def _revert_single_affirmation_events() -> List[Event]:
return [
UserUtteranceReverted(), # revert affirmation and request
# revert original intent (has to be re-added later)
UserUtteranceReverted(),
# add action listen intent
ActionExecuted(action_name=ACTION_LISTEN_NAME),
]
def _revert_rephrasing_events() -> List[Event]:
return [
UserUtteranceReverted(), # remove rephrasing
# remove feedback and rephrase request
UserUtteranceReverted(),
# remove affirmation request and false intent
UserUtteranceReverted(),
# replace action with action listen
ActionExecuted(action_name=ACTION_LISTEN_NAME),
]
def _log_action_on_tracker(self, tracker, action_name, events, policy,
confidence):
# Ensures that the code still works even if a lazy programmer missed
# to type `return []` at the end of an action or the run method
# returns `None` for some other reason.
if events is None:
events = []
logger.debug("Action '{}' ended with events '{}'".format(
action_name, ["{}".format(e) for e in events]))
self._warn_about_new_slots(tracker, action_name, events)
if action_name is not None:
# log the action and its produced events
tracker.update(ActionExecuted(action_name, policy, confidence))
for e in events:
# this makes sure the events are ordered by timestamp -
# since the event objects are created somewhere else,
# the timestamp would indicate a time before the time
# of the action executed
e.timestamp = time.time()
tracker.update(e)
def _add_action_listen(self, events):
if not events or not self._is_action_listen(events[-1]):
# do not add second action_listen
events.append(ActionExecuted(ACTION_LISTEN_NAME))
def as_story_string(self, flat=False, e2e=False):
# if the result should be flattened, we
# will exclude the caption and any checkpoints.
for s in self.start_checkpoints:
if s.name == STORY_START:
# first story step in the story, so reset helper
self.story_string_helper = StoryStringHelper()
if flat:
result = ""
else:
result = "\n## {}\n".format(self.block_name)
for s in self.start_checkpoints:
if s.name != STORY_START:
result += self._checkpoint_string(s)
for s in self.events:
if isinstance(s, UserUttered):
if self.story_string_helper.active_form is None:
result += self._user_string(s, e2e)
else:
# form is active
# it is not known whether the form will be
# successfully executed, so store this
# story string for later
self._store_user_strings(s, e2e, FORM_PREFIX)
elif isinstance(s, Form):
# form got either activated or deactivated
self.story_string_helper.active_form = s.name
if self.story_string_helper.active_form is None:
# form deactivated, so form succeeded,
# so add story string with form prefix
result += self.story_string_helper.form_prefix_string
# remove all stored story strings
self._reset_stored_strings()
result += self._bot_string(s)
elif isinstance(s, FormValidation):
self.story_string_helper.form_validation = s.validate
elif isinstance(s, ActionExecutionRejected):
if s.action_name == self.story_string_helper.active_form:
# form rejected
self.story_string_helper.form_rejected = True
elif isinstance(s, ActionExecuted):
if self._is_action_listen(s):
pass
elif self.story_string_helper.active_form is None:
result += self._bot_string(s)
else:
# form is active
if self.story_string_helper.form_rejected:
if (self.story_string_helper.form_validation
and s.action_name
== self.story_string_helper.active_form):
result += self._bot_string(
ActionExecuted(ACTION_LISTEN_NAME))
result += self.story_string_helper.form_prefix_string
else:
result += self.story_string_helper.no_form_prefix_string
# form rejected, add story string without form prefix
result += self._bot_string(s)
else:
# form succeeded, so add story string with form prefix
result += self.story_string_helper.form_prefix_string
result += self._bot_string(s, FORM_PREFIX)
# remove all stored story strings
self._reset_stored_strings()
if s.action_name == self.story_string_helper.active_form:
# form was successfully executed
self.story_string_helper.form_rejected = False
self.story_string_helper.form_validation = True
elif isinstance(s, SlotSet):
if self.story_string_helper.active_form is None:
result += self._bot_string(s)
else:
# form is active
# it is not known whether the form will be
# successfully executed, so store this
# story string for later
# slots should be always printed without prefix
self._store_bot_strings(s)
elif isinstance(s, Event):
converted = s.as_story_string()
if converted:
if self.story_string_helper.active_form is None:
result += self._bot_string(s)
else:
# form is active
# it is not known whether the form will be
# successfully executed, so store this
# story string for later
self._store_bot_strings(s, FORM_PREFIX)
else:
raise Exception(
"Unexpected element in story step: {}".format(s))
if (not self.end_checkpoints
and self.story_string_helper.active_form is not None):
# there are no end checkpoints
# form is active
# add story string with form prefix
result += self.story_string_helper.form_prefix_string
# remove all stored story strings
self._reset_stored_strings()
if not flat:
for e in self.end_checkpoints:
result += "> {}\n".format(e.as_story_string())
return result