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meta: make internal meta_invoke accept meta contexts and use them properly

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This commit is contained in:
Michele Caini
2022-10-10 15:13:22 +02:00
parent 2f2bdcac4d
commit c06280894b
1 changed files with 14 additions and 14 deletions
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28
src/entt/meta/utility.hpp
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@@ -309,34 +309,34 @@ template<typename Type, auto Data, typename Policy = as_is_t>
namespace internal {
template<typename Policy, typename Candidate, typename... Args>
[[nodiscard]] meta_any meta_invoke_with_args(Candidate &&candidate, Args &&...args) {
[[nodiscard]] meta_any meta_invoke_with_args(const meta_ctx &ctx, Candidate &&candidate, Args &&...args) {
if constexpr(std::is_same_v<decltype(std::invoke(std::forward<Candidate>(candidate), args...)), void>) {
std::invoke(std::forward<Candidate>(candidate), args...);
return meta_any{std::in_place_type<void>};
return meta_any{ctx, std::in_place_type<void>};
} else {
return meta_dispatch<Policy>(std::invoke(std::forward<Candidate>(candidate), args...));
return meta_dispatch<Policy>(ctx, std::invoke(std::forward<Candidate>(candidate), args...));
}
}
template<typename Type, typename Policy, typename Candidate, std::size_t... Index>
[[nodiscard]] meta_any meta_invoke([[maybe_unused]] meta_handle instance, Candidate &&candidate, [[maybe_unused]] meta_any *args, std::index_sequence<Index...>) {
[[nodiscard]] meta_any meta_invoke(const meta_ctx &ctx, [[maybe_unused]] meta_handle instance, Candidate &&candidate, [[maybe_unused]] meta_any *args, std::index_sequence<Index...>) {
using descriptor = meta_function_helper_t<Type, std::remove_reference_t<Candidate>>;
if constexpr(std::is_invocable_v<std::remove_reference_t<Candidate>, const Type &, type_list_element_t<Index, typename descriptor::args_type>...>) {
if(const auto *const clazz = instance->try_cast<const Type>(); clazz && ((args + Index)->allow_cast<type_list_element_t<Index, typename descriptor::args_type>>() && ...)) {
return meta_invoke_with_args<Policy>(std::forward<Candidate>(candidate), *clazz, (args + Index)->cast<type_list_element_t<Index, typename descriptor::args_type>>()...);
return meta_invoke_with_args<Policy>(ctx, std::forward<Candidate>(candidate), *clazz, (args + Index)->cast<type_list_element_t<Index, typename descriptor::args_type>>()...);
}
} else if constexpr(std::is_invocable_v<std::remove_reference_t<Candidate>, Type &, type_list_element_t<Index, typename descriptor::args_type>...>) {
if(auto *const clazz = instance->try_cast<Type>(); clazz && ((args + Index)->allow_cast<type_list_element_t<Index, typename descriptor::args_type>>() && ...)) {
return meta_invoke_with_args<Policy>(std::forward<Candidate>(candidate), *clazz, (args + Index)->cast<type_list_element_t<Index, typename descriptor::args_type>>()...);
return meta_invoke_with_args<Policy>(ctx, std::forward<Candidate>(candidate), *clazz, (args + Index)->cast<type_list_element_t<Index, typename descriptor::args_type>>()...);
}
} else {
if(((args + Index)->allow_cast<type_list_element_t<Index, typename descriptor::args_type>>() && ...)) {
return meta_invoke_with_args<Policy>(std::forward<Candidate>(candidate), (args + Index)->cast<type_list_element_t<Index, typename descriptor::args_type>>()...);
return meta_invoke_with_args<Policy>(ctx, std::forward<Candidate>(candidate), (args + Index)->cast<type_list_element_t<Index, typename descriptor::args_type>>()...);
}
}
return meta_any{};
return meta_any{meta_ctx_arg, ctx};
}
template<typename Type, typename... Args, std::size_t... Index>
@@ -368,7 +368,7 @@ template<typename Type, typename... Args, std::size_t... Index>
*/
template<typename Type, typename Policy = as_is_t, typename Candidate>
[[nodiscard]] meta_any meta_invoke_with(const meta_ctx &ctx, Candidate &&candidate, meta_handle instance, meta_any *const args) {
return internal::meta_invoke<Type, Policy>(std::move(instance), std::forward<Candidate>(candidate), args, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<Candidate>>::args_type::size>{});
return internal::meta_invoke<Type, Policy>(ctx, std::move(instance), std::forward<Candidate>(candidate), args, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<Candidate>>::args_type::size>{});
}
/**
@@ -397,8 +397,8 @@ template<typename Type, typename Policy = as_is_t, typename Candidate>
* @return A meta any containing the returned value, if any.
*/
template<typename Type, auto Candidate, typename Policy = as_is_t>
[[nodiscard]] meta_any meta_invoke(const meta_ctx &ctx /*_TODO*/, meta_handle instance, meta_any *const args) {
return internal::meta_invoke<Type, Policy>(std::move(instance), Candidate, args, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<decltype(Candidate)>>::args_type::size>{});
[[nodiscard]] meta_any meta_invoke(const meta_ctx &ctx, meta_handle instance, meta_any *const args) {
return internal::meta_invoke<Type, Policy>(ctx, std::move(instance), Candidate, args, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<decltype(Candidate)>>::args_type::size>{});
}
/**
@@ -451,11 +451,11 @@ template<typename Type, typename... Args>
* @return A meta any containing the returned value, if any.
*/
template<typename Type, typename Policy = as_is_t, typename Candidate>
[[nodiscard]] meta_any meta_construct_with(const meta_ctx &ctx /*_TODO*/, Candidate &&candidate, meta_any *const args) {
[[nodiscard]] meta_any meta_construct_with(const meta_ctx &ctx, Candidate &&candidate, meta_any *const args) {
if constexpr(meta_function_helper_t<Type, Candidate>::is_static || std::is_class_v<std::remove_cv_t<std::remove_reference_t<Candidate>>>) {
return internal::meta_invoke<Type, Policy>({}, std::forward<Candidate>(candidate), args, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<Candidate>>::args_type::size>{});
return internal::meta_invoke<Type, Policy>(ctx, {}, std::forward<Candidate>(candidate), args, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<Candidate>>::args_type::size>{});
} else {
return internal::meta_invoke<Type, Policy>(*args, std::forward<Candidate>(candidate), args + 1u, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<Candidate>>::args_type::size>{});
return internal::meta_invoke<Type, Policy>(ctx, *args, std::forward<Candidate>(candidate), args + 1u, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<Candidate>>::args_type::size>{});
}
}