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------------------------------------------------------------------------------
-- --
-- ASIS Tester And iNTerpreter (ASIStant) COMPONENTS --
-- --
-- A S I S T A N T . I N T E R F A C I N G --
-- --
-- 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 Ada.Exceptions;
with Ada.IO_Exceptions;
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Text_IO;
with Asis.Implementation;
with ASIStant.Text_IO; use ASIStant.Text_IO;
with ASIStant.Batch_IO; use ASIStant.Batch_IO;
with ASIStant.S_Parser; use ASIStant.S_Parser;
with ASIStant.L_Parser; use ASIStant.L_Parser;
with ASIStant.Common; use ASIStant.Common;
with ASIStant.Exec; use ASIStant.Exec;
package body ASIStant.Interfacing is
------------------------------------------------------------------------------
-- This package is an upper-level interface to ASIStant
------------------------------------------------------------------------------
function Parse_Cmd_Line (ScriptName : Wide_String := "";
No_Cmd_Line : Boolean := False) return Integer is
I, J : Integer;
C : Character;
begin
Print_ASIStant_Header;
ATIPut (" Asis Version: ", 3);
ATIPut_Line (Asis.Implementation.ASIS_Version, 3);
ATINew_Line (3);
if ScriptName'Length > 0 then
OpenScript (ScriptName, NORMAL);
end if;
loop
begin
if not Is_Active (CurTokStream) then
if No_Cmd_Line and then Script = 1 and then
ScriptMode /= INACTIVE then
-- The topmost script has just finished
return 1;
end if;
Get_Next_Cmd;
end if;
if ScriptMode = INTERACT then
Ada.Text_IO.Get_Immediate (C);
case C is
when 'C' | 'c' => -- Continue normally
ScriptMode := NORMAL;
when 'P' | 'p' => -- Pause script
Pause_Script;
when 'Q' | 'q' => -- Exit script
raise ASIStant_ERROR;
when others =>
null;
end case;
end if;
Reset_Tree;
I := CurTokStream.Prev_Token_End;
if I < 1 then
I := 1;
else
I := Next_Line (CurTokStream.Text.all
(I .. CurTokStream.Text.all'Last));
if I = 0 then
I := 1;
end if;
end if;
-- Parse statement
Get_Stmt (CurTokStream);
if CurTokStream.Prev_Token_End > 0 then
J := Next_Line (CurTokStream.Text.all
(CurTokStream.Prev_Token_End ..
CurTokStream.Text.all'Last)) - 1;
if I > J then
J := CurTokStream.Text'Last;
end if;
if ScriptMode /= INACTIVE then
ATIPut (CurTokStream.Text (I .. J), 2);
else
ATIPut (CurTokStream.Text (I .. J), 0);
end if;
if CurStat.Free > 1 then
Exec_ATI_Command (1);
if Exec_Result /= -1 then
return Exec_Result;
end if;
end if;
end if;
exception
when Ada.IO_Exceptions.End_Error =>
-- No more input. Exit to avoid endless loop when fed
-- with a file on standard input.
return 0;
when ASIStant_ASIS_ERROR =>
-- all handling is done in ASIStant.Call;
null;
when ASIStant_ERROR =>
if No_Cmd_Line then
return 1;
end if;
-- Purge script if active, otherwise purge command line
if ScriptMode /= INACTIVE then
CloseScript;
else
CurTokStream.Cur_Token_Start := 0;
end if;
when E : others =>
ATIPut_Line (
"Raised unhandled exception " &
To_Wide_String (Ada.Exceptions.Exception_Name (E)), 5);
ATIPut_Line (
" " &
To_Wide_String (Ada.Exceptions.Exception_Message (E)), 5);
if No_Cmd_Line then
return 1;
end if;
-- Purge script if active, otherwise purge command line
if ScriptMode /= INACTIVE then
CloseScript;
else
CurTokStream.Cur_Token_Start := 0;
end if;
end;
end loop;
end Parse_Cmd_Line;
end ASIStant.Interfacing;
|
