Source file smtml_prelude.ml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
include Prelude
module Option = struct
include Option
let ( let* ) v f = bind v f
let ( let+ ) v f = map f v
end
module Result = struct
include Result
let ( let* ) v f = Result.bind v f
let ( let+ ) v f = Result.map f v
let rec list_iter f = function
| [] -> Ok ()
| hd :: tl ->
let* () = f hd in
list_iter f tl
let list_map f v =
let rec list_map_cps f v k =
match v with
| [] -> k (Ok [])
| hd :: tl ->
list_map_cps f tl (fun rest ->
let* rest in
let* hd' = f hd in
k (Ok (hd' :: rest)) )
in
list_map_cps f v Fun.id
let list_filter_map f v =
let rec list_filter_map_cps f v k =
match v with
| [] -> k (Ok [])
| hd :: tl ->
list_filter_map_cps f tl (fun rest ->
let* rest in
let* v = f hd in
k (Ok (match v with None -> rest | Some v -> v :: rest)) )
in
list_filter_map_cps f v Fun.id
end