h2-mod/deps/sol2/include/sol/tie.hpp
2024-03-07 03:33:59 -05:00

99 lines
3.3 KiB
C++

// sol2
// The MIT License (MIT)
// Copyright (c) 2013-2022 Rapptz, ThePhD and contributors
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef SOL_TIE_HPP
#define SOL_TIE_HPP
#include <sol/traits.hpp>
namespace sol {
namespace detail {
template <typename T>
struct is_speshul : std::false_type { };
} // namespace detail
template <typename T>
struct tie_size : std::tuple_size<T> { };
template <typename T>
struct is_tieable : std::integral_constant<bool, (::sol::tie_size<T>::value > 0)> { };
template <typename... Tn>
struct tie_t : public std::tuple<std::add_lvalue_reference_t<Tn>...> {
private:
typedef std::tuple<std::add_lvalue_reference_t<Tn>...> base_t;
template <typename T>
void set(std::false_type, T&& target) {
std::get<0>(*this) = std::forward<T>(target);
}
template <typename T>
void set(std::true_type, T&& target) {
typedef tie_size<meta::unqualified_t<T>> value_size;
typedef tie_size<std::tuple<Tn...>> tie_size;
typedef meta::conditional_t<(value_size::value < tie_size::value), value_size, tie_size> indices_size;
typedef std::make_index_sequence<indices_size::value> indices;
set_extra(detail::is_speshul<meta::unqualified_t<T>>(), indices(), std::forward<T>(target));
}
template <std::size_t... I, typename T>
void set_extra(std::true_type, std::index_sequence<I...>, T&& target) {
using std::get;
(void)detail::swallow { 0, (get<I>(static_cast<base_t&>(*this)) = get<I>(types<Tn...>(), target), 0)..., 0 };
}
template <std::size_t... I, typename T>
void set_extra(std::false_type, std::index_sequence<I...>, T&& target) {
using std::get;
(void)detail::swallow { 0, (get<I>(static_cast<base_t&>(*this)) = get<I>(target), 0)..., 0 };
}
public:
using base_t::base_t;
template <typename T>
tie_t& operator=(T&& value) {
typedef is_tieable<meta::unqualified_t<T>> tieable;
set(tieable(), std::forward<T>(value));
return *this;
}
};
template <typename... Tn>
struct tie_size<tie_t<Tn...>> : std::tuple_size<std::tuple<Tn...>> { };
namespace adl_barrier_detail {
template <typename... Tn>
inline tie_t<std::remove_reference_t<Tn>...> tie(Tn&&... argn) {
return tie_t<std::remove_reference_t<Tn>...>(std::forward<Tn>(argn)...);
}
} // namespace adl_barrier_detail
using namespace adl_barrier_detail;
} // namespace sol
#endif // SOL_TIE_HPP