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annotate graal/com.oracle.truffle.codegen.processor/src/com/oracle/truffle/codegen/processor/typesystem/TypeSystemParser.java @ 7291:a748e4d44694

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Truffle API to specify type-specalized Node classes; annotation processor for automatic code generation of the type-specialized Node classes during the build process
author Christian Humer <christian.humer@gmail.com>
date Fri, 21 Dec 2012 10:44:31 -0800
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children 6343a09b2ec1
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7291
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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.codegen.processor.typesystem;
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24
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25 import static com.oracle.truffle.codegen.processor.Utils.*;
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27 import java.lang.annotation.*;
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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.codegen.*;
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35 import com.oracle.truffle.codegen.processor.*;
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36 import com.oracle.truffle.codegen.processor.operation.*;
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37 import com.oracle.truffle.codegen.processor.template.*;
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38
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39 public class TypeSystemParser extends TemplateParser<TypeSystemData> {
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40
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41 public TypeSystemParser(ProcessorContext c) {
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42 super(c);
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43 }
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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
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55 if (!verifyTemplateType(templateType, templateTypeAnnotation)) {
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56 return null;
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57 }
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58
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59 TypeData[] types = parseTypes(templateType, templateTypeAnnotation);
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60 if (types == null) {
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61 return null;
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62 }
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64 TypeMirror nodeType = Utils.getAnnotationValueType(templateTypeAnnotation, "nodeBaseClass");
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65 TypeMirror genericType = context.getType(Object.class);
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66
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67 TypeData voidType = null;
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68 if (Utils.getAnnotationValueBoolean(templateTypeAnnotation, "hasVoid")) {
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69 voidType = new TypeData(templateType, templateTypeAnnotation, context.getType(void.class), context.getType(Void.class));
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70 }
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72 TypeSystemData typeSystem = new TypeSystemData(templateType, templateTypeAnnotation, types, nodeType, genericType, voidType);
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74 if (!verifyNodeBaseType(typeSystem)) {
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75 return null;
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76 }
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78 if (!verifyExclusiveMethodAnnotation(templateType, TypeCast.class, TypeCheck.class, GuardCheck.class)) {
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79 return null;
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80 }
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82 typeSystem.setExtensionElements(getExtensionParser().parseAll(templateType));
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84 List<TypeCastData> casts = parseMethods(typeSystem, new TypeCastParser(context, typeSystem));
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85 List<TypeCheckData> checks = parseMethods(typeSystem, new TypeCheckParser(context, typeSystem));
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86 List<GuardData> guards = parseMethods(typeSystem, new GuardParser(context, typeSystem, typeSystem));
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87
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88 if (casts == null || checks == null || guards == null) {
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89 return null;
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90 }
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92 for (TypeCheckData check : checks) {
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93 check.getCheckedType().addTypeCheck(check);
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94 }
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96 for (TypeCastData cast : casts) {
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97 cast.getTargetType().addTypeCast(cast);
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98 }
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100 typeSystem.setGuards(guards);
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102 if (!verifyGenericTypeChecksAndCasts(types)) {
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103 return null;
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104 }
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105
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106 if (!verifyMethodSignatures(element, types)) {
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107 return null;
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108 }
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109
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110 if (!verifyNamesUnique(templateType, templateTypeAnnotation, types)) {
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111 return null;
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112 }
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113
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114 return typeSystem;
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115 }
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116
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117 private boolean verifyGenericTypeChecksAndCasts(TypeData[] types) {
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118 boolean valid = true;
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119 for (TypeData type : types) {
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120 if (!type.getTypeChecks().isEmpty()) {
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121 boolean hasGeneric = false;
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122 for (TypeCheckData typeCheck : type.getTypeChecks()) {
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123 if (typeCheck.isGeneric()) {
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124 hasGeneric = true;
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125 break;
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126 }
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127 }
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128 if (!hasGeneric) {
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129 log.error(type.getTypeSystem().getTemplateType(),
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130 "No generic but specific @%s method %s for type %s specified. " +
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131 "Specify a generic @%s method with parameter type %s to resolve this.",
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132 TypeCheck.class.getSimpleName(), TypeSystemCodeGenerator.isTypeMethodName(type), Utils.getSimpleName(type.getBoxedType()),
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133 TypeCheck.class.getSimpleName(), Object.class.getSimpleName());
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134 valid = false;
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135 }
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136 }
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137 if (!type.getTypeCasts().isEmpty()) {
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138 boolean hasGeneric = false;
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139 for (TypeCastData typeCast : type.getTypeCasts()) {
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140 if (typeCast.isGeneric()) {
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141 hasGeneric = true;
