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meta: reduce instantiations

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This commit is contained in:
Michele Caini
2020-05-29 00:30:20 +02:00
parent 0273b7606e
commit c8a6465688
2 changed files with 62 additions and 57 deletions
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112
src/entt/meta/factory.hpp
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@@ -88,64 +88,62 @@ meta_any construct(meta_any * const args, std::index_sequence<Indexes...>) {
}
template<bool Const, typename Type, auto Data>
template<typename Type, auto Data>
bool setter([[maybe_unused]] meta_any instance, [[maybe_unused]] meta_any index, [[maybe_unused]] meta_any value) {
bool accepted = false;
if constexpr(!Const) {
if constexpr(std::is_function_v<std::remove_reference_t<std::remove_pointer_t<decltype(Data)>>> || std::is_member_function_pointer_v<decltype(Data)>) {
using helper_type = meta_function_helper_t<decltype(Data)>;
using data_type = std::tuple_element_t<!std::is_member_function_pointer_v<decltype(Data)>, typename helper_type::args_type>;
static_assert(std::is_invocable_v<decltype(Data), Type &, data_type>, "Invalid function or member function");
auto * const clazz = instance.try_cast<Type>();
if constexpr(std::is_function_v<std::remove_reference_t<std::remove_pointer_t<decltype(Data)>>> || std::is_member_function_pointer_v<decltype(Data)>) {
using helper_type = meta_function_helper_t<decltype(Data)>;
using data_type = std::tuple_element_t<!std::is_member_function_pointer_v<decltype(Data)>, typename helper_type::args_type>;
static_assert(std::is_invocable_v<decltype(Data), Type &, data_type>, "Invalid function or member function");
auto * const clazz = instance.try_cast<Type>();
auto * const direct = value.try_cast<data_type>();
if(clazz && (direct || value.convert<data_type>())) {
std::invoke(Data, *clazz, direct ? *direct : value.cast<data_type>());
accepted = true;
}
} else if constexpr(std::is_member_object_pointer_v<decltype(Data)>) {
using data_type = std::remove_cv_t<std::remove_reference_t<decltype(std::declval<Type>().*Data)>>;
static_assert(std::is_invocable_v<decltype(Data), Type *>, "Invalid data member");
auto * const clazz = instance.try_cast<Type>();
if constexpr(std::is_array_v<data_type>) {
using underlying_type = std::remove_extent_t<data_type>;
auto * const direct = value.try_cast<underlying_type>();
auto * const idx = index.try_cast<std::size_t>();
if(clazz && idx && (direct || value.convert<underlying_type>())) {
std::invoke(Data, clazz)[*idx] = direct ? *direct : value.cast<underlying_type>();
accepted = true;
}
} else {
auto * const direct = value.try_cast<data_type>();
if(clazz && (direct || value.convert<data_type>())) {
std::invoke(Data, *clazz, direct ? *direct : value.cast<data_type>());
std::invoke(Data, clazz) = (direct ? *direct : value.cast<data_type>());
accepted = true;
}
} else if constexpr(std::is_member_object_pointer_v<decltype(Data)>) {
using data_type = std::remove_cv_t<std::remove_reference_t<decltype(std::declval<Type>().*Data)>>;
static_assert(std::is_invocable_v<decltype(Data), Type *>, "Invalid data member");
auto * const clazz = instance.try_cast<Type>();
}
} else {
static_assert(std::is_pointer_v<decltype(Data)>, "Invalid pointer to data type");
using data_type = std::remove_cv_t<std::remove_reference_t<decltype(*Data)>>;
if constexpr(std::is_array_v<data_type>) {
using underlying_type = std::remove_extent_t<data_type>;
auto * const direct = value.try_cast<underlying_type>();
auto * const idx = index.try_cast<std::size_t>();
if constexpr(std::is_array_v<data_type>) {
using underlying_type = std::remove_extent_t<data_type>;
auto * const direct = value.try_cast<underlying_type>();
