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-- CA11016.A

--

--                             Grant of Unlimited Rights

--

--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,

--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained

--     unlimited rights in the software and documentation contained herein.

--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making

--     this public release, the Government intends to confer upon all

--     recipients unlimited rights  equal to those held by the Government.

--     These rights include rights to use, duplicate, release or disclose the

--     released technical data and computer software in whole or in part, in

--     any manner and for any purpose whatsoever, and to have or permit others

--     to do so.

--

--                                    DISCLAIMER

--

--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR

--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED

--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE

--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE

--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A

--     PARTICULAR PURPOSE OF SAID MATERIAL.

--*

--

-- OBJECTIVE:

--      Check that a child of a non-generic package can be a private generic

--      package. Check that the private child instance can use its parent's

--      declarations and operations.  Check that the body of a public child

--      package can instantiate its sibling private generic package.

--

-- TEST DESCRIPTION:

--      Declare a map abstraction in a package which manages basic physical

--      map[s].  Declare a private generic child of this package which can be

--      instantiated for any display device which has display locations of

--      the physical map that can be characterized by any integer type, i.e.,

--      the intensity of the display point.

--

--      Declare a public child of the physical map which specifies the

--      display device.  In the body of this child, declare an instance of

--      its generic sibling to display the geographic locations.

--

--      In the main program, check that the operations in the parent, public

--      child and instance of the private child package perform as expected.

--

--

-- CHANGE HISTORY:

--      06 Dec 94   SAIC    ACVC 2.0

--      17 Apr 96   SAIC    ACVC 2.1: Added pragma Elaborate.

--

--!

-- Simulates map of physical features, i.e., desert, forest, or water.

package CA11016_0 is

   type Map_Type is private;

   subtype Latitude is integer range 1 .. 9;

   subtype Longitude is integer range 1 .. 7;

   type Physical_Features is (Desert, Forest, Water);

   -- Use geographic database to initialize the basic map.

   procedure Initialize_Basic_Map (Map  : in out Map_Type);

   function Get_Physical_Feature (Lat  : Latitude;

                                  Long : Longitude;

                                  Map  : Map_Type) return Physical_Features;

private

   type Map_Type is array (Latitude, Longitude) of Physical_Features;

   Basic_Map : Map_Type;

end CA11016_0;

     --==================================================================--

package body CA11016_0 is

   procedure Initialize_Basic_Map (Map : in out Map_Type) is

   -- Not a real initialization.  Real application can use geographic

   -- database to create the basic map.

   begin

      for I in Latitude'first .. Latitude'last loop

         for J in 1 .. 2 loop

            Map (I, J) := Desert;

         end loop;

         for J in 3 .. 4 loop

            Map (I, J) := Forest;

         end loop;

         for J in 5 .. 7 loop

            Map (I, J) := Water;

         end loop;

      end loop;

   end Initialize_Basic_Map;

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

   function Get_Physical_Feature (Lat  : Latitude;

                                  Long : Longitude;

                                  Map  : Map_Type)

     return Physical_Features is

   begin

     return (Map (Lat, Long));

   end Get_Physical_Feature;

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

   begin

      -- Initialize a basic map.

      Initialize_Basic_Map (Basic_Map);

end CA11016_0;

     --==================================================================--

-- Private generic child package of physical map.  This generic package may

-- be instantiated for any display device which has display locations

-- (latitude, longitude) that can be characterized by an integer value.

-- For example, the intensity of the display point might be so characterized.

-- It can be instantiated for any desired range of values (which would

-- correspond to the range accepted by the display device).

private

generic

   type Display_Value is range <>;  -- Any display feature that is

                                    -- represented by an integer.

package CA11016_0.CA11016_1 is

   function Get_Display_Value (Lat  : Latitude;

                               Long : Longitude;

                               Map  : Map_Type) return Display_Value;

end CA11016_0.CA11016_1;

     --==================================================================--

package body CA11016_0.CA11016_1 is

   function Get_Display_Value (Lat  : Latitude;

                               Long : Longitude;

                               Map  : Map_Type)

     return Display_Value is

   begin

      case Get_Physical_Feature (Lat, Long, Map) is

                                          -- Parent's operation,

           when Forest => return (Display_Value'first);

                                          -- Parent's type.

           when Desert => return (Display_Value'last);

                                          -- Parent's type.

           when others => return

                            ( (Display_Value'last - Display_Value'first) / 2 );

                                          -- NOTE: Results are truncated.

      end case;

   end Get_Display_Value;

end CA11016_0.CA11016_1;

     --==================================================================--

-- Map display operation, public child of physical map.

package CA11016_0.CA11016_2 is

   -- Super-duper Ultra Geographic Display Device (SDUGD) can display

   -- geographic locations with light intensity values ranging from 1 to 7.

   type Display_Val is range 1 .. 7;

   type Device_Color is (Brown, Blue, Green);

   type IO_Packet is

      record

         Lat       : Latitude;       -- Parent's type.

