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Diffstat (limited to 'src/mscorlib/corefx/System/Globalization/PersianCalendar.cs')
-rw-r--r-- | src/mscorlib/corefx/System/Globalization/PersianCalendar.cs | 611 |
1 files changed, 0 insertions, 611 deletions
diff --git a/src/mscorlib/corefx/System/Globalization/PersianCalendar.cs b/src/mscorlib/corefx/System/Globalization/PersianCalendar.cs deleted file mode 100644 index b8b3da6911..0000000000 --- a/src/mscorlib/corefx/System/Globalization/PersianCalendar.cs +++ /dev/null @@ -1,611 +0,0 @@ -// 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; -using System.Diagnostics.Contracts; - -namespace System.Globalization -{ - //////////////////////////////////////////////////////////////////////////// - // - // Notes about PersianCalendar - // - //////////////////////////////////////////////////////////////////////////// - // Modern Persian calendar is a solar observation based calendar. Each new year begins on the day when the vernal equinox occurs before noon. - // The epoch is the date of the vernal equinox prior to the epoch of the Islamic calendar (March 19, 622 Julian or March 22, 622 Gregorian) - - // There is no Persian year 0. Ordinary years have 365 days. Leap years have 366 days with the last month (Esfand) gaining the extra day. - /* - ** Calendar support range: - ** Calendar Minimum Maximum - ** ========== ========== ========== - ** Gregorian 0622/03/22 9999/12/31 - ** Persian 0001/01/01 9378/10/13 - */ - - [Serializable] - public class PersianCalendar : Calendar - { - public static readonly int PersianEra = 1; - - internal static long PersianEpoch = new DateTime(622, 3, 22).Ticks / GregorianCalendar.TicksPerDay; - private const int ApproximateHalfYear = 180; - - internal const int DatePartYear = 0; - internal const int DatePartDayOfYear = 1; - internal const int DatePartMonth = 2; - internal const int DatePartDay = 3; - internal const int MonthsPerYear = 12; - - internal static int[] DaysToMonth = { 0, 31, 62, 93, 124, 155, 186, 216, 246, 276, 306, 336, 366 }; - - internal const int MaxCalendarYear = 9378; - internal const int MaxCalendarMonth = 10; - internal const int MaxCalendarDay = 13; - - // Persian calendar (year: 1, month: 1, day:1 ) = Gregorian (year: 622, month: 3, day: 22) - // This is the minimal Gregorian date that we support in the PersianCalendar. - internal static DateTime minDate = new DateTime(622, 3, 22); - internal static DateTime maxDate = DateTime.MaxValue; - - public override DateTime MinSupportedDateTime - { - get - { - return (minDate); - } - } - - public override DateTime MaxSupportedDateTime - { - get - { - return (maxDate); - } - } - - public override CalendarAlgorithmType AlgorithmType - { - get - { - return CalendarAlgorithmType.SolarCalendar; - } - } - - // Construct an instance of Persian calendar. - - public PersianCalendar() - { - } - - - internal override CalendarId BaseCalendarID - { - get - { - return CalendarId.GREGORIAN; - } - } - - internal override CalendarId ID - { - get - { - return CalendarId.PERSIAN; - } - } - - - /*=================================GetAbsoluteDatePersian========================== - **Action: Gets the Absolute date for the given Persian date. The absolute date means - ** the number of days from January 1st, 1 A.D. - **Returns: - **Arguments: - **Exceptions: - ============================================================================*/ - - private long GetAbsoluteDatePersian(int year, int month, int day) - { - if (year >= 1 && year <= MaxCalendarYear && month >= 1 && month <= 12) - { - int ordinalDay = DaysInPreviousMonths(month) + day - 1; // day is one based, make 0 based since this will be the number of days we add to beginning of year below - int approximateDaysFromEpochForYearStart = (int)(CalendricalCalculationsHelper.MeanTropicalYearInDays * (year - 1)); - long yearStart = CalendricalCalculationsHelper.PersianNewYearOnOrBefore(PersianEpoch + approximateDaysFromEpochForYearStart + ApproximateHalfYear); - yearStart += ordinalDay; - return yearStart; - } - throw