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| 1 | /* | ||
| 2 | * Copyright (c) 1994, 2004, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.tools.javac; | ||
| 27 | |||
| 28 | import sun.tools.java.*; | ||
| 29 | import sun.tools.tree.*; | ||
| 30 | import sun.tools.tree.CompoundStatement; | ||
| 31 | import sun.tools.asm.Assembler; | ||
| 32 | import sun.tools.asm.ConstantPool; | ||
| 33 | import java.util.Vector; | ||
| 34 | import java.util.Enumeration; | ||
| 35 | import java.util.Hashtable; | ||
| 36 | import java.util.Iterator; | ||
| 37 | import java.io.IOException; | ||
| 38 | import java.io.OutputStream; | ||
| 39 | import java.io.DataOutputStream; | ||
| 40 | import java.io.ByteArrayOutputStream; | ||
| 41 | import java.io.File; | ||
| 42 | |||
| 43 | /** | ||
| 44 | * This class represents an Java class as it is read from | ||
| 45 | * an Java source file. | ||
| 46 | * | ||
| 47 | * WARNING: The contents of this source file are not part of any | ||
| 48 | * supported API. Code that depends on them does so at its own risk: | ||
| 49 | * they are subject to change or removal without notice. | ||
| 50 | */ | ||
| 51 | @Deprecated | ||
| 52 | public | ||
| 53 | class SourceClass extends ClassDefinition { | ||
| 54 | |||
| 55 | /** | ||
| 56 | * The toplevel environment, shared with the parser | ||
| 57 | */ | ||
| 58 | Environment toplevelEnv; | ||
| 59 | |||
| 60 | /** | ||
| 61 | * The default constructor | ||
| 62 | */ | ||
| 63 | SourceMember defConstructor; | ||
| 64 | |||
| 65 | /** | ||
| 66 | * The constant pool | ||
| 67 | */ | ||
| 68 | ConstantPool tab = new ConstantPool(); | ||
| 69 | |||
| 70 | /** | ||
| 71 | * The list of class dependencies | ||
| 72 | */ | ||
| 73 | Hashtable deps = new Hashtable(11); | ||
| 74 | |||
| 75 | /** | ||
| 76 | * The field used to represent "this" in all of my code. | ||
| 77 | */ | ||
| 78 | LocalMember thisArg; | ||
| 79 | |||
| 80 | /** | ||
| 81 | * Last token of class, as reported by parser. | ||
| 82 | */ | ||
| 83 | long endPosition; | ||
| 84 | |||
| 85 | /** | ||
| 86 | * Access methods for constructors are distinguished from | ||
| 87 | * the constructors themselves by a dummy first argument. | ||
| 88 | * A unique type used for this purpose and shared by all | ||
| 89 | * constructor access methods within a package-member class is | ||
| 90 | * maintained here. | ||
| 91 | * <p> | ||
| 92 | * This field is null except in an outermost class containing | ||
| 93 | * one or more classes needing such an access method. | ||
| 94 | */ | ||
| 95 | private Type dummyArgumentType = null; | ||
| 96 | |||
| 97 | /** | ||
| 98 | * Constructor | ||
| 99 | */ | ||
| 100 | public SourceClass(Environment env, long where, | ||
| 101 | ClassDeclaration declaration, String documentation, | ||
| 102 | int modifiers, IdentifierToken superClass, | ||
| 103 | IdentifierToken interfaces[], | ||
| 104 | SourceClass outerClass, Identifier localName) { | ||
| 105 | super(env.getSource(), where, | ||
| 106 | declaration, modifiers, superClass, interfaces); | ||
| 107 | setOuterClass(outerClass); | ||
| 108 | |||
| 109 | this.toplevelEnv = env; | ||
| 110 | this.documentation = documentation; | ||
| 111 | |||
| 112 | if (ClassDefinition.containsDeprecated(documentation)) { | ||
| 113 | this.modifiers |= M_DEPRECATED; | ||
| 114 | } | ||
| 115 | |||
| 116 | // Check for a package level class which is declared static. | ||
| 117 | if (isStatic() && outerClass == null) { | ||
| 118 | env.error(where, "static.class", this); | ||
| 119 | this.modifiers &=~ M_STATIC; | ||
| 120 | } | ||
| 121 | |||
| 122 | // Inner classes cannot be static, nor can they be interfaces | ||
| 123 | // (which are implicitly static). Static classes and interfaces | ||
| 124 | // can only occur as top-level entities. | ||
| 125 | // | ||
| 126 | // Note that we do not have to check for local classes declared | ||
| 127 | // to be static (this is currently caught by the parser) but | ||
| 128 | // we check anyway in case the parser is modified to allow this. | ||
| 129 | if (isLocal() || (outerClass != null && !outerClass.isTopLevel())) { | ||
| 130 | if (isInterface()) { | ||
| 131 | env.error(where, "inner.interface"); | ||
| 132 | } else if (isStatic()) { | ||
| 133 | env.error(where, "static.inner.class", this); | ||
| 134 | this.modifiers &=~ M_STATIC; | ||
| 135 | if (innerClassMember != null) { | ||
| 136 | innerClassMember.subModifiers(M_STATIC); | ||
| 137 | } | ||
| 138 | } | ||
| 139 | } | ||
| 140 | |||
| 141 | if (isPrivate() && outerClass == null) { | ||
| 142 | env.error(where, "private.class", this); | ||
| 143 | this.modifiers &=~ M_PRIVATE; | ||
| 144 | } | ||
| 145 | if (isProtected() && outerClass == null) { | ||
| 146 | env.error(where, "protected.class", this); | ||
| 147 | this.modifiers &=~ M_PROTECTED; | ||
| 148 | } | ||
| 149 | /*----* | ||
| 150 | if ((isPublic() || isProtected()) && isInsideLocal()) { | ||
| 151 | env.error(where, "warn.public.local.class", this); | ||
| 152 | } | ||
| 153 | *----*/ | ||
| 154 | |||
| 155 | // maybe define an uplevel "A.this" current instance field | ||
| 156 | if (!isTopLevel() && !isLocal()) { | ||
| 157 | LocalMember outerArg = ((SourceClass)outerClass).getThisArgument(); | ||
| 158 | UplevelReference r = getReference(outerArg); | ||
| 159 | setOuterMember(r.getLocalField(env)); | ||
| 160 | } | ||
| 161 | |||
| 162 | // Set simple, unmangled local name for a local or anonymous class. | ||
| 163 | // NOTE: It would be OK to do this unconditionally, as null is the | ||
| 164 | // correct value for a member (non-local) class. | ||
| 165 | if (localName != null) | ||
| 166 | setLocalName(localName); | ||
| 167 | |||
| 168 | // Check for inner class with same simple name as one of | ||
| 169 | // its enclosing classes. Note that 'getLocalName' returns | ||
| 170 | // the simple, unmangled source-level name of any class. | ||
| 171 | // The previous version of this code was not careful to avoid | ||
| 172 | // mangled local class names. This version fixes 4047746. | ||
| 173 | Identifier thisName = getLocalName(); | ||
| 174 | if (thisName != idNull) { | ||
| 175 | // Test above suppresses error for nested anonymous classes, | ||
| 176 | // which have an internal "name", but are not named in source code. | ||
| 177 | for (ClassDefinition scope = outerClass; scope != null; | ||
| 178 | scope = scope.getOuterClass()) { | ||
| 179 | Identifier outerName = scope.getLocalName(); | ||
| 180 | if (thisName.equals(outerName)) | ||
| 181 | env.error(where, "inner.redefined", thisName); | ||
| 182 | } | ||
| 183 | } | ||
| 184 | } | ||
| 185 | |||
| 186 | /** | ||
| 187 | * Return last position in this class. | ||
| 188 | * @see #getWhere | ||
| 189 | */ | ||
| 190 | public long getEndPosition() { | ||
| 191 | return endPosition; | ||
| 192 | } | ||
| 193 | |||
| 194 | public void setEndPosition(long endPosition) { | ||
| 195 | this.endPosition = endPosition; | ||
| 196 | } | ||
| 197 | |||
| 198 | |||
| 199 | // JCOV | ||
| 200 | /** | ||
| 201 | * Return absolute name of source file | ||
| 202 | */ | ||
| 203 | public String getAbsoluteName() { | ||
| 204 | String AbsName = ((ClassFile)getSource()).getAbsoluteName(); | ||
| 205 | |||
| 206 | return AbsName; | ||
| 207 | } | ||
| 208 | //end JCOV | ||
| 209 | |||
| 210 | /** | ||
| 211 | * Return imports | ||
| 212 | */ | ||
| 213 | public Imports getImports() { | ||
| 214 | return toplevelEnv.getImports(); | ||
| 215 | } | ||
| 216 | |||
| 217 | /** | ||
| 218 | * Find or create my "this" argument, which is used for all methods. | ||
| 219 | */ | ||
| 220 | public LocalMember getThisArgument() { | ||
| 221 | if (thisArg == null) { | ||
| 222 | thisArg = new LocalMember(where, this, 0, getType(), idThis); | ||
| 223 | } | ||
| 224 | return thisArg; | ||
| 225 | } | ||
| 226 | |||
| 227 | /** | ||
| 228 | * Add a dependency | ||
| 229 | */ | ||
| 230 | public void addDependency(ClassDeclaration c) { | ||
| 231 | if (tab != null) { | ||
| 232 | tab.put(c); | ||
| 233 | } | ||
| 234 | // If doing -xdepend option, save away list of class dependencies | ||
| 235 | // making sure to NOT include duplicates or the class we are in | ||
| 236 | // (Hashtable's put() makes sure we don't have duplicates) | ||
| 237 | if ( toplevelEnv.print_dependencies() && c != getClassDeclaration() ) { | ||
| 238 | deps.put(c,c); | ||
| 239 | } | ||
| 240 | } | ||
| 241 | |||
| 242 | /** | ||
| 243 | * Add a field (check it first) | ||
| 244 | */ | ||
| 245 | public void addMember(Environment env, MemberDefinition f) { | ||
| 246 | // Make sure the access permissions are self-consistent: | ||
| 247 | switch (f.getModifiers() & (M_PUBLIC | M_PRIVATE | M_PROTECTED)) { | ||
| 248 | case M_PUBLIC: | ||
| 249 | case M_PRIVATE: | ||
| 250 | case M_PROTECTED: | ||
| 251 | case 0: | ||
| 252 | break; | ||
| 253 | default: | ||
| 254 | env.error(f.getWhere(), "inconsistent.modifier", f); | ||
| 255 | // Cut out the more restrictive modifier(s): | ||
| 256 | if (f.isPublic()) { | ||
| 257 | f.subModifiers(M_PRIVATE | M_PROTECTED); | ||
| 258 | } else { | ||
| 259 | f.subModifiers(M_PRIVATE); | ||
| 260 | } | ||
| 261 | break; | ||
| 262 | } | ||
| 263 | |||
| 264 | // Note exemption for synthetic members below. | ||
| 265 | if (f.isStatic() && !isTopLevel() && !f.isSynthetic()) { | ||
| 266 | if (f.isMethod()) { | ||
| 267 | env.error(f.getWhere(), "static.inner.method", f, this); | ||
| 268 | f.subModifiers(M_STATIC); | ||
| 269 | } else if (f.isVariable()) { | ||
| 270 | if (!f.isFinal() || f.isBlankFinal()) { | ||
| 271 | env.error(f.getWhere(), "static.inner.field", f.getName(), this); | ||
| 272 | f.subModifiers(M_STATIC); | ||
| 273 | } | ||
| 274 | // Even if a static passes this test, there is still another | ||
| 275 | // check in 'SourceMember.check'. The check is delayed so | ||
| 276 | // that the initializer may be inspected more closely, using | ||
| 277 | // 'isConstant()'. Part of fix for 4095568. | ||
| 278 | } else { | ||
| 279 | // Static inner classes are diagnosed in 'SourceClass.<init>'. | ||
| 280 | f.subModifiers(M_STATIC); | ||
| 281 | } | ||
| 282 | } | ||
| 283 | |||
| 284 | if (f.isMethod()) { | ||
| 285 | if (f.isConstructor()) { | ||
| 286 | if (f.getClassDefinition().isInterface()) { | ||
| 287 | env.error(f.getWhere(), "intf.constructor"); | ||
| 288 | return; | ||
| 289 | } | ||
| 290 | if (f.isNative() || f.isAbstract() || | ||
| 291 | f.isStatic() || f.isSynchronized() || f.isFinal()) { | ||
| 292 | env.error(f.getWhere(), "constr.modifier", f); | ||
| 293 | f.subModifiers(M_NATIVE | M_ABSTRACT | | ||
| 294 | M_STATIC | M_SYNCHRONIZED | M_FINAL); | ||
| 295 | } | ||
| 296 | } else if (f.isInitializer()) { | ||
| 297 | if (f.getClassDefinition().isInterface()) { | ||
| 298 | env.error(f.getWhere(), "intf.initializer"); | ||
| 299 | return; | ||
| 300 | } | ||
| 301 | } | ||
| 302 | |||
| 303 | // f is not allowed to return an array of void | ||
| 304 | if ((f.getType().getReturnType()).isVoidArray()) { | ||
| 305 | env.error(f.getWhere(), "void.array"); | ||
| 306 | } | ||
| 307 | |||
| 308 | if (f.getClassDefinition().isInterface() && | ||
| 309 | (f.isStatic() || f.isSynchronized() || f.isNative() | ||
| 310 | || f.isFinal() || f.isPrivate() || f.isProtected())) { | ||
| 311 | env.error(f.getWhere(), "intf.modifier.method", f); | ||
| 312 | f.subModifiers(M_STATIC | M_SYNCHRONIZED | M_NATIVE | | ||
| 313 | M_FINAL | M_PRIVATE); | ||
| 314 | } | ||
| 315 | if (f.isTransient()) { | ||
| 316 | env.error(f.getWhere(), "transient.meth", f); | ||
| 317 | f.subModifiers(M_TRANSIENT); | ||
| 318 | } | ||
| 319 | if (f.isVolatile()) { | ||
| 320 | env.error(f.getWhere(), "volatile.meth", f); | ||
| 321 | f.subModifiers(M_VOLATILE); | ||
| 322 | } | ||
| 323 | if (f.isAbstract()) { | ||
| 324 | if (f.isPrivate()) { | ||
| 325 | env.error(f.getWhere(), "abstract.private.modifier", f); | ||
| 326 | f.subModifiers(M_PRIVATE); | ||
| 327 | } | ||
| 328 | if (f.isStatic()) { | ||
| 329 | env.error(f.getWhere(), "abstract.static.modifier", f); | ||
| 330 | f.subModifiers(M_STATIC); | ||
| 331 | } | ||
| 332 | if (f.isFinal()) { | ||
| 333 | env.error(f.getWhere(), "abstract.final.modifier", f); | ||
| 334 | f.subModifiers(M_FINAL); | ||
| 335 | } | ||
| 336 | if (f.isNative()) { | ||
| 337 | env.error(f.getWhere(), "abstract.native.modifier", f); | ||
| 338 | f.subModifiers(M_NATIVE); | ||
| 339 | } | ||
| 340 | if (f.isSynchronized()) { | ||
| 341 | env.error(f.getWhere(),"abstract.synchronized.modifier",f); | ||
| 342 | f.subModifiers(M_SYNCHRONIZED); | ||
| 343 | } | ||
| 344 | } | ||
| 345 | if (f.isAbstract() || f.isNative()) { | ||
| 346 | if (f.getValue() != null) { | ||
| 347 | env.error(f.getWhere(), "invalid.meth.body", f); | ||
| 348 | f.setValue(null); | ||
| 349 | } | ||
| 350 | } else { | ||
| 351 | if (f.getValue() == null) { | ||
| 352 | if (f.isConstructor()) { | ||
| 353 | env.error(f.getWhere(), "no.constructor.body", f); | ||
| 354 | } else { | ||
| 355 | env.error(f.getWhere(), "no.meth.body", f); | ||
| 356 | } | ||
| 357 | f.addModifiers(M_ABSTRACT); | ||
| 358 | } | ||
| 359 | } | ||
| 360 | Vector arguments = f.getArguments(); | ||
| 361 | if (arguments != null) { | ||
| 362 | // arguments can be null if this is an implicit abstract method | ||
| 363 | int argumentLength = arguments.size(); | ||
| 364 | Type argTypes[] = f.getType().getArgumentTypes(); | ||
| 365 | for (int i = 0; i < argTypes.length; i++) { | ||
| 366 | Object arg = arguments.elementAt(i); | ||
| 367 | long where = f.getWhere(); | ||
| 368 | if (arg instanceof MemberDefinition) { | ||
| 369 | where = ((MemberDefinition)arg).getWhere(); | ||
| 370 | arg = ((MemberDefinition)arg).getName(); | ||
| 371 | } | ||
| 372 | // (arg should be an Identifier now) | ||
| 373 | if (argTypes[i].isType(TC_VOID) | ||
| 374 | || argTypes[i].isVoidArray()) { | ||
| 375 | env.error(where, "void.argument", arg); | ||
| 376 | } | ||
| 377 | } | ||
| 378 | } | ||
| 379 | } else if (f.isInnerClass()) { | ||
| 380 | if (f.isVolatile() || | ||
| 381 | f.isTransient() || f.isNative() || f.isSynchronized()) { | ||
| 382 | env.error(f.getWhere(), "inner.modifier", f); | ||
| 383 | f.subModifiers(M_VOLATILE | M_TRANSIENT | | ||
| 384 | M_NATIVE | M_SYNCHRONIZED); | ||
| 385 | } | ||
| 386 | // same check as for fields, below: | ||
| 387 | if (f.getClassDefinition().isInterface() && | ||
| 388 | (f.isPrivate() || f.isProtected())) { | ||
| 389 | env.error(f.getWhere(), "intf.modifier.field", f); | ||
