src/share/classes/com/sun/tools/javac/jvm/ClassWriter.java

Thu, 25 Sep 2014 17:09:23 -0700

author
vromero
date
Thu, 25 Sep 2014 17:09:23 -0700
changeset 2572
31d2a837676f
parent 2304
d0d60825c09d
child 2525
2eb010b6cb22
child 2613
272300c8b557
permissions
-rw-r--r--

8058708: java.lang.AssertionError compiling source code
Reviewed-by: jjg

duke@1 1 /*
jjg@1521 2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. 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
ohair@554 7 * published by the Free Software Foundation. Oracle designates this
duke@1 8 * particular file as subject to the "Classpath" exception as provided
ohair@554 9 * by Oracle 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 *
ohair@554 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554 22 * or visit www.oracle.com if you need additional information or have any
ohair@554 23 * questions.
duke@1 24 */
duke@1 25
duke@1 26 package com.sun.tools.javac.jvm;
duke@1 27
duke@1 28 import java.io.*;
mcimadamore@1336 29 import java.util.LinkedHashMap;
mcimadamore@1336 30 import java.util.Map;
duke@1 31 import java.util.Set;
duke@1 32 import java.util.HashSet;
duke@1 33
duke@1 34 import javax.tools.JavaFileManager;
duke@1 35 import javax.tools.FileObject;
duke@1 36 import javax.tools.JavaFileObject;
duke@1 37
duke@1 38 import com.sun.tools.javac.code.*;
jjg@657 39 import com.sun.tools.javac.code.Attribute.RetentionPolicy;
duke@1 40 import com.sun.tools.javac.code.Symbol.*;
duke@1 41 import com.sun.tools.javac.code.Type.*;
vromero@1452 42 import com.sun.tools.javac.code.Types.UniqueType;
jjg@415 43 import com.sun.tools.javac.file.BaseFileObject;
vromero@1452 44 import com.sun.tools.javac.jvm.Pool.DynamicMethod;
vromero@1452 45 import com.sun.tools.javac.jvm.Pool.Method;
vromero@1452 46 import com.sun.tools.javac.jvm.Pool.MethodHandle;
vromero@1452 47 import com.sun.tools.javac.jvm.Pool.Variable;
duke@1 48 import com.sun.tools.javac.util.*;
duke@1 49
duke@1 50 import static com.sun.tools.javac.code.Flags.*;
duke@1 51 import static com.sun.tools.javac.code.Kinds.*;
jjg@1374 52 import static com.sun.tools.javac.code.TypeTag.*;
duke@1 53 import static com.sun.tools.javac.jvm.UninitializedType.*;
jjg@1157 54 import static com.sun.tools.javac.main.Option.*;
duke@1 55 import static javax.tools.StandardLocation.CLASS_OUTPUT;
duke@1 56
duke@1 57 /** This class provides operations to map an internal symbol table graph
duke@1 58 * rooted in a ClassSymbol into a classfile.
duke@1 59 *
jjg@581 60 * <p><b>This is NOT part of any supported API.
jjg@581 61 * If you write code that depends on this, you do so at your own risk.
duke@1 62 * This code and its internal interfaces are subject to change or
duke@1 63 * deletion without notice.</b>
duke@1 64 */
duke@1 65 public class ClassWriter extends ClassFile {
duke@1 66 protected static final Context.Key<ClassWriter> classWriterKey =
duke@1 67 new Context.Key<ClassWriter>();
duke@1 68
duke@1 69 private final Options options;
duke@1 70
duke@1 71 /** Switch: verbose output.
duke@1 72 */
duke@1 73 private boolean verbose;
duke@1 74
jjg@1521 75 /** Switch: scramble private field names.
duke@1 76 */
duke@1 77 private boolean scramble;
duke@1 78
jjg@1521 79 /** Switch: scramble all field names.
duke@1 80 */
duke@1 81 private boolean scrambleAll;
duke@1 82
duke@1 83 /** Switch: retrofit mode.
duke@1 84 */
duke@1 85 private boolean retrofit;
duke@1 86
duke@1 87 /** Switch: emit source file attribute.
duke@1 88 */
duke@1 89 private boolean emitSourceFile;
duke@1 90
duke@1 91 /** Switch: generate CharacterRangeTable attribute.
duke@1 92 */
duke@1 93 private boolean genCrt;
duke@1 94
jjg@1521 95 /** Switch: describe the generated stackmap.
duke@1 96 */
duke@1 97 boolean debugstackmap;
duke@1 98
duke@1 99 /**
duke@1 100 * Target class version.
duke@1 101 */
duke@1 102 private Target target;
duke@1 103
duke@1 104 /**
duke@1 105 * Source language version.
duke@1 106 */
duke@1 107 private Source source;
duke@1 108
duke@1 109 /** Type utilities. */
duke@1 110 private Types types;
duke@1 111
duke@1 112 /** The initial sizes of the data and constant pool buffers.
jjg@1521 113 * Sizes are increased when buffers get full.
duke@1 114 */
duke@1 115 static final int DATA_BUF_SIZE = 0x0fff0;
duke@1 116 static final int POOL_BUF_SIZE = 0x1fff0;
duke@1 117
duke@1 118 /** An output buffer for member info.
duke@1 119 */
duke@1 120 ByteBuffer databuf = new ByteBuffer(DATA_BUF_SIZE);
duke@1 121
duke@1 122 /** An output buffer for the constant pool.
duke@1 123 */
duke@1 124 ByteBuffer poolbuf = new ByteBuffer(POOL_BUF_SIZE);
duke@1 125
duke@1 126 /** The constant pool.
duke@1 127 */
duke@1 128 Pool pool;
duke@1 129
duke@1 130 /** The inner classes to be written, as a set.
duke@1 131 */
duke@1 132 Set<ClassSymbol> innerClasses;
duke@1 133
duke@1 134 /** The inner classes to be written, as a queue where
duke@1 135 * enclosing classes come first.
duke@1 136 */
duke@1 137 ListBuffer<ClassSymbol> innerClassesQueue;
duke@1 138
mcimadamore@1336 139 /** The bootstrap methods to be written in the corresponding class attribute
mcimadamore@1336 140 * (one for each invokedynamic)
mcimadamore@1336 141 */
vromero@1452 142 Map<DynamicMethod, MethodHandle> bootstrapMethods;
mcimadamore@1336 143
duke@1 144 /** The log to use for verbose output.
duke@1 145 */
duke@1 146 private final Log log;
duke@1 147
duke@1 148 /** The name table. */
jjg@113 149 private final Names names;
duke@1 150
duke@1 151 /** Access to files. */
duke@1 152 private final JavaFileManager fileManager;
duke@1 153
rfield@1587 154 /** Sole signature generator */
rfield@1587 155 private final CWSignatureGenerator signatureGen;
rfield@1587 156
duke@1 157 /** The tags and constants used in compressed stackmap. */
duke@1 158 static final int SAME_FRAME_SIZE = 64;
duke@1 159 static final int SAME_LOCALS_1_STACK_ITEM_EXTENDED = 247;
duke@1 160 static final int SAME_FRAME_EXTENDED = 251;
duke@1 161 static final int FULL_FRAME = 255;
duke@1 162 static final int MAX_LOCAL_LENGTH_DIFF = 4;
duke@1 163
duke@1 164 /** Get the ClassWriter instance for this context. */
duke@1 165 public static ClassWriter instance(Context context) {
duke@1 166 ClassWriter instance = context.get(classWriterKey);
duke@1 167 if (instance == null)
duke@1 168 instance = new ClassWriter(context);
duke@1 169 return instance;
duke@1 170 }
duke@1 171
duke@1 172 /** Construct a class writer, given an options table.
duke@1 173 */
ksrini@1309 174 protected ClassWriter(Context context) {
duke@1 175 context.put(classWriterKey, this);
duke@1 176
duke@1 177 log = Log.instance(context);
jjg@113 178 names = Names.instance(context);
duke@1 179 options = Options.instance(context);
duke@1 180 target = Target.instance(context);
duke@1 181 source = Source.instance(context);
duke@1 182 types = Types.instance(context);
duke@1 183 fileManager = context.get(JavaFileManager.class);
rfield@1587 184 signatureGen = new CWSignatureGenerator(types);
duke@1 185
jjg@700 186 verbose = options.isSet(VERBOSE);
jjg@700 187 scramble = options.isSet("-scramble");
jjg@700 188 scrambleAll = options.isSet("-scrambleAll");
jjg@700 189 retrofit = options.isSet("-retrofit");
jjg@700 190 genCrt = options.isSet(XJCOV);
jjg@700 191 debugstackmap = options.isSet("debugstackmap");
duke@1 192
jjg@700 193 emitSourceFile = options.isUnset(G_CUSTOM) ||
jjg@700 194 options.isSet(G_CUSTOM, "source");
duke@1 195
duke@1 196 String dumpModFlags = options.get("dumpmodifiers");
duke@1 197 dumpClassModifiers =
duke@1 198 (dumpModFlags != null && dumpModFlags.indexOf('c') != -1);
duke@1 199 dumpFieldModifiers =
duke@1 200 (dumpModFlags != null && dumpModFlags.indexOf('f') != -1);
duke@1 201 dumpInnerClassModifiers =
duke@1 202 (dumpModFlags != null && dumpModFlags.indexOf('i') != -1);
duke@1 203 dumpMethodModifiers =
duke@1 204 (dumpModFlags != null && dumpModFlags.indexOf('m') != -1);
duke@1 205 }
duke@1 206
duke@1 207 /******************************************************************
duke@1 208 * Diagnostics: dump generated class names and modifiers
duke@1 209 ******************************************************************/
duke@1 210
duke@1 211 /** Value of option 'dumpmodifiers' is a string
duke@1 212 * indicating which modifiers should be dumped for debugging:
duke@1 213 * 'c' -- classes
duke@1 214 * 'f' -- fields
duke@1 215 * 'i' -- innerclass attributes
duke@1 216 * 'm' -- methods
duke@1 217 * For example, to dump everything:
duke@1 218 * javac -XDdumpmodifiers=cifm MyProg.java
duke@1 219 */
duke@1 220 private final boolean dumpClassModifiers; // -XDdumpmodifiers=c
duke@1 221 private final boolean dumpFieldModifiers; // -XDdumpmodifiers=f
duke@1 222 private final boolean dumpInnerClassModifiers; // -XDdumpmodifiers=i
duke@1 223 private final boolean dumpMethodModifiers; // -XDdumpmodifiers=m
duke@1 224
duke@1 225
duke@1 226 /** Return flags as a string, separated by " ".
duke@1 227 */
duke@1 228 public static String flagNames(long flags) {
jjg@816 229 StringBuilder sbuf = new StringBuilder();
duke@1 230 int i = 0;
duke@1 231 long f = flags & StandardFlags;
duke@1 232 while (f != 0) {
jjg@816 233 if ((f & 1) != 0) {
jjg@816 234 sbuf.append(" ");
jjg@816 235 sbuf.append(flagName[i]);
jjg@816 236 }
duke@1 237 f = f >> 1;
duke@1 238 i++;
duke@1 239 }
duke@1 240 return sbuf.toString();
duke@1 241 }
duke@1 242 //where
duke@1 243 private final static String[] flagName = {
duke@1 244 "PUBLIC", "PRIVATE", "PROTECTED", "STATIC", "FINAL",
duke@1 245 "SUPER", "VOLATILE", "TRANSIENT", "NATIVE", "INTERFACE",
duke@1 246 "ABSTRACT", "STRICTFP"};
duke@1 247
duke@1 248 /******************************************************************
duke@1 249 * Output routines
duke@1 250 ******************************************************************/
duke@1 251
duke@1 252 /** Write a character into given byte buffer;
duke@1 253 * byte buffer will not be grown.
