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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/NodeUtil.java @ 9754:98b004bf3985

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Refactoring of NodeUtil to centralize the use of reflection
author Christian Wimmer <christian.wimmer@oracle.com>
date Thu, 16 May 2013 17:03:18 -0700
parents e6fe35d64b71
children 84b944726df2
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1 /*
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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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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.api.nodes;
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24
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25 import java.io.*;
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26 import java.lang.annotation.*;
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27 import java.lang.reflect.*;
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28 import java.util.*;
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29
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30 import sun.misc.*;
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31
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32 import com.oracle.truffle.api.nodes.Node.Child;
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33 import com.oracle.truffle.api.nodes.Node.Children;
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34
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35 /**
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36 * Utility class that manages the special access methods for node instances.
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37 */
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38 public class NodeUtil {
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39
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40 /**
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41 * Interface that allows the customization of field offsets used for {@link Unsafe} field
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42 * accesses.
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43 */
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44 public interface FieldOffsetProvider {
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45
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46 long objectFieldOffset(Field field);
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47 }
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48
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49 private static final FieldOffsetProvider unsafeFieldOffsetProvider = new FieldOffsetProvider() {
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50
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51 @Override
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52 public long objectFieldOffset(Field field) {
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53 return unsafe.objectFieldOffset(field);
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54 }
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55 };
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56
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57 public static enum NodeFieldKind {
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58 /** The single {@link Node#getParent() parent} field. */
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59 PARENT,
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60 /** A field annotated with {@link Child}. */
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61 CHILD,
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62 /** A field annotated with {@link Children}. */
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63 CHILDREN,
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64 /** A normal non-child data field of the node. */
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65 DATA
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66 }
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67
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68 /**
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69 * Information about a field in a {@link Node} class.
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70 */
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71 public static final class NodeField {
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72
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73 private final NodeFieldKind kind;
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74 private final Class<?> type;
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75 private final String name;
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76 private long offset;
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77
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78 protected NodeField(NodeFieldKind kind, Class<?> type, String name, long offset) {
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79 this.kind = kind;
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80 this.type = type;
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81 this.name = name;
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82 this.offset = offset;
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83 }
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84
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85 public NodeFieldKind getKind() {
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86 return kind;
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87 }
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88
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89 public Class<?> getType() {
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90 return type;
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91 }
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92
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93 public String getName() {
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94 return name;
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95 }
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96
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97 public long getOffset() {
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98 return offset;
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99 }
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100
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101 public Object loadValue(Node node) {
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102 if (type == boolean.class) {
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103 return unsafe.getBoolean(node, offset);
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104 } else if (type == byte.class) {
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105 return unsafe.getByte(node, offset);
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106 } else if (type == short.class) {
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107 return unsafe.getShort(node, offset);
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108 } else if (type == char.class) {
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109 return unsafe.getChar(node, offset);
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110 } else if (type == int.class) {
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111 return unsafe.getInt(node, offset);
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112 } else if (type == long.class) {
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113 return unsafe.getLong(node, offset);
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114 } else if (type == float.class) {
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115 return unsafe.getFloat(node, offset);
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116 } else if (type == double.class) {
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117 return unsafe.getDouble(node, offset);
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118 } else {
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119 return unsafe.getObject(node, offset);
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120 }
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121 }
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122 }
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123
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124 /**
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125 * Information about a {@link Node} class. A single instance of this class is allocated for
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126 * every subclass of {@link Node} that is used.
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127 */
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128 public static final class NodeClass {
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129
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130 private static final Map<Class<?>, NodeClass> nodeClasses = new IdentityHashMap<>();
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131
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132 // The comprehensive list of all fields.
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133 private final NodeField[] fields;
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134 // Separate arrays for the frequently accessed field offsets.
