From 3bf42c6ff3805a0d42bbc661794a95ff31bedc26 Mon Sep 17 00:00:00 2001
From: untodesu <kirill@untode.su>
Date: Sat, 15 Mar 2025 16:22:09 +0500
Subject: Add whatever I was working on for the last month

---
 deps/include/entt/meta/utility.hpp | 539 +++++++++++++++++++++++++++++++++++++
 1 file changed, 539 insertions(+)
 create mode 100644 deps/include/entt/meta/utility.hpp

(limited to 'deps/include/entt/meta/utility.hpp')

diff --git a/deps/include/entt/meta/utility.hpp b/deps/include/entt/meta/utility.hpp
new file mode 100644
index 0000000..613d894
--- /dev/null
+++ b/deps/include/entt/meta/utility.hpp
@@ -0,0 +1,539 @@
+#ifndef ENTT_META_UTILITY_HPP
+#define ENTT_META_UTILITY_HPP
+
+#include <cstddef>
+#include <functional>
+#include <type_traits>
+#include <utility>
+#include "../core/type_traits.hpp"
+#include "../locator/locator.hpp"
+#include "meta.hpp"
+#include "node.hpp"
+#include "policy.hpp"
+
+namespace entt {
+
+/**
+ * @brief Meta function descriptor traits.
+ * @tparam Ret Function return type.
+ * @tparam Args Function arguments.
+ * @tparam Static Function staticness.
+ * @tparam Const Function constness.
+ */
+template<typename Ret, typename Args, bool Static, bool Const>
+struct meta_function_descriptor_traits {
+    /*! @brief Meta function return type. */
+    using return_type = Ret;
+    /*! @brief Meta function arguments. */
+    using args_type = Args;
+
+    /*! @brief True if the meta function is static, false otherwise. */
+    static constexpr bool is_static = Static;
+    /*! @brief True if the meta function is const, false otherwise. */
+    static constexpr bool is_const = Const;
+};
+
+/*! @brief Primary template isn't defined on purpose. */
+template<typename, typename>
+struct meta_function_descriptor;
+
+/**
+ * @brief Meta function descriptor.
+ * @tparam Type Reflected type to which the meta function is associated.
+ * @tparam Ret Function return type.
+ * @tparam Class Actual owner of the member function.
+ * @tparam Args Function arguments.
+ */
+template<typename Type, typename Ret, typename Class, typename... Args>
+struct meta_function_descriptor<Type, Ret (Class::*)(Args...) const>
+    : meta_function_descriptor_traits<
+          Ret,
+          std::conditional_t<std::is_base_of_v<Class, Type>, type_list<Args...>, type_list<const Class &, Args...>>,
+          !std::is_base_of_v<Class, Type>,
+          true> {};
+
+/**
+ * @brief Meta function descriptor.
+ * @tparam Type Reflected type to which the meta function is associated.
+ * @tparam Ret Function return type.
+ * @tparam Class Actual owner of the member function.
+ * @tparam Args Function arguments.
+ */
+template<typename Type, typename Ret, typename Class, typename... Args>
+struct meta_function_descriptor<Type, Ret (Class::*)(Args...)>
+    : meta_function_descriptor_traits<
+          Ret,
+          std::conditional_t<std::is_base_of_v<Class, Type>, type_list<Args...>, type_list<Class &, Args...>>,
+          !std::is_base_of_v<Class, Type>,
+          false> {};
+
+/**
+ * @brief Meta function descriptor.
+ * @tparam Type Reflected type to which the meta data is associated.
+ * @tparam Class Actual owner of the data member.
+ * @tparam Ret Data member type.
+ */
+template<typename Type, typename Ret, typename Class>
+struct meta_function_descriptor<Type, Ret Class::*>
+    : meta_function_descriptor_traits<
+          Ret &,
+          std::conditional_t<std::is_base_of_v<Class, Type>, type_list<>, type_list<Class &>>,
+          !std::is_base_of_v<Class, Type>,
+          false> {};
+
+/**
+ * @brief Meta function descriptor.
+ * @tparam Type Reflected type to which the meta function is associated.
+ * @tparam Ret Function return type.
+ * @tparam MaybeType First function argument.
+ * @tparam Args Other function arguments.
