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annotate planemo/lib/python3.7/site-packages/libpasteurize/fixes/fix_next.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1 u"""
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2 Fixer for:
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3 it.__next__() -> it.next().
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4 next(it) -> it.next().
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5 """
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6
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7 from lib2to3.pgen2 import token
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8 from lib2to3.pygram import python_symbols as syms
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9 from lib2to3 import fixer_base
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10 from lib2to3.fixer_util import Name, Call, find_binding, Attr
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11
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12 bind_warning = u"Calls to builtin next() possibly shadowed by global binding"
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15 class FixNext(fixer_base.BaseFix):
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16
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17 PATTERN = u"""
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18 power< base=any+ trailer< '.' attr='__next__' > any* >
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19 |
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20 power< head='next' trailer< '(' arg=any ')' > any* >
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21 |
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22 classdef< 'class' base=any+ ':'
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23 suite< any*
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24 funcdef< 'def'
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25 attr='__next__'
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26 parameters< '(' NAME ')' > any+ >
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27 any* > >
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28 """
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29
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30 def transform(self, node, results):
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31 assert results
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32
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33 base = results.get(u"base")
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34 attr = results.get(u"attr")
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35 head = results.get(u"head")
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36 arg_ = results.get(u"arg")
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37 if arg_:
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38 arg = arg_.clone()
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39 head.replace(Attr(Name(unicode(arg),prefix=head.prefix),
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40 Name(u"next")))
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41 arg_.remove()
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42 elif base:
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43 attr.replace(Name(u"next", prefix=attr.prefix))