rust-index: using the `hg::index::Index` in ancestors iterator and lazy set
Since there is no Rust implementation for REVLOGV2/CHANGELOGv2, we declare
them to be incompatible with Rust, hence indexes in these formats will use
the implementations from Python `mercurial.ancestor`. If this is an unacceptable
performance hit for current users of these formats, we can later on add Rust
implementations based on the C index for them or implement these formats for
the Rust indexes.
Among the challenges that we had to meet, we wanted to avoid taking the GIL each
time the inner (vcsgraph) iterator has to call the parents function. This would probably
still be acceptable in terms of performance with `AncestorsIterator`, but not with
`LazyAncestors` nor for the upcoming change in `MissingAncestors`.
Hence we enclose the reference to the index in a `PySharedRef`, leading to more
rigourous checking of mutations, which does pass now that there no logically immutable
methods of `hg::index::Index` that take a mutable reference as input.
$ mkdir part1
$ cd part1
$ hg init
$ echo a > a
$ hg add a
$ hg commit -m "1"
$ hg status
$ hg copy a b
$ hg --config ui.portablefilenames=abort copy a con.xml
abort: filename contains 'con', which is reserved on Windows: con.xml
[10]
$ hg status
A b
$ hg sum
parent: 0:c19d34741b0a tip
1
branch: default
commit: 1 copied
update: (current)
phases: 1 draft
$ hg --debug commit -m "2"
committing files:
b
b: copy a:b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3
committing manifest
committing changelog
updating the branch cache
committed changeset 1:93580a2c28a50a56f63526fb305067e6fbf739c4
we should see two history entries
$ hg history -v
changeset: 1:93580a2c28a5
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: b
description:
2
changeset: 0:c19d34741b0a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: a
description:
1
we should see one log entry for a
$ hg log a
changeset: 0:c19d34741b0a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 1
this should show a revision linked to changeset 0
$ hg debugindex a
rev linkrev nodeid p1-nodeid p2-nodeid
0 0 b789fdd96dc2 000000000000 000000000000
we should see one log entry for b
$ hg log b
changeset: 1:93580a2c28a5
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 2
this should show a revision linked to changeset 1
$ hg debugindex b
rev linkrev nodeid p1-nodeid p2-nodeid
0 1 37d9b5d994ea 000000000000 000000000000
this should show the rename information in the metadata
$ hg debugdata b 0 | head -3 | tail -2
copy: a
copyrev: b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3
#if reporevlogstore
$ md5sum.py .hg/store/data/b.i
44913824c8f5890ae218f9829535922e .hg/store/data/b.i
#endif
$ hg cat b > bsum
$ md5sum.py bsum
60b725f10c9c85c70d97880dfe8191b3 bsum
$ hg cat a > asum
$ md5sum.py asum
60b725f10c9c85c70d97880dfe8191b3 asum
$ hg verify -q
$ cd ..
$ mkdir part2
$ cd part2
$ hg init
$ echo foo > foo
should fail - foo is not managed
$ hg mv foo bar
foo: not copying - file is not managed
abort: no files to copy
(maybe you meant to use --after --at-rev=.)
[10]
$ hg st -A
? foo
respects ui.relative-paths
$ mkdir dir
$ cd dir
$ hg mv ../foo ../bar
../foo: not copying - file is not managed
abort: no files to copy
(maybe you meant to use --after --at-rev=.)
[10]
$ hg mv ../foo ../bar --config ui.relative-paths=yes
../foo: not copying - file is not managed
abort: no files to copy
(maybe you meant to use --after --at-rev=.)
[10]
$ hg mv ../foo ../bar --config ui.relative-paths=no
foo: not copying - file is not managed
abort: no files to copy
(maybe you meant to use --after --at-rev=.)
[10]
$ cd ..
$ rmdir dir
$ hg add foo
dry-run; print a warning that this is not a real copy; foo is added
$ hg mv --dry-run foo bar
foo has not been committed yet, so no copy data will be stored for bar.
$ hg st -A
A foo
should print a warning that this is not a real copy; bar is added
$ hg mv foo bar
foo has not been committed yet, so no copy data will be stored for bar.
$ hg st -A
A bar
should print a warning that this is not a real copy; foo is added
$ hg cp bar foo
bar has not been committed yet, so no copy data will be stored for foo.
$ hg rm -f bar
$ rm bar
$ hg st -A
A foo
$ hg commit -m1
moving a missing file
$ rm foo
$ hg mv foo foo3
foo: deleted in working directory
foo3 does not exist!
$ hg up -qC .
copy --after to a nonexistent target filename
$ hg cp -A foo dummy
foo: not recording copy - dummy does not exist
[1]
dry-run; should show that foo is clean
$ hg copy --dry-run foo bar
$ hg st -A
C foo
should show copy
$ hg copy foo bar
$ hg st -C
A bar
foo
shouldn't show copy
$ hg commit -m2
$ hg st -C
should match
$ hg debugindex foo
rev linkrev nodeid p1-nodeid p2-nodeid
0 0 2ed2a3912a0b 000000000000 000000000000
$ hg debugrename bar
bar renamed from foo:2ed2a3912a0b24502043eae84ee4b279c18b90dd
$ echo bleah > foo
$ echo quux > bar
$ hg commit -m3
should not be renamed
$ hg debugrename bar
bar not renamed
$ hg copy -f foo bar
should show copy
$ hg st -C
M bar
foo
XXX: filtering lfilesrepo.status() in 3.3-rc causes the copy source to not be
displayed.
