Mercurial > hg > graal-jvmci-8
annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/frame/FrameDescriptor.java @ 11279:494b818b527c
Adding "Classpath" exception to the classes in the com.oracle.truffle.api and the com.oracle.truffle.api.dsl package.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 09 Aug 2013 11:55:20 +0200 |
parents | 5d91b0b67cba |
children | 75d9b7aedcfd |
rev | line source |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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1 /* |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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2 * Copyright (c) 2012, 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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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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4 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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5 * This code is free software; you can redistribute it and/or modify it |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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6 * under the terms of the GNU General Public License version 2 only, as |
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Adding "Classpath" exception to the classes in the com.oracle.truffle.api and the com.oracle.truffle.api.dsl package.
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7 * published by the Free Software Foundation. Oracle designates this |
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Adding "Classpath" exception to the classes in the com.oracle.truffle.api and the com.oracle.truffle.api.dsl package.
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8 * particular file as subject to the "Classpath" exception as provided |
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Adding "Classpath" exception to the classes in the com.oracle.truffle.api and the com.oracle.truffle.api.dsl package.
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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15 * accompanied this code). |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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16 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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17 * You should have received a copy of the GNU General Public License version |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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24 */ |
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25 package com.oracle.truffle.api.frame; |
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26 |
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27 import java.util.*; |
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28 |
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29 import com.oracle.truffle.api.*; |
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30 import com.oracle.truffle.api.impl.*; |
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31 |
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32 /** |
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33 * Descriptor of the slots of frame objects. Multiple frame instances are associated with one such |
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34 * descriptor. |
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35 */ |
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36 public final class FrameDescriptor implements Cloneable { |
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37 |
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38 private final FrameTypeConversion typeConversion; |
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39 private final ArrayList<FrameSlotImpl> slots; |
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40 private final HashMap<Object, FrameSlotImpl> identifierToSlotMap; |
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41 private Assumption version; |
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42 |
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43 public FrameDescriptor() { |
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44 this(DefaultFrameTypeConversion.getInstance()); |
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45 } |
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46 |
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47 public FrameDescriptor(FrameTypeConversion typeConversion) { |
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48 this.typeConversion = typeConversion; |
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49 slots = new ArrayList<>(); |
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50 identifierToSlotMap = new HashMap<>(); |
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51 version = createVersion(); |
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52 } |
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53 |
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54 public FrameSlot addFrameSlot(Object identifier) { |
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55 return addFrameSlot(identifier, FrameSlotKind.Illegal); |
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56 } |
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57 |
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58 public FrameSlot addFrameSlot(Object identifier, FrameSlotKind kind) { |
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59 assert !identifierToSlotMap.containsKey(identifier); |
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60 FrameSlotImpl slot = new FrameSlotImpl(this, identifier, slots.size(), kind); |
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61 slots.add(slot); |
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62 identifierToSlotMap.put(identifier, slot); |
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63 updateVersion(); |
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64 return slot; |
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65 } |
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66 |
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67 public FrameSlot findFrameSlot(Object identifier) { |
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68 return identifierToSlotMap.get(identifier); |
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69 } |
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70 |
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71 public FrameSlot findOrAddFrameSlot(Object identifier) { |
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72 FrameSlot result = findFrameSlot(identifier); |
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73 if (result != null) { |
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74 return result; |
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75 } |
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76 return addFrameSlot(identifier); |
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77 } |
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78 |
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79 public FrameSlot findOrAddFrameSlot(Object identifier, FrameSlotKind kind) { |
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80 FrameSlot result = findFrameSlot(identifier); |
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81 if (result != null) { |
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82 return result; |
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83 } |
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84 return addFrameSlot(identifier, kind); |
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85 } |
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86 |
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87 public int getSize() { |
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88 return slots.size(); |
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89 } |
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90 |
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91 public List<? extends FrameSlot> getSlots() { |
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92 return Collections.unmodifiableList(slots); |
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93 } |
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94 |
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95 /** |
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96 * (db) to retrieve the list of all the identifiers associated with this frame descriptor. |
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97 * |
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98 * @return the list of all the identifiers in this frame descriptor |
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99 */ |
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100 public Set<Object> getIdentifiers() { |
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101 return Collections.unmodifiableSet(identifierToSlotMap.keySet()); |
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102 } |
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103 |
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104 /** |
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105 * (db): this method is used for creating a clone of the {@link FrameDescriptor} object ready |
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106 * for parallel execution. |
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107 */ |
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108 public FrameDescriptor copy() { |
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109 FrameDescriptor clonedFrameDescriptor = new FrameDescriptor(this.typeConversion); |
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110 for (int i = 0; i < this.getSlots().size(); i++) { |
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111 Object identifier = this.getSlots().get(i).getIdentifier(); |
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112 clonedFrameDescriptor.addFrameSlot(identifier); |
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113 } |
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114 return clonedFrameDescriptor; |
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115 } |
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116 |
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117 public FrameDescriptor shallowCopy() { |
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118 FrameDescriptor clonedFrameDescriptor = new FrameDescriptor(this.typeConversion); |
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119 clonedFrameDescriptor.slots.addAll(slots); |
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120 clonedFrameDescriptor.identifierToSlotMap.putAll(identifierToSlotMap); |
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121 return clonedFrameDescriptor; |
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122 } |
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123 |
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124 void updateVersion() { |
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125 version.invalidate(); |
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126 version = createVersion(); |
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127 } |
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128 |
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129 public Assumption getVersion() { |
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130 return version; |
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131 } |
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132 |
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133 private static Assumption createVersion() { |
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134 return Truffle.getRuntime().createAssumption("frame version"); |
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135 } |
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136 |
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137 public FrameTypeConversion getTypeConversion() { |
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138 return typeConversion; |
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139 } |
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140 } |