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annotate graal/com.oracle.graal.options/src/com/oracle/graal/options/OptionProcessor.java @ 14763:a6c1c3eb20c4

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transition to JDK8 - introduce support for more than one JDK in mx - update version in annotiationprocessors - update project definitions (truffle api is not part of the transition) - fix style errors
author Doug Simon <doug.simon@oracle.com>
date Wed, 26 Mar 2014 14:34:08 +0100
parents 2e35f6eb8684
children 33eee38d70a3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2013, 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.graal.options;
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24
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25 import java.io.*;
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26 import java.util.*;
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27
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28 import javax.annotation.processing.*;
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29 import javax.lang.model.*;
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30 import javax.lang.model.element.*;
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31 import javax.lang.model.type.*;
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32 import javax.lang.model.util.*;
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33 import javax.tools.Diagnostic.Kind;
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34 import javax.tools.*;
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35
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36 /**
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37 * Processes static fields annotated with {@link Option}. An {@link Options} service is generated
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38 * for each top level class containing at least one such field. These service objects can be
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39 * retrieved as follows:
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40 *
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41 * <pre>
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42 * ServiceLoader&lt;Options&gt; sl = ServiceLoader.loadInstalled(Options.class);
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43 * for (OptionDescriptor desc : sl) {
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44 * // use desc
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45 * }
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46 * </pre>
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47 */
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48 @SupportedAnnotationTypes({"com.oracle.graal.options.Option"})
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49 public class OptionProcessor extends AbstractProcessor {
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50
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51 @Override
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52 public SourceVersion getSupportedSourceVersion() {
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53 return SourceVersion.latest();
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54 }
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55
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56 private final Set<Element> processed = new HashSet<>();
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57
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58 private void processElement(Element element, OptionsInfo info) {
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59
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60 if (!element.getModifiers().contains(Modifier.STATIC)) {
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61 processingEnv.getMessager().printMessage(Kind.ERROR, "Option field must be static", element);
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62 return;
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63 }
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64
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65 Option annotation = element.getAnnotation(Option.class);
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66 assert annotation != null;
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67 assert element instanceof VariableElement;
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68 assert element.getKind() == ElementKind.FIELD;
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69 VariableElement field = (VariableElement) element;
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70 String fieldName = field.getSimpleName().toString();
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71
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72 Elements elements = processingEnv.getElementUtils();
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73 Types types = processingEnv.getTypeUtils();
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74
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75 TypeMirror fieldType = field.asType();
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76 if (fieldType.getKind() != TypeKind.DECLARED) {
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77 processingEnv.getMessager().printMessage(Kind.ERROR, "Option field must be of type " + OptionValue.class.getName(), element);
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78 return;
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79 }
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80 DeclaredType declaredFieldType = (DeclaredType) fieldType;
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81
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82 TypeMirror optionValueType = elements.getTypeElement(OptionValue.class.getName()).asType();
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83 if (!types.isSubtype(fieldType, types.erasure(optionValueType))) {
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84 String msg = String.format("Option field type %s is not a subclass of %s", fieldType, optionValueType);
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85 processingEnv.getMessager().printMessage(Kind.ERROR, msg, element);
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86 return;
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87 }
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88
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89 if (!field.getModifiers().contains(Modifier.STATIC)) {
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90 processingEnv.getMessager().printMessage(Kind.ERROR, "Option field must be static", element);
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91 return;
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92 }
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93
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94 String help = annotation.help();
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95 if (help.length() != 0) {
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96 char firstChar = help.charAt(0);
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97 if (!Character.isUpperCase(firstChar)) {
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98 processingEnv.getMessager().printMessage(Kind.ERROR, "Option help text must start with upper case letter", element);
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99 return;
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100 }
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101 }
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102
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103 String optionName = annotation.name();
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104 if (optionName.equals("")) {
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105 optionName = fieldName;
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106 }
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107
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108 String optionType = declaredFieldType.getTypeArguments().get(0).toString();
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109 if (optionType.startsWith("java.lang.")) {
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110 optionType = optionType.substring("java.lang.".length());
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111 }
