Antlr4.Runtime.Atn.ATNDeserializer.IdentifyTailCalls C# (CSharp) Method

        private static void IdentifyTailCalls(ATN atn)
        {
            foreach (ATNState state in atn.states)
            {
                foreach (Transition transition in state.transitions)
                {
                    if (!(transition is RuleTransition))
                    {
                        continue;
                    }
                    RuleTransition ruleTransition = (RuleTransition)transition;
                    ruleTransition.tailCall = TestTailCall(atn, ruleTransition, false);
                    ruleTransition.optimizedTailCall = TestTailCall(atn, ruleTransition, true);
                }
                if (!state.IsOptimized)
                {
                    continue;
                }
                foreach (Transition transition_1 in state.optimizedTransitions)
                {
                    if (!(transition_1 is RuleTransition))
                    {
                        continue;
                    }
                    RuleTransition ruleTransition = (RuleTransition)transition_1;
                    ruleTransition.tailCall = TestTailCall(atn, ruleTransition, false);
                    ruleTransition.optimizedTailCall = TestTailCall(atn, ruleTransition, true);
                }
            }
        }