mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-25 21:35:41 +00:00
53 lines
1.7 KiB
C++
53 lines
1.7 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_POP_BACK_HPP
|
|
#define SPROUT_TUPLE_OPERATION_POP_BACK_HPP
|
|
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/index_tuple/metafunction.hpp>
|
|
#include <sprout/tuple/tuple.hpp>
|
|
#include <sprout/tuple/functions.hpp>
|
|
#include <sprout/type/operation/pop_back.hpp>
|
|
|
|
namespace sprout {
|
|
namespace tuples {
|
|
namespace results {
|
|
//
|
|
// pop_back
|
|
//
|
|
template<typename Tuple>
|
|
struct pop_back
|
|
: public sprout::types::pop_back<Tuple>
|
|
{};
|
|
} // namespace results
|
|
|
|
namespace detail {
|
|
template<typename Result, typename Tuple, sprout::index_t... Indexes>
|
|
inline SPROUT_CONSTEXPR Result
|
|
pop_back_impl(Tuple const& t, sprout::index_tuple<Indexes...>) {
|
|
return sprout::tuples::remake<Result>(
|
|
t,
|
|
sprout::tuples::get<Indexes>(t)...
|
|
);
|
|
}
|
|
} // namespace detail
|
|
//
|
|
// pop_back
|
|
//
|
|
template<typename Tuple>
|
|
inline SPROUT_CONSTEXPR typename sprout::tuples::results::pop_back<Tuple>::type
|
|
pop_back(Tuple const& t) {
|
|
return sprout::tuples::detail::pop_back_impl<typename sprout::tuples::results::pop_back<Tuple>::type>(
|
|
t,
|
|
sprout::make_index_tuple<sprout::tuples::tuple_size<Tuple>::value - 1>::make()
|
|
);
|
|
}
|
|
} // namespace tuples
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_TUPLE_OPERATION_POP_BACK_HPP
|