_files = glob.glob(
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os.path.join(parsed_args.dir, "**/*.*"), recursive=True
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)
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cpp_files = [f for f in all_files if os.path.splitext(f)[1] in _CPP_EXTS]
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if not cpp_files:
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sys.exit(
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"%r doesn't contain any C++ files to convert." % parsed_args.dir
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)
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return sorted(cpp_files)
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def _clang_tidy(parsed_args, cpp_files):
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"""Runs clang-tidy to fix C++ files in a directory."""
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print("Running clang-tidy...")
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clang_tidy = _data_file(_CLANG_TIDY)
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with open(_data_file("clang_tidy.yaml")) as f:
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config = f.read()
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subprocess.run([clang_tidy, "--fix", "--config", config] + cpp_files)
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def _main():
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"""Main program execution."""
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parsed_args = _parse_args()
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# Validate arguments.
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if not os.path.isdir(parsed_args.dir):
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sys.exit("%r must point to a directory." % parsed_args.dir)
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cpp_files = _gather_files(parsed_args)
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_clang_tidy(parsed_args, cpp_files)
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print("Done!")
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if __name__ == "__main__":
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_main()
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