private bool CheckForErrorToken(string plain_ole_command, calculatorParser parser, IParseTree tree, IParseTree[] all_nodes)
{
IEnumerable <IParseTree> eni_nodes_iterator = all_nodes.Where((IParseTree n) =>
{
ErrorNodeImpl nn = n as ErrorNodeImpl;
return(nn != null);
});
IParseTree[] all_eni_nodes_iterator = eni_nodes_iterator.ToArray();
if (!all_eni_nodes_iterator.Any())
{
return(false);
}
// For now, report nothing if there isn't an equal.
foreach (var en in all_eni_nodes_iterator)
{
ErrorNodeImpl eni = en as ErrorNodeImpl;
if (eni != null)
{
if (eni.GetText() == "<missing '='>")
{
return(false);
}
}
}
var enn = all_eni_nodes_iterator.First() as ErrorNodeImpl;
if (enn == null)
{
return(false);
}
int ErrorPos = enn.Payload.StartIndex;
if (ErrorPos < 0)
{
ErrorPos = 0;
}
string result = "Extraneous input.";
Results[Results.Count - 1].result.Text = BuildFormattedCommandAndResult(plain_ole_command, ErrorPos, result);
NotifyPropertyChanged("Results");
return(true);
}