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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/parser/TypeSystemParser.java @ 18783:7d67a33e1bbb

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Truffle-DSL: made type name verification more robust. Added some tests. (GRAAL-468 #resolve)
author Christian Humer <christian.humer@gmail.com>
date Mon, 05 Jan 2015 20:23:22 +0100
parents 3ea386a1036f
children 18c0f02fa4d2
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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 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.api.dsl.internal.*;
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36 import com.oracle.truffle.dsl.processor.generator.*;
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37 import com.oracle.truffle.dsl.processor.java.*;
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38 import com.oracle.truffle.dsl.processor.model.*;
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39
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40 @DSLOptions
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41 public class TypeSystemParser extends AbstractParser<TypeSystemData> {
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43 public static final List<Class<? extends Annotation>> ANNOTATIONS = Arrays.asList(TypeSystem.class, ExpectError.class);
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44
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45 @Override
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46 public Class<? extends Annotation> getAnnotationType() {
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47 return TypeSystem.class;
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48 }
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49
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50 @Override
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51 protected TypeSystemData parse(Element element, AnnotationMirror mirror) {
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52 TypeElement templateType = (TypeElement) element;
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53 AnnotationMirror templateTypeAnnotation = mirror;
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54 DSLOptions options = element.getAnnotation(DSLOptions.class);
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55 if (options == null) {
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56 options = TypeSystemParser.class.getAnnotation(DSLOptions.class);
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57 }
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58 assert options != null;
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59
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60 TypeSystemData typeSystem = new TypeSystemData(context, templateType, templateTypeAnnotation, options);
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61
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62 // annotation type on class path!?
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63 TypeElement annotationTypeElement = processingEnv.getElementUtils().getTypeElement(getAnnotationType().getCanonicalName());
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64 if (annotationTypeElement == null) {
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65 typeSystem.addError("Required class %s is not on the classpath.", getAnnotationType().getName());
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66 }
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67 if (templateType.getModifiers().contains(Modifier.PRIVATE)) {
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68 typeSystem.addError("A @%s must have at least package protected visibility.", getAnnotationType().getName());
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69 }
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71 if (templateType.getModifiers().contains(Modifier.FINAL)) {
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72 typeSystem.addError("The @%s must not be final.", getAnnotationType().getName());
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73 }
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74 if (typeSystem.hasErrors()) {
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75 return typeSystem;
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76 }
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77
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78 List<TypeData> types = parseTypes(typeSystem);
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79
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80 TypeMirror genericType = context.getType(Object.class);
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81 TypeData voidType = new TypeData(typeSystem, types.size(), null, context.getType(void.class), context.getType(Void.class));
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82 types.add(voidType);
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83
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84 typeSystem.setTypes(types);
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85 if (typeSystem.hasErrors()) {
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86 return typeSystem;
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87 }
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88 typeSystem.setGenericType(genericType);
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89 typeSystem.setVoidType(voidType);
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90
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91 TypeData booleanType = typeSystem.findTypeData(context.getType(boolean.class));
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92 if (booleanType == null) {
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93 booleanType = new TypeData(typeSystem, types.size(), null, context.getType(boolean.class), context.getType(Boolean.class));
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94 }
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95 typeSystem.setBooleanType(booleanType);
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96
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97 verifyExclusiveMethodAnnotation(typeSystem, TypeCast.class, TypeCheck.class);
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99 List<Element> elements = new ArrayList<>(context.getEnvironment().getElementUtils().getAllMembers(templateType));
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100 List<ImplicitCastData> implicitCasts = new ImplicitCastParser(context, typeSystem).parse(elements);
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101 List<TypeCastData> casts = new TypeCastParser(context, typeSystem).parse(elements);
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102 List<TypeCheckData> checks = new TypeCheckParser(context, typeSystem).parse(elements);
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103
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104 if (casts == null || checks == null || implicitCasts == null) {
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105 return typeSystem;
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106 }
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107
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108 typeSystem.setImplicitCasts(implicitCasts);
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109 typeSystem.setCasts(casts);
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110 typeSystem.setChecks(checks);
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111
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112 if (typeSystem.hasErrors()) {
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113 return typeSystem;
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114 }
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115
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116 for (TypeCheckData check : checks) {
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117 check.getCheckedType().addTypeCheck(check);
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118 }
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119
