package ocaml-solo5

  1. Overview
  2. Docs
OCaml cross-compiler to the freestanding Solo5 backend

Install 

dune-project
 Dependency

github.com Edit opam file Versions (10)

Authors

  1. M
    Martin Lucina <martin@lucina.net>

Maintainers

  1. M
    Martin Lucina <martin@lucina.net>

Sources

v1.3.3.tar.gz
md5=47876167068345542f49279e8fd28896
sha512=272081ec51a6ed69c08e4e8fa64fee3df53fd84c66c0c07a653891c88b342cf74553e1c95711e4fbc18922c899a3448a649f3bd9858f8d89cae834ad2b67fffb

doc/src/stdlib/type.ml.html

Source file type.ml

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(**************************************************************************)
(*                                                                        *)
(*                                 OCaml                                  *)
(*                                                                        *)
(*                         The OCaml programmers                          *)
(*                                                                        *)
(*   Copyright 2022 Institut National de Recherche en Informatique et     *)
(*     en Automatique.                                                    *)
(*                                                                        *)
(*   All rights reserved.  This file is distributed under the terms of    *)
(*   the GNU Lesser General Public License version 2.1, with the          *)
(*   special exception on linking described in the file LICENSE.          *)
(*                                                                        *)
(**************************************************************************)

(* Type equality witness *)

type (_, _) eq = Equal: ('a, 'a) eq

(* Type identifiers *)

module Id = struct
  type _ id = ..
  module type ID = sig
    type t
    type _ id += Id : t id
  end

  type !'a t = (module ID with type t = 'a)

  let make (type a) () : a t =
    (module struct type t = a type _ id += Id : t id end)

  let[@inline] uid (type a) ((module A) : a t) =
    Obj.Extension_constructor.id [%extension_constructor A.Id]

  let provably_equal
      (type a b) ((module A) : a t) ((module B) : b t) : (a, b) eq option
    =
    match A.Id with B.Id -> Some Equal | _ -> None
end