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annotate graal/com.oracle.truffle.object/src/com/oracle/truffle/object/DynamicObjectImpl.java @ 21944:16725287d5af

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Truffle: fix delete/removeProperty regression
author Andreas Woess <andreas.woess@oracle.com>
date Tue, 16 Jun 2015 19:27:51 +0200
parents c76742cc2c6f
children
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1 /*
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2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.object;
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24
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25 import java.util.*;
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26
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27 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
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28 import com.oracle.truffle.api.interop.*;
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29 import com.oracle.truffle.api.object.*;
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30 import com.oracle.truffle.object.Locations.ValueLocation;
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31 import com.oracle.truffle.object.debug.*;
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32
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33 public abstract class DynamicObjectImpl extends DynamicObject implements Cloneable {
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34 private ShapeImpl shape;
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35
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36 public static final DebugCounter reshapeCount = DebugCounter.create("Reshape count");
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37
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38 public DynamicObjectImpl(Shape shape) {
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39 assert shape instanceof ShapeImpl;
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40 initialize(shape);
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41 setShape(shape);
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42
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43 if (ObjectStorageOptions.Profile) {
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44 trackObject(this);
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45 }
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46 }
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47
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48 public Object getTypeIdentifier() {
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49 return getShape();
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50 }
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51
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52 @Override
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53 public ShapeImpl getShape() {
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54 return shape;
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55 }
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56
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57 protected void setShape(Shape shape) {
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58 assert shape.getLayout().getType().isInstance(this);
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59 this.shape = (ShapeImpl) shape;
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60 }
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61
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62 protected abstract void initialize(Shape initialShape);
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63
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64 public final void setShapeAndResize(Shape newShape) {
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65 setShapeAndResize(getShape(), newShape);
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66 }
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67
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68 @Override
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69 public final void setShapeAndResize(Shape oldShape, Shape newShape) {
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70 assert getShape() == oldShape : "wrong old shape";
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71 if (oldShape != newShape) {
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72 setShape(newShape);
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73 resizeStore(oldShape, newShape);
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74
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75 assert checkExtensionArrayInvariants(newShape);
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76 }
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77 }
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78
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79 /**
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80 * Set shape to an immediate child of the current shape, optionally growing the extension array.
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81 * Typically this would add a single property. Cannot shrink or grow more than one property at a
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82 * time.
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83 *
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84 * @see #setShapeAndResize(Shape, Shape)
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85 */
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86 @Override
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87 public final void setShapeAndGrow(Shape oldShape, Shape newShape) {
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88 assert getShape() == oldShape : "wrong old shape";
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89 if (oldShape != newShape) {
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90 assert checkSetShape(oldShape, newShape);
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91
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92 setShape(newShape);
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93 growStore(oldShape, newShape);
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94
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95 assert checkExtensionArrayInvariants(newShape);
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96 }
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97 }
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98
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99 /**
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100 * Simpler version of {@link #resizeStore} when the object is only increasing in size.
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101 */
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102 private void growStore(Shape oldShape, Shape newShape) {
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103 growObjectStore(oldShape, newShape);
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104 if (((ShapeImpl) newShape).hasPrimitiveArray) {
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105 growPrimitiveStore(oldShape, newShape);
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106 }
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107 }
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108
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109 protected abstract void growObjectStore(Shape oldShape, Shape newShape);
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110
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111 protected abstract void growPrimitiveStore(Shape oldShape, Shape newShape);
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112
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113 private void resizeStore(Shape oldShape, Shape newShape) {
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114 resizeObjectStore(oldShape, newShape);
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115 if (((ShapeImpl) newShape).hasPrimitiveArray) {
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116 resizePrimitiveStore(oldShape, newShape);
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117 }
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118 }
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119
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120 protected abstract void resizePrimitiveStore(Shape oldShape, Shape newShape);
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121
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122 protected abstract void resizeObjectStore(Shape oldShape, Shape newShape);
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123
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124 /**
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125 * Check whether fast transition is valid.
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126 *
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127 * @see #setShapeAndGrow
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128 */
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129 private boolean checkSetShape(Shape oldShape, Shape newShape) {
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130 Shape currentShape = getShape();
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131 assert oldShape != newShape : "Wrong old shape assumption?";
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132 assert newShape != currentShape : "Redundant shape change? shape=" + currentShape;
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133 // assert oldShape == currentShape || (oldShape.getLastProperty() == ((EnterpriseLayout)
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134 // oldShape.getLayout()).getPrimitiveArrayProperty() && oldShape.getParent() ==
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135 // currentShape) : "Out-of-order shape change?" + "\nparentShape=" + currentShape +
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136 // "\noldShape=" + oldShape + "\nnewShape=" + newShape;
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137 return true;
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138 }
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139
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140 /**
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141 * Check whether the extension arrays are in accordance with the description in the shape.
