Add conversions between Sled results and Flow results

result-extended/src/lib.rs

@@ -141,6 +141,30 @@ where
     }
 }
 
+impl<A, E: Error, FE: FatalError> From<std::result::Result<std::result::Result<A, E>, FE>>
+    for Result<A, E, FE>
+{
+    fn from(res: std::result::Result<std::result::Result<A, E>, FE>) -> Self {
+        match res {
+            Ok(Ok(v)) => ok(v),
+            Ok(Err(e)) => error(e),
+            Err(e) => fatal(e),
+        }
+    }
+}
+
+impl<A, E: Error, FE: FatalError> From<Result<A, E, FE>>
+    for std::result::Result<std::result::Result<A, E>, FE>
+{
+    fn from(res: Result<A, E, FE>) -> std::result::Result<std::result::Result<A, E>, FE> {
+        match res {
+            Result::Ok(v) => Ok(Ok(v)),
+            Result::Err(e) => Ok(Err(e)),
+            Result::Fatal(e) => Err(e),
+        }
+    }
+}
+
 /// Convenience function to create an ok value.
 pub fn ok<A, E: Error, FE: FatalError>(val: A) -> Result<A, E, FE> {
     Result::Ok(val)