internal static WeekDate ToWeekDate(CalendarDate calendarDate, WeekDatePrecision precision)
{
if (calendarDate.Precision != CalendarDatePrecision.Day)
{
throw new ConversionException("The calendar date must be defined to the day to be converted to an week date.");
}
long year = calendarDate.Year;
int week = ISO8601Calculator.WeekOfYear(calendarDate);
var isLastWeekOfPreviousYear = week < 1;
var isFirstWeekOfNextYear = week > ISO8601Calculator.WeeksInYear(year);
if (isLastWeekOfPreviousYear)
{
year--;
week = ISO8601Calculator.WeeksInYear(year);
}
else if (isFirstWeekOfNextYear)
{
year++;
week = 1;
}
if (precision == WeekDatePrecision.Week)
{
return new WeekDate(year, week);
}
var day = (int)ISO8601Calculator.DayOfWeek(calendarDate);
return new WeekDate(year, week, day);
}
public WeekDate(long year, int week, int day)
: this(year, week)
{
if (day < 1 || day > 7)
{
throw new ArgumentOutOfRangeException("day", "The day must be a value from 1 to 7.");
}
_day = day;
_precision = WeekDatePrecision.Day;
}
public WeekDate(long year, int week)
{
int weeksInYear = ISO8601Calculator.WeeksInYear(year);
if (week < 1 || week > weeksInYear)
{
throw new ArgumentOutOfRangeException("week", string.Format("The week must be a value from 1 to {0}.", weeksInYear));
}
_year = year;
_week = week;
_precision = WeekDatePrecision.Week;
}
internal static WeekDate ToWeekDate(OrdinalDate ordinalDate, WeekDatePrecision precision)
{
return ordinalDate.ToCalendarDate(CalendarDatePrecision.Day).ToWeekDate(precision);
}
public WeekDate ToWeekDate(WeekDatePrecision precision)
{
return CalendarDateConverter.ToWeekDate(this, precision);
}
public WeekDate ToWeekDate(WeekDatePrecision precision)
{
return OrdinalDateConverter.ToWeekDate(this, precision);
}
