public static Diagnostic CreateDiagnostic(SourceText sourceText, [CanBeNull] IToken offendingSymbol, int line, int charPositionInLine, string msg)
{
if (offendingSymbol != null)
{
var textExtent = TextExtent.FromBounds(start: offendingSymbol.StartIndex, end: offendingSymbol.StopIndex + 1);
var location = sourceText.GetLocation(textExtent);
return(CreateDiagnostic(msg, location));
}
return(CreateDiagnostic(sourceText: sourceText, line: line, charPositionInLine: charPositionInLine, msg: msg));
}