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YZ i e j d 6e j d 6e j d 6d d 6Z d Z d Z d Z d S( s Pattern compiler.
The grammer is taken from PatternGrammar.txt.
The compiler compiles a pattern to a pytree.*Pattern instance.
s# Guido van Rossum <guido@python.org>iNi ( t drivert literalst tokent tokenizet parset grammar( t pytree( t pygrams PatternGrammar.txtt PatternSyntaxErrorc B s e Z RS( ( t __name__t
__module__( ( ( s% /usr/lib/python2.7/lib2to3/patcomp.pyR s c c sw t t j t j t j f } t j t j | j } x7 | D]/ } | \ } } } } } | | k r@ | Vq@ q@ Wd S( s6 Tokenizes a string suppressing significant whitespace.N( t setR t NEWLINEt INDENTt DEDENTR t generate_tokenst StringIOt readline( t inputt skipt tokenst quintuplet typet valuet startt endt line_text( ( s% /usr/lib/python2.7/lib2to3/patcomp.pyt tokenize_wrapper! s
t PatternCompilerc B sA e Z e d Z e e d Z d Z d d Z d Z RS( c C s^ t j | | _ t j | j | _ t j | _ t j | _ t j
| j d t | _ d S( s^ Initializer.
Takes an optional alternative filename for the pattern grammar.
t convertN( R t load_grammarR R t Symbolst symst python_grammart pygrammart python_symbolst pysymst Drivert pattern_convert( t selft grammar_file( ( s% /usr/lib/python2.7/lib2to3/patcomp.pyt __init__- s
c C s} t | } y | j j | d | } Wn( t j k
rR } t t | n X| rl | j | | f S| j | Sd S( s= Compiles a pattern string to a nested pytree.*Pattern object.t debugN( R R t parse_tokensR t
ParseErrorR t strt compile_node( R' R R* t with_treeR t roott e( ( s% /usr/lib/python2.7/lib2to3/patcomp.pyt compile_pattern8 s c C s | j | j j k r% | j d } n | j | j j k r g | j d d d D] } | j | ^ qQ } t | d k r | d St j g | D] } | g ^ q d d d d } | j S| j | j j
k r=g | j D] } | j | ^ q } t | d k r| d St j | g d d d d } | j S| j | j j k r| j | j d } t j
| } | j S| j | j j k st d } | j } t | d k r| d j t j k r| d j } | d } n d }
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d | } qn | d k r| | _ n | j S( sX Compiles a node, recursively.
This is one big switch on the node type.
i Ni i t mint maxi ii ( i i ( R R t Matchert childrent AlternativesR. t lenR t WildcardPatternt optimizet Alternativet NegatedUnitt
compile_basict NegatedPatternt Unitt AssertionErrort NoneR t EQUALR t Repeatert STARt HUGEt PLUSt LBRACEt RBRACEt get_intt Falset name( R' t nodet cht altst at pt unitst patternRK t nodest repeatR6 t childR3 R4 ( ( s% /usr/lib/python2.7/lib2to3/patcomp.pyR. D sh 21
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t | S| d k r d } nF | j d s-t | j | d } | d k r-t d | q-n | d rW| j | d j d g } n d } t j | | Sns | j d k r| j | d S| j d k r| d k st | j | d } t j | g g d
d d d St st | d S( Ni i s Invalid token: %rs Can't have details for tokent anyt _s Invalid symbol: %rt (t [R3 R4 ( R8 R@ R R t STRINGt unicodeR t
evalStringR R t LeafPatternt _type_of_literalt NAMEt isuppert TOKEN_MAPR RA t
startswitht getattrR$ R. R6 t NodePatternR9 RJ ( R' RS RT RL R R t contentt
subpattern( ( s% /usr/lib/python2.7/lib2to3/patcomp.pyR= s<
c C s% | j t j k s t t | j S( N( R R t NUMBERR@ t intR ( R' RL ( ( s% /usr/lib/python2.7/lib2to3/patcomp.pyRI s N(
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G #R_ RZ Rg t TOKENc C s9 | d j r t j S| t j k r1 t j | Sd Sd S( Ni ( t isalphaR R_ R t opmapRA ( R ( ( s% /usr/lib/python2.7/lib2to3/patcomp.pyR^ s
c C sW | \ } } } } | s' | | j k r= t j | | d | St j | | d | Sd S( s9 Converts raw node information to a Node or Leaf instance.t contextN( t
number2symbolR t Nodet Leaf( R t
raw_node_infoR R Rm R6 ( ( s% /usr/lib/python2.7/lib2to3/patcomp.pyR& s c C s t j | S( N( R R2 ( RR ( ( s% /usr/lib/python2.7/lib2to3/patcomp.pyR2 s ( t __doc__t
__author__t osR t pgen2R R R R R R t R R t patht joint dirnamet __file__Ri t ExceptionR R t objectR R_ RZ Rg RA Ra R^ R& R2 ( ( ( s% /usr/lib/python2.7/lib2to3/patcomp.pyt <module> s$ .