Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Globalization / ThaiBuddhistCalendar.cs / 1 / ThaiBuddhistCalendar.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== namespace System.Globalization { using System; /*=================================ThaiBuddhistCalendar========================== ** ** ThaiBuddhistCalendar is based on Gregorian calendar. Its year value has ** an offset to the Gregorain calendar. ** ** Calendar support range: ** Calendar Minimum Maximum ** ========== ========== ========== ** Gregorian 0001/01/01 9999/12/31 ** Thai 0544/01/01 10542/12/31 ============================================================================*/ [System.Runtime.InteropServices.ComVisible(true)] [Serializable] public class ThaiBuddhistCalendar: Calendar { static internal EraInfo[] m_EraInfo; // // The era value for the current era. // public const int ThaiBuddhistEra = 1; //internal static Calendar m_defaultInstance; internal GregorianCalendarHelper helper; [System.Runtime.InteropServices.ComVisible(false)] public override DateTime MinSupportedDateTime { get { return (DateTime.MinValue); } } [System.Runtime.InteropServices.ComVisible(false)] public override DateTime MaxSupportedDateTime { get { return (DateTime.MaxValue); } } // Return the type of the Thai Buddhist calendar. // [System.Runtime.InteropServices.ComVisible(false)] public override CalendarAlgorithmType AlgorithmType { get { return CalendarAlgorithmType.SolarCalendar; } } /*=================================GetDefaultInstance========================== **Action: Internal method to provide a default intance of ThaiBuddhistCalendar. Used by NLS+ implementation ** and other calendars. **Returns: **Arguments: **Exceptions: ============================================================================*/ /* internal static Calendar GetDefaultInstance() { if (m_defaultInstance == null) { m_defaultInstance = new ThaiBuddhistCalendar(); } return (m_defaultInstance); } */ static ThaiBuddhistCalendar() { // Since // Gregorian Year = Era Year + yearOffset // When Gregorian Year 1 is Thai Buddhist year 544, so that // 1 = 544 + yearOffset // So yearOffset = -543 // Gregorian Year 2001 is Thai Buddhist Year 2544. //m_EraInfo[0] = new EraInfo(1, new DateTime(1, 1, 1).Ticks, -543, 544, GregorianCalendar.MaxYear + 543); m_EraInfo = GregorianCalendarHelper.InitEraInfo(Calendar.CAL_THAI); } public ThaiBuddhistCalendar() { helper = new GregorianCalendarHelper(this, m_EraInfo); } internal override int ID { get { return (CAL_THAI); } } 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 = 2572; 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; } } public override int ToFourDigitYear(int year) { return (helper.ToFourDigitYear(year, this.TwoDigitYearMax)); } } }
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