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meta: turn meta_handle into a context aware wrapper

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This commit is contained in:
Michele Caini
2022-10-11 15:24:23 +02:00
parent acc6390312
commit d79cb5ca98
1 changed files with 25 additions and 9 deletions
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34
src/entt/meta/meta.hpp
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@@ -657,6 +657,30 @@ struct meta_handle {
*/
meta_handle &operator=(meta_handle &&) = default;
/**
* @brief Creates a handle that points to an unmanaged object.
* @param value An instance of an object to use to initialize the handle.
*/
meta_handle(meta_any &value) noexcept
: any{value.as_ref()} {}
/**
* @brief Creates a handle that points to an unmanaged object.
* @param value An instance of an object to use to initialize the handle.
*/
meta_handle(const meta_any &value) noexcept
: any{value.as_ref()} {}
/**
* @brief Creates a handle that points to an unmanaged object.
* @tparam Type Type of object to use to initialize the handle.
* @param area The context from which to search for meta types.
* @param value An instance of an object to use to initialize the handle.
*/
template<typename Type>
meta_handle(const meta_ctx &ctx, Type &value) noexcept
: any{ctx, std::in_place_type<Type &>, value} {}
/**
* @brief Creates a handle that points to an unmanaged object.
* @tparam Type Type of object to use to initialize the handle.
@@ -664,15 +688,7 @@ struct meta_handle {
*/
template<typename Type, typename = std::enable_if_t<!std::is_same_v<std::decay_t<Type>, meta_handle>>>
meta_handle(Type &value) noexcept
: meta_handle{} {
if constexpr(std::is_same_v<std::decay_t<Type>, meta_any>) {
any = value.as_ref();
} else {
any.emplace<Type &>(value);
}
}
// TODO context aware constructor with value
: meta_handle{locator<meta_ctx>::value_or(), value} {}
/**
* @brief Returns false if a handle is invalid, true otherwise.