Mercurial > hg-stable
changeset 18306:06185554e7e3
changelog: add a `branch` method, bypassing changectx
The only way to access the branch of a changeset is currently to
create a changectx object and access its `branch()` method. Creating
a new Python object is costly and has a huge impact on code doing
heavy access to `branch()` (like branchmap).
This change introduces a new method on changelog that allows direct
access to the branch of a revision. See the next changeset for impact.
| author | Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
|---|---|
| date | Thu, 10 Jan 2013 00:41:40 +0100 |
| parents | 2502a15e033d |
| children | 0eed2546118a |
| files | mercurial/changelog.py |
| diffstat | 1 files changed, 7 insertions(+), 0 deletions(-) [+] |
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--- a/mercurial/changelog.py Tue Jan 08 01:28:39 2013 +0100 +++ b/mercurial/changelog.py Thu Jan 10 00:41:40 2013 +0100 @@ -337,3 +337,10 @@ l = [hex(manifest), user, parseddate] + sorted(files) + ["", desc] text = "\n".join(l) return self.addrevision(text, transaction, len(self), p1, p2) + + def branch(self, rev): + """return the branch of a revision + + This function exists because creating a changectx object + just to access this is costly.""" + return encoding.tolocal(self.read(rev)[5].get("branch"))