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d�Zdd� ZG dd� d�ZdS )aK Functions to generate files readable with Georg Sander's vcg
(Visualization of Compiler Graphs).
You can download vcg at http://rw4.cs.uni-sb.de/~sander/html/gshome.html
Note that vcg exists as a debian package.
See vcg's documentation for explanation about the different values that
maybe used for the functions parameters.
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left_to_rightZ
right_to_leftZ
top_to_bottomZ
bottom_to_topZmaxdepthZ maxdepthslowZmindepthZ mindepthslowZ mindegreeZ minindegreeZ minoutdegreeZ maxdegreeZ maxindegreeZ maxoutdegree)�yes�no) ZblackZwhiteZblueZredZgreenZyellowZmagentaZ lightgreyZcyanZdarkgreyZdarkblueZdarkredZ darkgreenZ
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lightgreenZ lightyellowZ lightmagentaZ lightcyanZlilacZ turquoiseZ
aquamarineZkhakiZpurpleZ yellowgreenZpinkZorangeZorchid)ZboxZellipseZrhombZtriangle)�centerZ left_justifyZ
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arrowstyleZbackarrowstyler �priority�anchorr c C sR xL| D ]D}|t jkry(t|�}|dkr:| �|dt|� �} W q Y qX qW | S )z8Convert latin characters using vcg escape sequence.
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VCGPrinterzA vcg graph writer.
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z %sN)r/ )r0 r) r) r* r3 � s zVCGPrinter._inc_indentc C s | j dd� | _ dS )z decrement indentation
N���)r/ )r0 r) r) r* r8 � s zVCGPrinter._dec_indentN)r- ) �__name__�
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