// sol2 // The MIT License (MIT) // Copyright (c) 2013-2021 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_WRAPPER_HPP #define SOL_WRAPPER_HPP #include <sol/types.hpp> namespace sol { namespace detail { template <typename T> using array_return_type = meta::conditional_t<std::is_array<T>::value, std::add_lvalue_reference_t<T>, T>; } template <typename F, typename = void> struct wrapper { typedef lua_bind_traits<meta::unqualified_t<F>> traits_type; typedef typename traits_type::args_list args_list; typedef typename traits_type::args_list free_args_list; typedef typename traits_type::returns_list returns_list; template <typename... Args> static decltype(auto) call(F& f, Args&&... args) { return f(std::forward<Args>(args)...); } struct caller { template <typename... Args> decltype(auto) operator()(F& fx, Args&&... args) const { return call(fx, std::forward<Args>(args)...); } }; }; template <typename F> struct wrapper<F, std::enable_if_t<std::is_function<std::remove_pointer_t<meta::unqualified_t<F>>>::value>> { typedef lua_bind_traits<std::remove_pointer_t<meta::unqualified_t<F>>> traits_type; typedef typename traits_type::args_list args_list; typedef typename traits_type::args_list free_args_list; typedef typename traits_type::returns_list returns_list; template <F fx, typename... Args> static decltype(auto) invoke(Args&&... args) { return fx(std::forward<Args>(args)...); } template <typename... Args> static decltype(auto) call(F& fx, Args&&... args) { return fx(std::forward<Args>(args)...); } struct caller { template <typename... Args> decltype(auto) operator()(F& fx, Args&&... args) const { return call(fx, std::forward<Args>(args)...); } }; template <F fx> struct invoker { template <typename... Args> decltype(auto) operator()(Args&&... args) const { return invoke<fx>(std::forward<Args>(args)...); } }; }; template <typename F> struct wrapper<F, std::enable_if_t<std::is_member_object_pointer<meta::unqualified_t<F>>::value>> { typedef lua_bind_traits<meta::unqualified_t<F>> traits_type; typedef typename traits_type::object_type object_type; typedef typename traits_type::return_type return_type; typedef typename traits_type::args_list args_list; typedef types<object_type&, return_type> free_args_list; typedef typename traits_type::returns_list returns_list; template <F fx> static auto call(object_type& mem) -> detail::array_return_type<decltype(mem.*fx)> { return mem.*fx; } template <F fx, typename Arg, typename... Args> static decltype(auto) invoke(object_type& mem, Arg&& arg, Args&&...) { return mem.*fx = std::forward<Arg>(arg); } template <typename Fx> static auto call(Fx&& fx, object_type& mem) -> detail::array_return_type<decltype(mem.*fx)> { return mem.*fx; } template <typename Fx, typename Arg, typename... Args> static void call(Fx&& fx, object_type& mem, Arg&& arg, Args&&...) { using actual_type = meta::unqualified_t<detail::array_return_type<decltype(mem.*fx)>>; if constexpr (std::is_array_v<actual_type>) { using std::cbegin; using std::cend; auto first = cbegin(arg); auto last = cend(arg); for (std::size_t i = 0; first != last; ++i, ++first) { (mem.*fx)[i] = *first; } } else { (mem.*fx) = std::forward<Arg>(arg); } } struct caller { template <typename Fx, typename... Args> decltype(auto) operator()(Fx&& fx, object_type& mem, Args&&... args) const { return call(std::forward<Fx>(fx), mem, std::forward<Args>(args)...); } }; template <F fx> struct invoker { template <typename... Args> decltype(auto) operator()(Args&&... args) const { return invoke<fx>(std::forward<Args>(args)...); } }; }; template <typename F, typename R, typename O, typename... FArgs> struct member_function_wrapper { typedef O object_type; typedef lua_bind_traits<F> traits_type; typedef typename traits_type::args_list args_list; typedef types<object_type&, FArgs...> free_args_list; typedef meta::tuple_types<R> returns_list; template <F fx, typename... Args> static R invoke(O& mem, Args&&... args) { return (mem.*fx)(std::forward<Args>(args)...); } template <typename Fx, typename... Args> static R call(Fx&& fx, O& mem, Args&&... args) { return (mem.*fx)(std::forward<Args>(args)...); } struct caller { template <typename Fx, typename... Args> decltype(auto) operator()(Fx&& fx, O& mem, Args&&... args) const { return call(std::forward<Fx>(fx), mem, std::forward<Args>(args)...); } }; template <F fx> struct invoker { template <typename... Args> decltype(auto) operator()(O& mem, Args&&... args) const { return invoke<fx>(mem, std::forward<Args>(args)...); } }; }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...)