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   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                S Y S T E M . F I N A L I Z A T I O N _ R O O T           --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2011, 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 --  This unit provides the basic support for controlled (finalizable) types
  33
  34 with Ada.Streams;
  35
  36 package System.Finalization_Root is
  37    pragma Preelaborate;
  38
  39    --  The base for types Controlled and Limited_Controlled declared in Ada.
  40    --  Finalization.
  41
  42    type Root_Controlled is tagged null record;
  43
  44    procedure Adjust     (Object : in out Root_Controlled);
  45    procedure Finalize   (Object : in out Root_Controlled);
  46    procedure Initialize (Object : in out Root_Controlled);
  47
  48    package Stream_Attributes is
  49       procedure Read
  50         (Stream : not null access Ada.Streams.Root_Stream_Type'Class;
  51          Item   : out Root_Controlled) is null;
  52
  53       procedure Write
  54         (Stream : not null access Ada.Streams.Root_Stream_Type'Class;
  55          Item   : Root_Controlled) is null;
  56    end Stream_Attributes;
  57
  58    for Root_Controlled'Read  use Stream_Attributes.Read;
  59    for Root_Controlled'Write use Stream_Attributes.Write;
  60 end System.Finalization_Root;