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annotate truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/GeneratorUtils.java @ 21951:9c8c0937da41

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Moving all sources into truffle subdirectory
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 17 Jun 2015 10:58:08 +0200
parents graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/GeneratorUtils.java@b1530a6cce8c
children dc83cc1f94f2
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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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Christian Humer <christian.humer@gmail.com>
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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 static com.oracle.truffle.dsl.processor.java.ElementUtils.*;
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26 import static javax.lang.model.element.Modifier.*;
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27
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28 import java.util.*;
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29
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30 import javax.lang.model.element.*;
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31 import javax.lang.model.type.*;
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32 import javax.lang.model.util.*;
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33
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34 import com.oracle.truffle.api.*;
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35 import com.oracle.truffle.api.dsl.*;
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36 import com.oracle.truffle.api.dsl.internal.DSLOptions.TypeBoxingOptimization;
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37 import com.oracle.truffle.dsl.processor.*;
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38 import com.oracle.truffle.dsl.processor.java.*;
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39 import com.oracle.truffle.dsl.processor.java.model.*;
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40 import com.oracle.truffle.dsl.processor.model.*;
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41
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42 public class GeneratorUtils {
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43
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44 public static CodeTree createTransferToInterpreterAndInvalidate() {
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45 ProcessorContext context = ProcessorContext.getInstance();
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46 CodeTreeBuilder builder = CodeTreeBuilder.createBuilder();
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47 builder.startStatement().startStaticCall(context.getType(CompilerDirectives.class), "transferToInterpreterAndInvalidate").end().end();
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48 return builder.build();
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49 }
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50
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51 public static CodeExecutableElement createConstructorUsingFields(Set<Modifier> modifiers, CodeTypeElement clazz) {
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52 TypeElement superClass = fromTypeMirror(clazz.getSuperclass());
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53 ExecutableElement constructor = findConstructor(superClass);
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54 return createConstructorUsingFields(modifiers, clazz, constructor);
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55 }
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56
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57 public static CodeExecutableElement createConstructorUsingFields(Set<Modifier> modifiers, CodeTypeElement clazz, ExecutableElement constructor) {
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58 CodeExecutableElement method = new CodeExecutableElement(modifiers, null, clazz.getSimpleName().toString());
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59 CodeTreeBuilder builder = method.createBuilder();
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60 if (constructor != null && constructor.getParameters().size() > 0) {
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61 builder.startStatement();
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62 builder.startSuperCall();
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63 for (VariableElement parameter : constructor.getParameters()) {
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64 method.addParameter(new CodeVariableElement(parameter.asType(), parameter.getSimpleName().toString()));
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65 builder.string(parameter.getSimpleName().toString());
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66 }
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67 builder.end(); // super
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68 builder.end(); // statement
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69 }
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70
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71 for (VariableElement field : clazz.getFields()) {
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72 if (field.getModifiers().contains(STATIC)) {
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73 continue;
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74 }
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75 String fieldName = field.getSimpleName().toString();
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76 method.addParameter(new CodeVariableElement(field.asType(), fieldName));
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77 builder.startStatement();
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78 builder.string("this.");
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79 builder.string(fieldName);
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80 builder.string(" = ");
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81 builder.string(fieldName);
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82 builder.end(); // statement
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83 }
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84
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85 return method;
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86 }
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87
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88 public static boolean isTypeBoxingOptimized(TypeBoxingOptimization boxing, TypeMirror type) {
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89 switch (boxing) {
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90 case NONE:
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91 return false;
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92 case ALWAYS:
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93 return !ElementUtils.isObject(type) && !ElementUtils.isVoid(type);
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94 case PRIMITIVE:
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95 return ElementUtils.isPrimitive(type);
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96 default:
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97 throw new AssertionError();
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98 }
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99 }
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100
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101 private static ExecutableElement findConstructor(TypeElement clazz) {
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102 List<ExecutableElement> constructors = ElementFilter.constructorsIn(clazz.getEnclosedElements());
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103 if (constructors.isEmpty()) {
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104 return null;
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105 } else {
