ceph/src/boost/boost/type_traits/is_detected_convertible.hpp

   1 /*
   2 Copyright 2017-2018 Glen Joseph Fernandes
   3 <glenjofe -at- gmail.com>
   4
   5 Distributed under the Boost Software License,
   6 Version 1.0. (See accompanying file LICENSE_1_0.txt
   7 or copy at http://www.boost.org/LICENSE_1_0.txt)
   8 */
   9
  10 #ifndef BOOST_TT_IS_DETECTED_CONVERTIBLE_HPP_INCLUDED
  11 #define BOOST_TT_IS_DETECTED_CONVERTIBLE_HPP_INCLUDED
  12
  13 #include <boost/type_traits/detected.hpp>
  14 #include <boost/type_traits/is_convertible.hpp>
  15
  16 namespace boost {
  17
  18 template<class To, template<class...> class Op, class... Args>
  19 using is_detected_convertible = is_convertible<detected_t<Op, Args...>, To>;
  20
  21 #if !defined(BOOST_NO_CXX14_VARIABLE_TEMPLATES)
  22 template<class To, template<class...> class Op, class... Args>
  23 constexpr bool is_detected_convertible_v = is_detected_convertible<To, Op,
  24     Args...>::value;
  25 #endif
  26
  27 } /* boost */
  28
  29 #endif