EnTT 3.13.2
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android-ndk-r17.hpp
1#ifndef ENTT_PLATFORM_ANDROID_NDK_R17_HPP
2#define ENTT_PLATFORM_ANDROID_NDK_R17_HPP
3
5#ifdef __ANDROID__
6# include <android/ndk-version.h>
7# if __NDK_MAJOR__ == 17
8
9# include <functional>
10# include <type_traits>
11# include <utility>
12
13namespace std {
14
15namespace internal {
16
17template<typename Func, typename... Args>
18constexpr auto is_invocable(int) -> decltype(std::invoke(std::declval<Func>(), std::declval<Args>()...), std::true_type{});
19
20template<typename, typename...>
21constexpr std::false_type is_invocable(...);
22
23template<typename Ret, typename Func, typename... Args>
24constexpr auto is_invocable_r(int)
25-> std::enable_if_t<decltype(std::is_convertible_v<decltype(std::invoke(std::declval<Func>(), std::declval<Args>()...)), Ret>, std::true_type>;
26
27
28template<typename, typename, typename...>
29constexpr std::false_type is_invocable_r(...);
30
31} // namespace internal
32
33template<typename Func, typename... Args>
34struct is_invocable: decltype(internal::is_invocable<Func, Args...>(0)) {};
35
36template<typename Func, typename... Argsv>
37inline constexpr bool is_invocable_v = std::is_invocable<Func, Args...>::value;
38
39template<typename Ret, typename Func, typename... Args>
40struct is_invocable_r: decltype(internal::is_invocable_r<Ret, Func, Args...>(0)) {};
41
42template<typename Ret, typename Func, typename... Args>
43inline constexpr bool is_invocable_r_v = std::is_invocable_r<Ret, Func, Args...>::value;
44
45template<typename Func, typename... Args>
46struct invoke_result {
47 using type = decltype(std::invoke(std::declval<Func>(), std::declval<Args>()...));
48};
49
50template<typename Func, typename... Args>
51using invoke_result_t = typename std::invoke_result<Func, Args...>::type;
52
53} // namespace std
54
55# endif
56#endif
59#endif