// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Diagnostics;
namespace System.Globalization
{
///
/// Calendar support range:
/// Calendar Minimum Maximum
/// ========== ========== ==========
/// Gregorian 1900/04/30 2077/05/13
/// UmAlQura 1318/01/01 1500/12/30
///
public partial class UmAlQuraCalendar : Calendar
{
private const int MinCalendarYear = 1318;
private const int MaxCalendarYear = 1500;
private struct DateMapping
{
internal DateMapping(int MonthsLengthFlags, int GYear, int GMonth, int GDay)
{
HijriMonthsLengthFlags = MonthsLengthFlags;
GregorianDate = new DateTime(GYear, GMonth, GDay);
}
internal int HijriMonthsLengthFlags;
internal DateTime GregorianDate;
}
private static readonly DateMapping[] s_hijriYearInfo = InitDateMapping();
private static DateMapping[] InitDateMapping()
{
short[] rawData = new short[]
{
// These data are taken from Tables/Excel/UmAlQura.xls please make sure that the two places are in sync
/* DaysPerM GY GM GD D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12
1318*/0x02EA, 1900, 4, 30, /* 0 1 0 1 0 1 1 1 0 1 0 0 4/30/1900
1319*/0x06E9, 1901, 4, 19, /* 1 0 0 1 0 1 1 1 0 1 1 0 4/19/1901
1320*/0x0ED2, 1902, 4, 9, /* 0 1 0 0 1 0 1 1 0 1 1 1 4/9/1902
1321*/0x0EA4, 1903, 3, 30, /* 0 0 1 0 0 1 0 1 0 1 1 1 3/30/1903
1322*/0x0D4A, 1904, 3, 18, /* 0 1 0 1 0 0 1 0 1 0 1 1 3/18/1904
1323*/0x0A96, 1905, 3, 7, /* 0 1 1 0 1 0 0 1 0 1 0 1 3/7/1905
1324*/0x0536, 1906, 2, 24, /* 0 1 1 0 1 1 0 0 1 0 1 0 2/24/1906
1325*/0x0AB5, 1907, 2, 13, /* 1 0 1 0 1 1 0 1 0 1 0 1 2/13/1907
1326*/0x0DAA, 1908, 2, 3, /* 0 1 0 1 0 1 0 1 1 0 1 1 2/3/1908
1327*/0x0BA4, 1909, 1, 23, /* 0 0 1 0 0 1 0 1 1 1 0 1 1/23/1909
1328*/0x0B49, 1910, 1, 12, /* 1 0 0 1 0 0 1 0 1 1 0 1 1/12/1910
1329*/0x0A93, 1911, 1, 1, /* 1 1 0 0 1 0 0 1 0 1 0 1 1/1/1911
1330*/0x052B, 1911, 12, 21, /* 1 1 0 1 0 1 0 0 1 0 1 0 12/21/1911
1331*/0x0A57, 1912, 12, 9, /* 1 1 1 0 1 0 1 0 0 1 0 1 12/9/1912
1332*/0x04B6, 1913, 11, 29, /* 0 1 1 0 1 1 0 1 0 0 1 0 11/29/1913
1333*/0x0AB5, 1914, 11, 18, /* 1 0 1 0 1 1 0 1 0 1 0 1 11/18/1914
1334*/0x05AA, 1915, 11, 8, /* 0 1 0 1 0 1 0 1 1 0 1 0 11/8/1915
1335*/0x0D55, 1916, 10, 27, /* 1 0 1 0 1 0 1 0 1 0 1 1 10/27/1916
1336*/0x0D2A, 1917, 10, 17, /* 0 1 0 1 0 1 0 0 1 0 1 1 10/17/1917
1337*/0x0A56, 1918, 10, 6, /* 0 1 1 0 1 0 1 0 0 1 0 1 10/6/1918
1338*/0x04AE, 1919, 9, 25, /* 0 1 1 1 0 1 0 1 0 0 1 0 9/25/1919
1339*/0x095D, 1920, 9, 13, /* 1 0 1 1 1 0 1 0 1 0 0 1 9/13/1920
1340*/0x02EC, 1921, 9, 3, /* 0 0 1 1 0 1 1 1 0 1 0 0 9/3/1921
1341*/0x06D5, 1922, 8, 23, /* 1 0 1 0 1 0 1 1 0 1 1 0 8/23/1922
1342*/0x06AA, 1923, 8, 13, /* 0 1 0 1 0 1 0 1 0 1 1 0 8/13/1923
1343*/0x0555, 1924, 8, 1, /* 1 0 1 0 1 0 1 0 1 0 1 0 8/1/1924
1344*/0x04AB, 1925, 7, 21, /* 1 1 0 1 0 1 0 1 0 0 1 0 7/21/1925
