ó è¾bc@sdZdZddgZddlZddlZddlZddlZddlZddlZddl m Z m Z m Z m Z mZdefd„ƒYZd „Zd deedd „Zd „Zd „Zd„Zedkrejeeƒ ƒƒndS(sZParser driver. This provides a high-level interface to parse a file into a syntax tree. s#Guido van Rossum tDrivert load_grammariÿÿÿÿNi(tgrammartparsettokenttokenizetpgencBsVeZddd„Zed„Zed„Zed„Zded„Zed„Z RS(cCs:||_|dkr$tjƒ}n||_||_dS(N(RtNonetloggingt getLoggertloggertconvert(tselfRR R ((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pyt__init__ s    cCs=tj|j|jƒ}|jƒd}d}d }}}} } d} xé|D]Ã} | \}}}} } |||fkr ||f|ks¨t||f|fƒ‚|\} }|| krá| d| |7} | }d}n||kr | | ||!7} |}q n|tjtj fkr`| |7} | \}}|j dƒrQ|d7}d}qQqQn|t j krtj |}n|r¨|jjdt j||| ƒn|j||| |fƒrà|rÜ|jjdƒnPnd} | \}}|j dƒrQ|d7}d}qQqQWtjd||| |fƒ‚|jS( s4Parse a series of tokens and return the syntax tree.iius s%s %r (prefix=%r)sStop.tsincomplete inputN(RtParserRR tsetupRtAssertionErrorRtCOMMENTtNLtendswithRtOPtopmapR tdebugttok_nametaddtokent ParseErrortrootnode(R ttokensRtptlinenotcolumnttypetvaluetstarttendt line_texttprefixt quintuplets_linenots_column((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pyt parse_tokens'sT  *              cCs"tj|jƒ}|j||ƒS(s*Parse a stream and return the syntax tree.(Rtgenerate_tokenstreadlineR)(R tstreamRR((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pytparse_stream_rawWscCs|j||ƒS(s*Parse a stream and return the syntax tree.(R-(R R,R((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pyt parse_stream\scCs;tj|d|ƒ}z|j||ƒSWd|jƒXdS(s(Parse a file and return the syntax tree.trN(tcodecstopenR.tclose(R tfilenametencodingRR,((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pyt parse_file`scCs+tjtj|ƒjƒ}|j||ƒS(s*Parse a string and return the syntax tree.(RR*tStringIOR+R)(R ttextRR((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pyt parse_stringhsN( t__name__t __module__RR tFalseR)R-R.R5R8(((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pyRs  0  cCsRtjj|ƒ\}}|dkr-d}n||djtttjƒƒdS(Ns.txtRt.s.pickle(tostpathtsplitexttjointmaptstrtsyst version_info(tgttheadttail((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pyt_generate_pickle_namens  s Grammar.txtcCsÞ|dkrtjƒ}n|dkr3t|ƒn|}|sOt||ƒ rÁ|jd|ƒtj|ƒ}trÚ|jd|ƒy|j |ƒWq¾t k rº}|jd|ƒq¾XqÚnt j ƒ}|j |ƒ|S(s'Load the grammar (maybe from a pickle).s!Generating grammar tables from %ssWriting grammar tables to %ssWriting failed: %sN(RRR RHt_newertinfoRtgenerate_grammarR;tdumptIOErrorRtGrammartload(REtgptsavetforceR tgte((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pyRus   cCsNtjj|ƒstStjj|ƒs,tStjj|ƒtjj|ƒkS(s0Inquire whether file a was written since file b.(R=R>texistsR;tTruetgetmtime(tatb((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pyRIs cCsctjj|ƒrt|ƒSttjj|ƒƒ}tj||ƒ}tj ƒ}|j |ƒ|S(sÙNormally, 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>tisfileRRHtbasenametpkgutiltget_dataRRNtloads(tpackagetgrammar_sourcet pickled_nametdataRS((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pytload_packaged_grammar–s    cGsc|stjd}ntjdtjdtjddƒx$|D]}t|dtdtƒq?WtS(sMain program, when run as a script: produce grammar pickle files. Calls load_grammar for each argument, a path to a grammar text file. itlevelR,tformats %(message)sRQRR(RCtargvRt basicConfigtINFOtstdoutRRV(targsRE((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pytmainªs t__main__(t__doc__t __author__t__all__R0R=RR\R6RCRRRRRRtobjectRRHRRVR;RRIRcRkR9texittint(((s*/usr/lib/python2.7/lib2to3/pgen2/driver.pyt s$       (P