factorize as_str method

this method is now generated by the wrap! macro
for all str-borrowing wrappers

api/src/prefix/_wrapper.rs

@@ -11,11 +11,6 @@ sophia_iri::wrap! { Prefix borrowing str :
             Err(InvalidPrefix(prefix.borrow().to_string()))
         }
     }
-
-    /// Gets a reference to the underlying &str.
-    pub fn as_str(&self) -> &str {
-        self.0.borrow()
-    }
 }
 
 impl<T: Borrow<str>> IsPrefix for Prefix<T> {}

api/src/term/bnode_id.rs

@@ -51,11 +51,6 @@ wrap! { BnodeId borrowing str :
             Err(InvalidBnodeId(id.borrow().to_string()))
         }
     }
-
-    /// Gets a reference to the underlying &str.
-    pub fn as_str(&self) -> &str {
-        self.0.borrow()
-    }
 }
 /// This error is raised when trying to parse an invalid blank node identifier.
 #[derive(Debug, Error)]

api/src/term/var_name.rs

@@ -40,11 +40,6 @@ wrap! { VarName borrowing str :
             Err(InvalidVarName(name.borrow().to_string()))
         }
     }
-
-    /// Gets a reference to the underlying &str.
-    pub fn as_str(&self) -> &str {
-        self.0.borrow()
-    }
 }
 /// This error is raised when trying to parse an invalid variable name.
 #[derive(Debug, Error)]

iri/src/_wrap_macro.rs

@@ -195,6 +195,11 @@ macro_rules! wrap {
             $new
 
             $($item)*
+
+            /// Gets a reference to the underlying &str.
+            pub fn as_str(&self) -> &str {
+                self.0.borrow()
+            }
         }
 
         impl<T: std::borrow::Borrow<str>> std::fmt::Debug for $wid<T> {
@@ -379,10 +384,6 @@ pub mod test_wrap_borrowing {
                 Err(())
             }
         }
-
-        pub fn as_str(&self) -> &str {
-            self.0.borrow()
-        }
     }
 
     #[test]

iri/src/_wrapper.rs

@@ -17,11 +17,6 @@ wrap! { Iri borrowing str :
         }
     }
 
-    /// Gets a reference to the underlying &str.
-    pub fn as_str(&self) -> &str {
-        self.0.borrow()
-    }
-
     /// Resolve a relative IRI reference against this one.
     ///
     /// NB: when resolving multiple IRI references against the same base,
@@ -70,11 +65,6 @@ wrap! { IriRef borrowing str :
         }
     }
 
-    /// Gets a reference to the underlying &str.
-    pub fn as_str(&self) -> &str {
-        self.0.borrow()
-    }
-
     /// Resolve a relative IRI reference against this one.
     ///
     /// NB: when resolving multiple IRI references against the same base,