128 lines
3.7 KiB
Python
128 lines
3.7 KiB
Python
#!/usr/bin/env python
|
|
#
|
|
# Copyright (C) 2011, 2012 Strahinja Val Markovic <val@markovic.io>
|
|
#
|
|
# This file is part of YouCompleteMe.
|
|
#
|
|
# YouCompleteMe 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.
|
|
#
|
|
# YouCompleteMe 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 YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import imp
|
|
import os
|
|
import ycm_core
|
|
import random
|
|
import string
|
|
|
|
CLANG_OPTIONS_FILENAME = '.ycm_clang_options.py'
|
|
|
|
class Flags( object ):
|
|
def __init__( self ):
|
|
# It's caches all the way down...
|
|
self.flags_for_file = {}
|
|
self.flags_module_for_file = {}
|
|
self.flags_module_for_flags_module_file = {}
|
|
self.special_clang_flags = _SpecialClangIncludes()
|
|
|
|
|
|
def FlagsForFile( self, filename ):
|
|
try:
|
|
return self.flags_for_file[ filename ]
|
|
except KeyError:
|
|
flags_module = self.FlagsModuleForFile( filename )
|
|
if not flags_module:
|
|
return ycm_core.StringVec()
|
|
|
|
results = flags_module.FlagsForFile( filename )
|
|
results[ 'flags' ] += self.special_clang_flags
|
|
sanitized_flags = _SanitizeFlags( results[ 'flags' ] )
|
|
|
|
if results[ 'do_cache' ]:
|
|
self.flags_for_file[ filename ] = sanitized_flags
|
|
return sanitized_flags
|
|
|
|
|
|
def FlagsModuleForFile( self, filename ):
|
|
try:
|
|
return self.flags_module_for_file[ filename ]
|
|
except KeyError:
|
|
flags_module_file = _FlagsModuleSourceFileForFile( filename )
|
|
if not flags_module_file:
|
|
return None
|
|
|
|
try:
|
|
flags_module = self.flags_module_for_flags_module_file[
|
|
flags_module_file ]
|
|
except KeyError:
|
|
flags_module = imp.load_source( _RandomName(), flags_module_file )
|
|
self.flags_module_for_flags_module_file[
|
|
flags_module_file ] = flags_module
|
|
|
|
self.flags_module_for_file[ filename ] = flags_module
|
|
return flags_module
|
|
|
|
|
|
|
|
def _FlagsModuleSourceFileForFile( filename ):
|
|
"""For a given filename, finds its nearest CLANG_OPTIONS_FILENAME file that
|
|
will compute the flags necessary to compile the file. Returns None if no
|
|
CLANG_OPTIONS_FILENAME file could be found."""
|
|
|
|
parent_folder = os.path.dirname( filename )
|
|
old_parent_folder = ''
|
|
|
|
while True:
|
|
current_file = os.path.join( parent_folder, CLANG_OPTIONS_FILENAME )
|
|
if os.path.exists( current_file ):
|
|
return current_file
|
|
|
|
old_parent_folder = parent_folder
|
|
parent_folder = os.path.dirname( parent_folder )
|
|
|
|
if parent_folder == old_parent_folder:
|
|
return None
|
|
|
|
|
|
def _RandomName():
|
|
"""Generates a random module name."""
|
|
return ''.join( random.choice( string.ascii_lowercase ) for x in range( 15 ) )
|
|
|
|
|
|
def _SanitizeFlags( flags ):
|
|
"""Drops unsafe flags. Currently these are only -arch flags; they tend to
|
|
crash libclang."""
|
|
|
|
sanitized_flags = []
|
|
saw_arch = False
|
|
for i, flag in enumerate( flags ):
|
|
if flag == '-arch':
|
|
saw_arch = True
|
|
continue
|
|
elif flag.startswith( '-arch' ):
|
|
continue
|
|
elif saw_arch:
|
|
saw_arch = False
|
|
continue
|
|
|
|
sanitized_flags.append( flag )
|
|
|
|
vector = ycm_core.StringVec()
|
|
for flag in sanitized_flags:
|
|
vector.append( flag )
|
|
return vector
|
|
|
|
|
|
def _SpecialClangIncludes():
|
|
libclang_dir = os.path.dirname( ycm_core.__file__ )
|
|
path_to_includes = os.path.join( libclang_dir, 'clang_includes' )
|
|
return [ '-I', path_to_includes ]
|