\dQdZdZddgZddlZddlZddlZddlZddlZddlm Z m Z m Z m Z m Z GddeZd Z dd ZdZdZdZedkr$ejee dSdS)zZParser driver. This provides a high-level interface to parse a file into a syntax tree. z#Guido van Rossum Driver load_grammarN)grammarparsetokentokenizepgenc>eZdZd dZd dZd dZd dZd dZd dZdS) rNcZ||_|tj}||_||_dS)N)rlogging getLoggerloggerconvert)selfrrrs %..\python\lib\lib2to3\pgen2\driver.py__init__zDriver.__init__s. >&((F  FcXtj|j|j}|d}d}dx}x}x}x} } d} |D]D} | \}}}} } |||fkrE||f|ksJ||f|f|\} }|| kr| d| |z zz } | }d}||kr| | ||z } |}|t jt jfvr'| |z } | \}}|dr|dz }d}|tj krtj |}|r-|j dtj||| |||| |fr|r|j dn>d} | \}}|dr|dz }d}Ftjd||| |f|jS) z4Parse a series of tokens and return the syntax tree.rrN z%s %r (prefix=%r)zStop.zincomplete input)rParserrrsetupr COMMENTNLendswithrOPopmaprdebugtok_nameaddtoken ParseErrorrootnode)rtokensrplinenocolumntypevaluestartend line_textprefix quintuples_linenos_columns r parse_tokenszDriver.parse_tokens&s9 Lt| 4 4  1555u5u5sY$ A$ AI1: .D%Y((('5000FF3CU2K000%*"(H$$dh&788F%FFH$$ix88F%F((+666%!$>>$''aKFFux}U+ G !!"5"'."6vGGGzz$77 /K%%g...F NFF~~d## ! "#5#'AA Azrc`tj|j}|||Sz*Parse a stream and return the syntax tree.)r generate_tokensreadliner1)rstreamrr$s rparse_stream_rawzDriver.parse_stream_rawVs*)&/::  ///rc.|||Sr3)r7)rr6rs r parse_streamzDriver.parse_stream[s$$VU333rctj|d|5}|||cdddS#1swxYwYdS)z(Parse a file and return the syntax tree.r)encodingN)ioopenr9)rfilenamer<rr6s r parse_filezDriver.parse_file_s WXsX 6 6 6 4&$$VU33 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4s ;??ctjtj|j}|||S)z*Parse a string and return the syntax tree.)r r4r=StringIOr5r1)rtextrr$s r parse_stringzDriver.parse_stringds5)"+d*;*;*DEE  ///r)NN)F)NF) __name__ __module__ __qualname__rr1r7r9r@rDrrrrs....`0000 44444444 000000rctj|\}}|dkrd}||zdt t t jzdzS)Nz.txtr.z.pickle)ospathsplitextjoinmapstrsys version_info)gtheadtails r_generate_pickle_namerVjsV!!"%%JD$ v~~ $;#c3+;"<"<== = IIr Grammar.txtTFc|tj}|t|n|}|st||s|d|t j|}|rZ|d| ||nV#t$r }|d|Yd}~n1d}~wwxYwn(tj }| ||S)z'Load the grammar (maybe from a pickle).Nz!Generating grammar tables from %szWriting grammar tables to %szWriting failed: %s) r rrV_newerinfor generate_grammardumpOSErrorrGrammarload)rSgpsaveforcerges rrrqs~"$$&(j r " " "bB F2rNN  7<<<  !" % %  5 KK6 ; ; ; 5r  5 5 5 0!44444444 5  5 O   r Hs>B B>B99B>ctj|sdStj|sdStj|tj|kS)z0Inquire whether file a was written since file b.FT)rKrLexistsgetmtime)abs rrYrYsc 7>>!  u 7>>!  t 7  A  "'"2"21"5"5 55rc4tj|rt|St tj|}t j||}tj }| ||S)aNormally, 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. ) rKrLisfilerrVbasenamepkgutilget_datarr^loads)packagegrammar_source pickled_namedatarcs rload_packaged_grammarrtsx w~~n%%,N+++()9)9.)I)IJJL  G\ 2 2DAGGDMMM Hrc|stjdd}tjtjtjd|D]}t |dddS)zMain program, when run as a script: produce grammar pickle files. Calls load_grammar for each argument, a path to a grammar text file. rNz %(message)s)levelr6formatT)rarb)rQargvr basicConfigINFOstdoutr)argsrSs rmainr}sl x| gl3:,....00Rd$///// 4r__main__)rWNTFN)__doc__ __author____all__r=rKr rmrQrrrrr r objectrrVrrYrtr}rEexitintrHrrrsF 3 ^ $  43333333333333J0J0J0J0J0VJ0J0J0ZJJJ'+04    *666   (    z CHSSTTVV__r