duke@1 254 */
duke@1 255 void putChar(ByteBuffer buf, int op, int x) {
duke@1 256 buf.elems[op ] = (byte)((x >> 8) & 0xFF);
duke@1 257 buf.elems[op+1] = (byte)((x ) & 0xFF);
duke@1 258 }
duke@1 259
duke@1 260 /** Write an integer into given byte buffer;
duke@1 261 * byte buffer will not be grown.
duke@1 262 */
duke@1 263 void putInt(ByteBuffer buf, int adr, int x) {
duke@1 264 buf.elems[adr ] = (byte)((x >> 24) & 0xFF);
duke@1 265 buf.elems[adr+1] = (byte)((x >> 16) & 0xFF);
duke@1 266 buf.elems[adr+2] = (byte)((x >> 8) & 0xFF);
duke@1 267 buf.elems[adr+3] = (byte)((x ) & 0xFF);
duke@1 268 }
duke@1 269
rfield@1587 270 /**
rfield@1587 271 * Signature Generation
rfield@1587 272 */
rfield@1587 273 private class CWSignatureGenerator extends Types.SignatureGenerator {
duke@1 274
rfield@1587 275 /**
rfield@1587 276 * An output buffer for type signatures.
rfield@1587 277 */
rfield@1587 278 ByteBuffer sigbuf = new ByteBuffer();
rfield@1587 279
rfield@1587 280 CWSignatureGenerator(Types types) {
rfield@1587 281 super(types);
rfield@1587 282 }
rfield@1587 283
rfield@1587 284 /**
rfield@1587 285 * Assemble signature of given type in string buffer.
rfield@1587 286 * Check for uninitialized types before calling the general case.
rfield@1587 287 */
rfield@1587 288 @Override
rfield@1587 289 public void assembleSig(Type type) {
rfield@1587 290 type = type.unannotatedType();
rfield@1587 291 switch (type.getTag()) {
rfield@1587 292 case UNINITIALIZED_THIS:
rfield@1587 293 case UNINITIALIZED_OBJECT:
rfield@1587 294 // we don't yet have a spec for uninitialized types in the
rfield@1587 295 // local variable table
rfield@1587 296 assembleSig(types.erasure(((UninitializedType)type).qtype));
rfield@1587 297 break;
rfield@1587 298 default:
rfield@1587 299 super.assembleSig(type);
duke@1 300 }
duke@1 301 }
rfield@1587 302
rfield@1587 303 @Override
rfield@1587 304 protected void append(char ch) {
rfield@1587 305 sigbuf.appendByte(ch);
rfield@1587 306 }
rfield@1587 307
rfield@1587 308 @Override
rfield@1587 309 protected void append(byte[] ba) {
rfield@1587 310 sigbuf.appendBytes(ba);
rfield@1587 311 }
rfield@1587 312
rfield@1587 313 @Override
rfield@1587 314 protected void append(Name name) {
rfield@1587 315 sigbuf.appendName(name);
rfield@1587 316 }
rfield@1587 317
rfield@1587 318 @Override
rfield@1587 319 protected void classReference(ClassSymbol c) {
rfield@1587 320 enterInner(c);
rfield@1587 321 }
rfield@1587 322
rfield@1587 323 private void reset() {
rfield@1587 324 sigbuf.reset();
rfield@1587 325 }
rfield@1587 326
rfield@1587 327 private Name toName() {
rfield@1587 328 return sigbuf.toName(names);
rfield@1587 329 }
rfield@1587 330
rfield@1587 331 private boolean isEmpty() {
rfield@1587 332 return sigbuf.length == 0;
duke@1 333 }
duke@1 334 }
duke@1 335
rfield@1587 336 /**
rfield@1587 337 * Return signature of given type
duke@1 338 */
duke@1 339 Name typeSig(Type type) {
rfield@1587 340 Assert.check(signatureGen.isEmpty());
duke@1 341 //- System.out.println(" ? " + type);
rfield@1587 342 signatureGen.assembleSig(type);
rfield@1587 343 Name n = signatureGen.toName();
rfield@1587 344 signatureGen.reset();
duke@1 345 //- System.out.println(" " + n);
duke@1 346 return n;
duke@1 347 }
duke@1 348
duke@1 349 /** Given a type t, return the extended class name of its erasure in
duke@1 350 * external representation.
duke@1 351 */
duke@1 352 public Name xClassName(Type t) {
jjg@1374 353 if (t.hasTag(CLASS)) {
duke@1 354 return names.fromUtf(externalize(t.tsym.flatName()));
jjg@1374 355 } else if (t.hasTag(ARRAY)) {
duke@1 356 return typeSig(types.erasure(t));
duke@1 357 } else {
duke@1 358 throw new AssertionError("xClassName");
duke@1 359 }
duke@1 360 }
duke@1 361
duke@1 362 /******************************************************************
duke@1 363 * Writing the Constant Pool
duke@1 364 ******************************************************************/
duke@1 365
duke@1 366 /** Thrown when the constant pool is over full.
duke@1 367 */
duke@1 368 public static class PoolOverflow extends Exception {
duke@1 369 private static final long serialVersionUID = 0;
duke@1 370 public PoolOverflow() {}
duke@1 371 }
duke@1 372 public static class StringOverflow extends Exception {
duke@1 373 private static final long serialVersionUID = 0;
duke@1 374 public final String value;
duke@1 375 public StringOverflow(String s) {
duke@1 376 value = s;
duke@1 377 }
duke@1 378 }
duke@1 379
duke@1 380 /** Write constant pool to pool buffer.
duke@1 381 * Note: during writing, constant pool
duke@1 382 * might grow since some parts of constants still need to be entered.
duke@1 383 */
duke@1 384 void writePool(Pool pool) throws PoolOverflow, StringOverflow {
duke@1 385 int poolCountIdx = poolbuf.length;
duke@1 386 poolbuf.appendChar(0);
duke@1 387 int i = 1;
duke@1 388 while (i < pool.pp) {
duke@1 389 Object value = pool.pool[i];
jjg@816 390 Assert.checkNonNull(value);
vromero@1541 391 if (value instanceof Method || value instanceof Variable)
vromero@1541 392 value = ((DelegatedSymbol)value).getUnderlyingSymbol();
duke@1 393
duke@1 394 if (value instanceof MethodSymbol) {
duke@1 395 MethodSymbol m = (MethodSymbol)value;
mcimadamore@1336 396 if (!m.isDynamic()) {
mcimadamore@1336 397 poolbuf.appendByte((m.owner.flags() & INTERFACE) != 0
mcimadamore@1336 398 ? CONSTANT_InterfaceMethodref
mcimadamore@1336 399 : CONSTANT_Methodref);
mcimadamore@1336 400 poolbuf.appendChar(pool.put(m.owner));
mcimadamore@1336 401 poolbuf.appendChar(pool.put(nameType(m)));
mcimadamore@1336 402 } else {
mcimadamore@1336 403 //invokedynamic
mcimadamore@1336 404 DynamicMethodSymbol dynSym = (DynamicMethodSymbol)m;
vromero@1452 405 MethodHandle handle = new MethodHandle(dynSym.bsmKind, dynSym.bsm, types);
vromero@1452 406 DynamicMethod dynMeth = new DynamicMethod(dynSym, types);
vromero@1452 407 bootstrapMethods.put(dynMeth, handle);
mcimadamore@1336 408 //init cp entries
mcimadamore@1336 409 pool.put(names.BootstrapMethods);
mcimadamore@1336 410 pool.put(handle);
mcimadamore@1336 411 for (Object staticArg : dynSym.staticArgs) {
mcimadamore@1336 412 pool.put(staticArg);
mcimadamore@1336 413 }
mcimadamore@1336 414 poolbuf.appendByte(CONSTANT_InvokeDynamic);
mcimadamore@1336 415 poolbuf.appendChar(bootstrapMethods.size() - 1);
mcimadamore@1336 416 poolbuf.appendChar(pool.put(nameType(dynSym)));
mcimadamore@1336 417 }
duke@1 418 } else if (value instanceof VarSymbol) {
duke@1 419 VarSymbol v = (VarSymbol)value;
duke@1 420 poolbuf.appendByte(CONSTANT_Fieldref);
duke@1 421 poolbuf.appendChar(pool.put(v.owner));
duke@1 422 poolbuf.appendChar(pool.put(nameType(v)));
duke@1 423 } else if (value instanceof Name) {
duke@1 424 poolbuf.appendByte(CONSTANT_Utf8);
duke@1 425 byte[] bs = ((Name)value).toUtf();
duke@1 426 poolbuf.appendChar(bs.length);
duke@1 427 poolbuf.appendBytes(bs, 0, bs.length);
duke@1 428 if (bs.length > Pool.MAX_STRING_LENGTH)
duke@1 429 throw new StringOverflow(value.toString());
duke@1 430 } else if (value instanceof ClassSymbol) {
duke@1 431 ClassSymbol c = (ClassSymbol)value;
duke@1 432 if (c.owner.kind == TYP) pool.put(c.owner);
duke@1 433 poolbuf.appendByte(CONSTANT_Class);
jjg@1374 434 if (c.type.hasTag(ARRAY)) {
duke@1 435 poolbuf.appendChar(pool.put(typeSig(c.type)));
duke@1 436 } else {
duke@1 437 poolbuf.appendChar(pool.put(names.fromUtf(externalize(c.flatname))));
duke@1 438 enterInner(c);
duke@1 439 }
duke@1 440 } else if (value instanceof NameAndType) {
duke@1 441 NameAndType nt = (NameAndType)value;
duke@1 442 poolbuf.appendByte(CONSTANT_NameandType);
duke@1 443 poolbuf.appendChar(pool.put(nt.name));
vromero@1452 444 poolbuf.appendChar(pool.put(typeSig(nt.uniqueType.type)));
duke@1 445 } else if (value instanceof Integer) {
duke@1 446 poolbuf.appendByte(CONSTANT_Integer);
duke@1 447 poolbuf.appendInt(((Integer)value).intValue());
duke@1 448 } else if (value instanceof Long) {
duke@1 449 poolbuf.appendByte(CONSTANT_Long);
duke@1 450 poolbuf.appendLong(((Long)value).longValue());
duke@1 451 i++;
duke@1 452 } else if (value instanceof Float) {
duke@1 453 poolbuf.appendByte(CONSTANT_Float);
duke@1 454 poolbuf.appendFloat(((Float)value).floatValue());
duke@1 455 } else if (value instanceof Double) {
duke@1 456 poolbuf.appendByte(CONSTANT_Double);
duke@1 457 poolbuf.appendDouble(((Double)value).doubleValue());
duke@1 458 i++;
duke@1 459 } else if (value instanceof String) {
duke@1 460 poolbuf.appendByte(CONSTANT_String);
duke@1 461 poolbuf.appendChar(pool.put(names.fromString((String)value)));
vromero@1452 462 } else if (value instanceof UniqueType) {
vromero@1452 463 Type type = ((UniqueType)value).type;
vromero@1452 464 if (type instanceof MethodType) {
vromero@1452 465 poolbuf.appendByte(CONSTANT_MethodType);
vromero@1452 466 poolbuf.appendChar(pool.put(typeSig((MethodType)type)));
vromero@1452 467 } else {
vromero@1452 468 if (type.hasTag(CLASS)) enterInner((ClassSymbol)type.tsym);
vromero@1452 469 poolbuf.appendByte(CONSTANT_Class);
vromero@1452 470 poolbuf.appendChar(pool.put(xClassName(type)));
vromero@1452 471 }
vromero@1452 472 } else if (value instanceof MethodHandle) {
vromero@1452 473 MethodHandle ref = (MethodHandle)value;
mcimadamore@1336 474 poolbuf.appendByte(CONSTANT_MethodHandle);
mcimadamore@1336 475 poolbuf.appendByte(ref.refKind);
mcimadamore@1336 476 poolbuf.appendChar(pool.put(ref.refSym));
duke@1 477 } else {
jjg@816 478 Assert.error("writePool " + value);
duke@1 479 }
duke@1 480 i++;
duke@1 481 }
duke@1 482 if (pool.pp > Pool.MAX_ENTRIES)
duke@1 483 throw new PoolOverflow();
duke@1 484 putChar(poolbuf, poolCountIdx, pool.pp);
duke@1 485 }
duke@1 486
duke@1 487 /** Given a field, return its name.
