1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- S Y S T E M . F I N A L I Z A T I O N _ R O O T --
9 -- Copyright (C) 1992-2003 Free Software Foundation, Inc. --
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, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
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. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
35 package System.Finalization_Root is
36 pragma Preelaborate (Finalization_Root);
40 type Finalizable_Ptr is access all Root_Controlled'Class;
42 type Empty_Root_Controlled is abstract tagged null record;
43 -- Just for the sake of Controlled equality (see Ada.Finalization)
45 type Root_Controlled is new Empty_Root_Controlled with record
46 Prev, Next : Finalizable_Ptr;
48 subtype Finalizable is Root_Controlled'Class;
50 procedure Initialize (Object : in out Root_Controlled);
51 procedure Finalize (Object : in out Root_Controlled);
52 procedure Adjust (Object : in out Root_Controlled);
54 procedure Write (Stream : access Ada.Streams.Root_Stream_Type'Class;
55 Item : in Root_Controlled);
56 procedure Read (Stream : access Ada.Streams.Root_Stream_Type'Class;
57 Item : out Root_Controlled);
59 for Root_Controlled'Read use Read;
60 for Root_Controlled'Write use Write;
61 end System.Finalization_Root;