> : public member_function_wrapper<R (O::*)(Args...), R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const> : public member_function_wrapper<R (O::*)(Args...) const, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const volatile> : public member_function_wrapper<R (O::*)(Args...) const volatile, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...)&> : public member_function_wrapper<R (O::*)(Args...)&, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const&> : public member_function_wrapper<R (O::*)(Args...) const&, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const volatile&> : public member_function_wrapper<R (O::*)(Args...) const volatile&, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...)&> : public member_function_wrapper<R (O::*)(Args..., ...)&, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...) const&> : public member_function_wrapper<R (O::*)(Args..., ...) const&, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...) const volatile&> : public member_function_wrapper<R (O::*)(Args..., ...) const volatile&, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) &&> : public member_function_wrapper<R (O::*)(Args...)&, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const&&> : public member_function_wrapper<R (O::*)(Args...) const&, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const volatile&&> : public member_function_wrapper<R (O::*)(Args...) const volatile&, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...) &&> : public member_function_wrapper<R (O::*)(Args..., ...)&, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...) const&&> : public member_function_wrapper<R (O::*)(Args..., ...) const&, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...) const volatile&&> : public member_function_wrapper<R (O::*)(Args..., ...) const volatile&, R, O, Args...> { }; #if SOL_IS_ON(SOL_USE_NOEXCEPT_FUNCTION_TYPE_I_) // noexcept has become a part of a function's type template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) noexcept> : public member_function_wrapper<R (O::*)(Args...) noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const noexcept> : public member_function_wrapper<R (O::*)(Args...) const noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const volatile noexcept> : public member_function_wrapper<R (O::*)(Args...) const volatile noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...)& noexcept> : public member_function_wrapper<R (O::*)(Args...)& noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const& noexcept> : public member_function_wrapper<R (O::*)(Args...) const& noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const volatile& noexcept> : public member_function_wrapper<R (O::*)(Args...) const volatile& noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...)& noexcept> : public member_function_wrapper<R (O::*)(Args..., ...)& noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...) const& noexcept> : public member_function_wrapper<R (O::*)(Args..., ...) const& noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...) const volatile& noexcept> : public member_function_wrapper<R (O::*)(Args..., ...) const volatile& noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...)&& noexcept> : public member_function_wrapper<R (O::*)(Args...)& noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const&& noexcept> : public member_function_wrapper<R (O::*)(Args...) const& noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args...) const volatile&& noexcept> : public member_function_wrapper<R (O::*)(Args...) const volatile& noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...)&& noexcept> : public member_function_wrapper<R (O::*)(Args..., ...)& noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...) const&& noexcept> : public member_function_wrapper<R (O::*)(Args..., ...) const& noexcept, R, O, Args...> { }; template <typename R, typename O, typename... Args> struct wrapper<R (O::*)(Args..., ...) const volatile&& noexcept> : public member_function_wrapper<R (O::*)(Args..., ...) const volatile& noexcept, R, O, Args...> { }; #endif // noexcept is part of a function's type } // namespace sol #endif // SOL_WRAPPER_HPP