private void notifyChanged(NotifyCollectionChangedAction action, LinkNodeEx <T> node)
{
if (CollectionChanged != null)
{
this.CollectionChanged(this, new NotifyCollectionChangedEventArgs <LinkNodeEx <T> >(action, node, -1));
}
if (_collectionChanged != null)
{
_collectionChanged(this, new NotifyCollectionChangedEventArgs(action, node, -1));
}
}
public bool Contains(LinkNodeEx <T> node)
{
if (node.Link == this)
{
foreach (var n in this)
{
if (n == node)
{
return(true);
}
}
}
return(false);
}
public void Remove(T value)
{
LinkNodeEx <TimeoutItem <T> > item = null;
foreach (var t in _link)
{
if (t.Value.Value.Equals(value))
{
item = t;
}
}
if (item != null)
{
_link.Remove(item);
}
}
private LinkNodeEx <T> getNode(T value)
{
LinkNodeEx <T> retValue = null;
if (_pool != null)
{
retValue = _pool.Take();
retValue.Value = value;
}
else
{
retValue = new LinkNodeEx <T>(value);
}
return(retValue);
}
public void AddFirst(LinkNodeEx <T> node)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (node.Link != null)
{
if (node.Link == this)
{
throw new InvalidOperationException("node已存在于当前的链表中，请不要重复添加");
}
else
{
throw new InvalidOperationException("node 属于另一个 LinkedListEx<T>");
}
}
lockSlim.EnterWriteLock();
insertNode(null, node);
//if (_first == null)
//{
// _first = node;
// _rear = node;
// Interlocked.Increment(ref count);
//}
//else
//{
// //addNewNode(node, null, _first);
// //node.Next = _first;
// //_first.Previous = node;
//}
//node.Link = this;
lockSlim.ExitWriteLock();
}
private void removeNode(LinkNodeEx <T> node, bool isRelease = true)
{
if (_first == null || node.Link != this)
{
return;
}
if (node.Previous == null && node.Next == null)
{
_first = null;
_rear = null;
}
else if (node.Previous == null) //如果需要移除的是首项值
{
_first.Next.Previous = null;
_first = node.Next;
}
else if (node.Next == null)
{
_rear.Previous.Next = null;
_rear = node.Previous;
}
else
{
node.Previous.Next = node.Next;
node.Next.Previous = node.Previous;
}
if (isRelease)
{
node.Release();
}
Interlocked.Decrement(ref count);
notifyChanged(NotifyCollectionChangedAction.Remove, node);
if (node is IRecyclable)
{
node.Dispose();
}
}
public LinkNodeEx <T> Find(T value)
{
lockSlim.EnterReadLock();
LinkNodeEx <T> retNode = null;
foreach (var node in this)
{
if (compare(node.Value, value))
{
retNode = node;
break;
}
}
lockSlim.ExitReadLock();
return(retNode);
}
public LinkNodeEx <T> FindLast(T value)
{
lockSlim.EnterReadLock();
LinkNodeEx <T> retValue = null;
var g = GetEnumeratorBack();
foreach (var node in g)
{
if (compare(node.Value, value))
{
retValue = node;
break;
}
}
//if (_first != null)
//{
// var tempNode = _rear;
// while (tempNode != null)
// {
// if (compare(tempNode.Value,value))
// {
// retValue = tempNode;
// break;
// }
// tempNode = tempNode.Previous;
// }
//}
lockSlim.ExitReadLock();
return(retValue);
}
public void AddAfter(LinkNodeEx <T> node, LinkNodeEx <T> newNode)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (node.Link != this)
{
throw new InvalidOperationException("node 不在当前 LinkedListEx<T>中");
}
if (newNode == null)
{
throw new ArgumentNullException("newNode");
}
if (newNode.Link != null)
{
throw new InvalidOperationException("newNode 属于另一个 LinkedListEx<T>");
}
lockSlim.EnterWriteLock();
insertNode(node, newNode);
//addNewNode(newNode, node, node.Next);
//newNode.Previous = node;
//newNode.Next = node.Next;
//node.Next = newNode;
//newNode.Link = this;
lockSlim.ExitWriteLock();
}
//private void addNewNode(LinkNodeEx<T> node, LinkNodeEx<T> pre, LinkNodeEx<T> next)
//{
// node.Link = this;
// node.Previous = pre;
// node.Next = next;
// Interlocked.Increment(ref count);
//}
private void insertNode(LinkNodeEx <T> prevNode, LinkNodeEx <T> newNode)
{
if (_first == null || _rear == null)
{
_first = newNode;
_rear = newNode;
}
else
{
if (prevNode == null) //如果该值为空，则表示插入在_frist之前
{
newNode.Next = _first;
_first.Previous = newNode;
_first = newNode;
}
else //否则，为插入到node之后
{
newNode.Previous = prevNode;
newNode.Next = prevNode.Next;
prevNode.Next = newNode;
if (prevNode == _rear) //如果插入为末尾，则修改_rear值
{
_rear = newNode;
}
}
}
newNode.Link = this;
Interlocked.Increment(ref count);
