We use `heads_ok()` for finding the head operations when there are
multiple current op heads. The current DFS-based algortihm needs to
always walk all the way to the root. That can be expensive when the
operations are slow to retrieve. In the common case where there are
two operations close to each other in the graph, we should be able to
terminate the search once we've reached the common ancestor. This
patch replaces the DFS by a BFS and adds the early termination.
This allows users to easily filter a commit range by conflicts, which will be needed for `next/prev`
further down in the next commit. Users which benefit from it were also migrated.
The error message that says something like 'Workspace "default"
doesn't have a working copy' confused me when I saw it. The problem
it's describing is that the repo view doesn't have a working-copy
commit for the given workspace id. Saying "working-copy commit"
instead of "working copy" hopefully clarifies it a bit.
The function has no callers outside the module anymore (probably since
`MaterializeTreeValue` but I haven't checked). Inlining it will help
keep error handling simple in the next commit. Otherwise we'd need to
have it return an error type wrapping both `BackendError` and
`io::Error`.
I don't think the message adds anything over what the `BackendError`
itself provides, so let's use `transparent` instead.
I also dropped the `Internal` prefix from the variant because that
also didn't seem to add anything.
- make an internal set of watchman extensions until the client api gets
updates with triggers
- add a config option to enable using triggers in watchman
Co-authored-by: Waleed Khan <me@waleedkhan.name>
Still alias function shadows builtin function (of any arity) by name. This
allows to detect argument error as such, but might be a bit inconvenient if
user wants to overload heads() for example. If needed, maybe we can add some
config/revset syntax to import builtin function to alias namespace.
The functions table is keyed by name, not by (name, arity) pair. That's mainly
because std collections require keys to be Borrow, and a pair of borrowed
values is incompatible with owned pair. Another reason is it makes easy to look
up overloads by name.
Alias overloading could also be achieved by adding default parameters, but that
will complicate the implementation a bit more, and can't prevent shadowing of
0-ary immutable_heads().
Closes#2966
I'm going to add arity-based alias overloading, and we'll need function
(name, arity) pair to identify it in alias expansion stack. The exact parameter
names aren't necessary, but they can be embedded in error messages.
I've wanted to make the Git support optional for a long time. However,
since everyone uses the Git backend (and we want to support it even in
the custom binary at Google), there hasn't been much practical reason
to make Git support optional.
Since we now use jj-lib on the server at Google, it does make sense to
have the server not include Git support. In addition to making the
server binary smaller, it would make it easier for us (jj team at
Googlle) to prove that our server is not affected by some libgit2 or
Gitoxide vulnerability. But to be honest, neither of those problems
have come up, so it's more of an excuse to make the Git support
optional at this point.
It turned out to be much simpler than I expected to make Git support
in the lib crate optional. We have done a pretty good job of keeping
Git-related logic separated there.
If we make Git support optional in the lib crate, it's going to make
it a bit harder to move logic from the CLI crate into the lib crate
(as we have planned to do). Maybe that's good, though, since it helps
remind us to keep Git-related logic separated.
It's been more than 6 months since we added support for dynamically
selecting the working copy implementation. This patch drops support
for selecting the default implementation of that and other stores.
This will hopefully help remove PartialEq from RevsetExpression. Some assertions
are duplicated so that AST->RevsetExpression transformation is covered by tests.
As we discovered in the `jj fix` tests,
`MergedTreeBuilder::write_tree()` doesn't try to resolve conflicts,
not even trivial ones. This patch fixes that.
This changes the documented behavior of `resolve()` since it was
previously documented to not change the arity unless all conflicts
were resolved.
I plan to use `resolve()` from `MergedTreeBuilder::write_tree()`.
The current implementation of `resolve()` on legacy trees just
pretended any conflicts were regular files. It's better to error
out. The function is only used in tests so far.
The goal is to remove special case from parsing functions and provide slightly
better error message. I don't know if we'd want to use "all:" in aliases, but
there are no strong reasons to disable it.
This simplifies the interface of helper functions. While revset doesn't have
top-level string pattern or integer literal, these parsing helpers could be
used to parse array subscript or n-th parent operator if any.
This patch copies function rule processing from templater and fileset. Since
function and identifier rules are quite different, it's better to not rely on
the subtle difference between identifier and function_name tokens.
