Add LocalResult<T>::map_result_unique()

chronotope · Feb 28, 2024 · b9f133b · b9f133b
1 parent 130bf14
commit b9f133b
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/src/offset/mod.rs b/src/offset/mod.rs
@@ -84,6 +84,16 @@ impl<T> LocalResult<T> {
             LocalResult::Ambiguous(min, max) => LocalResult::Ambiguous(f(min), f(max)),
         }
     }
+
+    /// Maps a `LocalResult<T>` into `Result<T, Error>`.
+    ///
+    /// Returns [`Error::InvalidArgument`] if the conversion result not unique.
+    pub fn map_result_unique(self) -> Result<T, Error> {
+        match self {
+            LocalResult::Single(t) => Ok(t),
+            _ => Err(Error::InvalidArgument),
+        }
+    }
 }
 
 impl<T: fmt::Debug> LocalResult<T> {