ceph/src/boost/libs/asio/test/properties/cpp14/query_member.cpp

   1 //
   2 // cpp14/query_member.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/query.hpp>
  12 #include <cassert>
  13
  14 struct prop
  15 {
  16   template <typename> static constexpr bool is_applicable_property_v = true;
  17 };
  18
  19 struct object
  20 {
  21   constexpr int query(prop) const { return 123; }
  22 };
  23
  24 int main()
  25 {
  26   object o1 = {};
  27   int result1 = boost::asio::query(o1, prop());
  28   assert(result1 == 123);
  29   (void)result1;
  30
  31   const object o2 = {};
  32   int result2 = boost::asio::query(o2, prop());
  33   assert(result2 == 123);
  34   (void)result2;
  35
  36   constexpr object o3 = {};
  37   constexpr int result3 = boost::asio::query(o3, prop());
  38   assert(result3 == 123);
  39   (void)result3;
  40 }