bendns' repos / helix
Unnamed repository; edit this file 'description' to name the repository.
Diffstat
-rw-r--r--helix-core/src/position.rs38
1 files changed, 37 insertions, 1 deletions
diff --git a/helix-core/src/position.rs b/helix-core/src/position.rs
index ee764bc6..dba11212 100644
--- a/helix-core/src/position.rs
+++ b/helix-core/src/position.rs
@@ -1,4 +1,8 @@
-use std::{borrow::Cow, cmp::Ordering};
+use std::{
+ borrow::Cow,
+ cmp::Ordering,
+ ops::{Add, AddAssign, Sub, SubAssign},
+};
use crate::{
chars::char_is_line_ending,
@@ -16,6 +20,38 @@ pub struct Position {
pub col: usize,
}
+impl AddAssign for Position {
+ fn add_assign(&mut self, rhs: Self) {
+ self.row += rhs.row;
+ self.col += rhs.col;
+ }
+}
+
+impl SubAssign for Position {
+ fn sub_assign(&mut self, rhs: Self) {
+ self.row -= rhs.row;
+ self.col -= rhs.col;
+ }
+}
+
+impl Sub for Position {
+ type Output = Position;
+
+ fn sub(mut self, rhs: Self) -> Self::Output {
+ self -= rhs;
+ self
+ }
+}
+
+impl Add for Position {
+ type Output = Position;
+
+ fn add(mut self, rhs: Self) -> Self::Output {
+ self += rhs;
+ self
+ }
+}
+
impl Position {
pub const fn new(row: usize, col: usize) -> Self {
Self { row, col }