Better abstract extension factory, tuple to table creation and others

1 files changed, 31 insertions, 0 deletions

diff --git a/src/WixToolset.Extensibility/BaseExtensionFactory.cs b/src/WixToolset.Extensibility/BaseExtensionFactory.cs
new file mode 100644
index 00000000..2e7fdbb8
--- /dev/null
+++ b/src/WixToolset.Extensibility/BaseExtensionFactory.cs
@@ -0,0 +1,31 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Extensibility
+{
+    using System;
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Base class for extension factories.
+    /// </summary>
+    public abstract class BaseExtensionFactory : IExtensionFactory
+    {
+        protected abstract IEnumerable<Type> ExtensionTypes { get; }
+
+        public virtual bool TryCreateExtension(Type extensionType, out object extension)
+        {
+            extension = null;
+
+            foreach (var type in this.ExtensionTypes)
+            {
+                if (extensionType.IsAssignableFrom(type))
+                {
+                    extension = Activator.CreateInstance(type);
+                    break;
+                }
+            }
+
+            return extension != null;
+        }
+    }
+}