+ */
+template<typename Type, typename Ret, typename MaybeType, typename... Args>
+struct meta_function_descriptor<Type, Ret (*)(MaybeType, Args...)>
+    : meta_function_descriptor_traits<
+          Ret,
+          std::conditional_t<
+              std::is_same_v<std::remove_cv_t<std::remove_reference_t<MaybeType>>, Type> || std::is_base_of_v<std::remove_cv_t<std::remove_reference_t<MaybeType>>, Type>,
+              type_list<Args...>,
+              type_list<MaybeType, Args...>>,
+          !(std::is_same_v<std::remove_cv_t<std::remove_reference_t<MaybeType>>, Type> || std::is_base_of_v<std::remove_cv_t<std::remove_reference_t<MaybeType>>, Type>),
+          std::is_const_v<std::remove_reference_t<MaybeType>> && (std::is_same_v<std::remove_cv_t<std::remove_reference_t<MaybeType>>, Type> || std::is_base_of_v<std::remove_cv_t<std::remove_reference_t<MaybeType>>, Type>)> {};
+
+/**
+ * @brief Meta function descriptor.
+ * @tparam Type Reflected type to which the meta function is associated.
+ * @tparam Ret Function return type.
+ */
+template<typename Type, typename Ret>
+struct meta_function_descriptor<Type, Ret (*)()>
+    : meta_function_descriptor_traits<
+          Ret,
+          type_list<>,
+          true,
+          false> {};
+
+/**
+ * @brief Meta function helper.
+ *
+ * Converts a function type to be associated with a reflected type into its meta
+ * function descriptor.
+ *
+ * @tparam Type Reflected type to which the meta function is associated.
+ * @tparam Candidate The actual function to associate with the reflected type.
+ */
+template<typename Type, typename Candidate>
+class meta_function_helper {
+    template<typename Ret, typename... Args, typename Class>
+    static constexpr meta_function_descriptor<Type, Ret (Class::*)(Args...) const> get_rid_of_noexcept(Ret (Class::*)(Args...) const);
+
+    template<typename Ret, typename... Args, typename Class>
+    static constexpr meta_function_descriptor<Type, Ret (Class::*)(Args...)> get_rid_of_noexcept(Ret (Class::*)(Args...));
+
+    template<typename Ret, typename Class>
+    static constexpr meta_function_descriptor<Type, Ret Class::*> get_rid_of_noexcept(Ret Class::*);
+
+    template<typename Ret, typename... Args>
+    static constexpr meta_function_descriptor<Type, Ret (*)(Args...)> get_rid_of_noexcept(Ret (*)(Args...));
+
+    template<typename Class>
+    static constexpr meta_function_descriptor<Class, decltype(&Class::operator())> get_rid_of_noexcept(Class);
+
+public:
+    /*! @brief The meta function descriptor of the given function. */
+    using type = decltype(get_rid_of_noexcept(std::declval<Candidate>()));
+};
+
+/**
+ * @brief Helper type.
+ * @tparam Type Reflected type to which the meta function is associated.
+ * @tparam Candidate The actual function to associate with the reflected type.
+ */
+template<typename Type, typename Candidate>
+using meta_function_helper_t = typename meta_function_helper<Type, Candidate>::type;
+
+/**
+ * @brief Wraps a value depending on the given policy.
+ *
+ * This function always returns a wrapped value in the requested context.<br/>
+ * Therefore, if the passed value is itself a wrapped object with a different
+ * context, it undergoes a rebinding to the requested context.
+ *
+ * @tparam Policy Optional policy (no policy set by default).
+ * @tparam Type Type of value to wrap.
+ * @param ctx The context from which to search for meta types.
+ * @param value Value to wrap.
+ * @return A meta any containing the returned value, if any.
+ */
+template<typename Policy = as_is_t, typename Type>
+[[nodiscard]] std::enable_if_t<is_meta_policy_v<Policy>, meta_any> meta_dispatch(const meta_ctx &ctx, [[maybe_unused]] Type &&value) {
+    if constexpr(std::is_same_v<Policy, as_void_t>) {
+        return meta_any{ctx, std::in_place_type<void>};
+    } else if constexpr(std::is_same_v<Policy, as_ref_t>) {
+        return meta_any{ctx, std::in_place_type<Type>, value};
+    } else if constexpr(std::is_same_v<Policy, as_cref_t>) {
+        static_assert(std::is_lvalue_reference_v<Type>, "Invalid type");
+        return meta_any{ctx, std::in_place_type<const std::remove_reference_t<Type> &>, std::as_const(value)};
+    } else {
+        return meta_any{ctx, std::forward<Type>(value)};
+    }
+}
+
+/**
+ * @brief Wraps a value depending on the given policy.
