gcc/ada/s-finroo.adb

   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 --                                                                          --
  10 --           Copyright (C) 1992-2001 Free Software Foundation, Inc.         --
  11 --                                                                          --
  12 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  13 -- terms of the  GNU General Public License as published  by the Free Soft- --
  14 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  15 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  16 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  17 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  18 -- for  more details.  You should have  received  a copy of the GNU General --
  19 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  20 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, USA.                                                      --
  22 --                                                                          --
  23 -- As a special exception,  if other files  instantiate  generics from this --
  24 -- unit, or you link  this unit with other files  to produce an executable, --
  25 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  26 -- covered  by the  GNU  General  Public  License.  This exception does not --
  27 -- however invalidate  any other reasons why  the executable file  might be --
  28 -- covered by the  GNU Public License.                                      --
  29 --                                                                          --
  30 -- GNAT was originally developed  by the GNAT team at  New York University. --
  31 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 package body System.Finalization_Root is
  36
  37    --  It should not be possible to call any of these subprograms
  38
  39    ------------
  40    -- Adjust --
  41    ------------
  42
  43    procedure Adjust (Object : in out Root_Controlled) is
  44    begin
  45       raise Program_Error;
  46    end Adjust;
  47
  48    --------------
  49    -- Finalize --
  50    --------------
  51
  52    procedure Finalize (Object : in out Root_Controlled) is
  53    begin
  54       raise Program_Error;
  55    end Finalize;
  56
  57    ----------------
  58    -- Initialize --
  59    ----------------
  60
  61    procedure Initialize (Object : in out Root_Controlled) is
  62    begin
  63       raise Program_Error;
  64    end Initialize;
  65
  66    ----------
  67    -- Read --
  68    ----------
  69
  70    --  Read and Write must be empty in order to avoid copying the
  71    --  finalization pointers.
  72
  73    pragma Warnings (Off);
  74    --  Suppress warning for out paramater Item which is not assigned
  75    --  because it is pretty much empty.
  76
  77    procedure Read (Stream : access Ada.Streams.Root_Stream_Type'Class;
  78                    Item : out Root_Controlled)
  79    is
  80    begin
  81       null;
  82    end Read;
  83
  84    -----------
  85    -- Write --
  86    -----------
  87
  88    --  Read and Write must be empty in order to avoid copying the
  89    --  finalization pointers.
  90
  91    procedure Write (Stream : access Ada.Streams.Root_Stream_Type'Class;
  92                     Item : in Root_Controlled)
  93    is
  94    begin
  95       null;
  96    end Write;
  97
  98 end System.Finalization_Root;