From f979d8dbc36534802e1f36e98ed5a639053164ac Mon Sep 17 00:00:00 2001
From: Jeong YunWon <jeong@youknowone.org>
Date: Thu, 10 Nov 2022 15:39:31 +0900
Subject: [PATCH] Apply let-else statements

---
 parser/build.rs | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/parser/build.rs b/parser/build.rs
index 81c28f4..4559f26 100644
--- a/parser/build.rs
+++ b/parser/build.rs
@@ -17,9 +17,7 @@ fn main() -> anyhow::Result<()> {
 }
 
 fn requires_lalrpop(source: &str, target: &str) -> Option<String> {
-    let target = if let Ok(target) = File::open(target) {
-        target
-    } else {
+    let Ok(target) = File::open(target) else {
         return Some("python.rs doesn't exist. regenerate.".to_owned());
     };
 
@@ -71,9 +69,7 @@ fn requires_lalrpop(source: &str, target: &str) -> Option<String> {
 }
 
 fn try_lalrpop(source: &str, target: &str) -> anyhow::Result<()> {
-    let _message = if let Some(msg) = requires_lalrpop(source, target) {
-        msg
-    } else {
+    let Some(_message) = requires_lalrpop(source, target) else {
         return Ok(());
     };