1 /* 2 * Copyright (c) 1999, 2022, 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 com.sun.tools.javac.comp; 27 28 import java.util.Map; 29 import java.util.Optional; 30 31 import javax.tools.JavaFileObject; 32 import javax.tools.JavaFileManager; 33 34 import com.sun.tools.javac.code.*; 35 import com.sun.tools.javac.code.Kinds.KindName; 36 import com.sun.tools.javac.code.Kinds.KindSelector; 37 import com.sun.tools.javac.code.Scope.*; 38 import com.sun.tools.javac.code.Symbol.*; 39 import com.sun.tools.javac.code.Type.*; 40 import com.sun.tools.javac.code.Type.ClassType.Flavor; 41 import com.sun.tools.javac.main.Option.PkgInfo; 42 import com.sun.tools.javac.resources.CompilerProperties.Errors; 43 import com.sun.tools.javac.resources.CompilerProperties.Warnings; 44 import com.sun.tools.javac.tree.*; 45 import com.sun.tools.javac.tree.JCTree.*; 46 import com.sun.tools.javac.util.*; 47 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition; 48 import com.sun.tools.javac.util.List; 49 50 import static com.sun.tools.javac.code.Flags.*; 51 import static com.sun.tools.javac.code.Kinds.Kind.*; 52 53 /** This class enters symbols for all encountered definitions into 54 * the symbol table. The pass consists of high-level two phases, 55 * organized as follows: 56 * 57 * <p>In the first phase, all class symbols are entered into their 58 * enclosing scope, descending recursively down the tree for classes 59 * which are members of other classes. The class symbols are given a 60 * TypeEnter object as completer. 61 * 62 * <p>In the second phase classes are completed using 63 * TypeEnter.complete(). Completion might occur on demand, but 64 * any classes that are not completed that way will be eventually 65 * completed by processing the `uncompleted' queue. Completion 66 * entails determination of a class's parameters, supertype and 67 * interfaces, as well as entering all symbols defined in the 68 * class into its scope, with the exception of class symbols which 69 * have been entered in phase 1. 70 * 71 * <p>Whereas the first phase is organized as a sweep through all 72 * compiled syntax trees, the second phase is on-demand. Members of a 73 * class are entered when the contents of a class are first 74 * accessed. This is accomplished by installing completer objects in 75 * class symbols for compiled classes which invoke the type-enter 76 * phase for the corresponding class tree. 77 * 78 * <p>Classes migrate from one phase to the next via queues: 79 * 80 * <pre>{@literal 81 * class enter -> (Enter.uncompleted) --> type enter 82 * -> (Todo) --> attribute 83 * (only for toplevel classes) 84 * }</pre> 85 * 86 * <p><b>This is NOT part of any supported API. 87 * If you write code that depends on this, you do so at your own risk. 88 * This code and its internal interfaces are subject to change or 89 * deletion without notice.</b> 90 */ 91 public class Enter extends JCTree.Visitor { 92 protected static final Context.Key<Enter> enterKey = new Context.Key<>(); 93 94 Annotate annotate; 95 Log log; 96 Symtab syms; 97 Check chk; 98 TreeMaker make; 99 TypeEnter typeEnter; 100 Types types; 101 Lint lint; 102 Names names; 103 JavaFileManager fileManager; 104 PkgInfo pkginfoOpt; 105 TypeEnvs typeEnvs; 106 Modules modules; 107 JCDiagnostic.Factory diags; 108 boolean allowPrimitiveClasses; 109 110 private final Todo todo; 111 112 public static Enter instance(Context context) { 113 Enter instance = context.get(enterKey); 114 if (instance == null) 115 instance = new Enter(context); 116 return instance; 117 } 118 119 protected Enter(Context context) { 120 context.put(enterKey, this); 121 122 log = Log.instance(context); 123 make = TreeMaker.instance(context); 124 syms = Symtab.instance(context); 125 chk = Check.instance(context); 126 typeEnter = TypeEnter.instance(context); 127 types = Types.instance(context); 128 annotate = Annotate.instance(context); 129 lint = Lint.instance(context); 130 names = Names.instance(context); 131 modules = Modules.instance(context); 132 diags = JCDiagnostic.Factory.instance(context); 133 134 predefClassDef = make.ClassDef( 135 make.Modifiers(PUBLIC), 136 syms.predefClass.name, 137 List.nil(), 138 null, 139 List.nil(), 140 List.nil()); 141 predefClassDef.sym = syms.predefClass; 142 todo = Todo.instance(context); 143 fileManager = context.get(JavaFileManager.class); 144 145 Options options = Options.instance(context); 146 pkginfoOpt = PkgInfo.get(options); 147 typeEnvs = TypeEnvs.instance(context); 148 Source source = Source.instance(context); 149 allowPrimitiveClasses = Source.Feature.PRIMITIVE_CLASSES.allowedInSource(source) && options.isSet("enablePrimitiveClasses"); 150 } 151 152 /** Accessor for typeEnvs 153 */ 154 public Env<AttrContext> getEnv(TypeSymbol sym) { 155 return typeEnvs.get(sym); 156 } 157 158 public Iterable<Env<AttrContext>> getEnvs() { 159 return typeEnvs.values(); 160 } 161 162 public Env<AttrContext> getClassEnv(TypeSymbol sym) { 163 Env<AttrContext> localEnv = getEnv(sym); 164 if (localEnv == null) return null; 165 Env<AttrContext> lintEnv = localEnv; 166 while (lintEnv.info.lint == null) 167 lintEnv = lintEnv.next; 168 localEnv.info.lint = lintEnv.info.lint.augment(sym); 169 return localEnv; 170 } 171 172 /** The queue of all classes that might still need to be completed; 173 * saved and initialized by main(). 174 */ 175 ListBuffer<ClassSymbol> uncompleted; 176 177 /** The queue of modules whose imports still need to be checked. */ 178 ListBuffer<JCCompilationUnit> unfinishedModules = new ListBuffer<>(); 179 180 /** A dummy class to serve as enclClass for toplevel environments. 181 */ 182 private JCClassDecl predefClassDef; 183 184 /* ************************************************************************ 185 * environment construction 186 *************************************************************************/ 187 188 189 /** Create a fresh environment for class bodies. 190 * This will create a fresh scope for local symbols of a class, referred 191 * to by the environments info.scope field. 192 * This scope will contain 193 * - symbols for this and super 194 * - symbols for any type parameters 195 * In addition, it serves as an anchor for scopes of methods and initializers 196 * which are nested in this scope via Scope.dup(). 197 * This scope should not be confused with the members scope of a class. 198 * 199 * @param tree The class definition. 200 * @param env The environment current outside of the class definition. 201 */ 202 public Env<AttrContext> classEnv(JCClassDecl tree, Env<AttrContext> env) { 203 Env<AttrContext> localEnv = 204 env.dup(tree, env.info.dup(WriteableScope.create(tree.sym))); 205 localEnv.enclClass = tree; 206 localEnv.outer = env; 207 localEnv.info.isSelfCall = false; 208 localEnv.info.lint = null; // leave this to be filled in by Attr, 209 // when annotations have been processed 210 localEnv.info.isAnonymousDiamond = TreeInfo.isDiamond(env.tree); 211 return localEnv; 212 } 213 214 /** Create a fresh environment for toplevels. 215 * @param tree The toplevel tree. 216 */ 217 Env<AttrContext> topLevelEnv(JCCompilationUnit tree) { 218 Env<AttrContext> localEnv = new Env<>(tree, new AttrContext()); 219 localEnv.toplevel = tree; 220 localEnv.enclClass = predefClassDef; 221 tree.toplevelScope = WriteableScope.create(tree.packge); 222 tree.namedImportScope = new NamedImportScope(tree.packge); 223 tree.starImportScope = new StarImportScope(tree.packge); 224 localEnv.info.scope = tree.toplevelScope; 225 localEnv.info.lint = lint; 226 return localEnv; 227 } 228 229 public Env<AttrContext> getTopLevelEnv(JCCompilationUnit tree) { 230 Env<AttrContext> localEnv = new Env<>(tree, new AttrContext()); 231 localEnv.toplevel = tree; 232 localEnv.enclClass = predefClassDef; 233 localEnv.info.scope = tree.toplevelScope; 234 localEnv.info.lint = lint; 235 return localEnv; 236 } 237 238 /** The scope in which a member definition in environment env is to be entered 239 * This is usually the environment's scope, except for class environments, 240 * where the local scope is for type variables, and the this and super symbol 241 * only, and members go into the class member scope. 