def getDecisionLookahead(self, s:ATNState): if s is None: return None count = len(s.transitions) look = [] * count for alt in range(0, count): look[alt] = set() lookBusy = set() seeThruPreds = False # fail to get lookahead upon pred self._LOOK(s.transition(alt).target, None, PredictionContext.EMPTY, look[alt], lookBusy, set(), seeThruPreds, False) # Wipe out lookahead for this alternative if we found nothing # or we had a predicate when we !seeThruPreds if len(look[alt])==0 or self.HIT_PRED in look[alt]: look[alt] = None return look
def getDecisionLookahead(self, s: ATNState): if s is None: return None count = len(s.transitions) look = [] * count for alt in range(0, count): look[alt] = set() lookBusy = set() seeThruPreds = False # fail to get lookahead upon pred self._LOOK(s.transition(alt).target, None, PredictionContext.EMPTY, \ look[alt], lookBusy, set(), seeThruPreds, False) # Wipe out lookahead for this alternative if we found nothing # or we had a predicate when we !seeThruPreds if len(look[alt]) == 0 or self.HIT_PRED in look[alt]: look[alt] = None return look