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annotate graal/com.oracle.graal.api.code/src/com/oracle/graal/api/code/VirtualObject.java @ 14160:fd7fcd2d2072

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replaced == with .equals() for comparisons between JavaMethod/JavaField/JavaType values
author Doug Simon <doug.simon@oracle.com>
date Wed, 12 Mar 2014 21:47:35 +0100
parents 8c4a3d9308a7
children c0b8d395368b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2010, 2012, 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 package com.oracle.graal.api.code;
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24
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25 import static com.oracle.graal.api.meta.MetaUtil.*;
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26
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27 import java.util.*;
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28
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29 import com.oracle.graal.api.meta.*;
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30
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31 /**
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32 * An instance of this class represents an object whose allocation was removed by escape analysis.
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33 * The information stored in the {@link VirtualObject} is used during deoptimization to recreate the
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34 * object.
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35 */
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36 public final class VirtualObject extends Value {
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37
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38 private static final long serialVersionUID = -2907197776426346021L;
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39
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40 private final ResolvedJavaType type;
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41 private Value[] values;
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42 private final int id;
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43
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44 /**
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45 * Creates a new {@link VirtualObject} for the given type, with the given fields. If
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46 * {@code type} is an instance class then {@code values} provides the values for the fields
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47 * returned by {@link ResolvedJavaType#getInstanceFields(boolean) getInstanceFields(true)}. If
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48 * {@code type} is an array then the length of the values array determines the reallocated array
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49 * length.
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50 *
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51 * @param type the type of the object whose allocation was removed during compilation. This can
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52 * be either an instance of an array type.
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53 * @param values an array containing all the values to be stored into the object when it is
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54 * recreated
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55 * @param id a unique id that identifies the object within the debug information for one
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56 * position in the compiled code.
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57 * @return a new {@link VirtualObject} instance.
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58 */
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59 public static VirtualObject get(ResolvedJavaType type, Value[] values, int id) {
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60 return new VirtualObject(type, values, id);
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61 }
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62
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63 private VirtualObject(ResolvedJavaType type, Value[] values, int id) {
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64 super(Kind.Object);
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65 this.type = type;
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66 this.values = values;
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67 this.id = id;
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68 }
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69
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70 private static StringBuilder appendValue(StringBuilder buf, Value value, Set<VirtualObject> visited) {
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71 if (value instanceof VirtualObject) {
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72 VirtualObject vo = (VirtualObject) value;
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73 buf.append("vobject:").append(toJavaName(vo.type, false)).append(':').append(vo.id);
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74 if (!visited.contains(vo)) {
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75 visited.add(vo);
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76 buf.append('{');
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77 if (vo.values == null) {
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78 buf.append("<uninitialized>");
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79 } else {
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80 if (vo.type.isArray()) {
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81 for (int i = 0; i < vo.values.length; i++) {
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82 if (i != 0) {
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83 buf.append(',');
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84 }
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85 buf.append(i).append('=');
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86 appendValue(buf, vo.values[i], visited);
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87 }
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88 } else {
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89 ResolvedJavaField[] fields = vo.type.getInstanceFields(true);
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90 assert fields.length == vo.values.length : vo.type + ", fields=" + Arrays.toString(fields) + ", values=" + Arrays.toString(vo.values);
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91 for (int i = 0; i < vo.values.length; i++) {
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92 if (i != 0) {
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93 buf.append(',');
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94 }
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95 buf.append(fields[i].getName()).append('=');
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96 appendValue(buf, vo.values[i], visited);
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97 }
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98 }
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99 }
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100 buf.append('}');
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101 }
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102 } else {
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103 buf.append(value);
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104 }
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105 return buf;
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106 }
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107
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108 @Override
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109 public String toString() {
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110 Set<VirtualObject> visited = Collections.newSetFromMap(new IdentityHashMap<VirtualObject, Boolean>());
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111 return appendValue(new StringBuilder(), this, visited).toString();
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112 }
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113
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114 /**
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115 * Returns the type of the object whose allocation was removed during compilation. This can be
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116 * either an instance of an array type.
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117 */
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118 public ResolvedJavaType getType() {
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119 return type;
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120 }
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121
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122 /**
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123 * Returns an array containing all the values to be stored into the object when it is recreated.
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124 */
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125 public Value[] getValues() {
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126 return values;
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127 }
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128
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129 /**
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130 * Returns the unique id that identifies the object within the debug information for one
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131 * position in the compiled code.
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132 */
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133 public int getId() {
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134 return id;
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135 }
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136
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137 private static boolean checkValues(ResolvedJavaType type, Value[] values) {
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138 if (values != null) {
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06d5f450f32b rename: ResolvedJavaType.isArrayClass() -> ResolvedJavaType.isArray()
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parents: 6959
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139 if (!type.isArray()) {
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140 ResolvedJavaField[] fields = type.getInstanceFields(true);
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141 int fieldIndex = 0;
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142 for (int i = 0; i < values.length; i++) {
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143 ResolvedJavaField field = fields[fieldIndex++];
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144 Kind valKind = values[i].getKind().getStackKind();
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145 if ((valKind == Kind.Double || valKind == Kind.Long) && field.getKind() == Kind.Int) {
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146 assert fields[fieldIndex].getKind() == Kind.Int;
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147 fieldIndex++;
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148 } else {
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149 assert valKind == field.getKind().getStackKind() : field + ": " + valKind + " != " + field.getKind().getStackKind();
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150 }
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151 }
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152 assert fields.length == fieldIndex : type + ": fields=" + Arrays.toString(fields) + ", field values=" + Arrays.toString(values);
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153 } else {
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154 Kind componentKind = type.getComponentType().getKind().getStackKind();
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155 for (int i = 0; i < values.length; i++) {
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ecd5cd2806e8 Relax assertion for virtual array component kind.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 9422
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156 assert values[i].getKind().getStackKind() == componentKind || componentKind.getBitCount() >= values[i].getKind().getStackKind().getBitCount() : values[i].getKind() + " != " +
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157 componentKind;
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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 return true;
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163 }
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164
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165 /**
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166 * Overwrites the current set of values with a new one.
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167 *
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168 * @param values an array containing all the values to be stored into the object when it is
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169 * recreated.
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170 */
5539
bc647d8b0080 Renaming RiValue => Value.
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parents: 5538
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171 public void setValues(Value[] values) {
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172 assert checkValues(type, values);
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173 this.values = values;
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174 }
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175
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176 @Override
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177 public int hashCode() {
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178 return getPlatformKind().hashCode() + type.hashCode();
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179 }
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180
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181 @Override
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182 public boolean equals(Object o) {
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183 if (o == this) {
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184 return true;
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185 }
5547
b6617d13ea44 Dropping Ci* prefixes. Some additional renamings in the api.code interface.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5541
diff changeset
186 if (o instanceof VirtualObject) {
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parents: 5541
diff changeset
187 VirtualObject l = (VirtualObject) o;
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parents: 14157
diff changeset
188 if (!l.type.equals(type) || l.values.length != values.length) {
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189 return false;
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190 }
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191 for (int i = 0; i < values.length; i++) {
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parents: 14157
diff changeset
192 if (!Objects.equals(values[i], l.values[i])) {
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193 return false;
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194 }
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195 }
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196 return true;
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197 }
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198 return false;
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199 }
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200 }