Edit File: abc.cpython-37.pyc
B � f� � @ s� d Z dd� ZG dd� de�ZG dd� de�ZG dd� de�Zy,d d lm Z m Z m Z m Z m Z mZmZmZ W n* ek r� d d lmZm Z d e_Y nX G d d� de�ZG dd� ded�ZdS )z3Abstract Base Classes (ABCs) according to PEP 3119.c C s d| _ | S )a� A decorator indicating abstract methods. Requires that the metaclass is ABCMeta or derived from it. A class that has a metaclass derived from ABCMeta cannot be instantiated unless all of its abstract methods are overridden. The abstract methods can be called using any of the normal 'super' call mechanisms. Usage: class C(metaclass=ABCMeta): @abstractmethod def my_abstract_method(self, ...): ... T)�__isabstractmethod__)�funcobj� r �(/opt/alt/python37/lib64/python3.7/abc.py�abstractmethod s r c s$ e Zd ZdZdZ� fdd�Z� ZS )�abstractclassmethodaJ A decorator indicating abstract classmethods. Similar to abstractmethod. Usage: class C(metaclass=ABCMeta): @abstractclassmethod def my_abstract_classmethod(cls, ...): ... 'abstractclassmethod' is deprecated. Use 'classmethod' with 'abstractmethod' instead. Tc s d|_ t� �|� d S )NT)r �super�__init__)�self�callable)� __class__r r r - s z abstractclassmethod.__init__)�__name__� __module__� __qualname__�__doc__r r � __classcell__r r )r r r s r c s$ e Zd ZdZdZ� fdd�Z� ZS )�abstractstaticmethodaJ A decorator indicating abstract staticmethods. Similar to abstractmethod. Usage: class C(metaclass=ABCMeta): @abstractstaticmethod def my_abstract_staticmethod(...): ... 'abstractstaticmethod' is deprecated. Use 'staticmethod' with 'abstractmethod' instead. Tc s d|_ t� �|� d S )NT)r r r )r r )r r r r D s z abstractstaticmethod.__init__)r r r r r r r r r )r r r 2 s r c @ s e Zd ZdZdZdS )�abstractpropertyaf A decorator indicating abstract properties. Requires that the metaclass is ABCMeta or derived from it. A class that has a metaclass derived from ABCMeta cannot be instantiated unless all of its abstract properties are overridden. The abstract properties can be called using any of the normal 'super' call mechanisms. Usage: class C(metaclass=ABCMeta): @abstractproperty def my_abstract_property(self): ... This defines a read-only property; you can also define a read-write abstract property using the 'long' form of property declaration: class C(metaclass=ABCMeta): def getx(self): ... def setx(self, value): ... x = abstractproperty(getx, setx) 'abstractproperty' is deprecated. Use 'property' with 'abstractmethod' instead. TN)r r r r r r r r r r I s r � )�get_cache_token� _abc_init� _abc_register�_abc_instancecheck�_abc_subclasscheck� _get_dump�_reset_registry� _reset_caches)�ABCMetar �abcc sR e Zd ZdZ� fdd�Zdd� Zdd� Zdd � Zdd d �Zd d� Z dd� Z � Z S )r a� Metaclass for defining Abstract Base Classes (ABCs). Use this metaclass to create an ABC. An ABC can be subclassed directly, and then acts as a mix-in class. You can also register unrelated concrete classes (even built-in classes) and unrelated ABCs as 'virtual subclasses' -- these and their descendants will be considered subclasses of the registering ABC by the built-in issubclass() function, but the registering ABC won't show up in their MRO (Method Resolution Order) nor will method implementations defined by the registering ABC be callable (not even via super()). c s" t � j| |||f|�}t|� |S )N)r �__new__r )�mcls�name�bases� namespace�kwargs�cls)r r r r } s zABCMeta.__new__c C s t | |�S )z{Register a virtual subclass of an ABC. Returns the subclass, to allow usage as a class decorator. )r )r$ �subclassr r r �register� s zABCMeta.registerc C s t | |�S )z'Override for isinstance(instance, cls).)r )r$ �instancer r r �__instancecheck__� s zABCMeta.__instancecheck__c C s t | |�S )z'Override for issubclass(subclass, cls).)r )r$ r% r r r �__subclasscheck__� s zABCMeta.__subclasscheck__Nc C s� t d| j� d| j� �|d� t dt� � �|d� t| �\}}}}t d|��|d� t d|��|d� t d|��|d� t d|��|d� d S ) z'Debug helper to print the ABC registry.zClass: �.)�filezInv. counter: z_abc_registry: z _abc_cache: z_abc_negative_cache: z _abc_negative_cache_version: N)�printr r r r )r$ r+ � _abc_registry� _abc_cache�_abc_negative_cache�_abc_negative_cache_versionr r r �_dump_registry� s zABCMeta._dump_registryc C s t | � dS )z.Clear the registry (for debugging or testing).N)r )r$ r r r �_abc_registry_clear� s zABCMeta._abc_registry_clearc C s t | � dS )z,Clear the caches (for debugging or testing).N)r )r$ r r r �_abc_caches_clear� s zABCMeta._abc_caches_clear)N) r r r r r r& r( r) r1 r2 r3 r r r )r r r p s r c @ s e Zd ZdZdZdS )�ABCzVHelper class that provides a standard way to create an ABC using inheritance. r N)r r r r � __slots__r r r r r4 � s r4 )� metaclassN)r r � classmethodr � staticmethodr �propertyr �_abcr r r r r r r r � ImportErrorZ_py_abcr r �typer4 r r r r �<module> s , 6
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