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dZejd�fdd�Zdd� ZG dd� d�Zej� edkr�dd lmZ ed d d d � dS )!a< codecontext - display the block context above the edit window
Once code has scrolled off the top of a window, it can be difficult to
determine which block you are in. This extension implements a pane at the top
of each IDLE edit window which provides block structure hints. These hints are
the lines which contain the block opening keywords, e.g. 'if', for the
enclosing block. The number of hint lines is determined by the maxlines
variable in the codecontext section of config-extensions.def. Lines which do
not open blocks are not shown in the context hints pane.
� N)�maxsize)�TOP�X�SUNKEN)�idleConf�class�def�elif�else�except�finally�for�if�try�while�with�async�d i� z ^(\s*)(\w*)c C s |j | �j� S )z>Extract the beginning whitespace and first word from codeline.)�match�groups)�codeline�c� r �8/opt/alt/python36/lib64/python3.6/idlelib/codecontext.py�get_spaces_firstword s r c C sF t | �\}}t|�}t| �|ks,| | dkr0t}|tko:|}|| |fS )z�Return tuple of (line indent value, codeline, block start keyword).
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| j�| _dS ) a> Initialize settings for context block.
editwin is the Editor window for the context block.
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self.topvisible is the number of the top text line displayed.
self.info is a list of (line number, indent level, line text,
block keyword) tuples for the block structure above topvisible.
self.info[0] is initialized with a 'dummy' line which
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f� ||kr&P q&W |j� ||fS ) az Return a list of block line tuples and the 'last' indent.
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lastindentZlinenumr r r( r r r r � get_context� s zCodeContext.get_contextc C sZ t | jjd�jd�d �}| j|kr(dS | j|k rf| j|| j�\}}x�| jd d |krb| jd= qFW n`| jd d d }x,| jd d |kr�| jd d }| jd= qzW | j|| jd d d |�\}}| jj|� || _dd� | j| j d� D �}|d �rdnd}t |�| | j
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