public override void DisplayRecognitionError(string[] tokenNames, RecognitionException e)
{
string header = GetErrorHeader(e);
string message = GetErrorMessage(e, tokenNames);
Span span = new Span();
if (e.Token != null)
span = Span.FromBounds(e.Token.StartIndex, e.Token.StopIndex + 1);
ParseErrorEventArgs args = new ParseErrorEventArgs(message, span);
OnParseError(args);
base.DisplayRecognitionError(tokenNames, e);
}
public void Error(Message msg)
{
GrammarSyntaxMessage syntaxMessage = msg as GrammarSyntaxMessage;
if (syntaxMessage != null)
{
IToken token = syntaxMessage.offendingToken;
if (token == null)
return;
AntlrParserTokenStream stream = syntaxMessage.exception.Input as AntlrParserTokenStream;
if (stream == null)
return;
var parser = stream.Parser;
if (parser == null)
return;
Span span = Span.FromBounds(token.StartIndex, token.StopIndex + 1);
ParseErrorEventArgs e = new ParseErrorEventArgs(syntaxMessage.ToString(), span);
parser.OnParseError(e);
return;
}
}
//public override void EmitErrorMessage(string msg)
//{
// OnParseError(new ParseErrorEventArgs(msg));
// base.EmitErrorMessage(msg);
//}
protected virtual void OnParseError(ParseErrorEventArgs e)
{
var t = ParseError;
if (t != null)
t(this, e);
}