         Long      : Longitude;      -- Parent's type.

         Color     : Device_Color;

         Intensity : Display_Val;

      end record;

   procedure Data_For_SDUGD (Lat           : in     Latitude;

                             Long          : in     Longitude;

                             Output_Packet : in out IO_Packet);

end CA11016_0.CA11016_2;

     --==================================================================--

with CA11016_0.CA11016_1;          -- Private generic sibling.

pragma Elaborate (CA11016_0.CA11016_1);

package body CA11016_0.CA11016_2 is

   -- Declare instance of the private generic sibling for

   -- an integer type that represents color intensity.

   package SDUGD is new CA11016_0.CA11016_1 (Display_Val);

   procedure Data_For_SDUGD (Lat           : in     Latitude;

                             Long          : in     Longitude;

                             Output_Packet : in out IO_Packet) is

   -- Simulates sending control information to a display device.

   -- Control information consists of latitude, longitude, a

   -- color, and an intensity.

   begin

      case Get_Physical_Feature (Lat, Long, Basic_Map) is

                                           -- Parent's operation.

         when Water  => Output_Packet.Color     := Blue;

                        Output_Packet.Intensity := SDUGD.Get_Display_Value

                                                   (Lat, Long, Basic_Map);

                                           -- Sibling's operation.

         when Forest => Output_Packet.Color     := Green;

                        Output_Packet.Intensity := SDUGD.Get_Display_Value

                                                   (Lat, Long, Basic_Map);

                                           -- Sibling's operation.

         when others => Output_Packet.Color     := Brown;

                        Output_Packet.Intensity := SDUGD.Get_Display_Value

                                                   (Lat, Long, Basic_Map);

                                           -- Sibling's operation.

       end case;

   end Data_For_SDUGD;

end CA11016_0.CA11016_2;

     --==================================================================--

with CA11016_0.CA11016_2;            -- Map display device operation,

                                     -- implicitly withs parent, physical map

                                     -- application.

use CA11016_0.CA11016_2;             -- Allows direct visibility to the simple

                                     -- name of CA11016_0.CA11016_2.

with Report;

procedure CA11016 is

   TC_Packet : IO_Packet;

begin

   Report.Test ("CA11016", "Check that body of a public child package can " &

                           "use its sibling private generic package "       &

                           "declarations and operations");

-- Simulate control information at coordinates 3 and 7 of the

-- basic map for the SDUGD.

         Water_Display_Subtest:

         begin

            TC_Packet.Lat  := 3;

            TC_Packet.Long := 7;

            -- Build color and light intensity of the basic map at

            -- latitude 3 and longitude 7.

            Data_For_SDUGD (TC_Packet.Lat, TC_Packet.Long, TC_Packet);

            if ( (TC_Packet.Color     /= Blue) or

                 (TC_Packet.Intensity /= 3) ) then

                Report.Failed ("Map display device contains " &

                               "incorrect values for water subtest");

            end if;

         end Water_Display_Subtest;

-- Simulate control information at coordinates 2 and 1 of the

-- basic map for the SDUGD.

         Desert_Display_Subtest:

         begin

            TC_Packet.Lat  := 9;

            TC_Packet.Long := 2;

            -- Build color and light intensity of the basic map at

            -- latitude 9 and longitude 2.

            Data_For_SDUGD (TC_Packet.Lat, TC_Packet.Long, TC_Packet);

            if ( (TC_Packet.Color     /= Brown) or

                 (TC_Packet.Intensity /= 7) ) then

                Report.Failed ("Map display device contains " &

                               "incorrect values for desert subtest");

            end if;

         end Desert_Display_Subtest;

-- Simulate control information at coordinates 8 and 4 of the

-- basic map for the SDUGD.

         Forest_Display_Subtest:

         begin

            TC_Packet.Lat  := 8;

            TC_Packet.Long := 4;

            -- Build color and light intensity of the basic map at

            -- latitude 8 and longitude 4.

            Data_For_SDUGD (TC_Packet.Lat, TC_Packet.Long, TC_Packet);

            if ( (TC_Packet.Color     /= Green) or

                 (TC_Packet.Intensity /= 1) ) then

                Report.Failed ("Map display device contains " &

                               "incorrect values for forest subtest");

            end if;

         end Forest_Display_Subtest;

   Report.Result;

end CA11016;