public override void Recover(LexerNoViableAltException e)
{
//Lexer recover strategy - ignore all till next space, tab or EOL
var next = _input.La(1);
while (next != -1 && next != ' ' && next != '\n' && next != '\r' && next != '\t' && next != ',' && next != ')')
{
Interpreter.Consume(_input);
next = _input.La(1);
}
}
private static string GetMessage(RecognitionException re)
{
return(re switch
{
FailedPredicateException fpe => fpe.Message,
InputMismatchException ime => ime.Message,
LexerNoViableAltException nve1 =>
$"No Viable Alternative - '{nve1.OffendingToken.Text}' not recognized.",
NoViableAltException nve2 =>
$"No Viable Alternative - '{nve2.OffendingToken.Text}' was unexpected.",
_ => throw new ArgumentOutOfRangeException(nameof(re))
});
public override void NotifyListeners(LexerNoViableAltException e)
{
Console.WriteLine("测试位置");
//string text = _input.GetText(Interval.Of(_tokenStartCharIndex, _input.Index));
ICharStream _input = (ICharStream)InputStream;
string text = _input.GetText(Interval.Of(TokenStartCharIndex, _input.Index));
Console.WriteLine(text);
string msg = "无法识别的字符: '" + GetErrorDisplay(text) + "'";
IAntlrErrorListener <int> listener = ErrorListenerDispatch;
listener.SyntaxError(ErrorOutput, this, 0, Line, Column, msg, e);
}
public override void Recover(LexerNoViableAltException e)
{
throw e;
}
public override void Recover(LexerNoViableAltException e)
{
Console.WriteLine("调用我了!");
base.Recover(e);
}
public override void Recover(LexerNoViableAltException e)
{
throw new ParseCanceledException(e);
}
public override void Recover(LexerNoViableAltException e)
{
NotifyListeners(e);
base.Recover(e);
}