`test_init_load_non_utf8_path` and
`test_init_additional_workspace_non_utf8_path` now early-return on
strict UTF-8 filesystems because there's no way to report a test as
"skipped" at runtime.
Closes https://github.com/jj-vcs/jj/issues/8118
After the previous commit, `MergedTree` and `MergedTreeId` are almost
identical, with the only difference being that `MergedTree` is attached
to a `Store` instance. `MergedTreeId` is also equivalent to
`Merge<TreeId>`, since it is just a wrapper around it.
In the future, `MergedTree` might contain additional metadata like
conflict labels. Therefore, I replaced `MergedTreeId` with `MergedTree`
wherever I think it would be required to pass this additional metadata,
or where the additional methods provided by `MergedTree` would be
useful. In any remaining places, I replaced it with `Merge<TreeId>`.
I also renamed some of the `tree_id()` methods to `tree_ids()` for
consistency, since now they return a merge of individual tree IDs
instead of a single "merged tree ID". Similarly, `MergedTree` no longer
has an `id()` method, since tree IDs won't fully identify a `MergedTree`
once it contains additional metadata.
There are two major goals:
1. garbage-collect predecessor commits referenced by immutable commits.
2. show operations alongside predecessors in "jj evolog".
The predecessors field will be removed from the Commit object. Maybe we can
also remove (writer side of) the extras table from GitBackend.
"jj evolog" will traverse the operation history to build an evolution
graph. This will be slower than the current implementation, but it seems
tolerable for mid-size repository stored in a local disk.
(when the page cache is warm)
% time jj op log -T'"."' --no-graph | wc -c
50459
jj op log -T'"."' --no-graph 0.12s user 0.31s system 103% cpu 0.418 total
Suppose we're interested in recent modifications, the traversal can often be
terminate early. I also have an idea for indexing originating operations.
https://github.com/jj-vcs/jj/pull/6405
For old operations which didn't record predecessors, "jj evolog" will fall back
to commit.predecessor_ids(). That's why commit_predecessors is Option<_>.
I think this makes more sense because WorkspaceId is currently a human-readable
name. In error/status messages, workspace names are now printed in revset
syntax.
New WorkspaceId types do not implement Default. It would be weird if string-like
type had non-empty Default::default(). The DEFAULT constant is provided instead.
It's nice that "jj config list --include-defaults" can show these default
values.
I just copied the jj-cli directory structure, but it's unlikely we'll add more
config/*.toml files.
These paths may be printed, compared with user inputs, or passed to external
programs. It's probably better to avoid unusual "\\?\C:\" paths on Windows.
Fixes#5143
UserSettings::get_*() will be changed to look up a merged value from
StackedConfig, not from a merged config::Value. This will help migrate away
from the config crate.
Not all tests are ported to ConfigLayer::parse() because it seemed a bit odd
to format!() a TOML document and parse it to build a table of configuration
variables.
When loading repos on a server, there is no repo path. We currently
use a placeholder at Google. This patch will let us not do that.
I think we can remove the paths from `Workspace` too, but I'll leave
that for later, if at all.
We had both `repo()` and `mut_repo()` on `Transaction` and I think it
was easy to get confused and think that the former returned a
`&ReadonlyRepo` but both of them actually return a reference to
`MutableRepo` (the latter obviously returns a mutable reference). I
hope that renaming to the more idiomatic `repo_mut()` will help
clarify.
We could instead have renamed them to `mut_repo()` and
`mut_repo_mut()` but that seemed unnecessarily long. It would better
match the `mut_repo` variables we typically use, though.
It seems better to have the caller pass the transaction description
when we finish the transaction than when we start it. That way we have
all the information we want to include more readily available.
One less git2 API use in CLI.
The function name GitBackend::init_colocated() is a bit odd, but we need to
specify the work-tree path, not the ".git" repo path. So we can't eliminate
the notion of the working copy path anyway.
It makes the call sites clearer if we pass the `TestRepoBackend` enum
instead of the boolean `use_git` value. It's also more extensible (I
plan to add another backend for tests).
Many (most?) callers of `Store::empty_tree_id()` really want a
`MergedTreeId`, so let's create a helper for that. It returns the
`Legacy` variant, which is what all current callers used. That should
be all we need since the two variants compare equal these days, and
since trees built based on the legacy variant can get promoted to the
new variant on write if the config is enabled.
