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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/compiler/JavaCCompiler.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 288c23143d47
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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.compiler;
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25 import java.util.*;
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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 JavaCCompiler 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("com.sun.tools.javac.code.Symbol");
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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 return type.getEnclosedElements();
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45 }
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46
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47 private static final Class[] getTreeAndTopLevelSignature = new Class[]{Element.class, AnnotationMirror.class, AnnotationValue.class};
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48 private static final Class[] getCharContentSignature = new Class[]{boolean.class};
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49
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50 @Override
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51 public String getMethodBody(ProcessingEnvironment env, ExecutableElement method) {
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52 try {
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53 /*
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54 * if (false) { Pair<JCTree, JCCompilationUnit> treeAndTopLevel = ((JavacElements)
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55 * env.getElementUtils()).getTreeAndTopLevel(method, null, null); JCBlock block =
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56 * ((JCMethodDecl) treeAndTopLevel.fst).getBody(); int startPos = block.pos; int endPos
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57 * = block.endpos; String methodBody =
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58 * treeAndTopLevel.snd.getSourceFile().getCharContent(true).subSequence(startPos + 1,
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59 * endPos).toString(); return methodBody; }
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60 */
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61
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62 Object treeAndTopLevel = getTreeAndTopLevel(env, method);
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63 Object block = method(field(treeAndTopLevel, "fst"), "getBody");
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64 int startPos = (int) field(block, "pos");
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65 int endPos = (int) field(block, "endpos");
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66 return getContent(treeAndTopLevel).subSequence(startPos + 1, endPos).toString();
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67 } catch (Exception e) {
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68 return Utils.printException(e);
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69 }
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70 }
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71
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72 private static CharSequence getContent(Object treeAndTopLevel) throws Exception {
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73 /*
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74 * CharSequence content = treeAndTopLevel.snd.getSourceFile().getCharContent(true);
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75 */
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76 return (CharSequence) method(method(field(treeAndTopLevel, "snd"), "getSourceFile"), "getCharContent", getCharContentSignature, true);
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77 }
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78
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79 private static Object getTreeAndTopLevel(ProcessingEnvironment env, Element element) throws Exception {
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80 /*
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81 * Pair<JCTree, JCCompilationUnit> treeAndTopLevel = ((JavacElements)
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82 * env.getElementUtils()).getTreeAndTopLevel(method, null, null);
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83 */
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84 return method(method(env, "getElementUtils"), "getTreeAndTopLevel", getTreeAndTopLevelSignature, element, null, null);
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85 }
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86
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87 @Override
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88 public String getHeaderComment(ProcessingEnvironment env, Element type) {
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89 try {
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90 String content = getContent(getTreeAndTopLevel(env, type)).toString();
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91 return parseHeader(content);
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92 } catch (Exception e) {
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93 return Utils.printException(e);
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94 }
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95 }
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96
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97 }