242 */ 243 WriteableScope enterScope(Env<AttrContext> env) { 244 return (env.tree.hasTag(JCTree.Tag.CLASSDEF)) 245 ? ((JCClassDecl) env.tree).sym.members_field 246 : env.info.scope; 247 } 248 249 /** Create a fresh environment for modules. 250 * 251 * @param tree The module definition. 252 * @param env The environment current outside of the module definition. 253 */ 254 public Env<AttrContext> moduleEnv(JCModuleDecl tree, Env<AttrContext> env) { 255 Assert.checkNonNull(tree.sym); 256 Env<AttrContext> localEnv = 257 env.dup(tree, env.info.dup(WriteableScope.create(tree.sym))); 258 localEnv.enclClass = predefClassDef; 259 localEnv.outer = env; 260 localEnv.info.isSelfCall = false; 261 localEnv.info.lint = null; // leave this to be filled in by Attr, 262 // when annotations have been processed 263 return localEnv; 264 } 265 266 267 /* ************************************************************************ 268 * Visitor methods for phase 1: class enter 269 *************************************************************************/ 270 271 /** Visitor argument: the current environment. 272 */ 273 protected Env<AttrContext> env; 274 275 /** Visitor result: the computed type. 276 */ 277 Type result; 278 279 /** Visitor method: enter all classes in given tree, catching any 280 * completion failure exceptions. Return the tree's type. 281 * 282 * @param tree The tree to be visited. 283 * @param env The environment visitor argument. 284 */ 285 Type classEnter(JCTree tree, Env<AttrContext> env) { 286 Env<AttrContext> prevEnv = this.env; 287 try { 288 this.env = env; 289 annotate.blockAnnotations(); 290 tree.accept(this); 291 return result; 292 } catch (CompletionFailure ex) { 293 return chk.completionError(tree.pos(), ex); 294 } finally { 295 annotate.unblockAnnotations(); 296 this.env = prevEnv; 297 } 298 } 299 300 /** Visitor method: enter classes of a list of trees, returning a list of types. 301 */ 302 <T extends JCTree> List<Type> classEnter(List<T> trees, Env<AttrContext> env) { 303 ListBuffer<Type> ts = new ListBuffer<>(); 304 for (List<T> l = trees; l.nonEmpty(); l = l.tail) { 305 Type t = classEnter(l.head, env); 306 if (t != null) 307 ts.append(t); 308 } 309 return ts.toList(); 310 } 311 312 @Override 313 public void visitTopLevel(JCCompilationUnit tree) { 314 // Assert.checkNonNull(tree.modle, tree.sourcefile.toString()); 315 316 JavaFileObject prev = log.useSource(tree.sourcefile); 317 boolean addEnv = false; 318 boolean isPkgInfo = tree.sourcefile.isNameCompatible("package-info", 319 JavaFileObject.Kind.SOURCE); 320 if (TreeInfo.isModuleInfo(tree)) { 321 JCPackageDecl pd = tree.getPackage(); 322 if (pd != null) { 323 log.error(pd.pos(), Errors.NoPkgInModuleInfoJava); 324 } 325 tree.packge = syms.rootPackage; 326 Env<AttrContext> topEnv = topLevelEnv(tree); 327 classEnter(tree.defs, topEnv); 328 tree.modle.usesProvidesCompleter = modules.getUsesProvidesCompleter(); 329 } else { 330 JCPackageDecl pd = tree.getPackage(); 331 if (pd != null) { 332 tree.packge = pd.packge = syms.enterPackage(tree.modle, TreeInfo.fullName(pd.pid)); 333 setPackageSymbols.scan(pd); 334 if ( pd.annotations.nonEmpty() 335 || pkginfoOpt == PkgInfo.ALWAYS 336 || tree.docComments != null) { 337 if (isPkgInfo) { 338 addEnv = true; 339 } else if (pd.annotations.nonEmpty()) { 340 log.error(pd.annotations.head.pos(), 341 Errors.PkgAnnotationsSbInPackageInfoJava); 342 } 343 } 344 } else { 345 tree.packge = tree.modle.unnamedPackage; 346 } 347 348 Map<Name, PackageSymbol> visiblePackages = tree.modle.visiblePackages; 349 Optional<ModuleSymbol> dependencyWithPackage = 350 syms.listPackageModules(tree.packge.fullname) 351 .stream() 352 .filter(m -> m != tree.modle) 353 .filter(cand -> visiblePackages.get(tree.packge.fullname) == syms.getPackage(cand, tree.packge.fullname)) 354 .findAny(); 355 356 if (dependencyWithPackage.isPresent()) { 357 log.error(pd, Errors.PackageInOtherModule(dependencyWithPackage.get())); 358 } 359 360 tree.packge.complete(); // Find all classes in package. 