J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001-2003 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.java.util.jar.pack; |
| 27 | |
| 28 | import java.io.*; |
| 29 | import java.util.*; |
| 30 | |
| 31 | /** |
| 32 | * Representation of constant pool entries and indexes. |
| 33 | * @author John Rose |
| 34 | */ |
| 35 | abstract |
| 36 | class ConstantPool implements Constants { |
| 37 | private ConstantPool() {} // do not instantiate |
| 38 | |
| 39 | static int verbose() { |
| 40 | return Utils.currentPropMap().getInteger(Utils.DEBUG_VERBOSE); |
| 41 | } |
| 42 | |
| 43 | // Uniquification tables for factory methods: |
| 44 | private static final HashMap utf8Entries = new HashMap(); |
| 45 | private static final HashMap classEntries = new HashMap(); |
| 46 | private static final HashMap literalEntries = new HashMap(); |
| 47 | private static final HashMap signatureEntries = new HashMap(); |
| 48 | private static final HashMap descriptorEntries = new HashMap(); |
| 49 | private static final HashMap memberEntries = new HashMap(); |
| 50 | |
| 51 | /** Factory for Utf8 string constants. |
| 52 | * Used for well-known strings like "SourceFile", "<init>", etc. |
| 53 | * Also used to back up more complex constant pool entries, like Class. |
| 54 | */ |
| 55 | public static synchronized Utf8Entry getUtf8Entry(String value) { |
| 56 | Utf8Entry e = (Utf8Entry) utf8Entries.get(value); |
| 57 | if (e == null) { |
| 58 | e = new Utf8Entry(value); |
| 59 | utf8Entries.put(e.stringValue(), e); |
| 60 | } |
| 61 | return e; |
| 62 | } |
| 63 | /** Factory for Class constants. */ |
| 64 | public static synchronized ClassEntry getClassEntry(String name) { |
| 65 | ClassEntry e = (ClassEntry) classEntries.get(name); |
| 66 | if (e == null) { |
| 67 | e = (ClassEntry) new ClassEntry(getUtf8Entry(name)); |
| 68 | assert(name.equals(e.stringValue())); |
| 69 | classEntries.put(e.stringValue(), e); |
| 70 | } |
| 71 | return e; |
| 72 | } |
| 73 | /** Factory for literal constants (String, Integer, etc.). */ |
| 74 | public static synchronized LiteralEntry getLiteralEntry(Comparable value) { |
| 75 | LiteralEntry e = (LiteralEntry) literalEntries.get(value); |
| 76 | if (e == null) { |
| 77 | if (value instanceof String) |
| 78 | e = new StringEntry(getUtf8Entry((String)value)); |
| 79 | else |
| 80 | e = new NumberEntry((Number)value); |
| 81 | literalEntries.put(value, e); |
| 82 | } |
| 83 | return e; |
| 84 | } |
| 85 | /** Factory for literal constants (String, Integer, etc.). */ |
| 86 | public static synchronized StringEntry getStringEntry(String value) { |
| 87 | return (StringEntry) getLiteralEntry(value); |
| 88 | } |
| 89 | |
| 90 | /** Factory for signature (type) constants. */ |
| 91 | public static synchronized SignatureEntry getSignatureEntry(String type) { |
| 92 | SignatureEntry e = (SignatureEntry) signatureEntries.get(type); |
| 93 | if (e == null) { |
| 94 | e = new SignatureEntry(type); |
| 95 | assert(e.stringValue().equals(type)); |
| 96 | signatureEntries.put(type, e); |
| 97 | } |
| 98 | return e; |
| 99 | } |
| 100 | // Convenience overloading. |
| 101 | public static SignatureEntry getSignatureEntry(Utf8Entry formRef, ClassEntry[] classRefs) { |
| 102 | return getSignatureEntry(SignatureEntry.stringValueOf(formRef, classRefs)); |
| 103 | } |
| 104 | |
| 105 | /** Factory for descriptor (name-and-type) constants. */ |
| 106 | public static synchronized DescriptorEntry getDescriptorEntry(Utf8Entry nameRef, SignatureEntry typeRef) { |
| 107 | String key = DescriptorEntry.stringValueOf(nameRef, typeRef); |
| 108 | DescriptorEntry e = (DescriptorEntry) descriptorEntries.get(key); |
| 109 | if (e == null) { |
| 110 | e = new DescriptorEntry(nameRef, typeRef); |
| 111 | assert(e.stringValue().equals(key)) |
| 112 | : (e.stringValue()+" != "+(key)); |
| 113 | descriptorEntries.put(key, e); |
| 114 | } |
| 115 | return e; |
| 116 | } |
| 117 | // Convenience overloading. |
| 118 | public static DescriptorEntry getDescriptorEntry(Utf8Entry nameRef, Utf8Entry typeRef) { |
| 119 | return getDescriptorEntry(nameRef, getSignatureEntry(typeRef.stringValue())); |
| 120 | } |
| 121 | |
| 122 | /** Factory for member reference constants. */ |
| 123 | public static synchronized MemberEntry getMemberEntry(byte tag, ClassEntry classRef, DescriptorEntry descRef) { |
| 124 | String key = MemberEntry.stringValueOf(tag, classRef, descRef); |
| 125 | MemberEntry e = (MemberEntry) memberEntries.get(key); |
| 126 | if (e == null) { |
| 127 | e = new MemberEntry(tag, classRef, descRef); |
| 128 | assert(e.stringValue().equals(key)) |
| 129 | : (e.stringValue()+" != "+(key)); |
| 130 | memberEntries.put(key, e); |
| 131 | } |
| 132 | return e; |
| 133 | } |
| 134 | |
| 135 | |
| 136 | /** Entries in the constant pool. */ |
| 137 | public static abstract |
| 138 | class Entry implements Comparable { |
| 139 | protected final byte tag; // a CONSTANT_foo code |
| 140 | protected int valueHash; // cached hashCode |
| 141 | |
| 142 | protected Entry(byte tag) { |
| 143 | this.tag = tag; |
| 144 | } |
| 145 | |
| 146 | public final byte getTag() { |
| 147 | return tag; |
| 148 | } |
| 149 | |
| 150 | public Entry getRef(int i) { |
