mirror of
https://github.com/ThePhD/sol2.git
synced 2024-03-22 13:10:44 +08:00
92a6fb8c11
fix implicitly convertible function pointers from classes using `call_detail`'s `lua_call_wrapper` specificaly add documentation for working with `std::function`
318 lines
11 KiB
C++
318 lines
11 KiB
C++
// The MIT License (MIT)
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// Copyright (c) 2013-2017 Rapptz, ThePhD and contributors
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef SOL_WRAPPER_HPP
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#define SOL_WRAPPER_HPP
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#include "types.hpp"
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namespace sol {
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template <typename F, typename = void>
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struct wrapper {
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typedef lua_bind_traits<meta::unqualified_t<F>> traits_type;
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typedef typename traits_type::args_list args_list;
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typedef typename traits_type::args_list free_args_list;
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typedef typename traits_type::returns_list returns_list;
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template <typename... Args>
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static decltype(auto) call(F& f, Args&&... args) {
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return f(std::forward<Args>(args)...);
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}
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struct caller {
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template <typename... Args>
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decltype(auto) operator()(F& fx, Args&&... args) const {
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return call(fx, std::forward<Args>(args)...);
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}
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};
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};
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template <typename F>
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struct wrapper<F, std::enable_if_t<std::is_function<std::remove_pointer_t<meta::unqualified_t<F>>>::value>> {
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typedef lua_bind_traits<std::remove_pointer_t<meta::unqualified_t<F>>> traits_type;
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typedef typename traits_type::args_list args_list;
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typedef typename traits_type::args_list free_args_list;
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typedef typename traits_type::returns_list returns_list;
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template <F fx, typename... Args>
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static decltype(auto) invoke(Args&&... args) {
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return fx(std::forward<Args>(args)...);
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}
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template <typename... Args>
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static decltype(auto) call(F& fx, Args&&... args) {
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return fx(std::forward<Args>(args)...);
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}
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struct caller {
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template <typename... Args>
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decltype(auto) operator()(F& fx, Args&&... args) const {
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return call(fx, std::forward<Args>(args)...);
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}
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};
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template <F fx>
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struct invoker {
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template <typename... Args>
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decltype(auto) operator()(Args&&... args) const {
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return invoke<fx>(std::forward<Args>(args)...);
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}
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};
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};
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template <typename F>
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struct wrapper<F, std::enable_if_t<std::is_member_object_pointer<meta::unqualified_t<F>>::value>> {
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typedef lua_bind_traits<meta::unqualified_t<F>> traits_type;
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typedef typename traits_type::object_type object_type;
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typedef typename traits_type::return_type return_type;
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typedef typename traits_type::args_list args_list;
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typedef types<object_type&, return_type> free_args_list;
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typedef typename traits_type::returns_list returns_list;
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template <F fx>
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static decltype(auto) invoke(object_type& mem) {
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return mem.*fx;
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}
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template <F fx, typename Arg, typename... Args>
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static decltype(auto) invoke(object_type& mem, Arg&& arg, Args&&...) {
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return mem.*fx = std::forward<Arg>(arg);
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}
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template <typename Fx>
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static decltype(auto) call(Fx&& fx, object_type& mem) {
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return (mem.*fx);
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}
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template <typename Fx, typename Arg, typename... Args>
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static void call(Fx&& fx, object_type& mem, Arg&& arg, Args&&...) {
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(mem.*fx) = std::forward<Arg>(arg);
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}
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struct caller {
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template <typename Fx, typename... Args>
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decltype(auto) operator()(Fx&& fx, object_type& mem, Args&&... args) const {
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return call(std::forward<Fx>(fx), mem, std::forward<Args>(args)...);
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}
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};
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template <F fx>
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struct invoker {
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template <typename... Args>
