Mercurial > hg > truffle
annotate graal/com.oracle.truffle.object/src/com/oracle/truffle/object/ShapeImpl.java @ 18627:196cf131ed32
OM: extract queryTransition method
author | Andreas Woess <andreas.woess@jku.at> |
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date | Thu, 04 Dec 2014 19:36:50 +0100 |
parents | ce46f909c176 |
children | 6db7923af642 |
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1 /* |
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2 * Copyright (c) 2012, 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.*; |
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28 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal; |
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29 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary; |
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30 import com.oracle.truffle.api.nodes.*; |
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31 import com.oracle.truffle.api.object.*; |
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32 import com.oracle.truffle.api.utilities.*; |
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33 import com.oracle.truffle.object.LocationImpl.InternalLongLocation; |
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34 import com.oracle.truffle.object.Locations.ConstantLocation; |
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35 import com.oracle.truffle.object.Locations.DeclaredDualLocation; |
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36 import com.oracle.truffle.object.Locations.DeclaredLocation; |
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37 import com.oracle.truffle.object.Locations.DualLocation; |
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38 import com.oracle.truffle.object.Locations.ValueLocation; |
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39 import com.oracle.truffle.object.Transition.AddPropertyTransition; |
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40 import com.oracle.truffle.object.Transition.ObjectTypeTransition; |
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41 import com.oracle.truffle.object.Transition.PropertyTransition; |
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42 import com.oracle.truffle.object.Transition.RemovePropertyTransition; |
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43 import com.oracle.truffle.object.Transition.ReservePrimitiveArrayTransition; |
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44 |
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45 /** |
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46 * Shape objects create a mapping of Property objects to indexes. The mapping of those indexes to an |
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47 * actual store is not part of Shape's role, but JSObject's. Shapes are immutable; adding or |
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48 * deleting a property yields a new Shape which links to the old one. This allows inline caching to |
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49 * simply check the identity of an object's Shape to determine if the cache is valid. There is one |
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50 * exception to this immutability, the transition map, but that is used simply to assure that an |
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51 * identical series of property additions and deletions will yield the same Shape object. |
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52 * |
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53 * @see DynamicObject |
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54 * @see Property |
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55 * @see Locations |
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56 */ |
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57 public abstract class ShapeImpl extends Shape { |
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58 private final int id; |
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59 |
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60 protected final LayoutImpl layout; |
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61 protected final ObjectType objectType; |
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62 protected final ShapeImpl parent; |
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63 protected final PropertyMap propertyMap; |
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64 |
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65 private final Object extraData; |
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66 private final Object sharedData; |
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67 private final ShapeImpl root; |
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68 |
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69 protected final int objectArraySize; |
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70 protected final int objectArrayCapacity; |
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71 protected final int objectFieldSize; |
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72 protected final int primitiveFieldSize; |
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73 protected final int primitiveArraySize; |
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74 protected final int primitiveArrayCapacity; |
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75 protected final boolean hasPrimitiveArray; |
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76 |
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77 protected final int depth; |
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78 protected final int propertyCount; |
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79 protected Property[] propertyArray; |
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80 |
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81 protected final Assumption validAssumption; |
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82 @CompilationFinal protected volatile Assumption leafAssumption; |
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83 |
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84 /** |
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85 * Shape transition map; lazily initialized. |
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86 * |
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87 * @see #getTransitionMapForRead() |
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88 * @see #getTransitionMapForWrite() |
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89 */ |
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90 private HashMap<Transition, ShapeImpl> transitionMap; |
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91 |
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92 private final Transition transitionFromParent; |
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93 |
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94 /** |
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95 * Private constructor. |
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96 * |
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97 * @param parent predecessor shape |
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98 * @param transitionFromParent direct transition from parent shape |
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99 * @see #ShapeImpl(Layout, ShapeImpl, ObjectType, Object, PropertyMap, Transition, |
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100 * BaseAllocator, int) |
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101 */ |
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102 private ShapeImpl(Layout layout, ShapeImpl parent, ObjectType objectType, Object sharedData, PropertyMap propertyMap, Transition transitionFromParent, int objectArraySize, int objectFieldSize, |
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103 int primitiveFieldSize, int primitiveArraySize, boolean hasPrimitiveArray, int id) { |
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104 this.layout = (LayoutImpl) layout; |
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105 this.objectType = Objects.requireNonNull(objectType); |
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106 this.propertyMap = Objects.requireNonNull(propertyMap); |
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107 this.root = parent != null ? parent.getRoot() : this; |
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108 this.parent = parent; |
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109 this.transitionFromParent = transitionFromParent; |
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110 this.objectArraySize = objectArraySize; |
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111 this.objectArrayCapacity = capacityFromSize(objectArraySize); |
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112 this.objectFieldSize = objectFieldSize; |
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113 this.primitiveFieldSize = primitiveFieldSize; |
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114 this.primitiveArraySize = primitiveArraySize; |
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115 this.primitiveArrayCapacity = capacityFromSize(primitiveArraySize); |
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116 this.hasPrimitiveArray = hasPrimitiveArray; |
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117 |
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118 if (parent != null) { |
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119 this.propertyCount = makePropertyCount(parent, propertyMap); |
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120 this.propertyArray = makePropertiesList(parent, propertyMap); |
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121 this.depth = parent.depth + 1; |
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122 } else { |
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123 this.propertyCount = 0; |
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124 this.propertyArray = null; |
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125 this.depth = 0; |
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126 } |
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127 |
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128 this.validAssumption = createValidAssumption(); |
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129 |
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130 this.id = id; |
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131 shapeCount.inc(); |
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132 |
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133 this.sharedData = sharedData; |
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134 this.extraData = objectType.createShapeData(this); |
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135 |
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136 debugRegisterShape(this); |
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137 } |
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138 |
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139 protected ShapeImpl(Layout layout, ShapeImpl parent, ObjectType operations, Object sharedData, PropertyMap propertyMap, Transition transition, Allocator allocator, int id) { |
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140 this(layout, parent, operations, sharedData, propertyMap, transition, ((BaseAllocator) allocator).objectArraySize, ((BaseAllocator) allocator).objectFieldSize, |
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141 ((BaseAllocator) allocator).primitiveFieldSize, ((BaseAllocator) allocator).primitiveArraySize, ((BaseAllocator) allocator).hasPrimitiveArray, id); |
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142 } |
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143 |
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144 @SuppressWarnings("hiding") |
