63e88f80
 Hu Chunming
提交三方库
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#ifndef BOOST_DESCRIBE_BASES_HPP_INCLUDED
#define BOOST_DESCRIBE_BASES_HPP_INCLUDED
// Copyright 2020, 2021 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/describe/modifiers.hpp>
#include <boost/describe/detail/void_t.hpp>
#include <boost/describe/detail/config.hpp>
#if defined(BOOST_DESCRIBE_CXX11)
#include <boost/mp11/algorithm.hpp>
#include <type_traits>
namespace boost
{
namespace describe
{
namespace detail
{
template<class T> using _describe_bases = decltype( boost_base_descriptor_fn( static_cast<T**>(0) ) );
template<unsigned M> struct base_filter
{
template<class T> using fn = mp11::mp_bool< ( M & mod_any_access & T::modifiers ) != 0 >;
};
template<class T, class En = void> struct has_describe_bases: std::false_type
{
};
template<class T> struct has_describe_bases<T, void_t<_describe_bases<T>>>: std::true_type
{
};
} // namespace detail
template<class T, unsigned M> using describe_bases = mp11::mp_copy_if_q<detail::_describe_bases<T>, detail::base_filter<M>>;
template<class T> using has_describe_bases = detail::has_describe_bases<T>;
} // namespace describe
} // namespace boost
#endif // !defined(BOOST_DESCRIBE_CXX11)
#endif // #ifndef BOOST_DESCRIBE_BASES_HPP_INCLUDED
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