Sprout/sprout/tuple/operation/push_back.hpp
2012-07-18 21:44:31 +09:00

55 lines
1.5 KiB
C++

#ifndef SPROUT_TUPLE_OPERATION_PUSH_BACK_HPP
#define SPROUT_TUPLE_OPERATION_PUSH_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/push_back.hpp>
namespace sprout {
namespace tuples {
namespace result_of {
//
// push_back
//
template<typename Tuple, typename... Args>
struct push_back
: public sprout::types::push_back<Tuple, Args...>
{};
} // namespace result_of
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::result_of::push_back<Tuple, Args...>::type push_back(
Tuple const& t,
Args const&... args
)
{
return sprout::tuples::detail::push_back_impl<typename sprout::tuples::result_of::push_back<Tuple, Args...>::type>(
t,
sprout::index_range<0, sprout::tuples::tuple_size<Tuple>::value>::make(),
args...
);
}
} // namespace tuples
} // namespace sprout
#endif // #ifndef SPROUT_TUPLE_OPERATION_PUSH_BACK_HPP