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A modified version of run-clang-tidy.py that is meant to be used in conjunction with pronto-clang_tidy runner
Raw
README.md
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LICENSE.TXT
==============================================================================
LLVM Release License
==============================================================================
University of Illinois/NCSA
Open Source License
Copyright (c) 2007-2016 University of Illinois at Urbana-Champaign.
All rights reserved.
Developed by:
LLVM Team
University of Illinois at Urbana-Champaign
http://llvm.org
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal with
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimers.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimers in the
documentation and/or other materials provided with the distribution.
* Neither the names of the LLVM Team, University of Illinois at
Urbana-Champaign, nor the names of its contributors may be used to
endorse or promote products derived from this Software without specific
prior written permission.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
SOFTWARE.
==============================================================================
The LLVM software contains code written by third parties. Such software will
have its own individual LICENSE.TXT file in the directory in which it appears.
This file will describe the copyrights, license, and restrictions which apply
to that code.
The disclaimer of warranty in the University of Illinois Open Source License
applies to all code in the LLVM Distribution, and nothing in any of the
other licenses gives permission to use the names of the LLVM Team or the
University of Illinois to endorse or promote products derived from this
Software.
The following pieces of software have additional or alternate copyrights,
licenses, and/or restrictions:
Program Directory
------- ---------
clang-tidy clang-tidy/cert
clang-tidy clang-tidy/hicpp
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run-clang-tidy.py
#!/usr/bin/env python
#
#===- run-clang-tidy.py - Parallel clang-tidy runner ---------*- python -*--===#
#
# The LLVM Compiler Infrastructure
#
# This file is distributed under the University of Illinois Open Source
# License. See LICENSE.TXT for details.
#
#===------------------------------------------------------------------------===#
# 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
import yaml
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, extra_arg, extra_arg_before, quiet):
"""Gets a command line for clang-tidy."""
start = [clang_tidy_binary]
if header_filter is not None:
start.append('-header-filter=' + header_filter)
else:
# Show warnings in all in-project headers by default.
start.append('-header-filter=^' + build_path + '/.*')
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')
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, write_to_file_queue):
"""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)
sys.stdout.write(' '.join(invocation) + '\n')
stdout = subprocess.check_output(invocation)
if args.output_file is not None:
write_to_file_queue.put(stdout)
queue.task_done()
# based on https://stackoverflow.com/a/11984760
class WriteToFileThread(threading.Thread):
def __init__(self, filename, queue):
threading.Thread.__init__(self)
self.queue = queue
self.filename = filename
def run(self):
while True:
output = self.queue.get()
sys.stdout.write(output)
f = open(self.filename, 'a')
f.write(output)
f.close()
self.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('-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('-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.')
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('-o', dest='output_file', default='clang-tidy.out',
help='Save warnings to file')
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']
invocation.append('-p=' + build_path)
if args.checks:
invocation.append('-checks=' + args.checks)
invocation.append('-')
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 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))
try:
# Spin up a bunch of tidy-launching threads.
task_queue = queue.Queue(max_task)
write_to_file_queue = queue.Queue();
for _ in range(max_task):
t = threading.Thread(target=run_tidy,
args=(args, tmpdir, build_path, task_queue, write_to_file_queue))
t.daemon = True
t.start()
write_to_file_thread = WriteToFileThread(args.output_file, write_to_file_queue)
write_to_file_thread.daemon = True
write_to_file_thread.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()
write_to_file_queue.join()
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)
return_code = 0
if 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()
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