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// 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.
namespace System.Globalization {
using System;
using System.Diagnostics.CodeAnalysis;
using System.Diagnostics.Contracts;
/*=================================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
============================================================================*/
[Serializable] public class ThaiBuddhistCalendar: Calendar {
// Initialize our era info.
static internal EraInfo[] thaiBuddhistEraInfo = new EraInfo[] {
new EraInfo( 1, 1, 1, 1, -543, 544, GregorianCalendar.MaxYear + 543) // era #, start year/month/day, yearOffset, minEraYear
};
//
// The era value for the current era.
//
public const int ThaiBuddhistEra = 1;
//internal static Calendar m_defaultInstance;
internal GregorianCalendarHelper helper;
public override DateTime MinSupportedDateTime
{
get
{
return (DateTime.MinValue);
}
}
public override DateTime MaxSupportedDateTime
{
get
{
return (DateTime.MaxValue);
}
}
// Return the type of the Thai Buddhist calendar.
//
public override CalendarAlgorithmType AlgorithmType
{
get
{
return CalendarAlgorithmType.SolarCalendar;
}
}
public ThaiBuddhistCalendar() {
helper = new GregorianCalendarHelper(this, thaiBuddhistEraInfo);
}
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));
}
[SuppressMessage("Microsoft.Contracts", "CC1055")] // Skip extra error checking to avoid *potential* AppCompat problems.
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.
//
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) {
if (year < 0) {
throw new ArgumentOutOfRangeException(nameof(year),
Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum"));
}
Contract.EndContractBlock();
return (helper.ToFourDigitYear(year, this.TwoDigitYearMax));
}
}
}
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