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편집 파일: _pclass.cpython-39.pyc
a `�]_�% � @ s� d dl mZmZmZmZ d dlmZmZmZm Z m Z m Z d dl m Z dd� ZG dd� de�Ze� Zdd � ZG d d � d eed �ZG d d� de�ZdS )� )�InvariantException� CheckedType�_restore_pickle�store_invariants)� set_fields� check_type� is_field_ignore_extra_complaint�PFIELD_NO_INITIAL� serialize�check_global_invariants�� transformc C s t | �dko| d tkS )N� r )�lenr )�bases� r �8/usr/lib64/python3.9/site-packages/pyrsistent/_pclass.py� _is_pclass s r c s e Zd Z� fdd�Z� ZS )� PClassMetac sh t ||dd� t||dd� dtdd� |d D �� |d< t|�rR|d d 7 < tt| ��| |||�S ) N�_pclass_fields)�name�_pclass_invariantsZ __invariant__)�_pclass_frozenc s s | ] }|V qd S �Nr ��.0�keyr r r � <genexpr> � z%PClassMeta.__new__.<locals>.<genexpr>� __slots__)� __weakref__)r r �tupler �superr �__new__)Zmcsr r Zdct�� __class__r r r# s zPClassMeta.__new__)�__name__� __module__� __qualname__r# � __classcell__r r r$ r r s r c C s< t | |||� |�|�\}}|s,|�|� n t|||� d S r )r Z invariant�append�setattr)�cls�fieldr �value�result�invariant_errorsZis_okZ error_coder r r �_check_and_set_attr s r1 c s� e Zd ZdZ� fdd�Zdd� Zed"dd ��Zd#d d �Zd d � Z dd� Z dd� Z dd� Z � fdd�Z dd� Zdd� Zdd� Zd d � Zd d � Zd d!� Z� ZS )$�PClassa� A PClass is a python class with a fixed set of specified fields. PClasses are declared as python classes inheriting from PClass. It is defined the same way that PRecords are and behaves like a PRecord in all aspects except that it is not a PMap and hence not a collection but rather a plain Python object. More documentation and examples of PClass usage is available at https://github.com/tobgu/pyrsistent c sR t t| ��| �}|�dd �}|�dd �}g }g }| j�� D ]�\}}||v r�|d u sZ||v r�tt||�rz|j|| |d�} q�|�|| �} n|| } t| ||| ||� ||= q:|j t ur�t |j �r�|� � n|j } t| ||| ||� q:|j r:|� d�| j|�� q:|�s |�r tt|�t|�d��|�r<td�d�|�| j���t|| j� d|_|S ) N�_factory_fields� ignore_extra)r4 z{0}.{1}zField invariant failedz0'{0}' are not among the specified fields for {1}�, T)r" r2 r# �popr �itemsr �factoryr1 �initialr �callableZ mandatoryr* �formatr& r r! �AttributeError�joinr r r ) r, �kwargsr/ �factory_fieldsr4 Zmissing_fieldsr0 r r- r. r9 r$ r r r# . s< � � zPClass.__new__c O s` |r|d ||d < t |�}| jD ](}||vr"t| |t�}|tur"|||< q"| jf d|i|��S )a Set a field in the instance. Returns a new instance with the updated value. The original instance remains unmodified. Accepts key-value pairs or single string representing the field name and a value. >>> from pyrsistent import PClass, field >>> class AClass(PClass): ... x = field() ... >>> a = AClass(x=1) >>> a2 = a.set(x=2) >>> a3 = a.set('x', 3) >>> a AClass(x=1) >>> a2 AClass(x=2) >>> a3 AClass(x=3) r r r3 )�setr �getattr�_MISSING_VALUEr% )�self�argsr> r? r r. r r r r@ R s z PClass.setNFc s: t � | �r� S |r&� fdd�| jD �� | f ||d�� ��S )a: Factory method. Will create a new PClass of the current type and assign the values specified in kwargs. :param ignore_extra: A boolean which when set to True will ignore any keys which appear in kwargs that are not in the set of fields on the PClass. c s i | ]}|� v r|� | �qS r r )r �k�r> r r � <dictcomp> r z!PClass.create.<locals>.