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112
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113 Element enclosing = element.getEnclosingElement();
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114 String declaringClass = "";
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115 String separator = "";
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116 Set<Element> originatingElementsList = info.originatingElements;
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117 originatingElementsList.add(field);
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118 while (enclosing != null) {
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119 if (enclosing.getKind() == ElementKind.CLASS || enclosing.getKind() == ElementKind.INTERFACE) {
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120 if (enclosing.getModifiers().contains(Modifier.PRIVATE)) {
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121 String msg = String.format("Option field cannot be declared in a private %s %s", enclosing.getKind().name().toLowerCase(), enclosing);
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122 processingEnv.getMessager().printMessage(Kind.ERROR, msg, element);
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123 return;
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124 }
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125 originatingElementsList.add(enclosing);
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126 declaringClass = enclosing.getSimpleName() + separator + declaringClass;
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127 separator = ".";
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128 } else {
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129 assert enclosing.getKind() == ElementKind.PACKAGE;
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130 }
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131 enclosing = enclosing.getEnclosingElement();
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132 }
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133
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134 info.options.add(new OptionInfo(optionName, help, optionType, declaringClass, field));
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135 }
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136
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137 private void createFiles(OptionsInfo info) {
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Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
138 String pkg = ((PackageElement) info.topDeclaringType.getEnclosingElement()).getQualifiedName().toString();
9986
4f542ceb5fed added VerifyHotSpotOptionsPhase to ensure that global state is not initialized from options prior to command line parsing
Doug Simon <doug.simon@oracle.com>
parents: 9937
diff changeset
139 Name topDeclaringClass = info.topDeclaringType.getSimpleName();
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
140
9986
4f542ceb5fed added VerifyHotSpotOptionsPhase to ensure that global state is not initialized from options prior to command line parsing
Doug Simon <doug.simon@oracle.com>
parents: 9937
diff changeset
141 String optionsClassName = topDeclaringClass + "_" + Options.class.getSimpleName();
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
142 Element[] originatingElements = info.originatingElements.toArray(new Element[info.originatingElements.size()]);
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
143
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
144 Filer filer = processingEnv.getFiler();
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
145 try (PrintWriter out = createSourceFile(pkg, optionsClassName, filer, originatingElements)) {
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
146
9901
4fcd38b13eb1 disabled emitting and checking of copyright header in files generated by OptionProcessor
Doug Simon <doug.simon@oracle.com>
parents: 9865
diff changeset
147 out.println("// CheckStyle: stop header check");
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
148 out.println("// GENERATED CONTENT - DO NOT EDIT");
9986
4f542ceb5fed added VerifyHotSpotOptionsPhase to ensure that global state is not initialized from options prior to command line parsing
Doug Simon <doug.simon@oracle.com>
parents: 9937
diff changeset
149 out.println("// Source: " + topDeclaringClass + ".java");
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
150 out.println("package " + pkg + ";");
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
151 out.println("");
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
152 out.println("import java.util.*;");
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
153 out.println("import " + Options.class.getPackage().getName() + ".*;");
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
154 out.println("");
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
155 out.println("public class " + optionsClassName + " implements " + Options.class.getSimpleName() + " {");
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
156 out.println(" @Override");
9986
4f542ceb5fed added VerifyHotSpotOptionsPhase to ensure that global state is not initialized from options prior to command line parsing
Doug Simon <doug.simon@oracle.com>
parents: 9937
diff changeset
157 String desc = OptionDescriptor.class.getSimpleName();
4f542ceb5fed added VerifyHotSpotOptionsPhase to ensure that global state is not initialized from options prior to command line parsing
Doug Simon <doug.simon@oracle.com>
parents: 9937
diff changeset
158 out.println(" public Iterator<" + desc + "> iterator() {");
11363
b332bfd012a4 added suppression filter so that long help messages for Options can be supported without triggering Checkstyle errors in generated sources
Doug Simon <doug.simon@oracle.com>
parents: 9986
diff changeset
159 out.println(" // CheckStyle: stop line length check");
9986
4f542ceb5fed added VerifyHotSpotOptionsPhase to ensure that global state is not initialized from options prior to command line parsing
Doug Simon <doug.simon@oracle.com>
parents: 9937
diff changeset
160 out.println(" List<" + desc + "> options = Arrays.asList(");
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
161
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
162 boolean needPrivateFieldAccessor = false;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
163 int i = 0;
13944
911e540a2116 Sort options alphabetically so that diffs do not show false positives
Christian Wimmer <christian.wimmer@oracle.com>
parents: 11378
diff changeset
164 Collections.sort(info.options);
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
165 for (OptionInfo option : info.options) {
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
166 String optionValue;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
167 if (option.field.getModifiers().contains(Modifier.PRIVATE)) {
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
168 needPrivateFieldAccessor = true;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
169 optionValue = "field(" + option.declaringClass + ".class, \"" + option.field.getSimpleName() + "\")";
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
170 } else {
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
171 optionValue = option.declaringClass + "." + option.field.getSimpleName();
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
172 }
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
173 String name = option.name;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
174 String type = option.type;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
175 String help = option.help;
9986
4f542ceb5fed added VerifyHotSpotOptionsPhase to ensure that global state is not initialized from options prior to command line parsing
Doug Simon <doug.simon@oracle.com>
parents: 9937
diff changeset
176 String declaringClass = option.declaringClass;
4f542ceb5fed added VerifyHotSpotOptionsPhase to ensure that global state is not initialized from options prior to command line parsing
Doug Simon <doug.simon@oracle.com>
parents: 9937
diff changeset
177 Name fieldName = option.field.getSimpleName();
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
178 String comma = i == info.options.size() - 1 ? "" : ",";
14596
2e35f6eb8684 Fixed option processor to always produce unix line feeds which led to checkstyle warnings on windows.
