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annotate truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/AnnotationProcessor.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 9c8c0937da41
children
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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.generator.CodeTypeElementFactory;
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26 import com.oracle.truffle.dsl.processor.java.ElementUtils;
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27 import com.oracle.truffle.dsl.processor.java.model.CodeTypeElement;
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28 import com.oracle.truffle.dsl.processor.java.transform.FixWarningsVisitor;
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29 import com.oracle.truffle.dsl.processor.java.transform.GenerateOverrideVisitor;
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30 import com.oracle.truffle.dsl.processor.model.Template;
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31 import com.oracle.truffle.dsl.processor.parser.AbstractParser;
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32 import java.util.HashSet;
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33 import java.util.Set;
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34 import javax.lang.model.element.Element;
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35 import javax.lang.model.element.TypeElement;
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36 import javax.lang.model.type.DeclaredType;
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37
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38 /**
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39 * THIS IS NOT PUBLIC API.
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40 */
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41 class AnnotationProcessor<M extends Template> {
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42
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43 private final AbstractParser<M> parser;
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44 private final CodeTypeElementFactory<M> factory;
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45
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46 private final Set<String> processedElements = new HashSet<>();
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47
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48 public AnnotationProcessor(AbstractParser<M> parser, CodeTypeElementFactory<M> factory) {
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49 this.parser = parser;
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50 this.factory = factory;
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51 }
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52
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53 public AbstractParser<M> getParser() {
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54 return parser;
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55 }
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56
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57 @SuppressWarnings({"unchecked"})
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58 public void process(Element element, boolean callback) {
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59 // since it is not guaranteed to be called only once by the compiler
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60 // we check for already processed elements to avoid errors when writing files.
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61 if (!callback && element instanceof TypeElement) {
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62 String qualifiedName = ElementUtils.getQualifiedName((TypeElement) element);
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63 if (processedElements.contains(qualifiedName)) {
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64 return;
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65 }
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66 processedElements.add(qualifiedName);
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67 }
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68
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69 ProcessorContext context = ProcessorContext.getInstance();
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70 TypeElement type = (TypeElement) element;
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71
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72 M model = (M) context.getTemplate(type.asType(), false);
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73 boolean firstRun = !context.containsTemplate(type);
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74
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75 if (firstRun || !callback) {
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76 context.registerTemplate(type, null);
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77 model = parser.parse(element);
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78 context.registerTemplate(type, model);
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79
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80 if (model != null) {
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81 CodeTypeElement unit;
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82 try {
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83 unit = factory.create(ProcessorContext.getInstance(), model);
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84 } catch (Throwable e) {
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85 throw new RuntimeException(String.format("Failed to write code for %s. Parserdump:%s.", ElementUtils.getQualifiedName(type), ""), e);
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86 }
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87 if (unit == null) {
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88 return;
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89 }
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90 unit.setGeneratorAnnotationMirror(model.getTemplateTypeAnnotation());
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91 unit.setGeneratorElement(model.getTemplateType());
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93 DeclaredType overrideType = (DeclaredType) context.getType(Override.class);
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94 DeclaredType unusedType = (DeclaredType) context.getType(SuppressWarnings.class);
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95 unit.accept(new GenerateOverrideVisitor(overrideType), null);
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96 unit.accept(new FixWarningsVisitor(context.getEnvironment(), unusedType, overrideType), null);
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97
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98 if (!callback) {
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99 unit.accept(new CodeWriter(context.getEnvironment(), element), null);
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100 }
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101 }
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102 }
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103 }
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104 }