ó v®¸Qc@sdZdZddlZddlZddlmZmZmZmZm Z m Z ddl m Z ddl m Z ejjejjeƒdƒZd efd „ƒYZd „Zd efd „ƒYZiejd6ejd6ejd6dd6Zd„Zd„Zd„ZdS(sPattern compiler. The grammer is taken from PatternGrammar.txt. The compiler compiles a pattern to a pytree.*Pattern instance. s#Guido van Rossum iÿÿÿÿNi(tdrivertliteralsttokenttokenizetparsetgrammar(tpytree(tpygramsPatternGrammar.txttPatternSyntaxErrorcBseZRS((t__name__t __module__(((s%/sys/lib/python2.7/lib2to3/patcomp.pyRsc cswttjtjtjfƒ}tjtj|ƒjƒ}x7|D]/}|\}}}}}||kr@|Vq@q@WdS(s6Tokenizes a string suppressing significant whitespace.N( tsetRtNEWLINEtINDENTtDEDENTRtgenerate_tokenstStringIOtreadline( tinputtskipttokenst quintuplettypetvaluetstarttendt line_text((s%/sys/lib/python2.7/lib2to3/patcomp.pyttokenize_wrapper!s   tPatternCompilercBsAeZed„Zeed„Zd„Zdd„Zd„Z RS(cCs^tj|ƒ|_tj|jƒ|_tj|_tj|_ tj |jdt ƒ|_dS(s^Initializer. Takes an optional alternative filename for the pattern grammar. tconvertN( Rt load_grammarRRtSymbolstsymstpython_grammart pygrammartpython_symbolstpysymstDrivertpattern_convert(tselft grammar_file((s%/sys/lib/python2.7/lib2to3/patcomp.pyt__init__-s   cCs}t|ƒ}y|jj|d|ƒ}Wn(tjk rR}tt|ƒƒ‚nX|rl|j|ƒ|fS|j|ƒSdS(s=Compiles a pattern string to a nested pytree.*Pattern object.tdebugN(RRt parse_tokensRt ParseErrorRtstrt compile_node(R'RR*t with_treeRtrootte((s%/sys/lib/python2.7/lib2to3/patcomp.pytcompile_pattern8s c CsÊ|j|jjkr%|jd}n|j|jjkrÁg|jddd…D]}|j|ƒ^qQ}t|ƒdkr†|dStjg|D]}|g^q“ddddƒ}|j ƒS|j|jj kr=g|jD]}|j|ƒ^qà}t|ƒdkr|dStj|gddddƒ}|j ƒS|j|jj kr|j |jdƒ}tj |ƒ}|j ƒS|j|jjksœt‚d}|j} t| ƒdkrí| djtjkrí| dj}| d} nd} t| ƒdkr5| dj|jjkr5| d} | d } n|j | | ƒ}| dk r¨| j|jjksnt‚| j} | d} | jtjkr¥d} tj}n¸| jtjkrÉd} tj}n”| jtjkrQ| djtjks÷t‚t| ƒd kst‚|j| dƒ} }t| ƒd kr]|j| dƒ}q]n ts]t‚| dksu|dkr¨|j ƒ}tj|ggd| d|ƒ}q¨n|dk rÀ||_n|j ƒS( sXCompiles a node, recursively. This is one big switch on the node type. iNiitmintmaxiiÿÿÿÿi(ii(RR tMatchertchildrent AlternativesR.tlenRtWildcardPatterntoptimizet Alternativet NegatedUnitt compile_basictNegatedPatterntUnittAssertionErrortNoneRtEQUALRtRepeatertSTARtHUGEtPLUStLBRACEtRBRACEtget_inttFalsetname(R'tnodetchtaltstatptunitstpatternRKtnodestrepeatR6tchildR3R4((s%/sys/lib/python2.7/lib2to3/patcomp.pyR.Dsh21 %   (  +         '  cCsùt|ƒdkst‚|d}|jtjkrbttj|jƒƒ}t j t |ƒ|ƒS|jtj krp|j}|j ƒrÒ|tkr¨td|ƒ‚n|drÁtdƒ‚nt j t|ƒS|dkrçd}nF|jdƒs-t|j|dƒ}|dkr-td|ƒ‚q-n|drW|j|djdƒg}nd}t j||ƒSns|jdkr|j|dƒS|jd krã|dks±t‚|j|dƒ}t j|ggd dd dƒStsõt|ƒ‚dS( NiisInvalid token: %rsCan't have details for tokentanyt_sInvalid symbol: %rt(t[R3R4(R8R@RRtSTRINGtunicodeRt evalStringRRt LeafPatternt_type_of_literaltNAMEtisuppert TOKEN_MAPRRAt startswithtgetattrR$R.R6t NodePatternR9RJ(R'RSRTRLRRtcontentt subpattern((s%/sys/lib/python2.7/lib2to3/patcomp.pyR=‹s<          cCs%|jtjkst‚t|jƒS(N(RRtNUMBERR@tintR(R'RL((s%/sys/lib/python2.7/lib2to3/patcomp.pyRI®sN( R R t_PATTERN_GRAMMAR_FILER)RJR2R.RAR=RI(((s%/sys/lib/python2.7/lib2to3/patcomp.pyR+s   G #R_RZRgtTOKENcCs9|djƒrtjS|tjkr1tj|SdSdS(Ni(tisalphaRR_RtopmapRA(R((s%/sys/lib/python2.7/lib2to3/patcomp.pyR^ºs  cCsW|\}}}}|s'||jkr=tj||d|ƒStj||d|ƒSdS(s9Converts raw node information to a Node or Leaf instance.tcontextN(t number2symbolRtNodetLeaf(Rt raw_node_infoRRRmR6((s%/sys/lib/python2.7/lib2to3/patcomp.pyR&ÃscCstƒj|ƒS(N(RR2(RR((s%/sys/lib/python2.7/lib2to3/patcomp.pyR2Ìs( t__doc__t __author__tosRtpgen2RRRRRRtRRtpathtjointdirnamet__file__Rit ExceptionRRtobjectRR_RZRgRARaR^R&R2(((s%/sys/lib/python2.7/lib2to3/patcomp.pyt s$  .  ‰