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135 private final long parentOffset;
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136 private final long[] childOffsets;
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137 private final long[] childrenOffsets;
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138
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139 public static NodeClass get(Class<? extends Node> clazz) {
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140 NodeClass nodeClass = nodeClasses.get(clazz);
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141 if (nodeClass == null) {
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142 nodeClass = new NodeClass(clazz, unsafeFieldOffsetProvider);
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143 nodeClasses.put(clazz, nodeClass);
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144 }
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145 return nodeClass;
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146 }
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147
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148 public NodeClass(Class<? extends Node> clazz, FieldOffsetProvider fieldOffsetProvider) {
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149 List<NodeField> fieldsList = new ArrayList<>();
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150 List<Long> parentOffsetsList = new ArrayList<>();
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151 List<Long> childOffsetsList = new ArrayList<>();
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152 List<Long> childrenOffsetsList = new ArrayList<>();
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153
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154 for (Field field : getAllFields(clazz)) {
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155 if (Modifier.isStatic(field.getModifiers()) || field.isSynthetic()) {
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156 continue;
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157 }
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158
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159 NodeFieldKind kind;
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160 if (Node.class.isAssignableFrom(field.getType()) && field.getName().equals("parent") && field.getDeclaringClass() == Node.class) {
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161 kind = NodeFieldKind.PARENT;
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162 parentOffsetsList.add(fieldOffsetProvider.objectFieldOffset(field));
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163 } else if (Node.class.isAssignableFrom(field.getType()) && field.getAnnotation(Child.class) != null) {
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164 kind = NodeFieldKind.CHILD;
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165 childOffsetsList.add(fieldOffsetProvider.objectFieldOffset(field));
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166 } else if (field.getType().isArray() && Node.class.isAssignableFrom(field.getType().getComponentType()) && field.getAnnotation(Children.class) != null) {
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167 kind = NodeFieldKind.CHILDREN;
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168 childrenOffsetsList.add(fieldOffsetProvider.objectFieldOffset(field));
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169 } else {
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170 kind = NodeFieldKind.DATA;
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171 }
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172 fieldsList.add(new NodeField(kind, field.getType(), field.getName(), fieldOffsetProvider.objectFieldOffset(field)));
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173 }
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174 this.fields = fieldsList.toArray(new NodeField[fieldsList.size()]);
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175 assert parentOffsetsList.size() == 1 : "must have exactly one parent field";
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176 this.parentOffset = parentOffsetsList.get(0);
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177 this.childOffsets = toLongArray(childOffsetsList);
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178 this.childrenOffsets = toLongArray(childrenOffsetsList);
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179 }
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180
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181 public NodeField[] getFields() {
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182 return fields;
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183 }
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184
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185 public long getParentOffset() {
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186 return parentOffset;
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187 }
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188
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189 public long[] getChildOffsets() {
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190 return childOffsets;
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191 }
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192
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193 public long[] getChildrenOffsets() {
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194 return childrenOffsets;
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195 }
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196 }
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197
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198 static class NodeIterator implements Iterator<Node> {
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199
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200 private final Node node;
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201 private final NodeClass nodeClass;
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202 private final int childrenCount;
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203 private int index;
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204
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205 protected NodeIterator(Node node) {
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206 this.node = node;
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207 this.index = 0;
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208 this.nodeClass = NodeClass.get(node.getClass());
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209 this.childrenCount = childrenCount();
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210 }
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211
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212 private int childrenCount() {
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213 int nodeCount = nodeClass.childOffsets.length;
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214 for (long fieldOffset : nodeClass.childrenOffsets) {
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215 Node[] children = ((Node[]) unsafe.getObject(node, fieldOffset));
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216 if (children != null) {
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217 nodeCount += children.length;
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218 }
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219 }
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220 return nodeCount;
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221 }
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222
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223 private Node nodeAt(int idx) {
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224 int nodeCount = nodeClass.childOffsets.length;
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225 if (idx < nodeCount) {
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226 return (Node) unsafe.getObject(node, nodeClass.childOffsets[idx]);
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227 } else {
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228 for (long fieldOffset : nodeClass.childrenOffsets) {
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229 Node[] nodeArray = (Node[]) unsafe.getObject(node, fieldOffset);
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230 if (idx < nodeCount + nodeArray.length) {
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231 return nodeArray[idx - nodeCount];
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232 }
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233 nodeCount += nodeArray.length;
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234 }
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235 }
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236 return null;
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237 }
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238