auto * const idx = index.try_cast<std::size_t>();
if(clazz && idx && (direct || value.convert<underlying_type>())) {
std::invoke(Data, clazz)[*idx] = direct ? *direct : value.cast<underlying_type>();
accepted = true;
}
} else {
auto * const direct = value.try_cast<data_type>();
if(clazz && (direct || value.convert<data_type>())) {
std::invoke(Data, clazz) = (direct ? *direct : value.cast<data_type>());
accepted = true;
}
if(idx && (direct || value.convert<underlying_type>())) {
(*Data)[*idx] = (direct ? *direct : value.cast<underlying_type>());
accepted = true;
}
} else {
static_assert(std::is_pointer_v<decltype(Data)>, "Invalid pointer to data type");
using data_type = std::remove_cv_t<std::remove_reference_t<decltype(*Data)>>;
auto * const direct = value.try_cast<data_type>();
if constexpr(std::is_array_v<data_type>) {
using underlying_type = std::remove_extent_t<data_type>;
auto * const direct = value.try_cast<underlying_type>();
auto * const idx = index.try_cast<std::size_t>();
if(idx && (direct || value.convert<underlying_type>())) {
(*Data)[*idx] = (direct ? *direct : value.cast<underlying_type>());
accepted = true;
}
} else {
auto * const direct = value.try_cast<data_type>();
if(direct || value.convert<data_type>()) {
*Data = (direct ? *direct : value.cast<data_type>());
accepted = true;
}
if(direct || value.convert<data_type>()) {
*Data = (direct ? *direct : value.cast<data_type>());
accepted = true;
}
}
}
@@ -625,9 +623,8 @@ public:
nullptr,
nullptr,
true,
true,
&internal::meta_info<Type>::resolve,
&internal::setter<true, Type, Data>,
nullptr,
&internal::getter<Type, Data, Policy>
};
@@ -640,10 +637,15 @@ public:
type,
nullptr,
nullptr,
std::is_const_v<data_type>,
!std::is_member_object_pointer_v<decltype(Data)>,
&internal::meta_info<data_type>::resolve,
&internal::setter<std::is_const_v<data_type>, Type, Data>,
[]() -> decltype(internal::meta_data_node::set) {
if constexpr(std::is_const_v<data_type>) {
return nullptr;
} else {
return &internal::setter<Type, Data>;
}
}(),
&internal::getter<Type, Data, Policy>
};
@@ -656,10 +658,15 @@ public:
type,
nullptr,
nullptr,
std::is_const_v<data_type>,
!std::is_member_object_pointer_v<decltype(Data)>,
&internal::meta_info<data_type>::resolve,
&internal::setter<std::is_const_v<data_type>, Type, Data>,
[]() -> decltype(internal::meta_data_node::set) {
if constexpr(std::is_const_v<data_type>) {
return nullptr;
} else {
return &internal::setter<Type, Data>;
}
}(),
&internal::getter<Type, Data, Policy>
};
@@ -707,9 +714,8 @@ public:
nullptr,
nullptr,
false,
false,
&internal::meta_info<underlying_type>::resolve,
&internal::setter<false, Type, Setter>,
&internal::setter<Type, Setter>,
&internal::getter<Type, Getter, Policy>
};

7
src/entt/meta/meta.hpp
View File

@@ -76,7 +76,6 @@ struct meta_data_node {
meta_type_node * const parent;
meta_data_node * next;
meta_prop_node * prop;
const bool is_const;
const bool is_static;
meta_type_node *(* const type)() ENTT_NOEXCEPT;
bool(* const set)(meta_any, meta_any, meta_any);
@@ -912,7 +911,7 @@ struct meta_data {
* @return True if the meta data is constant, false otherwise.
*/
bool is_const() const ENTT_NOEXCEPT {
return node->is_const;
return (node->set == nullptr);
}
/**
@@ -942,7 +941,7 @@ struct meta_data {
*/
template<typename Type>
bool set(meta_handle instance, Type &&value) const {
return node->set(*instance, {}, std::forward<Type>(value));
return node->set && node->set(*instance, {}, std::forward<Type>(value));
}
/**
@@ -963,7 +962,7 @@ struct meta_data {
template<typename Type>
bool set(meta_handle instance, std::size_t index, Type &&value) const {
ENTT_ASSERT(index < node->type()->extent);
return node->set(*instance, index, std::forward<Type>(value));
return node->set && node->set(*instance, index, std::forward<Type>(value));
}
/**