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|
(* TEST
* setup-ocamlc.byte-build-env
** ocamlc.byte
module = "stack_space.ml"
*** ocamlc.byte
program = "./test.byte.exe"
all_modules = "stack_space.cmo"
module = ""
**** run
ocamlrunparam += ",l=300"
*)
(* large with respect to the stack-size=300 setting above *)
let large = 30000
let init n f =
let[@tail_mod_cons] rec init_aux i n f =
if i = n then []
else f i :: init_aux (i + 1) n f
in init_aux 0 n f
module ListMap = struct
let[@tail_mod_cons] rec map f = function
| [] -> []
| x :: xs ->
(* Note: tail-mod-cons guarantees that 'map f xs' is evaluated last *)
f x :: map f xs
let _ =
init large Fun.id
|> map succ
end
module TreeMap = struct
type 'a tree =
| Leaf of 'a
| Node of 'a tree * 'a tree
let[@tail_mod_cons] rec map f = function
| Leaf v -> Leaf (f v)
| Node (left, right) ->
Node (map f left, (map [@tailcall]) f right)
let _ =
init large Fun.id
|> List.fold_left (fun t n -> Node (Leaf n, t)) (Leaf (-1))
(* large right-leaning tree *)
|> map succ
end
|