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239 private void forward() {
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240 if (index < childrenCount) {
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241 index++;
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242 }
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243 }
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244
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245 @Override
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246 public boolean hasNext() {
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247 return index < childrenCount;
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248 }
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249
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250 @Override
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251 public Node next() {
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252 try {
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253 return nodeAt(index);
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254 } finally {
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255 forward();
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256 }
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257 }
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258
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259 @Override
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260 public void remove() {
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261 throw new UnsupportedOperationException();
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262 }
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263 }
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264
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265 private static long[] toLongArray(List<Long> list) {
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266 long[] array = new long[list.size()];
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267 for (int i = 0; i < list.size(); i++) {
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268 array[i] = list.get(i);
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269 }
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270 return array;
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271 }
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272
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273 protected static final Unsafe unsafe = getUnsafe();
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274
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275 private static Unsafe getUnsafe() {
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276 try {
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277 return Unsafe.getUnsafe();
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278 } catch (SecurityException e) {
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279 }
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280 try {
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281 Field theUnsafeInstance = Unsafe.class.getDeclaredField("theUnsafe");
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282 theUnsafeInstance.setAccessible(true);
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283 return (Unsafe) theUnsafeInstance.get(Unsafe.class);
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284 } catch (Exception e) {
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285 throw new RuntimeException("exception while trying to get Unsafe.theUnsafe via reflection:", e);
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286 }
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287 }
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288
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289 @SuppressWarnings("unchecked")
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290 public static <T extends Node> T cloneNode(T orig) {
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291 Class<? extends Node> clazz = orig.getClass();
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292 NodeClass nodeClass = NodeClass.get(clazz);
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293 Node clone = orig.copy();
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294 if (clone == null) {
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295 return null;
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296 }
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297
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298 unsafe.putObject(clone, nodeClass.parentOffset, null);
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299
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300 for (long fieldOffset : nodeClass.childOffsets) {
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301 Node child = (Node) unsafe.getObject(orig, fieldOffset);
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302 if (child != null) {
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303 Node clonedChild = cloneNode(child);
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304 if (clonedChild == null) {
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305 return null;
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306 }
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307
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308 unsafe.putObject(clonedChild, nodeClass.parentOffset, clone);
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309 unsafe.putObject(clone, fieldOffset, clonedChild);
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310 }
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311 }
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312 for (long fieldOffset : nodeClass.childrenOffsets) {
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313 Node[] children = (Node[]) unsafe.getObject(orig, fieldOffset);
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314 if (children != null) {
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315 Node[] clonedChildren = children.clone();
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316 Arrays.fill(clonedChildren, null);
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317 for (int i = 0; i < children.length; i++) {
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318 Node clonedChild = cloneNode(children[i]);
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319 if (clonedChild == null) {
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320 return null;
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321 }
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322
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323 clonedChildren[i] = clonedChild;
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324 unsafe.putObject(clonedChild, nodeClass.parentOffset, clone);
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325 }
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326 unsafe.putObject(clone, fieldOffset, clonedChildren);
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327 }
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328 }
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329 return (T) clone;
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330 }
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331
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332 public static List<Node> findNodeChildren(Node node) {
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333 List<Node> nodes = new ArrayList<>();
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334 NodeClass nodeClass = NodeClass.get(node.getClass());
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335
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336 for (long fieldOffset : nodeClass.childOffsets) {
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337 Object child = unsafe.getObject(node, fieldOffset);
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338 if (child != null) {
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339 nodes.add((Node) child);
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340 }
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341 }
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342 for (long fieldOffset : nodeClass.childrenOffsets) {
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343 Node[] children = (Node[]) unsafe.getObject(node, fieldOffset);
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344 if (children != null) {
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345 nodes.addAll(Arrays.asList(children));
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346 }
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347 }
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348
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349 return nodes;
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350 }
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351
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352 public static void replaceChild(Node parent, Node oldChild, Node newChild) {
