AlkantarClanX12
Current Path : /lib64/python3.8/lib2to3/__pycache__/ |
Current File : //lib64/python3.8/lib2to3/__pycache__/patcomp.cpython-38.pyc |
U e5d� � @ s� d Z dZddlZddlmZmZmZmZmZm Z ddl mZ ddl mZ G dd � d e �Zd d� ZG dd � 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 �'/usr/lib64/python3.8/lib2to3/patcomp.pyr s r c c sL t jt jt jh}t�t�| �j�}|D ] }|\}}}}}||kr&|V q&dS )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� Zdd d �Zdd� ZdS )�PatternCompilerNc C sZ |dkrt j| _t j| _nt�|�| _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 Zload_grammarZSymbolsZpython_grammarZ pygrammarZpython_symbols�pysymsZDriver�pattern_convert)�selfZgrammar_filer r r �__init__( s zPatternCompiler.__init__Fc C sp t |�}z| jj||d�}W n2 tjk rN } ztt|��d�W 5 d}~X Y nX |rb| �|�|fS | �|�S dS )z=Compiles a pattern string to a nested pytree.*Pattern object.)�debugN)r r Zparse_tokensr Z ParseErrorr �str�compile_node)r$ r r&