| 151 | return null; |
| 152 | } |
| 153 | |
| 154 | public boolean sameTagAs(Object o) { |
| 155 | return (o instanceof Entry) && ((Entry)o).tag == tag; |
| 156 | } |
| 157 | public boolean eq(Entry that) { // same reference |
| 158 | assert(that != null); |
| 159 | return this == that || this.equals(that); |
| 160 | } |
| 161 | |
| 162 | // Equality of Entries is value-based. |
| 163 | public abstract boolean equals(Object o); |
| 164 | public final int hashCode() { |
| 165 | if (valueHash == 0) { |
| 166 | valueHash = computeValueHash(); |
| 167 | if (valueHash == 0) valueHash = 1; |
| 168 | } |
| 169 | return valueHash; |
| 170 | } |
| 171 | protected abstract int computeValueHash(); |
| 172 | |
| 173 | public abstract int compareTo(Object o); |
| 174 | |
| 175 | protected int superCompareTo(Object o) { |
| 176 | Entry that = (Entry) o; |
| 177 | |
| 178 | if (this.tag != that.tag) { |
| 179 | return TAG_ORDER[this.tag] - TAG_ORDER[that.tag]; |
| 180 | } |
| 181 | |
| 182 | return 0; // subclasses must refine this |
| 183 | } |
| 184 | |
| 185 | public final boolean isDoubleWord() { |
| 186 | return tag == CONSTANT_Double || tag == CONSTANT_Long; |
| 187 | } |
| 188 | |
| 189 | public final boolean tagMatches(int tag) { |
| 190 | return (this.tag == tag); |
| 191 | } |
| 192 | |
| 193 | public String toString() { |
| 194 | String valuePrint = stringValue(); |
| 195 | if (verbose() > 4) { |
| 196 | if (valueHash != 0) |
| 197 | valuePrint += " hash="+valueHash; |
| 198 | valuePrint += " id="+System.identityHashCode(this); |
| 199 | } |
| 200 | return tagName(tag)+"="+valuePrint; |
| 201 | } |
| 202 | public abstract String stringValue(); |
| 203 | } |
| 204 | |
| 205 | public static |
| 206 | class Utf8Entry extends Entry { |
| 207 | final String value; |
| 208 | |
| 209 | Utf8Entry(String value) { |
| 210 | super(CONSTANT_Utf8); |
| 211 | this.value = value.intern(); |
| 212 | hashCode(); // force computation of valueHash |
| 213 | } |
| 214 | protected int computeValueHash() { |
| 215 | return value.hashCode(); |
| 216 | } |
| 217 | public boolean equals(Object o) { |
| 218 | if (!sameTagAs(o)) return false; |
| 219 | // Use reference equality of interned strings: |
| 220 | return ((Utf8Entry)o).value == value; |
| 221 | } |
| 222 | public int compareTo(Object o) { |
| 223 | int x = superCompareTo(o); |
| 224 | if (x == 0) { |
| 225 | x = value.compareTo(((Utf8Entry)o).value); |
| 226 | } |
| 227 | return x; |
| 228 | } |
| 229 | public String stringValue() { |
| 230 | return value; |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | static boolean isMemberTag(byte tag) { |
| 235 | switch (tag) { |
| 236 | case CONSTANT_Fieldref: |
| 237 | case CONSTANT_Methodref: |
| 238 | case CONSTANT_InterfaceMethodref: |
| 239 | return true; |
| 240 | } |
| 241 | return false; |
| 242 | } |
| 243 | |
| 244 | static byte numberTagOf(Number value) { |
| 245 | if (value instanceof Integer) return CONSTANT_Integer; |
| 246 | if (value instanceof Float) return CONSTANT_Float; |
| 247 | if (value instanceof Long) return CONSTANT_Long; |
| 248 | if (value instanceof Double) return CONSTANT_Double; |
| 249 | throw new RuntimeException("bad literal value "+value); |
| 250 | } |
| 251 | |
| 252 | public static abstract |
| 253 | class LiteralEntry extends Entry { |
| 254 | protected LiteralEntry(byte tag) { |
| 255 | super(tag); |
| 256 | } |
| 257 | |
| 258 | public abstract Comparable literalValue(); |
| 259 | } |
| 260 | |
| 261 | public static |
| 262 | class NumberEntry extends LiteralEntry { |
| 263 | final Number value; |
| 264 | NumberEntry(Number value) { |
| 265 | super(numberTagOf(value)); |
| 266 | this.value = value; |
| 267 | hashCode(); // force computation of valueHash |
| 268 | } |
| 269 | protected int computeValueHash() { |
| 270 | return value.hashCode(); |
| 271 | } |
| 272 | |
| 273 | public boolean equals(Object o) { |
| 274 | if (!sameTagAs(o)) return false; |
| 275 | return (((NumberEntry)o).value).equals(value); |
| 276 | } |
| 277 | public int compareTo(Object o) { |
| 278 | int x = superCompareTo(o); |
| 279 | if (x == 0) { |
| 280 | x = ((Comparable)value).compareTo(((NumberEntry)o).value); |
| 281 | } |
| 282 | return x; |
| 283 | } |
| 284 | public Number numberValue() { |
| 285 | return value; |
| 286 | } |
| 287 | public Comparable literalValue() { |
| 288 | return (Comparable) value; |
| 289 | } |
| 290 | public String stringValue() { |
| 291 | return value.toString(); |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | public static |
| 296 | class StringEntry extends LiteralEntry { |
| 297 | final Utf8Entry ref; |
| 298 | public Entry getRef(int i) { return i == 0 ? ref : null; } |
| 299 | |
| 300 | StringEntry(Entry ref) { |
| 301 | super(CONSTANT_String); |
| 302 | this.ref = (Utf8Entry) ref; |
| 303 | hashCode(); // force computation of valueHash |
| 304 | } |
| 305 | protected int computeValueHash() { |
| 306 | return ref.hashCode() + tag; |
| 307 | } |
| 308 | public boolean equals(Object o) { |
| 309 | if (!sameTagAs(o)) return false; |
| 310 | return ((StringEntry)o).ref.eq(ref); |
| 311 | } |
| 312 | public int compareTo(Object o) { |
| 313 | int x = superCompareTo(o); |
| 314 | if (x == 0) { |
