gcc/ada/a-storio.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --                       A D A . S T O R A G E _ I O                        --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2005, 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 with Unchecked_Conversion;
  35
  36 package body Ada.Storage_IO is
  37
  38    type Buffer_Ptr is access all Buffer_Type;
  39    type Elmt_Ptr   is access all Element_Type;
  40
  41    function To_Buffer_Ptr is new Unchecked_Conversion (Elmt_Ptr, Buffer_Ptr);
  42
  43    ----------
  44    -- Read --
  45    ----------
  46
  47    procedure Read (Buffer : Buffer_Type; Item : out Element_Type) is
  48    begin
  49       To_Buffer_Ptr (Item'Unrestricted_Access).all := Buffer;
  50    end Read;
  51
  52    -----------
  53    -- Write --
  54    -----------
  55
  56    procedure Write (Buffer : out Buffer_Type; Item : Element_Type) is
  57    begin
  58       Buffer := To_Buffer_Ptr (Item'Unrestricted_Access).all;
  59    end Write;
  60
  61 end Ada.Storage_IO;