| 390 | f.subModifiers(M_PRIVATE | M_PROTECTED); | ||
| 391 | f.addModifiers(M_PUBLIC); | ||
| 392 | // Fix up the class itself to agree with | ||
| 393 | // the inner-class member. | ||
| 394 | ClassDefinition c = f.getInnerClass(); | ||
| 395 | c.subModifiers(M_PRIVATE | M_PROTECTED); | ||
| 396 | c.addModifiers(M_PUBLIC); | ||
| 397 | } | ||
| 398 | } else { | ||
| 399 | if (f.getType().isType(TC_VOID) || f.getType().isVoidArray()) { | ||
| 400 | env.error(f.getWhere(), "void.inst.var", f.getName()); | ||
| 401 | // REMIND: set type to error | ||
| 402 | return; | ||
| 403 | } | ||
| 404 | |||
| 405 | if (f.isSynchronized() || f.isAbstract() || f.isNative()) { | ||
| 406 | env.error(f.getWhere(), "var.modifier", f); | ||
| 407 | f.subModifiers(M_SYNCHRONIZED | M_ABSTRACT | M_NATIVE); | ||
| 408 | } | ||
| 409 | if (f.isStrict()) { | ||
| 410 | env.error(f.getWhere(), "var.floatmodifier", f); | ||
| 411 | f.subModifiers(M_STRICTFP); | ||
| 412 | } | ||
| 413 | if (f.isTransient() && isInterface()) { | ||
| 414 | env.error(f.getWhere(), "transient.modifier", f); | ||
| 415 | f.subModifiers(M_TRANSIENT); | ||
| 416 | } | ||
| 417 | if (f.isVolatile() && (isInterface() || f.isFinal())) { | ||
| 418 | env.error(f.getWhere(), "volatile.modifier", f); | ||
| 419 | f.subModifiers(M_VOLATILE); | ||
| 420 | } | ||
| 421 | if (f.isFinal() && (f.getValue() == null) && isInterface()) { | ||
| 422 | env.error(f.getWhere(), "initializer.needed", f); | ||
| 423 | f.subModifiers(M_FINAL); | ||
| 424 | } | ||
| 425 | |||
| 426 | if (f.getClassDefinition().isInterface() && | ||
| 427 | (f.isPrivate() || f.isProtected())) { | ||
| 428 | env.error(f.getWhere(), "intf.modifier.field", f); | ||
| 429 | f.subModifiers(M_PRIVATE | M_PROTECTED); | ||
| 430 | f.addModifiers(M_PUBLIC); | ||
| 431 | } | ||
| 432 | } | ||
| 433 | // Do not check for repeated methods here: Types are not yet resolved. | ||
| 434 | if (!f.isInitializer()) { | ||
| 435 | for (MemberDefinition f2 = getFirstMatch(f.getName()); | ||
| 436 | f2 != null; f2 = f2.getNextMatch()) { | ||
| 437 | if (f.isVariable() && f2.isVariable()) { | ||
| 438 | env.error(f.getWhere(), "var.multidef", f, f2); | ||
| 439 | return; | ||
| 440 | } else if (f.isInnerClass() && f2.isInnerClass() && | ||
| 441 | !f.getInnerClass().isLocal() && | ||
| 442 | !f2.getInnerClass().isLocal()) { | ||
| 443 | // Found a duplicate inner-class member. | ||
| 444 | // Duplicate local classes are detected in | ||
| 445 | // 'VarDeclarationStatement.checkDeclaration'. | ||
| 446 | env.error(f.getWhere(), "inner.class.multidef", f); | ||
| 447 | return; | ||
| 448 | } | ||
| 449 | } | ||
| 450 | } | ||
| 451 | |||
| 452 | super.addMember(env, f); | ||
| 453 | } | ||
| 454 | |||
| 455 | /** | ||
| 456 | * Create an environment suitable for checking this class. | ||
| 457 | * Make sure the source and imports are set right. | ||
| 458 | * Make sure the environment contains no context information. | ||
| 459 | * (Actually, throw away env altogether and use toplevelEnv instead.) | ||
| 460 | */ | ||
| 461 | public Environment setupEnv(Environment env) { | ||
| 462 | // In some cases, we go to some trouble to create the 'env' argument | ||
| 463 | // that is discarded. We should remove the 'env' argument entirely | ||
| 464 | // as well as the vestigial code that supports it. See comments on | ||
| 465 | // 'newEnvironment' in 'checkInternal' below. | ||
| 466 | return new Environment(toplevelEnv, this); | ||
| 467 | } | ||
| 468 | |||
| 469 | /** | ||
| 470 | * A source class never reports deprecation, since the compiler | ||
| 471 | * allows access to deprecated features that are being compiled | ||
| 472 | * in the same job. | ||
| 473 | */ | ||
| 474 | public boolean reportDeprecated(Environment env) { | ||
| 475 | return false; | ||
| 476 | } | ||
| 477 | |||
| 478 | /** | ||
| 479 | * See if the source file of this class is right. | ||
| 480 | * @see ClassDefinition#noteUsedBy | ||
| 481 | */ | ||
| 482 | public void noteUsedBy(ClassDefinition ref, long where, Environment env) { | ||
| 483 | // If this class is not public, watch for cross-file references. | ||
| 484 | super.noteUsedBy(ref, where, env); | ||
| 485 | ClassDefinition def = this; | ||
| 486 | while (def.isInnerClass()) { | ||
| 487 | def = def.getOuterClass(); | ||
| 488 | } | ||
| 489 | if (def.isPublic()) { | ||
| 490 | return; // already checked | ||
| 491 | } | ||
| 492 | while (ref.isInnerClass()) { | ||
| 493 | ref = ref.getOuterClass(); | ||
| 494 | } | ||
| 495 | if (def.getSource().equals(ref.getSource())) { | ||
| 496 | return; // intra-file reference | ||
| 497 | } | ||
| 498 | ((SourceClass)def).checkSourceFile(env, where); | ||
| 499 | } | ||
| 500 | |||
| 501 | /** | ||
| 502 | * Check this class and all its fields. | ||
| 503 | */ | ||
| 504 | public void check(Environment env) throws ClassNotFound { | ||
| 505 | if (tracing) env.dtEnter("SourceClass.check: " + getName()); | ||
| 506 | if (isInsideLocal()) { | ||
| 507 | // An inaccessible class gets checked when the surrounding | ||
| 508 | // block is checked. | ||
| 509 | // QUERY: Should this case ever occur? | ||
| 510 | // What would invoke checking of a local class aside from | ||
| 511 | // checking the surrounding method body? | ||
| 512 | if (tracing) env.dtEvent("SourceClass.check: INSIDE LOCAL " + | ||
| 513 | getOuterClass().getName()); | ||
| 514 | getOuterClass().check(env); | ||
| 515 | } else { | ||
| 516 | if (isInnerClass()) { | ||
| 517 | if (tracing) env.dtEvent("SourceClass.check: INNER CLASS " + | ||
| 518 | getOuterClass().getName()); | ||
| 519 | // Make sure the outer is checked first. | ||
| 520 | ((SourceClass)getOuterClass()).maybeCheck(env); | ||
| 521 | } | ||
| 522 | Vset vset = new Vset(); | ||
| 523 | Context ctx = null; | ||
| 524 | if (tracing) | ||
| 525 | env.dtEvent("SourceClass.check: CHECK INTERNAL " + getName()); | ||
| 526 | vset = checkInternal(setupEnv(env), ctx, vset); | ||
| 527 | // drop vset here | ||
| 528 | } | ||
| 529 | if (tracing) env.dtExit("SourceClass.check: " + getName()); | ||
| 530 | } | ||
| 531 | |||
| 532 | private void maybeCheck(Environment env) throws ClassNotFound { | ||
| 533 | if (tracing) env.dtEvent("SourceClass.maybeCheck: " + getName()); | ||
| 534 | // Check this class now, if it has not yet been checked. | ||
| 535 | // Cf. Main.compile(). Perhaps this code belongs there somehow. | ||
| 536 | ClassDeclaration c = getClassDeclaration(); | ||
| 537 | if (c.getStatus() == CS_PARSED) { | ||
| 538 | // Set it first to avoid vicious circularity: | ||
| 539 | c.setDefinition(this, CS_CHECKED); | ||
| 540 | check(env); | ||
| 541 | } | ||
| 542 | } | ||
| 543 | |||
| 544 | private Vset checkInternal(Environment env, Context ctx, Vset vset) | ||
| 545 | throws ClassNotFound { | ||
| 546 | Identifier nm = getClassDeclaration().getName(); | ||
| 547 | if (env.verbose()) { | ||
| 548 | env.output("[checking class " + nm + "]"); | ||
| 549 | } | ||
| 550 | |||
| 551 | // Save context enclosing class for later access | ||
| 552 | // by 'ClassDefinition.resolveName.' | ||
| 553 | classContext = ctx; | ||
| 554 | |||
| 555 | // At present, the call to 'newEnvironment' is not needed. | ||
| 556 | // The incoming environment to 'basicCheck' is always passed to | ||
| 557 | // 'setupEnv', which discards it completely. This is also the | ||
| 558 | // only call to 'newEnvironment', which is now apparently dead code. | ||
| 559 | basicCheck(Context.newEnvironment(env, ctx)); | ||
| 560 | |||
| 561 | // Validate access for all inner-class components | ||
| 562 | // of a qualified name, not just the last one, which | ||
| 563 | // is checked below. Yes, this is a dirty hack... | ||
| 564 | // Much of this code was cribbed from 'checkSupers'. | ||
| 565 | // Part of fix for 4094658. | ||
| 566 | ClassDeclaration sup = getSuperClass(); | ||
| 567 | if (sup != null) { | ||
| 568 | long where = getWhere(); | ||
| 569 | where = IdentifierToken.getWhere(superClassId, where); | ||
| 570 | env.resolveExtendsByName(where, this, sup.getName()); | ||
| 571 | } | ||
| 572 | for (int i = 0 ; i < interfaces.length ; i++) { | ||
| 573 | ClassDeclaration intf = interfaces[i]; | ||
| 574 | long where = getWhere(); | ||
| 575 | // Error localization fails here if interfaces were | ||
| 576 | // elided during error recovery from an invalid one. | ||
| 577 | if (interfaceIds != null | ||
| 578 | && interfaceIds.length == interfaces.length) { | ||
| 579 | where = IdentifierToken.getWhere(interfaceIds[i], where); | ||
| 580 | } | ||
| 581 | env.resolveExtendsByName(where, this, intf.getName()); | ||
| 582 | } | ||
| 583 | |||
| 584 | // Does the name already exist in an imported package? | ||
| 585 | // See JLS 8.1 for the precise rules. | ||
| 586 | if (!isInnerClass() && !isInsideLocal()) { | ||
| 587 | // Discard package qualification for the import checks. | ||
| 588 | Identifier simpleName = nm.getName(); | ||
| 589 | try { | ||
| 590 | // We want this to throw a ClassNotFound exception | ||
| 591 | Imports imports = toplevelEnv.getImports(); | ||
| 592 | Identifier ID = imports.resolve(env, simpleName); | ||
| 593 | if (ID != getName()) | ||
| 594 | env.error(where, "class.multidef.import", simpleName, ID); | ||
| 595 | } catch (AmbiguousClass e) { | ||
| 596 | // At least one of e.name1 and e.name2 must be different | ||
| 597 | Identifier ID = (e.name1 != getName()) ? e.name1 : e.name2; | ||
| 598 | env.error(where, "class.multidef.import", simpleName, ID); | ||
| 599 | } catch (ClassNotFound e) { | ||
| 600 | // we want this to happen | ||
| 601 | } | ||
| 602 | |||
| 603 | // Make sure that no package with the same fully qualified | ||
| 604 | // name exists. This is required by JLS 7.1. We only need | ||
| 605 | // to perform this check for top level classes -- it isn't | ||
| 606 | // necessary for inner classes. (bug 4101529) | ||
| 607 | // | ||
| 608 | // This change has been backed out because, on WIN32, it | ||
| 609 | // failed to distinguish between java.awt.event and | ||
| 610 | // java.awt.Event when looking for a directory. We will | ||
| 611 | // add this back in later. | ||
| 612 | // | ||
| 613 | // try { | ||
| 614 | // if (env.getPackage(nm).exists()) { | ||
| 615 | // env.error(where, "class.package.conflict", nm); | ||
| 616 | // } | ||
| 617 | // } catch (java.io.IOException ee) { | ||
| 618 | // env.error(where, "io.exception.package", nm); | ||
| 619 | // } | ||
| 620 | |||
| 621 | // Make sure it was defined in the right file | ||
| 622 | if (isPublic()) { | ||
| 623 | checkSourceFile(env, getWhere()); | ||
| 624 | } | ||
| 625 | } | ||
| 626 | |||
| 627 | vset = checkMembers(env, ctx, vset); | ||
| 628 | return vset; | ||
| 629 | } | ||
| 630 | |||
| 631 | private boolean sourceFileChecked = false; | ||
| 632 | |||
| 633 | /** | ||
| 634 | * See if the source file of this class is of the right name. | ||
| 635 | */ | ||
| 636 | public void checkSourceFile(Environment env, long where) { | ||
| 637 | // one error per offending class is sufficient | ||
| 638 | if (sourceFileChecked) return; | ||
| 639 | sourceFileChecked = true; | ||
| 640 | |||
| 641 | String fname = getName().getName() + ".java"; | ||
| 642 | String src = ((ClassFile)getSource()).getName(); | ||
| 643 | if (!src.equals(fname)) { | ||
| 644 | if (isPublic()) { | ||
| 645 | env.error(where, "public.class.file", this, fname); | ||
| 646 | } else { | ||
| 647 | env.error(where, "warn.package.class.file", this, src, fname); | ||
| 648 | } | ||
| 649 | } | ||
| 650 | } | ||
| 651 | |||
| 652 | // Set true if superclass (but not necessarily superinterfaces) have | ||
| 653 | // been checked. If the superclass is still unresolved, then an error | ||
| 654 | // message should have been issued, and we assume that no further | ||
| 655 | // resolution is possible. | ||
| 656 | private boolean supersChecked = false; | ||
| 657 | |||
| 658 | /** | ||
| 659 | * Overrides 'ClassDefinition.getSuperClass'. | ||
| 660 | */ | ||
| 661 | |||
| 662 | public ClassDeclaration getSuperClass(Environment env) { | ||
| 663 | if (tracing) env.dtEnter("SourceClass.getSuperClass: " + this); | ||
| 664 | // Superclass may fail to be set because of error recovery, | ||
| 665 | // so resolve types here only if 'checkSupers' has not yet | ||
| 666 | // completed its checks on the superclass. | ||
| 667 | // QUERY: Can we eliminate the need to resolve superclasses on demand? | ||
| 668 | // See comments in 'checkSupers' and in 'ClassDefinition.getInnerClass'. | ||
| 669 | if (superClass == null && superClassId != null && !supersChecked) { | ||
| 670 | resolveTypeStructure(env); | ||
| 671 | // We used to report an error here if the superclass was not | ||
| 672 | // resolved. Having moved the call to 'checkSupers' from 'basicCheck' | ||
| 673 | // into 'resolveTypeStructure', the errors reported here should have | ||
| 674 | // already been reported. Furthermore, error recovery can null out | ||
| 675 | // the superclass, which would cause a spurious error from the test here. | ||
| 676 | } | ||
| 677 | if (tracing) env.dtExit("SourceClass.getSuperClass: " + this); | ||
| 678 | return superClass; | ||
| 679 | } | ||
| 680 | |||
| 681 | /** | ||
| 682 | * Check that all superclasses and superinterfaces are defined and | ||
| 683 | * well formed. Among other checks, verify that the inheritance | ||
| 684 | * graph is acyclic. Called from 'resolveTypeStructure'. | ||
| 685 | */ | ||
| 686 | |||
| 687 | private void checkSupers(Environment env) throws ClassNotFound { | ||
| 688 | |||
| 689 | // *** DEBUG *** | ||
| 690 | supersCheckStarted = true; | ||
| 691 | |||
| 692 | if (tracing) env.dtEnter("SourceClass.checkSupers: " + this); | ||
| 693 | |||
| 694 | if (isInterface()) { | ||
| 695 | if (isFinal()) { | ||
| 696 | Identifier nm = getClassDeclaration().getName(); | ||
| 697 | env.error(getWhere(), "final.intf", nm); | ||
| 698 | // Interfaces have no superclass. Superinterfaces | ||
| 699 | // are checked below, in code shared with the class case. | ||
| 700 | } | ||
| 701 | } else { | ||
| 702 | // Check superclass. | ||
| 703 | // Call to 'getSuperClass(env)' (note argument) attempts | ||
| 704 | // 'resolveTypeStructure' if superclass has not successfully | ||
| 705 | // been resolved. Since we have just now called 'resolveSupers' | ||
| 706 | // (see our call in 'resolveTypeStructure'), it is not clear | ||
| 707 | // that this can do any good. Why not 'getSuperClass()' here? | ||
