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Edit File: btm_utils.pyo
ó { fc @ s§ d Z d d l m Z d d l m Z m Z d d l m Z m Z e Z e Z e j Z e Z d Z d Z d Z d e f d „ ƒ YZ d d „ Z d „ Z d „ Z d S( s0 Utility functions used by the btm_matcher modulei ( t pytree( t grammart token( t pattern_symbolst python_symbolsiÿÿÿÿiþÿÿÿiýÿÿÿt MinNodec B sA e Z d Z d d d „ Z d „ Z d „ Z d „ Z d „ Z RS( s‰ This class serves as an intermediate representation of the pattern tree during the conversion to sets of leaf-to-root subpatternsc C sC | | _ | | _ g | _ t | _ d | _ g | _ g | _ d S( N( t typet namet childrent Falset leaft Nonet parentt alternativest group( t selfR R ( ( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyt __init__ s c C s t | j ƒ d t | j ƒ S( Nt ( t strR R ( R ( ( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyt __repr__ s c C sU | } g } xB| rP| j t k r | j j | ƒ t | j ƒ t | j ƒ k r| t | j ƒ g } g | _ | j } q q | j } d } Pn | j t k r| j j | ƒ t | j ƒ t | j ƒ k ró t | j ƒ } g | _ | j } q q| j } d } Pn | j t j k r4| j r4| j | j ƒ n | j | j ƒ | j } q W| S( s° Internal method. Returns a characteristic path of the pattern tree. This method must be run for all leaves until the linear subpatterns are merged into a singleN( R t TYPE_ALTERNATIVESR t appendt lenR t tupleR R t TYPE_GROUPR t get_characteristic_subpatternt token_labelst NAMER ( R t nodet subp( ( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyt leaf_to_root! s8 c C s1 x* | j ƒ D] } | j ƒ } | r | Sq Wd S( s‹ Drives the leaf_to_root method. The reason that leaf_to_root must be run multiple times is because we need to reject 'group' matches; for example the alternative form (a | b c) creates a group [b c] that needs to be matched. Since matching multiple linear patterns overcomes the automaton's capabilities, leaf_to_root merges each group into a single choice based on 'characteristic'ity, i.e. (a|b c) -> (a|b) if b more characteristic than c Returns: The most 'characteristic'(as defined by get_characteristic_subpattern) path for the compiled pattern tree. N( t leavesR ( R t lR ( ( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyt get_linear_subpatternK s c c sE x- | j D]" } x | j ƒ D] } | Vq Wq W| j sA | Vn d S( s- Generator that returns the leaves of the treeN( R R ( R t childt x( ( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyR ` s N( t __name__t __module__t __doc__R R R R R! R ( ( ( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyR s * c C s d } | j t j k r( | j d } n | j t j k rØ t | j ƒ d k rh t | j d | ƒ } qüt d t ƒ } x‚| j D]P } | j j | ƒ d r£ q n t | | ƒ } | d k r | j j | ƒ q q Wn$| j t j k rxt | j ƒ d k r_t d t ƒ } x9 | j D]. } t | | ƒ } | r| j j | ƒ qqW| j sud } quqüt | j d | ƒ } n„| j t j k rüt | j d t j ƒ rÍ| j d j d k rÍt | j d | ƒ St | j d t j ƒ rü| j d j d k s=t | j ƒ d k rAt | j d d ƒ rA| j d j d k rAd St } d } d } t } d } t } x• | j D]Š } | j t j k r–t } | } n< | j t j k r·t } | } n | j t j k rÒ| } n t | d ƒ ro| j d k rot } qoqoW| rA| j d } t | d ƒ rN| j d k rN| j d } qNn | j d } | j t j k rÏ| j d k rt d t ƒ } qTt t | j ƒ r±t d t t | j ƒ ƒ } qTt d t t | j ƒ ƒ } n… | j t j k r0| j j d ƒ } | t k rt d t | ƒ } qTt d t j d | ƒ } n$ | j t j k rTt | | ƒ } n | r›| j d j d k ryd } q›| j d j d k r’q›t ‚ n | rü| d k rüxI | j d d !D]4 } t | | ƒ } | d k r¾| j j | ƒ q¾q¾Wqün | r| | _! n | S( sÏ Internal function. Reduces a compiled pattern tree to an intermediate representation suitable for feeding the automaton. This also trims off any optional pattern elements(like [a], a*). i i R i t (t [t valuet =i t anyt 'R t *t +iÿÿÿÿN(" R R t symst MatcherR t AlternativesR t reduce_treeR R t indexR t AlternativeR t Unitt isinstanceR t LeafR) t hasattrt TrueR t Detailst RepeaterR R t TYPE_ANYt getattrt pysymst STRINGt stript tokenst NotImplementedErrorR ( R R t new_nodeR" t reducedR t details_nodet alternatives_nodet has_repeatert repeater_nodet has_variable_namet name_leafR ( ( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyR2 h s¦ c s, t | t ƒ s | St | ƒ d k r- | d Sg } g } d d d d d g ‰ g } d ‰ x’ | D]Š } t t | d „ ƒ ƒ ra t t | ‡ f d † ƒ ƒ r | j | ƒ që t t | ‡ f d † ƒ ƒ rÛ | j | ƒ që | j | ƒ qa qa W| rþ | } n | r | } n | r | } n t | d t ƒS( s„ Picks the most characteristic from a list of linear patterns Current order used is: names > common_names > common_chars i i t int fort ift notR s []().,:c S s t | ƒ t k S( N( R R ( R# ( ( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyt <lambda>ÿ t c s t | t ƒ o | ˆ k S( N( R6 R ( R# ( t common_chars( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyRO RP c s t | t ƒ o | ˆ k S( N( R6 R ( R# ( t common_names( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyRO RP t key( R6 t listR R+ t rec_testR t max( t subpatternst subpatterns_with_namest subpatterns_with_common_namest subpatterns_with_common_charst subpattern( ( RQ RR s) /usr/lib64/python2.7/lib2to3/btm_utils.pyR î s2 c c sW xP | D]H } t | t t f ƒ rD x* t | | ƒ D] } | Vq2 Wq | | ƒ Vq Wd S( sP Tests test_func on all items of sequence and items of included sub-iterablesN( R6 RT R RU ( t sequencet test_funcR# t y( ( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyRU s N( R& RP R t pgen2R R t pygramR R R/ R> t opmapRA R R< R R t objectR R R2 R RU ( ( ( s) /usr/lib64/python2.7/lib2to3/btm_utils.pyt <module> s X † %
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