gcc/ada/a-sequio.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME COMPONENTS                          --
   4 --                                                                          --
   5 --                    A D A . S E Q U E N T I A L _ I O                     --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --                                                                          --
  10 --          Copyright (C) 1992-1997 Free Software Foundation, Inc.          --
  11 --                                                                          --
  12 -- This specification is derived from the Ada Reference Manual for use with --
  13 -- GNAT. The copyright notice above, and the license provisions that follow --
  14 -- apply solely to the  contents of the part following the private keyword. --
  15 --                                                                          --
  16 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  17 -- terms of the  GNU General Public License as published  by the Free Soft- --
  18 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  19 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  20 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  21 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  22 -- for  more details.  You should have  received  a copy of the GNU General --
  23 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  24 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  25 -- MA 02111-1307, USA.                                                      --
  26 --                                                                          --
  27 -- As a special exception,  if other files  instantiate  generics from this --
  28 -- unit, or you link  this unit with other files  to produce an executable, --
  29 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  30 -- covered  by the  GNU  General  Public  License.  This exception does not --
  31 -- however invalidate  any other reasons why  the executable file  might be --
  32 -- covered by the  GNU Public License.                                      --
  33 --                                                                          --
  34 -- GNAT was originally developed  by the GNAT team at  New York University. --
  35 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  36 --                                                                          --
  37 ------------------------------------------------------------------------------
  38
  39
  40 with Ada.IO_Exceptions;
  41 with System.Sequential_IO;
  42
  43 generic
  44    type Element_Type (<>) is private;
  45
  46 package Ada.Sequential_IO is
  47
  48    type File_Type is limited private;
  49
  50    type File_Mode is (In_File, Out_File, Append_File);
  51
  52    --  The following representation clause allows the use of unchecked
  53    --  conversion for rapid translation between the File_Mode type
  54    --  used in this package and System.File_IO.
  55
  56    for File_Mode use
  57      (In_File     => 0,  -- System.FIle_IO.File_Mode'Pos (In_File)
  58       Out_File    => 2,  -- System.File_IO.File_Mode'Pos (Out_File)
  59       Append_File => 3); -- System.File_IO.File_Mode'Pos (Append_File)
  60
  61    ---------------------
  62    -- File management --
  63    ---------------------
  64
  65    procedure Create
  66      (File : in out File_Type;
  67       Mode : in File_Mode := Out_File;
  68       Name : in String := "";
  69       Form : in String := "");
  70
  71    procedure Open
  72      (File : in out File_Type;
  73       Mode : in File_Mode;
  74       Name : in String;
  75       Form : in String := "");
  76
  77    procedure Close  (File : in out File_Type);
  78    procedure Delete (File : in out File_Type);
  79    procedure Reset  (File : in out File_Type; Mode : in File_Mode);
  80    procedure Reset  (File : in out File_Type);
  81
  82    function Mode    (File : in File_Type) return File_Mode;
  83    function Name    (File : in File_Type) return String;
  84    function Form    (File : in File_Type) return String;
  85
  86    function Is_Open (File : in File_Type) return Boolean;
  87
  88    ---------------------------------
  89    -- Input and output operations --
  90    ---------------------------------
  91
  92    procedure Read  (File : in File_Type; Item : out Element_Type);
  93    procedure Write (File : in File_Type; Item : in Element_Type);
  94
  95    function End_Of_File (File : in File_Type) return Boolean;
  96
  97    ----------------
  98    -- Exceptions --
  99    ----------------
 100
 101    Status_Error : exception renames IO_Exceptions.Status_Error;
 102    Mode_Error   : exception renames IO_Exceptions.Mode_Error;
 103    Name_Error   : exception renames IO_Exceptions.Name_Error;
 104    Use_Error    : exception renames IO_Exceptions.Use_Error;
 105    Device_Error : exception renames IO_Exceptions.Device_Error;
 106    End_Error    : exception renames IO_Exceptions.End_Error;
 107    Data_Error   : exception renames IO_Exceptions.Data_Error;
 108
 109 private
 110    type File_Type is new System.Sequential_IO.File_Type;
 111
 112    --  All subprograms are inlined
 113
 114    pragma Inline (Close);
 115    pragma Inline (Create);
 116    pragma Inline (Delete);
 117    pragma Inline (End_Of_File);
 118    pragma Inline (Form);
 119    pragma Inline (Is_Open);
 120    pragma Inline (Mode);
 121    pragma Inline (Name);
 122    pragma Inline (Open);
 123    pragma Inline (Read);
 124    pragma Inline (Reset);
 125    pragma Inline (Write);
 126
 127 end Ada.Sequential_IO;