// Licensed to the .NET Foundation under one or more agreements. // The .NET Foundation licenses this file to you under the MIT license. namespace System.Globalization { /// <remarks> /// Calendar support range: /// Calendar Minimum Maximum /// ========== ========== ========== /// Gregorian 1960/01/28 2050/01/22 /// JapaneseLunisolar 1960/01/01 2049/12/29 /// </remarks> public class JapaneseLunisolarCalendar : EastAsianLunisolarCalendar { public const int JapaneseEra = 1; private readonly GregorianCalendarHelper _helper; private const int MinLunisolarYear = 1960; private const int MaxLunisolarYear = 2049; private static readonly DateTime s_minDate = new DateTime(1960, 1, 28); private static readonly DateTime s_maxDate = new DateTime((new DateTime(2050, 1, 22, 23, 59, 59, 999)).Ticks + 9999); public override DateTime MinSupportedDateTime => s_minDate; public override DateTime MaxSupportedDateTime => s_maxDate; protected override int DaysInYearBeforeMinSupportedYear => // 1959 from ChineseLunisolarCalendar 354; // Data for years 1960-2049 matches output of Calendrical Calculations [1] and published calendar tables [2]. // [1] Reingold, Edward M, and Nachum Dershowitz. Calendrical Calculations: The Ultimate Edition. Cambridge [etc.: Cambridge University Press, 2018. Print. // [2] Nishizawa, Yu\u0304so\u0304. Rekijitsu Taikan: Meiji Kaireki 1873-Nen-2100-Nen Shinkyu\u0304reki, Kanshi Kyu\u0304sei Rokuyo\u0304 Taisho\u0304. To\u0304kyo\u0304: Shin Jinbutsu O\u0304raisha, 1994. Print. private static readonly int[,] s_yinfo = { /*Y LM Lmon Lday DaysPerMonth D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 #Days 1960 */ { 06, 01, 28, 0b1010110101010000 }, /* 30 29 30 29 30 30 29 30 29 30 29 30 29 384 1961 */ { 00, 02, 15, 0b1010101101010000 }, /* 30 29 30 29 30 29 30 30 29 30 29 30 355 1962 */ { 00, 02, 05, 0b0100101101100000 }, /* 29 30 29 29 30 29 30 30 29 30 30 29 354 1963 */ { 04, 01, 25, 0b1010010101110000 }, /* 30 29 30 29 29 30 29 30 29 30 30 30 29 384 1964 */ { 00, 02, 13, 0b1010010101110000 }, /* 30 29 30 29 29 30 29 30 29 30 30 30 355 1965 */ { 00, 02, 02, 0b0101001001110000 }, /* 29 30 29 30 29 29 30 29 29 30 30 30 354 1966 */ { 03, 01, 22, 0b0110100100110000 }, /* 29 30 30 29 30 29 29 30 29 29 30 30 29 383 1967 */ { 00, 02, 09, 0b1101100101010000 }, /* 30 30 29 30 30 29 29 30 29 30 29 30 355 1968 */ { 07, 01, 30, 0b0110101010101000 }, /* 29 30 30 29 30 29 30 29 30 29 30 29 30 384 1969 */ { 00, 02, 17, 0b0101011010100000 }, /* 29 30 29 30 29 30 30 29 30 29 30 29 354 1970 */ { 00, 02, 06, 0b1001101011010000 }, /* 30 29 29 30 30 29 30 29 30 30 29 30 355 1971 */ { 05, 01, 27, 0b0100101011101000 }, /* 29 30 29 29 30 29 30 29 30 30 30 29 30 384 1972 */ { 00, 02, 15, 0b0100101011100000 }, /* 29 30 29 29 30 29 30 29 30 30 30 29 354 1973 */ { 00, 02, 03, 0b1010010011100000 }, /* 30 29 30 29 29 30 29 29 30 30 30 29 354 1974 */ { 04, 01, 23, 0b1101001001101000 }, /* 30 30 29 