Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Activities/System/Activities/DelegateInArgument.cs

@@ -0,0 +1,65 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//-----------------------------------------------------------------------------
+
+namespace System.Activities
+{
+    public abstract class DelegateInArgument : DelegateArgument
+    {
+        internal DelegateInArgument()
+            : base()
+        {
+            this.Direction = ArgumentDirection.In;
+        }
+    }
+
+    public sealed class DelegateInArgument<T> : DelegateInArgument
+    {
+        public DelegateInArgument()
+            : base()
+        {
+        }
+
+        public DelegateInArgument(string name)
+            : base()
+        {
+            this.Name = name;
+        }
+
+        protected override Type TypeCore
+        {
+            get
+            {
+                return typeof(T);
+            }
+        }
+
+        // Soft-Link: This method is referenced through reflection by
+        // ExpressionUtilities.TryRewriteLambdaExpression.  Update that
+        // file if the signature changes.
+        public new T Get(ActivityContext context)
+        {
+            if (context == null)
+            {
+                throw FxTrace.Exception.ArgumentNull("context");
+            }
+
+            return context.GetValue<T>((LocationReference)this);
+        }
+
+        public void Set(ActivityContext context, T value)
+        {
+            if (context == null)
+            {
+                throw FxTrace.Exception.ArgumentNull("context");
+            }
+
+            context.SetValue((LocationReference)this, value);
+        }
+
+        internal override Location CreateLocation()
+        {
+            return new Location<T>();
+        }
+    }
+}