Showing the changes to java/pkg/sun/invoke/anon/ConstantPoolPatch.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,503 @@ | ||
| 1 | +/* | |
| 2 | + * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.invoke.anon; | |
| 27 | + | |
| 28 | +import java.io.IOException; | |
| 29 | +import java.io.OutputStream; | |
| 30 | +import java.util.Arrays; | |
| 31 | +import java.util.HashSet; | |
| 32 | +import java.util.IdentityHashMap; | |
| 33 | +import java.util.Map; | |
| 34 | + | |
| 35 | +import static sun.invoke.anon.ConstantPoolVisitor.*; | |
| 36 | + | |
| 37 | +/** A class and its patched constant pool. | |
| 38 | + * | |
| 39 | + * This class allow to modify (patch) a constant pool | |
| 40 | + * by changing the value of its entry. | |
| 41 | + * Entry are referenced using index that can be get | |
| 42 | + * by parsing the constant pool using | |
| 43 | + * {@link ConstantPoolParser#parse(ConstantPoolVisitor)}. | |
| 44 | + * | |
| 45 | + * @see ConstantPoolVisitor | |
| 46 | + * @see ConstantPoolParser#createPatch() | |
| 47 | + */ | |
| 48 | +public class ConstantPoolPatch { | |
| 49 | + final ConstantPoolParser outer; | |
| 50 | + final Object[] patchArray; | |
| 51 | + | |
| 52 | + ConstantPoolPatch(ConstantPoolParser outer) { | |
| 53 | + this.outer = outer; | |
| 54 | + this.patchArray = new Object[outer.getLength()]; | |
| 55 | + } | |
| 56 | + | |
| 57 | + /** Create a {@link ConstantPoolParser} and | |
| 58 | + * a {@link ConstantPoolPatch} in one step. | |
| 59 | + * Equivalent to {@code new ConstantPoolParser(classFile).createPatch()}. | |
| 60 | + * | |
| 61 | + * @param classFile an array of bytes containing a class. | |
| 62 | + * @see #ConstantPoolParser(Class) | |
| 63 | + */ | |
| 64 | + public ConstantPoolPatch(byte[] classFile) throws InvalidConstantPoolFormatException { | |
| 65 | + this(new ConstantPoolParser(classFile)); | |
| 66 | + } | |
| 67 | + | |
| 68 | + /** Create a {@link ConstantPoolParser} and | |
| 69 | + * a {@link ConstantPoolPatch} in one step. | |
| 70 | + * Equivalent to {@code new ConstantPoolParser(templateClass).createPatch()}. | |
| 71 | + * | |
| 72 | + * @param templateClass the class to parse. | |
| 73 | + * @see #ConstantPoolParser(Class) | |
| 74 | + */ | |
| 75 | + public ConstantPoolPatch(Class<?> templateClass) throws IOException, InvalidConstantPoolFormatException { | |
| 76 | + this(new ConstantPoolParser(templateClass)); | |
| 77 | + } | |
| 78 | + | |
| 79 | + | |
| 80 | + /** Creates a patch from an existing patch. | |
| 81 | + * All changes are copied from that patch. | |
| 82 | + * @param patch a patch | |
| 83 | + * | |
| 84 | + * @see ConstantPoolParser#createPatch() | |
| 85 | + */ | |
| 86 | + public ConstantPoolPatch(ConstantPoolPatch patch) { | |
| 87 | + outer = patch.outer; | |
| 88 | + patchArray = patch.patchArray.clone(); | |
| 89 | + } | |
| 90 | + | |
| 91 | + /** Which parser built this patch? */ | |
| 92 | + public ConstantPoolParser getParser() { | |
| 93 | + return outer; | |
| 94 | + } | |
| 95 | + | |
| 96 | + /** Report the tag at the given index in the constant pool. */ | |
| 97 | + public byte getTag(int index) { | |
| 98 | + return outer.getTag(index); | |
| 99 | + } | |
| 100 | + | |
| 101 | + /** Report the current patch at the given index of the constant pool. | |
| 102 | + * Null means no patch will be made. | |
| 103 | + * To observe the unpatched entry at the given index, use | |
| 104 | + * {@link #getParser()}{@code .}@link ConstantPoolParser#parse(ConstantPoolVisitor)} | |
| 105 | + */ | |
