Sync with 4.3-stable

Drop redundant 'godot' subfolder.

gdextension_interface.h

@@ -96,6 +96,7 @@ typedef enum {
 	GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR2_ARRAY,
 	GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR3_ARRAY,
 	GDEXTENSION_VARIANT_TYPE_PACKED_COLOR_ARRAY,
+	GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR4_ARRAY,
 
 	GDEXTENSION_VARIANT_TYPE_VARIANT_MAX
 } GDExtensionVariantType;
@@ -256,16 +257,22 @@ typedef struct {
 
 typedef const GDExtensionPropertyInfo *(*GDExtensionClassGetPropertyList)(GDExtensionClassInstancePtr p_instance, uint32_t *r_count);
 typedef void (*GDExtensionClassFreePropertyList)(GDExtensionClassInstancePtr p_instance, const GDExtensionPropertyInfo *p_list);
+typedef void (*GDExtensionClassFreePropertyList2)(GDExtensionClassInstancePtr p_instance, const GDExtensionPropertyInfo *p_list, uint32_t p_count);
 typedef GDExtensionBool (*GDExtensionClassPropertyCanRevert)(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name);
 typedef GDExtensionBool (*GDExtensionClassPropertyGetRevert)(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionVariantPtr r_ret);
-typedef void (*GDExtensionClassNotification)(GDExtensionClassInstancePtr p_instance, int32_t p_what);
+typedef GDExtensionBool (*GDExtensionClassValidateProperty)(GDExtensionClassInstancePtr p_instance, GDExtensionPropertyInfo *p_property);
+typedef void (*GDExtensionClassNotification)(GDExtensionClassInstancePtr p_instance, int32_t p_what); // Deprecated. Use GDExtensionClassNotification2 instead.
+typedef void (*GDExtensionClassNotification2)(GDExtensionClassInstancePtr p_instance, int32_t p_what, GDExtensionBool p_reversed);
 typedef void (*GDExtensionClassToString)(GDExtensionClassInstancePtr p_instance, GDExtensionBool *r_is_valid, GDExtensionStringPtr p_out);
 typedef void (*GDExtensionClassReference)(GDExtensionClassInstancePtr p_instance);
 typedef void (*GDExtensionClassUnreference)(GDExtensionClassInstancePtr p_instance);
 typedef void (*GDExtensionClassCallVirtual)(GDExtensionClassInstancePtr p_instance, const GDExtensionConstTypePtr *p_args, GDExtensionTypePtr r_ret);
-typedef GDExtensionObjectPtr (*GDExtensionClassCreateInstance)(void *p_userdata);
-typedef void (*GDExtensionClassFreeInstance)(void *p_userdata, GDExtensionClassInstancePtr p_instance);
-typedef GDExtensionClassCallVirtual (*GDExtensionClassGetVirtual)(void *p_userdata, GDExtensionConstStringNamePtr p_name);
+typedef GDExtensionObjectPtr (*GDExtensionClassCreateInstance)(void *p_class_userdata);
+typedef void (*GDExtensionClassFreeInstance)(void *p_class_userdata, GDExtensionClassInstancePtr p_instance);
+typedef GDExtensionClassInstancePtr (*GDExtensionClassRecreateInstance)(void *p_class_userdata, GDExtensionObjectPtr p_object);
+typedef GDExtensionClassCallVirtual (*GDExtensionClassGetVirtual)(void *p_class_userdata, GDExtensionConstStringNamePtr p_name);
+typedef void *(*GDExtensionClassGetVirtualCallData)(void *p_class_userdata, GDExtensionConstStringNamePtr p_name);
+typedef void (*GDExtensionClassCallVirtualWithData)(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, void *p_virtual_call_userdata, const GDExtensionConstTypePtr *p_args, GDExtensionTypePtr r_ret);
 
 typedef struct {
 	GDExtensionBool is_virtual;
@@ -285,7 +292,74 @@ typedef struct {
 	GDExtensionClassGetVirtual get_virtual_func; // Queries a virtual function by name and returns a callback to invoke the requested virtual function.
 	GDExtensionClassGetRID get_rid_func;
 	void *class_userdata; // Per-class user data, later accessible in instance bindings.
-} GDExtensionClassCreationInfo;
+} GDExtensionClassCreationInfo; // Deprecated. Use GDExtensionClassCreationInfo3 instead.
+
+typedef struct {
+	GDExtensionBool is_virtual;
+	GDExtensionBool is_abstract;
+	GDExtensionBool is_exposed;
+	GDExtensionClassSet set_func;
+	GDExtensionClassGet get_func;
+	GDExtensionClassGetPropertyList get_property_list_func;
+	GDExtensionClassFreePropertyList free_property_list_func;
+	GDExtensionClassPropertyCanRevert property_can_revert_func;
+	GDExtensionClassPropertyGetRevert property_get_revert_func;
+	GDExtensionClassValidateProperty validate_property_func;
+	GDExtensionClassNotification2 notification_func;
+	GDExtensionClassToString to_string_func;
+	GDExtensionClassReference reference_func;
+	GDExtensionClassUnreference unreference_func;
+	GDExtensionClassCreateInstance create_instance_func; // (Default) constructor; mandatory. If the class is not instantiable, consider making it virtual or abstract.
+	GDExtensionClassFreeInstance free_instance_func; // Destructor; mandatory.
+	GDExtensionClassRecreateInstance recreate_instance_func;
+	// Queries a virtual function by name and returns a callback to invoke the requested virtual function.
+	GDExtensionClassGetVirtual get_virtual_func;
+	// Paired with `call_virtual_with_data_func`, this is an alternative to `get_virtual_func` for extensions that
+	// need or benefit from extra data when calling virtual functions.
+	// Returns user data that will be passed to `call_virtual_with_data_func`.
+	// Returning `NULL` from this function signals to Godot that the virtual function is not overridden.
+	// Data returned from this function should be managed by the extension and must be valid until the extension is deinitialized.
+	// You should supply either `get_virtual_func`, or `get_virtual_call_data_func` with `call_virtual_with_data_func`.
+	GDExtensionClassGetVirtualCallData get_virtual_call_data_func;
+	// Used to call virtual functions when `get_virtual_call_data_func` is not null.
+	GDExtensionClassCallVirtualWithData call_virtual_with_data_func;
+	GDExtensionClassGetRID get_rid_func;
+	void *class_userdata; // Per-class user data, later accessible in instance bindings.
+} GDExtensionClassCreationInfo2; // Deprecated. Use GDExtensionClassCreationInfo3 instead.
+
+typedef struct {
+	GDExtensionBool is_virtual;
+	GDExtensionBool is_abstract;
+	GDExtensionBool is_exposed;
+	GDExtensionBool is_runtime;
+	GDExtensionClassSet set_func;
+	GDExtensionClassGet get_func;
+	GDExtensionClassGetPropertyList get_property_list_func;
+	GDExtensionClassFreePropertyList2 free_property_list_func;
+	GDExtensionClassPropertyCanRevert property_can_revert_func;
+	GDExtensionClassPropertyGetRevert property_get_revert_func;
+	GDExtensionClassValidateProperty validate_property_func;
+	GDExtensionClassNotification2 notification_func;
+	GDExtensionClassToString to_string_func;
+	GDExtensionClassReference reference_func;
+	GDExtensionClassUnreference unreference_func;
+	GDExtensionClassCreateInstance create_instance_func; // (Default) constructor; mandatory. If the class is not instantiable, consider making it virtual or abstract.
+	GDExtensionClassFreeInstance free_instance_func; // Destructor; mandatory.
+	GDExtensionClassRecreateInstance recreate_instance_func;
+	// Queries a virtual function by name and returns a callback to invoke the requested virtual function.
+	GDExtensionClassGetVirtual get_virtual_func;
+	// Paired with `call_virtual_with_data_func`, this is an alternative to `get_virtual_func` for extensions that
+	// need or benefit from extra data when calling virtual functions.
+	// Returns user data that will be passed to `call_virtual_with_data_func`.
+	// Returning `NULL` from this function signals to Godot that the virtual function is not overridden.
+	// Data returned from this function should be managed by the extension and must be valid until the extension is deinitialized.
+	// You should supply either `get_virtual_func`, or `get_virtual_call_data_func` with `call_virtual_with_data_func`.
+	GDExtensionClassGetVirtualCallData get_virtual_call_data_func;
+	// Used to call virtual functions when `get_virtual_call_data_func` is not null.
+	GDExtensionClassCallVirtualWithData call_virtual_with_data_func;
+	GDExtensionClassGetRID get_rid_func;
+	void *class_userdata; // Per-class user data, later accessible in instance bindings.
+} GDExtensionClassCreationInfo3;
 
