private RuleRelations ExtractRuleRelations(INamedTypeSymbol recognizerType)
{
string serializedATN = GetSerializedATN(recognizerType);
if (serializedATN == null)
return null;
ATN atn = new ATNDeserializer().Deserialize(serializedATN.ToCharArray());
RuleRelations relations = new RuleRelations(atn.ruleToStartState.Length);
foreach (ATNState state in atn.states)
{
if (!state.epsilonOnlyTransitions)
continue;
foreach (Transition transition in state.Transitions)
{
RuleTransition ruleTransition = transition as RuleTransition;
if (ruleTransition == null)
continue;
relations.AddRuleInvocation(state.ruleIndex, ruleTransition.target.ruleIndex);
}
}
return relations;
}
