phases: mechanism to allow extension to alter initial computation of phase
This commit add a whennodata list where extension can register a callback to be
called if no phase related data are found in the repository.
The goal is to ensure the existing extension that move phase data in 2.1 can
compute consistent phase boundary for existing repo.
--- a/mercurial/localrepo.py Wed Jan 18 17:11:27 2012 +0100
+++ b/mercurial/localrepo.py Wed Jan 18 17:23:54 2012 +0100
@@ -37,6 +37,10 @@
self.baseui = baseui
self.ui = baseui.copy()
self._dirtyphases = False
+ # A list of callback to shape the phase if no data were found.
+ # Callback are in the form: func(repo, roots) --> processed root.
+ # This list it to be filled by extension during repo setup
+ self._phasedefaults = []
try:
self.ui.readconfig(self.join("hgrc"), self.root)
--- a/mercurial/phases.py Wed Jan 18 17:11:27 2012 +0100
+++ b/mercurial/phases.py Wed Jan 18 17:23:54 2012 +0100
@@ -109,7 +109,6 @@
def readroots(repo):
"""Read phase roots from disk"""
roots = [set() for i in allphases]
- roots[0].add(nullid)
try:
f = repo.sopener('phaseroots')
try:
@@ -121,6 +120,8 @@
except IOError, inst:
if inst.errno != errno.ENOENT:
raise
+ for f in repo._phasedefaults:
+ roots = f(repo, roots)
return roots
def writeroots(repo):
--- a/mercurial/statichttprepo.py Wed Jan 18 17:11:27 2012 +0100
+++ b/mercurial/statichttprepo.py Wed Jan 18 17:23:54 2012 +0100
@@ -86,6 +86,7 @@
opener = build_opener(ui, authinfo)
self.opener = opener(self.path)
+ self._phasedefaults = []
try:
requirements = scmutil.readrequires(self.opener, self.supported)