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Raises OSError when the path cannot be handled. )rT �r� rG r r r � path_mtime} s zSourceLoader.path_mtimec C s d| � |�iS )a� Optional method returning a metadata dict for the specified path (a 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. Implementing this method allows the loader to read bytecode files. Raises OSError when the path cannot be handled. r� )r2 r1 r r r � path_stats� s zSourceLoader.path_statsc C s | � ||�S )z�Optional method which writes data (bytes) to a file path (a str). Implementing this method allows for the writing of bytecode files. The source path is needed in order to correctly transfer permissions )�set_data)r� r� � cache_pathr/ r r r �_cache_bytecode� s z SourceLoader._cache_bytecodec C r )z�Optional method which writes data (bytes) to a file path (a str). Implementing this method allows for the writing of bytecode files. Nr )r� rG r/ r r r r4 � r' zSourceLoader.set_datac C sF | � |�}z | �|�}W t|�S ty" } ztd|d�|�d}~ww )z4Concrete implementation of InspectLoader.get_source.z'source not available through get_data()r� N)r� �get_datarT r� r� )r� r� rG r� �excr r r � get_source� s �����zSourceLoader.get_sourcer� )� _optimizec C s t jt||dd|d�S )z�Return the code object compiled from source. The 'data' argument can be any object type that compile() supports. r* T)� dont_inheritr~ )r� r) �compile)r� r/ rG r: r r r �source_to_code� s �zSourceLoader.source_to_codec C s | � |�}d}d}d}d}d}zt|�}W n ty d}Y n�w z| �|�} W n ty1 Y nw t| d �}z| �|�} W n tyH Y nhw ||d�} zGt| || �} t| �dd� } | d@ dk}|r�| d @ dk}t j d kr�|swt j d kr�| �|�}t � t |�}t | ||| � n t| || d || � W n ttfy� Y nw t�d ||� t| |||d�S |du r�| �|�}| �||�}t�d|� tjs�|dur�|dur�|r�|du r�t � |�}t|||�} nt||t|��} z | �||| � W |S ty� Y |S w |S )z�Concrete implementation of InspectLoader.get_code. Reading of bytecode requires path_stats to be implemented. To write bytecode, set_data must also be implemented. NFTr� r� r� r r r2 �never�always�sizez {} matches {})r� r� r� zcode object from {})r� r� r} r3 rT r' r7 r� � memoryviewr� �check_hash_based_pycsr� �_RAW_MAGIC_NUMBERr� r� r� r� r� r� r� r= r �dont_write_bytecoder� r� r r6 )r� r� r� r� r� r� � hash_based� check_sourcer� �str/ r� r � bytes_data� code_objectr r r r( � s� � � �� � �������� � ��zSourceLoader.get_codeN) r� r� r� r2 r3 r6 r4 r9 r= r( r r r r r0 { s r0 c s\ e Zd ZdZdd� Zdd� Zdd� Ze� fdd ��Zed d � �Z d d � Z edd� �Z � Z S )� FileLoaderzgBase file loader class which implements the loader protocol methods that require file system usage.c C s || _ || _dS )zKCache the module name and the path to the file found by the finder.Nr� )r� r� rG r r r r! s zFileLoader.__init__c C � | j |j ko | j|jkS rL �� __class__r� �r� �otherr r r �__eq__ � �zFileLoader.__eq__c C � t | j�t | j�A S rL ��hashr� rG �r� r r r �__hash__ � zFileLoader.