Edit File: advice.cpython-36.pyc
3 ��[> � @ sv d Z ddlmZ yddlmZ W n ek r8 dZY nX dZddlZdd� Zdd d �Zd d � Z ddd�Z dd� Z dS )aj Class advice. This module was adapted from 'protocols.advice', part of the Python Enterprise Application Kit (PEAK). Please notify the PEAK authors (pje@telecommunity.com and tsarna@sarna.org) if bugs are found or Zope-specific changes are required, so that the PEAK version of this module can be kept in sync. PEAK is a Python application framework that interoperates with (but does not require) Zope 3 and Twisted. It provides tools for manipulating UML models, object-relational persistence, aspect-oriented programming, and more. Visit the PEAK home page at http://peak.telecommunity.com for more information. � )� FunctionType)� ClassTypeTFNc C s� | j }| j}||k}d|k}d|k}|o*|}|o>|d |d k}|rTtjj|d �pVd}|od|j|k}|spd} n.|r�| r�d} n |r�| r�d} n|s�d} nd} | |||fS ) z�Return (kind,module,locals,globals) for a frame 'kind' is one of "exec", "module", "class", "function call", or "unknown". � __module__�__name__N�exec�module�classz function call�unknown)�f_locals� f_globals�sys�modules�get�__dict__) �framer r Z sameNamespaceZ hasModuleZhasNameZsameNamer ZnamespaceIsModule�kind� r � /usr/lib64/python3.6/advice.py� getFrameInfo& s& r � c sv t r td��tj|�}t|�\}}}}|jd��t rB|jdt��n |jdt��� ��fdd�}�|_� |_ ||d< dS )a2 Set up 'callback' to be passed the containing class upon creation This function is designed to be called by an "advising" function executed in a class suite. The "advising" function supplies a callback that it wishes to have executed when the containing class is created. The callback will be given one argument: the newly created containing class. The return value of the callback will be used in place of the class, so the callback should return the input if it does not wish to replace the class. The optional 'depth' argument to this function determines the number of frames between this function and the targeted class suite. 'depth' defaults to 2, since this skips this function's frame and one calling function frame. If you use this function from a function called directly in the class suite, the default will be correct, otherwise you will need to determine the correct depth yourself. This function works by installing a special class factory function in place of the '__metaclass__' of the containing class. Therefore, only callbacks *after* the last '__metaclass__' assignment in the containing class will be executed. Be sure that classes using "advising" functions declare any '__metaclass__' *first*, to ensure all callbacks are run.z"Class advice impossible in Python3� __metaclass__c sV d|kr|d= �d kr*|r$t |�}qB�}nt��r8�}n t |��}|| ||�}� |�S )Nr )�determineMetaclass�isClassAdvisor)�name�basesZcdict�metaZnewClass)�callback�defaultMetaclass�previousMetaclassr r �advisex s z addClassAdvisor.<locals>.adviseN) � __python3� TypeErrorr � _getframer r �typer r r )r �depthr r r Z caller_localsZcaller_globalsr r )r r r r �addClassAdvisorJ s r% c C s t | t�ot| d�S )z(True if 'ob' is a class advisor functionr )� isinstancer �hasattr)�obr r r r � s r c C sl dd� | D �}|dk r |j |� t|�dkr4|d S t|�}|sNt sJt�tS t|�dkrdtd| ��|d S )zEDetermine metaclass from 1+ bases and optional explicit __metaclass__c S s g | ]}t |d t|���qS )� __class__)�getattrr# )�.0�br r r � <listcomp>� s z&determineMetaclass.<locals>.<listcomp>N� r zIncompatible metatypes)�append�len� minimalBasesr �AssertionErrorr r! )r Z explicit_mcr � candidatesr r r r � s r c C sf t sdd� | D �} g }xJ| D ]B}x<| D ]}t||�r&||k r&P q&W ||krT|j|� |j|� q W |S )z?Reduce a list of base classes to its ordered minimum equivalentc S s g | ]}|t k r|�qS r )r )r+ �cr r r r- � s z minimalBases.<locals>.<listcomp>)r � issubclass�remover/ )�classesr3 �m�nr r r r1 � s r1 )r )N) �__doc__�typesr r � ImportErrorr r r r% r r r1 r r r r �<module> s $ P
Back to File Manager