File: asistant-exec.adb

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------------------------------------------------------------------------------
--                                                                          --
--             ASIS Tester And iNTerpreter  (ASIStant) COMPONENTS            --
--                                                                          --
--                        A S I S T A N T . E X E C                         --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright  (c) 1997-2005, 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 ASIStant.Batch_IO; use ASIStant.Batch_IO;
with ASIStant.Text_IO;

with ASIStant.S_Parser, ASIStant.Common, ASIStant.Get, ASIStant.Call;
use  ASIStant.S_Parser, ASIStant.Common, ASIStant.Get, ASIStant.Call;

with ASIStant.Evaluate; use ASIStant.Evaluate;
with ASIStant.Table;    use ASIStant.Table;

with ASIStant.Help, ASIStant.If1, ASIStant.Print, ASIStant.Set;

package body ASIStant.Exec is

------------------------------------------------------------------------------
--  This package executes ASIStant commands
------------------------------------------------------------------------------

   procedure Exec_ATI_Command  (N : Node_Position) is
      i : Integer;
   begin

      Exec_Result := -1;
      case Identify_Function (N) is
         when FT_INFO      => ASIStant.Help.ASISHelp;
         when FT_HELP      => ASIStant.Help.Help (N);

         when FT_CALL      =>
            declare
               QR : constant Query_Result := Evaluate_Node (N);
            begin
               if QR.RType /= Par_Absent then
                  --  ??? Non-empty result is now ignored
                  null;
               end if;
            end;

         when FT_IF       => ASIStant.If1.If1 (N);
         when FT_SET      => ASIStant.Set.Set (N);

         when FT_LOGLEVEL =>
            if CurStat.Tree (N).NValue /= 0 then
               --  Expect integer
               i := Get_Integer (CurStat.Tree (N + 1).NValue);
               if i < 0 or i > 5 then
                  Error (ERR_BADPARAM);
               end if;
               Text_IO.OutputLevel := i;
            else
               Error (ERR_NEEDPARAM);
            end if;

         when FT_LOG      => ASIStant.Batch_IO.Log_IO (N);
         when FT_RUN | FT_IRUN | FT_PAUSE | FT_EXIT
                          => ASIStant.Batch_IO.Script_IO (N);

         when FT_PRINT    => ASIStant.Print.Print (N);
         when FT_PRINTDETAIL =>
            if CurStat.Tree (N).NValue /= 0 then
               --  Expect string
               ASIStant.Print.Print_Detail
                  (Get_String (CurStat.Tree (N + 1).NValue).all);
            else
               Error (ERR_NEEDPARAM);
            end if;

         when FT_QUIT     =>
            if CurStat.Tree (N).NValue /= 0 then
               --  Expect integer
               Exec_Result := Get_Integer (CurStat.Tree (N + 1).NValue);
            else
               Exec_Result := 0;
            end if;
         when others      => null;
      end case;
   end Exec_ATI_Command;

end ASIStant.Exec;