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linguist/samples/ATS/linset.hats
2014-01-25 12:09:00 -05:00

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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 *)
(* Authoremail: hwxi AT cs DOT bu DOT edu *)
(* Start time: December, 2012 *)
(* ****** ****** *)
//
// HX: shared by linset_listord (* ordered list *)
// HX: shared by linset_avltree (* AVL-tree-based *)
//
(* ****** ****** *)
//
// HX-2013-02:
// for sets of nonlinear elements
//
absvtype set_vtype (a:t@ype+) = ptr
//
(* ****** ****** *)
vtypedef set (a:t0p) = set_vtype (a)
(* ****** ****** *)
fun{a:t0p}
compare_elt_elt (x1: a, x2: a):<> int
(* ****** ****** *)
fun{} linset_nil{a:t0p} ():<> set(a)
fun{} linset_make_nil{a:t0p} ():<> set(a)
(* ****** ****** *)
fun{a:t0p} linset_sing (x: a):<!wrt> set(a)
fun{a:t0p} linset_make_sing (x: a):<!wrt> set(a)
(* ****** ****** *)
fun{a:t0p}
linset_make_list (xs: List(INV(a))):<!wrt> set(a)
(* ****** ****** *)
fun{}
linset_is_nil {a:t0p} (xs: !set(INV(a))):<> bool
fun{}
linset_isnot_nil {a:t0p} (xs: !set(INV(a))):<> bool
(* ****** ****** *)
fun{a:t0p} linset_size (!set(INV(a))): size_t
(* ****** ****** *)
fun{a:t0p}
linset_is_member (xs: !set(INV(a)), x0: a):<> bool
fun{a:t0p}
linset_isnot_member (xs: !set(INV(a)), x0: a):<> bool
(* ****** ****** *)
fun{a:t0p}
linset_copy (!set(INV(a))):<!wrt> set(a)
fun{a:t0p}
linset_free (xs: set(INV(a))):<!wrt> void
(* ****** ****** *)
//
fun{a:t0p}
linset_insert
(xs: &set(INV(a)) >> _, x0: a):<!wrt> bool
//
(* ****** ****** *)
//
fun{a:t0p}
linset_takeout
(
&set(INV(a)) >> _, a, res: &(a?) >> opt(a, b)
) :<!wrt> #[b:bool] bool(b) // endfun
fun{a:t0p}
linset_takeout_opt (&set(INV(a)) >> _, a):<!wrt> Option_vt(a)
//
(* ****** ****** *)
//
fun{a:t0p}
linset_remove
(xs: &set(INV(a)) >> _, x0: a):<!wrt> bool
//
(* ****** ****** *)
//
// HX: choosing an element in an unspecified manner
//
fun{a:t0p}
linset_choose
(
xs: !set(INV(a)), x: &a? >> opt (a, b)
) :<!wrt> #[b:bool] bool(b)
//
fun{a:t0p}
linset_choose_opt (xs: !set(INV(a))):<!wrt> Option_vt(a)
//
(* ****** ****** *)
fun{a:t0p}
linset_takeoutmax
(
xs: &set(INV(a)) >> _, res: &a? >> opt(a, b)
) :<!wrt> #[b:bool] bool (b)
fun{a:t0p}
linset_takeoutmax_opt (xs: &set(INV(a)) >> _):<!wrt> Option_vt(a)
(* ****** ****** *)
fun{a:t0p}
linset_takeoutmin
(
xs: &set(INV(a)) >> _, res: &a? >> opt(a, b)
) :<!wrt> #[b:bool] bool (b)
fun{a:t0p}
linset_takeoutmin_opt (xs: &set(INV(a)) >> _):<!wrt> Option_vt(a)
(* ****** ****** *)
//
fun{}
fprint_linset$sep (FILEref): void // ", "
//
fun{a:t0p}
fprint_linset (out: FILEref, xs: !set(INV(a))): void
//
overload fprint with fprint_linset
//
(* ****** ****** *)
//
fun{
a:t0p}{env:vt0p
} linset_foreach$fwork
(x: a, env: &(env) >> _): void
//
fun{a:t0p}
linset_foreach (set: !set(INV(a))): void
fun{
a:t0p}{env:vt0p
} linset_foreach_env
(set: !set(INV(a)), env: &(env) >> _): void
// end of [linset_foreach_env]
//
(* ****** ****** *)
fun{a:t0p}
linset_listize (xs: set(INV(a))): List0_vt (a)
(* ****** ****** *)
fun{a:t0p}
linset_listize1 (xs: !set(INV(a))): List0_vt (a)
(* ****** ****** *)
(* end of [linset.hats] *)