.ycm_extra_conf.py

# This file is NOT licensed under the GPLv3, which is the license for the rest
# of YouCompleteMe.
#
# Here's the license text for this file:
#
# This is free and unencumbered software released into the public domain.
#
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# distribute this software, either in source code form or as a compiled
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# means.
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# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
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# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
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from distutils.sysconfig import get_python_inc
import os
import platform
import os.path as p
import subprocess

import os
import os.path

class IncludePathsFinder:
    def __init__(self):
        self.include_dirs = []

    def _is_hex_char(self, c):
        return c >= 'a' and c <= 'f' or c >= '0' and c <= '9'

    def _is_package(self, package_dir):
        if len(package_dir) != 40:
            return False

        for c in package_dir:
            char_allowed = self._is_hex_char(c)

            if not char_allowed:
                return False

        return True

    def _find_lib(self, lib_path):
        for version_dir in os.listdir(lib_path):
            package_parent_dir = os.path.join(*[lib_path, version_dir, '_', '_', 'package'])

            if os.path.isdir(package_parent_dir):
                for package in os.listdir(package_parent_dir):
                    if self._is_package(package):
                        include_dir = os.path.join(*[package_parent_dir, package, 'include'])

                        if os.path.isdir(include_dir):
                            self.include_dirs.append(include_dir)

    def find(self):
        curr = os.getcwd()
        conan_path = os.path.join(os.getenv('HOME'), '.conan/data')

        for file_name in os.listdir(conan_path):
            lib_path = os.path.join(conan_path, file_name)
            self._find_lib(lib_path)

        return self.include_dirs

DIR_OF_THIS_SCRIPT = p.abspath( p.dirname( __file__ ) )
DIR_OF_THIRD_PARTY = p.join( DIR_OF_THIS_SCRIPT, 'third_party' )
DIR_OF_WATCHDOG_DEPS = p.join( DIR_OF_THIRD_PARTY, 'watchdog_deps' )
SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]

database = None
conan_paths = IncludePathsFinder().find()

# 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 = [
'-Wall',
'-Wextra',
'-Werror',
'-Wno-long-long',
'-Wno-variadic-macros',
'-fexceptions',
'-DNDEBUG',
# You 100% do NOT need -DUSE_CLANG_COMPLETER and/or -DYCM_EXPORT in your flags;
# only the YCM source code needs it.
'-DUSE_CLANG_COMPLETER',
'-DYCM_EXPORT=',
# THIS IS IMPORTANT! Without the '-x' flag, Clang won't know which language to
# use when compiling headers. So it will guess. Badly. So C++ headers will be
# compiled as C headers. You don't want that so ALWAYS specify the '-x' flag.
# For a C project, you would set this to 'c' instead of 'c++'.
'-x',
'c++',
'-isystem',
'cpp/pybind11',
'-isystem',
'cpp/whereami',
'-isystem',
'cpp/BoostParts',
'-isystem',
get_python_inc(),
'-isystem',
'cpp/llvm/include',
'-isystem',
'cpp/llvm/tools/clang/include',
'-I',
'cpp/ycm',
'-I',
'cpp/ycm/ClangCompleter',
'-isystem',
'cpp/ycm/tests/gmock/gtest',
'-isystem',
'cpp/ycm/tests/gmock/gtest/include',
'-isystem',
'cpp/ycm/tests/gmock',
'-isystem',
'cpp/ycm/tests/gmock/include',
'-isystem',
'cpp/ycm/benchmarks/benchmark/include',
]

if conan_paths:
    for conan_path in conan_paths:
        flags.append('-I')
        flags.append(conan_path)

# Clang automatically sets the '-std=' flag to 'c++14' for MSVC 2015 or later,
# which is required for compiling the standard library, and to 'c++11' for older
# versions.
if platform.system() != 'Windows':
  flags.append( '-std=c++11' )


