File: //lib/python3.9/site-packages/dns/__pycache__/set.cpython-39.opt-1.pyc
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�M�e�# � @ s d dl Z G dd� d�ZdS )� Nc @ sN e Zd ZdZdgZdQdd�Zdd� Zdd � Zd
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dd� Zdd� Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zd1d2� Zd3d4� Z d5d6� Z d7d8� Z d9d:� Z d;d<� Z d=d>� Z!d?d@� Z"dAdB� Z#dCdD� Z$dEdF� Z%dGdH� Z&dIdJ� Z'dKdL� Z(dMdN� Z)dOdP� Z*dS )R�Seta! A simple set class.
This class was originally used to deal with sets being missing in
ancient versions of python, but dnspython will continue to use it
as these sets are based on lists and are thus indexable, and this
ability is widely used in dnspython applications.
�itemsNc C s( t � | _|dur$|D ]}| �|� qdS )zaInitialize the set.
*items*, an iterable or ``None``, the initial set of items.
N)�dictr �add)�selfr �item� r �+/usr/lib/python3.9/site-packages/dns/set.py�__init__ s z Set.__init__c C s dt t| j�� �� S )Nzdns.set.Set(%s))�repr�listr �keys�r r r r �__repr__- s z Set.__repr__c C s || j vrd| j |< dS )zAdd an item to the set.N�r �r r r r r r 0 s
zSet.addc C s( z | j |= W n ty" t�Y n0 dS )z Remove an item from the set.N)r �KeyError�
ValueErrorr r r r �remove6 s z
Set.removec C s | j �|d� dS )z'Remove an item from the set if present.N)r �popr r r r �discard> s z Set.discardc C s | j �� \}}|S )z&Remove an arbitrary item from the set.)r �popitem)r �k�_r r r r C s zSet.pop)�returnc C s< t | d�r| j}n| j}|�|�}t� |_|j�| j� |S )a� Make a (shallow) copy of the set.
There is a 'clone protocol' that subclasses of this class
should use. To make a copy, first call your super's _clone()
method, and use the object returned as the new instance. Then
make shallow copies of the attributes defined in the subclass.
This protocol allows us to write the set algorithms that
return new instances (e.g. union) once, and keep using them in
subclasses.
� _clone_class)�hasattrr � __class__�__new__r r �update)r �cls�objr r r �_cloneH s
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Set._clonec C s | � � S �z!Make a (shallow) copy of the set.�r" r r r r �__copy__^ s z Set.__copy__c C s | � � S r# r$ r r r r �copyc s zSet.copyc C s8 t |t�std��| |u r dS |jD ]}| �|� q$dS )zaUpdate the set, adding any elements from other which are not
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isinstancer r r r �r �otherr r r r � union_updateh s
zSet.union_updatec C sD t |t�std��| |u r dS t| j�D ]}||jvr(| j|= q(dS )z]Update the set, removing any elements from other which are not
in both sets.
r' N)r( r r r r r) r r r �intersection_updatet s
zSet.intersection_updatec C s@ t |t�std��| |u r&| j�� n|jD ]}| �|� q,dS )zWUpdate the set, removing any elements from other which are in
the set.
r' N)r( r r r �clearr r) r r r �difference_update� s
zSet.difference_updatec C sH t |t�std��| |u r&| j�� n | �|�}| �|� | �|� dS )z<Update the set, retaining only elements unique to both sets.r' N)r( r r r r- � intersectionr+ r. )r r* Zoverlapr r r �symmetric_difference_update� s
z Set.symmetric_difference_updatec C s | � � }|�|� |S )zwReturn a new set which is the union of ``self`` and ``other``.
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)r" r+ �r r* r! r r r �union� s
z Set.unionc C s | � � }|�|� |S )z�Return a new set which is the intersection of ``self`` and
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)r" r, r1 r r r r/ � s
zSet.intersectionc C s | � � }|�|� |S )z�Return a new set which ``self`` - ``other``, i.e. the items
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)r" r. r1 r r r �
difference� s
zSet.differencec C s | � � }|�|� |S )z�Return a new set which (``self`` - ``other``) | (``other``
- ``self), ie: the items in either ``self`` or ``other`` which
are not contained in their intersection.
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)r" r0 r1 r r r �symmetric_difference� s
zSet.symmetric_differencec C s
| � |�S �N�r2 �r r* r r r �__or__� s z
Set.__or__c C s
| � |�S r5 )r/ r7 r r r �__and__� s z Set.__and__c C s
| � |�S r5 r6 r7 r r r �__add__� s z Set.__add__c C s
| � |�S r5 )r3 r7 r r r �__sub__� s z Set.__sub__c C s
| � |�S r5 )r4 r7 r r r �__xor__� s z Set.__xor__c C s | � |� | S r5 �r+ r7 r r r �__ior__� s
z Set.__ior__c C s | � |� | S r5 )r, r7 r r r �__iand__� s
z Set.__iand__c C s | � |� | S r5 r= r7 r r r �__iadd__� s
z Set.__iadd__c C s | � |� | S r5 )r. r7 r r r �__isub__� s
z Set.__isub__c C s | � |� | S r5 )r0 r7 r r r �__ixor__� s
z Set.__ixor__c C s |D ]}| � |� qdS )z�Update the set, adding any elements from other which are not
already in the set.
*other*, the collection of items with which to update the set, which
may be any iterable type.
N)r r) r r r r � s z
Set.updatec C s | j �� dS )zMake the set empty.N)r r- r r r r r- � s z Set.clearc C s | j |j kS r5 r r7 r r r �__eq__� s z
Set.__eq__c C s | � |� S r5 )rC r7 r r r �__ne__� s z
Set.__ne__c C s
t | j�S r5 )�lenr r r r r �__len__ s z Set.__len__c C s
t | j�S r5 )�iterr r r r r �__iter__ s z Set.__iter__c C sB t |t�r&tt�| j|j|j|j��S t t�| j||d ��S d S )N� )
r( �slicer � itertools�islicer �start�stop�step�next)r �ir r r � __getitem__ s
zSet.__getitem__c C s6 t |t�r&t| | �D ] }| j|= qn | j| | = d S r5 )r( rJ r r )r rQ �eltr r r � __delitem__ s
zSet.__delitem__c C s2 t |t�std��| jD ]}||jvr dS qdS )zFIs this set a subset of *other*?
Returns a ``bool``.
r' FT�r( r r r r) r r r �issubset s
z Set.issubsetc C s2 t |t�std��|jD ]}|| jvr dS qdS )zHIs this set a superset of *other*?
Returns a ``bool``.
r' FTrU r) r r r �
issuperset s
zSet.issupersetc C s2 t |t�std��|jD ]}|| jv r dS qdS )Nr' FTrU r) r r r �
isdisjoint- s
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