ChineseLunisolarCalendar.cs

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namespace System.Globalization;
 
public class ChineseLunisolarCalendar : EastAsianLunisolarCalendar
{
    public const int ChineseEra = 1;
 
    private static readonly DateTime s_minDate = new DateTime(1901, 2, 19);
 
    private static readonly DateTime s_maxDate = new DateTime(new DateTime(2101, 1, 28, 23, 59, 59, 999).Ticks + 9999);
 
    private static readonly int[,] s_yinfo = new int[200, 4]
    {
        { 0, 2, 19, 19168 },
        { 0, 2, 8, 42352 },
        { 5, 1, 29, 21096 },
        { 0, 2, 16, 53856 },
        { 0, 2, 4, 55632 },
        { 4, 1, 25, 27304 },
        { 0, 2, 13, 22176 },
        { 0, 2, 2, 39632 },
        { 2, 1, 22, 19176 },
        { 0, 2, 10, 19168 },
        { 6, 1, 30, 42200 },
        { 0, 2, 18, 42192 },
        { 0, 2, 6, 53840 },
        { 5, 1, 26, 54568 },
        { 0, 2, 14, 46400 },
        { 0, 2, 3, 54944 },
        { 2, 1, 23, 38608 },
        { 0, 2, 11, 38320 },
        { 7, 2, 1, 18872 },
        { 0, 2, 20, 18800 },
        { 0, 2, 8, 42160 },
        { 5, 1, 28, 45656 },
        { 0, 2, 16, 27216 },
        { 0, 2, 5, 27968 },
        { 4, 1, 24, 44456 },
        { 0, 2, 13, 11104 },
        { 0, 2, 2, 38256 },
        { 2, 1, 23, 18808 },
        { 0, 2, 10, 18800 },
        { 6, 1, 30, 25776 },
        { 0, 2, 17, 54432 },
        { 0, 2, 6, 59984 },
        { 5, 1, 26, 27976 },
        { 0, 2, 14, 23248 },
        { 0, 2, 4, 11104 },
        { 3, 1, 24, 37744 },
        { 0, 2, 11, 37600 },
        { 7, 1, 31, 51560 },
        { 0, 2, 19, 51536 },
        { 0, 2, 8, 54432 },
        { 6, 1, 27, 55888 },
        { 0, 2, 15, 46416 },
        { 0, 2, 5, 22176 },
        { 4, 1, 25, 43736 },
        { 0, 2, 13, 9680 },
        { 0, 2, 2, 37584 },
        { 2, 1, 22, 51544 },
        { 0, 2, 10, 43344 },
        { 7, 1, 29, 46248 },
        { 0, 2, 17, 27808 },
        { 0, 2, 6, 46416 },
        { 5, 1, 27, 21928 },
        { 0, 2, 14, 19872 },
        { 0, 2, 3, 42416 },
        { 3, 1, 24, 21176 },
        { 0, 2, 12, 21168 },
        { 8, 1, 31, 43344 },
        { 0, 2, 18, 59728 },
        { 0, 2, 8, 27296 },
        { 6, 1, 28, 44368 },
        { 0, 2, 15, 43856 },
        { 0, 2, 5, 19296 },
        { 4, 1, 25, 42352 },
        { 0, 2, 13, 42352 },
        { 0, 2, 2, 21088 },
        { 3, 1, 21, 59696 },
        { 0, 2, 9, 55632 },
        { 7, 1, 30, 23208 },
        { 0, 2, 17, 22176 },
        { 0, 2, 6, 38608 },
        { 5, 1, 27, 19176 },
        { 0, 2, 15, 19152 },
        { 0, 2, 3, 42192 },
        { 4, 1, 23, 53864 },
        { 0, 2, 11, 53840 },
        { 8, 1, 31, 54568 },
        { 0, 2, 18, 46400 },
        { 0, 2, 7, 46752 },
        { 6, 1, 28, 38608 },
        { 0, 2, 16, 38320 },
        { 0, 2, 5, 18864 },
        { 4, 1, 25, 42168 },
        { 0, 2, 13, 42160 },
        { 10, 2, 2, 45656 },
        { 0, 2, 20, 27216 },
        { 0, 2, 9, 27968 },
        { 6, 1, 29, 44448 },
        { 0, 2, 17, 43872 },
        { 0, 2, 6, 38256 },
        { 5, 1, 27, 18808 },
        { 0, 2, 15, 18800 },
        { 0, 2, 4, 25776 },
        { 3, 1, 23, 27216 },
        { 0, 2, 10, 59984 },
        { 8, 1, 31, 27432 },
        { 0, 2, 19, 23232 },
        { 0, 2, 7, 43872 },
        { 5, 1, 28, 37736 },
        { 0, 2, 16, 37600 },
        { 0, 2, 5, 51552 },
        { 4, 1, 24, 54440 },
        { 0, 2, 12, 54432 },
        { 0, 2, 1, 55888 },
        { 2, 1, 22, 23208 },
        { 0, 2, 9, 22176 },
        { 7, 1, 29, 43736 },
        { 0, 2, 18, 9680 },
        { 0, 2, 7, 37584 },
        { 5, 1, 26, 51544 },
        { 0, 2, 14, 43344 },
        { 0, 2, 3, 46240 },
        { 4, 1, 23, 46416 },
        { 0, 2, 10, 44368 },
        { 9, 1, 31, 21928 },
        { 0, 2, 19, 19360 },
        { 0, 2, 8, 42416 },
        { 6, 1, 28, 21176 },
        { 0, 2, 16, 21168 },
        { 0, 2, 5, 43312 },
        { 4, 1, 25, 29864 },
        { 0, 2, 12, 27296 },
        { 0, 2, 1, 44368 },
        { 2, 1, 22, 19880 },
        { 0, 2, 10, 19296 },
        { 6, 1, 29, 42352 },
        { 0, 2, 17, 42208 },
        { 0, 2, 6, 53856 },
        { 5, 1, 26, 59696 },
        { 0, 2, 13, 54576 },
        { 0, 2, 3, 23200 },
        { 3, 1, 23, 27472 },
        { 0, 2, 11, 38608 },
        { 11, 1, 31, 19176 },
        { 0, 2, 19, 19152 },
        { 0, 2, 8, 42192 },
        { 6, 1, 28, 53848 },
        { 0, 2, 15, 53840 },
        { 0, 2, 4, 54560 },
        { 5, 1, 24, 55968 },
        { 0, 2, 12, 46496 },
        { 0, 2, 1, 22224 },
        { 2, 1, 22, 19160 },
        { 0, 2, 10, 18864 },
        { 7, 1, 30, 42168 },
        { 0, 2, 17, 42160 },
        { 0, 2, 6, 43600 },
        { 5, 1, 26, 46376 },
        { 0, 2, 14, 27936 },
        { 0, 2, 2, 44448 },
        { 3, 1, 23, 21936 },
        { 0, 2, 11, 37744 },
        { 8, 2, 1, 18808 },
        { 0, 2, 19, 18800 },
        { 0, 2, 8, 25776 },
        { 6, 1, 28, 27216 },
        { 0, 2, 15, 59984 },
        { 0, 2, 4, 27296 },
        { 4, 1, 24, 43872 },
        { 0, 2, 12, 43744 },
        { 0, 2, 2, 37600 },
        { 3, 1, 21, 51568 },
        { 0, 2, 9, 51552 },
        { 7, 1, 29, 54440 },
        { 0, 2, 17, 54432 },
        { 0, 2, 5, 55888 },
        { 5, 1, 26, 23208 },
        { 0, 2, 14, 22176 },
        { 0, 2, 3, 42704 },
        { 4, 1, 23, 21224 },
        { 0, 2, 11, 21200 },
        { 8, 1, 31, 43352 },
        { 0, 2, 19, 43344 },
        { 0, 2, 7, 46240 },
        { 6, 1, 27, 46416 },
        { 0, 2, 15, 44368 },
        { 0, 2, 5, 21920 },
        { 4, 1, 24, 42448 },
        { 0, 2, 12, 42416 },
        { 0, 2, 2, 21168 },
        { 3, 1, 22, 43320 },
        { 0, 2, 9, 26928 },
        { 7, 1, 29, 29336 },
        { 0, 2, 17, 27296 },
        { 0, 2, 6, 44368 },
        { 5, 1, 26, 19880 },
        { 0, 2, 14, 19296 },
        { 0, 2, 3, 42352 },
        { 4, 1, 24, 21104 },
        { 0, 2, 10, 53600 },
        { 8, 1, 30, 59696 },
        { 0, 2, 18, 54560 },
        { 0, 2, 7, 55968 },
        { 6, 1, 27, 27472 },
        { 0, 2, 15, 22224 },
        { 0, 2, 5, 19168 },
        { 4, 1, 25, 42216 },
        { 0, 2, 12, 41680 },
        { 0, 2, 1, 53584 },
        { 2, 1, 21, 55592 },
        { 0, 2, 9, 54560 }
    };
 
