File: //usr/lib/python3.6/site-packages/contextvars/__pycache__/__init__.cpython-36.pyc
3
U��Z� � @ s� d dl Zd dlZd dlZdZe� ZG dd� deejj ��Z
G dd� dejj e
d �Z G d
d � d e�Z G d d� de d �Z
G d
d� de�ZG dd� ded �Zdd� Zdd� Zdd� Zej� ZdS )� N�
ContextVar�Context�Token� copy_contextc s e Zd Z� fdd�Z� ZS )� ContextMetac s2 t � j| |||�}|jdks&|jdkr.td��|S )N� contextvarsr z-type 'Context' is not an acceptable base type)�super�__new__�
__module__�__name__� TypeError)�mcls�names�bases�dct�cls)� __class__� � /usr/lib/python3.6/__init__.pyr s zContextMeta.__new__)r r
� __qualname__r �
__classcell__r r )r r r
s r c @ sD e Zd Zdd� Zdd� Zdd� Zdd� Zd d
� Zd d � Zd
d� Z dS )r c C s t j� | _d | _d S )N)�
immutablesZMap�_data�
_prev_context)�selfr r r �__init__ s
zContext.__init__c O sJ | j d k rtdj| ���t� | _ zt| � |||�S t| j � d | _ X d S )Nz+cannot enter context: {} is already entered)r � RuntimeError�format� _get_context� _set_context)r �callable�args�kwargsr r r �run s
z Context.runc C s t � }| j|_|S )N)r r )r �newr r r �copy+ s z Context.copyc C s" t |t�stdj|���| j| S )Nz'a ContextVar key was expected, got {!r})�
isinstancer r r r )r �varr r r � __getitem__0 s
zContext.__getitem__c C s" t |t�stdj|���|| jkS )Nz'a ContextVar key was expected, got {!r})r& r r r r )r r' r r r � __contains__6 s
zContext.__contains__c C s
t | j�S )N)�lenr )r r r r �__len__< s zContext.__len__c C s
t | j�S )N)�iterr )r r r r �__iter__? s zContext.__iter__N)
r r
r r r# r% r( r) r+ r- r r r r r s
)� metaclassc s$ e Zd Z� fdd�Zdd� Z� ZS )�ContextVarMetac s2 t � j| |||�}|jdks&|jdkr.td��|S )Nr r z0type 'ContextVar' is not an acceptable base type)r r r
r r )r
r r r r )r r r r G s zContextVarMeta.__new__c C s d S )Nr )r �namer r r r( M s zContextVarMeta.__getitem__)r r
r r r( r r r )r r r/ C s r/ c @ sJ e Zd Zed�dd�Zedd� �Zefdd�Zdd � Zd
d � Z d d
� Z
dS )r )�defaultc C s" t |t�std��|| _|| _d S )Nz#context variable name must be a str)r& �strr �_name�_default)r r0 r1 r r r r S s
zContextVar.__init__c C s | j S )N)r3 )r r r r r0 Y s zContextVar.namec C sH t � }y|| S tk
r" Y nX |tk r0|S | jtk r@| jS t�d S )N)r �KeyError� _NO_DEFAULTr4 � LookupError)r r1 �ctxr r r �get] s
zContextVar.getc C sR t � }|j}y || }W n tk
r2 tj}Y nX |j| |�}||_t|| |�S )N)r r r5 r �MISSING�set)r �valuer8 �data� old_valueZ updated_datar r r r; l s zContextVar.setc C sv |j rtd��|j| k r td��|jt� k r4td��|j}|jtjkrX|j j
|j�|_ n|j j |j|j�|_ d|_ d S )Nz Token has already been used oncez+Token was created by a different ContextVarz(Token was created in a different ContextT) �_usedr �_var�
ValueError�_contextr �
_old_valuer r: r �deleter; )r �tokenr8 r r r �resetx s
zContextVar.resetc C s8 dj | j�}| jtk r&|dj | j�7 }|dj t| �� S )Nz<ContextVar name={!r}z
default={!r}z
at {:0x}>)r r0 r4 r6 �id)r �rr r r �__repr__� s
zContextVar.__repr__N) r r
r r6 r �propertyr0 r9 r; rF rI r r r r r Q s c s e Zd Z� fdd�Z� ZS )� TokenMetac s2 t � j| |||�}|jdks&|jdkr.td��|S )Nr r z+type 'Token' is not an acceptable base type)r r r
r r )r
r r r r )r r r r � s zTokenMeta.__new__)r r
r r r r r )r r rK � s rK c @ s: e Zd Ze� Zdd� Zedd� �Zedd� �Zdd� Z d S )
r c C s || _ || _|| _d| _d S )NF)rB r@ rC r? )r �contextr' r> r r r r � s zToken.__init__c C s | j S )N)r@ )r r r r r' � s z Token.varc C s | j S )N)rC )r r r r r> � s zToken.old_valuec C s, d}| j r|d7 }|dj| jt| ��7 }|S )Nz<Token z usedz var={!r} at {:0x}>)r? r r@ rG )r rH r r r rI � s
zToken.__repr__N)
r r
r �objectr: r rJ r' r> rI r r r r r � s
c C s
t � j� S )N)r r% r r r r r � s c C s$ t tdd �} | d kr t� } | t_| S )NrL )�getattr�_stater rL )r8 r r r r � s
r c C s
| t _d S )N)rO rL )r8 r r r r � s r )r r r r )�collections.abc� collectionsZ threadingr �__all__rM r6 �type�abc�Mappingr r r/ r rK r r r r ZlocalrO r r r r �<module> s +B