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 --
11 -- Copyright (C) 1992-2000 Free Software Foundation, Inc. --
13 -- GNAT is free software; you can redistribute it and/or modify it under --
14 -- terms of the GNU General Public License as published by the Free Soft- --
15 -- ware Foundation; either version 2, or (at your option) any later ver- --
16 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
17 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
18 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
19 -- for more details. You should have received a copy of the GNU General --
20 -- Public License distributed with GNAT; see file COPYING. If not, write --
21 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
22 -- MA 02111-1307, USA. --
24 -- As a special exception, if other files instantiate generics from this --
25 -- unit, or you link this unit with other files to produce an executable, --
26 -- this unit does not by itself cause the resulting executable to be --
27 -- covered by the GNU General Public License. This exception does not --
28 -- however invalidate any other reasons why the executable file might be --
29 -- covered by the GNU Public License. --
31 -- GNAT was originally developed by the GNAT team at New York University. --
32 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
34 ------------------------------------------------------------------------------
36 package System
.Finalization_Root
is
37 pragma Preelaborate
(Finalization_Root
);
41 type Finalizable_Ptr
is access all Root_Controlled
'Class;
43 type Empty_Root_Controlled
is abstract tagged null record;
44 -- Just for the sake of Controlled equality (see Ada.Finalization)
46 type Root_Controlled
is new Empty_Root_Controlled
with record
47 Prev
, Next
: Finalizable_Ptr
;
49 subtype Finalizable
is Root_Controlled
'Class;
51 procedure Initialize
(Object
: in out Root_Controlled
);
52 procedure Finalize
(Object
: in out Root_Controlled
);
53 procedure Adjust
(Object
: in out Root_Controlled
);
55 procedure Write
(Stream
: access Ada
.Streams
.Root_Stream_Type
'Class;
56 Item
: in Root_Controlled
);
57 procedure Read
(Stream
: access Ada
.Streams
.Root_Stream_Type
'Class;
58 Item
: out Root_Controlled
);
60 for Root_Controlled
'Read use Read
;
61 for Root_Controlled
'Write use Write
;
62 end System
.Finalization_Root
;