1345*/0x095B, 1926, 7, 10, /* 1 1 0 1 1 0 1 0 1 0 0 1 7/10/1926
1346*/0x02BA, 1927, 6, 30, /* 0 1 0 1 1 1 0 1 0 1 0 0 6/30/1927
1347*/0x0575, 1928, 6, 18, /* 1 0 1 0 1 1 1 0 1 0 1 0 6/18/1928
1348*/0x0BB2, 1929, 6, 8, /* 0 1 0 0 1 1 0 1 1 1 0 1 6/8/1929
1349*/0x0764, 1930, 5, 29, /* 0 0 1 0 0 1 1 0 1 1 1 0 5/29/1930
1350*/0x0749, 1931, 5, 18, /* 1 0 0 1 0 0 1 0 1 1 1 0 5/18/1931
1351*/0x0655, 1932, 5, 6, /* 1 0 1 0 1 0 1 0 0 1 1 0 5/6/1932
1352*/0x02AB, 1933, 4, 25, /* 1 1 0 1 0 1 0 1 0 1 0 0 4/25/1933
1353*/0x055B, 1934, 4, 14, /* 1 1 0 1 1 0 1 0 1 0 1 0 4/14/1934
1354*/0x0ADA, 1935, 4, 4, /* 0 1 0 1 1 0 1 1 0 1 0 1 4/4/1935
1355*/0x06D4, 1936, 3, 24, /* 0 0 1 0 1 0 1 1 0 1 1 0 3/24/1936
1356*/0x0EC9, 1937, 3, 13, /* 1 0 0 1 0 0 1 1 0 1 1 1 3/13/1937
1357*/0x0D92, 1938, 3, 3, /* 0 1 0 0 1 0 0 1 1 0 1 1 3/3/1938
1358*/0x0D25, 1939, 2, 20, /* 1 0 1 0 0 1 0 0 1 0 1 1 2/20/1939
1359*/0x0A4D, 1940, 2, 9, /* 1 0 1 1 0 0 1 0 0 1 0 1 2/9/1940
1360*/0x02AD, 1941, 1, 28, /* 1 0 1 1 0 1 0 1 0 1 0 0 1/28/1941
1361*/0x056D, 1942, 1, 17, /* 1 0 1 1 0 1 1 0 1 0 1 0 1/17/1942
1362*/0x0B6A, 1943, 1, 7, /* 0 1 0 1 0 1 1 0 1 1 0 1 1/7/1943
1363*/0x0B52, 1943, 12, 28, /* 0 1 0 0 1 0 1 0 1 1 0 1 12/28/1943
1364*/0x0AA5, 1944, 12, 16, /* 1 0 1 0 0 1 0 1 0 1 0 1 12/16/1944
1365*/0x0A4B, 1945, 12, 5, /* 1 1 0 1 0 0 1 0 0 1 0 1 12/5/1945
1366*/0x0497, 1946, 11, 24, /* 1 1 1 0 1 0 0 1 0 0 1 0 11/24/1946
1367*/0x0937, 1947, 11, 13, /* 1 1 1 0 1 1 0 0 1 0 0 1 11/13/1947
1368*/0x02B6, 1948, 11, 2, /* 0 1 1 0 1 1 0 1 0 1 0 0 11/2/1948
1369*/0x0575, 1949, 10, 22, /* 1 0 1 0 1 1 1 0 1 0 1 0 10/22/1949
1370*/0x0D6A, 1950, 10, 12, /* 0 1 0 1 0 1 1 0 1 0 1 1 10/12/1950
1371*/0x0D52, 1951, 10, 2, /* 0 1 0 0 1 0 1 0 1 0 1 1 10/2/1951
1372*/0x0A96, 1952, 9, 20, /* 0 1 1 0 1 0 0 1 0 1 0 1 9/20/1952
1373*/0x092D, 1953, 9, 9, /* 1 0 1 1 0 1 0 0 1 0 0 1 9/9/1953
1374*/0x025D, 1954, 8, 29, /* 1 0 1 1 1 0 1 0 0 1 0 0 8/29/1954
1375*/0x04DD, 1955, 8, 18, /* 1 0 1 1 1 0 1 1 0 0 1 0 8/18/1955
1376*/0x0ADA, 1956, 8, 7, /* 0 1 0 1 1 0 1 1 0 1 0 1 8/7/1956
1377*/0x05D4, 1957, 7, 28, /* 0 0 1 0 1 0 1 1 1 0 1 0 7/28/1957
1378*/0x0DA9, 1958, 7, 17, /* 1 0 0 1 0 1 0 1 1 0 1 1 7/17/1958
1379*/0x0D52, 1959, 7, 7, /* 0 1 0 0 1 0 1 0 1 0 1 1 7/7/1959
1380*/0x0AAA, 1960, 6, 25, /* 0 1 0 1 0 1 0 1 0 1 0 1 6/25/1960
1381*/0x04D6, 1961, 6, 14, /* 0 1 1 0 1 0 1 1 0 0 1 0 6/14/1961
1382*/0x09B6, 1962, 6, 3, /* 0 1 1 0 1 1 0 1 1 0 0 1 6/3/1962
1383*/0x0374, 1963, 5, 24, /* 0 0 1 0 1 1 1 0 1 1 0 0 5/24/1963
1384*/0x0769, 1964, 5, 12, /* 1 0 0 1 0 1 1 0 1 1 1 0 5/12/1964
1385*/0x0752, 1965, 5, 2, /* 0 1 0 0 1 0 1 0 1 1 1 0 5/2/1965
1386*/0x06A5, 1966, 4, 21, /* 1 0 1 0 0 1 0 1 0 1 1 0 4/21/1966
1387*/0x054B, 1967, 4, 10, /* 1 1 0 1 0 0 1 0 1 0 1 0 4/10/1967
