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annotate truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/GeneratorUtils.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) 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.CompilerDirectives;
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26 import com.oracle.truffle.api.dsl.GeneratedBy;
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27 import com.oracle.truffle.api.dsl.internal.DSLOptions.TypeBoxingOptimization;
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28 import com.oracle.truffle.dsl.processor.ProcessorContext;
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29 import com.oracle.truffle.dsl.processor.java.ElementUtils;
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30 import static com.oracle.truffle.dsl.processor.java.ElementUtils.fromTypeMirror;
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31 import com.oracle.truffle.dsl.processor.java.model.CodeAnnotationMirror;
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32 import com.oracle.truffle.dsl.processor.java.model.CodeAnnotationValue;
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33 import com.oracle.truffle.dsl.processor.java.model.CodeExecutableElement;
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34 import com.oracle.truffle.dsl.processor.java.model.CodeNames;
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35 import com.oracle.truffle.dsl.processor.java.model.CodeTree;
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36 import com.oracle.truffle.dsl.processor.java.model.CodeTreeBuilder;
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37 import com.oracle.truffle.dsl.processor.java.model.CodeTypeElement;
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38 import com.oracle.truffle.dsl.processor.java.model.CodeVariableElement;
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39 import com.oracle.truffle.dsl.processor.model.Template;
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40 import com.oracle.truffle.dsl.processor.model.TemplateMethod;
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41 import java.util.ArrayList;
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42 import java.util.List;
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43 import java.util.Set;
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44 import javax.lang.model.element.ElementKind;
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45 import javax.lang.model.element.ExecutableElement;
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46 import javax.lang.model.element.Modifier;
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47 import static javax.lang.model.element.Modifier.PRIVATE;
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48 import static javax.lang.model.element.Modifier.STATIC;
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49 import javax.lang.model.element.PackageElement;
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50 import javax.lang.model.element.TypeElement;
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51 import javax.lang.model.element.VariableElement;
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52 import javax.lang.model.type.DeclaredType;
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53 import javax.lang.model.type.TypeMirror;
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54 import javax.lang.model.util.ElementFilter;
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55
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56 public class GeneratorUtils {
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57
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58 public static CodeTree createTransferToInterpreterAndInvalidate() {
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59 ProcessorContext context = ProcessorContext.getInstance();
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60 CodeTreeBuilder builder = CodeTreeBuilder.createBuilder();
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61 builder.startStatement().startStaticCall(context.getType(CompilerDirectives.class), "transferToInterpreterAndInvalidate").end().end();
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62 return builder.build();
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63 }
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64
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65 public static CodeExecutableElement createConstructorUsingFields(Set<Modifier> modifiers, CodeTypeElement clazz) {
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66 TypeElement superClass = fromTypeMirror(clazz.getSuperclass());
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67 ExecutableElement constructor = findConstructor(superClass);
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68 return createConstructorUsingFields(modifiers, clazz, constructor);
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69 }
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70
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71 public static CodeExecutableElement createConstructorUsingFields(Set<Modifier> modifiers, CodeTypeElement clazz, ExecutableElement constructor) {
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72 CodeExecutableElement method = new CodeExecutableElement(modifiers, null, clazz.getSimpleName().toString());
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73 CodeTreeBuilder builder = method.createBuilder();
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74 if (constructor != null && constructor.getParameters().size() > 0) {
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75 builder.startStatement();
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76 builder.startSuperCall();
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77 for (VariableElement parameter : constructor.getParameters()) {
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78 method.addParameter(new CodeVariableElement(parameter.asType(), parameter.getSimpleName().toString()));
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79 builder.string(parameter.getSimpleName().toString());
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80 }
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81 builder.end(); // super
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82 builder.end(); // statement
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83 }
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84
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85 for (VariableElement field : clazz.getFields()) {
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86 if (field.getModifiers().contains(STATIC)) {
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87 continue;
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88 }
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89 String fieldName = field.getSimpleName().toString();
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90 method.addParameter(new CodeVariableElement(field.asType(), fieldName));
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91 builder.startStatement();
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92 builder.string("this.");
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93 builder.string(fieldName);
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94 builder.string(" = ");
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95 builder.string(fieldName);
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96 builder.end(); // statement
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97 }
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98
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99 return method;
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100 }
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101
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102 public static boolean isTypeBoxingOptimized(TypeBoxingOptimization boxing, TypeMirror type) {
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103 switch (boxing) {
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104 case NONE:
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105 return false;
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106 case ALWAYS:
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107 return !ElementUtils.isObject(type) && !ElementUtils.isVoid(type);
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108 case PRIMITIVE:
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109 return ElementUtils.isPrimitive(type);
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110 default:
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111 throw new AssertionError();