 typedef void *GDExtensionClassLibraryPtr;
 
@@ -326,13 +400,18 @@ typedef struct {
 	GDExtensionClassMethodPtrCall ptrcall_func;
 	uint32_t method_flags; // Bitfield of `GDExtensionClassMethodFlags`.
 
-	/* If `has_return_value` is false, `return_value_info` and `return_value_metadata` are ignored. */
+	/* If `has_return_value` is false, `return_value_info` and `return_value_metadata` are ignored.
+	 *
+	 * @todo Consider dropping `has_return_value` and making the other two properties match `GDExtensionMethodInfo` and `GDExtensionClassVirtualMethod` for consistency in future version of this struct.
+	 */
 	GDExtensionBool has_return_value;
 	GDExtensionPropertyInfo *return_value_info;
 	GDExtensionClassMethodArgumentMetadata return_value_metadata;
 
 	/* Arguments: `arguments_info` and `arguments_metadata` are array of size `argument_count`.
 	 * Name and hint information for the argument can be omitted in release builds. Class name should always be present if it applies.
+	 *
+	 * @todo Consider renaming `arguments_info` to `arguments` for consistency in future version of this struct.
 	 */
 	uint32_t argument_count;
 	GDExtensionPropertyInfo *arguments_info;
@@ -343,6 +422,94 @@ typedef struct {
 	GDExtensionVariantPtr *default_arguments;
 } GDExtensionClassMethodInfo;
 
+typedef struct {
+	GDExtensionStringNamePtr name;
+	uint32_t method_flags; // Bitfield of `GDExtensionClassMethodFlags`.
+
+	GDExtensionPropertyInfo return_value;
+	GDExtensionClassMethodArgumentMetadata return_value_metadata;
+
+	uint32_t argument_count;
+	GDExtensionPropertyInfo *arguments;
+	GDExtensionClassMethodArgumentMetadata *arguments_metadata;
+} GDExtensionClassVirtualMethodInfo;
+
+typedef void (*GDExtensionCallableCustomCall)(void *callable_userdata, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_argument_count, GDExtensionVariantPtr r_return, GDExtensionCallError *r_error);
+typedef GDExtensionBool (*GDExtensionCallableCustomIsValid)(void *callable_userdata);
+typedef void (*GDExtensionCallableCustomFree)(void *callable_userdata);
+
+typedef uint32_t (*GDExtensionCallableCustomHash)(void *callable_userdata);
+typedef GDExtensionBool (*GDExtensionCallableCustomEqual)(void *callable_userdata_a, void *callable_userdata_b);
+typedef GDExtensionBool (*GDExtensionCallableCustomLessThan)(void *callable_userdata_a, void *callable_userdata_b);
+
+typedef void (*GDExtensionCallableCustomToString)(void *callable_userdata, GDExtensionBool *r_is_valid, GDExtensionStringPtr r_out);
+
+typedef GDExtensionInt (*GDExtensionCallableCustomGetArgumentCount)(void *callable_userdata, GDExtensionBool *r_is_valid);
+
+typedef struct {
+	/* Only `call_func` and `token` are strictly required, however, `object_id` should be passed if its not a static method.
+	 *
+	 * `token` should point to an address that uniquely identifies the GDExtension (for example, the
+	 * `GDExtensionClassLibraryPtr` passed to the entry symbol function.
+	 *
+	 * `hash_func`, `equal_func`, and `less_than_func` are optional. If not provided both `call_func` and
+	 * `callable_userdata` together are used as the identity of the callable for hashing and comparison purposes.
+	 *
+	 * The hash returned by `hash_func` is cached, `hash_func` will not be called more than once per callable.
+	 *
+	 * `is_valid_func` is necessary if the validity of the callable can change before destruction.
+	 *
+	 * `free_func` is necessary if `callable_userdata` needs to be cleaned up when the callable is freed.
+	 */
+	void *callable_userdata;
+	void *token;
+
+	GDObjectInstanceID object_id;
+
+	GDExtensionCallableCustomCall call_func;
+	GDExtensionCallableCustomIsValid is_valid_func;
+	GDExtensionCallableCustomFree free_func;
+
+	GDExtensionCallableCustomHash hash_func;
+	GDExtensionCallableCustomEqual equal_func;
+	GDExtensionCallableCustomLessThan less_than_func;
+
+	GDExtensionCallableCustomToString to_string_func;
+} GDExtensionCallableCustomInfo; // Deprecated. Use GDExtensionCallableCustomInfo2 instead.
+
+typedef struct {
+	/* Only `call_func` and `token` are strictly required, however, `object_id` should be passed if its not a static method.
+	 *
+	 * `token` should point to an address that uniquely identifies the GDExtension (for example, the
+	 * `GDExtensionClassLibraryPtr` passed to the entry symbol function.
+	 *
+	 * `hash_func`, `equal_func`, and `less_than_func` are optional. If not provided both `call_func` and
+	 * `callable_userdata` together are used as the identity of the callable for hashing and comparison purposes.
+	 *
+	 * The hash returned by `hash_func` is cached, `hash_func` will not be called more than once per callable.
+	 *
+	 * `is_valid_func` is necessary if the validity of the callable can change before destruction.
+	 *
+	 * `free_func` is necessary if `callable_userdata` needs to be cleaned up when the callable is freed.
+	 */
+	void *callable_userdata;
+	void *token;
+
+	GDObjectInstanceID object_id;
+
+	GDExtensionCallableCustomCall call_func;
+	GDExtensionCallableCustomIsValid is_valid_func;
+	GDExtensionCallableCustomFree free_func;
+
+	GDExtensionCallableCustomHash hash_func;
+	GDExtensionCallableCustomEqual equal_func;
+	GDExtensionCallableCustomLessThan less_than_func;
+
+	GDExtensionCallableCustomToString to_string_func;
+
+	GDExtensionCallableCustomGetArgumentCount get_argument_count_func;
+} GDExtensionCallableCustomInfo2;
+
 /* SCRIPT INSTANCE EXTENSION */
 