1388*/0x0AAB, 1968, 3, 29, /* 1 1 0 1 0 1 0 1 0 1 0 1 3/29/1968
1389*/0x055A, 1969, 3, 19, /* 0 1 0 1 1 0 1 0 1 0 1 0 3/19/1969
1390*/0x0AD5, 1970, 3, 8, /* 1 0 1 0 1 0 1 1 0 1 0 1 3/8/1970
1391*/0x0DD2, 1971, 2, 26, /* 0 1 0 0 1 0 1 1 1 0 1 1 2/26/1971
1392*/0x0DA4, 1972, 2, 16, /* 0 0 1 0 0 1 0 1 1 0 1 1 2/16/1972
1393*/0x0D49, 1973, 2, 4, /* 1 0 0 1 0 0 1 0 1 0 1 1 2/4/1973
1394*/0x0A95, 1974, 1, 24, /* 1 0 1 0 1 0 0 1 0 1 0 1 1/24/1974
1395*/0x052D, 1975, 1, 13, /* 1 0 1 1 0 1 0 0 1 0 1 0 1/13/1975
1396*/0x0A5D, 1976, 1, 2, /* 1 0 1 1 1 0 1 0 0 1 0 1 1/2/1976
1397*/0x055A, 1976, 12, 22, /* 0 1 0 1 1 0 1 0 1 0 1 0 12/22/1976
1398*/0x0AD5, 1977, 12, 11, /* 1 0 1 0 1 0 1 1 0 1 0 1 12/11/1977
1399*/0x06AA, 1978, 12, 1, /* 0 1 0 1 0 1 0 1 0 1 1 0 12/1/1978
1400*/0x0695, 1979, 11, 20, /* 1 0 1 0 1 0 0 1 0 1 1 0 11/20/1979
1401*/0x052B, 1980, 11, 8, /* 1 1 0 1 0 1 0 0 1 0 1 0 11/8/1980
1402*/0x0A57, 1981, 10, 28, /* 1 1 1 0 1 0 1 0 0 1 0 1 10/28/1981
1403*/0x04AE, 1982, 10, 18, /* 0 1 1 1 0 1 0 1 0 0 1 0 10/18/1982
1404*/0x0976, 1983, 10, 7, /* 0 1 1 0 1 1 1 0 1 0 0 1 10/7/1983
1405*/0x056C, 1984, 9, 26, /* 0 0 1 1 0 1 1 0 1 0 1 0 9/26/1984
1406*/0x0B55, 1985, 9, 15, /* 1 0 1 0 1 0 1 0 1 1 0 1 9/15/1985
1407*/0x0AAA, 1986, 9, 5, /* 0 1 0 1 0 1 0 1 0 1 0 1 9/5/1986
1408*/0x0A55, 1987, 8, 25, /* 1 0 1 0 1 0 1 0 0 1 0 1 8/25/1987
1409*/0x04AD, 1988, 8, 13, /* 1 0 1 1 0 1 0 1 0 0 1 0 8/13/1988
1410*/0x095D, 1989, 8, 2, /* 1 0 1 1 1 0 1 0 1 0 0 1 8/2/1989
1411*/0x02DA, 1990, 7, 23, /* 0 1 0 1 1 0 1 1 0 1 0 0 7/23/1990
1412*/0x05D9, 1991, 7, 12, /* 1 0 0 1 1 0 1 1 1 0 1 0 7/12/1991
1413*/0x0DB2, 1992, 7, 1, /* 0 1 0 0 1 1 0 1 1 0 1 1 7/1/1992
1414*/0x0BA4, 1993, 6, 21, /* 0 0 1 0 0 1 0 1 1 1 0 1 6/21/1993
1415*/0x0B4A, 1994, 6, 10, /* 0 1 0 1 0 0 1 0 1 1 0 1 6/10/1994
1416*/0x0A55, 1995, 5, 30, /* 1 0 1 0 1 0 1 0 0 1 0 1 5/30/1995
1417*/0x02B5, 1996, 5, 18, /* 1 0 1 0 1 1 0 1 0 1 0 0 5/18/1996
1418*/0x0575, 1997, 5, 7, /* 1 0 1 0 1 1 1 0 1 0 1 0 5/7/1997
1419*/0x0B6A, 1998, 4, 27, /* 0 1 0 1 0 1 1 0 1 1 0 1 4/27/1998
1420*/0x0BD2, 1999, 4, 17, /* 0 1 0 0 1 0 1 1 1 1 0 1 4/17/1999
1421*/0x0BC4, 2000, 4, 6, /* 0 0 1 0 0 0 1 1 1 1 0 1 4/6/2000
1422*/0x0B89, 2001, 3, 26, /* 1 0 0 1 0 0 0 1 1 1 0 1 3/26/2001
1423*/0x0A95, 2002, 3, 15, /* 1 0 1 0 1 0 0 1 0 1 0 1 3/15/2002
1424*/0x052D, 2003, 3, 4, /* 1 0 1 1 0 1 0 0 1 0 1 0 3/4/2003
1425*/0x05AD, 2004, 2, 21, /* 1 0 1 1 0 1 0 1 1 0 1 0 2/21/2004
1426*/0x0B6A, 2005, 2, 10, /* 0 1 0 1 0 1 1 0 1 1 0 1 2/10/2005
1427*/0x06D4, 2006, 1, 31, /* 0 0 1 0 1 0 1 1 0 1 1 0 1/31/2006
1428*/0x0DC9, 2007, 1, 20, /* 1 0 0 1 0 0 1 1 1 0 1 1 1/20/2007
1429*/0x0D92, 2008, 1, 10, /* 0 1 0 0 1 0 0 1 1 0 1 1 1/10/2008
1430*/0x0AA6, 2008, 12, 29, /* 0 1 1 0 0 1 0 1 0 1 0 1 12/29/2008
