dagop: factor out pfunc from revancestors() generator
This generator will be reused for tracking descendants with depth limit.
# ancestors(tip) using hg repo
0) 0.065868
1) 0.068976
--- a/mercurial/dagop.py Fri Jun 23 21:15:10 2017 +0900
+++ b/mercurial/dagop.py Sat Jun 24 23:22:45 2017 +0900
@@ -38,6 +38,11 @@
raise error.ProgrammingError('negative stopdepth')
cl = repo.changelog
+ def pfunc(rev):
+ try:
+ return cl.parentrevs(rev)[:cut]
+ except error.WdirUnsupported:
+ return (pctx.rev() for pctx in repo[rev].parents()[:cut])
# load input revs lazily to heap so earlier revisions can be yielded
# without fully computing the input revs
@@ -65,14 +70,9 @@
yield currev
pdepth = curdepth + 1
if foundnew and pdepth < stopdepth:
- try:
- for prev in cl.parentrevs(currev)[:cut]:
- if prev != node.nullrev:
- heapq.heappush(pendingheap, (-prev, pdepth))
- except error.WdirUnsupported:
- for pctx in repo[currev].parents()[:cut]:
- if pctx.rev() != node.nullrev:
- heapq.heappush(pendingheap, (-pctx.rev(), pdepth))
+ for prev in pfunc(currev):
+ if prev != node.nullrev:
+ heapq.heappush(pendingheap, (-prev, pdepth))
def revancestors(repo, revs, followfirst, startdepth=None, stopdepth=None):
"""Like revlog.ancestors(), but supports additional options, includes