U
��.e� � @ s0 d Z ddlZdd� Zdd� Zdd� Zd d
� ZdS ) a
Given a list of integers, made up of (hopefully) a small number of long runs
of consecutive integers, compute a representation of the form
((start1, end1), (start2, end2) ...). Then answer the question "was x present
in the original list?" in time O(log(# runs)).
� Nc C s� t | �}g }d}tt|��D ]b}|d t|�k rJ|| ||d d krJq ||d |d � }|�t|d |d d �� |}q t|�S )a Represent a list of integers as a sequence of ranges:
((start_0, end_0), (start_1, end_1), ...), such that the original
integers are exactly those x such that start_i <= x < end_i for some i.
Ranges are encoded as single integers (start << 32 | end), not as tuples.
������ r )�sorted�range�len�append�
_encode_range�tuple)Zlist_Z sorted_list�rangesZ
last_write�iZ
current_range� r �>/usr/lib/python3.8/site-packages/pip/_vendor/idna/intranges.py�intranges_from_list
s r c C s | d> |B S )N� r )�start�endr r r
r s r c C s | d? | d@ fS )Nr l �� r )�rr r r
�
_decode_range" s r c C sz t | d�}t�||�}|dkrNt||d �\}}|| krF|k rNn ndS |t|�k rvt|| �\}}|| krvdS dS )z=Determine if `int_` falls into one of the ranges in `ranges`.r r TF)r �bisectZ bisect_leftr r )Zint_r
Ztuple_�pos�left�right�_r r r
�intranges_contain& s
r )�__doc__r r r r r r r r r
� s