<dictcomp>)r3 r4 )� isinstancer )r, r> r3 r4 r rF r �creater s z PClass.createc C s@ i }| j D ]0}t| |t�}|tur t| j | j||�||< q |S )z� Serialize the current PClass using custom serializer functions for fields where such have been supplied. )r rA rB r Z serializer)rC r; r/ r r. r r r r � s zPClass.serializec G s t | |�S )aT Apply transformations to the currency PClass. For more details on transformations see the documentation for PMap. Transformations on PClasses do not support key matching since the PClass is not a collection. Apart from that the transformations available for other persistent types work as expected. r )rC Ztransformationsr r r r � s zPClass.transformc C s> t || j�r:| jD ]"}t| |t�t||t�kr dS qdS tS )NFT)rH r% r rA rB �NotImplemented)rC �otherr r r r �__eq__� s z PClass.__eq__c C s | |k S r r )rC rK r r r �__ne__� s z PClass.__ne__c s t t� fdd�� jD ���S )Nc 3 s | ]}|t � |t�fV qd S r )rA rB r �rC r r r � r z"PClass.__hash__.<locals>.<genexpr>)�hashr! r rN r rN r �__hash__� s zPClass.__hash__c s2 t | dd�r td�||���tt| ��||� d S )Nr Fz'Can't set attribute, key={0}, value={1})rA r< r; r" r2 � __setattr__�rC r r. r$ r r rQ � s zPClass.__setattr__c C s t d�|���d S )Nz-Can't delete attribute, key={0}, use remove())r< r; )rC r r r r � __delattr__� s zPClass.__delattr__c C s0 i }| j D ] }t| |t�}|tur |||< q |S r )r rA rB )rC r/ r r. r r r �_to_dict� s zPClass._to_dictc C s( d� | jjd�dd� | �� �� D ���S )Nz{0}({1})r5 c s s" | ]\}}d � |t|��V qdS )z{0}={1}N)r; �repr)r rE �vr r r r � r z"PClass.__repr__.<locals>.<genexpr>)r; r% r& r= rT r7 rN r r r �__repr__� s �zPClass.__repr__c s& t � fdd�� jD ��}t� j|ffS )Nc 3 s& | ] }t � |�r|t� |�fV qd S r )�hasattrrA r rN r r r � r z$PClass.__reduce__.<locals>.<genexpr>)�dictr r r% )rC �datar rN r � __reduce__� s zPClass.__reduce__c C s t | | �� �S )z5 Returns an evolver for this object. )�_PClassEvolverrT rN r r r �evolver� s zPClass.evolverc C s | � � }||= |�� S )z� Remove attribute given by name from the current instance. Raises AttributeError if the attribute doesn't exist. )r] � persistent)rC r r] r r r �remove� s z PClass.remove)NF)N)r& r' r( �__doc__r# r@ � classmethodrI r r rL rM rP rQ rS rT rW r[ r] r_ r) r r r$ r r2 % s" $ r2 )� metaclassc s` e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z � fdd�Z dd� Z � Z S )r\ )�_pclass_evolver_original�_pclass_evolver_data� _pclass_evolver_data_is_dirtyr3 c C s || _ || _d| _t� | _d S )NF)rc rd re r@ r3 )rC �originalZ initial_dictr r r �__init__� s z_PClassEvolver.__init__c C s | j | S r )rd �rC �itemr r r � __getitem__� s z_PClassEvolver.__getitem__c C s2 | j �|t�|ur.|| j |< | j�|� d| _| S �NT)rd �getrB r3 �addre rR r r r r@ � s z_PClassEvolver.setc C s | � ||� d S r )r@ rR r r r � __setitem__� s z_PClassEvolver.__setitem__c C s4 || j v r(| j |= | j�|� d| _| S t|��d S rk )rd r3 �discardre r< rh r r r r_ � s z_PClassEvolver.removec C s | � |� d S r )r_ rh r r r � __delitem__� s z_PClassEvolver.__delitem__c C s& | j r | jjf d| ji| j��S | jS )Nr3 )re rc r% r3 rd rN r r r r^ � s �z_PClassEvolver.persistentc s. || j vr| �||� ntt| ��||� d S r )r r@ r" r\ rQ rR r$ r r rQ � s z_PClassEvolver.__setattr__c C s | | S r r rh r r r � __getattr__ s z_PClassEvolver.__getattr__)r& r' r( r rg rj r@ rn r_ rp r^ rQ rq r) r r r$ r r\ � s r\ N)Zpyrsistent._checked_typesr r r r Zpyrsistent._field_commonr r r r r r Zpyrsistent._transformationsr r �typer �objectrB r1 r2 r\ r r r r �<module> s 1