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-// The MIT License (MIT)
-
-// Copyright (c) 2013-2016 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_PROPERTY_HPP
-#define SOL_PROPERTY_HPP
-
-namespace sol {
-
- struct no_prop { };
-
- template <typename R, typename W>
- struct property_wrapper {
- typedef std::integral_constant<bool, !std::is_void<R>::value> can_read;
- typedef std::integral_constant<bool, !std::is_void<W>::value> can_write;
- typedef std::conditional_t<can_read::value, R, no_prop> Read;
- typedef std::conditional_t<can_write::value, W, no_prop> Write;
- Read read;
- Write write;
-
- template <typename Rx, typename Wx>
- property_wrapper(Rx&& r, Wx&& w) : read(std::forward<Rx>(r)), write(std::forward<Wx>(w)) {}
- };
-
- namespace property_detail {
- template <typename R, typename W>
- inline decltype(auto) property(std::true_type, R&& read, W&& write) {
- return property_wrapper<std::decay_t<R>, std::decay_t<W>>(std::forward<R>(read), std::forward<W>(write));
- }
- template <typename W, typename R>
- inline decltype(auto) property(std::false_type, W&& write, R&& read) {
- return property_wrapper<std::decay_t<R>, std::decay_t<W>>(std::forward<R>(read), std::forward<W>(write));
- }
- template <typename R>
- inline decltype(auto) property(std::true_type, R&& read) {
- return property_wrapper<std::decay_t<R>, void>(std::forward<R>(read), no_prop());
- }
- template <typename W>
- inline decltype(auto) property(std::false_type, W&& write) {
- return property_wrapper<void, std::decay_t<W>>(no_prop(), std::forward<W>(write));
- }
- } // property_detail
-
- template <typename F, typename G>
- inline decltype(auto) property(F&& f, G&& g) {
- typedef lua_bind_traits<meta::unqualified_t<F>> left_traits;
- typedef lua_bind_traits<meta::unqualified_t<G>> right_traits;
- return property_detail::property(meta::boolean<(left_traits::free_arity < right_traits::free_arity)>(), std::forward<F>(f), std::forward<G>(g));
- }
-
- template <typename F>
- inline decltype(auto) property(F&& f) {
- typedef lua_bind_traits<meta::unqualified_t<F>> left_traits;
- return property_detail::property(meta::boolean<(left_traits::free_arity < 2)>(), std::forward<F>(f));
- }
-
- template <typename F>
- inline decltype(auto) readonly_property(F&& f) {
- return property_detail::property(std::true_type(), std::forward<F>(f));
- }
-
- // Allow someone to make a member variable readonly (const)
- template <typename R, typename T>
- inline auto readonly(R T::* v) {
- typedef const R C;
- return static_cast<C T::*>(v);
- }
-
- template <typename T>
- struct var_wrapper {
- T value;
- template <typename... Args>
- var_wrapper(Args&&... args) : value(std::forward<Args>(args)...) {}
- var_wrapper(const var_wrapper&) = default;
- var_wrapper(var_wrapper&&) = default;
- var_wrapper& operator=(const var_wrapper&) = default;
- var_wrapper& operator=(var_wrapper&&) = default;
- };
-
- template <typename V>
- inline auto var(V&& v) {
- typedef meta::unqualified_t<V> T;
- return var_wrapper<T>(std::forward<V>(v));
- }
-
-} // sol
-
-#endif // SOL_PROPERTY_HPP