def __call__(self, target, source, env):
        try:
            if int(env.subst('$QT_AUTOSCAN')) == 0:
                return target, source
        except ValueError:
            pass
        try:
            debug = int(env.subst('$QT_DEBUG'))
        except ValueError:
            debug = 0

        # some shortcuts used in the scanner
        splitext = SCons.Util.splitext
        objBuilder = getattr(env, self.objBuilderName)

        # some regular expressions:
        # Q_OBJECT detection
        q_object_search = re.compile(r'[^A-Za-z0-9]Q_OBJECT[^A-Za-z0-9]')
        # cxx and c comment 'eater'
        #comment = re.compile(r'(//.*)|(/\*(([^*])|(\*[^/]))*\*/)')
        # CW: something must be wrong with the regexp. See also bug #998222
        #     CURRENTLY THERE IS NO TEST CASE FOR THAT

        # The following is kind of hacky to get builders working properly (FIXME)
        objBuilderEnv = objBuilder.env
        objBuilder.env = env
        mocBuilderEnv = env.Moc.env
        env.Moc.env = env

        # make a deep copy for the result; MocH objects will be appended
        out_sources = source[:]

        for obj in source:
            if not obj.has_builder():
                # binary obj file provided
                if debug:
                    print "scons: qt: '%s' seems to be a binary. Discarded." % str(obj)
                continue
            cpp = obj.sources[0]
            if not splitext(str(cpp))[1] in cxx_suffixes:
                if debug:
                    print "scons: qt: '%s' is no cxx file. Discarded." % str(cpp)
                # c or fortran source
                continue
            #cpp_contents = comment.sub('', cpp.get_text_contents())
            cpp_contents = cpp.get_text_contents()
            h=None
            for h_ext in header_extensions:
                # try to find the header file in the corresponding source
                # directory
                hname = splitext(cpp.name)[0] + h_ext
                h = find_file(hname, (cpp.get_dir(),), env.File)
                if h:
                    if debug:
                        print "scons: qt: Scanning '%s' (header of '%s')" % (str(h), str(cpp))
                    #h_contents = comment.sub('', h.get_text_contents())
                    h_contents = h.get_text_contents()
                    break
            if not h and debug:
                print "scons: qt: no header for '%s'." % (str(cpp))
            if h and q_object_search.search(h_contents):
                # h file with the Q_OBJECT macro found -> add moc_cpp
                moc_cpp = env.Moc(h)
                moc_o = objBuilder(moc_cpp)
                out_sources.append(moc_o)
                #moc_cpp.target_scanner = SCons.Defaults.CScan
                if debug:
                    print "scons: qt: found Q_OBJECT macro in '%s', moc'ing to '%s'" % (str(h), str(moc_cpp))
            if cpp and q_object_search.search(cpp_contents):
                # cpp file with Q_OBJECT macro found -> add moc
                # (to be included in cpp)
                moc = env.Moc(cpp)
                env.Ignore(moc, moc)
                if debug:
                    print "scons: qt: found Q_OBJECT macro in '%s', moc'ing to '%s'" % (str(cpp), str(moc))
                #moc.source_scanner = SCons.Defaults.CScan
        # restore the original env attributes (FIXME)
        objBuilder.env = objBuilderEnv
        env.Moc.env = mocBuilderEnv

        return (target, out_sources)
Smart autoscan function. Gets the list of objects for the Program
dataset/ETHPy150Open kayhayen/Nuitka/nuitka/build/inline_copy/lib/scons-2.3.2/SCons/Tool/qt.py/_Automoc.__call__