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LotP
2025-08-07 11:59:44 -05:00
committed by KeatonTheBot
parent 3cf90e808d
commit d5c9bc662c
17 changed files with 1577 additions and 730 deletions
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src/Ryujinx.Common/Collections/IntrusiveRedBlackTree.cs
+84 -5
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@@ -14,12 +14,13 @@ namespace Ryujinx.Common.Collections
/// Adds a new node into the tree.
/// </summary>
/// <param name="node">Node to be added</param>
/// <param name="parent">Node to be added under</param>
/// <exception cref="ArgumentNullException"><paramref name="node"/> is null</exception>
public void Add(T node)
public void Add(T node, T parent = null)
{
ArgumentNullException.ThrowIfNull(node);
Insert(node);
Insert(node, parent);
}
/// <summary>
@@ -75,9 +76,11 @@ namespace Ryujinx.Common.Collections
/// Inserts a new node into the tree.
/// </summary>
/// <param name="node">Node to be inserted</param>
private void Insert(T node)
/// <param name="parent">Node to be inserted under</param>
private void Insert(T node, T parent = null)
{
T newNode = BSTInsert(node);
T newNode = parent != null ? InsertWithParent(node, parent) : BSTInsert(node);
RestoreBalanceAfterInsertion(newNode);
}
@@ -120,10 +123,78 @@ namespace Ryujinx.Common.Collections
else if (newNode.CompareTo(parent) < 0)
{
parent.Left = newNode;
newNode.Successor = parent;
if (parent.Predecessor != null)
{
newNode.Predecessor = parent.Predecessor;
parent.Predecessor = newNode;
newNode.Predecessor.Successor = newNode;
}
parent.Predecessor = newNode;
}
else
{
parent.Right = newNode;
newNode.Predecessor = parent;
if (parent.Successor != null)
{
newNode.Successor = parent.Successor;
newNode.Successor.Predecessor = newNode;
}
parent.Successor = newNode;
}
Count++;
return newNode;
}
/// <summary>
/// Insertion Mechanism for a Binary Search Tree (BST).
/// <br></br>
/// Inserts a new node directly under a parent node
/// where all children in the left subtree are less than <paramref name="newNode"/>,
/// and all children in the right subtree are greater than <paramref name="newNode"/>.
/// </summary>
/// <param name="newNode">Node to be inserted</param>
/// <param name="parent">Node to be inserted under</param>
/// <returns>The inserted Node</returns>
private T InsertWithParent(T newNode, T parent)
{
newNode.Parent = parent;
if (newNode.CompareTo(parent) < 0)
{
parent.Left = newNode;
newNode.Successor = parent;
if (parent.Predecessor != null)
{
newNode.Predecessor = parent.Predecessor;
parent.Predecessor = newNode;
newNode.Predecessor.Successor = newNode;
}
parent.Predecessor = newNode;
}
else
{
parent.Right = newNode;
newNode.Predecessor = parent;
if (parent.Successor != null)
{
newNode.Successor = parent.Successor;
newNode.Successor.Predecessor = newNode;
}
parent.Successor = newNode;
}
Count++;
return newNode;
@@ -156,7 +227,7 @@ namespace Ryujinx.Common.Collections
}
else
{
T element = Minimum(RightOf(nodeToDelete));
T element = nodeToDelete.Successor;
child = RightOf(element);
parent = ParentOf(element);
@@ -184,6 +255,9 @@ namespace Ryujinx.Common.Collections
element.Left = old.Left;
element.Right = old.Right;
element.Parent = old.Parent;
element.Predecessor = old.Predecessor;
if (element.Predecessor != null)
element.Predecessor.Successor = element;
if (ParentOf(old) == null)
{
@@ -238,6 +312,11 @@ namespace Ryujinx.Common.Collections
{
RestoreBalanceAfterRemoval(child);
}
if (old.Successor != null)
old.Successor.Predecessor = old.Predecessor;
if (old.Predecessor != null)
old.Predecessor.Successor = old.Successor;
return old;
}