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Fix panic when resolving anchors after an excerpt id has been recycled

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Co-Authored-By: Nathan Sobo <nathan@zed.dev>
This commit is contained in:
Max Brunsfeld
2022-01-05 11:28:49 -08:00
co-authored by Nathan Sobo
parent 8728d3292d
commit 85a13fa477
3 changed files with 62 additions and 4 deletions
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crates/editor/src/multi_buffer/anchor.rs
+5
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@@ -9,6 +9,7 @@ use text::{rope::TextDimension, Point};
#[derive(Clone, Eq, PartialEq, Debug, Hash)]
pub struct Anchor {
pub(crate) buffer_id: usize,
pub(crate) excerpt_id: ExcerptId,
pub(crate) text_anchor: text::Anchor,
}
@@ -16,6 +17,7 @@ pub struct Anchor {
impl Anchor {
pub fn min() -> Self {
Self {
buffer_id: 0,
excerpt_id: ExcerptId::min(),
text_anchor: text::Anchor::min(),
}
@@ -23,6 +25,7 @@ impl Anchor {
pub fn max() -> Self {
Self {
buffer_id: 0,
excerpt_id: ExcerptId::max(),
text_anchor: text::Anchor::max(),
}
@@ -54,6 +57,7 @@ impl Anchor {
if self.text_anchor.bias != Bias::Left {
if let Some(buffer_snapshot) = snapshot.buffer_snapshot_for_excerpt(&self.excerpt_id) {
return Self {
buffer_id: self.buffer_id,
excerpt_id: self.excerpt_id.clone(),
text_anchor: self.text_anchor.bias_left(buffer_snapshot),
};
@@ -66,6 +70,7 @@ impl Anchor {
if self.text_anchor.bias != Bias::Right {
if let Some(buffer_snapshot) = snapshot.buffer_snapshot_for_excerpt(&self.excerpt_id) {
return Self {
buffer_id: self.buffer_id,
excerpt_id: self.excerpt_id.clone(),
text_anchor: self.text_anchor.bias_right(buffer_snapshot),
};