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145 protected abstract ShapeImpl createShape(Layout layout, Object sharedData, ShapeImpl parent, ObjectType operations, PropertyMap propertyMap, Transition transition, Allocator allocator, int id); |
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146 |
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147 protected ShapeImpl(Layout layout, ObjectType operations, Object sharedData, int id) { |
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148 this(layout, null, operations, sharedData, PropertyMap.empty(), null, layout.createAllocator(), id); |
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149 } |
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150 |
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151 private static int makePropertyCount(ShapeImpl parent, PropertyMap propertyMap) { |
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152 return parent.propertyCount + ((propertyMap.size() > parent.propertyMap.size() && !propertyMap.getLastProperty().isHidden() && !propertyMap.getLastProperty().isShadow()) ? 1 : 0); |
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153 } |
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154 |
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155 private static Property[] makePropertiesList(ShapeImpl parent, PropertyMap propertyMap) { |
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156 Property[] properties = parent.propertyArray; |
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157 if (properties != null && propertyMap.size() != parent.propertyMap.size()) { |
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158 Property lastProperty = propertyMap.getLastProperty(); |
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159 if (lastProperty != null && !lastProperty.isHidden()) { |
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160 propertyListAllocCount.inc(); |
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161 if (!lastProperty.isShadow()) { |
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162 properties = Arrays.copyOf(properties, properties.length + 1); |
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163 properties[properties.length - 1] = lastProperty; |
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164 } else { |
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165 properties = Arrays.copyOf(properties, properties.length); |
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166 for (int i = 0; i < properties.length; i++) { |
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167 if (properties[i].isSame(lastProperty)) { |
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168 properties[i] = lastProperty; |
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169 } |
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170 } |
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171 } |
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172 } else { |
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173 propertyListShareCount.inc(); |
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174 } |
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175 } |
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176 return properties; |
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177 } |
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178 |
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179 @Override |
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180 public final Property getLastProperty() { |
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181 return propertyMap.getLastProperty(); |
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182 } |
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183 |
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184 @Override |
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185 public final int getId() { |
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186 return this.id; |
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187 } |
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188 |
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189 /** |
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190 * Calculate array size for the given number of elements. |
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191 */ |
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192 private static int capacityFromSize(int size) { |
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193 if (size == 0) { |
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194 return 0; |
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195 } else if (size < 4) { |
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196 return 4; |
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197 } else if (size < 32) { |
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198 return ((size + 7) / 8) * 8; |
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199 } else { |
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200 return ((size + 15) / 16) * 16; |
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201 } |
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202 } |
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203 |
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204 @Override |
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205 public final int getObjectArraySize() { |
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206 return objectArraySize; |
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207 } |
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208 |
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209 @Override |
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210 public final int getObjectFieldSize() { |
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211 return objectFieldSize; |
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212 } |
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213 |
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214 @Override |
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215 public final int getPrimitiveFieldSize() { |
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216 return primitiveFieldSize; |
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217 } |
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218 |
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219 @Override |
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220 public final int getObjectArrayCapacity() { |
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221 return objectArrayCapacity; |
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222 } |
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223 |
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224 @Override |
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225 public final int getPrimitiveArrayCapacity() { |
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226 return primitiveArrayCapacity; |
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227 } |
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228 |
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229 @Override |
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230 public final int getPrimitiveArraySize() { |
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231 return primitiveArraySize; |
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232 } |
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233 |
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234 @Override |
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235 public final boolean hasPrimitiveArray() { |
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236 return hasPrimitiveArray; |
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237 } |
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238 |
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239 /** |
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240 * Get the (parent) shape that holds the given property. |
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241 */ |
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242 public final ShapeImpl getShapeFromProperty(Object propertyName) { |
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243 ShapeImpl current = this; |
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244 while (current != getRoot()) { |
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245 if (current.getTransitionFromParent() instanceof AddPropertyTransition && ((AddPropertyTransition) current.getTransitionFromParent()).getProperty().getKey().equals(propertyName)) { |
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246 return current; |
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247 } |
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248 current = current.getParent(); |
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249 } |
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250 |
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251 return null; |
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252 } |
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253 |
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254 /** |
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255 * Get the (parent) shape that holds the given property. |
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256 */ |
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257 public final ShapeImpl getShapeFromProperty(Property prop) { |
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258 ShapeImpl current = this; |
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259 while (current != getRoot()) { |
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260 if (current.getTransitionFromParent() instanceof AddPropertyTransition && ((AddPropertyTransition) current.getTransitionFromParent()).getProperty().equals(prop)) { |
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261 return current; |
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262 } |
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263 current = current.parent; |
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264 } |
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265 |
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266 return null; |
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267 } |
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268 |
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269 /** |
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270 * Get a property entry by string name. |
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271 * |
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272 * @param key the name to look up |
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273 * @return a Property object, or null if not found |
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274 */ |
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275 @Override |
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276 @TruffleBoundary |
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277 public final Property getProperty(Object key) { |
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278 // return this.propertyMap.get(propertyName); |
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279 PropertyMap current = this.propertyMap; |
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280 while (current.getLastProperty() != null) { |
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281 if (current.getLastProperty().getKey().equals(key)) { |
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282 return current.getLastProperty(); |
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283 } |
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284 current = current.getParentMap(); |
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285 } |
