meta: add and typename keywords for fun (thanks to msvc that also accepts invalid code)

src/entt/meta/factory.hpp

@@ -192,7 +192,7 @@ class meta_factory<Type> {
             (std::is_member_object_pointer_v<decltype(value_list_element_v<Index, Setter>)> && ... && std::is_const_v<data_type>) ? internal::meta_traits::is_const : internal::meta_traits::is_none,
             internal::meta_node<std::remove_const_t<std::remove_reference_t<data_type>>>::resolve(),
             &meta_arg<type_list<type_list_element_t<type_list_element_t<Index, args_type>::size != 1u, type_list_element_t<Index, args_type>>...>>,
-            [](meta_handle instance, meta_any value) -> bool { return (meta_setter<Type, value_list_element_v<Index, Setter>>(instance->as_ref(), value) || ...); },
+            [](meta_handle instance, meta_any value) -> bool { return (meta_setter<Type, value_list_element_v<Index, Setter>>(*instance.operator->(), value) || ...); },
             &meta_getter<Type, Getter, Policy>
             // tricks clang-format
         };

src/entt/meta/utility.hpp

@@ -196,8 +196,8 @@ template<typename Type, auto Data>
 [[nodiscard]] bool meta_setter([[maybe_unused]] meta_handle instance, [[maybe_unused]] meta_any value) {
     if constexpr(!std::is_same_v<decltype(Data), Type> && !std::is_same_v<decltype(Data), std::nullptr_t>) {
         if constexpr(std::is_function_v<std::remove_reference_t<std::remove_pointer_t<decltype(Data)>>>) {
-            using descriptor = typename meta_function_helper_t<Type, decltype(Data)>;
-            using data_type = type_list_element_t<descriptor::is_static, descriptor::args_type>;
+            using descriptor = meta_function_helper_t<Type, decltype(Data)>;
+            using data_type = type_list_element_t<descriptor::is_static, typename descriptor::args_type>;
 
             if(auto *const clazz = instance->try_cast<Type>(); clazz && value.allow_cast<data_type>()) {
                 Data(*clazz, value.cast<data_type>());
@@ -388,7 +388,7 @@ template<typename Type, typename... Args>
  */
 template<typename Type, typename Policy = as_is_t, typename Candidate>
 [[nodiscard]] meta_any meta_construct(Candidate &&candidate, meta_any *const args) {
-    if constexpr(typename meta_function_helper_t<Type, Candidate>::is_static) {
+    if constexpr(meta_function_helper_t<Type, Candidate>::is_static) {
         return internal::meta_invoke<Type, Policy>({}, std::forward<Candidate>(candidate), args, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<Candidate>>::args_type::size>{});
     } else {
         return internal::meta_invoke<Type, Policy>(*args, std::forward<Candidate>(candidate), args + 1u, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<Candidate>>::args_type::size>{});
@@ -405,7 +405,7 @@ template<typename Type, typename Policy = as_is_t, typename Candidate>
  */
 template<typename Type, auto Candidate, typename Policy = as_is_t>
 [[nodiscard]] meta_any meta_construct(meta_any *const args) {
-    if constexpr(typename meta_function_helper_t<Type, decltype(Candidate)>::is_static) {
+    if constexpr(meta_function_helper_t<Type, decltype(Candidate)>::is_static) {
         return internal::meta_invoke<Type, Policy>({}, Candidate, args, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<decltype(Candidate)>>::args_type::size>{});
     } else {
         return internal::meta_invoke<Type, Policy>(*args, Candidate, args + 1u, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<decltype(Candidate)>>::args_type::size>{});