1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--                            S Y S T E M _ I O                             --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1992-2018, 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 3,  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.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32--  A simple text I/O package, used for diagnostic output in the runtime,
33--  This package is also preelaborated, unlike Text_Io, and can thus be
34--  with'ed by preelaborated library units. It includes only Put routines
35--  for character, integer, string and a new line function
36
37package System.IO is
38   pragma Preelaborate;
39
40   procedure Put (X : Integer);
41
42   procedure Put (C : Character);
43
44   procedure Put (S : String);
45   procedure Put_Line (S : String);
46
47   procedure New_Line (Spacing : Positive := 1);
48
49   type File_Type is limited private;
50
51   function Standard_Error return File_Type;
52   function Standard_Output return File_Type;
53
54   procedure Set_Output (File : File_Type);
55
56private
57
58   type File_Type is (Stdout, Stderr);
59   --  Stdout = Standard_Output, Stderr = Standard_Error
60
61   pragma Inline (Standard_Error);
62   pragma Inline (Standard_Output);
63
64end System.IO;
65