ref/mut in ast

src/ast.rs

@@ -297,8 +297,8 @@ impl Display for Type {
             Never => write!(fmt, "!"),
             Bool => write!(fmt, "bool"),
             I32 => write!(fmt, "i32"),
-            //Ref((is_mut, t)) => write!(fmt, "&{}", t),
-            //RefMut(t) => write!(fmt, "&mut {}", t),
+            Ref(t) => write!(fmt, "&{}", t),
+            Mut(t) => write!(fmt, "mut {}", t),
             _ => unimplemented!(),
         }
     }