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-rw-r--r--helix-view/src/editor.rs36
1 files changed, 24 insertions, 12 deletions
diff --git a/helix-view/src/editor.rs b/helix-view/src/editor.rs
index b558c183..a121a836 100644
--- a/helix-view/src/editor.rs
+++ b/helix-view/src/editor.rs
@@ -22,10 +22,10 @@ use anyhow::Error;
pub use helix_core::diagnostic::Severity;
pub use helix_core::register::Registers;
-use helix_core::{hashmap, syntax};
+use helix_core::syntax;
use helix_core::{Position, Selection};
-use serde::Deserialize;
+use serde::{Deserialize, Deserializer};
fn deserialize_duration_millis<'de, D>(deserializer: D) -> Result<Duration, D::Error>
where
@@ -107,12 +107,28 @@ pub struct Config {
pub cursor_shape: CursorShapeConfig,
}
-#[derive(Debug, Clone, PartialEq, Deserialize)]
-#[serde(transparent)]
-pub struct CursorShapeConfig(HashMap<Mode, CursorKind>);
+// Cursor shape is read and used on every rendered frame and so needs
+// to be fast. Therefore we avoid a hashmap and use an enum indexed array.
+#[derive(Debug, Clone, PartialEq)]
+pub struct CursorShapeConfig([CursorKind; 3]);
+
+impl<'de> Deserialize<'de> for CursorShapeConfig {
+ fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+ where
+ D: Deserializer<'de>,
+ {
+ let m = HashMap::<Mode, CursorKind>::deserialize(deserializer)?;
+ let into_cursor = |mode: Mode| m.get(&mode).copied().unwrap_or_default();
+ Ok(CursorShapeConfig([
+ into_cursor(Mode::Normal),
+ into_cursor(Mode::Select),
+ into_cursor(Mode::Insert),
+ ]))
+ }
+}
impl std::ops::Deref for CursorShapeConfig {
- type Target = HashMap<Mode, CursorKind>;
+ type Target = [CursorKind; 3];
fn deref(&self) -> &Self::Target {
&self.0
@@ -121,11 +137,7 @@ impl std::ops::Deref for CursorShapeConfig {
impl Default for CursorShapeConfig {
fn default() -> Self {
- Self(hashmap!(
- Mode::Insert => CursorKind::Block,
- Mode::Normal => CursorKind::Block,
- Mode::Select => CursorKind::Block,
- ))
+ Self([CursorKind::Block; 3])
}
}
@@ -621,7 +633,7 @@ impl Editor {
let cursorkind = self
.config
.cursor_shape
- .get(&doc.mode())
+ .get(doc.mode() as usize)
.copied()
.unwrap_or_default();
(Some(pos), cursorkind)