| 708 | if (getSuperClass(env) != null) { | ||
| 709 | long where = getWhere(); | ||
| 710 | where = IdentifierToken.getWhere(superClassId, where); | ||
| 711 | try { | ||
| 712 | ClassDefinition def = | ||
| 713 | getSuperClass().getClassDefinition(env); | ||
| 714 | // Resolve superclass and its ancestors. | ||
| 715 | def.resolveTypeStructure(env); | ||
| 716 | // Access to the superclass should be checked relative | ||
| 717 | // to the surrounding context, not as if the reference | ||
| 718 | // appeared within the class body. Changed 'canAccess' | ||
| 719 | // to 'extendsCanAccess' to fix 4087314. | ||
| 720 | if (!extendsCanAccess(env, getSuperClass())) { | ||
| 721 | env.error(where, "cant.access.class", getSuperClass()); | ||
| 722 | // Might it be a better recovery to let the access go through? | ||
| 723 | superClass = null; | ||
| 724 | } else if (def.isFinal()) { | ||
| 725 | env.error(where, "super.is.final", getSuperClass()); | ||
| 726 | // Might it be a better recovery to let the access go through? | ||
| 727 | superClass = null; | ||
| 728 | } else if (def.isInterface()) { | ||
| 729 | env.error(where, "super.is.intf", getSuperClass()); | ||
| 730 | superClass = null; | ||
| 731 | } else if (superClassOf(env, getSuperClass())) { | ||
| 732 | env.error(where, "cyclic.super"); | ||
| 733 | superClass = null; | ||
| 734 | } else { | ||
| 735 | def.noteUsedBy(this, where, env); | ||
| 736 | } | ||
| 737 | if (superClass == null) { | ||
| 738 | def = null; | ||
| 739 | } else { | ||
| 740 | // If we have a valid superclass, check its | ||
| 741 | // supers as well, and so on up to root class. | ||
| 742 | // Call to 'enclosingClassOf' will raise | ||
| 743 | // 'NullPointerException' if 'def' is null, | ||
| 744 | // so omit this check as error recovery. | ||
| 745 | ClassDefinition sup = def; | ||
| 746 | for (;;) { | ||
| 747 | if (enclosingClassOf(sup)) { | ||
| 748 | // Do we need a similar test for | ||
| 749 | // interfaces? See bugid 4038529. | ||
| 750 | env.error(where, "super.is.inner"); | ||
| 751 | superClass = null; | ||
| 752 | break; | ||
| 753 | } | ||
| 754 | // Since we resolved the superclass and its | ||
| 755 | // ancestors above, we should not discover | ||
| 756 | // any unresolved classes on the superclass | ||
| 757 | // chain. It should thus be sufficient to | ||
| 758 | // call 'getSuperClass()' (no argument) here. | ||
| 759 | ClassDeclaration s = sup.getSuperClass(env); | ||
| 760 | if (s == null) { | ||
| 761 | // Superclass not resolved due to error. | ||
| 762 | break; | ||
| 763 | } | ||
| 764 | sup = s.getClassDefinition(env); | ||
| 765 | } | ||
| 766 | } | ||
| 767 | } catch (ClassNotFound e) { | ||
| 768 | // Error is detected in call to 'getClassDefinition'. | ||
| 769 | // The class may actually exist but be ambiguous. | ||
| 770 | // Call env.resolve(e.name) to see if it is. | ||
| 771 | // env.resolve(name) will definitely tell us if the | ||
| 772 | // class is ambiguous, but may not necessarily tell | ||
| 773 | // us if the class is not found. | ||
| 774 | // (part of solution for 4059855) | ||
| 775 | reportError: { | ||
| 776 | try { | ||
| 777 | env.resolve(e.name); | ||
| 778 | } catch (AmbiguousClass ee) { | ||
| 779 | env.error(where, | ||
| 780 | "ambig.class", ee.name1, ee.name2); | ||
| 781 | superClass = null; | ||
| 782 | break reportError; | ||
| 783 | } catch (ClassNotFound ee) { | ||
| 784 | // fall through | ||
| 785 | } | ||
| 786 | env.error(where, "super.not.found", e.name, this); | ||
| 787 | superClass = null; | ||
| 788 | } // The break exits this block | ||
| 789 | } | ||
| 790 | |||
| 791 | } else { | ||
| 792 | // Superclass was null on entry, after call to | ||
| 793 | // 'resolveSupers'. This should normally not happen, | ||
| 794 | // as 'resolveSupers' sets 'superClass' to a non-null | ||
| 795 | // value for all named classes, except for one special | ||
| 796 | // case: 'java.lang.Object', which has no superclass. | ||
| 797 | if (isAnonymous()) { | ||
| 798 | // checker should have filled it in first | ||
| 799 | throw new CompilerError("anonymous super"); | ||
| 800 | } else if (!getName().equals(idJavaLangObject)) { | ||
| 801 | throw new CompilerError("unresolved super"); | ||
| 802 | } | ||
| 803 | } | ||
| 804 | } | ||
| 805 | |||
| 806 | // At this point, if 'superClass' is null due to an error | ||
| 807 | // in the user program, a message should have been issued. | ||
| 808 | supersChecked = true; | ||
| 809 | |||
| 810 | // Check interfaces | ||
| 811 | for (int i = 0 ; i < interfaces.length ; i++) { | ||
| 812 | ClassDeclaration intf = interfaces[i]; | ||
| 813 | long where = getWhere(); | ||
| 814 | if (interfaceIds != null | ||
| 815 | && interfaceIds.length == interfaces.length) { | ||
| 816 | where = IdentifierToken.getWhere(interfaceIds[i], where); | ||
| 817 | } | ||
| 818 | try { | ||
| 819 | ClassDefinition def = intf.getClassDefinition(env); | ||
| 820 | // Resolve superinterface and its ancestors. | ||
| 821 | def.resolveTypeStructure(env); | ||
| 822 | // Check superinterface access in the correct context. | ||
| 823 | // Changed 'canAccess' to 'extendsCanAccess' to fix 4087314. | ||
| 824 | if (!extendsCanAccess(env, intf)) { | ||
| 825 | env.error(where, "cant.access.class", intf); | ||
| 826 | } else if (!intf.getClassDefinition(env).isInterface()) { | ||
| 827 | env.error(where, "not.intf", intf); | ||
| 828 | } else if (isInterface() && implementedBy(env, intf)) { | ||
| 829 | env.error(where, "cyclic.intf", intf); | ||
| 830 | } else { | ||
| 831 | def.noteUsedBy(this, where, env); | ||
| 832 | // Interface is OK, leave it in the interface list. | ||
| 833 | continue; | ||
| 834 | } | ||
| 835 | } catch (ClassNotFound e) { | ||
| 836 | // The interface may actually exist but be ambiguous. | ||
| 837 | // Call env.resolve(e.name) to see if it is. | ||
| 838 | // env.resolve(name) will definitely tell us if the | ||
| 839 | // interface is ambiguous, but may not necessarily tell | ||
| 840 | // us if the interface is not found. | ||
| 841 | // (part of solution for 4059855) | ||
| 842 | reportError2: { | ||
| 843 | try { | ||
| 844 | env.resolve(e.name); | ||
| 845 | } catch (AmbiguousClass ee) { | ||
| 846 | env.error(where, | ||
| 847 | "ambig.class", ee.name1, ee.name2); | ||
| 848 | superClass = null; | ||
| 849 | break reportError2; | ||
| 850 | } catch (ClassNotFound ee) { | ||
| 851 | // fall through | ||
| 852 | } | ||
| 853 | env.error(where, "intf.not.found", e.name, this); | ||
| 854 | superClass = null; | ||
| 855 | } // The break exits this block | ||
| 856 | } | ||
| 857 | // Remove this interface from the list of interfaces | ||
| 858 | // as recovery from an error. | ||
| 859 | ClassDeclaration newInterfaces[] = | ||
| 860 | new ClassDeclaration[interfaces.length - 1]; | ||
| 861 | System.arraycopy(interfaces, 0, newInterfaces, 0, i); | ||
| 862 | System.arraycopy(interfaces, i + 1, newInterfaces, i, | ||
| 863 | newInterfaces.length - i); | ||
| 864 | interfaces = newInterfaces; | ||
| 865 | --i; | ||
| 866 | } | ||
| 867 | if (tracing) env.dtExit("SourceClass.checkSupers: " + this); | ||
| 868 | } | ||
| 869 | |||
| 870 | /** | ||
| 871 | * Check all of the members of this class. | ||
| 872 | * <p> | ||
| 873 | * Inner classes are checked in the following way. Any class which | ||
| 874 | * is immediately contained in a block (anonymous and local classes) | ||
| 875 | * is checked along with its containing method; see the | ||
| 876 | * SourceMember.check() method for more information. Member classes | ||
| 877 | * of this class are checked immediately after this class, unless this | ||
| 878 | * class is insideLocal(), in which case, they are checked with the | ||
| 879 | * rest of the members. | ||
| 880 | */ | ||
| 881 | private Vset checkMembers(Environment env, Context ctx, Vset vset) | ||
| 882 | throws ClassNotFound { | ||
| 883 | |||
| 884 | // bail out if there were any errors | ||
| 885 | if (getError()) { | ||
| 886 | return vset; | ||
| 887 | } | ||
| 888 | |||
| 889 | // Make sure that all of our member classes have been | ||
| 890 | // basicCheck'ed before we check the rest of our members. | ||
| 891 | // If our member classes haven't been basicCheck'ed, then they | ||
| 892 | // may not have <init> methods. It is important that they | ||
| 893 | // have <init> methods so we can process NewInstanceExpressions | ||
| 894 | // correctly. This problem didn't occur before 1.2beta1. | ||
| 895 | // This is a fix for bug 4082816. | ||
| 896 | for (MemberDefinition f = getFirstMember(); | ||
| 897 | f != null; f = f.getNextMember()) { | ||
| 898 | if (f.isInnerClass()) { | ||
| 899 | // System.out.println("Considering " + f + " in " + this); | ||
| 900 | SourceClass cdef = (SourceClass) f.getInnerClass(); | ||
| 901 | if (cdef.isMember()) { | ||
| 902 | cdef.basicCheck(env); | ||
| 903 | } | ||
| 904 | } | ||
| 905 | } | ||
| 906 | |||
| 907 | if (isFinal() && isAbstract()) { | ||
| 908 | env.error(where, "final.abstract", this.getName().getName()); | ||
| 909 | } | ||
| 910 | |||
| 911 | // This class should be abstract if there are any abstract methods | ||
| 912 | // in our parent classes and interfaces which we do not override. | ||
| 913 | // There are odd cases when, even though we cannot access some | ||
| 914 | // abstract method from our superclass, that abstract method can | ||
| 915 | // still force this class to be abstract. See the discussion in | ||
| 916 | // bug id 1240831. | ||
| 917 | if (!isInterface() && !isAbstract() && mustBeAbstract(env)) { | ||
| 918 | // Set the class abstract. | ||
| 919 | modifiers |= M_ABSTRACT; | ||
| 920 | |||
| 921 | // Tell the user which methods force this class to be abstract. | ||
| 922 | |||
| 923 | // First list all of the "unimplementable" abstract methods. | ||
| 924 | Iterator iter = getPermanentlyAbstractMethods(); | ||
| 925 | while (iter.hasNext()) { | ||
| 926 | MemberDefinition method = (MemberDefinition) iter.next(); | ||
| 927 | // We couldn't override this method even if we | ||
| 928 | // wanted to. Try to make the error message | ||
| 929 | // as non-confusing as possible. | ||
| 930 | env.error(where, "abstract.class.cannot.override", | ||
| 931 | getClassDeclaration(), method, | ||
| 932 | method.getDefiningClassDeclaration()); | ||
| 933 | } | ||
| 934 | |||
| 935 | // Now list all of the traditional abstract methods. | ||
| 936 | iter = getMethods(env); | ||
| 937 | while (iter.hasNext()) { | ||
| 938 | // For each method, check if it is abstract. If it is, | ||
| 939 | // output an appropriate error message. | ||
| 940 | MemberDefinition method = (MemberDefinition) iter.next(); | ||
| 941 | if (method.isAbstract()) { | ||
| 942 | env.error(where, "abstract.class", | ||
| 943 | getClassDeclaration(), method, | ||
| 944 | method.getDefiningClassDeclaration()); | ||
| 945 | } | ||
| 946 | } | ||
| 947 | } | ||
| 948 | |||
| 949 | // Check the instance variables in a pre-pass before any constructors. | ||
| 950 | // This lets constructors "in-line" any initializers directly. | ||
| 951 | // It also lets us do some definite assignment checks on variables. | ||
| 952 | Context ctxInit = new Context(ctx); | ||
| 953 | Vset vsInst = vset.copy(); | ||
| 954 | Vset vsClass = vset.copy(); | ||
| 955 | |||
| 956 | // Do definite assignment checking on blank finals. | ||
| 957 | // Other variables do not need such checks. The simple textual | ||
| 958 | // ordering constraints implemented by MemberDefinition.canReach() | ||
| 959 | // are necessary and sufficient for the other variables. | ||
| 960 | // Note that within non-static code, all statics are always | ||
| 961 | // definitely assigned, and vice-versa. | ||
| 962 | for (MemberDefinition f = getFirstMember(); | ||
| 963 | f != null; f = f.getNextMember()) { | ||
| 964 | if (f.isVariable() && f.isBlankFinal()) { | ||
| 965 | // The following allocates a LocalMember object as a proxy | ||
| 966 | // to represent the field. | ||
| 967 | int number = ctxInit.declareFieldNumber(f); | ||
| 968 | if (f.isStatic()) { | ||
| 969 | vsClass = vsClass.addVarUnassigned(number); | ||
| 970 | vsInst = vsInst.addVar(number); | ||
| 971 | } else { | ||
| 972 | vsInst = vsInst.addVarUnassigned(number); | ||
| 973 | vsClass = vsClass.addVar(number); | ||
| 974 | } | ||
| 975 | } | ||
| 976 | } | ||
| 977 | |||
| 978 | // For instance variable checks, use a context with a "this" parameter. | ||
| 979 | Context ctxInst = new Context(ctxInit, this); | ||
| 980 | LocalMember thisArg = getThisArgument(); | ||
| 981 | int thisNumber = ctxInst.declare(env, thisArg); | ||
| 982 | vsInst = vsInst.addVar(thisNumber); | ||
| 983 | |||
| 984 | // Do all the initializers in order, checking the definite | ||
| 985 | // assignment of blank finals. Separate static from non-static. | ||
| 986 | for (MemberDefinition f = getFirstMember(); | ||
| 987 | f != null; f = f.getNextMember()) { | ||
| 988 | try { | ||
| 989 | if (f.isVariable() || f.isInitializer()) { | ||
| 990 | if (f.isStatic()) { | ||
| 991 | vsClass = f.check(env, ctxInit, vsClass); | ||
| 992 | } else { | ||
| 993 | vsInst = f.check(env, ctxInst, vsInst); | ||
| 994 | } | ||
| 995 | } | ||
| 996 | } catch (ClassNotFound ee) { | ||
| 997 | env.error(f.getWhere(), "class.not.found", ee.name, this); | ||
| 998 | } | ||
| 999 | } | ||
| 1000 | |||
| 1001 | checkBlankFinals(env, ctxInit, vsClass, true); | ||
| 1002 | |||
| 1003 | // Check the rest of the field definitions. | ||
| 1004 | // (Note: Re-checking a field is a no-op.) | ||
| 1005 | for (MemberDefinition f = getFirstMember(); | ||
| 1006 | f != null; f = f.getNextMember()) { | ||
| 1007 | try { | ||
| 1008 | if (f.isConstructor()) { | ||
| 1009 | // When checking a constructor, an explicit call to | ||
| 1010 | // 'this(...)' makes all blank finals definitely assigned. | ||
| 1011 | // See 'MethodExpression.checkValue'. | ||
| 1012 | Vset vsCon = f.check(env, ctxInit, vsInst.copy()); | ||
| 1013 | // May issue multiple messages for the same variable!! | ||
| 1014 | checkBlankFinals(env, ctxInit, vsCon, false); | ||
| 1015 | // (drop vsCon here) | ||
| 1016 | } else { | ||
| 1017 | Vset vsFld = f.check(env, ctx, vset.copy()); | ||
| 1018 | // (drop vsFld here) | ||
| 1019 | } | ||
| 1020 | } catch (ClassNotFound ee) { | ||
| 1021 | env.error(f.getWhere(), "class.not.found", ee.name, this); | ||
| 1022 | } | ||
| 1023 | } | ||
| 1024 | |||
| 1025 | // Must mark class as checked before visiting inner classes, | ||