| 315 | x = ref.compareTo(((StringEntry)o).ref); |
| 316 | } |
| 317 | return x; |
| 318 | } |
| 319 | public Comparable literalValue() { |
| 320 | return ref.stringValue(); |
| 321 | } |
| 322 | public String stringValue() { |
| 323 | return ref.stringValue(); |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | public static |
| 328 | class ClassEntry extends Entry { |
| 329 | final Utf8Entry ref; |
| 330 | public Entry getRef(int i) { return i == 0 ? ref : null; } |
| 331 | |
| 332 | protected int computeValueHash() { |
| 333 | return ref.hashCode() + tag; |
| 334 | } |
| 335 | ClassEntry(Entry ref) { |
| 336 | super(CONSTANT_Class); |
| 337 | this.ref = (Utf8Entry) ref; |
| 338 | hashCode(); // force computation of valueHash |
| 339 | } |
| 340 | public boolean equals(Object o) { |
| 341 | if (!sameTagAs(o)) return false; |
| 342 | return ((ClassEntry)o).ref.eq(ref); |
| 343 | } |
| 344 | public int compareTo(Object o) { |
| 345 | int x = superCompareTo(o); |
| 346 | if (x == 0) { |
| 347 | x = ref.compareTo(((ClassEntry)o).ref); |
| 348 | } |
| 349 | return x; |
| 350 | } |
| 351 | public String stringValue() { |
| 352 | return ref.stringValue(); |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | public static |
| 357 | class DescriptorEntry extends Entry { |
| 358 | final Utf8Entry nameRef; |
| 359 | final SignatureEntry typeRef; |
| 360 | public Entry getRef(int i) { |
| 361 | if (i == 0) return nameRef; |
| 362 | if (i == 1) return typeRef; |
| 363 | return null; |
| 364 | } |
| 365 | DescriptorEntry(Entry nameRef, Entry typeRef) { |
| 366 | super(CONSTANT_NameandType); |
| 367 | if (typeRef instanceof Utf8Entry) { |
| 368 | typeRef = getSignatureEntry(typeRef.stringValue()); |
| 369 | } |
| 370 | this.nameRef = (Utf8Entry) nameRef; |
| 371 | this.typeRef = (SignatureEntry) typeRef; |
| 372 | hashCode(); // force computation of valueHash |
| 373 | } |
| 374 | protected int computeValueHash() { |
| 375 | int hc2 = typeRef.hashCode(); |
| 376 | return (nameRef.hashCode() + (hc2 << 8)) ^ hc2; |
| 377 | } |
| 378 | public boolean equals(Object o) { |
| 379 | if (!sameTagAs(o)) return false; |
| 380 | DescriptorEntry that = (DescriptorEntry)o; |
| 381 | return this.nameRef.eq(that.nameRef) |
| 382 | && this.typeRef.eq(that.typeRef); |
| 383 | } |
| 384 | public int compareTo(Object o) { |
| 385 | int x = superCompareTo(o); |
| 386 | if (x == 0) { |
| 387 | DescriptorEntry that = (DescriptorEntry)o; |
| 388 | // Primary key is typeRef, not nameRef. |
| 389 | x = this.typeRef.compareTo(that.typeRef); |
| 390 | if (x == 0) |
| 391 | x = this.nameRef.compareTo(that.nameRef); |
| 392 | } |
| 393 | return x; |
| 394 | } |
| 395 | public String stringValue() { |
| 396 | return stringValueOf(nameRef, typeRef); |
| 397 | } |
| 398 | static |
| 399 | String stringValueOf(Entry nameRef, Entry typeRef) { |
| 400 | return typeRef.stringValue()+","+nameRef.stringValue(); |
| 401 | } |
| 402 | |
| 403 | public String prettyString() { |
| 404 | return nameRef.stringValue()+typeRef.prettyString(); |
| 405 | } |
| 406 | |
| 407 | public boolean isMethod() { |
| 408 | return typeRef.isMethod(); |
| 409 | } |
| 410 | |
| 411 | public byte getLiteralTag() { |
| 412 | return typeRef.getLiteralTag(); |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | public static |
| 417 | class MemberEntry extends Entry { |
| 418 | final ClassEntry classRef; |
| 419 | final DescriptorEntry descRef; |
| 420 | public Entry getRef(int i) { |
| 421 | if (i == 0) return classRef; |
| 422 | if (i == 1) return descRef; |
| 423 | return null; |
| 424 | } |
| 425 | protected int computeValueHash() { |
| 426 | int hc2 = descRef.hashCode(); |
| 427 | return (classRef.hashCode() + (hc2 << 8)) ^ hc2; |
| 428 | } |
| 429 | |
| 430 | MemberEntry(byte tag, ClassEntry classRef, DescriptorEntry descRef) { |
| 431 | super(tag); |
| 432 | assert(isMemberTag(tag)); |
| 433 | this.classRef = classRef; |
| 434 | this.descRef = descRef; |
| 435 | hashCode(); // force computation of valueHash |
| 436 | } |
| 437 | public boolean equals(Object o) { |
| 438 | if (!sameTagAs(o)) return false; |
| 439 | MemberEntry that = (MemberEntry)o; |
| 440 | return this.classRef.eq(that.classRef) |
| 441 | && this.descRef.eq(that.descRef); |
| 442 | } |
| 443 | public int compareTo(Object o) { |
| 444 | int x = superCompareTo(o); |
| 445 | if (x == 0) { |
| 446 | MemberEntry that = (MemberEntry)o; |
| 447 | // Primary key is classRef. |
| 448 | x = this.classRef.compareTo(that.classRef); |
| 449 | if (x == 0) |
| 450 | x = this.descRef.compareTo(that.descRef); |
| 451 | } |
| 452 | return x; |
| 453 | } |
| 454 | public String stringValue() { |
| 455 | return stringValueOf(tag, classRef, descRef); |
| 456 | } |
| 457 | static |
| 458 | String stringValueOf(byte tag, ClassEntry classRef, DescriptorEntry descRef) { |
| 459 | assert(isMemberTag(tag)); |
| 460 | String pfx; |
| 461 | switch (tag) { |
| 462 | case CONSTANT_Fieldref: pfx = "Field:"; break; |
| 463 | case CONSTANT_Methodref: pfx = "Method:"; break; |
| 464 | case CONSTANT_InterfaceMethodref: pfx = "IMethod:"; break; |
| 465 | default: pfx = tag+"???"; break; |
| 466 | } |
| 467 | return pfx+classRef.stringValue()+","+descRef.stringValue(); |
