public WeakLinkedNode <T> CleanNext()
{
var next = Next;
Next = null;
return(next);
}
public void Remove(WeakLinkedNode <T> node)
{
EnsureClean();
WeakLinkedNode.RemoveNode(ref _head, ref _tail, node);
OnCollectionChanged();
EnsureGC();
}
public void Remove(T item)
{
EnsureClean();
WeakLinkedNode.Remove(ref _head, ref _tail, item);
OnCollectionChanged();
EnsureGC();
}
public void Cleanup(Func <T, bool> predicate)
{
if (_head == null)
{
return;
}
WeakLinkedNode.Clean(ref _head, out _tail, predicate);
OnCollectionChanged();
}
public WeakLinkedNode <T> Add(T item)
{
EnsureClean();
var node = WeakLinkedNode.Insert(ref _head, ref _tail, item);
OnCollectionChanged();
EnsureGC();
return(node);
}
private void EnsureClean()
{
if (_head == null || IsGCOccurred == false)
{
return;
}
WeakLinkedNode.Clean(ref _head, out _tail);
OnCollectionChanged();
UpdateGCCounter();
}
public void RemoveAfter()
{
var remove = Next;
if (remove != null)
{
Next = remove.Next;
remove.Next = null;
}
else
{
Next = null;
}
}
public void Clear()
{
if (_head == null)
{
return;
}
while (_head != null)
{
_head = _head.CleanNext();
}
_tail = null;
_head = null;
OnCollectionChanged();
UpdateGCCounter();
}
internal static WeakLinkedNode <T> CleanImpl(WeakLinkedNode <T> head, out WeakLinkedNode <T> tail, Func <T, bool> predicate = null)
{
var aliveHead = head;
while (aliveHead != null && (aliveHead.IsAlive == false || predicate != null && predicate(aliveHead.Target)))
{
aliveHead = aliveHead.Next;
}
if (aliveHead == null)
{
tail = null;
return(null);
}
var currentAlive = aliveHead;
var aliveTail = aliveHead;
// Find tail removing dead items
while (currentAlive != null)
{
var current = currentAlive.Next;
while (current != null && (current.IsAlive == false || predicate != null && predicate(current.Target)))
{
current = current.Next;
}
currentAlive.Next = current;
aliveTail = currentAlive;
currentAlive = current;
}
tail = aliveTail;
return(aliveHead);
}
internal static WeakLinkedNode <T> CleanImpl(WeakLinkedNode <T> head)
{
return(CleanImpl(head, out _));
}
public void InsertAfter(WeakLinkedNode <T> node)
{
Next = node;
}