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286 |
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287 return null; |
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288 } |
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289 |
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290 protected final void addDirectTransition(Transition transition, ShapeImpl next) { |
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291 assert next.getParent() == this && transition.isDirect(); |
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292 addTransitionInternal(transition, next); |
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293 } |
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294 |
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295 public final void addIndirectTransition(Transition transition, ShapeImpl next) { |
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296 assert next.getParent() != this && !transition.isDirect(); |
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297 addTransitionInternal(transition, next); |
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298 } |
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299 |
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300 private void addTransitionInternal(Transition transition, ShapeImpl next) { |
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301 getTransitionMapForWrite().put(transition, next); |
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302 } |
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303 |
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304 public final Map<Transition, ShapeImpl> getTransitionMapForRead() { |
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305 return transitionMap != null ? transitionMap : Collections.<Transition, ShapeImpl> emptyMap(); |
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306 } |
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307 |
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308 private Map<Transition, ShapeImpl> getTransitionMapForWrite() { |
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309 if (transitionMap != null) { |
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310 return transitionMap; |
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311 } else { |
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312 invalidateLeafAssumption(); |
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313 return transitionMap = new HashMap<>(); |
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314 } |
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315 } |
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316 |
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317 public final PropertyMap getPropertyMap() { |
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318 return propertyMap; |
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319 } |
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320 |
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321 private ShapeImpl queryTransition(Transition transition) { |
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322 ShapeImpl cachedShape = this.getTransitionMapForRead().get(transition); |
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323 if (cachedShape != null) { // Shape already exists? |
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324 shapeCacheHitCount.inc(); |
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325 return (ShapeImpl) layout.getStrategy().returnCached(cachedShape); |
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326 } |
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327 shapeCacheMissCount.inc(); |
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328 |
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329 return null; |
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330 } |
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331 |
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332 /** |
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333 * Add a new property in the map, yielding a new or cached Shape object. |
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334 * |
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335 * @param property the property to add |
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336 * @return the new Shape |
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337 */ |
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338 @TruffleBoundary |
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339 @Override |
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340 public ShapeImpl addProperty(Property property) { |
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341 assert isValid(); |
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342 ShapeImpl nextShape = addPropertyInternal(property); |
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343 objectType.onPropertyAdded(property, this, nextShape); |
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344 return nextShape; |
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345 } |
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346 |
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347 /** |
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348 * Add a new property in the map, yielding a new or cached Shape object. |
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349 * |
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350 * In contrast to {@link ShapeImpl#addProperty(Property)}, this method does not care about |
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351 * obsolete shapes. |
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352 * |
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353 * @see #addProperty(Property) |
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354 */ |
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355 private ShapeImpl addPropertyInternal(Property prop) { |
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356 CompilerAsserts.neverPartOfCompilation(); |
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357 assert prop.isShadow() || !(this.hasProperty(prop.getKey())) : "duplicate property"; |
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358 assert !getPropertyListInternal(false).contains(prop); |
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359 // invalidatePropertyAssumption(prop.getName()); |
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360 |
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361 AddPropertyTransition addTransition = new AddPropertyTransition(prop); |
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362 ShapeImpl cachedShape = queryTransition(addTransition); |
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363 if (cachedShape != null) { |
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364 return cachedShape; |
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365 } |
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366 |
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367 ShapeImpl oldShape = (ShapeImpl) layout.getStrategy().ensureSpace(this, prop.getLocation()); |
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368 |
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369 ShapeImpl newShape = makeShapeWithAddedProperty(oldShape, addTransition); |
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370 oldShape.addDirectTransition(addTransition, newShape); |
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371 return newShape; |
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372 } |
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373 |
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374 protected ShapeImpl cloneRoot(ShapeImpl from, Object newSharedData) { |
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375 return createShape(from.layout, newSharedData, null, from.objectType, from.propertyMap, null, from.allocator(), from.id); |
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376 } |
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377 |
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378 /** |
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379 * Create a separate clone of a shape. |
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380 * |
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381 * @param newParent the cloned parent shape |
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382 */ |
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383 protected final ShapeImpl cloneOnto(ShapeImpl newParent) { |
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384 ShapeImpl from = this; |
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385 ShapeImpl newShape = createShape(newParent.layout, newParent.sharedData, newParent, from.objectType, from.propertyMap, from.transitionFromParent, from.allocator(), newParent.id); |
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386 |
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387 shapeCloneCount.inc(); |
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388 |
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389 // (aw) need to have this transition for obsolescence |
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390 newParent.addDirectTransition(from.transitionFromParent, newShape); |
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391 return newShape; |
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392 } |
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393 |
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394 public final Transition getTransitionFromParent() { |
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395 return transitionFromParent; |
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396 } |
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397 |
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398 /** |
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399 * Create a new shape that adds a property to the parent shape. |
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400 */ |
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401 private static ShapeImpl makeShapeWithAddedProperty(ShapeImpl parent, AddPropertyTransition addTransition) { |
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402 Property addend = addTransition.getProperty(); |
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403 BaseAllocator allocator = parent.allocator().addLocation(addend.getLocation()); |
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404 |
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405 PropertyMap newPropertyMap = parent.propertyMap.putCopy(addend); |
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406 |
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407 ShapeImpl newShape = parent.createShape(parent.layout, parent.sharedData, parent, parent.objectType, newPropertyMap, addTransition, allocator, parent.id); |
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408 assert ((LocationImpl) addend.getLocation()).primitiveArrayCount() == 0 || newShape.hasPrimitiveArray; |
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409 assert newShape.depth == allocator.depth; |
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410 return newShape; |
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411 } |
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412 |
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413 /** |
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414 * Create a new shape that reserves the primitive extension array field. |
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415 */ |
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416 private static ShapeImpl makeShapeWithPrimitiveExtensionArray(ShapeImpl parent, Transition transition) { |
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417 assert parent.getLayout().hasPrimitiveExtensionArray(); |