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353 NodeClass nodeClass = NodeClass.get(parent.getClass());
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354
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355 for (long fieldOffset : nodeClass.childOffsets) {
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356 if (unsafe.getObject(parent, fieldOffset) == oldChild) {
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357 unsafe.putObject(parent, fieldOffset, newChild);
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358 }
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359 }
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360 for (long fieldOffset : nodeClass.childrenOffsets) {
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361 Node[] array = (Node[]) unsafe.getObject(parent, fieldOffset);
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362 if (array != null) {
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363 for (int i = 0; i < array.length; i++) {
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364 if (array[i] == oldChild) {
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365 array[i] = newChild;
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366 return;
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367 }
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368 }
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369 }
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370 }
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371 }
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372
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373 /** Returns all declared fields in the class hierarchy. */
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374 private static Field[] getAllFields(Class<? extends Object> clazz) {
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375 Field[] declaredFields = clazz.getDeclaredFields();
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376 if (clazz.getSuperclass() != null) {
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377 return concat(getAllFields(clazz.getSuperclass()), declaredFields);
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378 }
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379 return declaredFields;
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380 }
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381
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382 public static <T> T[] concat(T[] first, T[] second) {
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383 T[] result = Arrays.copyOf(first, first.length + second.length);
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384 System.arraycopy(second, 0, result, first.length, second.length);
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385 return result;
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386 }
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387
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388 /** find annotation in class/interface hierarchy. */
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389 public static <T extends Annotation> T findAnnotation(Class<?> clazz, Class<T> annotationClass) {
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390 if (clazz.getAnnotation(annotationClass) != null) {
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391 return clazz.getAnnotation(annotationClass);
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392 } else {
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393 for (Class<?> intf : clazz.getInterfaces()) {
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394 if (intf.getAnnotation(annotationClass) != null) {
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395 return intf.getAnnotation(annotationClass);
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396 }
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397 }
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398 if (clazz.getSuperclass() != null) {
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399 return findAnnotation(clazz.getSuperclass(), annotationClass);
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400 }
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401 }
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402 return null;
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403 }
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404
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405 @SuppressWarnings("unchecked")
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406 public static <T extends Node> T findParent(final Node start, final Class<T> clazz) {
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407 assert start != null;
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408 if (clazz.isInstance(start.getParent())) {
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409 return (T) start.getParent();
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410 } else {
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411 return start.getParent() != null ? findParent(start.getParent(), clazz) : null;
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412 }
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413 }
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414
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415 @SuppressWarnings("unchecked")
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416 public static <I> I findParentInterface(final Node start, final Class<I> clazz) {
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417 assert start != null;
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418 if (clazz.isInstance(start.getParent())) {
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419 return (I) start.getParent();
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420 } else {
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421 return (start.getParent() != null ? findParentInterface(start.getParent(), clazz) : null);
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422 }
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423 }
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424
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425 @SuppressWarnings("unchecked")
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426 public static <T> T findFirstNodeInstance(Node root, Class<T> clazz) {
e2965e5cd474 Fixed Truffle child iterator should only iterate children which are annotated with @Child or @Children.
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427 for (Node childNode : findNodeChildren(root)) {
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428 if (clazz.isInstance(childNode)) {
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429 return (T) childNode;
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430 } else {
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0285fbb8b05d NodeUtil.findFirstNodeInstance bug fix
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431 T node = findFirstNodeInstance(childNode, clazz);
0285fbb8b05d NodeUtil.findFirstNodeInstance bug fix
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432 if (node != null) {
0285fbb8b05d NodeUtil.findFirstNodeInstance bug fix
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433 return node;
0285fbb8b05d NodeUtil.findFirstNodeInstance bug fix
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434 }
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435 }
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436 }
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437 return null;
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438 }
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439
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440 public static <T extends Node> List<T> findAllNodeInstances(final Node root, final Class<T> clazz) {
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441 final List<T> nodeList = new ArrayList<>();
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442 root.accept(new NodeVisitor() {
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443
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444 @SuppressWarnings("unchecked")
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445 @Override
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446 public boolean visit(Node node) {
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447 if (clazz.isInstance(node)) {
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448 nodeList.add((T) node);
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449 }
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450 return true;
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451 }
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452 });
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453 return nodeList;
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454 }
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455
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456 // Don't visit found node instances.
