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annotate truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/parser/TemplateMethodParser.java @ 22157:dc83cc1f94f2

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Using fully qualified imports
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 16 Sep 2015 11:33:22 +0200
parents 9c8c0937da41
children
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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.parser;
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24
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25 import com.oracle.truffle.dsl.processor.ProcessorContext;
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26 import com.oracle.truffle.dsl.processor.java.ElementUtils;
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27 import com.oracle.truffle.dsl.processor.model.MethodSpec;
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28 import com.oracle.truffle.dsl.processor.model.Template;
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29 import com.oracle.truffle.dsl.processor.model.TemplateMethod;
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30 import com.oracle.truffle.dsl.processor.model.TypeSystemData;
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31 import java.lang.annotation.Annotation;
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32 import java.util.ArrayList;
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33 import java.util.Collections;
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34 import java.util.List;
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35 import javax.lang.model.element.AnnotationMirror;
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36 import javax.lang.model.element.Element;
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37 import javax.lang.model.element.ExecutableElement;
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38 import javax.lang.model.element.Modifier;
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39 import javax.lang.model.element.VariableElement;
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40 import javax.lang.model.type.TypeMirror;
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41 import javax.lang.model.util.ElementFilter;
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42
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43 public abstract class TemplateMethodParser<T extends Template, E extends TemplateMethod> {
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44
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45 protected final T template;
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46 private final ProcessorContext context;
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47 private final MethodSpecParser parser;
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48
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49 private boolean parseNullOnError;
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50
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51 public TemplateMethodParser(ProcessorContext context, T template) {
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52 this.template = template;
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53 this.context = context;
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54 this.parser = new MethodSpecParser(template);
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55 }
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56
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57 public void setParseNullOnError(boolean parseNullOnError) {
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58 this.parseNullOnError = parseNullOnError;
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59 }
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60
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61 public boolean isParseNullOnError() {
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62 return parseNullOnError;
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63 }
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64
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65 public MethodSpecParser getParser() {
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66 return parser;
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67 }
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68
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69 public ProcessorContext getContext() {
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70 return context;
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71 }
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72
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73 public TypeSystemData getTypeSystem() {
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74 return template.getTypeSystem();
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75 }
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76
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77 public abstract MethodSpec createSpecification(ExecutableElement method, AnnotationMirror mirror);
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78
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79 public abstract E create(TemplateMethod method, boolean invalid);
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80
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81 public abstract boolean isParsable(ExecutableElement method);
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82
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83 public Class<? extends Annotation> getAnnotationType() {
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84 return null;
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85 }
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86
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87 public final List<E> parse(List<? extends Element> elements) {
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88 List<ExecutableElement> methods = new ArrayList<>();
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89 methods.addAll(ElementFilter.methodsIn(elements));
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90
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91 List<E> parsedMethods = new ArrayList<>();
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92 boolean valid = true;
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93 int naturalOrder = 0;
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94 for (ExecutableElement method : methods) {
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95 if (!isParsable(method)) {
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96 continue;
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97 }
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98
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99 Class<? extends Annotation> annotationType = getAnnotationType();
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100 AnnotationMirror mirror = null;
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101 if (annotationType != null) {
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102 mirror = ElementUtils.findAnnotationMirror(getContext().getEnvironment(), method, annotationType);
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103 }
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104
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105 E parsedMethod = parse(naturalOrder, method, mirror);
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106
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107 if (method.getModifiers().contains(Modifier.PRIVATE) && parser.isEmitErrors()) {
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108 parsedMethod.addError("Method annotated with @%s must not be private.", getAnnotationType().getSimpleName());
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109 parsedMethods.add(parsedMethod);
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110 valid = false;
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111 continue;
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112 }
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113
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114 if (parsedMethod != null) {
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115 parsedMethods.add(parsedMethod);
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116 } else {
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117 valid = false;
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118 }
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119 naturalOrder++;
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120 }
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121 Collections.sort(parsedMethods);
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122
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123 if (!valid && isParseNullOnError()) {
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124 return null;
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125 }
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126 return parsedMethods;
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127 }
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128
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129 private E parse(int naturalOrder, ExecutableElement method, AnnotationMirror annotation) {
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130 MethodSpec methodSpecification = createSpecification(method, annotation);
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131 if (methodSpecification == null) {
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132 return null;
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133 }
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134
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135 TemplateMethod templateMethod = parser.parse(methodSpecification, method, annotation, naturalOrder);
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136 if (templateMethod != null) {
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137 return create(templateMethod, templateMethod.hasErrors());
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138 }
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139 return null;
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140 }
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141
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142 public final E create(String id, int naturalOrder, ExecutableElement methodMetadata, AnnotationMirror mirror, TypeMirror returnType, List<VariableElement> parameterTypes) {
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143 TemplateMethod method = parser.parseImpl(createSpecification(methodMetadata, mirror), naturalOrder, id, methodMetadata, mirror, returnType, parameterTypes);
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144 if (method != null) {
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145 return create(method, method.hasErrors());
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146 }
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147 return null;
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148 }
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149 }