def _parse(self, csource):
        csource, macros = _preprocess(csource)
        # XXX: for more efficiency we would need to poke into the
        # internals of CParser...  the following registers the
        # typedefs, because their presence or absence influences the
        # parsing itself (but what they are typedef'ed to plays no role)
        ctn = _common_type_names(csource)
        typenames = []
        for name in sorted(self._declarations):
            if name.startswith('typedef '):
                name = name[8:]
                typenames.append(name)
                ctn.discard(name)
        typenames += sorted(ctn)
        #
        csourcelines = [typename % 'typedef int %s;' for typename in typenames]
        csourcelines.append('typedef int __dotdotdot__;')
        csourcelines.append(csource)
        csource = '\n'.join(csourcelines)
        if lock is not None:
            lock.acquire()     # pycparser is not thread-safe...
        try:
            ast = _get_parser().parse(csource)
        except pycparser.c_parser.ParseError as e:
            self.convert_pycparser_error(e, csource)
        finally:
            if lock is not None:
                lock.release()
        # csource will be used to find buggy source text
        return ast, macros, csource
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/cffi-1.5.2/cffi/cparser.py/Parser._parse/swapped operands of `%`