Merge pull request #1264 from dsnopek/misc-gdextension-interface-changes

Miscellaneous updates to gdextension_interface.h

Author: akien-mga

gdextension/gdextension_interface.h

@@ -510,7 +510,7 @@ typedef struct {
 GDExtensionScriptInstanceGet get_func;
 GDExtensionScriptInstanceGetPropertyList get_property_list_func;
 GDExtensionScriptInstanceFreePropertyList free_property_list_func;
-GDExtensionScriptInstanceGetClassCategory get_class_category_func;
+GDExtensionScriptInstanceGetClassCategory get_class_category_func; // Optional. Set to NULL for the default behavior.
 
 GDExtensionScriptInstancePropertyCanRevert property_can_revert_func;
 GDExtensionScriptInstancePropertyGetRevert property_get_revert_func;
@@ -2147,6 +2147,17 @@ 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