internal Interval(
ILowerBound <TPoint> lowerBound,
IUpperBound <TPoint> upperBound)
{
this.LowerBound = lowerBound;
this.UpperBound = upperBound;
}
public static IInterval <TPoint> Build <TPoint>(
ILowerBound <TPoint> lowerBound,
IUpperBound <TPoint> upperBound,
IComparer <TPoint> comparer)
where TPoint : notnull => (lowerBound, upperBound) switch
{
(ILowerPointedBound <TPoint> lpb, IUpperPointedBound <TPoint> upb) =>
BuildPointedInterval(lpb, upb, comparer),
_ => new Interval <TPoint>(lowerBound, upperBound)
};
public int Compare(
IUpperBound <TPoint> left,
IUpperBound <TPoint> right)
{
switch (left)
{
case InfinityUpperBound <TPoint> _ when right is InfinityUpperBound <TPoint> :
return(0);
case IUpperPointedBound <TPoint> _ when right is InfinityUpperBound <TPoint> :
return(-1);
case InfinityUpperBound <TPoint> _ when right is IUpperPointedBound <TPoint> :
return(1);
}
var leftPointedBorder = (IUpperPointedBound <TPoint>)left;
var rightPointedBorder = (IUpperPointedBound <TPoint>)right;
var resultOfComparisonsPointedBorders = this.comparer
.Compare(
x: leftPointedBorder.Point,
y: rightPointedBorder.Point);
if (resultOfComparisonsPointedBorders != 0)
{
return(resultOfComparisonsPointedBorders);
}
switch (left)
{
case OpenUpperBound <TPoint> _ when right is OpenUpperBound <TPoint> :
case ClosedUpperBound <TPoint> _ when right is ClosedUpperBound <TPoint> :
return(0);
case ClosedUpperBound <TPoint> _ when right is OpenUpperBound <TPoint> :
return(1);
case OpenUpperBound <TPoint> _ when right is ClosedUpperBound <TPoint> :
return(-1);
}
throw new AggregateException(string.Empty);
}