(* Copyright (C) 2015 Free Software Foundation, Inc.  *)
(* This file is part of GNU Modula-2.

GNU Modula-2 is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.

GNU Modula-2 is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY 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 along
with gm2; see the file COPYING.  If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.  *)

MODULE tinystate ;


PROCEDURE exit (r: INTEGER) ;
BEGIN
END exit ;

PROCEDURE abort ;
BEGIN
END abort ;

PROCEDURE ExecuteTerminationProcedures ;
BEGIN
END ExecuteTerminationProcedures ;


VAR
   ExitValue,
   exitcode : INTEGER ;
   isHalting,
   CallExit : BOOLEAN ;
BEGIN
   IF exitcode#-1
   THEN
      CallExit := TRUE ;
      ExitValue := exitcode
   END ;
   IF isHalting
   THEN
      (* double HALT found *)
      exit(-1)
   ELSE
      isHalting := TRUE ;
      ExecuteTerminationProcedures ;
   END ;
   IF CallExit
   THEN
      exit(ExitValue)
   ELSE
      abort
   END
END tinystate.