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1 -- C392A01.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 the use of a class-wide formal parameter allows for the
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28 -- proper dispatching of objects to the appropriate implementation of
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29 -- a primitive operation. Check this for the root tagged type defined
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30 -- in a package, and the extended type is defined in that same package.
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31 --
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32 -- TEST DESCRIPTION:
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33 -- Declare a root tagged type, and some associated primitive operations.
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34 -- Extend the root type, and override one or more primitive operations,
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35 -- inheriting the other primitive operations from the root type.
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36 -- Derive from the extended type, again overriding some primitive
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37 -- operations and inheriting others (including some that the parent
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38 -- inherited).
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39 -- Define a subprogram with a class-wide parameter, inside of which is a
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40 -- call on a dispatching primitive operation. These primitive operations
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41 -- modify global variables (the class-wide parameter has mode IN).
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42 --
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43 --
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44 --
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45 -- The following hierarchy of tagged types and primitive operations is
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46 -- utilized in this test:
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47 --
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48 -- type Bank_Account (root)
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49 -- |
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50 -- | Operations
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51 -- | Increment_Bank_Reserve
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52 -- | Assign_Representative
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53 -- | Increment_Counters
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54 -- | Open
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55 -- |
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56 -- type Savings_Account (extended from Bank_Account)
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57 -- |
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58 -- | Operations
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59 -- | (Increment_Bank_Reserve) (inherited)
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60 -- | Assign_Representative (overridden)
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61 -- | Increment_Counters (overridden)
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62 -- | Open (overridden)
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63 -- |
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64 -- type Preferred_Account (extended from Savings_Account)
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65 -- |
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66 -- | Operations
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67 -- | (Increment_Bank_Reserve) (inherited twice - Bank_Acct.)
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68 -- | (Assign_Representative) (inherited - Savings_Acct.)
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69 -- | Increment_Counters (overridden)
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70 -- | Open (overridden)
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71 --
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72 --
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73 -- In this test, we are concerned with the following selection of dispatching
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74 -- calls, accomplished with the use of a Bank_Account'Class IN procedure
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75 -- parameter :
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76 --
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77 -- \ Type
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78 -- Prim. Op \ Bank_Account Savings_Account Preferred_Account
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79 -- \------------------------------------------------
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80 -- Increment_Bank_Reserve| X X X
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81 -- Assign_Representative | X
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82 -- Increment_Counters | X X X
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83 --
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84 --
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85 --
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86 -- The location of the declaration and derivation of the root and extended
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87 -- types will be varied over a series of tests. Locations of declaration
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88 -- and derivation for a particular test are marked with an asterisk (*).
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89 --
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90 -- Root type:
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91 --
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92 -- * Declared in package.
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93 -- Declared in generic package.
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94 --
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95 -- Extended types:
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96 --
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97 -- * Derived in parent location.
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98 -- Derived in a nested package.
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99 -- Derived in a nested subprogram.
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100 -- Derived in a nested generic package.
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101 -- Derived in a separate package.
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102 -- Derived in a separate visible child package.
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103 -- Derived in a separate private child package.
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104 --
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105 -- Primitive Operations:
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106 --
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107 -- * Procedures with same parameter profile.
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108 -- Procedures with different parameter profile.
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109 -- Functions with same parameter profile.
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110 -- Functions with different parameter profile.
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111 -- Mixture of Procedures and Functions.
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112 --
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113 --
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114 -- TEST FILES:
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115 -- This test depends on the following foundation code:
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116 --
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117 -- F392A00.A
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118 --
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119 -- The following files comprise this test:
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120 --
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121 -- => C392A01.A
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122 --
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123 --
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124 -- CHANGE HISTORY:
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125 -- 06 Dec 94 SAIC ACVC 2.0
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126 --
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127 --!
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128
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129 with F392A00; -- package Accounts
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130 with Report;
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131
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132 procedure C392A01 is
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133
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134 package Accounts renames F392A00;
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135
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136 -- Declare account objects.
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137
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138 B_Account : Accounts.Bank_Account;
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139 S_Account : Accounts.Savings_Account;
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140 P_Account : Accounts.Preferred_Account;
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141
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142 -- Procedures to operate on accounts.
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143 -- Each uses a class-wide IN parameter, as well as a call to a
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144 -- dispatching operation.
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145
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146 -- Procedure Tabulate_Account performs a dispatching call on a primitive
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147 -- operation that has been overridden for each of the extended types.