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418 assert !parent.hasPrimitiveArray(); |
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419 BaseAllocator allocator = parent.allocator().addLocation(parent.getLayout().getPrimitiveArrayLocation()); |
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420 ShapeImpl newShape = parent.createShape(parent.layout, parent.sharedData, parent, parent.objectType, parent.propertyMap, transition, allocator, parent.id); |
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421 assert newShape.hasPrimitiveArray(); |
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422 assert newShape.depth == allocator.depth; |
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423 return newShape; |
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424 } |
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425 |
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426 private ShapeImpl addPrimitiveExtensionArray() { |
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427 assert layout.hasPrimitiveExtensionArray() && !hasPrimitiveArray(); |
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428 Transition transition = new ReservePrimitiveArrayTransition(); |
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429 ShapeImpl cachedShape = queryTransition(transition); |
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430 if (cachedShape != null) { |
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431 return cachedShape; |
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432 } |
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433 |
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434 ShapeImpl oldShape = (ShapeImpl) layout.getStrategy().ensureSpace(this, layout.getPrimitiveArrayLocation()); |
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435 ShapeImpl newShape = makeShapeWithPrimitiveExtensionArray(oldShape, transition); |
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436 oldShape.addDirectTransition(transition, newShape); |
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437 return newShape; |
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438 } |
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439 |
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440 /** |
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441 * Are these two shapes related, i.e. do they have the same root? |
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442 * |
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443 * @param other Shape to compare to |
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444 * @return true if one shape is an upcast of the other, or the Shapes are equal |
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445 */ |
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446 @Override |
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447 public boolean isRelated(Shape other) { |
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448 if (this == other) { |
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449 return true; |
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450 } |
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451 if (this.getRoot() == getRoot()) { |
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452 return true; |
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453 } |
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454 return false; |
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455 } |
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456 |
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457 /** |
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458 * Get a list of all properties that this Shape stores. |
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459 * |
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460 * @return list of properties |
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461 */ |
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462 @TruffleBoundary |
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463 @Override |
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464 public final List<Property> getPropertyList(Pred<Property> filter) { |
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465 LinkedList<Property> props = new LinkedList<>(); |
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466 next: for (Property currentProperty : this.propertyMap.reverseOrderValues()) { |
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467 if (!currentProperty.isHidden() && filter.test(currentProperty)) { |
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468 if (currentProperty.getLocation() instanceof DeclaredLocation) { |
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469 for (Iterator<Property> iter = props.iterator(); iter.hasNext();) { |
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470 Property other = iter.next(); |
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471 if (other.isShadow() && other.getKey().equals(currentProperty.getKey())) { |
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472 iter.remove(); |
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473 props.addFirst(other); |
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474 continue next; |
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475 } |
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476 } |
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477 } |
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478 props.addFirst(currentProperty); |
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479 } |
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480 } |
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481 return props; |
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482 } |
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483 |
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484 @Override |
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485 public final List<Property> getPropertyList() { |
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486 return getPropertyList(ALL); |
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487 } |
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488 |
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489 /** |
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490 * Returns all (also hidden) Property objects in this shape. |
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491 * |
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492 * @param ascending desired order |
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493 */ |
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494 @TruffleBoundary |
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495 @Override |
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496 public final List<Property> getPropertyListInternal(boolean ascending) { |
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497 LinkedList<Property> props = new LinkedList<>(); |
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498 for (Property current : this.propertyMap.reverseOrderValues()) { |
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499 if (ascending) { |
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500 props.addFirst(current); |
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501 } else { |
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502 props.add(current); |
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503 } |
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504 } |
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505 return props; |
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506 } |
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507 |
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508 /** |
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509 * Get a list of all (visible) property names in insertion order. |
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510 * |
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511 * @return list of property names |
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512 */ |
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513 @TruffleBoundary |
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514 @Override |
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515 public final List<Object> getKeyList(Pred<Property> filter) { |
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516 LinkedList<Object> keys = new LinkedList<>(); |
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517 for (Property currentProperty : this.propertyMap.reverseOrderValues()) { |
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518 if (!currentProperty.isHidden() && filter.test(currentProperty) && !currentProperty.isShadow()) { |
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519 keys.addFirst(currentProperty.getKey()); |
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520 } |
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521 } |
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522 return keys; |
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523 } |
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524 |
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525 @Override |
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526 public final List<Object> getKeyList() { |
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527 return getKeyList(ALL); |
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528 } |
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529 |
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530 @Override |
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531 public Iterable<Object> getKeys() { |
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532 return getKeyList(); |
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533 } |
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534 |
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535 @Override |
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536 public final boolean isValid() { |
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537 return getValidAssumption().isValid(); |
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538 } |
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539 |
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540 @Override |
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541 public final Assumption getValidAssumption() { |
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542 return validAssumption; |
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543 } |
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544 |
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545 private static Assumption createValidAssumption() { |
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546 return Truffle.getRuntime().createAssumption("valid shape"); |
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547 } |
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548 |
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549 public final void invalidateValidAssumption() { |
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550 getValidAssumption().invalidate(); |
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551 } |
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552 |
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553 @Override |
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554 public final boolean isLeaf() { |
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555 return leafAssumption == null || leafAssumption.isValid(); |
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556 } |
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557 |
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558 @Override |
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559 public final Assumption getLeafAssumption() { |
