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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. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package com.sun.tools.doclint; |
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27 |
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28 import java.io.File; |
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29 import java.io.IOException; |
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30 import java.io.PrintWriter; |
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31 import java.util.ArrayList; |
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32 import java.util.List; |
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33 |
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34 import javax.lang.model.element.Name; |
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35 import javax.tools.StandardLocation; |
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36 |
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37 import com.sun.source.doctree.DocCommentTree; |
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38 import com.sun.source.tree.ClassTree; |
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39 import com.sun.source.tree.CompilationUnitTree; |
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40 import com.sun.source.tree.MethodTree; |
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41 import com.sun.source.tree.Tree; |
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42 import com.sun.source.tree.VariableTree; |
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43 import com.sun.source.util.JavacTask; |
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44 import com.sun.source.util.Plugin; |
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45 import com.sun.source.util.TaskEvent; |
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46 import com.sun.source.util.TaskListener; |
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47 import com.sun.source.util.TreePath; |
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48 import com.sun.source.util.TreePathScanner; |
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49 import com.sun.tools.javac.api.JavacTaskImpl; |
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50 import com.sun.tools.javac.api.JavacTool; |
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51 import com.sun.tools.javac.file.JavacFileManager; |
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52 import com.sun.tools.javac.main.JavaCompiler; |
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53 import com.sun.tools.javac.util.Context; |
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54 |
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55 /** |
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56 * Multi-function entry point for the doc check utility. |
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57 * |
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58 * This class can be invoked in the following ways: |
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59 * <ul> |
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60 * <li>From the command line |
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61 * <li>From javac, as a plugin |
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62 * <li>Directly, via a simple API |
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63 * </ul> |
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64 * |
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65 * <p><b>This is NOT part of any supported API. |
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66 * If you write code that depends on this, you do so at your own |
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67 * risk. This code and its internal interfaces are subject to change |
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68 * or deletion without notice.</b></p> |
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69 */ |
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70 public class DocLint implements Plugin { |
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71 |
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72 public static final String XMSGS_OPTION = "-Xmsgs"; |
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73 public static final String XMSGS_CUSTOM_PREFIX = "-Xmsgs:"; |
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74 private static final String STATS = "-stats"; |
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75 |
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76 // <editor-fold defaultstate="collapsed" desc="Command-line entry point"> |
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77 public static void main(String... args) { |
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78 try { |
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79 new DocLint().run(args); |
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80 } catch (BadArgs e) { |
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81 System.err.println(e.getMessage()); |
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82 System.exit(1); |
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83 } catch (IOException e) { |
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84 System.err.println(e); |
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85 System.exit(2); |
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86 } |
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87 } |
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88 |
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89 // </editor-fold> |
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90 |
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91 // <editor-fold defaultstate="collapsed" desc="Simple API"> |
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92 |
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93 public static class BadArgs extends Exception { |
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94 private static final long serialVersionUID = 0; |
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95 BadArgs(String code, Object... args) { |
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96 this.code = code; |
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97 this.args = args; |
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98 } |
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99 |
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100 final String code; |
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101 final Object[] args; |
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102 } |
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103 |
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104 /** |
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105 * Simple API entry point. |
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106 */ |
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107 public void run(String... args) throws BadArgs, IOException { |
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108 PrintWriter out = new PrintWriter(System.out); |
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109 try { |
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110 run(out, args); |
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111 } finally { |
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112 out.flush(); |
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113 } |
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114 } |
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115 |
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116 public void run(PrintWriter out, String... args) throws BadArgs, IOException { |
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117 env = new Env(); |
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118 processArgs(args); |
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119 |
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120 if (needHelp) |
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121 showHelp(out); |
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122 |
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123 if (javacFiles.isEmpty()) { |
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124 if (!needHelp) |
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125 System.out.println("no files given"); |
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126 } |
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127 |
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128 JavacTool tool = JavacTool.create(); |
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129 |
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130 JavacFileManager fm = new JavacFileManager(new Context(), false, null); |
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131 fm.setSymbolFileEnabled(false); |
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132 fm.setLocation(StandardLocation.PLATFORM_CLASS_PATH, javacBootClassPath); |
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133 fm.setLocation(StandardLocation.CLASS_PATH, javacClassPath); |
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134 fm.setLocation(StandardLocation.SOURCE_PATH, javacSourcePath); |
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135 |
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136 JavacTask task = tool.getTask(out, fm, null, javacOpts, null, |
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137 fm.getJavaFileObjectsFromFiles(javacFiles)); |
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138 Iterable<? extends CompilationUnitTree> units = task.parse(); |
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139 ((JavacTaskImpl) task).enter(); |
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140 |
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141 env.init(task); |
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142 checker = new Checker(env); |
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143 |
