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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 | +} | |