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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/parser/TypeSystemParser.java @ 16759:23415229349b

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Truffle-DSL: new package structure.
author Christian Humer <christian.humer@gmail.com>
date Mon, 11 Aug 2014 15:57:14 +0200
parents graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeSystemParser.java@bd28da642eea
children e6d15134ca86
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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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24
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25 import static com.oracle.truffle.dsl.processor.java.ElementUtils.*;
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27 import java.lang.annotation.*;
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28 import java.util.*;
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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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34 import com.oracle.truffle.api.dsl.*;
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35 import com.oracle.truffle.dsl.processor.generator.*;
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36 import com.oracle.truffle.dsl.processor.java.*;
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37 import com.oracle.truffle.dsl.processor.model.*;
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38
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39 public class TypeSystemParser extends AbstractParser<TypeSystemData> {
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40
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41 public static final List<Class<? extends Annotation>> ANNOTATIONS = Arrays.asList(TypeSystem.class, ExpectError.class);
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43 @Override
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44 public Class<? extends Annotation> getAnnotationType() {
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45 return TypeSystem.class;
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46 }
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47
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48 @Override
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49 protected TypeSystemData parse(Element element, AnnotationMirror mirror) {
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50 TypeElement templateType = (TypeElement) element;
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51 AnnotationMirror templateTypeAnnotation = mirror;
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52 TypeSystemData typeSystem = new TypeSystemData(context, templateType, templateTypeAnnotation);
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54 // annotation type on class path!?
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55 TypeElement annotationTypeElement = processingEnv.getElementUtils().getTypeElement(getAnnotationType().getCanonicalName());
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56 if (annotationTypeElement == null) {
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57 typeSystem.addError("Required class %s is not on the classpath.", getAnnotationType().getName());
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58 }
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59 if (templateType.getModifiers().contains(Modifier.PRIVATE)) {
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60 typeSystem.addError("A @%s must have at least package protected visibility.", getAnnotationType().getName());
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61 }
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63 if (templateType.getModifiers().contains(Modifier.FINAL)) {
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64 typeSystem.addError("The @%s must not be final.", getAnnotationType().getName());
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65 }
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66 if (typeSystem.hasErrors()) {
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67 return typeSystem;
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68 }
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70 typeSystem.setTypes(parseTypes(typeSystem));
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71 if (typeSystem.hasErrors()) {
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72 return typeSystem;
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73 }
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75 TypeMirror genericType = context.getType(Object.class);
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76 TypeData voidType = new TypeData(typeSystem, typeSystem.getTypes().size(), null, context.getType(void.class), context.getType(Void.class));
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78 typeSystem.setGenericType(genericType);
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79 typeSystem.setVoidType(voidType);
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81 verifyExclusiveMethodAnnotation(typeSystem, TypeCast.class, TypeCheck.class);
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83 List<Element> elements = new ArrayList<>(context.getEnvironment().getElementUtils().getAllMembers(templateType));
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84 List<ImplicitCastData> implicitCasts = new ImplicitCastParser(context, typeSystem).parse(elements);
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85 List<TypeCastData> casts = new TypeCastParser(context, typeSystem).parse(elements);
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86 List<TypeCheckData> checks = new TypeCheckParser(context, typeSystem).parse(elements);
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87
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88 if (casts == null || checks == null || implicitCasts == null) {
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89 return typeSystem;
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90 }
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92 typeSystem.setImplicitCasts(implicitCasts);
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93 typeSystem.setCasts(casts);
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94 typeSystem.setChecks(checks);
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96 if (typeSystem.hasErrors()) {
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97 return typeSystem;
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98 }
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100 for (TypeCheckData check : checks) {
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101 check.getCheckedType().addTypeCheck(check);
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102 }
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104 for (TypeCastData cast : casts) {
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105 cast.getTargetType().addTypeCast(cast);
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106 }
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107
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108 verifyGenericTypeChecksAndCasts(typeSystem);
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109 verifyMethodSignatures(typeSystem);
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110 verifyNamesUnique(typeSystem);
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111
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112 return typeSystem;
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113 }
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114
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115 private void verifyExclusiveMethodAnnotation(Template template, Class<?>... annotationTypes) {
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116 List<ExecutableElement> methods = ElementFilter.methodsIn(template.getTemplateType().getEnclosedElements());
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117 for (ExecutableElement method : methods) {
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118 List<AnnotationMirror> foundAnnotations = new ArrayList<>();
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119 for (int i = 0; i < annotationTypes.length; i++) {
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120 Class<?> annotationType = annotationTypes[i];
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121 AnnotationMirror mirror = ElementUtils.findAnnotationMirror(context.getEnvironment(), method, annotationType);
