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annotate truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/parser/TypeSystemParser.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/parser/TypeSystemParser.java@f5b49d881909
children dc83cc1f94f2
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1 /*
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2 * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.dsl.processor.parser;
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25 import java.lang.annotation.*;
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26 import java.util.*;
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28 import javax.lang.model.element.*;
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29 import javax.lang.model.type.*;
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30 import javax.lang.model.util.*;
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31
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32 import com.oracle.truffle.api.dsl.*;
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33 import com.oracle.truffle.api.dsl.internal.*;
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34 import com.oracle.truffle.dsl.processor.java.*;
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35 import com.oracle.truffle.dsl.processor.model.*;
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36
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37 @DSLOptions
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38 public class TypeSystemParser extends AbstractParser<TypeSystemData> {
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39
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40 public static final List<Class<TypeSystem>> ANNOTATIONS = Arrays.asList(TypeSystem.class);
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41
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42 @Override
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43 public Class<? extends Annotation> getAnnotationType() {
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44 return TypeSystem.class;
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45 }
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46
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47 @Override
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48 protected TypeSystemData parse(Element element, AnnotationMirror mirror) {
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49 TypeElement templateType = (TypeElement) element;
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50 AnnotationMirror templateTypeAnnotation = mirror;
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51 DSLOptions options = element.getAnnotation(DSLOptions.class);
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52 if (options == null) {
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53 options = TypeSystemParser.class.getAnnotation(DSLOptions.class);
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54 }
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55 assert options != null;
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56
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57 TypeSystemData typeSystem = new TypeSystemData(context, templateType, templateTypeAnnotation, options, false);
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58
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59 // annotation type on class path!?
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60 TypeElement annotationTypeElement = processingEnv.getElementUtils().getTypeElement(getAnnotationType().getCanonicalName());
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61 if (annotationTypeElement == null) {
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62 typeSystem.addError("Required class %s is not on the classpath.", getAnnotationType().getName());
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63 }
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64 if (templateType.getModifiers().contains(Modifier.PRIVATE)) {
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65 typeSystem.addError("A @%s must have at least package protected visibility.", getAnnotationType().getName());
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66 }
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67
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68 if (templateType.getModifiers().contains(Modifier.FINAL)) {
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69 typeSystem.addError("The @%s must not be final.", getAnnotationType().getName());
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70 }
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71 if (typeSystem.hasErrors()) {
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72 return typeSystem;
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73 }
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74
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75 if (typeSystem.hasErrors()) {
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76 return typeSystem;
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77 }
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78
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79 verifyExclusiveMethodAnnotation(typeSystem, TypeCast.class, TypeCheck.class);
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81 List<Element> elements = new ArrayList<>(context.getEnvironment().getElementUtils().getAllMembers(templateType));
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82 List<ImplicitCastData> implicitCasts = new ImplicitCastParser(context, typeSystem).parse(elements);
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83 List<TypeCastData> casts = new TypeCastParser(context, typeSystem).parse(elements);
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84 List<TypeCheckData> checks = new TypeCheckParser(context, typeSystem).parse(elements);
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85
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86 if (casts == null || checks == null || implicitCasts == null) {
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87 return typeSystem;
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88 }
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89
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90 List<TypeMirror> legacyTypes = ElementUtils.getAnnotationValueList(TypeMirror.class, typeSystem.getTemplateTypeAnnotation(), "value");
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91 for (int i = 0; i < legacyTypes.size(); i++) {
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92 legacyTypes.set(i, ElementUtils.fillInGenericWildcards(legacyTypes.get(i)));
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93 }
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94
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95 typeSystem.getLegacyTypes().addAll(legacyTypes);
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96 verifyTypes(typeSystem);
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97 typeSystem.getLegacyTypes().add(context.getType(Object.class));
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98 typeSystem.getLegacyTypes().add(context.getType(void.class));
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99 verifyNamesUnique(typeSystem);
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100
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101 typeSystem.getImplicitCasts().addAll(implicitCasts);
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102 typeSystem.getCasts().addAll(casts);
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103 typeSystem.getChecks().addAll(checks);
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105 if (typeSystem.hasErrors()) {
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106 return typeSystem;
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107 }
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108 return typeSystem;
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109 }
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110
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111 private void verifyExclusiveMethodAnnotation(Template template, Class<?>... annotationTypes) {
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112 List<ExecutableElement> methods = ElementFilter.methodsIn(template.getTemplateType().getEnclosedElements());
