CristalCaveGem » LustreC » Lustrec-Tests

-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc

-- This file is part of VESTs (Vhdl tESTs).

-- VESTs 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 2 of the License, or (at

-- your option) any later version. 

-- VESTs 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 VESTs; if not, write to the Free Software Foundation,

-- Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 

-- ---------------------------------------------------------------------

--

-- $Id: ch_17_ch_17_03.vhd,v 1.2 2001-10-26 16:29:36 paw Exp $

-- $Revision: 1.2 $

--

-- ---------------------------------------------------------------------

entity ch_17_03 is

end entity ch_17_03;

----------------------------------------------------------------

architecture test of ch_17_03 is

begin

  process is

            type natural_ptr is access natural;

          -- code from book:

          variable count1, count2 : natural_ptr;

          -- end of code from book

  begin

    -- code from book:

    count1 := new natural'(5);

    count2 := new natural'(10);

    count2 := count1;

    count1.all := 20;

    -- end of code from book

    assert

      -- code from book:

      count1 = count2

      -- end of code from book

      ;

    -- code from book:

    count1 := new natural'(30);

    count2 := new natural'(30);

    -- end of code from book

    assert count1 = count2;

    assert

      -- code from book:

      count1.all = count2.all

      -- end of code from book

      ;

    -- code from book:

    if count1 /= null then

      count1.all := count1.all + 1;

    end if;

    -- end of code from book

    wait;

  end process;

end architecture test;