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meta: further refine meta_any vtable

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This commit is contained in:
Michele Caini
2023-08-03 10:12:23 +02:00
parent ace3da4173
commit 0d3511c05f
1 changed files with 10 additions and 14 deletions
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24
src/entt/meta/meta.hpp
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@@ -151,15 +151,13 @@ class meta_any {
enum class operation : std::uint8_t {
deref,
seq,
cseq,
assoc,
cassoc
assoc
};
using vtable_type = void(const operation, const void *, void *);
using vtable_type = void(const operation, const bool, const void *, void *);
template<typename Type>
static void basic_vtable([[maybe_unused]] const operation op, [[maybe_unused]] const void *value, [[maybe_unused]] void *other) {
static void basic_vtable([[maybe_unused]] const operation op, [[maybe_unused]] const bool const_only, [[maybe_unused]] const void *value, [[maybe_unused]] void *other) {
static_assert(std::is_same_v<std::remove_cv_t<std::remove_reference_t<Type>>, Type>, "Invalid type");
if constexpr(!std::is_void_v<Type>) {
@@ -182,15 +180,13 @@ class meta_any {
}
break;
case operation::seq:
case operation::cseq:
if constexpr(is_complete_v<meta_sequence_container_traits<Type>>) {
op == operation::seq ? static_cast<meta_sequence_container *>(other)->rebind<Type>(forward_as_any(*static_cast<Type *>(const_cast<void *>(value)))) : static_cast<meta_sequence_container *>(other)->rebind<Type>(forward_as_any(*static_cast<const Type *>(value)));
const_only ? static_cast<meta_sequence_container *>(other)->rebind<Type>(forward_as_any(*static_cast<const Type *>(value))) : static_cast<meta_sequence_container *>(other)->rebind<Type>(forward_as_any(*static_cast<Type *>(const_cast<void *>(value))));
}
break;
case operation::assoc:
case operation::cassoc:
if constexpr(is_complete_v<meta_associative_container_traits<Type>>) {
op == operation::assoc ? static_cast<meta_associative_container *>(other)->rebind<Type>(forward_as_any(*static_cast<Type *>(const_cast<void *>(value)))) : static_cast<meta_associative_container *>(other)->rebind<Type>(forward_as_any(*static_cast<const Type *>(value)));
const_only ? static_cast<meta_associative_container *>(other)->rebind<Type>(forward_as_any(*static_cast<const Type *>(value))) : static_cast<meta_associative_container *>(other)->rebind<Type>(forward_as_any(*static_cast<Type *>(const_cast<void *>(value))));
}
break;
}
@@ -522,14 +518,14 @@ public:
*/
[[nodiscard]] meta_sequence_container as_sequence_container() noexcept {
meta_sequence_container proxy{*ctx};
vtable(policy() == meta_any_policy::cref ? operation::cseq : operation::seq, std::as_const(*this).data(), &proxy);
vtable(operation::seq, policy() == meta_any_policy::cref, std::as_const(*this).data(), &proxy);
return proxy;
}
/*! @copydoc as_sequence_container */
[[nodiscard]] meta_sequence_container as_sequence_container() const noexcept {
meta_sequence_container proxy{*ctx};
vtable(operation::cseq, data(), &proxy);
vtable(operation::seq, true, data(), &proxy);
return proxy;
}
@@ -539,14 +535,14 @@ public:
*/
[[nodiscard]] meta_associative_container as_associative_container() noexcept {
meta_associative_container proxy{*ctx};
vtable(policy() == meta_any_policy::cref ? operation::cassoc : operation::assoc, std::as_const(*this).data(), &proxy);
vtable(operation::assoc, policy() == meta_any_policy::cref, std::as_const(*this).data(), &proxy);
return proxy;
}
/*! @copydoc as_associative_container */
[[nodiscard]] meta_associative_container as_associative_container() const noexcept {
meta_associative_container proxy{*ctx};
vtable(operation::cassoc, data(), &proxy);
vtable(operation::assoc, true, data(), &proxy);
return proxy;
}
@@ -557,7 +553,7 @@ public:
*/
[[nodiscard]] meta_any operator*() const noexcept {
meta_any ret{meta_ctx_arg, *ctx};
vtable(operation::deref, storage.data(), &ret);
vtable(operation::deref, true, storage.data(), &ret);
return ret;
}