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� �� f' c @ 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 Gd d � d e � Z d d d � Z d d � Z d d � Z d S( u0 Utility functions used by the btm_matcher modulei ( u pytree( u grammaru token( u pattern_symbolsu python_symbolsi i c B s\ | Ee Z d Z d Z d d d d � Z d d � Z d d � Z d d � Z d d � Z d S( u MinNodeu� This class serves as an intermediate representation of the pattern tree during the conversion to sets of leaf-to-root subpatternsc C sC | | _ | | _ g | _ d | _ d | _ g | _ g | _ d S( NF( u typeu nameu childrenu Falseu leafu Noneu parentu alternativesu group( u selfu typeu name( ( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu __init__ s u MinNode.__init__c C s t | j � d t | j � S( Nu ( u stru typeu name( u self( ( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu __repr__ s u MinNode.__repr__c C sU | } g } xB| rP| j t k r� | j j | � t | j � t | j � k r| t | j � g } g | _ | j } q q� | j } d } Pn | j t k r| j j | � t | j � t | j � k r� t | j � } g | _ | j } q q| j } d } Pn | j t j k r4| j r4| j | j � n | j | j � | j } q W| S( u� 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( u typeu TYPE_ALTERNATIVESu alternativesu appendu lenu childrenu tupleu parentu Noneu TYPE_GROUPu groupu get_characteristic_subpatternu token_labelsu NAMEu name( u selfu nodeu subp( ( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu leaf_to_root! s8 u MinNode.leaf_to_rootc C s1 x* | j � D] } | j � } | r | Sq Wd S( u� 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( u leavesu leaf_to_root( u selfu lu subp( ( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu get_linear_subpatternK s u MinNode.get_linear_subpatternc c sE x- | j D]" } x | j � D] } | Vq Wq W| j sA | Vn d S( u- Generator that returns the leaves of the treeN( u childrenu leaves( u selfu childu x( ( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu leaves` s u MinNode.leavesN( u __name__u __module__u __qualname__u __doc__u Noneu __init__u __repr__u leaf_to_rootu get_linear_subpatternu leaves( u __locals__( ( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu MinNode s * u MinNodec C s d } | j t j k r( | j d } n | j t j k r� t | j � d k rh t | j d | � } q�t d t � } x�| j D]P } | j j | � d r� q� n t | | � } | d k r� | j j | � q� q� Wn'| j t j k rxt | j � d k r_t d t � } x9 | j D]. } t | | � } | r| j j | � qqW| j sud } quq�t | j d | � } n�| j t j k r�t | j d t j � r�| j d j d k r�t | j d | � St | j d t j � r�| j d j d k s=t | j � d k rAt | j d d � rA| j d j d k rAd Sd } d } d } d } d } d } x� | j D]� } | j t j k r�d } | } n< | j t j k r�d } | } n | j t j k r�| } n t | d � ro| j d k rod } qoqoW| rA| j d } t | d � rN| j d k rN| j d } qNn | j d } | j t j k r�| j d k r�t d t � } qTt t | j � r�t d t t | j � � } qTt d t t | j � � } n� | j t j k r0| j j d � } | t k rt d t | � } qTt d t j d | � } n$ | j t j k rTt | | � } n | r�| j d j d k ryd } q�| j d j d k r�q�t � n | r�| d k r�xL | j d d � D]4 } t | | � } | d k r�| j j | � q�q�Wq�n | r| | _! n | S( u� 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 u typei u (u [u valueu =i u anyu 'u nameu *u +NTFi����(" u Noneu typeu symsu Matcheru childrenu Alternativesu lenu reduce_treeu MinNodeu TYPE_ALTERNATIVESu indexu appendu Alternativeu TYPE_GROUPu Unitu isinstanceu pytreeu Leafu valueu hasattru Trueu Falseu Detailsu Repeateru token_labelsu NAMEu TYPE_ANYu getattru pysymsu STRINGu stripu tokensu NotImplementedErroru parent( u nodeu parentu new_nodeu childu reducedu leafu details_nodeu alternatives_nodeu has_repeateru repeater_nodeu has_variable_nameu name_leafu name( ( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu reduce_treeh s� u reduce_treec s5 t | t � s | St | � d k r- | d Sg } g } d d d d d g � g } d � x� | D]� } t t | d d � � � ra t t | � f d d � � � r� | j | � q� t t | � f d d � � � r� | j | � q� | j | � qa qa W| r| } n | r| } n | r%| } n t | d t �S( u� Picks the most characteristic from a list of linear patterns Current order used is: names > common_names > common_chars i i u inu foru ifu notu Noneu []().,:c S s t | � t k S( N( u typeu str( u x( ( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu <lambda>� s u/ get_characteristic_subpattern.<locals>.<lambda>c s t | t � o | � k S( N( u isinstanceu str( u x( u common_chars( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu <lambda> s c s t | t � o | � k S( N( u isinstanceu str( u x( u common_names( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu <lambda> s u key( u isinstanceu listu lenu anyu rec_testu appendu max( u subpatternsu subpatterns_with_namesu subpatterns_with_common_namesu subpatterns_with_common_charsu subpattern( ( u common_charsu common_namesu6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu get_characteristic_subpattern� s2 u get_characteristic_subpatternc c sW xP | D]H } t | t t f � rD x* t | | � D] } | Vq2 Wq | | � Vq Wd S( uP Tests test_func on all items of sequence and items of included sub-iterablesN( u isinstanceu listu tupleu rec_test( u sequenceu test_funcu xu y( ( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu rec_test s u rec_testNi����i����i����( u __doc__u u pytreeu pgen2u grammaru tokenu pygramu pattern_symbolsu python_symbolsu symsu pysymsu opmapu tokensu token_labelsu TYPE_ANYu TYPE_ALTERNATIVESu TYPE_GROUPu objectu MinNodeu Noneu reduce_treeu get_characteristic_subpatternu rec_test( ( ( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu <module> s X� %
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