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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/template/MessageContainer.java @ 11542:f15d955897b7

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Truffle-DSL: fixed message container was redirecting messages too often.
author Christian Humer <christian.humer@gmail.com>
date Fri, 06 Sep 2013 16:08:59 +0200
parents 43eab069ca9b
children 25ecb47a6d0e
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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.template;
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24
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25 import java.util.*;
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27 import javax.lang.model.element.*;
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28 import javax.tools.Diagnostic.Kind;
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29
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30 import com.oracle.truffle.dsl.processor.*;
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32 public abstract class MessageContainer {
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34 private final List<Message> messages = new ArrayList<>();
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35
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36 public final void addWarning(String text, Object... params) {
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37 getMessages().add(new Message(null, this, String.format(text, params), Kind.WARNING));
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38 }
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39
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40 public final void addError(String text, Object... params) {
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41 addError(null, text, params);
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42 }
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44 public final void addError(AnnotationValue value, String text, Object... params) {
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45 getMessages().add(new Message(value, this, String.format(text, params), Kind.ERROR));
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46 }
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48 protected List<MessageContainer> findChildContainers() {
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49 return Collections.emptyList();
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50 }
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52 public abstract Element getMessageElement();
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53
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54 public final void emitMessages(ProcessorContext context, TypeElement baseElement, Log log) {
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55 emitMessagesImpl(context, baseElement, log, new HashSet<MessageContainer>(), null);
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56 }
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57
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58 private void emitMessagesImpl(ProcessorContext context, TypeElement baseElement, Log log, Set<MessageContainer> visitedSinks, List<Message> verifiedMessages) {
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59 List<Message> childMessages;
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60 if (verifiedMessages == null) {
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61 childMessages = collectMessagesWithElementChildren(new HashSet<MessageContainer>(), getMessageElement());
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62 } else {
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63 childMessages = verifiedMessages;
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64 }
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65 verifyExpectedMessages(context, log, childMessages);
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66
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67 for (Message message : getMessages()) {
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68 emitDefault(context, baseElement, log, message);
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69 }
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70
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71 for (MessageContainer sink : findChildContainers()) {
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72 if (visitedSinks.contains(sink)) {
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73 continue;
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74 }
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75
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76 visitedSinks.add(sink);
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77 if (sink.getMessageElement() == this.getMessageElement()) {
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78 sink.emitMessagesImpl(context, baseElement, log, visitedSinks, childMessages);
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79 } else {
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80 sink.emitMessagesImpl(context, baseElement, log, visitedSinks, null);
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81 }
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82 }
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83 }
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84
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85 private List<Message> collectMessagesWithElementChildren(Set<MessageContainer> visitedSinks, Element e) {
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86 if (visitedSinks.contains(this)) {
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87 return Collections.emptyList();
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88 }
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89 visitedSinks.add(this);
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90
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91 List<Message> foundMessages = new ArrayList<>();
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92 if (Utils.typeEquals(getMessageElement().asType(), e.asType())) {
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93 foundMessages.addAll(getMessages());
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94 }
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95 for (MessageContainer sink : findChildContainers()) {
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96 foundMessages.addAll(sink.collectMessagesWithElementChildren(visitedSinks, e));
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97 }
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98 return foundMessages;
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99 }
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100
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101 private void verifyExpectedMessages(ProcessorContext context, Log log, List<Message> msgs) {
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102 TypeElement expectError = context.getTruffleTypes().getExpectError();
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103 if (expectError != null) {
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104 Element element = getMessageElement();
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105 AnnotationMirror mirror = Utils.findAnnotationMirror(element.getAnnotationMirrors(), expectError);
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106 if (mirror != null) {
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107 List<String> values = Utils.getAnnotationValueList(String.class, mirror, "value");
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108 if (values == null) {
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109 values = Collections.emptyList();
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110 }
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111 if (values.size() != msgs.size()) {
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112 log.message(Kind.ERROR, element, mirror, Utils.getAnnotationValue(mirror, "value"), String.format("Error count expected %s but was %s.", values.size(), msgs.size()));
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113 }
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114 }
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115 }
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116 }
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117
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118 private void emitDefault(ProcessorContext context, TypeElement baseType, Log log, Message message) {
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119 Kind kind = message.getKind();
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120
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121 Element messageElement = getMessageElement();
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122 AnnotationMirror messageAnnotation = getMessageAnnotation();
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123 AnnotationValue messageValue = getMessageAnnotationValue();
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124 if (message.getAnnotationValue() != null) {
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125 messageValue = message.getAnnotationValue();
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126 }
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127
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128 String text = message.getText();
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129
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130 TypeElement rootEnclosing = Utils.findRootEnclosingType(getMessageElement());
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131 TypeElement baseEnclosing = Utils.findRootEnclosingType(baseType);
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132 if (rootEnclosing == null || !Utils.typeEquals(baseEnclosing.asType(), rootEnclosing.asType())) {
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133 // redirect message
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134 MessageContainer original = message.getOriginalContainer();
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135 messageElement = baseType;
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136 messageAnnotation = null;
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137 messageValue = null;
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138 text = wrapText(original.getMessageElement(), original.getMessageAnnotation(), message.getText());
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139 }
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140
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141 TypeElement expectError = context.getTruffleTypes().getExpectError();
