Mercurial > hg > truffle
annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/AnnotationProcessor.java @ 16759:23415229349b
Truffle-DSL: new package structure.
author | Christian Humer <christian.humer@gmail.com> |
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date | Mon, 11 Aug 2014 15:57:14 +0200 |
parents | bd28da642eea |
children | 45c8f64978d6 |
rev | line source |
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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 java.io.*; |
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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.element.*; |
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30 import javax.lang.model.type.*; |
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31 import javax.tools.*; |
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32 |
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33 import com.oracle.truffle.dsl.processor.generator.*; |
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34 import com.oracle.truffle.dsl.processor.java.*; |
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35 import com.oracle.truffle.dsl.processor.java.compiler.*; |
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36 import com.oracle.truffle.dsl.processor.java.model.*; |
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37 import com.oracle.truffle.dsl.processor.java.transform.*; |
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38 import com.oracle.truffle.dsl.processor.model.*; |
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39 import com.oracle.truffle.dsl.processor.parser.*; |
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40 |
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41 /** |
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42 * THIS IS NOT PUBLIC API. |
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43 */ |
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44 class AnnotationProcessor<M extends Template> { |
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45 |
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46 private final AbstractParser<M> parser; |
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47 private final AbstractCompilationUnitFactory<M> factory; |
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48 |
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49 private final Set<String> processedElements = new HashSet<>(); |
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50 |
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51 public AnnotationProcessor(AbstractParser<M> parser, AbstractCompilationUnitFactory<M> factory) { |
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52 this.parser = parser; |
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53 this.factory = factory; |
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54 } |
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55 |
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56 public AbstractParser<M> getParser() { |
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57 return parser; |
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58 } |
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59 |
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60 @SuppressWarnings({"unchecked"}) |
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61 public void process(Element element, boolean callback) { |
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62 // since it is not guaranteed to be called only once by the compiler |
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63 // we check for already processed elements to avoid errors when writing files. |
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64 if (!callback && element instanceof TypeElement) { |
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65 String qualifiedName = ElementUtils.getQualifiedName((TypeElement) element); |
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66 if (processedElements.contains(qualifiedName)) { |
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67 return; |
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68 } |
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69 processedElements.add(qualifiedName); |
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70 } |
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71 |
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72 ProcessorContext context = ProcessorContext.getInstance(); |
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73 TypeElement type = (TypeElement) element; |
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74 |
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75 M model = (M) context.getTemplate(type.asType(), false); |
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76 boolean firstRun = !context.containsTemplate(type); |
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77 |
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78 if (firstRun || !callback) { |
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79 context.registerTemplate(type, null); |
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80 model = parser.parse(element); |
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81 context.registerTemplate(type, model); |
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82 |
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83 if (model != null) { |
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84 CodeCompilationUnit unit = factory.process(null, model); |
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85 unit.setGeneratorAnnotationMirror(model.getTemplateTypeAnnotation()); |
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86 unit.setGeneratorElement(model.getTemplateType()); |
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87 |
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88 DeclaredType overrideType = (DeclaredType) context.getType(Override.class); |
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89 DeclaredType unusedType = (DeclaredType) context.getType(SuppressWarnings.class); |
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90 unit.accept(new GenerateOverrideVisitor(overrideType), null); |
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91 unit.accept(new FixWarningsVisitor(context, unusedType, overrideType), null); |
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92 |
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93 if (!callback) { |
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94 unit.accept(new CodeWriter(context.getEnvironment(), element), null); |
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95 } |
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96 } |
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97 } |
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98 } |
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99 |
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100 private static class CodeWriter extends AbstractCodeWriter { |
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101 |
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102 private final Element originalElement; |
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103 private final ProcessingEnvironment env; |
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104 |
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105 public CodeWriter(ProcessingEnvironment env, Element originalElement) { |
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106 this.env = env; |
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107 this.originalElement = originalElement; |
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108 } |
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109 |
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110 @Override |
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111 protected Writer createWriter(CodeTypeElement clazz) throws IOException { |
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112 JavaFileObject jfo = env.getFiler().createSourceFile(clazz.getQualifiedName(), originalElement); |
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113 return new BufferedWriter(jfo.openWriter()); |
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114 } |
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115 |
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116 @Override |
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117 protected void writeHeader() { |
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118 if (env == null) { |
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119 return; |
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120 } |
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121 String comment = CompilerFactory.getCompiler(originalElement).getHeaderComment(env, originalElement); |
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122 if (comment != null) { |
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123 writeLn(comment); |
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124 } |
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129 } |