��YfY�@s�dZdZddgZddlZddlZddlZddlZddlZddlm Z m Z mZmZm Z Gdd�de�Zd d �Zdddd ddd�Zdd�Zdd�Zedkr�ejee��dS)zZParser driver. This provides a high-level interface to parse a file into a syntax tree. z#Guido van Rossum �Driver�load_grammar�N�)�grammar�parse�token�tokenize�pgenc@speZdZdddd�Zddd�Zddd�Zdd d �Zdddd�Zdd d�ZdS)rNcCs7||_|dkr!tj�}||_||_dS)N)r�logging� getLogger�logger�convert)�selfrr r�r�9/opt/alt/python35/lib64/python3.5/lib2to3/pgen2/driver.py�__init__s zDriver.__init__FcCs"tj|j|j�}|j�d}d}d}}}} } d}x�|D]�}|\}}}} } |||fkr||f|ks�t||f|f��|\} }|| kr�|d| |7}| }d}||kr|| ||�7}|}|tjtjfkrT||7}| \}}|j d�rQ|d7}d}qQ|t jkrptj|}|r�|j jdt j|||�|j||||f�r�|r�|j jd�Pd}| \}}|j d�rQ|d7}d}qQWtjd||||f��|jS) z4Parse a series of tokens and return the syntax tree.rrN�� z%s %r (prefix=%r)zStop.zincomplete input)rZParserrr Zsetup�AssertionErrorr�COMMENT�NL�endswithr�OPZopmapr�debug�tok_nameZaddtokenZ ParseErrorZrootnode)r�tokensr�p�lineno�column�type�value�start�endZ line_text�prefixZ quintupleZs_linenoZs_columnrrr�parse_tokens&sT * zDriver.parse_tokenscCs"tj|j�}|j||�S)z*Parse a stream and return the syntax tree.)r�generate_tokens�readliner$)r�streamrrrrr�parse_stream_rawVszDriver.parse_stream_rawcCs|j||�S)z*Parse a stream and return the syntax tree.)r()rr'rrrr�parse_stream[szDriver.parse_streamc Cs;tj|d|�}z|j||�SWd|j�XdS)z(Parse a file and return the syntax tree.�rN)�codecs�openr)�close)r�filename�encodingrr'rrr� parse_file_szDriver.parse_filecCs+tjtj|�j�}|j||�S)z*Parse a string and return the syntax tree.)rr%�io�StringIOr&r$)r�textrrrrr�parse_stringgszDriver.parse_string) �__name__� __module__�__qualname__rr$r(r)r0r4rrrrrs0cCsOtjj|�\}}|dkr*d}||djtttj��dS)Nz.txtr�.z.pickle)�os�path�splitext�join�map�str�sys�version_info)�gt�head�tailrrr�_generate_pickle_namemsrDzGrammar.txtTFcCs�|dkrtj�}|dkr0t|�n|}|sLt||�r�|jd|�tj|�}|r�|jd|�y|j|�Wq�tk r�}z|jd|�WYdd}~Xq�Xnt j �}|j|�|S)z'Load the grammar (maybe from a pickle).Nz!Generating grammar tables from %szWriting grammar tables to %szWriting failed: %s)r rrD�_newer�infor Zgenerate_grammar�dump�OSErrorrZGrammar�load)rAZgp�save�forcer�g�errrrts& cCsNtjj|�sdStjj|�s,dStjj|�tjj|�kS)z0Inquire whether file a was written since file b.FT)r9r:�exists�getmtime)�a�brrrrE�s rEcGsf|stjdd�}tjdtjdtjdd�x$|D]}t|ddd d�qBWdS) z�Main program, when run as a script: produce grammar pickle files. Calls load_grammar for each argument, a path to a grammar text file. rN�levelr'�formatz%(message)srJTrK)r?�argvr ZbasicConfig�INFO�stdoutr)�argsrArrr�main�s rX�__main__)�__doc__� __author__�__all__r+r1r9r r?rrrrrr �objectrrDrrErXr5�exit�intrrrr�s (P