上传框架，上传unitask

Assets/08.UniTask/Runtime/Linq/Throw.cs

@@ -0,0 +1,54 @@
+using Cysharp.Threading.Tasks.Internal;
+using System;
+using System.Threading;
+
+namespace Cysharp.Threading.Tasks.Linq
+{
+    public static partial class UniTaskAsyncEnumerable
+    {
+        public static IUniTaskAsyncEnumerable<TValue> Throw<TValue>(Exception exception)
+        {
+            return new Throw<TValue>(exception);
+        }
+    }
+
+    internal class Throw<TValue> : IUniTaskAsyncEnumerable<TValue>
+    {
+        readonly Exception exception;
+
+        public Throw(Exception exception)
+        {
+            this.exception = exception;
+        }
+
+        public IUniTaskAsyncEnumerator<TValue> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+        {
+            return new _Throw(exception, cancellationToken);
+        }
+
+        class _Throw : IUniTaskAsyncEnumerator<TValue>
+        {
+            readonly Exception exception;
+            CancellationToken cancellationToken;
+
+            public _Throw(Exception exception, CancellationToken cancellationToken)
+            {
+                this.exception = exception;
+                this.cancellationToken = cancellationToken;
+            }
+
+            public TValue Current => default;
+
+            public UniTask<bool> MoveNextAsync()
+            {
+                cancellationToken.ThrowIfCancellationRequested();
+                return UniTask.FromException<bool>(exception);
+            }
+
+            public UniTask DisposeAsync()
+            {
+                return default;
+            }
+        }
+    }
+}