| -- 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; |