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/usr/lib/ats2-postiats-0.1.3/libc/SATS/string.sats is in ats2-lang 0.1.3-1.

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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: March, 2013
//
(* ****** ****** *)

%{#
#include "libc/CATS/string.cats"
%} // end of [%{#]

(* ****** ****** *)

#define ATS_PACKNAME "ATSLIB.libc"
#define ATS_EXTERN_PREFIX "atslib_" // prefix for external names

(* ****** ****** *)

vtypedef
RD(a:vt0p) = a // for commenting: read-only
#define NSH (x) x // for commenting: no sharing
#define SHR (x) x // for commenting: it is shared

(* ****** ****** *)

fun strcmp (x1: string, x2: string):<> int = "mac#%"
fun strncmp (x1: string, x2: string, n: size_t):<> int = "mac#%"

(* ****** ****** *)

fun strcoll (x1: string, x2: string):<> int = "mac#%"

(* ****** ****** *)

fun strspn (x1: string, x2: string):<> size_t = "mac#%"
fun strcspn (x1: string, x2: string):<> size_t = "mac#%"

(* ****** ****** *)
//
fun strlen
  {n:int} (x: string n):<> size_t (n) = "mac#%"
fun strnlen {m,n:int}
  (x: string n, max: size_t m):<> size_t (min(m,n)) = "mac#%"
//
(* ****** ****** *)

fun strcat
  {l:addr}{m:int}{n1,n2:int | n1+n2 < m}
(
  !strbuf_v (l, m, n1) >> strbuf_v (l, m, n1+n2) | ptr (l), string (n2)
) :<!wrt> ptr (l) = "mac#%" // end of [strcat]

fun strcat_unsafe
  {l:addr} (x1: ptr (l), x2: string):<!wrt> ptr (l) = "mac#%"
fun strncat_unsafe
  {l:addr} (x1: ptr (l), x2: string, n: size_t):<!wrt> ptr (l) = "mac#%"

(* ****** ****** *)

fun strcpy
  {l:addr}{m:int}{n:int | n < m}
(
  !b0ytes(m) @ l >> strbuf_v (l, m, n) | ptr (l), string (n)
) :<!wrt> ptr (l) = "mac#%" // endfun

fun strcpy_unsafe
  {l:addr} (dst: ptr (l), src: string):<!wrt> ptr (l) = "mac#%"
fun strncpy_unsafe
  {l:addr} (dst: ptr (l), src: string, n: size_t):<!wrt> ptr (l) = "mac#%"

(* ****** ****** *)

absview strdup_view (l:addr)
viewdef strdup_v (l:addr) = strdup_view (l)

fun strdup
(
  str: string
) :<!wrt> [l:addr] (strdup_v (l) | strptr (l)) = "mac#%"
fun strndup
(
  str: string
) :<!wrt> [l:addr] (strdup_v (l) | strptr (l)) = "mac#%"

fun strdup_free
  {l:addr} (pf: strdup_v (l) | x: strptr l):<!wrt> void = "mac#%"
// end of [strdup_free]

(* ****** ****** *)
//
// HX-2013-03:
// strdupa-functions are gcc-functions;
// they use alloca for memory allocation
//
absview strdupa_view (l:addr)
viewdef strdupa_v (l:addr) = strdupa_view (l)

fun strdupa
(
  str: string
) :<!wrt> [l:addr] (strdupa_v (l) | strptr (l)) = "mac#%"
fun strndupa
(
  str: string
) :<!wrt> [l:addr] (strdupa_v (l) | strptr (l)) = "mac#%"

fun strdupa_free
  {l:addr} (pf: strdupa_v (l) | x: strptr l):<!wrt> void = "mac#%"
// end of [strdupa_free]

(* ****** ****** *)

fun strfry {l:agz} (x: !strptr (l) >> _):<!wrt> ptr (l) = "mac#%"

(* ****** ****** *)
//
fun memcpy
  {l:addr}
  {n1,n2:int}
  {n:int | n <= n1; n <= n2}
(
  pf: !b0ytes(n1) @ l >> bytes(n1) @ l
| dst: ptr (l), src: &RD(@[byte][n2]), n: size_t (n)
) :<!wrt> ptr (l) = "mac#%" // end of [memcpy]
//
fun memcpy_unsafe{l:addr}
  (dst: ptr (l), src: ptr, n: size_t):<!wrt> ptr (l) = "mac#%"
//
(* ****** ****** *)
/*
void *memset(void *s, int c, size_t n);
*/
fun memset_unsafe{l:addr}
  (dst: ptr (l), c: int, n: size_t): ptr (l) = "mac#%"
//
(* ****** ****** *)
/*
void *memmove(void *dest, const void *src, size_t n);
*/
fun memmove_unsafe{l:addr}
  (dst: ptr (l), src: ptr, n: size_t):<!wrt> ptr (l) = "mac#%"
//
(* ****** ****** *)
/*
void *memccpy(void *dest, const void *src, int c, size_t n);
*/
fun memccpy_unsafe{l:addr}
  (dst: ptr (l), src: ptr, c: int, n: size_t):<!wrt> Ptr0 = "mac#%"
//
(* ****** ****** *)
//
fun mempcpy
  {l:addr}
  {n1,n2:int}
  {n:int | n <= n1; n <= n2}
(
  pf: !b0ytes(n1) @ l >> bytes(n1) @ l
| dst: ptr (l), src: &RD(@[byte][n2]), n: size_t (n)
) :<!wrt> ptr (l+n) = "mac#%" // end of [mempcpy]
//
fun mempcpy_unsafe{l:addr}{n:int}
  (dst: ptr (l), src: ptr, n: size_t (n)):<!wrt> ptr (l+n) = "mac#%"
//
(* ****** ****** *)
//
// HX: This one is non-reentrant:
//
fun strerror
  (errnum: int):<!ref> [l:agz] vttakeout0 (strptr l) = "mac#%"
// end of [strerror]

(* ****** ****** *)
/*
int strerror_r(int errnum, char *buf, size_t buflen);
*/
fun strerror_r{n:int}
  (errnum: int, buf: &bytes(n), n: size_t (n)):<> int = "mac#%"
// end of [strerror_r]

(* ****** ****** *)

fun strerror_r_gc (errnum: int):<> Strptr1 = "ext#%"

(* ****** ****** *)

(* end of [string.sats] *)