Your IP : 3.138.195.54
3
\�&�@s|dZddlmZddlmZmZddlmZmZeZ eZ
ejZeZ
dZdZdZGdd�de�Zdd
d�Zdd
�Zdd�Zd S)z0Utility functions used by the btm_matcher module�)�pytree)�grammar�token)�pattern_symbols�python_symbols��c@s:eZdZdZd
dd�Zdd�Zdd�Zd d
�Zdd�ZdS)�MinNodez�This class serves as an intermediate representation of the
pattern tree during the conversion to sets of leaf-to-root
subpatternsNcCs.||_||_g|_d|_d|_g|_g|_dS)NF)�type�name�children�leaf�parent�alternatives�group)�selfr
r�r�)/usr/lib64/python3.6/lib2to3/btm_utils.py�__init__szMinNode.__init__cCst|j�dt|j�S)N� )�strr
r)rrrr�__repr__szMinNode.__repr__cCs�|}g}x�|r�|jtkr`|jj|�t|j�t|j�krTt|j�g}g|_|j}q
n|j}d}P|jtkr�|j j|�t|j �t|j�kr�t
|j �}g|_ |j}q
n|j}d}P|jtjkr�|j
r�|j|j
�n|j|j�|j}q
W|S)z�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
�TYPE_ALTERNATIVESr�append�lenr�tupler�
TYPE_GROUPr�get_characteristic_subpattern�token_labels�NAMEr)r�node�subprrr�leaf_to_root!s8
zMinNode.leaf_to_rootcCs&x |j�D]}|j�}|r
|Sq
WdS)a�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)�leavesr")r�lr!rrr�get_linear_subpatternKszMinNode.get_linear_subpatternccs.x|jD]}|j�EdHqW|js*|VdS)z-Generator that returns the leaves of the treeN)rr#)r�childrrrr#`szMinNode.leaves)NN) �__name__�
__module__�__qualname__�__doc__rrr"r%r#rrrrr s
*r Nc
Cs�d}|jtjkr|jd}|jtjkr�t|j�dkrFt|jd|�}nJttd�}x>|jD]4}|jj |�drnqXt||�}|dk rX|jj
|�qXW�n|jtjk�rt|j�dkr�ttd�}x(|jD]}t||�}|r�|jj
|�q�W|js�d}nt|jd|�}�n�|jtj
k�r�t|jdtj��rH|jdjdk�rHt|jd|�St|jdtj��rn|jdjdk�s�t|j�dk�r�t|jdd��r�|jdjdk�r�dSd }d}d}d
}d} d
}
xn|jD]d}|jtjk�r�d
}|}n*|jtjk�r�d }|} n|jtjk�r|}t|d��r�|jdk�r�d }
�q�W|
�rb|jd}t|d��rl|jdk�rl|jd}n
|jd}|jtjk�r�|jd
k�r�ttd�}n4tt|j��r�ttt|j�d�}nttt|j�d�}n\|jtjk�r|jjd�}|tk�r�tt|d�}nttj|d�}n|jtjk�r$t||�}|�rZ| jdjdk�rBd}n| jdjdk�rVnt�|�r�|dk �r�x8|jdd�D]&}t||�}|dk �rz|jj
|��qzW|�r�||_|S)z�
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*).
N�r)r
r�(�[�valueTF�=r�any�')r
r�*�+���)r
�symsZMatcherrZAlternativesr�reduce_treer r�indexrZAlternativerZUnit�
isinstancerZLeafr.�hasattrZDetailsZRepeaterrr�TYPE_ANY�getattr�pysyms�STRING�strip�tokens�NotImplementedErrorr)
r rZnew_noder&Zreducedr
Zdetails_nodeZalternatives_nodeZhas_repeaterZ
repeater_nodeZhas_variable_nameZ name_leafrrrrr6gs�
r6cs�t|t�s|St|�dkr"|dSg}g}dddddg�g}d�xl|D]d}tt|d d
���rFtt|�fdd
���r~|j|�qFtt|�fdd
���r�|j|�qF|j|�qFW|r�|}n|r�|}n|r�|}t|td
�S)z�Picks the most characteristic from a list of linear patterns
Current order used is:
names > common_names > common_chars
rr+�in�for�if�not�Nonez[]().,:cSst|�tkS)N)r
r)�xrrr�<lambda>�sz/get_characteristic_subpattern.<locals>.<lambda>cst|t�o|�kS)N)r8r)rF)�common_charsrrrGscst|t�o|�kS)N)r8r)rF)�common_namesrrrGs)�key)r8�listrr0�rec_testr�max)ZsubpatternsZsubpatterns_with_namesZsubpatterns_with_common_namesZsubpatterns_with_common_chars�
subpatternr)rHrIrr�s2
rccs<x6|D].}t|ttf�r*t||�EdHq||�VqWdS)zPTests test_func on all items of sequence and items of included
sub-iterablesN)r8rKrrL)ZsequenceZ test_funcrFrrrrLs
rLr4������)N)r*�rZpgen2rrZpygramrrr5r<Zopmapr?rr:rr�objectr r6rrLrrrr�<module>sW
%
?>