Sprout/sprout/tuple/operation/push_back.hpp
2015-01-10 19:13:57 +09:00

56 lines
1.9 KiB
C++

/*=============================================================================
Copyright (c) 2011-2015 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_TUPLE_OPERATION_PUSH_BACK_HPP
#define SPROUT_TUPLE_OPERATION_PUSH_BACK_HPP
#include <sprout/config.hpp>
#include <sprout/index_tuple/metafunction.hpp>
#include <sprout/tuple/tuple.hpp>
#include <sprout/tuple/functions.hpp>
#include <sprout/tuple/indexes.hpp>
#include <sprout/type/operation/push_back.hpp>
namespace sprout {
namespace tuples {
namespace results {
//
// push_back
//
template<typename Tuple, typename... Args>
struct push_back
: public sprout::types::push_back<Tuple, Args...>
{};
} // namespace results
namespace detail {
template<typename Result, typename Tuple, typename... Args, sprout::index_t... Indexes>
inline SPROUT_CONSTEXPR Result
push_back_impl(Tuple const& t, sprout::index_tuple<Indexes...>, Args const&... args) {
return sprout::tuples::remake<Result>(
t,
sprout::tuples::get<Indexes>(t)...,
args...
);
}
} // namespace detail
//
// push_back
//
template<typename Tuple, typename... Args>
inline SPROUT_CONSTEXPR typename sprout::tuples::results::push_back<Tuple, Args...>::type
push_back(Tuple const& t, Args const&... args) {
return sprout::tuples::detail::push_back_impl<typename sprout::tuples::results::push_back<Tuple, Args...>::type>(
t,
sprout::tuple_indexes<Tuple>::make(),
args...
);
}
} // namespace tuples
} // namespace sprout
#endif // #ifndef SPROUT_TUPLE_OPERATION_PUSH_BACK_HPP