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Checks: 'bugprone-*,cert-*,clang-analyzer-*,cppcoreguidelines-*,google-*,modernize-*performance-*,readability-*' | ||
CheckOptions: | ||
- key: readability-braces-around-statements.ShortStatementLines | ||
value: '1' | ||
- key: readability-implicit-bool-conversion.AllowIntegerConditions | ||
value: '1' |
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#!/bin/sh | ||
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format() { | ||
find include src tests tools -type f -exec clang-format -i ${} | ||
} |
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#!/usr/bin/env python | ||
# | ||
#===- run-clang-tidy.py - Parallel clang-tidy runner ---------*- python -*--===# | ||
# | ||
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||
# See https://llvm.org/LICENSE.txt for license information. | ||
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||
# | ||
#===------------------------------------------------------------------------===# | ||
# FIXME: Integrate with clang-tidy-diff.py | ||
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""" | ||
Parallel clang-tidy runner | ||
========================== | ||
Runs clang-tidy over all files in a compilation database. Requires clang-tidy | ||
and clang-apply-replacements in $PATH. | ||
Example invocations. | ||
- Run clang-tidy on all files in the current working directory with a default | ||
set of checks and show warnings in the cpp files and all project headers. | ||
run-clang-tidy.py $PWD | ||
- Fix all header guards. | ||
run-clang-tidy.py -fix -checks=-*,llvm-header-guard | ||
- Fix all header guards included from clang-tidy and header guards | ||
for clang-tidy headers. | ||
run-clang-tidy.py -fix -checks=-*,llvm-header-guard extra/clang-tidy \ | ||
-header-filter=extra/clang-tidy | ||
Compilation database setup: | ||
http:https://clang.llvm.org/docs/HowToSetupToolingForLLVM.html | ||
""" | ||
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from __future__ import print_function | ||
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import argparse | ||
import glob | ||
import json | ||
import multiprocessing | ||
import os | ||
import re | ||
import shutil | ||
import subprocess | ||
import sys | ||
import tempfile | ||
import threading | ||
import traceback | ||
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try: | ||
import yaml | ||
except ImportError: | ||
yaml = None | ||
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is_py2 = sys.version[0] == '2' | ||
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if is_py2: | ||
import Queue as queue | ||
else: | ||
import queue as queue | ||
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def find_compilation_database(path): | ||
"""Adjusts the directory until a compilation database is found.""" | ||
result = './' | ||
while not os.path.isfile(os.path.join(result, path)): | ||
if os.path.realpath(result) == '/': | ||
print('Error: could not find compilation database.') | ||
sys.exit(1) | ||
result += '../' | ||
return os.path.realpath(result) | ||
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def make_absolute(f, directory): | ||
if os.path.isabs(f): | ||
return f | ||
return os.path.normpath(os.path.join(directory, f)) | ||
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def get_tidy_invocation(f, clang_tidy_binary, checks, tmpdir, build_path, | ||
header_filter, extra_arg, extra_arg_before, quiet, | ||
config): | ||
"""Gets a command line for clang-tidy.""" | ||
start = [clang_tidy_binary] | ||
if header_filter is not None: | ||
start.append('-header-filter=' + header_filter) | ||
if checks: | ||
start.append('-checks=' + checks) | ||
if tmpdir is not None: | ||
start.append('-export-fixes') | ||
# Get a temporary file. We immediately close the handle so clang-tidy can | ||
# overwrite it. | ||
(handle, name) = tempfile.mkstemp(suffix='.yaml', dir=tmpdir) | ||
os.close(handle) | ||
start.append(name) | ||
for arg in extra_arg: | ||
start.append('-extra-arg=%s' % arg) | ||
for arg in extra_arg_before: | ||
start.append('-extra-arg-before=%s' % arg) | ||
start.append('-p=' + build_path) | ||
if quiet: | ||
start.append('-quiet') | ||
if config: | ||
start.append('-config=' + config) | ||
start.append(f) | ||
return start | ||
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def merge_replacement_files(tmpdir, mergefile): | ||
"""Merge all replacement files in a directory into a single file""" | ||
