@@ -1,7 +1,8 @@
use crate::{
- editor::{display_map::FoldMap, Buffer, TextSummary},
+ editor::{display_map::FoldMap, Buffer, Point, TextSummary},
sum_tree::{self, SumTree},
time,
+ util::Bias,
};
use gpui::{AppContext, Entity, ModelContext, ModelHandle, Task};
use parking_lot::Mutex;
@@ -56,6 +57,7 @@ impl WrapMap {
let (buffers_tx, buffers_rx) = mpsc::channel(32);
cx.observe(&buffer_handle, move |_, buffer, cx| {
let mut buffers_tx = buffers_tx.clone();
+ // TODO: replace cloning buffers with sending `Buffer::snapshot`.
let buffer = buffer.read(cx).clone();
cx.spawn_weak(|_, _| async move {
let _ = buffers_tx.send(buffer).await;
@@ -111,6 +113,20 @@ impl BackgroundWrapper {
}
async fn sync(&mut self, buffer: Buffer) -> bool {
+ let mut new_transforms = SumTree::new();
+ {
+ let mut old_cursor = self.snapshot.transforms.cursor::<Point, ()>();
+ for edit in buffer.edits_since(self.snapshot.version.clone()) {
+ // TODO: old lines gives us an extent but we really want to park ourselves at the start of the line.
+ new_transforms.push_tree(
+ old_cursor.slice(&Point::new(edit.old_lines.row, 0), Bias::Left, &()),
+ &(),
+ );
+ }
+ }
+
+ self.snapshot.transforms = new_transforms;
+ self.snapshot.version = buffer.version();
self.snapshots_tx.send(self.snapshot.clone()).await.is_ok()
}
}
@@ -144,8 +160,8 @@ impl sum_tree::Summary for TransformSummary {
}
}
-impl<'a> sum_tree::Dimension<'a, TransformSummary> for TransformSummary {
+impl<'a> sum_tree::Dimension<'a, TransformSummary> for Point {
fn add_summary(&mut self, summary: &'a TransformSummary, _: &()) {
- sum_tree::Summary::add_summary(self, summary, &());
+ *self += &summary.buffer.lines;
}
}