This commit replaces the functions `UserSettings::user_name_placeholder()`` and
`UserSettings::user_email_placeholder()` with `const` `&str`s to emphasize that
the placeholder strings must not be changed to support commits without
names or email addresses made before this change.
Almost everyone calls the project "jj", and there seeems to be
consensus that we should rename the crates. I originally wanted the
crates to be called `jj` and `jj-lib`, but `jj` was already
taken. `jj-cli` is probably at least as good for it anyway.
Once we've published a 0.8.0 under the new names, we'll release 0.7.1
versions under the old names with pointers to the new crates names.
This has several advantages:
* Makes it possible to downcast to non-Git custom backends (might be
useful at Google, but we haven't needed it yet)
* Lets us access more specific functionality on the `GitBackend`,
making it possible to access the `git2::Repository` without
creating a copy of it.
* Removes the dependency on Git from the backend
I've preferred "working-copy commit" over "checkout" for a while
because I think it's clearer, but there were lots of places still
using "checkout". I've left "checkout" in places where it refers to
the action of updating the working copy or the working-copy commit.
We already have `create_random_commit()`, which returns a
`CommitBuilder`. Most callers directly write that to a
`MutableRepo`. That currently returns a `Commit`, but I'm about to
make it propagate errors from the backend. That would add an
`unwrap()` to this sequence, making it longer. Let's create a simple
helper for these callers to simplify this common pattern.
When you're done with the `CommitBuilder`, you're going to have to
call `write_to_repo()`, passing it a mutable `MutableRepo`
reference. It's a bit simpler to pass that reference when we create
the `CommitBuilder` instead, so that's what this patch does.
A drawback of passing in the mutable reference when we create the
builder is that we can't have multiple unfinished `CommitBuilder`
instance live at the same time. We don't have any such use cases yet,
and it's not hard to work around them, so I think this change is worth
it.
Let's acknowledge everyone's contributions by replacing "Google LLC"
in the copyright header by "The Jujutsu Authors". If I understand
correctly, it won't have any legal effect, but maybe it still helps
reduce concerns from contributors (though I haven't heard any
concerns).
Google employees can read about Google's policy at
go/releasing/contributions#copyright.
We currently get the hostname and username from the `whoami` crate. We
do that in lib crate, without giving the caller a way to override
them. That seems wrong since it might be used in a server and
performing operations on behalf of some other user. This commit makes
the hostname and username configurable, so the calling crate can pass
them in. If they have not been passed in, we still default to the
values from the `whoami` crate.
These calls often appear in expressions long enough that not having to
qualify it means that we can sometimes avoid wrapping a line. I
noticed because IntelliJ told me that `test_git.rs` had some
unnecessary qualificiations (the function was already imported there).
The `testutils` module should ideally not be part of the library
dependencies. Since they're used by the integration tests (and the CLI
tests), we need to move them to a separate crate to achieve that.
In many of these places, we don't need an owned value, so using a
reference means we don't force the caller to clone the value. I really
doubt it will have any noticeable impact on performance (I think these
are all once-per-repo paths); it's just a little simpler this way.
This moves the logic for handling the root commit when writing commits
from `CommitBuilder` into the individual backends. It always bothered
me a bit that the `commit::Commit` wrapper had a different idea of the
number of parents than the wrapped `backend::Commit` had.
With this change, the `LocalBackend` will now write the root commit in
the list of parents if it's there in the argument to
`write_commit()`. Note that root commit itself won't be written. The
main argument for not writing it is that we can then keep the fake
all-zeros hash for it. One argument for writing it, if we were to do
so, is that it would make the set of written objects consistent, so
any future processing of them (such as GC) doesn't have to know to
ignore the root commit in the list of parents.
We still treat the two backends the same, so the user won't be allowed
to create merges including the root commit even when using the
`LocalBackend`.
`wc_commit` seems clearer than `checkout` and not too much longer. I
considered `working_copy` but it was less clear (could be the path to
the working copy, or an instance of `WorkingCopy`). I also considered
`working_copy_commit`, but that seems a bit too long.
