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| Commit | Line | Data |
|---|---|---|
| 1e59de90 TL |
1 | #ifndef BOOST_DESCRIBE_ENUMERATORS_HPP_INCLUDED |
| 2 | #define BOOST_DESCRIBE_ENUMERATORS_HPP_INCLUDED | |
| 3 | ||
| 4 | // Copyright 2020, 2021 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/detail/void_t.hpp> | |
| 9 | #include <boost/describe/detail/config.hpp> | |
| 10 | ||
| 11 | #if defined(BOOST_DESCRIBE_CXX11) | |
| 12 | ||
| 13 | #include <type_traits> | |
| 14 | ||
| 15 | namespace boost | |
| 16 | { | |
| 17 | namespace describe | |
| 18 | { | |
| 19 | ||
| 20 | // describe_enumerators<E> | |
| 21 | ||
| 22 | template<class E> using describe_enumerators = decltype( boost_enum_descriptor_fn( static_cast<E**>(0) ) ); | |
| 23 | ||
| 24 | // has_describe_enumerators<E> | |
| 25 | ||
| 26 | namespace detail | |
| 27 | { | |
| 28 | ||
| 29 | template<class E, class En = void> struct has_describe_enumerators: std::false_type | |
| 30 | { | |
| 31 | }; | |
| 32 | ||
| 33 | template<class E> struct has_describe_enumerators<E, void_t<describe_enumerators<E>>>: std::true_type | |
| 34 | { | |
| 35 | }; | |
| 36 | ||
| 37 | } // namespace detail | |
| 38 | ||
| 39 | template<class E> using has_describe_enumerators = detail::has_describe_enumerators<E>; | |
| 40 | ||
| 41 | } // namespace describe | |
| 42 | } // namespace boost | |
| 43 | ||
| 44 | #endif // defined(BOOST_DESCRIBE_CXX11) | |
| 45 | ||
| 46 | #endif // #ifndef BOOST_DESCRIBE_ENUMERATORS_HPP_INCLUDED |