Sprout/sprout/tuple/operation/append_back.hpp
2012-05-14 11:33:36 +09:00

57 lines
1.7 KiB
C++

#ifndef SPROUT_TUPLE_OPERATION_APPEND_BACK_HPP
#define SPROUT_TUPLE_OPERATION_APPEND_BACK_HPP
#include <sprout/config.hpp>
#include <sprout/index_tuple.hpp>
#include <sprout/tuple/tuple.hpp>
#include <sprout/tuple/functions.hpp>
#include <sprout/type/operation/append_back.hpp>
namespace sprout {
namespace tuples {
namespace result_of {
//
// append_back
//
template<typename Tuple, typename InputTuple>
struct append_back
: public sprout::types::append_back<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_back_impl(
Tuple const& t,
InputTuple const& input,
sprout::index_tuple<Indexes1...>,
sprout::index_tuple<Indexes2...>
)
{
return sprout::tuples::remake<Result>(
t,
sprout::tuples::get<Indexes1>(t)...,
sprout::tuples::get<Indexes2>(input)...
);
}
} // namespace detail
//
// append_back
//
template<typename Tuple, typename InputTuple>
inline SPROUT_CONSTEXPR typename sprout::tuples::result_of::append_back<Tuple, InputTuple>::type append_back(
Tuple const& t,
InputTuple const& input
)
{
return sprout::tuples::detail::append_back_impl<typename sprout::tuples::result_of::append_back<Tuple, InputTuple>::type>(
t,
input,
sprout::index_range<0, sprout::tuples::tuple_size<Tuple>::value>::make(),
sprout::index_range<0, sprout::tuples::tuple_size<InputTuple>::value>::make()
);
}
} // namespace tuples
} // namespace sprout
#endif // #ifndef SPROUT_TUPLE_OPERATION_APPEND_BACK_HPP