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142 break;
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143 }
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144 }
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145 if (!hasGeneric) {
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146 log.error(type.getTypeSystem().getTemplateType(),
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147 "No generic but specific @%s method %s for type %s specified. " +
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148 "Specify a generic @%s method with parameter type %s to resolve this.",
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149 TypeCast.class.getSimpleName(), TypeSystemCodeGenerator.asTypeMethodName(type), Utils.getSimpleName(type.getBoxedType()),
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150 TypeCast.class.getSimpleName(), Object.class.getSimpleName());
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151 valid = false;
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152 }
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153 }
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154 }
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155 return valid;
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156 }
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157
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158 private boolean verifyNodeBaseType(TypeSystemData typeSystem) {
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159 List<TypeData> types = new ArrayList<>(Arrays.asList(typeSystem.getTypes()));
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160 if (typeSystem.getVoidType() != null) {
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161 types.add(typeSystem.getVoidType());
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162 }
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163
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164 TypeMirror[] args = new TypeMirror[]{context.getTruffleTypes().getFrame()};
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165 List<String> missingMethods = new ArrayList<>();
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166 for (TypeData typeData : types) {
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167 String methodName = OperationCodeGenerator.executeMethodName(typeData);
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168 ExecutableElement declared = Utils.getDeclaredMethodRecursive(Utils.fromTypeMirror(typeSystem.getNodeType()), methodName, args);
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169 if (declared == null || declared.getModifiers().contains(Modifier.FINAL)) {
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170 missingMethods.add(String.format("public %s %s(%s)",
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171 Utils.getSimpleName(typeData.getPrimitiveType()), methodName,
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172 Utils.getSimpleName(context.getTruffleTypes().getFrame())));
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173 }
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174 }
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175
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176 if (!missingMethods.isEmpty()) {
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177 log.error(typeSystem.getTemplateType(), typeSystem.getTemplateTypeAnnotation(),
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178 Utils.getAnnotationValue(typeSystem.getTemplateTypeAnnotation(), "nodeBaseClass"),
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179 "The class '%s' does not declare the required non final method(s) %s.",
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180 Utils.getQualifiedName(typeSystem.getNodeType()), missingMethods);
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181 return false;
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182 }
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183
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184 return true;
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185 }
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186
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187 private TypeData[] parseTypes(TypeElement templateType, AnnotationMirror templateTypeAnnotation) {
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188 List<TypeMirror> typeMirrors = Utils.getAnnotationValueList(templateTypeAnnotation, "types");
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189 if (typeMirrors.size() == 0) {
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190 log.error(templateType, templateTypeAnnotation, "At least one type child must be defined.");
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191 return null;
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192 }
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193
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194 final AnnotationValue annotationValue = Utils.getAnnotationValue(templateTypeAnnotation, "types");
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195 final TypeMirror objectType = context.getType(Object.class);
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196
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197 List<TypeData> types = new ArrayList<>();
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198 for (TypeMirror primitiveType : typeMirrors) {
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199
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200 if (isPrimitiveWrapper(primitiveType)) {
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201 log.error(templateType, templateTypeAnnotation, annotationValue,
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202 "Types must not contain primitive wrapper types.");
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203 continue;
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204 }
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205
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206 TypeMirror boxedType = primitiveType;
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207 if (boxedType.getKind().isPrimitive()) {
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208 boxedType = processingEnv.getTypeUtils().boxedClass((PrimitiveType) boxedType).asType();
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209 }
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210
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211 if (Utils.typeEquals(boxedType, objectType)) {
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212 log.error(templateType, templateTypeAnnotation, annotationValue,
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213 "Types must not contain the generic type java.lang.Object.");
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214 continue;
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215 }
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216
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217 types.add(new TypeData(templateType, templateTypeAnnotation, primitiveType, boxedType));
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218 }
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219
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220 verifyTypeOrder(templateType, templateTypeAnnotation, annotationValue, types);
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221
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222 types.add(new TypeData(templateType, templateTypeAnnotation, objectType, objectType));
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223
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224 return types.toArray(new TypeData[types.size()]);
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225 }
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226
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227 private void verifyTypeOrder(TypeElement templateType, AnnotationMirror templateTypeAnnotation, AnnotationValue annotationValue, List<TypeData> types) {
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228 Map<String, List<String>> invalidTypes = new HashMap<>();
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229
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230 for (int i = types.size() - 1; i >= 0; i--) {
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231 TypeData typeData = types.get(i);
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232 TypeMirror type = typeData.getBoxedType();
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233 if (invalidTypes.containsKey(Utils.getQualifiedName(type))) {
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234 log.error(templateType, templateTypeAnnotation, annotationValue,
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235 "Invalid type order. The type(s) %s are inherited from a earlier defined type %s.",
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236 invalidTypes.get(Utils.getQualifiedName(type)), Utils.getQualifiedName(type));
