Irony.Parsing.ParsingContext.AddParserMessage C# (CSharp) Метод

    public void AddParserMessage(ParserErrorLevel level, SourceLocation location, string message, params object[] args) {
      if (CurrentParseTree == null) return; 
      if (CurrentParseTree.ParserMessages.Count >= MaxErrors) return;
      if (args != null && args.Length > 0)
        message = string.Format(message, args);
      CurrentParseTree.ParserMessages.Add(new ParserMessage(level, location, message, CurrentParserState));
      if (OptionIsSet(ParseOptions.TraceParser)) 
        ParserTrace.Add( new ParserTraceEntry(CurrentParserState, ParserStack.Top, CurrentParserInput, message, true));
    }

 public override void Init(Irony.Parsing.ParsingContext context, Irony.Parsing.ParseTreeNode treeNode)
 {
     base.Init(context, treeNode);
     if (treeNode.Token.ValueString.Length > MaxLen)
     {
         context.AddParserMessage(ParserErrorLevel.Error, this.Span, "The maximum length is {0} character{1}.", MaxLen, MaxLen != 1 ? "s" : string.Empty);
     }
 }