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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
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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
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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
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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
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__locals__( ( u6 /opt/alt/python33/lib64/python3.3/lib2to3/btm_utils.pyu MinNode s * u MinNodec
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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
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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
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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 %