termio.py 文件源码

def _handle_match(self, pattern_obj, match):
        """
        Handles a matched regex detected by :meth:`postprocess`.  It calls
        :obj:`Pattern.callback` and takes care of removing it from
        :attr:`_patterns` (if it isn't sticky).
        """
        if self._handling_match:
            # Don't process anything if we're in the middle of handling a match.
            # NOTE: This can happen when there's more than one thread,
            # processes, or PeriodicCallback going on simultaneously.  It seems
            # to work better than threading.Lock()
            return
        self._handling_match = True
        callback = partial(pattern_obj.callback, self, match.group())
        self._call_callback(callback)
        if self.debug:
            # Turn on the fancy regex debugger/pretty printer
            debug_callback = partial(
                debug_expect, self, match.group(), pattern_obj.pattern)
            self._call_callback(debug_callback)
        if not pattern_obj.sticky:
            self.unexpect(hash(pattern_obj)) # Remove it
        self._handling_match = False