public static Time Add(Time x, DesignatedDuration y)
{
if (y.Years != null)
{
throw new InvalidOperationException("The Years component of the DesignatedDuration cannot be added to a Time.");
}
if (y.Months != null)
{
throw new InvalidOperationException("The Months component of the DesignatedDuration cannot be added to a Time.");
}
if (y.Days != null)
{
throw new InvalidOperationException("The Days component of the DesignatedDuration cannot be added to a Time.");
}
var second = x.Second;
var minute = x.Minute;
var hour = x.Hour;
var precision = x.Precision;
if (y.Seconds != null)
{
second += y.Seconds.Value;
if (hour != (int)hour)
{
minute += (hour - (int)hour) * 60;
}
if (minute != (int)minute)
{
second += (minute - (int)minute) * 60;
}
while (second > 59)
{
second -= 60;
minute++;
}
if (precision < TimePrecision.Second)
{
precision = TimePrecision.Second;
}
}
if (y.Minutes != null)
{
precision = TimePrecision.Minute;
minute += y.Minutes.Value;
if (hour != (int)hour)
{
minute += (hour - (int)hour) * 60;
}
while (minute > 59)
{
minute -= 60;
hour++;
}
if (precision < TimePrecision.Minute)
{
precision = TimePrecision.Minute;
}
}
if (y.Hours != null)
{
hour += y.Hours.Value;
}
switch (precision)
{
case TimePrecision.Hour:
return new Time(hour);
case TimePrecision.Minute:
return new Time((int)hour, minute);
case TimePrecision.Second:
return new Time((int)hour, (int)minute, second);
default:
return null;
}
}
public static CalendarDate Add(CalendarDate x, DesignatedDuration y)
{
if (y.Hours != null)
{
throw new InvalidOperationException("The Hours component of a DesignatedDuration cannot be added to a CalendarDate.");
}
if (y.Minutes != null)
{
throw new InvalidOperationException("The Minutes component of a DesignatedDuration cannot be added to a CalendarDate.");
}
if (y.Seconds != null)
{
throw new InvalidOperationException("The Seconds component of a DesignatedDuration cannot be added to a CalendarDate.");
}
double day = x.Day;
double month = x.Month;
double year = x.Year;
long century = x.Century;
var precision = x.Precision;
if (y.Years != null)
{
century += (long)y.Years.Value / 100;
year += y.Years.Value;
}
if (y.Months != null)
{
month += (int)y.Months.Value;
if (year != (int)year)
{
month += (year - (int)year) * 60;
}
if (precision < CalendarDatePrecision.Month)
{
precision = CalendarDatePrecision.Month;
}
}
else if (precision == CalendarDatePrecision.Year && year != (int)year)
{
throw new InvalidOperationException("The Year value of a CalendarDate cannot be fractional.");
}
if (y.Days != null)
{
day += y.Days.Value;
if (month != (int)month)
{
day += (month - (int)month) * 60;
}
if (y.Days != (int)y.Days)
{
throw new InvalidOperationException("The Day value of a CalendarDate cannot be fractional.");
}
if (precision < CalendarDatePrecision.Day)
{
precision = CalendarDatePrecision.Day;
}
}
else if (precision == CalendarDatePrecision.Month && month != (int)month)
{
throw new InvalidOperationException("The Month value of a CalendarDate cannot be fractional.");
}
while ((int)month > 12)
{
month -= 12;
year++;
}
int daysInMonth = DaysInMonth((long)year, (int)month);
while (day > daysInMonth)
{
day -= daysInMonth;
month++;
daysInMonth = DaysInMonth((long)year, (int)month);
}
switch (precision)
{
case CalendarDatePrecision.Century:
return CalendarDate.FromCentury(century);
case CalendarDatePrecision.Year:
return new CalendarDate((int)year);
case CalendarDatePrecision.Month:
return new CalendarDate((long)year, (int)month);
case CalendarDatePrecision.Day:
return new CalendarDate((long)year, (int)month, (int)day);
default:
return null;
}
}
public static CalendarDateTime Add(CalendarDateTime x, DesignatedDuration y)
