package js_of_ocaml-compiler

  1. Overview
  2. Docs
Compiler from OCaml bytecode to JavaScript

Install 

dune-project
 Dependency

ocsigen.org Readme Changelog Edit opam file Versions (32)

Authors

  1. O
    Ocsigen team <dev@ocsigen.org>

Maintainers

  1. O
    Ocsigen team <dev@ocsigen.org>

Sources

js_of_ocaml-5.8.2.tbz
sha256=7220194bd2f9b14d958153a5a206750359d7b49de12fe88d7450d385cecbf04a
sha512=1a282bf88eba8489747f51e228385be8d926e5c57efe33ad6f324c30fbe4100e99970192284172b5cdef92922ca613968bf116eb706194a879899baddd0a47f4

doc/src/js_of_ocaml-compiler/magic_number.ml.html

Source file magic_number.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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
(* Js_of_ocaml compiler
 * http://www.ocsigen.org/js_of_ocaml/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, with linking exception;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *)

open! Stdlib

type t = string * int

exception Bad_magic_number of string

exception Bad_magic_version of t

let size = 12

let kind_of_string = function
  | "Caml1999X" -> "exe"
  | "Caml1999I" -> "cmi"
  | "Caml1999O" -> "cmo"
  | "Caml1999A" -> "cma"
  | "Caml1999Y" -> "cmx"
  | "Caml1999Z" -> "cmxa"
  | "Caml2007D" -> "cmxs"
  | "Caml2012T" -> "cmt"
  | "Caml1999M" -> "impl"
  | "Caml1999N" -> "intf"
  | _ -> raise Not_found

let of_string s =
  try
    if String.length s <> size then raise Not_found;
    let kind = String.sub s ~pos:0 ~len:9 in
    let v = String.sub s ~pos:9 ~len:3 in
    let _ = kind_of_string kind in
    kind, int_of_string v
  with _ -> raise (Bad_magic_number s)

let kind (s, _) =
  match kind_of_string s with
  | "exe" -> `Exe
  | "cmo" -> `Cmo
  | "cma" -> `Cma
  | other -> `Other other

let to_string (k, v) = Printf.sprintf "%s%03d" k v

let compare (p1, n1) (p2, n2) =
  match String.compare p1 p2 with
  | 0 -> compare n1 n2
  | n -> n

let equal a b = compare a b = 0

let v =
  let current = Ocaml_version.current in
  match current with
  | 4 :: 08 :: _ -> 25
  | 4 :: 09 :: _ -> 26
  | 4 :: 10 :: _ -> 27
  | 4 :: 11 :: _ -> 28
  | 4 :: 12 :: _ -> 29
  | 4 :: 13 :: _ -> 30
  | 4 :: 14 :: _ -> 31
  | 5 :: 00 :: _ -> 32
  | 5 :: 01 :: _ -> 33
  | 5 :: 02 :: _ -> 34
  | _ ->
      if Ocaml_version.compare current [ 4; 8 ] < 0
      then failwith "OCaml version unsupported. Upgrade to OCaml 4.08 or newer."
      else (
        assert (Ocaml_version.compare current [ 5; 3 ] >= 0);
        failwith "OCaml version unsupported. Upgrade js_of_ocaml.")

let current_exe = "Caml1999X", v

let current_cmo = "Caml1999O", v

let current_cma = "Caml1999A", v

let current = function
  | `Exe -> current_exe
  | `Cmo -> current_cmo
  | `Cma -> current_cma