refactor : 代码重构

Assets/YooAsset/Runtime/BundleCache/Operations/BCWriteCacheOperation.cs

@@ -0,0 +1,42 @@
+
+namespace YooAsset
+{
+    /// <summary>
+    /// 写入缓存操作基类
+    /// </summary>
+    internal abstract class BCWriteCacheOperation : AsyncOperationBase
+    {
+    }
+
+    /// <summary>
+    /// 写入缓存完成操作
+    /// </summary>
+    internal class BCWriteCacheCompleteOperation : BCWriteCacheOperation
+    {
+        private readonly string _error;
+
+        public BCWriteCacheCompleteOperation()
+        {
+            _error = null;
+        }
+        public BCWriteCacheCompleteOperation(string error)
+        {
+            _error = error;
+        }
+        internal override void InternalStart()
+        {
+            if (string.IsNullOrEmpty(_error))
+            {
+                Status = EOperationStatus.Succeeded;
+            }
+            else
+            {
+                Status = EOperationStatus.Failed;
+                Error = _error;
+            }
+        }
+        internal override void InternalUpdate()
+        {
+        }
+    }
+}