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111
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1 -- F341A00.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 -- FOUNDATION DESCRIPTION:
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27 -- This foundation provides a simple class hierarchy (a root type and two
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28 -- levels of derivation from it) to use in testing the basic OO features
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29 -- related to tagged types.
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30 --
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31 -- CHANGE HISTORY:
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32 -- 06 Dec 94 SAIC ACVC 2.0
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33 --
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34 --!
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35
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36 package F341A00_0 is -- package Bank
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37
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38 type Dollar_Amount is new Float;
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39
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40 type Account is tagged
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41 record
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42 Current_Balance: Dollar_Amount;
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43 end record;
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44
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45 -- Primitive operations.
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46
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47 procedure Deposit (A : in out Account;
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48 X : in Dollar_Amount);
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49 procedure Withdrawal (A : in out Account;
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50 X : in Dollar_Amount);
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51 function Balance (A : in Account) return Dollar_Amount;
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52 procedure Service_Charge (A : in out Account);
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53 procedure Add_Interest (A : in out Account);
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54 procedure Open (A : in out Account);
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55
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56 end F341A00_0;
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57
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58
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59 --=================================================================--
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60
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61
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62 package body F341A00_0 is
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63
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64 -- Primitive operations for type Account.
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65
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66 procedure Deposit (A : in out Account;
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67 X : in Dollar_Amount) is
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68 begin
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69 A.Current_Balance := A.Current_Balance + X;
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70 end Deposit;
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71
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72 --
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73
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74 procedure Withdrawal (A : in out Account;
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75 X : in Dollar_Amount) is
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76 begin
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77 A.Current_Balance := A.Current_Balance - X;
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78 end Withdrawal;
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79
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80 --
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81
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82 function Balance (A : in Account) return Dollar_Amount is
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83 begin
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84 return (A.Current_Balance);
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85 end Balance;
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86
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87 --
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88
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89 procedure Service_Charge (A : in out Account) is
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90 begin
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91 A.Current_Balance := A.Current_Balance - 5.00;
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92 end Service_Charge;
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93
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94 --
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95
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96 procedure Add_Interest (A : in out Account) is
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97 -- No interest accumulated on this type of account.
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98 Interest_On_Account : Dollar_Amount := 0.00;
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99 begin
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100 A.Current_Balance := A.Current_Balance + Interest_On_Account;
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101 end Add_Interest;
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102
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103 --
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104
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105 procedure Open (A : in out Account) is
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106 Initial_Deposit : Dollar_Amount := 10.00;
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107 begin
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108 A.Current_Balance := Initial_Deposit;
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109 end Open;
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110
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111 end F341A00_0;
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112
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113
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114 --=================================================================--
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115
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116
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117 with F341A00_0;
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118
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119 package F341A00_1 is -- package Checking
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120
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121 package Bank renames F341A00_0;
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122
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123 type Account is new Bank.Account with
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124 record
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125 Overdraft_Fee : Bank.Dollar_Amount;
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126 end record;
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127
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128
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129 -- Inherited primitive operations.
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130 -- procedure Deposit (A : in out Account; X : in Bank.Dollar_Amount);
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131 -- procedure Withdrawal (A : in out Account; X : in Bank.Dollar_Amount);
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132 -- function Balance (A : in Account) return Bank.Dollar_Amount;
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133 -- procedure Service_Charge(A : in out Account);
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134 -- procedure Add_Interest (A : in out Account);
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135
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136 -- Overridden primitive operation.
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137 procedure Open (A : in out Account);
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138
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139 end F341A00_1;
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140
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141
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142 --=================================================================--
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143
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144
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145 package body F341A00_1 is
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146
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147 -- Overridden primitive operation.
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148
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149 procedure Open (A : in out Account) is
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150 Check_Guarantee : Bank.Dollar_Amount := 10.00;
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151 Initial_Deposit : Bank.Dollar_Amount := 100.00;
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152 begin
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153 A.Current_Balance := Initial_Deposit;
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154 A.Overdraft_Fee := Check_Guarantee;
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155 end Open;
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156
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157 end F341A00_1;
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158
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159
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160 --=================================================================--
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161
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162
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163 with F341A00_0; -- package Bank
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164 with F341A00_1; -- package Checking
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165
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166 package F341A00_2 is -- package Interest_Checking
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167
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168 package Bank renames F341A00_0;
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169 package Checking renames F341A00_1;
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170
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171 subtype Interest_Rate is Bank.Dollar_Amount digits 4;
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172
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173 Current_Rate : Interest_Rate := 0.030;
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174
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175 type Account is new Checking.Account with
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176 record
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177 Rate : Interest_Rate;
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178 end record;
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179
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180 -- "Twice" inherited primitive operations (Bank.Account, Checking.Account)
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181 -- procedure Deposit (A : in out Account; X : in Bank.Dollar_Amount);
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182 -- procedure Withdrawal (A : in out Account; X : in Bank.Dollar_Amount);
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183 -- function Balance (A : in Account) return Bank.Dollar_Amount;
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184 -- procedure Service_Charge(A : in out Account);
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185
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186 -- Overridden primitive operations.
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187 procedure Add_Interest (A : in out Account);
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188 procedure Open (A : in out Account);
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189
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190 end F341A00_2;
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191
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192
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193 --=================================================================--
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194
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195
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196 package body F341A00_2 is
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197
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198 -- Overridden primitive operations.
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199
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200 procedure Add_Interest (A : in out Account) is
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201 use type Bank.Dollar_Amount;
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202 Interest_On_Account : Bank.Dollar_Amount
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203 := Bank.Dollar_Amount(A.Current_Balance * A.Rate);
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204 begin
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205 A.Current_Balance := A.Current_Balance + Interest_On_Account;
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206 end Add_Interest;
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207
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208 procedure Open (A : in out Account) is
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209 Initial_Deposit : Bank.Dollar_Amount := 1000.00;
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210 begin
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211 Checking.Open (Checking.Account (A));
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212 A.Current_Balance := Initial_Deposit;
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213 A.Rate := Current_Rate;
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214 end Open;
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215
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216 end F341A00_2;
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