__hash__c s t t| ��|�S )zdLoad a module from a file. This method is deprecated. Use exec_module() instead. )�superrJ r/ r. �rM r r r/ s zFileLoader.load_modulec C � | j S �z:Return the path to the source file as found by the finder.rN r. r r r r� ) � zFileLoader.get_filenamec C s� t | ttf�r$t�t|��� }|�� W d � S 1 s w Y dS t�|d�� }|�� W d � S 1 s9w Y dS )z'Return the data from path as raw bytes.N�r)r� r0 �ExtensionFileLoaderri � open_coder �readrj )r� rG ro r r r r7 . s $�$�zFileLoader.get_datac C s ddl m} || �S )Nr )� FileReader)�importlib.readersra )r� r+ ra r r r �get_resource_reader7 s z FileLoader.get_resource_reader) r� r� r� r� r! rP rV r� r/ r� r7 rc � __classcell__r r rY r rJ s rJ c @ s. e Zd ZdZdd� Zdd� Zdd�dd �Zd S ) �SourceFileLoaderz>Concrete implementation of SourceLoader using the file system.c C s t |�}|j|jd�S )z!Return the metadata for the path.)r� r@ )rS �st_mtime�st_size)r� rG rG r r r r3 A s zSourceFileLoader.path_statsc C s t |�}| j|||d�S )N��_mode)r� r4 )r� r� r� r/ rV r r r r6 F s z SourceFileLoader._cache_bytecoder` rh c C s� t |�\}}g }|r t|�s t |�\}}|�|� |r t|�rt|�D ]1}t||�}zt�|� W q# ty: Y q# tyT } zt � d||� W Y d}~ dS d}~ww zt |||� t � d|� W dS ty~ } zt � d||� W Y d}~dS d}~ww )zWrite bytes data to a file.zcould not create {!r}: {!r}Nz created {!r}) rQ r\ rC �reversedrJ r �mkdir�FileExistsErrorrT r� r� rp ) r� rG r/ ri �parentr� rE rK r8 r r r r4 K s8 � ��� ���zSourceFileLoader.set_dataN)r� r� r� r� r3 r6 r4 r r r r re = s re c @ s e Zd ZdZdd� Zdd� ZdS )�SourcelessFileLoaderz-Loader which handles sourceless file imports.c C sD | � |�}| �|�}||d�}t|||� tt|�dd � ||d�S )Nr� r� )r� r� )r� r7 r� r� rA )r� r� rG r/ r� r r r r( n s � �z SourcelessFileLoader.get_codec C r )z'Return None as there is no source code.Nr r. r r r r9 ~ r z SourcelessFileLoader.get_sourceN)r� r� r� r� r( r9 r r r r rn j s rn c @ s\ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z e dd� �Z dS )r^ z]Loader for extension modules. The constructor is designed to work with FileFinder. c C s || _ || _d S rL r� )r� r� rG r r r r! � s z ExtensionFileLoader.__init__c C rK rL rL rN r r r rP � rQ zExtensionFileLoader.__eq__c C rR rL rS rU r r r rV � rW z ExtensionFileLoader.__hash__c C s$ t �tj|�}t �d|j| j� |S )z&Create an unitialized extension modulez&extension module {!r} loaded from {!r})r� r) r� �create_dynamicr� r� rG )r� r� r+ r r r r& � s ��z!ExtensionFileLoader.create_modulec C s$ t �tj|� t �d| j| j� dS )z Initialize an extension modulez(extension module {!r} executed from {!r}N)r� r) r� � exec_dynamicr� r� rG �r� r+ r r r r, � s �z ExtensionFileLoader.exec_modulec s$ t | j�d � t� fdd�tD ��S )z1Return True if the extension module is a package.r c 3 s � | ] }� d | kV qdS )r! Nr �r �suffix�� file_namer r r � s � �z1ExtensionFileLoader.is_package.<locals>.<genexpr>)rQ rG �anyr r. r rt r r� � s �z ExtensionFileLoader.is_packagec C r )z?Return None as an extension module cannot create a code object.Nr r. r r r r( � r z ExtensionFileLoader.get_codec C r )z5Return None as extension modules have no source code.Nr r. r r r r9 � r z ExtensionFileLoader.get_sourcec C rZ r[ rN r. r r r r� � r\ z ExtensionFileLoader.get_filenameN)r� r� r� r� r! rP rV r& r, r� r( r9 r� r� r r r r r^ � s r^ c @ sl e Zd ZdZdZdd� Zdd� Zdd� Zd d � Zd d � Z d d� Z dd� Z dd� Z dd� Z dd� Zdd� ZdS )�_NamespacePatha& Represents a namespace package's path. It uses the module name to find its parent module, and from there it looks up the parent's __path__. When this changes, the module's own path is recomputed, using path_finder. For top-level modules, the parent module's path is sys.path.r c C s, || _ || _t| �� �| _| j| _|| _d S rL )�_name�_pathr� �_get_parent_path�_last_parent_path�_epoch� _last_epoch� _path_finder�r� r� rG � path_finderr r r r! � s z_NamespacePath.