1-- C341A03.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 an object of one class-wide type can initialize a 28-- class-wide object of a different type when the operation is embedded 29-- in a generic unit. 30-- 31-- TEST DESCRIPTION: 32-- Declare specific-type objects of an extended type. Declare an array 33-- of access values designating class-wide objects, initialized to point 34-- to the objects of the specific type. Define a generic subprogram 35-- having a generic formal derived type parameter. Within the generic, 36-- declare a class-wide variable of the formal parameter type. Verify 37-- that the variable can be initialized with the value of an object 38-- of another class-wide type within the class. 39-- 40-- The particular root and extended types used in this abstraction are 41-- defined in foundation code (F341A00.A), and are graphically displayed 42-- as follows: 43-- 44-- package Bank 45-- type Account 46-- | 47-- | 48-- | 49-- package Checking 50-- type Account 51-- | 52-- | 53-- | 54-- package Interest_Checking 55-- type Account 56-- 57-- TEST FILES: 58-- This test depends on the following foundation code: 59-- 60-- F341A00.A 61-- 62-- 63-- CHANGE HISTORY: 64-- 06 Dec 94 SAIC ACVC 2.0 65-- 16 Dec 94 SAIC Changed level of 'Class for ATM_Card 66-- 67--! 68 69with F341A00_0; -- package Bank 70generic 71 type Account_Type is new F341A00_0.Account with private; -- new Bank.Account 72function C341A03_0 (The_Account : Account_Type'Class) -- function Audit 73 return F341A00_0.Dollar_Amount; 74 75function C341A03_0 (The_Account : Account_Type'Class) 76 return F341A00_0.Dollar_Amount is 77 Acct : Account_Type'Class := The_Account; -- Init. of class-wide with 78begin -- another class-wide object. 79 return Acct.Current_Balance; 80end C341A03_0; 81 82 83 --=================================================================-- 84 85 86with F341A00_0; -- package Bank 87with F341A00_1; -- package Checking 88with C341A03_0; -- generic function Audit 89with Report; 90 91procedure C341A03 is 92 93 package Bank renames F341A00_0; 94 package Checking renames F341A00_1; 95 96 Current_Checking_Accounts : constant := 3; 97 98 Checking_Acct1 : aliased Checking.Account := (Current_Balance => 10.00, 99 Overdraft_Fee => 5.00); 100 Checking_Acct2 : aliased Checking.Account := (Current_Balance => 20.00, 101 Overdraft_Fee => 5.00); 102 Checking_Acct3 : aliased Checking.Account := (Current_Balance => 30.00, 103 Overdraft_Fee => 5.00); 104 105 type ATM_Card is access all Checking.Account'Class; 106 107 -- Declare array of accesses to class-wide objects. 108 Account_Array : array (1 .. Current_Checking_Accounts) of 109 ATM_Card := (Checking_Acct1'Access, 110 Checking_Acct2'Access, 111 Checking_Acct3'Access); 112begin -- C341A03 113 114 Report.Test ("C341A03", "Check that an object of one class-wide type " & 115 "can initialize a class-wide object of a " & 116 "different type when the operation is embedded " & 117 "in a generic unit" ); 118 119 Audit_Checking_Accounts: 120 declare 121 Balance_In_Checking_Accounts : Bank.Dollar_Amount := 0.00; 122 -- Instantiate with a specific extended type. 123 function Checking_Audit is new C341A03_0 (Checking.Account); 124 use type Bank.Dollar_Amount; 125 begin 126 127 for I in 1 .. Current_Checking_Accounts loop 128 Balance_In_Checking_Accounts := Balance_In_Checking_Accounts + 129 Checking_Audit (Account_Array (I).all); 130 end loop; 131 132 if Balance_In_Checking_Accounts /= 60.00 then 133 Report.Failed ("Incorrect initialization of class-wide object"); 134 end if; 135 136 end Audit_Checking_Accounts; 137 138 Report.Result; 139 140end C341A03; 141