OwlCyberSecurity - MANAGER
Edit File: patcomp.cpython-310.opt-1.pyc
o �?Og� � @ s� d Z dZddlZddlmZmZmZmZmZm Z ddl m Z ddl m Z G dd � d e �Zd d � ZG d d � d e�Zejejejdd�Zdd� Zdd� Zdd� ZdS )z�Pattern compiler. The grammar is taken from PatternGrammar.txt. The compiler compiles a pattern to a pytree.*Pattern instance. z#Guido van Rossum <guido@python.org>� N� )�driver�literals�token�tokenize�parse�grammar)�pytree)�pygramc @ s e Zd ZdS )�PatternSyntaxErrorN)�__name__� __module__� __qualname__� r r �6/opt/alt/python310/lib64/python3.10/lib2to3/patcomp.pyr s r c c sN � t jt jt jh}t�t�| �j�}|D ]}|\}}}}}||vr$|V qdS )z6Tokenizes a string suppressing significant whitespace.N) r �NEWLINE�INDENT�DEDENTr �generate_tokens�io�StringIO�readline) �input�skip�tokensZ quintuple�type�value�start�endZ line_textr r r �tokenize_wrapper s ���r c @ s: e Zd Zd dd�Zddd�Zdd� Zd d d �Zd d � ZdS )�PatternCompilerNc C sZ |du r t j| _t j| _n t�|�| _t �| j�| _t j| _ t j | _ tj | jt d�| _dS )z^Initializer. Takes an optional alternative filename for the pattern grammar. N)Zconvert)r Zpattern_grammarr Zpattern_symbols�symsr Z load_grammarZSymbolsZpython_grammarZ pygrammarZpython_symbols�pysymsZDriver�pattern_convert)�selfZ grammar_filer r r �__init__( s zPatternCompiler.__init__Fc C sb t |�}z | jj||d�}W n tjy" } ztt|��d�d}~ww |r,| �|�|fS | �|�S )z=Compiles a pattern string to a nested pytree.*Pattern object.)�debugN)r r Z parse_tokensr Z ParseErrorr �str� compile_node)r$ r r& Z with_treer �root�er r r �compile_pattern7 s �� z PatternCompiler.compile_patternc sD |j � jjkr |jd }|j � jjkr=� fdd�|jddd� D �}t|�dkr,|d S tjdd� |D �ddd�}|�� S |j � jj kre� fd d�|jD �}t|�dkrX|d S tj|gddd�}|�� S |j � jj kr� � |jdd� �}t� |�}|�� S d}|j}t|�d kr�|d j t jkr�|d j}|dd� }d}t|�dkr�|d j � jjkr�|d }|dd � }� � ||�}|du�r|j} | d } | j t jkr�d} tj} n(| j t jkr�d} tj} n | j t jkr�� �| d � } } t| �d kr�� �| d �} | dk�s| dk�r|�� }tj|gg| | d�}|du�r ||_|�� S ) zXCompiles a node, recursively. This is one big switch on the node type. r c � g | ]}� � |��qS r �r( ��.0Zch�r$ r r � <listcomp>O � z0PatternCompiler.compile_node.<locals>.<listcomp>N� r c S s g | ]}|g�qS r r )r/ �ar r r r1 R s ��min�maxc r, r r- r. r0 r r r1 V r2 � ���� )r r! ZMatcher�childrenZ Alternatives�lenr �WildcardPattern�optimizeZ AlternativeZ NegatedUnit� compile_basicZNegatedPatternr �EQUALr ZRepeater�STARZHUGE�PLUS�LBRACE�get_int�name) r$ �nodeZalts�pZunits�patternrE �nodes�repeatr; �childr6 r7 r r0 r r( C s^ z PatternCompiler.compile_nodec C s: |d }|j tjkrtt�|j��}t�t |�|�S |j tj kry|j}|� � rB|t vr1t d| ��|dd � r;t d��t�t | �S |dkrId }n|�d�s_t| j|d �}|d u r_t d| ��|dd � rq| �|d jd �g}nd }t�||�S |jdkr�| �|d �S |jd kr�| �|d �}tj|ggddd �S d S ) Nr zInvalid token: %rr z Can't have details for token�any�_zInvalid symbol: %r�(�[r5 )r r �STRINGr' r Z evalStringr r Z LeafPattern�_type_of_literal�NAME�isupper� TOKEN_MAPr � startswith�getattrr" r( r; Z NodePatternr= )r$ rI rJ rF r r Zcontent� subpatternr r r r? � s8 �z PatternCompiler.compile_basicc C s t |j�S �N)�intr )r$ rF r r r rD � s zPatternCompiler.get_intrX )FF)r r r r% r+ r( r? rD r r r r r & s G #r )rR rP �NUMBERZTOKENc C s* | d � � r tjS | tjv rtj| S d S )Nr )�isalphar rR r Zopmap)r r r r rQ � s rQ c C s: |\}}}}|s || j v rtj|||d�S tj|||d�S )z9Converts raw node information to a Node or Leaf instance.)�context)Z number2symbolr ZNodeZLeaf)r Z raw_node_infor r r\ r; r r r r# � s r# c C s t � �| �S rX )r r+ )rH r r r r+ � s r+ )�__doc__� __author__r Zpgen2r r r r r r � r r � Exceptionr r �objectr rR rP rZ rT rQ r# r+ r r r r �<module> s$ �