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-- C391001.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 structures nesting discriminated records as

--      components in record extension are correctly supported.  Check

--      for this using limited private structures.

--      Check that record extensions inherit all the visible components

--      of their ancestor types.

--      Check that discriminants are correctly inherited.

--

-- TEST DESCRIPTION:

--      This test defines a textbook object, a serial number plaque.

--      This object is used in each of several other structures modeled

--      after those used in an existing antenna modeling software system.

--      Record types discriminated and undiscriminated are nested to

--      produce a layered design.  Some parametrization is programmatic;

--      some parametrization is data-driven.

--

--

--

-- CHANGE HISTORY:

--      06 Dec 94   SAIC    ACVC 2.0

--      19 Dec 94   SAIC    Removed RM references from objective text.

--      19 Apr 95   SAIC    Added "limited" to full type def of "Object"

--

--!

 package C391001_1 is

   type Object is tagged limited private;

   -- Constructor operation

   procedure Create( The_Plaque : in out Object );

   -- Selector operations

   function "="( Left_Plaque,Right_Plaque : Object ) return Boolean;

   function TC_Match( Left_Plaque : Object; Right_Natural : Natural )

     return Boolean;

   function Serial_Number( A_Plaque : Object ) return Natural;

   Unserialized : exception;  -- Serial_Number called before Create

   Reserialized : exception;  -- Create called twice

 private

   type Object is tagged limited record

     Serial_Number : Natural := 0;

   end record;

 end C391001_1;

 package body C391001_1 is

   Counter : Natural := 0;

   procedure Create( The_Plaque : in out Object ) is

   begin

     if The_Plaque.Serial_Number = 0 then

       Counter := Counter +1;

       The_Plaque.Serial_Number := Counter;

     else

       raise Reserialized;

     end if;

   end Create;

   function "="( Left_Plaque,Right_Plaque : Object ) return Boolean is

   begin

     return (Left_Plaque.Serial_Number = Right_Plaque.Serial_Number)

            and then -- two uninitialized plates are unequal

              (Left_Plaque.Serial_Number /= 0);

   end "=";

   function TC_Match( Left_Plaque : Object; Right_Natural : Natural )

     return Boolean is

   begin

     return (Left_Plaque.Serial_Number = Right_Natural);

   end TC_Match;

   function Serial_Number( A_Plaque : Object ) return Natural is

   begin

     if A_Plaque.Serial_Number = 0 then

       raise Unserialized;

     end if;

     return A_Plaque.Serial_Number;

   end Serial_Number;

 end C391001_1;

 with C391001_1;

 package C391001_2 is -- package Boards is

   package Plaque renames C391001_1;

   type Modes is (Receiving, Transmitting, Standby);

   type Link(Mode: Modes := Standby) is record

     case Mode is

       when Receiving    => TC_R : Integer := 100;

       when Transmitting => TC_T : Integer := 200;

       when Standby      => TC_S : Integer := 300; -- TGA, TSA, SSA

     end case;

   end record;

   type Data_Formats is (S_Band, KU_Band, UHF);

   type Transceiver(Band: Data_Formats) is tagged limited record

     ID : Plaque.Object;

     The_Link: Link;

     case Band is

       when S_Band  => TC_S_Band_Data  : Integer := 1; -- TGA, SSA

       when KU_Band => TC_KU_Band_Data : Integer := 2; -- TSA

       when UHF     => TC_UHF_Data     : Integer := 3;

     end case;

   end record;

 end C391001_2;

 with C391001_1;

 with C391001_2;

 package C391001_3 is -- package Modules

   package Plaque renames C391001_1;

   package Boards renames C391001_2;

   use type Boards.Modes;

   use type Boards.Data_Formats;

   type Command_Formats is ( Set_Compression_Code,

                             Set_Data_Rate,

                             Set_Power_State );

   type Electronics_Module(EBand             : Boards.Data_Formats;

                           The_Command_Format: Command_Formats)

     is new Boards.Transceiver(EBand) with record

       case The_Command_Format is

         when Set_Compression_Code => TC_SCC : Integer := 10; -- SSA

         when Set_Data_Rate        => TC_SDR : Integer := 20; -- TGA

         when Set_Power_State      => TC_SPS : Integer := 30; -- TSA

       end case;

     end record;

 end C391001_3;

 with Report;

 with C391001_1;

 with C391001_2;

 with C391001_3;

 procedure C391001 is

   package Plaque  renames C391001_1;

   package Boards  renames C391001_2;

   package Modules renames C391001_3;

   use type Boards.Modes;

   use type Boards.Data_Formats;

   use type Modules.Command_Formats;

   type Azimuth is range 0..359;

   type Ground_Antenna(The_Band          : Boards.Data_Formats;

