/usr/lib/llvm-6.0/share/clang/clang-tidy-diff.py is in clang-tidy-6.0 1:6.0-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | #!/usr/bin/env python
#
#===- clang-tidy-diff.py - ClangTidy Diff Checker ------------*- python -*--===#
#
# The LLVM Compiler Infrastructure
#
# This file is distributed under the University of Illinois Open Source
# License. See LICENSE.TXT for details.
#
#===------------------------------------------------------------------------===#
r"""
ClangTidy Diff Checker
======================
This script reads input from a unified diff, runs clang-tidy on all changed
files and outputs clang-tidy warnings in changed lines only. This is useful to
detect clang-tidy regressions in the lines touched by a specific patch.
Example usage for git/svn users:
git diff -U0 HEAD^ | clang-tidy-diff.py -p1
svn diff --diff-cmd=diff -x-U0 | \
clang-tidy-diff.py -fix -checks=-*,modernize-use-override
"""
import argparse
import json
import re
import subprocess
import sys
def main():
parser = argparse.ArgumentParser(description=
'Run clang-tidy against changed files, and '
'output diagnostics only for modified '
'lines.')
parser.add_argument('-clang-tidy-binary', metavar='PATH',
default='clang-tidy',
help='path to clang-tidy binary')
parser.add_argument('-p', metavar='NUM', default=0,
help='strip the smallest prefix containing P slashes')
parser.add_argument('-regex', metavar='PATTERN', default=None,
help='custom pattern selecting file paths to check '
'(case sensitive, overrides -iregex)')
parser.add_argument('-iregex', metavar='PATTERN', default=
r'.*\.(cpp|cc|c\+\+|cxx|c|cl|h|hpp|m|mm|inc)',
help='custom pattern selecting file paths to check '
'(case insensitive, overridden by -regex)')
parser.add_argument('-fix', action='store_true', default=False,
help='apply suggested fixes')
parser.add_argument('-checks',
help='checks filter, when not specified, use clang-tidy '
'default',
default='')
parser.add_argument('-path', 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', default=False,
help='Run clang-tidy in quiet mode')
clang_tidy_args = []
argv = sys.argv[1:]
if '--' in argv:
clang_tidy_args.extend(argv[argv.index('--'):])
argv = argv[:argv.index('--')]
args = parser.parse_args(argv)
# Extract changed lines for each file.
filename = None
lines_by_file = {}
for line in sys.stdin:
match = re.search('^\+\+\+\ \"?(.*?/){%s}([^ \t\n\"]*)' % args.p, line)
if match:
filename = match.group(2)
if filename == None:
continue
if args.regex is not None:
if not re.match('^%s$' % args.regex, filename):
continue
else:
if not re.match('^%s$' % args.iregex, filename, re.IGNORECASE):
continue
match = re.search('^@@.*\+(\d+)(,(\d+))?', line)
if match:
start_line = int(match.group(1))
line_count = 1
if match.group(3):
line_count = int(match.group(3))
if line_count == 0:
continue
end_line = start_line + line_count - 1;
lines_by_file.setdefault(filename, []).append([start_line, end_line])
if len(lines_by_file) == 0:
print("No relevant changes found.")
sys.exit(0)
line_filter_json = json.dumps(
[{"name" : name, "lines" : lines_by_file[name]} for name in lines_by_file],
separators = (',', ':'))
quote = "";
if sys.platform == 'win32':
line_filter_json=re.sub(r'"', r'"""', line_filter_json)
else:
quote = "'";
# Run clang-tidy on files containing changes.
command = [args.clang_tidy_binary]
command.append('-line-filter=' + quote + line_filter_json + quote)
if args.fix:
command.append('-fix')
if args.checks != '':
command.append('-checks=' + quote + args.checks + quote)
if args.quiet:
command.append('-quiet')
if args.build_path is not None:
command.append('-p=%s' % args.build_path)
command.extend(lines_by_file.keys())
for arg in args.extra_arg:
command.append('-extra-arg=%s' % arg)
for arg in args.extra_arg_before:
command.append('-extra-arg-before=%s' % arg)
command.extend(clang_tidy_args)
sys.exit(subprocess.call(' '.join(command), shell=True))
if __name__ == '__main__':
main()
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