U
e5d� � @ sn d Z ddlZddlZddlZddlZdddgZddd�Zi add� Zddd �Z dd
d�Z
dd d �Z d
d� Z dS )z�Cache lines from Python source files.
This is intended to read lines from modules imported -- hence if a filename
is not found, it will look down the module search path for a file by
that name.
� N�getline�
clearcache�
checkcachec C s: t | |�}d| kr"t|�kr2n n ||d S dS d S )N� � )�getlines�len)�filename�lineno�module_globals�lines� r
�!/usr/lib64/python3.8/linecache.pyr s
c C s i a dS )zClear the cache entirely.N)�cacher
r
r
r r s c C sX | t kr(t | }t|�dkr(t | d S z t| |�W S tk
rR t� g Y S X dS )z�Get the lines for a Python source file from the cache.
Update the cache if it doesn't contain an entry for this file already.r � N)r r � updatecache� MemoryErrorr )r r �entryr
r
r r % s r c C s� | dkrt t�� �}n| tkr&| g}ndS |D ]�} t| }t|�dkrHq.|\}}}}|dkr^q.zt�|�}W n$ tk
r� t�| d� Y q.Y nX ||jks�||j kr.t�| d� q.dS )zUDiscard cache entries that are out of date.
(This is not checked upon each call!)Nr )
�listr �keysr �os�stat�OSError�pop�st_size�st_mtime)r � filenamesr �size�mtimer �fullnamer r
r
r r 5 s&
c
C s� | t kr$tt | �dkr$t �| d� | r<| �d�r@| �d�r@g S | }zt�|�}W �n tk
�rn | }t| |�r�zt | d � }W n t tfk
r� Y nDX |dkr�g Y S t|�ddd� |�
� D �|ft | < t | d Y S tj � | �r�g Y S t
j D ]d}ztj �||�}W n ttfk
�r0 Y q�Y nX zt�|�}W �qjW q� tk
�r^ Y q�X q�g Y S Y nX z"t�|��}|�� }W 5 Q R X W n tk
�r� g Y S X |�r�|d �d
��s�|d d
7 < |j|j } }
| |
||ft | < |S ) z�Update a cache entry and return its list of lines.
If something's wrong, print a message, discard the cache entry,
and return an empty list.r N�<�>r c S s g | ] }|d �qS )�
r
)�.0�liner
r
r �
q s z updatecache..r �����r" )r r r �
startswith�endswithr r r � lazycache� ImportError�
splitlines�path�isabs�sys�join� TypeError�AttributeError�tokenize�open� readlinesr r ) r r r r �basename�data�dirname�fpr r r r
r
r r R s\
�
r c C s� | t kr tt | �dkr dS dS | r8| �d�r<| �d�r r. r r2 �__all__r r r r r r r) r
r
r
r � s
A