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142 if (expectError != null) {
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143 AnnotationMirror mirror = Utils.findAnnotationMirror(messageElement.getAnnotationMirrors(), expectError);
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144 if (mirror != null) {
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145 List<String> expectedTexts = Utils.getAnnotationValueList(String.class, mirror, "value");
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146 boolean found = false;
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147 for (String expectedText : expectedTexts) {
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148 if (expectedText.endsWith("%") && text.startsWith(expectedText.substring(0, expectedText.length() - 1))) {
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149 found = true;
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150 break;
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151 } else if (text.equals(expectedText)) {
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152 found = true;
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153 break;
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154 }
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155 }
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156 if (!found) {
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157 log.message(kind, messageElement, mirror, Utils.getAnnotationValue(mirror, "value"), "Message expected one of '%s' but was '%s'.", expectedTexts, text);
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158 } else {
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159 return;
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160 }
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161
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162 }
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163 }
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164
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165 log.message(kind, messageElement, messageAnnotation, messageValue, text);
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166 }
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167
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168 private static String wrapText(Element element, AnnotationMirror mirror, String text) {
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169 StringBuilder b = new StringBuilder();
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170 if (element != null) {
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171 b.append("Element " + element.toString());
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172 }
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173 if (mirror != null) {
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174 b.append(" at annotation @" + Utils.getSimpleName(mirror.getAnnotationType()));
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175 }
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176
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177 if (b.length() > 0) {
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178 b.append(" is erroneous: ").append(text);
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179 return b.toString();
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180 } else {
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181 return text;
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182 }
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183 }
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184
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185 public AnnotationMirror getMessageAnnotation() {
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186 return null;
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187 }
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188
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189 public AnnotationValue getMessageAnnotationValue() {
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190 return null;
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191 }
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192
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193 public final boolean hasErrors() {
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194 return hasErrorsImpl(new HashSet<MessageContainer>());
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195 }
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196
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197 public final List<Message> collectMessages() {
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198 List<Message> collectedMessages = new ArrayList<>();
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199 collectMessagesImpl(collectedMessages, new HashSet<MessageContainer>());
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200 return collectedMessages;
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201 }
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202
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203 private void collectMessagesImpl(List<Message> collectedMessages, Set<MessageContainer> visitedSinks) {
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204 collectedMessages.addAll(getMessages());
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205 for (MessageContainer sink : findChildContainers()) {
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206 if (visitedSinks.contains(sink)) {
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207 return;
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208 }
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209
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210 visitedSinks.add(sink);
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211 sink.collectMessagesImpl(collectedMessages, visitedSinks);
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212 }
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213 }
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214
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215 private boolean hasErrorsImpl(Set<MessageContainer> visitedSinks) {
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216 for (Message msg : getMessages()) {
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217 if (msg.getKind() == Kind.ERROR) {
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218 return true;
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219 }
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220 }
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221 for (MessageContainer sink : findChildContainers()) {
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222 if (visitedSinks.contains(sink)) {
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223 return false;
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224 }
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225
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226 visitedSinks.add(sink);
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227
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228 if (sink.hasErrorsImpl(visitedSinks)) {
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229 return true;
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230 }
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231 }
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232 return false;
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233 }
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234
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235 public List<Message> getMessages() {
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236 return messages;
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237 }
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238
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239 public static final class Message {
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240
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241 private final MessageContainer originalContainer;
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242 private final AnnotationValue annotationValue;
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243 private final String text;
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244 private final Kind kind;
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245
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246 public Message(AnnotationValue annotationValue, MessageContainer originalContainer, String text, Kind kind) {
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247 this.annotationValue = annotationValue;
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248 this.originalContainer = originalContainer;
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249 this.text = text;
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250 this.kind = kind;
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251 }
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252
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253 public AnnotationValue getAnnotationValue() {
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254 return annotationValue;
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255 }
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256
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257 public MessageContainer getOriginalContainer() {
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258 return originalContainer;
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259 }
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260
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261 public String getText() {
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262 return text;
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263 }
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264
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265 public Kind getKind() {
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266 return kind;
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267 }
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268
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269 @Override
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270 public String toString() {
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271 return kind + ": " + text;
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272 }
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273
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274 }
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275
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276 }