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457 public static <T extends Node> List<T> findNodeInstancesShallow(final Node root, final Class<T> clazz) {
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458 final List<T> nodeList = new ArrayList<>();
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diff changeset
459 root.accept(new NodeVisitor() {
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460
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461 @SuppressWarnings("unchecked")
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462 @Override
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463 public boolean visit(Node node) {
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464 if (clazz.isInstance(node)) {
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465 nodeList.add((T) node);
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466 return false;
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467 }
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468 return true;
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469 }
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470 });
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471 return nodeList;
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472 }
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473
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474 /** Find node instances within current function only (not in nested functions). */
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475 public static <T extends Node> List<T> findNodeInstancesInFunction(final Node root, final Class<T> clazz) {
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476 final List<T> nodeList = new ArrayList<>();
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477 root.accept(new NodeVisitor() {
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478
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479 @SuppressWarnings("unchecked")
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480 @Override
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481 public boolean visit(Node node) {
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482 if (clazz.isInstance(node)) {
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483 nodeList.add((T) node);
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484 } else if (node instanceof RootNode && node != root) {
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485 return false;
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486 }
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487 return true;
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488 }
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489 });
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490 return nodeList;
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491 }
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492
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493 public static <I> List<I> findNodeInstancesInFunctionInterface(final Node root, final Class<I> clazz) {
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494 final List<I> nodeList = new ArrayList<>();
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495 root.accept(new NodeVisitor() {
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496
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497 @SuppressWarnings("unchecked")
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498 @Override
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499 public boolean visit(Node node) {
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500 if (clazz.isInstance(node)) {
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501 nodeList.add((I) node);
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502 } else if (node instanceof RootNode && node != root) {
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503 return false;
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504 }
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505 return true;
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506 }
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507 });
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508 return nodeList;
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509 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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510
9754
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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511 public static String printCompactTreeToString(Node node) {
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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512 StringWriter out = new StringWriter();
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513 printCompactTree(new PrintWriter(out), null, node, 1);
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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514 return out.toString();
7267
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515 }
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516
9754
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
517 public static void printCompactTree(OutputStream out, Node node) {
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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518 printCompactTree(new PrintWriter(out), null, node, 1);
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519 }
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520
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98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
Christian Wimmer <christian.wimmer@oracle.com>
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diff changeset
521 private static void printCompactTree(PrintWriter p, Node parent, Node node, int level) {
9538
e6fe35d64b71 Implemented a method to produce a compact string representation of the truffle tree which just shows the nodes and their children but no data fields.
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diff changeset
522 if (node == null) {
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523 return;
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524 }
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525 for (int i = 0; i < level; i++) {
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diff changeset
526 p.print(" ");
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527 }
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Christian Humer <christian.humer@gmail.com>
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528 if (parent == null) {
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529 p.println(node.getClass().getSimpleName());
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diff changeset
530 } else {
9754
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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parents: 9538
diff changeset
531 String fieldName = "unknownField";
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532 NodeField[] fields = NodeClass.get(parent.getClass()).fields;
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diff changeset
533 for (NodeField field : fields) {
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534 Object value = field.loadValue(parent);
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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535 if (value == node) {
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Christian Wimmer <christian.wimmer@oracle.com>
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536 fieldName = field.getName();
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537 break;
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538 } else if (value instanceof Node[]) {
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parents: 9538
diff changeset
539 int index = 0;
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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parents: 9538
diff changeset
540 for (Node arrayNode : (Node[]) value) {
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parents: 9538
diff changeset
541 if (arrayNode == node) {
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 9538
diff changeset
542 fieldName = field.getName() + "[" + index + "]";
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parents: 9538
diff changeset
543 break;
9538
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544 }
9754
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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545 index++;
9538
e6fe35d64b71 Implemented a method to produce a compact string representation of the truffle tree which just shows the nodes and their children but no data fields.
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546 }
e6fe35d64b71 Implemented a method to produce a compact string representation of the truffle tree which just shows the nodes and their children but no data fields.
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diff changeset
547 }
e6fe35d64b71 Implemented a method to produce a compact string representation of the truffle tree which just shows the nodes and their children but no data fields.
Christian Humer <christian.humer@gmail.com>
parents: 9537
diff changeset
548 }
e6fe35d64b71 Implemented a method to produce a compact string representation of the truffle tree which just shows the nodes and their children but no data fields.
