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d �Z e e ej � dS ) z(Abstract base classes related to import.� )�
_bootstrap)�_bootstrap_external)� machinery� N�_frozen_importlibc G s\ |D ]R}| � |� td k rztt|j�}W n tk
rJ tt|j�}Y nX | � |� qd S )N)�registerr �getattr�__name__�AttributeError�_frozen_importlib_external)� abstract_cls�classes�cls�
frozen_cls� r �%/usr/lib64/python3.8/importlib/abc.py� _register s
r c @ s e Zd ZdZejddd��ZdS )�Findera< Legacy abstract base class for import finders.
It may be subclassed for compatibility with legacy third party
reimplementations of the import system. Otherwise, finder
implementations should derive from the more specific MetaPathFinder
or PathEntryFinder ABCs.
Deprecated since Python 3.3
Nc C s dS )z�An abstract method that should find a module.
The fullname is a str and the optional path is a str or None.
Returns a Loader object or None.
Nr )�self�fullname�pathr r r � find_module* s zFinder.find_module)N)r �
__module__� __qualname__�__doc__�abc�abstractmethodr r r r r r s
r )� metaclassc @ s e Zd ZdZdd� Zdd� ZdS )�MetaPathFinderz8Abstract base class for import finders on sys.meta_path.c C s< t jdtdd� t| d�s dS | �||�}|dk r8|jS dS )a_ Return a loader for the module.
If no module is found, return None. The fullname is a str and
the path is a list of strings or None.
This method is deprecated since Python 3.4 in favor of
finder.find_spec(). If find_spec() exists then backwards-compatible
functionality is provided for this method.
zxMetaPathFinder.find_module() is deprecated since Python 3.4 in favor of MetaPathFinder.find_spec() (available since 3.4)� ��
stacklevel� find_specN)�warnings�warn�DeprecationWarning�hasattrr" �loader)r r r �foundr r r r 9 s �
zMetaPathFinder.find_modulec C s dS )z�An optional method for clearing the finder's cache, if any.
This method is used by importlib.invalidate_caches().
Nr �r r r r �invalidate_cachesN s z MetaPathFinder.invalidate_cachesN)r r r r r r* r r r r r 2 s r c @ s& e Zd ZdZdd� ZejZdd� ZdS )�PathEntryFinderz>Abstract base class for path entry finders used by PathFinder.c C s\ t jdtdd� t| d�s"dg fS | �|�}|dk rP|js@g }n|j}|j|fS dg fS dS )a[ Return (loader, namespace portion) for the path entry.
The fullname is a str. The namespace portion is a sequence of
path entries contributing to part of a namespace package. The
sequence may be empty. If loader is not None, the portion will
be ignored.
The portion will be discarded if another path entry finder
locates the module as a normal module or package.
This method is deprecated since Python 3.4 in favor of
finder.find_spec(). If find_spec() is provided than backwards-compatible
functionality is provided.
zzPathEntryFinder.find_loader() is deprecated since Python 3.4 in favor of PathEntryFinder.find_spec() (available since 3.4)r r r" N)r# r$ r% r& r" �submodule_search_locationsr' )r r r( �portionsr r r � find_loader^ s �
zPathEntryFinder.find_loaderc C s dS )z�An optional method for clearing the finder's cache, if any.
This method is used by PathFinder.invalidate_caches().
Nr r) r r r r* � s z!PathEntryFinder.invalidate_cachesN) r r r r r. r �_find_module_shimr r* r r r r r+ W s r+ c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) �Loaderz'Abstract base class for import loaders.c C s dS )z�Return a module to initialize and into which to load.
This method should raise ImportError if anything prevents it
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that the spec should create the new module.
Nr )r �specr r r �
create_module� s zLoader.create_modulec C s t | d�st�t�| |�S )a� Return the loaded module.
The module must be added to sys.modules and have import-related
attributes set properly. The fullname is a str.
ImportError is raised on failure.
This method is deprecated in favor of loader.exec_module(). If
exec_module() exists then it is used to provide a backwards-compatible
functionality for this method.
� exec_module)r& � ImportErrorr �_load_module_shim�r r r r r � load_module� s
zLoader.load_modulec C s t �dS )z�Return a module's repr.
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N)�NotImplementedError)r �moduler r r � module_repr� s
zLoader.module_reprN)r r r r r2 r7 r: r r r r r0 � s
r0 c @ s e Zd ZdZejdd� �ZdS )�ResourceLoaderz�Abstract base class for loaders which can return data from their
back-end storage.
This ABC represents one of the optional protocols specified by PEP 302.
c C s t �dS )zwAbstract method which when implemented should return the bytes for
the specified path. The path must be a str.N)�OSError�r r r r r �get_data� s zResourceLoader.get_dataN)r r r r r r r> r r r r r; � s r; c @ sL e Zd ZdZdd� Zdd� Zejdd� �Ze d d d
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InspectLoaderz�Abstract base class for loaders which support inspection about the
modules they can load.
