1-- Copyright 2008-2024 Free Software Foundation, Inc. 2-- 3-- This program is free software; you can redistribute it and/or modify 4-- it under the terms of the GNU General Public License as published by 5-- the Free Software Foundation; either version 3 of the License, or 6-- (at your option) any later version. 7-- 8-- This program is distributed in the hope that it will be useful, 9-- but WITHOUT ANY WARRANTY; without even the implied warranty of 10-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11-- GNU General Public License for more details. 12-- 13-- You should have received a copy of the GNU General Public License 14-- along with this program. If not, see <http://www.gnu.org/licenses/>. 15 16package body Pck is 17 18 type Data_T is (One, Two, Three); 19 pragma Atomic (Data_T); 20 21 Data_Flag : Data_T := One; 22 23 procedure Increment is 24 begin 25 if Data_Flag = Data_T'Last then 26 Data_Flag := Data_T'First; 27 else 28 Data_Flag := Data_T'Succ (Data_Flag); 29 end if; 30 end Increment; 31 32 function Is_First return Boolean is 33 begin 34 return Data_Flag = Data_T'First; 35 end Is_First; 36 37end Pck; 38