notifyChanged(NotifyCollectionChangedAction.Add, newNode);
}
public LinkNodeEx <T> RemoveFirst(bool isRelease = true)
{
LinkNodeEx <T> old = null;
lockSlim.EnterWriteLock();
if (count > 0)
{
Interlocked.Exchange(ref old, _first);
//old = _first;
removeNode(_first, isRelease);
}
//if (_first != null)
//{
// if (_first == _rear)
// {
// _first = null;
// _rear = null;
// }
// else
// {
// var tempNode = _first;
// _first = _first.Next;
// deleteNode(tempNode);
// }
//}
lockSlim.ExitWriteLock();
return(old);
}
/// <summary>
/// 将从startNode节点开始，至endNode节点之间的所有节点截取出来，并返回截取部分的起始节点
/// </summary>
/// <param name="startNode">截取的起始节点</param>
/// <param name="endNode">截取的结束节点</param>
/// <returns>返回截取部分的起始节点</returns>
public T[] CutBetween(LinkNodeEx <T> startNode, LinkNodeEx <T> endNode)
{
if (startNode == null)
{
throw new ArgumentNullException("startNode");
}
if (startNode.Link != this)
{
throw new InvalidOperationException("startNode 不在当前 LinkedListEx<T>中");
}
if (endNode == null)
{
throw new ArgumentNullException("endNode");
}
if (endNode.Link != this)
{
throw new InvalidOperationException("endNode 属于另一个 LinkedListEx<T>");
}
T[] retList = null;
lockSlim.EnterWriteLock();
if (startNode == endNode) //如果起始与结束一致，则移除一个节点
{
retList = new T[] { startNode.Value };
removeNode(startNode, false);
}
else
{
var tempNode = startNode;
var isSuccess = false;
while (tempNode != null)
{
if (tempNode == endNode)
{
isSuccess = true;
break;
}
tempNode = tempNode.Next;
}
if (!isSuccess) //如果endNode指定的节点在startNode之后，则需要调换两个节点
{
var t = startNode;
startNode = endNode;
endNode = t;
}
startNode.Previous.Next = endNode.Next;
endNode.Next.Previous = startNode.Previous;
startNode.Previous = null;
endNode.Next = null;
var tlist = new List <T>();
var tempNode1 = startNode;
LinkNodeEx <T> t1 = null;
while (tempNode1 != null)
{
t1 = tempNode1.Next;
tlist.Add(tempNode1.Value);
tempNode1.Release();
tempNode1 = t1;
}
retList = tlist.ToArray();
}
lockSlim.ExitWriteLock();
return(retList);
//var tempNode1 = startNode;
//while (tempNode1 != null)
//{
// tempNode1.Link = null;
// tempNode1 = tempNode1.Next;
//}
//return startNode;
}
/// <summary>
/// 将从node节点开始，至末端节点之间的所有节点截取出来，并返回截取部分的起始节点
/// </summary>
/// <param name="node">截取的起始节点</param>
/// <returns>返回截取部分的起始节点</returns>
public T[] CutFrom(LinkNodeEx <T> node)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (node.Link != this)
{
throw new InvalidOperationException("node 不在当前 LinkedListEx<T>中");
}
lockSlim.EnterReadLock();
//var oldRear = _rear;
var ret = node;
node.Next = null;
_rear = node.Previous;
_rear.Next = null;
node.Previous = null;
if (_rear != null)
{
if (_rear.Previous == null)
{
_first = _rear;
count = 1;
}
else
{
count -= node.Count();
}
}
else
{
_first = null;
_rear = null;
count = 0;
}
lockSlim.ExitWriteLock();
ret.Previous = null;
var tlist = new List <T>();
var tempNode = ret;
LinkNodeEx <T> t = null;
while (tempNode != null)
{
t = tempNode.Next;
tlist.Add(tempNode.Value);
tempNode.Release();
tempNode = t;
}
return(tlist.ToArray());
//var tempNode = ret;
//while (tempNode != null)
//{
// ret.Link = null;
// tempNode = tempNode.Next;
//}
//return ret;
}
/// <summary>
/// 将从头节点开始，至node节点之间的所有节点截取出来，并返回截取部分的起始节点
/// </summary>
/// <param name="node">截取的结束节点</param>
/// <returns>返回截取部分的起始节点</returns>
public T[] CutTo(LinkNodeEx <T> node)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (node.Link != this)
{
throw new InvalidOperationException("node 不在当前 LinkedListEx<T>中");
}
lockSlim.EnterWriteLock();
var ret = _first;
var tempCurrentNode = _first;
var cutCount = 0;
while (tempCurrentNode != null)
{
cutCount += 1;
tempCurrentNode = tempCurrentNode.Next;
}
//_first.Previous.Next = null;
_first = node.Next;
if (_first != null)
{
_first.Previous = null;
if (_first.Next == null)
{
count = 1;
}
else
{
count -= cutCount;
}
}
else
{
_first = null;
_rear = null;
count = 0;
}
lockSlim.ExitWriteLock();
var tlist = new List <T>();
var tempNode = ret;
LinkNodeEx <T> t = null;
while (tempNode != null)
{
t = tempNode.Next;
tlist.Add(tempNode.Value);
tempNode.Release();
tempNode = t;
}
return(tlist.ToArray());
}
public LinkNodeEx <T> Copy()
{
var temp = new LinkNodeEx <T>(Value);
return(temp);
}
