From abf45ae0b21d460a3bfd374e39034105b6cab08e Mon Sep 17 00:00:00 2001
From: Michal Nazarewicz <mina86@mina86.com>
Date: Wed, 24 Jan 2024 16:03:44 +0100
Subject: [PATCH] core: add `From<core::ascii::char>` implementations

Introduce `From<core::ascii::char>` implementations for all unsigned
numeric types and `char`.  This matches the API of `char` type.

Issue: https://github.com/rust-lang/rust/issues/110998
---
 library/core/src/ascii/ascii_char.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/library/core/src/ascii/ascii_char.rs b/library/core/src/ascii/ascii_char.rs
index cc872a5343d..5f758af1624 100644
--- a/library/core/src/ascii/ascii_char.rs
+++ b/library/core/src/ascii/ascii_char.rs
@@ -537,6 +537,22 @@ impl AsciiChar {
     }
 }
 
+macro_rules! into_int_impl {
+    ($($ty:ty)*) => {
+        $(
+            #[unstable(feature = "ascii_char", issue = "110998")]
+            impl From<AsciiChar> for $ty {
+                #[inline]
+                fn from(chr: AsciiChar) -> $ty {
+                    chr as u8 as $ty
+                }
+            }
+        )*
+    }
+}
+
+into_int_impl!(u8 u16 u32 u64 u128 char);
+
 impl [AsciiChar] {
     /// Views this slice of ASCII characters as a UTF-8 `str`.
     #[unstable(feature = "ascii_char", issue = "110998")]