                       The_Command_Format: Modules.Command_Formats) is

     record

       ID          : Plaque.Object;

       Electronics : Modules.Electronics_Module(The_Band,The_Command_Format);

       Pointing    : Azimuth;

     end record;

   type Space_Antenna(The_Band    : Boards.Data_Formats := Boards.KU_Band;

                      The_Command : Modules.Command_Formats

                                    := Modules.Set_Power_State)

   is

     record

       ID          : Plaque.Object;

       Electronics : Modules.Electronics_Module(The_Band,The_Command);

     end record;

   The_Ground_Antenna     : Ground_Antenna (Boards.S_Band,

                                            Modules.Set_Data_Rate);

   The_Space_Antenna      : Space_Antenna;

   Space_Station_Antenna  : Space_Antenna  (Boards.S_Band,

                                            Modules.Set_Compression_Code);

   procedure Validate( Condition : Boolean; Message: String ) is

   begin

     if not Condition then

       Report.Failed("Failed " & Message );

     end if;

   end Validate;

 begin

   Report.Test("C391001", "Check nested tagged discriminated "

                        & "record structures");

   Plaque.Create( The_Ground_Antenna.ID );               -- 1

   Plaque.Create( The_Ground_Antenna.Electronics.ID );   -- 2

   Plaque.Create( The_Space_Antenna.ID );                -- 3

   Plaque.Create( The_Space_Antenna.Electronics.ID );    -- 4

   Plaque.Create( Space_Station_Antenna.ID );            -- 5

   Plaque.Create( Space_Station_Antenna.Electronics.ID );-- 6

   The_Ground_Antenna.Pointing := 180;

   Validate( The_Ground_Antenna.The_Band = Boards.S_Band, "TGA discr 1" );

   Validate( The_Ground_Antenna.The_Command_Format = Modules.Set_Data_Rate,

             "TGA discr 2" );

   Validate( Plaque.TC_Match(The_Ground_Antenna.ID,1), "TGA comp 1" );

   Validate( The_Ground_Antenna.Electronics.EBand = Boards.S_Band,

             "TGA comp 2.discr 1" );

   Validate( The_Ground_Antenna.Electronics.The_Command_Format

             = Modules.Set_Data_Rate, "TGA comp 2.discr 2" );

   Validate( The_Ground_Antenna.Electronics.TC_SDR = 20,

             "TGA comp 2.1" );

   Validate( Plaque.TC_Match( The_Ground_Antenna.Electronics.ID, 2 ),

             "TGA comp 2.inher.1" );

   Validate( The_Ground_Antenna.Electronics.The_Link.Mode = Boards.Standby,

             "TGA comp 2.inher.2.discr" );

   Validate( The_Ground_Antenna.Electronics.The_Link.TC_S = 300,

             "TGA comp 2.inher.2.1" );

   Validate( The_Ground_Antenna.Electronics.TC_S_Band_Data = 1,

             "TGA comp 2.inher.3" );

   Validate( The_Ground_Antenna.Pointing = 180, "TGA comp 3" );

   Validate( The_Space_Antenna.The_Band = Boards.KU_Band, "TSA discr 1");

   Validate( The_Space_Antenna.The_Command = Modules.Set_Power_State,

             "TSA discr 2");

   Validate( Plaque.TC_Match(The_Space_Antenna.ID,3),

             "TSA comp 1");

   Validate( The_Space_Antenna.Electronics.EBand = Boards.KU_Band,

             "TSA comp 2.discr 1");

   Validate( The_Space_Antenna.Electronics.The_Command_Format

             = Modules.Set_Power_State,  "TSA comp 2.discr 2");

   Validate( Plaque.TC_Match(The_Space_Antenna.Electronics.ID,4),

             "TSA comp 2.inher.1");

   Validate( The_Space_Antenna.Electronics.The_Link.Mode = Boards.Standby,

             "TSA comp 2.inher.2.discr");

   Validate( The_Space_Antenna.Electronics.The_Link.TC_S = 300,

             "TSA comp 2.inher.2.1");

