Tue, 11 Aug 2009 01:13:14 +0100
6521805: Regression: JDK5/JDK6 javac allows write access to outer class reference
Summary: javac should warn/complain about identifiers with the same name as synthetic symbol
Reviewed-by: jjg
duke@1 | 1 | /* |
xdono@229 | 2 | * Copyright 1998-2009 Sun Microsystems, Inc. All Rights Reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@1 | 7 | * published by the Free Software Foundation. Sun designates this |
duke@1 | 8 | * particular file as subject to the "Classpath" exception as provided |
duke@1 | 9 | * by Sun in the LICENSE file that accompanied this code. |
duke@1 | 10 | * |
duke@1 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 15 | * accompanied this code). |
duke@1 | 16 | * |
duke@1 | 17 | * You should have received a copy of the GNU General Public License version |
duke@1 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 20 | * |
duke@1 | 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@1 | 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@1 | 23 | * have any questions. |
duke@1 | 24 | */ |
duke@1 | 25 | |
duke@1 | 26 | package com.sun.tools.javadoc; |
duke@1 | 27 | |
duke@1 | 28 | import com.sun.javadoc.*; |
duke@1 | 29 | |
duke@1 | 30 | import static com.sun.javadoc.LanguageVersion.*; |
duke@1 | 31 | |
duke@1 | 32 | import com.sun.tools.javac.util.List; |
duke@1 | 33 | |
duke@1 | 34 | import java.net.*; |
duke@1 | 35 | import java.lang.reflect.Method; |
duke@1 | 36 | import java.lang.reflect.Modifier; |
duke@1 | 37 | import java.lang.reflect.InvocationTargetException; |
duke@1 | 38 | |
duke@1 | 39 | import java.io.File; |
duke@1 | 40 | import java.io.IOException; |
duke@1 | 41 | import java.util.StringTokenizer; |
duke@1 | 42 | |
duke@1 | 43 | /** |
duke@1 | 44 | * Class creates, controls and invokes doclets. |
duke@1 | 45 | * @author Neal Gafter (rewrite) |
duke@1 | 46 | */ |
duke@1 | 47 | public class DocletInvoker { |
duke@1 | 48 | |
jjg@74 | 49 | private final Class<?> docletClass; |
duke@1 | 50 | |
duke@1 | 51 | private final String docletClassName; |
duke@1 | 52 | |
duke@1 | 53 | private final ClassLoader appClassLoader; |
duke@1 | 54 | |
duke@1 | 55 | private final Messager messager; |
duke@1 | 56 | |
duke@1 | 57 | private static class DocletInvokeException extends Exception { |
duke@1 | 58 | private static final long serialVersionUID = 0; |
duke@1 | 59 | } |
duke@1 | 60 | |
duke@1 | 61 | private String appendPath(String path1, String path2) { |
duke@1 | 62 | if (path1 == null || path1.length() == 0) { |
duke@1 | 63 | return path2 == null ? "." : path2; |
duke@1 | 64 | } else if (path2 == null || path2.length() == 0) { |
duke@1 | 65 | return path1; |
duke@1 | 66 | } else { |
duke@1 | 67 | return path1 + File.pathSeparator + path2; |
duke@1 | 68 | } |
duke@1 | 69 | } |
duke@1 | 70 | |
duke@1 | 71 | public DocletInvoker(Messager messager, |
jjg@129 | 72 | String docletClassName, String docletPath, |
jjg@129 | 73 | ClassLoader docletParentClassLoader) { |
duke@1 | 74 | this.messager = messager; |
duke@1 | 75 | this.docletClassName = docletClassName; |
duke@1 | 76 | |
duke@1 | 77 | // construct class loader |
duke@1 | 78 | String cpString = null; // make sure env.class.path defaults to dot |
duke@1 | 79 | |
duke@1 | 80 | // do prepends to get correct ordering |
