mirror of
https://github.com/mamedev/mame.git
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244 lines
9.5 KiB
C++
244 lines
9.5 KiB
C++
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// The MIT License (MIT)
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// Copyright (c) 2013-2016 Rappt1101010z, 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_BIND_TRAITS_HPP
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#define SOL_BIND_TRAITS_HPP
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#include "tuple.hpp"
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namespace sol {
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namespace meta {
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namespace meta_detail {
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template<class F>
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struct check_deducible_signature {
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struct nat {};
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template<class G>
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static auto test(int) -> decltype(&G::operator(), void());
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template<class>
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static auto test(...)->nat;
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using type = std::is_void<decltype(test<F>(0))>;
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};
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} // meta_detail
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template<class F>
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struct has_deducible_signature : meta_detail::check_deducible_signature<F>::type { };
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namespace meta_detail {
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template <std::size_t I, typename T>
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struct void_tuple_element : meta::tuple_element<I, T> {};
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template <std::size_t I>
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struct void_tuple_element<I, std::tuple<>> { typedef void type; };
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template <std::size_t I, typename T>
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using void_tuple_element_t = typename void_tuple_element<I, T>::type;
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template <bool has_c_variadic, typename T, typename R, typename... Args>
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struct basic_traits {
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private:
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typedef std::conditional_t<std::is_void<T>::value, int, T>& first_type;
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public:
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static const bool is_member_function = std::is_void<T>::value;
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static const bool has_c_var_arg = has_c_variadic;
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static const std::size_t arity = sizeof...(Args);
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static const std::size_t free_arity = sizeof...(Args)+static_cast<std::size_t>(!std::is_void<T>::value);
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typedef types<Args...> args_list;
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typedef std::tuple<Args...> args_tuple;
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typedef T object_type;
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typedef R return_type;
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typedef tuple_types<R> returns_list;
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typedef R(function_type)(Args...);
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typedef std::conditional_t<std::is_void<T>::value, args_list, types<first_type, Args...>> free_args_list;
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typedef std::conditional_t<std::is_void<T>::value, R(Args...), R(first_type, Args...)> free_function_type;
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typedef std::conditional_t<std::is_void<T>::value, R(*)(Args...), R(*)(first_type, Args...)> free_function_pointer_type;
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typedef std::remove_pointer_t<free_function_pointer_type> signature_type;
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template<std::size_t i>
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using arg_at = void_tuple_element_t<i, args_tuple>;
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};
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template<typename Signature, bool b = has_deducible_signature<Signature>::value>
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struct fx_traits : basic_traits<false, void, void> {};
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// Free Functions
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template<typename R, typename... Args>
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struct fx_traits<R(Args...), false> : basic_traits<false, void, R, Args...> {
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typedef R(*function_pointer_type)(Args...);
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};
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template<typename R, typename... Args>
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struct fx_traits<R(*)(Args...), false> : basic_traits<false, void, R, Args...> {
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typedef R(*function_pointer_type)(Args...);
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};
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template<typename R, typename... Args>
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struct fx_traits<R(Args..., ...), false> : basic_traits<true, void, R, Args...> {
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typedef R(*function_pointer_type)(Args..., ...);
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};
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template<typename R, typename... Args>
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struct fx_traits<R(*)(Args..., ...), false> : basic_traits<true, void, R, Args...> {
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typedef R(*function_pointer_type)(Args..., ...);
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};
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// Member Functions
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/* C-Style Variadics */
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args...), false> : basic_traits<false, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args...);
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args..., ...), false> : basic_traits<true, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args..., ...);
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};
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/* Const Volatile */
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args...) const, false> : basic_traits<false, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args...) const;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args..., ...) const, false> : basic_traits<true, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args..., ...) const;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args...) const volatile, false> : basic_traits<false, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args...) const volatile;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args..., ...) const volatile, false> : basic_traits<true, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args..., ...) const volatile;
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};
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/* Member Function Qualifiers */
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args...) &, false> : basic_traits<false, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args...) &;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args..., ...) &, false> : basic_traits<true, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args..., ...) &;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args...) const &, false> : basic_traits<false, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args...) const &;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args..., ...) const &, false> : basic_traits<true, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args..., ...) const &;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args...) const volatile &, false> : basic_traits<false, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args...) const volatile &;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args..., ...) const volatile &, false> : basic_traits<true, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args..., ...) const volatile &;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args...) && , false> : basic_traits<false, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args...) && ;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args..., ...) && , false> : basic_traits<true, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args..., ...) && ;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args...) const &&, false> : basic_traits<false, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args...) const &&;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args..., ...) const &&, false> : basic_traits<true, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args..., ...) const &&;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args...) const volatile &&, false> : basic_traits<false, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args...) const volatile &&;
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};
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template<typename T, typename R, typename... Args>
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struct fx_traits<R(T::*)(Args..., ...) const volatile &&, false> : basic_traits<true, T, R, Args...> {
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typedef R(T::* function_pointer_type)(Args..., ...) const volatile &&;
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};
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template<typename Signature>
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struct fx_traits<Signature, true> : fx_traits<typename fx_traits<decltype(&Signature::operator())>::function_type, false> {};
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template<typename Signature, bool b = std::is_member_object_pointer<Signature>::value>
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struct callable_traits : fx_traits<std::decay_t<Signature>> {
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};
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template<typename R, typename T>
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struct callable_traits<R(T::*), true> {
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typedef R Arg;
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typedef T object_type;
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using signature_type = R(T::*);
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static const bool is_member_function = false;
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static const std::size_t arity = 1;
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static const std::size_t free_arity = 2;
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typedef std::tuple<Arg> args_tuple;
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typedef R return_type;
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typedef types<Arg> args_list;
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typedef types<T, Arg> free_args_list;
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typedef meta::tuple_types<R> returns_list;
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typedef R(function_type)(T&, R);
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typedef R(*function_pointer_type)(T&, R);
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typedef R(*free_function_pointer_type)(T&, R);
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template<std::size_t i>
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using arg_at = void_tuple_element_t<i, args_tuple>;
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};
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} // meta_detail
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template<typename Signature>
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struct bind_traits : meta_detail::callable_traits<Signature> {};
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template<typename Signature>
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using function_args_t = typename bind_traits<Signature>::args_list;
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template<typename Signature>
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using function_signature_t = typename bind_traits<Signature>::signature_type;
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template<typename Signature>
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using function_return_t = typename bind_traits<Signature>::return_type;
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} // meta
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} // sol
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#endif // SOL_BIND_TRAITS_HPP
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