duke@1 488 */
duke@1 489 Name fieldName(Symbol sym) {
duke@1 490 if (scramble && (sym.flags() & PRIVATE) != 0 ||
duke@1 491 scrambleAll && (sym.flags() & (PROTECTED | PUBLIC)) == 0)
jjg@113 492 return names.fromString("_$" + sym.name.getIndex());
duke@1 493 else
duke@1 494 return sym.name;
duke@1 495 }
duke@1 496
duke@1 497 /** Given a symbol, return its name-and-type.
duke@1 498 */
duke@1 499 NameAndType nameType(Symbol sym) {
duke@1 500 return new NameAndType(fieldName(sym),
duke@1 501 retrofit
duke@1 502 ? sym.erasure(types)
vromero@1452 503 : sym.externalType(types), types);
duke@1 504 // if we retrofit, then the NameAndType has been read in as is
duke@1 505 // and no change is necessary. If we compile normally, the
duke@1 506 // NameAndType is generated from a symbol reference, and the
duke@1 507 // adjustment of adding an additional this$n parameter needs to be made.
duke@1 508 }
duke@1 509
duke@1 510 /******************************************************************
duke@1 511 * Writing Attributes
duke@1 512 ******************************************************************/
duke@1 513
duke@1 514 /** Write header for an attribute to data buffer and return
duke@1 515 * position past attribute length index.
duke@1 516 */
duke@1 517 int writeAttr(Name attrName) {
duke@1 518 databuf.appendChar(pool.put(attrName));
duke@1 519 databuf.appendInt(0);
duke@1 520 return databuf.length;
duke@1 521 }
duke@1 522
duke@1 523 /** Fill in attribute length.
duke@1 524 */
duke@1 525 void endAttr(int index) {
duke@1 526 putInt(databuf, index - 4, databuf.length - index);
duke@1 527 }
duke@1 528
duke@1 529 /** Leave space for attribute count and return index for
duke@1 530 * number of attributes field.
duke@1 531 */
duke@1 532 int beginAttrs() {
duke@1 533 databuf.appendChar(0);
duke@1 534 return databuf.length;
duke@1 535 }
duke@1 536
duke@1 537 /** Fill in number of attributes.
duke@1 538 */
duke@1 539 void endAttrs(int index, int count) {
duke@1 540 putChar(databuf, index - 2, count);
duke@1 541 }
duke@1 542
duke@1 543 /** Write the EnclosingMethod attribute if needed.
duke@1 544 * Returns the number of attributes written (0 or 1).
duke@1 545 */
duke@1 546 int writeEnclosingMethodAttribute(ClassSymbol c) {
ksrini@1309 547 if (!target.hasEnclosingMethodAttribute())
ksrini@1309 548 return 0;
ksrini@1309 549 return writeEnclosingMethodAttribute(names.EnclosingMethod, c);
ksrini@1309 550 }
ksrini@1309 551
ksrini@1309 552 /** Write the EnclosingMethod attribute with a specified name.
ksrini@1309 553 * Returns the number of attributes written (0 or 1).
ksrini@1309 554 */
ksrini@1309 555 protected int writeEnclosingMethodAttribute(Name attributeName, ClassSymbol c) {
ksrini@1309 556 if (c.owner.kind != MTH && // neither a local class
duke@1 557 c.name != names.empty) // nor anonymous
duke@1 558 return 0;
duke@1 559
ksrini@1309 560 int alenIdx = writeAttr(attributeName);
duke@1 561 ClassSymbol enclClass = c.owner.enclClass();
duke@1 562 MethodSymbol enclMethod =
duke@1 563 (c.owner.type == null // local to init block
duke@1 564 || c.owner.kind != MTH) // or member init
duke@1 565 ? null
duke@1 566 : (MethodSymbol)c.owner;
duke@1 567 databuf.appendChar(pool.put(enclClass));
duke@1 568 databuf.appendChar(enclMethod == null ? 0 : pool.put(nameType(c.owner)));
duke@1 569 endAttr(alenIdx);
duke@1 570 return 1;
duke@1 571 }
duke@1 572
duke@1 573 /** Write flag attributes; return number of attributes written.
duke@1 574 */
duke@1 575 int writeFlagAttrs(long flags) {
duke@1 576 int acount = 0;
duke@1 577 if ((flags & DEPRECATED) != 0) {
duke@1 578 int alenIdx = writeAttr(names.Deprecated);
duke@1 579 endAttr(alenIdx);
duke@1 580 acount++;
duke@1 581 }
duke@1 582 if ((flags & ENUM) != 0 && !target.useEnumFlag()) {
duke@1 583 int alenIdx = writeAttr(names.Enum);
duke@1 584 endAttr(alenIdx);
duke@1 585 acount++;
duke@1 586 }
duke@1 587 if ((flags & SYNTHETIC) != 0 && !target.useSyntheticFlag()) {
duke@1 588 int alenIdx = writeAttr(names.Synthetic);
duke@1 589 endAttr(alenIdx);
duke@1 590 acount++;
duke@1 591 }
duke@1 592 if ((flags & BRIDGE) != 0 && !target.useBridgeFlag()) {
duke@1 593 int alenIdx = writeAttr(names.Bridge);
duke@1 594 endAttr(alenIdx);
duke@1 595 acount++;
duke@1 596 }
duke@1 597 if ((flags & VARARGS) != 0 && !target.useVarargsFlag()) {
duke@1 598 int alenIdx = writeAttr(names.Varargs);
duke@1 599 endAttr(alenIdx);
duke@1 600 acount++;
duke@1 601 }
duke@1 602 if ((flags & ANNOTATION) != 0 && !target.useAnnotationFlag()) {
duke@1 603 int alenIdx = writeAttr(names.Annotation);
duke@1 604 endAttr(alenIdx);
duke@1 605 acount++;
duke@1 606 }
duke@1 607 return acount;
duke@1 608 }
duke@1 609
duke@1 610 /** Write member (field or method) attributes;
duke@1 611 * return number of attributes written.
duke@1 612 */
duke@1 613 int writeMemberAttrs(Symbol sym) {
duke@1 614 int acount = writeFlagAttrs(sym.flags());
duke@1 615 long flags = sym.flags();
duke@1 616 if (source.allowGenerics() &&
duke@1 617 (flags & (SYNTHETIC|BRIDGE)) != SYNTHETIC &&
duke@1 618 (flags & ANONCONSTR) == 0 &&
duke@1 619 (!types.isSameType(sym.type, sym.erasure(types)) ||
rfield@1587 620 signatureGen.hasTypeVar(sym.type.getThrownTypes()))) {
duke@1 621 // note that a local class with captured variables
duke@1 622 // will get a signature attribute
duke@1 623 int alenIdx = writeAttr(names.Signature);
duke@1 624 databuf.appendChar(pool.put(typeSig(sym.type)));
duke@1 625 endAttr(alenIdx);
duke@1 626 acount++;
duke@1 627 }
jfranck@1464 628 acount += writeJavaAnnotations(sym.getRawAttributes());
jjg@1755 629 acount += writeTypeAnnotations(sym.getRawTypeAttributes(), false);
duke@1 630 return acount;
duke@1 631 }
duke@1 632
jjg@1473 633 /**
jjg@1473 634 * Write method parameter names attribute.
jjg@1473 635 */
jjg@1473 636 int writeMethodParametersAttr(MethodSymbol m) {
mcimadamore@1565 637 MethodType ty = m.externalType(types).asMethodType();
mcimadamore@1565 638 final int allparams = ty.argtypes.size();
mcimadamore@1565 639 if (m.params != null && allparams != 0) {
mcimadamore@1565 640 final int attrIndex = writeAttr(names.MethodParameters);
mcimadamore@1565 641 databuf.appendByte(allparams);
mcimadamore@1565 642 // Write extra parameters first
mcimadamore@1565 643 for (VarSymbol s : m.extraParams) {
mcimadamore@1565 644 final int flags =
mcimadamore@1565 645 ((int) s.flags() & (FINAL | SYNTHETIC | MANDATED)) |
mcimadamore@1565 646 ((int) m.flags() & SYNTHETIC);
mcimadamore@1565 647 databuf.appendChar(pool.put(s.name));
ksrini@1602 648 databuf.appendChar(flags);
mcimadamore@1565 649 }
mcimadamore@1565 650 // Now write the real parameters
jjg@1473 651 for (VarSymbol s : m.params) {
mcimadamore@1565 652 final int flags =
mcimadamore@1565 653 ((int) s.flags() & (FINAL | SYNTHETIC | MANDATED)) |
mcimadamore@1565 654 ((int) m.flags() & SYNTHETIC);
jjg@1473 655 databuf.appendChar(pool.put(s.name));
ksrini@1592 656 databuf.appendChar(flags);
jjg@1473 657 }
emc@1975 658 // Now write the captured locals
emc@1975 659 for (VarSymbol s : m.capturedLocals) {
emc@1975 660 final int flags =
emc@1975 661 ((int) s.flags() & (FINAL | SYNTHETIC | MANDATED)) |
emc@1975 662 ((int) m.flags() & SYNTHETIC);
emc@1975 663 databuf.appendChar(pool.put(s.name));
emc@1975 664 databuf.appendChar(flags);
emc@1975 665 }
jjg@1473 666 endAttr(attrIndex);
jjg@1473 667 return 1;
jjg@1473 668 } else
jjg@1473 669 return 0;
jjg@1473 670 }
jjg@1473 671
jjg@1473 672
duke@1 673 /** Write method parameter annotations;
duke@1 674 * return number of attributes written.
