.ycm_extra_conf.py.in

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import os
import ycm_core

script_dir = os.path.dirname( os.path.abspath( __file__ ) )

# These are the compilation flags that will be used in case there's no
# compilation database set (by default, one is not set).
flags = [
        '-Wall',
        '-Wextra',
        '-WC++98compat',
        '-Wno-long-long',
        '-Wno-variadic-macros',
        '-fexceptions',
        '-std=c++0x',
        '-I', '%s/src/lib' % script_dir
]


# 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. Notice that YCM itself uses that approach.
compilation_database_folder = "@CMAKE_CURRENT_BINARY_DIR@"

if compilation_database_folder:
    database = ycm_core.CompilationDatabase( compilation_database_folder )
else:
    database = None


def make_paths_in_flags_absolute( 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 FlagsForFile( filename ):
    if database:
        # Bear in mind that compilation_info.compiler_flags_ does NOT return a
        # python list, but a "list-like" StringVec object
        compilation_info = database.GetCompilationInfoForFile( filename )

        if not compilation_info.compiler_flags_:
            (base, ext) = os.path.splitext(filename)
            if ext in [".h", ".hpp"]:
                return FlagsForFile("%s.cpp" % base)

            final_flags = flags
        else:
            final_flags = make_paths_in_flags_absolute(
                    compilation_info.compiler_flags_,
                    compilation_info.compiler_working_dir_ )
    else:
        relative_to = script_dir
        final_flags = make_paths_in_flags_absolute( flags, relative_to )

    return {
        'flags': final_flags,
        'do_cache': True
    }