multiple_inheritance.hpp

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#ifndef BOOST_MPL11_DETAIL_AT_KEY_MULTIPLE_INHERITANCE_HPP
#define BOOST_MPL11_DETAIL_AT_KEY_MULTIPLE_INHERITANCE_HPP

#include <boost/mpl11/detail/inherit.hpp>
#include <boost/mpl11/detail/pair.hpp>


namespace boost { namespace mpl11 { namespace detail { namespace at_key {
    template <typename key, typename value>
    value multi_lookup_impl(pair<key, value>*);

    template <typename key, typename ...pairs>
    using multiple_inheritance = decltype(
        // Disable ADL or the template arguments of the pairs will
        // be instantiated.
        at_key::multi_lookup_impl<key>((inherit<pairs...>*)nullptr)
    );
}}}} // end namespace boost::mpl11::detail::at_key

#endif // !BOOST_MPL11_DETAIL_AT_KEY_MULTIPLE_INHERITANCE_HPP