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This provides a high-level interface to parse a file into a syntax tree.
s# Guido van Rossum <guido@python.org>t Drivert load_grammari����Ni ( t grammart parset tokent tokenizet pgenc B sV e Z d d d � Z e d � Z e d � Z e d � Z d e d � Z e d � Z RS( c C s: | | _ | d k r$ t j � } n | | _ | | _ d S( N( R t Nonet loggingt getLoggert loggert convert( t selfR R R
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s4 Parse a series of tokens and return the syntax tree.i i u s
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c C s" t j | j � } | j | | � S( s* Parse a stream and return the syntax tree.( R t generate_tokenst readlineR) ( R t streamR R ( ( s, /usr/lib64/python2.7/lib2to3/pgen2/driver.pyt parse_stream_rawV s c C s | j | | � S( s* Parse a stream and return the syntax tree.( R- ( R R, R ( ( s, /usr/lib64/python2.7/lib2to3/pgen2/driver.pyt parse_stream[ s c C s; t j | d | � } z | j | | � SWd | j � Xd S( s( Parse a file and return the syntax tree.t rN( t codecst openR. t close( R t filenamet encodingR R, ( ( s, /usr/lib64/python2.7/lib2to3/pgen2/driver.pyt
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Xq&n t j � } | j | � | S( s' Load the grammar (maybe from a pickle).s .txtR t .s .pickles! Generating grammar tables from %ss Writing grammar tables to %ss Writing failed:N( R R R t ost patht splitextt joint mapt strt syst version_infot _newert infoR t generate_grammart dumpt IOErrorR t Grammart load( t gtt gpt savet forceR
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c C sN t j j | � s t St j j | � s, t St j j | � t j j | � k S( s0 Inquire whether file a was written since file b.( R= R> t existsR; t Truet getmtime( t at b( ( s, /usr/lib64/python2.7/lib2to3/pgen2/driver.pyRE � s
c G sc | s t j d } n t j d t j d t j d d � x$ | D] } t | d t d t �q? Wt S( s� Main program, when run as a script: produce grammar pickle files.
Calls load_grammar for each argument, a path to a grammar text file.
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