public override IEnumerable <DateTime?> Adjust(DateTimeFormula Offset, DateTime MinDate, DateTime MaxDate, DateTime StartDate)
{
//AFter = Min, Max, Current
//Before = Max, Min, Current
var Query =
from x in Position.Occurances(MinDate, MaxDate, StartDate)
let NewMin = (Location == TimeAdjustmentLocation.After ? MinDate : MaxDate)
let NewMax = (Location == TimeAdjustmentLocation.After ? MaxDate : MinDate)
let Adjusted = Offset.Occurances(NewMin, NewMax, x.Value).FirstOrDefault()
where Adjusted != null
select Adjusted
;
return(Query);
}
public static T Offset <T>(this T DateFinder, TimeAdjustmentLocation Location, DateTimeFormula Position) where T : IContainsAdjustments
{
var Adjuster = new PositionalDateTimeAdjuster();
Adjuster.Location = Location;
Adjuster.Position = Position;
DateFinder.Adjustments.Add(Adjuster);
return(DateFinder);
}
public static T After <T>(this T DateFinder, DateTimeFormula Position) where T : IContainsAdjustments
{
return(DateFinder.Offset(TimeAdjustmentLocation.After, Position));
}
public abstract IEnumerable <DateTime?> Adjust(DateTimeFormula Source, DateTime MinDate, DateTime MaxDate, DateTime StartDate);