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113 for (ExecutableElement method : methods) {
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114 List<AnnotationMirror> foundAnnotations = new ArrayList<>();
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115 for (int i = 0; i < annotationTypes.length; i++) {
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116 Class<?> annotationType = annotationTypes[i];
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117 AnnotationMirror mirror = ElementUtils.findAnnotationMirror(context.getEnvironment(), method, annotationType);
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118 if (mirror != null) {
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119 foundAnnotations.add(mirror);
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120 }
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121 }
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122 if (foundAnnotations.size() > 1) {
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123 List<String> annotationNames = new ArrayList<>();
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124 for (AnnotationMirror mirror : foundAnnotations) {
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125 annotationNames.add("@" + ElementUtils.getSimpleName(mirror.getAnnotationType()));
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126 }
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127
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128 template.addError("Non exclusive usage of annotations %s.", annotationNames);
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129 }
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130 }
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131 }
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132
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133 private void verifyTypes(TypeSystemData typeSystem) {
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134 for (TypeMirror type : typeSystem.getLegacyTypes()) {
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135 if (isPrimitiveWrapper(type)) {
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136 typeSystem.addError("Types must not contain primitive wrapper types.");
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137 }
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138
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139 if (ElementUtils.typeEquals(type, context.getType(Object.class))) {
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140 typeSystem.addError("Types must not contain the generic type java.lang.Object.");
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141 }
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142 }
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143
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144 verifyTypeOrder(typeSystem);
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145 }
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146
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147 private static void verifyTypeOrder(TypeSystemData typeSystem) {
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148 Map<String, List<String>> invalidTypes = new HashMap<>();
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149
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150 for (int i = typeSystem.getLegacyTypes().size() - 1; i >= 0; i--) {
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151 TypeMirror typeData = typeSystem.getLegacyTypes().get(i);
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152 TypeMirror type = typeSystem.boxType(typeData);
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153 if (invalidTypes.containsKey(ElementUtils.getQualifiedName(type))) {
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154 typeSystem.addError("Invalid type order. The type(s) %s are inherited from a earlier defined type %s.", invalidTypes.get(ElementUtils.getQualifiedName(type)),
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155 ElementUtils.getQualifiedName(type));
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156 }
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157 TypeElement element = ElementUtils.fromTypeMirror(type);
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158 List<String> nextInvalidTypes = new ArrayList<>();
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159 if (element != null) {
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160 nextInvalidTypes.addAll(ElementUtils.getQualifiedSuperTypeNames(element));
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161 }
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162 nextInvalidTypes.add(ElementUtils.getQualifiedName(type));
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163
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164 for (String qualifiedName : nextInvalidTypes) {
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165 List<String> inheritedTypes = invalidTypes.get(qualifiedName);
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166 if (inheritedTypes == null) {
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167 inheritedTypes = new ArrayList<>();
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168 invalidTypes.put(qualifiedName, inheritedTypes);
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169 }
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170 inheritedTypes.add(ElementUtils.getQualifiedName(typeSystem.boxType(typeData)));
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171 }
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172 }
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173 }
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174
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175 private boolean isPrimitiveWrapper(TypeMirror type) {
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176 Types types = context.getEnvironment().getTypeUtils();
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177 for (TypeKind kind : TypeKind.values()) {
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178 if (!kind.isPrimitive()) {
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179 continue;
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180 }
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181 if (ElementUtils.typeEquals(type, types.boxedClass(types.getPrimitiveType(kind)).asType())) {
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182 return true;
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183 }
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184 }
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185 return false;
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186 }
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187
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188 private static void verifyNamesUnique(TypeSystemData typeSystem) {
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189 Set<String> usedNames = new HashSet<>();
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190 for (TypeMirror type : typeSystem.getLegacyTypes()) {
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191 String boxedName = ElementUtils.getSimpleName(typeSystem.boxType(type));
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192 String primitiveName = ElementUtils.getSimpleName(type);
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193 if (usedNames.contains(boxedName)) {
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194 typeSystem.addError("Two types result in the same boxed name: %s.", boxedName);
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195 } else if (usedNames.contains(primitiveName)) {
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196 typeSystem.addError("Two types result in the same primitive name: %s.", primitiveName);
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197 }
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198 usedNames.add(boxedName);
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199 usedNames.add(primitiveName);
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200 }
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201 }
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202
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203 }