duke@1 675 */
duke@1 676 int writeParameterAttrs(MethodSymbol m) {
duke@1 677 boolean hasVisible = false;
duke@1 678 boolean hasInvisible = false;
vromero@1792 679 if (m.params != null) {
vromero@1792 680 for (VarSymbol s : m.params) {
vromero@1792 681 for (Attribute.Compound a : s.getRawAttributes()) {
vromero@1792 682 switch (types.getRetention(a)) {
vromero@1792 683 case SOURCE: break;
vromero@1792 684 case CLASS: hasInvisible = true; break;
vromero@1792 685 case RUNTIME: hasVisible = true; break;
vromero@1792 686 default: ;// /* fail soft */ throw new AssertionError(vis);
vromero@1792 687 }
duke@1 688 }
duke@1 689 }
duke@1 690 }
duke@1 691
duke@1 692 int attrCount = 0;
duke@1 693 if (hasVisible) {
duke@1 694 int attrIndex = writeAttr(names.RuntimeVisibleParameterAnnotations);
duke@1 695 databuf.appendByte(m.params.length());
duke@1 696 for (VarSymbol s : m.params) {
duke@1 697 ListBuffer<Attribute.Compound> buf = new ListBuffer<Attribute.Compound>();
jfranck@1464 698 for (Attribute.Compound a : s.getRawAttributes())
jjg@657 699 if (types.getRetention(a) == RetentionPolicy.RUNTIME)
duke@1 700 buf.append(a);
duke@1 701 databuf.appendChar(buf.length());
duke@1 702 for (Attribute.Compound a : buf)
duke@1 703 writeCompoundAttribute(a);
duke@1 704 }
duke@1 705 endAttr(attrIndex);
duke@1 706 attrCount++;
duke@1 707 }
duke@1 708 if (hasInvisible) {
duke@1 709 int attrIndex = writeAttr(names.RuntimeInvisibleParameterAnnotations);
duke@1 710 databuf.appendByte(m.params.length());
duke@1 711 for (VarSymbol s : m.params) {
duke@1 712 ListBuffer<Attribute.Compound> buf = new ListBuffer<Attribute.Compound>();
jfranck@1464 713 for (Attribute.Compound a : s.getRawAttributes())
jjg@657 714 if (types.getRetention(a) == RetentionPolicy.CLASS)
duke@1 715 buf.append(a);
duke@1 716 databuf.appendChar(buf.length());
duke@1 717 for (Attribute.Compound a : buf)
duke@1 718 writeCompoundAttribute(a);
duke@1 719 }
duke@1 720 endAttr(attrIndex);
duke@1 721 attrCount++;
duke@1 722 }
duke@1 723 return attrCount;
duke@1 724 }
duke@1 725
duke@1 726 /**********************************************************************
duke@1 727 * Writing Java-language annotations (aka metadata, attributes)
duke@1 728 **********************************************************************/
duke@1 729
duke@1 730 /** Write Java-language annotations; return number of JVM
duke@1 731 * attributes written (zero or one).
duke@1 732 */
duke@1 733 int writeJavaAnnotations(List<Attribute.Compound> attrs) {
duke@1 734 if (attrs.isEmpty()) return 0;
duke@1 735 ListBuffer<Attribute.Compound> visibles = new ListBuffer<Attribute.Compound>();
duke@1 736 ListBuffer<Attribute.Compound> invisibles = new ListBuffer<Attribute.Compound>();
duke@1 737 for (Attribute.Compound a : attrs) {
jjg@657 738 switch (types.getRetention(a)) {
duke@1 739 case SOURCE: break;
duke@1 740 case CLASS: invisibles.append(a); break;
duke@1 741 case RUNTIME: visibles.append(a); break;
duke@1 742 default: ;// /* fail soft */ throw new AssertionError(vis);
duke@1 743 }
duke@1 744 }
duke@1 745
duke@1 746 int attrCount = 0;
duke@1 747 if (visibles.length() != 0) {
duke@1 748 int attrIndex = writeAttr(names.RuntimeVisibleAnnotations);
duke@1 749 databuf.appendChar(visibles.length());
duke@1 750 for (Attribute.Compound a : visibles)
duke@1 751 writeCompoundAttribute(a);
duke@1 752 endAttr(attrIndex);
duke@1 753 attrCount++;
duke@1 754 }
duke@1 755 if (invisibles.length() != 0) {
duke@1 756 int attrIndex = writeAttr(names.RuntimeInvisibleAnnotations);
duke@1 757 databuf.appendChar(invisibles.length());
duke@1 758 for (Attribute.Compound a : invisibles)
duke@1 759 writeCompoundAttribute(a);
duke@1 760 endAttr(attrIndex);
duke@1 761 attrCount++;
duke@1 762 }
duke@1 763 return attrCount;
duke@1 764 }
duke@1 765
jjg@1755 766 int writeTypeAnnotations(List<Attribute.TypeCompound> typeAnnos, boolean inCode) {
jjg@1521 767 if (typeAnnos.isEmpty()) return 0;
jjg@1521 768
alundblad@2047 769 ListBuffer<Attribute.TypeCompound> visibles = new ListBuffer<>();
alundblad@2047 770 ListBuffer<Attribute.TypeCompound> invisibles = new ListBuffer<>();
jjg@1521 771
jjg@1521 772 for (Attribute.TypeCompound tc : typeAnnos) {
jjg@1755 773 if (tc.hasUnknownPosition()) {
jjg@1755 774 boolean fixed = tc.tryFixPosition();
jjg@1755 775
jjg@1755 776 // Could we fix it?
jjg@1755 777 if (!fixed) {
jjg@1521 778 // This happens for nested types like @A Outer. @B Inner.
jjg@1521 779 // For method parameters we get the annotation twice! Once with
jjg@1521 780 // a valid position, once unknown.
jjg@1521 781 // TODO: find a cleaner solution.
jjg@1755 782 PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
jjg@1755 783 pw.println("ClassWriter: Position UNKNOWN in type annotation: " + tc);
jjg@1521 784 continue;
jjg@1521 785 }
jjg@1521 786 }
jjg@1755 787
jjg@1755 788 if (tc.position.type.isLocal() != inCode)
jjg@1755 789 continue;
jjg@1521 790 if (!tc.position.emitToClassfile())
jjg@1521 791 continue;
jjg@1521 792 switch (types.getRetention(tc)) {
jjg@1521 793 case SOURCE: break;
jjg@1521 794 case CLASS: invisibles.append(tc); break;
jjg@1521 795 case RUNTIME: visibles.append(tc); break;
jjg@1521 796 default: ;// /* fail soft */ throw new AssertionError(vis);
jjg@1521 797 }
jjg@1521 798 }
jjg@1521 799
jjg@1521 800 int attrCount = 0;
jjg@1521 801 if (visibles.length() != 0) {
jjg@1521 802 int attrIndex = writeAttr(names.RuntimeVisibleTypeAnnotations);
jjg@1521 803 databuf.appendChar(visibles.length());
jjg@1521 804 for (Attribute.TypeCompound p : visibles)
jjg@1521 805 writeTypeAnnotation(p);
jjg@1521 806 endAttr(attrIndex);
jjg@1521 807 attrCount++;
jjg@1521 808 }
jjg@1521 809
jjg@1521 810 if (invisibles.length() != 0) {
jjg@1521 811 int attrIndex = writeAttr(names.RuntimeInvisibleTypeAnnotations);
jjg@1521 812 databuf.appendChar(invisibles.length());
jjg@1521 813 for (Attribute.TypeCompound p : invisibles)
jjg@1521 814 writeTypeAnnotation(p);
jjg@1521 815 endAttr(attrIndex);
jjg@1521 816 attrCount++;
jjg@1521 817 }
jjg@1521 818
jjg@1521 819 return attrCount;
jjg@1521 820 }
jjg@1521 821
duke@1 822 /** A visitor to write an attribute including its leading
duke@1 823 * single-character marker.
duke@1 824 */
duke@1 825 class AttributeWriter implements Attribute.Visitor {
duke@1 826 public void visitConstant(Attribute.Constant _value) {
duke@1 827 Object value = _value.value;
jjg@1374 828 switch (_value.type.getTag()) {
duke@1 829 case BYTE:
duke@1 830 databuf.appendByte('B');
duke@1 831 break;
duke@1 832 case CHAR:
duke@1 833 databuf.appendByte('C');
duke@1 834 break;
duke@1 835 case SHORT:
duke@1 836 databuf.appendByte('S');
duke@1 837 break;
duke@1 838 case INT:
duke@1 839 databuf.appendByte('I');
duke@1 840 break;
duke@1 841 case LONG:
duke@1 842 databuf.appendByte('J');
duke@1 843 break;
duke@1 844 case FLOAT:
duke@1 845 databuf.appendByte('F');
duke@1 846 break;
duke@1 847 case DOUBLE:
duke@1 848 databuf.appendByte('D');
duke@1 849 break;
duke@1 850 case BOOLEAN:
duke@1 851 databuf.appendByte('Z');
duke@1 852 break;
duke@1 853 case CLASS:
jjg@816 854 Assert.check(value instanceof String);
duke@1 855 databuf.appendByte('s');
duke@1 856 value = names.fromString(value.toString()); // CONSTANT_Utf8
duke@1 857 break;
duke@1 858 default:
duke@1 859 throw new AssertionError(_value.type);
duke@1 860 }
duke@1 861 databuf.appendChar(pool.put(value));
duke@1 862 }
duke@1 863 public void visitEnum(Attribute.Enum e) {
duke@1 864 databuf.appendByte('e');
duke@1 865 databuf.appendChar(pool.put(typeSig(e.value.type)));
duke@1 866 databuf.appendChar(pool.put(e.value.name));
duke@1 867 }
duke@1 868 public void visitClass(Attribute.Class clazz) {
duke@1 869 databuf.appendByte('c');
jfranck@1313 870 databuf.appendChar(pool.put(typeSig(clazz.classType)));
duke@1 871 }
duke@1 872 public void visitCompound(Attribute.Compound compound) {
duke@1 873 databuf.appendByte('@');
duke@1 874 writeCompoundAttribute(compound);
duke@1 875 }
duke@1 876 public void visitError(Attribute.Error x) {
duke@1 877 throw new AssertionError(x);
duke@1 878 }
duke@1 879 public void visitArray(Attribute.Array array) {
duke@1 880 databuf.appendByte('[');
duke@1 881 databuf.appendChar(array.values.length);
duke@1 882 for (Attribute a : array.values) {
duke@1 883 a.accept(this);
duke@1 884 }
duke@1 885 }
duke@1 886 }
duke@1 887 AttributeWriter awriter = new AttributeWriter();
duke@1 888
duke@1 889 /** Write a compound attribute excluding the '@' marker. */
duke@1 890 void writeCompoundAttribute(Attribute.Compound c) {
duke@1 891 databuf.appendChar(pool.put(typeSig(c.type)));
duke@1 892 databuf.appendChar(c.values.length());
duke@1 893 for (Pair<Symbol.MethodSymbol,Attribute> p : c.values) {
duke@1 894 databuf.appendChar(pool.put(p.fst.name));
duke@1 895 p.snd.accept(awriter);
duke@1 896 }
duke@1 897 }
jjg@1521 898
jjg@1521 899 void writeTypeAnnotation(Attribute.TypeCompound c) {
jjg@1521 900 writePosition(c.position);
jjg@1521 901 writeCompoundAttribute(c);
jjg@1521 902 }
jjg@1521 903
jjg@1521 904 void writePosition(TypeAnnotationPosition p) {
jjg@1521 905 databuf.appendByte(p.type.targetTypeValue()); // TargetType tag is a byte
jjg@1521 906 switch (p.type) {
jjg@1521 907 // instanceof
jjg@1521 908 case INSTANCEOF:
jjg@1521 909 // new expression
jjg@1521 910 case NEW:
jjg@1563 911 // constructor/method reference receiver
jjg@1563 912 case CONSTRUCTOR_REFERENCE:
jjg@1563 913 case METHOD_REFERENCE:
jjg@1521 914 databuf.appendChar(p.offset);
jjg@1521 915 break;
jjg@1521 916 // local variable
jjg@1521 917 case LOCAL_VARIABLE:
jjg@1521 918 // resource variable
jjg@1521 919 case RESOURCE_VARIABLE:
jjg@1521 920 databuf.appendChar(p.lvarOffset.length); // for table length
jjg@1521 921 for (int i = 0; i < p.lvarOffset.length; ++i) {
jjg@1521 922 databuf.appendChar(p.lvarOffset[i]);
jjg@1521 923 databuf.appendChar(p.lvarLength[i]);
jjg@1521 924 databuf.appendChar(p.lvarIndex[i]);
jjg@1521 925 }
jjg@1521 926 break;
jjg@1521 927 // exception parameter
jjg@1521 928 case EXCEPTION_PARAMETER:
jjg@1755 929 databuf.appendChar(p.exception_index);
jjg@1521 930 break;
jjg@1521 931 // method receiver
jjg@1521 932 case METHOD_RECEIVER:
jjg@1521 933 // Do nothing
jjg@1521 934 break;
jjg@1521 935 // type parameter
jjg@1521 936 case CLASS_TYPE_PARAMETER:
jjg@1521 937 case METHOD_TYPE_PARAMETER:
jjg@1521 938 databuf.appendByte(p.parameter_index);
jjg@1521 939 break;
jjg@1521 940 // type parameter bound
jjg@1521 941 case CLASS_TYPE_PARAMETER_BOUND:
jjg@1521 942 case METHOD_TYPE_PARAMETER_BOUND:
jjg@1521 943 databuf.appendByte(p.parameter_index);
jjg@1521 944 databuf.appendByte(p.bound_index);
jjg@1521 945 break;
jjg@1521 946 // class extends or implements clause
jjg@1521 947 case CLASS_EXTENDS:
jjg@1521 948 databuf.appendChar(p.type_index);
jjg@1521 949 break;
jjg@1521 950 // throws
jjg@1521 951 case THROWS:
jjg@1521 952 databuf.appendChar(p.type_index);
jjg@1521 953 break;
jjg@1521 954 // method parameter
jjg@1521 955 case METHOD_FORMAL_PARAMETER:
jjg@1521 956 databuf.appendByte(p.parameter_index);
jjg@1521 957 break;
jjg@1563 958 // type cast
jjg@1563 959 case CAST:
jjg@1521 960 // method/constructor/reference type argument
jjg@1521 961 case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT:
jjg@1521 962 case METHOD_INVOCATION_TYPE_ARGUMENT:
jjg@1563 963 case CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT:
jjg@1521 964 case METHOD_REFERENCE_TYPE_ARGUMENT:
jjg@1521 965 databuf.appendChar(p.offset);
jjg@1521 966 databuf.appendByte(p.type_index);
jjg@1521 967 break;
jjg@1521 968 // We don't need to worry about these
jjg@1521 969 case METHOD_RETURN:
jjg@1521 970 case FIELD:
jjg@1521 971 break;
jjg@1521 972 case UNKNOWN:
jjg@1521 973 throw new AssertionError("jvm.ClassWriter: UNKNOWN target type should never occur!");
jjg@1521 974 default:
jjg@1521 975 throw new AssertionError("jvm.ClassWriter: Unknown target type for position: " + p);
jjg@1521 976 }
jjg@1521 977
jjg@1521 978 { // Append location data for generics/arrays.
