diff options
Diffstat (limited to 'lib/protocols/Derived.ml')
| -rw-r--r-- | lib/protocols/Derived.ml | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/protocols/Derived.ml b/lib/protocols/Derived.ml new file mode 100644 index 0000000..1968ffc --- /dev/null +++ b/lib/protocols/Derived.ml @@ -0,0 +1,10 @@ +class type implementation = object + method within : Handle.t -> (Handle.t, Concepts.Condition.condition) result +end + +type Handle.protocol += Derived of implementation +type t = implementation + +let make impl = Derived (impl :> implementation) +let from handle = Handle.into handle (function Derived impl -> Some impl | _ -> None) +let within i directory = Handle.invoke i (fun o -> o#within directory) |