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Editing: driver.cpython-35.pyc
��YfY � @ s� d Z d Z d d g Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l m Z m Z m Z m Z m Z Gd d � d e � Z d d � Z d d d d d d d � Z d d � Z d d � Z e d k r� e j e e � � � d S)zZParser driver. This provides a high-level interface to parse a file into a syntax tree. z#Guido van Rossum <guido@python.org>�Driver� load_grammar� N� )�grammar�parse�token�tokenize�pgenc @ sp e Z d Z d d d d � Z d d d � Z d d d � Z d d d � Z d d d d � Z d d d � Z d S)r Nc C s7 | | _ | d k r! t j � } | | _ | | _ d S)N)r �logging� getLogger�logger�convert)�selfr r r � r �9/opt/alt/python35/lib64/python3.5/lib2to3/pgen2/driver.py�__init__ s zDriver.__init__Fc C s" t j | j | j � } | j � d } d } d } } } } } d } x�| D]�} | \ } } } } } | | | f k r| | f | k s� t | | f | f � � | \ } } | | k r� | d | | 7} | } d } | | k r| | | | � 7} | } | t j t j f k rT| | 7} | \ } } | j d � rQ | d 7} d } qQ | t j k rpt j | } | r�| j j d t j | | | � | j | | | | f � r�| r�| j j d � Pd } | \ } } | j d � rQ | d 7} d } qQ Wt j d | | | | f � � | j S) z4Parse a series of tokens and return the syntax tree.r r N� � z%s %r (prefix=%r)zStop.zincomplete input)r ZParserr r Zsetup�AssertionErrorr �COMMENT�NL�endswithr �OPZopmapr �debug�tok_nameZaddtokenZ ParseErrorZrootnode)r �tokensr �p�lineno�column�type�value�start�endZ line_text�prefixZ quintupleZs_linenoZs_columnr r r � parse_tokens& sT * zDriver.parse_tokensc C s" t j | j � } | j | | � S)z*Parse a stream and return the syntax tree.)r �generate_tokens�readliner$ )r �streamr r r r r �parse_stream_rawV s zDriver.parse_stream_rawc C s | j | | � S)z*Parse a stream and return the syntax tree.)r( )r r' r r r r � parse_stream[ s zDriver.parse_streamc C s; t j | d | � } z | j | | � SWd | j � Xd S)z(Parse a file and return the syntax tree.�rN)�codecs�openr) �close)r �filename�encodingr r' r r r � parse_file_ s zDriver.parse_filec C s+ t j t j | � j � } | j | | � S)z*Parse a string and return the syntax tree.)r r% �io�StringIOr& r$ )r �textr r r r r � parse_stringg s zDriver.parse_string) �__name__� __module__� __qualname__r r$ r( r) r0 r4 r r r r r s 0c C sO t j j | � \ } } | d k r* d } | | d j t t t j � � d S)Nz.txtr �.z.pickle)�os�path�splitext�join�map�str�sys� version_info)�gt�head�tailr r r �_generate_pickle_namem s rD z Grammar.txtTFc C s� | d k r t j � } | d k r0 t | � n | } | sL t | | � r� | j d | � t j | � } | r� | j d | � y | j | � Wq� t k r� } z | j d | � WYd d } ~ Xq� Xn t j � } | j | � | S)z'Load the grammar (maybe from a pickle).Nz!Generating grammar tables from %sz Writing grammar tables to %szWriting failed: %s) r r rD �_newer�infor Zgenerate_grammar�dump�OSErrorr ZGrammar�load)rA Zgp�save�forcer �g�er r r r t s & c C sN t j j | � s d St j j | � s, d St j j | � t j j | � k S)z0Inquire whether file a was written since file b.FT)r9 r: �exists�getmtime)�a�br r r rE � s rE c G sf | s t j d d � } t j d t j d t j d d � x$ | D] } t | d d d d �qB Wd S) 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. r N�levelr' �formatz %(message)srJ TrK )r? �argvr Z basicConfig�INFO�stdoutr )�argsrA r r r �main� s rX �__main__)�__doc__� __author__�__all__r+ r1 r9 r r? r r r r r r �objectr rD r rE rX r5 �exit�intr r r r �<module> s (P
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