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meta: prepare to support all dereferenceable types with meta_any

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skypjack
2026-02-12 19:06:14 +01:00
parent 071febbc0c
commit 849852464e
1 changed files with 9 additions and 9 deletions
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18
src/entt/meta/meta.hpp
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@@ -175,10 +175,10 @@ private:
/*! @brief Opaque wrapper for values of any type. */
class meta_any {
using vtable_type = void(const internal::meta_traits, const meta_any &, const void *);
using vtable_type = void(const internal::meta_traits, const meta_any &, void *);
template<cvref_unqualified Type>
static void basic_vtable(const internal::meta_traits req, const meta_any &value, [[maybe_unused]] const void *other) {
static void basic_vtable(const internal::meta_traits req, const meta_any &value, [[maybe_unused]] void *other) {
if(req == internal::meta_traits::is_none) {
value.node = &internal::resolve<Type>(internal::meta_context::from(*value.ctx));
}
@@ -186,16 +186,16 @@ class meta_any {
if constexpr(is_meta_pointer_like_v<Type>) {
if(req == internal::meta_traits::is_pointer_like) {
if constexpr(std::is_function_v<typename std::pointer_traits<Type>::element_type>) {
const_cast<meta_any &>(value).emplace<Type>(*static_cast<const Type *>(other));
static_cast<meta_any *>(other)->emplace<Type>(any_cast<Type>(value.storage));
} else if constexpr(!std::is_void_v<std::remove_const_t<typename std::pointer_traits<Type>::element_type>>) {
using in_place_type = decltype(adl_meta_pointer_like<Type>::dereference(std::declval<const Type &>()));
if constexpr(std::is_constructible_v<bool, Type>) {
if(const auto &pointer_like = *static_cast<const Type *>(other); pointer_like) {
const_cast<meta_any &>(value).emplace<in_place_type>(adl_meta_pointer_like<Type>::dereference(pointer_like));
if(const auto &pointer_like = any_cast<const Type &>(value.storage); pointer_like) {
static_cast<meta_any *>(other)->emplace<in_place_type>(adl_meta_pointer_like<Type>::dereference(pointer_like));
}
} else {
const_cast<meta_any &>(value).emplace<in_place_type>(adl_meta_pointer_like<Type>::dereference(*static_cast<const Type *>(other)));
static_cast<meta_any *>(other)->emplace<in_place_type>(adl_meta_pointer_like<Type>::dereference(any_cast<const Type &>(value.storage)));
}
}
}
@@ -207,10 +207,10 @@ class meta_any {
if(!!(req & internal::meta_traits::is_const) || (value.storage.policy() == any_policy::cref)) {
// NOLINTNEXTLINE(bugprone-casting-through-void)
*static_cast<container_type *>(const_cast<void *>(other)) = container_type{*value.ctx, any_cast<const Type &>(value.storage)};
*static_cast<container_type *>(other) = container_type{*value.ctx, any_cast<const Type &>(value.storage)};
} else {
// NOLINTNEXTLINE(bugprone-casting-through-void)
*static_cast<container_type *>(const_cast<void *>(other)) = container_type{*value.ctx, any_cast<Type &>(const_cast<meta_any &>(value).storage)};
*static_cast<container_type *>(other) = container_type{*value.ctx, any_cast<Type &>(const_cast<meta_any &>(value).storage)};
}
}
}
@@ -611,7 +611,7 @@ public:
*/
[[nodiscard]] meta_any operator*() const noexcept {
meta_any ret{meta_ctx_arg, *ctx};
if(*this) { vtable(internal::meta_traits::is_pointer_like, ret, storage.data()); }
if(*this) { vtable(internal::meta_traits::is_pointer_like, *this, &ret); }
return ret;
}