imp v34 & v35

Spine/Implementations/SpineWrappers/V34/Skin34.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Spine.SpineWrappers;
+using SpineRuntime34;
+
+namespace Spine.Implementations.SpineWrappers.V34
+{
+    internal sealed class Skin34 : ISkin
+    {
+        private readonly Skin _o;
+
+        /// <summary>
+        /// 使用指定名字创建空皮肤
+        /// </summary>
+        public Skin34(string name) => _o = new(name);
+
+        /// <summary>
+        /// 包装已有皮肤对象
+        /// </summary>
+        public Skin34(Skin innerObject) => _o = innerObject;
+
+        public Skin InnerObject => _o;
+
+        public string Name => _o.Name;
+
+        public void AddSkin(ISkin skin)
+        {
+            if (skin is Skin34 sk)
+            {
+                // NOTE: 3.7 及以下不支持 AddSkin
+                foreach (var (k, v) in sk._o.Attachments)
+                    _o.AddAttachment(k.slotIndex, k.name, v);
+                return;
+            }
+            throw new ArgumentException($"Received {skin.GetType().Name}", nameof(skin));
+        }
+
+        public void Clear() => _o.Attachments.Clear();
+
+        public override string ToString() => _o.ToString();
+    }
+}