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-rw-r--r--helix-view/src/view.rs21
1 files changed, 14 insertions, 7 deletions
diff --git a/helix-view/src/view.rs b/helix-view/src/view.rs
index b7bfaa17..7bd31305 100644
--- a/helix-view/src/view.rs
+++ b/helix-view/src/view.rs
@@ -37,17 +37,24 @@ impl JumpList {
pub fn forward(&mut self, count: usize) -> Option<&Jump> {
if self.current + count < self.jumps.len() {
self.current += count;
- return self.jumps.get(self.current);
+ self.jumps.get(self.current)
+ } else {
+ None
}
- None
}
- pub fn backward(&mut self, count: usize) -> Option<&Jump> {
- if self.current.checked_sub(count).is_some() {
- self.current -= count;
- return self.jumps.get(self.current);
+ // Taking view and doc to prevent unnecessary cloning when jump is not required.
+ pub fn backward(&mut self, view_id: ViewId, doc: &mut Document, count: usize) -> Option<&Jump> {
+ if let Some(current) = self.current.checked_sub(count) {
+ if self.current == self.jumps.len() {
+ let jump = (doc.id(), doc.selection(view_id).clone());
+ self.push(jump);
+ }
+ self.current = current;
+ self.jumps.get(self.current)
+ } else {
+ None
}
- None
}
}