f392a00.a

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-- F392A00.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.
--*
--
-- FOUNDATION DESCRIPTION:
--      This foundation provides a basis for tests needing a hierarchy of
--      types to check object-oriented features.
--
-- CHANGE HISTORY:
--      06 Dec 94   SAIC    ACVC 2.0
--
--!

package F392A00 is          -- package Accounts

   --
   -- Types and subtypes.
   --

   type Dollar_Amount  is new Float; 
   type Interest_Rate  is delta 0.001 range 0.000 .. 1.000;
   type Account_Types  is (Bank, Savings, Preferred, Total);
   type Account_Counter is array (Account_Types) of Integer;
   type Account_Rep is (President, Manager, New_Account_Manager, Teller);

   --
   -- Constants.
   --

   Opening_Balance           : constant Dollar_Amount := 100.00;
   Current_Rate              : constant Interest_Rate := 0.030;
   Preferred_Minimum_Balance : constant Dollar_Amount := 1000.00;

   --
   -- Global Variables
   --

   Bank_Reserve         : Dollar_Amount   := 0.00;
   Daily_Representative : Account_Rep     := New_Account_Manager;
   Number_Of_Accounts   : Account_Counter := (Bank      => 0,
                                              Savings   => 0,
                                              Preferred => 0,
                                              Total     => 0);
   --
   -- Account types and their primitive operations.
   --

   -- Root type.

   type Bank_Account is tagged
      record
         Balance : Dollar_Amount;
      end record;

   -- Primitive operations of Bank_Account.

   procedure Increment_Bank_Reserve (Acct : in     Bank_Account);
   procedure Assign_Representative  (Acct : in     Bank_Account);
   procedure Increment_Counters     (Acct : in     Bank_Account);
   procedure Open                   (Acct : in out Bank_Account);

   --
                          
   type Savings_Account is new Bank_Account with
      record
         Rate : Interest_Rate;
      end record;

   -- Procedure Increment_Bank_Reserve inherited from parent (Bank_Account).

   -- Primitive operations (Overridden).
   procedure Assign_Representative (Acct : in     Savings_Account);
   procedure Increment_Counters    (Acct : in     Savings_Account);
   procedure Open                  (Acct : in out Savings_Account);
                          
   --

   type Preferred_Account is new Savings_Account with
      record
         Minimum_Balance : Dollar_Amount;
      end record;

   -- Procedure Increment_Bank_Reserve inherited twice.
   -- Procedure Assign_Representative inherited from parent (Savings_Account).

   -- Primitive operations (Overridden).
   procedure Increment_Counters (Acct : in     Preferred_Account);
   procedure Open               (Acct : in out Preferred_Account);

   -- Function used to verify Open operation for Preferred_Account objects.
   function Verify_Open (Acct : in Preferred_Account) return Boolean;

   
end F392A00;


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


package body F392A00 is

   --
   -- Primitive operations for Bank_Account.
   --

   procedure Increment_Bank_Reserve (Acct : in Bank_Account) is
   begin
      Bank_Reserve := Bank_Reserve + Acct.Balance;
   end Increment_Bank_Reserve;

   procedure Assign_Representative (Acct : in Bank_Account) is
   begin
      Daily_Representative := Teller;
   end Assign_Representative;

   procedure Increment_Counters (Acct : in Bank_Account) is
   begin
      Number_Of_Accounts (Bank)  := Number_Of_Accounts (Bank) + 1;
      Number_Of_Accounts (Total) := Number_Of_Accounts (Total) + 1;
   end Increment_Counters;

   procedure Open (Acct : in out Bank_Account) is
   begin
      Acct.Balance := Opening_Balance;
   end Open;


   --
   -- Overridden operations for Savings_Account type.
   --

   procedure Assign_Representative (Acct : in Savings_Account) is
   begin
      Daily_Representative := Manager;
   end Assign_Representative;

   procedure Increment_Counters (Acct : in Savings_Account) is
   begin
      Number_Of_Accounts (Savings) := Number_Of_Accounts (Savings) + 1;
      Number_Of_Accounts (Total)   := Number_Of_Accounts (Total) + 1;
   end Increment_Counters;

   procedure Open (Acct : in out Savings_Account) is
   begin
      Open (Bank_Account(Acct));
      Acct.Rate := Current_Rate;
      Acct.Balance := 2.0 * Opening_Balance;
   end Open;
     

   --
   -- Overridden operation for Preferred_Account type.
   --
                     
   procedure Increment_Counters (Acct : in Preferred_Account) is
   begin
      Number_Of_Accounts (Preferred) := Number_Of_Accounts (Preferred) + 1;
      Number_Of_Accounts (Total)     := Number_Of_Accounts (Total) + 1;
   end Increment_Counters;

   procedure Open (Acct : in out Preferred_Account) is
   begin
      Open (Savings_Account(Acct));
      Acct.Minimum_Balance := Preferred_Minimum_Balance;
      Acct.Balance := Acct.Minimum_Balance;
   end Open;

   --
   -- Function used to verify Open operation for Preferred_Account objects.
   --

   function Verify_Open (Acct : in Preferred_Account) return Boolean is
   begin                                                    
      return (Acct.Balance         = Preferred_Minimum_Balance and
              Acct.Rate            = Current_Rate              and
              Acct.Minimum_Balance = Preferred_Minimum_Balance);
   end Verify_Open;

end F392A00;