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| author |   Zac Medico <zmedico@gentoo.org> | 2008-06-20 16:47:45 +0000 |
|---|---|---|
| committer | Zac Medico <zmedico@gentoo.org> | 2008-06-20 16:47:45 +0000 |
| commit | 8918b6b0b3ab35181d23d4d760a6f48574c6c869 (patch) | |
| tree | 0fa329e72118f1571bb4e1486b6b88bea10acd54 /pym | |
| parent | Use a metaclass to cache Atom instances transparently. This should improve (diff) | |
| download | portage-idfetch-8918b6b0b3ab35181d23d4d760a6f48574c6c869.tar.gz portage-idfetch-8918b6b0b3ab35181d23d4d760a6f48574c6c869.tar.bz2 portage-idfetch-8918b6b0b3ab35181d23d4d760a6f48574c6c869.zip | |
Make the Atom cache dict private and add a docstring for _AtomCache.
svn path=/main/trunk/; revision=10742
Diffstat (limited to 'pym')
| -rw-r--r-- | pym/portage/dep.py | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/pym/portage/dep.py b/pym/portage/dep.py index a1908276..bd9b1967 100644 --- a/pym/portage/dep.py +++ b/pym/portage/dep.py @@ -393,12 +393,15 @@ class _use_dep(object): return _use_dep(tokens) class _AtomCache(type): - atoms = {} + """ + Cache Atom instances from constructor calls and reuse + identical instances when available. + """ def __call__(cls, s): - instance = cls.atoms.get(s) + instance = cls._atoms.get(s) if instance is None: instance = super(_AtomCache, cls).__call__(s) - cls.atoms[s] = instance + cls._atoms[s] = instance return instance class Atom(object): @@ -409,6 +412,7 @@ class Atom(object): """ __metaclass__ = _AtomCache + _atoms = {} _str_methods = ("endswith", "find", "index", "lstrip", "replace", "startswith", "strip", "rindex", "rfind", "rstrip", "__getitem__", |