# The fixes suggested by clang-tidy >= 4.0.0 are given under | ||
# the top level key 'Diagnostics' in the output yaml files | ||
mergekey="Diagnostics" | ||
merged=[] | ||
for replacefile in glob.iglob(os.path.join(tmpdir, '*.yaml')): | ||
content = yaml.safe_load(open(replacefile, 'r')) | ||
if not content: | ||
continue # Skip empty files. | ||
merged.extend(content.get(mergekey, [])) | ||
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if merged: | ||
# MainSourceFile: The key is required by the definition inside | ||
# include/clang/Tooling/ReplacementsYaml.h, but the value | ||
# is actually never used inside clang-apply-replacements, | ||
# so we set it to '' here. | ||
output = { 'MainSourceFile': '', mergekey: merged } | ||
with open(mergefile, 'w') as out: | ||
yaml.safe_dump(output, out) | ||
else: | ||
# Empty the file: | ||
open(mergefile, 'w').close() | ||
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def check_clang_apply_replacements_binary(args): | ||
"""Checks if invoking supplied clang-apply-replacements binary works.""" | ||
try: | ||
subprocess.check_call([args.clang_apply_replacements_binary, '--version']) | ||
except: | ||
print('Unable to run clang-apply-replacements. Is clang-apply-replacements ' | ||
'binary correctly specified?', file=sys.stderr) | ||
traceback.print_exc() | ||
sys.exit(1) | ||
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def apply_fixes(args, tmpdir): | ||
"""Calls clang-apply-fixes on a given directory.""" | ||
invocation = [args.clang_apply_replacements_binary] | ||
if args.format: | ||
invocation.append('-format') | ||
if args.style: | ||
invocation.append('-style=' + args.style) | ||
invocation.append(tmpdir) | ||
subprocess.call(invocation) | ||
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def run_tidy(args, tmpdir, build_path, queue, lock, failed_files): | ||
"""Takes filenames out of queue and runs clang-tidy on them.""" | ||
while True: | ||
name = queue.get() | ||
invocation = get_tidy_invocation(name, args.clang_tidy_binary, args.checks, | ||
tmpdir, build_path, args.header_filter, | ||
args.extra_arg, args.extra_arg_before, | ||
args.quiet, args.config) | ||
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proc = subprocess.Popen(invocation, stdout=subprocess.PIPE, stderr=subprocess.PIPE) | ||
output, err = proc.communicate() | ||
if proc.returncode != 0: | ||
failed_files.append(name) | ||
with lock: | ||
sys.stdout.write(' '.join(invocation) + '\n' + output.decode('utf-8')) | ||
if len(err) > 0: | ||
sys.stdout.flush() | ||
sys.stderr.write(err.decode('utf-8')) | ||
queue.task_done() | ||
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def main(): | ||
parser = argparse.ArgumentParser(description='Runs clang-tidy over all files ' | ||
'in a compilation database. Requires ' | ||
'clang-tidy and clang-apply-replacements in ' | ||
'$PATH.') | ||
parser.add_argument('-clang-tidy-binary', metavar='PATH', | ||
default='clang-tidy', | ||
help='path to clang-tidy binary') | ||
parser.add_argument('-clang-apply-replacements-binary', metavar='PATH', | ||
default='clang-apply-replacements', | ||
help='path to clang-apply-replacements binary') | ||
parser.add_argument('-checks', default=None, | ||
help='checks filter, when not specified, use clang-tidy ' | ||
'default') | ||
parser.add_argument('-config', default=None, | ||
help='Specifies a configuration in YAML/JSON format: ' | ||
' -config="{Checks: \'*\', ' | ||
' CheckOptions: [{key: x, ' | ||
' value: y}]}" ' | ||
'When the value is empty, clang-tidy will ' | ||
'attempt to find a file named .clang-tidy for ' | ||
'each source file in its parent directories.') | ||
parser.add_argument('-header-filter', default=None, | ||
help='regular expression matching the names of the ' | ||
'headers to output diagnostics from. Diagnostics from ' | ||
'the main file of each translation unit are always ' | ||
'displayed.') | ||
if yaml: | ||
parser.add_argument('-export-fixes', metavar='filename', dest='export_fixes', | ||
help='Create a yaml file to store suggested fixes in, ' | ||
'which can be applied with clang-apply-replacements.') | ||
parser.add_argument('-j', type=int, default=0, | ||
help='number of tidy instances to be run in parallel.') | ||
parser.add_argument('files', nargs='*', default=['.*'], | ||
help='files to be processed (regex on path)') | ||
parser.add_argument('-fix', action='store_true', help='apply fix-its') | ||
