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Optimistically update hunk states when staging and unstaging hunks (#25687)

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This PR adds an optimistic update when staging or unstaging diff hunks.
In the process, I've also refactored the logic for staging and unstaging
hunks, to consolidate more of it in the `buffer_diff` crate.

I've also changed the way that we treat untracked files. Previously, we
maintained an empty diff for them, so as not to show unwanted
entire-file diff hunks in a regular editor. But then in the project diff
view, we had to account for this, and replace these empty diffs with
entire-file diffs. This form of state management made it more difficult
to store the pending hunks, so now we always use the same
`BufferDiff`/`BufferDiffSnapshot` for untracked files (with a single
hunk spanning the entire buffer), but we just have a special case in
regular buffers, that avoids showing that entire-file hunk.

* [x] Avoid creating a long queue of `set_index` operations when
staging/unstaging rapidly
* [x] Keep pending hunks when diff is recalculated without base text
changes
* [x] Be optimistic even when staging the single hunk in added/deleted
files
* Testing

Release Notes:

- N/A

---------

Co-authored-by: Cole Miller <m@cole-miller.net>
This commit is contained in:
Max Brunsfeld 2025-02-28 12:55:29 -08:00 • committed by GitHub
parent 9d8a163f5b
commit 0c2bbb3aa9
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GPG key ID: B5690EEEBB952194
14 changed files with 756 additions and 600 deletions
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70
crates/editor/src/editor.rs
View file

@ -52,7 +52,7 @@ pub use actions::{AcceptEditPrediction, OpenExcerpts, OpenExcerptsSplit};
use aho_corasick::AhoCorasick;
use anyhow::{anyhow, Context as _, Result};
use blink_manager::BlinkManager;
use buffer_diff::{DiffHunkSecondaryStatus, DiffHunkStatus};
use buffer_diff::DiffHunkStatus;
use client::{Collaborator, ParticipantIndex};
use clock::ReplicaId;
use collections::{BTreeMap, HashMap, HashSet, VecDeque};
@ -7720,11 +7720,6 @@ impl Editor {
cx: &mut Context<Editor>,
) {
let mut revert_changes = HashMap::default();
let snapshot = self.buffer.read(cx).snapshot(cx);
let Some(project) = &self.project else {
return;
};
let chunk_by = self
.snapshot(window, cx)
.hunks_for_ranges(ranges.into_iter())
@ -7735,15 +7730,7 @@ impl Editor {
for hunk in &hunks {
self.prepare_restore_change(&mut revert_changes, hunk, cx);
}
Self::do_stage_or_unstage(
project,
false,
buffer_id,
hunks.into_iter(),
&snapshot,
window,
cx,
);
self.do_stage_or_unstage(false, buffer_id, hunks.into_iter(), window, cx);
}
drop(chunk_by);
if !revert_changes.is_empty() {
@ -7788,7 +7775,6 @@ impl Editor {
let original_text = diff
.read(cx)
.base_text()
.as_ref()?
.as_rope()
.slice(hunk.diff_base_byte_range.clone());
let buffer_snapshot = buffer.snapshot();
@ -13524,7 +13510,7 @@ impl Editor {
snapshot: &MultiBufferSnapshot,
) -> bool {
let mut hunks = self.diff_hunks_in_ranges(ranges, &snapshot);
hunks.any(|hunk| hunk.secondary_status != DiffHunkSecondaryStatus::None)
hunks.any(|hunk| hunk.status().has_secondary_hunk())
}
pub fn toggle_staged_selected_diff_hunks(
@ -13565,15 +13551,11 @@ impl Editor {
cx: &mut Context<Self>,
) {
let snapshot = self.buffer.read(cx).snapshot(cx);
let Some(project) = &self.project else {
return;
};
let chunk_by = self
.diff_hunks_in_ranges(&ranges, &snapshot)
.chunk_by(|hunk| hunk.buffer_id);
for (buffer_id, hunks) in &chunk_by {
Self::do_stage_or_unstage(project, stage, buffer_id, hunks, &snapshot, window, cx);
self.do_stage_or_unstage(stage, buffer_id, hunks, window, cx);
}
}
@ -13647,16 +13629,20 @@ impl Editor {
}
fn do_stage_or_unstage(
project: &Entity<Project>,
&self,
stage: bool,
buffer_id: BufferId,
hunks: impl Iterator<Item = MultiBufferDiffHunk>,
snapshot: &MultiBufferSnapshot,
window: &mut Window,
cx: &mut App,
) {
let Some(project) = self.project.as_ref() else {
return;
};
let Some(buffer) = project.read(cx).buffer_for_id(buffer_id, cx) else {
log::debug!("no buffer for id");
return;
};
let Some(diff) = self.buffer.read(cx).diff_for(buffer_id) else {
return;
};
let buffer_snapshot = buffer.read(cx).snapshot();
@ -13670,37 +13656,31 @@ impl Editor {
log::debug!("no git repo for buffer id");
return;
};
let Some(diff) = snapshot.diff_for_buffer_id(buffer_id) else {
log::debug!("no diff for buffer id");
return;
};
let new_index_text = if !stage && diff.is_single_insertion || stage && !file_exists {
log::debug!("removing from index");
None
} else {
diff.new_secondary_text_for_stage_or_unstage(
let new_index_text = diff.update(cx, |diff, cx| {
diff.stage_or_unstage_hunks(
stage,
hunks.filter_map(|hunk| {
if stage && hunk.secondary_status == DiffHunkSecondaryStatus::None {
return None;
} else if !stage
&& hunk.secondary_status == DiffHunkSecondaryStatus::HasSecondaryHunk
{
return None;
}
Some((hunk.buffer_range.clone(), hunk.diff_base_byte_range.clone()))
}),
&hunks
.map(|hunk| buffer_diff::DiffHunk {
buffer_range: hunk.buffer_range,
diff_base_byte_range: hunk.diff_base_byte_range,
secondary_status: hunk.secondary_status,
row_range: 0..0, // unused
})
.collect::<Vec<_>>(),
&buffer_snapshot,
file_exists,
cx,
)
};
});
if file_exists {
let buffer_store = project.read(cx).buffer_store().clone();
buffer_store
.update(cx, |buffer_store, cx| buffer_store.save_buffer(buffer, cx))
.detach_and_log_err(cx);
}
let recv = repo
.read(cx)
.set_index_text(&path, new_index_text.map(|rope| rope.to_string()));