1 files changed, 46 insertions, 0 deletions
diff --git a/ACE/contrib/utility/Utility/Hetero/TypeList.hpp b/ACE/contrib/utility/Utility/Hetero/TypeList.hpp
new file mode 100644
index 00000000000..ee7e96c2bcd
--- /dev/null
+++ b/ACE/contrib/utility/Utility/Hetero/TypeList.hpp
@@ -0,0 +1,46 @@
+// file      : Utility/Hetero/TypeList.hpp
+// author    : Boris Kolpackov <boris@kolpackov.net>
+// copyright : Copyright (c) 2002-2003 Boris Kolpackov
+// license   : http://kolpackov.net/license.html
+
+#ifndef UTILITY_HETERO_TYPE_LIST_HPP
+#define UTILITY_HETERO_TYPE_LIST_HPP
+
+namespace Utility
+{
+  namespace Hetero
+  {
+    class NullType {};
+
+    template <typename t0 = NullType,
+              typename t1 = NullType,
+              typename t2 = NullType>
+    struct TypeList
+    {
+      typedef t0 T0;
+      typedef t1 T1;
+      typedef t2 T2;
+    };
+
+    template <typename t0, typename t1>
+    struct TypeList<t0, t1, NullType>
+    {
+      typedef t0 T0;
+      typedef t1 T1;
+    };
+
+    template <typename t0>
+    struct TypeList<t0, NullType, NullType>
+    {
+      typedef t0 T0;
+    };
+
+    template <>
+    struct TypeList<NullType, NullType, NullType>
+    {
+    };
+  }
+}
+
+#endif  // UTILITY_HETERO_TYPE_LIST_HPP
+//$Id$