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https://github.com/bolero-MURAKAMI/Sprout.git
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56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
#ifndef SPROUT_TUPLE_OPERATION_PUSH_FRONT_HPP
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#define SPROUT_TUPLE_OPERATION_PUSH_FRONT_HPP
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#include <cstddef>
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#include <sprout/config.hpp>
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#include <sprout/index_tuple.hpp>
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#include <sprout/tuple/tuple.hpp>
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#include <sprout/tuple/functions.hpp>
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#include <sprout/type/operation/push_front.hpp>
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namespace sprout {
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namespace tuples {
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namespace result_of {
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//
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// push_front
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//
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template<typename Tuple, typename T>
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struct push_front
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: public sprout::types::push_front<Tuple, T>
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{};
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} // namespace result_of
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namespace detail {
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template<typename Result, typename Tuple, typename T, std::ptrdiff_t... Indexes>
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SPROUT_CONSTEXPR inline Result push_front_impl(
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Tuple const& t,
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T const& v,
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sprout::index_tuple<Indexes...>
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)
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{
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return sprout::tuples::remake_clone<Result>(
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t,
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v,
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sprout::tuples::get<Indexes>(t)...
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);
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}
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} // namespace detail
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//
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// push_front
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//
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template<typename Tuple, typename T>
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SPROUT_CONSTEXPR inline typename sprout::tuples::result_of::push_front<Tuple, T>::type push_front(
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Tuple const& t,
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T const& v
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)
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{
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return sprout::tuples::detail::push_front_impl<typename sprout::tuples::result_of::push_front<Tuple, T>::type>(
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t,
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v,
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typename sprout::index_range<0, sprout::tuples::tuple_size<Tuple>::value>::type()
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);
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}
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} // namespace tuples
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} // namespace sprout
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#endif // #ifndef SPROUT_TUPLE_OPERATION_PUSH_FRONT_HPP
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