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decltype(auto) operator()(Args&&... args) const {
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return invoke<fx>(std::forward<Args>(args)...);
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}
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};
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};
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template <typename F, typename R, typename O, typename... FArgs>
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struct member_function_wrapper {
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typedef O object_type;
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typedef lua_bind_traits<F> traits_type;
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typedef typename traits_type::args_list args_list;
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typedef types<object_type&, FArgs...> free_args_list;
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typedef meta::tuple_types<R> returns_list;
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template <F fx, typename... Args>
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static R invoke(O& mem, Args&&... args) {
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return (mem.*fx)(std::forward<Args>(args)...);
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}
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template <typename Fx, typename... Args>
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static R call(Fx&& fx, O& mem, Args&&... args) {
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return (mem.*fx)(std::forward<Args>(args)...);
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}
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struct caller {
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template <typename Fx, typename... Args>
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decltype(auto) operator()(Fx&& fx, O& mem, Args&&... args) const {
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return call(std::forward<Fx>(fx), mem, std::forward<Args>(args)...);
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}
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};
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template <F fx>
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struct invoker {
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template <typename... Args>
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decltype(auto) operator()(O& mem, Args&&... args) const {
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return invoke<fx>(mem, std::forward<Args>(args)...);
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}
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};
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...)> : public member_function_wrapper<R(O:: *)(Args...), R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const> : public member_function_wrapper<R(O:: *)(Args...) const, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const volatile> : public member_function_wrapper<R(O:: *)(Args...) const volatile, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) &> : public member_function_wrapper<R(O:: *)(Args...) &, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const &> : public member_function_wrapper<R(O:: *)(Args...) const &, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const volatile &> : public member_function_wrapper<R(O:: *)(Args...) const volatile &, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) &> : public member_function_wrapper<R(O:: *)(Args..., ...) &, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) const &> : public member_function_wrapper<R(O:: *)(Args..., ...) const &, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) const volatile &> : public member_function_wrapper<R(O:: *)(Args..., ...) const volatile &, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) && > : public member_function_wrapper<R(O:: *)(Args...) &, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const &&> : public member_function_wrapper<R(O:: *)(Args...) const &, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const volatile &&> : public member_function_wrapper<R(O:: *)(Args...) const volatile &, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) && > : public member_function_wrapper<R(O:: *)(Args..., ...) &, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) const &&> : public member_function_wrapper<R(O:: *)(Args..., ...) const &, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) const volatile &&> : public member_function_wrapper<R(O:: *)(Args..., ...) const volatile &, R, O, Args...> {
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};
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#ifdef SOL_NOEXCEPT_FUNCTION_TYPE //noexcept has become a part of a function's type
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) noexcept> : public member_function_wrapper<R(O:: *)(Args...) noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const noexcept> : public member_function_wrapper<R(O:: *)(Args...) const noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const volatile noexcept> : public member_function_wrapper<R(O:: *)(Args...) const volatile noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) & noexcept> : public member_function_wrapper<R(O:: *)(Args...) & noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const & noexcept> : public member_function_wrapper<R(O:: *)(Args...) const & noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const volatile & noexcept> : public member_function_wrapper<R(O:: *)(Args...) const volatile & noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) & noexcept> : public member_function_wrapper<R(O:: *)(Args..., ...) & noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) const & noexcept> : public member_function_wrapper<R(O:: *)(Args..., ...) const & noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) const volatile & noexcept> : public member_function_wrapper<R(O:: *)(Args..., ...) const volatile & noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) && noexcept> : public member_function_wrapper<R(O:: *)(Args...) & noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const && noexcept> : public member_function_wrapper<R(O:: *)(Args...) const & noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args...) const volatile && noexcept> : public member_function_wrapper<R(O:: *)(Args...) const volatile & noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) && noexcept> : public member_function_wrapper<R(O:: *)(Args..., ...) & noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) const && noexcept> : public member_function_wrapper<R(O:: *)(Args..., ...) const & noexcept, R, O, Args...> {
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};
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template <typename R, typename O, typename... Args>
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struct wrapper<R(O:: *)(Args..., ...) const volatile && noexcept> : public member_function_wrapper<R(O:: *)(Args..., ...) const volatile & noexcept, R, O, Args...> {
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};
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#endif // noexcept is part of a function's type
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} // sol
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#endif // SOL_WRAPPER_HPP
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