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meta: resolve an ambiguity and avoid redundant default ctors (win-win)

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This commit is contained in:
Michele Caini
2022-10-13 08:59:16 +02:00
parent 3dd768bb9b
commit a0041d9062
1 changed files with 11 additions and 8 deletions
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19
src/entt/meta/factory.hpp
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@@ -266,15 +266,18 @@ public:
*/
template<typename... Args>
auto ctor() noexcept {
using descriptor = meta_function_helper_t<Type, Type (*)(Args...)>;
// default constructor is already implicitly generated, no need for redundancy
if constexpr(sizeof...(Args) != 0u) {
using descriptor = meta_function_helper_t<Type, Type (*)(Args...)>;
internal::meta_extend(
internal::owner(*ctx, *info),
type_id<typename descriptor::args_type>().hash(),
internal::meta_ctor_node{
descriptor::args_type::size,
&meta_arg<typename descriptor::args_type>,
static_cast<decltype(internal::meta_ctor_node::invoke)>(&meta_construct<Type, Args...>)});
internal::meta_extend(
internal::owner(*ctx, *info),
type_id<typename descriptor::args_type>().hash(),
internal::meta_ctor_node{
descriptor::args_type::size,
&meta_arg<typename descriptor::args_type>,
&meta_construct<Type, Args...>});
}
bucket = nullptr;
return *this;