public GDuration()

in src/main/java/org/apache/xmlbeans/GDuration.java [67:193]
114 lines of code
39 McCabe index (conditional complexity)

    public GDuration(CharSequence str)
    {
        // Form:        -PnYnMnDTnHnMnS
        // (where each n may be unsigned integer, i.e., an integer that conforms to the pattern [0-9]+
        // {was: preceded by a - for us}, and the whole may be -)

        // first trim XML whitespace
        int len = str.length();
        int start = 0;
        while (len > 0 && GDate.isSpace(str.charAt(len - 1)))
            len -= 1;
        while (start < len && GDate.isSpace(str.charAt(start)))
            start += 1;

        _sign = 1;
        boolean tmark = false;

        if (start < len && str.charAt(start) == '-')
        {
            _sign = -1;
            start += 1;
        }

        if (start >= len || str.charAt(start) != 'P')
            throw new IllegalArgumentException("duration must begin with P");

        start += 1;

        int seen = SEEN_NOTHING;
        _fs = GDate._zero;

        for (;start < len; start += 1)
        {
            char ch = str.charAt(start);
            if (ch == 'T')
            {
                if (tmark)
                    throw new IllegalArgumentException("duration must have no more than one T'");
                if (seen > SEEN_DAY)
                    throw new IllegalArgumentException("T in duration must precede time fields");
                seen = SEEN_DAY;
                tmark = true;
                start += 1;
                if (start >= len)
                    throw new IllegalArgumentException("illegal duration");
                ch = str.charAt(start);
            }
            if (!GDate.isDigit(ch))
                throw new IllegalArgumentException("illegal duration at char[" + start + "]: '" + ch + "'");
            int value = GDate.digitVal(ch);
            for (;;)
            {
                start += 1;
                ch = (start < len) ? str.charAt(start) : '\0';
                if (!GDate.isDigit(ch))
                    break;
                value = value * 10 + GDate.digitVal(ch);
            }
            if (ch == '.')
            {
                int i = start;
                do i += 1;
                while (i < len && GDate.isDigit(ch = str.charAt(i)));
                _fs = new BigDecimal(str.subSequence(start, i).toString());
                if (i >= len || ch != 'S')
                    throw new IllegalArgumentException("illegal duration");
                start = i;
            }

            switch (seen)
            {
                case SEEN_NOTHING:
                    if (ch == 'Y')
                    {
                        seen = SEEN_YEAR;
                        _CY = value;
                        break;
                    } // fallthrough
                case SEEN_YEAR:
                    if (ch == 'M')
                    {
                        seen = SEEN_MONTH;
                        _M = value;
                        break;
                    } // fallthrough
                case SEEN_MONTH:
                    if (ch == 'D')
                    {
                        seen = SEEN_DAY;
                        _D = value;
                        break;
                    } // fallthrough
                case SEEN_DAY:
                    if (ch == 'H')
                    {
                        if (!tmark)
                            throw new IllegalArgumentException("time in duration must follow T");
                        seen = SEEN_HOUR;
                        _h = value;
                        break;
                    } // fallthrough
                case SEEN_HOUR:
                    if (ch == 'M')
                    {
                        if (!tmark)
                            throw new IllegalArgumentException("time in duration must follow T");
                        seen = SEEN_MINUTE;
                        _m = value;
                        break;
                    } // fallthrough
                case SEEN_MINUTE:
                    if (ch == 'S')
                    {
                        if (!tmark)
                            throw new IllegalArgumentException("time in duration must follow T");
                        seen = SEEN_SECOND;
                        _s = value;
                        break;
                    } // fallthrough
                default:
                    throw new IllegalArgumentException("duration must specify Y M D T H M S in order");
            }
        }

        if ( seen == SEEN_NOTHING )
            throw new IllegalArgumentException("duration must contain at least one number and its designator: " + str);
    }