ceph/src/boost/libs/asio/test/properties/cpp03/can_require_unsupported.cpp

   1 //
   2 // cpp03/can_require_unsupported.cpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #include <boost/asio/require.hpp>
  12 #include <cassert>
  13
  14 template <int>
  15 struct prop
  16 {
  17 };
  18
  19 template <int>
  20 struct object
  21 {
  22 };
  23
  24 namespace boost {
  25 namespace asio {
  26
  27 template<int N, int M>
  28 struct is_applicable_property<object<N>, prop<M> >
  29 {
  30   static const bool value = true;
  31 };
  32
  33 } // namespace asio
  34 } // namespace boost
  35
  36 int main()
  37 {
  38   assert((!boost::asio::can_require<object<1>, prop<2> >::value));
  39   assert((!boost::asio::can_require<object<1>, prop<2>, prop<3> >::value));
  40   assert((!boost::asio::can_require<object<1>, prop<2>, prop<3>, prop<4> >::value));
  41   assert((!boost::asio::can_require<const object<1>, prop<2> >::value));
  42   assert((!boost::asio::can_require<const object<1>, prop<2>, prop<3> >::value));
  43   assert((!boost::asio::can_require<const object<1>, prop<2>, prop<3>, prop<4> >::value));
  44 }