1 files changed, 33 insertions, 0 deletions

diff --git a/src/WixToolset.Extensibility/BaseExtensionCommandLine.cs b/src/WixToolset.Extensibility/BaseExtensionCommandLine.cs
new file mode 100644
index 00000000..77e8a5bd
--- /dev/null
+++ b/src/WixToolset.Extensibility/BaseExtensionCommandLine.cs
@@ -0,0 +1,33 @@
+// 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.Collections.Generic;
+    using System.Linq;
+    using WixToolset.Extensibility.Data;
+    using WixToolset.Extensibility.Services;
+
+    public abstract class BaseExtensionCommandLine : IExtensionCommandLine
+    {
+        public IEnumerable<ExtensionCommandLineSwitch> CommandLineSwitches => Enumerable.Empty<ExtensionCommandLineSwitch>();
+
+        public virtual void PostParse()
+        {
+        }
+
+        public virtual void PreParse(ICommandLineContext context)
+        {
+        }
+
+        public virtual bool TryParseArgument(ICommandLineParser parser, string argument)
+        {
+            return false;
+        }
+
+        public virtual bool TryParseCommand(ICommandLineParser parser, out ICommandLineCommand command)
+        {
+            command = null;
+            return false;
+        }
+    }
+}