95 lines
2.9 KiB
Python
95 lines
2.9 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2011, 2012 Strahinja Val Markovic <val@markovic.io>
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#
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# This file is part of YouCompleteMe.
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#
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# YouCompleteMe is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# YouCompleteMe is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
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import ycm_core
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import os
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import vimsupport
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import extra_conf_store
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NO_EXTRA_CONF_FILENAME_MESSAGE = ('No {0} file detected, so no compile flags '
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'are available. Thus no semantic support for C/C++/ObjC/ObjC++. See the '
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'docs for details.').format( extra_conf_store.YCM_EXTRA_CONF_FILENAME )
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class Flags( object ):
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"""Keeps track of the flags necessary to compile a file.
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The flags are loaded from user-created python files (hereafter referred to as
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'modules') that contain a method FlagsForFile( filename )."""
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def __init__( self ):
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# It's caches all the way down...
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self.flags_for_file = {}
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self.special_clang_flags = _SpecialClangIncludes()
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self.no_extra_conf_file_warning_posted = False
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def FlagsForFile( self, filename ):
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try:
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return self.flags_for_file[ filename ]
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except KeyError:
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module = extra_conf_store.ModuleForSourceFile( filename )
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if not module:
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if not self.no_extra_conf_file_warning_posted:
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vimsupport.PostVimMessage( NO_EXTRA_CONF_FILENAME_MESSAGE )
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self.no_extra_conf_file_warning_posted = True
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return None
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results = module.FlagsForFile( filename )
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if not results.get( 'flags_ready', True ):
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return None
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results[ 'flags' ] += self.special_clang_flags
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sanitized_flags = _SanitizeFlags( results[ 'flags' ] )
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if results[ 'do_cache' ]:
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self.flags_for_file[ filename ] = sanitized_flags
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return sanitized_flags
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def _SanitizeFlags( flags ):
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"""Drops unsafe flags. Currently these are only -arch flags; they tend to
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crash libclang."""
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sanitized_flags = []
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saw_arch = False
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for i, flag in enumerate( flags ):
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if flag == '-arch':
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saw_arch = True
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continue
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elif flag.startswith( '-arch' ):
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continue
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elif saw_arch:
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saw_arch = False
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continue
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sanitized_flags.append( flag )
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vector = ycm_core.StringVec()
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for flag in sanitized_flags:
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vector.append( flag )
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return vector
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def _SpecialClangIncludes():
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libclang_dir = os.path.dirname( ycm_core.__file__ )
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path_to_includes = os.path.join( libclang_dir, 'clang_includes' )
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return [ '-I', path_to_includes ]
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