/usr/lib/ats2-postiats-0.2.6/prelude/DATS/option.dats is in ats2-lang 0.2.6-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | (***********************************************************************)
(* *)
(* Applied Type System *)
(* *)
(***********************************************************************)
(*
** ATS/Postiats - Unleashing the Potential of Types!
** Copyright (C) 2010-2015 Hongwei Xi, ATS Trustful Software, Inc.
** All rights reserved
**
** ATS is free software; you can redistribute it and/or modify it under
** the terms of the GNU GENERAL PUBLIC LICENSE (GPL) as published by the
** Free Software Foundation; either version 3, or (at your option) any
** later version.
**
** ATS 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 General Public License
** for more details.
**
** You should have received a copy of the GNU General Public License
** along with ATS; see the file COPYING. If not, please write to the
** Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
** 02110-1301, USA.
*)
(* ****** ****** *)
(*
** Source:
** $PATSHOME/prelude/DATS/CODEGEN/option.atxt
** Time of generation: Sun Aug 9 17:18:44 2015
*)
(* ****** ****** *)
(* Author: Hongwei Xi *)
(* Authoremail: hwxi AT cs DOT bu DOT edu *)
(* Start time: Feburary, 2012 *)
(* ****** ****** *)
implement{a} option_some (x) = Some (x)
implement{a} option_none ( ) = None ( )
(* ****** ****** *)
implement
{}(*tmp*)
option_is_some (opt) =
case+ opt of Some _ => true | None _ => false
// end of [option_is_some]
implement
{}(*tmp*)
option_is_none (opt) =
case+ opt of Some _ => false | None _ => true
// end of [option_is_none]
(* ****** ****** *)
implement
{a}(*tmp*)
option_unsome
(opt) = x where { val+Some (x) = opt }
// end of [option_unsome]
implement
{a}(*tmp*)
option_unsome_exn
(opt) = (
case+ opt of
| Some x => x | None _ => $raise NotSomeExn()
) // end of [option_unsome_exn]
(* ****** ****** *)
implement
{a}(*tmp*)
option_equal
(opt1, opt2) =
(
//
case+ opt1 of
| None () =>
(
case+ opt1 of None () => true | Some _ => false
)
| Some x1 =>
(
case+ opt2 of None () => false | Some x2 => option_equal$eqfn(x1, x2)
)
//
) (* end of [option_equal] *)
(* ****** ****** *)
implement
{a}(*tmp*)
fprint_option
(out, opt) = let
in
//
case+ opt of
| Some (x) => {
val (
) = fprint_string (out, "Some(")
val () = fprint_val<a> (out, x)
val () = fprint_string (out, ")")
} (* end of [Some] *)
| None () => fprint_string (out, "None()")
//
end // end of [fprint_option]
(* ****** ****** *)
(* end of [option.dats] *)
|