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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/AbstractParser.java @ 11466:4830676526e3

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Truffle-DSL: added infrastructure to assert for DSL error messages.
author Christian Humer <christian.humer@gmail.com>
date Thu, 29 Aug 2013 17:39:55 +0200
parents 79041ab43660
children bd28da642eea
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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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25 import java.lang.annotation.*;
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26 import java.util.*;
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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.tools.Diagnostic.Kind;
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32 import com.oracle.truffle.dsl.processor.template.*;
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34 /**
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35 * THIS IS NOT PUBLIC API.
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36 */
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37 public abstract class AbstractParser<M extends Template> {
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38
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39 protected final ProcessorContext context;
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40 protected final ProcessingEnvironment processingEnv;
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41 protected RoundEnvironment roundEnv;
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42
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43 protected final Log log;
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44
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45 public AbstractParser(ProcessorContext c) {
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46 this.context = c;
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47 this.processingEnv = c.getEnvironment();
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48 this.log = c.getLog();
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49 }
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51 public final M parse(RoundEnvironment env, Element element) {
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52 this.roundEnv = env;
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53 M model = null;
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54 try {
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55 AnnotationMirror mirror = null;
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56 if (getAnnotationType() != null) {
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57 mirror = Utils.findAnnotationMirror(processingEnv, element.getAnnotationMirrors(), getAnnotationType());
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58 }
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59
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60 if (!context.getTruffleTypes().verify(context, element, mirror)) {
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61 return null;
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62 }
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63 model = parse(element, mirror);
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64 if (model == null) {
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65 return null;
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66 }
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67
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68 model.emitMessages(context, (TypeElement) element, log);
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69 return filterErrorElements(model);
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70 } catch (CompileErrorException e) {
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71 log.message(Kind.WARNING, element, null, null, "The truffle processor could not parse class due to error: %s", e.getMessage());
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72 return null;
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73 } finally {
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74 this.roundEnv = null;
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75 }
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76 }
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77
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78 protected M filterErrorElements(M model) {
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79 return model.hasErrors() ? null : model;
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80 }
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81
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82 protected abstract M parse(Element element, AnnotationMirror mirror);
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84 public abstract Class<? extends Annotation> getAnnotationType();
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85
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86 public boolean isDelegateToRootDeclaredType() {
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87 return false;
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88 }
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89
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90 public List<Class<? extends Annotation>> getAllAnnotationTypes() {
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91 List<Class<? extends Annotation>> list = new ArrayList<>();
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92 if (getAnnotationType() != null) {
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93 list.add(getAnnotationType());
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94 }
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95 list.addAll(getTypeDelegatedAnnotationTypes());
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96 return list;
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97 }
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98
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99 public List<Class<? extends Annotation>> getTypeDelegatedAnnotationTypes() {
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100 return Collections.emptyList();
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101 }
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102
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103 }