U AT^n c@sZdZddlmZddlmZddlmZddlmZmZm Z m Z m Z Gdddej Z 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. i)pytree)token) fixer_base)NameCallAttrArgListis_tuplec@seZdZdZdZddZdS)FixRaiseTzB raise_stmt< 'raise' exc=any [',' val=any [',' tb=any]] > c Csh|j}|d}|jtjkr2d}|||dSt|r^t|rX|jdjd}q:d|_d|krt |j t d|g}|j|_|S|d}t|rdd |jdd D}n d |_|g}d |krB|d } d | _|} |jtj ks|jd krt||} t| t dt| gg} t |jt dg| }|j|_|St j |j t dt||g|jdSdS)Nexcz+Python 3 does not support string exceptionsiiz valZraisecSsg|] }|qS)clone)Z.0Zcr r //usr/lib64/python3.8/lib2to3/fixes/fix_raise.pyZ Dsz&FixRaise.transform..itbZNoneZwith_traceback)prefix)symsr ZtyperZSTRINGZcannot_convertrZchildrenrrZNodeZ raise_stmtrZNAMEZvaluerrrZ simple_stmt) ZselfZnodeZresultsrr ZmsgZnewr ZargsrZeZwith_tbr r r transform&sB       zFixRaise.transformN)Z__name__Z __module__Z __qualname__Z BM_compatibleZPATTERNrr r r r rsrN)Z__doc__rrZpgen2rrZ fixer_utilrrrrrZBaseFixrr r r r Zs