Mercurial > hg > truffle
annotate truffle/com.oracle.truffle.object/src/com/oracle/truffle/object/DynamicObjectImpl.java @ 22145:72a6b0e49d31
remove DynamicObject#changeFlags convenience method
author | Andreas Woess <andreas.woess@oracle.com> |
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date | Sat, 12 Sep 2015 22:47:16 +0200 |
parents | 55a3e72fe241 |
children | dc83cc1f94f2 |
rev | line source |
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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 @TruffleBoundary |
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188 public boolean changeFlags(Object id, int newFlags) { |
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189 Shape oldShape = getShape(); |
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190 Property existing = oldShape.getProperty(id); |
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191 if (existing != null) { |
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192 if (existing.getFlags() != newFlags) { |
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193 Property newProperty = existing.copyWithFlags(newFlags); |
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194 Shape newShape = oldShape.replaceProperty(existing, newProperty); |
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195 this.setShape(newShape); |
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196 } |
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197 return true; |
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198 } else { |
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199 return false; |
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200 } |
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201 } |
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202 |
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203 public String debugDump(int level) { |
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204 return debugDump(0, level); |
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205 } |
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206 |
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207 public String debugDump(int level, int levelStop) { |
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208 List<Property> properties = this.getShape().getPropertyListInternal(true); |
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209 StringBuilder sb = new StringBuilder(properties.size() * 10); |
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210 sb.append("{\n"); |
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211 for (Property property : properties) { |
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212 indent(sb, level + 1); |
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213 |
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214 sb.append(property.getKey()); |
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215 sb.append('[').append(property.getLocation()).append(']'); |
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216 Object value = property.get(this, false); |
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217 if (value instanceof DynamicObjectImpl) { |
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218 if (level < levelStop) { |
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219 value = ((DynamicObjectImpl) value).debugDump(level + 1, levelStop); |
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220 } else { |
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221 value = value.toString(); |
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222 } |
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223 } |
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224 sb.append(": "); |
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225 sb.append(value); |
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226 if (property != properties.get(properties.size() - 1)) { |
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227 sb.append(","); |
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228 } |
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229 sb.append("\n"); |
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230 } |
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231 indent(sb, level); |
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232 sb.append("}"); |
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233 return sb.toString(); |
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234 } |
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235 |
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236 private static StringBuilder indent(StringBuilder sb, int level) { |
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237 for (int i = 0; i < level; i++) { |
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238 sb.append(' '); |
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239 } |
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240 return sb; |
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241 } |
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242 |
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243 @Override |
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244 public String toString() { |
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245 return getShape().getObjectType().toString(this); |
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246 } |
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247 |
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248 @Override |
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249 public boolean equals(Object obj) { |
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250 return getShape().getObjectType().equals(this, obj); |
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251 } |
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252 |
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253 @Override |
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254 public int hashCode() { |
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255 return getShape().getObjectType().hashCode(this); |
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256 } |
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257 |
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258 @Override |
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259 @TruffleBoundary |
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260 public Object get(Object id, Object defaultValue) { |
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261 Property existing = getShape().getProperty(id); |
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262 if (existing != null) { |
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263 return existing.get(this, false); |
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264 } else { |
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265 return defaultValue; |
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266 } |
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267 } |
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268 |
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269 @Override |
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270 @TruffleBoundary |
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271 public boolean set(Object id, Object value) { |
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272 Property existing = getShape().getProperty(id); |
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273 if (existing != null) { |
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274 existing.setGeneric(this, value, null); |
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275 return true; |
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276 } else { |
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277 return false; |
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278 } |
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279 } |
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280 |
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281 @Override |
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282 @TruffleBoundary |
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283 public void define(Object id, Object value, int flags) { |
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284 ShapeImpl oldShape = getShape(); |
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285 Property existing = oldShape.getProperty(id); |
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286 if (existing == null) { |
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287 updateShape(); |
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288 oldShape = getShape(); |
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289 Shape newShape = oldShape.addProperty(Property.create(id, oldShape.allocator().locationForValue(value, true, true), flags)); |
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290 updateShape(); |
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291 newShape.getLastProperty().setGeneric(this, value, oldShape, newShape); |
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292 } else { |
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293 defineExisting(id, value, flags, existing, oldShape); |
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294 } |
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295 } |
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296 |
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297 private void defineExisting(Object id, Object value, int flags, Property existing, ShapeImpl oldShape) { |
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298 if (existing.getFlags() == flags) { |
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299 existing.setGeneric(this, value, null); |
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300 } else { |
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301 Property newProperty = Property.create(id, oldShape.getLayout().existingLocationForValue(value, existing.getLocation(), oldShape), flags); |
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302 Shape newShape = oldShape.replaceProperty(existing, newProperty); |
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303 this.setShapeAndResize(newShape); |
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304 newProperty.setInternal(this, value); |
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305 } |
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306 } |
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307 |
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308 @Override |
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309 @TruffleBoundary |
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310 public void define(Object id, Object value, int flags, LocationFactory locationFactory) { |
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311 ShapeImpl oldShape = getShape(); |
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312 Property existing = oldShape.getProperty(id); |
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313 if (existing == null) { |
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314 updateShape(); |
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315 oldShape = getShape(); |
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316 Shape newShape = oldShape.addProperty(Property.create(id, locationFactory.createLocation(oldShape, value), flags)); |
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317 updateShape(); |
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318 newShape.getLastProperty().setGeneric(this, value, oldShape, newShape); |
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319 } else { |
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320 defineExisting(id, value, flags, existing, oldShape); |
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321 } |
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322 } |
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323 |
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324 @Override |
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325 @TruffleBoundary |
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326 public boolean delete(Object id) { |
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327 ShapeImpl oldShape = getShape(); |
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328 Property existing = oldShape.getProperty(id); |
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329 if (existing != null) { |
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330 ShapeImpl newShape = oldShape.removeProperty(existing); |
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331 this.reshapeAfterDelete(newShape, ShapeImpl.findCommonAncestor(oldShape, newShape)); |
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332 // TODO ancestor should be the parent of found property's shape |
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333 return true; |
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334 } else { |
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335 return false; |
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336 } |
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337 } |
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338 |
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339 @Override |
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340 public int size() { |
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341 return getShape().getPropertyCount(); |
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342 } |
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343 |
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344 @Override |
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345 public boolean isEmpty() { |
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346 return size() == 0; |
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347 } |
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348 |
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349 @Override |
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350 public final boolean updateShape() { |
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351 return getShape().getLayout().getStrategy().updateShape(this); |
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352 } |
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353 |
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354 private static void trackObject(DynamicObject obj) { |
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355 ShapeProfiler.getInstance().track(obj); |
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356 } |
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357 |
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358 @Override |
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359 public final DynamicObject copy(Shape currentShape) { |
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360 return cloneWithShape(currentShape); |
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361 } |
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362 |
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363 @Override |
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364 public ForeignAccess getForeignAccess() { |
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OM: DynamicObject extends TruffleObject, add default implementation
Matthias Grimmer <grimmer@ssw.jku.at>
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365 return getShape().getForeignAccessFactory(); |
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OM: DynamicObject extends TruffleObject, add default implementation
Matthias Grimmer <grimmer@ssw.jku.at>
parents:
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366 } |
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Truffle: initial commit of object API implementation
Andreas Woess <andreas.woess@jku.at>
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367 } |