| 468 | } |
| 469 | |
| 470 | public boolean isMethod() { |
| 471 | return descRef.isMethod(); |
| 472 | } |
| 473 | } |
| 474 | |
| 475 | public static |
| 476 | class SignatureEntry extends Entry { |
| 477 | final Utf8Entry formRef; |
| 478 | final ClassEntry[] classRefs; |
| 479 | String value; |
| 480 | Utf8Entry asUtf8Entry; |
| 481 | public Entry getRef(int i) { |
| 482 | if (i == 0) return formRef; |
| 483 | return i-1 < classRefs.length ? classRefs[i-1] : null; |
| 484 | } |
| 485 | SignatureEntry(String value) { |
| 486 | super(CONSTANT_Signature); |
| 487 | value = value.intern(); // always do this |
| 488 | this.value = value; |
| 489 | String[] parts = structureSignature(value); |
| 490 | formRef = getUtf8Entry(parts[0]); |
| 491 | classRefs = new ClassEntry[parts.length-1]; |
| 492 | for (int i = 1; i < parts.length; i++) |
| 493 | classRefs[i-1] = getClassEntry(parts[i]); |
| 494 | hashCode(); // force computation of valueHash |
| 495 | } |
| 496 | protected int computeValueHash() { |
| 497 | stringValue(); // force computation of value |
| 498 | return value.hashCode() + tag; |
| 499 | } |
| 500 | |
| 501 | public Utf8Entry asUtf8Entry() { |
| 502 | if (asUtf8Entry == null) { |
| 503 | asUtf8Entry = getUtf8Entry(stringValue()); |
| 504 | } |
| 505 | return asUtf8Entry; |
| 506 | } |
| 507 | |
| 508 | public boolean equals(Object o) { |
| 509 | if (!sameTagAs(o)) return false; |
| 510 | return ((SignatureEntry)o).value == value; |
| 511 | } |
| 512 | public int compareTo(Object o) { |
| 513 | int x = superCompareTo(o); |
| 514 | if (x == 0) { |
| 515 | SignatureEntry that = (SignatureEntry)o; |
| 516 | x = compareSignatures(this.value, that.value); |
| 517 | } |
| 518 | return x; |
| 519 | } |
| 520 | public String stringValue() { |
| 521 | if (value == null) { |
| 522 | value = stringValueOf(formRef, classRefs); |
| 523 | } |
| 524 | return value; |
| 525 | } |
| 526 | static |
| 527 | String stringValueOf(Utf8Entry formRef, ClassEntry[] classRefs) { |
| 528 | String[] parts = new String[1+classRefs.length]; |
| 529 | parts[0] = formRef.stringValue(); |
| 530 | for (int i = 1; i < parts.length; i++) |
| 531 | parts[i] = classRefs[i-1].stringValue(); |
| 532 | return flattenSignature(parts).intern(); |
| 533 | } |
| 534 | |
| 535 | public int computeSize(boolean countDoublesTwice) { |
| 536 | String form = formRef.stringValue(); |
| 537 | int min = 0; |
| 538 | int max = 1; |
| 539 | if (isMethod()) { |
| 540 | min = 1; |
| 541 | max = form.indexOf(')'); |
| 542 | } |
| 543 | int size = 0; |
| 544 | for (int i = min; i < max; i++) { |
| 545 | switch (form.charAt(i)) { |
| 546 | case 'D': |
| 547 | case 'J': |
| 548 | if (countDoublesTwice) size++; |
| 549 | break; |
| 550 | case '[': |
| 551 | // Skip rest of array info. |
| 552 | while (form.charAt(i) == '[') ++i; |
| 553 | break; |
| 554 | case ';': |
| 555 | continue; |
| 556 | default: |
| 557 | assert(0 <= JAVA_SIGNATURE_CHARS.indexOf(form.charAt(i))); |
| 558 | break; |
| 559 | } |
| 560 | size++; |
| 561 | } |
| 562 | return size; |
| 563 | } |
| 564 | public boolean isMethod() { |
| 565 | return formRef.stringValue().charAt(0) == '('; |
| 566 | } |
| 567 | public byte getLiteralTag() { |
| 568 | switch (formRef.stringValue().charAt(0)) { |
| 569 | case 'L': return CONSTANT_String; |
| 570 | case 'I': return CONSTANT_Integer; |
| 571 | case 'J': return CONSTANT_Long; |
| 572 | case 'F': return CONSTANT_Float; |
| 573 | case 'D': return CONSTANT_Double; |
| 574 | case 'B': case 'S': case 'C': case 'Z': |
| 575 | return CONSTANT_Integer; |
| 576 | } |
| 577 | assert(false); |
| 578 | return CONSTANT_None; |
| 579 | } |
| 580 | public String prettyString() { |
| 581 | String s; |
| 582 | if (isMethod()) { |
| 583 | s = formRef.stringValue(); |
| 584 | s = s.substring(0, 1+s.indexOf(')')); |
| 585 | } else { |
| 586 | s = "/" + formRef.stringValue(); |
| 587 | } |
| 588 | int i; |
| 589 | while ((i = s.indexOf(';')) >= 0) |
| 590 | s = s.substring(0,i) + s.substring(i+1); |
| 591 | return s; |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | static int compareSignatures(String s1, String s2) { |
| 596 | return compareSignatures(s1, s2, null, null); |
| 597 | } |
| 598 | static int compareSignatures(String s1, String s2, String[] p1, String[] p2) { |
| 599 | final int S1_COMES_FIRST = -1; |
| 600 | final int S2_COMES_FIRST = +1; |
| 601 | char c1 = s1.charAt(0); |
| 602 | char c2 = s2.charAt(0); |
| 603 | // fields before methods (because there are fewer of them) |
| 604 | if (c1 != '(' && c2 == '(') return S1_COMES_FIRST; |
| 605 | if (c2 != '(' && c1 == '(') return S2_COMES_FIRST; |
| 606 | if (p1 == null) p1 = structureSignature(s1); |
| 607 | if (p2 == null) p2 = structureSignature(s2); |
| 608 | /* |
| 609 | // non-classes before classes (because there are fewer of them) |
| 610 | if (p1.length == 1 && p2.length > 1) return S1_COMES_FIRST; |
| 611 | if (p2.length == 1 && p1.length > 1) return S2_COMES_FIRST; |
| 612 | // all else being equal, use the same comparison as for Utf8 strings |
| 613 | return s1.compareTo(s2); |
| 614 | */ |
| 615 | if (p1.length != p2.length) return p1.length - p2.length; |
| 616 | int length = p1.length; |
