Replace vera++ with clang-format (#4518)

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik robert.fancsik@h-lab.eu

tools/check-format.py

@@ -0,0 +1,137 @@
+#!/usr/bin/env python
+
+# Copyright JS Foundation and other contributors, http://js.foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import print_function
+
+import argparse
+import multiprocessing
+import subprocess
+from os import path
+from glob import glob
+import sys
+import re
+
+from settings import PROJECT_DIR
+
+RE_CLANG_FORMAT_VERSION = re.compile(
+    r".*clang-format version (?P<version>\d{2})\.")
+RE_DIRECTIVE_COMMENT = re.compile(r"^#\s*(else|endif)$", re.MULTILINE)
+RE_FUNCTION_NAME_COMMENT = re.compile(
+    r"^\}(?!(?:\s\/\*\s\w+\s\*\/$|\s?\w*;))", re.MULTILINE)
+
+CLANG_FORMAT_MIN_VERSION = 10
+
+FOLDERS = ["jerry-core",
+           "jerry-ext",
+           "jerry-port",
+           "jerry-math",
+           "jerry-main",
+           "tests/unit-core",
+           "tests/unit-ext",
+           "tests/unit-math"]
+
+
+def get_arguments():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--fix', action='store_true', dest='fix',
+                        help='fix source code stlye')
+    parser.add_argument('--clang-format', dest='clang_format', default='clang-format-%d' % CLANG_FORMAT_MIN_VERSION,
+                        help='path to clang-format executable')
+
+    script_args = parser.parse_args()
+    return script_args
+
+
+def check_clang_format(args, source_file_name):
+    cmd = [args.clang_format]
+
+    if args.fix:
+        cmd.append('-i')
+    else:
+        cmd.extend(['--dry-run', '--Werror'])
+
+    cmd.append(source_file_name)
+
+    proc = subprocess.Popen(cmd, stdout=subprocess.PIPE,
+                            stderr=subprocess.PIPE)
+    _, error = proc.communicate()
+
+    if proc.returncode == 0:
+        return 0
+
+    print(error.decode('utf8'))
+
+    return 1
+
+
+def check_comments(regexps, source_file_name):
+    failed = 0
+
+    with open(source_file_name, encoding='utf-8') as source_file:
+        data = source_file.read()
+
+        for regexp in regexps:
+            for match in re.finditer(regexp, data):
+                failed += 1
+                print("Invalid/Missing comment in %s:%d" %
+                      (source_file_name, data.count('\n', 0, match.start()) + 1))
+
+    return 1 if failed else 0
+
+
+def run_pass(pool, process, process_args):
+    return sum(pool.starmap(process, process_args))
+
+
+def check_clang_format_version(args):
+    try:
+        out = subprocess.check_output([args.clang_format, '--version'])
+        match = RE_CLANG_FORMAT_VERSION.match(out.decode('utf8'))
+
+        if match and int(match.group('version')) >= CLANG_FORMAT_MIN_VERSION:
+            return 0
+    except OSError:
+        pass
+
+    return 1
+
+
+def main(args):
+    if check_clang_format_version(args) != 0:
+        print("clang-format >= %d is not installed." %
+              CLANG_FORMAT_MIN_VERSION)
+        return 1
+
+    pool = multiprocessing.Pool()
+    failed = 0
+
+    for folder in FOLDERS:
+        # pylint: disable=unexpected-keyword-arg
+        files = sum(([glob(path.join(PROJECT_DIR, folder, "**/*.%s" % e), recursive=True)
+                      for e in ['c', 'h']]), [])
+
+        failed += run_pass(pool, check_clang_format,
+                           [(args, sourece_file) for sourece_file in files])
+        failed += run_pass(pool, check_comments,
+                           [([RE_DIRECTIVE_COMMENT, RE_FUNCTION_NAME_COMMENT], sourece_file) for sourece_file in files])
+
+    pool.close()
+
+    return 1 if failed else 0
+
+
+if __name__ == "__main__":
+    sys.exit(main(get_arguments()))