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diff changeset
549 p.print(fieldName);
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Christian Humer <christian.humer@gmail.com>
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550 p.print(" = ");
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551 p.println(node.getClass().getSimpleName());
e6fe35d64b71 Implemented a method to produce a compact string representation of the truffle tree which just shows the nodes and their children but no data fields.
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parents: 9537
diff changeset
552 }
e6fe35d64b71 Implemented a method to produce a compact string representation of the truffle tree which just shows the nodes and their children but no data fields.
Christian Humer <christian.humer@gmail.com>
parents: 9537
diff changeset
553
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parents: 9537
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554 for (Node child : node.getChildren()) {
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555 printCompactTree(p, node, child, level + 1);
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556 }
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557 p.flush();
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558 }
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Christian Humer <christian.humer@gmail.com>
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559
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560 /**
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561 * Prints a human readable form of a {@link Node} AST to the given {@link PrintStream}. This
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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562 * print method does not check for cycles in the node structure.
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563 *
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564 * @param out the stream to print to.
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565 * @param node the root node to write
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566 */
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567 public static void printTree(OutputStream out, Node node) {
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568 printTree(new PrintWriter(out), node);
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569 }
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570
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571 public static String printTreeToString(Node node) {
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572 StringWriter out = new StringWriter();
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573 printTree(new PrintWriter(out), node);
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574 return out.toString();
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575 }
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576
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577 public static void printTree(PrintWriter p, Node node) {
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578 printTree(p, node, 1);
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579 p.println();
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580 p.flush();
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581 }
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582
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583 private static void printTree(PrintWriter p, Node node, int level) {
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584 if (node == null) {
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585 p.print("null");
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586 return;
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587 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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588
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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589 p.print(node.getClass().getSimpleName());
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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590
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diff changeset
591 ArrayList<NodeField> childFields = new ArrayList<>();
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parents: 9538
diff changeset
592 String sep = "";
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593 p.print("(");
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diff changeset
594 for (NodeField field : NodeClass.get(node.getClass()).fields) {
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parents: 9538
diff changeset
595 if (field.getKind() == NodeFieldKind.CHILD || field.getKind() == NodeFieldKind.CHILDREN) {
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
596 childFields.add(field);
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
597 } else if (field.getKind() == NodeFieldKind.DATA) {
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
598 p.print(sep);
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diff changeset
599 sep = ", ";
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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600
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601 p.print(field.getName());
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602 p.print(" = ");
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603 p.print(field.loadValue(node));
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604 }
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605 }
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606 p.print(")");
a4b84ba6dc2e 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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
607
a4b84ba6dc2e 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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608 if (childFields.size() != 0) {
a4b84ba6dc2e 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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diff changeset
609 p.print(" {");
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diff changeset
610 for (NodeField field : childFields) {
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
611 printNewLine(p, level);
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
612 p.print(field.getName());
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diff changeset
613
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614 Object value = field.loadValue(node);
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diff changeset
615 if (value == null) {
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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616 p.print(" = null ");
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diff changeset
617 } else if (field.getKind() == NodeFieldKind.CHILD) {
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diff changeset
618 p.print(" = ");
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
619 printTree(p, (Node) value, level + 1);
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
620 } else if (field.getKind() == NodeFieldKind.CHILDREN) {
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diff changeset
621 Node[] children = (Node[]) value;
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622 p.print(" = [");
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diff changeset
623 sep = "";
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
624 for (Node child : children) {
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
625 p.print(sep);
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
626 sep = ", ";
98b004bf3985 Refactoring of NodeUtil to centralize the use of reflection
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diff changeset
627 printTree(p, child, level + 1);
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628 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
629 p.print("]");
a4b84ba6dc2e 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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diff changeset
630 }
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diff changeset
631 }
a4b84ba6dc2e 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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
632 printNewLine(p, level - 1);
a4b84ba6dc2e 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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
633 p.print("}");
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diff changeset
634 }
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635 }
a4b84ba6dc2e 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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
636
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diff changeset
637 private static void printNewLine(PrintWriter p, int level) {
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638 p.println();
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diff changeset
639 for (int i = 0; i < level; i++) {
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diff changeset
640 p.print(" ");
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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641 }
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642 }
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643 }