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