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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/compiler/JDTCompiler.java @ 11188:ae6b8ec920e2

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Truffle-DSL: Added a hack to get around eclipse bug 300408. (https://bugs.eclipse.org/bugs/show_bug.cgi?id=300408)
author Christian Humer <christian.humer@gmail.com>
date Wed, 31 Jul 2013 15:04:13 +0200
parents 79041ab43660
children f78eafd5ba9e
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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
79041ab43660 Truffle-DSL: API-change: Renamed truffle.api.codegen to truffle.api.dsl for all projects and packages.
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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
79041ab43660 Truffle-DSL: API-change: Renamed truffle.api.codegen to truffle.api.dsl for all projects and packages.
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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
79041ab43660 Truffle-DSL: API-change: Renamed truffle.api.codegen to truffle.api.dsl for all projects and packages.
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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
79041ab43660 Truffle-DSL: API-change: Renamed truffle.api.codegen to truffle.api.dsl for all projects and packages.
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16 * 2 along with this work; if not, write to the Free Software Foundation,
79041ab43660 Truffle-DSL: API-change: Renamed truffle.api.codegen to truffle.api.dsl for all projects and packages.
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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.compiler;
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24
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25 import java.util.*;
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26
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27 import javax.annotation.processing.*;
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28 import javax.lang.model.element.*;
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30 import com.oracle.truffle.dsl.processor.*;
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32 public class JDTCompiler extends AbstractCompiler {
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33
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34 public static boolean isValidElement(Element currentElement) {
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35 try {
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36 Class<?> elementClass = Class.forName("org.eclipse.jdt.internal.compiler.apt.model.ElementImpl");
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37 return elementClass.isAssignableFrom(currentElement.getClass());
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38 } catch (ClassNotFoundException e) {
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39 return false;
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40 }
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41 }
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42
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43 public List<? extends Element> getEnclosedElementsDeclarationOrder(TypeElement type) {
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44 try {
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45 Object binding = field(type, "_binding");
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46
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47 Class<?> sourceTypeBinding = Class.forName("org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding");
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48
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49 final List<Object> declarationOrder;
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50 if (sourceTypeBinding.isAssignableFrom(binding.getClass())) {
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51 declarationOrder = findSourceOrder(binding);
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52 } else {
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53 return null;
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54 }
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55
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56 List<Element> enclosedElements = new ArrayList<>(type.getEnclosedElements());
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57 Collections.sort(enclosedElements, new Comparator<Element>() {
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58
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59 public int compare(Element o1, Element o2) {
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60 try {
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61 Object o1Binding = field(o1, "_binding");
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62 Object o2Binding = field(o2, "_binding");
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63
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64 int i1 = declarationOrder.indexOf(o1Binding);
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65 int i2 = declarationOrder.indexOf(o2Binding);
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66
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67 return i1 - i2;
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68 } catch (Exception e) {
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69 return 0;
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70 }
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71 }
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72
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73 });
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74 return enclosedElements;
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75 } catch (Exception e) {
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76 return null;
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77 }
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78 }
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79
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80 private static List<Object> findSourceOrder(Object binding) throws Exception {
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81 Object referenceContext = field(field(binding, "scope"), "referenceContext");
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82
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83 TreeMap<Integer, Object> orderedBindings = new TreeMap<>();
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84
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85 collectSourceOrder(orderedBindings, referenceContext, "methods");
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86 collectSourceOrder(orderedBindings, referenceContext, "fields");
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87 collectSourceOrder(orderedBindings, referenceContext, "memberTypes");
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88
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89 return new ArrayList<>(orderedBindings.values());
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90 }
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91
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92 private static void collectSourceOrder(TreeMap<Integer, Object> orderedBindings, Object referenceContext, String fieldName) throws Exception {
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93 Object[] declarations = (Object[]) field(referenceContext, fieldName);
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94 if (declarations != null) {
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95 for (int i = 0; i < declarations.length; i++) {
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96 Integer declarationSourceStart = (Integer) field(declarations[i], "declarationSourceStart");
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97 orderedBindings.put(declarationSourceStart, field(declarations[i], "binding"));
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98 }
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99 }
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100 }
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101
10597
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102 @Override
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103 public String getMethodBody(ProcessingEnvironment env, ExecutableElement method) {
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104 try {
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105
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106 char[] source = getSource(method);
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107 if (source == null) {
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108 return null;
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109 }
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110
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111 /*
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112 * AbstractMethodDeclaration decl =
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113 * ((MethodBinding)(((ElementImpl)method)._binding)).sourceMethod(); int bodyStart =
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114 * decl.bodyStart; int bodyEnd = decl.bodyEnd;
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115 */
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116 Object decl = method(field(method, "_binding"), "sourceMethod");
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117 int bodyStart = (int) field(decl, "bodyStart");
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118 int bodyEnd = (int) field(decl, "bodyEnd");
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119
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120 int length = bodyEnd - bodyStart;
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121 char[] target = new char[length];
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122 System.arraycopy(source, bodyStart, target, 0, length);
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123
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124 return new String(target);
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125 } catch (Exception e) {
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126 return Utils.printException(e);
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127 }
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128 }
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129
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130 private static char[] getSource(Element element) throws Exception {
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131 /*
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132 * Binding binding = ((ElementImpl)element)._binding; char[] source = null; if (binding
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133 * instanceof MethodBinding) { source = ((MethodBinding)
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134 * binding).sourceMethod().compilationResult.getCompilationUnit().getContents(); } else if
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135 * (binding instanceof SourceTypeBinding) { source =
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136 * ((SourceTypeBinding)binding).scope.referenceContext
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137 * .compilationResult.compilationUnit.getContents(); } return source;
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138 */
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139
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140 Object binding = field(element, "_binding");
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141 Class<?> methodBindingClass = Class.forName("org.eclipse.jdt.internal.compiler.lookup.MethodBinding");
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142 Class<?> referenceBindingClass = Class.forName("org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding");
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143
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144 char[] source = null;
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145 if (methodBindingClass.isAssignableFrom(binding.getClass())) {
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146 Object sourceMethod = method(binding, "sourceMethod");
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147 if (sourceMethod == null) {
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148 return null;
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149 }
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150 source = (char[]) method(method(field(sourceMethod, "compilationResult"), "getCompilationUnit"), "getContents");
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151 } else if (referenceBindingClass.isAssignableFrom(binding.getClass())) {
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152 source = (char[]) method(field(field(field(field(binding, "scope"), "referenceContext"), "compilationResult"), "compilationUnit"), "getContents");
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153 }
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154 return source;
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155 }
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156
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157 @Override
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158 public String getHeaderComment(ProcessingEnvironment env, Element type) {
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159 try {
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160 char[] source = getSource(type);
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161 if (source == null) {
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162 return null;
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163 }
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164 return parseHeader(new String(source));
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165 } catch (Exception e) {
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166 return Utils.printException(e);
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167 }
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168 }
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169
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170 }