1431*/0x0956, 2009, 12, 18, /* 0 1 1 0 1 0 1 0 1 0 0 1 12/18/2009
1432*/0x02AE, 2010, 12, 7, /* 0 1 1 1 0 1 0 1 0 1 0 0 12/7/2010
1433*/0x056D, 2011, 11, 26, /* 1 0 1 1 0 1 1 0 1 0 1 0 11/26/2011
1434*/0x036A, 2012, 11, 15, /* 0 1 0 1 0 1 1 0 1 1 0 0 11/15/2012
1435*/0x0B55, 2013, 11, 4, /* 1 0 1 0 1 0 1 0 1 1 0 1 11/4/2013
1436*/0x0AAA, 2014, 10, 25, /* 0 1 0 1 0 1 0 1 0 1 0 1 10/25/2014
1437*/0x094D, 2015, 10, 14, /* 1 0 1 1 0 0 1 0 1 0 0 1 10/14/2015
1438*/0x049D, 2016, 10, 2, /* 1 0 1 1 1 0 0 1 0 0 1 0 10/2/2016
1439*/0x095D, 2017, 9, 21, /* 1 0 1 1 1 0 1 0 1 0 0 1 9/21/2017
1440*/0x02BA, 2018, 9, 11, /* 0 1 0 1 1 1 0 1 0 1 0 0 9/11/2018
1441*/0x05B5, 2019, 8, 31, /* 1 0 1 0 1 1 0 1 1 0 1 0 8/31/2019
1442*/0x05AA, 2020, 8, 20, /* 0 1 0 1 0 1 0 1 1 0 1 0 8/20/2020
1443*/0x0D55, 2021, 8, 9, /* 1 0 1 0 1 0 1 0 1 0 1 1 8/9/2021
1444*/0x0A9A, 2022, 7, 30, /* 0 1 0 1 1 0 0 1 0 1 0 1 7/30/2022
1445*/0x092E, 2023, 7, 19, /* 0 1 1 1 0 1 0 0 1 0 0 1 7/19/2023
1446*/0x026E, 2024, 7, 7, /* 0 1 1 1 0 1 1 0 0 1 0 0 7/7/2024
1447*/0x055D, 2025, 6, 26, /* 1 0 1 1 1 0 1 0 1 0 1 0 6/26/2025
1448*/0x0ADA, 2026, 6, 16, /* 0 1 0 1 1 0 1 1 0 1 0 1 6/16/2026
1449*/0x06D4, 2027, 6, 6, /* 0 0 1 0 1 0 1 1 0 1 1 0 6/6/2027
1450*/0x06A5, 2028, 5, 25, /* 1 0 1 0 0 1 0 1 0 1 1 0 5/25/2028
1451*/0x054B, 2029, 5, 14, /* 1 1 0 1 0 0 1 0 1 0 1 0 5/14/2029
1452*/0x0A97, 2030, 5, 3, /* 1 1 1 0 1 0 0 1 0 1 0 1 5/3/2030
1453*/0x054E, 2031, 4, 23, /* 0 1 1 1 0 0 1 0 1 0 1 0 4/23/2031
1454*/0x0AAE, 2032, 4, 11, /* 0 1 1 1 0 1 0 1 0 1 0 1 4/11/2032
1455*/0x05AC, 2033, 4, 1, /* 0 0 1 1 0 1 0 1 1 0 1 0 4/1/2033
1456*/0x0BA9, 2034, 3, 21, /* 1 0 0 1 0 1 0 1 1 1 0 1 3/21/2034
1457*/0x0D92, 2035, 3, 11, /* 0 1 0 0 1 0 0 1 1 0 1 1 3/11/2035
1458*/0x0B25, 2036, 2, 28, /* 1 0 1 0 0 1 0 0 1 1 0 1 2/28/2036
1459*/0x064B, 2037, 2, 16, /* 1 1 0 1 0 0 1 0 0 1 1 0 2/16/2037
1460*/0x0CAB, 2038, 2, 5, /* 1 1 0 1 0 1 0 1 0 0 1 1 2/5/2038
1461*/0x055A, 2039, 1, 26, /* 0 1 0 1 1 0 1 0 1 0 1 0 1/26/2039
1462*/0x0B55, 2040, 1, 15, /* 1 0 1 0 1 0 1 0 1 1 0 1 1/15/2040
1463*/0x06D2, 2041, 1, 4, /* 0 1 0 0 1 0 1 1 0 1 1 0 1/4/2041
1464*/0x0EA5, 2041, 12, 24, /* 1 0 1 0 0 1 0 1 0 1 1 1 12/24/2041
1465*/0x0E4A, 2042, 12, 14, /* 0 1 0 1 0 0 1 0 0 1 1 1 12/14/2042
1466*/0x0A95, 2043, 12, 3, /* 1 0 1 0 1 0 0 1 0 1 0 1 12/3/2043
1467*/0x052D, 2044, 11, 21, /* 1 0 1 1 0 1 0 0 1 0 1 0 11/21/2044
1468*/0x0AAD, 2045, 11, 10, /* 1 0 1 1 0 1 0 1 0 1 0 1 11/10/2045
1469*/0x036C, 2046, 10, 31, /* 0 0 1 1 0 1 1 0 1 1 0 0 10/31/2046
1470*/0x0759, 2047, 10, 20, /* 1 0 0 1 1 0 1 0 1 1 1 0 10/20/2047
1471*/0x06D2, 2048, 10, 9, /* 0 1 0 0 1 0 1 1 0 1 1 0 10/9/2048
1472*/0x0695, 2049, 9, 28, /* 1 0 1 0 1 0 0 1 0 1 1 0 9/28/2049
1473*/0x052D, 2050, 9, 17, /* 1 0 1 1 0 1 0 0 1 0 1 0 9/17/2050
