Index: tools/clang/scripts/generate_win_compdb.py |
diff --git a/tools/clang/scripts/generate_win_compdb.py b/tools/clang/scripts/generate_win_compdb.py |
new file mode 100755 |
index 0000000000000000000000000000000000000000..32f5f753c5316b3489249ae57379a64b92855d29 |
--- /dev/null |
+++ b/tools/clang/scripts/generate_win_compdb.py |
@@ -0,0 +1,83 @@ |
+#!/usr/bin/env python |
+# Copyright 2014 The Chromium Authors. All rights reserved. |
+# Use of this source code is governed by a BSD-style license that can be |
+# found in the LICENSE file. |
+ |
+""" |
+Clang tools on Windows are still a bit busted. The tooling can't handle |
+backslashes in paths, doesn't understand how to read .rsp files, etc. In |
+addition, ninja generates compile commands prefixed with the ninja msvc helper, |
+which also confuses clang. This script generates a compile DB that should mostly |
+work until clang tooling can be improved upstream. |
+""" |
+ |
+import os |
+import re |
+import json |
+import shlex |
+import subprocess |
+import sys |
+ |
+ |
+_NINJA_MSVC_WRAPPER = re.compile('ninja -t msvc -e .+? -- ') |
+_RSP_RE = re.compile(r' (@(.+?\.rsp)) ') |
+ |
+ |
+def _ProcessEntry(e): |
+ # Strip off the ninja -t msvc wrapper. |
+ e['command'] = _NINJA_MSVC_WRAPPER.sub('', e['command']) |
+ |
+ # Prepend --driver-mode=cl to the command's arguments. |
+ # Escape backslashes so shlex doesn't try to interpret them. |
+ escaped_command = e['command'].replace('\\', '\\\\') |
+ split_command = shlex.split(escaped_command) |
+ e['command'] = ' '.join( |
+ split_command[:1] + ['--driver-mode=cl'] + split_command[1:]) |
+ |
+ # Expand the contents of the response file, if any. |
+ # http://llvm.org/bugs/show_bug.cgi?id=21634 |
+ try: |
+ match = _RSP_RE.search(e['command']) |
+ rsp_path = os.path.join(e['directory'], match.group(2)) |
+ rsp_contents = file(rsp_path).read() |
+ e['command'] = ''.join([ |
+ e['command'][:match.start(1)], |
+ rsp_contents, |
+ e['command'][match.end(1):]]) |
+ except IOError: |
+ pass |
+ |
+ # TODO(dcheng): This should be implemented in Clang tooling. |
+ # http://llvm.org/bugs/show_bug.cgi?id=19687 |
+ # Finally, use slashes instead of backslashes to avoid bad escaping by the |
+ # tooling. This should really only matter for command, but we do it for all |
+ # keys for consistency. |
+ e['directory'] = e['directory'].replace('\\', '/') |
+ e['command'] = e['command'].replace('\\', '/') |
+ e['file'] = e['file'].replace('\\', '/') |
+ |
+ return e |
+ |
+ |
+def main(argv): |
+ # First, generate the compile database. |
+ print 'Generating compile DB with ninja...' |
+ compile_db_as_json = subprocess.check_output(shlex.split( |
+ 'ninja -C out/Debug -t compdb cc cxx objc objcxx')) |
+ |
+ compile_db = json.loads(compile_db_as_json) |
+ print 'Read in %d entries from the compile db' % len(compile_db) |
+ compile_db = [_ProcessEntry(e) for e in compile_db] |
+ original_length = len(compile_db) |
+ |
+ # Filter out NaCl stuff. The clang tooling chokes on them. |
+ compile_db = [e for e in compile_db if '_nacl.cc.pdb' not in e['command'] |
+ and '_nacl_win64.cc.pdb' not in e['command']] |
+ print 'Filtered out %d entries...' % (original_length - len(compile_db)) |
+ f = file('out/Debug/compile_commands.json', 'w') |
+ f.write(json.dumps(compile_db, indent=2)) |
+ print 'Done!' |
+ |
+ |
+if __name__ == '__main__': |
+ sys.exit(main(sys.argv[1:])) |