1-- C341A02.A 2 -- 3-- Grant of Unlimited Rights 4-- 5-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, 6-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 7-- unlimited rights in the software and documentation contained herein. 8-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making 9-- this public release, the Government intends to confer upon all 10-- recipients unlimited rights equal to those held by the Government. 11-- These rights include rights to use, duplicate, release or disclose the 12-- released technical data and computer software in whole or in part, in 13-- any manner and for any purpose whatsoever, and to have or permit others 14-- to do so. 15-- 16-- DISCLAIMER 17-- 18-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR 19-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 20-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE 21-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 22-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A 23-- PARTICULAR PURPOSE OF SAID MATERIAL. 24--* 25 -- 26 -- OBJECTIVE: 27 -- Check that class-wide objects can be reassigned with objects from 28 -- the same specific type used to initialize them. 29 -- 30 -- TEST DESCRIPTION: 31 -- Define new objects of specific types from within a class. Reassign 32 -- previously declared class-wide objects with the new specific type 33 -- objects. Check that new assignments were performed. 34 -- 35 -- The particular root and extended types used in this abstraction are 36 -- defined in foundation code (F341A00.A), and are graphically displayed 37 -- as follows: 38 -- 39 -- package Bank 40 -- type Account 41 -- | 42 -- | 43 -- | 44 -- package Checking 45 -- type Account 46 -- | 47 -- | 48 -- | 49 -- package Interest_Checking 50 -- type Account 51 -- 52 -- TEST FILES: 53 -- This test depends on the following foundation code: 54 -- 55 -- F341A00.A 56 -- 57 -- The following files comprise this test: 58 -- 59 -- => C341A02.A 60 -- 61 -- 62-- CHANGE HISTORY: 63-- 06 Dec 94 SAIC ACVC 2.0 64-- 65 --! 66 67 with F341A00_0; -- package Bank 68 with F341A00_1; -- package Checking 69 with F341A00_2; -- package Interest_Checking 70 with Report; 71 72 procedure C341A02 is 73 74 package Bank renames F341A00_0; 75 package Checking renames F341A00_1; 76 package Interest_Checking renames F341A00_2; 77 78 Max_Accts : constant := 3; 79 Bank_Balance : Bank.Dollar_Amount := 0.00; 80 81 -- Define and initialize objects of specific types. 82 B_Acct : aliased Bank.Account := (Current_Balance => 10.00); 83 C_Acct : aliased Checking.Account := (100.00, 10.00); 84 IC_Acct : aliased Interest_Checking.Account := (1000.00, 10.00, 0.030); 85 New_B_Acct : aliased Bank.Account := (Current_Balance => 20.00); 86 New_C_Acct : aliased Checking.Account := (200.00, 20.00); 87 New_IC_Acct : aliased Interest_Checking.Account := (2000.00, 20.00, 0.060); 88 89 90 -- Define and initialize (by direct assignment) objects of a class-wide 91 -- type originating from the root type (Bank.Account). 92 93 type ATM_Card is access all Bank.Account'Class; 94 95 Accounts : array (1 .. Max_Accts) of ATM_Card := 96 (1 => B_Acct'Access, 2 => C_Acct'Access, 3 => IC_Acct'Access); 97 98 New_Accounts : array (1 .. Max_Accts) of ATM_Card := 99 (1 => New_B_Acct'Access, 100 2 => New_C_Acct'Access, 101 3 => New_IC_Acct'Access); 102 103 -- Define an account auditing procedure with a class-wide 104 -- variable that can hold a value of any object within the class, 105 -- and once initialized, can hold other values of the same specific type. 106 107 procedure Audit (Num : in integer; 108 Amt : out Bank.Dollar_Amount) is 109 Account_Being_Audited : Bank.Account'Class := Accounts(Num).all; 110 use type Bank.Dollar_Amount; 111 begin 112 Amt := Account_Being_Audited.Current_Balance; 113 -- Reassign class-wide variable to another object of the type used to 114 -- initialize it. 115 Account_Being_Audited := New_Accounts(Num).all; 116 Amt := Amt + Account_Being_Audited.Current_Balance; -- Reading OUT 117 end Audit; -- parameter. 118 119 120 begin 121 122 Report.Test ("C341A02", "Check that class-wide objects can be " & 123 "reassigned with objects from the same " & 124 "specific type used to initialize them" ); 125 Night_Audit: 126 declare 127 use type Bank.Dollar_Amount; 128 Acct_Value : Bank.Dollar_Amount := 0.00; 129 begin 130 -- Perform nightly audit of total funds on deposit in bank. 131 for i in 1 .. Max_Accts loop 132 Audit (i, Acct_Value); 133 Bank_Balance := Bank_Balance + Acct_Value; 134 end loop; 135 136 if Bank_Balance /= 3330.00 then 137 Report.Failed ("Class-wide object processing failed"); 138 end if; 139 140 end Night_Audit; 141 142 Report.Result; 143 144 end C341A02; 145 146