1474*/0x0A5B, 2051, 9, 6, /* 1 1 0 1 1 0 1 0 0 1 0 1 9/6/2051
1475*/0x04BA, 2052, 8, 26, /* 0 1 0 1 1 1 0 1 0 0 1 0 8/26/2052
1476*/0x09BA, 2053, 8, 15, /* 0 1 0 1 1 1 0 1 1 0 0 1 8/15/2053
1477*/0x03B4, 2054, 8, 5, /* 0 0 1 0 1 1 0 1 1 1 0 0 8/5/2054
1478*/0x0B69, 2055, 7, 25, /* 1 0 0 1 0 1 1 0 1 1 0 1 7/25/2055
1479*/0x0B52, 2056, 7, 14, /* 0 1 0 0 1 0 1 0 1 1 0 1 7/14/2056
1480*/0x0AA6, 2057, 7, 3, /* 0 1 1 0 0 1 0 1 0 1 0 1 7/3/2057
1481*/0x04B6, 2058, 6, 22, /* 0 1 1 0 1 1 0 1 0 0 1 0 6/22/2058
1482*/0x096D, 2059, 6, 11, /* 1 0 1 1 0 1 1 0 1 0 0 1 6/11/2059
1483*/0x02EC, 2060, 5, 31, /* 0 0 1 1 0 1 1 1 0 1 0 0 5/31/2060
1484*/0x06D9, 2061, 5, 20, /* 1 0 0 1 1 0 1 1 0 1 1 0 5/20/2061
1485*/0x0EB2, 2062, 5, 10, /* 0 1 0 0 1 1 0 1 0 1 1 1 5/10/2062
1486*/0x0D54, 2063, 4, 30, /* 0 0 1 0 1 0 1 0 1 0 1 1 4/30/2063
1487*/0x0D2A, 2064, 4, 18, /* 0 1 0 1 0 1 0 0 1 0 1 1 4/18/2064
1488*/0x0A56, 2065, 4, 7, /* 0 1 1 0 1 0 1 0 0 1 0 1 4/7/2065
1489*/0x04AE, 2066, 3, 27, /* 0 1 1 1 0 1 0 1 0 0 1 0 3/27/2066
1490*/0x096D, 2067, 3, 16, /* 1 0 1 1 0 1 1 0 1 0 0 1 3/16/2067
1491*/0x0D6A, 2068, 3, 5, /* 0 1 0 1 0 1 1 0 1 0 1 1 3/5/2068
1492*/0x0B54, 2069, 2, 23, /* 0 0 1 0 1 0 1 0 1 1 0 1 2/23/2069
1493*/0x0B29, 2070, 2, 12, /* 1 0 0 1 0 1 0 0 1 1 0 1 2/12/2070
1494*/0x0A93, 2071, 2, 1, /* 1 1 0 0 1 0 0 1 0 1 0 1 2/1/2071
1495*/0x052B, 2072, 1, 21, /* 1 1 0 1 0 1 0 0 1 0 1 0 1/21/2072
1496*/0x0A57, 2073, 1, 9, /* 1 1 1 0 1 0 1 0 0 1 0 1 1/9/2073
1497*/0x0536, 2073, 12, 30, /* 0 1 1 0 1 1 0 0 1 0 1 0 12/30/2073
1498*/0x0AB5, 2074, 12, 19, /* 1 0 1 0 1 1 0 1 0 1 0 1 12/19/2074
1499*/0x06AA, 2075, 12, 9, /* 0 1 0 1 0 1 0 1 0 1 1 0 12/9/2075
1500*/0x0E93, 2076, 11, 27, /* 1 1 0 0 1 0 0 1 0 1 1 1 11/27/2076
1501*/ 0, 2077, 11, 17, /* 0 0 0 0 0 0 0 0 0 0 0 0 11/17/2077
*/ };
// Direct inline initialization of DateMapping array would produce a lot of code bloat.
// We take advantage of C# compiler compiles inline initialization of primitive type array into very compact code.
// So we start with raw data stored in primitive type array, and initialize the DateMapping out of it
DateMapping[] mapping = new DateMapping[rawData.Length / 4];
for (int i = 0; i < mapping.Length; i++)
mapping[i] = new DateMapping(rawData[i * 4], rawData[i * 4 + 1], rawData[i * 4 + 2], rawData[i * 4 + 3]);
return mapping;
}
public const int UmAlQuraEra = 1;
private const int DatePartYear = 0;
private const int DatePartDayOfYear = 1;
private const int DatePartMonth = 2;
private const int DatePartDay = 3;
private static readonly DateTime s_minDate = new DateTime(1900, 4, 30);
private static readonly DateTime s_maxDate = new DateTime((new DateTime(2077, 11, 16, 23, 59, 59, 999)).Ticks + 9999);
public override DateTime MinSupportedDateTime => s_minDate;
