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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotTypeUnresolved.java @ 2058:8f033d37798a

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Better support for array types.
author Thomas Wuerthinger <wuerthinger@ssw.jku.at>
date Tue, 18 Jan 2011 10:19:59 +0100
parents 99ad52189524
children f21664b3dd1c 569d3fe7d65c
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1 /*
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2 * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved.
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3 *
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4 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product
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5 * that is described in this document. In particular, and without limitation, these intellectual property
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6 * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or
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7 * more additional patents or pending patent applications in the U.S. and in other countries.
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8 *
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9 * U.S. Government Rights - Commercial software. Government users are subject to the Sun
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10 * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its
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11 * supplements.
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12 *
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13 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or
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14 * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks
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15 * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the
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16 * U.S. and other countries.
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17 *
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18 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open
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19 * Company, Ltd.
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20 */
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21 package com.sun.hotspot.c1x;
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22
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23 import com.sun.cri.ci.*;
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24 import com.sun.cri.ri.*;
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25
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26 /**
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27 * Implementation of RiType for unresolved HotSpot classes.
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28 *
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29 * @author Thomas Wuerthinger, Lukas Stadler
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30 */
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31 public class HotSpotTypeUnresolved extends HotSpotType {
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32
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33 public final String simpleName;
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34 public final int dimensions;
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35
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36 /**
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37 * Creates a new unresolved type for a specified type descriptor.
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38 */
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39 public HotSpotTypeUnresolved(String name) {
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40 assert name.length() > 0 : "name cannot be empty";
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41
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42 int dimensions = 0;
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43 // Decode name if necessary.
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44 if (name.charAt(name.length() - 1) == ';') {
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45 int startIndex = 0;
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46 while (name.charAt(startIndex) == '[') {
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47 startIndex++;
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48 dimensions++;
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49 }
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50 assert name.charAt(startIndex) == 'L';
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51 this.simpleName = name.substring(startIndex + 1, name.length() - 1);
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52 this.name = name;
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53 } else {
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54 this.simpleName = name;
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55 this.name = getFullName(name, dimensions);
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56 }
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57
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58 this.dimensions = dimensions;
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59 }
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60
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61 public HotSpotTypeUnresolved(String name, int dimensions) {
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62 assert dimensions >= 0;
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63 this.simpleName = name;
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64 this.dimensions = dimensions;
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65 this.name = getFullName(name, dimensions);
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66 }
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67
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68 private String getFullName(String name, int dimensions) {
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69 StringBuilder str = new StringBuilder();
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70 for (int i = 0; i < dimensions; i++) {
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71 str.append('[');
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72 }
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73 str.append('L').append(simpleName).append(';');
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74 return str.toString();
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75 }
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76
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77 @Override
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78 public RiType uniqueConcreteSubtype() {
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79 throw unresolved("uniqueConcreteSubtype");
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80 }
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81
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82 @Override
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83 public Class<?> javaClass() {
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84 throw unresolved("javaClass");
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85 }
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86
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87 @Override
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88 public boolean hasSubclass() {
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89 throw unresolved("hasSubclass()");
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90 }
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91
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92 @Override
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93 public boolean hasFinalizer() {
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94 throw unresolved("hasFinalizer()");
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95 }
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96
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97 @Override
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98 public boolean hasFinalizableSubclass() {
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99 throw unresolved("hasFinalizableSubclass()");
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100 }
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101
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102 @Override
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103 public boolean isInterface() {
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104 throw unresolved("isInterface()");
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105 }
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106
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107 @Override
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108 public boolean isArrayClass() {
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109 return dimensions > 0;
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110 }
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111
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112 @Override
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113 public boolean isInstanceClass() {
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114 throw unresolved("isInstanceClass()");
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115 }
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116
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117 @Override
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118 public int accessFlags() {
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119 throw unresolved("accessFlags()");
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120 }
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121
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122 @Override
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123 public boolean isResolved() {
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124 return false;
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125 }
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126
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127 @Override
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128 public boolean isInitialized() {
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129 throw unresolved("isInitialized()");
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130 }
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131
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132 @Override
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133 public boolean isSubtypeOf(RiType other) {
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134 throw unresolved("isSubtypeOf()");
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135 }
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136
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137 @Override
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138 public boolean isInstance(Object obj) {
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139 throw unresolved("isInstance()");
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140 }
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141
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142 @Override
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143 public RiType componentType() {
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144 assert isArrayClass() : "no array class" + name();
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145 return new HotSpotTypeUnresolved(simpleName, dimensions - 1);
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146 }
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147
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148 @Override
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149 public RiType exactType() {
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150 throw unresolved("exactType()");
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151 }
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152
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153 @Override
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154 public RiType arrayOf() {
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155 return new HotSpotTypeUnresolved(simpleName, dimensions + 1);
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156 }
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157
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158 @Override
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159 public RiMethod resolveMethodImpl(RiMethod method) {
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160 throw unresolved("resolveMethodImpl()");
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161 }
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162
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163 @Override
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164 public CiKind kind() {
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165 return CiKind.Object;
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166 }
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167
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168 private CiUnresolvedException unresolved(String operation) {
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169 throw new CiUnresolvedException(operation + " not defined for unresolved class " + simpleName);
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170 }
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171
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172 @Override
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173 public int hashCode() {
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174 return simpleName.hashCode();
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175 }
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176
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177 @Override
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178 public boolean equals(Object o) {
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179 return o == this;
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180 }
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181
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182 @Override
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183 public String toString() {
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184 return "HotSpotType<" + simpleName + ", unresolved>";
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185 }
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186
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187 @Override
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188 public CiConstant getEncoding(RiType.Representation r) {
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189 throw unresolved("getEncoding()");
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190 }
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191
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192 @Override
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193 public CiKind getRepresentationKind(RiType.Representation r) {
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194 return CiKind.Object;
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195 }
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196
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197 }