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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/NodeClass.java @ 22157:dc83cc1f94f2

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Using fully qualified imports
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 16 Sep 2015 11:33:22 +0200
parents 9c8c0937da41
children 4df3d8fd6cfd
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1 /*
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2 * Copyright (c) 2012, 2015, 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. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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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24 */
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25 package com.oracle.truffle.api.nodes;
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26
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27 import com.oracle.truffle.api.nodes.Node.Child;
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28 import com.oracle.truffle.api.nodes.Node.Children;
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29 import com.oracle.truffle.api.nodes.NodeFieldAccessor.NodeFieldKind;
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30 import java.lang.reflect.Field;
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31 import java.lang.reflect.Modifier;
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32 import java.security.AccessController;
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33 import java.security.PrivilegedAction;
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34 import java.util.ArrayList;
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35 import java.util.Iterator;
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36 import java.util.List;
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37
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38 /**
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39 * Information about a {@link Node} class. A single instance of this class is allocated for every
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40 * subclass of {@link Node} that is used.
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41 */
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42 public final class NodeClass {
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43 private static final ClassValue<NodeClass> nodeClasses = new ClassValue<NodeClass>() {
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44 @SuppressWarnings("unchecked")
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45 @Override
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46 protected NodeClass computeValue(final Class<?> clazz) {
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47 assert Node.class.isAssignableFrom(clazz);
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48 return AccessController.doPrivileged(new PrivilegedAction<NodeClass>() {
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49 public NodeClass run() {
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50 return new NodeClass((Class<? extends Node>) clazz);
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51 }
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52 });
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53 }
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54 };
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55
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56 // The comprehensive list of all fields.
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57 private final NodeFieldAccessor[] fields;
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58 // Separate arrays for the frequently accessed fields.
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59 private final NodeFieldAccessor parentField;
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60 private final NodeFieldAccessor nodeClassField;
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61 private final NodeFieldAccessor[] childFields;
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62 private final NodeFieldAccessor[] childrenFields;
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63 private final NodeFieldAccessor[] cloneableFields;
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64
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65 private final Class<? extends Node> clazz;
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66
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67 public static NodeClass get(Class<? extends Node> clazz) {
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68 return nodeClasses.get(clazz);
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69 }
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70
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71 public static NodeClass get(Node clazz) {
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72 return clazz.getNodeClass();
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73 }
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74
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75 public NodeClass(Class<? extends Node> clazz) {
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76 List<NodeFieldAccessor> fieldsList = new ArrayList<>();
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77 NodeFieldAccessor parentFieldTmp = null;
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78 NodeFieldAccessor nodeClassFieldTmp = null;
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79 List<NodeFieldAccessor> childFieldList = new ArrayList<>();
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80 List<NodeFieldAccessor> childrenFieldList = new ArrayList<>();
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81 List<NodeFieldAccessor> cloneableFieldList = new ArrayList<>();
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82
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83 for (Field field : NodeUtil.getAllFields(clazz)) {
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84 if (Modifier.isStatic(field.getModifiers()) || field.isSynthetic()) {
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85 continue;
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86 }
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87
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88 NodeFieldAccessor nodeField;
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89 if (field.getDeclaringClass() == Node.class && field.getName().equals("parent")) {
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90 assert Node.class.isAssignableFrom(field.getType());
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91 nodeField = NodeFieldAccessor.create(NodeFieldKind.PARENT, field);
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92 parentFieldTmp = nodeField;
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93 } else if (field.getDeclaringClass() == Node.class && field.getName().equals("nodeClass")) {
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94 assert NodeClass.class.isAssignableFrom(field.getType());
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95 nodeField = NodeFieldAccessor.create(NodeFieldKind.NODE_CLASS, field);
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96 nodeClassFieldTmp = nodeField;
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97 } else if (field.getAnnotation(Child.class) != null) {
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98 checkChildField(field);
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99 nodeField = NodeFieldAccessor.create(NodeFieldKind.CHILD, field);
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100 childFieldList.add(nodeField);
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101 } else if (field.getAnnotation(Children.class) != null) {
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102 checkChildrenField(field);
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103 nodeField = NodeFieldAccessor.create(NodeFieldKind.CHILDREN, field);
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104 childrenFieldList.add(nodeField);
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105 } else {
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106 nodeField = NodeFieldAccessor.create(NodeFieldKind.DATA, field);
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107 if (NodeCloneable.class.isAssignableFrom(field.getType())) {
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108 cloneableFieldList.add(nodeField);
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109 }
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110 }
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111 fieldsList.add(nodeField);
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112 }
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113
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114 if (parentFieldTmp == null) {
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115 throw new AssertionError("parent field not found");
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116 }
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117
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118 this.fields = fieldsList.toArray(new NodeFieldAccessor[fieldsList.size()]);
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119 this.nodeClassField = nodeClassFieldTmp;
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120 this.parentField = parentFieldTmp;
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121 this.childFields = childFieldList.toArray(new NodeFieldAccessor[childFieldList.size()]);
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122 this.childrenFields = childrenFieldList.toArray(new NodeFieldAccessor[childrenFieldList.size()]);
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123 this.cloneableFields = cloneableFieldList.toArray(new NodeFieldAccessor[cloneableFieldList.size()]);
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124 this.clazz = clazz;
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125 }
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126
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Christian Humer <christian.humer@gmail.com>
parents: 20129
diff changeset
127 public NodeFieldAccessor getNodeClassField() {
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Christian Humer <christian.humer@gmail.com>
parents: 20129
diff changeset
128 return nodeClassField;
8dc73c226c63 Truffle: cache NodeClass lookup in Node.