jjg@1521 979 databuf.appendByte(p.location.size());
jjg@1521 980 java.util.List<Integer> loc = TypeAnnotationPosition.getBinaryFromTypePath(p.location);
jjg@1521 981 for (int i : loc)
jjg@1521 982 databuf.appendByte((byte)i);
jjg@1521 983 }
jjg@1521 984 }
jjg@1521 985
duke@1 986 /**********************************************************************
duke@1 987 * Writing Objects
duke@1 988 **********************************************************************/
duke@1 989
duke@1 990 /** Enter an inner class into the `innerClasses' set/queue.
duke@1 991 */
duke@1 992 void enterInner(ClassSymbol c) {
mcimadamore@747 993 if (c.type.isCompound()) {
mcimadamore@747 994 throw new AssertionError("Unexpected intersection type: " + c.type);
mcimadamore@747 995 }
duke@1 996 try {
duke@1 997 c.complete();
duke@1 998 } catch (CompletionFailure ex) {
duke@1 999 System.err.println("error: " + c + ": " + ex.getMessage());
duke@1 1000 throw ex;
duke@1 1001 }
jjg@1374 1002 if (!c.type.hasTag(CLASS)) return; // arrays
duke@1 1003 if (pool != null && // pool might be null if called from xClassName
mcimadamore@1086 1004 c.owner.enclClass() != null &&
duke@1 1005 (innerClasses == null || !innerClasses.contains(c))) {
duke@1 1006 // log.errWriter.println("enter inner " + c);//DEBUG
mcimadamore@1086 1007 enterInner(c.owner.enclClass());
duke@1 1008 pool.put(c);
vromero@1698 1009 if (c.name != names.empty)
vromero@1698 1010 pool.put(c.name);
duke@1 1011 if (innerClasses == null) {
duke@1 1012 innerClasses = new HashSet<ClassSymbol>();
duke@1 1013 innerClassesQueue = new ListBuffer<ClassSymbol>();
duke@1 1014 pool.put(names.InnerClasses);
duke@1 1015 }
duke@1 1016 innerClasses.add(c);
duke@1 1017 innerClassesQueue.append(c);
duke@1 1018 }
duke@1 1019 }
duke@1 1020
duke@1 1021 /** Write "inner classes" attribute.
duke@1 1022 */
duke@1 1023 void writeInnerClasses() {
duke@1 1024 int alenIdx = writeAttr(names.InnerClasses);
duke@1 1025 databuf.appendChar(innerClassesQueue.length());
duke@1 1026 for (List<ClassSymbol> l = innerClassesQueue.toList();
duke@1 1027 l.nonEmpty();
duke@1 1028 l = l.tail) {
duke@1 1029 ClassSymbol inner = l.head;
duke@1 1030 char flags = (char) adjustFlags(inner.flags_field);
duke@1 1031 if ((flags & INTERFACE) != 0) flags |= ABSTRACT; // Interfaces are always ABSTRACT
duke@1 1032 if (inner.name.isEmpty()) flags &= ~FINAL; // Anonymous class: unset FINAL flag
vromero@1801 1033 flags &= ~STRICTFP; //inner classes should not have the strictfp flag set.
duke@1 1034 if (dumpInnerClassModifiers) {
jjg@1135 1035 PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
jjg@1135 1036 pw.println("INNERCLASS " + inner.name);
jjg@1135 1037 pw.println("---" + flagNames(flags));
duke@1 1038 }
duke@1 1039 databuf.appendChar(pool.get(inner));
duke@1 1040 databuf.appendChar(
jlahoda@2304 1041 inner.owner.kind == TYP && !inner.name.isEmpty() ? pool.get(inner.owner) : 0);
duke@1 1042 databuf.appendChar(
jjg@113 1043 !inner.name.isEmpty() ? pool.get(inner.name) : 0);
duke@1 1044 databuf.appendChar(flags);
duke@1 1045 }
duke@1 1046 endAttr(alenIdx);
duke@1 1047 }
duke@1 1048
mcimadamore@1336 1049 /** Write "bootstrapMethods" attribute.
mcimadamore@1336 1050 */
mcimadamore@1336 1051 void writeBootstrapMethods() {
mcimadamore@1336 1052 int alenIdx = writeAttr(names.BootstrapMethods);
mcimadamore@1336 1053 databuf.appendChar(bootstrapMethods.size());
vromero@1452 1054 for (Map.Entry<DynamicMethod, MethodHandle> entry : bootstrapMethods.entrySet()) {
vromero@1452 1055 DynamicMethod dmeth = entry.getKey();
vromero@1452 1056 DynamicMethodSymbol dsym = (DynamicMethodSymbol)dmeth.baseSymbol();
mcimadamore@1336 1057 //write BSM handle
mcimadamore@1336 1058 databuf.appendChar(pool.get(entry.getValue()));
mcimadamore@1336 1059 //write static args length
mcimadamore@1336 1060 databuf.appendChar(dsym.staticArgs.length);
mcimadamore@1336 1061 //write static args array
vromero@1452 1062 Object[] uniqueArgs = dmeth.uniqueStaticArgs;
vromero@1452 1063 for (Object o : uniqueArgs) {
mcimadamore@1336 1064 databuf.appendChar(pool.get(o));
mcimadamore@1336 1065 }
mcimadamore@1336 1066 }
mcimadamore@1336 1067 endAttr(alenIdx);
mcimadamore@1336 1068 }
mcimadamore@1336 1069
duke@1 1070 /** Write field symbol, entering all references into constant pool.
duke@1 1071 */
duke@1 1072 void writeField(VarSymbol v) {
duke@1 1073 int flags = adjustFlags(v.flags());
duke@1 1074 databuf.appendChar(flags);
duke@1 1075 if (dumpFieldModifiers) {
jjg@1135 1076 PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
jjg@1135 1077 pw.println("FIELD " + fieldName(v));
jjg@1135 1078 pw.println("---" + flagNames(v.flags()));
duke@1 1079 }
duke@1 1080 databuf.appendChar(pool.put(fieldName(v)));
duke@1 1081 databuf.appendChar(pool.put(typeSig(v.erasure(types))));
duke@1 1082 int acountIdx = beginAttrs();
duke@1 1083 int acount = 0;
duke@1 1084 if (v.getConstValue() != null) {
duke@1 1085 int alenIdx = writeAttr(names.ConstantValue);
duke@1 1086 databuf.appendChar(pool.put(v.getConstValue()));
duke@1 1087 endAttr(alenIdx);
duke@1 1088 acount++;
duke@1 1089 }
duke@1 1090 acount += writeMemberAttrs(v);
duke@1 1091 endAttrs(acountIdx, acount);
duke@1 1092 }
duke@1 1093
duke@1 1094 /** Write method symbol, entering all references into constant pool.
duke@1 1095 */
duke@1 1096 void writeMethod(MethodSymbol m) {
duke@1 1097 int flags = adjustFlags(m.flags());
duke@1 1098 databuf.appendChar(flags);
duke@1 1099 if (dumpMethodModifiers) {
jjg@1135 1100 PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
jjg@1135 1101 pw.println("METHOD " + fieldName(m));
jjg@1135 1102 pw.println("---" + flagNames(m.flags()));
duke@1 1103 }
duke@1 1104 databuf.appendChar(pool.put(fieldName(m)));
duke@1 1105 databuf.appendChar(pool.put(typeSig(m.externalType(types))));
duke@1 1106 int acountIdx = beginAttrs();
duke@1 1107 int acount = 0;
duke@1 1108 if (m.code != null) {
duke@1 1109 int alenIdx = writeAttr(names.Code);
duke@1 1110 writeCode(m.code);
duke@1 1111 m.code = null; // to conserve space
duke@1 1112 endAttr(alenIdx);
duke@1 1113 acount++;
duke@1 1114 }
duke@1 1115 List<Type> thrown = m.erasure(types).getThrownTypes();
duke@1 1116 if (thrown.nonEmpty()) {
duke@1 1117 int alenIdx = writeAttr(names.Exceptions);
duke@1 1118 databuf.appendChar(thrown.length());
duke@1 1119 for (List<Type> l = thrown; l.nonEmpty(); l = l.tail)
duke@1 1120 databuf.appendChar(pool.put(l.head.tsym));
duke@1 1121 endAttr(alenIdx);
duke@1 1122 acount++;
duke@1 1123 }
duke@1 1124 if (m.defaultValue != null) {
duke@1 1125 int alenIdx = writeAttr(names.AnnotationDefault);
duke@1 1126 m.defaultValue.accept(awriter);
duke@1 1127 endAttr(alenIdx);
duke@1 1128 acount++;
duke@1 1129 }
jjg@1473 1130 if (options.isSet(PARAMETERS))
jjg@1473 1131 acount += writeMethodParametersAttr(m);
duke@1 1132 acount += writeMemberAttrs(m);
duke@1 1133 acount += writeParameterAttrs(m);
duke@1 1134 endAttrs(acountIdx, acount);
duke@1 1135 }
duke@1 1136
duke@1 1137 /** Write code attribute of method.
