private bool IsLastSymbolBeforeDotTerminal(List <Symbol> prev)
{
if (prev.Count == 0)
{
return(false);
}
Symbol symBeforeDot = prev[prev.Count - 1];
return(_grammar.DoesBelongToTerminals(symBeforeDot));
}
private void RunMarpa(String input, int fromPosition)
{
for (int i = fromPosition; i <= input.Length; i++)
{
EarleySet set = Sets[i];
List <EarleyItem> items = set.GetEarleyItemList();
for (int j = 0; j < items.Count; j++)
{
EarleyItem current = items[j];
if (current.IsCompleted())
{
Completer(current, i);
}
else
{
bool condition = Grammar.DoesBelongToTerminals(current.GetCurrentNextSymbol());
if (!condition)
{
Predictor(current, i);
}
else if (input.Length > i)
{
Scanner(current, i, input[i]);
}
}
}
if (i + 1 < Sets.Count && Sets[i + 1].GetEarleyItemList().Count == 0)
{
errorHandler.AddNewError(ErrorCode.UNRECOGNISED_SYMBOL, input[i], i);
return;
}
}
}