$ hg st -C --config extensions.largefiles=
The fsmonitor extension is incompatible with the largefiles extension and has been disabled. (fsmonitor !)
M bar
foo
$ hg commit -m3
should show no parents for tip
$ hg debugindex bar
rev linkrev nodeid p1-nodeid p2-nodeid
0 1 7711d36246cc 000000000000 000000000000
1 2 bdf70a2b8d03 7711d36246cc 000000000000
2 3 b2558327ea8d 000000000000 000000000000
should match
$ hg debugindex foo
rev linkrev nodeid p1-nodeid p2-nodeid
0 0 2ed2a3912a0b 000000000000 000000000000
1 2 dd12c926cf16 2ed2a3912a0b 000000000000
$ hg debugrename bar
bar renamed from foo:dd12c926cf165e3eb4cf87b084955cb617221c17
should show no copies
$ hg st -C
note: since filelog based copy tracing only trace copy for new file, the copy information here is not displayed.
$ hg status --copies --change .
M bar
They are a devel option to walk all file and fine this information anyway.
$ hg status --copies --change . --config devel.copy-tracing.trace-all-files=yes
M bar
foo
copy --after on an added file
$ cp bar baz
$ hg add baz
$ hg cp -A bar baz
$ hg st -C
A baz
bar
foo was clean:
$ hg st -AC foo
C foo
Trying to copy on top of an existing file fails,
$ hg copy -A bar foo
foo: not overwriting - file already committed
('hg copy --after --force' to replace the file by recording a copy)
[1]
same error without the --after, so the user doesn't have to go through
two hints:
$ hg copy bar foo
foo: not overwriting - file already committed
('hg copy --force' to replace the file by recording a copy)
[1]
but it's considered modified after a copy --after --force
$ hg copy -Af bar foo
$ hg st -AC foo
M foo
bar
The hint for a file that exists but is not in file history doesn't
mention --force:
$ touch xyzzy
$ hg cp bar xyzzy
xyzzy: not overwriting - file exists
('hg copy --after' to record the copy)
[1]
$ hg co -qC .
$ rm baz xyzzy
Test unmarking copy/rename of a single file
# Set up by creating a copy
$ hg cp bar baz
# Test unmarking as copy a non-existent file
$ hg copy --forget non-existent
non-existent: $ENOENT$
$ hg rename --forget non-existent
non-existent: $ENOENT$
# Test unmarking as copy an tracked but unrelated file
$ hg copy --forget foo
foo: not unmarking as copy - file is not marked as copied
$ hg rename --forget foo
foo: not unmarking as copy - file is not marked as copied
# Test unmarking as copy a copy source
$ hg copy --forget bar
bar: not unmarking as copy - file is not marked as copied
$ hg rename --forget bar
bar: not unmarking as copy - file is not marked as copied
# baz should still be marked as a copy
$ hg st -C
A baz
bar
# Test the normal case
$ hg copy --forget baz
$ hg st -C
A baz
$ rm bar
$ hg rename --after bar baz
$ hg st -C
A baz
bar
R bar
$ hg rename --forget baz
$ hg st -C
A baz
R bar
$ hg revert bar
# Test unmarking as copy with matching an non-matching patterns
$ hg cp bar baz --after
$ hg copy --forget bar baz
bar: not unmarking as copy - file is not marked as copied
$ hg cp bar baz --after
$ hg rename --forget bar baz
bar: not unmarking as copy - file is not marked as copied
$ hg st -C
A baz
# Test unmarking as copy with no exact matches
$ hg cp bar baz --after
$ hg copy --forget .
$ hg st -C
A baz
$ hg cp bar baz --after
$ hg st -C
A baz
bar
$ hg rename --forget .
$ hg st -C
A baz
$ hg forget baz
$ rm baz
Test unmarking copy of a directory
$ mkdir dir
$ echo foo > dir/foo
$ echo bar > dir/bar
$ hg add dir
adding dir/bar
adding dir/foo
$ hg ci -m 'add dir/'
$ hg cp dir dir2
copying dir/bar to dir2/bar
copying dir/foo to dir2/foo
$ touch dir2/untracked
$ hg copy --forget dir2
$ hg st -C
A dir2/bar
A dir2/foo
? dir2/untracked
# Clean up for next test
$ hg forget dir2
removing dir2/bar
removing dir2/foo
$ rm -r dir2
Test uncopy on committed copies
# Commit some copies
$ hg cp bar baz
$ hg cp bar qux
$ hg ci -m copies
$ hg st -C --change .
A baz
bar
A qux
bar
$ base=$(hg log -r '.^' -T '{rev}')
$ hg log -G -T '{rev}:{node|short} {desc}\n' -r $base:
@ 5:a612dc2edfda copies
|
o 4:4800b1f1f38e add dir/
|
~
# Add a dirty change on top to show that it's unaffected
$ echo dirty >> baz
$ hg st
M baz
$ cat baz
bleah
dirty
$ hg copy --forget --at-rev . baz
saved backup bundle to $TESTTMP/part2/.hg/strip-backup/a612dc2edfda-e36b4448-uncopy.hg
# The unwanted copy is no longer recorded, but the unrelated one is
$ hg st -C --change .
A baz
A qux
bar
# The old commit is gone and we have updated to the new commit
$ hg log -G -T '{rev}:{node|short} {desc}\n' -r $base:
@ 5:c45090e5effe copies
|
o 4:4800b1f1f38e add dir/
|
~
# Working copy still has the uncommitted change
$ hg st
M baz
$ cat baz
bleah
dirty
$ cd ..