------------------------------------------------------------------------------
--                                                                          --
--             ASIS Tester And iNTerpreter (ASIStant) COMPONENTS            --
--                                                                          --
--                     A S I S T A N T . T E X T _ I O                      --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--          Copyright (c) 1997-2000, Free Software Foundation, Inc.         --
--                                                                          --
-- ASIStant is free software; you can redistribute it and/or modify it      --
-- under terms of the  GNU General Public License  as published by the Free --
-- Software Foundation;  either version 2,  or  (at your option)  any later --
-- version. ASIStant is distributed  in the hope  that it will be useful,   --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MER-      --
-- CHANTABILITY or  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General  --
-- Public License for more details. You should have received a copy of the  --
-- GNU General Public License distributed with GNAT; see file COPYING. If   --
-- not, write to the Free Software Foundation, 59 Temple Place Suite 330,   --
-- Boston, MA 02111-1307, USA.                                              --
--                                                                          --
-- ASIStant is an evolution of ASIStint tool that was created by            --
-- Vasiliy Fofanov as part of a collaboration between Software Engineering  --
-- Laboratory of the Swiss Federal Institute of Technology in Lausanne,     --
-- Switzerland, and the Scientific Research Computer Center of the Moscow   --
-- University, Russia, supported by the Swiss National Science Foundation   --
-- grant #7SUPJ048247, "Development of ASIS for GNAT with industry quality" --
--                                                                          --
-- ASIStant is distributed as a part of the ASIS implementation for GNAT    --
-- (ASIS-for-GNAT) and is maintained by Ada Core Technologies Inc           --
-- (http://www.gnat.com).                                                   --
------------------------------------------------------------------------------

with Ada.Characters.Handling;
with Ada.Wide_Text_IO;  use Ada.Wide_Text_IO;

with ASIStant.Common, ASIStant.L_Parser;
use  ASIStant.Common, ASIStant.L_Parser;

package ASIStant.Text_IO is

------------------------------------------------------------------------------
--  Text I/O supporting scripts and logs
------------------------------------------------------------------------------

   OutputLevel : Integer := 1;
   --  Output Level can be 0 through 5 and is changed with LOGLEVEL command.
   --  All output with level of not less then OutputLevel is sent to current
   --  log, all other is only displayed if the ConsoleOutputLevel is not more
   --  than the OutputLevel. Levels (default is 1):
   --  Level 5 (always sent to log): ASIS exception handlers; PRINT output.
   --  Level 4: Monitor warnings.
   --  Level 3: Monitor standard messages.
   --  Level 2: Command prompt; input backup.
   --  Level 0: Internal debugging information.
   --  ASIStant keeps track of all I/O throughout the session in the file
   --  SESSION.LOG. OutputLevel is ignored for this file and all level 0
   --  output will be recorded. Therefore, it is not recommended to set
   --  OutputLevel to 0

   ConsoleOutputLevel : Integer := 1;
   --  ConsoleOutputLevel can be 0 through 6 and is changed with -o command
   --  line parameter. All output with level of not less then
   --  ConsoleOutputLevel is displayed. If it is set to 6, nothing is displayed

   procedure ATIGet      (S : out Wide_String; Last : out Integer);
   procedure ATIPut      (S : in  Wide_String; Level : in Integer := 5);
   procedure ATINew_Line (Level : in Integer := 5);
   procedure ATIPut_Line (S : in  Wide_String; Level : in Integer := 5);
   procedure ATIPut      (I : Integer; Level : in Integer := 5);

   type Script_Mode is (INACTIVE, NORMAL, INTERACT);
   procedure OpenScript  (S : in Wide_String; Mode : in Script_Mode);
   procedure CloseScript;
   procedure OpenLog     (S : in Wide_String);
   procedure CloseLog;

   Script         : Natural := 0;
   ScriptStream   : array (1 .. MAX_SCRIPTDEPTH) of Token_Stream;
   Log            : Boolean := False;
   LogFD          : File_Type;

   ScriptMode     : Script_Mode := INACTIVE;
   ScriptModes    : array (1 .. MAX_SCRIPTDEPTH) of Script_Mode;

   Nul_Char       : Wide_Character :=
      Ada.Characters.Handling.To_Wide_Character (ASCII.NUL);

end ASIStant.Text_IO;