internal static CalendarDate ToCalendarDate(OrdinalDate ordinalDate, CalendarDatePrecision precision)
{
if (precision == CalendarDatePrecision.Century)
{
return new CalendarDate(ISO8601Calculator.CenturyOfYear(ordinalDate.Year));
}
if (precision == CalendarDatePrecision.Year)
{
return new CalendarDate(ordinalDate.Year);
}
var days = ISO8601Calculator.IsLeapYear(ordinalDate.Year) ? DaysToMonth366 : DaysToMonth365;
var month = 0;
var day = 0;
for (int i = days.Length - 1; i >= 0; i--)
{
if (ordinalDate.Day > days[i])
{
month = i + 1;
day = ordinalDate.Day - days[i];
break;
}
}
if (precision == CalendarDatePrecision.Month)
{
return new CalendarDate(ordinalDate.Year, month);
}
return new CalendarDate(ordinalDate.Year, month, day);
}
internal static CalendarDate ToCalendarDate(WeekDate weekDate, CalendarDatePrecision precision)
{
if (weekDate.Precision != WeekDatePrecision.Day)
{
throw new ConversionException("The week date must be defined to the day to be converted to a calendar date without information loss.");
}
return ToOrdinalDate(weekDate).ToCalendarDate(precision);
}
public CalendarDate(long year, int month)
: this(year)
{
if (month < 1 || month > 12)
{
throw new ArgumentOutOfRangeException("month", "The month must be a value from 1 to 12.");
}
_month = month;
_precision = CalendarDatePrecision.Month;
}
public CalendarDate(long year, int month, int day)
: this(year, month)
{
if (day < 1 || day > ISO8601Calculator.DaysInMonth(year, month))
{
throw new ArgumentOutOfRangeException("day", $"The day must be a value from 1 to {ISO8601Calculator.DaysInMonth(year, month)}.");
}
_day = day;
_precision = CalendarDatePrecision.Day;
}
public CalendarDate(long year)
{
_year = year;
_century = ISO8601Calculator.CenturyOfYear(year);
_precision = CalendarDatePrecision.Year;
}
public CalendarDate ToCalendarDate(CalendarDatePrecision precision)
{
return WeekDateConverter.ToCalendarDate(this, precision);
}