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Diffstat (limited to 'src/mscorlib/corefx/System/Globalization/TaiwanCalendar.cs')
-rw-r--r-- | src/mscorlib/corefx/System/Globalization/TaiwanCalendar.cs | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/src/mscorlib/corefx/System/Globalization/TaiwanCalendar.cs b/src/mscorlib/corefx/System/Globalization/TaiwanCalendar.cs new file mode 100644 index 0000000000..89b2e4a41d --- /dev/null +++ b/src/mscorlib/corefx/System/Globalization/TaiwanCalendar.cs @@ -0,0 +1,282 @@ +// 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; +using System.Diagnostics.CodeAnalysis; +using System.Diagnostics.Contracts; + +namespace System.Globalization +{ + /*=================================TaiwanCalendar========================== + ** + ** Taiwan calendar is based on the Gregorian calendar. And the year is an offset to Gregorian calendar. + ** That is, + ** Taiwan year = Gregorian year - 1911. So 1912/01/01 A.D. is Taiwan 1/01/01 + ** + ** Calendar support range: + ** Calendar Minimum Maximum + ** ========== ========== ========== + ** Gregorian 1912/01/01 9999/12/31 + ** Taiwan 01/01/01 8088/12/31 + ============================================================================*/ + + [Serializable] + [System.Runtime.InteropServices.ComVisible(true)] + public class TaiwanCalendar : Calendar + { + // + // The era value for the current era. + // + + // Since + // Gregorian Year = Era Year + yearOffset + // When Gregorian Year 1912 is year 1, so that + // 1912 = 1 + yearOffset + // So yearOffset = 1911 + //m_EraInfo[0] = new EraInfo(1, new DateTime(1912, 1, 1).Ticks, 1911, 1, GregorianCalendar.MaxYear - 1911); + + // Initialize our era info. + internal static EraInfo[] taiwanEraInfo = new EraInfo[] { + new EraInfo( 1, 1912, 1, 1, 1911, 1, GregorianCalendar.MaxYear - 1911) // era #, start year/month/day, yearOffset, minEraYear + }; + + internal static volatile Calendar s_defaultInstance; + + internal GregorianCalendarHelper helper; + + /*=================================GetDefaultInstance========================== + **Action: Internal method to provide a default intance of TaiwanCalendar. Used by NLS+ implementation + ** and other calendars. + **Returns: + **Arguments: + **Exceptions: + ============================================================================*/ + + internal static Calendar GetDefaultInstance() + { + if (s_defaultInstance == null) + { + s_defaultInstance = new TaiwanCalendar(); + } + return (s_defaultInstance); + } + + internal static readonly DateTime calendarMinValue = new DateTime(1912, 1, 1); + + + [System.Runtime.InteropServices.ComVisible(false)] + public override DateTime MinSupportedDateTime + { + get + { + return (calendarMinValue); + } + } + + [System.Runtime.InteropServices.ComVisible(false)] + public override DateTime MaxSupportedDateTime + { + get + { + return (DateTime.MaxValue); + } + } + + // Return the type of the Taiwan calendar. + // + + public TaiwanCalendar() + { + try + { + new CultureInfo("zh-TW"); + } + catch (ArgumentException e) + { + throw new TypeInitializationException(this.GetType().ToString(), e); + } + helper = new GregorianCalendarHelper(this, taiwanEraInfo); + } + + internal override CalendarId ID + { + get + { + return CalendarId.TAIWAN; + } + } + + + public override DateTime AddMonths(DateTime time, int months) + { + return (helper.AddMonths(time, months)); + } + + + public override DateTime AddYears(DateTime time, int years) + { + return (helper.AddYears(time, years)); + } + + + public override int GetDaysInMonth(int year, int month, int era) + { + return (helper.GetDaysInMonth(year, month, era)); + } + + + public override int GetDaysInYear(int year, int era) + { + return (helper.GetDaysInYear(year, era)); + } + + + public override int GetDayOfMonth(DateTime time) + { + return (helper.GetDayOfMonth(time)); + } + + + public override DayOfWeek GetDayOfWeek(DateTime time) + { + return (helper.GetDayOfWeek(time)); + } + + + public override int GetDayOfYear(DateTime time) + { + return (helper.GetDayOfYear(time)); + } + + + public override int GetMonthsInYear(int year, int era) + { + return (helper.GetMonthsInYear(year, era)); + } + + + [SuppressMessage("Microsoft.Contracts", "CC1055")] // Skip extra error checking to avoid *potential* AppCompat problems. + [System.Runtime.InteropServices.ComVisible(false)] + public override int GetWeekOfYear(DateTime time, CalendarWeekRule rule, DayOfWeek firstDayOfWeek) + { + return (helper.GetWeekOfYear(time, rule, firstDayOfWeek)); + } + + + public override int GetEra(DateTime time) + { + return (helper.GetEra(time)); + } + + public override int GetMonth(DateTime time) + { + return (helper.GetMonth(time)); + } + + + public override int GetYear(DateTime time) + { + return (helper.GetYear(time)); + } + + + public override bool IsLeapDay(int year, int month, int day, int era) + { + return (helper.IsLeapDay(year, month, day, era)); + } + + + public override bool IsLeapYear(int year, int era) + { + return (helper.IsLeapYear(year, era)); + } + + // 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. + // + + [System.Runtime.InteropServices.ComVisible(false)] + public override int GetLeapMonth(int year, int era) + { + return (helper.GetLeapMonth(year, era)); + } + + + public override bool IsLeapMonth(int year, int month, int era) + { + return (helper.IsLeapMonth(year, month, era)); + } + + + public override DateTime ToDateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int era) + { + return (helper.ToDateTime(year, month, day, hour, minute, second, millisecond, era)); + } + + + public override int[] Eras + { + get + { + return (helper.Eras); + } + } + + private const int DEFAULT_TWO_DIGIT_YEAR_MAX = 99; + + public override int TwoDigitYearMax + { + get + { + if (twoDigitYearMax == -1) + { + twoDigitYearMax = GetSystemTwoDigitYearSetting(ID, DEFAULT_TWO_DIGIT_YEAR_MAX); + } + return (twoDigitYearMax); + } + + set + { + VerifyWritable(); + if (value < 99 || value > helper.MaxYear) + { + throw new ArgumentOutOfRangeException( + "year", + String.Format( + CultureInfo.CurrentCulture, + SR.ArgumentOutOfRange_Range, + 99, + helper.MaxYear)); + } + twoDigitYearMax = value; + } + } + + // For Taiwan calendar, four digit year is not used. + // Therefore, for any two digit number, we just return the original number. + + public override int ToFourDigitYear(int year) + { + if (year <= 0) + { + throw new ArgumentOutOfRangeException("year", + SR.ArgumentOutOfRange_NeedPosNum); + } + Contract.EndContractBlock(); + + if (year > helper.MaxYear) + { + throw new ArgumentOutOfRangeException( + "year", + String.Format( + CultureInfo.CurrentCulture, + SR.ArgumentOutOfRange_Range, + 1, + helper.MaxYear)); + } + return (year); + } + } +} + |