BlackMATov/meta.hpp
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remove resolve_poly_type, use resolve_type(T&&) instead

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BlackMATov
2023-12-29 02:24:11 +07:00
parent 427459dcc6
commit b65e71a6f1
9 changed files with 164 additions and 129 deletions
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14
headers/meta.hpp/meta_detail/base_info.hpp
View File

@@ -22,11 +22,19 @@ namespace meta_hpp::detail
concept check_base_info_enabled //
= requires { typename T::meta_base_info; };
template < check_base_info_enabled T >
using get_meta_base_info = typename T::meta_base_info;
template < typename T >
concept check_poly_info_enabled //
concept poly_info_enabled //
= requires(type_registry& r, const T& v) {
{ v.get_most_derived_meta_poly_info(r) } -> std::convertible_to<poly_info>;
{ v.meta_poly_info(r) } -> std::convertible_to<poly_info>;
};
template < poly_info_enabled T >
poly_info get_meta_poly_info(type_registry& r, const T& v) {
return v.meta_poly_info(r);
}
}
#define META_HPP_ENABLE_BASE_INFO(...) \
@@ -39,7 +47,7 @@ private:
META_HPP_ENABLE_BASE_INFO(__VA_ARGS__) \
public: \
META_HPP_DETAIL_IGNORE_OVERRIDE_WARNINGS_PUSH() \
virtual ::meta_hpp::detail::poly_info get_most_derived_meta_poly_info(::meta_hpp::detail::type_registry& registry) const { \
virtual ::meta_hpp::detail::poly_info meta_poly_info(::meta_hpp::detail::type_registry& registry) const { \
using self_type = std::remove_cvref_t<decltype(*this)>; \
return ::meta_hpp::detail::poly_info{.ptr = this, .type = registry.resolve_class_type<self_type>()}; \
} \

40
headers/meta.hpp/meta_registry.hpp
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@@ -37,10 +37,23 @@ namespace meta_hpp
template < typename T >
// NOLINTNEXTLINE(*-missing-std-forward)
[[nodiscard]] auto resolve_type(T&&) {
[[nodiscard]] auto resolve_type(T&& from) {
using namespace detail;
using raw_type = std::remove_cvref_t<T>;
type_registry& registry = type_registry::instance();
return registry.resolve_type<std::remove_cvref_t<T>>();
if constexpr ( std::is_class_v<raw_type> && std::is_polymorphic_v<raw_type> ) {
static_assert(
detail::poly_info_enabled<T>,
"The class doesn't support polymorphic type resolving. "
"Use the META_HPP_ENABLE_POLY_INFO macro to fix it."
);
return detail::get_meta_poly_info(registry, from).type;
} else {
(void)from;
return registry.resolve_type<raw_type>();
}
}
template < typename... Ts >
@@ -58,29 +71,6 @@ namespace meta_hpp
}
}
namespace meta_hpp
{
template < typename T >
// NOLINTNEXTLINE(*-missing-std-forward)
[[nodiscard]] auto resolve_poly_type(T&& from) {
using namespace detail;
using raw_type = std::remove_cvref_t<T>;
type_registry& registry = type_registry::instance();
if constexpr ( std::is_class_v<raw_type> ) {
static_assert(
detail::check_poly_info_enabled<raw_type>,
"The class doesn't support polymorphic type resolving. Use the META_HPP_ENABLE_POLY_INFO macro to fix it."
);
return from.get_most_derived_meta_poly_info(registry).type;
} else {
(void)from;
return registry.resolve_type<raw_type>();
}
}
}
namespace meta_hpp
{
template < detail::class_kind Class, typename... Args >

4
headers/meta.hpp/meta_types/class_type.hpp
View File

@@ -43,7 +43,7 @@ namespace meta_hpp::detail::class_type_data_impl
});
if constexpr ( check_base_info_enabled<Target> ) {
using target_base_info = typename Target::meta_base_info;
using target_base_info = get_meta_base_info<Target>;
target_base_info::for_each([&info]<class_kind TargetBase>() { //
add_upcast_info<Class, TargetBase>(info);
});
@@ -53,7 +53,7 @@ namespace meta_hpp::detail::class_type_data_impl
template < class_kind Class >
void fill_upcast_info(new_base_info_t& info) {
if constexpr ( check_base_info_enabled<Class> ) {
using class_base_info = typename Class::meta_base_info;
using class_base_info = get_meta_base_info<Class>;
class_base_info::for_each([&info]<class_kind ClassBase>() {
info.base_classes.push_back(resolve_type<ClassBase>());
add_upcast_info<Class, ClassBase>(info);

12
headers/meta.hpp/meta_ucast/ucast.hpp
View File

@@ -22,8 +22,9 @@ namespace meta_hpp
using to_data_type = std::remove_pointer_t<To>;
static_assert(
detail::check_poly_info_enabled<from_data_type>,
"The type doesn't support ucasts. Use the META_HPP_ENABLE_POLY_INFO macro to fix it."
detail::poly_info_enabled<from_data_type>,
"The type doesn't support ucasts. "
"Use the META_HPP_ENABLE_POLY_INFO macro to fix it."
);
if ( from == nullptr ) {
@@ -34,7 +35,7 @@ namespace meta_hpp
return from;
} else {
detail::type_registry& registry{detail::type_registry::instance()};
const detail::poly_info& meta_info{from->get_most_derived_meta_poly_info(registry)};
const detail::poly_info& meta_info{detail::get_meta_poly_info(registry, *from)};
// NOLINTNEXTLINE(*-const-cast)
void* most_derived_object_ptr = const_cast<void*>(meta_info.ptr);
@@ -56,8 +57,9 @@ namespace meta_hpp
using to_data_type = std::remove_reference_t<To>;
static_assert(
detail::check_poly_info_enabled<from_data_type>,
"The type doesn't support ucasts. Use the META_HPP_ENABLE_POLY_INFO macro to fix it."
detail::poly_info_enabled<from_data_type>,
"The type doesn't support ucasts. "
"Use the META_HPP_ENABLE_POLY_INFO macro to fix it."
);
if ( to_data_type* ptr = ucast<to_data_type*>(std::addressof(from)) ) {