a
    ]9úa€  ã                   @   sD   d Z ddlmZmZmZ dd„ ZG dd„ deƒZG dd„ deƒZd	S )
a  Finding bad name and attribute accesses

`find_errors` function can be used to find possible bad name and
attribute accesses.  As an example::

  errors = find_errors(project, project.get_resource('mod.py'))
  for error in errors:
      print('%s: %s' % (error.lineno, error.error))

prints possible errors for ``mod.py`` file.

TODO:

* use task handles
* reporting names at most once
* attributes of extension modules that don't appear in
  extension_modules project config can be ignored
* not calling `PyScope.get_inner_scope_for_line()` if it is a
  bottleneck; needs profiling
* not reporting occurrences where rope cannot infer the object
* rope saves multiple objects for some of the names in its objectdb
  use all of them not to give false positives
* ... ;-)

é    )ÚastÚevaluateÚ	pyobjectsc                 C   s(   |   |¡}t|ƒ}t | ¡ |¡ |jS )zUFind possible bad name and attribute accesses

    It returns a list of `Error`.
    )Zget_pymoduleÚ_BadAccessFinderr   ÚwalkZget_astÚerrors)ZprojectÚresourceÚpymoduleÚfinder© r   ú6lib/python3.9/site-packages/rope/contrib/finderrors.pyÚfind_errors   s    
r   c                   @   s4   e Zd Zdd„ Zdd„ Zdd„ Zdd„ Zd	d
„ ZdS )r   c                 C   s   || _ | ¡ | _g | _d S ©N)r	   Z	get_scopeÚscoper   )Úselfr	   r   r   r   Ú__init__)   s    
z_BadAccessFinder.__init__c                 C   sh   t |jtjtjfƒrd S | j |j¡}| |j	¡}|d u rH|  
|d¡ n|  |||j¡rd|  
|d¡ d S )NzUnresolved variablezDefined later)Ú
isinstanceÚctxr   ÚStoreZParamr   Úget_inner_scope_for_lineÚlinenoÚlookupÚidÚ
_add_errorÚ_is_defined_after©r   Únoder   Úpynamer   r   r   Ú_Name.   s    z_BadAccessFinder._Namec                 C   sn   t |jtjƒs\| j |j¡}t ||j	¡}|d ur\| 
¡ t ¡ kr\|j| 
¡ vr\|  |d¡ t |j	| ¡ d S )NzUnresolved attribute)r   r   r   r   r   r   r   r   Z	eval_nodeÚvalueZ
get_objectr   Zget_unknownÚattrr   r   r   r   r   r   Ú
_Attribute8   s    z_BadAccessFinder._Attributec                 C   sF   t |tjƒr|j}n|j}|dkrBt|j|d | ƒ}| j |¡ d S )NÚNoneú )	r   r   Z	Attributer    r   ÚErrorr   r   Úappend)r   r   ÚmsgÚnameÚerrorr   r   r   r   A   s    z_BadAccessFinder._add_errorc                 C   sR   |  ¡ }|d urN|d d urN|d | jkrN||d   krF| ¡ krNn ndS d S )Né   r   T)Zget_definition_locationr	   Zget_end)r   r   r   r   Úlocationr   r   r   r   J   s    ÿþþ
z"_BadAccessFinder._is_defined_afterN)Ú__name__Ú
__module__Ú__qualname__r   r   r!   r   r   r   r   r   r   r   (   s
   
		r   c                   @   s   e Zd Zdd„ Zdd„ ZdS )r$   c                 C   s   || _ || _d S r   ©r   r(   )r   r   r(   r   r   r   r   U   s    zError.__init__c                 C   s   d| j | jf S )Nz%s: %sr.   )r   r   r   r   Ú__str__Y   s    zError.__str__N)r+   r,   r-   r   r/   r   r   r   r   r$   T   s   r$   N)	Ú__doc__Z	rope.baser   r   r   r   Úobjectr   r$   r   r   r   r   Ú<module>   s   ,