| 1026 | // as they may in turn request checking of the current class | ||
| 1027 | // as an outer class. Fix for bug id 4056774. | ||
| 1028 | getClassDeclaration().setDefinition(this, CS_CHECKED); | ||
| 1029 | |||
| 1030 | // Also check other classes in the same nest. | ||
| 1031 | // All checking of this nest must be finished before any | ||
| 1032 | // of its classes emit bytecode. | ||
| 1033 | // Otherwise, the inner classes might not have a chance to | ||
| 1034 | // add access or class literal fields to the outer class. | ||
| 1035 | for (MemberDefinition f = getFirstMember(); | ||
| 1036 | f != null; f = f.getNextMember()) { | ||
| 1037 | if (f.isInnerClass()) { | ||
| 1038 | SourceClass cdef = (SourceClass) f.getInnerClass(); | ||
| 1039 | if (!cdef.isInsideLocal()) { | ||
| 1040 | cdef.maybeCheck(env); | ||
| 1041 | } | ||
| 1042 | } | ||
| 1043 | } | ||
| 1044 | |||
| 1045 | // Note: Since inner classes cannot set up-level variables, | ||
| 1046 | // the returned vset is always equal to the passed-in vset. | ||
| 1047 | // Still, we'll return it for the sake of regularity. | ||
| 1048 | return vset; | ||
| 1049 | } | ||
| 1050 | |||
| 1051 | /** Make sure all my blank finals exist now. */ | ||
| 1052 | |||
| 1053 | private void checkBlankFinals(Environment env, Context ctxInit, Vset vset, | ||
| 1054 | boolean isStatic) { | ||
| 1055 | for (int i = 0; i < ctxInit.getVarNumber(); i++) { | ||
| 1056 | if (!vset.testVar(i)) { | ||
| 1057 | MemberDefinition ff = ctxInit.getElement(i); | ||
| 1058 | if (ff != null && ff.isBlankFinal() | ||
| 1059 | && ff.isStatic() == isStatic | ||
| 1060 | && ff.getClassDefinition() == this) { | ||
| 1061 | env.error(ff.getWhere(), | ||
| 1062 | "final.var.not.initialized", ff.getName()); | ||
| 1063 | } | ||
| 1064 | } | ||
| 1065 | } | ||
| 1066 | } | ||
| 1067 | |||
| 1068 | /** | ||
| 1069 | * Check this class has its superclass and its interfaces. Also | ||
| 1070 | * force it to have an <init> method (if it doesn't already have one) | ||
| 1071 | * and to have all the abstract methods of its parents. | ||
| 1072 | */ | ||
| 1073 | private boolean basicChecking = false; | ||
| 1074 | private boolean basicCheckDone = false; | ||
| 1075 | protected void basicCheck(Environment env) throws ClassNotFound { | ||
| 1076 | |||
| 1077 | if (tracing) env.dtEnter("SourceClass.basicCheck: " + getName()); | ||
| 1078 | |||
| 1079 | super.basicCheck(env); | ||
| 1080 | |||
| 1081 | if (basicChecking || basicCheckDone) { | ||
| 1082 | if (tracing) env.dtExit("SourceClass.basicCheck: OK " + getName()); | ||
| 1083 | return; | ||
| 1084 | } | ||
| 1085 | |||
| 1086 | if (tracing) env.dtEvent("SourceClass.basicCheck: CHECKING " + getName()); | ||
| 1087 | |||
| 1088 | basicChecking = true; | ||
| 1089 | |||
| 1090 | env = setupEnv(env); | ||
| 1091 | |||
| 1092 | Imports imports = env.getImports(); | ||
| 1093 | if (imports != null) { | ||
| 1094 | imports.resolve(env); | ||
| 1095 | } | ||
| 1096 | |||
| 1097 | resolveTypeStructure(env); | ||
| 1098 | |||
| 1099 | // Check the existence of the superclass and all interfaces. | ||
| 1100 | // Also responsible for breaking inheritance cycles. This call | ||
| 1101 | // has been moved to 'resolveTypeStructure', just after the call | ||
| 1102 | // to 'resolveSupers', as inheritance cycles must be broken before | ||
| 1103 | // resolving types within the members. Fixes 4073739. | ||
| 1104 | // checkSupers(env); | ||
| 1105 | |||
| 1106 | if (!isInterface()) { | ||
| 1107 | |||
| 1108 | // Add implicit <init> method, if necessary. | ||
| 1109 | // QUERY: What keeps us from adding an implicit constructor | ||
| 1110 | // when the user explicitly declares one? Is it truly guaranteed | ||
| 1111 | // that the declaration for such an explicit constructor will have | ||
| 1112 | // been processed by the time we arrive here? In general, 'basicCheck' | ||
| 1113 | // is called very early, prior to the normal member checking phase. | ||
| 1114 | if (!hasConstructor()) { | ||
| 1115 | Node code = new CompoundStatement(getWhere(), new Statement[0]); | ||
| 1116 | Type t = Type.tMethod(Type.tVoid); | ||
| 1117 | |||
| 1118 | // Default constructors inherit the access modifiers of their | ||
| 1119 | // class. For non-inner classes, this follows from JLS 8.6.7, | ||
| 1120 | // as the only possible modifier is 'public'. For the sake of | ||
| 1121 | // robustness in the presence of errors, we ignore any other | ||
| 1122 | // modifiers. For inner classes, the rule needs to be extended | ||
| 1123 | // in some way to account for the possibility of private and | ||
| 1124 | // protected classes. We make the 'obvious' extension, however, | ||
| 1125 | // the inner classes spec is silent on this issue, and a definitive | ||
| 1126 | // resolution is needed. See bugid 4087421. | ||
| 1127 | // WORKAROUND: A private constructor might need an access method, | ||
| 1128 | // but it is not possible to create one due to a restriction in | ||
| 1129 | // the verifier. (This is a known problem -- see 4015397.) | ||
| 1130 | // We therefore do not inherit the 'private' modifier from the class, | ||
| 1131 | // allowing the default constructor to be package private. This | ||
| 1132 | // workaround can be observed via reflection, but is otherwise | ||
| 1133 | // undetectable, as the constructor is always accessible within | ||
| 1134 | // the class in which its containing (private) class appears. | ||
| 1135 | int accessModifiers = getModifiers() & | ||
| 1136 | (isInnerClass() ? (M_PUBLIC | M_PROTECTED) : M_PUBLIC); | ||
| 1137 | env.makeMemberDefinition(env, getWhere(), this, null, | ||
| 1138 | accessModifiers, | ||
| 1139 | t, idInit, null, null, code); | ||
| 1140 | } | ||
| 1141 | } | ||
| 1142 | |||
| 1143 | // Only do the inheritance/override checks if they are turned on. | ||
| 1144 | // The idea here is that they will be done in javac, but not | ||
| 1145 | // in javadoc. See the comment for turnOffChecks(), above. | ||
| 1146 | if (doInheritanceChecks) { | ||
| 1147 | |||
| 1148 | // Verify the compatibility of all inherited method definitions | ||
| 1149 | // by collecting all of our inheritable methods. | ||
| 1150 | collectInheritedMethods(env); | ||
| 1151 | } | ||
| 1152 | |||
| 1153 | basicChecking = false; | ||
| 1154 | basicCheckDone = true; | ||
| 1155 | if (tracing) env.dtExit("SourceClass.basicCheck: " + getName()); | ||
| 1156 | } | ||
| 1157 | |||
| 1158 | /** | ||
| 1159 | * Add a group of methods to this class as miranda methods. | ||
| 1160 | * | ||
| 1161 | * For a definition of Miranda methods, see the comment above the | ||
| 1162 | * method addMirandaMethods() in the file | ||
| 1163 | * sun/tools/java/ClassDeclaration.java | ||
| 1164 | */ | ||
| 1165 | protected void addMirandaMethods(Environment env, | ||
| 1166 | Iterator mirandas) { | ||
| 1167 | |||
| 1168 | while(mirandas.hasNext()) { | ||
| 1169 | MemberDefinition method = | ||
| 1170 | (MemberDefinition)mirandas.next(); | ||
| 1171 | |||
| 1172 | addMember(method); | ||
| 1173 | |||
| 1174 | //System.out.println("adding miranda method " + newMethod + | ||
| 1175 | // " to " + this); | ||
| 1176 | } | ||
| 1177 | } | ||
| 1178 | |||
| 1179 | /** | ||
| 1180 | * <em>After parsing is complete</em>, resolve all names | ||
| 1181 | * except those inside method bodies or initializers. | ||
| 1182 | * In particular, this is the point at which we find out what | ||
| 1183 | * kinds of variables and methods there are in the classes, | ||
| 1184 | * and therefore what is each class's interface to the world. | ||
| 1185 | * <p> | ||
| 1186 | * Also perform certain other transformations, such as inserting | ||
| 1187 | * "this$C" arguments into constructors, and reorganizing structure | ||
| 1188 | * to flatten qualified member names. | ||
| 1189 | * <p> | ||
| 1190 | * Do not perform type-based or name-based consistency checks | ||
| 1191 | * or normalizations (such as default nullary constructors), | ||
| 1192 | * and do not attempt to compile code against this class, | ||
| 1193 | * until after this phase. | ||
| 1194 | */ | ||
| 1195 | |||
| 1196 | private boolean resolving = false; | ||
| 1197 | |||
| 1198 | public void resolveTypeStructure(Environment env) { | ||
| 1199 | |||
| 1200 | if (tracing) | ||
| 1201 | env.dtEnter("SourceClass.resolveTypeStructure: " + getName()); | ||
| 1202 | |||
| 1203 | // Resolve immediately enclosing type, which in turn | ||
| 1204 | // forces resolution of all enclosing type declarations. | ||
| 1205 | ClassDefinition oc = getOuterClass(); | ||
| 1206 | if (oc != null && oc instanceof SourceClass | ||
| 1207 | && !((SourceClass)oc).resolved) { | ||
| 1208 | // Do the outer class first, always. | ||
| 1209 | ((SourceClass)oc).resolveTypeStructure(env); | ||
| 1210 | // (Note: this.resolved is probably true at this point.) | ||
| 1211 | } | ||
| 1212 | |||
| 1213 | // Punt if we've already resolved this class, or are currently | ||
| 1214 | // in the process of doing so. | ||
| 1215 | if (resolved || resolving) { | ||
| 1216 | if (tracing) | ||
| 1217 | env.dtExit("SourceClass.resolveTypeStructure: OK " + getName()); | ||
| 1218 | return; | ||
| 1219 | } | ||
| 1220 | |||
| 1221 | // Previously, 'resolved' was set here, and served to prevent | ||
| 1222 | // duplicate resolutions here as well as its function in | ||
| 1223 | // 'ClassDefinition.addMember'. Now, 'resolving' serves the | ||
| 1224 | // former purpose, distinct from that of 'resolved'. | ||
| 1225 | resolving = true; | ||
| 1226 | |||
| 1227 | if (tracing) | ||
| 1228 | env.dtEvent("SourceClass.resolveTypeStructure: RESOLVING " + getName()); | ||
| 1229 | |||
| 1230 | env = setupEnv(env); | ||
| 1231 | |||
| 1232 | // Resolve superclass names to class declarations | ||
| 1233 | // for the immediate superclass and superinterfaces. | ||
| 1234 | resolveSupers(env); | ||
| 1235 | |||
| 1236 | // Check all ancestor superclasses for various | ||
| 1237 | // errors, verifying definition of all superclasses | ||
| 1238 | // and superinterfaces. Also breaks inheritance cycles. | ||
| 1239 | // Calls 'resolveTypeStructure' recursively for ancestors | ||
| 1240 | // This call used to appear in 'basicCheck', but was not | ||
| 1241 | // performed early enough. Most of the compiler will barf | ||
| 1242 | // on inheritance cycles! | ||
| 1243 | try { | ||
| 1244 | checkSupers(env); | ||
| 1245 | } catch (ClassNotFound ee) { | ||
| 1246 | // Undefined classes should be reported by 'checkSupers'. | ||
| 1247 | env.error(where, "class.not.found", ee.name, this); | ||
| 1248 | } | ||
| 1249 | |||
| 1250 | for (MemberDefinition | ||
| 1251 | f = getFirstMember() ; f != null ; f = f.getNextMember()) { | ||
| 1252 | if (f instanceof SourceMember) | ||
| 1253 | ((SourceMember)f).resolveTypeStructure(env); | ||
| 1254 | } | ||
| 1255 | |||
| 1256 | resolving = false; | ||
| 1257 | |||
| 1258 | // Mark class as resolved. If new members are subsequently | ||
| 1259 | // added to the class, they will be resolved at that time. | ||
| 1260 | // See 'ClassDefinition.addMember'. Previously, this variable was | ||
| 1261 | // set prior to the calls to 'checkSupers' and 'resolveTypeStructure' | ||
| 1262 | // (which may engender further calls to 'checkSupers'). This could | ||
| 1263 | // lead to duplicate resolution of implicit constructors, as the call to | ||
| 1264 | // 'basicCheck' from 'checkSupers' could add the constructor while | ||
| 1265 | // its class is marked resolved, and thus would resolve the constructor, | ||
| 1266 | // believing it to be a "late addition". It would then be resolved | ||
| 1267 | // redundantly during the normal traversal of the members, which | ||
| 1268 | // immediately follows in the code above. | ||
| 1269 | resolved = true; | ||
| 1270 | |||
| 1271 | // Now we have enough information to detect method repeats. | ||
| 1272 | for (MemberDefinition | ||
| 1273 | f = getFirstMember() ; f != null ; f = f.getNextMember()) { | ||
| 1274 | if (f.isInitializer()) continue; | ||
| 1275 | if (!f.isMethod()) continue; | ||
| 1276 | for (MemberDefinition f2 = f; (f2 = f2.getNextMatch()) != null; ) { | ||
| 1277 | if (!f2.isMethod()) continue; | ||
| 1278 | if (f.getType().equals(f2.getType())) { | ||
| 1279 | env.error(f.getWhere(), "meth.multidef", f); | ||
| 1280 | continue; | ||
| 1281 | } | ||
| 1282 | if (f.getType().equalArguments(f2.getType())) { | ||
| 1283 | env.error(f.getWhere(), "meth.redef.rettype", f, f2); | ||
| 1284 | continue; | ||
| 1285 | } | ||
| 1286 | } | ||
| 1287 | } | ||
| 1288 | if (tracing) | ||
| 1289 | env.dtExit("SourceClass.resolveTypeStructure: " + getName()); | ||
| 1290 | } | ||
| 1291 | |||
| 1292 | protected void resolveSupers(Environment env) { | ||
| 1293 | if (tracing) | ||
| 1294 | env.dtEnter("SourceClass.resolveSupers: " + this); | ||
| 1295 | // Find the super class | ||
| 1296 | if (superClassId != null && superClass == null) { | ||
| 1297 | superClass = resolveSuper(env, superClassId); | ||
| 1298 | // Special-case java.lang.Object here (not in the parser). | ||
| 1299 | // In all other cases, if we have a valid 'superClassId', | ||
| 1300 | // we return with a valid and non-null 'superClass' value. | ||
| 1301 | if (superClass == getClassDeclaration() | ||
| 1302 | && getName().equals(idJavaLangObject)) { | ||
| 1303 | superClass = null; | ||
| 1304 | superClassId = null; | ||
| 1305 | } | ||
| 1306 | } | ||
| 1307 | // Find interfaces | ||
| 1308 | if (interfaceIds != null && interfaces == null) { | ||
| 1309 | interfaces = new ClassDeclaration[interfaceIds.length]; | ||
| 1310 | for (int i = 0 ; i < interfaces.length ; i++) { | ||
| 1311 | interfaces[i] = resolveSuper(env, interfaceIds[i]); | ||
| 1312 | for (int j = 0; j < i; j++) { | ||
| 1313 | if (interfaces[i] == interfaces[j]) { | ||
| 1314 | Identifier id = interfaceIds[i].getName(); | ||
| 1315 | long where = interfaceIds[j].getWhere(); | ||
| 1316 | env.error(where, "intf.repeated", id); | ||
| 1317 | } | ||
| 1318 | } | ||
| 1319 | } | ||
| 1320 | } | ||
| 1321 | if (tracing) | ||
| 1322 | env.dtExit("SourceClass.resolveSupers: " + this); | ||
| 1323 | } | ||
| 1324 | |||
| 1325 | private ClassDeclaration resolveSuper(Environment env, IdentifierToken t) { | ||
| 1326 | Identifier name = t.getName(); | ||
| 1327 | if (tracing) | ||
| 1328 | env.dtEnter("SourceClass.resolveSuper: " + name); | ||
| 1329 | if (isInnerClass()) | ||
| 1330 | name = outerClass.resolveName(env, name); | ||
| 1331 | else | ||