| 617 | for (int i = length; --i >= 0; ) { |
| 618 | int res = p1[i].compareTo(p2[i]); |
| 619 | if (res != 0) return res; |
| 620 | } |
| 621 | assert(s1.equals(s2)); |
| 622 | return 0; |
| 623 | } |
| 624 | |
| 625 | static int countClassParts(Utf8Entry formRef) { |
| 626 | int num = 0; |
| 627 | String s = formRef.stringValue(); |
| 628 | for (int i = 0; i < s.length(); i++) { |
| 629 | if (s.charAt(i) == 'L') ++num; |
| 630 | } |
| 631 | return num; |
| 632 | } |
| 633 | |
| 634 | static String flattenSignature(String[] parts) { |
| 635 | String form = parts[0]; |
| 636 | if (parts.length == 1) return form; |
| 637 | int len = form.length(); |
| 638 | for (int i = 1; i < parts.length; i++) { |
| 639 | len += parts[i].length(); |
| 640 | } |
| 641 | char[] sig = new char[len]; |
| 642 | int j = 0; |
| 643 | int k = 1; |
| 644 | for (int i = 0; i < form.length(); i++) { |
| 645 | char ch = form.charAt(i); |
| 646 | sig[j++] = ch; |
| 647 | if (ch == 'L') { |
| 648 | String cls = parts[k++]; |
| 649 | cls.getChars(0, cls.length(), sig, j); |
| 650 | j += cls.length(); |
| 651 | //sig[j++] = ';'; |
| 652 | } |
| 653 | } |
| 654 | assert(j == len); |
| 655 | assert(k == parts.length); |
| 656 | return new String(sig); |
| 657 | } |
| 658 | |
| 659 | static private int skipClassNameChars(String sig, int i) { |
| 660 | int len = sig.length(); |
| 661 | for (; i < len; i++) { |
| 662 | char ch = sig.charAt(i); |
| 663 | if (ch <= ' ') break; |
| 664 | if (ch >= ';' && ch <= '@') break; |
| 665 | } |
| 666 | return i; |
| 667 | } |
| 668 | |
| 669 | static String[] structureSignature(String sig) { |
| 670 | sig = sig.intern(); |
| 671 | |
| 672 | int formLen = 0; |
| 673 | int nparts = 1; |
| 674 | for (int i = 0; i < sig.length(); i++) { |
| 675 | char ch = sig.charAt(i); |
| 676 | formLen++; |
| 677 | if (ch == 'L') { |
| 678 | nparts++; |
| 679 | int i2 = skipClassNameChars(sig, i+1); |
| 680 | i = i2-1; // keep the semicolon in the form |
| 681 | int i3 = sig.indexOf('<', i+1); |
| 682 | if (i3 > 0 && i3 < i2) |
| 683 | i = i3-1; |
| 684 | } |
| 685 | } |
| 686 | char[] form = new char[formLen]; |
| 687 | if (nparts == 1) { |
| 688 | String[] parts = { sig }; |
| 689 | return parts; |
| 690 | } |
| 691 | String[] parts = new String[nparts]; |
| 692 | int j = 0; |
| 693 | int k = 1; |
| 694 | for (int i = 0; i < sig.length(); i++) { |
| 695 | char ch = sig.charAt(i); |
| 696 | form[j++] = ch; |
| 697 | if (ch == 'L') { |
| 698 | int i2 = skipClassNameChars(sig, i+1); |
| 699 | parts[k++] = sig.substring(i+1, i2); |
| 700 | i = i2; |
| 701 | --i; // keep the semicolon in the form |
| 702 | } |
| 703 | } |
| 704 | assert(j == formLen); |
| 705 | assert(k == parts.length); |
| 706 | parts[0] = new String(form); |
| 707 | //assert(flattenSignature(parts).equals(sig)); |
| 708 | return parts; |
| 709 | } |
| 710 | |
| 711 | // Handy constants: |
| 712 | protected static final Entry[] noRefs = {}; |
| 713 | protected static final ClassEntry[] noClassRefs = {}; |
| 714 | |
| 715 | /** An Index is a mapping between CP entries and small integers. */ |
| 716 | public static |
| 717 | class Index extends AbstractList { |
| 718 | protected String debugName; |
| 719 | protected Entry[] cpMap; |
| 720 | protected boolean flattenSigs; |
| 721 | protected Entry[] getMap() { |
| 722 | return cpMap; |
| 723 | } |
| 724 | protected Index(String debugName) { |
| 725 | this.debugName = debugName; |
| 726 | } |
| 727 | protected Index(String debugName, Entry[] cpMap) { |
| 728 | this(debugName); |
| 729 | setMap(cpMap); |
| 730 | } |
| 731 | protected void setMap(Entry[] cpMap) { |
| 732 | clearIndex(); |
| 733 | this.cpMap = cpMap; |
| 734 | } |
| 735 | protected Index(String debugName, Collection cpMapList) { |
| 736 | this(debugName); |
| 737 | setMap(cpMapList); |
| 738 | } |
| 739 | protected void setMap(Collection cpMapList) { |
| 740 | cpMap = new Entry[cpMapList.size()]; |
| 741 | cpMapList.toArray(cpMap); |
| 742 | setMap(cpMap); |
| 743 | } |
| 744 | public int size() { |
| 745 | return cpMap.length; |
| 746 | } |
| 747 | public Object get(int i) { |
| 748 | return cpMap[i]; |
| 749 | } |
| 750 | public Entry getEntry(int i) { |
| 751 | // same as get(), with covariant return type |
| 752 | return cpMap[i]; |
| 753 | } |
| 754 | |
| 755 | // Find index of e in cpMap, or return -1 if none. |
| 756 | // |
| 757 | // As a special hack, if flattenSigs, signatures are |
| 758 | // treated as equivalent entries of cpMap. This is wrong |
| 759 | // fron a Collection point of view, because contains() |
| 760 | // reports true for signatures, but the iterator() |
| 761 | // never produces them! |
| 762 | private int findIndexOf(Entry e) { |
| 763 | if (indexKey == null) initializeIndex(); |
| 764 | int probe = findIndexLocation(e); |
| 765 | if (indexKey[probe] != e) { |
| 766 | if (flattenSigs && e.tag == CONSTANT_Signature) { |
| 767 | SignatureEntry se = (SignatureEntry) e; |
| 768 | return findIndexOf(se.asUtf8Entry()); |
| 769 | } |
| 770 | return -1; |
| 771 | } |
| 772 | int index = indexValue[probe]; |
| 773 | assert(e.equals(cpMap[index])); |
| 774 | return index; |
| 775 | } |
| 776 | public boolean contains(Entry e) { |
| 777 | return findIndexOf(e) >= 0; |
