ceph/src/boost/libs/fusion/test/sequence/define_struct_inline_move.cpp

   1 /*=============================================================================
   2     Copyright (c) 2016 Kohei Takahashi
   3
   4     Distributed under the Boost Software License, Version 1.0. (See accompanying
   5     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 ==============================================================================*/
   7
   8 #include <boost/config.hpp>
   9 #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
  10
  11 #include <boost/detail/lightweight_test.hpp>
  12 #include <boost/fusion/adapted/struct/define_struct_inline.hpp>
  13 #include <utility>
  14
  15 struct wrapper
  16 {
  17     int value;
  18
  19     wrapper() : value(42) {}
  20     wrapper(wrapper&& other) : value(other.value) { other.value = 0; }
  21     wrapper(wrapper const& other) : value(other.value) {}
  22
  23     wrapper& operator=(wrapper&& other) { value = other.value; other.value = 0; return *this; }
  24     wrapper& operator=(wrapper const& other) { value = other.value; return *this; }
  25 };
  26
  27 namespace ns
  28 {
  29     BOOST_FUSION_DEFINE_STRUCT_INLINE(value, (wrapper, w))
  30 }
  31
  32 int main()
  33 {
  34     using namespace boost::fusion;
  35
  36     {
  37         ns::value x;
  38         ns::value y(x); // copy
  39
  40         BOOST_TEST(x.w.value == 42);
  41         BOOST_TEST(y.w.value == 42);
  42
  43         ++y.w.value;
  44
  45         BOOST_TEST(x.w.value == 42);
  46         BOOST_TEST(y.w.value == 43);
  47
  48         y = x; // copy assign
  49
  50         BOOST_TEST(x.w.value == 42);
  51         BOOST_TEST(y.w.value == 42);
  52     }
  53
  54     {
  55         ns::value x;
  56         ns::value y(std::move(x)); // move
  57
  58         BOOST_TEST(x.w.value == 0);
  59         BOOST_TEST(y.w.value == 42);
  60
  61         ++y.w.value;
  62
  63         BOOST_TEST(x.w.value == 0);
  64         BOOST_TEST(y.w.value == 43);
  65
  66         y = std::move(x); // move assign
  67
  68         BOOST_TEST(x.w.value == 0);
  69         BOOST_TEST(y.w.value == 0);
  70     }
  71
  72     return boost::report_errors();
  73 }
  74
  75 #else
  76
  77 int main()
  78 {
  79 }
  80
  81 #endif