30 29 29 30 29 29 30 30 29 30 384 1975 */ { 00, 02, 11, 0b1101001001010000 }, /* 30 30 29 30 29 29 30 29 29 30 29 30 354 1976 */ { 08, 01, 31, 0b1101010101001000 }, /* 30 30 29 30 29 30 29 30 29 30 29 29 30 384 1977 */ { 00, 02, 18, 0b1011010101000000 }, /* 30 29 30 30 29 30 29 30 29 30 29 29 354 1978 */ { 00, 02, 07, 0b1101011010100000 }, /* 30 30 29 30 29 30 30 29 30 29 30 29 355 1979 */ { 06, 01, 28, 0b1001011011010000 }, /* 30 29 29 30 29 30 30 29 30 30 29 30 29 384 1980 */ { 00, 02, 16, 0b1001010110110000 }, /* 30 29 29 30 29 30 29 30 30 29 30 30 355 1981 */ { 00, 02, 05, 0b0100100110110000 }, /* 29 30 29 29 30 29 29 30 30 29 30 30 354 1982 */ { 04, 01, 25, 0b1010010011011000 }, /* 30 29 30 29 29 30 29 29 30 30 29 30 30 384 1983 */ { 00, 02, 13, 0b1010010010110000 }, /* 30 29 30 29 29 30 29 29 30 29 30 30 354 1984 */ { 10, 02, 02, 0b1011001001011000 }, /* 30 29 30 30 29 29 30 29 29 30 29 30 30 384 1985 */ { 00, 02, 20, 0b0110101001010000 }, /* 29 30 30 29 30 29 30 29 29 30 29 30 354 1986 */ { 00, 02, 09, 0b0110110101000000 }, /* 29 30 30 29 30 30 29 30 29 30 29 29 354 1987 */ { 06, 01, 29, 0b1011010110101000 }, /* 30 29 30 30 29 30 29 30 30 29 30 29 30 385 1988 */ { 00, 02, 18, 0b0010101101100000 }, /* 29 29 30 29 30 29 30 30 29 30 30 29 354 1989 */ { 00, 02, 06, 0b1001010110110000 }, /* 30 29 29 30 29 30 29 30 30 29 30 30 355 1990 */ { 05, 01, 27, 0b0100100110111000 }, /* 29 30 29 29 30 29 29 30 30 29 30 30 30 384 1991 */ { 00, 02, 15, 0b0100100101110000 }, /* 29 30 29 29 30 29 29 30 29 30 30 30 354 1992 */ { 00, 02, 04, 0b0110010010110000 }, /* 29 30 30 29 29 30 29 29 30 29 30 30 354 1993 */ { 03, 01, 23, 0b0110101001010000 }, /* 29 30 30 29 30 29 30 29 29 30 29 30 29 383 1994 */ { 00, 02, 10, 0b1110101001010000 }, /* 30 30 30 29 30 29 30 29 29 30 29 30 355 1995 */ { 08, 01, 31, 0b0110110101001000 }, /* 29 30 30 29 30 30 29 30 29 30 29 29 30 384 1996 */ { 00, 02, 19, 0b0101101011010000 }, /* 29 30 29 30 30 29 30 29 30 30 29 30 355 1997 */ { 00, 02, 08, 0b0010101101100000 }, /* 29 29 30 29 30 29 30 30 29 30 30 29 354 1998 */ { 05, 01, 28, 0b1001001101110000 }, /* 30 29 29 30 29 29 30 30 29 30 30 30 29 384 1999 */ { 00, 02, 16, 0b1001001011100000 }, /* 30 29 29 30 29 29 30 29 30 30 30 29 354 2000 */ { 00, 02, 05, 0b1100100101100000 }, /* 30 30 29 29 30 29 29 30 29 30 30 29 354 2001 */ { 04, 01, 24, 0b1110010010101000 }, /* 30 30 30 29 29 30 29 29 30 29 30 29 30 384 2002 */ { 00, 02, 12, 0b1101010010100000 }, /* 30 30 29 30 29 30 29 29 30 29 30 29 354 2003 */ { 00, 02, 01, 0b1101101001010000 }, /* 30 30 29 30 30 29 30 29 29 30 29 30 355 2004 */ { 02, 01, 22, 0b0101101010101000 }, /* 29 30 29 30 30 29 30 29 30 29 30 29 30 384 2005 */ { 00, 02, 09, 0b0101011011000000 }, /* 29 30 29 30 29 30 30 29 30 30 29 29 354 2006 */ { 07, 01, 29, 0b1010101011011000 }, /* 30 29 30 29 30 29 30 29 30 30 29 30 30 385 2007 */ { 00, 02, 18, 0b0010010111010000 }, /* 29 29 30 29 29 30 29 30 