internal virtual int GetDatePart(long ticks, int part)
{
HebrewCalendar.CheckTicksRange(ticks);
DateTime dateTime = new DateTime(ticks);
int year = dateTime.Year;
int month = dateTime.Month;
int day = dateTime.Day;
HebrewCalendar.__DateBuffer lunarDate = new HebrewCalendar.__DateBuffer();
lunarDate.year = year + 3760;
int index1 = HebrewCalendar.GetLunarMonthDay(year, lunarDate);
HebrewCalendar.__DateBuffer result = new HebrewCalendar.__DateBuffer();
result.year = lunarDate.year;
result.month = lunarDate.month;
result.day = lunarDate.day;
long absoluteDate = GregorianCalendar.GetAbsoluteDate(year, month, day);
if (month == 1 && day == 1)
{
return(HebrewCalendar.GetResult(result, part));
}
long num1 = absoluteDate - GregorianCalendar.GetAbsoluteDate(year, 1, 1);
if (num1 + (long)lunarDate.day <= (long)HebrewCalendar.LunarMonthLen[index1, lunarDate.month])
{
result.day += (int)num1;
return(HebrewCalendar.GetResult(result, part));
}
++result.month;
result.day = 1;
long num2 = num1 - (long)(HebrewCalendar.LunarMonthLen[index1, lunarDate.month] - lunarDate.day);
if (num2 > 1L)
{
while (num2 > (long)HebrewCalendar.LunarMonthLen[index1, result.month])
{
long num3 = num2;
int[,] numArray = HebrewCalendar.LunarMonthLen;
int index2 = index1;
HebrewCalendar.__DateBuffer dateBuffer = result;
int num4 = dateBuffer.month;
int num5 = num4 + 1;
dateBuffer.month = num5;
int index3 = num4;
long num6 = (long)numArray[index2, index3];
num2 = num3 - num6;
if (result.month > 13 || HebrewCalendar.LunarMonthLen[index1, result.month] == 0)
{
++result.year;
index1 = HebrewCalendar.HebrewTable[(year + 1 - 1583) * 2 + 1];
result.month = 1;
}
}
result.day += (int)(num2 - 1L);
}
return(HebrewCalendar.GetResult(result, part));
}
private static DateTime HebrewToGregorian(int hebrewYear, int hebrewMonth, int hebrewDay, int hour, int minute, int second, int millisecond)
{
int num = hebrewYear - 3760;
HebrewCalendar.__DateBuffer lunarDate = new HebrewCalendar.__DateBuffer();
int lunarMonthDay = HebrewCalendar.GetLunarMonthDay(num, lunarDate);
if (hebrewMonth == lunarDate.month && hebrewDay == lunarDate.day)
{
return(new DateTime(num, 1, 1, hour, minute, second, millisecond));
}
int dayDifference = HebrewCalendar.GetDayDifference(lunarMonthDay, hebrewMonth, hebrewDay, lunarDate.month, lunarDate.day);
return(new DateTime(new DateTime(num, 1, 1).Ticks + (long)dayDifference * 864000000000L + Calendar.TimeToTicks(hour, minute, second, millisecond)));
}
internal static int GetResult(HebrewCalendar.__DateBuffer result, int part)
{
switch (part)
{
case 0:
return(result.year);
case 2:
return(result.month);
case 3:
return(result.day);
default:
throw new InvalidOperationException(Environment.GetResourceString("InvalidOperation_DateTimeParsing"));
}
}
internal static int GetLunarMonthDay(int gregorianYear, HebrewCalendar.__DateBuffer lunarDate)
{
int num1 = gregorianYear - 1583;
if (num1 < 0 || num1 > 656)
{
throw new ArgumentOutOfRangeException("gregorianYear");
}
int index = num1 * 2;
lunarDate.day = HebrewCalendar.HebrewTable[index];
int num2 = HebrewCalendar.HebrewTable[index + 1];
switch (lunarDate.day)
{
case 0:
lunarDate.month = 5;
lunarDate.day = 1;
break;
case 30:
lunarDate.month = 3;
break;
case 31:
lunarDate.month = 5;
lunarDate.day = 2;
break;
case 32:
lunarDate.month = 5;
lunarDate.day = 3;
break;
case 33:
lunarDate.month = 3;
lunarDate.day = 29;
break;
default:
lunarDate.month = 4;
break;
}
return(num2);
}
