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annotate truffle/com.oracle.truffle.object/src/com/oracle/truffle/object/Transition.java @ 22548:6b76a24fffbd default tip

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author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Thu, 14 Jan 2016 14:20:57 +0100
parents 1b48778cee21
children
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1 /*
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2 * Copyright (c) 2013, 2014, 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.truffle.object;
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24
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25 import java.util.Objects;
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26
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27 import com.oracle.truffle.api.object.ObjectType;
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28 import com.oracle.truffle.api.object.Property;
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29
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30 public abstract class Transition {
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31 @Override
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32 public int hashCode() {
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33 int result = 1;
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34 return result;
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35 }
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36
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37 @Override
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38 public boolean equals(Object obj) {
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39 if (this == obj) {
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40 return true;
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41 }
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42 if (obj == null) {
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43 return false;
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44 }
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45 if (getClass() != obj.getClass()) {
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46 return false;
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47 }
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48 return true;
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49 }
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50
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51 public abstract boolean isDirect();
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52
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53 public abstract static class PropertyTransition extends Transition {
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54 private final Property property;
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55
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56 public PropertyTransition(Property property) {
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57 this.property = property;
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58 }
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59
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60 @Override
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61 public int hashCode() {
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62 final int prime = 31;
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63 int result = super.hashCode();
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64 result = prime * result + ((property == null) ? 0 : property.hashCode());
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65 return result;
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66 }
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67
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68 @Override
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69 public boolean equals(Object obj) {
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70 if (!super.equals(obj)) {
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71 return false;
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72 }
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73 PropertyTransition other = (PropertyTransition) obj;
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74 if (!Objects.equals(property, other.property)) {
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75 return false;
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76 }
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77 return true;
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78 }
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79
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80 public Property getProperty() {
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81 return property;
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82 }
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83 }
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84
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85 public static final class AddPropertyTransition extends PropertyTransition {
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86 public AddPropertyTransition(Property property) {
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87 super(property);
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88 }
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89
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90 @Override
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91 public boolean isDirect() {
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92 return true;
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93 }
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94
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95 @Override
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96 public String toString() {
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97 return String.format("add(%s)", getProperty());
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98 }
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99 }
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100
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101 public static final class RemovePropertyTransition extends PropertyTransition {
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102 public RemovePropertyTransition(Property property) {
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103 super(property);
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104 }
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105
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106 @Override
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107 public boolean isDirect() {
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108 return false;
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109 }
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110
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111 @Override
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112 public String toString() {
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113 return String.format("remove(%s)", getProperty());
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114 }
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115 }
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116
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117 public static final class ObjectTypeTransition extends Transition {
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118 private final ObjectType objectType;
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119
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120 public ObjectTypeTransition(ObjectType objectType) {
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121 this.objectType = objectType;
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122 }
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123
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124 public ObjectType getObjectType() {
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125 return objectType;
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126 }
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127
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128 @Override
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129 public boolean equals(Object other) {
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130 return super.equals(other) && Objects.equals(objectType, ((ObjectTypeTransition) other).objectType);
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131 }
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132
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133 @Override
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134 public int hashCode() {
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135 final int prime = 31;
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136 int result = super.hashCode();
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137 result = prime * result + ((objectType == null) ? 0 : objectType.hashCode());
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138 return result;
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139 }
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140
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141 @Override
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142 public boolean isDirect() {
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143 return true;
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144 }
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145
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146 @Override
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147 public String toString() {
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148 return String.format("objectType(%s)", getObjectType());
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149 }
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150 }
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151
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152 public abstract static class AbstractReplacePropertyTransition extends PropertyTransition {
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153 private final Property after;
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154
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155 public AbstractReplacePropertyTransition(Property before, Property after) {
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156 super(before);
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157 this.after = after;
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158 }
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159
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160 public Property getPropertyBefore() {
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161 return this.getProperty();
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162 }
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163
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164 public Property getPropertyAfter() {
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165 return after;
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166 }
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167
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168 @Override
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169 public boolean equals(Object obj) {
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170 return super.equals(obj) && this.after.equals(((AbstractReplacePropertyTransition) obj).after);
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171 }
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172
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173 @Override
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174 public int hashCode() {
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175 final int prime = 31;
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176 int result = super.hashCode();
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177 result = prime * result + after.hashCode();
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178 return result;
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179 }
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180
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181 @Override
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182 public String toString() {
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183 return String.format("replace(%s,%s)", getPropertyBefore(), getPropertyAfter());
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184 }
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185 }
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186
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187 public static final class IndirectReplacePropertyTransition extends AbstractReplacePropertyTransition {
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188 public IndirectReplacePropertyTransition(Property before, Property after) {
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189 super(before, after);
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190 }
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191
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192 @Override
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193 public boolean isDirect() {
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194 return false;
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195 }
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196 }
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197
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198 public static final class DirectReplacePropertyTransition extends AbstractReplacePropertyTransition {
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199 public DirectReplacePropertyTransition(Property before, Property after) {
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200 super(before, after);
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201 }
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202
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203 @Override
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204 public boolean isDirect() {
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205 return true;
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206 }
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207 }
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208
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209 public static final class ReservePrimitiveArrayTransition extends Transition {
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210 public ReservePrimitiveArrayTransition() {
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211 }
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212
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213 @Override
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214 public boolean isDirect() {
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215 return true;
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216 }
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217 }
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218
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219 public String getShortName() {
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220 return this.getClass().getSimpleName().replaceFirst("Transition$", "").toLowerCase();
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221 }
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222 }