Imported Upstream version 5.14.0.78

Former-commit-id: 3494343bcc9ddb42b36b82dd9ae7b69e85e0229f

mcs/class/System.Runtime.Serialization/ReferenceSources/DataContractSerializerExtensions.cs

@@ -0,0 +1,84 @@
+// 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.
+
+#if !NO_CODEDOM
+using System.CodeDom;
+#endif
+using System.Collections.ObjectModel;
+using System.Reflection;
+
+namespace System.Runtime.Serialization
+{
+    public static class DataContractSerializerExtensions
+    {
+        public static ISerializationSurrogateProvider GetSerializationSurrogateProvider(this DataContractSerializer serializer) 
+        {
+            SurrogateProviderAdapter adapter = serializer.DataContractSurrogate as SurrogateProviderAdapter;
+            return (adapter == null) ? null : adapter.Provider;
+        }
+
+        public static void SetSerializationSurrogateProvider(this DataContractSerializer serializer, ISerializationSurrogateProvider provider)
+        {
+            // allocate every time, expectation is that this won't happen enough to warrant maintaining a CondtionalWeakTable.
+            IDataContractSurrogate adapter = new SurrogateProviderAdapter(provider);
+
+            // DCS doesn't expose a setter, access the field directly as a workaround
+            typeof(DataContractSerializer)
+              .GetField("dataContractSurrogate", BindingFlags.Instance | BindingFlags.NonPublic)
+              .SetValue(serializer, adapter);
+        }
+
+        private class SurrogateProviderAdapter : IDataContractSurrogate
+        {
+            private ISerializationSurrogateProvider _provider;
+            public SurrogateProviderAdapter(ISerializationSurrogateProvider provider)
+            {
+                _provider = provider;
+            }
+
+            public ISerializationSurrogateProvider Provider { get { return _provider; } }
+            public object GetCustomDataToExport(Type clrType, Type dataContractType)
+            {
+                throw NotImplemented.ByDesign;
+            }
+
+            public object GetCustomDataToExport(MemberInfo memberInfo, Type dataContractType)
+            {
+                throw NotImplemented.ByDesign;
+            }
+
+            public Type GetDataContractType(Type type)
+            {
+                return _provider.GetSurrogateType(type);
+            }
+
+            public object GetDeserializedObject(object obj, Type targetType)
+            {
+                return _provider.GetDeserializedObject(obj, targetType);
+            }
+
+            public void GetKnownCustomDataTypes(Collection<Type> customDataTypes)
+            {
+                throw NotImplemented.ByDesign;
+            }
+
+            public object GetObjectToSerialize(object obj, Type targetType)
+            {
+                return _provider.GetObjectToSerialize(obj, targetType);
+            }
+
+            public Type GetReferencedTypeOnImport(string typeName, string typeNamespace, object customData)
+            {
+                throw NotImplemented.ByDesign;
+            }
+
+#if !NO_CODEDOM
+            public CodeTypeDeclaration ProcessImportedType(CodeTypeDeclaration typeDeclaration, CodeCompileUnit compileUnit)
+            {
+                throw NotImplemented.ByDesign;
+            }
+#endif
+        }
+    }
+}