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148
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149 procedure Tabulate_Account (Acct : in Accounts.Bank_Account'Class) is
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150 begin
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151 Accounts.Increment_Counters (Acct); -- Dispatch according to tag.
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152 end Tabulate_Account;
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153
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154
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155 -- Procedure Accumulate_Reserve performs a dispatching call on a
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156 -- primitive operation that has been defined for the root type and
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157 -- inherited by each derived type.
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158
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159 procedure Accumulate_Reserve (Acct : in Accounts.Bank_Account'Class) is
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160 begin
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161 Accounts.Increment_Bank_Reserve (Acct); -- Dispatch according to tag.
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162 end Accumulate_Reserve;
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163
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164
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165 -- Procedure Resolve_Dispute performs a dispatching call on a primitive
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166 -- operation that has been defined in the root type, overridden in the
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167 -- first derived extended type, and inherited by the subsequent extended
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168 -- type.
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169
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170 procedure Resolve_Dispute (Acct : in Accounts.Bank_Account'Class) is
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171 begin
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172 Accounts.Assign_Representative (Acct); -- Dispatch according to tag.
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173 end Resolve_Dispute;
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174
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175
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176
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177 begin -- Main test procedure.
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178
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179 Report.Test ("C392A01", "Check that the use of a class-wide parameter " &
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180 "allows for proper dispatching where root type " &
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181 "and extended types are declared in the same " &
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182 "package" );
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183
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184 Bank_Account_Subtest:
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185 declare
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186 use Accounts;
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187 begin
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188 Accounts.Open (B_Account);
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189
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190 -- Demonstrate class-wide parameter allowing dispatch by a primitive
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191 -- operation that has been defined for this specific type.
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192 Accumulate_Reserve (Acct => B_Account);
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193 Tabulate_Account (B_Account);
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194
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195 if (Accounts.Bank_Reserve /= Accounts.Opening_Balance) or
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196 (Accounts.Number_Of_Accounts (Bank) /= 1) or
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197 (Accounts.Number_Of_Accounts (Total) /= 1)
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198 then
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199 Report.Failed ("Failed in Bank_Account_Subtest");
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200 end if;
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201
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202 end Bank_Account_Subtest;
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203
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204
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205 Savings_Account_Subtest:
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206 declare
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207 use Accounts;
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208 begin
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209 Accounts.Open (Acct => S_Account);
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210
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211 -- Demonstrate class-wide parameter allowing dispatch by a primitive
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212 -- operation that has been inherited by this extended type.
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213 Accumulate_Reserve (Acct => S_Account);
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214
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215 -- Demonstrate class-wide parameter allowing dispatch by a primitive
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216 -- operation that has been overridden for this extended type.
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217 Resolve_Dispute (Acct => S_Account);
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218 Tabulate_Account (S_Account);
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219
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220 if Accounts.Bank_Reserve /= (3.0 * Accounts.Opening_Balance) or
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221 Accounts.Daily_Representative /= Accounts.Manager or
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222 Accounts.Number_Of_Accounts (Savings) /= 1 or
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223 Accounts.Number_Of_Accounts (Total) /= 2
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224 then
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225 Report.Failed ("Failed in Savings_Account_Subtest");
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226 end if;
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227
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228 end Savings_Account_Subtest;
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229
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230
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231 Preferred_Account_Subtest:
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232 declare
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233 use Accounts;
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234 begin
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235 Accounts.Open (P_Account);
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236
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237 -- Verify that the correct implementation of Open (overridden) was
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238 -- used for the Preferred_Account object.
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239 if not Accounts.Verify_Open (P_Account) then
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240 Report.Failed ("Incorrect values for init. Preferred Acct object");
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241 end if;
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242
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243 -- Demonstrate class-wide parameter allowing dispatch by a primitive
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244 -- operation that has been twice inherited by this extended type.
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245 Accumulate_Reserve (Acct => P_Account);
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246
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247 -- Demonstrate class-wide parameter allowing dispatch by a primitive
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248 -- operation that has been overridden for this extended type (the
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249 -- operation was overridden by its parent type as well).
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250 Tabulate_Account (P_Account);
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251
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252 if Accounts.Bank_Reserve /= 1300.00 or
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253 Accounts.Number_Of_Accounts (Preferred) /= 1 or
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254 Accounts.Number_Of_Accounts (Total) /= 3
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255 then
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256 Report.Failed ("Failed in Preferred_Account_Subtest");
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257 end if;
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258
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259 end Preferred_Account_Subtest;
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260
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261
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262 Report.Result;
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263
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264 end C392A01;
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265
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