From cbe5ed37c70fa88cb11d2716a3e9e1a40511b9db Mon Sep 17 00:00:00 2001
From: Nitr4m12 <67806925+Nitr4m12@users.noreply.github.com>
Date: Mon, 10 Aug 2026 15:26:02 -0400
Subject: [PATCH] util: Add `IntrusiveListBaseNode` and traits

---
 include/nn/util/util_IntrusiveList.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/nn/util/util_IntrusiveList.h b/include/nn/util/util_IntrusiveList.h
index 319f43a8..4e75cf7f 100644
--- a/include/nn/util/util_IntrusiveList.h
+++ b/include/nn/util/util_IntrusiveList.h
@@ -338,6 +338,30 @@ class IntrusiveList {
     detail::IntrusiveListImplementation m_Implementation;
 };
 
+template <class T, class Tag = T>
+class IntrusiveListBaseNode : public IntrusiveListNode {
+public:
+    IntrusiveListBaseNode();
+};
+
+template <class T, class Tag = T>
+class IntrusiveListBaseNodeTraits {
+public:
+    using BaseNodeType = IntrusiveListBaseNode<T, Tag>;
+
+    static IntrusiveListNode& GetNode(T& ref) { return ref; }
+
+    static const IntrusiveListNode& GetNode(const T& ref) { return ref; }
+
+    static T& GetItem(IntrusiveListNode& node) {
+        return static_cast<T&>(node);
+    }
+
+    static const T& GetItem(const IntrusiveListNode& node) {
+        return static_cast<const T&>(node);
+    }
+};
+
 template <class HolderT, IntrusiveListNode HolderT::*Member, class T = HolderT>
 class IntrusiveListMemberNodeTraits {
     friend class IntrusiveList<T, IntrusiveListMemberNodeTraits>;