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| author | Zac Medico <zmedico@gentoo.org> | 2010-07-25 12:11:19 -0700 |
|---|---|---|
| committer | Zac Medico <zmedico@gentoo.org> | 2010-07-25 12:11:19 -0700 |
| commit | 636951ccdc6eeddf7776ef2ebcffbeb212fc9b46 (patch) | |
| tree | 738f118f289bec6f75dce0470ab07d0fff34c668 | |
| parent | 9caa9b5a7a84c7288f9cda98a4ecf85d10aa30c1 (diff) | |
| download | portage-636951ccdc6eeddf7776ef2ebcffbeb212fc9b46.tar.gz portage-636951ccdc6eeddf7776ef2ebcffbeb212fc9b46.tar.bz2 portage-636951ccdc6eeddf7776ef2ebcffbeb212fc9b46.zip | |
Make extended_cp_match() cache regular expressions for re-use.
| -rw-r--r-- | pym/portage/dep/__init__.py | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/pym/portage/dep/__init__.py b/pym/portage/dep/__init__.py index 80e2b4c78..9720a510e 100644 --- a/pym/portage/dep/__init__.py +++ b/pym/portage/dep/__init__.py @@ -754,14 +754,20 @@ class Atom(_atom_base): memo[id(self)] = self return self +_extended_cp_re_cache = {} + def extended_cp_match(extended_cp, other_cp): """ Checks if an extended syntax cp matches a non extended cp """ # Escape special '+' and '.' characters which are allowed in atoms, # and convert '*' to regex equivalent. - extended_cp_re = re.compile("^" + extended_cp.replace("+", r"\+").replace( - ".", r"\.").replace('*', '[^/]*') + "$") + global _extended_cp_re_cache + extended_cp_re = _extended_cp_re_cache.get(extended_cp) + if extended_cp_re is None: + extended_cp_re = re.compile("^" + extended_cp.replace( + "+", r"\+").replace(".", r"\.").replace('*', '[^/]*') + "$") + _extended_cp_re_cache[extended_cp] = extended_cp_re return extended_cp_re.match(other_cp) is not None class ExtendedAtomDict(object): |