duke@1 1138 */
duke@1 1139 void writeCode(Code code) {
duke@1 1140 databuf.appendChar(code.max_stack);
duke@1 1141 databuf.appendChar(code.max_locals);
duke@1 1142 databuf.appendInt(code.cp);
duke@1 1143 databuf.appendBytes(code.code, 0, code.cp);
duke@1 1144 databuf.appendChar(code.catchInfo.length());
duke@1 1145 for (List<char[]> l = code.catchInfo.toList();
duke@1 1146 l.nonEmpty();
duke@1 1147 l = l.tail) {
duke@1 1148 for (int i = 0; i < l.head.length; i++)
duke@1 1149 databuf.appendChar(l.head[i]);
duke@1 1150 }
duke@1 1151 int acountIdx = beginAttrs();
duke@1 1152 int acount = 0;
duke@1 1153
duke@1 1154 if (code.lineInfo.nonEmpty()) {
duke@1 1155 int alenIdx = writeAttr(names.LineNumberTable);
duke@1 1156 databuf.appendChar(code.lineInfo.length());
duke@1 1157 for (List<char[]> l = code.lineInfo.reverse();
duke@1 1158 l.nonEmpty();
duke@1 1159 l = l.tail)
duke@1 1160 for (int i = 0; i < l.head.length; i++)
duke@1 1161 databuf.appendChar(l.head[i]);
duke@1 1162 endAttr(alenIdx);
duke@1 1163 acount++;
duke@1 1164 }
duke@1 1165
duke@1 1166 if (genCrt && (code.crt != null)) {
duke@1 1167 CRTable crt = code.crt;
duke@1 1168 int alenIdx = writeAttr(names.CharacterRangeTable);
duke@1 1169 int crtIdx = beginAttrs();
duke@1 1170 int crtEntries = crt.writeCRT(databuf, code.lineMap, log);
duke@1 1171 endAttrs(crtIdx, crtEntries);
duke@1 1172 endAttr(alenIdx);
duke@1 1173 acount++;
duke@1 1174 }
duke@1 1175
duke@1 1176 // counter for number of generic local variables
vromero@2199 1177 if (code.varDebugInfo && code.varBufferSize > 0) {
vromero@2199 1178 int nGenericVars = 0;
duke@1 1179 int alenIdx = writeAttr(names.LocalVariableTable);
vromero@2027 1180 databuf.appendChar(code.getLVTSize());
duke@1 1181 for (int i=0; i<code.varBufferSize; i++) {
duke@1 1182 Code.LocalVar var = code.varBuffer[i];
duke@1 1183
vromero@2027 1184 for (Code.LocalVar.Range r: var.aliveRanges) {
vromero@2027 1185 // write variable info
vromero@2027 1186 Assert.check(r.start_pc >= 0
vromero@2027 1187 && r.start_pc <= code.cp);
vromero@2027 1188 databuf.appendChar(r.start_pc);
vromero@2027 1189 Assert.check(r.length >= 0
vromero@2027 1190 && (r.start_pc + r.length) <= code.cp);
vromero@2027 1191 databuf.appendChar(r.length);
vromero@2027 1192 VarSymbol sym = var.sym;
vromero@2027 1193 databuf.appendChar(pool.put(sym.name));
vromero@2027 1194 Type vartype = sym.erasure(types);
vromero@2027 1195 databuf.appendChar(pool.put(typeSig(vartype)));
vromero@2027 1196 databuf.appendChar(var.reg);
vromero@2199 1197 if (needsLocalVariableTypeEntry(var.sym.type)) {
vromero@2027 1198 nGenericVars++;
vromero@2199 1199 }
vromero@2027 1200 }
duke@1 1201 }
duke@1 1202 endAttr(alenIdx);
duke@1 1203 acount++;
duke@1 1204
vromero@2199 1205 if (nGenericVars > 0) {
vromero@2199 1206 alenIdx = writeAttr(names.LocalVariableTypeTable);
vromero@2199 1207 databuf.appendChar(nGenericVars);
vromero@2199 1208 int count = 0;
duke@1 1209
vromero@2199 1210 for (int i=0; i<code.varBufferSize; i++) {
vromero@2199 1211 Code.LocalVar var = code.varBuffer[i];
vromero@2199 1212 VarSymbol sym = var.sym;
vromero@2199 1213 if (!needsLocalVariableTypeEntry(sym.type))
vromero@2199 1214 continue;
vromero@2199 1215 for (Code.LocalVar.Range r : var.aliveRanges) {
vromero@2199 1216 // write variable info
vromero@2199 1217 databuf.appendChar(r.start_pc);
vromero@2199 1218 databuf.appendChar(r.length);
vromero@2199 1219 databuf.appendChar(pool.put(sym.name));
vromero@2199 1220 databuf.appendChar(pool.put(typeSig(sym.type)));
vromero@2199 1221 databuf.appendChar(var.reg);
vromero@2199 1222 count++;
vromero@2199 1223 }
vromero@2027 1224 }
vromero@2199 1225 Assert.check(count == nGenericVars);
vromero@2199 1226 endAttr(alenIdx);
vromero@2199 1227 acount++;
duke@1 1228 }
duke@1 1229 }
duke@1 1230
duke@1 1231 if (code.stackMapBufferSize > 0) {
duke@1 1232 if (debugstackmap) System.out.println("Stack map for " + code.meth);
duke@1 1233 int alenIdx = writeAttr(code.stackMap.getAttributeName(names));
duke@1 1234 writeStackMap(code);
duke@1 1235 endAttr(alenIdx);
duke@1 1236 acount++;
duke@1 1237 }
jjg@1755 1238
jjg@1755 1239 acount += writeTypeAnnotations(code.meth.getRawTypeAttributes(), true);
jjg@1755 1240
duke@1 1241 endAttrs(acountIdx, acount);
duke@1 1242 }
mcimadamore@781 1243 //where
mcimadamore@781 1244 private boolean needsLocalVariableTypeEntry(Type t) {
mcimadamore@781 1245 //a local variable needs a type-entry if its type T is generic
mcimadamore@781 1246 //(i.e. |T| != T) and if it's not an intersection type (not supported
mcimadamore@781 1247 //in signature attribute grammar)
mcimadamore@781 1248 return (!types.isSameType(t, types.erasure(t)) &&
mcimadamore@781 1249 !t.isCompound());
mcimadamore@781 1250 }
duke@1 1251
duke@1 1252 void writeStackMap(Code code) {
duke@1 1253 int nframes = code.stackMapBufferSize;
duke@1 1254 if (debugstackmap) System.out.println(" nframes = " + nframes);
duke@1 1255 databuf.appendChar(nframes);
duke@1 1256
duke@1 1257 switch (code.stackMap) {
duke@1 1258 case CLDC:
duke@1 1259 for (int i=0; i<nframes; i++) {
duke@1 1260 if (debugstackmap) System.out.print(" " + i + ":");
duke@1 1261 Code.StackMapFrame frame = code.stackMapBuffer[i];
duke@1 1262
duke@1 1263 // output PC
duke@1 1264 if (debugstackmap) System.out.print(" pc=" + frame.pc);
duke@1 1265 databuf.appendChar(frame.pc);
duke@1 1266
duke@1 1267 // output locals
duke@1 1268 int localCount = 0;
duke@1 1269 for (int j=0; j<frame.locals.length;
duke@1 1270 j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.locals[j]))) {
duke@1 1271 localCount++;
duke@1 1272 }
duke@1 1273 if (debugstackmap) System.out.print(" nlocals=" +
duke@1 1274 localCount);
duke@1 1275 databuf.appendChar(localCount);
duke@1 1276 for (int j=0; j<frame.locals.length;
duke@1 1277 j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.locals[j]))) {
duke@1 1278 if (debugstackmap) System.out.print(" local[" + j + "]=");
duke@1 1279 writeStackMapType(frame.locals[j]);
duke@1 1280 }
duke@1 1281
duke@1 1282 // output stack
duke@1 1283 int stackCount = 0;
duke@1 1284 for (int j=0; j<frame.stack.length;
duke@1 1285 j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.stack[j]))) {
duke@1 1286 stackCount++;
duke@1 1287 }
duke@1 1288 if (debugstackmap) System.out.print(" nstack=" +
duke@1 1289 stackCount);
duke@1 1290 databuf.appendChar(stackCount);
duke@1 1291 for (int j=0; j<frame.stack.length;
duke@1 1292 j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.stack[j]))) {
duke@1 1293 if (debugstackmap) System.out.print(" stack[" + j + "]=");
duke@1 1294 writeStackMapType(frame.stack[j]);
duke@1 1295 }
duke@1 1296 if (debugstackmap) System.out.println();
duke@1 1297 }
duke@1 1298 break;
duke@1 1299 case JSR202: {
jjg@816 1300 Assert.checkNull(code.stackMapBuffer);
duke@1 1301 for (int i=0; i<nframes; i++) {
duke@1 1302 if (debugstackmap) System.out.print(" " + i + ":");
duke@1 1303 StackMapTableFrame frame = code.stackMapTableBuffer[i];
duke@1 1304 frame.write(this);
duke@1 1305 if (debugstackmap) System.out.println();
duke@1 1306 }
duke@1 1307 break;
duke@1 1308 }
duke@1 1309 default:
duke@1 1310 throw new AssertionError("Unexpected stackmap format value");
duke@1 1311 }
duke@1 1312 }
duke@1 1313
duke@1 1314 //where
duke@1 1315 void writeStackMapType(Type t) {
duke@1 1316 if (t == null) {
duke@1 1317 if (debugstackmap) System.out.print("empty");
duke@1 1318 databuf.appendByte(0);
duke@1 1319 }
jjg@1374 1320 else switch(t.getTag()) {
duke@1 1321 case BYTE:
duke@1 1322 case CHAR:
duke@1 1323 case SHORT:
duke@1 1324 case INT:
duke@1 1325 case BOOLEAN:
duke@1 1326 if (debugstackmap) System.out.print("int");
duke@1 1327 databuf.appendByte(1);
duke@1 1328 break;
duke@1 1329 case FLOAT:
duke@1 1330 if (debugstackmap) System.out.print("float");
duke@1 1331 databuf.appendByte(2);
duke@1 1332 break;
duke@1 1333 case DOUBLE:
duke@1 1334 if (debugstackmap) System.out.print("double");
duke@1 1335 databuf.appendByte(3);
duke@1 1336 break;
duke@1 1337 case LONG:
duke@1 1338 if (debugstackmap) System.out.print("long");
duke@1 1339 databuf.appendByte(4);
duke@1 1340 break;
duke@1 1341 case BOT: // null
duke@1 1342 if (debugstackmap) System.out.print("null");
duke@1 1343 databuf.appendByte(5);
duke@1 1344 break;
duke@1 1345 case CLASS:
duke@1 1346 case ARRAY:
duke@1 1347 if (debugstackmap) System.out.print("object(" + t + ")");
duke@1 1348 databuf.appendByte(7);
duke@1 1349 databuf.appendChar(pool.put(t));
duke@1 1350 break;
duke@1 1351 case TYPEVAR:
duke@1 1352 if (debugstackmap) System.out.print("object(" + types.erasure(t).tsym + ")");
duke@1 1353 databuf.appendByte(7);
duke@1 1354 databuf.appendChar(pool.put(types.erasure(t).tsym));
duke@1 1355 break;
duke@1 1356 case UNINITIALIZED_THIS:
duke@1 1357 if (debugstackmap) System.out.print("uninit_this");
duke@1 1358 databuf.appendByte(6);
duke@1 1359 break;
duke@1 1360 case UNINITIALIZED_OBJECT:
duke@1 1361 { UninitializedType uninitType = (UninitializedType)t;
duke@1 1362 databuf.appendByte(8);
duke@1 1363 if (debugstackmap) System.out.print("uninit_object@" + uninitType.offset);
duke@1 1364 databuf.appendChar(uninitType.offset);
duke@1 1365 }
duke@1 1366 break;
duke@1 1367 default:
duke@1 1368 throw new AssertionError();
duke@1 1369 }
duke@1 1370 }
duke@1 1371
duke@1 1372 /** An entry in the JSR202 StackMapTable */
duke@1 1373 abstract static class StackMapTableFrame {
duke@1 1374 abstract int getFrameType();
duke@1 1375
duke@1 1376 void write(ClassWriter writer) {
duke@1 1377 int frameType = getFrameType();
duke@1 1378 writer.databuf.appendByte(frameType);
duke@1 1379 if (writer.debugstackmap) System.out.print(" frame_type=" + frameType);
duke@1 1380 }
duke@1 1381
duke@1 1382 static class SameFrame extends StackMapTableFrame {
duke@1 1383 final int offsetDelta;
duke@1 1384 SameFrame(int offsetDelta) {
duke@1 1385 this.offsetDelta = offsetDelta;
duke@1 1386 }
duke@1 1387 int getFrameType() {
duke@1 1388 return (offsetDelta < SAME_FRAME_SIZE) ? offsetDelta : SAME_FRAME_EXTENDED;
duke@1 1389 }
duke@1 1390 @Override
duke@1 1391 void write(ClassWriter writer) {
duke@1 1392 super.write(writer);
duke@1 1393 if (getFrameType() == SAME_FRAME_EXTENDED) {
duke@1 1394 writer.databuf.appendChar(offsetDelta);
duke@1 1395 if (writer.debugstackmap){
duke@1 1396 System.out.print(" offset_delta=" + offsetDelta);
duke@1 1397 }
duke@1 1398 }
duke@1 1399 }
duke@1 1400 }
duke@1 1401
duke@1 1402 static class SameLocals1StackItemFrame extends StackMapTableFrame {
duke@1 1403 final int offsetDelta;
duke@1 1404 final Type stack;
duke@1 1405 SameLocals1StackItemFrame(int offsetDelta, Type stack) {
duke@1 1406 this.offsetDelta = offsetDelta;
duke@1 1407 this.stack = stack;
duke@1 1408 }
duke@1 1409 int getFrameType() {
duke@1 1410 return (offsetDelta < SAME_FRAME_SIZE) ?
