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annotate graal/com.oracle.truffle.codegen.processor/src/com/oracle/truffle/codegen/processor/template/TemplateParser.java @ 7291:a748e4d44694

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Truffle API to specify type-specalized Node classes; annotation processor for automatic code generation of the type-specialized Node classes during the build process
author Christian Humer <christian.humer@gmail.com>
date Fri, 21 Dec 2012 10:44:31 -0800
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children 6343a09b2ec1
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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.codegen.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.lang.model.util.*;
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29
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30 import com.oracle.truffle.codegen.processor.*;
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31 import com.oracle.truffle.codegen.processor.api.element.*;
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32 import com.oracle.truffle.codegen.processor.ext.*;
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33
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34 public abstract class TemplateParser<M extends Template> extends AbstractParser<M> {
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35
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36 private final ExtensionParser extensionParser;
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37
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38 public TemplateParser(ProcessorContext c) {
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39 super(c);
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40 extensionParser = new ExtensionParser(c);
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41 }
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42
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43 public ExtensionParser getExtensionParser() {
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44 return extensionParser;
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45 }
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46
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47 protected boolean verifyExclusiveMethodAnnotation(TypeElement type, Class<?> ... annotationTypes) {
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48 boolean valid = true;
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49 List<ExecutableElement> methods = ElementFilter.methodsIn(type.getEnclosedElements());
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50 for (ExecutableElement method : methods) {
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51 List<AnnotationMirror> foundAnnotations = new ArrayList<>();
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52 for (int i = 0; i < annotationTypes.length; i++) {
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53 Class<?> annotationType = annotationTypes[i];
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54 AnnotationMirror mirror = Utils.findAnnotationMirror(context.getEnvironment(), method, annotationType);
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55 if (mirror != null) {
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56 foundAnnotations.add(mirror);
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57 }
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58 }
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59 if (foundAnnotations.size() > 1) {
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60 List<String> annotationNames = new ArrayList<>();
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61 for (AnnotationMirror mirror : foundAnnotations) {
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62 annotationNames.add("@" + Utils.getSimpleName(mirror.getAnnotationType()));
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63 }
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64
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65 for (AnnotationMirror mirror : foundAnnotations) {
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66 context.getLog().error(method, mirror, "Non exclusive usage of annotations %s.", annotationNames);
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67 }
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68 valid = false;
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69 }
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70 }
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71 return valid;
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72 }
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73
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74 protected boolean verifyTemplateType(TypeElement template, AnnotationMirror annotation) {
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75 // annotation type on class path!?
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76 boolean valid = true;
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77 TypeElement annotationTypeElement = processingEnv.getElementUtils().getTypeElement(getAnnotationType().getCanonicalName());
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78 if (annotationTypeElement == null) {
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79 log.error(template, annotation, "Required class " + getAnnotationType().getName() + " is not on the classpath.");
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80 valid = false;
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81 }
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82 if (template.getModifiers().contains(Modifier.PRIVATE)) {
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83 log.error(template, annotation, "The annotated class must have at least package protected visibility.");
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84 valid = false;
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85 }
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86
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87 if (template.getModifiers().contains(Modifier.FINAL)) {
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88 log.error(template, annotation, "The annotated class must not be final.");
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89 valid = false;
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90 }
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91
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92 return valid;
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93 }
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94
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95 protected <E extends TemplateMethod> List<E> parseMethods(Template template, TemplateMethodParser<E> parser) {
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96 TypeElement type = template.getTemplateType();
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97
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98 List<ExecutableElement> methods = new ArrayList<>();
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99 methods.addAll(ElementFilter.methodsIn(type.getEnclosedElements()));
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100 if (template.getExtensionElements() != null) {
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101 for (WritableElement e : template.getExtensionElements()) {
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102 if (e instanceof ExecutableElement) {
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103 methods.add((ExecutableElement) e);
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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 List<E> parsedMethods = new ArrayList<>();
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109 boolean valid = true;
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110 for (ExecutableElement method : methods) {
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111 AnnotationMirror mirror = Utils.findAnnotationMirror(processingEnv, method, parser.getAnnotationType());
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112 if (mirror != null) {
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113 if (method.getModifiers().contains(Modifier.PRIVATE)) {
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114 log.error(method, "Methods annotated with @%s must not be private.", parser.getAnnotationType().getSimpleName());
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115 valid = false;
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116 continue;
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117 }
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118 E parsedMethod = parser.parse(method, mirror, template);
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119 if (parsedMethod != null) {
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120 parsedMethods.add(parsedMethod);
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121 } else {
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122 valid = false;
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123 }
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124 }
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125 }
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126 if (!valid) {
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127 return null;
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128 }
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129 return parsedMethods;
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130 }
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131
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132
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133 }