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// 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_POINTER_LIKE_HPP
#define SOL_POINTER_LIKE_HPP
#include <sol/base_traits.hpp>
#include <utility>
#include <type_traits>
#include <memory>
namespace sol {
namespace meta {
namespace meta_detail {
template <typename T>
using is_dereferenceable_test = decltype(*std::declval<T>());
template <typename T>
using is_explicitly_dereferenceable_test = decltype(std::declval<T>().operator*());
} // namespace meta_detail
template <typename T>
using is_pointer_like = std::integral_constant<bool,
!std::is_array_v<T> && (std::is_pointer_v<T> || is_detected_v<meta_detail::is_explicitly_dereferenceable_test, T>)>;
template <typename T>
constexpr inline bool is_pointer_like_v = is_pointer_like<T>::value;
} // namespace meta
namespace detail {
template <typename T>
auto unwrap(T&& item) -> decltype(std::forward<T>(item)) {
return std::forward<T>(item);
}
template <typename T>
T& unwrap(std::reference_wrapper<T> arg) {
return arg.get();
}
template <typename T>
inline decltype(auto) deref(T&& item) {
using Tu = meta::unqualified_t<T>;
if constexpr (meta::is_pointer_like_v<Tu>) {
return *std::forward<T>(item);
}
else {
return std::forward<T>(item);
}
}
template <typename T>
inline decltype(auto) deref_move_only(T&& item) {
using Tu = meta::unqualified_t<T>;
if constexpr (meta::is_pointer_like_v<Tu> && !std::is_pointer_v<Tu> && !std::is_copy_constructible_v<Tu>) {
return *std::forward<T>(item);
}
else {
return std::forward<T>(item);
}
}
template <typename T>
inline T* ptr(T& val) {
return std::addressof(val);
}
template <typename T>
inline T* ptr(std::reference_wrapper<T> val) {
return std::addressof(val.get());
}
template <typename T>
inline T* ptr(T* val) {
return val;
}
} // namespace detail
} // namespace sol
#endif // SOL_POINTER_LIKE_HPP
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