Mercurial > repos > guerler > springsuite
comparison planemo/lib/python3.7/site-packages/libpasteurize/fixes/feature_base.py @ 1:56ad4e20f292 draft
"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
| author | guerler |
|---|---|
| date | Fri, 31 Jul 2020 00:32:28 -0400 |
| parents | |
| children |
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| 0:d30785e31577 | 1:56ad4e20f292 |
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| 1 u""" | |
| 2 Base classes for features that are backwards-incompatible. | |
| 3 | |
| 4 Usage: | |
| 5 features = Features() | |
| 6 features.add(Feature("py3k_feature", "power< 'py3k' any* >", "2.7")) | |
| 7 PATTERN = features.PATTERN | |
| 8 """ | |
| 9 | |
| 10 pattern_unformatted = u"%s=%s" # name=pattern, for dict lookups | |
| 11 message_unformatted = u""" | |
| 12 %s is only supported in Python %s and above.""" | |
| 13 | |
| 14 class Feature(object): | |
| 15 u""" | |
| 16 A feature has a name, a pattern, and a minimum version of Python 2.x | |
| 17 required to use the feature (or 3.x if there is no backwards-compatible | |
| 18 version of 2.x) | |
| 19 """ | |
| 20 def __init__(self, name, PATTERN, version): | |
| 21 self.name = name | |
| 22 self._pattern = PATTERN | |
| 23 self.version = version | |
| 24 | |
| 25 def message_text(self): | |
| 26 u""" | |
| 27 Format the above text with the name and minimum version required. | |
| 28 """ | |
| 29 return message_unformatted % (self.name, self.version) | |
| 30 | |
| 31 class Features(set): | |
| 32 u""" | |
| 33 A set of features that generates a pattern for the features it contains. | |
| 34 This set will act like a mapping in that we map names to patterns. | |
| 35 """ | |
| 36 mapping = {} | |
| 37 | |
| 38 def update_mapping(self): | |
| 39 u""" | |
| 40 Called every time we care about the mapping of names to features. | |
| 41 """ | |
| 42 self.mapping = dict([(f.name, f) for f in iter(self)]) | |
| 43 | |
| 44 @property | |
| 45 def PATTERN(self): | |
| 46 u""" | |
| 47 Uses the mapping of names to features to return a PATTERN suitable | |
| 48 for using the lib2to3 patcomp. | |
| 49 """ | |
| 50 self.update_mapping() | |
| 51 return u" |\n".join([pattern_unformatted % (f.name, f._pattern) for f in iter(self)]) | |
| 52 | |
| 53 def __getitem__(self, key): | |
| 54 u""" | |
| 55 Implement a simple mapping to get patterns from names. | |
| 56 """ | |
| 57 return self.mapping[key] |