39   def __init__(self, from_map, to_map, reason):  argument
41     self.to_map = to_map
63 def AddTransition(from_map, to_map, reason):  argument
65   to_map = AnnotateExistingMap(to_map)
69   if to_map in targets:
72     old_reason = targets[to_map].reason
77       targets[to_map].reason = reason
81             (from_map, to_map, targets[to_map].reason))
83   targets[to_map] = Transition(from_map, to_map, reason)
100       to_map = words[5]  variable
105       if to_map != last_to_map:
106         AddMap(to_map, "<transition> (%s)" % event)
107       last_to_map = to_map
118       AddTransition(from_map, to_map, reason)