1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                       S Y S T E M . S T R I N G S                        --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1995-2013, Free Software Foundation, Inc.         --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32--  Common String access types and related subprograms
33
34--  Note: this package is in the System hierarchy so that it can be directly
35--  be used by other predefined packages. User access to this package is via
36--  a renaming of this package in GNAT.String (file g-string.ads).
37
38pragma Compiler_Unit_Warning;
39
40with Ada.Unchecked_Deallocation;
41
42package System.Strings is
43   pragma Preelaborate;
44
45   type String_Access is access all String;
46   --  General purpose string access type. Note that the caller is
47   --  responsible for freeing allocated strings to avoid memory leaks.
48
49   procedure Free is new Ada.Unchecked_Deallocation
50     (Object => String, Name => String_Access);
51   --  This procedure is provided for freeing allocated values of type
52   --  String_Access.
53
54   type String_List is array (Positive range <>) of String_Access;
55   type String_List_Access is access all String_List;
56   --  General purpose array and pointer for list of string accesses
57
58   procedure Free (Arg : in out String_List_Access);
59   --  Frees the given array and all strings that its elements reference,
60   --  and then sets the argument to null. Provided for freeing allocated
61   --  values of this type.
62
63end System.Strings;
64