/usr/lib/ats2-postiats-0.2.6/libc/gdbm/SATS/SHARE/datum.hats 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.
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(* *)
(* Applied Type System *)
(* *)
(***********************************************************************)
(*
** ATS/Postiats - Unleashing the Potential of Types!
** Copyright (C) 2011-2013 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.
*)
(* ****** ****** *)
//
// Author: Hongwei Xi (gmhwxi AT gmail DOT com)
// Start Time: July, 2013
//
(* ****** ****** *)
absvtype
dptr_addr_int_vtype (addr, int)
//
vtypedef dptr
(l:addr, n:int) = dptr_addr_int_vtype (l, n)
//
(* ****** ****** *)
viewdef dptrout
(l:addr, n:int) = dptr (l, n) -<lin,prf> void
(* ****** ****** *)
castfn dptr2ptr
{l:addr} {n:int} (x: !dptr(l, n)):<> ptr (l)
overload ptrcast with dptr2ptr
(* ****** ****** *)
vtypedef
datum
(l:addr, n:int) =
$extype_struct
"atslib_datum_type" of { dptr= dptr(l, n), dsize= int(n) }
// end of [datum]
(* ****** ****** *)
vtypedef
datum0 = [l:addr;n:int] datum (l, n)
vtypedef // for valid data
datum1 = [l:addr;n:int | l > null; n >= 0] datum (l, n)
(* ****** ****** *)
fun datum_is_valid
{l:addr}{n:int}
(x: datum (l, n))
: bool (l > null) = "mac#atslib_gdbm_datum_is_valid"
// end of [datum_is_valid]
fun datum_takeout_ptr
{l:addr}{n:int}
(datum (l, n)):<> dptr (l, n) = "mac#atslib_gdbm_datum_takeout_ptr"
// end of [datum_takeout_ptr]
(* ****** ****** *)
//
// HX: implemented in [gdbm.cats]
//
fun
datum_make0_string
(string)
: [l:agz;n:nat]
(
dptrout (l, n) | datum (l, n)
) = "mac#atslib_gdbm_datum_make0_string"
//
fun datum_make1_string
(string): datum1 = "mac#atslib_gdbm_datum_make1_string"
//
(* ****** ****** *)
fun datum_free (x: datum0): void = "mac#atslib_gdbm_datum_free"
(* ****** ****** *)
(* end of [datum.hats] *)
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