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annotate truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/NodeCodeGenerator.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
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1 /*
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2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.dsl.processor.generator;
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24
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25 import com.oracle.truffle.api.dsl.NodeFactory;
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26 import com.oracle.truffle.dsl.processor.ProcessorContext;
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27 import com.oracle.truffle.dsl.processor.java.ElementUtils;
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28 import static com.oracle.truffle.dsl.processor.java.ElementUtils.modifiers;
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29 import com.oracle.truffle.dsl.processor.java.model.CodeExecutableElement;
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30 import com.oracle.truffle.dsl.processor.java.model.CodeTreeBuilder;
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31 import com.oracle.truffle.dsl.processor.java.model.CodeTypeElement;
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32 import com.oracle.truffle.dsl.processor.model.NodeData;
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33 import java.util.ArrayList;
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34 import java.util.Arrays;
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35 import java.util.Collections;
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36 import java.util.List;
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37 import java.util.Set;
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38 import javax.lang.model.element.ExecutableElement;
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39 import javax.lang.model.element.Modifier;
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40 import static javax.lang.model.element.Modifier.PUBLIC;
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41 import static javax.lang.model.element.Modifier.STATIC;
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42 import javax.lang.model.type.TypeMirror;
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43 import javax.lang.model.util.Types;
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44
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45 public class NodeCodeGenerator extends CodeTypeElementFactory<NodeData> {
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46
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47 @Override
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48 public CodeTypeElement create(ProcessorContext context, NodeData node) {
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49 List<CodeTypeElement> enclosedTypes = new ArrayList<>();
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50 for (NodeData childNode : node.getEnclosingNodes()) {
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51 CodeTypeElement type = create(context, childNode);
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52 if (type != null) {
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53 enclosedTypes.add(type);
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54 }
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55 }
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56 List<CodeTypeElement> generatedNodes = generateNodes(context, node);
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57
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58 if (!generatedNodes.isEmpty() || !enclosedTypes.isEmpty()) {
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59 CodeTypeElement type;
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60 if (generatedNodes.isEmpty()) {
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61 type = createContainer(node);
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62 } else {
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63 type = wrapGeneratedNodes(context, node, generatedNodes);
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64 }
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65
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66 for (CodeTypeElement enclosedFactory : enclosedTypes) {
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67 type.add(makeInnerClass(enclosedFactory));
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68 }
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69
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70 if (node.getDeclaringNode() == null && enclosedTypes.size() > 0) {
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71 ExecutableElement getFactories = createGetFactories(context, node);
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72 if (getFactories != null) {
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73 type.add(getFactories);
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74 }
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75 }
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76
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77 return type;
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78 } else {
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79 return null;
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80 }
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81 }
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82
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83 private static CodeTypeElement makeInnerClass(CodeTypeElement type) {
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84 Set<Modifier> modifiers = type.getModifiers();
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85 modifiers.add(Modifier.STATIC);
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86 return type;
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87 }
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88
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89 private static CodeTypeElement wrapGeneratedNodes(ProcessorContext context, NodeData node, List<CodeTypeElement> generatedNodes) {
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90 if (node.isGenerateFactory()) {
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91 // wrap all types into a generated factory
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92 CodeTypeElement factoryElement = new NodeFactoryFactory(context, node, generatedNodes.get(0)).create();
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93 for (CodeTypeElement generatedNode : generatedNodes) {
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94 factoryElement.add(makeInnerClass(generatedNode));
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95 }
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96 return factoryElement;
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97 } else {
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98 // wrap all types into the first node
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99 CodeTypeElement first = generatedNodes.get(0);
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100 CodeTypeElement second = first;
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101 if (generatedNodes.size() > 1) {
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102 second = generatedNodes.get(1);
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103 for (CodeTypeElement generatedNode : generatedNodes) {
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104 if (first != generatedNode) {
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105 first.add(makeInnerClass(generatedNode));
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106 }
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107 }
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108 }
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109 new NodeFactoryFactory(context, node, second).createFactoryMethods(first);
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110 ElementUtils.setVisibility(first.getModifiers(), ElementUtils.getVisibility(node.getTemplateType().getModifiers()));