| 1332 | name = env.resolveName(name); | ||
| 1333 | ClassDeclaration result = env.getClassDeclaration(name); | ||
| 1334 | // Result is never null, as a new 'ClassDeclaration' is | ||
| 1335 | // created if one with the given name does not exist. | ||
| 1336 | if (tracing) env.dtExit("SourceClass.resolveSuper: " + name); | ||
| 1337 | return result; | ||
| 1338 | } | ||
| 1339 | |||
| 1340 | /** | ||
| 1341 | * During the type-checking of an outer method body or initializer, | ||
| 1342 | * this routine is called to check a local class body | ||
| 1343 | * in the proper context. | ||
| 1344 | * @param sup the named super class or interface (if anonymous) | ||
| 1345 | * @param args the actual arguments (if anonymous) | ||
| 1346 | */ | ||
| 1347 | public Vset checkLocalClass(Environment env, Context ctx, Vset vset, | ||
| 1348 | ClassDefinition sup, | ||
| 1349 | Expression args[], Type argTypes[] | ||
| 1350 | ) throws ClassNotFound { | ||
| 1351 | env = setupEnv(env); | ||
| 1352 | |||
| 1353 | if ((sup != null) != isAnonymous()) { | ||
| 1354 | throw new CompilerError("resolveAnonymousStructure"); | ||
| 1355 | } | ||
| 1356 | if (isAnonymous()) { | ||
| 1357 | resolveAnonymousStructure(env, sup, args, argTypes); | ||
| 1358 | } | ||
| 1359 | |||
| 1360 | // Run the checks in the lexical context from the outer class. | ||
| 1361 | vset = checkInternal(env, ctx, vset); | ||
| 1362 | |||
| 1363 | // This is now done by 'checkInternal' via its call to 'checkMembers'. | ||
| 1364 | // getClassDeclaration().setDefinition(this, CS_CHECKED); | ||
| 1365 | |||
| 1366 | return vset; | ||
| 1367 | } | ||
| 1368 | |||
| 1369 | /** | ||
| 1370 | * As with checkLocalClass, run the inline phase for a local class. | ||
| 1371 | */ | ||
| 1372 | public void inlineLocalClass(Environment env) { | ||
| 1373 | for (MemberDefinition | ||
| 1374 | f = getFirstMember(); f != null; f = f.getNextMember()) { | ||
| 1375 | if ((f.isVariable() || f.isInitializer()) && !f.isStatic()) { | ||
| 1376 | continue; // inlined inside of constructors only | ||
| 1377 | } | ||
| 1378 | try { | ||
| 1379 | ((SourceMember)f).inline(env); | ||
| 1380 | } catch (ClassNotFound ee) { | ||
| 1381 | env.error(f.getWhere(), "class.not.found", ee.name, this); | ||
| 1382 | } | ||
| 1383 | } | ||
| 1384 | if (getReferencesFrozen() != null && !inlinedLocalClass) { | ||
| 1385 | inlinedLocalClass = true; | ||
| 1386 | // add more constructor arguments for uplevel references | ||
| 1387 | for (MemberDefinition | ||
| 1388 | f = getFirstMember(); f != null; f = f.getNextMember()) { | ||
| 1389 | if (f.isConstructor()) { | ||
| 1390 | //((SourceMember)f).addUplevelArguments(false); | ||
| 1391 | ((SourceMember)f).addUplevelArguments(); | ||
| 1392 | } | ||
| 1393 | } | ||
| 1394 | } | ||
| 1395 | } | ||
| 1396 | private boolean inlinedLocalClass = false; | ||
| 1397 | |||
| 1398 | /** | ||
| 1399 | * Check a class which is inside a local class, but is not itself local. | ||
| 1400 | */ | ||
| 1401 | public Vset checkInsideClass(Environment env, Context ctx, Vset vset) | ||
| 1402 | throws ClassNotFound { | ||
| 1403 | if (!isInsideLocal() || isLocal()) { | ||
| 1404 | throw new CompilerError("checkInsideClass"); | ||
| 1405 | } | ||
| 1406 | return checkInternal(env, ctx, vset); | ||
| 1407 | } | ||
| 1408 | |||
| 1409 | /** | ||
| 1410 | * Just before checking an anonymous class, decide its true | ||
| 1411 | * inheritance, and build its (sole, implicit) constructor. | ||
| 1412 | */ | ||
| 1413 | private void resolveAnonymousStructure(Environment env, | ||
| 1414 | ClassDefinition sup, | ||
| 1415 | Expression args[], Type argTypes[] | ||
| 1416 | ) throws ClassNotFound { | ||
| 1417 | |||
| 1418 | if (tracing) env.dtEvent("SourceClass.resolveAnonymousStructure: " + | ||
| 1419 | this + ", super " + sup); | ||
| 1420 | |||
| 1421 | // Decide now on the superclass. | ||
| 1422 | |||
| 1423 | // This check has been removed as part of the fix for 4055017. | ||
| 1424 | // In the anonymous class created to hold the 'class$' method | ||
| 1425 | // of an interface, 'superClassId' refers to 'java.lang.Object'. | ||
| 1426 | /*---------------------* | ||
| 1427 | if (!(superClass == null && superClassId.getName() == idNull)) { | ||
| 1428 | throw new CompilerError("superclass "+superClass); | ||
| 1429 | } | ||
| 1430 | *---------------------*/ | ||
| 1431 | |||
| 1432 | if (sup.isInterface()) { | ||
| 1433 | // allow an interface in the "super class" position | ||
| 1434 | int ni = (interfaces == null) ? 0 : interfaces.length; | ||
| 1435 | ClassDeclaration i1[] = new ClassDeclaration[1+ni]; | ||
| 1436 | if (ni > 0) { | ||
| 1437 | System.arraycopy(interfaces, 0, i1, 1, ni); | ||
| 1438 | if (interfaceIds != null && interfaceIds.length == ni) { | ||
| 1439 | IdentifierToken id1[] = new IdentifierToken[1+ni]; | ||
| 1440 | System.arraycopy(interfaceIds, 0, id1, 1, ni); | ||
| 1441 | id1[0] = new IdentifierToken(sup.getName()); | ||
| 1442 | } | ||
| 1443 | } | ||
| 1444 | i1[0] = sup.getClassDeclaration(); | ||
| 1445 | interfaces = i1; | ||
| 1446 | |||
| 1447 | sup = toplevelEnv.getClassDefinition(idJavaLangObject); | ||
| 1448 | } | ||
| 1449 | superClass = sup.getClassDeclaration(); | ||
| 1450 | |||
| 1451 | if (hasConstructor()) { | ||
| 1452 | throw new CompilerError("anonymous constructor"); | ||
| 1453 | } | ||
| 1454 | |||
| 1455 | // Synthesize an appropriate constructor. | ||
| 1456 | Type t = Type.tMethod(Type.tVoid, argTypes); | ||
| 1457 | IdentifierToken names[] = new IdentifierToken[argTypes.length]; | ||
| 1458 | for (int i = 0; i < names.length; i++) { | ||
| 1459 | names[i] = new IdentifierToken(args[i].getWhere(), | ||
| 1460 | Identifier.lookup("$"+i)); | ||
| 1461 | } | ||
| 1462 | int outerArg = (sup.isTopLevel() || sup.isLocal()) ? 0 : 1; | ||
| 1463 | Expression superArgs[] = new Expression[-outerArg + args.length]; | ||
| 1464 | for (int i = outerArg ; i < args.length ; i++) { | ||
| 1465 | superArgs[-outerArg + i] = new IdentifierExpression(names[i]); | ||
| 1466 | } | ||
| 1467 | long where = getWhere(); | ||
| 1468 | Expression superExp; | ||
| 1469 | if (outerArg == 0) { | ||
| 1470 | superExp = new SuperExpression(where); | ||
| 1471 | } else { | ||
| 1472 | superExp = new SuperExpression(where, | ||
| 1473 | new IdentifierExpression(names[0])); | ||
| 1474 | } | ||
| 1475 | Expression superCall = new MethodExpression(where, | ||
| 1476 | superExp, idInit, | ||
| 1477 | superArgs); | ||
| 1478 | Statement body[] = { new ExpressionStatement(where, superCall) }; | ||
| 1479 | Node code = new CompoundStatement(where, body); | ||
| 1480 | int mod = M_SYNTHETIC; // ISSUE: make M_PRIVATE, with wrapper? | ||
| 1481 | env.makeMemberDefinition(env, where, this, null, | ||
| 1482 | mod, t, idInit, names, null, code); | ||
| 1483 | } | ||
| 1484 | |||
| 1485 | /** | ||
| 1486 | * Convert class modifiers to a string for diagnostic purposes. | ||
| 1487 | * Accepts modifiers applicable to inner classes and that appear | ||
| 1488 | * in the InnerClasses attribute only, as well as those that may | ||
| 1489 | * appear in the class modifier proper. | ||
| 1490 | */ | ||
| 1491 | |||
| 1492 | private static int classModifierBits[] = | ||
| 1493 | { ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL, | ||
| 1494 | ACC_INTERFACE, ACC_ABSTRACT, ACC_SUPER, M_ANONYMOUS, M_LOCAL, | ||
| 1495 | M_STRICTFP, ACC_STRICT}; | ||
| 1496 | |||
| 1497 | private static String classModifierNames[] = | ||
| 1498 | { "PUBLIC", "PRIVATE", "PROTECTED", "STATIC", "FINAL", | ||
| 1499 | "INTERFACE", "ABSTRACT", "SUPER", "ANONYMOUS", "LOCAL", | ||
| 1500 | "STRICTFP", "STRICT"}; | ||
| 1501 | |||
| 1502 | static String classModifierString(int mods) { | ||
| 1503 | String s = ""; | ||
| 1504 | for (int i = 0; i < classModifierBits.length; i++) { | ||
| 1505 | if ((mods & classModifierBits[i]) != 0) { | ||
| 1506 | s = s + " " + classModifierNames[i]; | ||
| 1507 | mods &= ~classModifierBits[i]; | ||
| 1508 | } | ||
| 1509 | } | ||
| 1510 | if (mods != 0) { | ||
| 1511 | s = s + " ILLEGAL:" + Integer.toHexString(mods); | ||
| 1512 | } | ||
| 1513 | return s; | ||
| 1514 | } | ||
| 1515 | |||
| 1516 | /** | ||
| 1517 | * Find or create an access method for a private member, | ||
| 1518 | * or return null if this is not possible. | ||
| 1519 | */ | ||
| 1520 | public MemberDefinition getAccessMember(Environment env, Context ctx, | ||
| 1521 | MemberDefinition field, boolean isSuper) { | ||
| 1522 | return getAccessMember(env, ctx, field, false, isSuper); | ||
| 1523 | } | ||
| 1524 | |||
| 1525 | public MemberDefinition getUpdateMember(Environment env, Context ctx, | ||
| 1526 | MemberDefinition field, boolean isSuper) { | ||
| 1527 | if (!field.isVariable()) { | ||
| 1528 | throw new CompilerError("method"); | ||
| 1529 | } | ||
| 1530 | return getAccessMember(env, ctx, field, true, isSuper); | ||
| 1531 | } | ||
| 1532 | |||
| 1533 | private MemberDefinition getAccessMember(Environment env, Context ctx, | ||
| 1534 | MemberDefinition field, | ||
| 1535 | boolean isUpdate, | ||
| 1536 | boolean isSuper) { | ||
| 1537 | |||
| 1538 | // The 'isSuper' argument is really only meaningful when the | ||
| 1539 | // target member is a method, in which case an 'invokespecial' | ||
| 1540 | // is needed. For fields, 'getfield' and 'putfield' instructions | ||
| 1541 | // are generated in either case, and 'isSuper' currently plays | ||
| 1542 | // no essential role. Nonetheless, we maintain the distinction | ||
| 1543 | // consistently for the time being. | ||
| 1544 | |||
| 1545 | boolean isStatic = field.isStatic(); | ||
| 1546 | boolean isMethod = field.isMethod(); | ||
| 1547 | |||
| 1548 | // Find pre-existing access method. | ||
| 1549 | // In the case of a field access method, we only look for the getter. | ||
| 1550 | // A getter is always created whenever a setter is. | ||
| 1551 | // QUERY: Why doesn't the 'MemberDefinition' object for the field | ||
| 1552 | // itself just have fields for its getter and setter? | ||
| 1553 | MemberDefinition af; | ||
| 1554 | for (af = getFirstMember(); af != null; af = af.getNextMember()) { | ||
| 1555 | if (af.getAccessMethodTarget() == field) { | ||
| 1556 | if (isMethod && af.isSuperAccessMethod() == isSuper) { | ||
| 1557 | break; | ||
| 1558 | } | ||
| 1559 | // Distinguish the getter and the setter by the number of | ||
| 1560 | // arguments. | ||
| 1561 | int nargs = af.getType().getArgumentTypes().length; | ||
| 1562 | // This was (nargs == (isStatic ? 0 : 1) + (isUpdate ? 1 : 0)) | ||
| 1563 | // in order to find a setter as well as a getter. This caused | ||
| 1564 | // allocation of multiple getters. | ||
| 1565 | if (nargs == (isStatic ? 0 : 1)) { | ||
| 1566 | break; | ||
| 1567 | } | ||
| 1568 | } | ||
| 1569 | } | ||
| 1570 | |||
| 1571 | if (af != null) { | ||
| 1572 | if (!isUpdate) { | ||
| 1573 | return af; | ||
| 1574 | } else { | ||
| 1575 | MemberDefinition uf = af.getAccessUpdateMember(); | ||
| 1576 | if (uf != null) { | ||
| 1577 | return uf; | ||
| 1578 | } | ||
| 1579 | } | ||
| 1580 | } else if (isUpdate) { | ||
| 1581 | // must find or create the getter before creating the setter | ||
| 1582 | af = getAccessMember(env, ctx, field, false, isSuper); | ||
| 1583 | } | ||
| 1584 | |||
| 1585 | // If we arrive here, we are creating a new access member. | ||
| 1586 | |||
| 1587 | Identifier anm; | ||
| 1588 | Type dummyType = null; | ||
| 1589 | |||
| 1590 | if (field.isConstructor()) { | ||
| 1591 | // For a constructor, we use the same name as for all | ||
| 1592 | // constructors ("<init>"), but add a distinguishing | ||
| 1593 | // argument of an otherwise unused "dummy" type. | ||
| 1594 | anm = idInit; | ||
| 1595 | // Get the dummy class, creating it if necessary. | ||
| 1596 | SourceClass outerMostClass = (SourceClass)getTopClass(); | ||
| 1597 | dummyType = outerMostClass.dummyArgumentType; | ||
| 1598 | if (dummyType == null) { | ||
| 1599 | // Create dummy class. | ||
| 1600 | IdentifierToken sup = | ||
| 1601 | new IdentifierToken(0, idJavaLangObject); | ||
| 1602 | IdentifierToken interfaces[] = {}; | ||
| 1603 | IdentifierToken t = new IdentifierToken(0, idNull); | ||
| 1604 | int mod = M_ANONYMOUS | M_STATIC | M_SYNTHETIC; | ||
| 1605 | // If an interface has a public inner class, the dummy class for | ||
| 1606 | // the constructor must always be accessible. Fix for 4221648. | ||
| 1607 | if (outerMostClass.isInterface()) { | ||
| 1608 | mod |= M_PUBLIC; | ||
| 1609 | } | ||
| 1610 | ClassDefinition dummyClass = | ||
| 1611 | toplevelEnv.makeClassDefinition(toplevelEnv, | ||
| 1612 | 0, t, null, mod, | ||
| 1613 | sup, interfaces, | ||
| 1614 | outerMostClass); | ||
| 1615 | // Check the class. | ||
| 1616 | // It is likely that a full check is not really necessary, | ||
| 1617 | // but it is essential that the class be marked as parsed. | ||
| 1618 | dummyClass.getClassDeclaration().setDefinition(dummyClass, CS_PARSED); | ||
| 1619 | Expression argsX[] = {}; | ||
| 1620 | Type argTypesX[] = {}; | ||
| 1621 | try { | ||
| 1622 | ClassDefinition supcls = | ||
| 1623 | toplevelEnv.getClassDefinition(idJavaLangObject); | ||
| 1624 | dummyClass.checkLocalClass(toplevelEnv, null, | ||
| 1625 | new Vset(), supcls, argsX, argTypesX); | ||
| 1626 | } catch (ClassNotFound ee) {}; | ||
| 1627 | // Get class type. | ||
| 1628 | dummyType = dummyClass.getType(); | ||
| 1629 | outerMostClass.dummyArgumentType = dummyType; | ||
| 1630 | } | ||
| 1631 | } else { | ||
| 1632 | // Otherwise, we use the name "access$N", for the | ||
| 1633 | // smallest value of N >= 0 yielding an unused name. | ||
| 1634 | for (int i = 0; ; i++) { | ||
| 1635 | anm = Identifier.lookup(prefixAccess + i); | ||
| 1636 | if (getFirstMatch(anm) == null) { | ||
| 1637 | break; | ||
| 1638 | } | ||
| 1639 | } | ||
| 1640 | } | ||
| 1641 | |||
| 1642 | Type argTypes[]; | ||
| 1643 | Type t = field.getType(); | ||
| 1644 | |||
| 1645 | if (isStatic) { | ||
| 1646 | if (!isMethod) { | ||
| 1647 | if (!isUpdate) { | ||
| 1648 | Type at[] = { }; | ||
| 1649 | argTypes = at; | ||
| 1650 | t = Type.tMethod(t); // nullary getter | ||
| 1651 | } else { | ||
| 1652 | Type at[] = { t }; | ||
| 1653 | argTypes = at; | ||
| 1654 | t = Type.tMethod(Type.tVoid, argTypes); // unary setter | ||
| 1655 | } | ||
| 1656 | } else { | ||
| 1657 | // Since constructors are never static, we don't | ||
| 1658 | // have to worry about a dummy argument here. | ||
