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meta: context aware constructors for meta_any

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This commit is contained in:
Michele Caini
2022-10-10 13:03:06 +02:00
parent d61dff45c1
commit 15d78f80a6
1 changed files with 23 additions and 2 deletions
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25
src/entt/meta/meta.hpp
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@@ -216,8 +216,19 @@ public:
*/
template<typename Type, typename... Args>
explicit meta_any(std::in_place_type_t<Type>, Args &&...args)
: meta_any{locator<meta_ctx>::value_or(), std::in_place_type<Type>, std::forward<Args>(args)...} {}
/**
* @brief Constructs a wrapper by directly initializing the new object.
* @tparam Type Type of object to use to initialize the wrapper.
* @tparam Args Types of arguments to use to construct the new instance.
* @param area The context from which to search for meta types.
* @param args Parameters to use to construct the instance.
*/
template<typename Type, typename... Args>
explicit meta_any(const meta_ctx &area, std::in_place_type_t<Type>, Args &&...args)
: storage{std::in_place_type<Type>, std::forward<Args>(args)...},
ctx{&locator<meta_ctx>::value_or()},
ctx{&area},
node{internal::resolve<std::remove_cv_t<std::remove_reference_t<Type>>>(internal::meta_context::from(*ctx))},
vtable{&basic_vtable<std::remove_cv_t<std::remove_reference_t<Type>>>} {}
@@ -228,7 +239,17 @@ public:
*/
template<typename Type, typename = std::enable_if_t<!std::is_same_v<std::decay_t<Type>, meta_any>>>
meta_any(Type &&value)
: meta_any{std::in_place_type<std::decay_t<Type>>, std::forward<Type>(value)} {}
: meta_any{locator<meta_ctx>::value_or(), std::forward<Type>(value)} {}
/**
* @brief Constructs a wrapper from a given value.
* @tparam Type Type of object to use to initialize the wrapper.
* @param area The context from which to search for meta types.
* @param value An instance of an object to use to initialize the wrapper.
*/
template<typename Type, typename = std::enable_if_t<!std::is_same_v<std::decay_t<Type>, meta_any>>>
meta_any(const meta_ctx &area, Type &&value)
: meta_any{area, std::in_place_type<std::decay_t<Type>>, std::forward<Type>(value)} {}
/**
* @brief Copy constructor.