From 9f8aba50e3396173248fad638d988ff2390791d2 Mon Sep 17 00:00:00 2001
From: Xiaopeng Li <lixiaopeng.jetspark@bytedance.com>
Date: Wed, 19 Apr 2023 21:57:11 +0800
Subject: [PATCH] Replace let-else

---
 src/platform_impl/macos/view.rs | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/src/platform_impl/macos/view.rs b/src/platform_impl/macos/view.rs
index 264ed354a96..79fa17a1fd0 100644
--- a/src/platform_impl/macos/view.rs
+++ b/src/platform_impl/macos/view.rs
@@ -400,7 +400,11 @@ declare_class!(
             _actual_range: *mut c_void, // *mut NSRange
         ) -> NSRect {
             trace_scope!("firstRectForCharacterRange:actualRange:");
-            let Some(window) = self.window() else { return NSRect::default(); };
+            let window = if let Some(window) = self.window() {
+                window
+            } else {
+                return NSRect::default();
+            };
             let content_rect = window.contentRectForFrameRect(window.frame());
             let base_x = content_rect.origin.x as f64;
             let base_y = (content_rect.origin.y + content_rect.size.height) as f64;
@@ -472,7 +476,11 @@ declare_class!(
 
             // Get the characters from the event.
             let ev_mods = event_mods(event);
-            let Some(window) = self.window() else { return; };
+            let window = if let Some(window) = self.window() {
+                window
+            } else {
+                return;
+            };
             let ignore_alt_characters = match window.option_as_alt() {
                 OptionAsAlt::OnlyLeft if event.lalt_pressed() => true,
                 OptionAsAlt::OnlyRight if event.ralt_pressed() => true,
@@ -611,7 +619,11 @@ declare_class!(
         #[sel(insertTab:)]
         fn insert_tab(&self, _sender: *const Object) {
             trace_scope!("insertTab:");
-            let Some(window) = self.window() else { return; };
+            let window = if let Some(window) = self.window() {
+                window
+            } else {
+                return;
+            };
             if let Some(first_responder) = window.firstResponder() {
                 if *first_responder == ***self {
                     window.selectNextKeyView(Some(self))
@@ -622,7 +634,11 @@ declare_class!(
         #[sel(insertBackTab:)]
         fn insert_back_tab(&self, _sender: *const Object) {
             trace_scope!("insertBackTab:");
-            let Some(window) = self.window() else { return; };
+            let window = if let Some(window) = self.window() {
+                window
+            } else {
+                return;
+            };
             if let Some(first_responder) = window.firstResponder() {
                 if *first_responder == ***self {
                     window.selectPreviousKeyView(Some(self))