Mercurial > hg-stable
changeset 16825:b6ef1395d77f
revset: avoid validating all tag nodes for tag(x)
This generally causes the entire node->rev table to get built when
we're only interested in one node.
| author | Matt Mackall <mpm@selenic.com> |
|---|---|
| date | Fri, 01 Jun 2012 15:13:05 -0500 |
| parents | f3b8c82a559c |
| children | 8abee656e14c |
| files | mercurial/revset.py |
| diffstat | 1 files changed, 4 insertions(+), 2 deletions(-) [+] |
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--- a/mercurial/revset.py Wed May 30 23:14:04 2012 +0100 +++ b/mercurial/revset.py Fri Jun 01 15:13:05 2012 -0500 @@ -1214,9 +1214,11 @@ _('the argument to tag must be a string')) kind, pattern, matcher = _stringmatcher(pattern) if kind == 'literal': - if not repo.tags().get(pattern, None): + # avoid resolving all tags + tn = repo._tagscache.tags.get(pattern, None) + if tn is None: raise util.Abort(_("tag '%s' does not exist") % pattern) - s = set([cl.rev(n) for t, n in repo.tagslist() if t == pattern]) + s = set([repo[tn].rev()]) else: s = set([cl.rev(n) for t, n in repo.tagslist() if matcher(t)]) if not s: