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annotate truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/java/compiler/JDTCompiler.java @ 22326:6cec0097107f

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added workaround based on JDK-8075793 to allow compilation with JDK9 javac
author Doug Simon <doug.simon@oracle.com>
date Mon, 26 Oct 2015 13:28:19 +0100
parents dc83cc1f94f2
children 4a43dc00a654
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rev   line source
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1 /*
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2 * Copyright (c) 2012, 2014, 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.java.compiler;
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24
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25 import com.oracle.truffle.dsl.processor.java.ElementUtils;
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26
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27 import java.util.ArrayList;
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28 import java.util.Arrays;
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29 import java.util.Collections;
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30 import java.util.Comparator;
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31 import java.util.HashMap;
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32 import java.util.List;
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33 import java.util.Map;
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34 import java.util.TreeMap;
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35
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36 import javax.annotation.processing.ProcessingEnvironment;
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37 import javax.lang.model.element.Element;
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38 import javax.lang.model.element.ExecutableElement;
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39 import javax.lang.model.element.TypeElement;
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40
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41 public class JDTCompiler extends AbstractCompiler {
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42
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43 public static boolean isValidElement(Element currentElement) {
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44 try {
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45 Class<?> elementClass = Class.forName("org.eclipse.jdt.internal.compiler.apt.model.ElementImpl");
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46 return elementClass.isAssignableFrom(currentElement.getClass());
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47 } catch (ClassNotFoundException e) {
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48 return false;
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49 }
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50 }
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51
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52 /**
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53 * @see "https://bugs.openjdk.java.net/browse/JDK-8039214"
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54 */
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55 private static List<Element> newElementList(List<? extends Element> src) {
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56 List<Element> workaround = new ArrayList<>(src);
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57 return workaround;
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58 }
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59
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60 public List<? extends Element> getAllMembersInDeclarationOrder(ProcessingEnvironment environment, TypeElement type) {
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61 return sortBySourceOrder(newElementList(environment.getElementUtils().getAllMembers(type)));
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62 }
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63
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64 public List<? extends Element> getEnclosedElementsInDeclarationOrder(TypeElement type) {
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65 return sortBySourceOrder(newElementList(type.getEnclosedElements()));
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66 }
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67
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68 private static List<? extends Element> sortBySourceOrder(List<Element> elements) {
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69 Map<TypeElement, List<Element>> groupedByEnclosing = new HashMap<>();
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70 for (Element element : elements) {
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71 Element enclosing = element.getEnclosingElement();
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72 List<Element> grouped = groupedByEnclosing.get(enclosing);
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73 if (grouped == null) {
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74 grouped = new ArrayList<>();
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75 groupedByEnclosing.put((TypeElement) enclosing, grouped);
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76 }
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77 grouped.add(element);
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78 }
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79
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80 for (TypeElement enclosing : groupedByEnclosing.keySet()) {
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81 Collections.sort(groupedByEnclosing.get(enclosing), createSourceOrderComparator(enclosing));
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82 }
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83
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84 if (groupedByEnclosing.size() == 1) {
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85 return groupedByEnclosing.get(groupedByEnclosing.keySet().iterator().next());
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86 } else {
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87 List<TypeElement> enclosingTypes = new ArrayList<>(groupedByEnclosing.keySet());
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88
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89 Collections.sort(enclosingTypes, new Comparator<TypeElement>() {
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90 public int compare(TypeElement o1, TypeElement o2) {
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91 if (ElementUtils.isSubtype(o1.asType(), o2.asType())) {
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92 return 1;
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93 } else {
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94 return -1;
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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 List<Element> sourceOrderElements = new ArrayList<>();
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100 for (TypeElement typeElement : enclosingTypes) {
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101 sourceOrderElements.addAll(groupedByEnclosing.get(typeElement));
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102 }
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103 return sourceOrderElements;
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104 }
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105
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106 }
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107
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108 private static Comparator<Element> createSourceOrderComparator(final TypeElement enclosing) {
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109
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110 Comparator<Element> comparator = new Comparator<Element>() {
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111
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112 final List<Object> declarationOrder = lookupDeclarationOrder(enclosing);
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113
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114 public int compare(Element o1, Element o2) {
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diff changeset
115 try {
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116 Element enclosing1Element = o1.getEnclosingElement();
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117 Element enclosing2Element = o2.getEnclosingElement();
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diff changeset
118
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119 if (!ElementUtils.typeEquals(enclosing1Element.asType(), enclosing2Element.asType())) {
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120 throw new AssertionError();
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121 }
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diff changeset
122
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123 Object o1Binding = field(o1, "_binding");
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124 Object o2Binding = field(o2, "_binding");
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diff changeset
125
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126 int i1 = declarationOrder.indexOf(o1Binding);
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127 int i2 = declarationOrder.indexOf(o2Binding);
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128
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129 if (i1 == -1 || i2 == -1) {
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130 return 0;
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131 }
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132
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133 return i1 - i2;
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134 } catch (Exception e) {
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135 throw new RuntimeException(e);
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136 }
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137 }
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138 };
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139 return comparator;
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140 }
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141
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142 private static List<Object> lookupDeclarationOrder(TypeElement type) {
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143
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144 List<Object> declarationOrder;
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145 try {
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146 Object binding = field(type, "_binding");
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147 Class<?> sourceTypeBinding = Class.forName("org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding");
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148 Class<?> binaryTypeBinding = Class.forName("org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding");
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149
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150 declarationOrder = null;
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diff changeset
151 if (sourceTypeBinding.isAssignableFrom(binding.getClass())) {
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152 declarationOrder = findSourceTypeOrder(binding);
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153 } else if (binaryTypeBinding.isAssignableFrom(binding.getClass())) {
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diff changeset
154 declarationOrder = findBinaryTypeOrder(binding);
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155 }
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diff changeset
156 } catch (Exception e) {
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diff changeset
157 throw new RuntimeException(e);
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158 }
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diff changeset
159
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160 return declarationOrder;
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161 }
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diff changeset
162
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diff changeset
163 private static List<Object> findBinaryTypeOrder(Object binding) throws Exception {
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diff changeset
164 Object binaryType = lookupBinaryType(binding);
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165 final Object[] sortedMethods = (Object[]) method(binaryType, "getMethods");
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diff changeset
166
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diff changeset
167 List<Object> sortedElements = new ArrayList<>();
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diff changeset
168 if (sortedMethods != null) {
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diff changeset
169 sortedElements.addAll(Arrays.asList(sortedMethods));
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170 }
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diff changeset
171 final Object[] sortedFields = (Object[]) method(binaryType, "getFields");
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diff changeset
172 if (sortedFields != null) {
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diff changeset
173 sortedElements.addAll(Arrays.asList(sortedFields));
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174 }
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diff changeset
175 final Object[] sortedTypes = (Object[]) method(binaryType, "getMemberTypes", new Class<?>[0]);
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diff changeset
176 if (sortedTypes != null) {
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diff changeset
177 sortedElements.addAll(Arrays.asList(sortedTypes));
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178 }
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179
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180 Collections.sort(sortedElements, new Comparator<Object>() {
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181 public int compare(Object o1, Object o2) {
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diff changeset
182 try {
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diff changeset
183 int structOffset1 = (int) field(o1, "structOffset");
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184 int structOffset2 = (int) field(o2, "structOffset");
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185 return structOffset1 - structOffset2;
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diff changeset
186 } catch (Exception e) {
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diff changeset
187 throw new RuntimeException(e);
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188 }
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189 }
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diff changeset
190 });
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diff changeset
191
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diff changeset
192 Class<?> binaryMethod = Class.forName("org.eclipse.jdt.internal.compiler.env.IBinaryMethod");
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diff changeset
193 Class<?> binaryField = Class.forName("org.eclipse.jdt.internal.compiler.env.IBinaryField");
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diff changeset
194 Class<?> nestedType = Class.forName("org.eclipse.jdt.internal.compiler.env.IBinaryNestedType");
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diff changeset
195
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diff changeset
196 List<Object> bindings = new ArrayList<>();
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diff changeset
197 for (Object sortedElement : sortedElements) {
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diff changeset
198 Class<?> elementClass = sortedElement.getClass();
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diff changeset
199 if (binaryMethod.isAssignableFrom(elementClass)) {
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diff changeset
200 char[] selector = (char[]) method(sortedElement, "getSelector");
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 21951
diff changeset
201 Object[] foundBindings = (Object[]) method(binding, "getMethods", new Class<?>[]{char[].class}, selector);
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diff changeset
202 if (foundBindings == null || foundBindings.length == 0) {
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diff changeset
203 continue;
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diff changeset
204 } else if (foundBindings.length == 1) {
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diff changeset
205 bindings.add(foundBindings[0]);
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diff changeset
206 } else {
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diff changeset
207 char[] idescriptor = (char[]) method(sortedElement, "getMethodDescriptor");
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diff changeset
208 for (Object foundBinding : foundBindings) {
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diff changeset
209 char[] descriptor = (char[]) method(foundBinding, "signature");
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diff changeset
210 if (descriptor == null && idescriptor == null || Arrays.equals(descriptor, idescriptor)) {
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parents: 11188
diff changeset
211 bindings.add(foundBinding);
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parents: 11188
diff changeset
212 break;
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diff changeset
213 }
11188
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diff changeset
214 }
ae6b8ec920e2 Truffle-DSL: Added a hack to get around eclipse bug 300408. (https://bugs.eclipse.org/bugs/show_bug.cgi?id=300408)
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diff changeset
215 }
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diff changeset
216 } else if (binaryField.isAssignableFrom(elementClass)) {
f78eafd5ba9e Truffle-DSL: the processor compiler abstraction now supports declaration oder for enclosed elements of types for JDT which is not conforming to specification.
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diff changeset
217 char[] selector = (char[]) method(sortedElement, "getName");
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218 Object foundField = method(binding, "getField", new Class<?>[]{char[].class, boolean.class}, selector, true);
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219 if (foundField != null) {
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220 bindings.add(foundField);
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221 }
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222 } else if (nestedType.isAssignableFrom(elementClass)) {
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223 char[] selector = (char[]) method(sortedElement, "getSourceName");
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224 Object foundType = method(binding, "getMemberType", new Class<?>[]{char[].class}, selector);
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225 if (foundType != null) {
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226 bindings.add(foundType);
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227 }
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228 } else {
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229 throw new AssertionError("Unexpected encountered type " + elementClass);
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230 }
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231 }
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232
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233 return bindings;
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234 }
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235
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236 private static Object lookupBinaryType(Object binding) throws Exception {
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237 Object lookupEnvironment = field(binding, "environment");
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238 Object compoundClassName = field(binding, "compoundName");
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239 Object nameEnvironment = field(lookupEnvironment, "nameEnvironment");
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240 Object nameEnvironmentAnswer = method(nameEnvironment, "findType", new Class<?>[]{char[][].class}, compoundClassName);
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241 Object binaryType = method(nameEnvironmentAnswer, "getBinaryType", new Class<?>[0]);
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242 return binaryType;
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243 }
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244
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245 private static List<Object> findSourceTypeOrder(Object binding) throws Exception {
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246 Object referenceContext = field(field(binding, "scope"), "referenceContext");
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247
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248 TreeMap<Integer, Object> orderedBindings = new TreeMap<>();
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249
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250 collectSourceOrder(orderedBindings, referenceContext, "methods");
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251 collectSourceOrder(orderedBindings, referenceContext, "fields");
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252 collectSourceOrder(orderedBindings, referenceContext, "memberTypes");
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253
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254 return new ArrayList<>(orderedBindings.values());
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255 }
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256
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257 private static void collectSourceOrder(TreeMap<Integer, Object> orderedBindings, Object referenceContext, String fieldName) throws Exception {
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258 Object[] declarations = (Object[]) field(referenceContext, fieldName);
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259 if (declarations != null) {
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260 for (int i = 0; i < declarations.length; i++) {
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261 Integer declarationSourceStart = (Integer) field(declarations[i], "declarationSourceStart");
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262 orderedBindings.put(declarationSourceStart, field(declarations[i], "binding"));
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263 }
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264 }
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265 }
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266
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267 @Override
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268 public String getMethodBody(ProcessingEnvironment env, ExecutableElement method) {
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269 try {
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270
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271 char[] source = getSource(method);
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272 if (source == null) {
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273 return null;
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274 }
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275
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276 /*
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277 * AbstractMethodDeclaration decl =
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278 * ((MethodBinding)(((ElementImpl)method)._binding)).sourceMethod(); int bodyStart =
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279 * decl.bodyStart; int bodyEnd = decl.bodyEnd;
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280 */
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281 Object decl = method(field(method, "_binding"), "sourceMethod");
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282 int bodyStart = (int) field(decl, "bodyStart");
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283 int bodyEnd = (int) field(decl, "bodyEnd");
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284
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285 int length = bodyEnd - bodyStart;
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286 char[] target = new char[length];
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287 System.arraycopy(source, bodyStart, target, 0, length);
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288
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289 return new String(target);
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290 } catch (Exception e) {
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291 return ElementUtils.printException(e);
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292 }
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293 }
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294
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295 private static char[] getSource(Element element) throws Exception {
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296 /*
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297 * Binding binding = ((ElementImpl)element)._binding; char[] source = null; if (binding
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298 * instanceof MethodBinding) { source = ((MethodBinding)
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299 * binding).sourceMethod().compilationResult.getCompilationUnit().getContents(); } else if
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300 * (binding instanceof SourceTypeBinding) { source =
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301 * ((SourceTypeBinding)binding).scope.referenceContext
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302 * .compilationResult.compilationUnit.getContents(); } return source;
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303 */
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304
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305 Object binding = field(element, "_binding");
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306 Class<?> methodBindingClass = Class.forName("org.eclipse.jdt.internal.compiler.lookup.MethodBinding");
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307 Class<?> referenceBindingClass = Class.forName("org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding");
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308
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309 char[] source = null;
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310 if (methodBindingClass.isAssignableFrom(binding.getClass())) {
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311 Object sourceMethod = method(binding, "sourceMethod");
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312 if (sourceMethod == null) {
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313 return null;
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314 }
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315 source = (char[]) method(method(field(sourceMethod, "compilationResult"), "getCompilationUnit"), "getContents");
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316 } else if (referenceBindingClass.isAssignableFrom(binding.getClass())) {
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317 source = (char[]) method(field(field(field(field(binding, "scope"), "referenceContext"), "compilationResult"), "compilationUnit"), "getContents");
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318 }
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319 return source;
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320 }
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321
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322 @Override
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323 public String getHeaderComment(ProcessingEnvironment env, Element type) {
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324 try {
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325 char[] source = getSource(type);
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326 if (source == null) {
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327 return null;
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328 }
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329 return parseHeader(new String(source));
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330 } catch (Exception e) {
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331 return ElementUtils.printException(e);
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332 }
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333 }
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334
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335 }