component.hpp

#ifndef ENTT_ENTITY_COMPONENT_HPP
#define ENTT_ENTITY_COMPONENT_HPP
 
#include <type_traits>
#include "../config/config.h"
 
namespace entt {
 
struct basic_component_traits {
    static constexpr auto in_place_delete = false;
    static constexpr auto ignore_if_empty = ENTT_IGNORE_IF_EMPTY;
    static constexpr auto page_size = ENTT_PACKED_PAGE;
};
 
template<typename Type, typename = void>
struct component_traits: basic_component_traits {
    static_assert(std::is_same_v<std::decay_t<Type>, Type>, "Unsupported type");
};
 
template<class Type>
inline constexpr bool ignore_as_empty_v = component_traits<Type>::ignore_if_empty &&std::is_empty_v<Type>;
 
} // namespace entt
 
#endif