new ArgumentOutOfRangeException(null, SR.ArgumentOutOfRange_BadYearMonthDay); - } - - internal static void CheckTicksRange(long ticks) - { - if (ticks < minDate.Ticks || ticks > maxDate.Ticks) - { - throw new ArgumentOutOfRangeException( - "time", - String.Format( - CultureInfo.InvariantCulture, - SR.ArgumentOutOfRange_CalendarRange, - minDate, - maxDate)); - } - } - - internal static void CheckEraRange(int era) - { - if (era != CurrentEra && era != PersianEra) - { - throw new ArgumentOutOfRangeException(nameof(era), SR.ArgumentOutOfRange_InvalidEraValue); - } - } - - internal static void CheckYearRange(int year, int era) - { - CheckEraRange(era); - if (year < 1 || year > MaxCalendarYear) - { - throw new ArgumentOutOfRangeException( - nameof(year), - String.Format( - CultureInfo.CurrentCulture, - SR.ArgumentOutOfRange_Range, - 1, - MaxCalendarYear)); - } - } - - internal static void CheckYearMonthRange(int year, int month, int era) - { - CheckYearRange(year, era); - if (year == MaxCalendarYear) - { - if (month > MaxCalendarMonth) - { - throw new ArgumentOutOfRangeException( - nameof(month), - String.Format( - CultureInfo.CurrentCulture, - SR.ArgumentOutOfRange_Range, - 1, - MaxCalendarMonth)); - } - } - - if (month < 1 || month > 12) - { - throw new ArgumentOutOfRangeException(nameof(month), SR.ArgumentOutOfRange_Month); - } - } - - private static int MonthFromOrdinalDay(int ordinalDay) - { - Debug.Assert(ordinalDay <= 366); - int index = 0; - while (ordinalDay > DaysToMonth[index]) - index++; - - return index; - } - - private static int DaysInPreviousMonths(int month) - { - Debug.Assert(1 <= month && month <= 12); - --month; // months are one based but for calculations use 0 based - return DaysToMonth[month]; - } - - /*=================================GetDatePart========================== - **Action: Returns a given date part of this <i>DateTime</i>. This method is used - ** to compute the year, day-of-year, month, or day part. - **Returns: - **Arguments: - **Exceptions: ArgumentException if part is incorrect. - ============================================================================*/ - - internal int GetDatePart(long ticks, int part) - { - long NumDays; // The calculation buffer in number of days. - - CheckTicksRange(ticks); - - // - // Get the absolute date. The absolute date is the number of days from January 1st, 1 A.D. - // 1/1/0001 is absolute date 1. - // - NumDays = ticks / GregorianCalendar.TicksPerDay + 1; - - // - // Calculate the appromixate Persian Year. - // - - long yearStart = CalendricalCalculationsHelper.PersianNewYearOnOrBefore(NumDays); - int y = (int)(Math.Floor(((yearStart - PersianEpoch) / CalendricalCalculationsHelper.MeanTropicalYearInDays) + 0.5)) + 1; - Debug.Assert(y >= 1); - - if (part == DatePartYear) - { - return y; - } - - // - // Calculate the Persian Month. - // - - int ordinalDay = (int)(NumDays - CalendricalCalculationsHelper.GetNumberOfDays(this.ToDateTime(y, 1, 1, 0, 0, 0, 0, 1))); - - if (part == DatePartDayOfYear) - { - return ordinalDay; - } - - int m = MonthFromOrdinalDay(ordinalDay); - Debug.Assert(ordinalDay >= 1); - Debug.Assert(m >= 1 && m <= 12); - if (part == DatePartMonth) - { - return m; - } - - int d = ordinalDay - DaysInPreviousMonths(m); - Debug.Assert(1 <= d); - Debug.Assert(d <= 31); - - // - // Calculate the Persian Day. - // - - if (part == DatePartDay) - { - return (d); - } - - // Incorrect part value. - throw new InvalidOperationException(SR.InvalidOperation_DateTimeParsing); - } - - // Returns the DateTime resulting from adding the given number of - // months to the specified DateTime. The result is computed by incrementing - // (or decrementing) the year and month parts of the specified DateTime by - // value months, and, if required, adjusting the day part of the - // resulting date downwards to the last day of the resulting month in the - // resulting year. The time-of-day part of the result is the same as the - // time-of-day part of the specified DateTime. - // - // In more precise terms, considering the