Page Menu
Home
c4science
Search
Configure Global Search
Log In
Files
F92056135
run-clang-tidy
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Award Token
Subscribers
None
File Metadata
Details
File Info
Storage
Attached
Created
Sat, Nov 16, 23:57
Size
11 KB
Mime Type
text/x-python
Expires
Mon, Nov 18, 23:57 (2 d)
Engine
blob
Format
Raw Data
Handle
22318808
Attached To
rAKA akantu
run-clang-tidy
View Options
#!/usr/bin/env python3
#
#===- 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
"""
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://clang.llvm.org/docs/HowToSetupToolingForLLVM.html
"""
from __future__ import print_function
import argparse
import glob
import json
import multiprocessing
import os
import re
import shutil
import subprocess
import sys
import tempfile
import threading
import traceback
try:
import yaml
except ImportError:
yaml = None
is_py2 = sys.version[0] == '2'
if is_py2:
import Queue as queue
else:
import queue as queue
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)
def make_absolute(f, directory):
if os.path.isabs(f):
return f
return os.path.normpath(os.path.join(directory, f))
def get_tidy_invocation(f, clang_tidy_binary, checks, tmpdir, build_path,
header_filter, allow_enabling_alpha_checkers,
extra_arg, extra_arg_before, quiet, config):
"""Gets a command line for clang-tidy."""
start = [clang_tidy_binary]
if allow_enabling_alpha_checkers:
start.append('-allow-enabling-analyzer-alpha-checkers')
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
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, []))
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()
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)
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)
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.allow_enabling_alpha_checkers,
args.extra_arg, args.extra_arg_before,
args.quiet, args.config)
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()
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('-allow-enabling-alpha-checkers',
action='store_true', help='allow alpha checkers from '
'clang-analyzer.')
parser.add_argument('-clang-tidy-binary', metavar='PATH',
default='clang-tidy-11',
help='path to clang-tidy binary')
parser.add_argument('-clang-apply-replacements-binary', metavar='PATH',
default='clang-apply-replacements-11',
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()
db_path = 'compile_commands.json'
if args.build_path is not None:
build_path = args.build_path
else:
# Find our database
build_path = find_compilation_database(db_path)
try:
invocation = [args.clang_tidy_binary, '-list-checks']
if args.allow_enabling_alpha_checkers:
invocation.append('-allow-enabling-analyzer-alpha-checkers')
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)
# 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]
max_task = args.j
if max_task == 0:
max_task = multiprocessing.cpu_count()
tmpdir = None
if args.fix or (yaml and args.export_fixes):
check_clang_apply_replacements_binary(args)
tmpdir = tempfile.mkdtemp()
# Build up a big regexy filter from all command line arguments.
file_name_re = re.compile('|'.join(args.files))
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()
# Fill the queue with files.
for name in files:
if file_name_re.search(name):
task_queue.put(name)
# Wait for all threads to be done.
task_queue.join()
if len(failed_files):
return_code = 1
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)
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
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
if tmpdir:
shutil.rmtree(tmpdir)
sys.exit(return_code)
if __name__ == '__main__':
main()
Event Timeline
Log In to Comment