+ * @tparam Policy Optional policy (no policy set by default).
+ * @tparam Type Type of value to wrap.
+ * @param value Value to wrap.
+ * @return A meta any containing the returned value, if any.
+ */
+template<typename Policy = as_is_t, typename Type>
+[[nodiscard]] std::enable_if_t<is_meta_policy_v<Policy>, meta_any> meta_dispatch(Type &&value) {
+    return meta_dispatch<Policy, Type>(locator<meta_ctx>::value_or(), std::forward<Type>(value));
+}
+
+/**
+ * @brief Returns the meta type of the i-th element of a list of arguments.
+ * @tparam Type Type list of the actual types of arguments.
+ * @param ctx The context from which to search for meta types.
+ * @param index The index of the element for which to return the meta type.
+ * @return The meta type of the i-th element of the list of arguments.
+ */
+template<typename Type>
+[[nodiscard]] static meta_type meta_arg(const meta_ctx &ctx, const std::size_t index) noexcept {
+    auto &&context = internal::meta_context::from(ctx);
+    return {ctx, internal::meta_arg_node(context, Type{}, index)};
+}
+
+/**
+ * @brief Returns the meta type of the i-th element of a list of arguments.
+ * @tparam Type Type list of the actual types of arguments.
+ * @param index The index of the element for which to return the meta type.
+ * @return The meta type of the i-th element of the list of arguments.
+ */
+template<typename Type>
+[[nodiscard]] static meta_type meta_arg(const std::size_t index) noexcept {
+    return meta_arg<Type>(locator<meta_ctx>::value_or(), index);
+}
+
+/**
+ * @brief Sets the value of a given variable.
+ * @tparam Type Reflected type to which the variable is associated.
+ * @tparam Data The actual variable to set.
+ * @param instance An opaque instance of the underlying type, if required.
+ * @param value Parameter to use to set the variable.
+ * @return True in case of success, false otherwise.
+ */
+template<typename Type, auto Data>
+[[nodiscard]] bool meta_setter([[maybe_unused]] meta_handle instance, [[maybe_unused]] meta_any value) {
+    if constexpr(!std::is_same_v<decltype(Data), Type> && !std::is_same_v<decltype(Data), std::nullptr_t>) {
+        if constexpr(std::is_member_function_pointer_v<decltype(Data)> || std::is_function_v<std::remove_reference_t<std::remove_pointer_t<decltype(Data)>>>) {
+            using descriptor = meta_function_helper_t<Type, decltype(Data)>;
+            using data_type = type_list_element_t<descriptor::is_static, typename descriptor::args_type>;
+
+            if(auto *const clazz = instance->try_cast<Type>(); clazz && value.allow_cast<data_type>()) {
+                std::invoke(Data, *clazz, value.cast<data_type>());
+                return true;
+            }
+        } else if constexpr(std::is_member_object_pointer_v<decltype(Data)>) {
+            using data_type = std::remove_reference_t<typename meta_function_helper_t<Type, decltype(Data)>::return_type>;
+
+            if constexpr(!std::is_array_v<data_type> && !std::is_const_v<data_type>) {
+                if(auto *const clazz = instance->try_cast<Type>(); clazz && value.allow_cast<data_type>()) {
+                    std::invoke(Data, *clazz) = value.cast<data_type>();
+                    return true;
+                }
+            }
+        } else {
+            using data_type = std::remove_reference_t<decltype(*Data)>;
+
+            if constexpr(!std::is_array_v<data_type> && !std::is_const_v<data_type>) {
+                if(value.allow_cast<data_type>()) {
+                    *Data = value.cast<data_type>();
+                    return true;
+                }
+            }
+        }
+    }
+
+    return false;
+}
+
+/**
+ * @brief Gets the value of a given variable.
+ *
+ * @warning
+ * The context provided is used only for the return type.<br/>
+ * It's up to the caller to bind the arguments to the right context(s).
+ *
+ * @tparam Type Reflected type to which the variable is associated.
