def main()

in check-grammar-crate.py [0:0]

• 79 lines of code
• 1 McCabe index (conditional complexity)

def main() -> None:
    parser = argparse.ArgumentParser(
        prog="check-grammar-crate",
        description="This tool computes the metrics of a chosen repository "
        "before and after a tree-sitter grammar update.",
        epilog="The source code of this program can be found on "
        "GitHub at https://github.com/mozilla/rust-code-analysis",
    )

    # Subcommands parsers
    commands = parser.add_subparsers(help="Sub-command help")

    # Compute metrics command
    compute_metrics_cmd = commands.add_parser(
        "compute-metrics",
        help="Computes the metrics of a chosen repository before and after "
        "a tree-sitter grammar update.",
    )

    # Optional arguments
    compute_metrics_cmd.add_argument(
        "--only-new",
        "-n",
        action="store_true",
        help="Only compute the metrics after a tree-sitter grammar update",
    )

    # Arguments
    compute_metrics_cmd.add_argument(
        "-u",
        "--url",
        type=str,
        required=True,
        help="URL of the repository used to compute the metrics",
    )

    compute_metrics_cmd.add_argument(
        "-p",
        "--path",
        type=str,
        required=True,
        help="Path where the repository will be saved locally",
    )

    compute_metrics_cmd.add_argument(
        "-g",
        "--grammar",
        type=str,
        required=True,
        help="tree-sitter grammar to be updated",
    )
    compute_metrics_cmd.set_defaults(func=compute_metrics)

    # Compute continuous integration metrics command
    compute_ci_metrics_cmd = commands.add_parser(
        "compute-ci-metrics",
        help="Computes the metrics of a chosen repository before and after "
        "a tree-sitter grammar update on a continuous integration system.",
    )

    # Arguments
    compute_ci_metrics_cmd.add_argument(
        "-p",
        "--path",
        type=str,
        required=True,
        help="Path where the rust-code-analysis repository is saved on the "
        "continuous integration system",
    )
    compute_ci_metrics_cmd.add_argument(
        "-g",
        "--grammar",
        type=str,
        required=True,
        help="tree-sitter grammar to be updated",
    )

    compute_ci_metrics_cmd.set_defaults(func=compute_ci_metrics)

    # Compare metrics command
    compare_metrics_cmd = commands.add_parser(
        "compare-metrics",
        help="Compares the metrics before and after "
        "a tree-sitter grammar update in order to discover whether "
        "there are differences.",
    )

    # Arguments
    compare_metrics_cmd.add_argument(
        "-g",
        "--grammar",
        type=str,
        required=True,
        help="tree-sitter grammar used to compare the metrics",
    )
    compare_metrics_cmd.set_defaults(func=compare_metrics)

    # Parse arguments
    args = parser.parse_args()

    # Call the command
    args.func(args)