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142 */
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143 protected abstract boolean checkExtensionArrayInvariants(Shape newShape);
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144
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145 @Override
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146 protected final DynamicObject clone() {
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147 try {
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148 return (DynamicObject) super.clone();
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149 } catch (CloneNotSupportedException e) {
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150 throw new IllegalStateException();
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151 }
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152 }
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153
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154 protected abstract DynamicObject cloneWithShape(Shape currentShape);
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155
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156 void reshapeAfterDelete(final Shape newShape, final Shape deletedParentShape) {
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157 DynamicObject original = this.cloneWithShape(getShape());
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158 setShapeAndResize(newShape);
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159 copyProperties(original, deletedParentShape);
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160 }
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161
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162 public final void copyProperties(DynamicObject fromObject, Shape ancestor) {
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163 ShapeImpl fromShape = (ShapeImpl) fromObject.getShape();
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164 ShapeImpl toShape = getShape();
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165 assert toShape.isRelated(ancestor);
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166 assert toShape.isValid();
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167 assert ancestor.isValid();
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168 PropertyMap ancestorMap = ((ShapeImpl) ancestor).getPropertyMap();
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169 PropertyMap fromMap = fromShape.getPropertyMap();
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170 for (PropertyMap toMap = toShape.getPropertyMap(); !toMap.isEmpty() && toMap != ancestorMap; toMap = toMap.getParentMap()) {
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171 Property toProperty = toMap.getLastProperty();
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172 Property fromProperty = fromMap.get(toProperty.getKey());
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173
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174 // copy only if property has a location and it's not the same as the source location
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175 if (toProperty.getLocation() != null && !(toProperty.getLocation() instanceof ValueLocation) && !toProperty.getLocation().equals(fromProperty.getLocation())) {
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176 toProperty.setInternal(this, fromProperty.get(fromObject, false));
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177 assert toShape.isValid();
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178 }
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179
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180 if (fromProperty == fromMap.getLastProperty()) {
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181 // no property is looked up twice, so we can skip over to parent
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182 fromMap = fromMap.getParentMap();
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183 }
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184 }
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185 }
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186
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187 @Override
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188 @TruffleBoundary
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189 public boolean changeFlags(Object id, int newFlags) {
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190 Shape oldShape = getShape();
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191 Property existing = oldShape.getProperty(id);
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192 if (existing != null) {
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193 if (existing.getFlags() != newFlags) {
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194 Property newProperty = existing.copyWithFlags(newFlags);
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195 Shape newShape = oldShape.replaceProperty(existing, newProperty);
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196 this.setShape(newShape);
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197 }
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198 return true;
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199 } else {
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200 return false;
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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 @TruffleBoundary
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206 public boolean changeFlags(Object id, FlagsFunction updateFunction) {
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207 Shape oldShape = getShape();
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208 Property existing = oldShape.getProperty(id);
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209 if (existing != null) {
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210 int newFlags = updateFunction.apply(existing.getFlags());
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211 if (existing.getFlags() != newFlags) {
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212 Property newProperty = existing.copyWithFlags(newFlags);
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213 Shape newShape = oldShape.replaceProperty(existing, newProperty);
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214 this.setShape(newShape);
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215 }
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216 return true;
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217 } else {
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218 return false;
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219 }
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220 }
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221
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222 public String debugDump(int level) {
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223 return debugDump(0, level);
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224 }
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225
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226 public String debugDump(int level, int levelStop) {
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227 List<Property> properties = this.getShape().getPropertyListInternal(true);
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228 StringBuilder sb = new StringBuilder(properties.size() * 10);
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229 sb.append("{\n");
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230 for (Property property : properties) {
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231 indent(sb, level + 1);
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232
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233 sb.append(property.getKey());
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234 sb.append('[').append(property.getLocation()).append(']');
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235 Object value = property.get(this, false);
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236 if (value instanceof DynamicObjectImpl) {
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237 if (level < levelStop) {
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238 value = ((DynamicObjectImpl) value).debugDump(level + 1, levelStop);
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239 } else {
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240 value = value.toString();
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241 }
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242 }
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243 sb.append(": ");
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244 sb.append(value);
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245 if (property != properties.get(properties.size() - 1)) {
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246 sb.append(",");
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247 }
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248 sb.append("\n");
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249 }
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250 indent(sb, level);
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251 sb.append("}");
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252 return sb.toString();
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253 }
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254
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255 private static StringBuilder indent(StringBuilder sb, int level) {
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256 for (int i = 0; i < level; i++) {
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257 sb.append(' ');
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258 }
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259 return sb;
