Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Globalization / TaiwanCalendar.cs / 1305376 / TaiwanCalendar.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== namespace System.Globalization { using System; using System.Diagnostics.Contracts; /* */ [System.Runtime.InteropServices.ComVisible(true)] [Serializable] 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. static internal EraInfo[] ----EraInfo = InitEraInfo(); static EraInfo[] InitEraInfo() { EraInfo[] eraRanges = new EraInfo[1]; eraRanges[0] = new EraInfo( 1, 1912, 1, 1, 1911, 1, GregorianCalendar.MaxYear - 1911); // era #, start year/month/day, yearOffset, minEraYear return eraRanges; } internal static 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. // [System.Runtime.InteropServices.ComVisible(false)] public override CalendarAlgorithmType AlgorithmType { get { return CalendarAlgorithmType.SolarCalendar; } } public TaiwanCalendar() { try { new CultureInfo("zh-TW"); } catch (ArgumentException e) { throw new TypeInitializationException(this.GetType().FullName, e); } helper = new GregorianCalendarHelper(this, ----EraInfo); } internal override int ID { get { return (CAL_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)); } [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, Environment.GetResourceString("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", Environment.GetResourceString("ArgumentOutOfRange_NeedPosNum")); } Contract.EndContractBlock(); if (year > helper.MaxYear) { throw new ArgumentOutOfRangeException( "year", String.Format( CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Range"), 1, helper.MaxYear)); } return (year); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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