duke@1 | 81 | cpString = appendPath(System.getProperty("env.class.path"), cpString); |
duke@1 | 82 | cpString = appendPath(System.getProperty("java.class.path"), cpString); |
duke@1 | 83 | cpString = appendPath(docletPath, cpString); |
duke@1 | 84 | URL[] urls = pathToURLs(cpString); |
jjg@129 | 85 | if (docletParentClassLoader == null) |
jjg@209 | 86 | appClassLoader = new URLClassLoader(urls, getDelegationClassLoader(docletClassName)); |
jjg@129 | 87 | else |
jjg@129 | 88 | appClassLoader = new URLClassLoader(urls, docletParentClassLoader); |
duke@1 | 89 | |
duke@1 | 90 | // attempt to find doclet |
mcimadamore@184 | 91 | Class<?> dc = null; |
duke@1 | 92 | try { |
duke@1 | 93 | dc = appClassLoader.loadClass(docletClassName); |
duke@1 | 94 | } catch (ClassNotFoundException exc) { |
duke@1 | 95 | messager.error(null, "main.doclet_class_not_found", docletClassName); |
duke@1 | 96 | messager.exit(); |
duke@1 | 97 | } |
duke@1 | 98 | docletClass = dc; |
duke@1 | 99 | } |
duke@1 | 100 | |
jjg@209 | 101 | /* |
jjg@209 | 102 | * Returns the delegation class loader to use when creating |
jjg@209 | 103 | * appClassLoader (used to load the doclet). The context class |
jjg@209 | 104 | * loader is the best choice, but legacy behavior was to use the |
jjg@209 | 105 | * default delegation class loader (aka system class loader). |
jjg@209 | 106 | * |
jjg@209 | 107 | * Here we favor using the context class loader. To ensure |
jjg@209 | 108 | * compatibility with existing apps, we revert to legacy |
jjg@209 | 109 | * behavior if either or both of the following conditions hold: |
jjg@209 | 110 | * |
jjg@209 | 111 | * 1) the doclet is loadable from the system class loader but not |
jjg@209 | 112 | * from the context class loader, |
jjg@209 | 113 | * |
jjg@209 | 114 | * 2) this.getClass() is loadable from the system class loader but not |
jjg@209 | 115 | * from the context class loader. |
jjg@209 | 116 | */ |
jjg@209 | 117 | private ClassLoader getDelegationClassLoader(String docletClassName) { |
jjg@209 | 118 | ClassLoader ctxCL = Thread.currentThread().getContextClassLoader(); |
jjg@209 | 119 | ClassLoader sysCL = ClassLoader.getSystemClassLoader(); |
jjg@209 | 120 | if (sysCL == null) |
jjg@209 | 121 | return ctxCL; |
jjg@209 | 122 | if (ctxCL == null) |
jjg@209 | 123 | return sysCL; |
jjg@209 | 124 | |
jjg@209 | 125 | // Condition 1. |
jjg@209 | 126 | try { |
jjg@209 | 127 | sysCL.loadClass(docletClassName); |
jjg@209 | 128 | try { |
jjg@209 | 129 | ctxCL.loadClass(docletClassName); |
jjg@209 | 130 | } catch (ClassNotFoundException e) { |
jjg@209 | 131 | return sysCL; |
jjg@209 | 132 | } |
jjg@209 | 133 | } catch (ClassNotFoundException e) { |
jjg@209 | 134 | } |
jjg@209 | 135 | |
jjg@209 | 136 | // Condition 2. |
jjg@209 | 137 | try { |
jjg@209 | 138 | if (getClass() == sysCL.loadClass(getClass().getName())) { |
jjg@209 | 139 | try { |
jjg@209 | 140 | if (getClass() != ctxCL.loadClass(getClass().getName())) |
jjg@209 | 141 | return sysCL; |
jjg@209 | 142 | } catch (ClassNotFoundException e) { |
jjg@209 | 143 | return sysCL; |
jjg@209 | 144 | } |
jjg@209 | 145 | } |
jjg@209 | 146 | } catch (ClassNotFoundException e) { |
jjg@209 | 147 | } |
jjg@209 | 148 | |
jjg@209 | 149 | return ctxCL; |
jjg@209 | 150 | } |
jjg@209 | 151 | |
