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britney.py: Avoid some O(n) look-ups in the auto-hinter

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Signed-off-by: Niels Thykier <niels@thykier.net>
This commit is contained in:
Niels Thykier 2015-06-02 21:33:52 +02:00
parent cc58511c09
commit ffcfa8e27e
1 changed files with 4 additions and 2 deletions
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britney.py
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@ -2805,7 +2805,9 @@ class Britney(object):
type="I")
# consider only excuses which are valid candidates
excuses = dict((x.name, x) for x in self.excuses if x.name in [y.uvname for y in self.upgrade_me])
valid_excuses = frozenset(y.uvname for y in self.upgrade_me)
excuses = dict((x.name, x) for x in self.excuses if x.name in valid_excuses)
excuses_deps = dict((name, set(excuse.deps)) for name, excuse in excuses.items())
sources_t = self.sources['testing']
groups = set()
@ -2871,7 +2873,7 @@ class Britney(object):
for item, ver in items:
# excuses which depend on "item" or are depended on by it
new_items = [(x, excuses[x].ver[1]) for x in excuses if \
(item in excuses[x].deps or x in excuses[item].deps) \
(item in excuses_deps[x] or x in excuses_deps[item]) \
and (x, excuses[x].ver[1]) not in seen_items]
items.extend(new_items)
seen_items.update(new_items)