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comparison planemo/lib/python3.7/site-packages/libpasteurize/fixes/fix_features.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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0:d30785e31577 1:56ad4e20f292
1 u"""
2 Warn about features that are not present in Python 2.5, giving a message that
3 points to the earliest version of Python 2.x (or 3.x, if none) that supports it
4 """
5
6 from .feature_base import Feature, Features
7 from lib2to3 import fixer_base
8
9 FEATURES = [
10 #(FeatureName,
11 # FeaturePattern,
12 # FeatureMinVersion,
13 #),
14 (u"memoryview",
15 u"power < 'memoryview' trailer < '(' any* ')' > any* >",
16 u"2.7",
17 ),
18 (u"numbers",
19 u"""import_from< 'from' 'numbers' 'import' any* > |
20 import_name< 'import' ('numbers' dotted_as_names< any* 'numbers' any* >) >""",
21 u"2.6",
22 ),
23 (u"abc",
24 u"""import_name< 'import' ('abc' dotted_as_names< any* 'abc' any* >) > |
25 import_from< 'from' 'abc' 'import' any* >""",
26 u"2.6",
27 ),
28 (u"io",
29 u"""import_name< 'import' ('io' dotted_as_names< any* 'io' any* >) > |
30 import_from< 'from' 'io' 'import' any* >""",
31 u"2.6",
32 ),
33 (u"bin",
34 u"power< 'bin' trailer< '(' any* ')' > any* >",
35 u"2.6",
36 ),
37 (u"formatting",
38 u"power< any trailer< '.' 'format' > trailer< '(' any* ')' > >",
39 u"2.6",
40 ),
41 (u"nonlocal",
42 u"global_stmt< 'nonlocal' any* >",
43 u"3.0",
44 ),
45 (u"with_traceback",
46 u"trailer< '.' 'with_traceback' >",
47 u"3.0",
48 ),
49 ]
50
51 class FixFeatures(fixer_base.BaseFix):
52
53 run_order = 9 # Wait until all other fixers have run to check for these
54
55 # To avoid spamming, we only want to warn for each feature once.
56 features_warned = set()
57
58 # Build features from the list above
59 features = Features([Feature(name, pattern, version) for \
60 name, pattern, version in FEATURES])
61
62 PATTERN = features.PATTERN
63
64 def match(self, node):
65 to_ret = super(FixFeatures, self).match(node)
66 # We want the mapping only to tell us the node's specific information.
67 try:
68 del to_ret[u'node']
69 except Exception:
70 # We want it to delete the 'node' from the results
71 # if it's there, so we don't care if it fails for normal reasons.
72 pass
73 return to_ret
74
75 def transform(self, node, results):
76 for feature_name in results:
77 if feature_name in self.features_warned:
78 continue
79 else:
80 curr_feature = self.features[feature_name]
81 if curr_feature.version >= u"3":
82 fail = self.cannot_convert
83 else:
84 fail = self.warning
85 fail(node, reason=curr_feature.message_text())
86 self.features_warned.add(feature_name)