This ABC represents one of the optional protocols specified by PEP 302.
c C s t �dS )z�Optional method which when implemented should return whether the
module is a package. The fullname is a str. Returns a bool.
Raises ImportError if the module cannot be found.
N�r4 r6 r r r �
is_package� s zInspectLoader.is_packagec C s | � |�}|dkrdS | �|�S )a Method which returns the code object for the module.
The fullname is a str. Returns a types.CodeType if possible, else
returns None if a code object does not make sense
(e.g. built-in module). Raises ImportError if the module cannot be
found.
N)�
get_source�source_to_code)r r �sourcer r r �get_code� s
zInspectLoader.get_codec C s t �dS )z�Abstract method which should return the source code for the
module. The fullname is a str. Returns a str.
Raises ImportError if the module cannot be found.
Nr@ r6 r r r rB � s zInspectLoader.get_source�<string>c C s t | |ddd�S )z�Compile 'data' into a code object.
The 'data' argument can be anything that compile() can handle. The'path'
argument should be where the data was retrieved (when applicable).�execT)� dont_inherit)�compile)�datar r r r rC � s z InspectLoader.source_to_codeN)rF )r r r r rA rE r r rB � staticmethodrC r �
_LoaderBasicsr3 r7 r r r r r? � s
r? c @ s& e Zd ZdZejdd� �Zdd� ZdS )�ExecutionLoaderz�Abstract base class for loaders that wish to support the execution of
modules as scripts.
This ABC represents one of the optional protocols specified in PEP 302.
c C s t �dS )z�Abstract method which should return the value that __file__ is to be
set to.
Raises ImportError if the module cannot be found.
Nr@ r6 r r r � get_filename s z ExecutionLoader.get_filenamec C sT | � |�}|dkrdS z| �|�}W n tk
rB | �|� Y S X | �||�S dS )z�Method to return the code object for fullname.
Should return None if not applicable (e.g. built-in module).
Raise ImportError if the module cannot be found.
N)rB rN r4 rC )r r rD r r r r rE s
zExecutionLoader.get_codeN)r r r r r r rN rE r r r r rM � s
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FileLoaderz[Abstract base class partially implementing the ResourceLoader and
ExecutionLoader ABCs.N)r r r r r r r r rO ! s rO c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) � SourceLoadera� Abstract base class for loading source code (and optionally any
corresponding bytecode).
To support loading from source code, the abstractmethods inherited from
ResourceLoader and ExecutionLoader need to be implemented. To also support
loading from bytecode, the optional methods specified directly by this ABC
is required.
Inherited abstractmethods not implemented in this ABC:
* ResourceLoader.get_data
* ExecutionLoader.get_filename
c C s$ | j jtj krt�t| � |�d �S )z6Return the (int) modification time for the path (str).�mtime)�
path_stats�__func__rP r< �intr= r r r �
path_mtime; s zSourceLoader.path_mtimec C s | j jtj krt�d| � |�iS )a Return a metadata dict for the source pointed to by the path (str).
Possible keys:
- 'mtime' (mandatory) is the numeric timestamp of last source
code modification;
- 'size' (optional) is the size in bytes of the source code.
rQ )rU rS rP r< r= r r r rR A s zSourceLoader.path_statsc C s dS )a Write the bytes to the path (if possible).
Accepts a str path and data as bytes.
Any needed intermediary directories are to be created. If for some
reason the file cannot be written because of permissions, fail
silently.
Nr )r r rJ r r r �set_dataL s zSourceLoader.set_dataN)r r r r rU rR rV r r r r rP * s rP c @ sH e Zd ZdZejdd� �Zejdd� �Zejdd� �Zejdd � �Z d
S ) �ResourceReaderz�Abstract base class to provide resource-reading support.
Loaders that support resource reading are expected to implement
the ``get_resource_reader(fullname)`` method and have it either return None
or an object compatible with this ABC.
c C s t �dS )a Return an opened, file-like object for binary reading.
The 'resource' argument is expected to represent only a file name
and thus not contain any subdirectory components.
If the resource cannot be found, FileNotFoundError is raised.
N��FileNotFoundError�r �resourcer r r �
open_resourceb s z ResourceReader.open_resourcec C s t �dS )a! Return the file system path to the specified resource.
The 'resource' argument is expected to represent only a file name
and thus not contain any subdirectory components.
If the resource does not exist on the file system, raise
FileNotFoundError.
NrX rZ r r r �
resource_pathm s
z ResourceReader.resource_pathc C s t �dS )z7Return True if the named 'name' is consider a resource.NrX )r �namer r r � is_resourcey s zResourceReader.is_resourcec C s g S )z?Return an iterable of strings over the contents of the package.r r) r r r �contents~ s zResourceReader.contentsN)
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