specified DateTime to be of the - // form y / m / d + t, where y is the - // year, m is the month, d is the day, and t is the - // time-of-day, the result is y1 / m1 / d1 + t, - // where y1 and m1 are computed by adding value months - // to y and m, and d1 is the largest value less than - // or equal to d that denotes a valid day in month m1 of year - // y1. - // - - - public override DateTime AddMonths(DateTime time, int months) - { - if (months < -120000 || months > 120000) - { - throw new ArgumentOutOfRangeException( - nameof(months), - String.Format( - CultureInfo.CurrentCulture, - SR.ArgumentOutOfRange_Range, - -120000, - 120000)); - } - Contract.EndContractBlock(); - // Get the date in Persian calendar. - int y = GetDatePart(time.Ticks, DatePartYear); - int m = GetDatePart(time.Ticks, DatePartMonth); - int d = GetDatePart(time.Ticks, DatePartDay); - int i = m - 1 + months; - if (i >= 0) - { - m = i % 12 + 1; - y = y + i / 12; - } - else - { - m = 12 + (i + 1) % 12; - y = y + (i - 11) / 12; - } - int days = GetDaysInMonth(y, m); - if (d > days) - { - d = days; - } - long ticks = GetAbsoluteDatePersian(y, m, d) * TicksPerDay + time.Ticks % TicksPerDay; - Calendar.CheckAddResult(ticks, MinSupportedDateTime, MaxSupportedDateTime); - return (new DateTime(ticks)); - } - - // Returns the DateTime resulting from adding the given number of - // years to the specified DateTime. The result is computed by incrementing - // (or decrementing) the year part of the specified DateTime by value - // years. If the month and day of the specified DateTime is 2/29, and if the - // resulting year is not a leap year, the month and day of the resulting - // DateTime becomes 2/28. Otherwise, the month, day, and time-of-day - // parts of the result are the same as those of the specified DateTime. - // - - - public override DateTime AddYears(DateTime time, int years) - { - return (AddMonths(time, years * 12)); - } - - // Returns the day-of-month part of the specified DateTime. The returned - // value is an integer between 1 and 31. - // - - - public override int GetDayOfMonth(DateTime time) - { - return (GetDatePart(time.Ticks, DatePartDay)); - } - - // Returns the day-of-week part of the specified DateTime. The returned value - // is an integer between 0 and 6, where 0 indicates Sunday, 1 indicates - // Monday, 2 indicates Tuesday, 3 indicates Wednesday, 4 indicates - // Thursday, 5 indicates Friday, and 6 indicates Saturday. - // - - - public override DayOfWeek GetDayOfWeek(DateTime time) - { - return ((DayOfWeek)((int)(time.Ticks / TicksPerDay + 1) % 7)); - } - - // Returns the day-of-year part of the specified DateTime. The returned value - // is an integer between 1 and 366. - // - - - public override int GetDayOfYear(DateTime time) - { - return (GetDatePart(time.Ticks, DatePartDayOfYear)); - } - - // Returns the number of days in the month given by the year and - // month arguments. - // - - - public override int GetDaysInMonth(int year, int month, int era) - { - CheckYearMonthRange(year, month, era); - - if ((month == MaxCalendarMonth) && (year == MaxCalendarYear)) - { - return MaxCalendarDay; - } - - int daysInMonth = DaysToMonth[month] - DaysToMonth[month - 1]; - if ((month == MonthsPerYear) && !IsLeapYear(year)) - { - Debug.Assert(daysInMonth == 30); - --daysInMonth; - } - return daysInMonth; - } - - // Returns the number of days in the year given by the year argument for the current era. - // - - public override int GetDaysInYear(int year, int era) - { - CheckYearRange(year, era); - if (year == MaxCalendarYear) - { - return DaysToMonth[MaxCalendarMonth - 1] + MaxCalendarDay; - } - // Common years have 365 days. Leap years have 366 days. - return (IsLeapYear(year, CurrentEra) ? 