.ycm_extra_conf.py

   1 # This Source Code Form is subject to the terms of the Mozilla Public
   2 # License, v. 2.0. If a copy of the MPL was not distributed with this
   3 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   4
   5 from __future__ import absolute_import, print_function
   6 import json
   7 import os
   8 import shlex
   9 import subprocess
  10 import sys
  11
  12 old_bytecode = sys.dont_write_bytecode
  13 sys.dont_write_bytecode = True
  14
  15 path = os.path.abspath(os.path.join(os.path.dirname(__file__), "mach"))
  16
  17 # If mach is not here, we're on the objdir go to the srcdir.
  18 if not os.path.exists(path):
  19     with open(os.path.join(os.path.dirname(__file__), "mozinfo.json")) as info:
  20         config = json.loads(info.read())
  21     path = os.path.join(config["topsrcdir"], "mach")
  22
  23 sys.dont_write_bytecode = old_bytecode
  24
  25
  26 def _is_likely_cpp_header(filename):
  27     if not filename.endswith(".h"):
  28         return False
  29
  30     if filename.endswith("Inlines.h") or filename.endswith("-inl.h"):
  31         return True
  32
  33     cpp_file = filename[:-1] + "cpp"
  34     return os.path.exists(cpp_file)
  35
  36
  37 def Settings(**kwargs):
  38     if kwargs["language"] == "cfamily":
  39         return FlagsForFile(kwargs["filename"])
  40     # This is useful for generic language server protocols, like rust-analyzer,
  41     # to discover the right project root instead of guessing based on where the
  42     # closest Cargo.toml is.
  43     return {
  44         "project_directory": ".",
  45     }
  46
  47
  48 def FlagsForFile(filename):
  49     output = subprocess.check_output([path, "compileflags", filename])
  50     output = output.decode("utf-8")
  51
  52     flag_list = shlex.split(output)
  53
  54     # This flag is added by Fennec for android build and causes ycmd to fail to parse the file.
  55     # Removing this flag is a workaround until ycmd starts to handle this flag properly.
  56     # https://github.com/Valloric/YouCompleteMe/issues/1490
  57     final_flags = [x for x in flag_list if not x.startswith("-march=armv")]
  58
  59     if _is_likely_cpp_header(filename):
  60         final_flags += ["-x", "c++"]
  61
  62     return {"flags": final_flags, "do_cache": True}
  63
  64
  65 if __name__ == "__main__":
  66     print(FlagsForFile(sys.argv[1]))