| 1659 | argTypes = t.getArgumentTypes(); | ||
| 1660 | } | ||
| 1661 | } else { | ||
| 1662 | // All access methods for non-static members get an explicit | ||
| 1663 | // 'this' pointer as an extra argument, as the access methods | ||
| 1664 | // themselves must be static. EXCEPTION: Access methods for | ||
| 1665 | // constructors are non-static. | ||
| 1666 | Type classType = this.getType(); | ||
| 1667 | if (!isMethod) { | ||
| 1668 | if (!isUpdate) { | ||
| 1669 | Type at[] = { classType }; | ||
| 1670 | argTypes = at; | ||
| 1671 | t = Type.tMethod(t, argTypes); // nullary getter | ||
| 1672 | } else { | ||
| 1673 | Type at[] = { classType, t }; | ||
| 1674 | argTypes = at; | ||
| 1675 | t = Type.tMethod(Type.tVoid, argTypes); // unary setter | ||
| 1676 | } | ||
| 1677 | } else { | ||
| 1678 | // Target is a method, possibly a constructor. | ||
| 1679 | Type at[] = t.getArgumentTypes(); | ||
| 1680 | int nargs = at.length; | ||
| 1681 | if (field.isConstructor()) { | ||
| 1682 | // Access method is a constructor. | ||
| 1683 | // Requires a dummy argument. | ||
| 1684 | MemberDefinition outerThisArg = | ||
| 1685 | ((SourceMember)field).getOuterThisArg(); | ||
| 1686 | if (outerThisArg != null) { | ||
| 1687 | // Outer instance link must be the first argument. | ||
| 1688 | // The following is a sanity check that will catch | ||
| 1689 | // most cases in which in this requirement is violated. | ||
| 1690 | if (at[0] != outerThisArg.getType()) { | ||
| 1691 | throw new CompilerError("misplaced outer this"); | ||
| 1692 | } | ||
| 1693 | // Strip outer 'this' argument. | ||
| 1694 | // It will be added back when the access method is checked. | ||
| 1695 | argTypes = new Type[nargs]; | ||
| 1696 | argTypes[0] = dummyType; | ||
| 1697 | for (int i = 1; i < nargs; i++) { | ||
| 1698 | argTypes[i] = at[i]; | ||
| 1699 | } | ||
| 1700 | } else { | ||
| 1701 | // There is no outer instance. | ||
| 1702 | argTypes = new Type[nargs+1]; | ||
| 1703 | argTypes[0] = dummyType; | ||
| 1704 | for (int i = 0; i < nargs; i++) { | ||
| 1705 | argTypes[i+1] = at[i]; | ||
| 1706 | } | ||
| 1707 | } | ||
| 1708 | } else { | ||
| 1709 | // Access method is static. | ||
| 1710 | // Requires an explicit 'this' argument. | ||
| 1711 | argTypes = new Type[nargs+1]; | ||
| 1712 | argTypes[0] = classType; | ||
| 1713 | for (int i = 0; i < nargs; i++) { | ||
| 1714 | argTypes[i+1] = at[i]; | ||
| 1715 | } | ||
| 1716 | } | ||
| 1717 | t = Type.tMethod(t.getReturnType(), argTypes); | ||
| 1718 | } | ||
| 1719 | } | ||
| 1720 | |||
| 1721 | int nlen = argTypes.length; | ||
| 1722 | long where = field.getWhere(); | ||
| 1723 | IdentifierToken names[] = new IdentifierToken[nlen]; | ||
| 1724 | for (int i = 0; i < nlen; i++) { | ||
| 1725 | names[i] = new IdentifierToken(where, Identifier.lookup("$"+i)); | ||
| 1726 | } | ||
| 1727 | |||
| 1728 | Expression access = null; | ||
| 1729 | Expression thisArg = null; | ||
| 1730 | Expression args[] = null; | ||
| 1731 | |||
| 1732 | if (isStatic) { | ||
| 1733 | args = new Expression[nlen]; | ||
| 1734 | for (int i = 0 ; i < nlen ; i++) { | ||
| 1735 | args[i] = new IdentifierExpression(names[i]); | ||
| 1736 | } | ||
| 1737 | } else { | ||
| 1738 | if (field.isConstructor()) { | ||
| 1739 | // Constructor access method is non-static, so | ||
| 1740 | // 'this' works normally. | ||
| 1741 | thisArg = new ThisExpression(where); | ||
| 1742 | // Remove dummy argument, as it is not | ||
| 1743 | // passed to the target method. | ||
| 1744 | args = new Expression[nlen-1]; | ||
| 1745 | for (int i = 1 ; i < nlen ; i++) { | ||
| 1746 | args[i-1] = new IdentifierExpression(names[i]); | ||
| 1747 | } | ||
| 1748 | } else { | ||
| 1749 | // Non-constructor access method is static, so | ||
| 1750 | // we use the first argument as 'this'. | ||
| 1751 | thisArg = new IdentifierExpression(names[0]); | ||
| 1752 | // Remove first argument. | ||
| 1753 | args = new Expression[nlen-1]; | ||
| 1754 | for (int i = 1 ; i < nlen ; i++) { | ||
| 1755 | args[i-1] = new IdentifierExpression(names[i]); | ||
| 1756 | } | ||
| 1757 | } | ||
| 1758 | access = thisArg; | ||
| 1759 | } | ||
| 1760 | |||
| 1761 | if (!isMethod) { | ||
| 1762 | access = new FieldExpression(where, access, field); | ||
| 1763 | if (isUpdate) { | ||
| 1764 | access = new AssignExpression(where, access, args[0]); | ||
| 1765 | } | ||
| 1766 | } else { | ||
| 1767 | // If true, 'isSuper' forces a non-virtual call. | ||
| 1768 | access = new MethodExpression(where, access, field, args, isSuper); | ||
| 1769 | } | ||
| 1770 | |||
| 1771 | Statement code; | ||
| 1772 | if (t.getReturnType().isType(TC_VOID)) { | ||
| 1773 | code = new ExpressionStatement(where, access); | ||
| 1774 | } else { | ||
| 1775 | code = new ReturnStatement(where, access); | ||
| 1776 | } | ||
| 1777 | Statement body[] = { code }; | ||
| 1778 | code = new CompoundStatement(where, body); | ||
| 1779 | |||
| 1780 | // Access methods are now static (constructors excepted), and no longer final. | ||
| 1781 | // This change was mandated by the interaction of the access method | ||
| 1782 | // naming conventions and the restriction against overriding final | ||
| 1783 | // methods. | ||
| 1784 | int mod = M_SYNTHETIC; | ||
| 1785 | if (!field.isConstructor()) { | ||
| 1786 | mod |= M_STATIC; | ||
| 1787 | } | ||
| 1788 | |||
| 1789 | // Create the synthetic method within the class in which the referenced | ||
| 1790 | // private member appears. The 'env' argument to 'makeMemberDefinition' | ||
| 1791 | // is suspect because it represents the environment at the point at | ||
| 1792 | // which a reference takes place, while it should represent the | ||
| 1793 | // environment in which the definition of the synthetic method appears. | ||
| 1794 | // We get away with this because 'env' is used only to access globals | ||
| 1795 | // such as 'Environment.error', and also as an argument to | ||
| 1796 | // 'resolveTypeStructure', which immediately discards it using | ||
| 1797 | // 'setupEnv'. Apparently, the current definition of 'setupEnv' | ||
| 1798 | // represents a design change that has not been thoroughly propagated. | ||
| 1799 | // An access method is declared with same list of exceptions as its | ||
| 1800 | // target. As the exceptions are simply listed by name, the correctness | ||
| 1801 | // of this approach requires that the access method be checked | ||
| 1802 | // (name-resolved) in the same context as its target method This | ||
| 1803 | // should always be the case. | ||
| 1804 | SourceMember newf = (SourceMember) | ||
| 1805 | env.makeMemberDefinition(env, where, this, | ||
| 1806 | null, mod, t, anm, names, | ||
| 1807 | field.getExceptionIds(), code); | ||
| 1808 | // Just to be safe, copy over the name-resolved exceptions from the | ||
| 1809 | // target so that the context in which the access method is checked | ||
| 1810 | // doesn't matter. | ||
| 1811 | newf.setExceptions(field.getExceptions(env)); | ||
| 1812 | |||
| 1813 | newf.setAccessMethodTarget(field); | ||
| 1814 | if (isUpdate) { | ||
| 1815 | af.setAccessUpdateMember(newf); | ||
| 1816 | } | ||
| 1817 | newf.setIsSuperAccessMethod(isSuper); | ||
| 1818 | |||
| 1819 | // The call to 'check' is not needed, as the access method will be | ||
| 1820 | // checked by the containing class after it is added. This is the | ||
| 1821 | // idiom followed in the implementation of class literals. (See | ||
| 1822 | // 'FieldExpression.java'.) In any case, the context is wrong in the | ||
| 1823 | // call below. The access method must be checked in the context in | ||
| 1824 | // which it is declared, i.e., the class containing the referenced | ||
| 1825 | // private member, not the (inner) class in which the original member | ||
| 1826 | // reference occurs. | ||
| 1827 | // | ||
| 1828 | // try { | ||
| 1829 | // newf.check(env, ctx, new Vset()); | ||
| 1830 | // } catch (ClassNotFound ee) { | ||
| 1831 | // env.error(where, "class.not.found", ee.name, this); | ||
| 1832 | // } | ||
| 1833 | |||
| 1834 | // The comment above is inaccurate. While it is often the case | ||
| 1835 | // that the containing class will check the access method, this is | ||
| 1836 | // by no means guaranteed. In fact, an access method may be added | ||
| 1837 | // after the checking of its class is complete. In this case, however, | ||
| 1838 | // the context in which the class was checked will have been saved in | ||
| 1839 | // the class definition object (by the fix for 4095716), allowing us | ||
| 1840 | // to check the field now, and in the correct context. | ||
| 1841 | // This fixes bug 4098093. | ||
| 1842 | |||
| 1843 | Context checkContext = newf.getClassDefinition().getClassContext(); | ||
| 1844 | if (checkContext != null) { | ||
| 1845 | //System.out.println("checking late addition: " + this); | ||
| 1846 | try { | ||
| 1847 | newf.check(env, checkContext, new Vset()); | ||
| 1848 | } catch (ClassNotFound ee) { | ||
| 1849 | env.error(where, "class.not.found", ee.name, this); | ||
| 1850 | } | ||
| 1851 | } | ||
| 1852 | |||
| 1853 | |||
| 1854 | //System.out.println("[Access member '" + | ||
| 1855 | // newf + "' created for field '" + | ||
| 1856 | // field +"' in class '" + this + "']"); | ||
| 1857 | |||
| 1858 | return newf; | ||
| 1859 | } | ||
| 1860 | |||
| 1861 | /** | ||
| 1862 | * Find an inner class of 'this', chosen arbitrarily. | ||
| 1863 | * Result is always an actual class, never an interface. | ||
| 1864 | * Returns null if none found. | ||
| 1865 | */ | ||
| 1866 | SourceClass findLookupContext() { | ||
| 1867 | // Look for an immediate inner class. | ||
| 1868 | for (MemberDefinition f = getFirstMember(); | ||
| 1869 | f != null; | ||
| 1870 | f = f.getNextMember()) { | ||
| 1871 | if (f.isInnerClass()) { | ||
| 1872 | SourceClass ic = (SourceClass)f.getInnerClass(); | ||
| 1873 | if (!ic.isInterface()) { | ||
| 1874 | return ic; | ||
| 1875 | } | ||
| 1876 | } | ||
| 1877 | } | ||
| 1878 | // Look for a class nested within an immediate inner interface. | ||
| 1879 | // At this point, we have given up on finding a minimally-nested | ||
| 1880 | // class (which would require a breadth-first traversal). It doesn't | ||
| 1881 | // really matter which inner class we find. | ||
| 1882 | for (MemberDefinition f = getFirstMember(); | ||
| 1883 | f != null; | ||
| 1884 | f = f.getNextMember()) { | ||
| 1885 | if (f.isInnerClass()) { | ||
| 1886 | SourceClass lc = | ||
| 1887 | ((SourceClass)f.getInnerClass()).findLookupContext(); | ||
| 1888 | if (lc != null) { | ||
| 1889 | return lc; | ||
| 1890 | } | ||
| 1891 | } | ||
| 1892 | } | ||
| 1893 | // No inner classes. | ||
| 1894 | return null; | ||
| 1895 | } | ||
| 1896 | |||
| 1897 | private MemberDefinition lookup = null; | ||
| 1898 | |||
| 1899 | /** | ||
| 1900 | * Get helper method for class literal lookup. | ||
| 1901 | */ | ||
| 1902 | public MemberDefinition getClassLiteralLookup(long fwhere) { | ||
| 1903 | |||
| 1904 | // If we have already created a lookup method, reuse it. | ||
| 1905 | if (lookup != null) { | ||
| 1906 | return lookup; | ||
| 1907 | } | ||
| 1908 | |||
| 1909 | // If the current class is a nested class, make sure we put the | ||
| 1910 | // lookup method in the outermost class. Set 'lookup' for the | ||
| 1911 | // intervening inner classes so we won't have to do the search | ||
| 1912 | // again. | ||
| 1913 | if (outerClass != null) { | ||
| 1914 | lookup = outerClass.getClassLiteralLookup(fwhere); | ||
| 1915 | return lookup; | ||
| 1916 | } | ||
| 1917 | |||
| 1918 | // If we arrive here, there was no existing 'class$' method. | ||
| 1919 | |||
| 1920 | ClassDefinition c = this; | ||
| 1921 | boolean needNewClass = false; | ||
| 1922 | |||
| 1923 | if (isInterface()) { | ||
| 1924 | // The top-level type is an interface. Try to find an existing | ||
| 1925 | // inner class in which to create the helper method. Any will do. | ||
| 1926 | c = findLookupContext(); | ||
| 1927 | if (c == null) { | ||
| 1928 | // The interface has no inner classes. Create an anonymous | ||
| 1929 | // inner class to hold the helper method, as an interface must | ||
| 1930 | // not have any methods. The tests above for prior creation | ||
| 1931 | // of a 'class$' method assure that only one such class is | ||
| 1932 | // allocated for each outermost class containing a class | ||
| 1933 | // literal embedded somewhere within. Part of fix for 4055017. | ||
| 1934 | needNewClass = true; | ||
| 1935 | IdentifierToken sup = | ||
| 1936 | new IdentifierToken(fwhere, idJavaLangObject); | ||
| 1937 | IdentifierToken interfaces[] = {}; | ||
| 1938 | IdentifierToken t = new IdentifierToken(fwhere, idNull); | ||
| 1939 | int mod = M_PUBLIC | M_ANONYMOUS | M_STATIC | M_SYNTHETIC; | ||
| 1940 | c = (SourceClass) | ||
| 1941 | toplevelEnv.makeClassDefinition(toplevelEnv, | ||
| 1942 | fwhere, t, null, mod, | ||
| 1943 | sup, interfaces, this); | ||
| 1944 | } | ||
| 1945 | } | ||
| 1946 | |||
| 1947 | |||
| 1948 | // The name of the class-getter stub is "class$" | ||
| 1949 | Identifier idDClass = Identifier.lookup(prefixClass); | ||
| 1950 | Type strarg[] = { Type.tString }; | ||
| 1951 | |||
| 1952 | // Some sanity checks of questionable value. | ||
| 1953 | // | ||
| 1954 | // This check became useless after matchMethod() was modified | ||
| 1955 | // to not return synthetic methods. | ||
| 1956 | // | ||
| 1957 | //try { | ||
| 1958 | // lookup = c.matchMethod(toplevelEnv, c, idDClass, strarg); | ||
| 1959 | //} catch (ClassNotFound ee) { | ||
| 1960 | // throw new CompilerError("unexpected missing class"); | ||
| 1961 | //} catch (AmbiguousMember ee) { | ||
| 1962 | // throw new CompilerError("synthetic name clash"); | ||
| 1963 | //} | ||
| 1964 | //if (lookup != null && lookup.getClassDefinition() == c) { | ||
| 1965 | // // Error if method found was not inherited. | ||
| 1966 | // throw new CompilerError("unexpected duplicate"); | ||
| 1967 | //} | ||
| 1968 | // Some sanity checks of questionable value. | ||
| 1969 | |||
| 1970 | /* // The helper function looks like this. | ||
| 1971 | * // It simply maps a checked exception to an unchecked one. | ||
| 1972 | * static Class class$(String class$) { | ||
| 1973 | * try { return Class.forName(class$); } | ||
| 1974 | * catch (ClassNotFoundException forName) { | ||
| 1975 | * throw new NoClassDefFoundError(forName.getMessage()); | ||
| 1976 | * } | ||
| 1977 | * } | ||
| 1978 | */ | ||
| 1979 | long w = c.getWhere(); | ||
