1#ifndef BOOST_DESCRIBE_DETAIL_MEMBERS_HPP_INCLUDED
2#define BOOST_DESCRIBE_DETAIL_MEMBERS_HPP_INCLUDED
3
4// Copyright 2020 Peter Dimov
5// Distributed under the Boost Software License, Version 1.0.
6// https://www.boost.org/LICENSE_1_0.txt
7
8#include <boost/describe/modifiers.hpp>
9#include <boost/describe/detail/pp_for_each.hpp>
10#include <boost/describe/detail/pp_utilities.hpp>
11#include <boost/describe/detail/list.hpp>
12#include <type_traits>
13
14namespace boost
15{
16namespace describe
17{
18namespace detail
19{
20
21template<class Pm> constexpr unsigned add_static_modifier( Pm )
22{
23 return std::is_member_pointer<Pm>::value? 0: mod_static;
24}
25
26template<class Pm> constexpr unsigned add_function_modifier( Pm )
27{
28 return std::is_member_function_pointer<Pm>::value || std::is_function< std::remove_pointer_t<Pm> >::value? mod_function: 0;
29}
30
31template<class D, unsigned M> struct member_descriptor
32{
33 static constexpr decltype(D::pointer()) pointer = D::pointer();
34 static constexpr decltype(D::name()) name = D::name();
35 static constexpr unsigned modifiers = M | add_static_modifier( D::pointer() ) | add_function_modifier( D::pointer() );
36};
37
38#ifndef __cpp_inline_variables
39template<class D, unsigned M> constexpr decltype(D::pointer()) member_descriptor<D, M>::pointer;
40template<class D, unsigned M> constexpr decltype(D::name()) member_descriptor<D, M>::name;
41template<class D, unsigned M> constexpr unsigned member_descriptor<D, M>::modifiers;
42#endif
43
44template<unsigned M, class... T> auto member_descriptor_fn_impl( int, T... )
45{
46 return list<member_descriptor<T, M>...>();
47}
48
49template<class C, class F> constexpr auto mfn( F C::* p ) { return p; }
50template<class C, class F> constexpr auto mfn( F * p ) { return p; }
51
52#define BOOST_DESCRIBE_MEMBER_IMPL(C, m) , []{ struct _boost_desc { \
53 static constexpr auto pointer() noexcept { return BOOST_DESCRIBE_PP_POINTER(C, m); } \
54 static constexpr auto name() noexcept { return BOOST_DESCRIBE_PP_NAME(m); } }; return _boost_desc(); }()
55
56#if defined(_MSC_VER) && !defined(__clang__)
57
58#define BOOST_DESCRIBE_PUBLIC_MEMBERS(C, ...) inline auto boost_public_member_descriptor_fn( C** ) \
59{ return boost::describe::detail::member_descriptor_fn_impl<boost::describe::mod_public>( 0 BOOST_DESCRIBE_PP_FOR_EACH(BOOST_DESCRIBE_MEMBER_IMPL, C, __VA_ARGS__) ); }
60
61#define BOOST_DESCRIBE_PROTECTED_MEMBERS(C, ...) inline auto boost_protected_member_descriptor_fn( C** ) \
62{ return boost::describe::detail::member_descriptor_fn_impl<boost::describe::mod_protected>( 0 BOOST_DESCRIBE_PP_FOR_EACH(BOOST_DESCRIBE_MEMBER_IMPL, C, __VA_ARGS__) ); }
63
64#define BOOST_DESCRIBE_PRIVATE_MEMBERS(C, ...) inline auto boost_private_member_descriptor_fn( C** ) \
65{ return boost::describe::detail::member_descriptor_fn_impl<boost::describe::mod_private>( 0 BOOST_DESCRIBE_PP_FOR_EACH(BOOST_DESCRIBE_MEMBER_IMPL, C, __VA_ARGS__) ); }
66
67#else
68
69#define BOOST_DESCRIBE_PUBLIC_MEMBERS(C, ...) inline auto boost_public_member_descriptor_fn( C** ) \
70{ return boost::describe::detail::member_descriptor_fn_impl<boost::describe::mod_public>( 0 BOOST_DESCRIBE_PP_FOR_EACH(BOOST_DESCRIBE_MEMBER_IMPL, C, ##__VA_ARGS__) ); }
71
72#define BOOST_DESCRIBE_PROTECTED_MEMBERS(C, ...) inline auto boost_protected_member_descriptor_fn( C** ) \
73{ return boost::describe::detail::member_descriptor_fn_impl<boost::describe::mod_protected>( 0 BOOST_DESCRIBE_PP_FOR_EACH(BOOST_DESCRIBE_MEMBER_IMPL, C, ##__VA_ARGS__) ); }
74
75#define BOOST_DESCRIBE_PRIVATE_MEMBERS(C, ...) inline auto boost_private_member_descriptor_fn( C** ) \
76{ return boost::describe::detail::member_descriptor_fn_impl<boost::describe::mod_private>( 0 BOOST_DESCRIBE_PP_FOR_EACH(BOOST_DESCRIBE_MEMBER_IMPL, C, ##__VA_ARGS__) ); }
77
78#endif
79
80} // namespace detail
81} // namespace describe
82} // namespace boost
83
84#endif // #ifndef BOOST_DESCRIBE_DETAIL_MEMBERS_HPP_INCLUDED
85

source code of boost/libs/describe/include/boost/describe/detail/members.hpp