 typedef void *GDExtensionScriptInstanceDataPtr; // Pointer to custom ScriptInstance native implementation.
@@ -350,8 +517,12 @@ typedef void *GDExtensionScriptInstanceDataPtr; // Pointer to custom ScriptInsta
 typedef GDExtensionBool (*GDExtensionScriptInstanceSet)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionConstVariantPtr p_value);
 typedef GDExtensionBool (*GDExtensionScriptInstanceGet)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionVariantPtr r_ret);
 typedef const GDExtensionPropertyInfo *(*GDExtensionScriptInstanceGetPropertyList)(GDExtensionScriptInstanceDataPtr p_instance, uint32_t *r_count);
-typedef void (*GDExtensionScriptInstanceFreePropertyList)(GDExtensionScriptInstanceDataPtr p_instance, const GDExtensionPropertyInfo *p_list);
+typedef void (*GDExtensionScriptInstanceFreePropertyList)(GDExtensionScriptInstanceDataPtr p_instance, const GDExtensionPropertyInfo *p_list); // Deprecated. Use GDExtensionScriptInstanceFreePropertyList2 instead.
+typedef void (*GDExtensionScriptInstanceFreePropertyList2)(GDExtensionScriptInstanceDataPtr p_instance, const GDExtensionPropertyInfo *p_list, uint32_t p_count);
+typedef GDExtensionBool (*GDExtensionScriptInstanceGetClassCategory)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionPropertyInfo *p_class_category);
+
 typedef GDExtensionVariantType (*GDExtensionScriptInstanceGetPropertyType)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionBool *r_is_valid);
+typedef GDExtensionBool (*GDExtensionScriptInstanceValidateProperty)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionPropertyInfo *p_property);
 
 typedef GDExtensionBool (*GDExtensionScriptInstancePropertyCanRevert)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionConstStringNamePtr p_name);
 typedef GDExtensionBool (*GDExtensionScriptInstancePropertyGetRevert)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionVariantPtr r_ret);
@@ -361,12 +532,16 @@ typedef void (*GDExtensionScriptInstancePropertyStateAdd)(GDExtensionConstString
 typedef void (*GDExtensionScriptInstanceGetPropertyState)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionScriptInstancePropertyStateAdd p_add_func, void *p_userdata);
 
 typedef const GDExtensionMethodInfo *(*GDExtensionScriptInstanceGetMethodList)(GDExtensionScriptInstanceDataPtr p_instance, uint32_t *r_count);
-typedef void (*GDExtensionScriptInstanceFreeMethodList)(GDExtensionScriptInstanceDataPtr p_instance, const GDExtensionMethodInfo *p_list);
+typedef void (*GDExtensionScriptInstanceFreeMethodList)(GDExtensionScriptInstanceDataPtr p_instance, const GDExtensionMethodInfo *p_list); // Deprecated. Use GDExtensionScriptInstanceFreeMethodList2 instead.
+typedef void (*GDExtensionScriptInstanceFreeMethodList2)(GDExtensionScriptInstanceDataPtr p_instance, const GDExtensionMethodInfo *p_list, uint32_t p_count);
 
 typedef GDExtensionBool (*GDExtensionScriptInstanceHasMethod)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionConstStringNamePtr p_name);
 
+typedef GDExtensionInt (*GDExtensionScriptInstanceGetMethodArgumentCount)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionBool *r_is_valid);
+
 typedef void (*GDExtensionScriptInstanceCall)(GDExtensionScriptInstanceDataPtr p_self, GDExtensionConstStringNamePtr p_method, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_argument_count, GDExtensionVariantPtr r_return, GDExtensionCallError *r_error);
-typedef void (*GDExtensionScriptInstanceNotification)(GDExtensionScriptInstanceDataPtr p_instance, int32_t p_what);
+typedef void (*GDExtensionScriptInstanceNotification)(GDExtensionScriptInstanceDataPtr p_instance, int32_t p_what); // Deprecated. Use GDExtensionScriptInstanceNotification2 instead.
+typedef void (*GDExtensionScriptInstanceNotification2)(GDExtensionScriptInstanceDataPtr p_instance, int32_t p_what, GDExtensionBool p_reversed);
 typedef void (*GDExtensionScriptInstanceToString)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionBool *r_is_valid, GDExtensionStringPtr r_out);
 
 typedef void (*GDExtensionScriptInstanceRefCountIncremented)(GDExtensionScriptInstanceDataPtr p_instance);
@@ -420,7 +595,91 @@ typedef struct {
 
 	GDExtensionScriptInstanceFree free_func;
 
