///<summary>Creates a Hebrew date from an English one.</summary>
///<param name="englishDate">The English date to convert.</param>
public HebrewDate(DateTime englishDate)
{
date = englishDate.Date;
hebrewYear = calendar.GetYear(date);
hebrewMonth = CalendarExtensions.ToHebrewMonth(hebrewYear, calendar.GetMonth(date));
hebrewDay = calendar.GetDayOfMonth(englishDate);
}
///<summary>Gets the length of a Hebrew month.</summary>
///<param name="month">The month.</param>
///<param name="hebrewYear">The year.</param>
///<returns>The number of days in the month.</returns>
public static int Length(this HebrewMonth month, int hebrewYear)
{
if (month == 0)
{
throw new ArgumentOutOfRangeException("month", "None is not a valid month.");
}
return(calendar.GetDaysInMonth(hebrewYear, month.Index(hebrewYear)));
}
///<summary>Gets the name of the given month in the given Hebrew year.</summary>
///<param name="month">The Hebrew month.</param>
///<param name="hebrewYear">The Hebrew year (for leap years).</param>
///<returns>The name of the month.</returns>
public static string ToString(this HebrewMonth month, int hebrewYear)
{
switch (month)
{
case 0: throw new ArgumentOutOfRangeException("month", "None is not a valid month.");
case HebrewMonth.אדר1: return(calendar.IsLeapYear(hebrewYear) ? "אדר א" : "אדר");
case HebrewMonth.אדר2: return(calendar.IsLeapYear(hebrewYear) ? "אדר ב" : "אדר");
default: return(month.ToString());
}
}
///<summary>Creates a Hebrew date.</summary>
///<param name="hebrewYear">The Hebrew year.</param>
///<param name="month">The Hebrew month.</param>
///<param name="day">The Hebrew day of the month.</param>
public HebrewDate(int hebrewYear, HebrewMonth month, int day)
{
if (month == 0)
{
throw new ArgumentOutOfRangeException("month", "None is not a valid month.");
}
this.hebrewYear = hebrewYear;
if (!calendar.IsLeapYear(hebrewYear) && month == HebrewMonth.אדר1)
{
month = HebrewMonth.אדר2;
}
hebrewMonth = month;
hebrewDay = day;
date = calendar.ToDateTime(hebrewYear, month.Index(hebrewYear), day, 0, 0, 0, 0);
}
///<summary>Creates a HebrewDayOfYear.</summary>
///<param name="month">The Hebrew month.</param>
///<param name="day">The Hebrew day.</param>
public HebrewDayOfYear(HebrewMonth month, int day)
: this()
{
if (month == HebrewMonth.None)
{
throw new ArgumentOutOfRangeException("month", "None is not a valid month");
}
if (day <= 0)
{
throw new ArgumentOutOfRangeException("day");
}
if (day > 30 || (day == 30 && (month == HebrewMonth.טבת || month == HebrewMonth.אדר2 || month == HebrewMonth.אייר || month == HebrewMonth.תמוז || month == HebrewMonth.אלול)))
{
throw new ArgumentOutOfRangeException("day");
}
Month = month;
Day = day;
}
///<summary>Creates a NonשבתEvent.</summary>
///<param name="month">The month that the event occurs on.</param>
///<param name="normalDay">The day of the month that this event normally occurs on.</param>
///<param name="fallback">The day of the week that this event occurs on instead of שבת.</param>
public NonשבתEvent(HebrewMonth month, int normalDay, DayOfWeek fallback)
: this()
{
if (month == HebrewMonth.None)
{
throw new ArgumentOutOfRangeException("month", "None is not a valid month");
}
if (normalDay <= 0 ||
normalDay > 30 ||
(normalDay == 30 && (month == HebrewMonth.טבת || month == HebrewMonth.אדר2 || month == HebrewMonth.אייר || month == HebrewMonth.תמוז || month == HebrewMonth.אלול)))
{
throw new ArgumentOutOfRangeException("normalDay");
}
if (fallback == DayOfWeek.Saturday)
{
throw new ArgumentOutOfRangeException("fallback", "Fallback cannot be שבת");
}
Month = month;
NormalDay = normalDay;
Fallback = fallback;
}
///<summary>Gets the index of a month in year.</summary>
///<param name="month">The name of the month.</param>
///<param name="hebrewYear">The year to check.</param>
///<returns>The month number within the year. (Can be given to .Net HebrewCalendars)</returns>
public static int Index(this HebrewMonth month, int hebrewYear)
{
return(Index(hebrewYear, (int)month));
}
///<summary>Creates a SpecialשבתEvent from a month and day.</summary>
///<param name="month">The month of the earliest date that this שבת can occur.</param>
///<param name="day">The date of the earliest date that this שבת can occur.</param>
public SpecialשבתEvent(HebrewMonth month, int day) : this(new HebrewDayOfYear(month, day))
{
}
private Holiday(string name, HebrewMonth month, int day, HolidayCategory category) : this(name, new HebrewDayOfYear(month, day), category)
{
}