366 : 365); - } - - // Returns the era for the specified DateTime value. - - - public override int GetEra(DateTime time) - { - CheckTicksRange(time.Ticks); - return (PersianEra); - } - - - - public override int[] Eras - { - get - { - return (new int[] { PersianEra }); - } - } - - // Returns the month part of the specified DateTime. The returned value is an - // integer between 1 and 12. - // - - - public override int GetMonth(DateTime time) - { - return (GetDatePart(time.Ticks, DatePartMonth)); - } - - // Returns the number of months in the specified year and era. - - - public override int GetMonthsInYear(int year, int era) - { - CheckYearRange(year, era); - if (year == MaxCalendarYear) - { - return MaxCalendarMonth; - } - return (12); - } - - // Returns the year part of the specified DateTime. The returned value is an - // integer between 1 and MaxCalendarYear. - // - - - public override int GetYear(DateTime time) - { - return (GetDatePart(time.Ticks, DatePartYear)); - } - - // Checks whether a given day in the specified era is a leap day. This method returns true if - // the date is a leap day, or false if not. - // - - - public override bool IsLeapDay(int year, int month, int day, int era) - { - // 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), - String.Format( - CultureInfo.CurrentCulture, - SR.ArgumentOutOfRange_Day, - daysInMonth, - month)); - } - return (IsLeapYear(year, era) && month == 12 && day == 30); - } - - // Returns the leap month in a calendar year of the specified era. This method returns 0 - // if this calendar does not have leap month, or this year is not a leap year. - // - - - public override int GetLeapMonth(int year, int era) - { - CheckYearRange(year, era); - return (0); - } - - // Checks whether a given month in the specified era is a leap month. This method returns true if - // month is a leap month, or false if not. - // - - - public override bool IsLeapMonth(int year, int month, int era) - { - CheckYearMonthRange(year, month, era); - return (false); - } - - // Checks whether a given year in the specified era is a leap year. This method returns true if - // year is a leap year, or false if not. - // - - public override bool IsLeapYear(int year, int era) - { - CheckYearRange(year, era); - - if (year == MaxCalendarYear) - { - return false; - } - - return (GetAbsoluteDatePersian(year + 1, 1, 1) - GetAbsoluteDatePersian(year, 1, 1)) == 366; - } - - // Returns the date and time converted to a DateTime value. Throws an exception if the n-tuple is invalid. - // - - - public override DateTime ToDateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int era) - { - // The year/month/era checking is done in GetDaysInMonth(). - int daysInMonth = GetDaysInMonth(year, month, era); - if (day < 1 || day > daysInMonth) - { - // BCLDebug.Log("year = " + year + ", month = " + month + ", day = " + day); - throw new ArgumentOutOfRangeException( - nameof(day), - String.Format( - CultureInfo.CurrentCulture, - SR.ArgumentOutOfRange_Day, - daysInMonth, - month)); - } - - long lDate = GetAbsoluteDatePersian(year, month, day); - - if (lDate >= 0) - { - return (new DateTime(lDate * GregorianCalendar.TicksPerDay + TimeToTicks(hour, minute, second, millisecond))); - } - else - { - throw new ArgumentOutOfRangeException(null, SR.ArgumentOutOfRange_BadYearMonthDay); - } - } - - private const int DEFAULT_TWO_DIGIT_YEAR_MAX = 1410; - - public override int TwoDigitYearMax - { - get - { - if (twoDigitYearMax == -1) - { - twoDigitYearMax = GetSystemTwoDigitYearSetting(ID, DEFAULT_TWO_DIGIT_YEAR_MAX); - } - return (twoDigitYearMax); - } - - set - { - VerifyWritable(); - if (value < 99 || value > MaxCalendarYear) - { - throw new ArgumentOutOfRangeException( - nameof(value), - String.Format( - CultureInfo.CurrentCulture, - SR.ArgumentOutOfRange_Range, - 99, - MaxCalendarYear)); - } - twoDigitYearMax = value; - } - } - - - - public override int ToFourDigitYear(int year) - { - if (year < 0) - { - throw new ArgumentOutOfRangeException(nameof(year), - SR.ArgumentOutOfRange_NeedNonNegNum); - } - Contract.EndContractBlock(); - - if (year < 100) - { - return (base.ToFourDigitYear(year)); - } - - if (year > MaxCalendarYear) - { - throw new ArgumentOutOfRangeException( - nameof(year), - String.Format( - CultureInfo.CurrentCulture, - SR.ArgumentOutOfRange_Range, - 1, - MaxCalendarYear)); - } - return (year); - } - } -} |