.ycm_extra_conf.py

# This file is NOT licensed under the GPLv3, which is the license for the rest
# of YouCompleteMe.
#
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# This is free and unencumbered software released into the public domain.
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import os
import json
import ycm_core
import logging


_logger = logging.getLogger(__name__)


def DirectoryOfThisScript():
  return os.path.dirname( os.path.abspath( __file__ ) )


# These are the compilation flags that will be used in case there's no
# compilation database set (by default, one is not set).
# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.
flags = [
 '-x', 'c++', '-std=c++17', '-I/home/elshize/dev/irkit/include',
]

conan_flags = json.loads(open("conan_ycm_flags.json", "r").read())

flags.extend(conan_flags["flags"])
flags.extend(conan_flags["defines"])
flags.extend(conan_flags["includes"])


# Set this to the absolute path to the folder (NOT the file!) containing the
# compile_commands.json file to use that instead of 'flags'. See here for
# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
#
# You can get CMake to generate this file for you by adding:
#   set( CMAKE_EXPORT_COMPILE_COMMANDS 1 )
# to your CMakeLists.txt file.
#
# Most projects will NOT need to set this to anything; you can just change the
# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
compilation_database_folder = os.path.join(DirectoryOfThisScript(), 'Debug')

if os.path.exists( compilation_database_folder ):
  database = ycm_core.CompilationDatabase( compilation_database_folder )
  if not database.DatabaseSuccessfullyLoaded():
      _logger.warn("Failed to load database")
      database = None
else:
  database = None

SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]

def GetAbsolutePath(include_path, working_directory):
    if os.path.isabs(include_path):
        return include_path
    return os.path.join(working_directory, include_path)


def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
  if not working_directory:
    return list( flags )
  new_flags = []
  make_next_absolute = False
  path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
  for flag in flags:
    new_flag = flag

    if make_next_absolute:
      make_next_absolute = False
      new_flag = GetAbsolutePath(flag, working_directory)

    for path_flag in path_flags:
      if flag == path_flag:
        make_next_absolute = True
        break

      if flag.startswith( path_flag ):
        path = flag[ len( path_flag ): ]
        new_flag = flag[:len(path_flag)] + GetAbsolutePath(path, working_directory)
        break

    if new_flag:
      new_flags.append( new_flag )
  return new_flags


def IsHeaderFile( filename ):
  extension = os.path.splitext( filename )[ 1 ]
  return extension.lower() in [ '.h', '.hxx', '.hpp', '.hh' ]


def GetCompilationInfoForFile( filename ):
  # The compilation_commands.json file generated by CMake does not have entries
  # for header files. So we do our best by asking the db for flags for a
  # corresponding source file, if any. If one exists, the flags for that file
  # should be good enough.
  if IsHeaderFile( filename ):
    basename = os.path.splitext( filename )[ 0 ]
    for extension in SOURCE_EXTENSIONS:
      replacement_file = basename + extension
      if os.path.exists( replacement_file ):
        compilation_info = database.GetCompilationInfoForFile( replacement_file )
        if compilation_info.compiler_flags_:
          return compilation_info
    return None
  return database.GetCompilationInfoForFile( filename )


def FlagsForFile( filename, **kwargs ):
  relative_to = None
  compiler_flags = None

  if database:
    # Bear in mind that compilation_info.compiler_flags_ does NOT return a
    # python list, but a "list-like" StringVec object
    compilation_info = GetCompilationInfoForFile( filename )
    if compilation_info is None:
      relative_to = DirectoryOfThisScript()
      compiler_flags = flags
    else:
      relative_to = compilation_info.compiler_working_dir_
      compiler_flags = compilation_info.compiler_flags_

  else:
    relative_to = DirectoryOfThisScript()
    compiler_flags = flags

  final_flags = MakeRelativePathsInFlagsAbsolute( compiler_flags, relative_to )
  for flag in final_flags:
      if flag.startswith("-W"):
          final_flags.remove(flag)
  _logger.info("Final flags for %s are %s" % (filename, ' '.join(final_flags)))

  return {
    'flags': final_flags + ["-I/usr/include", "-I/usr/include/c++/8"],
    'do_cache': True
  }