public static double setMonth(object thisObj, double dmonth,
object date)
{
SemanticAnalyser.assert_type(thisObj, typeof(DateObject));
DateObject dt = (DateObject)thisObj;
double t = DateConstructor.LocalTime(dt.ms);
double new_date;
if (date == null)
{
new_date = DateConstructor.DateFromTime(t);
}
else
{
new_date = Convert.ToNumber(date);
}
double day = DateConstructor.MakeDay((double)DateConstructor.YearFromTime(t),
dmonth, new_date);
double new_val = DateConstructor.ToUTC(DateConstructor.MakeDate(day, t % DateConstructor.MS_PER_DAY));
dt.ms = DateConstructor.TimeClip(new_val);
return(dt.ms);
}
public static double setUTCDate(object thisObj, double ddate)
{
SemanticAnalyser.assert_type(thisObj, typeof(DateObject));
DateObject date = (DateObject)thisObj;
double t = date.ms;
double day = DateConstructor.MakeDay((double)DateConstructor.YearFromTime(t),
(double)DateConstructor.MonthFromTime(t), ddate);
double new_val = DateConstructor.MakeDate(day, t % DateConstructor.MS_PER_DAY);
date.ms = DateConstructor.TimeClip(new_val);
return(date.ms);
}
public static double setUTCFullYear(object thisObj, double dyear,
object month, object date)
{
SemanticAnalyser.assert_type(thisObj, typeof(DateObject));
DateObject dt = (DateObject)thisObj;
double t = dt.ms;
if (Double.IsNaN(t))
{
t = 0;
}
double new_month;
if (month == null)
{
new_month = DateConstructor.MonthFromTime(t);
}
else
{
new_month = Convert.ToNumber(month);
}
double new_date;
if (date == null)
{
new_date = DateConstructor.DateFromTime(t);
}
else
{
new_date = Convert.ToNumber(date);
}
double day = DateConstructor.MakeDay(dyear, new_month, new_date);
double new_val = DateConstructor.MakeDate(day, t % DateConstructor.MS_PER_DAY);
dt.ms = DateConstructor.TimeClip(new_val);
return(dt.ms);
}
