1// Copyright 2020 Peter Dimov
2// Distributed under the Boost Software License, Version 1.0.
3// https://www.boost.org/LICENSE_1_0.txt
4
5#include <boost/describe/members.hpp>
6#include <boost/describe/class.hpp>
7#include <boost/core/lightweight_test.hpp>
8#include <boost/config.hpp>
9#include <boost/config/workaround.hpp>
10
11struct A
12{
13 int m1;
14};
15
16BOOST_DESCRIBE_STRUCT(A, (), (m1))
17
18struct B1: public virtual A
19{
20 int m2;
21};
22
23BOOST_DESCRIBE_STRUCT(B1, (A), (m2))
24
25struct B2: public virtual A
26{
27 int m2;
28};
29
30BOOST_DESCRIBE_STRUCT(B2, (A), (m2))
31
32struct C: public B1, public B2
33{
34 int m2;
35};
36
37BOOST_DESCRIBE_STRUCT(C, (B1, B2), (m2))
38
39#if !defined(BOOST_DESCRIBE_CXX14)
40
41#include <boost/config/pragma_message.hpp>
42
43BOOST_PRAGMA_MESSAGE("Skipping test because C++14 is not available")
44int main() {}
45
46#else
47
48#include <boost/mp11.hpp>
49
50int main()
51{
52 using namespace boost::describe;
53 using namespace boost::mp11;
54
55 {
56 using L = describe_members<C, mod_public>;
57
58 BOOST_TEST_EQ( mp_size<L>::value, 1 );
59
60 using D1 = mp_at_c<L, 0>;
61
62#if !BOOST_WORKAROUND(BOOST_MSVC, < 1940)
63// https://developercommunity.visualstudio.com/content/problem/1186002/constexpr-pointer-to-member-has-incorrect-value.html
64 BOOST_TEST( D1::pointer == &C::m2 );
65#endif
66 BOOST_TEST_CSTR_EQ( D1::name, "m2" );
67 BOOST_TEST_EQ( D1::modifiers, mod_public );
68 }
69
70 {
71 using L = describe_members<C, mod_public | mod_inherited>;
72
73 BOOST_TEST_EQ( mp_size<L>::value, 2 );
74
75 using D1 = mp_at_c<L, 0>;
76 using D2 = mp_at_c<L, 1>;
77
78 BOOST_TEST( D1::pointer == &C::A::m1 );
79 BOOST_TEST_CSTR_EQ( D1::name, "m1" );
80 BOOST_TEST_EQ( D1::modifiers, mod_public | mod_inherited );
81
82#if !BOOST_WORKAROUND(BOOST_MSVC, < 1940)
83 BOOST_TEST( D2::pointer == &C::m2 );
84#endif
85 BOOST_TEST_CSTR_EQ( D2::name, "m2" );
86 BOOST_TEST_EQ( D2::modifiers, mod_public );
87 }
88
89 return boost::report_errors();
90}
91
92#endif // !defined(BOOST_DESCRIBE_CXX14)
93

source code of boost/libs/describe/test/members_test7.cpp