__init__c C s& | j �d�\}}}|dkrdS |dfS )z>Returns a tuple of (parent-module-name, parent-path-attr-name)rs r )r rG �__path__)rx rz )r� rm �dot�mer r r �_find_parent_path_names� s z&_NamespacePath._find_parent_path_namesc C s | � � \}}ttj| |�S rL )r� r� r �modules)r� �parent_module_name�path_attr_namer r r rz � s z _NamespacePath._get_parent_pathc C sd t | �� �}|| jks| j| jkr/| �| j|�}|d ur(|jd u r(|jr(|j| _ || _| j| _| j S rL ) r� rz r{ r| r} r~ rx r� r� ry )r� � parent_pathr� r r r � _recalculate� s z_NamespacePath._recalculatec C � t | �� �S rL )�iterr� rU r r r �__iter__� � z_NamespacePath.__iter__c C s | � � | S rL �r� )r� �indexr r r � __getitem__� r� z_NamespacePath.__getitem__c C s || j |< d S rL )ry )r� r� rG r r r � __setitem__� s z_NamespacePath.__setitem__c C r� rL )r r� rU r r r �__len__� r� z_NamespacePath.__len__c C � d� | j�S )Nz_NamespacePath({!r}))rc ry rU r r r �__repr__� r� z_NamespacePath.__repr__c C s || � � v S rL r� �r� �itemr r r � __contains__� r� z_NamespacePath.__contains__c C s | j �|� d S rL )ry rC r� r r r rC � � z_NamespacePath.appendN)r� r� r� r� r| r! r� rz r� r� r� r� r� r� r� rC r r r r rw � s rw c @ sX e Zd Zdd� Zedd� �Zdd� Zdd� Zd d � Zd d � Z d d� Z dd� Z dd� Z dS )�_NamespaceLoaderc C s t |||�| _d S rL )rw ry r r r r r! � s z_NamespaceLoader.__init__c C s t �dt� d�| j�S )zsReturn repr for the module. The method is deprecated. The import machinery does the job itself. zR_NamespaceLoader.module_repr() is deprecated and slated for removal in Python 3.12z<module {!r} (namespace)>)ru rv rw rc r� )r+ r r r � module_repr s � z _NamespaceLoader.module_reprc C r )NTr r. r r r r� � z_NamespaceLoader.is_packagec C r )Nr r r. r r r r9 r� z_NamespaceLoader.get_sourcec C s t ddddd�S )Nr z<string>r* T)r; )r< r. r r r r( r� z_NamespaceLoader.get_codec C r r$ r r% r r r r& r' z _NamespaceLoader.create_modulec C s d S rL r rq r r r r, r� z _NamespaceLoader.exec_modulec C s t �d| j� t �| |�S )zbLoad a namespace module. This method is deprecated. Use exec_module() instead. z&namespace module loaded with path {!r})r� r� ry r- r. r r r r/ s � z _NamespaceLoader.load_modulec C s ddl m} || j�S )Nr )�NamespaceReader)rb r� ry )r� r+ r� r r r rc ' s z$_NamespaceLoader.get_resource_readerN) r� r� r� r! r r� r� r9 r( r& r, r/ rc r r r r r� � s r� c @ sv e Zd ZdZedd� �Zedd� �Zedd� �Zedd � �Z edd d ��Z edd d��Z eddd��Z edd� �Z d S )� PathFinderz>Meta path finder for sys.path and package __path__ attributes.c C sN t tj�� �D ]\} }|du rtj| = qt|d�r |�� qt jd7 _dS )z}Call the invalidate_caches() method on all path entry finders stored in sys.path_importer_caches (where implemented).N�invalidate_cachesr )�listr �path_importer_cache�itemsr� r� rw r| )r� �finderr r r r� 2 s �z PathFinder.invalidate_cachesc C sL t jdurt jst�dt� t jD ]}z|| �W S ty# Y qw dS )z.Search sys.path_hooks for a finder for 