+ * @tparam Data The actual variable to get.
+ * @tparam Policy Optional policy (no policy set by default).
+ * @param ctx The context from which to search for meta types.
+ * @param instance An opaque instance of the underlying type, if required.
+ * @return A meta any containing the value of the underlying variable.
+ */
+template<typename Type, auto Data, typename Policy = as_is_t>
+[[nodiscard]] std::enable_if_t<is_meta_policy_v<Policy>, meta_any> meta_getter(const meta_ctx &ctx, [[maybe_unused]] meta_handle instance) {
+    if constexpr(std::is_member_pointer_v<decltype(Data)> || std::is_function_v<std::remove_reference_t<std::remove_pointer_t<decltype(Data)>>>) {
+        if constexpr(!std::is_array_v<std::remove_cv_t<std::remove_reference_t<std::invoke_result_t<decltype(Data), Type &>>>>) {
+            if constexpr(std::is_invocable_v<decltype(Data), Type &>) {
+                if(auto *clazz = instance->try_cast<Type>(); clazz) {
+                    return meta_dispatch<Policy>(ctx, std::invoke(Data, *clazz));
+                }
+            }
+
+            if constexpr(std::is_invocable_v<decltype(Data), const Type &>) {
+                if(auto *fallback = instance->try_cast<const Type>(); fallback) {
+                    return meta_dispatch<Policy>(ctx, std::invoke(Data, *fallback));
+                }
+            }
+        }
+
+        return meta_any{meta_ctx_arg, ctx};
+    } else if constexpr(std::is_pointer_v<decltype(Data)>) {
+        if constexpr(std::is_array_v<std::remove_pointer_t<decltype(Data)>>) {
+            return meta_any{meta_ctx_arg, ctx};
+        } else {
+            return meta_dispatch<Policy>(ctx, *Data);
+        }
+    } else {
+        return meta_dispatch<Policy>(ctx, Data);
+    }
+}
+
+/**
+ * @brief Gets the value of a given variable.
+ * @tparam Type Reflected type to which the variable is associated.
+ * @tparam Data The actual variable to get.
+ * @tparam Policy Optional policy (no policy set by default).
+ * @param instance An opaque instance of the underlying type, if required.
+ * @return A meta any containing the value of the underlying variable.
+ */
+template<typename Type, auto Data, typename Policy = as_is_t>
+[[nodiscard]] std::enable_if_t<is_meta_policy_v<Policy>, meta_any> meta_getter(meta_handle instance) {
+    return meta_getter<Type, Data, Policy>(locator<meta_ctx>::value_or(), std::move(instance));
+}
+
+/*! @cond TURN_OFF_DOXYGEN */
+namespace internal {
+
+template<typename Policy, typename Candidate, typename... Args>
+[[nodiscard]] meta_any meta_invoke_with_args(const meta_ctx &ctx, Candidate &&candidate, Args &&...args) {
+    if constexpr(std::is_void_v<decltype(std::invoke(std::forward<Candidate>(candidate), args...))>) {
+        std::invoke(std::forward<Candidate>(candidate), args...);
+        return meta_any{ctx, std::in_place_type<void>};
+    } else {
+        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(const meta_ctx &ctx, [[maybe_unused]] meta_handle instance, Candidate &&candidate, [[maybe_unused]] meta_any *const args, std::index_sequence<Index...>) {
+    using descriptor = meta_function_helper_t<Type, std::remove_reference_t<Candidate>>;
+
+    // NOLINTBEGIN(cppcoreguidelines-pro-bounds-pointer-arithmetic) - waiting for C++20 (and std::span)
+    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>(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>(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>(ctx, std::forward<Candidate>(candidate), (args + Index)->cast<type_list_element_t<Index, typename descriptor::args_type>>()...);
+        }
+    }
+    // NOLINTEND(cppcoreguidelines-pro-bounds-pointer-arithmetic)
+
+    return meta_any{meta_ctx_arg, ctx};
+}
+
+template<typename Type, typename... Args, std::size_t... Index>
+[[nodiscard]] meta_any meta_construct(const meta_ctx &ctx, meta_any *const args, std::index_sequence<Index...>) {
+    // NOLINTBEGIN(cppcoreguidelines-pro-bounds-pointer-arithmetic) - waiting for C++20 (and std::span)
+    if(((args + Index)->allow_cast<Args>() && ...)) {
+        return meta_any{ctx, std::in_place_type<Type>, (args + Index)->cast<Args>()...};
+    }
+    // NOLINTEND(cppcoreguidelines-pro-bounds-pointer-arithmetic)
+
+    return meta_any{meta_ctx_arg, ctx};
+}
+
+} // namespace internal
+/*! @endcond */
+
+/**
+ * @brief Tries to _invoke_ an object given a list of erased parameters.
