Mercurial > repos > shellac > guppy_basecaller
diff env/lib/python3.7/site-packages/libpasteurize/fixes/fix_raise.py @ 2:6af9afd405e9 draft
"planemo upload commit 0a63dd5f4d38a1f6944587f52a8cd79874177fc1"
author | shellac |
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date | Thu, 14 May 2020 14:56:58 -0400 |
parents | 26e78fe6e8c4 |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/env/lib/python3.7/site-packages/libpasteurize/fixes/fix_raise.py Thu May 14 14:56:58 2020 -0400 @@ -0,0 +1,25 @@ +u"""Fixer for 'raise E(V).with_traceback(T)' -> 'raise E, V, T'""" + +from lib2to3 import fixer_base +from lib2to3.fixer_util import Comma, Node, Leaf, token, syms + +class FixRaise(fixer_base.BaseFix): + + PATTERN = u""" + raise_stmt< 'raise' (power< name=any [trailer< '(' val=any* ')' >] + [trailer< '.' 'with_traceback' > trailer< '(' trc=any ')' >] > | any) ['from' chain=any] >""" + + def transform(self, node, results): + name, val, trc = (results.get(u"name"), results.get(u"val"), results.get(u"trc")) + chain = results.get(u"chain") + if chain is not None: + self.warning(node, u"explicit exception chaining is not supported in Python 2") + chain.prev_sibling.remove() + chain.remove() + if trc is not None: + val = val[0] if val else Leaf(token.NAME, u"None") + val.prefix = trc.prefix = u" " + kids = [Leaf(token.NAME, u"raise"), name.clone(), Comma(), + val.clone(), Comma(), trc.clone()] + raise_stmt = Node(syms.raise_stmt, kids) + node.replace(raise_stmt)