361 362 Env<AttrContext> topEnv = topLevelEnv(tree); 363 Env<AttrContext> packageEnv = null; 364 365 // Save environment of package-info.java file. 366 if (isPkgInfo) { 367 packageEnv = topEnv.dup(pd != null ? pd : tree); 368 369 Env<AttrContext> env0 = typeEnvs.get(tree.packge); 370 if (env0 != null) { 371 JCCompilationUnit tree0 = env0.toplevel; 372 if (!fileManager.isSameFile(tree.sourcefile, tree0.sourcefile)) { 373 log.warning(pd != null ? pd.pid.pos() : null, 374 Warnings.PkgInfoAlreadySeen(tree.packge)); 375 } 376 } 377 typeEnvs.put(tree.packge, packageEnv); 378 379 for (Symbol q = tree.packge; q != null && q.kind == PCK; q = q.owner) 380 q.flags_field |= EXISTS; 381 382 Name name = names.package_info; 383 ClassSymbol c = syms.enterClass(tree.modle, name, tree.packge); 384 c.flatname = names.fromString(tree.packge + "." + name); 385 c.classfile = c.sourcefile = tree.sourcefile; 386 c.completer = Completer.NULL_COMPLETER; 387 c.members_field = WriteableScope.create(c); 388 tree.packge.package_info = c; 389 tree.packge.sourcefile = tree.sourcefile; 390 } 391 classEnter(tree.defs, topEnv); 392 if (addEnv) { 393 todo.append(packageEnv); 394 } 395 } 396 log.useSource(prev); 397 result = null; 398 } 399 //where: 400 //set package Symbols to the package expression: 401 private final TreeScanner setPackageSymbols = new TreeScanner() { 402 Symbol currentPackage; 403 404 @Override 405 public void visitIdent(JCIdent tree) { 406 tree.sym = currentPackage; 407 tree.type = currentPackage.type; 408 } 409 410 @Override 411 public void visitSelect(JCFieldAccess tree) { 412 tree.sym = currentPackage; 413 tree.type = currentPackage.type; 414 currentPackage = currentPackage.owner; 415 super.visitSelect(tree); 416 } 417 418 @Override 419 public void visitPackageDef(JCPackageDecl tree) { 420 currentPackage = tree.packge; 421 scan(tree.pid); 422 } 423 }; 424 425 @Override 426 public void visitClassDef(JCClassDecl tree) { 427 Symbol owner = env.info.scope.owner; 428 WriteableScope enclScope = enterScope(env); 429 ClassSymbol c; 430 if (owner.kind == PCK) { 431 // We are seeing a toplevel class. 432 PackageSymbol packge = (PackageSymbol)owner; 433 for (Symbol q = packge; q != null && q.kind == PCK; q = q.owner) 434 q.flags_field |= EXISTS; 435 c = syms.enterClass(env.toplevel.modle, tree.name, packge); 436 packge.members().enterIfAbsent(c); 437 if ((tree.mods.flags & PUBLIC) != 0 && !classNameMatchesFileName(c, env)) { 438 KindName topElement = KindName.CLASS; 439 if ((tree.mods.flags & ENUM) != 0) { 440 topElement = KindName.ENUM; 441 } else if ((tree.mods.flags & INTERFACE) != 0) { 442 topElement = KindName.INTERFACE; 443 } 444 log.error(tree.pos(), 445 Errors.ClassPublicShouldBeInFile(topElement, tree.name)); 446 } 447 } else { 448 if (!tree.name.isEmpty() && 449 !chk.checkUniqueClassName(tree.pos(), tree.name, enclScope)) { 450 result = null; 451 return; 452 } 453 if (owner.kind == TYP) { 454 // We are seeing a member class. 455 c = syms.enterClass(env.toplevel.modle, tree.name, (TypeSymbol)owner); 456 if (c.owner != owner) { 457 if (c.name != tree.name) { 458 log.error(tree.pos(), Errors.SameBinaryName(c.name, tree.name)); 459 result = types.createErrorType(tree.name, (TypeSymbol)owner, Type.noType); 460 tree.sym = (ClassSymbol)result.tsym; 461 return; 462 } 463 //anonymous class loaded from a classfile may be recreated from source (see below) 464 //if this class is a member of such an anonymous class, fix the owner: 465 Assert.check(owner.owner.kind != TYP, owner::toString); 466 Assert.check(c.owner.kind == TYP, () -> c.owner.toString()); 467 ClassSymbol cowner = (ClassSymbol) c.owner; 468 if (cowner.members_field != null) { 469 cowner.members_field.remove(c); 470 } 471 c.owner = owner; 472 } 473 if ((owner.flags_field & INTERFACE) != 0) { 474 tree.mods.flags |= PUBLIC | STATIC; 475 } 476 } else { 477 // We are seeing a local class. 