{
double day = x.Day;
double month = x.Month;
double year = x.Year;
var second = x.Second;
var minute = x.Minute;
var hour = x.Hour;
var precision = x.Precision;
if (y.Years != null)
{
year += y.Years.Value;
}
if (y.Months != null)
{
month += y.Months.Value;
if (year != (int)year)
{
month += (year - (int)year) * 60;
}
}
if (y.Days != null)
{
day += y.Days.Value;
if (month != (int)month)
{
day += (month - (int)month) * 60;
}
}
if (y.Hours != null)
{
hour += y.Hours.Value;
if (day != (int)day)
{
hour += (day - (int)day) * 24;
}
}
if (y.Minutes != null)
{
minute += y.Minutes.Value;
if (hour != (int)hour)
{
minute += (hour - (int)hour) * 60;
}
if (precision < TimePrecision.Minute)
{
precision = TimePrecision.Minute;
}
}
if (y.Seconds != null)
{
second += y.Seconds.Value;
if (minute != (int)minute)
{
second += (minute - (int)minute) * 60;
}
if (precision < TimePrecision.Second)
{
precision = TimePrecision.Second;
}
}
while (!(second < 60))
{
second -= 60;
minute++;
}
while ((int)minute > 59 || (precision == TimePrecision.Minute && !(minute < 60d)))
{
minute -= 60;
hour++;
}
while ((int)hour > 23 || (precision == TimePrecision.Hour && hour >= 24d))
{
hour -= 24;
day++;
}
while ((int)month > 12)
{
month -= 12;
year++;
}
int daysInMonth = DaysInMonth((long)year, (int)month);
while (day > daysInMonth)
{
day -= daysInMonth;
month++;
daysInMonth = DaysInMonth((long)year, (int)month);
}
switch (precision)
{
case TimePrecision.Hour:
return new CalendarDateTime(new CalendarDate((long)year, (int)month, (int)day), new Time(hour));
case TimePrecision.Minute:
return new CalendarDateTime(new CalendarDate((long)year, (int)month, (int)day), new Time((int)hour, minute));
case TimePrecision.Second:
return new CalendarDateTime(new CalendarDate((long)year, (int)month, (int)day), new Time((int)hour, (int)minute, second));
default:
return null;
}
}
public static Time Subtract(Time x, DesignatedDuration y)
{
if (y.Years != null)
{
throw new InvalidOperationException("The Years component of the DesignatedDuration cannot be subtracted from a Time");
}
if (y.Months != null)
{
throw new InvalidOperationException("The Months component of the DesignatedDuration cannot be subtracted from a Time");
}
if (y.Days != null)
{
throw new InvalidOperationException("The Days component of the DesignatedDuration cannot be subtracted from a Time");
}
var hour = x.Hour;
var minute = x.Minute;
var second = x.Second;
var precision = x.Precision;
if (y.Seconds != null)
{
second -= y.Seconds.Value;
if (precision < TimePrecision.Second)
{
precision = TimePrecision.Second;
}
}
if (y.Minutes != null)
{
if (y.Minutes != (int)y.Minutes && precision > TimePrecision.Minute)
{
second -= (y.Minutes.Value - (int)y.Minutes.Value) * 60d;
minute -= (int)y.Minutes.Value;
}
else
{
minute -= y.Minutes.Value;
}
if (precision < TimePrecision.Minute)
{
precision = TimePrecision.Minute;
}
}
if (y.Hours != null)
{
if (y.Hours != (int)y.Hours && precision > TimePrecision.Hour)
{
minute -= (y.Hours.Value - (int)y.Hours.Value) * 60d;
hour -= (int)y.Hours.Value;
}
else
{
hour -= y.Hours.Value;
}
}
while (second < -59d)
{
second += 60d;
minute--;
}
while (minute < -59d)
{
minute += 60d;
hour--;
}
if (hour < 0d)
{
throw new InvalidOperationException("The resulting Time is is in the previous day.");
}
switch (precision)
{
case TimePrecision.Hour:
return new Time(hour);
case TimePrecision.Minute:
return new Time((int)hour, minute);
case TimePrecision.Second:
return new Time((int)hour, (int)minute, second);
default:
return null;
}
}
public static CalendarDate Subtract(CalendarDate x, DesignatedDuration y)
{
long century = x.Century;
long year = x.Year;
double month = x.Month;