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560 if (leafAssumption == null) { |
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561 CompilerDirectives.transferToInterpreterAndInvalidate(); |
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562 synchronized (getMutex()) { |
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563 if (leafAssumption == null) { |
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564 leafAssumption = isLeafHelper() ? createLeafAssumption() : NeverValidAssumption.INSTANCE; |
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565 } |
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566 } |
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567 } |
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568 return leafAssumption; |
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569 } |
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570 |
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571 private boolean isLeafHelper() { |
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572 return getTransitionMapForRead().isEmpty(); |
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573 } |
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574 |
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575 private static Assumption createLeafAssumption() { |
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576 return Truffle.getRuntime().createAssumption("leaf shape"); |
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577 } |
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578 |
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579 private void invalidateLeafAssumption() { |
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580 Assumption assumption = leafAssumption; |
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581 if (assumption != null) { |
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582 assumption.invalidate(); |
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583 } else { |
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584 leafAssumption = NeverValidAssumption.INSTANCE; |
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585 } |
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586 } |
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587 |
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588 @Override |
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589 public String toString() { |
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590 return toStringLimit(Integer.MAX_VALUE); |
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591 } |
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592 |
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593 @TruffleBoundary |
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594 public String toStringLimit(int limit) { |
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595 StringBuilder sb = new StringBuilder(); |
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596 sb.append('@'); |
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597 sb.append(Integer.toHexString(hashCode())); |
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598 if (!isValid()) { |
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599 sb.append('!'); |
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600 } |
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601 |
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602 sb.append("{"); |
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603 for (Iterator<Property> iterator = propertyMap.reverseOrderValues().iterator(); iterator.hasNext();) { |
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604 Property p = iterator.next(); |
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605 sb.append(p); |
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606 if (iterator.hasNext()) { |
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607 sb.append(", "); |
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608 } |
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609 if (sb.length() >= limit) { |
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610 sb.append("..."); |
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611 break; |
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612 } |
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613 sb.append("\n"); |
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614 } |
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615 sb.append("}"); |
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616 |
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617 return sb.toString(); |
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618 } |
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619 |
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620 @Override |
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621 public final ShapeImpl getParent() { |
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622 return parent; |
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623 } |
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624 |
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625 public final int getDepth() { |
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626 return depth; |
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627 } |
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628 |
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629 @Override |
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630 public final boolean hasProperty(Object name) { |
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631 return getProperty(name) != null; |
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632 } |
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633 |
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634 @TruffleBoundary |
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635 @Override |
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636 public final ShapeImpl removeProperty(Property prop) { |
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637 RemovePropertyTransition transition = new RemovePropertyTransition(prop); |
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638 ShapeImpl cachedShape = queryTransition(transition); |
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639 if (cachedShape != null) { |
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640 return cachedShape; |
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641 } |
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642 |
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643 ShapeImpl shape = getShapeFromProperty(prop); |
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644 if (shape != null) { |
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645 List<Transition> transitionList = new ArrayList<>(); |
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646 ShapeImpl current = this; |
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647 while (current != shape) { |
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648 transitionList.add(current.getTransitionFromParent()); |
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649 current = current.parent; |
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650 } |
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651 ShapeImpl newShape = shape.parent; |
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652 for (ListIterator<Transition> iterator = transitionList.listIterator(transitionList.size()); iterator.hasPrevious();) { |
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653 Transition previous = iterator.previous(); |
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654 newShape = newShape.applyTransition(previous, true); |
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655 } |
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656 |
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657 getTransitionMapForWrite().put(transition, newShape); |
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658 return newShape; |
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659 } else { |
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660 return null; |
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661 } |
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662 } |
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663 |
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664 @TruffleBoundary |
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665 @Override |
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666 public final ShapeImpl append(Property oldProperty) { |
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667 return addProperty(oldProperty.relocate(allocator().moveLocation(oldProperty.getLocation()))); |
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668 } |
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669 |
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670 public final ShapeImpl applyTransition(Transition transition, boolean append) { |
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671 if (transition instanceof AddPropertyTransition) { |
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672 return append ? append(((AddPropertyTransition) transition).getProperty()) : addProperty(((AddPropertyTransition) transition).getProperty()); |
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673 } else if (transition instanceof ObjectTypeTransition) { |
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674 return changeType(((ObjectTypeTransition) transition).getObjectType()); |
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675 } else if (transition instanceof ReservePrimitiveArrayTransition) { |
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676 return reservePrimitiveExtensionArray(); |
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677 } else { |
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678 throw new UnsupportedOperationException(); |
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679 } |
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680 } |
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681 |
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682 @Override |
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683 public final BaseAllocator allocator() { |
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684 return layout.getStrategy().createAllocator(this); |
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685 } |
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686 |
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687 /** |
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688 * Duplicate shape exchanging existing property with new property. |
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689 */ |
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690 @Override |
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691 public final ShapeImpl replaceProperty(Property oldProperty, Property newProperty) { |
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692 Transition replacePropertyTransition = new Transition.ReplacePropertyTransition(oldProperty, newProperty); |
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693 ShapeImpl cachedShape = queryTransition(replacePropertyTransition); |
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694 if (cachedShape != null) { |
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695 return cachedShape; |
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696 } |
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697 |
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698 ShapeImpl top = this; |
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699 List<Transition> transitionList = new ArrayList<>(); |
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700 boolean found = false; |
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701 while (top != getRoot() && !found) { |
