B
‡ùœÉ ‡êã @ sZ d Z ddlmZ ddlmZ ddlmZ ddlmZmZm Z m
Z
m Z G dd„ dej ƒZ
dS ) a[ Fixer for 'raise E, V, T'
raise -> raise
raise E -> raise E
raise E, V -> raise E(V)
raise E, V, T -> raise E(V).with_traceback(T)
raise E, None, T -> raise E.with_traceback(T)
raise (((E, E'), E''), E'''), V -> raise E(V)
raise "foo", V, T -> warns about string exceptions
CAVEATS:
1) "raise E, V" will be incorrectly translated if V is an exception
instance. The correct Python 3 idiom is
raise E from V
but since we can't detect instance-hood by syntax alone and since
any client code would have to be changed as well, we don't automate
this.
é )Úpytree)Útoken)Ú
fixer_base)ÚNameÚCallÚAttrÚArgListÚis_tuplec @ s e Zd ZdZdZdd„ ZdS )ÚFixRaiseTzB
raise_stmt< 'raise' exc=any [',' val=any [',' tb=any]] >
c C sl | j }|d ¡ }|jtjkr2d}| ||¡ d S t|ƒrbx t|ƒrZ|jd jd ¡ }qD s z&FixRaise.transform..éÿÿÿÿÚ ÚtbÚNoneÚwith_traceback)Úprefix)Úsymsr Útyper ÚSTRINGZcannot_convertr Zchildrenr r ZNodeZ
raise_stmtr ÚNAMEÚvaluer r r Z simple_stmt) ÚselfZnodeZresultsr r ÚmsgÚnewr Úargsr ÚeZwith_tbr r r Ú transform& s@
zFixRaise.transformN)Ú__name__Ú
__module__Ú __qualname__Z
BM_compatibleZPATTERNr' r r r r r
s r
N)Ú__doc__r r Zpgen2r r Z
fixer_utilr r r r r ZBaseFixr
r r r r Ú s