ceph/src/boost/boost/hana/concept/struct.hpp

   1 /*!
   2 @file
   3 Defines `boost::hana::Struct`.
   4
   5 @copyright Louis Dionne 2013-2017
   6 Distributed under the Boost Software License, Version 1.0.
   7 (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
   8  */
   9
  10 #ifndef BOOST_HANA_CONCEPT_STRUCT_HPP
  11 #define BOOST_HANA_CONCEPT_STRUCT_HPP
  12
  13 #include <boost/hana/fwd/concept/struct.hpp>
  14
  15 #include <boost/hana/accessors.hpp>
  16 #include <boost/hana/config.hpp>
  17 #include <boost/hana/core/default.hpp>
  18 #include <boost/hana/core/tag_of.hpp>
  19 #include <boost/hana/detail/integral_constant.hpp>
  20
  21
  22 BOOST_HANA_NAMESPACE_BEGIN
  23     template <typename S>
  24     struct Struct
  25         : hana::integral_constant<bool,
  26             !is_default<accessors_impl<typename tag_of<S>::type>>::value
  27         >
  28     { };
  29 BOOST_HANA_NAMESPACE_END
  30
  31 #endif // !BOOST_HANA_CONCEPT_STRUCT_HPP