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702 Transition transition = top.getTransitionFromParent(); |
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703 transitionList.add(transition); |
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704 if (transition instanceof AddPropertyTransition && ((AddPropertyTransition) transition).getProperty().getKey().equals(newProperty.getKey())) { |
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705 found = true; |
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706 } |
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707 top = top.parent; |
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708 } |
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709 ShapeImpl newShape = top; |
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710 for (ListIterator<Transition> iterator = transitionList.listIterator(transitionList.size()); iterator.hasPrevious();) { |
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711 Transition transition = iterator.previous(); |
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712 if (transition instanceof AddPropertyTransition && ((AddPropertyTransition) transition).getProperty().getKey().equals(newProperty.getKey())) { |
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713 newShape = newShape.addProperty(newProperty); |
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714 } else { |
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715 newShape = newShape.applyTransition(transition, false); |
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716 } |
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717 } |
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718 addIndirectTransition(replacePropertyTransition, newShape); |
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719 return newShape; |
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720 } |
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721 |
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722 /** |
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723 * Find lowest common ancestor of two related shapes. |
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724 */ |
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725 public static ShapeImpl findCommonAncestor(ShapeImpl left, ShapeImpl right) { |
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726 if (!left.isRelated(right)) { |
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727 throw new IllegalArgumentException("shapes must have the same root"); |
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728 } else if (left == right) { |
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729 return left; |
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730 } |
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731 int leftLength = left.depth; |
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732 int rightLength = right.depth; |
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733 ShapeImpl leftPtr = left; |
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734 ShapeImpl rightPtr = right; |
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735 while (leftLength > rightLength) { |
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736 leftPtr = leftPtr.parent; |
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737 leftLength--; |
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738 } |
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739 while (rightLength > leftLength) { |
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740 rightPtr = rightPtr.parent; |
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741 rightLength--; |
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742 } |
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743 while (leftPtr != rightPtr) { |
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744 leftPtr = leftPtr.parent; |
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745 rightPtr = rightPtr.parent; |
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746 } |
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747 return leftPtr; |
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748 } |
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749 |
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750 /** |
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751 * For copying over properties after exchanging the prototype of an object. |
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752 */ |
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753 @TruffleBoundary |
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754 @Override |
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755 public final ShapeImpl copyOverPropertiesInternal(Shape destination) { |
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756 assert ((ShapeImpl) destination).getDepth() == 0; |
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757 List<Property> properties = this.getPropertyListInternal(true); |
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758 ShapeImpl newShape = ((ShapeImpl) destination).addPropertiesInternal(properties); |
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759 return newShape; |
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760 } |
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761 |
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762 private ShapeImpl addPropertiesInternal(List<Property> properties) { |
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763 ShapeImpl newShape = this; |
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764 for (Property p : properties) { |
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765 newShape = newShape.addPropertyInternal(p); |
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766 } |
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767 return newShape; |
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768 } |
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769 |
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770 @Override |
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771 public final int getPropertyCount() { |
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772 return propertyCount; |
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773 } |
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774 |
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775 /** |
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776 * Find difference between two shapes. |
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777 * |
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778 * @see ObjectStorageOptions#TraceReshape |
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779 */ |
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780 public static List<Property> diff(Shape oldShape, Shape newShape) { |
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781 List<Property> oldList = oldShape.getPropertyListInternal(false); |
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782 List<Property> newList = newShape.getPropertyListInternal(false); |
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783 |
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784 List<Property> diff = new ArrayList<>(oldList); |
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785 diff.addAll(newList); |
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786 List<Property> intersection = new ArrayList<>(oldList); |
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787 intersection.retainAll(newList); |
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788 diff.removeAll(intersection); |
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789 return diff; |
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790 } |
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791 |
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792 @Override |
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793 public ObjectType getObjectType() { |
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794 return objectType; |
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795 } |
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|
796 |
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797 @Override |
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798 public ShapeImpl getRoot() { |
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799 return root; |
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800 } |
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801 |
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802 @Override |
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803 public final boolean check(DynamicObject subject) { |
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804 return subject.getShape() == this; |
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805 } |
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|
806 |
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807 @Override |
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808 public final LayoutImpl getLayout() { |
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809 return layout; |
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810 } |
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|
811 |
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812 @Override |
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813 public final Object getData() { |
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814 return extraData; |
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815 } |
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816 |
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817 @Override |
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818 public final Object getSharedData() { |
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819 return sharedData; |
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820 } |
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821 |
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822 @TruffleBoundary |
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823 @Override |
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824 public final boolean hasTransitionWithKey(Object key) { |
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825 for (Transition transition : getTransitionMapForRead().keySet()) { |
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826 if (transition instanceof PropertyTransition) { |
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827 if (((PropertyTransition) transition).getProperty().getKey().equals(key)) { |
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828 return true; |
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829 } |
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830 } |
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831 } |
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832 return false; |
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833 } |
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834 |
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835 /** |
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836 * Clone off a separate shape with new shared data. |
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837 */ |
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838 @TruffleBoundary |
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839 @Override |
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840 public final ShapeImpl createSeparateShape(Object newSharedData) { |
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841 if (parent == null) { |
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842 return cloneRoot(this, newSharedData); |
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843 } else { |
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844 return this.cloneOnto(parent.createSeparateShape(newSharedData)); |