-} GDExtensionScriptInstanceInfo;
+} GDExtensionScriptInstanceInfo; // Deprecated. Use GDExtensionScriptInstanceInfo3 instead.
+
+typedef struct {
+	GDExtensionScriptInstanceSet set_func;
+	GDExtensionScriptInstanceGet get_func;
+	GDExtensionScriptInstanceGetPropertyList get_property_list_func;
+	GDExtensionScriptInstanceFreePropertyList free_property_list_func;
+	GDExtensionScriptInstanceGetClassCategory get_class_category_func; // Optional. Set to NULL for the default behavior.
+
+	GDExtensionScriptInstancePropertyCanRevert property_can_revert_func;
+	GDExtensionScriptInstancePropertyGetRevert property_get_revert_func;
+
+	GDExtensionScriptInstanceGetOwner get_owner_func;
+	GDExtensionScriptInstanceGetPropertyState get_property_state_func;
+
+	GDExtensionScriptInstanceGetMethodList get_method_list_func;
+	GDExtensionScriptInstanceFreeMethodList free_method_list_func;
+	GDExtensionScriptInstanceGetPropertyType get_property_type_func;
+	GDExtensionScriptInstanceValidateProperty validate_property_func;
+
+	GDExtensionScriptInstanceHasMethod has_method_func;
+
+	GDExtensionScriptInstanceCall call_func;
+	GDExtensionScriptInstanceNotification2 notification_func;
+
+	GDExtensionScriptInstanceToString to_string_func;
+
+	GDExtensionScriptInstanceRefCountIncremented refcount_incremented_func;
+	GDExtensionScriptInstanceRefCountDecremented refcount_decremented_func;
+
+	GDExtensionScriptInstanceGetScript get_script_func;
+
+	GDExtensionScriptInstanceIsPlaceholder is_placeholder_func;
+
+	GDExtensionScriptInstanceSet set_fallback_func;
+	GDExtensionScriptInstanceGet get_fallback_func;
+
+	GDExtensionScriptInstanceGetLanguage get_language_func;
+
+	GDExtensionScriptInstanceFree free_func;
+
+} GDExtensionScriptInstanceInfo2; // Deprecated. Use GDExtensionScriptInstanceInfo3 instead.
+
+typedef struct {
+	GDExtensionScriptInstanceSet set_func;
+	GDExtensionScriptInstanceGet get_func;
+	GDExtensionScriptInstanceGetPropertyList get_property_list_func;
+	GDExtensionScriptInstanceFreePropertyList2 free_property_list_func;
+	GDExtensionScriptInstanceGetClassCategory get_class_category_func; // Optional. Set to NULL for the default behavior.
+
+	GDExtensionScriptInstancePropertyCanRevert property_can_revert_func;
+	GDExtensionScriptInstancePropertyGetRevert property_get_revert_func;
+
+	GDExtensionScriptInstanceGetOwner get_owner_func;
+	GDExtensionScriptInstanceGetPropertyState get_property_state_func;
+
+	GDExtensionScriptInstanceGetMethodList get_method_list_func;
+	GDExtensionScriptInstanceFreeMethodList2 free_method_list_func;
+	GDExtensionScriptInstanceGetPropertyType get_property_type_func;
+	GDExtensionScriptInstanceValidateProperty validate_property_func;
+
+	GDExtensionScriptInstanceHasMethod has_method_func;
+
+	GDExtensionScriptInstanceGetMethodArgumentCount get_method_argument_count_func;
+
+	GDExtensionScriptInstanceCall call_func;
+	GDExtensionScriptInstanceNotification2 notification_func;
+
+	GDExtensionScriptInstanceToString to_string_func;
+
+	GDExtensionScriptInstanceRefCountIncremented refcount_incremented_func;
+	GDExtensionScriptInstanceRefCountDecremented refcount_decremented_func;
+
+	GDExtensionScriptInstanceGetScript get_script_func;
+
+	GDExtensionScriptInstanceIsPlaceholder is_placeholder_func;
+
+	GDExtensionScriptInstanceSet set_fallback_func;
+	GDExtensionScriptInstanceGet get_fallback_func;
+
+	GDExtensionScriptInstanceGetLanguage get_language_func;
+
+	GDExtensionScriptInstanceFree free_func;
+
+} GDExtensionScriptInstanceInfo3;
 
 /* INITIALIZATION */
 
@@ -466,7 +725,10 @@ typedef GDExtensionInterfaceFunctionPtr (*GDExtensionInterfaceGetProcAddress)(co
  *
  * For example:
  *
- *   GDExtensionInterfaceGetGodotVersion *get_godot_version = (GDExtensionInterfaceGetGodotVersion)p_get_proc_address("get_godot_version");
+ *   GDExtensionInterfaceGetGodotVersion get_godot_version = (GDExtensionInterfaceGetGodotVersion)p_get_proc_address("get_godot_version");
+ *
+ * (Note that snippet may cause "cast between incompatible function types" on some compilers, you can
+ * silence this by adding an intermediary `void*` cast.)
  *
  * You can then call it like a normal function:
  *
@@ -1313,33 +1575,64 @@ typedef void (*GDExtensionInterfaceStringNewWithWideChars)(GDExtensionUninitiali
  *
  * @param r_dest A pointer to a Variant to hold the newly created String.
  * @param p_contents A pointer to a Latin-1 encoded C string.
- * @param p_size The number of characters.
+ * @param p_size The number of characters (= number of bytes).
  */
 typedef void (*GDExtensionInterfaceStringNewWithLatin1CharsAndLen)(GDExtensionUninitializedStringPtr r_dest, const char *p_contents, GDExtensionInt p_size);
 
 /**
  * @name string_new_with_utf8_chars_and_len
  * @since 4.1
+ * @deprecated in Godot 4.3. Use `string_new_with_utf8_chars_and_len2` instead.
  *
  * Creates a String from a UTF-8 encoded C string with the given length.
  *
  * @param r_dest A pointer to a Variant to hold the newly created String.
  * @param p_contents A pointer to a UTF-8 encoded C string.
- * @param p_size The number of characters.
+ * @param p_size The number of bytes (not code units).
  */
 typedef void (*GDExtensionInterfaceStringNewWithUtf8CharsAndLen)(GDExtensionUninitializedStringPtr r_dest, const char *p_contents, GDExtensionInt p_size);
 
+/**
+ * @name string_new_with_utf8_chars_and_len2
+ * @since 4.3
+ *
+ * Creates a String from a UTF-8 encoded C string with the given length.
+ *
+ * @param r_dest A pointer to a Variant to hold the newly created String.
+ * @param p_contents A pointer to a UTF-8 encoded C string.
+ * @param p_size The number of bytes (not code units).
+ *
+ * @return Error code signifying if the operation successful.
+ */
+typedef GDExtensionInt (*GDExtensionInterfaceStringNewWithUtf8CharsAndLen2)(GDExtensionUninitializedStringPtr r_dest, const char *p_contents, GDExtensionInt p_size);
+
 /**
  * @name string_new_with_utf16_chars_and_len
  * @since 4.1
+ * @deprecated in Godot 4.3. Use `string_new_with_utf16_chars_and_len2` instead.
  *
  * Creates a String from a UTF-16 encoded C string with the given length.
  *
  * @param r_dest A pointer to a Variant to hold the newly created String.
  * @param p_contents A pointer to a UTF-16 encoded C string.
- * @param p_size The number of characters.
+ * @param p_size The number of characters (not bytes).
  */
-typedef void (*GDExtensionInterfaceStringNewWithUtf16CharsAndLen)(GDExtensionUninitializedStringPtr r_dest, const char16_t *p_contents, GDExtensionInt p_size);
+typedef void (*GDExtensionInterfaceStringNewWithUtf16CharsAndLen)(GDExtensionUninitializedStringPtr r_dest, const char16_t *p_contents, GDExtensionInt p_char_count);
+
+/**
+ * @name string_new_with_utf16_chars_and_len2
+ * @since 4.3
+ *
+ * Creates a String from a UTF-16 encoded C string with the given length.
+ *
+ * @param r_dest A pointer to a Variant to hold the newly created String.
+ * @param p_contents A pointer to a UTF-16 encoded C string.
+ * @param p_size The number of characters (not bytes).
+ * @param p_default_little_endian If true, UTF-16 use little endian.
+ *
+ * @return Error code signifying if the operation successful.
+ */
+typedef GDExtensionInt (*GDExtensionInterfaceStringNewWithUtf16CharsAndLen2)(GDExtensionUninitializedStringPtr r_dest, const char16_t *p_contents, GDExtensionInt p_char_count, GDExtensionBool p_default_little_endian);
 
