def _option(self):
self.last_node = None
self._cut_stack.append(False)
try:
with self._try():
yield
raise OptionSucceeded()
except FailedCut:
raise
except FailedParse as e:
if self._is_cut_set():
raise FailedCut(e)
finally:
self._cut_stack.pop()
def _option(self):
self.last_node = None
self._push_cut()
try:
with self._try():
yield
raise OptionSucceeded()
except FailedCut:
raise
except FailedParse as e:
if self._is_cut_set():
raise FailedCut(e)
finally:
self._pop_cut()