public override Parser <TInput> VisitRule <TOutput>(RuleParser <TInput, TOutput> parser)
{
if (state.LastResult < 0)
{
// last parser failed, so fail the whole rule
state.InputLength = -state.InputLength + state.LastResult;
output.SetCount(state.OriginalOutputCount);
return(null);
}
else
{
state.InputLength += state.LastResult;
if (state.State >= parser.Parsers.Count)
{
var value = parser.ListProducer(output, state.OutputStart);
output.SetCount(state.OutputStart);
output.Add(value);
return(null);
}
else
{
var next = parser.Parsers[state.State];
state.State++;
state.NextOutputStart = output.Count;
return(next);
}
}
}
