| -- C392008.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 the use of a class-wide formal parameter allows for the |
| -- proper dispatching of objects to the appropriate implementation of |
| -- a primitive operation. Check this for the case where the root tagged |
| -- type is defined in a package and the extended type is defined in a |
| -- dependent package. |
| -- |
| -- TEST DESCRIPTION: |
| -- Declare a root tagged type, and some associated primitive operations, |
| -- in a visible library package. |
| -- Extend the root type in another visible library package, and override |
| -- one or more primitive operations, inheriting the other primitive |
| -- operations from the root type. |
| -- Derive from the extended type in yet another visible library package, |
| -- again overriding some primitive operations and inheriting others |
| -- (including some that the parent inherited). |
| -- Define subprograms with class-wide parameters, inside of which is a |
| -- call on a dispatching primitive operation. These primitive |
| -- operations modify the objects of the specific class passed as actuals |
| -- to the class-wide formal parameter (class-wide formal parameter has |
| -- mode IN OUT). |
| -- |
| -- The following hierarchy of tagged types and primitive operations is |
| -- utilized in this test: |
| -- |
| -- package Bank |
| -- type Account (root) |
| -- | |
| -- | Operations |
| -- | proc Deposit |
| -- | proc Withdrawal |
| -- | func Balance |
| -- | proc Service_Charge |
| -- | proc Add_Interest |
| -- | proc Open |
| -- | |
| -- package Checking |
| -- type Account (extended from Bank.Account) |
| -- | |
| -- | Operations |
| -- | proc Deposit (inherited) |
| -- | proc Withdrawal (inherited) |
| -- | func Balance (inherited) |
| -- | proc Service_Charge (inherited) |
| -- | proc Add_Interest (inherited) |
| -- | proc Open (overridden) |
| -- | |
| -- package Interest_Checking |
| -- type Account (extended from Checking.Account) |
| -- | |
| -- | Operations |
| -- | proc Deposit (inherited twice - Bank.Acct.) |
| -- | proc Withdrawal (inherited twice - Bank.Acct.) |
| -- | func Balance (inherited twice - Bank.Acct.) |
| -- | proc Service_Charge (inherited twice - Bank.Acct.) |
| -- | proc Add_Interest (overridden) |
| -- | proc Open (overridden) |
| -- | |
| -- |
| -- In this test, we are concerned with the following selection of dispatching |
| -- calls, accomplished with the use of a Bank.Account'Class IN OUT formal |
| -- parameter : |
| -- |
| -- \ Type |
| -- Prim. Op \ Bank.Account Checking.Account Interest_Checking.Account |
| -- \--------------------------------------------------------- |
| |
| -- Service_Charge | X X X |
| -- Add_Interest | X X X |
| -- Open | X X X |
| -- |
| -- |
| -- |
| -- The location of the declaration of the root and derivation of extended |
| -- types will be varied over a series of tests. Locations of declaration |
| -- and derivation for a particular test are marked with an asterisk (*). |
| -- |
| -- Root type: |
| -- |
| -- * Declared in package. |
| -- Declared in generic package. |
| -- |
| -- Extended types: |
| -- |
| -- Derived in parent location. |
| -- Derived in a nested package. |
| -- Derived in a nested subprogram. |
| -- Derived in a nested generic package. |
| -- * Derived in a separate package. |
| -- Derived in a separate visible child package. |
| -- Derived in a separate private child package. |
| -- |
| -- Primitive Operations: |
| -- |
| -- * Procedures with same parameter profile. |
| -- Procedures with different parameter profile. |
| -- Functions with same parameter profile. |
| -- Functions with different parameter profile. |
| -- Mixture of Procedures and Functions. |
| -- |
| -- |
| -- TEST FILES: |
| -- This test depends on the following foundation code: |
| -- |
| -- C392008_0.A |
| -- |
| -- |
| -- CHANGE HISTORY: |
| -- 06 Dec 94 SAIC ACVC 2.0 |
| -- 20 Nov 95 SAIC C392B04 became C392008 for ACVC 2.0.1 |
| -- |
| --! |
| |
| ----------------------------------------------------------------- C392008_0 |
| |
| package C392008_0 is -- package Bank |
| |
| type Dollar_Amount is range -30_000..30_000; |
| |
| 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 C392008_0; |
| |
| -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
| |
| package body C392008_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 |
| 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 C392008_0; |
| |
| ----------------------------------------------------------------- C392008_1 |
| |
| with C392008_0; -- package Bank |
| |
| package C392008_1 is -- package Checking |
| |
| package Bank renames C392008_0; |
| |
| type Account is new Bank.Account with |
| record |
| Overdraft_Fee : Bank.Dollar_Amount; |
| end record; |
| |
| -- Overridden primitive operation. |
| |
| procedure Open (A : in out Account); |
| |
| -- 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); |
| |
| end C392008_1; |
| |
| -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