double day = x.Day;
CalendarDatePrecision precision = x.Precision;
if (y.Seconds != null)
{
day += y.Seconds.Value / SecondsPerDay;
}
if (y.Minutes != null)
{
day += y.Minutes.Value / MinutesPerDay;
}
if (y.Hours != null)
{
day += y.Hours.Value / HoursPerDay;
}
if (y.Days != null)
{
day -= y.Days.Value;
if (precision < CalendarDatePrecision.Day)
{
precision = CalendarDatePrecision.Day;
}
}
if (y.Months != null)
{
month -= y.Months.Value;
if (precision < CalendarDatePrecision.Month)
{
precision = CalendarDatePrecision.Month;
}
}
if (y.Years != null)
{
if (y.Years != (int)y.Years)
{
month += (y.Years.Value - (int)y.Years.Value) * MonthsPerYear;
}
year -= (long)y.Years.Value;
if (precision < CalendarDatePrecision.Year)
{
precision = CalendarDatePrecision.Year;
}
}
while (month < 1)
{
month += MonthsPerYear;
year--;
}
if (month != (int)month && precision > CalendarDatePrecision.Month)
{
day -= (month - (int)month) * DaysInMonth(year, (int)month);
month = (int)month;
}
while (day < 1)
{
day += DaysInMonth(year, (int)month);
month--;
}
if (day != (int)day)
{
throw new InvalidOperationException("A CalendarDate cannot have a fractional day.");
}
if (month != (int)month)
{
throw new InvalidOperationException("A CalendarDate cannot have a fractional month.");
}
switch (precision)
{
case CalendarDatePrecision.Century:
return CalendarDate.FromCentury(century);
case CalendarDatePrecision.Year:
return new CalendarDate(year);
case CalendarDatePrecision.Month:
return new CalendarDate(year, (int)month);
case CalendarDatePrecision.Day:
return new CalendarDate(year, (int)month, (int)day);
default:
return null;
}
}
public static CalendarDateTime Subtract(CalendarDateTime x, DesignatedDuration y)
{
long year = x.Year;
double month = x.Month;
double day = x.Day;
double hour = x.Hour;
double minute = x.Minute;
double second = x.Second;
TimePrecision precision = x.Precision;
if (y.Years != null)
{
year -= (long)y.Years.Value;
if (y.Years != (int)y.Years)
{
month += (y.Years.Value - (long)y.Years.Value) * MonthsPerYear;
}
}
if (y.Months != null)
{
month -= y.Months.Value;
if (month != (int)month)
{
day += (month - (int)month) * DaysInMonth(year, (int)month);
month = (int)month;
}
}
if (y.Days != null)
{
day -= (int)y.Days.Value;
if (day != (int)day)
{
hour += (day - (int)day) * HoursPerDay;
day = (int)day;
}
}
if (y.Hours != null)
{
hour -= y.Hours.Value;
if (hour != (int)hour && precision > TimePrecision.Hour)
{
minute += (hour - (int)hour) * MinutesPerHour;
hour = (int)hour;
}
}
if (y.Minutes != null)
{
minute -= y.Minutes.Value;
if (minute != (int)minute && precision > TimePrecision.Minute)
{
second += (minute - (int)minute) * SecondsPerMinute;
minute = (int)minute;
}
if (precision < TimePrecision.Minute)
{
precision = TimePrecision.Minute;
}
}
if (y.Seconds != null)
{
second -= y.Seconds.Value;
if (precision < TimePrecision.Second)
{
precision = TimePrecision.Second;
}
}
while (second <= -SecondsPerMinute)
{
second += SecondsPerMinute;
minute--;
}
while (minute <= -MinutesPerHour)
{
minute += MinutesPerHour;
hour--;
}
while (hour <= -HoursPerDay)
{
hour += HoursPerDay;
day--;
}
while (month < 1)
{
month += MonthsPerYear;
year--;
}
while (day < 1)
{
day += DaysInMonth(year, (int)month);
month--;
}
switch (precision)
{
case TimePrecision.Hour:
return new CalendarDateTime(new CalendarDate(year, (int)month, (int)day), new Time(hour));
case TimePrecision.Minute:
return new CalendarDateTime(new CalendarDate(year, (int)month, (int)day), new Time((int)hour, minute));
case TimePrecision.Second:
return new CalendarDateTime(new CalendarDate(year, (int)month, (int)day), new Time((int)hour, (int)minute, second));
default:
return null;
}
}