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annotate graal/com.oracle.truffle.codegen.processor/src/com/oracle/truffle/codegen/processor/TruffleProcessor.java @ 7502:6343a09b2ec1

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Codegen operation generation is inferred from the node type hierarchy.
author Christian Humer <christian.humer@gmail.com>
date Fri, 18 Jan 2013 13:28:12 +0100
parents a748e4d44694
children 40133ce026c6
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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.codegen.processor;
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24
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25 import java.lang.annotation.*;
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26 import java.util.*;
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27
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28 import javax.annotation.processing.*;
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29 import javax.lang.model.*;
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30 import javax.lang.model.element.*;
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31
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32 import com.oracle.truffle.codegen.processor.ProcessorContext.ProcessCallback;
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33 import com.oracle.truffle.codegen.processor.node.*;
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34 import com.oracle.truffle.codegen.processor.typesystem.*;
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35
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36 /**
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37 * THIS IS NOT PUBLIC API.
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38 */
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39 //@SupportedAnnotationTypes({"com.oracle.truffle.codegen.Operation", "com.oracle.truffle.codegen.TypeLattice"})
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40 @SupportedSourceVersion(SourceVersion.RELEASE_7)
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41 public class TruffleProcessor extends AbstractProcessor implements ProcessCallback {
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42
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43 private ProcessorContext context;
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44 private List<AnnotationProcessor< ? >> generators;
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45
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46 private RoundEnvironment round;
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47
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48 @Override
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49 public boolean process(Set< ? extends TypeElement> annotations, RoundEnvironment roundEnv) {
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50 if (!roundEnv.processingOver()) {
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51 processImpl(roundEnv);
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52 }
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53 return false;
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54 }
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55
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56 private void processImpl(RoundEnvironment env) {
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57 this.round = env;
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58 // TODO run verifications that other annotations are not processed out of scope of the operation or typelattice.
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59 try {
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60 for (AnnotationProcessor generator : getGenerators()) {
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61 AbstractParser<?> parser = generator.getParser();
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62 if (parser.getAnnotationType() != null) {
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63 for (Element e : env.getElementsAnnotatedWith(parser.getAnnotationType())) {
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64 processElement(env, generator, e, false);
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65 }
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66 }
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67
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68 for (Class<? extends Annotation> annotationType : parser.getTypeDelegatedAnnotationTypes()) {
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69 for (Element e : env.getElementsAnnotatedWith(annotationType)) {
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70 TypeElement processedType;
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71 if (parser.isDelegateToRootDeclaredType()) {
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72 processedType = Utils.findRootEnclosingType(e);
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73 } else {
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74 processedType = Utils.findNearestEnclosingType(e);
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75 }
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76 processElement(env, generator, processedType, false);
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77 }
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78 }
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79
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80 }
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81 } finally {
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82 this.round = null;
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83 }
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84 }
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85
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86 private static void processElement(RoundEnvironment env, AnnotationProcessor generator, Element e, boolean callback) {
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87 try {
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88 generator.process(env, e, callback);
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89 } catch (Throwable e1) {
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90 handleThrowable(generator, e1, e);
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91 }
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92 }
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94 private static void handleThrowable(AnnotationProcessor generator, Throwable t, Element e) {
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95 String message = "Uncaught error in " + generator.getClass().getSimpleName() + " while processing " + e;
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96 generator.getContext().getLog().error(e, message + ": " + Utils.printException(t));
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97 }
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98
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99 @SuppressWarnings("unchecked")
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100 @Override
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101 public void callback(TypeElement template) {
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102 for (AnnotationProcessor generator : generators) {
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103 Class annotationType = generator.getParser().getAnnotationType();
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104 if (annotationType != null) {
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105 Annotation annotation = template.getAnnotation(annotationType);
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106 if (annotation != null) {
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107 processElement(round, generator, template, true);
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108 }
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109 }
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110 }
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111 }
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112
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113 @Override
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114 public Set<String> getSupportedAnnotationTypes() {
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115 Set<String> annotations = new HashSet<>();
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116 for (AnnotationProcessor< ? > generator : getGenerators()) {
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117 for (Class<? extends Annotation> annotationClass : generator.getParser().getAllAnnotationTypes()) {
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118 if (annotationClass == null) {
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119 throw new NullPointerException("class is null");
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120 }
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121 annotations.add(annotationClass.getCanonicalName());
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122 }
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123 }
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124 return annotations;
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125 }
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126
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127 private List<AnnotationProcessor< ? >> getGenerators() {
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128 if (generators == null && processingEnv != null) {
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129 generators = new ArrayList<>();
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130 generators.add(new AnnotationProcessor<>(getContext(), new TypeSystemParser(getContext()), new TypeSystemCodeGenerator(getContext())));
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131 generators.add(new AnnotationProcessor<>(getContext(), new NodeParser(getContext()), new NodeCodeGenerator(getContext())));
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132 }
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133 return generators;
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134 }
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135
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136 private ProcessorContext getContext() {
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137 if (context == null) {
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138 context = new ProcessorContext(processingEnv, this);
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139 }
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140 return context;
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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 }