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Refactor mp_append slightly

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This commit is contained in:
Peter Dimov
2023-05-16 03:19:32 +03:00
parent 64532c4792
commit 64ed9449cb
1 changed files with 48 additions and 29 deletions
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77
include/boost/mp11/detail/mp_append.hpp
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@@ -24,6 +24,8 @@ namespace mp11
namespace detail
{
// append_type_lists
template<class... L> struct mp_append_impl;
#if BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, <= 1800 )
@@ -155,6 +157,40 @@ template<
using type = typename mp_append_impl<prefix, Lr...>::type;
};
#if BOOST_MP11_WORKAROUND( BOOST_MP11_CUDA, >= 9000000 && BOOST_MP11_CUDA < 10000000 )
template<class... L>
struct mp_append_impl_cuda_workaround
{
using type = mp_if_c<(sizeof...(L) > 111), mp_quote<append_inf_impl>, mp_if_c<(sizeof...(L) > 11), mp_quote<append_111_impl>, mp_quote<append_11_impl> > >;
};
template<class... L> struct mp_append_impl: mp_append_impl_cuda_workaround<L...>::type::template fn<L...>
{
};
#else
template<class... L> struct mp_append_impl:
mp_cond<
mp_bool<(sizeof...(L) > 111)>, mp_quote<append_inf_impl>,
mp_bool<(sizeof...(L) > 11)>, mp_quote<append_111_impl>,
mp_true, mp_quote<append_11_impl>
>::template fn<L...>
{
};
#endif // #if BOOST_MP11_WORKAROUND( BOOST_MP11_CUDA, >= 9000000 && BOOST_MP11_CUDA < 10000000 )
#endif // #if BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, <= 1800 )
struct append_type_lists
{
template<class... L> using fn = typename mp_append_impl<L...>::type;
};
// append_value_lists
#if defined(BOOST_MP11_HAS_TEMPLATE_AUTO)
template<class... L> struct append_value_impl
@@ -191,41 +227,24 @@ struct append_value_impl<L1<A1...>, L2<A2...>, L3<A3...>, L4<A4...>, L5<A5...>,
using type = typename append_value_impl<L1<A1..., A2..., A3..., A4..., A5...>, Lr...>::type;
};
#endif
#if BOOST_MP11_WORKAROUND( BOOST_MP11_CUDA, >= 9000000 && BOOST_MP11_CUDA < 10000000 )
template<class... L>
struct mp_append_impl_cuda_workaround
struct append_value_lists
{
using type = mp_if_c<(sizeof...(L) > 111), mp_quote<append_inf_impl>, mp_if_c<(sizeof...(L) > 11), mp_quote<append_111_impl>, mp_quote<append_11_impl> > >;
template<class... L> using fn = typename append_value_impl<L...>::type;
};
template<class... L> struct mp_append_impl: mp_append_impl_cuda_workaround<L...>::type::template fn<L...>
{
};
#else
template<class... L> struct mp_append_impl:
mp_cond<
#if defined(BOOST_MP11_HAS_TEMPLATE_AUTO)
mp_bool<(sizeof...(L) > 0 && sizeof...(L) == mp_count_if<mp_list<L...>, mp_is_value_list>::value)>, mp_quote<append_value_impl>,
#endif
mp_bool<(sizeof...(L) > 111)>, mp_quote<append_inf_impl>,
mp_bool<(sizeof...(L) > 11)>, mp_quote<append_111_impl>,
mp_true, mp_quote<append_11_impl>
>::template fn<L...>
{
};
#endif
#endif
#endif // #if defined(BOOST_MP11_HAS_TEMPLATE_AUTO)
} // namespace detail
template<class... L> using mp_append = typename detail::mp_append_impl<L...>::type;
#if defined(BOOST_MP11_HAS_TEMPLATE_AUTO)
template<class... L> using mp_append = typename mp_if_c<(sizeof...(L) > 0 && sizeof...(L) == mp_count_if<mp_list<L...>, mp_is_value_list>::value), detail::append_value_lists, detail::append_type_lists>::template fn<L...>;
#else
template<class... L> using mp_append = detail::append_type_lists::fn<L...>;
#endif
} // namespace mp11
} // namespace boost