public override DateTime MaxSupportedDateTime => s_maxDate;
public override CalendarAlgorithmType AlgorithmType => CalendarAlgorithmType.LunarCalendar;
public UmAlQuraCalendar()
{
}
internal override CalendarId BaseCalendarID => CalendarId.HIJRI;
internal override CalendarId ID => CalendarId.UMALQURA;
protected override int DaysInYearBeforeMinSupportedYear =>
// HijriCalendar has same number of days as UmAlQuraCalendar for any given year
// HijriCalendar says year 1317 has 355 days.
355;
private static void ConvertHijriToGregorian(int HijriYear, int HijriMonth, int HijriDay, out int yg, out int mg, out int dg)
{
Debug.Assert((HijriYear >= MinCalendarYear) && (HijriYear <= MaxCalendarYear), "Hijri year is out of range.");
Debug.Assert(HijriMonth >= 1, "Hijri month is out of range.");
Debug.Assert(HijriDay >= 1, "Hijri day is out of range.");
int nDays = HijriDay - 1;
int index = HijriYear - MinCalendarYear;
DateTime dt = s_hijriYearInfo[index].GregorianDate;
int b = s_hijriYearInfo[index].HijriMonthsLengthFlags;
for (int m = 1; m < HijriMonth; m++)
{
// Add the months lengths before mh
nDays = nDays + 29 + (b & 1);
b >>= 1;
}
dt = dt.AddDays(nDays);
dt.GetDatePart(out yg, out mg, out dg);
}
private static long GetAbsoluteDateUmAlQura(int year, int month, int day)
{
ConvertHijriToGregorian(year, month, day, out int yg, out int mg, out int dg);
return GregorianCalendar.GetAbsoluteDate(yg, mg, dg);
}
internal static void CheckTicksRange(long ticks)
{
if (ticks < s_minDate.Ticks || ticks > s_maxDate.Ticks)
{
throw new ArgumentOutOfRangeException(
"time",
ticks,
SR.Format(
CultureInfo.InvariantCulture,
SR.ArgumentOutOfRange_CalendarRange,
s_minDate,
s_maxDate));
}
}
internal static void CheckEraRange(int era)
{
if (era != CurrentEra && era != UmAlQuraEra)
{
throw new ArgumentOutOfRangeException(nameof(era), era, SR.ArgumentOutOfRange_InvalidEraValue);
}
}
internal static void CheckYearRange(int year, int era)
{
CheckEraRange(era);
if (year < MinCalendarYear || year > MaxCalendarYear)
{
throw new ArgumentOutOfRangeException(
nameof(year),
year,
SR.Format(SR.ArgumentOutOfRange_Range, MinCalendarYear, MaxCalendarYear));
}
}
internal static void CheckYearMonthRange(int year, int month, int era)
{
CheckYearRange(year, era);
if (month < 1 || month > 12)
{
throw new ArgumentOutOfRangeException(nameof(month), month, SR.ArgumentOutOfRange_Month);
}
}
private static void ConvertGregorianToHijri(DateTime time, out int HijriYear, out int HijriMonth, out int HijriDay)
{
Debug.Assert((time.Ticks >= s_minDate.Ticks) && (time.Ticks <= s_maxDate.Ticks), "Gregorian date is out of range.");
// Find the index where we should start our search by quessing the Hijri year that we will be in HijriYearInfo.
