Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Activities/System/Activities/Debugger/XamlMemberExtensions.cs

@@ -0,0 +1,65 @@
+// <copyright>
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+
+namespace System.Activities.Debugger
+{
+    using System.Reflection;
+    using System.Xaml;
+    using System.Xaml.Schema;
+
+    internal static class XamlMemberExtensions
+    {
+        internal static XamlMember ReplaceXamlMemberInvoker(this XamlMember originalXamlMember, XamlSchemaContext schemaContext, XamlMemberInvoker newInvoker)
+        {
+            if (originalXamlMember.IsEvent)
+            {
+                if (originalXamlMember.IsAttachable)
+                {
+                    UnitTestUtility.Assert(originalXamlMember.UnderlyingMember is MethodInfo, "Guaranteed by XamlMember.");
+                    return new XamlMember(originalXamlMember.Name, originalXamlMember.UnderlyingMember as MethodInfo, schemaContext, newInvoker);
+                }
+                else
+                {
+                    UnitTestUtility.Assert(originalXamlMember.UnderlyingMember is EventInfo, "Guaranteed by XamlMember.");
+                    return new XamlMember(originalXamlMember.UnderlyingMember as EventInfo, schemaContext, newInvoker);
+                }
+            }
+            else if (originalXamlMember.IsDirective)
+            {
+                return originalXamlMember;
+            }
+            else if (originalXamlMember.IsUnknown)
+            {
+                return originalXamlMember;
+            }
+            else
+            {
+                if (originalXamlMember.IsAttachable)
+                {
+                    MethodInfo attachablePropertyMethod = originalXamlMember.UnderlyingMember as MethodInfo;
+                    if (attachablePropertyMethod.ReturnType == typeof(void))
+                    {
+                        return new XamlMember(originalXamlMember.Name, null, originalXamlMember.UnderlyingMember as MethodInfo, schemaContext, newInvoker);
+                    }
+                    else
+                    {
+                        return new XamlMember(originalXamlMember.Name, originalXamlMember.UnderlyingMember as MethodInfo, null, schemaContext, newInvoker);
+                    }
+                }
+                else
+                {
+                    PropertyInfo propertyInfo = originalXamlMember.UnderlyingMember as PropertyInfo;
+                    if (propertyInfo != null)
+                    {
+                        return new XamlMember(propertyInfo, schemaContext, newInvoker);
+                    }
+                    else
+                    {
+                        return originalXamlMember;
+                    }
+                }
+            }
+        }
+    }
+}