forked from OSchip/llvm-project
116 lines
3.6 KiB
Python
116 lines
3.6 KiB
Python
import os
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import ycm_core
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# These are the compilation flags that will be used in case there's no
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# compilation database set (by default, one is not set).
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# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.
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flags = [
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'-Wall',
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'-Werror',
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'-pedantic-errors',
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'-std=c++0x',
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'-fno-strict-aliasing',
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'-O3',
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'-DNDEBUG',
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# ...and the same thing goes for the magic -x option which specifies the
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# language that the files to be compiled are written in. This is mostly
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# relevant for c++ headers.
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# For a C project, you would set this to 'c' instead of 'c++'.
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'-x', 'c++',
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'-I', 'include',
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'-isystem', '/usr/include',
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'-isystem', '/usr/local/include',
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]
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# Set this to the absolute path to the folder (NOT the file!) containing the
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# compile_commands.json file to use that instead of 'flags'. See here for
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# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
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#
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# Most projects will NOT need to set this to anything; you can just change the
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# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
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compilation_database_folder = ''
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if os.path.exists( compilation_database_folder ):
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database = ycm_core.CompilationDatabase( compilation_database_folder )
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else:
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database = None
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SOURCE_EXTENSIONS = [ '.cc' ]
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def DirectoryOfThisScript():
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return os.path.dirname( os.path.abspath( __file__ ) )
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def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
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if not working_directory:
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return list( flags )
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new_flags = []
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make_next_absolute = False
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path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
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for flag in flags:
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new_flag = flag
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if make_next_absolute:
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make_next_absolute = False
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if not flag.startswith( '/' ):
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new_flag = os.path.join( working_directory, flag )
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for path_flag in path_flags:
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if flag == path_flag:
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make_next_absolute = True
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break
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if flag.startswith( path_flag ):
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path = flag[ len( path_flag ): ]
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new_flag = path_flag + os.path.join( working_directory, path )
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break
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if new_flag:
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new_flags.append( new_flag )
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return new_flags
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def IsHeaderFile( filename ):
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extension = os.path.splitext( filename )[ 1 ]
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return extension in [ '.h', '.hxx', '.hpp', '.hh' ]
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def GetCompilationInfoForFile( filename ):
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# The compilation_commands.json file generated by CMake does not have entries
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# for header files. So we do our best by asking the db for flags for a
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# corresponding source file, if any. If one exists, the flags for that file
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# should be good enough.
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if IsHeaderFile( filename ):
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basename = os.path.splitext( filename )[ 0 ]
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for extension in SOURCE_EXTENSIONS:
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replacement_file = basename + extension
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if os.path.exists( replacement_file ):
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compilation_info = database.GetCompilationInfoForFile(
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replacement_file )
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if compilation_info.compiler_flags_:
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return compilation_info
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return None
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return database.GetCompilationInfoForFile( filename )
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def FlagsForFile( filename, **kwargs ):
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if database:
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# Bear in mind that compilation_info.compiler_flags_ does NOT return a
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# python list, but a "list-like" StringVec object
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compilation_info = GetCompilationInfoForFile( filename )
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if not compilation_info:
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return None
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final_flags = MakeRelativePathsInFlagsAbsolute(
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compilation_info.compiler_flags_,
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compilation_info.compiler_working_dir_ )
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else:
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relative_to = DirectoryOfThisScript()
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final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )
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return {
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'flags': final_flags,
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'do_cache': True
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}
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