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260 }
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261
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262 @Override
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263 public String toString() {
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264 return getShape().getObjectType().toString(this);
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265 }
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266
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267 @Override
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268 public boolean equals(Object obj) {
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269 return getShape().getObjectType().equals(this, obj);
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270 }
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271
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272 @Override
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273 public int hashCode() {
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274 return getShape().getObjectType().hashCode(this);
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275 }
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276
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277 @Override
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278 @TruffleBoundary
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279 public Object get(Object id, Object defaultValue) {
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280 Property existing = getShape().getProperty(id);
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281 if (existing != null) {
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282 return existing.get(this, false);
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283 } else {
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284 return defaultValue;
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285 }
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286 }
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287
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288 @Override
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289 @TruffleBoundary
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290 public boolean set(Object id, Object value) {
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291 Property existing = getShape().getProperty(id);
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292 if (existing != null) {
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293 existing.setGeneric(this, value, null);
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294 return true;
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295 } else {
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296 return false;
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297 }
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298 }
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299
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300 @Override
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301 @TruffleBoundary
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302 public void define(Object id, Object value, int flags) {
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303 ShapeImpl oldShape = getShape();
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304 Property existing = oldShape.getProperty(id);
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305 if (existing == null) {
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306 updateShape();
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307 oldShape = getShape();
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308 Shape newShape = oldShape.addProperty(Property.create(id, oldShape.allocator().locationForValue(value, true, true), flags));
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309 updateShape();
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310 newShape.getLastProperty().setGeneric(this, value, oldShape, newShape);
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311 } else {
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312 defineExisting(id, value, flags, existing, oldShape);
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313 }
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314 }
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315
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316 private void defineExisting(Object id, Object value, int flags, Property existing, ShapeImpl oldShape) {
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317 if (existing.getFlags() == flags) {
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318 existing.setGeneric(this, value, null);
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319 } else {
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320 Property newProperty = Property.create(id, oldShape.getLayout().existingLocationForValue(value, existing.getLocation(), oldShape), flags);
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321 Shape newShape = oldShape.replaceProperty(existing, newProperty);
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322 this.setShapeAndResize(newShape);
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323 newProperty.setInternal(this, value);
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324 }
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325 }
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326
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327 @Override
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328 @TruffleBoundary
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329 public void define(Object id, Object value, int flags, LocationFactory locationFactory) {
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330 ShapeImpl oldShape = getShape();
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331 Property existing = oldShape.getProperty(id);
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332 if (existing == null) {
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333 updateShape();
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334 oldShape = getShape();
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335 Shape newShape = oldShape.addProperty(Property.create(id, locationFactory.createLocation(oldShape, value), flags));
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336 updateShape();
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337 newShape.getLastProperty().setGeneric(this, value, oldShape, newShape);
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338 } else {
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339 defineExisting(id, value, flags, existing, oldShape);
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340 }
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341 }
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342
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343 @Override
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344 @TruffleBoundary
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345 public boolean delete(Object id) {
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346 ShapeImpl oldShape = getShape();
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347 Property existing = oldShape.getProperty(id);
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348 if (existing != null) {
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349 ShapeImpl newShape = oldShape.removeProperty(existing);
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350 this.reshapeAfterDelete(newShape, ShapeImpl.findCommonAncestor(oldShape, newShape));
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351 // TODO ancestor should be the parent of found property's shape
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352 return true;
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353 } else {
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354 return false;
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355 }
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356 }
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357
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358 @Override
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359 public int size() {
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360 return getShape().getPropertyCount();
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361 }
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362
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363 @Override
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364 public boolean isEmpty() {
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365 return size() == 0;
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366 }
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367
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368 @Override
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369 public final boolean updateShape() {
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370 return getShape().getLayout().getStrategy().updateShape(this);
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371 }
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372
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373 private static void trackObject(DynamicObject obj) {
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374 ShapeProfiler.getInstance().track(obj);
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375 }
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376
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377 @Override
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378 public ForeignAccess getForeignAccess() {
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379 return getShape().getForeignAccessFactory();
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380 }
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381 }