Christian Humer <christian.humer@gmail.com>
parents: 20129
diff changeset
129 }
8dc73c226c63 Truffle: cache NodeClass lookup in Node.
Christian Humer <christian.humer@gmail.com>
parents: 20129
diff changeset
130
20129
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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131 public NodeFieldAccessor[] getCloneableFields() {
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Christian Humer <christian.humer@gmail.com>
parents:
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132 return cloneableFields;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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133 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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134
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
135 private static boolean isNodeType(Class<?> clazz) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
136 return Node.class.isAssignableFrom(clazz) || (clazz.isInterface() && NodeInterface.class.isAssignableFrom(clazz));
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
137 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
138
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
139 private static void checkChildField(Field field) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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140 if (!isNodeType(field.getType())) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
141 throw new AssertionError("@Child field type must be a subclass of Node or an interface extending NodeInterface (" + field + ")");
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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142 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
143 if (Modifier.isFinal(field.getModifiers())) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
144 throw new AssertionError("@Child field must not be final (" + field + ")");
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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145 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
146 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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147
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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148 private static void checkChildrenField(Field field) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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149 if (!(field.getType().isArray() && isNodeType(field.getType().getComponentType()))) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
150 throw new AssertionError("@Children field type must be an array of a subclass of Node or an interface extending NodeInterface (" + field + ")");
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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151 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
152 if (!Modifier.isFinal(field.getModifiers())) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
153 throw new AssertionError("@Children field must be final (" + field + ")");
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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154 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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155 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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156
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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157 public NodeFieldAccessor[] getFields() {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
158 return fields;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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159 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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160
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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161 public NodeFieldAccessor getParentField() {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
162 return parentField;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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163 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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164
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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165 public NodeFieldAccessor[] getChildFields() {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
166 return childFields;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
167 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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168
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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169 public NodeFieldAccessor[] getChildrenFields() {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
170 return childrenFields;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
171 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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172
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
173 @Override
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
174 public int hashCode() {
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Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
175 return clazz.hashCode();
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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176 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
177
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
178 @Override
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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179 public boolean equals(Object obj) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
180 if (obj instanceof NodeClass) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
181 NodeClass other = (NodeClass) obj;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
182 return clazz.equals(other.clazz);
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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183 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
184 return false;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
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185 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
186
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
187 public Iterator<Node> makeIterator(Node node) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
188 assert clazz.isInstance(node);
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Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
189 return new NodeIterator(this, node);
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
190 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
191
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
192 private static final class NodeIterator implements Iterator<Node> {
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Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
193 private final NodeFieldAccessor[] childFields;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
194 private final NodeFieldAccessor[] childrenFields;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
195 private final Node node;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
196 private final int childrenCount;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
197 private int index;
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Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
198
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Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
199 protected NodeIterator(NodeClass nodeClass, Node node) {
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Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
200 this.childFields = nodeClass.getChildFields();
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
201 this.childrenFields = nodeClass.getChildrenFields();
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Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
202 this.node = node;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
203 this.childrenCount = childrenCount();
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
204 this.index = 0;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
205 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
206
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
207 private int childrenCount() {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
208 int nodeCount = childFields.length;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
209 for (NodeFieldAccessor childrenField : childrenFields) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
210 Object[] children = ((Object[]) childrenField.getObject(node));
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
211 if (children != null) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
212 nodeCount += children.length;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
213 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
214 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
215 return nodeCount;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
216 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
217
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
218 private Node nodeAt(int idx) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
219 int nodeCount = childFields.length;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
220 if (idx < nodeCount) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
221 return (Node) childFields[idx].getObject(node);
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
222 } else {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
223 for (NodeFieldAccessor childrenField : childrenFields) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
224 Object[] nodeArray = (Object[]) childrenField.getObject(node);
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
225 if (idx < nodeCount + nodeArray.length) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
226 return (Node) nodeArray[idx - nodeCount];
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
227 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
228 nodeCount += nodeArray.length;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
229 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
230 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
231 return null;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
232 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
233
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
234 private void forward() {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
235 if (index < childrenCount) {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
236 index++;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
237 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
238 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
239
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
240 public boolean hasNext() {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
241 return index < childrenCount;
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
242 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
243
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
244 public Node next() {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
245 try {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
246 return nodeAt(index);
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
247 } finally {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
248 forward();
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
249 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
250 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
251
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
252 public void remove() {
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
253 throw new UnsupportedOperationException();
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
254 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
255 }
5b7db8941fd7 Truffle: make NodeClass and NodeField a top-level class.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
256 }