Christian Humer <christian.humer@gmail.com>
parents: 14157
diff changeset
179 out.printf(" new %s(\"%s\", %s.class, \"%s\", %s.class, \"%s\", %s)%s\n", desc, name, type, help, declaringClass, fieldName, optionValue, comma);
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
180 i++;
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
181 }
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
182 out.println(" );");
11363
b332bfd012a4 added suppression filter so that long help messages for Options can be supported without triggering Checkstyle errors in generated sources
Doug Simon <doug.simon@oracle.com>
parents: 9986
diff changeset
183 out.println(" // CheckStyle: resume line length check");
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
184 out.println(" return options.iterator();");
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
185 out.println(" }");
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
186 if (needPrivateFieldAccessor) {
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
187 out.println(" private static " + OptionValue.class.getSimpleName() + " field(Class<?> declaringClass, String fieldName) {");
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
188 out.println(" try {");
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
189 out.println(" java.lang.reflect.Field field = declaringClass.getDeclaredField(fieldName);");
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
190 out.println(" field.setAccessible(true);");
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
191 out.println(" return (" + OptionValue.class.getSimpleName() + ") field.get(null);");
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
192 out.println(" } catch (Exception e) {");
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
193 out.println(" throw (InternalError) new InternalError().initCause(e);");
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
194 out.println(" }");
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
195 out.println(" }");
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
196 }
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
197 out.println("}");
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
198 }
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
199
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
200 try {
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
201 createProviderFile(pkg, optionsClassName, originatingElements);
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
202 } catch (IOException e) {
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
203 processingEnv.getMessager().printMessage(Kind.ERROR, e.getMessage(), info.topDeclaringType);
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
204 }
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
205 }
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
206
9865
9006bc30a951 add all enclosing elements of an annotated field as originating elements
Doug Simon <doug.simon@oracle.com>
parents: 9849
diff changeset
207 private void createProviderFile(String pkg, String providerClassName, Element... originatingElements) throws IOException {
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
208 String filename = "META-INF/providers/" + pkg + "." + providerClassName;
9865
9006bc30a951 add all enclosing elements of an annotated field as originating elements
Doug Simon <doug.simon@oracle.com>
parents: 9849
diff changeset
209 FileObject file = processingEnv.getFiler().createResource(StandardLocation.CLASS_OUTPUT, "", filename, originatingElements);
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
210 PrintWriter writer = new PrintWriter(new OutputStreamWriter(file.openOutputStream(), "UTF-8"));
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
211 writer.println(Options.class.getName());
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
212 writer.close();
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
213 }
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
214
9865
9006bc30a951 add all enclosing elements of an annotated field as originating elements
Doug Simon <doug.simon@oracle.com>
parents: 9849
diff changeset
215 protected PrintWriter createSourceFile(String pkg, String relativeName, Filer filer, Element... originatingElements) {
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
216 try {
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
217 // Ensure Unix line endings to comply with Graal code style guide checked by Checkstyle
9865
9006bc30a951 add all enclosing elements of an annotated field as originating elements
Doug Simon <doug.simon@oracle.com>
parents: 9849
diff changeset
218 JavaFileObject sourceFile = filer.createSourceFile(pkg + "." + relativeName, originatingElements);
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
219 return new PrintWriter(sourceFile.openWriter()) {
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
220
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
221 @Override
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
222 public void println() {
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
223 print("\n");
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
224 }
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
225 };
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
226 } catch (IOException e) {
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
227 throw new RuntimeException(e);
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
228 }
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
229 }
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
230
13944
911e540a2116 Sort options alphabetically so that diffs do not show false positives
Christian Wimmer <christian.wimmer@oracle.com>
parents: 11378
diff changeset
231 static class OptionInfo implements Comparable<OptionInfo> {
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
232
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
233 final String name;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
234 final String help;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
235 final String type;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
236 final String declaringClass;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
237 final VariableElement field;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
238
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
239 public OptionInfo(String name, String help, String type, String declaringClass, VariableElement field) {
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
240 this.name = name;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
241 this.help = help;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
242 this.type = type;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