 /**
  * @name string_new_with_utf32_chars_and_len
@@ -1349,9 +1642,9 @@ typedef void (*GDExtensionInterfaceStringNewWithUtf16CharsAndLen)(GDExtensionUni
  *
  * @param r_dest A pointer to a Variant to hold the newly created String.
  * @param p_contents A pointer to a UTF-32 encoded C string.
- * @param p_size The number of characters.
+ * @param p_size The number of characters (not bytes).
  */
-typedef void (*GDExtensionInterfaceStringNewWithUtf32CharsAndLen)(GDExtensionUninitializedStringPtr r_dest, const char32_t *p_contents, GDExtensionInt p_size);
+typedef void (*GDExtensionInterfaceStringNewWithUtf32CharsAndLen)(GDExtensionUninitializedStringPtr r_dest, const char32_t *p_contents, GDExtensionInt p_char_count);
 
 /**
  * @name string_new_with_wide_chars_and_len
@@ -1361,9 +1654,9 @@ typedef void (*GDExtensionInterfaceStringNewWithUtf32CharsAndLen)(GDExtensionUni
  *
  * @param r_dest A pointer to a Variant to hold the newly created String.
  * @param p_contents A pointer to a wide C string.
- * @param p_size The number of characters.
+ * @param p_size The number of characters (not bytes).
  */
-typedef void (*GDExtensionInterfaceStringNewWithWideCharsAndLen)(GDExtensionUninitializedStringPtr r_dest, const wchar_t *p_contents, GDExtensionInt p_size);
+typedef void (*GDExtensionInterfaceStringNewWithWideCharsAndLen)(GDExtensionUninitializedStringPtr r_dest, const wchar_t *p_contents, GDExtensionInt p_char_count);
 
 /**
  * @name string_to_latin1_chars
@@ -1526,6 +1819,69 @@ typedef void (*GDExtensionInterfaceStringOperatorPlusEqWcstr)(GDExtensionStringP
  */
 typedef void (*GDExtensionInterfaceStringOperatorPlusEqC32str)(GDExtensionStringPtr p_self, const char32_t *p_b);
 
+/**
+ * @name string_resize
+ * @since 4.2
+ *
+ * Resizes the underlying string data to the given number of characters.
+ *
+ * Space needs to be allocated for the null terminating character ('\0') which
+ * also must be added manually, in order for all string functions to work correctly.
+ *
+ * Warning: This is an error-prone operation - only use it if there's no other
+ * efficient way to accomplish your goal.
+ *
+ * @param p_self A pointer to the String.
+ * @param p_resize The new length for the String.
+ *
+ * @return Error code signifying if the operation successful.
+ */
+typedef GDExtensionInt (*GDExtensionInterfaceStringResize)(GDExtensionStringPtr p_self, GDExtensionInt p_resize);
+
+/* INTERFACE: StringName Utilities */
+
+/**
+ * @name string_name_new_with_latin1_chars
+ * @since 4.2
+ *
+ * Creates a StringName from a Latin-1 encoded C string.
+ *
+ * If `p_is_static` is true, then:
+ * - The StringName will reuse the `p_contents` buffer instead of copying it.
+ *   You must guarantee that the buffer remains valid for the duration of the application (e.g. string literal).
+ * - You must not call a destructor for this StringName. Incrementing the initial reference once should achieve this.
+ *
+ * `p_is_static` is purely an optimization and can easily introduce undefined behavior if used wrong. In case of doubt, set it to false.
+ *
+ * @param r_dest A pointer to uninitialized storage, into which the newly created StringName is constructed.
+ * @param p_contents A pointer to a C string (null terminated and Latin-1 or ASCII encoded).
+ * @param p_is_static Whether the StringName reuses the buffer directly (see above).
+ */
+typedef void (*GDExtensionInterfaceStringNameNewWithLatin1Chars)(GDExtensionUninitializedStringNamePtr r_dest, const char *p_contents, GDExtensionBool p_is_static);
+
+/**
+ * @name string_name_new_with_utf8_chars
+ * @since 4.2
+ *
+ * Creates a StringName from a UTF-8 encoded C string.
+ *
+ * @param r_dest A pointer to uninitialized storage, into which the newly created StringName is constructed.
+ * @param p_contents A pointer to a C string (null terminated and UTF-8 encoded).
+ */
+typedef void (*GDExtensionInterfaceStringNameNewWithUtf8Chars)(GDExtensionUninitializedStringNamePtr r_dest, const char *p_contents);
+
+/**
+ * @name string_name_new_with_utf8_chars_and_len
+ * @since 4.2
+ *
+ * Creates a StringName from a UTF-8 encoded string with a given number of characters.
+ *
+ * @param r_dest A pointer to uninitialized storage, into which the newly created StringName is constructed.
+ * @param p_contents A pointer to a C string (null terminated and UTF-8 encoded).
+ * @param p_size The number of bytes (not UTF-8 code points).
+ */
+typedef void (*GDExtensionInterfaceStringNameNewWithUtf8CharsAndLen)(GDExtensionUninitializedStringNamePtr r_dest, const char *p_contents, GDExtensionInt p_size);
+
 /* INTERFACE: XMLParser Utilities */
 
 /**
@@ -1574,6 +1930,36 @@ typedef void (*GDExtensionInterfaceFileAccessStoreBuffer)(GDExtensionObjectPtr p
  */
 typedef uint64_t (*GDExtensionInterfaceFileAccessGetBuffer)(GDExtensionConstObjectPtr p_instance, uint8_t *p_dst, uint64_t p_length);
 
