changelog: lazily parse date/extra field
This is probably the most complicated patch in the parsing
refactor.
Because the date and extras are encoded in the same field, we
stuff the entire field into a dedicated variable and add a
property for accessing the sub-components of each. There is
some duplicated code here. But the code is relatively simple,
so it shouldn't be a big deal.
We see revset performance wins across the board:
author(mpm)
0.896565
0.876713
0.822961
desc(bug)
0.887169
0.895514
0.847054
date(2015)
0.878797
0.820987
0.811613
extra(rebase_source)
0.865446
0.823811
0.797756
author(mpm) or author(greg)
1.801832
1.784160
1.668172
author(mpm) or desc(bug)
1.812438
1.822756
1.677608
date(2015) or branch(default)
0.968276
0.910981
0.896032
author(mpm) or desc(bug) or date(2015) or extra(rebase_source)
3.656193
3.516788
3.265024
We see a speed-up on revsets accessing date and extras because the new
parsing code only parses what you access. Even though they are stored
the same text field, we avoid parsing dates when accessing extras and
vice-versa.
But strangely revsets accessing both date and extras appeared to speed
up as well! I'm not sure if this is due to refactoring the parsing
code or due to an optimization in revsets. You can't argue with the
results!
#require execbit
$ rm -rf a
$ hg init a
$ cd a
$ echo foo > foo
$ hg ci -qAm0
$ echo toremove > toremove
$ echo todelete > todelete
$ chmod +x foo toremove todelete
$ hg ci -qAm1
Test that local removed/deleted, remote removed works with flags
$ hg rm toremove
$ rm todelete
$ hg co -q 0
$ echo dirty > foo
$ hg up -c
abort: uncommitted changes
[255]
$ hg up -q
$ cat foo
dirty
$ hg st -A
M foo
C todelete
C toremove
Validate update of standalone execute bit change:
$ hg up -C 0
1 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ chmod -x foo
$ hg ci -m removeexec
nothing changed
[1]
$ hg up -C 0
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg up
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg st
$ cd ..