    public override DateTime MinSupportedDateTime => s_minDate;
 
    public override DateTime MaxSupportedDateTime => s_maxDate;
 
    protected override int DaysInYearBeforeMinSupportedYear => 384;
 
    internal override int MinCalendarYear => 1901;
 
    internal override int MaxCalendarYear => 2100;
 
    internal override DateTime MinDate => s_minDate;
 
    internal override DateTime MaxDate => s_maxDate;
 
    internal override EraInfo[]? CalEraInfo => null;
 
    internal override CalendarId ID => CalendarId.CHINESELUNISOLAR;
 
    internal override CalendarId BaseCalendarID => CalendarId.GREGORIAN;
 
    public override int[] Eras => new int[1] { 1 };
 
    internal override int GetYearInfo(int lunarYear, int index)
    {
        if (lunarYear < 1901 || lunarYear > 2100)
        {
            throw new ArgumentOutOfRangeException("year", lunarYear, SR.Format(SR.ArgumentOutOfRange_Range, 1901, 2100));
        }
        return s_yinfo[lunarYear - 1901, index];
    }
 
    internal override int GetYear(int year, DateTime time)
    {
        return year;
    }
 
    internal override int GetGregorianYear(int year, int era)
    {
        if (era != 0 && era != 1)
        {
            throw new ArgumentOutOfRangeException("era", era, SR.ArgumentOutOfRange_InvalidEraValue);
        }
        if (year < 1901 || year > 2100)
        {
            throw new ArgumentOutOfRangeException("year", year, SR.Format(SR.ArgumentOutOfRange_Range, 1901, 2100));
        }
        return year;
    }
 
    public override int GetEra(DateTime time)
    {
        CheckTicksRange(time.Ticks);
        return 1;
    }
}