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
[@@@ocaml.text "/*"]
(** Copyright 2021-2026, Kakadu and Yackovlev Nickolay *)
(** SPDX-License-Identifier: LGPL-3.0-or-later *)
[@@@ocaml.text "/*"]
open Format
open Ast
let string_of_unop = function
| Neg -> "-"
;;
let string_of_binop = function
| Add -> "+"
| Sub -> "-"
| Mul -> "*"
| Div -> "/"
;;
let string_of_cmpop = function
| Eq -> "="
| Neq -> "<>"
| Lt -> "<"
| Le -> "<="
| Gt -> ">"
| Ge -> ">="
;;
let rec pp fmt = function
| Var x -> pp_print_string fmt x
| Int n -> fprintf fmt "%d" n
| Abs (x, e) -> fprintf fmt "(fun %s -> %a)" x pp e
| App (e1, e2) -> fprintf fmt "(%a %a)" pp e1 pp e2
| Let (x, e1, e2) -> fprintf fmt "(let %s = %a in %a)" x pp e1 pp e2
| Let_rec (f, e1, e2) -> fprintf fmt "(let rec %s = %a in %a)" f pp e1 pp e2
| If (cond, t, e) -> fprintf fmt "(if %a then %a else %a)" pp cond pp t pp e
| Unop (op, e) -> fprintf fmt "(%s%a)" (string_of_unop op) pp e
| Binop (op, e1, e2) -> fprintf fmt "(%a %s %a)" pp e1 (string_of_binop op) pp e2
| Cmp (op, e1, e2) -> fprintf fmt "(%a %s %a)" pp e1 (string_of_cmpop op) pp e2
;;
let pp_named = pp
let show ast = asprintf "%a" pp ast