duke@1 1411 (SAME_FRAME_SIZE + offsetDelta) :
duke@1 1412 SAME_LOCALS_1_STACK_ITEM_EXTENDED;
duke@1 1413 }
duke@1 1414 @Override
duke@1 1415 void write(ClassWriter writer) {
duke@1 1416 super.write(writer);
duke@1 1417 if (getFrameType() == SAME_LOCALS_1_STACK_ITEM_EXTENDED) {
duke@1 1418 writer.databuf.appendChar(offsetDelta);
duke@1 1419 if (writer.debugstackmap) {
duke@1 1420 System.out.print(" offset_delta=" + offsetDelta);
duke@1 1421 }
duke@1 1422 }
duke@1 1423 if (writer.debugstackmap) {
duke@1 1424 System.out.print(" stack[" + 0 + "]=");
duke@1 1425 }
duke@1 1426 writer.writeStackMapType(stack);
duke@1 1427 }
duke@1 1428 }
duke@1 1429
duke@1 1430 static class ChopFrame extends StackMapTableFrame {
duke@1 1431 final int frameType;
duke@1 1432 final int offsetDelta;
duke@1 1433 ChopFrame(int frameType, int offsetDelta) {
duke@1 1434 this.frameType = frameType;
duke@1 1435 this.offsetDelta = offsetDelta;
duke@1 1436 }
duke@1 1437 int getFrameType() { return frameType; }
duke@1 1438 @Override
duke@1 1439 void write(ClassWriter writer) {
duke@1 1440 super.write(writer);
duke@1 1441 writer.databuf.appendChar(offsetDelta);
duke@1 1442 if (writer.debugstackmap) {
duke@1 1443 System.out.print(" offset_delta=" + offsetDelta);
duke@1 1444 }
duke@1 1445 }
duke@1 1446 }
duke@1 1447
duke@1 1448 static class AppendFrame extends StackMapTableFrame {
duke@1 1449 final int frameType;
duke@1 1450 final int offsetDelta;
duke@1 1451 final Type[] locals;
duke@1 1452 AppendFrame(int frameType, int offsetDelta, Type[] locals) {
duke@1 1453 this.frameType = frameType;
duke@1 1454 this.offsetDelta = offsetDelta;
duke@1 1455 this.locals = locals;
duke@1 1456 }
duke@1 1457 int getFrameType() { return frameType; }
duke@1 1458 @Override
duke@1 1459 void write(ClassWriter writer) {
duke@1 1460 super.write(writer);
duke@1 1461 writer.databuf.appendChar(offsetDelta);
duke@1 1462 if (writer.debugstackmap) {
duke@1 1463 System.out.print(" offset_delta=" + offsetDelta);
duke@1 1464 }
duke@1 1465 for (int i=0; i<locals.length; i++) {
duke@1 1466 if (writer.debugstackmap) System.out.print(" locals[" + i + "]=");
duke@1 1467 writer.writeStackMapType(locals[i]);
duke@1 1468 }
duke@1 1469 }
duke@1 1470 }
duke@1 1471
duke@1 1472 static class FullFrame extends StackMapTableFrame {
duke@1 1473 final int offsetDelta;
duke@1 1474 final Type[] locals;
duke@1 1475 final Type[] stack;
duke@1 1476 FullFrame(int offsetDelta, Type[] locals, Type[] stack) {
duke@1 1477 this.offsetDelta = offsetDelta;
duke@1 1478 this.locals = locals;
duke@1 1479 this.stack = stack;
duke@1 1480 }
duke@1 1481 int getFrameType() { return FULL_FRAME; }
duke@1 1482 @Override
duke@1 1483 void write(ClassWriter writer) {
duke@1 1484 super.write(writer);
duke@1 1485 writer.databuf.appendChar(offsetDelta);
duke@1 1486 writer.databuf.appendChar(locals.length);
duke@1 1487 if (writer.debugstackmap) {
duke@1 1488 System.out.print(" offset_delta=" + offsetDelta);
duke@1 1489 System.out.print(" nlocals=" + locals.length);
duke@1 1490 }
duke@1 1491 for (int i=0; i<locals.length; i++) {
duke@1 1492 if (writer.debugstackmap) System.out.print(" locals[" + i + "]=");
duke@1 1493 writer.writeStackMapType(locals[i]);
duke@1 1494 }
duke@1 1495
duke@1 1496 writer.databuf.appendChar(stack.length);
duke@1 1497 if (writer.debugstackmap) { System.out.print(" nstack=" + stack.length); }
duke@1 1498 for (int i=0; i<stack.length; i++) {
duke@1 1499 if (writer.debugstackmap) System.out.print(" stack[" + i + "]=");
duke@1 1500 writer.writeStackMapType(stack[i]);
duke@1 1501 }
duke@1 1502 }
duke@1 1503 }
duke@1 1504
duke@1 1505 /** Compare this frame with the previous frame and produce
duke@1 1506 * an entry of compressed stack map frame. */
duke@1 1507 static StackMapTableFrame getInstance(Code.StackMapFrame this_frame,
duke@1 1508 int prev_pc,
duke@1 1509 Type[] prev_locals,
duke@1 1510 Types types) {
duke@1 1511 Type[] locals = this_frame.locals;
duke@1 1512 Type[] stack = this_frame.stack;
duke@1 1513 int offset_delta = this_frame.pc - prev_pc - 1;
duke@1 1514 if (stack.length == 1) {
duke@1 1515 if (locals.length == prev_locals.length
duke@1 1516 && compare(prev_locals, locals, types) == 0) {
duke@1 1517 return new SameLocals1StackItemFrame(offset_delta, stack[0]);
duke@1 1518 }
duke@1 1519 } else if (stack.length == 0) {
duke@1 1520 int diff_length = compare(prev_locals, locals, types);
duke@1 1521 if (diff_length == 0) {
duke@1 1522 return new SameFrame(offset_delta);
duke@1 1523 } else if (-MAX_LOCAL_LENGTH_DIFF < diff_length && diff_length < 0) {
duke@1 1524 // APPEND
duke@1 1525 Type[] local_diff = new Type[-diff_length];
duke@1 1526 for (int i=prev_locals.length, j=0; i<locals.length; i++,j++) {
duke@1 1527 local_diff[j] = locals[i];
duke@1 1528 }
duke@1 1529 return new AppendFrame(SAME_FRAME_EXTENDED - diff_length,
duke@1 1530 offset_delta,
duke@1 1531 local_diff);
duke@1 1532 } else if (0 < diff_length && diff_length < MAX_LOCAL_LENGTH_DIFF) {
duke@1 1533 // CHOP
duke@1 1534 return new ChopFrame(SAME_FRAME_EXTENDED - diff_length,
duke@1 1535 offset_delta);
duke@1 1536 }
duke@1 1537 }
duke@1 1538 // FULL_FRAME
duke@1 1539 return new FullFrame(offset_delta, locals, stack);
duke@1 1540 }
duke@1 1541
duke@1 1542 static boolean isInt(Type t) {
jjg@1374 1543 return (t.getTag().isStrictSubRangeOf(INT) || t.hasTag(BOOLEAN));
duke@1 1544 }
duke@1 1545
duke@1 1546 static boolean isSameType(Type t1, Type t2, Types types) {
duke@1 1547 if (t1 == null) { return t2 == null; }
duke@1 1548 if (t2 == null) { return false; }
duke@1 1549
duke@1 1550 if (isInt(t1) && isInt(t2)) { return true; }
duke@1 1551
jjg@1374 1552 if (t1.hasTag(UNINITIALIZED_THIS)) {
jjg@1374 1553 return t2.hasTag(UNINITIALIZED_THIS);
jjg@1374 1554 } else if (t1.hasTag(UNINITIALIZED_OBJECT)) {
jjg@1374 1555 if (t2.hasTag(UNINITIALIZED_OBJECT)) {
duke@1 1556 return ((UninitializedType)t1).offset == ((UninitializedType)t2).offset;
duke@1 1557 } else {
duke@1 1558 return false;
duke@1 1559 }
jjg@1374 1560 } else if (t2.hasTag(UNINITIALIZED_THIS) || t2.hasTag(UNINITIALIZED_OBJECT)) {
duke@1 1561 return false;
duke@1 1562 }
duke@1 1563
duke@1 1564 return types.isSameType(t1, t2);
duke@1 1565 }
duke@1 1566
duke@1 1567 static int compare(Type[] arr1, Type[] arr2, Types types) {
duke@1 1568 int diff_length = arr1.length - arr2.length;
duke@1 1569 if (diff_length > MAX_LOCAL_LENGTH_DIFF || diff_length < -MAX_LOCAL_LENGTH_DIFF) {
duke@1 1570 return Integer.MAX_VALUE;
duke@1 1571 }
duke@1 1572 int len = (diff_length > 0) ? arr2.length : arr1.length;
duke@1 1573 for (int i=0; i<len; i++) {
duke@1 1574 if (!isSameType(arr1[i], arr2[i], types)) {
duke@1 1575 return Integer.MAX_VALUE;
duke@1 1576 }
duke@1 1577 }
duke@1 1578 return diff_length;
duke@1 1579 }
duke@1 1580 }
duke@1 1581
duke@1 1582 void writeFields(Scope.Entry e) {
duke@1 1583 // process them in reverse sibling order;
duke@1 1584 // i.e., process them in declaration order.