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845 } |
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846 } |
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847 |
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848 @Override |
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849 @TruffleBoundary |
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850 public final ShapeImpl changeType(ObjectType newOps) { |
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851 ObjectTypeTransition transition = new ObjectTypeTransition(newOps); |
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852 ShapeImpl cachedShape = queryTransition(transition); |
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853 if (cachedShape != null) { |
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854 return cachedShape; |
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855 } |
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856 |
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857 ShapeImpl newShape = createShape(layout, sharedData, this, newOps, propertyMap, transition, allocator(), id); |
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858 addDirectTransition(transition, newShape); |
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859 return newShape; |
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860 } |
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861 |
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862 @Override |
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863 public final ShapeImpl reservePrimitiveExtensionArray() { |
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864 if (layout.hasPrimitiveExtensionArray() && !hasPrimitiveArray()) { |
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865 return addPrimitiveExtensionArray(); |
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866 } |
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867 return this; |
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868 } |
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869 |
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870 @Override |
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871 public final Iterable<Property> getProperties() { |
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872 if (getPropertyCount() != 0 && propertyArray == null) { |
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873 CompilerDirectives.transferToInterpreter(); |
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874 propertyArray = createPropertiesArray(); |
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875 } |
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876 return new Iterable<Property>() { |
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877 public Iterator<Property> iterator() { |
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878 return new Iterator<Property>() { |
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879 private int cursor; |
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880 |
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881 public boolean hasNext() { |
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882 return cursor < getPropertyCount(); |
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883 } |
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884 |
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885 public Property next() { |
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886 if (hasNext()) { |
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887 return propertyArray[cursor++]; |
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888 } |
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889 throw new NoSuchElementException(); |
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890 } |
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891 |
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892 public void remove() { |
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893 throw new UnsupportedOperationException(); |
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894 } |
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895 }; |
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896 } |
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897 }; |
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898 } |
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899 |
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900 private Property[] createPropertiesArray() { |
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901 propertyListAllocCount.inc(); |
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902 Property[] propertiesArray = new Property[getPropertyCount()]; |
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903 List<Property> ownProperties = getPropertyList(ALL); |
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904 assert ownProperties.size() == getPropertyCount(); |
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905 for (int i = 0; i < getPropertyCount(); i++) { |
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906 propertiesArray[i] = ownProperties.get(i); |
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907 } |
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908 return propertiesArray; |
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909 } |
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|
910 |
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|
911 @Override |
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912 public final DynamicObject newInstance() { |
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913 return layout.newInstance(this); |
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914 } |
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|
915 |
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916 @Override |
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917 public final DynamicObjectFactory createFactory() { |
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918 final List<Property> properties = getPropertyListInternal(true); |
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919 for (Iterator<Property> iterator = properties.iterator(); iterator.hasNext();) { |
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920 Property property = iterator.next(); |
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921 // skip non-instance fields |
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Truffle: initial commit of object API implementation
Andreas Woess <andreas.woess@jku.at>
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|
922 assert property.getLocation() != layout.getPrimitiveArrayLocation(); |
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Truffle: initial commit of object API implementation
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923 if (property.getLocation() instanceof ValueLocation) { |
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924 iterator.remove(); |
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925 } |
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926 } |
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|
927 |
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Truffle: initial commit of object API implementation
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|
928 return new DynamicObjectFactory() { |
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Truffle: initial commit of object API implementation
Andreas Woess <andreas.woess@jku.at>
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|
929 @CompilationFinal private final PropertyImpl[] instanceFields = properties.toArray(new PropertyImpl[properties.size()]); |
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Truffle: initial commit of object API implementation
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930 |
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931 @ExplodeLoop |
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|
932 public DynamicObject newInstance(Object... initialValues) { |
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Truffle: initial commit of object API implementation
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|
933 DynamicObject store = ShapeImpl.this.newInstance(); |
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|
934 for (int i = 0; i < instanceFields.length; i++) { |
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935 instanceFields[i].setInternal(store, initialValues[i]); |
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936 } |
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937 return store; |
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938 } |
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|
939 |
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Truffle: initial commit of object API implementation
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940 public Shape getShape() { |
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941 return ShapeImpl.this; |
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942 } |
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943 }; |
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944 } |
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945 |
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946 @Override |
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947 public Object getMutex() { |
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diff
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948 return getRoot(); |
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949 } |
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|
950 |
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951 @Override |
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952 public Shape tryMerge(Shape other) { |
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953 return null; |
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954 } |
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955 |
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956 public abstract static class BaseAllocator extends Allocator { |
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957 protected final LayoutImpl layout; |
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958 protected int objectArraySize; |
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959 protected int objectFieldSize; |
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960 protected int primitiveFieldSize; |
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961 protected int primitiveArraySize; |
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962 protected boolean hasPrimitiveArray; |
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963 protected int depth; |
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964 |
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965 protected BaseAllocator(LayoutImpl layout) { |
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966 this.layout = layout; |
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967 } |
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968 |
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969 protected BaseAllocator(ShapeImpl shape) { |
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970 this(shape.getLayout()); |
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971 this.objectArraySize = shape.objectArraySize; |
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972 this.objectFieldSize = shape.objectFieldSize; |
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973 this.primitiveFieldSize = shape.primitiveFieldSize; |
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974 this.primitiveArraySize = shape.primitiveArraySize; |
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975 this.hasPrimitiveArray = shape.hasPrimitiveArray; |
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976 this.depth = shape.depth; |
