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Edit File: structs.cpython-39.pyc
a J{�_8 � @ sH d dl mZ G dd� de�ZG dd� de�ZG dd� de�Zdd � Zd S ) � )�collections_abcc @ sp e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z dd� Z dd� Z dd� Zdd� ZdS )� DirectedGraphz&A graph structure with directed edges.c C s t � | _i | _i | _d S �N)�set� _vertices� _forwards� _backwards��self� r �6/usr/lib/python3.9/site-packages/resolvelib/structs.py�__init__ s zDirectedGraph.__init__c C s t | j�S r )�iterr r r r r �__iter__ s zDirectedGraph.__iter__c C s t | j�S r )�lenr r r r r �__len__ s zDirectedGraph.__len__c C s || j v S r )r �r �keyr r r � __contains__ s zDirectedGraph.__contains__c C sB t � }t| j�|_dd� | j�� D �|_dd� | j�� D �|_|S )z$Return a shallow copy of this graph.c S s i | ]\}}|t |��qS r �r ��.0�k�vr r r � <dictcomp> � z&DirectedGraph.copy.<locals>.<dictcomp>c S s i | ]\}}|t |��qS r r r r r r r r )r r r r �itemsr )r �otherr r r �copy s zDirectedGraph.copyc C s: || j v rtd��| j �|� t� | j|< t� | j|< dS )z Add a new vertex to the graph.z vertex existsN)r � ValueError�addr r r r r r r r s zDirectedGraph.addc C sT | j �|� | j�|�D ]}| j| �|� q| j�|�D ]}| j| �|� q:dS )zCRemove a vertex from the graph, disconnecting all edges from/to it.N)r �remover �popr )r r �f�tr r r r! % s zDirectedGraph.removec C s || j | v o|| j| v S r )r r �r r# r$ r r r � connected- s zDirectedGraph.connectedc C s6 || j vrt|��| j| �|� | j| �|� dS )zgConnect two existing vertices. Nothing happens if the vertices are already connected. N)r �KeyErrorr r r r% r r r �connect0 s zDirectedGraph.connectc c s, | j �� D ] \}}|D ]}||fV qq d S r )r r )r r# Zchildrenr$ r r r � iter_edges: s zDirectedGraph.iter_edgesc C s t | j| �S r )r r r r r r � iter_children? s zDirectedGraph.iter_childrenc C s t | j| �S r )r r r r r r � iter_parentsB s zDirectedGraph.iter_parentsN)�__name__� __module__� __qualname__�__doc__r r r r r r r! r& r( r) r* r+ r r r r r s r c @ sD e Zd ZdZdd� Zdd� Zdd� ZeZdd � Zd d � Z d d � Z dS )�_FactoryIterableViewa: Wrap an iterator factory returned by `find_matches()`. Calling `iter()` on this class would invoke the underlying iterator factory, making it a "collection with ordering" that can be iterated through multiple times, but lacks random access methods presented in built-in Python sequence types. c C s || _ d S r ��_factory)r �factoryr r r r O s z _FactoryIterableView.__init__c C s d� t| �jt| �� ��S �Nz{}({}))�format�typer, �listr2 r r r r �__repr__R s z _FactoryIterableView.__repr__c C s* zt | �� � W n ty$ Y dS 0 dS )NFT)�nextr2 � StopIterationr r r r �__bool__U s z _FactoryIterableView.__bool__c C s | � � S r r1 r r r r r ^ s z _FactoryIterableView.__iter__c C s | � � S �z4Provide an candidate iterable for `get_preference()`r1 r r r r �for_preferencea s z#_FactoryIterableView.for_preferencec s � �fdd�}t ��|�S )�5Create a new instance excluding specified candidates.c s � fdd��� � D �S )Nc 3 s | ]}|� vr|V qd S r r �r �c�� candidatesr r � <genexpr>i r zB_FactoryIterableView.excluding.<locals>.factory.<locals>.<genexpr>r1 r �rB r r r r3 h s z/_FactoryIterableView.excluding.<locals>.factory)r6 )r rB r3 r rD r � excludinge s z _FactoryIterableView.excludingN) r, r- r. r/ r r8 r; � __nonzero__r r= rE r r r r r0 F s r0 c @ sL e Zd ZdZdd� Zdd� Zdd� ZeZdd � Zd d � Z d d � Z dd� Z dS )�_SequenceIterableViewz�Wrap an iterable returned by find_matches(). This is essentially just a proxy to the underlying sequence that provides the same interface as `_FactoryIterableView`. c C s || _ d S r �� _sequence)r Zsequencer r r r u s z _SequenceIterableView.__init__c C s d� t| �j| j�S r4 )r5 r6 r, rI r r r r r8 x s z _SequenceIterableView.__repr__c C s t | j�S r )�boolrI r r r r r; { s z _SequenceIterableView.__bool__c C s t | j�S r )r rI r r r r r � s z _SequenceIterableView.__iter__c C s t | j�S r )r rI r r r r r � s z _SequenceIterableView.__len__c C s | j S r< rH r r r r r= � s z$_SequenceIterableView.for_preferencec s t | �� fdd�| jD ��S )r> c s g | ]}|� vr|�qS r r r? rA r r � <listcomp>� r z3_SequenceIterableView.excluding.<locals>.<listcomp>)r6 rI )r rB r rA r rE � s z _SequenceIterableView.excludingN) r, r- r. r/ r r8 r; rF r r r= rE r r r r rG n s rG c C s, t | �rt| �S t| tj�s$t| �} t| �S )zCBuild an iterable view from the value returned by `find_matches()`.)�callabler0 � isinstancer �Sequencer7 rG )�matchesr r r �build_iter_view� s rP N)�compatr �objectr r0 rG rP r r r r �<module> s B(!