+ *
+ * @warning
+ * The context provided is used only for the return type.<br/>
+ * It's up to the caller to bind the arguments to the right context(s).
+ *
+ * @tparam Type Reflected type to which the object to _invoke_ is associated.
+ * @tparam Policy Optional policy (no policy set by default).
+ * @param ctx The context from which to search for meta types.
+ * @tparam Candidate The type of the actual object to _invoke_.
+ * @param instance An opaque instance of the underlying type, if required.
+ * @param candidate The actual object to _invoke_.
+ * @param args Parameters to use to _invoke_ the object.
+ * @return A meta any containing the returned value, if any.
+ */
+template<typename Type, typename Policy = as_is_t, typename Candidate>
+[[nodiscard]] std::enable_if_t<is_meta_policy_v<Policy>, meta_any> meta_invoke(const meta_ctx &ctx, meta_handle instance, Candidate &&candidate, meta_any *const args) {
+    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>{});
+}
+
+/**
+ * @brief Tries to _invoke_ an object given a list of erased parameters.
+ * @tparam Type Reflected type to which the object to _invoke_ is associated.
+ * @tparam Policy Optional policy (no policy set by default).
+ * @tparam Candidate The type of the actual object to _invoke_.
+ * @param instance An opaque instance of the underlying type, if required.
+ * @param candidate The actual object to _invoke_.
+ * @param args Parameters to use to _invoke_ the object.
+ * @return A meta any containing the returned value, if any.
+ */
+template<typename Type, typename Policy = as_is_t, typename Candidate>
+[[nodiscard]] std::enable_if_t<is_meta_policy_v<Policy>, meta_any> meta_invoke(meta_handle instance, Candidate &&candidate, meta_any *const args) {
+    return meta_invoke<Type, Policy>(locator<meta_ctx>::value_or(), std::move(instance), std::forward<Candidate>(candidate), args);
+}
+
+/**
+ * @brief Tries to invoke a function given a list of erased parameters.
+ *
+ * @warning
+ * The context provided is used only for the return type.<br/>
+ * It's up to the caller to bind the arguments to the right context(s).
+ *
+ * @tparam Type Reflected type to which the function is associated.
+ * @tparam Candidate The actual function to invoke.
+ * @tparam Policy Optional policy (no policy set by default).
+ * @param ctx The context from which to search for meta types.
+ * @param instance An opaque instance of the underlying type, if required.
+ * @param args Parameters to use to invoke the function.
+ * @return A meta any containing the returned value, if any.
+ */
+template<typename Type, auto Candidate, typename Policy = as_is_t>
+[[nodiscard]] std::enable_if_t<is_meta_policy_v<Policy>, 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>{});
+}
+
+/**
+ * @brief Tries to invoke a function given a list of erased parameters.
+ * @tparam Type Reflected type to which the function is associated.
+ * @tparam Candidate The actual function to invoke.
+ * @tparam Policy Optional policy (no policy set by default).
+ * @param instance An opaque instance of the underlying type, if required.
+ * @param args Parameters to use to invoke the function.
+ * @return A meta any containing the returned value, if any.
+ */
+template<typename Type, auto Candidate, typename Policy = as_is_t>
+[[nodiscard]] std::enable_if_t<is_meta_policy_v<Policy>, meta_any> meta_invoke(meta_handle instance, meta_any *const args) {
+    return meta_invoke<Type, Candidate, Policy>(locator<meta_ctx>::value_or(), std::move(instance), args);
+}
+
+/**
+ * @brief Tries to construct an instance given a list of erased parameters.
+ *
+ * @warning
+ * The context provided is used only for the return type.<br/>
+ * It's up to the caller to bind the arguments to the right context(s).
+ *
+ * @tparam Type Actual type of the instance to construct.
+ * @tparam Args Types of arguments expected.
