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deduplicate savepoints

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This commit is contained in:
Pascal Kuthe 2023-04-05 20:24:49 +02:00 committed by Blaž Hrastnik
parent 9c558fc470
commit bcb8c3d34d
1 changed files with 16 additions and 0 deletions
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16
helix-view/src/document.rs
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@ -1240,6 +1240,22 @@ pub fn redo(&mut self, view: &mut View) -> bool {
/// the state it had when this function was called.
pub fn savepoint(&mut self, view: &View) -> Arc<SavePoint> {
let revert = Transaction::new(self.text()).with_selection(self.selection(view.id).clone());
// check if there is already an existing (identical) savepoint around
if let Some(savepoint) = self
.savepoints
.iter()
.rev()
.find_map(|savepoint| savepoint.upgrade())
{
let transaction = savepoint.revert.lock();
if savepoint.view == view.id
&& transaction.changes().is_empty()
&& transaction.selection() == revert.selection()
{
drop(transaction);
return savepoint;
}
}
let savepoint = Arc::new(SavePoint {
view: view.id,
revert: Mutex::new(revert),