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Return optional transaction ids when starting/ending a transaction

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If the transaction was nested, we return None. Otherwise we return the transaction id in preparation for editors to maintain their own selection state.
This commit is contained in:
Nathan Sobo 2021-12-10 18:00:09 -07:00
parent c8b43e3078
commit 77defe6e28
6 changed files with 65 additions and 52 deletions
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38
crates/language/src/buffer.rs
View file

@ -977,8 +977,7 @@ impl Buffer {
.flat_map(|req| req.selection_set_ids.clone())
.collect::<HashSet<_>>();
self.start_transaction(selection_set_ids.iter().copied())
.unwrap();
self.start_transaction(selection_set_ids.iter().copied());
for (row, indent_column) in &indent_columns {
self.set_indent_column_for_line(*row, *indent_column, cx);
}
@ -1014,8 +1013,7 @@ impl Buffer {
}
}
self.end_transaction(selection_set_ids.iter().copied(), cx)
.unwrap();
self.end_transaction(selection_set_ids.iter().copied(), cx);
}
fn set_indent_column_for_line(&mut self, row: u32, column: u32, cx: &mut ModelContext<Self>) {
@ -1055,7 +1053,7 @@ impl Buffer {
pub(crate) fn apply_diff(&mut self, diff: Diff, cx: &mut ModelContext<Self>) -> bool {
if self.version == diff.base_version {
self.start_transaction(None).unwrap();
self.start_transaction(None);
let mut offset = 0;
for (tag, len) in diff.changes {
let range = offset..(offset + len);
@ -1068,7 +1066,7 @@ impl Buffer {
}
}
}
self.end_transaction(None, cx).unwrap();
self.end_transaction(None, cx);
true
} else {
false
@ -1095,7 +1093,7 @@ impl Buffer {
pub fn start_transaction(
&mut self,
selection_set_ids: impl IntoIterator<Item = SelectionSetId>,
) -> Result<()> {
) -> Option<TransactionId> {
self.start_transaction_at(selection_set_ids, Instant::now())
}
@ -1103,7 +1101,7 @@ impl Buffer {
&mut self,
selection_set_ids: impl IntoIterator<Item = SelectionSetId>,
now: Instant,
) -> Result<()> {
) -> Option<TransactionId> {
self.text.start_transaction_at(selection_set_ids, now)
}
@ -1111,7 +1109,7 @@ impl Buffer {
&mut self,
selection_set_ids: impl IntoIterator<Item = SelectionSetId>,
cx: &mut ModelContext<Self>,
) -> Result<()> {
) -> Option<TransactionId> {
self.end_transaction_at(selection_set_ids, Instant::now(), cx)
}
@ -1120,12 +1118,16 @@ impl Buffer {
selection_set_ids: impl IntoIterator<Item = SelectionSetId>,
now: Instant,
cx: &mut ModelContext<Self>,
) -> Result<()> {
if let Some(start_version) = self.text.end_transaction_at(selection_set_ids, now) {
) -> Option<TransactionId> {
if let Some((transaction_id, start_version)) =
self.text.end_transaction_at(selection_set_ids, now)
{
let was_dirty = start_version != self.saved_version;
self.did_edit(&start_version, was_dirty, cx);
Some(transaction_id)
} else {
None
}
Ok(())
}
fn update_language_server(&mut self) {
@ -1210,7 +1212,7 @@ impl Buffer {
return;
}
self.start_transaction(None).unwrap();
self.start_transaction(None);
self.pending_autoindent.take();
let autoindent_request = if autoindent && self.language.is_some() {
let before_edit = self.snapshot();
@ -1268,7 +1270,7 @@ impl Buffer {
}));
}
self.end_transaction(None, cx).unwrap();
self.end_transaction(None, cx);
self.send_operation(Operation::Buffer(text::Operation::Edit(edit)), cx);
}
@ -1474,18 +1476,18 @@ impl Buffer {
) where
T: rand::Rng,
{
self.start_transaction(None).unwrap();
self.start_transaction(None);
self.text.randomly_edit(rng, old_range_count);
self.end_transaction(None, cx).unwrap();
self.end_transaction(None, cx);
}
pub fn randomly_mutate<T>(&mut self, rng: &mut T, cx: &mut ModelContext<Self>)
where
T: rand::Rng,
{
self.start_transaction(None).unwrap();
self.start_transaction(None);
self.text.randomly_mutate(rng);
self.end_transaction(None, cx).unwrap();
self.end_transaction(None, cx);
}
}