gcc/ada/s-string.ads

   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) 1995-2007, 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 2,  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.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 --  Common String access types and related subprograms
  35
  36 --  Note: this package is in the System hierarchy so that it can be directly
  37 --  be used by other predefined packages. User access to this package is via
  38 --  a renaming of this package in GNAT.String (file g-string.ads).
  39
  40 pragma Warnings (Off);
  41 pragma Compiler_Unit;
  42 pragma Warnings (On);
  43
  44 with Ada.Unchecked_Deallocation;
  45
  46 package System.Strings is
  47    pragma Preelaborate;
  48
  49    type String_Access is access all String;
  50    --  General purpose string access type. Note that the caller is
  51    --  responsible for freeing allocated strings to avoid memory leaks.
  52
  53    procedure Free is new Ada.Unchecked_Deallocation
  54      (Object => String, Name => String_Access);
  55    --  This procedure is provided for freeing allocated values of type
  56    --  String_Access.
  57
  58    type String_List is array (Positive range <>) of String_Access;
  59    type String_List_Access is access all String_List;
  60    --  General purpose array and pointer for list of string accesses
  61
  62    procedure Free (Arg : in out String_List_Access);
  63    --  Frees the given array and all strings that its elements reference,
  64    --  and then sets the argument to null. Provided for freeing allocated
  65    --  values of this type.
  66
  67 end System.Strings;