# 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 = ''


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


def FindCorrespondingSourceFile( filename ):
  if IsHeaderFile( filename ):
    basename = p.splitext( filename )[ 0 ]
    for extension in SOURCE_EXTENSIONS:
      replacement_file = basename + extension
      if p.exists( replacement_file ):
        return replacement_file
  return filename


def PathToPythonUsedDuringBuild():
  try:
    filepath = p.join( DIR_OF_THIS_SCRIPT, 'PYTHON_USED_DURING_BUILDING' )
    with open( filepath ) as f:
      return f.read().strip()
  except OSError:
    return None


def Settings( **kwargs ):
  # Do NOT import ycm_core at module scope.
  import ycm_core

  global database
  if database is None and p.exists( compilation_database_folder ):
    database = ycm_core.CompilationDatabase( compilation_database_folder )

  language = kwargs[ 'language' ]

  if language == 'cfamily':
    # If the file is a header, try to find the corresponding source file and
    # retrieve its flags from the compilation database if using one. This is
    # necessary since compilation databases don't have entries for header files.
    # In addition, use this source file as the translation unit. This makes it
    # possible to jump from a declaration in the header file to its definition
    # in the corresponding source file.
    filename = FindCorrespondingSourceFile( kwargs[ 'filename' ] )

    if not database:
      return {
        'flags': flags,
        'include_paths_relative_to_dir': DIR_OF_THIS_SCRIPT,
        'override_filename': filename
      }

    compilation_info = database.GetCompilationInfoForFile( filename )
    if not compilation_info.compiler_flags_:
      return {}

    # Bear in mind that compilation_info.compiler_flags_ does NOT return a
    # python list, but a "list-like" StringVec object.
    final_flags = list( compilation_info.compiler_flags_ )

    # NOTE: This is just for YouCompleteMe; it's highly likely that your project
    # does NOT need to remove the stdlib flag. DO NOT USE THIS IN YOUR
    # ycm_extra_conf IF YOU'RE NOT 100% SURE YOU NEED IT.
    try:
      final_flags.remove( '-stdlib=libc++' )
    except ValueError:
      pass

    return {
      'flags': final_flags,
      'include_paths_relative_to_dir': compilation_info.compiler_working_dir_,
      'override_filename': filename
    }

  if language == 'python':
    return {
      'interpreter_path': PathToPythonUsedDuringBuild()
    }

  return {}


def PythonSysPath( **kwargs ):
  sys_path = kwargs[ 'sys_path' ]

  interpreter_path = kwargs[ 'interpreter_path' ]
  major_version = subprocess.check_output( [
    interpreter_path, '-c', 'import sys; print( sys.version_info[ 0 ] )' ]
  ).rstrip().decode( 'utf8' )

  sys_path[ 0:0 ] = [ p.join( DIR_OF_THIS_SCRIPT ),
                      p.join( DIR_OF_THIRD_PARTY, 'bottle' ),
                      p.join( DIR_OF_THIRD_PARTY, 'cregex',
                              'regex_{}'.format( major_version ) ),
                      p.join( DIR_OF_THIRD_PARTY, 'frozendict' ),
                      p.join( DIR_OF_THIRD_PARTY, 'jedi_deps', 'jedi' ),
                      p.join( DIR_OF_THIRD_PARTY, 'jedi_deps', 'parso' ),
                      p.join( DIR_OF_THIRD_PARTY, 'requests_deps', 'requests' ),
                      p.join( DIR_OF_THIRD_PARTY, 'requests_deps',
                                                  'urllib3',
                                                  'src' ),
                      p.join( DIR_OF_THIRD_PARTY, 'requests_deps',
                                                  'chardet' ),
                      p.join( DIR_OF_THIRD_PARTY, 'requests_deps',
                                                  'certifi' ),
                      p.join( DIR_OF_THIRD_PARTY, 'requests_deps',
                                                  'idna' ),
                      p.join( DIR_OF_WATCHDOG_DEPS, 'watchdog', 'build', 'lib3' ),
                      p.join( DIR_OF_WATCHDOG_DEPS, 'pathtools' ),
                      p.join( DIR_OF_THIRD_PARTY, 'waitress' ) ]

  sys_path.append( p.join( DIR_OF_THIRD_PARTY, 'jedi_deps', 'numpydoc' ) )
  return sys_path