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_objfinalizer.cpython-39.pyc
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a j��Y� � @ s^ d dl Z dgZG dd� de�Ze jdkrJd dlZdd� ZG dd� de�ZnG d d� de�ZdS ) � N�AutoFinalizedObjectc s@ e Zd ZdZdd� Z� fdd�Zdd� Zdd � Zd d � Z� Z S ) �_AutoFinalizedObjectBasez[ Base class for objects that get automatically finalized on delete or at exit. c C s dS )z�Actually finalizes the object (frees allocated resources etc.). Returns: None Derived classes should implement this. N� ��selfr r �5/usr/lib/python3.9/site-packages/usb/_objfinalizer.py�_finalize_object* s z)_AutoFinalizedObjectBase._finalize_objectc s t t| ��| �}d|_|S )z�Creates a new object instance and adds the private finalizer attributes to it. Returns: new object instance Arguments: * *args, **kwargs -- ignored F)�superr �__new__�_finalize_called��cls�args�kwargs�instance�� __class__r r r 3 s z _AutoFinalizedObjectBase.__new__c C s | j sd| _ | �� dS )z\Helper method that finalizes the object if not already done. Returns: None TN)r r r r r r �_do_finalize_object@ s z,_AutoFinalizedObjectBase._do_finalize_objectc C s t d��dS )zIFinalizes the object if not already done. Returns: None z6finalize() must be implemented by AutoFinalizedObject.N)�NotImplementedErrorr r r r �finalizeI s �z!_AutoFinalizedObjectBase.finalizec C s | � � d S )N)r r r r r �__del__S s z _AutoFinalizedObjectBase.__del__) �__name__� __module__� __qualname__�__doc__r r r r r � __classcell__r r r r r $ s r i c C s | � }|dur|� � dS )a) Helper function for weakref.finalize() that dereferences a weakref to an object and calls its _do_finalize_object() method if the object is still alive. Does nothing otherwise. Returns: None (implicit) Arguments: * obj_ref -- weakref to an object N�r )Zobj_ref�objr r r �_do_finalize_object_ref[ s r c s$ e Zd Z� fdd�Zdd� Z� ZS )r c s8 t t| �j| g|�R i |��}t�|tt�|��|_|S )a& Creates a new object instance and adds the private finalizer attributes to it. Returns: new object instance Arguments: * *args, **kwargs -- passed to the parent instance creator (which ignores them) )r r r �weakrefr r �ref� _finalizerr r r r r m s ��� �zAutoFinalizedObject.__new__c C s | � � dS �z)Finalizes the object if not already done.N)r! r r r r r � s � AutoFinalizedObject.finalize)r r r r r r r r r r r k s !c @ s e Zd Zdd� ZdS )r c C s | � � dS r" r r r r r r � s r# N)r r r r r r r r r � s )�sys�__all__�objectr � hexversionr r r r r r r �<module> s 3 ,