fsm.py 文件源码

def _translate_excp(func):
    """Decorator to translate automaton exceptions into mogan exceptions."""

    @six.wraps(func)
    def wrapper(*args, **kwargs):
        try:
            return func(*args, **kwargs)
        except (automaton_exceptions.InvalidState,
                automaton_exceptions.NotInitialized,
                automaton_exceptions.FrozenMachine,
                automaton_exceptions.NotFound) as e:
            raise excp.InvalidState(six.text_type(e))
        except automaton_exceptions.Duplicate as e:
            raise excp.DuplicateState(six.text_type(e))

    return wrapper