def evaluate(self, t: ParseTree):
# return all TerminalNode descendants of t that match tokenType (or do not match if inverted)
return filter(
lambda c: isinstance(c, TerminalNode) and
(self.invert ^ (c.symbol.type == self.tokenType)),
Trees.descendants(t))
def evaluate(self, t:ParseTree):
if self.invert:
return list() # !* is weird but valid (empty)
else:
return Trees.descendants(t)
def evaluate(self, t: ParseTree):
# return all ParserRuleContext descendants of t that match ruleIndex (or do not match if inverted)
return filter(
lambda c: isinstance(c, ParserRuleContext) and
(self.invert ^ (c.getRuleIndex() == self.ruleIndex)),
Trees.descendants(t))
