impl Borrow<str> for RString

rust/src/ident.rs

@@ -19,7 +19,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use std::fmt::{self, Debug, Formatter};
 use std::str::FromStr;
 
 use amplify::Wrapper;
@@ -46,14 +45,18 @@ macro_rules! impl_ident_type {
             fn try_from(s: String) -> Result<Self, Self::Error> { Self::from_str(&s) }
         }
 
-        impl Debug for $ty {
-            fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        impl ::core::fmt::Debug for $ty {
+            fn fmt(&self, f: &mut ::core::fmt::Formatter<'_>) -> ::core::fmt::Result {
                 f.debug_tuple(&$crate::type_name::<Self>())
                     .field(&self.as_str())
                     .finish()
             }
         }
 
+        impl ::core::borrow::Borrow<str> for $ty {
+            fn borrow(&self) -> &str { self.as_str() }
+        }
+
         impl $ty {
             /// Returns string reference.
             pub fn as_str(&self) -> &str { self.0.as_str() }

rust/src/stl.rs

@@ -21,6 +21,7 @@
 
 #![allow(non_camel_case_types, unused_imports)]
 
+use std::borrow::Borrow;
 use std::fmt::{Debug, Display, Formatter};
 use std::marker::PhantomData;
 use std::ops::Deref;
@@ -102,6 +103,12 @@ impl<C1: RestrictedCharSet, C: RestrictedCharSet, const MIN: usize, const MAX: u
     fn as_ref(&self) -> &str { self.s.as_str() }
 }
 
+impl<C1: RestrictedCharSet, C: RestrictedCharSet, const MIN: usize, const MAX: usize> Borrow<str>
+    for RString<C1, C, MIN, MAX>
+{
+    fn borrow(&self) -> &str { self.s.as_str() }
+}
+
 impl<C1: RestrictedCharSet, C: RestrictedCharSet, const MIN: usize, const MAX: usize> FromStr
     for RString<C1, C, MIN, MAX>
 {