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