| 106 | + public Object getPatch(int index) { | |
| 107 | + Object value = patchArray[index]; | |
| 108 | + if (value == null) return null; | |
| 109 | + switch (getTag(index)) { | |
| 110 | + case CONSTANT_Fieldref: | |
| 111 | + case CONSTANT_Methodref: | |
| 112 | + case CONSTANT_InterfaceMethodref: | |
| 113 | + if (value instanceof String) | |
| 114 | + value = stripSemis(2, (String) value); | |
| 115 | + break; | |
| 116 | + case CONSTANT_NameAndType: | |
| 117 | + if (value instanceof String) | |
| 118 | + value = stripSemis(1, (String) value); | |
| 119 | + break; | |
| 120 | + } | |
| 121 | + return value; | |
| 122 | + } | |
| 123 | + | |
| 124 | + /** Clear all patches. */ | |
| 125 | + public void clear() { | |
| 126 | + Arrays.fill(patchArray, null); | |
| 127 | + } | |
| 128 | + | |
| 129 | + /** Clear one patch. */ | |
| 130 | + public void clear(int index) { | |
| 131 | + patchArray[index] = null; | |
| 132 | + } | |
| 133 | + | |
| 134 | + /** Produce the patches as an array. */ | |
| 135 | + public Object[] getPatches() { | |
| 136 | + return patchArray.clone(); | |
| 137 | + } | |
| 138 | + | |
| 139 | + /** Produce the original constant pool as an array. */ | |
| 140 | + public Object[] getOriginalCP() throws InvalidConstantPoolFormatException { | |
| 141 | + return getOriginalCP(0, patchArray.length, -1); | |
| 142 | + } | |
| 143 | + | |
| 144 | + /** Walk the constant pool, applying patches using the given map. | |
| 145 | + * | |
| 146 | + * @param utf8Map Utf8 strings to modify, if encountered | |
| 147 | + * @param classMap Classes (or their names) to modify, if encountered | |
| 148 | + * @param valueMap Constant values to modify, if encountered | |
| 149 | + * @param deleteUsedEntries if true, delete map entries that are used | |
| 150 | + */ | |
| 151 | + public void putPatches(final Map<String,String> utf8Map, | |
| 152 | + final Map<String,Object> classMap, | |
| 153 | + final Map<Object,Object> valueMap, | |
| 154 | + boolean deleteUsedEntries) throws InvalidConstantPoolFormatException { | |
| 155 | + final HashSet<String> usedUtf8Keys; | |
| 156 | + final HashSet<String> usedClassKeys; | |
| 157 | + final HashSet<Object> usedValueKeys; | |
| 158 | + if (deleteUsedEntries) { | |
| 159 | + usedUtf8Keys = (utf8Map == null) ? null : new HashSet<String>(); | |
| 160 | + usedClassKeys = (classMap == null) ? null : new HashSet<String>(); | |
| 161 | + usedValueKeys = (valueMap == null) ? null : new HashSet<Object>(); | |
| 162 | + } else { | |
| 163 | + usedUtf8Keys = null; | |
| 164 | + usedClassKeys = null; | |
| 165 | + usedValueKeys = null; | |
| 166 | + } | |
| 167 | + | |
| 168 | + outer.parse(new ConstantPoolVisitor() { | |
| 169 | + | |
| 170 | + @Override | |
| 171 | + public void visitUTF8(int index, byte tag, String utf8) { | |
| 172 | + putUTF8(index, utf8Map.get(utf8)); | |
| 173 | + if (usedUtf8Keys != null) usedUtf8Keys.add(utf8); | |
| 174 | + } | |
| 175 | + | |
| 176 | + @Override | |
| 177 | + public void visitConstantValue(int index, byte tag, Object value) { | |
| 178 | + putConstantValue(index, tag, valueMap.get(value)); | |
| 179 | + if (usedValueKeys != null) usedValueKeys.add(value); | |
| 180 | + } | |
| 181 | + | |
| 182 | + @Override | |
| 183 | + public void visitConstantString(int index, byte tag, String name, int nameIndex) { | |
| 184 | + if (tag == CONSTANT_Class) { | |
| 185 | + putConstantValue(index, tag, classMap.get(name)); | |
| 186 | + if (usedClassKeys != null) usedClassKeys.add(name); | |
| 187 | + } else { | |
| 188 | + assert(tag == CONSTANT_String); | |
