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(* SPDX-License-Identifier: AGPL-3.0-or-later *)
(* Copyright © 2021-2024 OCamlPro *)
(* Written by the Owi programmers *)
open Stdlib.Result
let ( let* ) o f = match o with Ok v -> f v | Error _ as e -> e
let ( let+ ) o f = match o with Ok v -> Ok (f v) | Error _ as e -> e
let error v = Error v
let error_s format = Format.kasprintf error format
let ok v = Ok v
let list_iter f l =
let err = ref None in
try
List.iter
(fun v ->
match f v with
| Error _e as e ->
err := Some e;
raise Exit
| Ok () -> () )
l;
Ok ()
with Exit -> Option.get !err
let list_map f l =
let err = ref None in
try
ok
@@ List.map
(fun v ->
match f v with
| Error _e as e ->
err := Some e;
raise Exit
| Ok v -> v )
l
with Exit -> Option.get !err
let list_fold_left f acc l =
List.fold_left
(fun acc v ->
let* acc in
f acc v )
(Ok acc) l
let array_iter f a =
let err = ref None in
try
for i = 0 to Array.length a - 1 do
match f (Array.unsafe_get a i) with
| Error _e as e ->
err := Some e;
raise Exit
| Ok () -> ()
done;
Ok ()
with Exit -> Option.get !err
let array_map f a =
let err = ref None in
try
ok
@@ Array.init (Array.length a) (fun i ->
let v = Array.get a i in
match f v with
| Error _e as e ->
err := Some e;
raise Exit
| Ok v -> v )
with Exit -> Option.get !err
let array_fold_left f acc a =
let err = ref None in
let acc = ref acc in
try
for i = 0 to Array.length a - 1 do
match f !acc (Array.unsafe_get a i) with
| Error _e as e ->
err := Some e;
raise Exit
| Ok v -> acc := v
done;
Ok !acc
with Exit -> Option.get !err