| 1980 | IdentifierToken arg = new IdentifierToken(w, idDClass); | ||
| 1981 | Expression e = new IdentifierExpression(arg); | ||
| 1982 | Expression a1[] = { e }; | ||
| 1983 | Identifier idForName = Identifier.lookup("forName"); | ||
| 1984 | e = new MethodExpression(w, new TypeExpression(w, Type.tClassDesc), | ||
| 1985 | idForName, a1); | ||
| 1986 | Statement body = new ReturnStatement(w, e); | ||
| 1987 | // map the exceptions | ||
| 1988 | Identifier idClassNotFound = | ||
| 1989 | Identifier.lookup("java.lang.ClassNotFoundException"); | ||
| 1990 | Identifier idNoClassDefFound = | ||
| 1991 | Identifier.lookup("java.lang.NoClassDefFoundError"); | ||
| 1992 | Type ctyp = Type.tClass(idClassNotFound); | ||
| 1993 | Type exptyp = Type.tClass(idNoClassDefFound); | ||
| 1994 | Identifier idGetMessage = Identifier.lookup("getMessage"); | ||
| 1995 | e = new IdentifierExpression(w, idForName); | ||
| 1996 | e = new MethodExpression(w, e, idGetMessage, new Expression[0]); | ||
| 1997 | Expression a2[] = { e }; | ||
| 1998 | e = new NewInstanceExpression(w, new TypeExpression(w, exptyp), a2); | ||
| 1999 | Statement handler = new CatchStatement(w, new TypeExpression(w, ctyp), | ||
| 2000 | new IdentifierToken(idForName), | ||
| 2001 | new ThrowStatement(w, e)); | ||
| 2002 | Statement handlers[] = { handler }; | ||
| 2003 | body = new TryStatement(w, body, handlers); | ||
| 2004 | |||
| 2005 | Type mtype = Type.tMethod(Type.tClassDesc, strarg); | ||
| 2006 | IdentifierToken args[] = { arg }; | ||
| 2007 | |||
| 2008 | // Use default (package) access. If private, an access method would | ||
| 2009 | // be needed in the event that the class literal belonged to an interface. | ||
| 2010 | // Also, making it private tickles bug 4098316. | ||
| 2011 | lookup = toplevelEnv.makeMemberDefinition(toplevelEnv, w, | ||
| 2012 | c, null, | ||
| 2013 | M_STATIC | M_SYNTHETIC, | ||
| 2014 | mtype, idDClass, | ||
| 2015 | args, null, body); | ||
| 2016 | |||
| 2017 | // If a new class was created to contain the helper method, | ||
| 2018 | // check it now. | ||
| 2019 | if (needNewClass) { | ||
| 2020 | if (c.getClassDeclaration().getStatus() == CS_CHECKED) { | ||
| 2021 | throw new CompilerError("duplicate check"); | ||
| 2022 | } | ||
| 2023 | c.getClassDeclaration().setDefinition(c, CS_PARSED); | ||
| 2024 | Expression argsX[] = {}; | ||
| 2025 | Type argTypesX[] = {}; | ||
| 2026 | try { | ||
| 2027 | ClassDefinition sup = | ||
| 2028 | toplevelEnv.getClassDefinition(idJavaLangObject); | ||
| 2029 | c.checkLocalClass(toplevelEnv, null, | ||
| 2030 | new Vset(), sup, argsX, argTypesX); | ||
| 2031 | } catch (ClassNotFound ee) {}; | ||
| 2032 | } | ||
| 2033 | |||
| 2034 | return lookup; | ||
| 2035 | } | ||
| 2036 | |||
| 2037 | |||
| 2038 | /** | ||
| 2039 | * A list of active ongoing compilations. This list | ||
| 2040 | * is used to stop two compilations from saving the | ||
| 2041 | * same class. | ||
| 2042 | */ | ||
| 2043 | private static Vector active = new Vector(); | ||
| 2044 | |||
| 2045 | /** | ||
| 2046 | * Compile this class | ||
| 2047 | */ | ||
| 2048 | public void compile(OutputStream out) | ||
| 2049 | throws InterruptedException, IOException { | ||
| 2050 | Environment env = toplevelEnv; | ||
| 2051 | synchronized (active) { | ||
| 2052 | while (active.contains(getName())) { | ||
| 2053 | active.wait(); | ||
| 2054 | } | ||
| 2055 | active.addElement(getName()); | ||
| 2056 | } | ||
| 2057 | |||
| 2058 | try { | ||
| 2059 | compileClass(env, out); | ||
| 2060 | } catch (ClassNotFound e) { | ||
| 2061 | throw new CompilerError(e); | ||
| 2062 | } finally { | ||
| 2063 | synchronized (active) { | ||
| 2064 | active.removeElement(getName()); | ||
| 2065 | active.notifyAll(); | ||
| 2066 | } | ||
| 2067 | } | ||
| 2068 | } | ||
| 2069 | |||
| 2070 | /** | ||
| 2071 | * Verify that the modifier bits included in 'required' are | ||
| 2072 | * all present in 'mods', otherwise signal an internal error. | ||
| 2073 | * Note that errors in the source program may corrupt the modifiers, | ||
| 2074 | * thus we rely on the fact that 'CompilerError' exceptions are | ||
| 2075 | * silently ignored after an error message has been issued. | ||
| 2076 | */ | ||
| 2077 | private static void assertModifiers(int mods, int required) { | ||
| 2078 | if ((mods & required) != required) { | ||
| 2079 | throw new CompilerError("illegal class modifiers"); | ||
| 2080 | } | ||
| 2081 | } | ||
| 2082 | |||
| 2083 | protected void compileClass(Environment env, OutputStream out) | ||
| 2084 | throws IOException, ClassNotFound { | ||
| 2085 | Vector variables = new Vector(); | ||
| 2086 | Vector methods = new Vector(); | ||
| 2087 | Vector innerClasses = new Vector(); | ||
| 2088 | CompilerMember init = new CompilerMember(new MemberDefinition(getWhere(), this, M_STATIC, Type.tMethod(Type.tVoid), idClassInit, null, null), new Assembler()); | ||
| 2089 | Context ctx = new Context((Context)null, init.field); | ||
| 2090 | |||
| 2091 | for (ClassDefinition def = this; def.isInnerClass(); def = def.getOuterClass()) { | ||
| 2092 | innerClasses.addElement(def); | ||
| 2093 | } | ||
| 2094 | // Reverse the order, so that outer levels come first: | ||
| 2095 | int ncsize = innerClasses.size(); | ||
| 2096 | for (int i = ncsize; --i >= 0; ) | ||
| 2097 | innerClasses.addElement(innerClasses.elementAt(i)); | ||
| 2098 | for (int i = ncsize; --i >= 0; ) | ||
| 2099 | innerClasses.removeElementAt(i); | ||
| 2100 | |||
| 2101 | // System.out.println("compile class " + getName()); | ||
| 2102 | |||
| 2103 | boolean haveDeprecated = this.isDeprecated(); | ||
| 2104 | boolean haveSynthetic = this.isSynthetic(); | ||
| 2105 | boolean haveConstantValue = false; | ||
| 2106 | boolean haveExceptions = false; | ||
| 2107 | |||
| 2108 | // Generate code for all fields | ||
| 2109 | for (SourceMember field = (SourceMember)getFirstMember(); | ||
| 2110 | field != null; | ||
| 2111 | field = (SourceMember)field.getNextMember()) { | ||
| 2112 | |||
| 2113 | //System.out.println("compile field " + field.getName()); | ||
| 2114 | |||
| 2115 | haveDeprecated |= field.isDeprecated(); | ||
| 2116 | haveSynthetic |= field.isSynthetic(); | ||
| 2117 | |||
| 2118 | try { | ||
| 2119 | if (field.isMethod()) { | ||
| 2120 | haveExceptions |= | ||
| 2121 | (field.getExceptions(env).length > 0); | ||
| 2122 | |||
| 2123 | if (field.isInitializer()) { | ||
| 2124 | if (field.isStatic()) { | ||
| 2125 | field.code(env, init.asm); | ||
| 2126 | } | ||
| 2127 | } else { | ||
| 2128 | CompilerMember f = | ||
| 2129 | new CompilerMember(field, new Assembler()); | ||
| 2130 | field.code(env, f.asm); | ||
| 2131 | methods.addElement(f); | ||
| 2132 | } | ||
| 2133 | } else if (field.isInnerClass()) { | ||
| 2134 | innerClasses.addElement(field.getInnerClass()); | ||
| 2135 | } else if (field.isVariable()) { | ||
| 2136 | field.inline(env); | ||
| 2137 | CompilerMember f = new CompilerMember(field, null); | ||
| 2138 | variables.addElement(f); | ||
| 2139 | if (field.isStatic()) { | ||
| 2140 | field.codeInit(env, ctx, init.asm); | ||
| 2141 | |||
| 2142 | } | ||
| 2143 | haveConstantValue |= | ||
| 2144 | (field.getInitialValue() != null); | ||
| 2145 | } | ||
| 2146 | } catch (CompilerError ee) { | ||
| 2147 | ee.printStackTrace(); | ||
| 2148 | env.error(field, 0, "generic", | ||
| 2149 | field.getClassDeclaration() + ":" + field + | ||
| 2150 | "@" + ee.toString(), null, null); | ||
| 2151 | } | ||
| 2152 | } | ||
| 2153 | if (!init.asm.empty()) { | ||
| 2154 | init.asm.add(getWhere(), opc_return, true); | ||
| 2155 | methods.addElement(init); | ||
| 2156 | } | ||
| 2157 | |||
| 2158 | // bail out if there were any errors | ||
| 2159 | if (getNestError()) { | ||
| 2160 | return; | ||
| 2161 | } | ||
| 2162 | |||
| 2163 | int nClassAttrs = 0; | ||
| 2164 | |||
| 2165 | // Insert constants | ||
| 2166 | if (methods.size() > 0) { | ||
| 2167 | tab.put("Code"); | ||
| 2168 | } | ||
| 2169 | if (haveConstantValue) { | ||
| 2170 | tab.put("ConstantValue"); | ||
| 2171 | } | ||
| 2172 | |||
| 2173 | String sourceFile = null; | ||
| 2174 | if (env.debug_source()) { | ||
| 2175 | sourceFile = ((ClassFile)getSource()).getName(); | ||
| 2176 | tab.put("SourceFile"); | ||
| 2177 | tab.put(sourceFile); | ||
| 2178 | nClassAttrs += 1; | ||
| 2179 | } | ||
| 2180 | |||
| 2181 | if (haveExceptions) { | ||
| 2182 | tab.put("Exceptions"); | ||
| 2183 | } | ||
| 2184 | |||
| 2185 | if (env.debug_lines()) { | ||
| 2186 | tab.put("LineNumberTable"); | ||
| 2187 | } | ||
| 2188 | if (haveDeprecated) { | ||
| 2189 | tab.put("Deprecated"); | ||
| 2190 | if (this.isDeprecated()) { | ||
| 2191 | nClassAttrs += 1; | ||
| 2192 | } | ||
| 2193 | } | ||
| 2194 | if (haveSynthetic) { | ||
| 2195 | tab.put("Synthetic"); | ||
| 2196 | if (this.isSynthetic()) { | ||
| 2197 | nClassAttrs += 1; | ||
| 2198 | } | ||
| 2199 | } | ||
| 2200 | // JCOV | ||
| 2201 | if (env.coverage()) { | ||
| 2202 | nClassAttrs += 2; // AbsoluteSourcePath, TimeStamp | ||
| 2203 | tab.put("AbsoluteSourcePath"); | ||
| 2204 | tab.put("TimeStamp"); | ||
| 2205 | tab.put("CoverageTable"); | ||
| 2206 | } | ||
| 2207 | // end JCOV | ||
| 2208 | if (env.debug_vars()) { | ||
| 2209 | tab.put("LocalVariableTable"); | ||
| 2210 | } | ||
| 2211 | if (innerClasses.size() > 0) { | ||
| 2212 | tab.put("InnerClasses"); | ||
| 2213 | nClassAttrs += 1; // InnerClasses | ||
| 2214 | } | ||
| 2215 | |||
| 2216 | // JCOV | ||
| 2217 | String absoluteSourcePath = ""; | ||
| 2218 | long timeStamp = 0; | ||
| 2219 | |||
| 2220 | if (env.coverage()) { | ||
| 2221 | absoluteSourcePath = getAbsoluteName(); | ||
| 2222 | timeStamp = System.currentTimeMillis(); | ||
| 2223 | tab.put(absoluteSourcePath); | ||
| 2224 | } | ||
| 2225 | // end JCOV | ||
| 2226 | tab.put(getClassDeclaration()); | ||
| 2227 | if (getSuperClass() != null) { | ||
| 2228 | tab.put(getSuperClass()); | ||
| 2229 | } | ||
| 2230 | for (int i = 0 ; i < interfaces.length ; i++) { | ||
| 2231 | tab.put(interfaces[i]); | ||
| 2232 | } | ||
| 2233 | |||
| 2234 | // Sort the methods in order to make sure both constant pool | ||
| 2235 | // entries and methods are in a deterministic order from run | ||
| 2236 | // to run (this allows comparing class files for a fixed point | ||
| 2237 | // to validate the compiler) | ||
| 2238 | CompilerMember[] ordered_methods = | ||
| 2239 | new CompilerMember[methods.size()]; | ||
| 2240 | methods.copyInto(ordered_methods); | ||
| 2241 | java.util.Arrays.sort(ordered_methods); | ||
| 2242 | for (int i=0; i<methods.size(); i++) | ||
| 2243 | methods.setElementAt(ordered_methods[i], i); | ||
| 2244 | |||
| 2245 | // Optimize Code and Collect method constants | ||
| 2246 | for (Enumeration e = methods.elements() ; e.hasMoreElements() ; ) { | ||
| 2247 | CompilerMember f = (CompilerMember)e.nextElement(); | ||
| 2248 | try { | ||
| 2249 | f.asm.optimize(env); | ||
| 2250 | f.asm.collect(env, f.field, tab); | ||
| 2251 | tab.put(f.name); | ||
| 2252 | tab.put(f.sig); | ||
| 2253 | ClassDeclaration exp[] = f.field.getExceptions(env); | ||
| 2254 | for (int i = 0 ; i < exp.length ; i++) { | ||
| 2255 | tab.put(exp[i]); | ||
| 2256 | } | ||
| 2257 | } catch (Exception ee) { | ||
| 2258 | ee.printStackTrace(); | ||
| 2259 | env.error(f.field, -1, "generic", f.field.getName() + "@" + ee.toString(), null, null); | ||
| 2260 | f.asm.listing(System.out); | ||
| 2261 | } | ||
| 2262 | } | ||
| 2263 | |||
| 2264 | // Collect field constants | ||
| 2265 | for (Enumeration e = variables.elements() ; e.hasMoreElements() ; ) { | ||
| 2266 | CompilerMember f = (CompilerMember)e.nextElement(); | ||
| 2267 | tab.put(f.name); | ||
| 2268 | tab.put(f.sig); | ||
| 2269 | |||
| 2270 | Object val = f.field.getInitialValue(); | ||
| 2271 | if (val != null) { | ||
| 2272 | tab.put((val instanceof String) ? new StringExpression(f.field.getWhere(), (String)val) : val); | ||
| 2273 | } | ||
| 2274 | } | ||
| 2275 | |||
| 2276 | // Collect inner class constants | ||
| 2277 | for (Enumeration e = innerClasses.elements(); | ||
| 2278 | e.hasMoreElements() ; ) { | ||
| 2279 | ClassDefinition inner = (ClassDefinition)e.nextElement(); | ||
| 2280 | tab.put(inner.getClassDeclaration()); | ||
| 2281 | |||
| 2282 | // If the inner class is local, we do not need to add its | ||
| 2283 | // outer class here -- the outer_class_info_index is zero. | ||
| 2284 | if (!inner.isLocal()) { | ||
| 2285 | ClassDefinition outer = inner.getOuterClass(); | ||
| 2286 | tab.put(outer.getClassDeclaration()); | ||
| 2287 | } | ||
| 2288 | |||
| 2289 | // If the local name of the class is idNull, don't bother to | ||
| 2290 | // add it to the constant pool. We won't need it. | ||
| 2291 | Identifier inner_local_name = inner.getLocalName(); | ||
| 2292 | if (inner_local_name != idNull) { | ||
| 2293 | tab.put(inner_local_name.toString()); | ||
| 2294 | } | ||
| 2295 | } | ||
| 2296 | |||
| 2297 | // Write header | ||
| 2298 | DataOutputStream data = new DataOutputStream(out); | ||
| 2299 | data.writeInt(JAVA_MAGIC); | ||
| 2300 | data.writeShort(toplevelEnv.getMinorVersion()); | ||
| 2301 | data.writeShort(toplevelEnv.getMajorVersion()); | ||
| 2302 | tab.write(env, data); | ||
| 2303 | |||
| 2304 | // Write class information | ||
| 2305 | int cmods = getModifiers() & MM_CLASS; | ||
| 2306 | |||
| 2307 | // Certain modifiers are implied: | ||
| 2308 | // 1. Any interface (nested or not) is implicitly deemed to be abstract, | ||
| 2309 | // whether it is explicitly marked so or not. (Java 1.0.) | ||
| 2310 | // 2. A interface which is a member of a type is implicitly deemed to | ||
| 2311 | // be static, whether it is explicitly marked so or not. | ||
| 2312 | // 3a. A type which is a member of an interface is implicitly deemed | ||
| 2313 | // to be public, whether it is explicitly marked so or not. | ||
| 2314 | // 3b. A type which is a member of an interface is implicitly deemed | ||
| 2315 | // to be static, whether it is explicitly marked so or not. | ||
| 2316 | // All of these rules are implemented in 'BatchParser.beginClass', | ||
| 2317 | // but the results are verified here. | ||
| 2318 | |||
| 2319 | if (isInterface()) { | ||
| 2320 | // Rule 1. | ||
| 2321 | // The VM spec states that ACC_ABSTRACT must be set when | ||
| 2322 | // ACC_INTERFACE is; this was not done by javac prior to 1.2, | ||
| 2323 | // and the runtime compensates by setting it. Making sure | ||
| 2324 | // it is set here will allow the runtime hack to eventually | ||
