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annotate graal/com.oracle.truffle.object/src/com/oracle/truffle/object/Transition.java @ 18625:073e7f314516

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OM: add Transition#isDirect()
author Andreas Woess <andreas.woess@jku.at>
date Thu, 04 Dec 2014 19:24:14 +0100
parents b3b241bbbbdb
children ce46f909c176
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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.*;
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26
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27 import com.oracle.truffle.api.object.*;
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28
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29 public abstract class Transition {
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30 @Override
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31 public int hashCode() {
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32 int result = 1;
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33 return result;
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34 }
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35
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36 @Override
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37 public boolean equals(Object obj) {
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38 if (this == obj) {
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39 return true;
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40 }
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41 if (obj == null) {
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42 return false;
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43 }
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44 if (getClass() != obj.getClass()) {
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45 return false;
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46 }
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47 return true;
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48 }
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49
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50 public abstract boolean isDirect();
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51
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52 public abstract static class PropertyTransition extends Transition {
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53 private final Property property;
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54
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55 public PropertyTransition(Property property) {
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56 this.property = property;
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57 }
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58
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59 @Override
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60 public int hashCode() {
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61 final int prime = 31;
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62 int result = super.hashCode();
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63 result = prime * result + ((property == null) ? 0 : property.hashCode());
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64 return result;
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65 }
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66
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67 @Override
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68 public boolean equals(Object obj) {
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69 if (!super.equals(obj)) {
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70 return false;
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71 }
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72 PropertyTransition other = (PropertyTransition) obj;
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73 if (!Objects.equals(property, other.property)) {
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74 return false;
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75 }
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76 return true;
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77 }
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78
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79 public Property getProperty() {
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80 return property;
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81 }
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82 }
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83
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84 public static final class AddPropertyTransition extends PropertyTransition {
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85 public AddPropertyTransition(Property property) {
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86 super(property);
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87 }
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88
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89 @Override
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90 public boolean isDirect() {
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91 return true;
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92 }
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93 }
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94
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95 public static final class RemovePropertyTransition extends PropertyTransition {
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96 public RemovePropertyTransition(Property property) {
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97 super(property);
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98 }
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99
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100 @Override
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101 public boolean isDirect() {
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102 return false;
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103 }
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104 }
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105
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106 public static final class ObjectTypeTransition extends Transition {
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107 private final ObjectType objectType;
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108
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109 public ObjectTypeTransition(ObjectType objectType) {
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110 this.objectType = objectType;
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111 }
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112
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113 public ObjectType getObjectType() {
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114 return objectType;
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115 }
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116
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117 @Override
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118 public boolean equals(Object other) {
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119 return super.equals(other) && Objects.equals(objectType, ((ObjectTypeTransition) other).objectType);
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120 }
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121
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122 @Override
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123 public int hashCode() {
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124 final int prime = 31;
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125 int result = super.hashCode();
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126 result = prime * result + ((objectType == null) ? 0 : objectType.hashCode());
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127 return result;
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128 }
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129
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130 @Override
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131 public boolean isDirect() {
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132 return true;
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133 }
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134 }
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135
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136 public static final class PropertyTypeTransition extends PropertyTransition {
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137 private final Property after;
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138
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139 public PropertyTypeTransition(Property before, Property after) {
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140 super(before);
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141 this.after = after;
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142 }
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143
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144 public Property getPropertyBefore() {
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145 return this.getProperty();
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146 }
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147
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148 public Property getPropertyAfter() {
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149 return after;
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150 }
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151
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152 @Override
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153 public boolean isDirect() {
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154 return false;
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155 }
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156 }
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157
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158 public static final class ReservePrimitiveArrayTransition extends Transition {
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159 public ReservePrimitiveArrayTransition() {
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160 }
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161
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162 @Override
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163 public boolean isDirect() {
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164 return true;
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165 }
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166 }
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167
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168 public String getShortName() {
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169 return this.getClass().getSimpleName().replaceFirst("Transition$", "").toLowerCase();
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170 }
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171 }