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Add step_next trigger to LinearFSM allowing stateless stepping

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This commit is contained in:
Kristóf Tóth 2018-05-04 17:45:16 +02:00
parent 06e17a6591
commit d1305bc879
1 changed files with 9 additions and 5 deletions
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14
lib/tfw/linear_fsm.py
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@ -5,14 +5,18 @@ from .fsm_base import FSMBase
class LinearFSM(FSMBase): class LinearFSM(FSMBase):
# pylint: disable=anomalous-backslash-in-string
""" """
This is a state machine for challenges with linear progression, consisting of This is a state machine for challenges with linear progression, consisting of
a number of steps specified in the constructor. It automatically sets up a single a number of steps specified in the constructor. It automatically sets up 2
action between states as such: actions (triggers) between states as such:
0 ==step_1==> 1 ==step_2==> 2 ==step_3==> 3 ... and so on (0) -- step_1 --> (1) -- step_2 --> (2) -- step_3 --> (3) ... and so on
\-step_next-/ \-step_next-/ \-step_next-/
""" """
def __init__(self, number_of_steps): def __init__(self, number_of_steps):
self.states = list(map(str, range(number_of_steps))) self.states = list(map(str, range(number_of_steps)))
self.transitions = [{'trigger': f'step_{int(index)+1}', 'source': index, 'dest': str(int(index)+1)} self.transitions = []
for index in self.states[:-1]] for index in self.states[:-1]:
self.transitions.append({'trigger': f'step_{int(index)+1}', 'source': index, 'dest': str(int(index)+1)})
self.transitions.append({'trigger': 'step_next', 'source': index, 'dest': str(int(index)+1)})
super(LinearFSM, self).__init__() super(LinearFSM, self).__init__()