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111
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1 -- CC3016F.ADA
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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 -- OFFICE, 3E 114, THE PENTAGON, WASHINGTON DC 20301-3081.
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26
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27 -- OBJECTIVE:
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28 -- CHECK THAT AN INSTANTIATED PACKAGE HAS THE PROPERTIES REQUIRED
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29 -- OF A PACKAGE.
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30
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31 -- CHECK THAT IF THE PARENT TYPE IN A DERIVED TYPE DEFINITION IS
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32 -- A GENERIC FORMAL TYPE, THE OPERATIONS DECLARED FOR THE DERIVED
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33 -- TYPE IN THE TEMPLATE ARE DETERMINED BY THE DECLARATION OF THE
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34 -- FORMAL TYPE. THE OPERATIONS DECLARED FOR DERIVED TYPE IN THE
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35 -- INSTANCE ARE DETERMINED BY THE ACTUAL TYPE DENOTED BY THE FORMAL
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36 -- PARAMETER. SEE AI-00398.
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37
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38 -- HISTORY:
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39 -- DAS 8 OCT 90 INITIAL VERSION.
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40 -- JRL 02/19/93 ADDED USE CLAUSES FOR INSTANCES TO ENSURE DIRECT
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41 -- OPERATOR VISIBILITY. CHANGED NT4'LAST TO P4.NT4'LAST
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42 -- IN ASSIGNMENT STATEMENT FOR P4.X IN EXAMPLE_4.
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43 -- CORRECTED ABE ERRORS IN EXAMPLE_2 AND EXAMPLE_3.
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44 -- CHANGED R3."+" FROM MULTIPLICATION TO SUBTRACTION TO
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45 -- AVOID CONSTRAINT_ERROR.
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46
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47 WITH REPORT;
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48
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49 PROCEDURE CC3016F IS
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50 BEGIN
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51 REPORT.TEST ("CC3016F", "CHECK THAT IF THE PARENT TYPE IN A " &
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52 "DERIVED TYPE DEFINITION IS A GENERIC " &
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53 "FORMAL TYPE, THE OPERATIONS DECLARED " &
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54 "FOR THE DERIVED TYPE IN THE TEMPLATE " &
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55 "ARE DETERMINED BY THE DECLARATION OF " &
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56 "THE FORMAL TYPE, AND THAT THE " &
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57 "OPERATIONS DECLARED FOR THE DERIVED " &
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58 "TYPE IN THE INSTANCE ARE DETERMINED BY " &
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59 "THE ACTUAL TYPE DENOTED BY THE FORMAL " &
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60 "PARAMETER (AI-00398)");
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61 EXAMPLE_2:
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62 DECLARE
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63 GENERIC
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64 TYPE PRIV IS PRIVATE;
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65 PACKAGE GP2 IS
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66 TYPE NT2 IS NEW PRIV;
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67 END GP2;
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68
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69 PACKAGE R2 IS
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70 TYPE T2 IS RANGE 1..10;
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71 FUNCTION F RETURN T2;
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72 END R2;
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73
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74 PACKAGE P2 IS NEW GP2 (PRIV => R2.T2);
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75 USE P2;
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76
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77 XX1 : P2.NT2;
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78 XX2 : P2.NT2;
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79 XX3 : P2.NT2;
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80
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81 PACKAGE BODY R2 IS
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82 FUNCTION F RETURN T2 IS
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83 BEGIN
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84 RETURN T2'LAST;
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85 END F;
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86 END R2;
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87 BEGIN
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88 XX1 := 5; -- IMPLICIT CONVERSION FROM
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89 -- UNIVERSAL INTEGER TO P2.NT2
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90 -- IN P2.
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91 XX2 := XX1 + XX1; -- PREDEFINED "+" DECLARED FOR
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92 -- P2.NT2.
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93 XX3 := P2.F; -- FUNCTION F DERIVED WITH THE
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94 -- INSTANCE.