+/* INTERFACE: Image Utilities */
+
+/**
+ * @name image_ptrw
+ * @since 4.3
+ *
+ * Returns writable pointer to internal Image buffer.
+ *
+ * @param p_instance A pointer to a Image object.
+ *
+ * @return Pointer to internal Image buffer.
+ *
+ * @see Image::ptrw()
+ */
+typedef uint8_t *(*GDExtensionInterfaceImagePtrw)(GDExtensionObjectPtr p_instance);
+
+/**
+ * @name image_ptr
+ * @since 4.3
+ *
+ * Returns read only pointer to internal Image buffer.
+ *
+ * @param p_instance A pointer to a Image object.
+ *
+ * @return Pointer to internal Image buffer.
+ *
+ * @see Image::ptr()
+ */
+typedef const uint8_t *(*GDExtensionInterfaceImagePtr)(GDExtensionObjectPtr p_instance);
+
 /* INTERFACE: WorkerThreadPool Utilities */
 
 /**
@@ -1639,32 +2025,6 @@ typedef uint8_t *(*GDExtensionInterfacePackedByteArrayOperatorIndex)(GDExtension
  */
 typedef const uint8_t *(*GDExtensionInterfacePackedByteArrayOperatorIndexConst)(GDExtensionConstTypePtr p_self, GDExtensionInt p_index);
 
-/**
- * @name packed_color_array_operator_index
- * @since 4.1
- *
- * Gets a pointer to a color in a PackedColorArray.
- *
- * @param p_self A pointer to a PackedColorArray object.
- * @param p_index The index of the Color to get.
- *
- * @return A pointer to the requested Color.
- */
-typedef GDExtensionTypePtr (*GDExtensionInterfacePackedColorArrayOperatorIndex)(GDExtensionTypePtr p_self, GDExtensionInt p_index);
-
-/**
- * @name packed_color_array_operator_index_const
- * @since 4.1
- *
- * Gets a const pointer to a color in a PackedColorArray.
- *
- * @param p_self A const pointer to a const PackedColorArray object.
- * @param p_index The index of the Color to get.
- *
- * @return A const pointer to the requested Color.
- */
-typedef GDExtensionTypePtr (*GDExtensionInterfacePackedColorArrayOperatorIndexConst)(GDExtensionConstTypePtr p_self, GDExtensionInt p_index);
-
 /**
  * @name packed_float32_array_operator_index
  * @since 4.1
@@ -1847,6 +2207,58 @@ typedef GDExtensionTypePtr (*GDExtensionInterfacePackedVector3ArrayOperatorIndex
  */
 typedef GDExtensionTypePtr (*GDExtensionInterfacePackedVector3ArrayOperatorIndexConst)(GDExtensionConstTypePtr p_self, GDExtensionInt p_index);
 
+/**
+ * @name packed_vector4_array_operator_index
+ * @since 4.3
+ *
+ * Gets a pointer to a Vector4 in a PackedVector4Array.
+ *
+ * @param p_self A pointer to a PackedVector4Array object.
+ * @param p_index The index of the Vector4 to get.
+ *
+ * @return A pointer to the requested Vector4.
+ */
+typedef GDExtensionTypePtr (*GDExtensionInterfacePackedVector4ArrayOperatorIndex)(GDExtensionTypePtr p_self, GDExtensionInt p_index);
+
+/**
+ * @name packed_vector4_array_operator_index_const
+ * @since 4.3
+ *
+ * Gets a const pointer to a Vector4 in a PackedVector4Array.
+ *
+ * @param p_self A const pointer to a PackedVector4Array object.
+ * @param p_index The index of the Vector4 to get.
+ *
+ * @return A const pointer to the requested Vector4.
+ */
+typedef GDExtensionTypePtr (*GDExtensionInterfacePackedVector4ArrayOperatorIndexConst)(GDExtensionConstTypePtr p_self, GDExtensionInt p_index);
+
+/**
+ * @name packed_color_array_operator_index
+ * @since 4.1
+ *
+ * Gets a pointer to a color in a PackedColorArray.
+ *
+ * @param p_self A pointer to a PackedColorArray object.
+ * @param p_index The index of the Color to get.
+ *
+ * @return A pointer to the requested Color.
+ */
+typedef GDExtensionTypePtr (*GDExtensionInterfacePackedColorArrayOperatorIndex)(GDExtensionTypePtr p_self, GDExtensionInt p_index);
+
+/**
+ * @name packed_color_array_operator_index_const
+ * @since 4.1
+ *
+ * Gets a const pointer to a color in a PackedColorArray.
+ *
+ * @param p_self A const pointer to a PackedColorArray object.
+ * @param p_index The index of the Color to get.
+ *
+ * @return A const pointer to the requested Color.
+ */
+typedef GDExtensionTypePtr (*GDExtensionInterfacePackedColorArrayOperatorIndexConst)(GDExtensionConstTypePtr p_self, GDExtensionInt p_index);
+
 /**
  * @name array_operator_index
  * @since 4.1
@@ -2004,6 +2416,17 @@ typedef void *(*GDExtensionInterfaceObjectGetInstanceBinding)(GDExtensionObjectP
  */
 typedef void (*GDExtensionInterfaceObjectSetInstanceBinding)(GDExtensionObjectPtr p_o, void *p_token, void *p_binding, const GDExtensionInstanceBindingCallbacks *p_callbacks);
 
+/**
+ * @name object_free_instance_binding
+ * @since 4.2
+ *
+ * Free an Object's instance binding.
+ *
+ * @param p_o A pointer to the Object.
+ * @param p_library A token the library received by the GDExtension's entry point function.
+ */
+typedef void (*GDExtensionInterfaceObjectFreeInstanceBinding)(GDExtensionObjectPtr p_o, void *p_token);
+
 /**
  * @name object_set_instance
  * @since 4.1
@@ -2022,6 +2445,9 @@ typedef void (*GDExtensionInterfaceObjectSetInstance)(GDExtensionObjectPtr p_o,
  *
  * Gets the class name of an Object.
  *
+ * If the GDExtension wraps the Godot object in an abstraction specific to its class, this is the
+ * function that should be used to determine which wrapper to use.
+ *
  * @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.
@@ -2067,6 +2493,34 @@ typedef GDExtensionObjectPtr (*GDExtensionInterfaceObjectGetInstanceFromId)(GDOb
  */
 typedef GDObjectInstanceID (*GDExtensionInterfaceObjectGetInstanceId)(GDExtensionConstObjectPtr p_object);
 