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977 } |
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978 |
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979 protected abstract Location moveLocation(Location oldLocation); |
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980 |
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981 protected abstract Location newObjectLocation(boolean useFinal, boolean nonNull); |
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982 |
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983 protected abstract Location newTypedObjectLocation(boolean useFinal, Class<?> type, boolean nonNull); |
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984 |
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985 protected abstract Location newIntLocation(boolean useFinal); |
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986 |
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987 protected abstract Location newDoubleLocation(boolean useFinal); |
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988 |
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989 protected abstract Location newLongLocation(boolean useFinal); |
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990 |
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991 protected abstract Location newBooleanLocation(boolean useFinal); |
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992 |
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993 @Override |
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994 public final Location constantLocation(Object value) { |
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995 return new ConstantLocation(value); |
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996 } |
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997 |
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998 @Override |
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999 protected Location locationForValue(Object value, boolean useFinal, boolean nonNull) { |
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1000 if (value instanceof Integer) { |
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1001 return newIntLocation(useFinal); |
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1002 } else if (value instanceof Double) { |
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1003 return newDoubleLocation(useFinal); |
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1004 } else if (value instanceof Long) { |
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1005 return newLongLocation(useFinal); |
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1006 } else if (value instanceof Boolean) { |
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1007 return newBooleanLocation(useFinal); |
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1008 } else if (ObjectStorageOptions.TypedObjectLocations && value != null) { |
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1009 return newTypedObjectLocation(useFinal, value.getClass(), nonNull); |
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1010 } |
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1011 return newObjectLocation(useFinal, nonNull && value != null); |
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1012 } |
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1013 |
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1014 protected abstract Location locationForValueUpcast(Object value, Location oldLocation); |
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1015 |
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1016 @Override |
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1017 protected Location locationForType(Class<?> type, boolean useFinal, boolean nonNull) { |
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1018 if (type == int.class) { |
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1019 return newIntLocation(useFinal); |
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1020 } else if (type == double.class) { |
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1021 return newDoubleLocation(useFinal); |
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1022 } else if (type == long.class) { |
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1023 return newLongLocation(useFinal); |
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1024 } else if (type == boolean.class) { |
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1025 return newBooleanLocation(useFinal); |
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1026 } else if (ObjectStorageOptions.TypedObjectLocations && type != null && type != Object.class) { |
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1027 assert !type.isPrimitive() : "unsupported primitive type"; |
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1028 return newTypedObjectLocation(useFinal, type, nonNull); |
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1029 } |
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1030 return newObjectLocation(useFinal, nonNull); |
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1031 } |
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1032 |
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1033 protected Location newDualLocation(Class<?> type) { |
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1034 return new DualLocation((InternalLongLocation) newLongLocation(false), (ObjectLocation) newObjectLocation(false, false), layout, type); |
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1035 } |
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1036 |
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1037 protected DualLocation newDualLocationForValue(Object value) { |
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1038 Class<?> initialType = null; |
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1039 if (value instanceof Integer) { |
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1040 initialType = int.class; |
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1041 } else if (value instanceof Double) { |
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1042 initialType = double.class; |
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1043 } else if (value instanceof Boolean) { |
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1044 initialType = boolean.class; |
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1045 } else { |
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1046 initialType = Object.class; |
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1047 } |
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1048 return new DualLocation((InternalLongLocation) newLongLocation(false), (ObjectLocation) newObjectLocation(false, false), layout, initialType); |
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1049 } |
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1050 |
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1051 protected Location newDeclaredDualLocation(Object value) { |
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1052 return new DeclaredDualLocation((InternalLongLocation) newLongLocation(false), (ObjectLocation) newObjectLocation(false, false), value, layout); |
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1053 } |
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1054 |
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1055 protected <T extends Location> T advance(T location0) { |
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1056 if (location0 instanceof LocationImpl) { |
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1057 LocationImpl location = (LocationImpl) location0; |
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1058 objectArraySize += location.objectArrayCount(); |
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1059 primitiveArraySize += location.primitiveArrayCount(); |
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1060 primitiveFieldSize += location.primitiveFieldCount(); |
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1061 if (layout.hasPrimitiveExtensionArray()) { |
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1062 hasPrimitiveArray |= location == layout.getPrimitiveArrayLocation() || location.primitiveArrayCount() != 0; |
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1063 objectFieldSize = location == layout.getPrimitiveArrayLocation() ? objectFieldSize : Math.max(objectFieldSize, layout.objectFieldIndex(location) + location.objectFieldCount()); |
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1064 } else { |
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1065 assert !hasPrimitiveArray && location.primitiveArrayCount() == 0; |
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1066 objectFieldSize += location.objectFieldCount(); |
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1067 } |
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1068 } |
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1069 depth++; |
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1070 return location0; |
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1071 } |
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1072 |
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1073 @Override |
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1074 public BaseAllocator addLocation(Location location) { |
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1075 advance(location); |
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1076 return this; |
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1077 } |
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1078 } |
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1079 |
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1080 private static void debugRegisterShape(ShapeImpl newShape) { |
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1081 if (ObjectStorageOptions.DumpShapes) { |
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1082 Debug.registerShape(newShape); |
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1083 } |
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1084 } |
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1085 |
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1086 /** |
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1087 * Match all filter. |
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1088 */ |
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1089 public static final Pred<Property> ALL = new Pred<Property>() { |
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1090 public boolean test(Property t) { |
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1091 return true; |
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1092 } |
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1093 }; |
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1094 |
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1095 private static final DebugCounter shapeCount = DebugCounter.create("Shapes allocated total"); |
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1096 private static final DebugCounter shapeCloneCount = DebugCounter.create("Shapes allocated cloned"); |
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1097 private static final DebugCounter shapeCacheHitCount = DebugCounter.create("Shape cache hits"); |
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1098 private static final DebugCounter shapeCacheMissCount = DebugCounter.create("Shape cache misses"); |
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1099 |
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1100 protected static final DebugCounter propertyListAllocCount = DebugCounter.create("Property lists allocated"); |
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1101 protected static final DebugCounter propertyListShareCount = DebugCounter.create("Property lists shared"); |
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1102 } |