Antlr4.StringTemplate.Misc.TemplateCompiletimeMessage.ToString C# (CSharp) Method

        public override string ToString()
        {
            int line = 0;
            int charPos = -1;
            if (_token != null)
            {
                line = _token.Line;
                charPos = _token.CharPositionInLine;
                // check the input streams - if different then token is embedded in templateToken and we need to adjust the offset
                if (_templateToken != null && !_templateToken.InputStream.Equals(Token.InputStream))
                {
                    int templateDelimiterSize = 1;
                    if (_templateToken.Type == GroupParser.BIGSTRING || _templateToken.Type == GroupParser.BIGSTRING_NO_NL)
                        templateDelimiterSize = 2;

                    line += _templateToken.Line - 1;
                    charPos += _templateToken.CharPositionInLine + templateDelimiterSize;
                }
            }

            string filepos = string.Format("{0}:{1}", line, charPos);
            if (_sourceName != null)
                return string.Format("{0} {1}: {2}", _sourceName, filepos, string.Format(Error.Message, Arg, Arg2));

            return string.Format("{0}: {1}", filepos, string.Format(Error.Message, Arg, Arg2));
        }