| 778 | } |
| 779 | // Find index of e in cpMap. Should not return -1. |
| 780 | public int indexOf(Entry e) { |
| 781 | int index = findIndexOf(e); |
| 782 | if (index < 0 && verbose() > 0) { |
| 783 | System.out.println("not found: "+e); |
| 784 | System.out.println(" in: "+this.dumpString()); |
| 785 | Thread.dumpStack(); |
| 786 | } |
| 787 | assert(index >= 0); |
| 788 | return index; |
| 789 | } |
| 790 | public boolean contains(Object e) { |
| 791 | return findIndexOf((Entry)e) >= 0; |
| 792 | } |
| 793 | public int indexOf(Object e) { |
| 794 | return findIndexOf((Entry)e); |
| 795 | } |
| 796 | public int lastIndexOf(Object e) { |
| 797 | return indexOf(e); |
| 798 | } |
| 799 | |
| 800 | public boolean assertIsSorted() { |
| 801 | for (int i = 1; i < cpMap.length; i++) { |
| 802 | if (cpMap[i-1].compareTo(cpMap[i]) > 0) { |
| 803 | System.out.println("Not sorted at "+(i-1)+"/"+i+": "+this.dumpString()); |
| 804 | return false; |
| 805 | } |
| 806 | } |
| 807 | return true; |
| 808 | } |
| 809 | |
| 810 | // internal hash table |
| 811 | protected Entry[] indexKey; |
| 812 | protected int[] indexValue; |
| 813 | protected void clearIndex() { |
| 814 | indexKey = null; |
| 815 | indexValue = null; |
| 816 | } |
| 817 | private int findIndexLocation(Entry e) { |
| 818 | int size = indexKey.length; |
| 819 | int hash = e.hashCode(); |
| 820 | int probe = hash & (size - 1); |
| 821 | int stride = ((hash >>> 8) | 1) & (size - 1); |
| 822 | for (;;) { |
| 823 | Entry e1 = indexKey[probe]; |
| 824 | if (e1 == e || e1 == null) |
| 825 | return probe; |
| 826 | probe += stride; |
| 827 | if (probe >= size) probe -= size; |
| 828 | } |
| 829 | } |
| 830 | private void initializeIndex() { |
| 831 | if (verbose() > 2) |
| 832 | System.out.println("initialize Index "+debugName+" ["+size()+"]"); |
| 833 | int hsize0 = (int)((cpMap.length + 10) * 1.5); |
| 834 | int hsize = 1; |
| 835 | while (hsize < hsize0) hsize <<= 1; |
| 836 | indexKey = new Entry[hsize]; |
| 837 | indexValue = new int[hsize]; |
| 838 | for (int i = 0; i < cpMap.length; i++) { |
| 839 | Entry e = cpMap[i]; |
| 840 | if (e == null) continue; |
| 841 | int probe = findIndexLocation(e); |
| 842 | assert(indexKey[probe] == null); // e has unique index |
| 843 | indexKey[probe] = e; |
| 844 | indexValue[probe] = i; |
| 845 | } |
| 846 | } |
| 847 | public Object[] toArray(Object[] a) { |
| 848 | int sz = size(); |
| 849 | if (a.length < sz) return super.toArray(a); |
| 850 | System.arraycopy(cpMap, 0, a, 0, sz); |
| 851 | if (a.length > sz) a[sz] = null; |
| 852 | return a; |
| 853 | } |
| 854 | public Object[] toArray() { |
| 855 | return toArray(new Entry[size()]); |
| 856 | } |
| 857 | public Object clone() { |
| 858 | return new Index(debugName, (Entry[]) cpMap.clone()); |
| 859 | } |
| 860 | public String toString() { |
| 861 | return "Index "+debugName+" ["+size()+"]"; |
| 862 | } |
| 863 | public String dumpString() { |
| 864 | String s = toString(); |
| 865 | s += " {\n"; |
| 866 | for (int i = 0; i < cpMap.length; i++) { |
| 867 | s += " "+i+": "+cpMap[i]+"\n"; |
| 868 | } |
| 869 | s += "}"; |
| 870 | return s; |
| 871 | } |
| 872 | } |
| 873 | |
| 874 | // Index methods. |
| 875 | |
| 876 | public static |
| 877 | Index makeIndex(String debugName, Entry[] cpMap) { |
| 878 | return new Index(debugName, cpMap); |
| 879 | } |
| 880 | |
| 881 | public static |
| 882 | Index makeIndex(String debugName, Collection cpMapList) { |
| 883 | return new Index(debugName, cpMapList); |
| 884 | } |
| 885 | |
| 886 | /** Sort this index (destructively) into canonical order. */ |
| 887 | public static |
| 888 | void sort(Index ix) { |
| 889 | // %%% Should move this into class Index. |
| 890 | ix.clearIndex(); |
| 891 | Arrays.sort(ix.cpMap); |
| 892 | if (verbose() > 2) |
| 893 | System.out.println("sorted "+ix.dumpString()); |
| 894 | } |
| 895 | |
| 896 | /** Return a set of indexes partitioning these entries. |
| 897 | * The keys array must of length this.size(), and marks entries. |
| 898 | * The result array is as long as one plus the largest key value. |
| 899 | * Entries with a negative key are dropped from the partition. |
| 900 | */ |
| 901 | public static |
| 902 | Index[] partition(Index ix, int[] keys) { |
| 903 | // %%% Should move this into class Index. |
| 904 | ArrayList parts = new ArrayList(); |
| 905 | Entry[] cpMap = ix.cpMap; |
| 906 | assert(keys.length == cpMap.length); |
| 907 | for (int i = 0; i < keys.length; i++) { |
| 908 | int key = keys[i]; |
| 909 | if (key < 0) continue; |
| 910 | while (key >= parts.size()) parts.add(null); |
| 911 | ArrayList part = (ArrayList) parts.get(key); |
| 912 | if (part == null) { |
| 913 | parts.set(key, part = new ArrayList()); |
| 914 | } |
| 915 | part.add(cpMap[i]); |
| 916 | } |
| 917 | Index[] indexes = new Index[parts.size()]; |
| 918 | for (int key = 0; key < indexes.length; key++) { |
| 919 | ArrayList part = (ArrayList) parts.get(key); |
| 920 | if (part == null) continue; |
| 921 | indexes[key] = new Index(ix.debugName+"/part#"+key, part); |
| 922 | assert(indexes[key].indexOf(part.get(0)) == 0); |
| 923 | } |
| 924 | return indexes; |
| 925 | } |
| 926 | public static |
