def build(self, **actions):
"""Construct an FSM from a parsed fsm description file.
Keyword arguments:
**actions -- each action routine callable
"""
states = {}
for state in self.states.values():
s = FSM.STATE(
name=state.name,
on_enter=actions[state.enter] if state.enter else None,
on_exit=actions[state.exit] if state.exit else None,
)
states[s.name] = s
for event in state.events.values():
e = FSM.EVENT(
name=event.name,
actions=[actions[n] for n in event.actions],
next_state=event.next_state,
)
s.events[e.name] = e
for state in states.values():
for event in state.events.values():
if event.next_state:
event.next_state = states[event.next_state]
fsm = FSM.FSM(states.values())
fsm.state = self.first_state
fsm.context = self.context
fsm.exception = self.exception
return fsm
