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o �bp � @ s0 d Z ddlmZ G dd� d�ZG dd� d�ZdS )z6 Generic sentence handling tools: hopefully reusable. � )�Setc @ sN e Zd ZU dZe� Zee ed< dd� Z e dd� �Z dd� Z d efd d �Z d S ) � _BaseSentencea- A base sentence class for a particular protocol. Using this base class, specific sentence classes can almost automatically be created for a particular protocol. To do this, fill the ALLOWED_ATTRIBUTES class attribute using the C{getSentenceAttributes} class method of the producer:: class FooSentence(BaseSentence): """ A sentence for integalactic transmodulator sentences. @ivar transmogrificationConstant: The value used in the transmogrifier while producing this sentence, corrected for gravitational fields. @type transmogrificationConstant: C{Tummy} """ ALLOWED_ATTRIBUTES = FooProtocol.getSentenceAttributes() @ivar presentAttributes: An iterable containing the names of the attributes that are present in this sentence. @type presentAttributes: iterable of C{str} @cvar ALLOWED_ATTRIBUTES: A set of attributes that are allowed in this sentence. @type ALLOWED_ATTRIBUTES: C{set} of C{str} �ALLOWED_ATTRIBUTESc C s || _ dS )z� Initializes a sentence with parsed sentence data. @param sentenceData: The parsed sentence data. @type sentenceData: C{dict} (C{str} -> C{str} or L{None}) N)� _sentenceData)�self� sentenceData� r �?/usr/lib/python3/dist-packages/twisted/positioning/_sentence.py�__init__( s z_BaseSentence.__init__c C s t | j�S )z� An iterable containing the names of the attributes that are present in this sentence. @return: The iterable of names of present attributes. @rtype: iterable of C{str} )�iterr )r r r r �presentAttributes1 s z _BaseSentence.presentAttributesc C s8 || j v r | j�|d�S | jj}|� d|� d�}t|��)z5 Gets an attribute of this sentence. Nz sentences have no z attributes)r r �get� __class__�__name__�AttributeError)r �name� className�msgr r r � __getattr__< s z_BaseSentence.__getattr__�returnc C sV | j �� }dd� t|�D �}d�|�}| j �d�pd}| jj}d|� d|� d|� d �S ) z� Returns a textual representation of this sentence. @return: A textual representation of this sentence. @rtype: C{str} c S s& g | ]\}}|d kr|� d|� ��qS )�typez: r )�.0�k�vr r r � <listcomp>O s & z*_BaseSentence.__repr__.<locals>.<listcomp>z, r z unknown type�<z (z) {z}>)r �items�sorted�joinr r r )r r �data�dataRepr�typeReprr r r r �__repr__G s z_BaseSentence.__repr__N)r � __module__� __qualname__�__doc__�setr r �str�__annotations__r �propertyr r r" r r r r r s r c @ s e Zd ZdZedd� �ZdS )�!_PositioningSentenceProducerMixina� A mixin for certain protocols that produce positioning sentences. This mixin helps protocols that store the layout of sentences that they consume in a C{_SENTENCE_CONTENTS} class variable provide all sentence attributes that can ever occur. It does this by providing a class method, C{getSentenceAttributes}, which iterates over all sentence types and collects the possible sentence attributes. c C s8 dh}| j �� D ]}|D ] }|du rq |�|� q q|S )aR Returns a set of all attributes that might be found in the sentences produced by this protocol. This is basically a set of all the attributes of all the sentences that this protocol can produce. @return: The set of all possible sentence attribute names. @rtype: C{set} of C{str} r N)�_SENTENCE_CONTENTS�values�add)�cls� attributes� attributeList� attributer r r �getSentenceAttributesc s �z7_PositioningSentenceProducerMixin.getSentenceAttributesN)r r# r$ r% � classmethodr2 r r r r r* X s r* N)r% �typingr r r* r r r r �<module> s O
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