| 189 | + visitConstantValue(index, tag, name); | |
| 190 | + } | |
| 191 | + } | |
| 192 | + }); | |
| 193 | + if (usedUtf8Keys != null) utf8Map.keySet().removeAll(usedUtf8Keys); | |
| 194 | + if (usedClassKeys != null) classMap.keySet().removeAll(usedClassKeys); | |
| 195 | + if (usedValueKeys != null) valueMap.keySet().removeAll(usedValueKeys); | |
| 196 | + } | |
| 197 | + | |
| 198 | + Object[] getOriginalCP(final int startIndex, | |
| 199 | + final int endIndex, | |
| 200 | + final int tagMask) throws InvalidConstantPoolFormatException { | |
| 201 | + final Object[] cpArray = new Object[endIndex - startIndex]; | |
| 202 | + outer.parse(new ConstantPoolVisitor() { | |
| 203 | + | |
| 204 | + void show(int index, byte tag, Object value) { | |
| 205 | + if (index < startIndex || index >= endIndex) return; | |
| 206 | + if (((1 << tag) & tagMask) == 0) return; | |
| 207 | + cpArray[index - startIndex] = value; | |
| 208 | + } | |
| 209 | + | |
| 210 | + @Override | |
| 211 | + public void visitUTF8(int index, byte tag, String utf8) { | |
| 212 | + show(index, tag, utf8); | |
| 213 | + } | |
| 214 | + | |
| 215 | + @Override | |
| 216 | + public void visitConstantValue(int index, byte tag, Object value) { | |
| 217 | + assert(tag != CONSTANT_String); | |
| 218 | + show(index, tag, value); | |
| 219 | + } | |
| 220 | + | |
| 221 | + @Override | |
| 222 | + public void visitConstantString(int index, byte tag, | |
| 223 | + String value, int j) { | |
| 224 | + show(index, tag, value); | |
| 225 | + } | |
| 226 | + | |
| 227 | + @Override | |
| 228 | + public void visitMemberRef(int index, byte tag, | |
| 229 | + String className, String memberName, | |
| 230 | + String signature, | |
| 231 | + int j, int k) { | |
| 232 | + show(index, tag, new String[]{ className, memberName, signature }); | |
| 233 | + } | |
| 234 | + | |
| 235 | + @Override | |
| 236 | + public void visitDescriptor(int index, byte tag, | |
| 237 | + String memberName, String signature, | |
| 238 | + int j, int k) { | |
| 239 | + show(index, tag, new String[]{ memberName, signature }); | |
| 240 | + } | |
| 241 | + }); | |
| 242 | + return cpArray; | |
| 243 | + } | |
| 244 | + | |
| 245 | + /** Write the head (header plus constant pool) | |
| 246 | + * of the patched class file to the indicated stream. | |
| 247 | + */ | |
| 248 | + void writeHead(OutputStream out) throws IOException { | |
| 249 | + outer.writePatchedHead(out, patchArray); | |
| 250 | + } | |
| 251 | + | |
| 252 | + /** Write the tail (everything after the constant pool) | |
| 253 | + * of the patched class file to the indicated stream. | |
| 254 | + */ | |
| 255 | + void writeTail(OutputStream out) throws IOException { | |
| 256 | + outer.writeTail(out); | |
| 257 | + } | |
| 258 | + | |
| 259 | + private void checkConstantTag(byte tag, Object value) { | |
| 260 | + if (value == null) | |
| 261 | + throw new IllegalArgumentException( | |
| 262 | + "invalid null constant value"); | |
| 263 | + if (classForTag(tag) != value.getClass()) | |
| 264 | + throw new IllegalArgumentException( | |
| 265 | + "invalid constant value" | |
| 266 | + + (tag == CONSTANT_None ? "" | |
| 267 | + : " for tag "+tagName(tag)) | |
| 268 | + + " of class "+value.getClass()); | |
| 269 | + } | |
| 270 | + | |
| 271 | + private void checkTag(int index, byte putTag) { | |
| 272 | + byte tag = outer.tags[index]; | |
| 273 | + if (tag != putTag) | |
| 274 | + throw new IllegalArgumentException( | |
| 275 | + "invalid put operation" | |
| 276 | + + " for " + tagName(putTag) | |
