o
    PFfE                     @   s  d dl Z d dlZd dlZd dlZd dlZd dlZd dlmZ d dl mZm	Z	m
Z
 d dlmZmZmZmZmZmZmZmZmZmZmZ d dlmZ erzddlmZ G dd	 d	e
Zeeef Zejd  d
krweeeeeef eeef ef Z nej Z dd Z!G dd de"ddZ#ejdkre j$Z%nG dd dZ%dOddZ&dOddZ'ejdkrdd Z(ndd Z(dd Z)dd Z*dPd d!Z+d"d# ee j,D Z-dPd$d%Z.d&d# ee j,D Z/d'd# ee j,D h d(B Z0d)d* Z1d+d, Z2d-d. Z3d/d0 Z4d1d2 Z5d3d4 Z6d5d6 Z7e8 Z9d7d8 Z:dPd9d:Z;d;d< Z<G d=d> d>e8Z=ejd  d
kr'd?d@ Z>ndAd@ Z>dBdC Z?dDdE Z@ejdd
 dFkrRd dGlAmBZB eBddHdIdJ ZCdKdL ZDdS dMdJ ZCdNdL ZDdS )Q    N)ABCMeta)ModuleexprAST)CallableDictIterableIteratorListOptionalTupleUnioncastAnyTYPE_CHECKING)	iteritems   )NodeNGc                   @   s   e Zd ZdZdZdZdS )EnhancedASTNr   )__name__
__module____qualname__first_token
last_tokenlineno r   r   M/var/www/secure340b-portal/env/lib/python3.10/site-packages/asttokens/util.pyr   !   s    r      c                 C   s   dt j|  t|df S )zRReturns a human-friendly representation of a token with the given type and string.z%s:%su)tokentok_namereprlstrip)tok_typestringr   r   r   
token_repr/   s   r%   c                   @   s   e Zd ZdZdd ZdS )Tokena  
  TokenInfo is an 8-tuple containing the same 5 fields as the tokens produced by the tokenize
  module, and 3 additional ones useful for this module:

  - [0] .type     Token type (see token.py)
  - [1] .string   Token (a string)
  - [2] .start    Starting (row, column) indices of the token (a 2-tuple of ints)
  - [3] .end      Ending (row, column) indices of the token (a 2-tuple of ints)
  - [4] .line     Original line (string)
  - [5] .index    Index of the token in the list of tokens that it belongs to.
  - [6] .startpos Starting character offset into the input text.
  - [7] .endpos   Ending character offset into the input text.
  c                 C   s   t | j| jS N)r%   typer$   selfr   r   r   __str__D   s   zToken.__str__N)r   r   r   __doc__r+   r   r   r   r   r&   6   s    r&   z0type string start end line index startpos endpos)      c                   @   s   e Zd Ze ZdS )AstConstantN)r   r   r   objectvaluer   r   r   r   r/   L   s    
r/   c                 C   s   | j |ko|du p| j|kS )zVReturns true if token is of the given type and, if a string is given, has that string.N)r(   r$   r   r#   tok_strr   r   r   match_tokenP   s   r4   c                 C   s>   t | ||stdt||t| | jd | jd d f dS )z
  Verifies that the given token is of the expected type. If tok_str is given, the token string
  is verified too. If the token doesn't match, raises an informative ValueError.
  z+Expected token %s, got %s on line %s col %sr   r   N)r4   
ValueErrorr%   strstartr2   r   r   r   expect_tokenV   s   r8   )r-      c                 C   s   | t jt jt jfv S zW
    These are considered non-coding tokens, as they don't affect the syntax tree.
    )r   NLCOMMENTENCODING
token_typer   r   r   is_non_coding_tokend   s   r@   c                 C   s
   | t jkS r:   )r   N_TOKENSr>   r   r   r   r@   k   s   
c                 C   s    t ttg tf t| jS )z;
  Generates standard library tokens for the given code.
  )tokenizegenerate_tokensr   r   r6   ioStringIOreadline)textr   r   r   rC   s   s    rC   c                 C   s   t | drtS tS )z
  Returns a function which yields all direct children of a AST node,
  skipping children that are singleton nodes.
  The function depends on whether ``node`` is from ``ast`` or from the ``astroid`` module.
  get_children)hasattriter_children_astroiditer_children_astnoder   r   r   iter_children_func~   s   rN   Fc                 C   s   |st | rg S |  S r'   )is_joined_strrH   )rM   include_joined_strr   r   r   rJ      s   rJ   c              	   C   s<   h | ]\}}t |trt|tjtjtjtjtjfr|qS r   )	
isinstancer(   
issubclassastexpr_contextboolopoperatorunaryopcmpop.0ncr   r   r   	<setcomp>   s    
r]   c                 c   sr    |s	t | r	d S t| tjr't| j| jD ]\}}|d ur!|V  |V  qd S t| D ]
}|jt	vr6|V  q,d S r'   )
rO   rQ   rS   r   zipkeysvaluesiter_child_nodes	__class__
SINGLETONS)rM   rP   keyr1   childr   r   r   rK      s   
rK   c                 C   *   h | ]\}}t |trt|tjr|qS r   )rQ   r(   rR   rS   stmtrY   r   r   r   r]      
    