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144 DeclScanner ds = new DeclScanner() { |
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145 @Override |
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146 void visitDecl(Tree tree, Name name) { |
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147 TreePath p = getCurrentPath(); |
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148 DocCommentTree dc = env.trees.getDocCommentTree(p); |
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149 |
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150 checker.scan(dc, p); |
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151 } |
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152 }; |
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153 |
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154 ds.scan(units, null); |
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155 |
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156 reportStats(out); |
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157 |
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158 Context ctx = ((JavacTaskImpl) task).getContext(); |
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159 JavaCompiler c = JavaCompiler.instance(ctx); |
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160 c.printCount("error", c.errorCount()); |
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161 c.printCount("warn", c.warningCount()); |
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162 } |
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163 |
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164 void processArgs(String... args) throws BadArgs { |
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165 javacOpts = new ArrayList<String>(); |
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166 javacFiles = new ArrayList<File>(); |
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167 |
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168 if (args.length == 0) |
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169 needHelp = true; |
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170 |
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171 for (int i = 0; i < args.length; i++) { |
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172 String arg = args[i]; |
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173 if (arg.matches("-Xmax(errs|warns)") && i + 1 < args.length) { |
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174 if (args[++i].matches("[0-9]+")) { |
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175 javacOpts.add(arg); |
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176 javacOpts.add(args[i]); |
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177 } else { |
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178 throw new BadArgs("dc.bad.value.for.option", arg, args[i]); |
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179 } |
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180 } else if (arg.equals(STATS)) { |
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181 env.messages.setStatsEnabled(true); |
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182 } else if (arg.matches("-bootclasspath") && i + 1 < args.length) { |
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183 javacBootClassPath = splitPath(args[++i]); |
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184 } else if (arg.matches("-classpath") && i + 1 < args.length) { |
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185 javacClassPath = splitPath(args[++i]); |
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186 } else if (arg.matches("-sourcepath") && i + 1 < args.length) { |
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187 javacSourcePath = splitPath(args[++i]); |
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188 } else if (arg.equals(XMSGS_OPTION)) { |
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189 env.messages.setOptions(null); |
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190 } else if (arg.startsWith(XMSGS_CUSTOM_PREFIX)) { |
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191 env.messages.setOptions(arg.substring(arg.indexOf(":") + 1)); |
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192 } else if (arg.equals("-h") || arg.equals("-help") || arg.equals("--help") |
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193 || arg.equals("-?") || arg.equals("-usage")) { |
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194 needHelp = true; |
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195 } else if (arg.startsWith("-")) { |
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196 throw new BadArgs("dc.bad.option", arg); |
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197 } else { |
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198 while (i < args.length) |
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199 javacFiles.add(new File(args[i++])); |
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200 } |
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201 } |
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202 } |
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203 |
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204 void showHelp(PrintWriter out) { |
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205 out.println("Usage:"); |
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206 out.println(" doclint [options] source-files..."); |
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207 out.println(""); |
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208 out.println("Options:"); |
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209 out.println(" -Xmsgs "); |
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210 out.println(" Same as -Xmsgs:all"); |
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211 out.println(" -Xmsgs:values"); |
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212 out.println(" Specify categories of issues to be checked, where 'values'"); |
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213 out.println(" is a comma-separated list of any of the following:"); |
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214 out.println(" reference show places where comments contain incorrect"); |
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215 out.println(" references to Java source code elements"); |
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216 out.println(" syntax show basic syntax errors within comments"); |
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217 out.println(" html show issues with HTML tags and attributes"); |
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218 out.println(" accessibility show issues for accessibility"); |
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219 out.println(" missing show issues with missing documentation"); |
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220 out.println(" all all of the above"); |
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221 out.println(" Precede a value with '-' to negate it"); |
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222 out.println(" Categories may be qualified by one of:"); |
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223 out.println(" /public /protected /package /private"); |
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224 out.println(" For positive categories (not beginning with '-')"); |
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225 out.println(" the qualifier applies to that access level and above."); |
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226 out.println(" For negative categories (beginning with '-')"); |
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227 out.println(" the qualifier applies to that access level and below."); |
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228 out.println(" If a qualifier is missing, the category applies to"); |
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229 out.println(" all access levels."); |
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230 out.println(" For example, -Xmsgs:all,-syntax/private"); |
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231 out.println(" This will enable all messages, except syntax errors"); |
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232 out.println(" in the doc comments of private methods."); |
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233 out.println(" If no -Xmsgs options are provided, the default is"); |
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234 out.println(" equivalent to -Xmsgs:all/protected, meaning that"); |
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235 out.println(" all messages are reported for protected and public"); |
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236 out.println(" declarations only. "); |
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237 out.println(" -h -help --help -usage -?"); |
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238 out.println(" Show this message."); |
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239 out.println(""); |
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240 out.println("The following javac options are also supported"); |
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241 out.println(" -bootclasspath, -classpath, -sourcepath, -Xmaxerrs, -Xmaxwarns"); |
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242 out.println(""); |
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243 out.println("To run doclint on part of a project, put the compiled classes for your"); |
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244 out.println("project on the classpath (or bootclasspath), then specify the source files"); |
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245 out.println("to be checked on the command line."); |
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246 } |
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247 |
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248 List<File> splitPath(String path) { |
