public FastLinkedListNode <T> AddLast(T value)
{
if (Last == null)
{
Debug.Assert(First == null);
Debug.Assert(Count == 0);
First = Last = new FastLinkedListNode <T>()
{
Value = value, Next = null, Previous = null
};
Count++;
return(Last);
}
else
{
Debug.Assert(First != null);
Debug.Assert(Count >= 1);
var oldLast = Last;
var nn = new FastLinkedListNode <T>()
{
Value = value, Next = null, Previous = oldLast
};
Debug.Assert(oldLast.Next == null);
oldLast.Next = nn;
Last = nn;
Count++;
return(nn);
}
}
public void Remove(FastLinkedListNode <T> node)
{
Debug.Assert(First != null && Last != null);
if (node.Previous != null && node.Next != null)
{
Debug.Assert(First != null);
Debug.Assert(Last != null);
Debug.Assert(First != node);
Debug.Assert(Last != node);
node.Previous.Next = node.Next;
node.Next.Previous = node.Previous;
Count--;
}
else if (node.Previous == null && node.Next == null)
{
Debug.Assert(First == node);
Debug.Assert(Last == node);
First = Last = null;
Count--;
}
else if (node.Previous != null)
{
Debug.Assert(First != null);
Debug.Assert(First != node);
Debug.Assert(Last == node);
node.Previous.Next = null;
Last = node.Previous;
Count--;
}
else
{
Debug.Assert(Last != null);
Debug.Assert(Last != node);
Debug.Assert(First == node);
node.Next !.Previous = null;
First = node.Next;
Count--;
}
}
public void AddBefore(FastLinkedListNode <T> nextNode, FastLinkedListNode <T> chainFirst, FastLinkedListNode <T> chainLast, int chainedCount)
{
var prevNode = nextNode.Previous;
Debug.Assert(First != null && Last != null);
Debug.Assert(prevNode != null || First == nextNode);
Debug.Assert(prevNode == null || prevNode.Next == nextNode);
nextNode.Previous = chainLast;
chainLast.Next = nextNode;
if (prevNode != null)
{
prevNode.Next = chainFirst;
}
chainFirst.Previous = prevNode;
if (First == nextNode)
{
First = chainFirst;
}
Count += chainedCount;
}
public void AddAfter(FastLinkedListNode <T> prevNode, FastLinkedListNode <T> chainFirst, FastLinkedListNode <T> chainLast, int chainedCount)
{
var nextNode = prevNode.Next;
Debug.Assert(First != null && Last != null);
Debug.Assert(nextNode != null || Last == prevNode);
Debug.Assert(nextNode == null || nextNode.Previous == prevNode);
prevNode.Next = chainFirst;
chainFirst.Previous = prevNode;
if (nextNode != null)
{
nextNode.Previous = chainLast;
}
chainLast.Previous = nextNode;
if (Last == prevNode)
{
Last = chainLast;
}
Count += chainedCount;
}
public void AddLast(FastLinkedListNode <T> chainFirst, FastLinkedListNode <T> chainLast, int chainedCount)
{
if (Last == null)
{
Debug.Assert(First == null);
Debug.Assert(Count == 0);
First = chainFirst;
Last = chainLast;
chainFirst.Previous = null;
chainLast.Next = null;
Count = chainedCount;
}
else
{
Debug.Assert(First != null);
Debug.Assert(Count >= 1);
var oldLast = Last;
Debug.Assert(oldLast.Next == null);
oldLast.Next = chainFirst;
Last = chainLast;
Count += chainedCount;
}
}
public FastLinkedListNode <T> AddBefore(FastLinkedListNode <T> nextNode, T value)
{
var prevNode = nextNode.Previous;
Debug.Assert(First != null && Last != null);
Debug.Assert(prevNode != null || First == nextNode);
Debug.Assert(prevNode == null || prevNode.Next == nextNode);
var nn = new FastLinkedListNode <T>()
{
Value = value, Next = nextNode, Previous = prevNode
};
nextNode.Previous = nn;
if (prevNode != null)
{
prevNode.Next = nn;
}
if (First == nextNode)
{
First = nn;
}
Count++;
return(nn);
}
public FastLinkedListNode <T> AddAfter(FastLinkedListNode <T> prevNode, T value)
{
var nextNode = prevNode.Next;
Debug.Assert(First != null && Last != null);
Debug.Assert(nextNode != null || Last == prevNode);
Debug.Assert(nextNode == null || nextNode.Previous == prevNode);
var nn = new FastLinkedListNode <T>()
{
Value = value, Next = nextNode, Previous = prevNode
};
prevNode.Next = nn;
if (nextNode != null)
{
nextNode.Previous = nn;
}
if (Last == prevNode)
{
Last = nn;
}
Count++;
return(nn);
}
public void Clear()
{
Count = 0;
First = Last = null;
}
