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component_traits: refine internal checks

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skypjack
2026-01-28 12:27:55 +01:00
parent 4b43368116
commit 5e92b9113f
1 changed files with 7 additions and 6 deletions
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13
src/entt/entity/component.hpp
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@@ -1,6 +1,7 @@
#ifndef ENTT_ENTITY_COMPONENT_HPP
#define ENTT_ENTITY_COMPONENT_HPP
#include <concepts>
#include <cstddef>
#include <type_traits>
#include "../config/config.h"
@@ -11,25 +12,25 @@ namespace entt {
/*! @cond ENTT_INTERNAL */
namespace internal {
template<typename Type, typename = void>
template<typename Type>
struct in_place_delete: std::bool_constant<!(std::is_move_constructible_v<Type> && std::is_move_assignable_v<Type>)> {};
template<>
struct in_place_delete<void>: std::false_type {};
template<typename Type>
struct in_place_delete<Type, std::enable_if_t<Type::in_place_delete>>
: std::true_type {};
requires Type::in_place_delete
struct in_place_delete<Type>: std::true_type {};
template<typename Type, typename = void>
template<typename Type>
struct page_size: std::integral_constant<std::size_t, !std::is_empty_v<ENTT_ETO_TYPE(Type)> * ENTT_PACKED_PAGE> {};
template<>
struct page_size<void>: std::integral_constant<std::size_t, 0u> {};
template<typename Type>
struct page_size<Type, std::void_t<decltype(Type::page_size)>>
: std::integral_constant<std::size_t, Type::page_size> {};
requires std::is_convertible_v<decltype(Type::page_size), std::size_t>
struct page_size<Type>: std::integral_constant<std::size_t, Type::page_size> {};
} // namespace internal
/*! @endcond */