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.ycm_extra_conf.py
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.ycm_extra_conf.py
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# Copyright (C) 2014 Google Inc.
#
# This file is part of ycmd.
#
# ycmd is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# ycmd is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with ycmd. If not, see <http://www.gnu.org/licenses/>.
import os
import ycm_core
import glob
# 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',
'-fexceptions',
'-DNDEBUG',
# THIS IS IMPORTANT! Without a '-std=<something>' 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
# a '-std=<something>'.
# For a C project, you would set this to something like 'c99' instead of
# 'c++11'.
'-std=c++11',
# ...and the same thing goes for the magic -x option which specifies the
# language that the files to be compiled are written in. This is mostly
# relevant for c++ headers.
# For a C project, you would set this to 'c' instead of 'c++'.
'-x',
'c++',
'-isystem',
'/usr/include',
'-isystem',
'/usr/local/include',
'-isystem',
]
debug = False
debug_out_file = open('/tmp/ycm_debug_file.log', 'w+')
def debug_out(string):
global debug_out
if debug:
debug_out_file.write(string + '\n')
debug_out_file.flush()
# 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
#
# Most projects will NOT need to set this to anything; you can just change the
# 'flags' list of compilation flags.
compilation_database_folder = ''
g_cwd = ''
#debug_output = open('debug.txt', 'w')
if os.path.exists( compilation_database_folder ):
database = ycm_core.CompilationDatabase( compilation_database_folder )
else:
database = None
SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]
def DirectoryOfThisScript():
return os.path.dirname( os.path.abspath( __file__ ) )
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
if not flag.startswith( '/' ):
new_flag = os.path.join( working_directory, flag )
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 = path_flag + os.path.join( working_directory, path )
break
if new_flag:
new_flags.append( new_flag )
return new_flags
def IsHeaderFile( filename ):
extension = os.path.splitext( filename )[ 1 ]
return extension 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 findProjectDirectory(directory):
debug_out("findProjectDirectory...")
cur_dir = directory
project_dir = directory
while cur_dir:
debug_out("testing " + cur_dir)
cmake_lists_file = os.path.join(cur_dir, 'CMakeLists.txt')
if os.path.exists(cmake_lists_file):
project_dir = cur_dir
(new_dir, head) = os.path.split(cur_dir)
if new_dir == cur_dir:
break
cur_dir = new_dir
debug_out('using project dir ' + project_dir)
return project_dir
def locateDatabase(directory):
project_dir = findProjectDirectory(directory)
if not project_dir:
return None
build_types = [
'debug',
'Debug',
'release',
'Release',
'RelWithDebInfo',
'relwithdebinfo',
'minsizerel',
'MinSizeRel',
'build-*',
]
possible_build_dirs = [
'build',
'Build',
'.',
'..'
]
for build_dir_prefix in possible_build_dirs:
build_dir_base = os.path.join(project_dir, build_dir_prefix)
if not os.path.exists(build_dir_base):
continue
for build_type in build_types:
full_build_dir = os.path.join(build_dir_base, build_type)
debug_out("Testing build root dir " + full_build_dir)
paths = glob.glob(full_build_dir)
for path in paths:
debug_out("Checking build dir" + path)
database_file = os.path.join(path, 'compile_commands.json')
if os.path.exists(database_file):
return os.path.normpath(path)
return None
# This is the entry point; this function is called by ycmd to produce flags for
# a file.
def FlagsForFile( filename, **kwargs ):
global g_cwd
#global debug_output
global database
current_cwd = os.getcwd()
debug_out("Getting flags for file: " + str(filename))
debug_out('cwd: ' + str(current_cwd))
if g_cwd != current_cwd:
debug_out('Trying to locate database file')
g_cwd = current_cwd
try:
debug_out('Locating database...')
database_dir = locateDatabase(current_cwd)
debug_out('Got database dir: ' + database_dir)
if database_dir:
database = ycm_core.CompilationDatabase( database_dir )
debug_output('Database loaded: ' + str(database.DatabaseSuccessfullyLoaded()) + '\n')
except:
type, value, traceback = sys.exc_info()
debug_out(traceback)
debug_out('Error: ' + value )
pass
if database:
debug_out('Got a database for file: ' + filename)
# 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 not compilation_info:
debug_out('No compilation info for file: ' + filename)
return None
debug_out('Flags: ' + str(len(compilation_info.compiler_flags_)))
final_flags = MakeRelativePathsInFlagsAbsolute(
compilation_info.compiler_flags_,
compilation_info.compiler_working_dir_ )
else:
relative_to = DirectoryOfThisScript()
final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )
return {
'flags': final_flags,
'do_cache': True
}
#debug_output.close()