Imported Upstream version 2.0.0.11353upstream/2.0.0.11353

1 files changed, 31 insertions, 0 deletions

diff --git a/src/mscorlib/shared/System/Runtime/Serialization/SafeSerializationEventArgs.cs b/src/mscorlib/shared/System/Runtime/Serialization/SafeSerializationEventArgs.cs
new file mode 100644
index 0000000000..896b91fca0
--- /dev/null
+++ b/src/mscorlib/shared/System/Runtime/Serialization/SafeSerializationEventArgs.cs
@@ -0,0 +1,31 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.Generic;
+
+namespace System.Runtime.Serialization
+{
+    // SafeSerializationEventArgs are provided to the delegates which do safe serialization.  Each delegate
+    // serializes its own state into an IDeserializationCallback instance which must, itself, be serializable.
+    // These indivdiual states are then added to the SafeSerializationEventArgs in order to be saved away when
+    // the original ISerializable type is serialized.
+    public sealed class SafeSerializationEventArgs : EventArgs
+    {
+        private readonly List<object> _serializedStates = new List<object>();
+
+        internal SafeSerializationEventArgs() { }
+
+        public void AddSerializedState(ISafeSerializationData serializedState)
+        {
+            if (serializedState == null)
+                throw new ArgumentNullException(nameof(serializedState));
+            if (!serializedState.GetType().IsSerializable)
+                throw new ArgumentException(SR.Format(SR.Serialization_NonSerType, serializedState.GetType(), serializedState.GetType().Assembly.FullName));
+
+            _serializedStates.Add(serializedState);
+        }
+
+        public StreamingContext StreamingContext { get; }
+    }
+}