duke@1 1585 List<VarSymbol> vars = List.nil();
duke@1 1586 for (Scope.Entry i = e; i != null; i = i.sibling) {
duke@1 1587 if (i.sym.kind == VAR) vars = vars.prepend((VarSymbol)i.sym);
duke@1 1588 }
duke@1 1589 while (vars.nonEmpty()) {
duke@1 1590 writeField(vars.head);
duke@1 1591 vars = vars.tail;
duke@1 1592 }
duke@1 1593 }
duke@1 1594
duke@1 1595 void writeMethods(Scope.Entry e) {
duke@1 1596 List<MethodSymbol> methods = List.nil();
duke@1 1597 for (Scope.Entry i = e; i != null; i = i.sibling) {
duke@1 1598 if (i.sym.kind == MTH && (i.sym.flags() & HYPOTHETICAL) == 0)
duke@1 1599 methods = methods.prepend((MethodSymbol)i.sym);
duke@1 1600 }
duke@1 1601 while (methods.nonEmpty()) {
duke@1 1602 writeMethod(methods.head);
duke@1 1603 methods = methods.tail;
duke@1 1604 }
duke@1 1605 }
duke@1 1606
duke@1 1607 /** Emit a class file for a given class.
duke@1 1608 * @param c The class from which a class file is generated.
duke@1 1609 */
duke@1 1610 public JavaFileObject writeClass(ClassSymbol c)
duke@1 1611 throws IOException, PoolOverflow, StringOverflow
duke@1 1612 {
duke@1 1613 JavaFileObject outFile
duke@1 1614 = fileManager.getJavaFileForOutput(CLASS_OUTPUT,
duke@1 1615 c.flatname.toString(),
duke@1 1616 JavaFileObject.Kind.CLASS,
duke@1 1617 c.sourcefile);
duke@1 1618 OutputStream out = outFile.openOutputStream();
duke@1 1619 try {
duke@1 1620 writeClassFile(out, c);
duke@1 1621 if (verbose)
jjg@909 1622 log.printVerbose("wrote.file", outFile);
duke@1 1623 out.close();
duke@1 1624 out = null;
duke@1 1625 } finally {
duke@1 1626 if (out != null) {
jjg@1755 1627 // if we are propagating an exception, delete the file
duke@1 1628 out.close();
duke@1 1629 outFile.delete();
duke@1 1630 outFile = null;
duke@1 1631 }
duke@1 1632 }
duke@1 1633 return outFile; // may be null if write failed
duke@1 1634 }
duke@1 1635
duke@1 1636 /** Write class `c' to outstream `out'.
duke@1 1637 */
duke@1 1638 public void writeClassFile(OutputStream out, ClassSymbol c)
duke@1 1639 throws IOException, PoolOverflow, StringOverflow {
jjg@816 1640 Assert.check((c.flags() & COMPOUND) == 0);
duke@1 1641 databuf.reset();
duke@1 1642 poolbuf.reset();
rfield@1587 1643 signatureGen.reset();
duke@1 1644 pool = c.pool;
duke@1 1645 innerClasses = null;
duke@1 1646 innerClassesQueue = null;
vromero@1452 1647 bootstrapMethods = new LinkedHashMap<DynamicMethod, MethodHandle>();
duke@1 1648
duke@1 1649 Type supertype = types.supertype(c.type);
duke@1 1650 List<Type> interfaces = types.interfaces(c.type);
duke@1 1651 List<Type> typarams = c.type.getTypeArguments();
duke@1 1652
mcimadamore@1393 1653 int flags = adjustFlags(c.flags() & ~DEFAULT);
duke@1 1654 if ((flags & PROTECTED) != 0) flags |= PUBLIC;
duke@1 1655 flags = flags & ClassFlags & ~STRICTFP;
duke@1 1656 if ((flags & INTERFACE) == 0) flags |= ACC_SUPER;
duke@1 1657 if (c.isInner() && c.name.isEmpty()) flags &= ~FINAL;
duke@1 1658 if (dumpClassModifiers) {
jjg@1135 1659 PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
jjg@1135 1660 pw.println();
jjg@1135 1661 pw.println("CLASSFILE " + c.getQualifiedName());
jjg@1135 1662 pw.println("---" + flagNames(flags));
duke@1 1663 }
duke@1 1664 databuf.appendChar(flags);
duke@1 1665
duke@1 1666 databuf.appendChar(pool.put(c));
jjg@1374 1667 databuf.appendChar(supertype.hasTag(CLASS) ? pool.put(supertype.tsym) : 0);
duke@1 1668 databuf.appendChar(interfaces.length());
duke@1 1669 for (List<Type> l = interfaces; l.nonEmpty(); l = l.tail)
duke@1 1670 databuf.appendChar(pool.put(l.head.tsym));
duke@1 1671 int fieldsCount = 0;
duke@1 1672 int methodsCount = 0;
duke@1 1673 for (Scope.Entry e = c.members().elems; e != null; e = e.sibling) {
duke@1 1674 switch (e.sym.kind) {
duke@1 1675 case VAR: fieldsCount++; break;
duke@1 1676 case MTH: if ((e.sym.flags() & HYPOTHETICAL) == 0) methodsCount++;
duke@1 1677 break;
duke@1 1678 case TYP: enterInner((ClassSymbol)e.sym); break;
jjg@816 1679 default : Assert.error();
duke@1 1680 }
duke@1 1681 }
mcimadamore@1086 1682
mcimadamore@1086 1683 if (c.trans_local != null) {
mcimadamore@1086 1684 for (ClassSymbol local : c.trans_local) {
mcimadamore@1086 1685 enterInner(local);
mcimadamore@1086 1686 }
mcimadamore@1086 1687 }
mcimadamore@1086 1688
duke@1 1689 databuf.appendChar(fieldsCount);
duke@1 1690 writeFields(c.members().elems);
duke@1 1691 databuf.appendChar(methodsCount);
duke@1 1692 writeMethods(c.members().elems);
duke@1 1693
duke@1 1694 int acountIdx = beginAttrs();
duke@1 1695 int acount = 0;
duke@1 1696
duke@1 1697 boolean sigReq =
mcimadamore@297 1698 typarams.length() != 0 || supertype.allparams().length() != 0;
duke@1 1699 for (List<Type> l = interfaces; !sigReq && l.nonEmpty(); l = l.tail)
mcimadamore@297 1700 sigReq = l.head.allparams().length() != 0;
duke@1 1701 if (sigReq) {
jjg@816 1702 Assert.check(source.allowGenerics());
duke@1 1703 int alenIdx = writeAttr(names.Signature);
rfield@1587 1704 if (typarams.length() != 0) signatureGen.assembleParamsSig(typarams);
rfield@1587 1705 signatureGen.assembleSig(supertype);
duke@1 1706 for (List<Type> l = interfaces; l.nonEmpty(); l = l.tail)
rfield@1587 1707 signatureGen.assembleSig(l.head);
rfield@1587 1708 databuf.appendChar(pool.put(signatureGen.toName()));
rfield@1587 1709 signatureGen.reset();
duke@1 1710 endAttr(alenIdx);
duke@1 1711 acount++;
duke@1 1712 }
duke@1 1713
duke@1 1714 if (c.sourcefile != null && emitSourceFile) {
duke@1 1715 int alenIdx = writeAttr(names.SourceFile);
duke@1 1716 // WHM 6/29/1999: Strip file path prefix. We do it here at
duke@1 1717 // the last possible moment because the sourcefile may be used
duke@1 1718 // elsewhere in error diagnostics. Fixes 4241573.
duke@1 1719 //databuf.appendChar(c.pool.put(c.sourcefile));
jjg@415 1720 String simpleName = BaseFileObject.getSimpleName(c.sourcefile);
jjg@415 1721 databuf.appendChar(c.pool.put(names.fromString(simpleName)));
duke@1 1722 endAttr(alenIdx);
duke@1 1723 acount++;
duke@1 1724 }
duke@1 1725
duke@1 1726 if (genCrt) {
duke@1 1727 // Append SourceID attribute
duke@1 1728 int alenIdx = writeAttr(names.SourceID);
duke@1 1729 databuf.appendChar(c.pool.put(names.fromString(Long.toString(getLastModified(c.sourcefile)))));
duke@1 1730 endAttr(alenIdx);
duke@1 1731 acount++;
duke@1 1732 // Append CompilationID attribute
duke@1 1733 alenIdx = writeAttr(names.CompilationID);
duke@1 1734 databuf.appendChar(c.pool.put(names.fromString(Long.toString(System.currentTimeMillis()))));
duke@1 1735 endAttr(alenIdx);
duke@1 1736 acount++;
duke@1 1737 }
duke@1 1738
duke@1 1739 acount += writeFlagAttrs(c.flags());
jfranck@1464 1740 acount += writeJavaAnnotations(c.getRawAttributes());
jjg@1755 1741 acount += writeTypeAnnotations(c.getRawTypeAttributes(), false);
duke@1 1742 acount += writeEnclosingMethodAttribute(c);
ksrini@1309 1743 acount += writeExtraClassAttributes(c);
duke@1 1744
duke@1 1745 poolbuf.appendInt(JAVA_MAGIC);
duke@1 1746 poolbuf.appendChar(target.minorVersion);
duke@1 1747 poolbuf.appendChar(target.majorVersion);
duke@1 1748
duke@1 1749 writePool(c.pool);
duke@1 1750
duke@1 1751 if (innerClasses != null) {
duke@1 1752 writeInnerClasses();
duke@1 1753 acount++;
duke@1 1754 }
mcimadamore@1336 1755
mcimadamore@1336 1756 if (!bootstrapMethods.isEmpty()) {
mcimadamore@1336 1757 writeBootstrapMethods();
mcimadamore@1336 1758 acount++;
mcimadamore@1336 1759 }
mcimadamore@1336 1760
duke@1 1761 endAttrs(acountIdx, acount);
duke@1 1762
duke@1 1763 poolbuf.appendBytes(databuf.elems, 0, databuf.length);
duke@1 1764 out.write(poolbuf.elems, 0, poolbuf.length);
duke@1 1765
duke@1 1766 pool = c.pool = null; // to conserve space
duke@1 1767 }
duke@1 1768
ksrini@1309 1769 /**Allows subclasses to write additional class attributes
ksrini@1309 1770 *
ksrini@1309 1771 * @return the number of attributes written
ksrini@1309 1772 */
ksrini@1309 1773 protected int writeExtraClassAttributes(ClassSymbol c) {
ksrini@1309 1774 return 0;
ksrini@1309 1775 }
ksrini@1309 1776
duke@1 1777 int adjustFlags(final long flags) {
duke@1 1778 int result = (int)flags;
duke@1 1779 if ((flags & SYNTHETIC) != 0 && !target.useSyntheticFlag())
duke@1 1780 result &= ~SYNTHETIC;
duke@1 1781 if ((flags & ENUM) != 0 && !target.useEnumFlag())
duke@1 1782 result &= ~ENUM;
duke@1 1783 if ((flags & ANNOTATION) != 0 && !target.useAnnotationFlag())
duke@1 1784 result &= ~ANNOTATION;
duke@1 1785
duke@1 1786 if ((flags & BRIDGE) != 0 && target.useBridgeFlag())
duke@1 1787 result |= ACC_BRIDGE;
duke@1 1788 if ((flags & VARARGS) != 0 && target.useVarargsFlag())
duke@1 1789 result |= ACC_VARARGS;
mcimadamore@1393 1790 if ((flags & DEFAULT) != 0)
mcimadamore@1393 1791 result &= ~ABSTRACT;
duke@1 1792 return result;
duke@1 1793 }
duke@1 1794
duke@1 1795 long getLastModified(FileObject filename) {
duke@1 1796 long mod = 0;
duke@1 1797 try {
duke@1 1798 mod = filename.getLastModified();
duke@1 1799 } catch (SecurityException e) {
duke@1 1800 throw new AssertionError("CRT: couldn't get source file modification date: " + e.getMessage());
duke@1 1801 }
duke@1 1802 return mod;
duke@1 1803 }
duke@1 1804 }

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