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112 }
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113 }
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114
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115 private static ExecutableElement findConstructor(TypeElement clazz) {
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116 List<ExecutableElement> constructors = ElementFilter.constructorsIn(clazz.getEnclosedElements());
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117 if (constructors.isEmpty()) {
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118 return null;
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119 } else {
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120 return constructors.get(0);
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121 }
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122 }
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123
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124 public static CodeExecutableElement createSuperConstructor(ProcessorContext context, TypeElement type, ExecutableElement element) {
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125 if (element.getModifiers().contains(Modifier.PRIVATE)) {
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126 return null;
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127 }
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128 CodeExecutableElement executable = CodeExecutableElement.clone(context.getEnvironment(), element);
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129 executable.setReturnType(null);
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130 executable.setSimpleName(CodeNames.of(type.getSimpleName().toString()));
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131 CodeTreeBuilder b = executable.createBuilder();
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132 b.startStatement();
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133 b.startSuperCall();
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134 for (VariableElement v : element.getParameters()) {
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135 b.string(v.getSimpleName().toString());
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136 }
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137 b.end();
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138 b.end();
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139
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140 return executable;
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141 }
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142
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143 public static CodeTypeElement createClass(Template sourceModel, TemplateMethod sourceMethod, Set<Modifier> modifiers, String simpleName, TypeMirror superType) {
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144 TypeElement templateType = sourceModel.getTemplateType();
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145
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146 ProcessorContext context = ProcessorContext.getInstance();
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147
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148 PackageElement pack = context.getEnvironment().getElementUtils().getPackageOf(templateType);
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149 CodeTypeElement clazz = new CodeTypeElement(modifiers, ElementKind.CLASS, pack, simpleName);
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150 TypeMirror resolvedSuperType = superType;
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151 if (resolvedSuperType == null) {
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152 resolvedSuperType = context.getType(Object.class);
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153 }
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154 clazz.setSuperClass(resolvedSuperType);
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155
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156 CodeAnnotationMirror generatedByAnnotation = new CodeAnnotationMirror((DeclaredType) context.getType(GeneratedBy.class));
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157 generatedByAnnotation.setElementValue(generatedByAnnotation.findExecutableElement("value"), new CodeAnnotationValue(templateType.asType()));
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158 if (sourceMethod != null && sourceMethod.getMethod() != null) {
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159 generatedByAnnotation.setElementValue(generatedByAnnotation.findExecutableElement("methodName"), new CodeAnnotationValue(sourceMethod.createReferenceName()));
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160 }
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161
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162 clazz.addAnnotationMirror(generatedByAnnotation);
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163 return clazz;
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164 }
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165
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166 public static List<ExecutableElement> findUserConstructors(TypeMirror nodeType) {
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167 List<ExecutableElement> constructors = new ArrayList<>();
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168 for (ExecutableElement constructor : ElementFilter.constructorsIn(ElementUtils.fromTypeMirror(nodeType).getEnclosedElements())) {
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169 if (constructor.getModifiers().contains(PRIVATE)) {
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170 continue;
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171 }
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172 if (isCopyConstructor(constructor)) {
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173 continue;
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174 }
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175 constructors.add(constructor);
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176 }
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177
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178 if (constructors.isEmpty()) {
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179 constructors.add(new CodeExecutableElement(null, ElementUtils.getSimpleName(nodeType)));
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180 }
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181
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182 return constructors;
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183 }
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184
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185 public static boolean isCopyConstructor(ExecutableElement element) {
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186 if (element.getParameters().size() != 1) {
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187 return false;
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188 }
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189 VariableElement var = element.getParameters().get(0);
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190 TypeElement enclosingType = ElementUtils.findNearestEnclosingType(var);
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191 if (ElementUtils.typeEquals(var.asType(), enclosingType.asType())) {
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192 return true;
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193 }
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194 List<TypeElement> types = ElementUtils.getDirectSuperTypes(enclosingType);
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195 for (TypeElement type : types) {
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196 if (!(type instanceof CodeTypeElement)) {
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197 // no copy constructors which are not generated types
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198 return false;
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199 }
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200
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201 if (ElementUtils.typeEquals(var.asType(), type.asType())) {
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202 return true;
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203 }
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204 }
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205 return false;
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206 }
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207
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208 }