testss

Library/PackageCache/com.unity.2d.animation@6.0.1/Editor/SkinningModule/Undo/DisableUndoScope.cs

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+using System;
+using UnityEngine;
+
+namespace UnityEditor.U2D.Animation
+{
+    internal class DisableUndoScope : IDisposable
+    {
+        private bool m_Disposed;
+        private ICacheUndo m_CacheUndo;
+        private IUndo m_UndoOverride;
+
+        public DisableUndoScope(ICacheUndo cacheUndo)
+        {
+            Debug.Assert(cacheUndo != null);
+
+            m_CacheUndo = cacheUndo;
+            m_UndoOverride = m_CacheUndo.undoOverride;
+            m_CacheUndo.undoOverride = new DisabledUndo();
+        }
+
+        ~DisableUndoScope()
+        {
+            if (!m_Disposed)
+                Debug.LogError("Scope was not disposed! You should use the 'using' keyword or manually call Dispose.");
+        }
+
+        public void Dispose()
+        {
+            if (m_Disposed)
+                return;
+
+            m_Disposed = true;
+            
+            if (m_CacheUndo != null)
+                m_CacheUndo.undoOverride = m_UndoOverride;
+
+        }
+    }
+}