public static ReadOnlyCollection <IImmutableHierarchy> Family(this IImmutableHierarchy node)
{
if (node == null)
{
return(Seq.Empty <IImmutableHierarchy>().ToReadOnly());
}
return(node.Concat(node.ChildrenRecursive()).ToReadOnly());
}
public static ReadOnlyCollection <IImmutableHierarchy> ChildrenRecursive(this IImmutableHierarchy node)
{
if (node == null)
{
return(Seq.Empty <IImmutableHierarchy>().ToReadOnly());
}
return(node.Children.Flatten(n => n == null ? Seq.Empty <IImmutableHierarchy>() : n.Children).ToReadOnly());
}
public static ReadOnlyCollection <IImmutableHierarchy> Hierarchy(this IImmutableHierarchy node)
{
if (node == null)
{
return(Seq.Empty <IImmutableHierarchy>().ToReadOnly());
}
return(node.Unfoldi(n => n.Parent, n => n != null).ToReadOnly());
}
public static ReadOnlyCollection <T> Family <T>(this IImmutableHierarchy <T> node)
where T : class, IImmutableHierarchy <T>
{
return(((IImmutableHierarchy)node).Family().AssertCast <T>().ToReadOnly());
}
public static ReadOnlyCollection <T> ChildrenRecursive <T>(this IImmutableHierarchy <T> node)
where T : class, IImmutableHierarchy <T>
{
return(((IImmutableHierarchy)node).ChildrenRecursive().AssertCast <T>().ToReadOnly());
}