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1 /* |
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2 * Copyright (c) 2009, 2019, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 /* |
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26 * INVOKE_INTERFACE EXPECTED RESULTS |
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27 * |
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28 * Let C be the class of objectref. The actual method to be invoked is selected |
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29 * by the following lookup procedure: |
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30 * - If C contains a declaration for an instance method with the same name |
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31 * and descriptor as the resolved method, then this is the method to be |
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32 * invoked, and the lookup procedure terminates. |
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33 * |
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34 * - Otherwise, if C has a superclass, this same lookup procedure is |
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35 * performed recursively using the direct superclass of C; the method to be |
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36 * invoked is the result of the recursive invocation of this lookup |
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37 * procedure. |
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38 * |
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39 * Otherwise, if the class of objectref does not implement the resolved |
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40 * interface, invokeinterface throws an IncompatibleClassChangeError?. |
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41 * |
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42 * Otherwise, if no method matching the resolved name and descriptor is |
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43 * selected, invokeinterface throws an AbstractMethodError?. |
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44 * |
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45 * Otherwise, if the selected method is not public, invokeinterface throws an |
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46 * IllegalAccessError. Note that it cannot be private because private methods |
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47 * are ignored when searching for an interface method. |
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48 * |
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49 * My translation: |
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50 * 1. Resolve compile-time class/method. |
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51 * 2. Look up runtime class C, if it contains a name/signature match, |
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52 * and it is not private, invoke it. |
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53 * 3. If it does not, recursively lookup direct superclass of C. |
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54 * 4. If selected method is not public, throw IllegalAccessError |
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55 * |
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56 * InvokeInterface Results: |
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57 * - A interface class, declares A.m |
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58 * - A compile-time resolved class |
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59 * - C runtime resolved class |
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60 * - InvokeInterface will ALWAYS invoke C.m if C.m exists and is not private, |
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61 * regardless of overriding or accessibility |
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62 * - InvokeInterface will invoke a non-private B.m if C.m does not exist, |
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63 * regardless of overriding or accessibility |
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64 * |
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65 * Note: assuming Interface is public |
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66 * |
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67 * TODO: member interfaces can be protected and private and have special hiding |
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68 * rules (JLS 8.5) |
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69 */ |
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70 |
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71 package invokeinterface; |
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72 |
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73 import static jdk.internal.org.objectweb.asm.Opcodes.*; |
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74 import shared.AbstractGenerator; |
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75 import shared.AccessType; |
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76 import shared.Utils; |
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77 |
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78 import java.util.HashMap; |
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79 import java.util.Map; |
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80 |
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81 public class Generator extends AbstractGenerator { |
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82 public Generator(String[] args) { |
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83 super(args); |
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84 } |
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85 |
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86 protected Checker getChecker(Class paramClass, Class targetClass) { |
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87 return new Checker(paramClass, targetClass); |
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88 } |
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89 |
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90 public static void main (String[] args) throws Exception { |
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91 new Generator(args).run(); |
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92 } |
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93 |
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94 private void run() throws Exception { |
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95 // Specify package names |
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96 String pkg1 = "a."; |
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97 String pkg2 = "b."; |
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98 String pkg3 = "c."; |
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99 String pkgIntf = "i."; |
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100 String[] packages = new String[] { "", pkg1, pkg2, pkg3, pkgIntf }; |
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101 |
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102 int testNum = 0; |
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103 boolean isPassed = true; |
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104 |
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105 // Hierarchy |
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106 // The following triples will be used during further |
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107 // hierarchy construction and will specify packages for A, B and C |
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108 String[][] packageSets = new String[][] { |
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109 { "", "", "", ""} |
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110 , { "", "", "", pkgIntf } |
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111 |
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112 , { "", pkg1, pkg1, "" } |
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113 , { "", pkg1, pkg1, pkg1 } |
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114 , { "", pkg1, pkg1, pkgIntf } |
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115 |
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116 , { "", pkg1, pkg2, "" } |
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117 , { "", pkg1, pkg2, pkg1} |
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118 , { "", pkg1, pkg2, pkg2} |
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119 , { "", pkg1, pkg2, pkgIntf} |
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120 |
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121 , { pkg1, pkg1, pkg1, pkg1 } |
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122 , { pkg1, pkg1, pkg1, pkgIntf } |
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123 |
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124 , { pkg1, pkg1, pkg2, pkg1 } |
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125 , { pkg1, pkg1, pkg2, pkg2 } |
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126 , { pkg1, pkg1, pkg2, pkgIntf } |
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127 |
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128 , { pkg1, pkg2, pkg1, pkg1 } |
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129 , { pkg1, pkg2, pkg1, pkg2 } |
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130 , { pkg1, pkg2, pkg1, pkgIntf } |
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131 |
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132 , { pkg1, pkg2, pkg2, pkg1 } |
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133 , { pkg1, pkg2, pkg2, pkg2 } |
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134 , { pkg1, pkg2, pkg2, pkgIntf } |
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135 }; |
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136 |
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137 String [] header = new String[] { |
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138 String.format("%30s %68s %25s", "Method access modifiers", "Call site location", "Status") |
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139 , String.format("%5s %-12s %-12s %-12s %-12s %7s %7s %7s %7s %7s %7s %7s" |
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140 , " # " |
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141 , "A.m()" |
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142 , "B.m()" |
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143 , "C.m()" |
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144 , "I.m()" |
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145 , " C " |
