U
    g
                     @   s   d dl Z d dlZd dlZd dlZd dlmZmZ d dlmZ e	 dkZ
ejdd dkZejdd dkZejdd dkZejdd d	kZejdd d
kZejdd dkZerd dlZejZndd ZG dd dZe Zdd ZdS )    N)MappingSequence)_GenericAliasPyPy   )   	   )r   
   )r      )r      )r      )r      c                 C   s   | j di S )z,
        Get annotations for *cls*.
        __annotations__)__dict__get)cls r   0/tmp/pip-unpacked-wheel-4g8m5gbg/attr/_compat.py_get_annotations   s    r   c                   @   s.   e Zd ZdZdgZdd Zdd Zdd Zd	S )
_AnnotationExtractorz^
    Extract type annotations from a callable, returning None whenever there
    is none.
    sigc              	   C   s4   zt || _W n ttfk
r.   d | _Y nX d S )N)inspect	signaturer   
ValueError	TypeError)selfcallabler   r   r   __init__+   s    z_AnnotationExtractor.__init__c                 C   s>   | j s
dS t| j j }|r:|d jtjjk	r:|d jS dS )zU
        Return the type annotation of the first argument if it's not empty.
        Nr   )r   list
parametersvalues
annotationr   	Parameterempty)r   paramsr   r   r   get_first_param_type1   s    
z)_AnnotationExtractor.get_first_param_typec                 C   s"   | j r| j jtjjk	r| j jS dS )z;
        Return the return type if it's not empty.
        N)r   return_annotationr   	Signaturer#   )r   r   r   r   get_return_type>   s    z$_AnnotationExtractor.get_return_typeN)__name__
__module____qualname____doc__	__slots__r   r%   r(   r   r   r   r   r   #   s
   r   c                 C   s   | j tkr| jS dS )zDIf this is a generic class (A[str]), return the generic base for it.N)	__class__r   
__origin__)Zclr   r   r   get_generic_baseZ   s    
r0   )r   platformsys	threadingcollections.abcr   r   typingr   python_implementationZPYPYversion_infoZPY_3_9_PLUSZPY_3_10_PLUSZPY_3_11_PLUSZPY_3_12_PLUSZPY_3_13_PLUSZPY_3_14_PLUSZannotationlibZget_annotationsr   r   localZrepr_contextr0   r   r   r   r   <module>   s&   4