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module type Monad =
sig
type 'a t
val ret : 'a -> 'a t
val bind : 'a t -> ('a -> 'b t) -> 'b t
end
module type Param = Monad
module type S =
sig
type 'a t
val perform : 'a t -> 'a
val run : (unit -> 'a) -> 'a t
end
module Make (M : Monad) =
struct
include M
type 'a Effect.t += Monadic : 'a t -> 'a Effect.t
let perform m = Effect.perform (Monadic m)
let run f =
Effect.Deep.match_with f ()
{ retc = M.ret
; exnc = raise
; effc = function Monadic m -> Option.some @@ fun k -> M.bind m (Effect.Deep.continue k) | _ -> None
}
end