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106 return constructors.get(0);
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107 }
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108 }
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109
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110 public static CodeExecutableElement createSuperConstructor(ProcessorContext context, TypeElement type, ExecutableElement element) {
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111 if (element.getModifiers().contains(Modifier.PRIVATE)) {
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112 return null;
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113 }
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114 CodeExecutableElement executable = CodeExecutableElement.clone(context.getEnvironment(), element);
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115 executable.setReturnType(null);
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116 executable.setSimpleName(CodeNames.of(type.getSimpleName().toString()));
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117 CodeTreeBuilder b = executable.createBuilder();
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118 b.startStatement();
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119 b.startSuperCall();
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120 for (VariableElement v : element.getParameters()) {
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121 b.string(v.getSimpleName().toString());
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122 }
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123 b.end();
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124 b.end();
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125
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126 return executable;
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127 }
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128
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129 public static CodeTypeElement createClass(Template sourceModel, TemplateMethod sourceMethod, Set<Modifier> modifiers, String simpleName, TypeMirror superType) {
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130 TypeElement templateType = sourceModel.getTemplateType();
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131
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132 ProcessorContext context = ProcessorContext.getInstance();
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133
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134 PackageElement pack = context.getEnvironment().getElementUtils().getPackageOf(templateType);
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135 CodeTypeElement clazz = new CodeTypeElement(modifiers, ElementKind.CLASS, pack, simpleName);
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136 TypeMirror resolvedSuperType = superType;
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137 if (resolvedSuperType == null) {
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138 resolvedSuperType = context.getType(Object.class);
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139 }
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140 clazz.setSuperClass(resolvedSuperType);
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141
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142 CodeAnnotationMirror generatedByAnnotation = new CodeAnnotationMirror((DeclaredType) context.getType(GeneratedBy.class));
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143 generatedByAnnotation.setElementValue(generatedByAnnotation.findExecutableElement("value"), new CodeAnnotationValue(templateType.asType()));
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144 if (sourceMethod != null && sourceMethod.getMethod() != null) {
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145 generatedByAnnotation.setElementValue(generatedByAnnotation.findExecutableElement("methodName"), new CodeAnnotationValue(sourceMethod.createReferenceName()));
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146 }
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147
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148 clazz.addAnnotationMirror(generatedByAnnotation);
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149 return clazz;
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150 }
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151
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152 public static List<ExecutableElement> findUserConstructors(TypeMirror nodeType) {
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153 List<ExecutableElement> constructors = new ArrayList<>();
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154 for (ExecutableElement constructor : ElementFilter.constructorsIn(ElementUtils.fromTypeMirror(nodeType).getEnclosedElements())) {
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155 if (constructor.getModifiers().contains(PRIVATE)) {
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156 continue;
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157 }
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158 if (isCopyConstructor(constructor)) {
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159 continue;
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160 }
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161 constructors.add(constructor);
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162 }
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163
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164 if (constructors.isEmpty()) {
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165 constructors.add(new CodeExecutableElement(null, ElementUtils.getSimpleName(nodeType)));
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166 }
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167
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168 return constructors;
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169 }
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170
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171 public static boolean isCopyConstructor(ExecutableElement element) {
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172 if (element.getParameters().size() != 1) {
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173 return false;
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174 }
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175 VariableElement var = element.getParameters().get(0);
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176 TypeElement enclosingType = ElementUtils.findNearestEnclosingType(var);
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177 if (ElementUtils.typeEquals(var.asType(), enclosingType.asType())) {
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178 return true;
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179 }
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180 List<TypeElement> types = ElementUtils.getDirectSuperTypes(enclosingType);
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181 for (TypeElement type : types) {
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182 if (!(type instanceof CodeTypeElement)) {
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183 // no copy constructors which are not generated types
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184 return false;
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185 }
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186
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187 if (ElementUtils.typeEquals(var.asType(), type.asType())) {
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188 return true;
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189 }
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190 }
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191 return false;
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192 }
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193
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194 }