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111
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112 return first;
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113 }
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114 }
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115
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116 private static CodeTypeElement createContainer(NodeData node) {
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117 CodeTypeElement container;
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118 Modifier visibility = ElementUtils.getVisibility(node.getTemplateType().getModifiers());
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119 String containerName = NodeFactoryFactory.factoryClassName(node);
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120 container = GeneratorUtils.createClass(node, null, modifiers(), containerName, null);
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121 if (visibility != null) {
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122 container.getModifiers().add(visibility);
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123 }
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124 container.getModifiers().add(Modifier.FINAL);
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125
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126 return container;
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127 }
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128
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129 private static String getAccessorClassName(NodeData node) {
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130 return node.isGenerateFactory() ? NodeFactoryFactory.factoryClassName(node) : NodeGenFactory.nodeTypeName(node);
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131 }
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132
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133 private static List<CodeTypeElement> generateNodes(ProcessorContext context, NodeData node) {
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134 if (!node.needsFactory()) {
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135 return Collections.emptyList();
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136 }
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137 return Arrays.asList(new NodeGenFactory(context, node).create());
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138 }
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139
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140 private static ExecutableElement createGetFactories(ProcessorContext context, NodeData node) {
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141 List<NodeData> factoryList = node.getNodesWithFactories();
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142 if (node.needsFactory() && node.isGenerateFactory()) {
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143 factoryList.add(node);
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144 }
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145
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146 if (factoryList.isEmpty()) {
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147 return null;
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148 }
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149
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150 List<TypeMirror> nodeTypesList = new ArrayList<>();
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151 TypeMirror prev = null;
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152 boolean allSame = true;
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153 for (NodeData child : factoryList) {
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154 nodeTypesList.add(child.getNodeType());
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155 if (prev != null && !ElementUtils.typeEquals(child.getNodeType(), prev)) {
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156 allSame = false;
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157 }
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158 prev = child.getNodeType();
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159 }
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160 TypeMirror commonNodeSuperType = ElementUtils.getCommonSuperType(context, nodeTypesList);
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161
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162 Types types = context.getEnvironment().getTypeUtils();
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163 TypeMirror factoryType = context.getType(NodeFactory.class);
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164 TypeMirror baseType;
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165 if (allSame) {
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166 baseType = ElementUtils.getDeclaredType(ElementUtils.fromTypeMirror(factoryType), commonNodeSuperType);
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167 } else {
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168 baseType = ElementUtils.getDeclaredType(ElementUtils.fromTypeMirror(factoryType), types.getWildcardType(commonNodeSuperType, null));
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169 }
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170 TypeMirror listType = ElementUtils.getDeclaredType(ElementUtils.fromTypeMirror(context.getType(List.class)), baseType);
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171
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172 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC, STATIC), listType, "getFactories");
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173
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174 CodeTreeBuilder builder = method.createBuilder();
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175 builder.startReturn();
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176
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177 if (factoryList.size() > 1) {
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178 builder.startStaticCall(context.getType(Arrays.class), "asList");
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179 } else {
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180 builder.startStaticCall(context.getType(Collections.class), "singletonList");
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181 }
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182
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183 for (NodeData child : factoryList) {
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184 builder.startGroup();
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185 NodeData childNode = child;
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186 List<NodeData> factories = new ArrayList<>();
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187 while (childNode.getDeclaringNode() != null) {
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188 factories.add(childNode);
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189 childNode = childNode.getDeclaringNode();
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190 }
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191 Collections.reverse(factories);
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192 for (NodeData nodeData : factories) {
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193
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194 builder.string(getAccessorClassName(nodeData)).string(".");
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195 }
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196 builder.string("getInstance()");
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197 builder.end();
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198 }
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199 builder.end();
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200 builder.end();
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201
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202 return method;
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203 }
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204
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205 }