System.Text.RegularExpressions.RegexParser.ScanBlank C# (CSharp) Method

        internal void ScanBlank()
        {
            if (UseOptionX())
            {
                for (; ;)
                {
                    while (CharsRight() > 0 && IsSpace(RightChar()))
                        MoveRight();

                    if (CharsRight() == 0)
                        break;

                    if (RightChar() == '#')
                    {
                        while (CharsRight() > 0 && RightChar() != '\n')
                            MoveRight();
                    }
                    else if (CharsRight() >= 3 && RightChar(2) == '#' &&
                             RightChar(1) == '?' && RightChar() == '(')
                    {
                        while (CharsRight() > 0 && RightChar() != ')')
                            MoveRight();
                        if (CharsRight() == 0)
                            throw MakeException(SR.UnterminatedComment);
                        MoveRight();
                    }
                    else
                        break;
                }
            }
            else
            {
                for (; ;)
                {
                    if (CharsRight() < 3 || RightChar(2) != '#' ||
                        RightChar(1) != '?' || RightChar() != '(')
                        return;

                    while (CharsRight() > 0 && RightChar() != ')')
                        MoveRight();
                    if (CharsRight() == 0)
                        throw MakeException(SR.UnterminatedComment);
                    MoveRight();
                }
            }
        }