+/**
+ * @name object_has_script_method
+ * @since 4.3
+ *
+ * Checks if this object has a script with the given method.
+ *
+ * @param p_object A pointer to the Object.
+ * @param p_method A pointer to a StringName identifying the method.
+ *
+ * @returns true if the object has a script and that script has a method with the given name. Returns false if the object has no script.
+ */
+typedef GDExtensionBool (*GDExtensionInterfaceObjectHasScriptMethod)(GDExtensionConstObjectPtr p_object, GDExtensionConstStringNamePtr p_method);
+
+/**
+ * @name object_call_script_method
+ * @since 4.3
+ *
+ * Call the given script method on this object.
+ *
+ * @param p_object A pointer to the Object.
+ * @param p_method A pointer to a StringName identifying the method.
+ * @param p_args A pointer to a C array of Variant.
+ * @param p_argument_count The number of arguments.
+ * @param r_return A pointer a Variant which will be assigned the return value.
+ * @param r_error A pointer the structure which will hold error information.
+ */
+typedef void (*GDExtensionInterfaceObjectCallScriptMethod)(GDExtensionObjectPtr p_object, GDExtensionConstStringNamePtr p_method, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_argument_count, GDExtensionUninitializedVariantPtr r_return, GDExtensionCallError *r_error);
+
 /* INTERFACE: Reference */
 
 /**
@@ -2097,6 +2551,7 @@ typedef void (*GDExtensionInterfaceRefSetObject)(GDExtensionRefPtr p_ref, GDExte
 /**
  * @name script_instance_create
  * @since 4.1
+ * @deprecated in Godot 4.2. Use `script_instance_create3` instead.
  *
  * Creates a script instance that contains the given info and instance data.
  *
@@ -2107,6 +2562,119 @@ typedef void (*GDExtensionInterfaceRefSetObject)(GDExtensionRefPtr p_ref, GDExte
  */
 typedef GDExtensionScriptInstancePtr (*GDExtensionInterfaceScriptInstanceCreate)(const GDExtensionScriptInstanceInfo *p_info, GDExtensionScriptInstanceDataPtr p_instance_data);
 
+/**
+ * @name script_instance_create2
+ * @since 4.2
+ * @deprecated in Godot 4.3. Use `script_instance_create3` instead.
+ *
+ * Creates a script instance that contains the given info and instance data.
+ *
+ * @param p_info A pointer to a GDExtensionScriptInstanceInfo2 struct.
+ * @param p_instance_data A pointer to a data representing the script instance in the GDExtension. This will be passed to all the function pointers on p_info.
+ *
+ * @return A pointer to a ScriptInstanceExtension object.
+ */
+typedef GDExtensionScriptInstancePtr (*GDExtensionInterfaceScriptInstanceCreate2)(const GDExtensionScriptInstanceInfo2 *p_info, GDExtensionScriptInstanceDataPtr p_instance_data);
+
+/**
+ * @name script_instance_create3
+ * @since 4.3
+ *
+ * Creates a script instance that contains the given info and instance data.
+ *
+ * @param p_info A pointer to a GDExtensionScriptInstanceInfo3 struct.
+ * @param p_instance_data A pointer to a data representing the script instance in the GDExtension. This will be passed to all the function pointers on p_info.
+ *
+ * @return A pointer to a ScriptInstanceExtension object.
+ */
+typedef GDExtensionScriptInstancePtr (*GDExtensionInterfaceScriptInstanceCreate3)(const GDExtensionScriptInstanceInfo3 *p_info, GDExtensionScriptInstanceDataPtr p_instance_data);
+
+/**
+ * @name placeholder_script_instance_create
+ * @since 4.2
+ *
+ * Creates a placeholder script instance for a given script and instance.
+ *
+ * This interface is optional as a custom placeholder could also be created with script_instance_create().
+ *
+ * @param p_language A pointer to a ScriptLanguage.
+ * @param p_script A pointer to a Script.
+ * @param p_owner A pointer to an Object.
+ *
+ * @return A pointer to a PlaceHolderScriptInstance object.
+ */
+typedef GDExtensionScriptInstancePtr (*GDExtensionInterfacePlaceHolderScriptInstanceCreate)(GDExtensionObjectPtr p_language, GDExtensionObjectPtr p_script, GDExtensionObjectPtr p_owner);
+
+/**
+ * @name placeholder_script_instance_update
+ * @since 4.2
+ *
+ * Updates a placeholder script instance with the given properties and values.
+ *
+ * The passed in placeholder must be an instance of PlaceHolderScriptInstance
+ * such as the one returned by placeholder_script_instance_create().
+ *
+ * @param p_placeholder A pointer to a PlaceHolderScriptInstance.
+ * @param p_properties A pointer to an Array of Dictionary representing PropertyInfo.
+ * @param p_values A pointer to a Dictionary mapping StringName to Variant values.
+ */
+typedef void (*GDExtensionInterfacePlaceHolderScriptInstanceUpdate)(GDExtensionScriptInstancePtr p_placeholder, GDExtensionConstTypePtr p_properties, GDExtensionConstTypePtr p_values);
+
+/**
+ * @name object_get_script_instance
+ * @since 4.2
+ *
+ * Get the script instance data attached to this object.
+ *
+ * @param p_object A pointer to the Object.
+ * @param p_language A pointer to the language expected for this script instance.
+ *
+ * @return A GDExtensionScriptInstanceDataPtr that was attached to this object as part of script_instance_create.
+ */
+typedef GDExtensionScriptInstanceDataPtr (*GDExtensionInterfaceObjectGetScriptInstance)(GDExtensionConstObjectPtr p_object, GDExtensionObjectPtr p_language);
+
+/* INTERFACE: Callable */
+
+/**
+ * @name callable_custom_create
+ * @since 4.2
+ * @deprecated in Godot 4.3. Use `callable_custom_create2` instead.
+ *
+ * Creates a custom Callable object from a function pointer.
+ *
+ * Provided struct can be safely freed once the function returns.
+ *
+ * @param r_callable A pointer that will receive the new Callable.
+ * @param p_callable_custom_info The info required to construct a Callable.
+ */
+typedef void (*GDExtensionInterfaceCallableCustomCreate)(GDExtensionUninitializedTypePtr r_callable, GDExtensionCallableCustomInfo *p_callable_custom_info);
+
+/**
+ * @name callable_custom_create2
+ * @since 4.3
+ *
+ * Creates a custom Callable object from a function pointer.
+ *
+ * Provided struct can be safely freed once the function returns.
+ *
+ * @param r_callable A pointer that will receive the new Callable.
+ * @param p_callable_custom_info The info required to construct a Callable.
+ */
+typedef void (*GDExtensionInterfaceCallableCustomCreate2)(GDExtensionUninitializedTypePtr r_callable, GDExtensionCallableCustomInfo2 *p_callable_custom_info);
+
+/**
+ * @name callable_custom_get_userdata
+ * @since 4.2
+ *
+ * Retrieves the userdata pointer from a custom Callable.
+ *
+ * If the Callable is not a custom Callable or the token does not match the one provided to callable_custom_create() via GDExtensionCallableCustomInfo then NULL will be returned.
+ *
+ * @param p_callable A pointer to a Callable.
+ * @param p_token A pointer to an address that uniquely identifies the GDExtension.
+ */
+typedef void *(*GDExtensionInterfaceCallableCustomGetUserData)(GDExtensionConstTypePtr p_callable, void *p_token);
+
 /* INTERFACE: ClassDB */
 