c                 C   rf   r   )rQ   r(   rR   rS   r   rY   r   r   r   r]      rh   >   ConstDelAttrDelName
AssignAttr
AssignNamec                 C      | j jtv S )z+Returns whether node is an expression node.)rb   r   expr_class_namesrL   r   r   r   is_expr      rp   c                 C   rn   )z)Returns whether node is a statement node.)rb   r   stmt_class_namesrL   r   r   r   is_stmt   rq   rs   c                 C      | j jdkS )z&Returns whether node is a module node.r   rb   r   rL   r   r   r   	is_module   rq   rv   c                 C   rt   )zFReturns whether node is a JoinedStr node, used to represent f-strings.	JoinedStrru   rL   r   r   r   rO      s   rO   c                 C   rt   )z2Returns whether node is a starred expression node.Starredru   rL   r   r   r   
is_starred   rq   ry   c                 C   s0   | j jdv p| j jdkotttttj| jS )z?Returns whether node represents a slice, e.g. `1:2` in `x[1:2]`)SliceExtSlicer   )	rb   r   anymapis_slicer   rS   r   eltsrL   r   r   r   r~      s   r~   c                 C   sB   | j jdko t| tj o | j| j  u o| j  u od u S   S )Nrz   )rb   r   rQ   rS   r   loweruppersteprL   r   r   r   is_empty_astroid_slice   s    r   c                 C   s   |sdd }t | }t }d}| dtfg}|r^| \}}}	|	tu rQ||vs(J || |||\}
}||||f t|}||D ]}||||
tf qDn|||tt	t
 |	}|s|S )a5  
  Scans the tree under the node depth-first using an explicit stack. It avoids implicit recursion
  via the function call stack to avoid hitting 'maximum recursion depth exceeded' error.

  It calls ``previsit()`` and ``postvisit()`` as follows:

  * ``previsit(node, par_value)`` - should return ``(par_value, value)``
        ``par_value`` is as returned from ``previsit()`` of the parent.

  * ``postvisit(node, par_value, value)`` - should return ``value``
        ``par_value`` is as returned from ``previsit()`` of the parent, and ``value`` is as
        returned from ``previsit()`` of this node itself. The return ``value`` is ignored except
        the one for the root node, which is returned from the overall ``visit_tree()`` call.

  For the initial node, ``par_value`` is None. ``postvisit`` may be None.
  c                 S      d S r'   r   )rM   pvaluer1   r   r   r   <lambda>   s    zvisit_tree.<locals>.<lambda>N)rN   set	_PREVISITpopaddappendleninsertr   r   r&   )rM   previsit	postvisititer_childrendoneretstackcurrent	par_valuer1   r   
post_valueinsr[   r   r   r   
visit_tree   s(   
r   c                 c   sn    t | }t }| g}|r5| }||vsJ || |V  t|}|||D ]}||| q(|sdS dS )a1  
  Recursively yield all descendant nodes in the tree starting at ``node`` (including ``node``
  itself), using depth-first pre-order traversal (yieling parents before their children).

  This is similar to ``ast.walk()``, but with a different order, and it works for both ``ast`` and
  ``astroid`` trees. Also, as ``iter_children()``, it skips singleton nodes generated by ``ast``.

  By default, ``JoinedStr`` (f-string) nodes and their contents are skipped
  because they previously couldn't be handled. Set ``include_joined_str`` to True to include them.
  N)rN   r   r   r   r   r   )rM   rP   r   r   r   r   r   r\   r   r   r   walk  s   
r   c                 C   sX   d}g }t |D ]\}}}|| ||  || |}q|| |d  d|S )ah  
  Replaces multiple slices of text with new values. This is a convenience method for making code
  modifications of ranges e.g. as identified by ``ASTTokens.get_text_range(node)``. Replacements is
  an iterable of ``(start, end, new_text)`` tuples.

  For example, ``replace("this is a test", [(0, 4, "X"), (8, 9, "THE")])`` produces
  ``"X is THE test"``.
  r   N )sortedr   join)rG   replacementsppartsr7   endnew_textr   r   r   replace1  s   


