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annotate truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/TruffleProcessor.java @ 22157:dc83cc1f94f2

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Using fully qualified imports
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 16 Sep 2015 11:33:22 +0200
parents bc92dd85cf08
children 93904485c5a5
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1 /*
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2 * Copyright (c) 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;
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24
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25 import com.oracle.truffle.dsl.processor.ProcessorContext.ProcessCallback;
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26 import com.oracle.truffle.dsl.processor.generator.NodeCodeGenerator;
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27 import com.oracle.truffle.dsl.processor.generator.TypeSystemCodeGenerator;
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28 import com.oracle.truffle.dsl.processor.java.ElementUtils;
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29 import com.oracle.truffle.dsl.processor.parser.AbstractParser;
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30 import com.oracle.truffle.dsl.processor.parser.NodeParser;
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31 import com.oracle.truffle.dsl.processor.parser.TypeSystemParser;
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32 import java.lang.annotation.Annotation;
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33 import java.util.ArrayList;
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34 import java.util.HashSet;
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35 import java.util.List;
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36 import java.util.Set;
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37 import javax.annotation.processing.AbstractProcessor;
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38 import javax.annotation.processing.ProcessingEnvironment;
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39 import javax.annotation.processing.RoundEnvironment;
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40 import javax.lang.model.SourceVersion;
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41 import javax.lang.model.element.Element;
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42 import javax.lang.model.element.TypeElement;
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43 import javax.tools.Diagnostic.Kind;
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44
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45 /**
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46 * THIS IS NOT PUBLIC API.
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47 */
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48 public class TruffleProcessor extends AbstractProcessor implements ProcessCallback {
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50 private List<AnnotationProcessor<?>> generators;
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51
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52 @Override
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53 public SourceVersion getSupportedSourceVersion() {
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54 return SourceVersion.latest();
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55 }
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56
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57 @Override
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58 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
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59 if (!roundEnv.processingOver()) {
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60 processImpl(roundEnv);
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61 }
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62 return false;
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63 }
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64
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65 private void processImpl(RoundEnvironment env) {
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66 // TODO run verifications that other annotations are not processed out of scope of the
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67 // operation or typelattice.
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68 try {
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69 ProcessorContext.setThreadLocalInstance(new ProcessorContext(processingEnv, this));
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70 for (AnnotationProcessor<?> generator : getGenerators()) {
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71 AbstractParser<?> parser = generator.getParser();
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72 if (parser.getAnnotationType() != null) {
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73 for (Element e : env.getElementsAnnotatedWith(parser.getAnnotationType())) {
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74 processElement(generator, e, false);
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75 }
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76 }
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77
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78 for (Class<? extends Annotation> annotationType : parser.getTypeDelegatedAnnotationTypes()) {
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79 for (Element e : env.getElementsAnnotatedWith(annotationType)) {
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80 TypeElement processedType;
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81 if (parser.isDelegateToRootDeclaredType()) {
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82 processedType = ElementUtils.findRootEnclosingType(e);
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83 } else {
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84 processedType = ElementUtils.findNearestEnclosingType(e);
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85 }
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86 processElement(generator, processedType, false);
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87 }
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88 }
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90 }
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91 } finally {
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92 ProcessorContext.setThreadLocalInstance(null);
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93 }
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94 }
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95
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96 private static void processElement(AnnotationProcessor<?> generator, Element e, boolean callback) {
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97 try {
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98 generator.process(e, callback);
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99 } catch (Throwable e1) {
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100 handleThrowable(generator, e1, e);
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101 }
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102 }
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103
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104 private static void handleThrowable(AnnotationProcessor<?> generator, Throwable t, Element e) {
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105 String message = "Uncaught error in " + generator.getClass().getSimpleName() + " while processing " + e + " ";
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106 ProcessorContext.getInstance().getEnvironment().getMessager().printMessage(Kind.ERROR, message + ": " + ElementUtils.printException(t), e);
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107 }
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108
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109 @Override
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110 public void callback(TypeElement template) {
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111 for (AnnotationProcessor<?> generator : generators) {
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112 Class<? extends Annotation> annotationType = generator.getParser().getAnnotationType();
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113 if (annotationType != null) {
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114 Annotation annotation = template.getAnnotation(annotationType);
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115 if (annotation != null) {
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116 processElement(generator, template, true);
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117 }
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118 }
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119 }
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120 }
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121
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122 @Override
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123 public Set<String> getSupportedAnnotationTypes() {
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124 Set<String> annotations = new HashSet<>();
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125 List<Class<? extends Annotation>> annotationsTypes = new ArrayList<>();
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126 annotationsTypes.addAll(NodeParser.ANNOTATIONS);
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127 annotationsTypes.addAll(TypeSystemParser.ANNOTATIONS);
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128 for (Class<? extends Annotation> type : annotationsTypes) {
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129 annotations.add(type.getCanonicalName());
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130 }
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131 return annotations;
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132 }
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133
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134 private List<AnnotationProcessor<?>> getGenerators() {
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135 if (generators == null && processingEnv != null) {
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136 generators = new ArrayList<>();
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137 generators.add(new AnnotationProcessor<>(new TypeSystemParser(), new TypeSystemCodeGenerator()));
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138 generators.add(new AnnotationProcessor<>(new NodeParser(), new NodeCodeGenerator()));
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139 }
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140 return generators;
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141 }
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142
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143 @Override
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144 public synchronized void init(ProcessingEnvironment env) {
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145 this.processingEnv = env;
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146 super.init(env);
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147 }
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148
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149 }