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120 for (TypeCastData cast : casts) {
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121 cast.getTargetType().addTypeCast(cast);
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122 }
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123
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124 verifyMethodSignatures(typeSystem);
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125 verifyNamesUnique(typeSystem);
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126
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127 return typeSystem;
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128 }
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129
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130 private void verifyExclusiveMethodAnnotation(Template template, Class<?>... annotationTypes) {
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131 List<ExecutableElement> methods = ElementFilter.methodsIn(template.getTemplateType().getEnclosedElements());
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132 for (ExecutableElement method : methods) {
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133 List<AnnotationMirror> foundAnnotations = new ArrayList<>();
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134 for (int i = 0; i < annotationTypes.length; i++) {
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135 Class<?> annotationType = annotationTypes[i];
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136 AnnotationMirror mirror = ElementUtils.findAnnotationMirror(context.getEnvironment(), method, annotationType);
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137 if (mirror != null) {
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138 foundAnnotations.add(mirror);
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139 }
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140 }
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141 if (foundAnnotations.size() > 1) {
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142 List<String> annotationNames = new ArrayList<>();
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143 for (AnnotationMirror mirror : foundAnnotations) {
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144 annotationNames.add("@" + ElementUtils.getSimpleName(mirror.getAnnotationType()));
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145 }
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146
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147 template.addError("Non exclusive usage of annotations %s.", annotationNames);
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148 }
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149 }
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150 }
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151
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152 private List<TypeData> parseTypes(TypeSystemData typeSystem) {
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153 List<TypeData> types = new ArrayList<>();
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154 List<TypeMirror> typeMirrors = ElementUtils.getAnnotationValueList(TypeMirror.class, typeSystem.getTemplateTypeAnnotation(), "value");
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155 if (typeMirrors.isEmpty()) {
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156 typeSystem.addError("At least one type must be defined.");
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157 return types;
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158 }
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159
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160 final AnnotationValue annotationValue = ElementUtils.getAnnotationValue(typeSystem.getTemplateTypeAnnotation(), "value");
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161 final TypeMirror objectType = context.getType(Object.class);
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162
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163 int index = 0;
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164 for (TypeMirror primitiveType : typeMirrors) {
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165 TypeMirror primitive = ElementUtils.fillInGenericWildcards(primitiveType);
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166
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167 TypeMirror boxedType = ElementUtils.boxType(context, primitive);
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168 TypeData typeData = new TypeData(typeSystem, index, annotationValue, primitive, boxedType);
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169
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170 if (isPrimitiveWrapper(primitive)) {
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171 typeData.addError("Types must not contain primitive wrapper types.");
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172 }
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173
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174 if (ElementUtils.typeEquals(boxedType, objectType)) {
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175 typeData.addError("Types must not contain the generic type java.lang.Object.");
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176 }
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177
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178 types.add(typeData);
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179 index++;
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180 }
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181
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182 verifyTypeOrder(types);
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183
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184 types.add(new TypeData(typeSystem, index, annotationValue, objectType, objectType));
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185 return types;
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186 }
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187
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188 private static void verifyTypeOrder(List<TypeData> types) {
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189 Map<String, List<String>> invalidTypes = new HashMap<>();
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190
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191 for (int i = types.size() - 1; i >= 0; i--) {
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192 TypeData typeData = types.get(i);
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193 TypeMirror type = typeData.getBoxedType();
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194 if (invalidTypes.containsKey(ElementUtils.getQualifiedName(type))) {
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195 typeData.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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196 ElementUtils.getQualifiedName(type));
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197 }
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198 TypeElement element = ElementUtils.fromTypeMirror(type);
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199 List<String> nextInvalidTypes = new ArrayList<>();
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200 if (element != null) {
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201 nextInvalidTypes.addAll(ElementUtils.getQualifiedSuperTypeNames(element));
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202 }
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203 nextInvalidTypes.add(getQualifiedName(type));
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204
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205 for (String qualifiedName : nextInvalidTypes) {
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206 List<String> inheritedTypes = invalidTypes.get(qualifiedName);
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207 if (inheritedTypes == null) {
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208 inheritedTypes = new ArrayList<>();