| 277 | + + " at index " + index + " found " + tagName(tag)); | |
| 278 | + } | |
| 279 | + | |
| 280 | + private void checkTagMask(int index, int tagBitMask) { | |
| 281 | + byte tag = outer.tags[index]; | |
| 282 | + int tagBit = ((tag & 0x1F) == tag) ? (1 << tag) : 0; | |
| 283 | + if ((tagBit & tagBitMask) == 0) | |
| 284 | + throw new IllegalArgumentException( | |
| 285 | + "invalid put operation" | |
| 286 | + + " at index " + index + " found " + tagName(tag)); | |
| 287 | + } | |
| 288 | + | |
| 289 | + private static void checkMemberName(String memberName) { | |
| 290 | + if (memberName.indexOf(';') >= 0) | |
| 291 | + throw new IllegalArgumentException("memberName " + memberName + " contains a ';'"); | |
| 292 | + } | |
| 293 | + | |
| 294 | + /** Set the entry of the constant pool indexed by index to | |
| 295 | + * a new string. | |
| 296 | + * | |
| 297 | + * @param index an index to a constant pool entry containing a | |
| 298 | + * {@link ConstantPoolVisitor#CONSTANT_Utf8} value. | |
| 299 | + * @param utf8 a string | |
| 300 | + * | |
| 301 | + * @see ConstantPoolVisitor#visitUTF8(int, byte, String) | |
| 302 | + */ | |
| 303 | + public void putUTF8(int index, String utf8) { | |
| 304 | + if (utf8 == null) { clear(index); return; } | |
| 305 | + checkTag(index, CONSTANT_Utf8); | |
| 306 | + patchArray[index] = utf8; | |
| 307 | + } | |
| 308 | + | |
| 309 | + /** Set the entry of the constant pool indexed by index to | |
| 310 | + * a new value, depending on its dynamic type. | |
| 311 | + * | |
| 312 | + * @param index an index to a constant pool entry containing a | |
| 313 | + * one of the following structures: | |
| 314 | + * {@link ConstantPoolVisitor#CONSTANT_Integer}, | |
| 315 | + * {@link ConstantPoolVisitor#CONSTANT_Float}, | |
| 316 | + * {@link ConstantPoolVisitor#CONSTANT_Long}, | |
| 317 | + * {@link ConstantPoolVisitor#CONSTANT_Double}, | |
| 318 | + * {@link ConstantPoolVisitor#CONSTANT_String}, or | |
| 319 | + * {@link ConstantPoolVisitor#CONSTANT_Class} | |
| 320 | + * @param value a boxed int, float, long or double; or a string or class object | |
| 321 | + * @throws IllegalArgumentException if the type of the constant does not | |
| 322 | + * match the constant pool entry type, | |
| 323 | + * as reported by {@link #getTag(int)} | |
| 324 | + * | |
| 325 | + * @see #putConstantValue(int, byte, Object) | |
| 326 | + * @see ConstantPoolVisitor#visitConstantValue(int, byte, Object) | |
| 327 | + * @see ConstantPoolVisitor#visitConstantString(int, byte, String, int) | |
| 328 | + */ | |
| 329 | + public void putConstantValue(int index, Object value) { | |
| 330 | + if (value == null) { clear(index); return; } | |
| 331 | + byte tag = tagForConstant(value.getClass()); | |
| 332 | + checkConstantTag(tag, value); | |
| 333 | + checkTag(index, tag); | |
| 334 | + patchArray[index] = value; | |
| 335 | + } | |
| 336 | + | |
| 337 | + /** Set the entry of the constant pool indexed by index to | |
| 338 | + * a new value. | |
| 339 | + * | |
| 340 | + * @param index an index to a constant pool entry matching the given tag | |
| 341 | + * @param tag one of the following values: | |
| 342 | + * {@link ConstantPoolVisitor#CONSTANT_Integer}, | |
| 343 | + * {@link ConstantPoolVisitor#CONSTANT_Float}, | |
| 344 | + * {@link ConstantPoolVisitor#CONSTANT_Long}, | |
| 345 | + * {@link ConstantPoolVisitor#CONSTANT_Double}, | |
| 346 | + * {@link ConstantPoolVisitor#CONSTANT_String}, or | |
| 347 | + * {@link ConstantPoolVisitor#CONSTANT_Class} | |
| 348 | + * @param value a boxed number, string, or class object | |
