From cee7ad781e5f6de249d728425a6283a26bb62dc3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bla=C5=BE=20Hrastnik?= <blaz@mxxn.io>
Date: Sun, 24 Oct 2021 17:28:29 +0900
Subject: [PATCH] Mark a few functions as `const`

---
 helix-core/src/line_ending.rs | 6 +++---
 helix-core/src/register.rs    | 4 ++--
 helix-term/src/ui/editor.rs   | 2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/helix-core/src/line_ending.rs b/helix-core/src/line_ending.rs
index 18ea5f9f..3541305c 100644
--- a/helix-core/src/line_ending.rs
+++ b/helix-core/src/line_ending.rs
@@ -20,7 +20,7 @@ pub enum LineEnding {
 
 impl LineEnding {
     #[inline]
-    pub fn len_chars(&self) -> usize {
+    pub const fn len_chars(&self) -> usize {
         match self {
             Self::Crlf => 2,
             _ => 1,
@@ -28,7 +28,7 @@ impl LineEnding {
     }
 
     #[inline]
-    pub fn as_str(&self) -> &'static str {
+    pub const fn as_str(&self) -> &'static str {
         match self {
             Self::Crlf => "\u{000D}\u{000A}",
             Self::LF => "\u{000A}",
@@ -42,7 +42,7 @@ impl LineEnding {
     }
 
     #[inline]
-    pub fn from_char(ch: char) -> Option<LineEnding> {
+    pub const fn from_char(ch: char) -> Option<LineEnding> {
         match ch {
             '\u{000A}' => Some(LineEnding::LF),
             '\u{000B}' => Some(LineEnding::VT),
diff --git a/helix-core/src/register.rs b/helix-core/src/register.rs
index c3e6652e..c5444eb7 100644
--- a/helix-core/src/register.rs
+++ b/helix-core/src/register.rs
@@ -7,7 +7,7 @@ pub struct Register {
 }
 
 impl Register {
-    pub fn new(name: char) -> Self {
+    pub const fn new(name: char) -> Self {
         Self {
             name,
             values: Vec::new(),
@@ -18,7 +18,7 @@ impl Register {
         Self { name, values }
     }
 
-    pub fn name(&self) -> char {
+    pub const fn name(&self) -> char {
         self.name
     }
 
diff --git a/helix-term/src/ui/editor.rs b/helix-term/src/ui/editor.rs
index 9234bb96..692696a6 100644
--- a/helix-term/src/ui/editor.rs
+++ b/helix-term/src/ui/editor.rs
@@ -1106,7 +1106,7 @@ fn canonicalize_key(key: &mut KeyEvent) {
 }
 
 #[inline]
-fn abs_diff(a: usize, b: usize) -> usize {
+const fn abs_diff(a: usize, b: usize) -> usize {
     if a > b {
         a - b
     } else {