3
\ * " @ s d Z ddlmZ ddlmZ ddlmZ y ddlZW n2 ek
rf Z zejdkrR dZW Y ddZ[X nX y ddl Z W n& ek
r Z z
eZ W Y ddZ[X nX ddl
Z
dd Z G d
d d e
j d Z
G d
d de
Ze eejejejej G dd de
Ze eej G dd de
j d ZG dd deZG dd deZe eejej G dd deZe eej G dd dejeeZe eejej G dd d ej eeZ e e ej dS ) z(Abstract base classes related to import. )
_bootstrap)_bootstrap_external) machinery N_frozen_importlibc G s` xZ|D ]R}| j | td k rytt|j}W n tk
rL tt|j}Y nX | j | qW d S )N)registerr getattr__name__AttributeError_frozen_importlib_external) abstract_clsclassescls
frozen_cls r %/usr/lib64/python3.6/importlib/abc.py _register s
r c @ s e Zd ZdZejdddZdS )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.
Nc C s dS )zAn 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 )selffullnamepathr r r find_module' s zFinder.find_module)N)r
__module__ __qualname____doc__abcabstractmethodr 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 | dsdS | j||}|dk r(|jS dS )aN 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 in favor of finder.find_spec(). If find_spec()
exists then backwards-compatible functionality is provided for this
method.
find_specN)hasattrr loader)r r r foundr r r r 6 s
zMetaPathFinder.find_modulec C s dS )zAn optional method for clearing the finder's cache, if any.
This method is used by importlib.invalidate_caches().
Nr )r r r r invalidate_cachesF s z MetaPathFinder.invalidate_cachesN)r r r r r r# r r r r r / s r c @ s& e Zd ZdZdd ZejZdd ZdS )PathEntryFinderz>Abstract base class for path entry finders used by PathFinder.c C sL t | dsdg fS | j|}|dk r@|js0g }n|j}|j|fS dg fS dS )aC 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 in favor of finder.find_spec(). If find_spec()
is provided than backwards-compatible functionality is provided.
r N)r r submodule_search_locationsr! )r r r" portionsr r r find_loaderV s
zPathEntryFinder.find_loaderc C s dS )zAn 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 s z!PathEntryFinder.invalidate_cachesN) r r r r r' r _find_module_shimr r# r r r r r$ O s r$ c @ s( e Zd ZdZdd Zdd Zdd ZdS ) Loaderz'Abstract base class for import loaders.c C s dS )zReturn a module to initialize and into which to load.
This method should raise ImportError if anything prevents it
from creating a new module. It may return None to indicate
that the spec should create the new module.
Nr )r specr r r
create_module s zLoader.create_modulec C s t | dsttj| |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 )zReturn a module's repr.
Used by the module type when the method does not raise
NotImplementedError.
This method is deprecated.
N)NotImplementedError)r moduler r r module_repr s
zLoader.module_reprN)r r r r r+ r/ r2 r r r r r) { s
r) c @ s e Zd ZdZejdd ZdS )ResourceLoaderzAbstract 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)IOError)r r r r r get_data s zResourceLoader.get_dataN)r r r r r r r5 r r r r r3 s r3 c @ sL e Zd ZdZdd Zdd Zejdd Ze d d d
Z
e j j
Z
e j jZd S )
InspectLoaderzAbstract 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 )zOptional 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)r- )r r r r r
is_package s zInspectLoader.is_packagec C s | j |}|dkrdS | j|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_sourcesource_to_code)r r sourcer r r get_code s
zInspectLoader.get_codec C s t dS )zAbstract 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.
N)r- )r r r r r r8 s zInspectLoader.get_sourcec C s t | |dddS )zCompile '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 r9 s z InspectLoader.source_to_codeN)r< )r r r r r7 r; r r r8 staticmethodr9 r
_LoaderBasicsr, r/ r r r r r6 s
r6 c @ s& e Zd ZdZejdd Zdd ZdS )ExecutionLoaderzAbstract 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 )zAbstract method which should return the value that __file__ is to be
set to.
Raises ImportError if the module cannot be found.
N)r- )r r r r r get_filename s z ExecutionLoader.get_filenamec C sP | j |}|dkrdS y| j|}W n tk
r> | j|S X | j||S dS )zMethod 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)r8 rD r- r9 )r r r: r r r r r; s
zExecutionLoader.get_codeN)r r r r r r rD r; r r r r rC s rC c @ s e Zd ZdZdS )
FileLoaderz[Abstract base class partially implementing the ResourceLoader and
ExecutionLoader ABCs.N)r r r r r r r r rE s rE 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 krtt| j |d S )z6Return the (int) modification time for the path (str).mtime)
path_stats__func__rF r4 int)r r r r r
path_mtime. s zSourceLoader.path_mtimec C s | j jtj krtd| j |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.
rG )rK rI rF r4 )r r r r r rH 4 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 r@ r r r set_data? s zSourceLoader.set_dataN)r r r r rK rH rL r r r r rF s rF ) r r r r r r- excnamer r r ABCMetar r BuiltinImporterFrozenImporter
PathFinderWindowsRegistryFinderr$
FileFinderr) r3 r6 rC ExtensionFileLoaderrE SourceFileLoaderSourcelessFileLoaderrF r r r r s@
) /2" ,