#ifndef ENTT_PLATFORM_ANDROID_NDK_R17_HPP #define ENTT_PLATFORM_ANDROID_NDK_R17_HPP /** * @cond TURN_OFF_DOXYGEN * Internal details not to be documented. */ #ifdef __ANDROID__ #include <android/ndk-version.h> #if __NDK_MAJOR__ == 17 #include <functional> #include <type_traits> #include <utility> namespace std { namespace internal { template<typename Func, typename... Args> constexpr auto is_invocable(int) -> decltype(std::invoke(std::declval<Func>(), std::declval<Args>()...), std::true_type{}); template<typename, typename...> constexpr std::false_type is_invocable(...); template<typename Ret, typename Func, typename... Args> constexpr auto is_invocable_r(int) -> std::enable_if_t<decltype(std::is_convertible_v<decltype(std::invoke(std::declval<Func>(), std::declval<Args>()...)), Ret>, std::true_type>; template<typename, typename, typename...> constexpr std::false_type is_invocable_r(...); } template<typename Func, typename... Args> struct is_invocable: decltype(internal::is_invocable<Func, Args...>(0)) {}; template<typename Func, typename... Argsv> inline constexpr bool is_invocable_v = std::is_invocable<Func, Args...>::value; template<typename Ret, typename Func, typename... Args> struct is_invocable_r: decltype(internal::is_invocable_r<Ret, Func, Args...>(0)) {}; template<typename Ret, typename Func, typename... Args> inline constexpr bool is_invocable_r_v = std::is_invocable_r<Ret, Func, Args...>::value; template<typename Func, typename...Args> struct invoke_result { using type = decltype(std::invoke(std::declval<Func>(), std::declval<Args>()...)); }; template<typename Func, typename... Args> using invoke_result_t = typename std::invoke_result<Func, Args...>::type; } #endif #endif /** * Internal details not to be documented. * @endcond */ #endif