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Z d 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
s %s %r (prefix=%r)s Stop.t s incomplete inputN( R t ParserR R t setupR R t COMMENTt NLt endswithR t OPt opmapR
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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_rawW 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
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/lib64/python2.7/lib2to3/pgen2/driver.pyt parse_stringh s N(
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j } | j | | 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 RG t _newert infoR t generate_grammart dumpt IOErrorR t Grammart load( RD 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/lib64/python2.7/lib2to3/pgen2/driver.pyRH s
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| | S( s Normally, loads a pickled grammar by doing
pkgutil.get_data(package, pickled_grammar)
where *pickled_grammar* is computed from *grammar_source* by adding the
Python version and using a ``.pickle`` extension.
However, if *grammar_source* is an extant file, load_grammar(grammar_source)
is called instead. This facilitates using a packaged grammar file when needed
but preserves load_grammar's automatic regeneration behavior when possible.
( R< R= t isfileR RG t basenamet pkgutilt get_dataR RM t loads( t packaget grammar_sourcet pickled_namet dataRR ( ( s, /usr/lib64/python2.7/lib2to3/pgen2/driver.pyt load_packaged_grammar 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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