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meta: extrapolate can_cast_or_convert

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This commit is contained in:
Michele Caini
2021-09-13 11:54:40 +02:00
parent d3c98ad334
commit e857aa0640
2 changed files with 23 additions and 22 deletions
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24
src/entt/meta/meta.hpp
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@@ -1033,30 +1033,10 @@ private:
/*! @brief Opaque wrapper for types. */
class meta_type {
[[nodiscard]] static bool can_cast_or_convert(const internal::meta_type_node *type, const meta_type other) ENTT_NOEXCEPT {
if(type->info == other.info()) {
return true;
}
for(const auto *curr = type->conv; curr; curr = curr->next) {
if(curr->type->info == other.info()) {
return true;
}
}
for(const auto *curr = type->base; curr; curr = curr->next) {
if(can_cast_or_convert(curr->type, other)) {
return true;
}
}
return (type->conversion_helper && other.node->conversion_helper);
}
template<typename... Args, auto... Index>
[[nodiscard]] static const internal::meta_ctor_node * ctor(const internal::meta_ctor_node *curr, std::index_sequence<Index...>) {
for(; curr; curr = curr->next) {
if(curr->arity == sizeof...(Args) && (can_cast_or_convert(internal::meta_node<std::remove_const_t<std::remove_reference_t<Args>>>::resolve(), curr->arg(Index)) && ...)) {
if(curr->arity == sizeof...(Args) && (internal::can_cast_or_convert(internal::meta_node<std::remove_const_t<std::remove_reference_t<Args>>>::resolve(), curr->arg(Index).node) && ...)) {
return curr;
}
}
@@ -1355,7 +1335,7 @@ public:
for(size_type next{}; next < sz && next == (direct + ext); ++next) {
const auto type = args[next].type();
const auto other = it->arg(next);
type.info() == other.info() ? ++direct : (ext += can_cast_or_convert(type.node, other));
type.info() == other.info() ? ++direct : (ext += internal::can_cast_or_convert(type.node, other.node));
}
if((direct + ext) == sz) {

21
src/entt/meta/node.hpp
View File

@@ -235,6 +235,27 @@ template<auto Member, typename Op>
}
[[nodiscard]] inline bool can_cast_or_convert(const internal::meta_type_node *type, const internal::meta_type_node *other) ENTT_NOEXCEPT {
if(type->info == other->info) {
return true;
}
for(const auto *curr = type->conv; curr; curr = curr->next) {
if(curr->type->info == other->info) {
return true;
}
}
for(const auto *curr = type->base; curr; curr = curr->next) {
if(can_cast_or_convert(curr->type, other)) {
return true;
}
}
return (type->conversion_helper && other->conversion_helper);
}
}