From abaf277fb48fdf5aa4452fcac07a5d5ac0001e85 Mon Sep 17 00:00:00 2001
From: Eryn Wells <eryn@erynwells.me>
Date: Fri, 20 Jun 2025 14:25:10 -0700
Subject: [PATCH] [core] Use the matches! macro to calculate the value of
 Shape::is_promotable

I learned about this macro a little while ago and it's better than writing out
a match block by hand, and also doesn't require static or const data, like the
previous implementation did.
---
 core/src/shapes.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/shapes.rs b/core/src/shapes.rs
index 8184f1d..0cedc7c 100644
--- a/core/src/shapes.rs
+++ b/core/src/shapes.rs
@@ -71,7 +71,7 @@ impl Shape {
 
     #[must_use]
     pub fn is_promotable(&self) -> bool {
-        Self::PROMOTABLE_SHAPES.contains(self)
+        matches!(self, Self::Knight | Self::Bishop | Self::Rook | Self::Queen)
     }
 
     #[must_use]