ceph/src/boost/libs/pfr/test/run/non_dc_non_cop_but_mov.cpp

   1 // Copyright (c) 2018-2020 Antony Polukhin
   2 //
   3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6
   7 #include <boost/pfr/tuple_size.hpp>
   8
   9 #include <type_traits>
  10
  11 struct X {
  12     X(X&&) = default;
  13     X(const X&) = delete;
  14
  15     X& operator=(X&&) = default;
  16     X& operator=(const X&) = delete;
  17 };
  18 struct S { X x0; X x1; int x2; X x3; };
  19
  20 static_assert(!std::is_default_constructible<X>::value, "");
  21 static_assert(!std::is_default_constructible<S>::value, "");
  22
  23 int main() {
  24     static_assert(boost::pfr::tuple_size_v<S> == 4, "");
  25
  26     struct S5_0 { int x0; int x1; int x2; int x3; X x4; };
  27     static_assert(boost::pfr::tuple_size_v<S5_0> == 5, "");
  28
  29     struct S5_1 { X x0; int x1; int x2; int x3; int x4; };
  30     static_assert(boost::pfr::tuple_size_v<S5_1> == 5, "");
  31
  32     struct S5_2 { int x0; int x1; X x2; int x3; int x4; };
  33     static_assert(boost::pfr::tuple_size_v<S5_2> == 5, "");
  34
  35     struct S5_3 { int x0; int x1; X x2; int x3; X x4; };
  36     static_assert(boost::pfr::tuple_size_v<S5_3> == 5, "");
  37
  38     struct S5_4 { X x0; X x1; X x2; X x3; X x4; };
  39     static_assert(boost::pfr::tuple_size_v<S5_4> == 5, "");
  40
  41     struct S6 { X x0; X x1; X x2; X x3; X x4;  X x5;};
  42     static_assert(boost::pfr::tuple_size_v<S6> == 6, "");
  43 }
  44