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-- F341A00.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 simple class hierarchy (a root type and two

--      levels of derivation from it) to use in testing the basic OO features

--      related to tagged types.

--

-- CHANGE HISTORY:

--      06 Dec 94   SAIC    ACVC 2.0

--

--!

package F341A00_0 is   -- package Bank

  type Dollar_Amount  is new Float;

   type Account is tagged

      record

        Current_Balance: Dollar_Amount;

      end record;

   -- Primitive operations.

   procedure Deposit        (A : in out Account;

                             X : in     Dollar_Amount);

   procedure Withdrawal     (A : in out Account;

                             X : in     Dollar_Amount);

   function  Balance        (A : in     Account) return Dollar_Amount;

   procedure Service_Charge (A : in out Account);

   procedure Add_Interest   (A : in out Account);

   procedure Open           (A : in out Account);

end F341A00_0;

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

package body F341A00_0 is

   -- Primitive operations for type Account.

   procedure Deposit (A : in out Account;

                      X : in     Dollar_Amount) is

   begin

      A.Current_Balance := A.Current_Balance + X;

   end Deposit;

   --

   procedure Withdrawal (A : in out Account;

                         X : in     Dollar_Amount) is

   begin

      A.Current_Balance := A.Current_Balance - X;

   end Withdrawal;

   --

   function  Balance (A : in     Account) return Dollar_Amount is

   begin

      return (A.Current_Balance);

   end Balance;

   --

   procedure Service_Charge (A : in out Account) is

   begin

      A.Current_Balance := A.Current_Balance - 5.00;

   end Service_Charge;

   --

   procedure Add_Interest (A : in out Account) is

      -- No interest accumulated on this type of account.

      Interest_On_Account : Dollar_Amount := 0.00;

   begin

      A.Current_Balance := A.Current_Balance + Interest_On_Account;

   end Add_Interest;

   --

   procedure Open (A : in out Account) is

      Initial_Deposit : Dollar_Amount := 10.00;

   begin

      A.Current_Balance := Initial_Deposit;

   end Open;

end F341A00_0;

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

with F341A00_0;

package F341A00_1 is    -- package Checking

   package Bank renames F341A00_0;

   type Account is new Bank.Account with

      record

         Overdraft_Fee : Bank.Dollar_Amount;

      end record;

   -- Inherited primitive operations.

   -- procedure Deposit       (A : in out Account; X : in Bank.Dollar_Amount);

   -- procedure Withdrawal    (A : in out Account; X : in Bank.Dollar_Amount);

   -- function  Balance       (A : in     Account) return Bank.Dollar_Amount;

   -- procedure Service_Charge(A : in out Account);

   -- procedure Add_Interest  (A : in out Account);

   -- Overridden primitive operation.

   procedure Open (A : in out Account);

end F341A00_1;

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

package body F341A00_1 is

   -- Overridden primitive operation.

   procedure Open (A : in out Account) is

      Check_Guarantee : Bank.Dollar_Amount :=  10.00;

      Initial_Deposit : Bank.Dollar_Amount := 100.00;

   begin

      A.Current_Balance := Initial_Deposit;

      A.Overdraft_Fee   := Check_Guarantee;

   end Open;

end F341A00_1;

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

with F341A00_0;  -- package Bank

with F341A00_1;  -- package Checking

package F341A00_2 is    -- package Interest_Checking

   package Bank     renames F341A00_0;

   package Checking renames F341A00_1;

   subtype Interest_Rate is Bank.Dollar_Amount digits 4;

   Current_Rate : Interest_Rate := 0.030;

   type Account is new Checking.Account with

      record

         Rate : Interest_Rate;

      end record;

   -- "Twice" inherited primitive operations (Bank.Account, Checking.Account)

   -- procedure Deposit       (A : in out Account; X : in Bank.Dollar_Amount);

   -- procedure Withdrawal    (A : in out Account; X : in Bank.Dollar_Amount);

   -- function  Balance       (A : in     Account) return Bank.Dollar_Amount;

   -- procedure Service_Charge(A : in out Account);

   -- Overridden primitive operations.

   procedure Add_Interest (A : in out Account);

   procedure Open         (A : in out Account);

end F341A00_2;

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

package body F341A00_2 is

   -- Overridden primitive operations.

   procedure Add_Interest (A : in out Account) is

      use type Bank.Dollar_Amount;

      Interest_On_Account : Bank.Dollar_Amount

                          := Bank.Dollar_Amount(A.Current_Balance * A.Rate);

   begin

      A.Current_Balance := A.Current_Balance + Interest_On_Account;

   end Add_Interest;

   procedure Open (A : in out Account) is

      Initial_Deposit : Bank.Dollar_Amount := 1000.00;

   begin

      Checking.Open (Checking.Account (A));

      A.Current_Balance := Initial_Deposit;

      A.Rate            := Current_Rate;

   end Open;

end F341A00_2;