| 349 | + * @throws IllegalArgumentException if the type of the constant does not | |
| 350 | + * match the constant pool entry type, or if a class name contains | |
| 351 | + * '/' or ';' | |
| 352 | + * | |
| 353 | + * @see #putConstantValue(int, Object) | |
| 354 | + * @see ConstantPoolVisitor#visitConstantValue(int, byte, Object) | |
| 355 | + * @see ConstantPoolVisitor#visitConstantString(int, byte, String, int) | |
| 356 | + */ | |
| 357 | + public void putConstantValue(int index, byte tag, Object value) { | |
| 358 | + if (value == null) { clear(index); return; } | |
| 359 | + checkTag(index, tag); | |
| 360 | + if (tag == CONSTANT_Class && value instanceof String) { | |
| 361 | + checkClassName((String) value); | |
| 362 | + } else if (tag == CONSTANT_String) { | |
| 363 | + // the JVM accepts any object as a patch for a string | |
| 364 | + } else { | |
| 365 | + // make sure the incoming value is the right type | |
| 366 | + checkConstantTag(tag, value); | |
| 367 | + } | |
| 368 | + checkTag(index, tag); | |
| 369 | + patchArray[index] = value; | |
| 370 | + } | |
| 371 | + | |
| 372 | + /** Set the entry of the constant pool indexed by index to | |
| 373 | + * a new {@link ConstantPoolVisitor#CONSTANT_NameAndType} value. | |
| 374 | + * | |
| 375 | + * @param index an index to a constant pool entry containing a | |
| 376 | + * {@link ConstantPoolVisitor#CONSTANT_NameAndType} value. | |
| 377 | + * @param memberName a memberName | |
| 378 | + * @param signature a signature | |
| 379 | + * @throws IllegalArgumentException if memberName contains the character ';' | |
| 380 | + * | |
| 381 | + * @see ConstantPoolVisitor#visitDescriptor(int, byte, String, String, int, int) | |
| 382 | + */ | |
| 383 | + public void putDescriptor(int index, String memberName, String signature) { | |
| 384 | + checkTag(index, CONSTANT_NameAndType); | |
| 385 | + checkMemberName(memberName); | |
| 386 | + patchArray[index] = addSemis(memberName, signature); | |
| 387 | + } | |
| 388 | + | |
| 389 | + /** Set the entry of the constant pool indexed by index to | |
| 390 | + * a new {@link ConstantPoolVisitor#CONSTANT_Fieldref}, | |
| 391 | + * {@link ConstantPoolVisitor#CONSTANT_Methodref}, or | |
| 392 | + * {@link ConstantPoolVisitor#CONSTANT_InterfaceMethodref} value. | |
| 393 | + * | |
| 394 | + * @param index an index to a constant pool entry containing a member reference | |
| 395 | + * @param className a class name | |
| 396 | + * @param memberName a field or method name | |
| 397 | + * @param signature a field or method signature | |
| 398 | + * @throws IllegalArgumentException if memberName contains the character ';' | |
| 399 | + * or signature is not a correct signature | |
| 400 | + * | |
| 401 | + * @see ConstantPoolVisitor#visitMemberRef(int, byte, String, String, String, int, int) | |
| 402 | + */ | |
| 403 | + public void putMemberRef(int index, byte tag, | |
| 404 | + String className, String memberName, String signature) { | |
| 405 | + checkTagMask(tag, CONSTANT_MemberRef_MASK); | |
| 406 | + checkTag(index, tag); | |
| 407 | + checkClassName(className); | |
| 408 | + checkMemberName(memberName); | |
| 409 | + if (signature.startsWith("(") == (tag == CONSTANT_Fieldref)) | |
| 410 | + throw new IllegalArgumentException("bad signature: "+signature); | |
| 411 | + patchArray[index] = addSemis(className, memberName, signature); | |
| 412 | + } | |
| 413 | + | |
| 414 | + static private final int CONSTANT_MemberRef_MASK = | |
| 415 | + CONSTANT_Fieldref | |
| 416 | + | CONSTANT_Methodref | |
