mixin.hpp

#ifndef BLUETOE_MIXIN_HPP
#define BLUETOE_MIXIN_HPP
 
#include <bluetoe/meta_tools.hpp>
 
namespace bluetoe {
    template < typename ... T >
    struct mixin;
 
    template < typename ... Options >
    class server;
 
    namespace details {
        struct mixin_meta_type {};
 
        template < typename MixinList >
        struct sum_mixins;
 
        template <>
        struct sum_mixins< std::tuple<> >
        {
            typedef std::tuple<> type;
        };
 
        template < typename ... Ts, typename ... Ms >
        struct sum_mixins< std::tuple< mixin< Ts... >, Ms... > >{
            typedef typename add_type<
                std::tuple< Ts... >,
                typename sum_mixins< std::tuple< Ms... > >::type >::type type;
        };
 
        template < typename List, typename Element >
        struct extract_service_mixins;
 
        template < typename ... Ms, typename ... Options >
        struct extract_service_mixins< std::tuple< Ms... >, bluetoe::service< Options... > >
        {
            typedef typename find_all_by_meta_type< mixin_meta_type, Options... >::type mixins;
            typedef typename add_type< mixins, std::tuple< Ms... > >::type              type;
        };
 
        template < typename ... Ms, typename T >
        struct extract_service_mixins< std::tuple< Ms... >, T >
        {
            typedef std::tuple< Ms... > type;
        };
 
        template < typename ... Options >
        struct collect_mixins
        {
            typedef typename find_all_by_meta_type< mixin_meta_type, Options... >::type         server_mixins;
            typedef typename fold< std::tuple< Options ... >, extract_service_mixins >::type    service_mixins;
            typedef typename add_type< server_mixins, service_mixins >::type                mixins;
            typedef typename sum_mixins< mixins >::type                                     type;
        };
 
    }
 
    template < typename ... T >
    struct mixin {
        struct meta_type :
            details::mixin_meta_type,
            details::valid_service_option_meta_type,
            details::valid_server_option_meta_type {};
 
    };
 
 
}
#endif