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add types::tuple_cat

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This commit is contained in:
bolero-MURAKAMI 2014-08-05 18:05:12 +09:00
parent b25f91f954
commit 976288ac50
2 changed files with 63 additions and 0 deletions
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1
sprout/type/operation.hpp
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@ -9,6 +9,7 @@
#define SPROUT_TYPE_OPERATION_HPP
#include <sprout/config.hpp>
#include <sprout/type/operation/tuple_cat.hpp>
#include <sprout/type/operation/size.hpp>
#include <sprout/type/operation/empty.hpp>
#include <sprout/type/operation/at.hpp>

62
sprout/type/operation/tuple_cat.hpp Normal file
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@ -0,0 +1,62 @@
/*=============================================================================
Copyright (c) 2011-2014 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
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)
=============================================================================*/
#ifndef SPROUT_TYPE_OPERATION_TUPLE_CAT_HPP
#define SPROUT_TYPE_OPERATION_TUPLE_CAT_HPP
#include <sprout/config.hpp>
#include <sprout/type_traits/identity.hpp>
#include <sprout/index_tuple.hpp>
#include <sprout/type/joint_types.hpp>
#include <sprout/type/type_tuple.hpp>
#include <sprout/type/tuple.hpp>
namespace sprout {
namespace types {
//
// tuple_cat
//
namespace detail {
template<typename Tuples, typename LIndexTuple, typename RIndexTuple>
struct tuple_cat_impl;
template<typename Tuples, sprout::index_t... LIndexes, sprout::index_t... RIndexes>
struct tuple_cat_impl<Tuples, sprout::index_tuple<LIndexes...>, sprout::index_tuple<RIndexes...> >
: public sprout::types::joint_types<
typename sprout::types::detail::tuple_cat_impl<
sprout::types::type_tuple<typename sprout::types::tuple_element<LIndexes, Tuples>::type...>,
typename sprout::index_range<0, sizeof...(LIndexes) / 2>::type,
typename sprout::index_range<sizeof...(LIndexes) / 2, sizeof...(LIndexes)>::type
>::type
>::template apply<
typename sprout::types::detail::tuple_cat_impl<
sprout::types::type_tuple<typename sprout::types::tuple_element<RIndexes, Tuples>::type...>,
typename sprout::index_range<0, sizeof...(RIndexes) / 2>::type,
typename sprout::index_range<sizeof...(RIndexes) / 2, sizeof...(RIndexes)>::type
>::type
>
{};
template<typename Tuples>
struct tuple_cat_impl<Tuples, sprout::index_tuple<>, sprout::index_tuple<0> >
: public sprout::types::tuple_element<0, Tuples>
{};
template<typename Tuples>
struct tuple_cat_impl<Tuples, sprout::index_tuple<>, sprout::index_tuple<> >
: public sprout::identity<sprout::types::type_tuple<> >
{};
} // namespace detail
template<typename... Tuples>
struct tuple_cat
: public sprout::types::detail::tuple_cat_impl<
sprout::types::type_tuple<Tuples...>,
typename sprout::index_range<0, sizeof...(Tuples) / 2>::type,
typename sprout::index_range<sizeof...(Tuples) / 2, sizeof...(Tuples)>::type
>
{};
} // namespace types
} // namespace sprout
#endif // #ifndef SPROUT_TYPE_OPERATION_TUPLE_CAT_HPP