parser.add_argument('-format', action='store_true', help='Reformat code ' | ||
'after applying fixes') | ||
parser.add_argument('-style', default='file', help='The style of reformat ' | ||
'code after applying fixes') | ||
parser.add_argument('-p', dest='build_path', | ||
help='Path used to read a compile command database.') | ||
parser.add_argument('-extra-arg', dest='extra_arg', | ||
action='append', default=[], | ||
help='Additional argument to append to the compiler ' | ||
'command line.') | ||
parser.add_argument('-extra-arg-before', dest='extra_arg_before', | ||
action='append', default=[], | ||
help='Additional argument to prepend to the compiler ' | ||
'command line.') | ||
parser.add_argument('-quiet', action='store_true', | ||
help='Run clang-tidy in quiet mode') | ||
args = parser.parse_args() | ||
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db_path = 'compile_commands.json' | ||
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if args.build_path is not None: | ||
build_path = args.build_path | ||
else: | ||
# Find our database | ||
build_path = find_compilation_database(db_path) | ||
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try: | ||
invocation = [args.clang_tidy_binary, '-list-checks'] | ||
invocation.append('-p=' + build_path) | ||
if args.checks: | ||
invocation.append('-checks=' + args.checks) | ||
invocation.append('-') | ||
if args.quiet: | ||
# Even with -quiet we still want to check if we can call clang-tidy. | ||
with open(os.devnull, 'w') as dev_null: | ||
subprocess.check_call(invocation, stdout=dev_null) | ||
else: | ||
subprocess.check_call(invocation) | ||
except: | ||
print("Unable to run clang-tidy.", file=sys.stderr) | ||
sys.exit(1) | ||
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# Load the database and extract all files. | ||
database = json.load(open(os.path.join(build_path, db_path))) | ||
files = [make_absolute(entry['file'], entry['directory']) | ||
for entry in database] | ||
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max_task = args.j | ||
if max_task == 0: | ||
max_task = multiprocessing.cpu_count() | ||
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tmpdir = None | ||
if args.fix or (yaml and args.export_fixes): | ||
check_clang_apply_replacements_binary(args) | ||
tmpdir = tempfile.mkdtemp() | ||
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# Build up a big regexy filter from all command line arguments. | ||
file_name_re = re.compile('|'.join(args.files)) | ||
print('|'.join(args.files)) | ||
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return_code = 0 | ||
try: | ||
# Spin up a bunch of tidy-launching threads. | ||
task_queue = queue.Queue(max_task) | ||
# List of files with a non-zero return code. | ||
failed_files = [] | ||
lock = threading.Lock() | ||
for _ in range(max_task): | ||
t = threading.Thread(target=run_tidy, | ||
args=(args, tmpdir, build_path, task_queue, lock, failed_files)) | ||
t.daemon = True | ||
t.start() | ||
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# Fill the queue with files. | ||
for name in files: | ||
if file_name_re.search(name): | ||
task_queue.put(name) | ||
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# Wait for all threads to be done. | ||
task_queue.join() | ||
if len(failed_files): | ||
return_code = 1 | ||
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except KeyboardInterrupt: | ||
# This is a sad hack. Unfortunately subprocess goes | ||
# bonkers with ctrl-c and we start forking merrily. | ||
print('\nCtrl-C detected, goodbye.') | ||
if tmpdir: | ||
shutil.rmtree(tmpdir) | ||
os.kill(0, 9) | ||
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if yaml and args.export_fixes: | ||
print('Writing fixes to ' + args.export_fixes + ' ...') | ||
try: | ||
merge_replacement_files(tmpdir, args.export_fixes) | ||
except: | ||
print('Error exporting fixes.\n', file=sys.stderr) | ||
traceback.print_exc() | ||
return_code=1 | ||
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if args.fix: | ||
print('Applying fixes ...') | ||
try: | ||
apply_fixes(args, tmpdir) | ||
except: | ||
print('Error applying fixes.\n', file=sys.stderr) | ||
traceback.print_exc() | ||
return_code=1 | ||
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if tmpdir: | ||
shutil.rmtree(tmpdir) | ||
sys.exit(return_code) | ||
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if __name__ == '__main__': | ||
main() |
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