// A Hijri year is 354 or 355 days. Use 355 days so that we will search from a lower index.
int index = (int)((time.Ticks - s_minDate.Ticks) / Calendar.TicksPerDay) / 355;
do
{
} while (time.CompareTo(s_hijriYearInfo[++index].GregorianDate) > 0); // while greater
if (time.CompareTo(s_hijriYearInfo[index].GregorianDate) != 0)
{
index--;
}
TimeSpan ts = time.Subtract(s_hijriYearInfo[index].GregorianDate);
int yh1 = index + MinCalendarYear;
int mh1 = 1;
int dh1 = 1;
double nDays = ts.TotalDays;
int b = s_hijriYearInfo[index].HijriMonthsLengthFlags;
int daysPerThisMonth = 29 + (b & 1);
while (nDays >= daysPerThisMonth)
{
nDays -= daysPerThisMonth;
b >>= 1;
daysPerThisMonth = 29 + (b & 1);
mh1++;
}
dh1 += (int)nDays;
HijriDay = dh1;
HijriMonth = mh1;
HijriYear = yh1;
}
///
/// First, we get the absolute date (the number of days from January 1st, 1 A.C) for the given ticks.
/// Use the formula (((AbsoluteDate - 226894) * 33) / (33 * 365 + 8)) + 1, we can a rough value for the UmAlQura year.
/// In order to get the exact UmAlQura year, we compare the exact absolute date for UmAlQuraYear and (UmAlQuraYear + 1).
/// From here, we can get the correct UmAlQura year.
///
private int GetDatePart(DateTime time, int part)
{
long ticks = time.Ticks;
CheckTicksRange(ticks);
ConvertGregorianToHijri(time, out int UmAlQuraYear, out int UmAlQuraMonth, out int UmAlQuraDay);
if (part == DatePartYear)
{
return UmAlQuraYear;
}
if (part == DatePartMonth)
{
return UmAlQuraMonth;
}
if (part == DatePartDay)
{
return UmAlQuraDay;
}
if (part == DatePartDayOfYear)
{
return (int)(GetAbsoluteDateUmAlQura(UmAlQuraYear, UmAlQuraMonth, UmAlQuraDay) - GetAbsoluteDateUmAlQura(UmAlQuraYear, 1, 1) + 1);
}
// Incorrect part value.
throw new InvalidOperationException(SR.InvalidOperation_DateTimeParsing);
}
public override DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException(
nameof(months),
months,
SR.Format(SR.ArgumentOutOfRange_Range, -120000, 120000));
}
// Get the date in UmAlQura calendar.
