protected override ATNState GetReachableTarget(ATNConfig source, Transition trans, int ttype)
{
if (ttype == AntlrV4.CaretToken.CaretTokenType)
{
ATNState target = null;
AtomTransition atomTransition = trans as AtomTransition;
if (atomTransition != null)
{
if (GetWordlikeTokenTypes().Contains(atomTransition.label))
{
target = atomTransition.target;
}
}
else
{
SetTransition setTransition = trans as SetTransition;
if (setTransition != null)
{
bool not = trans is NotSetTransition;
foreach (int t in GetWordlikeTokenTypes().ToArray())
{
if (!not && setTransition.set.Contains(t) || not && !setTransition.set.Contains(t))
{
target = setTransition.target;
break;
}
}
}
else
{
RangeTransition rangeTransition = trans as RangeTransition;
if (rangeTransition != null)
{
// TODO: there must be a better algorithm here
int[] wordlikeTokenTypes = GetWordlikeTokenTypes().ToArray();
int lowerBound = Array.BinarySearch(wordlikeTokenTypes, rangeTransition.from);
int upperBound = Array.BinarySearch(wordlikeTokenTypes, rangeTransition.to);
if (lowerBound >= 0 || upperBound >= 0 || lowerBound != upperBound)
{
target = rangeTransition.target;
}
}
else
{
WildcardTransition wildcardTransition = trans as WildcardTransition;
if (wildcardTransition != null)
{
target = trans.target;
}
}
}
}
if (_caretTransitions == null)
{
_caretTransitions = new Dictionary <ATNConfig, IList <Transition> >();
}
IList <Transition> configTransitions;
if (!_caretTransitions.TryGetValue(source, out configTransitions))
{
configTransitions = new List <Transition>();
_caretTransitions[source] = configTransitions;
}
configTransitions.Add(trans);
return(target);
}
return(base.GetReachableTarget(source, trans, ttype));
}
public ATNState GetReachableTargetHelper(ATNConfig source, Transition trans, int ttype)
{
return(GetReachableTarget(source, trans, ttype));
}