243 this.declaringClass = declaringClass;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
244 this.field = field;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
245 }
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
246
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
247 @Override
13944
911e540a2116 Sort options alphabetically so that diffs do not show false positives
Christian Wimmer <christian.wimmer@oracle.com>
parents: 11378
diff changeset
248 public int compareTo(OptionInfo other) {
911e540a2116 Sort options alphabetically so that diffs do not show false positives
Christian Wimmer <christian.wimmer@oracle.com>
parents: 11378
diff changeset
249 return name.compareTo(other.name);
911e540a2116 Sort options alphabetically so that diffs do not show false positives
Christian Wimmer <christian.wimmer@oracle.com>
parents: 11378
diff changeset
250 }
911e540a2116 Sort options alphabetically so that diffs do not show false positives
Christian Wimmer <christian.wimmer@oracle.com>
parents: 11378
diff changeset
251
911e540a2116 Sort options alphabetically so that diffs do not show false positives
Christian Wimmer <christian.wimmer@oracle.com>
parents: 11378
diff changeset
252 @Override
9919
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
253 public String toString() {
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
254 return declaringClass + "." + field;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
255 }
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
256 }
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
257
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
258 static class OptionsInfo {
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
259
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
260 final Element topDeclaringType;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
261 final List<OptionInfo> options = new ArrayList<>();
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
262 final Set<Element> originatingElements = new HashSet<>();
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
263
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
264 public OptionsInfo(Element topDeclaringType) {
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
265 this.topDeclaringType = topDeclaringType;
af909f4b80a9 options are grouped per top level class/interface when accessed via the service mechanism
Doug Simon <doug.simon@oracle.com>
parents: 9901
diff changeset
266 }
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267 }
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268
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269 private static Element topDeclaringType(Element element) {
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270 Element enclosing = element.getEnclosingElement();
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271 if (enclosing == null || enclosing.getKind() == ElementKind.PACKAGE) {
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272 assert element.getKind() == ElementKind.CLASS || element.getKind() == ElementKind.INTERFACE;
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273 return element;
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274 }
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275 return topDeclaringType(enclosing);
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276 }
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277
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278 @Override
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279 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
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280 if (roundEnv.processingOver()) {
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281 return true;
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282 }
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283
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284 Map<Element, OptionsInfo> map = new HashMap<>();
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285 for (Element element : roundEnv.getElementsAnnotatedWith(Option.class)) {
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286 if (!processed.contains(element)) {
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287 processed.add(element);
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288 Element topDeclaringType = topDeclaringType(element);
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289 OptionsInfo options = map.get(topDeclaringType);
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290 if (options == null) {
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291 options = new OptionsInfo(topDeclaringType);
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292 map.put(topDeclaringType, options);
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293 }
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294 processElement(element, options);
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295 }
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296 }
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297
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298 boolean ok = true;
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299 Map<String, OptionInfo> uniqueness = new HashMap<>();
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300 for (OptionsInfo info : map.values()) {
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301 for (OptionInfo option : info.options) {
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302 OptionInfo conflict = uniqueness.put(option.name, option);
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303 if (conflict != null) {
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304 processingEnv.getMessager().printMessage(Kind.ERROR, "Duplicate option names for " + option + " and " + conflict, option.field);
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305 ok = false;
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306 }
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307 }
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308 }
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309
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310 if (ok) {
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311 for (OptionsInfo info : map.values()) {
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312 createFiles(info);
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313 }
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314 }
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315
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316 return true;
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317 }
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318 }