'path'.Nzsys.path_hooks is empty)r � path_hooksru rv r� r� )rG �hookr r r � _path_hooks? s �zPathFinder._path_hooksc C sd |dkrzt �� }W n ty Y dS w ztj| }W |S ty1 | �|�}|tj|< Y |S w )z�Get the finder for the path entry from sys.path_importer_cache. If the path entry is not in the cache, find the appropriate finder and cache it. If no finder is available, store None. r N)r r[ �FileNotFoundErrorr r� �KeyErrorr� )r rG r� r r r �_path_importer_cacheL s � � �z PathFinder._path_importer_cachec C s� t |d�rt�|�� d�}t�|t� |�|�\}}nt�|�� d�}t�|t� |�|�}g }|d ur:t�||�S t� |d �}||_ |S )Nr� z5.find_spec() not found; falling back to find_loader()z5.find_spec() not found; falling back to find_module()) r� r� � _object_nameru rv r� r� r r r� r� )r r� r� r� r� r� r� r r r �_legacy_get_specb s zPathFinder._legacy_get_specNc C s� g }|D ]C}t |ttf�sq| �|�}|durGt|d�r#|�||�}n| �||�}|du r.q|jdur7| S |j}|du rBt d��|� |� qt � |d�}||_|S )z?Find the loader or namespace_path for this module/package name.Nr zspec missing loader) r� r �bytesr� r� r r� r� r� r� r� r� r� ) r r� rG r �namespace_path�entryr� r� r� r r r � _get_specw s* � zPathFinder._get_specc C s^ |du rt j}| �|||�}|du rdS |jdu r-|j}|r+d|_t||| j�|_|S dS |S )z�Try to find a spec for 'fullname' on sys.path or 'path'. The search is based on sys.path_hooks and sys.path_importer_cache. N)r rG r� r� r� r� rw )r r� rG r r� r� r r r r � s zPathFinder.find_specc C s* t �dt� | �||�}|du rdS |jS )z�find the module on sys.path or 'path' based on sys.path_hooks and sys.path_importer_cache. This method is deprecated. Use find_spec() instead. zePathFinder.find_module() is deprecated and slated for removal in Python 3.12; use find_spec() insteadNr r r r r r � s � zPathFinder.find_modulec O s ddl m} |j| i |��S )a Find distributions. Return an iterable of all Distribution instances capable of loading the metadata for packages matching ``context.name`` (or all names if ``None`` indicated) along the paths in the list of directories ``context.path``. r )�MetadataPathFinder)�importlib.metadatar� �find_distributions)r� r� r� r r r r� � s z PathFinder.find_distributionsrL r )r� r� r� r� r r� r� r r� r� r� r r r� r r r r r� . s$ r� c @ sZ e Zd ZdZdd� Zdd� ZeZdd� Zdd � Z dd d �Z d d� Z e dd� �Z dd� Zd S )� FileFinderz�File-based finder. Interactions with the file system are cached for performance, being refreshed when the directory the finder is handling has been modified. c sp g }|D ]\� }|� � fdd�|D �� q|| _|pd| _t| j�s+tt�� | j�| _d| _t� | _ t� | _ dS )z�Initialize with the path to search on and a variable number of 2-tuples containing the loader and the file suffixes the loader recognizes.c 3 s � | ]}|� fV qd S rL r rr �r� r r r � s � z&FileFinder.__init__.<locals>.<genexpr>rs r� N) r� �_loadersrG r_ rJ r r[ � _path_mtime�set� _path_cache�_relaxed_path_cache)r� rG �loader_details�loadersr r r� r r! � s zFileFinder.