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122 if (mirror != null) {
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123 foundAnnotations.add(mirror);
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124 }
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125 }
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126 if (foundAnnotations.size() > 1) {
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127 List<String> annotationNames = new ArrayList<>();
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128 for (AnnotationMirror mirror : foundAnnotations) {
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129 annotationNames.add("@" + ElementUtils.getSimpleName(mirror.getAnnotationType()));
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130 }
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131
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132 template.addError("Non exclusive usage of annotations %s.", annotationNames);
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133 }
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134 }
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135 }
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136
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137 private static void verifyGenericTypeChecksAndCasts(TypeSystemData typeSystem) {
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138 for (TypeData type : typeSystem.getTypes()) {
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139 if (!type.getTypeChecks().isEmpty()) {
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140 boolean hasGeneric = false;
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141 for (TypeCheckData typeCheck : type.getTypeChecks()) {
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142 if (typeCheck.isGeneric()) {
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143 hasGeneric = true;
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144 break;
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145 }
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146 }
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147 if (!hasGeneric) {
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148 type.addError("No generic but specific @%s method %s for type %s specified. " + "Specify a generic @%s method with parameter type %s to resolve this.",
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149 TypeCheck.class.getSimpleName(), TypeSystemCodeGenerator.isTypeMethodName(type), ElementUtils.getSimpleName(type.getBoxedType()), TypeCheck.class.getSimpleName(),
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150 Object.class.getSimpleName());
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151 }
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152 }
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153 if (!type.getTypeCasts().isEmpty()) {
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154 boolean hasGeneric = false;
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155 for (TypeCastData typeCast : type.getTypeCasts()) {
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156 if (typeCast.isGeneric()) {
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157 hasGeneric = true;
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158 break;
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159 }
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160 }
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161 if (!hasGeneric) {
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162 type.addError("No generic but specific @%s method %s for type %s specified. " + "Specify a generic @%s method with parameter type %s to resolve this.",
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163 TypeCast.class.getSimpleName(), TypeSystemCodeGenerator.asTypeMethodName(type), ElementUtils.getSimpleName(type.getBoxedType()), TypeCast.class.getSimpleName(),
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164 Object.class.getSimpleName());
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165 }
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166 }
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167 }
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168 }
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169
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170 private List<TypeData> parseTypes(TypeSystemData typeSystem) {
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171 List<TypeData> types = new ArrayList<>();
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172 List<TypeMirror> typeMirrors = ElementUtils.getAnnotationValueList(TypeMirror.class, typeSystem.getTemplateTypeAnnotation(), "value");
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173 if (typeMirrors.isEmpty()) {
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174 typeSystem.addError("At least one type must be defined.");
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175 return types;
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176 }
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177
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178 final AnnotationValue annotationValue = ElementUtils.getAnnotationValue(typeSystem.getTemplateTypeAnnotation(), "value");
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179 final TypeMirror objectType = context.getType(Object.class);
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180
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181 int index = 0;
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182 for (TypeMirror primitiveType : typeMirrors) {
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183 TypeMirror boxedType = ElementUtils.boxType(context, primitiveType);
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184 TypeData typeData = new TypeData(typeSystem, index, annotationValue, primitiveType, boxedType);
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185
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186 if (isPrimitiveWrapper(primitiveType)) {
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187 typeData.addError("Types must not contain primitive wrapper types.");
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188 }
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189
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190 if (ElementUtils.typeEquals(boxedType, objectType)) {
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191 typeData.addError("Types must not contain the generic type java.lang.Object.");
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192 }
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193
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194 types.add(typeData);
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195 index++;
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196 }
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197
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198 verifyTypeOrder(types);
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199
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200 types.add(new TypeData(typeSystem, index, annotationValue, objectType, objectType));
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201
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202 return types;
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203 }
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204
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205 private static void verifyTypeOrder(List<TypeData> types) {
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206 Map<String, List<String>> invalidTypes = new HashMap<>();
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207
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208 for (int i = types.size() - 1; i >= 0; i--) {
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209 TypeData typeData = types.get(i);
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210 TypeMirror type = typeData.getBoxedType();
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211 if (invalidTypes.containsKey(ElementUtils.getQualifiedName(type))) {
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212 typeData.addError("Invalid type order. The type(s) %s are inherited from a earlier defined type %s.", invalidTypes.get(ElementUtils.getQualifiedName(type)), ElementUtils.getQualifiedName(type));
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213 }
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214 List<String> nextInvalidTypes = ElementUtils.getQualifiedSuperTypeNames(ElementUtils.fromTypeMirror(type));