r   c                   @   s    e Zd ZdZdd Zdd ZdS )NodeMethodsz[
  Helper to get `visit_{node_type}` methods given a node's class and cache the results.
  c                 C   s
   i | _ d S r'   )_cacher)   r   r   r   __init__I  s   
zNodeMethods.__init__c                 C   s:   | j |}|sd|j  }t|||j}|| j |< |S )z
    Using the lowercase name of the class as node_type, returns `obj.visit_{node_type}`,
    or `obj.visit_default` if the type-specific method is not found.
    visit_)r   getr   r   getattrvisit_default)r*   objclsmethodnamer   r   r   r   M  s   
zNodeMethods.getN)r   r   r   r,   r   r   r   r   r   r   r   E  s    r   c                 C   s   t | S r'   )iter)original_tokensr   r   r   patched_generate_tokens^  s   r   c                 c   s|    g }| D ],}|j tjtjtjfv r"|r|d j|jkr"|| qt|D ]}|V  q&g }|V  qt|D ]}|V  q6dS )a  
    Fixes tokens yielded by `tokenize.generate_tokens` to handle more non-ASCII characters in identifiers.
    Workaround for https://github.com/python/cpython/issues/68382.
    Should only be used when tokenizing a string that is known to be valid syntax,
    because it assumes that error tokens are not actually errors.
    Combines groups of consecutive NAME, NUMBER, and/or ERRORTOKEN tokens into a single NAME token.
    N)	r(   rB   NAME
ERRORTOKENNUMBERr   r7   r   combine_tokens)r   grouptokcombined_tokenr   r   r   r   b  s   	c                 C   sf   t dd | D rtdd | D dkr| S tjtjddd | D | d j| d	 j| d jd
gS )Nc                 s   s    | ]	}|j tjkV  qd S r'   )r(   rB   r   rZ   r   r   r   r   	<genexpr>}  s    z!combine_tokens.<locals>.<genexpr>c                 S   s   h | ]}|j qS r   )liner   r   r   r   r]   }  s    z!combine_tokens.<locals>.<setcomp>r   r   c                 s   s    | ]}|j V  qd S r'   )r$   )rZ   tr   r   r   r     s    r   r   )r(   r$   r7   r   r   )	r|   r   rB   	TokenInfor   r   r7   r   r   )r   r   r   r   r   {  s   (r   c                 C   s*   dd t | | D }|rt|d S | S )zq
  If the given AST node contains multiple statements, return the last one.
  Otherwise, just return the node.
  c                 S   s&   g | ]}t |st|jd v r|qS ))excepthandlerExceptHandler
match_case	MatchCase	TryExcept
TryFinally)rs   r(   r   )rZ   re   r   r   r   
<listcomp>  s    zlast_stmt.<locals>.<listcomp>r   )rN   	last_stmt)rM   child_stmtsr   r   r   r     s   
r   )r-      )	lru_cache)maxsizec                     sb   d t  } dd t | D }dd |D }tt|t|k}t fdd|D }|o0|S )a  
    The positions attached to nodes inside f-string FormattedValues have some bugs
    that were fixed in Python 3.9.7 in https://github.com/python/cpython/pull/27729.
    This checks for those bugs more concretely without relying on the Python version.
    Specifically this checks:
     - Values with a format spec or conversion
     - Repeated (i.e. identical-looking) expressions
     - f-strings implicitly concatenated over multiple lines.
     - Multiline, triple-quoted f-strings.
    z(
      f"a {b}{b} c {d!r} e {f:g} h {i:{j}} k {l:{m:n}}"
      f"a {b}{b} c {d!r} e {f:g} h {i:{j}} k {l:{m:n}}"
      f"{x + y + z} {x} {y} {z} {z} {z!a} {z:z}"
      f'''
      {s} {t}
      {u} {v}
      '''
    )c                 S   s   g | ]
}t |tjr|qS r   )rQ   rS   NamerZ   rM   r   r   r   r     s    z*fstring_positions_work.<locals>.<listcomp>c                 S   s   g | ]}|j |jfqS r   )r   
col_offsetr   r   r   r   r     s    c                 3   s"    | ]}t  ||jkV  qd S r'   )rS   get_source_segmentidr   sourcer   r   r     s
    
z)fstring_positions_work.<locals>.<genexpr>)rS   parser   r   r   all)tree
name_nodesname_positionspositions_are_uniquecorrect_source_segmentsr   r   r   fstring_positions_work  s   
	r   c                 C   s   t jdkrdS t| ddD ]6}t|tjsq|jD ])}t|dd t|tjrBt	 s8t|j
D ]}t|dd q/|jrBt|jdd qqdS )z
    Add a special attribute `_broken_positions` to nodes inside f-strings
    if the lineno/col_offset cannot be trusted.
    )r-      NT)rP   _broken_positions)sysversion_infor   rQ   rS   rw   r`   setattrFormattedValuer   r1   format_spec)r   	joinedstrpartre   r   r   r   annotate_fstring_nodes  s    

r   c                   C   s   dS )NFr   r   r   r   r   r        c                 C   r   r'   r   )_treer   r   r   r     r   r'   )F)ErS   collectionsrD   r   r   rB   abcr   r   r   r   typingr   r   r   r	   r
   r   r   r   r   r   r   sixr   astroid_compatr   r   AstNoder   intr6   r   r%   
namedtupler&   Constantr/   r4   r8   r@   rC   rN   rJ   __dict__rc   rK   rr   ro   rp   rs   rv   rO   ry   r~   r   r0   r   r   r   r   r   r   r   r   	functoolsr   r   r   r   r   r   r   <module>   sx   4$









+

