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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/AbstractParser.java @ 16755:bd28da642eea

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Truffle-DSL: Several new features implemented: Implementation of a new code generation layout which shares code between generated nodes. Declaration order of specializations is now used as specialization order. Specializations do no longer perform fallthrough on respecialization, they now always respecialize from the first specialization. Implemented support for contains relations between specializations. Improved reachability error messages. Preliminary support for @Implies.
author Christian Humer <christian.humer@gmail.com>
date Mon, 11 Aug 2014 15:53:05 +0200
parents 4830676526e3
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 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.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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33 import com.oracle.truffle.dsl.processor.template.MessageContainer.*;
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34
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35 /**
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36 * THIS IS NOT PUBLIC API.
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37 */
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38 public abstract class AbstractParser<M extends Template> {
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39
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40 protected final ProcessorContext context;
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41 protected final ProcessingEnvironment processingEnv;
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42 protected RoundEnvironment roundEnv;
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44 protected final Log log;
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45
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46 public AbstractParser() {
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47 this.context = ProcessorContext.getInstance();
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48 this.processingEnv = context.getEnvironment();
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49 this.log = context.getLog();
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50 }
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51
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52 public final M parse(RoundEnvironment env, Element element) {
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53 this.roundEnv = env;
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54 M model = null;
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55 try {
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56 AnnotationMirror mirror = null;
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57 if (getAnnotationType() != null) {
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58 mirror = Utils.findAnnotationMirror(processingEnv, element.getAnnotationMirrors(), getAnnotationType());
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59 }
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60
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61 if (!context.getTruffleTypes().verify(context, element, mirror)) {
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62 return null;
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63 }
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64 model = parse(element, mirror);
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65 if (model == null) {
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66 return null;
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67 }
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68
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69 redirectMessages(new HashSet<MessageContainer>(), model, model);
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70 model.emitMessages(context, log);
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71 return filterErrorElements(model);
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72 } catch (CompileErrorException e) {
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73 log.message(Kind.WARNING, element, null, null, "The truffle processor could not parse class due to error: %s", e.getMessage());
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74 return null;
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75 } finally {
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76 this.roundEnv = null;
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77 }
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78 }
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79
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80 private void redirectMessages(Set<MessageContainer> visitedSinks, MessageContainer model, MessageContainer baseContainer) {
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81 List<Message> messages = model.getMessages();
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82 for (int i = messages.size() - 1; i >= 0; i--) {
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83 Message message = messages.get(i);
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84 if (!Utils.isEnclosedIn(baseContainer.getMessageElement(), message.getOriginalContainer().getMessageElement())) {
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85 // redirect message
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86 MessageContainer original = message.getOriginalContainer();
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87 String text = wrapText(original.getMessageElement(), original.getMessageAnnotation(), message.getText());
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88 Message redirectedMessage = new Message(null, baseContainer, text, message.getKind());
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89 model.getMessages().remove(i);
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90 baseContainer.getMessages().add(redirectedMessage);
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91 }
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92 }
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93
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94 for (MessageContainer childContainer : model) {
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95 if (visitedSinks.contains(childContainer)) {
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96 continue;
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97 }
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98 visitedSinks.add(childContainer);
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99
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100 MessageContainer newBase = baseContainer;
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101 if (childContainer.getBaseContainer() != null) {
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102 newBase = childContainer.getBaseContainer();
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103 }
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104 redirectMessages(visitedSinks, childContainer, newBase);
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105 }
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106 }
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107
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108 private static String wrapText(Element element, AnnotationMirror mirror, String text) {
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109 StringBuilder b = new StringBuilder();
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110 if (element != null) {
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111 b.append("Element " + element.toString());
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112 }
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113 if (mirror != null) {
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114 b.append(" at annotation @" + Utils.getSimpleName(mirror.getAnnotationType()));
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115 }
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116
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117 if (b.length() > 0) {
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118 b.append(" is erroneous: ").append(text);
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119 return b.toString();
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120 } else {
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121 return text;
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122 }
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123 }
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124
10597
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125 protected M filterErrorElements(M model) {
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126 return model.hasErrors() ? null : model;
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127 }
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128
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129 protected abstract M parse(Element element, AnnotationMirror mirror);
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130
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131 public abstract Class<? extends Annotation> getAnnotationType();
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132
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133 public boolean isDelegateToRootDeclaredType() {
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134 return false;
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135 }
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136
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137 public List<Class<? extends Annotation>> getAllAnnotationTypes() {
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138 List<Class<? extends Annotation>> list = new ArrayList<>();
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139 if (getAnnotationType() != null) {
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140 list.add(getAnnotationType());
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141 }
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142 list.addAll(getTypeDelegatedAnnotationTypes());
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143 return list;
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144 }
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145
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146 public List<Class<? extends Annotation>> getTypeDelegatedAnnotationTypes() {
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147 return Collections.emptyList();
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148 }
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149
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150 }