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249 List<File> files = new ArrayList<File>(); |
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250 for (String f: path.split(File.separator)) { |
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251 if (f.length() > 0) |
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252 files.add(new File(f)); |
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253 } |
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254 return files; |
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255 } |
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256 |
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257 List<File> javacBootClassPath; |
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258 List<File> javacClassPath; |
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259 List<File> javacSourcePath; |
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260 List<String> javacOpts; |
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261 List<File> javacFiles; |
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262 boolean needHelp = false; |
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263 |
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264 // </editor-fold> |
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265 |
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266 // <editor-fold defaultstate="collapsed" desc="javac Plugin"> |
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267 |
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268 @Override |
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269 public String getName() { |
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270 return "doclint"; |
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271 } |
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272 |
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273 @Override |
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274 public void call(JavacTask task, String... args) { |
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275 init(task, args, true); |
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276 } |
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277 |
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278 // </editor-fold> |
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279 |
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280 // <editor-fold defaultstate="collapsed" desc="Embedding API"> |
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281 |
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282 public void init(JavacTask task, String[] args, boolean addTaskListener) { |
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283 env = new Env(); |
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284 for (int i = 0; i < args.length; i++) { |
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285 String arg = args[i]; |
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286 if (arg.equals(XMSGS_OPTION)) { |
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287 env.messages.setOptions(null); |
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288 } else if (arg.startsWith(XMSGS_CUSTOM_PREFIX)) { |
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289 env.messages.setOptions(arg.substring(arg.indexOf(":") + 1)); |
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290 } else |
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291 throw new IllegalArgumentException(arg); |
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292 } |
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293 env.init(task); |
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294 |
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295 checker = new Checker(env); |
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296 |
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297 if (addTaskListener) { |
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298 final DeclScanner ds = new DeclScanner() { |
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299 @Override |
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300 void visitDecl(Tree tree, Name name) { |
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301 TreePath p = getCurrentPath(); |
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302 DocCommentTree dc = env.trees.getDocCommentTree(p); |
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303 |
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304 checker.scan(dc, p); |
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305 } |
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306 }; |
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307 |
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308 TaskListener tl = new TaskListener() { |
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309 @Override |
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310 public void started(TaskEvent e) { |
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311 return; |
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312 } |
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313 |
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314 @Override |
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315 public void finished(TaskEvent e) { |
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316 switch (e.getKind()) { |
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317 case ENTER: |
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318 ds.scan(e.getCompilationUnit(), null); |
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319 } |
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320 } |
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321 }; |
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322 |
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323 task.addTaskListener(tl); |
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324 } |
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325 } |
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326 |
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327 public void scan(TreePath p) { |
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328 DocCommentTree dc = env.trees.getDocCommentTree(p); |
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329 checker.scan(dc, p); |
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330 } |
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331 |
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332 public void reportStats(PrintWriter out) { |
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333 env.messages.reportStats(out); |
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334 } |
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335 |
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336 // </editor-fold> |
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337 |
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338 Env env; |
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339 Checker checker; |
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340 |
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341 public static boolean isValidOption(String opt) { |
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342 if (opt.equals(XMSGS_OPTION)) |
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343 return true; |
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344 if (opt.startsWith(XMSGS_CUSTOM_PREFIX)) |
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345 return Messages.Options.isValidOptions(opt.substring(XMSGS_CUSTOM_PREFIX.length())); |
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346 return false; |
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347 } |
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348 |
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349 // <editor-fold defaultstate="collapsed" desc="DeclScanner"> |
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350 |
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351 static abstract class DeclScanner extends TreePathScanner<Void, Void> { |
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352 abstract void visitDecl(Tree tree, Name name); |
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353 |
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354 @Override |
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355 public Void visitClass(ClassTree tree, Void ignore) { |
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356 visitDecl(tree, tree.getSimpleName()); |
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357 return super.visitClass(tree, ignore); |
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358 } |
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359 |
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360 @Override |
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361 public Void visitMethod(MethodTree tree, Void ignore) { |
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362 visitDecl(tree, tree.getName()); |
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363 //return super.visitMethod(tree, ignore); |
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364 return null; |
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365 } |
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366 |
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367 @Override |
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368 public Void visitVariable(VariableTree tree, Void ignore) { |
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369 visitDecl(tree, tree.getName()); |
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370 return super.visitVariable(tree, ignore); |
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371 } |
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372 } |
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373 |
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374 // </editor-fold> |
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375 |
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376 } |