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� Z e d k r� e j e e � � � n d S( sZ Parser driver.
This provides a high-level interface to parse a file into a syntax tree.
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s4 Parse a series of tokens and return the syntax tree.i i u s
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parse_file_ s c C s+ t j t j | � j � } | j | | � S( s* Parse a string and return the syntax tree.( R R* t StringIOR+ R) ( R t textR R ( ( s* /usr/lib/python2.7/lib2to3/pgen2/driver.pyt parse_stringg s N(
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| � | S( s' Load the grammar (maybe from a pickle).s! Generating grammar tables from %ss Writing grammar tables to %ss Writing failed: %sN( R R R RH t _newert infoR t generate_grammarR; t dumpt IOErrorR t Grammart load( RE t 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/lib/python2.7/lib2to3/pgen2/driver.pyRI � 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.
i t levelR, t formats %(message)sRQ RR ( RC t argvR t basicConfigt INFOt stdoutR RV ( t argsRE ( ( s* /usr/lib/python2.7/lib2to3/pgen2/driver.pyt main� s
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