int y = GetDatePart(time, DatePartYear);
int m = GetDatePart(time, DatePartMonth);
int d = GetDatePart(time, DatePartDay);
int i = m - 1 + months;
if (i >= 0)
{
m = i % 12 + 1;
y += i / 12;
}
else
{
m = 12 + (i + 1) % 12;
y += (i - 11) / 12;
}
if (d > 29)
{
int days = GetDaysInMonth(y, m);
if (d > days)
{
d = days;
}
}
CheckYearRange(y, UmAlQuraEra);
DateTime dt = new DateTime(GetAbsoluteDateUmAlQura(y, m, d) * TicksPerDay + time.Ticks % TicksPerDay);
Calendar.CheckAddResult(dt.Ticks, MinSupportedDateTime, MaxSupportedDateTime);
return dt;
}
public override DateTime AddYears(DateTime time, int years)
{
return AddMonths(time, years * 12);
}
public override int GetDayOfMonth(DateTime time)
{
return GetDatePart(time, DatePartDay);
}
public override DayOfWeek GetDayOfWeek(DateTime time)
{
return (DayOfWeek)((int)(time.Ticks / TicksPerDay + 1) % 7);
}
public override int GetDayOfYear(DateTime time)
{
return GetDatePart(time, DatePartDayOfYear);
}
public override int GetDaysInMonth(int year, int month, int era)
{
CheckYearMonthRange(year, month, era);
if ((s_hijriYearInfo[year - MinCalendarYear].HijriMonthsLengthFlags & (1 << month - 1)) == 0)
{
return 29;
}
else
{
return 30;
}
}
internal static int RealGetDaysInYear(int year)
{
int days = 0;
Debug.Assert((year >= MinCalendarYear) && (year <= MaxCalendarYear), "Hijri year is out of range.");
int b = s_hijriYearInfo[year - MinCalendarYear].HijriMonthsLengthFlags;
for (int m = 1; m <= 12; m++)
{
days = days + 29 + (b & 1); /* Add the months lengths before mh */
b >>= 1;
}
Debug.Assert((days == 354) || (days == 355), "Hijri year has to be 354 or 355 days.");
return days;
}
public override int GetDaysInYear(int year, int era)
{
CheckYearRange(year, era);
return RealGetDaysInYear(year);
}
public override int GetEra(DateTime time)
{
CheckTicksRange(time.Ticks);
return UmAlQuraEra;
}
public override int[] Eras => new int[] { UmAlQuraEra };
public override int GetMonth(DateTime time)
{
return GetDatePart(time, DatePartMonth);
}
public override int GetMonthsInYear(int year, int era)
{
CheckYearRange(year, era);
return 12;
}
public override int GetYear(DateTime time)
{
return GetDatePart(time, DatePartYear);
}
public override bool IsLeapDay(int year, int month, int day, int era)
{
if (day >= 1 && day <= 29)
{
CheckYearMonthRange(year, month, era);
return false;
}
// The year/month/era value checking is done in GetDaysInMonth().
int daysInMonth = GetDaysInMonth(year, month, era);
if (day < 1 || day > daysInMonth)
{
throw new ArgumentOutOfRangeException(
nameof(day),
day,
SR.Format(SR.ArgumentOutOfRange_Day, daysInMonth, month));
}
return false;
}
public override int GetLeapMonth(int year, int era)
{
CheckYearRange(year, era);
return 0;
}
public override bool IsLeapMonth(int year, int month, int era)
{
CheckYearMonthRange(year, month, era);
return false;
}
public override bool IsLeapYear(int year, int era)
{
CheckYearRange(year, era);
return RealGetDaysInYear(year) == 355;
}
public override DateTime ToDateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int era)
{
if (day >= 1 && day <= 29)
{
CheckYearMonthRange(year, month, era);
goto DayInRang;
}
// The year/month/era value checking is done in GetDaysInMonth().
int daysInMonth = GetDaysInMonth(year, month, era);
if (day < 1 || day > daysInMonth)
{
throw new ArgumentOutOfRangeException(
nameof(day),
day,
SR.Format(SR.ArgumentOutOfRange_Day, daysInMonth, month));
}
DayInRang:
long lDate = GetAbsoluteDateUmAlQura(year, month, day);
if (lDate < 0)
{
throw new ArgumentOutOfRangeException(null, SR.ArgumentOutOfRange_BadYearMonthDay);
}
return new DateTime(lDate * GregorianCalendar.TicksPerDay + TimeToTicks(hour, minute, second, millisecond));
}
private const int DefaultTwoDigitYearMax = 1451;
public override int TwoDigitYearMax
{
get
{
if (_twoDigitYearMax == -1)
{
_twoDigitYearMax = GetSystemTwoDigitYearSetting(ID, DefaultTwoDigitYearMax);
}
return _twoDigitYearMax;
}
set
{
if (value != 99 && (value < MinCalendarYear || value > MaxCalendarYear))
{
throw new ArgumentOutOfRangeException(
nameof(value),
value,
SR.Format(SR.ArgumentOutOfRange_Range, MinCalendarYear, MaxCalendarYear));
}
VerifyWritable();
// We allow year 99 to be set so that one can make ToFourDigitYearMax a no-op by setting TwoDigitYearMax to 99.
_twoDigitYearMax = value;
}
}
public override int ToFourDigitYear(int year)
{
if (year < 0)
{
throw new ArgumentOutOfRangeException(nameof(year), year, SR.ArgumentOutOfRange_NeedNonNegNum);
}
if (year < 100)
{
return base.ToFourDigitYear(year);
}
if (year < MinCalendarYear || year > MaxCalendarYear)
{
throw new ArgumentOutOfRangeException(
nameof(year),
year,
SR.Format(SR.ArgumentOutOfRange_Range, MinCalendarYear, MaxCalendarYear));
}
return year;
}
}
}