| 927 | Index[] partitionByTag(Index ix) { |
| 928 | // Partition by tag. |
| 929 | Entry[] cpMap = ix.cpMap; |
| 930 | int[] keys = new int[cpMap.length]; |
| 931 | for (int i = 0; i < keys.length; i++) { |
| 932 | Entry e = cpMap[i]; |
| 933 | keys[i] = (e == null)? -1: e.tag; |
| 934 | } |
| 935 | Index[] byTag = partition(ix, keys); |
| 936 | for (int tag = 0; tag < byTag.length; tag++) { |
| 937 | if (byTag[tag] == null) continue; |
| 938 | byTag[tag].debugName = tagName(tag); |
| 939 | } |
| 940 | if (byTag.length < CONSTANT_Limit) { |
| 941 | Index[] longer = new Index[CONSTANT_Limit]; |
| 942 | System.arraycopy(byTag, 0, longer, 0, byTag.length); |
| 943 | byTag = longer; |
| 944 | } |
| 945 | return byTag; |
| 946 | } |
| 947 | |
| 948 | /** Coherent group of constant pool indexes. */ |
| 949 | public static |
| 950 | class IndexGroup { |
| 951 | private Index indexUntyped; |
| 952 | private Index[] indexByTag = new Index[CONSTANT_Limit]; |
| 953 | private int[] untypedFirstIndexByTag; |
| 954 | private int totalSize; |
| 955 | private Index[][] indexByTagAndClass; |
| 956 | |
| 957 | /** Index of all CP entries of all types, in definition order. */ |
| 958 | public Index getUntypedIndex() { |
| 959 | if (indexUntyped == null) { |
| 960 | untypedIndexOf(null); // warm up untypedFirstIndexByTag |
| 961 | Entry[] cpMap = new Entry[totalSize]; |
| 962 | for (int tag = 0; tag < indexByTag.length; tag++) { |
| 963 | Index ix = indexByTag[tag]; |
| 964 | if (ix == null) continue; |
| 965 | int ixLen = ix.cpMap.length; |
| 966 | if (ixLen == 0) continue; |
| 967 | int fillp = untypedFirstIndexByTag[tag]; |
| 968 | assert(cpMap[fillp] == null); |
| 969 | assert(cpMap[fillp+ixLen-1] == null); |
| 970 | System.arraycopy(ix.cpMap, 0, cpMap, fillp, ixLen); |
| 971 | } |
| 972 | indexUntyped = new Index("untyped", cpMap); |
| 973 | } |
| 974 | return indexUntyped; |
| 975 | } |
| 976 | |
| 977 | public int untypedIndexOf(Entry e) { |
| 978 | if (untypedFirstIndexByTag == null) { |
| 979 | untypedFirstIndexByTag = new int[CONSTANT_Limit]; |
| 980 | int fillp = 0; |
| 981 | for (int i = 0; i < TAGS_IN_ORDER.length; i++) { |
| 982 | byte tag = TAGS_IN_ORDER[i]; |
| 983 | Index ix = indexByTag[tag]; |
| 984 | if (ix == null) continue; |
| 985 | int ixLen = ix.cpMap.length; |
| 986 | untypedFirstIndexByTag[tag] = fillp; |
| 987 | fillp += ixLen; |
| 988 | } |
| 989 | totalSize = fillp; |
| 990 | } |
| 991 | if (e == null) return -1; |
| 992 | int tag = e.tag; |
| 993 | Index ix = indexByTag[tag]; |
| 994 | if (ix == null) return -1; |
| 995 | int idx = ix.findIndexOf(e); |
| 996 | if (idx >= 0) |
| 997 | idx += untypedFirstIndexByTag[tag]; |
| 998 | return idx; |
| 999 | } |
| 1000 | |
| 1001 | public void initIndexByTag(byte tag, Index ix) { |
| 1002 | assert(indexByTag[tag] == null); // do not init twice |
| 1003 | Entry[] cpMap = ix.cpMap; |
| 1004 | for (int i = 0; i < cpMap.length; i++) { |
| 1005 | // It must be a homogeneous Entry set. |
| 1006 | assert(cpMap[i].tag == tag); |
| 1007 | } |
| 1008 | if (tag == CONSTANT_Utf8) { |
| 1009 | // Special case: First Utf8 must always be empty string. |
| 1010 | assert(cpMap.length == 0 || cpMap[0].stringValue().equals("")); |
| 1011 | } |
| 1012 | indexByTag[tag] = ix; |
| 1013 | // decache indexes derived from this one: |
| 1014 | untypedFirstIndexByTag = null; |
| 1015 | indexUntyped = null; |
| 1016 | if (indexByTagAndClass != null) |
| 1017 | indexByTagAndClass[tag] = null; |
| 1018 | } |
| 1019 | |
| 1020 | /** Index of all CP entries of a given tag. */ |
| 1021 | public Index getIndexByTag(byte tag) { |
| 1022 | if (tag == CONSTANT_All) { |
| 1023 | return getUntypedIndex(); |
| 1024 | } |
| 1025 | Index ix = indexByTag[tag]; |
| 1026 | if (ix == null) { |
| 1027 | // Make an empty one by default. |
| 1028 | ix = new Index(tagName(tag), new Entry[0]); |
| 1029 | indexByTag[tag] = ix; |
| 1030 | } |
| 1031 | return ix; |
| 1032 | } |
| 1033 | |
| 1034 | /** Index of all CP entries of a given tag and class. */ |
| 1035 | public Index getMemberIndex(byte tag, ClassEntry classRef) { |
| 1036 | if (indexByTagAndClass == null) |
| 1037 | indexByTagAndClass = new Index[CONSTANT_Limit][]; |
| 1038 | Index allClasses = getIndexByTag(CONSTANT_Class); |
| 1039 | Index[] perClassIndexes = indexByTagAndClass[tag]; |
| 1040 | if (perClassIndexes == null) { |
| 1041 | // Create the partition now. |
| 1042 | // Divide up all entries of the given tag according to their class. |
| 1043 | Index allMembers = getIndexByTag(tag); |
| 1044 | int[] whichClasses = new int[allMembers.size()]; |
| 1045 | for (int i = 0; i < whichClasses.length; i++) { |
| 1046 | MemberEntry e = (MemberEntry) allMembers.get(i); |
| 1047 | int whichClass = allClasses.indexOf(e.classRef); |
| 1048 | whichClasses[i] = whichClass; |
| 1049 | } |
| 1050 | perClassIndexes = partition(allMembers, whichClasses); |
| 1051 | for (int i = 0; i < perClassIndexes.length; i++) |
| 1052 | assert(perClassIndexes[i]==null |
| 1053 | || perClassIndexes[i].assertIsSorted()); |
| 1054 | indexByTagAndClass[tag] = perClassIndexes; |
| 1055 | } |
| 1056 | int whichClass = allClasses.indexOf(classRef); |
| 1057 | return perClassIndexes[whichClass]; |
| 1058 | } |
| 1059 | |
