37 lines
1.1 KiB
Ada
37 lines
1.1 KiB
Ada
-- Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
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--
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-- This program is free software; you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation; either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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package body Pck is
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type Data_T is (One, Two, Three);
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pragma Atomic (Data_T);
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Data_Flag : Data_T := One;
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procedure Increment is
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begin
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if Data_Flag = Data_T'Last then
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Data_Flag := Data_T'First;
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else
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Data_Flag := Data_T'Succ (Data_Flag);
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end if;
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end Increment;
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function Is_First return Boolean is
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begin
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return Data_Flag = Data_T'First;
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end Is_First;
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end Pck;
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