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Add GDExtension function to get Object class name

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This commit is contained in:
David Snopek 2023-02-16 09:38:57 -06:00
parent a8453cb333
commit c6b0d4aae3
5 changed files with 43 additions and 1 deletions
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1
core/extension/gdextension.cpp
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@ -314,6 +314,7 @@ void GDExtension::_register_extension_class(GDExtensionClassLibraryPtr p_library
parent_extension->gdextension.children.push_back(&extension->gdextension);
}
extension->gdextension.library = self;
extension->gdextension.parent_class_name = parent_class_name;
extension->gdextension.class_name = class_name;
extension->gdextension.editor_class = self->level_initialized == INITIALIZATION_LEVEL_EDITOR;

14
core/extension/gdextension_interface.cpp
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@ -992,6 +992,19 @@ static GDExtensionObjectPtr gdextension_object_get_instance_from_id(GDObjectInst
return (GDExtensionObjectPtr)ObjectDB::get_instance(ObjectID(p_instance_id));
}
static GDExtensionBool gdextension_object_get_class_name(GDExtensionConstObjectPtr p_object, GDExtensionClassLibraryPtr p_library, GDExtensionUninitializedStringNamePtr r_class_name) {
if (!p_object) {
return false;
}
const Object *o = (const Object *)p_object;
memnew_placement(r_class_name, StringName);
StringName *class_name = reinterpret_cast<StringName *>(r_class_name);
*class_name = o->get_class_name_for_extension((GDExtension *)p_library);
return true;
}
static GDExtensionObjectPtr gdextension_object_cast_to(GDExtensionConstObjectPtr p_object, void *p_class_tag) {
if (!p_object) {
return nullptr;
@ -1176,6 +1189,7 @@ void gdextension_setup_interface() {
REGISTER_INTERFACE_FUNC(object_get_instance_binding);
REGISTER_INTERFACE_FUNC(object_set_instance_binding);
REGISTER_INTERFACE_FUNC(object_set_instance);
REGISTER_INTERFACE_FUNC(object_get_class_name);
REGISTER_INTERFACE_FUNC(object_cast_to);
REGISTER_INTERFACE_FUNC(object_get_instance_from_id);
REGISTER_INTERFACE_FUNC(object_get_instance_id);

13
core/extension/gdextension_interface.h
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@ -1901,6 +1901,19 @@ typedef void (*GDExtensionInterfaceObjectSetInstanceBinding)(GDExtensionObjectPt
*/
typedef void (*GDExtensionInterfaceObjectSetInstance)(GDExtensionObjectPtr p_o, GDExtensionConstStringNamePtr p_classname, GDExtensionClassInstancePtr p_instance); /* p_classname should be a registered extension class and should extend the p_o object's class. */
/**
* @name object_get_class_name
*
* Gets the class name of an Object.
*
* @param p_object A pointer to the Object.
* @param p_library A pointer the library received by the GDExtension's entry point function.
* @param r_class_name A pointer to a String to receive the class name.
*
* @return true if successful in getting the class name; otherwise false.
*/
typedef GDExtensionBool (*GDExtensionInterfaceObjectGetClassName)(GDExtensionConstObjectPtr p_object, GDExtensionClassLibraryPtr p_library, GDExtensionUninitializedStringNamePtr r_class_name);
/**
* @name object_cast_to
*

2
core/object/object.cpp
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@ -1739,7 +1739,7 @@ void *Object::get_instance_binding(void *p_token, const GDExtensionInstanceBindi
break;
}
}
if (unlikely(!binding)) {
if (unlikely(!binding && p_callbacks)) {
uint32_t current_size = next_power_of_2(_instance_binding_count);
uint32_t new_size = next_power_of_2(_instance_binding_count + 1);

14
core/object/object.h
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@ -304,8 +304,10 @@ struct MethodInfo {
// API used to extend in GDExtension and other C compatible compiled languages.
class MethodBind;
class GDExtension;
struct ObjectGDExtension {
GDExtension *library = nullptr;
ObjectGDExtension *parent = nullptr;
List<ObjectGDExtension *> children;
StringName parent_class_name;
@ -798,6 +800,18 @@ public:
return *_class_name_ptr;
}
_FORCE_INLINE_ const StringName &get_class_name_for_extension(const GDExtension *p_library) const {
// Only return the class name per the extension if it matches the given p_library.
if (_extension && _extension->library == p_library) {
return _extension->class_name;
}
// Otherwise, return the name of the built-in class.
if (unlikely(!_class_name_ptr)) {
return *_get_class_namev();
}
return *_class_name_ptr;
}
/* IAPI */
void set(const StringName &p_name, const Variant &p_value, bool *r_valid = nullptr);