| 2325 | // be removed. Rule 2 doesn't apply to transformed modifiers. | ||
| 2326 | assertModifiers(cmods, ACC_ABSTRACT); | ||
| 2327 | } else { | ||
| 2328 | // Contrary to the JVM spec, we only set ACC_SUPER for classes, | ||
| 2329 | // not interfaces. This is a workaround for a bug in IE3.0, | ||
| 2330 | // which refuses interfaces with ACC_SUPER on. | ||
| 2331 | cmods |= ACC_SUPER; | ||
| 2332 | } | ||
| 2333 | |||
| 2334 | // If this is a nested class, transform access modifiers. | ||
| 2335 | if (outerClass != null) { | ||
| 2336 | // If private, transform to default (package) access. | ||
| 2337 | // If protected, transform to public. | ||
| 2338 | // M_PRIVATE and M_PROTECTED are already masked off by MM_CLASS above. | ||
| 2339 | // cmods &= ~(M_PRIVATE | M_PROTECTED); | ||
| 2340 | if (isProtected()) cmods |= M_PUBLIC; | ||
| 2341 | // Rule 3a. Note that Rule 3b doesn't apply to transformed modifiers. | ||
| 2342 | if (outerClass.isInterface()) { | ||
| 2343 | assertModifiers(cmods, M_PUBLIC); | ||
| 2344 | } | ||
| 2345 | } | ||
| 2346 | |||
| 2347 | data.writeShort(cmods); | ||
| 2348 | |||
| 2349 | if (env.dumpModifiers()) { | ||
| 2350 | Identifier cn = getName(); | ||
| 2351 | Identifier nm = | ||
| 2352 | Identifier.lookup(cn.getQualifier(), cn.getFlatName()); | ||
| 2353 | System.out.println(); | ||
| 2354 | System.out.println("CLASSFILE " + nm); | ||
| 2355 | System.out.println("---" + classModifierString(cmods)); | ||
| 2356 | } | ||
| 2357 | |||
| 2358 | data.writeShort(tab.index(getClassDeclaration())); | ||
| 2359 | data.writeShort((getSuperClass() != null) ? tab.index(getSuperClass()) : 0); | ||
| 2360 | data.writeShort(interfaces.length); | ||
| 2361 | for (int i = 0 ; i < interfaces.length ; i++) { | ||
| 2362 | data.writeShort(tab.index(interfaces[i])); | ||
| 2363 | } | ||
| 2364 | |||
| 2365 | // write variables | ||
| 2366 | ByteArrayOutputStream buf = new ByteArrayOutputStream(256); | ||
| 2367 | ByteArrayOutputStream attbuf = new ByteArrayOutputStream(256); | ||
| 2368 | DataOutputStream databuf = new DataOutputStream(buf); | ||
| 2369 | |||
| 2370 | data.writeShort(variables.size()); | ||
| 2371 | for (Enumeration e = variables.elements() ; e.hasMoreElements() ; ) { | ||
| 2372 | CompilerMember f = (CompilerMember)e.nextElement(); | ||
| 2373 | Object val = f.field.getInitialValue(); | ||
| 2374 | |||
| 2375 | data.writeShort(f.field.getModifiers() & MM_FIELD); | ||
| 2376 | data.writeShort(tab.index(f.name)); | ||
| 2377 | data.writeShort(tab.index(f.sig)); | ||
| 2378 | |||
| 2379 | int fieldAtts = (val != null ? 1 : 0); | ||
| 2380 | boolean dep = f.field.isDeprecated(); | ||
| 2381 | boolean syn = f.field.isSynthetic(); | ||
| 2382 | fieldAtts += (dep ? 1 : 0) + (syn ? 1 : 0); | ||
| 2383 | |||
| 2384 | data.writeShort(fieldAtts); | ||
| 2385 | if (val != null) { | ||
| 2386 | data.writeShort(tab.index("ConstantValue")); | ||
| 2387 | data.writeInt(2); | ||
| 2388 | data.writeShort(tab.index((val instanceof String) ? new StringExpression(f.field.getWhere(), (String)val) : val)); | ||
| 2389 | } | ||
| 2390 | if (dep) { | ||
| 2391 | data.writeShort(tab.index("Deprecated")); | ||
| 2392 | data.writeInt(0); | ||
| 2393 | } | ||
| 2394 | if (syn) { | ||
| 2395 | data.writeShort(tab.index("Synthetic")); | ||
| 2396 | data.writeInt(0); | ||
| 2397 | } | ||
| 2398 | } | ||
| 2399 | |||
| 2400 | // write methods | ||
| 2401 | |||
| 2402 | data.writeShort(methods.size()); | ||
| 2403 | for (Enumeration e = methods.elements() ; e.hasMoreElements() ; ) { | ||
| 2404 | CompilerMember f = (CompilerMember)e.nextElement(); | ||
| 2405 | |||
| 2406 | int xmods = f.field.getModifiers() & MM_METHOD; | ||
| 2407 | // Transform floating point modifiers. M_STRICTFP | ||
| 2408 | // of member + status of enclosing class turn into | ||
| 2409 | // ACC_STRICT bit. | ||
| 2410 | if (((xmods & M_STRICTFP)!=0) || ((cmods & M_STRICTFP)!=0)) { | ||
| 2411 | xmods |= ACC_STRICT; | ||
| 2412 | } else { | ||
| 2413 | // Use the default | ||
| 2414 | if (env.strictdefault()) { | ||
| 2415 | xmods |= ACC_STRICT; | ||
| 2416 | } | ||
| 2417 | } | ||
| 2418 | data.writeShort(xmods); | ||
| 2419 | |||
| 2420 | data.writeShort(tab.index(f.name)); | ||
| 2421 | data.writeShort(tab.index(f.sig)); | ||
| 2422 | ClassDeclaration exp[] = f.field.getExceptions(env); | ||
| 2423 | int methodAtts = ((exp.length > 0) ? 1 : 0); | ||
| 2424 | boolean dep = f.field.isDeprecated(); | ||
| 2425 | boolean syn = f.field.isSynthetic(); | ||
| 2426 | methodAtts += (dep ? 1 : 0) + (syn ? 1 : 0); | ||
| 2427 | |||
| 2428 | if (!f.asm.empty()) { | ||
| 2429 | data.writeShort(methodAtts+1); | ||
| 2430 | f.asm.write(env, databuf, f.field, tab); | ||
| 2431 | int natts = 0; | ||
| 2432 | if (env.debug_lines()) { | ||
| 2433 | natts++; | ||
| 2434 | } | ||
| 2435 | // JCOV | ||
| 2436 | if (env.coverage()) { | ||
| 2437 | natts++; | ||
| 2438 | } | ||
| 2439 | // end JCOV | ||
| 2440 | if (env.debug_vars()) { | ||
| 2441 | natts++; | ||
| 2442 | } | ||
| 2443 | databuf.writeShort(natts); | ||
| 2444 | |||
| 2445 | if (env.debug_lines()) { | ||
| 2446 | f.asm.writeLineNumberTable(env, new DataOutputStream(attbuf), tab); | ||
| 2447 | databuf.writeShort(tab.index("LineNumberTable")); | ||
| 2448 | databuf.writeInt(attbuf.size()); | ||
| 2449 | attbuf.writeTo(buf); | ||
| 2450 | attbuf.reset(); | ||
| 2451 | } | ||
| 2452 | |||
| 2453 | //JCOV | ||
| 2454 | if (env.coverage()) { | ||
| 2455 | f.asm.writeCoverageTable(env, (ClassDefinition)this, new DataOutputStream(attbuf), tab, f.field.getWhere()); | ||
| 2456 | databuf.writeShort(tab.index("CoverageTable")); | ||
| 2457 | databuf.writeInt(attbuf.size()); | ||
| 2458 | attbuf.writeTo(buf); | ||
| 2459 | attbuf.reset(); | ||
| 2460 | } | ||
| 2461 | // end JCOV | ||
| 2462 | if (env.debug_vars()) { | ||
| 2463 | f.asm.writeLocalVariableTable(env, f.field, new DataOutputStream(attbuf), tab); | ||
| 2464 | databuf.writeShort(tab.index("LocalVariableTable")); | ||
| 2465 | databuf.writeInt(attbuf.size()); | ||
| 2466 | attbuf.writeTo(buf); | ||
| 2467 | attbuf.reset(); | ||
| 2468 | } | ||
| 2469 | |||
| 2470 | data.writeShort(tab.index("Code")); | ||
| 2471 | data.writeInt(buf.size()); | ||
| 2472 | buf.writeTo(data); | ||
| 2473 | buf.reset(); | ||
| 2474 | } else { | ||
| 2475 | //JCOV | ||
| 2476 | if ((env.coverage()) && ((f.field.getModifiers() & M_NATIVE) > 0)) | ||
| 2477 | f.asm.addNativeToJcovTab(env, (ClassDefinition)this); | ||
| 2478 | // end JCOV | ||
| 2479 | data.writeShort(methodAtts); | ||
| 2480 | } | ||
| 2481 | |||
| 2482 | if (exp.length > 0) { | ||
| 2483 | data.writeShort(tab.index("Exceptions")); | ||
| 2484 | data.writeInt(2 + exp.length * 2); | ||
| 2485 | data.writeShort(exp.length); | ||
| 2486 | for (int i = 0 ; i < exp.length ; i++) { | ||
| 2487 | data.writeShort(tab.index(exp[i])); | ||
| 2488 | } | ||
| 2489 | } | ||
| 2490 | if (dep) { | ||
| 2491 | data.writeShort(tab.index("Deprecated")); | ||
| 2492 | data.writeInt(0); | ||
| 2493 | } | ||
| 2494 | if (syn) { | ||
| 2495 | data.writeShort(tab.index("Synthetic")); | ||
| 2496 | data.writeInt(0); | ||
| 2497 | } | ||
| 2498 | } | ||
| 2499 | |||
| 2500 | // class attributes | ||
| 2501 | data.writeShort(nClassAttrs); | ||
| 2502 | |||
| 2503 | if (env.debug_source()) { | ||
| 2504 | data.writeShort(tab.index("SourceFile")); | ||
| 2505 | data.writeInt(2); | ||
| 2506 | data.writeShort(tab.index(sourceFile)); | ||
| 2507 | } | ||
| 2508 | |||
| 2509 | if (this.isDeprecated()) { | ||
| 2510 | data.writeShort(tab.index("Deprecated")); | ||
| 2511 | data.writeInt(0); | ||
| 2512 | } | ||
| 2513 | if (this.isSynthetic()) { | ||
| 2514 | data.writeShort(tab.index("Synthetic")); | ||
| 2515 | data.writeInt(0); | ||
| 2516 | } | ||
| 2517 | |||
| 2518 | // JCOV | ||
| 2519 | if (env.coverage()) { | ||
| 2520 | data.writeShort(tab.index("AbsoluteSourcePath")); | ||
| 2521 | data.writeInt(2); | ||
| 2522 | data.writeShort(tab.index(absoluteSourcePath)); | ||
| 2523 | data.writeShort(tab.index("TimeStamp")); | ||
| 2524 | data.writeInt(8); | ||
| 2525 | data.writeLong(timeStamp); | ||
| 2526 | } | ||
| 2527 | // end JCOV | ||
| 2528 | |||
| 2529 | if (innerClasses.size() > 0) { | ||
| 2530 | data.writeShort(tab.index("InnerClasses")); | ||
| 2531 | data.writeInt(2 + 2*4*innerClasses.size()); | ||
| 2532 | data.writeShort(innerClasses.size()); | ||
| 2533 | for (Enumeration e = innerClasses.elements() ; | ||
| 2534 | e.hasMoreElements() ; ) { | ||
| 2535 | // For each inner class name transformation, we have a record | ||
| 2536 | // with the following fields: | ||
| 2537 | // | ||
| 2538 | // u2 inner_class_info_index; // CONSTANT_Class_info index | ||
| 2539 | // u2 outer_class_info_index; // CONSTANT_Class_info index | ||
| 2540 | // u2 inner_name_index; // CONSTANT_Utf8_info index | ||
| 2541 | // u2 inner_class_access_flags; // access_flags bitmask | ||
| 2542 | // | ||
| 2543 | // The spec states that outer_class_info_index is 0 iff | ||
| 2544 | // the inner class is not a member of its enclosing class (i.e. | ||
| 2545 | // it is a local or anonymous class). The spec also states | ||
| 2546 | // that if a class is anonymous then inner_name_index should | ||
| 2547 | // be 0. | ||
| 2548 | // | ||
| 2549 | // See also the initInnerClasses() method in BinaryClass.java. | ||
| 2550 | |||
| 2551 | // Generate inner_class_info_index. | ||
| 2552 | ClassDefinition inner = (ClassDefinition)e.nextElement(); | ||
| 2553 | data.writeShort(tab.index(inner.getClassDeclaration())); | ||
| 2554 | |||
| 2555 | // Generate outer_class_info_index. | ||
| 2556 | // | ||
| 2557 | // Checking isLocal() should probably be enough here, | ||
| 2558 | // but the check for isAnonymous is added for good | ||
| 2559 | // measure. | ||
| 2560 | if (inner.isLocal() || inner.isAnonymous()) { | ||
| 2561 | data.writeShort(0); | ||
| 2562 | } else { | ||
| 2563 | // Query: what about if inner.isInsideLocal()? | ||
| 2564 | // For now we continue to generate a nonzero | ||
| 2565 | // outer_class_info_index. | ||
| 2566 | ClassDefinition outer = inner.getOuterClass(); | ||
| 2567 | data.writeShort(tab.index(outer.getClassDeclaration())); | ||
| 2568 | } | ||
| 2569 | |||
| 2570 | // Generate inner_name_index. | ||
| 2571 | Identifier inner_name = inner.getLocalName(); | ||
| 2572 | if (inner_name == idNull) { | ||
| 2573 | if (!inner.isAnonymous()) { | ||
| 2574 | throw new CompilerError("compileClass(), anonymous"); | ||
| 2575 | } | ||
| 2576 | data.writeShort(0); | ||
| 2577 | } else { | ||
| 2578 | data.writeShort(tab.index(inner_name.toString())); | ||
| 2579 | } | ||
| 2580 | |||
| 2581 | // Generate inner_class_access_flags. | ||
| 2582 | int imods = inner.getInnerClassMember().getModifiers() | ||
| 2583 | & ACCM_INNERCLASS; | ||
| 2584 | |||
| 2585 | // Certain modifiers are implied for nested types. | ||
| 2586 | // See rules 1, 2, 3a, and 3b enumerated above. | ||
| 2587 | // All of these rules are implemented in 'BatchParser.beginClass', | ||
| 2588 | // but are verified here. | ||
| 2589 | |||
| 2590 | if (inner.isInterface()) { | ||
| 2591 | // Rules 1 and 2. | ||
| 2592 | assertModifiers(imods, M_ABSTRACT | M_STATIC); | ||
| 2593 | } | ||
| 2594 | if (inner.getOuterClass().isInterface()) { | ||
| 2595 | // Rules 3a and 3b. | ||
| 2596 | imods &= ~(M_PRIVATE | M_PROTECTED); // error recovery | ||
| 2597 | assertModifiers(imods, M_PUBLIC | M_STATIC); | ||
| 2598 | } | ||
| 2599 | |||
| 2600 | data.writeShort(imods); | ||
| 2601 | |||
| 2602 | if (env.dumpModifiers()) { | ||
| 2603 | Identifier fn = inner.getInnerClassMember().getName(); | ||
| 2604 | Identifier nm = | ||
| 2605 | Identifier.lookup(fn.getQualifier(), fn.getFlatName()); | ||
| 2606 | System.out.println("INNERCLASS " + nm); | ||
| 2607 | System.out.println("---" + classModifierString(imods)); | ||
| 2608 | } | ||
| 2609 | |||
| 2610 | } | ||
| 2611 | } | ||
| 2612 | |||
| 2613 | // Cleanup | ||
| 2614 | data.flush(); | ||
| 2615 | tab = null; | ||
| 2616 | |||
| 2617 | // JCOV | ||
| 2618 | // generate coverage data | ||
| 2619 | if (env.covdata()) { | ||
| 2620 | Assembler CovAsm = new Assembler(); | ||
| 2621 | CovAsm.GenVecJCov(env, (ClassDefinition)this, timeStamp); | ||
| 2622 | } | ||
| 2623 | // end JCOV | ||
| 2624 | } | ||
| 2625 | |||
| 2626 | /** | ||
| 2627 | * Print out the dependencies for this class (-xdepend) option | ||
| 2628 | */ | ||
| 2629 | |||
| 2630 | public void printClassDependencies(Environment env) { | ||
| 2631 | |||
| 2632 | // Only do this if the -xdepend flag is on | ||
| 2633 | if ( toplevelEnv.print_dependencies() ) { | ||
| 2634 | |||
| 2635 | // Name of java source file this class was in (full path) | ||
| 2636 | // e.g. /home/ohair/Test.java | ||
| 2637 | String src = ((ClassFile)getSource()).getAbsoluteName(); | ||
| 2638 | |||
| 2639 | // Class name, fully qualified | ||
| 2640 | // e.g. "java.lang.Object" or "FooBar" or "sun.tools.javac.Main" | ||
| 2641 | // Inner class names must be mangled, as ordinary '.' qualification | ||
| 2642 | // is used internally where the spec requires '$' separators. | ||
| 2643 | // String className = getName().toString(); | ||
| 2644 | String className = Type.mangleInnerType(getName()).toString(); | ||
| 2645 | |||
| 2646 | // Line number where class starts in the src file | ||
| 2647 | long startLine = getWhere() >> WHEREOFFSETBITS; | ||
| 2648 | |||
| 2649 | // Line number where class ends in the src file (not used yet) | ||
| 2650 | long endLine = getEndPosition() >> WHEREOFFSETBITS; | ||
| 2651 | |||
| 2652 | // First line looks like: | ||
| 2653 | // CLASS:src,startLine,endLine,className | ||
| 2654 | System.out.println( "CLASS:" | ||
| 2655 | + src + "," | ||
| 2656 | + startLine + "," | ||
| 2657 | + endLine + "," | ||
| 2658 | + className); | ||
| 2659 | |||
| 2660 | // For each class this class is dependent on: | ||
| 2661 | // CLDEP:className1,className2 | ||
| 2662 | // where className1 is the name of the class we are in, and | ||
| 2663 | // classname2 is the name of the class className1 | ||
| 2664 | // is dependent on. | ||
| 2665 | for(Enumeration e = deps.elements(); e.hasMoreElements(); ) { | ||
| 2666 | ClassDeclaration data = (ClassDeclaration) e.nextElement(); | ||
| 2667 | // Mangle name of class dependend on. | ||
| 2668 | String depName = | ||
| 2669 | Type.mangleInnerType(data.getName()).toString(); | ||
| 2670 | env.output("CLDEP:" + className + "," + depName); | ||
| 2671 | } | ||
| 2672 | } | ||
| 2673 | } | ||
| 2674 | } | ||