| 417 | + | CONSTANT_InterfaceMethodref; | |
| 418 | + | |
| 419 | + private static final Map<Class<?>, Byte> CONSTANT_VALUE_CLASS_TAG | |
| 420 | + = new IdentityHashMap<Class<?>, Byte>(); | |
| 421 | + private static final Class[] CONSTANT_VALUE_CLASS = new Class[16]; | |
| 422 | + static { | |
| 423 | + Object[][] values = { | |
| 424 | + {Integer.class, CONSTANT_Integer}, | |
| 425 | + {Long.class, CONSTANT_Long}, | |
| 426 | + {Float.class, CONSTANT_Float}, | |
| 427 | + {Double.class, CONSTANT_Double}, | |
| 428 | + {String.class, CONSTANT_String}, | |
| 429 | + {Class.class, CONSTANT_Class} | |
| 430 | + }; | |
| 431 | + for (Object[] value : values) { | |
| 432 | + Class<?> cls = (Class<?>)value[0]; | |
| 433 | + Byte tag = (Byte) value[1]; | |
| 434 | + CONSTANT_VALUE_CLASS_TAG.put(cls, tag); | |
| 435 | + CONSTANT_VALUE_CLASS[(byte)tag] = cls; | |
| 436 | + } | |
| 437 | + } | |
| 438 | + | |
| 439 | + static Class<?> classForTag(byte tag) { | |
| 440 | + if ((tag & 0xFF) >= CONSTANT_VALUE_CLASS.length) | |
| 441 | + return null; | |
| 442 | + return CONSTANT_VALUE_CLASS[tag]; | |
| 443 | + } | |
| 444 | + | |
| 445 | + static byte tagForConstant(Class<?> cls) { | |
| 446 | + Byte tag = CONSTANT_VALUE_CLASS_TAG.get(cls); | |
| 447 | + return (tag == null) ? CONSTANT_None : (byte)tag; | |
| 448 | + } | |
| 449 | + | |
| 450 | + private static void checkClassName(String className) { | |
| 451 | + if (className.indexOf('/') >= 0 || className.indexOf(';') >= 0) | |
| 452 | + throw new IllegalArgumentException("invalid class name " + className); | |
| 453 | + } | |
| 454 | + | |
| 455 | + static String addSemis(String name, String... names) { | |
| 456 | + StringBuilder buf = new StringBuilder(name.length() * 5); | |
| 457 | + buf.append(name); | |
| 458 | + for (String name2 : names) { | |
| 459 | + buf.append(';').append(name2); | |
| 460 | + } | |
| 461 | + String res = buf.toString(); | |
| 462 | + assert(stripSemis(names.length, res)[0].equals(name)); | |
| 463 | + assert(stripSemis(names.length, res)[1].equals(names[0])); | |
| 464 | + assert(names.length == 1 || | |
| 465 | + stripSemis(names.length, res)[2].equals(names[1])); | |
| 466 | + return res; | |
| 467 | + } | |
| 468 | + | |
| 469 | + static String[] stripSemis(int count, String string) { | |
| 470 | + String[] res = new String[count+1]; | |
| 471 | + int pos = 0; | |
| 472 | + for (int i = 0; i < count; i++) { | |
| 473 | + int pos2 = string.indexOf(';', pos); | |
| 474 | + if (pos2 < 0) pos2 = string.length(); // yuck | |
| 475 | + res[i] = string.substring(pos, pos2); | |
| 476 | + pos = pos2; | |
| 477 | + } | |
| 478 | + res[count] = string.substring(pos); | |
| 479 | + return res; | |
| 480 | + } | |
| 481 | + | |
| 482 | + public String toString() { | |
| 483 | + StringBuilder buf = new StringBuilder(this.getClass().getName()); | |
| 484 | + buf.append("{"); | |
| 485 | + Object[] origCP = null; | |
| 486 | + for (int i = 0; i < patchArray.length; i++) { | |
| 487 | + if (patchArray[i] == null) continue; | |
| 488 | + if (origCP != null) { | |
| 489 | + buf.append(", "); | |
| 490 | + } else { | |
| 491 | + try { | |
| 492 | + origCP = getOriginalCP(); | |
| 493 | + } catch (InvalidConstantPoolFormatException ee) { | |
| 494 | + origCP = new Object[0]; | |
| 495 | + } | |
| 496 | + } | |
| 497 | + Object orig = (i < origCP.length) ? origCP[i] : "?"; | |
| 498 | + buf.append(orig).append("=").append(patchArray[i]); | |
| 499 | + } | |
| 500 | + buf.append("}"); | |
| 501 | + return buf.toString(); | |
| 502 | + } | |
| 503 | +} | |