51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
#ifndef BOOST_DESCRIBE_BASES_HPP_INCLUDED
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#define BOOST_DESCRIBE_BASES_HPP_INCLUDED
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// Copyright 2020, 2021 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/describe/modifiers.hpp>
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#include <boost/describe/detail/void_t.hpp>
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#include <boost/describe/detail/config.hpp>
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#if defined(BOOST_DESCRIBE_CXX11)
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#include <boost/mp11/algorithm.hpp>
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#include <type_traits>
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namespace boost
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{
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namespace describe
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{
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namespace detail
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{
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template<class T> using _describe_bases = decltype( boost_base_descriptor_fn( static_cast<T**>(0) ) );
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template<unsigned M> struct base_filter
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{
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template<class T> using fn = mp11::mp_bool< ( M & mod_any_access & T::modifiers ) != 0 >;
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};
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template<class T, class En = void> struct has_describe_bases: std::false_type
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{
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};
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template<class T> struct has_describe_bases<T, void_t<_describe_bases<T>>>: std::true_type
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{
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};
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} // namespace detail
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template<class T, unsigned M> using describe_bases = mp11::mp_copy_if_q<detail::_describe_bases<T>, detail::base_filter<M>>;
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template<class T> using has_describe_bases = detail::has_describe_bases<T>;
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} // namespace describe
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} // namespace boost
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#endif // !defined(BOOST_DESCRIBE_CXX11)
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#endif // #ifndef BOOST_DESCRIBE_BASES_HPP_INCLUDED
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