+ * @param ctx The context from which to search for meta types.
+ * @param args Parameters to use to construct the instance.
+ * @return A meta any containing the new instance, if any.
+ */
+template<typename Type, typename... Args>
+[[nodiscard]] meta_any meta_construct(const meta_ctx &ctx, meta_any *const args) {
+    return internal::meta_construct<Type, Args...>(ctx, args, std::index_sequence_for<Args...>{});
+}
+
+/**
+ * @brief Tries to construct an instance given a list of erased parameters.
+ * @tparam Type Actual type of the instance to construct.
+ * @tparam Args Types of arguments expected.
+ * @param args Parameters to use to construct the instance.
+ * @return A meta any containing the new instance, if any.
+ */
+template<typename Type, typename... Args>
+[[nodiscard]] meta_any meta_construct(meta_any *const args) {
+    return meta_construct<Type, Args...>(locator<meta_ctx>::value_or(), args);
+}
+
+/**
+ * @brief Tries to construct an instance given a list of erased parameters.
+ *
+ * @warning
+ * The context provided is used only for the return type.<br/>
+ * It's up to the caller to bind the arguments to the right context(s).
+ *
+ * @tparam Type Reflected type to which the object to _invoke_ is associated.
+ * @tparam Policy Optional policy (no policy set by default).
+ * @tparam Candidate The type of the actual object to _invoke_.
+ * @param ctx The context from which to search for meta types.
+ * @param candidate The actual object to _invoke_.
+ * @param args Parameters to use to _invoke_ the object.
+ * @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(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>(ctx, {}, std::forward<Candidate>(candidate), args, std::make_index_sequence<meta_function_helper_t<Type, std::remove_reference_t<Candidate>>::args_type::size>{});
+    } else {
+        // NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic) - waiting for C++20 (and std::span)
+        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>{});
+    }
+}
+
+/**
+ * @brief Tries to construct an instance given a list of erased parameters.
+ * @tparam Type Reflected type to which the object to _invoke_ is associated.
+ * @tparam Policy Optional policy (no policy set by default).
+ * @tparam Candidate The type of the actual object to _invoke_.
+ * @param candidate The actual object to _invoke_.
+ * @param args Parameters to use to _invoke_ the object.
+ * @return A meta any containing the returned value, if any.
+ */
+template<typename Type, typename Policy = as_is_t, typename Candidate>
+[[nodiscard]] std::enable_if_t<is_meta_policy_v<Policy>, meta_any> meta_construct(Candidate &&candidate, meta_any *const args) {
+    return meta_construct<Type, Policy>(locator<meta_ctx>::value_or(), std::forward<Candidate>(candidate), args);
+}
+
+/**
+ * @brief Tries to construct an instance given a list of erased parameters.
+ *
+ * @warning
+ * The context provided is used only for the return type.<br/>
+ * It's up to the caller to bind the arguments to the right context(s).
+ *
+ * @tparam Type Reflected type to which the function is associated.
+ * @tparam Candidate The actual function to invoke.
+ * @tparam Policy Optional policy (no policy set by default).
+ * @param ctx The context from which to search for meta types.
+ * @param args Parameters to use to invoke the function.
+ * @return A meta any containing the returned value, if any.
+ */
+template<typename Type, auto Candidate, typename Policy = as_is_t>
+[[nodiscard]] std::enable_if_t<is_meta_policy_v<Policy>, meta_any> meta_construct(const meta_ctx &ctx, meta_any *const args) {
+    return meta_construct<Type, Policy>(ctx, Candidate, args);
+}
+
+/**
+ * @brief Tries to construct an instance given a list of erased parameters.
+ * @tparam Type Reflected type to which the function is associated.
+ * @tparam Candidate The actual function to invoke.
+ * @tparam Policy Optional policy (no policy set by default).
+ * @param args Parameters to use to invoke the function.
+ * @return A meta any containing the returned value, if any.
+ */
+template<typename Type, auto Candidate, typename Policy = as_is_t>
+[[nodiscard]] std::enable_if_t<is_meta_policy_v<Policy>, meta_any> meta_construct(meta_any *const args) {
+    return meta_construct<Type, Candidate, Policy>(locator<meta_ctx>::value_or(), args);
+}
+
+} // namespace entt
+
+#endif
-- 
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