   Validate( The_Space_Antenna.Electronics.TC_KU_Band_Data = 2,

             "TSA comp 2.inher.3");

   Validate( The_Space_Antenna.Electronics.TC_SPS = 30,

             "TSA comp 2.1");

   Validate( Space_Station_Antenna.The_Band = Boards.S_Band, "SSA discr 1");

   Validate( Space_Station_Antenna.The_Command = Modules.Set_Compression_Code,

             "SSA discr 2");

   Validate( Plaque.TC_Match(Space_Station_Antenna.ID,5),

             "SSA comp 1");

   Validate( Space_Station_Antenna.Electronics.EBand = Boards.S_Band,

             "SSA comp 2.discr 1");

   Validate( Space_Station_Antenna.Electronics.The_Command_Format

             = Modules.Set_Compression_Code,  "SSA comp 2.discr 2");

   Validate( Plaque.TC_Match(Space_Station_Antenna.Electronics.ID,6),

             "SSA comp 2.inher.1");

   Validate( Space_Station_Antenna.Electronics.The_Link.Mode = Boards.Standby,

             "SSA comp 2.inher.2.discr");

   Validate( Space_Station_Antenna.Electronics.The_Link.TC_S = 300,

             "SSA comp 2.inher.2.1");

   Validate( Space_Station_Antenna.Electronics.TC_S_Band_Data = 1,

             "SSA comp 2.inher.3");

   Validate( Space_Station_Antenna.Electronics.TC_SCC = 10,

             "SSA comp 2.1");

   The_Ground_Antenna.Electronics.TC_SDR         := 1001;

   The_Ground_Antenna.Electronics.The_Link       :=

(Boards.Transmitting,2001);

   The_Ground_Antenna.Electronics.TC_S_Band_Data := 3001;

   The_Ground_Antenna.Pointing                   :=   41;

   The_Space_Antenna.Electronics.The_Link        := (Boards.Receiving,1010);

   The_Space_Antenna.Electronics.TC_KU_Band_Data := 2020;

   The_Space_Antenna.Electronics.TC_SPS          := 3030;

   Space_Station_Antenna.Electronics.The_Link

     := The_Space_Antenna.Electronics.The_Link;

   Space_Station_Antenna.Electronics.The_Link.TC_R  := 111;

   Space_Station_Antenna.Electronics.TC_S_Band_Data := 222;

   Space_Station_Antenna.Electronics.TC_SCC         := 333;

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

   begin -- should fail discriminant check

     The_Ground_Antenna.Electronics.TC_SCC := 909;

     Report.Failed("Discriminant check, no exception");

   exception

     when Constraint_Error => null;

     when others =>

          Report.Failed("Discriminant check, wrong exception");

   end;

   Validate( The_Ground_Antenna.Electronics.TC_SDR         = 1001,

             "assigned value 1");

   Validate( The_Ground_Antenna.Electronics.The_Link.Mode

                                            = Boards.Transmitting,

             "assigned value 2.1");

   Validate( The_Ground_Antenna.Electronics.The_Link.TC_T  = 2001,

             "assigned value 2.2");

   Validate( The_Ground_Antenna.Electronics.TC_S_Band_Data = 3001,

             "assigned value 3");

   Validate( The_Ground_Antenna.Pointing                   =   41,

             "assigned value 4");

   Validate( The_Space_Antenna.Electronics.The_Link.Mode   = Boards.Receiving,

             "assigned value 5.1");

   Validate( The_Space_Antenna.Electronics.The_Link.TC_R   = 1010,

             "assigned value 5.2");

   Validate( The_Space_Antenna.Electronics.TC_KU_Band_Data = 2020,

             "assigned value 6");

   Validate( The_Space_Antenna.Electronics.TC_SPS          = 3030,

             "assigned value 7");

   Validate( Space_Station_Antenna.Electronics.The_Link.Mode

                                                 = Boards.Receiving,

             "assigned value 8.1");

   Validate( Space_Station_Antenna.Electronics.The_Link.TC_R  = 111,

             "assigned value 8.2");

   Validate( Space_Station_Antenna.Electronics.TC_S_Band_Data = 222,

             "assigned value 9");

   Validate( Space_Station_Antenna.Electronics.TC_SCC         = 333,

             "assigned value 10");

   Report.Result;

end C391001;