From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Fri, 15 Nov 2024 16:17:54 +0000 (+0000)
Subject: provide as_mut
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=9153509268207513243665b56de60c6b8bc16785;p=manually-boxed

provide as_mut
---

diff --git a/src/lib.rs b/src/lib.rs
index ec245ab..2873b65 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -218,6 +218,12 @@ pub unsafe trait IsTokenMut<'a>: IsTokenRef<'a> + Sized + Sealed {
         TokenMut(PhantomData)
     }
 
+    /// Obtains a new ZST token from a borrow that might be of a real object.
+    #[inline]
+    fn as_mut<'r, 's: 'r>(&'s mut self) -> TokenMut<'r> where 'a: 'r {
+        TokenMut(PhantomData)
+    }
+
     /// Borrows from a small, fixed, number of multiple `Ptr`
     ///
     /// Call