mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2013 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_APPEND_FRONT_HPP
|
|
#define SPROUT_TUPLE_OPERATION_APPEND_FRONT_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/append_front.hpp>
|
|
|
|
namespace sprout {
|
|
namespace tuples {
|
|
namespace result_of {
|
|
//
|
|
// append_front
|
|
//
|
|
template<typename Tuple, typename InputTuple>
|
|
struct append_front
|
|
: public sprout::types::append_front<Tuple, InputTuple>
|
|
{};
|
|
} // namespace result_of
|
|
|
|
namespace detail {
|
|
template<typename Result, typename Tuple, typename InputTuple, sprout::index_t... Indexes1, sprout::index_t... Indexes2>
|
|
inline SPROUT_CONSTEXPR Result
|
|
append_front_impl(
|
|
Tuple const& t, InputTuple const& input,
|
|
sprout::index_tuple<Indexes1...>, sprout::index_tuple<Indexes2...>
|
|
)
|
|
{
|
|
return sprout::tuples::remake<Result>(
|
|
t,
|
|
sprout::tuples::get<Indexes2>(input)...,
|
|
sprout::tuples::get<Indexes1>(t)...
|
|
);
|
|
}
|
|
} // namespace detail
|
|
//
|
|
// append_front
|
|
//
|
|
template<typename Tuple, typename InputTuple>
|
|
inline SPROUT_CONSTEXPR typename sprout::tuples::result_of::append_front<Tuple, InputTuple>::type
|
|
append_front(Tuple const& t, InputTuple const& input) {
|
|
return sprout::tuples::detail::append_front_impl<typename sprout::tuples::result_of::append_front<Tuple, InputTuple>::type>(
|
|
t, input,
|
|
sprout::tuple_indexes<Tuple>::make(),
|
|
sprout::tuple_indexes<InputTuple>::make()
|
|
);
|
|
}
|
|
} // namespace tuples
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_TUPLE_OPERATION_APPEND_FRONT_HPP
|