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146 , "pkgC " |
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147 , " B " |
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148 , " pkgB" |
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149 , " A " |
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150 , "pkgA" |
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151 , "Intf" |
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152 ) |
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153 , "--------------------------------------------------------------------------------------------------------------------" |
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154 }; |
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155 |
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156 for (String aHeader : header) { |
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157 System.out.println(aHeader); |
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158 } |
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159 |
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160 for (String[] pkgSet : packageSets) { |
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161 String packageA = pkgSet[0]; |
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162 String packageB = pkgSet[1]; |
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163 String packageC = pkgSet[2]; |
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164 |
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165 String packageIntf = pkgSet[3]; |
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166 |
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167 String classNameA = packageA + "A"; |
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168 String classNameB = packageB + "B"; |
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169 String classNameC = packageC + "C"; |
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170 String classNameIntf = packageIntf + "I"; |
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171 |
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172 // For all possible access modifier combinations |
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173 for (AccessType accessA : AccessType.values()) { |
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174 for (AccessType accessB : AccessType.values()) { |
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175 for (AccessType accessC : AccessType.values()) { |
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176 for (AccessType accessIntf : AccessType.values()) { |
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177 |
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178 if (accessIntf == AccessType.UNDEF) { |
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179 continue; |
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180 } |
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181 |
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182 for (int I = 0; I < 4; I++) { |
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183 boolean isAbstractA = ((I & 1) != 0); |
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184 boolean isAbstractB = ((I & 2) != 0); |
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185 |
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186 testNum++; |
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187 |
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188 Map<String, byte[]> classes = new HashMap<String, byte[]>(); |
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189 |
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190 // TODO: add non-PUBLIC interfaces, then particular call sites will affect the results |
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191 |
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192 // Generate interface Intf |
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193 classes.put( |
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194 classNameIntf |
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195 , new ClassGenerator( classNameIntf |
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196 , "java.lang.Object" |
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197 , ACC_ABSTRACT | ACC_INTERFACE | accessIntf.value()) |
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198 .addTargetMethod(AccessType.PUBLIC) |
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199 .getClassFile() |
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200 ); |
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201 |
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202 // Generate class A |
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203 classes.put( |
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204 classNameA |
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205 , new ClassGenerator( classNameA |
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206 , "java.lang.Object" |
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207 , ACC_PUBLIC | ( isAbstractA ? ACC_ABSTRACT : 0)) |
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208 .addTargetMethod(accessA) |
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209 .addCaller(classNameIntf) |
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210 .getClassFile() |
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211 ); |
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212 |
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213 // Generate class B |
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214 classes.put( |
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215 classNameB |
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216 , new ClassGenerator( classNameB |
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217 , classNameA |
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218 , ACC_PUBLIC | ( isAbstractB ? ACC_ABSTRACT : 0) |
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219 , new String[] { Utils.getInternalName(classNameIntf) }) |
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220 .addTargetMethod(accessB) |
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221 .addCaller(classNameIntf) |
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222 .getClassFile() |
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223 ); |
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224 |
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225 // Generate class C |
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226 classes.put( classNameC |
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227 , new ClassGenerator( classNameC, classNameB ) |
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228 .addTargetMethod(accessC) |
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229 .addCaller(classNameIntf) |
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230 .getClassFile() |
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231 ); |
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232 |
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233 // Generate package callers |
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234 for (String pkg : packages) { |
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235 classes.put( pkg+"Caller" |
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236 , new ClassGenerator(pkg+"Caller") |
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237 .addCaller(classNameIntf) |
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238 .getClassFile() |
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239 ); |
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240 } |
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241 |
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242 String caseDescription = |
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243 String.format("%-12s %-12s %-12s %-12s| " |
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244 , (isAbstractA ? "! " : " ") + classNameA + " " + accessA |
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245 , (isAbstractB ? "! " : " ") + classNameB + " " + accessB |
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246 , classNameC + " " + accessC |
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247 , accessIntf + " " + classNameIntf |
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248 ); |
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249 |
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250 String[] callSites = new String[] { |
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251 classNameC |
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252 , packageC+"Caller" |
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253 , classNameB |
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254 , packageB+"Caller" |
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255 , classNameA |
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256 , packageA+"Caller" |
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257 , packageIntf+"Caller" |
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258 }; |
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259 |
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260 boolean result = exec(classes, caseDescription, classNameIntf, classNameC, callSites); |
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261 isPassed = isPassed && result; |
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262 } |
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263 } |
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264 } |
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265 } |
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266 } |
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267 } |
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268 |
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269 // Print footer |
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270 |
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271 for (int i = header.length-1; i >= 0; i--) { |
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272 System.out.println(header[i]); |
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273 } |
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274 |
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275 if (executeTests) { |
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276 System.out.printf("\nEXECUTION STATUS: %s\n", (isPassed? "PASSED" : "FAILED")); |
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277 } |
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278 } |
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279 } |