30 30 29 30 354 2008 */ { 00, 02, 07, 0b1001001011010000 }, /* 30 29 29 30 29 29 30 29 30 30 29 30 354 2009 */ { 05, 01, 26, 0b1100100101011000 }, /* 30 30 29 29 30 29 29 30 29 30 29 30 30 384 2010 */ { 00, 02, 14, 0b1010100101010000 }, /* 30 29 30 29 30 29 29 30 29 30 29 30 354 2011 */ { 00, 02, 03, 0b1011010010100000 }, /* 30 29 30 30 29 30 29 29 30 29 30 29 354 2012 */ { 03, 01, 23, 0b1011101001010000 }, /* 30 29 30 30 30 29 30 29 29 30 29 30 29 384 2013 */ { 00, 02, 10, 0b1011010101010000 }, /* 30 29 30 30 29 30 29 30 29 30 29 30 355 2014 */ { 09, 01, 31, 0b0101010110101000 }, /* 29 30 29 30 29 30 29 30 30 29 30 29 30 384 2015 */ { 00, 02, 19, 0b0100101110100000 }, /* 29 30 29 29 30 29 30 30 30 29 30 29 354 2016 */ { 00, 02, 08, 0b1010010110110000 }, /* 30 29 30 29 29 30 29 30 30 29 30 30 355 2017 */ { 05, 01, 28, 0b0101001010111000 }, /* 29 30 29 30 29 29 30 29 30 29 30 30 30 384 2018 */ { 00, 02, 16, 0b0101001010110000 }, /* 29 30 29 30 29 29 30 29 30 29 30 30 354 2019 */ { 00, 02, 05, 0b1010100101010000 }, /* 30 29 30 29 30 29 29 30 29 30 29 30 354 2020 */ { 04, 01, 25, 0b1011010010101000 }, /* 30 29 30 30 29 30 29 29 30 29 30 29 30 384 2021 */ { 00, 02, 12, 0b0110101010100000 }, /* 29 30 30 29 30 29 30 29 30 29 30 29 354 2022 */ { 00, 02, 01, 0b1010110101010000 }, /* 30 29 30 29 30 30 29 30 29 30 29 30 355 2023 */ { 02, 01, 22, 0b0101010110101000 }, /* 29 30 29 30 29 30 29 30 30 29 30 29 30 384 2024 */ { 00, 02, 10, 0b0100101101100000 }, /* 29 30 29 29 30 29 30 30 29 30 30 29 354 2025 */ { 06, 01, 29, 0b1010010101110000 }, /* 30 29 30 29 29 30 29 30 29 30 30 30 29 384 2026 */ { 00, 02, 17, 0b1010010101110000 }, /* 30 29 30 29 29 30 29 30 29 30 30 30 355 2027 */ { 00, 02, 07, 0b0101001001110000 }, /* 29 30 29 30 29 29 30 29 29 30 30 30 354 2028 */ { 05, 01, 27, 0b0110100100110000 }, /* 29 30 30 29 30 29 29 30 29 29 30 30 29 383 2029 */ { 00, 02, 13, 0b1101100100110000 }, /* 30 30 29 30 30 29 29 30 29 29 30 30 355 2030 */ { 00, 02, 03, 0b0101101010100000 }, /* 29 30 29 30 30 29 30 29 30 29 30 29 354 2031 */ { 03, 01, 23, 0b1010101101010000 }, /* 30 29 30 29 30 29 30 30 29 30 29 30 29 384 2032 */ { 00, 02, 11, 0b1001011011010000 }, /* 30 29 29 30 29 30 30 29 30 30 29 30 355 2033 */ { 11, 01, 31, 0b0100101011101000 }, /* 29 30 29 29 30 29 30 29 30 30 30 29 30 384 2034 */ { 00, 02, 19, 0b0100101011100000 }, /* 29 30 29 29 30 29 30 29 30 30 30 29 354 2035 */ { 00, 02, 08, 0b1010010011010000 }, /* 30 29 30 29 29 30 29 29 30 30 29 30 354 2036 */ { 06, 01, 28, 0b1101001001101000 }, /* 30 30 29 30 29 29 30 29 29 30 30 29 30 384 2037 */ { 00, 02, 15, 0b1101001001010000 }, /* 30 30 29 30 29 29 30 29 29 30 29 30 354 2038 */ { 00, 02, 04, 0b1101010100100000 }, /* 30 30 29 30 29 30 29 30 29 29 30 29 354 2039 */ { 05, 01, 24, 0b1101101010100000 }, /* 30 30 29 30 30 29 30 29 30 29 30 29 29 384 2040 */ { 00, 02, 12, 0b1011011010100000 }, /* 30 29 30 30 29 30 30 29 30 29 30 29 355 2041 */ { 00, 02, 01, 0b1001011011010000 }, /* 30 29 29 30 29 30 30 29 30 30 29 30 355 2042 */ { 02, 01, 22, 0b0100101011011000 }, /* 29 30 29 29 30 29 30 29 30 30 29 30 30 384 2043 */ { 00, 02, 10, 0b0100100110110000 }, /* 29 30 29 29 30 29 29 30 30 29 30 30 354 2044 */ { 07, 01, 30, 0b1010010010111000 }, /* 30 29 30 29 29 30 29 29 30 29 30 30 30 384 2045 */ { 00, 02, 17, 0b1010010010110000 }, /* 30 29 30 29 29 30 29 29 30 29 30 30 354 2046 */ { 00, 02, 06, 0b1011001001010000 }, /* 30 29 30 30 29 29 30 29 29 30 29 30 354 2047 */ { 05, 01, 26, 0b1011010100101000 }, /* 30 29 30 30 29 30 29 30 29 29 30 29 30 384 2048 */ { 00, 02, 14, 0b0110110101000000 }, /* 29 30 30 29 30 30 29 30 29 30 29 29 354 2049 */ { 00, 02, 02, 0b1010110110100000 }, /* 30 29 30 29 30 30 29 30 30 29 30 29 355 */ }; internal override int MinCalendarYear => MinLunisolarYear; internal override int MaxCalendarYear => MaxLunisolarYear; internal override DateTime MinDate => s_minDate; internal override DateTime MaxDate => s_maxDate; internal override EraInfo[]? CalEraInfo => JapaneseCalendar.GetEraInfo(); internal override int GetYearInfo(int lunarYear, int index) { if (lunarYear < MinLunisolarYear || lunarYear > MaxLunisolarYear) { throw new ArgumentOutOfRangeException( "year", lunarYear, SR.Format(SR.ArgumentOutOfRange_Range, MinLunisolarYear, MaxLunisolarYear)); } return s_yinfo[lunarYear - MinLunisolarYear, index]; } internal override int GetYear(int year, DateTime time) { return _helper.GetYear(year, time); } internal override int GetGregorianYear(int year, int era) { return _helper.GetGregorianYear(year, era); } /// <summary> /// Trim off the eras that are before our date range /// </summary> private static EraInfo[] TrimEras(EraInfo[] baseEras) { EraInfo[] newEras = new EraInfo[baseEras.Length]; int newIndex = 0; // Eras have most recent first, so start with that for (int i = 0; i < baseEras.Length; i++) { // If this one's minimum year is bigger than our maximum year // then we can't use it. if (baseEras[i].yearOffset + baseEras[i].minEraYear >= MaxLunisolarYear) { // skip this one. continue; } // If this one's maximum era is less than our minimum era // then we've gotten too low in the era #s, so we're done if (baseEras[i].yearOffset + baseEras[i].maxEraYear < MinLunisolarYear) { break; } // Wasn't too large or too small, can use this one newEras[newIndex] = baseEras[i]; newIndex++; } // If we didn't copy any then something was wrong, just return base if (newIndex == 0) return baseEras; Array.Resize(ref newEras, newIndex); return newEras; } public JapaneseLunisolarCalendar() { _helper = new GregorianCalendarHelper(this, TrimEras(JapaneseCalendar.GetEraInfo())); } public override int GetEra(DateTime time) => _helper.GetEra(time); internal override CalendarId BaseCalendarID => CalendarId.JAPAN; internal override CalendarId ID => CalendarId.JAPANESELUNISOLAR; public override int[] Eras => _helper.Eras; } } |