Mercurial > repos > shellac > guppy_basecaller

comparison env/lib/python3.7/site-packages/libpasteurize/fixes/fix_annotations.py @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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-1:000000000000 0:26e78fe6e8c4
1 u"""
2 Fixer to remove function annotations
3 """
4
5 from lib2to3 import fixer_base
6 from lib2to3.pgen2 import token
7 from lib2to3.fixer_util import syms
8
9 warning_text = u"Removing function annotations completely."
10
11 def param_without_annotations(node):
12 return node.children[0]
13
14 class FixAnnotations(fixer_base.BaseFix):
15
16 warned = False
17
18 def warn_once(self, node, reason):
19 if not self.warned:
20 self.warned = True
21 self.warning(node, reason=reason)
22
23 PATTERN = u"""
24 funcdef< 'def' any parameters< '(' [params=any] ')' > ['->' ret=any] ':' any* >
25 """
26
27 def transform(self, node, results):
28 u"""
29 This just strips annotations from the funcdef completely.
30 """
31 params = results.get(u"params")
32 ret = results.get(u"ret")
33 if ret is not None:
34 assert ret.prev_sibling.type == token.RARROW, u"Invalid return annotation"
35 self.warn_once(node, reason=warning_text)
36 ret.prev_sibling.remove()
37 ret.remove()
38 if params is None: return
39 if params.type == syms.typedargslist:
40 # more than one param in a typedargslist
41 for param in params.children:
42 if param.type == syms.tname:
43 self.warn_once(node, reason=warning_text)
44 param.replace(param_without_annotations(param))
45 elif params.type == syms.tname:
46 # one param
47 self.warn_once(node, reason=warning_text)
48 params.replace(param_without_annotations(params))