duke@1 | 152 | /** |
duke@1 | 153 | * Generate documentation here. Return true on success. |
duke@1 | 154 | */ |
duke@1 | 155 | public boolean start(RootDoc root) { |
duke@1 | 156 | Object retVal; |
duke@1 | 157 | String methodName = "start"; |
mcimadamore@184 | 158 | Class<?>[] paramTypes = new Class<?>[1]; |
duke@1 | 159 | Object[] params = new Object[1]; |
duke@1 | 160 | paramTypes[0] = RootDoc.class; |
duke@1 | 161 | params[0] = root; |
duke@1 | 162 | try { |
duke@1 | 163 | retVal = invoke(methodName, null, paramTypes, params); |
duke@1 | 164 | } catch (DocletInvokeException exc) { |
duke@1 | 165 | return false; |
duke@1 | 166 | } |
duke@1 | 167 | if (retVal instanceof Boolean) { |
duke@1 | 168 | return ((Boolean)retVal).booleanValue(); |
duke@1 | 169 | } else { |
duke@1 | 170 | messager.error(null, "main.must_return_boolean", |
duke@1 | 171 | docletClassName, methodName); |
duke@1 | 172 | return false; |
duke@1 | 173 | } |
duke@1 | 174 | } |
duke@1 | 175 | |
duke@1 | 176 | /** |
duke@1 | 177 | * Check for doclet added options here. Zero return means |
duke@1 | 178 | * option not known. Positive value indicates number of |
duke@1 | 179 | * arguments to option. Negative value means error occurred. |
duke@1 | 180 | */ |
duke@1 | 181 | public int optionLength(String option) { |
duke@1 | 182 | Object retVal; |
duke@1 | 183 | String methodName = "optionLength"; |
mcimadamore@184 | 184 | Class<?>[] paramTypes = new Class<?>[1]; |
duke@1 | 185 | Object[] params = new Object[1]; |
duke@1 | 186 | paramTypes[0] = option.getClass(); |
duke@1 | 187 | params[0] = option; |
duke@1 | 188 | try { |
duke@1 | 189 | retVal = invoke(methodName, new Integer(0), paramTypes, params); |
duke@1 | 190 | } catch (DocletInvokeException exc) { |
duke@1 | 191 | return -1; |
duke@1 | 192 | } |
duke@1 | 193 | if (retVal instanceof Integer) { |
duke@1 | 194 | return ((Integer)retVal).intValue(); |
duke@1 | 195 | } else { |
duke@1 | 196 | messager.error(null, "main.must_return_int", |
duke@1 | 197 | docletClassName, methodName); |
duke@1 | 198 | return -1; |
duke@1 | 199 | } |
duke@1 | 200 | } |
duke@1 | 201 | |
duke@1 | 202 | /** |
duke@1 | 203 | * Let doclet check that all options are OK. Returning true means |
duke@1 | 204 | * options are OK. If method does not exist, assume true. |
duke@1 | 205 | */ |
duke@1 | 206 | public boolean validOptions(List<String[]> optlist) { |
duke@1 | 207 | Object retVal; |
duke@1 | 208 | String options[][] = optlist.toArray(new String[optlist.length()][]); |
duke@1 | 209 | String methodName = "validOptions"; |
duke@1 | 210 | DocErrorReporter reporter = messager; |
mcimadamore@184 | 211 | Class<?>[] paramTypes = new Class<?>[2]; |
duke@1 | 212 | Object[] params = new Object[2]; |
duke@1 | 213 | paramTypes[0] = options.getClass(); |
duke@1 | 214 | paramTypes[1] = DocErrorReporter.class; |
duke@1 | 215 | params[0] = options; |
duke@1 | 216 | params[1] = reporter; |
duke@1 | 217 | try { |
duke@1 | 218 | retVal = invoke(methodName, Boolean.TRUE, paramTypes, params); |
duke@1 | 219 | } catch (DocletInvokeException exc) { |
duke@1 | 220 | return false; |
duke@1 | 221 | } |
duke@1 | 222 | if (retVal instanceof Boolean) { |
duke@1 | 223 | return ((Boolean)retVal).booleanValue(); |
duke@1 | 224 | } else { |
