Implement Encode and RefEncode for Wrapping<T>

Author: madsmtm

objc2_encode/src/encode.rs

@@ -2,7 +2,7 @@ use core::ffi::c_void;
 use core::mem::ManuallyDrop;
 use core::num::{
     NonZeroI16, NonZeroI32, NonZeroI64, NonZeroI8, NonZeroIsize, NonZeroU16, NonZeroU32,
-    NonZeroU64, NonZeroU8, NonZeroUsize,
+    NonZeroU64, NonZeroU8, NonZeroUsize, Wrapping,
 };
 use core::pin::Pin;
 use core::ptr::NonNull;
@@ -314,6 +314,16 @@ unsafe impl<T: RefEncode> RefEncode for Pin<T> {
     const ENCODING_REF: Encoding<'static> = T::ENCODING_REF;
 }
 
+// SAFETY: `Wrapping` is `repr(transparent)`.
+unsafe impl<T: Encode> Encode for Wrapping<T> {
+    const ENCODING: Encoding<'static> = T::ENCODING;
+}
+
+// SAFETY: `Wrapping` is `repr(transparent)`.
+unsafe impl<T: RefEncode> RefEncode for Wrapping<T> {
+    const ENCODING_REF: Encoding<'static> = T::ENCODING_REF;
+}
+
 /// Helper for implementing `Encode`/`RefEncode` for pointers to types that
 /// implement `RefEncode`.
 ///