YuriyGuts.RegexBuilder.RegexNodeCharacterRange.ToRegexPattern C# (CSharp) Method

        public override string ToRegexPattern()
        {
            string rangePattern;
            if (UseCharacterCodes)
            {
                rangePattern = string.Format(CultureInfo.InvariantCulture, "\\u{0:X4}-\\u{1:X4}", (int)RangeStart, (int)RangeEnd);
            }
            else
            {
                rangePattern = RangeStart + "-" + RangeEnd;
            }

            string result = string.Format(CultureInfo.InvariantCulture, (IsNegative ? "[^{0}]" : "[{0}]"), rangePattern);
            if (HasQuantifier)
            {
                result += Quantifier.ToRegexPattern();
            }

            return result;
        }