bundled/jinja2/custom_fixers/fix_broken_reraising.py @ 354188b0eca0

Allow signoff to be added when one already exists on a precursor.

The current obsolescence support makes little difference between
comments/signoff from a cset and the ones from its predecessors.

This patch avoid a signoff from a precursor to be seen as changeable, and allow
the user to re-signoff on the latest version of the changeset.
author Christophe de Vienne <cdevienne@gmail.com>
date Wed, 29 Oct 2014 14:32:27 +0100
parents 256716e3a3d7
children (none)
from lib2to3 import fixer_base, pytree
from lib2to3.fixer_util import Name, BlankLine, Name, Attr, ArgList


class FixBrokenReraising(fixer_base.BaseFix):
    PATTERN = """
    raise_stmt< 'raise' any ',' val=any ',' tb=any >
    """

    # run before the broken 2to3 checker with the same goal
    # tries to rewrite it with a rule that does not work out for jinja
    run_order = 1

    def transform(self, node, results):
        tb = results['tb'].clone()
        tb.prefix = ''
        with_tb = Attr(results['val'].clone(), Name('with_traceback')) + \
                  [ArgList([tb])]
        new = pytree.Node(self.syms.simple_stmt, [Name("raise")] + with_tb)
        new.prefix = node.prefix
        return new