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contrib/fsm-to-dot: allow transition from and to the same state 

In osmo-bsc's new gscon FSM, there is an osmo_fsm_inst_state_chg() from
ST_ACTIVE to ST_ACTIVE. Avoid an exception triggering on this simple fact.

Change-Id: I420c7be84e3af555cc5e8bddbff7261013348375
This commit is contained in:
Neels Hofmeyr 2018-03-25 01:02:35 +01:00 committed by Neels Hofmeyr
parent 167f808d76
commit 46145e80ec
1 changed files with 5 additions and 3 deletions
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8
contrib/fsm-to-dot.py
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@ -205,9 +205,11 @@ class State:
out_edge.add_events(edge.events)
out_edge.add_actions(edge.actions)
return
# sanity
if out_edge.to_state.get_label() == edge.to_state.get_label():
raise Exception('Two distinct states exist with identical labels.')
elif out_edge.to_state.get_label() == edge.to_state.get_label():
# sanity: there already is an edge to a state that a) is not identical to the target state of the
# newly added edge but b) has the same label.
raise Exception('Two distinct states exist with identical label: %r: states %r and %r.'
% (out_edge.to_state.get_label(), out_edge.to_state, edge.to_state))
state.out_edges.append(edge)
def get_label(state):