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-rw-r--r--lib/protocols/Evaluator.ml12
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/protocols/Evaluator.ml b/lib/protocols/Evaluator.ml
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+++ b/lib/protocols/Evaluator.ml
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+class type implementation = object
+ method capabilities : string BatSet.t
+ method admit : string -> (Handle.t, Concepts.Condition.condition) result
+end
+
+type Handle.protocol += Evaluator of implementation
+type t = implementation
+
+let make impl = Evaluator (impl :> implementation)
+let from handle = Handle.into handle (function Evaluator impl -> Some impl | _ -> None)
+let capabilities i = Handle.invoke i (fun o -> o#capabilities)
+let admit i source = Handle.invoke i (fun o -> o#admit source)