 /**
@@ -2154,6 +2722,7 @@ typedef void *(*GDExtensionInterfaceClassdbGetClassTag)(GDExtensionConstStringNa
 /**
  * @name classdb_register_extension_class
  * @since 4.1
+ * @deprecated in Godot 4.2. Use `classdb_register_extension_class3` instead.
  *
  * Registers an extension class in the ClassDB.
  *
@@ -2166,6 +2735,37 @@ typedef void *(*GDExtensionInterfaceClassdbGetClassTag)(GDExtensionConstStringNa
  */
 typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo *p_extension_funcs);
 
+/**
+ * @name classdb_register_extension_class2
+ * @since 4.2
+ * @deprecated in Godot 4.3. Use `classdb_register_extension_class3` instead.
+ *
+ * Registers an extension class in the ClassDB.
+ *
+ * Provided struct can be safely freed once the function returns.
+ *
+ * @param p_library A pointer the library received by the GDExtension's entry point function.
+ * @param p_class_name A pointer to a StringName with the class name.
+ * @param p_parent_class_name A pointer to a StringName with the parent class name.
+ * @param p_extension_funcs A pointer to a GDExtensionClassCreationInfo2 struct.
+ */
+typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass2)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo2 *p_extension_funcs);
+
+/**
+ * @name classdb_register_extension_class3
+ * @since 4.3
+ *
+ * Registers an extension class in the ClassDB.
+ *
+ * Provided struct can be safely freed once the function returns.
+ *
+ * @param p_library A pointer the library received by the GDExtension's entry point function.
+ * @param p_class_name A pointer to a StringName with the class name.
+ * @param p_parent_class_name A pointer to a StringName with the parent class name.
+ * @param p_extension_funcs A pointer to a GDExtensionClassCreationInfo2 struct.
+ */
+typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass3)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo3 *p_extension_funcs);
+
 /**
  * @name classdb_register_extension_class_method
  * @since 4.1
@@ -2180,18 +2780,36 @@ typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass)(GDExtensionCla
  */
 typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClassMethod)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, const GDExtensionClassMethodInfo *p_method_info);
 
+/**
+ * @name classdb_register_extension_class_virtual_method
+ * @since 4.3
+ *
+ * Registers a virtual method on an extension class in ClassDB, that can be implemented by scripts or other extensions.
+ *
+ * Provided struct can be safely freed once the function returns.
+ *
+ * @param p_library A pointer the library received by the GDExtension's entry point function.
+ * @param p_class_name A pointer to a StringName with the class name.
+ * @param p_method_info A pointer to a GDExtensionClassMethodInfo struct.
+ */
+typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClassVirtualMethod)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, const GDExtensionClassVirtualMethodInfo *p_method_info);
+
 /**
  * @name classdb_register_extension_class_integer_constant
  * @since 4.1
  *
  * Registers an integer constant on an extension class in the ClassDB.
  *
+ * Note about registering bitfield values (if p_is_bitfield is true): even though p_constant_value is signed, language bindings are
+ * advised to treat bitfields as uint64_t, since this is generally clearer and can prevent mistakes like using -1 for setting all bits.
+ * Language APIs should thus provide an abstraction that registers bitfields (uint64_t) separately from regular constants (int64_t).
+ *
  * @param p_library A pointer the library received by the GDExtension's entry point function.
  * @param p_class_name A pointer to a StringName with the class name.
  * @param p_enum_name A pointer to a StringName with the enum name.
  * @param p_constant_name A pointer to a StringName with the constant name.
  * @param p_constant_value The constant value.
- * @param p_is_bitfield Whether or not this is a bit field.
+ * @param p_is_bitfield Whether or not this constant is part of a bitfield.
  */
 typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClassIntegerConstant)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_enum_name, GDExtensionConstStringNamePtr p_constant_name, GDExtensionInt p_constant_value, GDExtensionBool p_is_bitfield);
 
@@ -2211,6 +2829,23 @@ typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClassIntegerConstant)
  */
 typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClassProperty)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, const GDExtensionPropertyInfo *p_info, GDExtensionConstStringNamePtr p_setter, GDExtensionConstStringNamePtr p_getter);
 
+/**
+ * @name classdb_register_extension_class_property_indexed
+ * @since 4.2
+ *
+ * Registers an indexed property on an extension class in the ClassDB.
+ *
+ * Provided struct can be safely freed once the function returns.
+ *
+ * @param p_library A pointer the library received by the GDExtension's entry point function.
+ * @param p_class_name A pointer to a StringName with the class name.
+ * @param p_info A pointer to a GDExtensionPropertyInfo struct.
+ * @param p_setter A pointer to a StringName with the name of the setter method.
+ * @param p_getter A pointer to a StringName with the name of the getter method.
+ * @param p_index The index to pass as the first argument to the getter and setter methods.
+ */
+typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClassPropertyIndexed)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, const GDExtensionPropertyInfo *p_info, GDExtensionConstStringNamePtr p_setter, GDExtensionConstStringNamePtr p_getter, GDExtensionInt p_index);
+
 /**
  * @name classdb_register_extension_class_property_group
  * @since 4.1
@@ -2297,6 +2932,31 @@ typedef void (*GDExtensionInterfaceEditorAddPlugin)(GDExtensionConstStringNamePt
  */
 typedef void (*GDExtensionInterfaceEditorRemovePlugin)(GDExtensionConstStringNamePtr p_class_name);
 
+/**
+ * @name editor_help_load_xml_from_utf8_chars
+ * @since 4.3
+ *
+ * Loads new XML-formatted documentation data in the editor.
+ *
+ * The provided pointer can be immediately freed once the function returns.
+ *
+ * @param p_data A pointer to a UTF-8 encoded C string (null terminated).
+ */
+typedef void (*GDExtensionsInterfaceEditorHelpLoadXmlFromUtf8Chars)(const char *p_data);
+
+/**
+ * @name editor_help_load_xml_from_utf8_chars_and_len
+ * @since 4.3
+ *
+ * Loads new XML-formatted documentation data in the editor.
+ *
+ * The provided pointer can be immediately freed once the function returns.
+ *
+ * @param p_data A pointer to a UTF-8 encoded C string.
+ * @param p_size The number of bytes (not code units).
+ */
+typedef void (*GDExtensionsInterfaceEditorHelpLoadXmlFromUtf8CharsAndLen)(const char *p_data, GDExtensionInt p_size);
+
 #ifdef __cplusplus
 }
 #endif