duke@1 | 225 | messager.error(null, "main.must_return_boolean", |
duke@1 | 226 | docletClassName, methodName); |
duke@1 | 227 | return false; |
duke@1 | 228 | } |
duke@1 | 229 | } |
duke@1 | 230 | |
duke@1 | 231 | /** |
duke@1 | 232 | * Return the language version supported by this doclet. |
duke@1 | 233 | * If the method does not exist in the doclet, assume version 1.1. |
duke@1 | 234 | */ |
duke@1 | 235 | public LanguageVersion languageVersion() { |
duke@1 | 236 | try { |
duke@1 | 237 | Object retVal; |
duke@1 | 238 | String methodName = "languageVersion"; |
mcimadamore@184 | 239 | Class<?>[] paramTypes = new Class<?>[0]; |
duke@1 | 240 | Object[] params = new Object[0]; |
duke@1 | 241 | try { |
duke@1 | 242 | retVal = invoke(methodName, JAVA_1_1, paramTypes, params); |
duke@1 | 243 | } catch (DocletInvokeException exc) { |
duke@1 | 244 | return JAVA_1_1; |
duke@1 | 245 | } |
duke@1 | 246 | if (retVal instanceof LanguageVersion) { |
duke@1 | 247 | return (LanguageVersion)retVal; |
duke@1 | 248 | } else { |
duke@1 | 249 | messager.error(null, "main.must_return_languageversion", |
duke@1 | 250 | docletClassName, methodName); |
duke@1 | 251 | return JAVA_1_1; |
duke@1 | 252 | } |
duke@1 | 253 | } catch (NoClassDefFoundError ex) { // for boostrapping, no Enum class. |
duke@1 | 254 | return null; |
duke@1 | 255 | } |
duke@1 | 256 | } |
duke@1 | 257 | |
duke@1 | 258 | /** |
duke@1 | 259 | * Utility method for calling doclet functionality |
duke@1 | 260 | */ |
duke@1 | 261 | private Object invoke(String methodName, Object returnValueIfNonExistent, |
mcimadamore@184 | 262 | Class<?>[] paramTypes, Object[] params) |
duke@1 | 263 | throws DocletInvokeException { |
duke@1 | 264 | Method meth; |
duke@1 | 265 | try { |
duke@1 | 266 | meth = docletClass.getMethod(methodName, paramTypes); |
duke@1 | 267 | } catch (NoSuchMethodException exc) { |
duke@1 | 268 | if (returnValueIfNonExistent == null) { |
duke@1 | 269 | messager.error(null, "main.doclet_method_not_found", |
duke@1 | 270 | docletClassName, methodName); |
duke@1 | 271 | throw new DocletInvokeException(); |
duke@1 | 272 | } else { |
duke@1 | 273 | return returnValueIfNonExistent; |
duke@1 | 274 | } |
duke@1 | 275 | } catch (SecurityException exc) { |
duke@1 | 276 | messager.error(null, "main.doclet_method_not_accessible", |
duke@1 | 277 | docletClassName, methodName); |
duke@1 | 278 | throw new DocletInvokeException(); |
duke@1 | 279 | } |
duke@1 | 280 | if (!Modifier.isStatic(meth.getModifiers())) { |
duke@1 | 281 | messager.error(null, "main.doclet_method_must_be_static", |
duke@1 | 282 | docletClassName, methodName); |
duke@1 | 283 | throw new DocletInvokeException(); |
duke@1 | 284 | } |
jjg@209 | 285 | ClassLoader savedCCL = |
jjg@209 | 286 | Thread.currentThread().getContextClassLoader(); |
duke@1 | 287 | try { |
duke@1 | 288 | Thread.currentThread().setContextClassLoader(appClassLoader); |
duke@1 | 289 | return meth.invoke(null , params); |
duke@1 | 290 | } catch (IllegalArgumentException exc) { |
duke@1 | 291 | messager.error(null, "main.internal_error_exception_thrown", |
duke@1 | 292 | docletClassName, methodName, exc.toString()); |
duke@1 | 293 | throw new DocletInvokeException(); |
duke@1 | 294 | } catch (IllegalAccessException exc) { |
