1 files changed, 26 insertions, 0 deletions

diff --git a/src/wixext/DependencyCommon.cs b/src/wixext/DependencyCommon.cs
new file mode 100644
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+++ b/src/wixext/DependencyCommon.cs
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+// 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.Extensions
+{
+    using System;
+    using WixToolset;
+
+    internal static class DependencyCommon
+    {
+        // Bundle attributes are in the upper 32-bits.
+        internal const int ProvidesAttributesBundle = 0x10000;
+
+        // Same values as for the Upgrade table in Windows Installer.
+        internal const int RequiresAttributesMinVersionInclusive = 256;
+        internal const int RequiresAttributesMaxVersionInclusive = 512;
+
+        // The root registry key for the dependency extension. We write to Software\Classes explicitly
+        // based on the current security context instead of HKCR. See
+        // http://msdn.microsoft.com/en-us/library/ms724475(VS.85).aspx for more information.
+        internal static readonly string RegistryRoot = @"Software\Classes\Installer\Dependencies\";
+        internal static readonly string RegistryDependents = "Dependents";
+
+        // The following characters cannot be used in a provider key.
+        internal static readonly char[] InvalidCharacters = new char[] { ' ', '\"', ';', '\\' };
+    }
+}