Add project files.

Compat.Private.Serialization/Compat/Runtime/Serialization/CollectionDataNode.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+
+namespace Compat.Runtime.Serialization
+{
+    internal class CollectionDataNode : DataNode<Array>
+    {
+        private IList<IDataNode> items;
+        private string itemName;
+        private string itemNamespace;
+        private int size = -1;
+
+        internal CollectionDataNode()
+        {
+            dataType = Globals.TypeOfCollectionDataNode;
+        }
+
+        internal IList<IDataNode> Items
+        {
+            get => items;
+            set => items = value;
+        }
+
+        internal string ItemName
+        {
+            get => itemName;
+            set => itemName = value;
+        }
+
+        internal string ItemNamespace
+        {
+            get => itemNamespace;
+            set => itemNamespace = value;
+        }
+
+        internal int Size
+        {
+            get => size;
+            set => size = value;
+        }
+
+        public override void GetData(ElementData element)
+        {
+            base.GetData(element);
+
+            element.AddAttribute(Globals.SerPrefix, Globals.SerializationNamespace, Globals.ArraySizeLocalName, Size.ToString(NumberFormatInfo.InvariantInfo));
+        }
+
+        public override void Clear()
+        {
+            base.Clear();
+            items = null;
+            size = -1;
+        }
+    }
+}