| 1060 | // Given the sequence of all methods of the given name and class, |
| 1061 | // produce the ordinal of this particular given overloading. |
| 1062 | public int getOverloadingIndex(MemberEntry methodRef) { |
| 1063 | Index ix = getMemberIndex(methodRef.tag, methodRef.classRef); |
| 1064 | Utf8Entry nameRef = methodRef.descRef.nameRef; |
| 1065 | int ord = 0; |
| 1066 | for (int i = 0; i < ix.cpMap.length; i++) { |
| 1067 | MemberEntry e = (MemberEntry) ix.cpMap[i]; |
| 1068 | if (e.equals(methodRef)) |
| 1069 | return ord; |
| 1070 | if (e.descRef.nameRef.equals(nameRef)) |
| 1071 | // Found a different overloading. Increment the ordinal. |
| 1072 | ord++; |
| 1073 | } |
| 1074 | throw new RuntimeException("should not reach here"); |
| 1075 | } |
| 1076 | |
| 1077 | // Inverse of getOverloadingIndex |
| 1078 | public MemberEntry getOverloadingForIndex(byte tag, ClassEntry classRef, String name, int which) { |
| 1079 | assert(name == name.intern()); |
| 1080 | Index ix = getMemberIndex(tag, classRef); |
| 1081 | int ord = 0; |
| 1082 | for (int i = 0; i < ix.cpMap.length; i++) { |
| 1083 | MemberEntry e = (MemberEntry) ix.cpMap[i]; |
| 1084 | if (e.descRef.nameRef.stringValue() == name) { |
| 1085 | if (ord == which) return e; |
| 1086 | ord++; |
| 1087 | } |
| 1088 | } |
| 1089 | throw new RuntimeException("should not reach here"); |
| 1090 | } |
| 1091 | |
| 1092 | public boolean haveNumbers() { |
| 1093 | for (byte tag = CONSTANT_Integer; tag <= CONSTANT_Double; tag++) { |
| 1094 | switch (tag) { |
| 1095 | case CONSTANT_Integer: |
| 1096 | case CONSTANT_Float: |
| 1097 | case CONSTANT_Long: |
| 1098 | case CONSTANT_Double: |
| 1099 | break; |
| 1100 | default: |
| 1101 | assert(false); |
| 1102 | } |
| 1103 | if (getIndexByTag(tag).size() > 0) return true; |
| 1104 | } |
| 1105 | return false; |
| 1106 | } |
| 1107 | |
| 1108 | } |
| 1109 | |
| 1110 | /** Close the set cpRefs under the getRef(*) relation. |
| 1111 | * Also, if flattenSigs, replace all signatures in cpRefs |
| 1112 | * by their equivalent Utf8s. |
| 1113 | * Also, discard null from cpRefs. |
| 1114 | */ |
| 1115 | public static |
| 1116 | void completeReferencesIn(Set cpRefs, boolean flattenSigs) { |
| 1117 | cpRefs.remove(null); |
| 1118 | for (ListIterator work = |
| 1119 | new ArrayList(cpRefs).listIterator(cpRefs.size()); |
| 1120 | work.hasPrevious(); ) { |
| 1121 | Entry e = (Entry) work.previous(); |
| 1122 | work.remove(); // pop stack |
| 1123 | assert(e != null); |
| 1124 | if (flattenSigs && e.tag == CONSTANT_Signature) { |
| 1125 | SignatureEntry se = (SignatureEntry) e; |
| 1126 | Utf8Entry ue = se.asUtf8Entry(); |
| 1127 | // Totally replace e by se. |
| 1128 | cpRefs.remove(se); |
| 1129 | cpRefs.add(ue); |
| 1130 | e = ue; // do not descend into the sig |
| 1131 | } |
| 1132 | // Recursively add the refs of e to cpRefs: |
| 1133 | for (int i = 0; ; i++) { |
| 1134 | Entry re = e.getRef(i); |
| 1135 | if (re == null) |
| 1136 | break; // no more refs in e |
| 1137 | if (cpRefs.add(re)) // output the ref |
| 1138 | work.add(re); // push stack, if a new ref |
| 1139 | } |
| 1140 | } |
| 1141 | } |
| 1142 | |
| 1143 | static double percent(int num, int den) { |
| 1144 | return (int)((10000.0*num)/den + 0.5) / 100.0; |
| 1145 | } |
| 1146 | |
| 1147 | public static String tagName(int tag) { |
| 1148 | switch (tag) { |
| 1149 | case CONSTANT_Utf8: return "Utf8"; |
| 1150 | case CONSTANT_Integer: return "Integer"; |
| 1151 | case CONSTANT_Float: return "Float"; |
| 1152 | case CONSTANT_Long: return "Long"; |
| 1153 | case CONSTANT_Double: return "Double"; |
| 1154 | case CONSTANT_Class: return "Class"; |
| 1155 | case CONSTANT_String: return "String"; |
| 1156 | case CONSTANT_Fieldref: return "Fieldref"; |
| 1157 | case CONSTANT_Methodref: return "Methodref"; |
| 1158 | case CONSTANT_InterfaceMethodref: return "InterfaceMethodref"; |
| 1159 | case CONSTANT_NameandType: return "NameandType"; |
| 1160 | |
| 1161 | // pseudo-tags: |
| 1162 | case CONSTANT_All: return "*All"; |
| 1163 | case CONSTANT_None: return "*None"; |
| 1164 | case CONSTANT_Signature: return "*Signature"; |
| 1165 | } |
| 1166 | return "tag#"+tag; |
| 1167 | } |
| 1168 | |
| 1169 | // archive constant pool definition order |
| 1170 | static final byte TAGS_IN_ORDER[] = { |
| 1171 | CONSTANT_Utf8, |
| 1172 | CONSTANT_Integer, // cp_Int |
| 1173 | CONSTANT_Float, |
| 1174 | CONSTANT_Long, |
| 1175 | CONSTANT_Double, |
| 1176 | CONSTANT_String, |
| 1177 | CONSTANT_Class, |
| 1178 | CONSTANT_Signature, |
| 1179 | CONSTANT_NameandType, // cp_Descr |
| 1180 | CONSTANT_Fieldref, // cp_Field |
| 1181 | CONSTANT_Methodref, // cp_Method |
| 1182 | CONSTANT_InterfaceMethodref // cp_Imethod |
| 1183 | }; |
| 1184 | static final byte TAG_ORDER[]; |
| 1185 | static { |
| 1186 | TAG_ORDER = new byte[CONSTANT_Limit]; |
| 1187 | for (int i = 0; i < TAGS_IN_ORDER.length; i++) { |
| 1188 | TAG_ORDER[TAGS_IN_ORDER[i]] = (byte)(i+1); |
| 1189 | } |
| 1190 | /* |
| 1191 | System.out.println("TAG_ORDER[] = {"); |
| 1192 | for (int i = 0; i < TAG_ORDER.length; i++) |
| 1193 | System.out.println(" "+TAG_ORDER[i]+","); |
| 1194 | System.out.println("};"); |
| 1195 | */ |
| 1196 | } |
| 1197 | } |