Follow-up to https://github.com/zed-industries/zed/pull/2777
Refs https://github.com/zed-industries/community/issues/1770
In this PR, I reworked the way that git statuses are retrieved. In a
huge repository like `WebKit`, the really slow part of computing a list
of git statuses is the *unstaged* portion of the diff. For the *staged*
diff, `git` can avoid comparing the contents of unchanged directories,
because the index contains hashes of every tree. But for the *unstaged*
portion, Git needs to compare every file in the worktree against the
index. In the common case, when there are no changes, it's enough to
check the `mtime` of every file (because the index stores the mtimes of
files when they are added). But this still requires an `lstat` call to
retrieve each file's metadata.
I realized that this is redundant work, because the worktree is
*already* calling `lstat` on every file, and caching their metadata. So
in this PR, I've changed the `Repository` API so that there are separate
methods for retrieving a file's *staged* and *unstaged* statuses. The
*staged* statuses are retrieved in one giant batch, like before, to
reduce our git calls (which also have an inherent cost). But the
`unstaged` statuses are retrieved one-by-one, after we load files'
mtimes. Often, all that's required is an index lookup, and an mtime
comparison.
With this optimization, it once again becomes pretty responsive to open
`WebKit` or `chromium` in Zed.
Release Notes:
- Optimized the loading of project file when working in very large git
repositories
Deals with https://github.com/zed-industries/community/issues/752
Deals with https://github.com/zed-industries/community/issues/566
Currently, when converting from LSP to Zed objects, completions with
non-empty `additional_text_edits` are filtered out.
Later, all other completions form a list and the selected one gets the
`Editor::confirm_completion` call, which always queries an LSP
completion resolve request to get the `additional_text_edits` field.
Otherwise, `additional_text_edits` field is ignored entirely for the
rest of the completion lifetime — and we always pass the selected
completion through the resolve request.
The PR changes the logic, removing the `additional_text_edits` filtering
and instead of resolving every completion, now we check for
`additional_text_edits` in the completion before resolving: resolve
happens only if the data is absent.
Generally, feels like resolve has to happen before the completion
selection: LSP servers may send us markdown for completion documentation
preview pop ups and similar extra info.
Also, the server may lack resolve capabilities entirely, always sending
the request seems dangerous.
For now, the PR does not attempt to change either.
Release Notes:
- Brings rust-analyzer's postfix completions and others completions with
preresolved additional text edits
Instead of storing `initialization_options` in every LSP adapter as
before, store previous LSP settings in `Project` entirely.
This way, we can later have use multiple different project
configurations per single LSP with its associated adapter.
co-authored-by: Max Brunsfeld <max@zed.dev>
Language servers mixed `initialization_options` from hardcodes and user
settings, fix that to ensure we restart servers on their settings
changes only.
Language servers such as typescript-language-servers report a single
work event, ending right after server's startup.
Other servers might send more similar event, also during startup.
The rest of the events are diagnostic-related and we filter them out.
React on such events with /refresh-like hint update, that will check
only the visible part of the editor for hints and might be replaced by
other /refresh requests, if needed.
As part of an optimization in
https://github.com/zed-industries/zed/pull/2663, I changed the way that
the worktree ignores FS events within unloaded directories. But this
accidentally prevented us from detecting some events that occur inside
of `.git` directories.
In this PR, I've made further tweaks to which FS events we can ignore.
We now explicitly opt *in* to scanning `.git` (shallowly) directories
(even though they are ignored). Note that we still don't recursively
scan the git directory (including all of the files inside `objects`
etc). This seems like the correct amount of work to do, and from my
testing (and our unit tests that use the real FS and real git
repositories), it seems to work correctly.
Release Notes:
- Fixed a bug where Zed would not detect some git repository changes
(preview only).
Kirill Bulatov