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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 | -- -- | |
4b490c1e | 9 | -- Copyright (C) 1995-2020, Free Software Foundation, Inc. -- |
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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- -- | |
748086b7 | 13 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
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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 -- | |
748086b7 JJ |
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/>. -- | |
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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 | ||
e917e3b8 | 38 | pragma Compiler_Unit_Warning; |
2d9ea47f | 39 | |
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40 | with Ada.Unchecked_Deallocation; |
41 | ||
42 | package 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 | ||
63 | end System.Strings; |