a
    8Sic"                     @   s   d dl Z d dlmZmZ d dlmZmZ d dlmZ d dl	m
Z
 d dlmZmZmZmZmZ ddlmZmZmZ G d	d
 d
eZG dd deZG dd deZG dd deZe ZG dd deZdS )    N)ABCabstractmethod)_getattribute_Pickler)whichmodule)
ModuleType)AnyListOptionalTupleDict   )demangleget_mangle_prefix
is_mangledc                   @   s   e Zd ZdZdS )ObjNotFoundErrorzHRaised when an importer cannot find an object by searching for its name.N__name__
__module____qualname____doc__ r   r   R/var/www/html/django/DPS/env/lib/python3.9/site-packages/torch/package/importer.pyr      s   r   c                   @   s   e Zd ZdZdS )ObjMismatchErrorz]Raised when an importer found a different object with the same name as the user-provided one.Nr   r   r   r   r   r      s   r   c                   @   sh   e Zd ZU dZeeef ed< eeedddZ	de
ee eeef ddd	Ze
eedd
dZdS )Importerad  Represents an environment to import modules from.

    By default, you can figure out what module an object belongs by checking
    __module__ and importing the result using __import__ or importlib.import_module.

    torch.package introduces module importers other than the default one.
    Each PackageImporter introduces a new namespace. Potentially a single
    name (e.g. 'foo.bar') is present in multiple namespaces.

    It supports two main operations:
        import_module: module_name -> module object
        get_name: object -> (parent module name, name of obj within module)

    The guarantee is that following round-trip will succeed or throw an ObjNotFoundError/ObjMisMatchError.
        module_name, obj_name = env.get_name(obj)
        module = env.import_module(module_name)
        obj2 = getattr(module, obj_name)
        assert obj1 is obj2
    modulesmodule_namereturnc                 C   s   dS )zvImport `module_name` from this environment.

        The contract is the same as for importlib.import_module.
        Nr   selfr   r   r   r   import_module.   s    zImporter.import_moduleNobjnamer   c                    sV   du r`|r`t jt|du r`t|dd}|dur`z| }t|trJ| W n ty^   Y n0  du rtt|dd  du r|j 	| }t
|}z|}t| \}}	W n2 tttfy   t| d| d  dY n0 ||u r| fS  fdd}
|
|\}}}|
|\}}}d| d	| d
| d| d| d| d}t|dS )am  Given an object, return a name that can be used to retrieve the
        object from this environment.

        Args:
            obj: An object to get the the module-environment-relative name for.
            name: If set, use this name instead of looking up __name__ or __qualname__ on `obj`.
                This is only here to match how Pickler handles __reduce__ functions that return a string,
                don't use otherwise.
        Returns:
            A tuple (parent_module_name, attr_name) that can be used to retrieve `obj` from this environment.
            Use it like:
                mod = importer.import_module(parent_module_name)
                obj = getattr(mod, attr_name)

        Raises:
            ObjNotFoundError: we couldn't retrieve `obj by name.
            ObjMisMatchError: we found a different object with the same name as `obj`.
        N
__reduce__r   z was not found as .c                    sP    d usJ  |  }t|}|r,t|nd}|rBdt| nd}|||fS )Nzthe current Python environmentzthe importer for z'sys_importer')r   r   r   )r#   r   Zis_mangled_locationZimporter_namer$   r    r   r   get_obj_infol   s    
z'Importer.get_name.<locals>.get_obj_infoz

The object provided is from 'z', which is coming from z.
However, when we import 'z', it's coming from z@.
To fix this, make sure this 'PackageExporter's importer lists z before )r   dispatchgettypegetattr
isinstancestr	Exceptionr   r   r   r!   r   ImportErrorKeyErrorAttributeErrorr   r   )r    r#   r$   reducervZorig_module_namer   moduleobj2_r)   Zobj_module_nameZobj_locationZobj_importer_nameZobj2_module_nameZobj2_locationZobj2_importer_namemsgr   r(   r   get_name6   sT     

zImporter.get_namec              	   C   s   t |dd}|dur|S | j  D ]V\}}|dks&|dks&|du rHq&z t||d |u rf|W   S W q& tyz   Y q&0 q&dS )a  Find the module name an object belongs to.

        This should be considered internal for end-users, but developers of
        an importer can override it to customize the behavior.

        Taken from pickle.py, but modified to exclude the search into sys.modules
        r   N__main____mp_main__r   )r-   r   copyitemsr   r3   )r    r#   r$   r   r6   r   r   r   r      s"    zImporter.whichmodule)N)r   r   r   r   r   r/   r   __annotations__r   r!   r   r
   r   r:   r   r   r   r   r   r      s   
 Qr   c                   @   s0   e Zd ZdZedddZeeedddZdS )	_SysImporterz;An importer that implements the default behavior of Python.)r   c                 C   s
   t |S N)	importlibr!   r   r   r   r   r!      s    z_SysImporter.import_moduler"   c                 C   s
   t ||S rA   )_pickle_whichmodule)r    r#   r$   r   r   r   r      s    z_SysImporter.whichmoduleN)r   r   r   r   r/   r!   r   r   r   r   r   r   r@      s   r@   c                   @   sB   e Zd ZdZdd Zdd ZeedddZe	eed	d
dZ
dS )OrderedImporterzA compound importer that takes a list of importers and tries them one at a time.

    The first importer in the list that returns a result "wins".
    c                 G   s   t || _d S rA   )list
_importers)r    argsr   r   r   __init__   s    zOrderedImporter.__init__c                 C   s6   t |ddsdS t|dsdS t|ds,dS |jdu S )a  Returns true iff this module is an empty PackageNode in a torch.package.

        If you intern `a.b` but never use `a` in your code, then `a` will be an
        empty module with no source. This can break cases where we are trying to
        re-package an object after adding a real dependency on `a`, since
        OrderedImportere will resolve `a` to the dummy package and stop there.

        See: https://github.com/pytorch/pytorch/pull/71520#issuecomment-1029603769
        Z__torch_package__F__path____file__TN)r-   hasattrrJ   )r    r6   r   r   r   _is_torchpackage_dummy   s    


z&OrderedImporter._is_torchpackage_dummyr   c                 C   s   d }| j D ]h}t|ts&t| dz"||}| |r@W q
|W   S  typ } z|}W Y d }~q
d }~0 0 q
|d ur|nt|d S )NzP is not a Importer. All importers in OrderedImporter must inherit from Importer.)rF   r.   r   	TypeErrorr!   rL   ModuleNotFoundError)r    r   Zlast_errimporterr6   errr   r   r   r!      s     




zOrderedImporter.import_moduler"   c                 C   s,   | j D ] }|||}|dkr|  S qdS )Nr;   )rF   r   )r    r#   r$   rO   r   r   r   r   r      s
    

zOrderedImporter.whichmoduleN)r   r   r   r   rH   rL   r/   r   r!   r   r   r   r   r   r   rD      s
   rD   )rB   abcr   r   pickler   r   r   rC   typesr   typingr   r	   r
   r   r   	_manglingr   r   r   r0   r   r   r   r@   sys_importerrD   r   r   r   r   <module>   s    
