daily update on 20230525 by nitload youmu, ses00001 not solved

源代码/StgSharp/Logic/ContainerNode.cs

@@ -1,48 +1,74 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data.SqlTypes;
+using System.Diagnostics.CodeAnalysis;
 using System.Text;
 
 namespace StgSharp
 {
     public abstract class INode<T> where T : INode<T>
     {
+        [NotNull]
         protected ContainerNode<T> _id;
+
+        [AllowNull]
         internal ContainerNode<T> ID { get; }
 
-        internal void setID(ContainerNode<T> id)
+        internal ContainerNode<T> Previous 
         {
-            if (_id!=null)
-            {
-                throw new ArgumentException("Cannot set ID twice");
-            }
-            else
-            {
-                _id = id;
-            }
+            get { return _id._previous; }
+            set { _id._previous = value; }
+        }
+
+        internal ContainerNode<T> Next
+        {
+            get { return _id._next; }
+            set { _id._next = value; }
+        }
+
+        public INode()
+        {
+            _id = new ContainerNode<T>(this as T);
+        }
+
+        internal void SetId(ContainerNode<T> tContainer) 
+        {
+            _id = tContainer;
         }
 
         internal void SelfDestrcut()
         {
             _id._previous._next = _id._next;
             _id._next._previous = _id._previous;
-            this._id = default;
+            _id._next = null;
+            _id._previous = null;
+            GC.Collect();
         }
 
     }
 
 
-    public class ContainerNode<T>  where T : INode<T>
+    public class ContainerNode<T> : INullable where T : INode<T>
     {
         internal readonly T _value;
+
+        [AllowNull]
         internal ContainerNode<T> _previous;
+        [AllowNull]
         internal ContainerNode<T> _next;
-        internal ContainerNode<T> _side;
+
+        internal ContainerNode()
+        {
+        }
+
 
         public ContainerNode(T t)
         {
             _value = t;
-            t.setID(this);
+            _previous = new ContainerNode<T>();
+            _next = new ContainerNode<T>();
         }
 
         public virtual ContainerNode<T> Previous
@@ -57,17 +83,16 @@ namespace StgSharp
             set { _next = value; }
         }
 
-        public ContainerNode<T> Side
-        {
-            get { return _side; }
-            set { _side = value; }
-        }
-
         public T Value
         {
             get { return _value; }
         }
 
+        public bool IsNull
+        {
+            get;
+        }
+
         public void Remove()
         {
             _previous.Next = _next;