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209 invalidTypes.put(qualifiedName, inheritedTypes);
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210 }
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211 inheritedTypes.add(ElementUtils.getQualifiedName(typeData.getBoxedType()));
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212 }
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213 }
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214 }
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215
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216 private boolean isPrimitiveWrapper(TypeMirror type) {
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217 Types types = context.getEnvironment().getTypeUtils();
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218 for (TypeKind kind : TypeKind.values()) {
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219 if (!kind.isPrimitive()) {
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220 continue;
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221 }
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222 if (ElementUtils.typeEquals(type, types.boxedClass(types.getPrimitiveType(kind)).asType())) {
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223 return true;
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224 }
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225 }
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226 return false;
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227 }
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228
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229 private void verifyMethodSignatures(TypeSystemData typeSystem) {
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230 Set<String> generatedIsMethodNames = new HashSet<>();
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231 Set<String> generatedAsMethodNames = new HashSet<>();
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232 Set<String> generatedExpectMethodNames = new HashSet<>();
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233
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234 for (TypeData typeData : typeSystem.getTypes()) {
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235 generatedIsMethodNames.add(TypeSystemCodeGenerator.isTypeMethodName(typeData));
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236 generatedAsMethodNames.add(TypeSystemCodeGenerator.asTypeMethodName(typeData));
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237 generatedExpectMethodNames.add(TypeSystemCodeGenerator.expectTypeMethodName(typeData));
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238 }
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239
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240 List<ExecutableElement> methods = ElementFilter.methodsIn(typeSystem.getTemplateType().getEnclosedElements());
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241 for (ExecutableElement method : methods) {
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242 if (method.getModifiers().contains(Modifier.PRIVATE)) {
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243 // will not conflict overridden methods
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244 continue;
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245 } else if (method.getParameters().size() != 1) {
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246 continue;
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247 }
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248 String methodName = method.getSimpleName().toString();
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249 if (generatedIsMethodNames.contains(methodName)) {
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250 verifyIsMethod(typeSystem, method);
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251 } else if (generatedAsMethodNames.contains(methodName)) {
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252 verifyAsMethod(typeSystem, method);
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253 } else if (generatedExpectMethodNames.contains(methodName)) {
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254 verifyExpectMethod(typeSystem);
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255 }
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256 }
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257 }
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258
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259 private boolean verifyIsMethod(TypeSystemData typeSystem, ExecutableElement method) {
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260 AnnotationMirror mirror = ElementUtils.findAnnotationMirror(processingEnv, method, TypeCheck.class);
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261 if (mirror == null) {
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262 typeSystem.addError("Method starting with the pattern is${typeName} must be annotated with @%s.", TypeCheck.class.getSimpleName());
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263 return false;
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264 }
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265 return true;
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266 }
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267
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268 private boolean verifyAsMethod(TypeSystemData typeSystem, ExecutableElement method) {
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269 AnnotationMirror mirror = ElementUtils.findAnnotationMirror(processingEnv, method, TypeCast.class);
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270 if (mirror == null) {
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271 typeSystem.addError("Method starting with the pattern as${typeName} must be annotated with @%s.", TypeCast.class.getSimpleName());
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272 return false;
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273 }
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274 return true;
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275 }
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276
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277 private static boolean verifyExpectMethod(TypeSystemData typeSystem) {
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278 typeSystem.addError("Method starting with the pattern expect${typeName} must not be declared manually.");
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279 return false;
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280 }
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281
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282 private static void verifyNamesUnique(TypeSystemData typeSystem) {
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283 Set<String> usedNames = new HashSet<>();
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284 for (TypeData type : typeSystem.getTypes()) {
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285 String boxedName = ElementUtils.getSimpleName(type.getBoxedType());
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286 String primitiveName = ElementUtils.getSimpleName(type.getPrimitiveType());
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287 if (usedNames.contains(boxedName)) {
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288 typeSystem.addError("Two types result in the same boxed name: %s.", boxedName);
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289 } else if (usedNames.contains(primitiveName)) {
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290 typeSystem.addError("Two types result in the same primitive name: %s.", primitiveName);
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291 }
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292 usedNames.add(boxedName);
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293 usedNames.add(primitiveName);
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294 }
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295 }
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296 }