__init__c C s d| _ dS )z Invalidate the directory mtime.r� N)r� rU r r r r� � rZ z FileFinder.invalidate_cachesc C s6 t �dt� | �|�}|du rdg fS |j|jpg fS )z�Try to find a loader for the specified module, or the namespace package portions. Returns (loader, list-of-portions). This method is deprecated. Use find_spec() instead. zeFileFinder.find_loader() is deprecated and slated for removal in Python 3.12; use find_spec() insteadN)ru rv rw r r� r� )r� r� r� r r r r� � s � zFileFinder.find_loaderc C s |||�}t ||||d�S )Nr� )r )r� r r� rG �smslr r� r r r r� � s �zFileFinder._get_specNc C sz d}|� d�d }z t| jpt�� �j}W n ty d}Y nw || jkr-| �� || _t � r8| j }|� � }n| j }|}||v rlt | j|�}| jD ] \} } d| } t || �} t| �rg| �| || |g|� S qJt|�}| jD ]7\} } z t | j|| �} W n ty� Y dS w tjd| dd� || |v r�t| �r�| �| || d|� S qo|r�t�d |� t�|d�} |g| _| S dS ) zoTry to find a spec for the specified module. Returns the matching spec, or None if not found. Frs r2 r� r! Nz trying {})� verbosityzpossible namespace for {})rz rS rG r r[ rf rT r� � _fill_cacher r� r� r� rJ r� rY r� r\ r� r� r� r� r� )r� r� r � is_namespace� tail_moduler� �cache� cache_module� base_pathrs r � init_filename� full_pathr� r r r r sV � � � �� zFileFinder.find_specc C s� | j }z t�|p t�� �}W n tttfy g }Y nw tj� d�s)t |�| _ n%t � }|D ] }|� d�\}}}|rCd� ||�� �}n|}|�|� q.|| _ tj� t�r^dd� |D �| _dS dS )zDFill the cache of potential modules and packages for this directory.r rs ra c S s h | ]}|� � �qS r )r� )r �fnr r r r P s z)FileFinder._fill_cache.<locals>.<setcomp>N)rG r �listdirr[ r� �PermissionError�NotADirectoryErrorr r r r� r� r� rc r� �addr! r� ) r� rG �contents�lower_suffix_contentsr� r� r� rs �new_namer r r r� 3 s& � �zFileFinder._fill_cachec s � �fdd�}|S )a A class method which returns a closure to use on sys.path_hook which will return an instance using the specified loaders and the path called on the closure. If the path called on the closure is not a directory, ImportError is raised. c s$ t | �s td| d��� | g��R � S )z-Path hook for importlib.machinery.FileFinder.z only directories are supportedrN )r\ r� rN �r r� r r �path_hook_for_FileFinder\ s z6FileFinder.path_hook.<locals>.path_hook_for_FileFinderr )r r� r� r r� r � path_hookR s zFileFinder.path_hookc C r� )NzFileFinder({!r}))rc rG rU r r r r� d r� zFileFinder.__repr__rL )r� r� r� r� r! r� r� r r� r� r r� r r� r� r r r r r� � s 3 r� c C s� | � d�}| � d�}|s!|r|j}n||kr t||�}nt||�}|s*t|||d�}z|| d< || d< || d< || d< W d S tyG Y d S w )N� __loader__�__spec__r� �__file__� __cached__)�getr� rn re r � Exception)�nsr� �pathname� cpathnamer� r� r r r �_fix_up_modulej s$ �r� c C s& t t�� f} ttf}ttf}| ||gS )z_Returns a list of file-based module loaders. Each item is a tuple (loader, suffixes). )r^ r� �extension_suffixesre r� rn r� )� extensions�source�bytecoder r r r� � s r� c C s | a d S rL )r� )�_bootstrap_moduler r r �_set_bootstrap_module� s r� c C s2 t | � t� }tj�tj|� g� tj�t � dS )z)Install the path-based import components.N) r� r� r r� r� r� r� � meta_pathrC r� )r� �supported_loadersr r r �_install� s r� )r` rL )NNN)r r )T)Ur� r� r� ri r ru r� r r �ntr r �posixr8 �allrA r� r? rD �_pathseps_with_colonr" �%_CASE_INSENSITIVE_PLATFORMS_BYTES_KEYr! r# r r* r0 r3 rJ rQ rS rX rY r\ r_ rp �type�__code__r� r( r� r' r- rC r� r� r� rC r� r r� �DEBUG_BYTECODE_SUFFIXES�OPTIMIZED_BYTECODE_SUFFIXESr� r� r� r� r� r� r� r� r� r� r� r� r� r� �objectr� r r r r0 rJ re rn r^ rw r� r� r� r� r� r� r� r r r r �<module> s� � G( ! �IC 2-5E1