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237 }
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238 List<String> nextInvalidTypes = Utils.getQualifiedSuperTypeNames(Utils.fromTypeMirror(type));
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239 nextInvalidTypes.add(getQualifiedName(type));
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240
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241 for (String qualifiedName : nextInvalidTypes) {
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242 List<String> inheritedTypes = invalidTypes.get(qualifiedName);
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243 if (inheritedTypes == null) {
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244 inheritedTypes = new ArrayList<>();
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245 invalidTypes.put(qualifiedName, inheritedTypes);
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246 }
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247 inheritedTypes.add(Utils.getQualifiedName(typeData.getBoxedType()));
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248 }
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249 }
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250 }
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251
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252 private boolean isPrimitiveWrapper(TypeMirror type) {
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253 Types types = context.getEnvironment().getTypeUtils();
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254 for (TypeKind kind : TypeKind.values()) {
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255 if (!kind.isPrimitive()) {
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256 continue;
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257 }
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258 if (Utils.typeEquals(type, types.boxedClass(types.getPrimitiveType(kind)).asType())) {
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259 return true;
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260 }
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261 }
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262 return false;
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263 }
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264
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265
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266 private boolean verifyMethodSignatures(Element element, TypeData[] types) {
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267 Set<String> generatedIsMethodNames = new HashSet<>();
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268 Set<String> generatedAsMethodNames = new HashSet<>();
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269 Set<String> generatedExpectMethodNames = new HashSet<>();
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270
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271 for (TypeData typeData : types) {
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272 generatedIsMethodNames.add(TypeSystemCodeGenerator.isTypeMethodName(typeData));
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273 generatedAsMethodNames.add(TypeSystemCodeGenerator.asTypeMethodName(typeData));
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274 generatedExpectMethodNames.add(TypeSystemCodeGenerator.expectTypeMethodName(typeData));
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275 }
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276
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277 boolean valid = true;
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278 List<ExecutableElement> methods = ElementFilter.methodsIn(element.getEnclosedElements());
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279 for (ExecutableElement method : methods) {
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280 if (method.getModifiers().contains(Modifier.PRIVATE)) {
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281 // will not conflict overridden methods
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282 continue;
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283 } else if (method.getParameters().size() != 1) {
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284 continue;
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285 }
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286 String methodName = method.getSimpleName().toString();
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287 if (generatedIsMethodNames.contains(methodName)) {
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288 valid &= verifyIsMethod(method);
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289 } else if (generatedAsMethodNames.contains(methodName)) {
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290 valid &= verifyAsMethod(method);
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291 } else if (generatedExpectMethodNames.contains(methodName)) {
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292 valid &= verifyExpectMethod(method);
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293 }
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294 }
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295 return valid;
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296 }
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297
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298 private boolean verifyIsMethod(ExecutableElement method) {
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299 AnnotationMirror mirror = Utils.findAnnotationMirror(processingEnv, method, TypeCheck.class);
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300 if (mirror == null) {
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301 log.error(method, "Method starting with the pattern is${typeName} must be annotated with @%s.", TypeCheck.class.getSimpleName());
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302 return false;
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303 }
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304 return true;
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305 }
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306
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307 private boolean verifyAsMethod(ExecutableElement method) {
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308 AnnotationMirror mirror = Utils.findAnnotationMirror(processingEnv, method, TypeCast.class);
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309 if (mirror == null) {
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310 log.error(method, "Method starting with the pattern as${typeName} must be annotated with @%s.", TypeCast.class.getSimpleName());
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311 return false;
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312 }
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313 return true;
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314 }
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315
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316 private boolean verifyExpectMethod(ExecutableElement method) {
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317 log.error(method, "Method starting with the pattern expect${typeName} must not be declared manually.");
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318 return false;
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319 }
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320
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321 private boolean verifyNamesUnique(TypeElement templateType, AnnotationMirror templateTypeAnnotation, TypeData[] types) {
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322 boolean valid = true;
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323 for (int i = 0; i < types.length; i++) {
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324 for (int j = i + 1; j < types.length; j++) {
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325 String name1 = Utils.getSimpleName(types[i].getBoxedType());
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326 String name2 = Utils.getSimpleName(types[j].getBoxedType());
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327 if (name1.equalsIgnoreCase(name2)) {
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328 log.error(templateType, templateTypeAnnotation, "Two types result in the same name: %s, %s.", name1, name2);
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329 valid = false;
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330 }
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331 }
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332 }
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333 return valid;
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334 }
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335 }