duke@1 | 295 | messager.error(null, "main.doclet_method_not_accessible", |
duke@1 | 296 | docletClassName, methodName); |
duke@1 | 297 | throw new DocletInvokeException(); |
duke@1 | 298 | } catch (NullPointerException exc) { |
duke@1 | 299 | messager.error(null, "main.internal_error_exception_thrown", |
duke@1 | 300 | docletClassName, methodName, exc.toString()); |
duke@1 | 301 | throw new DocletInvokeException(); |
duke@1 | 302 | } catch (InvocationTargetException exc) { |
duke@1 | 303 | Throwable err = exc.getTargetException(); |
duke@1 | 304 | if (err instanceof java.lang.OutOfMemoryError) { |
duke@1 | 305 | messager.error(null, "main.out.of.memory"); |
duke@1 | 306 | } else { |
duke@1 | 307 | messager.error(null, "main.exception_thrown", |
duke@1 | 308 | docletClassName, methodName, exc.toString()); |
duke@1 | 309 | exc.getTargetException().printStackTrace(); |
duke@1 | 310 | } |
duke@1 | 311 | throw new DocletInvokeException(); |
jjg@209 | 312 | } finally { |
jjg@209 | 313 | Thread.currentThread().setContextClassLoader(savedCCL); |
duke@1 | 314 | } |
duke@1 | 315 | } |
duke@1 | 316 | |
duke@1 | 317 | /** |
duke@1 | 318 | * Utility method for converting a search path string to an array |
duke@1 | 319 | * of directory and JAR file URLs. |
duke@1 | 320 | * |
duke@1 | 321 | * @param path the search path string |
duke@1 | 322 | * @return the resulting array of directory and JAR file URLs |
duke@1 | 323 | */ |
duke@1 | 324 | static URL[] pathToURLs(String path) { |
duke@1 | 325 | StringTokenizer st = new StringTokenizer(path, File.pathSeparator); |
duke@1 | 326 | URL[] urls = new URL[st.countTokens()]; |
duke@1 | 327 | int count = 0; |
duke@1 | 328 | while (st.hasMoreTokens()) { |
duke@1 | 329 | URL url = fileToURL(new File(st.nextToken())); |
duke@1 | 330 | if (url != null) { |
duke@1 | 331 | urls[count++] = url; |
duke@1 | 332 | } |
duke@1 | 333 | } |
duke@1 | 334 | if (urls.length != count) { |
duke@1 | 335 | URL[] tmp = new URL[count]; |
duke@1 | 336 | System.arraycopy(urls, 0, tmp, 0, count); |
duke@1 | 337 | urls = tmp; |
duke@1 | 338 | } |
duke@1 | 339 | return urls; |
duke@1 | 340 | } |
duke@1 | 341 | |
duke@1 | 342 | /** |
duke@1 | 343 | * Returns the directory or JAR file URL corresponding to the specified |
duke@1 | 344 | * local file name. |
duke@1 | 345 | * |
duke@1 | 346 | * @param file the File object |
duke@1 | 347 | * @return the resulting directory or JAR file URL, or null if unknown |
duke@1 | 348 | */ |
duke@1 | 349 | static URL fileToURL(File file) { |
duke@1 | 350 | String name; |
duke@1 | 351 | try { |
duke@1 | 352 | name = file.getCanonicalPath(); |
duke@1 | 353 | } catch (IOException e) { |
duke@1 | 354 | name = file.getAbsolutePath(); |
duke@1 | 355 | } |
duke@1 | 356 | name = name.replace(File.separatorChar, '/'); |
duke@1 | 357 | if (!name.startsWith("/")) { |
duke@1 | 358 | name = "/" + name; |
duke@1 | 359 | } |
duke@1 | 360 | // If the file does not exist, then assume that it's a directory |
duke@1 | 361 | if (!file.isFile()) { |
duke@1 | 362 | name = name + "/"; |
duke@1 | 363 | } |
duke@1 | 364 | try { |
duke@1 | 365 | return new URL("file", "", name); |
duke@1 | 366 | } catch (MalformedURLException e) { |
duke@1 | 367 | throw new IllegalArgumentException("file"); |
duke@1 | 368 | } |
duke@1 | 369 | } |
duke@1 | 370 | } |