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