| |
| package body C392008_1 is |
| |
| -- Overridden primitive operation. |
| |
| procedure Open (A : in out Account) is |
| Check_Guarantee : Bank.Dollar_Amount := 10_00; |
| Initial_Deposit : Bank.Dollar_Amount := 20_00; |
| begin |
| A.Current_Balance := Initial_Deposit; |
| A.Overdraft_Fee := Check_Guarantee; |
| end Open; |
| |
| end C392008_1; |
| |
| ----------------------------------------------------------------- C392008_2 |
| |
| with C392008_0; -- with Bank; |
| with C392008_1; -- with Checking; |
| |
| package C392008_2 is -- package Interest_Checking |
| |
| package Bank renames C392008_0; |
| package Checking renames C392008_1; |
| |
| subtype Interest_Rate is Bank.Dollar_Amount range 0..100; -- was digits 4; |
| |
| Current_Rate : Interest_Rate := 0_02; |
| |
| type Account is new Checking.Account with |
| record |
| Rate : Interest_Rate; |
| end record; |
| |
| -- Overridden primitive operations. |
| |
| procedure Add_Interest (A : in out Account); |
| procedure Open (A : in out Account); |
| |
| -- "Twice" inherited primitive operations (from Bank.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); |
| |
| end C392008_2; |
| |
| -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
| |
| package body C392008_2 is |
| |
| -- Overridden primitive operations. |
| |
| procedure Add_Interest (A : in out Account) is |
| Interest_On_Account : Bank.Dollar_Amount |
| := Bank.Dollar_Amount( Bank."*"( A.Current_Balance, A.Rate )); |
| begin |
| A.Current_Balance := Bank."+"( A.Current_Balance, Interest_On_Account); |
| end Add_Interest; |
| |
| procedure Open (A : in out Account) is |
| Initial_Deposit : Bank.Dollar_Amount := 30_00; |
| begin |
| Checking.Open (Checking.Account (A)); |
| A.Current_Balance := Initial_Deposit; |
| A.Rate := Current_Rate; |
| end Open; |
| |
| end C392008_2; |
| |
| ------------------------------------------------------------------- C392008 |
| |
| with C392008_0; use C392008_0; -- package Bank |
| with C392008_1; use C392008_1; -- package Checking; |
| with C392008_2; use C392008_2; -- package Interest_Checking; |
| with Report; |
| |
| procedure C392008 is |
| |
| package Bank renames C392008_0; |
| package Checking renames C392008_1; |
| package Interest_Checking renames C392008_2; |
| |
| B_Acct : Bank.Account; |
| C_Acct : Checking.Account; |
| IC_Acct : Interest_Checking.Account; |
| |
| -- |
| -- Define procedures with class-wide formal parameters of mode IN OUT. |
| -- |
| |
| -- This procedure will perform a dispatching call on the |
| -- overridden primitive operation Open. |
| |
| procedure New_Account (Acct : in out Bank.Account'Class) is |
| begin |
| Open (Acct); -- Dispatch according to tag of class-wide parameter. |
| end New_Account; |
| |
| -- This procedure will perform a dispatching call on the inherited |
| -- primitive operation (for all types derived from the root Bank.Account) |
| -- Service_Charge. |
| |
| procedure Apply_Service_Charge (Acct: in out Bank.Account'Class) is |
| begin |
| Service_Charge (Acct); -- Dispatch according to tag of class-wide parm. |
| end Apply_Service_Charge; |
| |
| -- This procedure will perform a dispatching call on the |
| -- inherited/overridden primitive operation Add_Interest. |
| |
| procedure Annual_Interest (Acct: in out Bank.Account'Class) is |
| begin |
| Add_Interest (Acct); -- Dispatch according to tag of class-wide parm. |
| end Annual_Interest; |
| |
| begin |
| |
| Report.Test ("C392008", "Check that the use of a class-wide formal " & |
| "parameter allows for the proper dispatching " & |
| "of objects to the appropriate implementation " & |
| "of a primitive operation"); |
| |
| -- Check the dispatch to primitive operations overridden for each |
| -- extended type. |
| New_Account (B_Acct); |
| New_Account (C_Acct); |
| New_Account (IC_Acct); |
| |
| if (B_Acct.Current_Balance /= 10_00) or |
| (C_Acct.Current_Balance /= 20_00) or |
| (IC_Acct.Current_Balance /= 30_00) |
| then |
| Report.Failed ("Failed dispatch to multiply overridden prim. oper."); |
| end if; |
| |
| |
| Annual_Interest (B_Acct); |
| Annual_Interest (C_Acct); |
| Annual_Interest (IC_Acct); -- Check the dispatch to primitive operation |
| -- overridden from a parent type which inherited |
| -- the operation from the root type. |
| if (B_Acct.Current_Balance /= 10_00) or |
| (C_Acct.Current_Balance /= 20_00) or |
| (IC_Acct.Current_Balance /= 90_00) |
| then |
| Report.Failed ("Failed dispatch to overridden primitive operation"); |
| end if; |
| |
| |
| Apply_Service_Charge (Acct => B_Acct); |
| Apply_Service_Charge (Acct => C_Acct); |
| Apply_Service_Charge (Acct => IC_Acct); -- Check the dispatch to a |
| -- primitive operation twice |
| -- inherited from the root |
| -- tagged type. |
| if (B_Acct.Current_Balance /= 5_00) or |
| (C_Acct.Current_Balance /= 15_00) or |
| (IC_Acct.Current_Balance /= 85_00) |
| then |
| Report.Failed ("Failed dispatch to Apply_Service_Charge"); |
| end if; |
| |
| Report.Result; |
| |
| end C392008; |
