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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;