Mercurial > public > mercurial-scm > hg-stable
comparison mercurial/context.py @ 17173:c621f84dbb35
obsolete: compute extinct changesets
`extinct` changesets are obsolete changesets with obsolete descendants only. They
are of no interest anymore and can be:
- exclude from exchange
- hidden to the user in most situation
- safely garbage collected
This changeset just allows mercurial to detect them.
The implementation is a bit naive, as for unstable changesets. We better use a
simple revset query and a cache, but simple version comes first.
| author | Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
|---|---|
| date | Fri, 06 Jul 2012 19:34:09 +0200 |
| parents | 9c750c3e4fac |
| children | 62c56c94c77e |
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| 17172:12fdaa30063a | 17173:c621f84dbb35 |
|---|---|
| 233 def obsolete(self): | 233 def obsolete(self): |
| 234 """True if the changeset is obsolete""" | 234 """True if the changeset is obsolete""" |
| 235 return (self.node() in self._repo.obsstore.precursors | 235 return (self.node() in self._repo.obsstore.precursors |
| 236 and self.phase() > phases.public) | 236 and self.phase() > phases.public) |
| 237 | 237 |
| 238 def extinct(self): | |
| 239 """True if the changeset is extinct""" | |
| 240 # We should just compute a cache a check againts it. | |
| 241 # see revset implementation for details | |
| 242 # | |
| 243 # But this naive implementation does not require cache | |
| 244 if self.phase() <= phases.public: | |
| 245 return False | |
| 246 if not self.obsolete(): | |
| 247 return False | |
| 248 for desc in self.descendants(): | |
| 249 if not desc.obsolete(): | |
| 250 return False | |
| 251 return True | |
| 252 | |
| 238 def unstable(self): | 253 def unstable(self): |
| 239 """True if the changeset is not obsolete but it's ancestor are""" | 254 """True if the changeset is not obsolete but it's ancestor are""" |
| 240 # We should just compute /(obsolete()::) - obsolete()/ | 255 # We should just compute /(obsolete()::) - obsolete()/ |
| 241 # and keep it in a cache. | 256 # and keep it in a cache. |
| 242 # | 257 # |