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Put mp_rename, mp_apply into their own file

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Dmitry Arkhipov
2021-07-26 21:08:29 +03:00
parent 7b854477f8
commit 8cd25cc950
2 changed files with 47 additions and 20 deletions
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43
include/boost/mp11/detail/mp_rename.hpp Normal file
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@@ -0,0 +1,43 @@
#ifndef BOOST_MP11_DETAIL_MP_RENAME_HPP_INCLUDED
#define BOOST_MP11_DETAIL_MP_RENAME_HPP_INCLUDED
// Copyright 2015-2021 Peter Dimov.
//
// Distributed under the Boost Software License, Version 1.0.
//
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/mp11/detail/config.hpp>
namespace boost
{
namespace mp11
{
// mp_rename<L, B>
namespace detail
{
template<class A, template<class...> class B> struct mp_rename_impl
{
// An error "no type named 'type'" here means that the first argument to mp_rename is not a list
};
template<template<class...> class A, class... T, template<class...> class B> struct mp_rename_impl<A<T...>, B>
{
using type = B<T...>;
};
} // namespace detail
template<class A, template<class...> class B> using mp_rename = typename detail::mp_rename_impl<A, B>::type;
template<template<class...> class F, class L> using mp_apply = typename detail::mp_rename_impl<L, F>::type;
template<class Q, class L> using mp_apply_q = typename detail::mp_rename_impl<L, Q::template fn>::type;
} // namespace mp11
} // namespace boost
#endif // #ifndef BOOST_MP11_DETAIL_MP_RENAME_HPP_INCLUDED

24
include/boost/mp11/list.hpp
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@@ -13,6 +13,7 @@
#include <boost/mp11/detail/mp_is_list.hpp>
#include <boost/mp11/detail/mp_append.hpp>
#include <boost/mp11/detail/mp_front.hpp>
#include <boost/mp11/detail/mp_rename.hpp>
#include <boost/mp11/detail/config.hpp>
#include <type_traits>
@@ -169,26 +170,9 @@ template<template<class...> class L, class... U, class... T> struct mp_push_back
template<class L, class... T> using mp_push_back = typename detail::mp_push_back_impl<L, T...>::type;
// mp_rename<L, B>
namespace detail
{
template<class A, template<class...> class B> struct mp_rename_impl
{
// An error "no type named 'type'" here means that the first argument to mp_rename is not a list
};
template<template<class...> class A, class... T, template<class...> class B> struct mp_rename_impl<A<T...>, B>
{
using type = B<T...>;
};
} // namespace detail
template<class A, template<class...> class B> using mp_rename = typename detail::mp_rename_impl<A, B>::type;
template<template<class...> class F, class L> using mp_apply = typename detail::mp_rename_impl<L, F>::type;
template<class Q, class L> using mp_apply_q = typename detail::mp_rename_impl<L, Q::template fn>::type;
// mp_apply<F, L>
// mp_apply_q<Q, L>
// in detail/mp_rename.hpp
// mp_replace_front<L, T>
namespace detail