1 /*=============================================================================
2     Copyright (c) 2016,2018 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 #include <boost/detail/lightweight_test.hpp>
8 #include <boost/fusion/adapted/struct/define_assoc_struct.hpp>
9 #include <utility>
10 
11 struct key_type;
12 struct wrapper
13 {
14     int value;
15 
wrapperwrapper16     wrapper() : value(42) {}
wrapperwrapper17     wrapper(wrapper&& other) : value(other.value) { other.value = 0; }
wrapperwrapper18     wrapper(wrapper const& other) : value(other.value) {}
19 
operator =wrapper20     wrapper& operator=(wrapper&& other) { value = other.value; other.value = 0; return *this; }
operator =wrapper21     wrapper& operator=(wrapper const& other) { value = other.value; return *this; }
22 };
23 BOOST_FUSION_DEFINE_ASSOC_STRUCT((ns), value, (wrapper, w, key_type))
24 
main()25 int main()
26 {
27     using namespace boost::fusion;
28 
29     {
30         ns::value x;
31         ns::value y(x); // copy
32 
33         BOOST_TEST(x.w.value == 42);
34         BOOST_TEST(y.w.value == 42);
35 
36         ++y.w.value;
37 
38         BOOST_TEST(x.w.value == 42);
39         BOOST_TEST(y.w.value == 43);
40 
41         y = x; // copy assign
42 
43         BOOST_TEST(x.w.value == 42);
44         BOOST_TEST(y.w.value == 42);
45     }
46 
47     {
48         ns::value x;
49         ns::value y(std::move(x)); // move
50 
51         BOOST_TEST(x.w.value == 0);
52         BOOST_TEST(y.w.value == 42);
53 
54         ++y.w.value;
55 
56         BOOST_TEST(x.w.value == 0);
57         BOOST_TEST(y.w.value == 43);
58 
59         y = std::move(x); // move assign
60 
61         BOOST_TEST(x.w.value == 0);
62         BOOST_TEST(y.w.value == 0);
63     }
64 
65     return boost::report_errors();
66 }
67 
68