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215 nextInvalidTypes.add(getQualifiedName(type));
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216
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217 for (String qualifiedName : nextInvalidTypes) {
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218 List<String> inheritedTypes = invalidTypes.get(qualifiedName);
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219 if (inheritedTypes == null) {
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220 inheritedTypes = new ArrayList<>();
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221 invalidTypes.put(qualifiedName, inheritedTypes);
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222 }
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223 inheritedTypes.add(ElementUtils.getQualifiedName(typeData.getBoxedType()));
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224 }
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225 }
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226 }
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227
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228 private boolean isPrimitiveWrapper(TypeMirror type) {
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229 Types types = context.getEnvironment().getTypeUtils();
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230 for (TypeKind kind : TypeKind.values()) {
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231 if (!kind.isPrimitive()) {
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232 continue;
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233 }
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234 if (ElementUtils.typeEquals(type, types.boxedClass(types.getPrimitiveType(kind)).asType())) {
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235 return true;
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236 }
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237 }
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238 return false;
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239 }
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240
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241 private void verifyMethodSignatures(TypeSystemData typeSystem) {
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242 Set<String> generatedIsMethodNames = new HashSet<>();
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243 Set<String> generatedAsMethodNames = new HashSet<>();
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244 Set<String> generatedExpectMethodNames = new HashSet<>();
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245
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246 for (TypeData typeData : typeSystem.getTypes()) {
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247 generatedIsMethodNames.add(TypeSystemCodeGenerator.isTypeMethodName(typeData));
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248 generatedAsMethodNames.add(TypeSystemCodeGenerator.asTypeMethodName(typeData));
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249 generatedExpectMethodNames.add(TypeSystemCodeGenerator.expectTypeMethodName(typeData));
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250 }
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251
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252 List<ExecutableElement> methods = ElementFilter.methodsIn(typeSystem.getTemplateType().getEnclosedElements());
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253 for (ExecutableElement method : methods) {
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254 if (method.getModifiers().contains(Modifier.PRIVATE)) {
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255 // will not conflict overridden methods
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256 continue;
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257 } else if (method.getParameters().size() != 1) {
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258 continue;
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259 }
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260 String methodName = method.getSimpleName().toString();
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261 if (generatedIsMethodNames.contains(methodName)) {
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262 verifyIsMethod(typeSystem, method);
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263 } else if (generatedAsMethodNames.contains(methodName)) {
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264 verifyAsMethod(typeSystem, method);
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265 } else if (generatedExpectMethodNames.contains(methodName)) {
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266 verifyExpectMethod(typeSystem);
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267 }
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268 }
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269 }
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270
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271 private boolean verifyIsMethod(TypeSystemData typeSystem, ExecutableElement method) {
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272 AnnotationMirror mirror = ElementUtils.findAnnotationMirror(processingEnv, method, TypeCheck.class);
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273 if (mirror == null) {
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274 typeSystem.addError("Method starting with the pattern is${typeName} must be annotated with @%s.", TypeCheck.class.getSimpleName());
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275 return false;
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276 }
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277 return true;
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278 }
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279
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280 private boolean verifyAsMethod(TypeSystemData typeSystem, ExecutableElement method) {
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281 AnnotationMirror mirror = ElementUtils.findAnnotationMirror(processingEnv, method, TypeCast.class);
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282 if (mirror == null) {
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283 typeSystem.addError("Method starting with the pattern as${typeName} must be annotated with @%s.", TypeCast.class.getSimpleName());
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284 return false;
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285 }
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286 return true;
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287 }
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288
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289 private static boolean verifyExpectMethod(TypeSystemData typeSystem) {
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290 typeSystem.addError("Method starting with the pattern expect${typeName} must not be declared manually.");
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291 return false;
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292 }
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293
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294 private static void verifyNamesUnique(TypeSystemData typeSystem) {
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295 List<TypeData> types = typeSystem.getTypes();
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296 for (int i = 0; i < types.size(); i++) {
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297 for (int j = i + 1; j < types.size(); j++) {
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298 String name1 = ElementUtils.getSimpleName(types.get(i).getBoxedType());
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299 String name2 = ElementUtils.getSimpleName(types.get(j).getBoxedType());
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300 if (name1.equalsIgnoreCase(name2)) {
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301 typeSystem.addError("Two types result in the same name: %s, %s.", name1, name2);
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302 }
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303 }
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304 }
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305 }
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306 }