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|
(* TEST
*)
open Printf
open Effect
open Effect.Deep
type _ t += E : int -> int t
let f () =
printf "perform effect (E 0)\n%!";
let v = perform (E 0) in
printf "perform returns %d\n%!" v;
v + 1
let h : type a. a t -> ((a, 'b) continuation -> 'b) option = function
| E v -> Some (fun k ->
printf "caught effect (E %d). continuing..\n%!" v;
let v = continue k (v + 1) in
printf "continue returns %d\n%!" v;
v + 1)
| e -> None
let v =
match_with f ()
{ retc = (fun v -> printf "done %d\n%!" v; v + 1);
exnc = (fun e -> raise e);
effc = h }
let () = printf "result=%d\n%!" v
|