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95
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96 END EXAMPLE_2;
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97
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98 EXAMPLE_3:
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99 DECLARE
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100 GENERIC
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101 TYPE T3 IS RANGE <>;
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102 PACKAGE GP3 IS
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103 TYPE NT3 IS NEW T3;
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104 X : NT3 := 5;
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105 Y : NT3 := X + 3; -- USES PREDEFINED "+" EVEN IN
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106 -- INSTANCES
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107 END GP3;
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108
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109 PACKAGE R3 IS
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110 TYPE S IS RANGE 1..10;
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111 FUNCTION "+" (LEFT : IN S; RIGHT : IN S) RETURN S;
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112 END R3;
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113
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114 PACKAGE P3 IS NEW GP3 ( T3 => R3.S );
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115 USE P3;
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116
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117 Z : P3.NT3;
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118
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119 PACKAGE BODY R3 IS
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120 FUNCTION "+" (LEFT : IN S; RIGHT : IN S) RETURN S IS
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121 BEGIN -- IMPLEMENT AS SUBTRACTION, NOT ADDITION
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122 RETURN LEFT - RIGHT;
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123 END "+";
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124 END R3;
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125 BEGIN
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126 Z := P3.X + 3; -- USES REDEFINED "+"
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127
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128 IF ( P3.Y /= P3.NT3'(8) ) THEN
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129 REPORT.FAILED ("PREDEFINED ""+"" NOT USED TO COMPUTE " &
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130 "P3.Y");
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131 END IF;
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132
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133 IF (Z /= P3.NT3'(2) ) THEN
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134 REPORT.FAILED ("REDEFINED ""+"" NOT USED TO COMPUTE Z");
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135 END IF;
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136 END EXAMPLE_3;
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137
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138 EXAMPLE_4:
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139 DECLARE
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140 GENERIC
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141 TYPE T4 IS LIMITED PRIVATE;
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142 PACKAGE GP4 IS
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143 TYPE NT4 IS NEW T4;
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144 X : NT4;
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145 END GP4;
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146
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147 PACKAGE P4 IS NEW GP4 (BOOLEAN);
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148 USE P4;
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149
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150 BEGIN
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151 P4.X := P4.NT4'LAST;
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152 IF ( P4.X OR (NOT P4.X) ) THEN
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153 REPORT.COMMENT ("P4.X CORRECTLY HAS A BOOLEAN TYPE");
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154 END IF;
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155 END EXAMPLE_4;
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156
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157 EXAMPLE_5:
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158 DECLARE
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159 GENERIC
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160 TYPE T5 (D : POSITIVE) IS PRIVATE;
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161 PACKAGE GP5 IS
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162 TYPE NT5 IS NEW T5;
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163 X : NT5 (D => 5);
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164 Y : POSITIVE := X.D; -- REFERS TO DISCRIMINANT OF NT5
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165 END GP5;
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166
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167 TYPE REC (A : POSITIVE) IS
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168 RECORD
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169 D : POSITIVE := 7;
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170 END RECORD;
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171 PACKAGE P5 IS NEW GP5 (T5 => REC);
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172 -- P5.Y INITIALIZED WITH VALUE USING COMPONENT SELECTION
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173 -- OPERATION FOR THE DISCRIMINANT, I.E. FOR PARENT TYPE
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174 -- T5 WHICH DENOTES REC.
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175
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176 W1 : POSITIVE := P5.X.D; -- VALUE IS 7
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177 W2 : POSITIVE := P5.X.A; -- VALUE IS 5
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178 W3 : POSITIVE := P5.Y; -- VALUE IS 5;
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179 BEGIN
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180 IF ( ( W1 /= 7 ) OR ( W2 /= 5 ) OR (W3 /= 5 ) ) THEN
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181 REPORT.FAILED ("INCORRECT COMPONENT SELECTION");
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182 END IF;
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183 END EXAMPLE_5;
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184
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185 REPORT.RESULT;
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186
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187 END CC3016F;
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