1 
2 //  (C) Copyright Edward Diener 2019
3 //  Use, modification and distribution are subject to the Boost Software License,
4 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5 //  http://www.boost.org/LICENSE_1_0.txt).
6 
7 #if !defined(BOOST_TTI_DETAIL_ENCLOSING_TYPE_HPP)
8 #define BOOST_TTI_DETAIL_ENCLOSING_TYPE_HPP
9 
10 #include <boost/mpl/or.hpp>
11 #include <boost/type_traits/is_class.hpp>
12 #include <boost/type_traits/is_union.hpp>
13 
14 namespace boost
15   {
16   namespace tti
17     {
18     namespace detail
19       {
20       template
21         <
22         class BOOST_TTI_DETAIL_TP_T
23         >
24       struct enclosing_type :
25         boost::mpl::or_
26           <
27           boost::is_class<BOOST_TTI_DETAIL_TP_T>,
28           boost::is_union<BOOST_TTI_DETAIL_TP_T>
29           >
30         {
31         };
32       }
33     }
34   }
35 
36 #endif // BOOST_TTI_DETAIL_ENCLOSING_TYPE_HPP
37