478 c = syms.defineClass(tree.name, owner); 479 c.flatname = chk.localClassName(c); 480 if (!c.name.isEmpty()) 481 chk.checkTransparentClass(tree.pos(), c, env.info.scope); 482 } 483 } 484 tree.sym = c; 485 486 // Enter class into `compiled' table and enclosing scope. 487 if (chk.getCompiled(c) != null) { 488 duplicateClass(tree.pos(), c); 489 result = types.createErrorType(tree.name, (TypeSymbol)owner, Type.noType); 490 tree.sym = (ClassSymbol)result.tsym; 491 return; 492 } 493 chk.putCompiled(c); 494 enclScope.enter(c); 495 496 // Set up an environment for class block and store in `typeEnvs' 497 // table, to be retrieved later in memberEnter and attribution. 498 Env<AttrContext> localEnv = classEnv(tree, env); 499 typeEnvs.put(c, localEnv); 500 501 // Fill out class fields. 502 c.completer = Completer.NULL_COMPLETER; // do not allow the initial completer linger on. 503 c.flags_field = chk.checkFlags(tree.pos(), tree.mods.flags, c, tree) | FROM_SOURCE; 504 c.classfile = c.sourcefile = env.toplevel.sourcefile; 505 c.members_field = WriteableScope.create(c); 506 c.isPermittedExplicit = tree.permitting.nonEmpty(); 507 c.clearAnnotationMetadata(); 508 509 ClassType ct = (ClassType)c.type; 510 if (allowPrimitiveClasses) { 511 ct.flavor = ct.flavor.metamorphose((c.flags_field & PRIMITIVE_CLASS) != 0); 512 } 513 514 if (owner.kind != PCK && (c.flags_field & STATIC) == 0) { 515 // We are seeing a local or inner class. 516 // Set outer_field of this class to closest enclosing class 517 // which contains this class in a non-static context 518 // (its "enclosing instance class"), provided such a class exists. 519 Symbol owner1 = owner; 520 while (owner1.kind.matches(KindSelector.VAL_MTH) && 521 (owner1.flags_field & STATIC) == 0) { 522 owner1 = owner1.owner; 523 } 524 if (owner1.kind == TYP) { 525 ct.setEnclosingType(owner1.type); 526 } 527 } 528 529 // Enter type parameters. 530 ct.typarams_field = classEnter(tree.typarams, localEnv); 531 ct.allparams_field = null; 532 if (allowPrimitiveClasses && ct.isPrimitiveClass()) { 533 if (ct.projection != null) { 534 ct.projection.typarams_field = ct.typarams_field; 535 ct.projection.allparams_field = ct.allparams_field; 536 } 537 } 538 539 // install further completer for this type. 540 c.completer = typeEnter; 541 542 // Add non-local class to uncompleted, to make sure it will be 543 // completed later. 544 if (!c.isDirectlyOrIndirectlyLocal() && uncompleted != null) uncompleted.append(c); 545 // System.err.println("entering " + c.fullname + " in " + c.owner);//DEBUG 546 547 // Recursively enter all member classes. 548 classEnter(tree.defs, localEnv); 549 550 // Assert.checkNonNull(c.modle, c.sourcefile.toString()); 551 552 result = c.type; 553 } 554 //where 555 /** Does class have the same name as the file it appears in? 556 */ 557 private static boolean classNameMatchesFileName(ClassSymbol c, 558 Env<AttrContext> env) { 559 return env.toplevel.sourcefile.isNameCompatible(c.name.toString(), 560 JavaFileObject.Kind.SOURCE); 561 } 562 563 /** Complain about a duplicate class. */ 564 protected void duplicateClass(DiagnosticPosition pos, ClassSymbol c) { 565 log.error(pos, Errors.DuplicateClass(c.fullname)); 566 } 567 568 /** Class enter visitor method for type parameters. 569 * Enter a symbol for type parameter in local scope, after checking that it 570 * is unique. 571 */ 572 @Override 573 public void visitTypeParameter(JCTypeParameter tree) { 574 TypeVar a = (tree.type != null) 575 ? (TypeVar)tree.type 576 : new TypeVar(tree.name, env.info.scope.owner, syms.botType); 577 tree.type = a; 578 if (chk.checkUnique(tree.pos(), a.tsym, env.info.scope)) { 579 env.info.scope.enter(a.tsym); 580 } 581 result = a; 582 } 583 584 @Override 585 public void visitModuleDef(JCModuleDecl tree) { 586 Env<AttrContext> moduleEnv = moduleEnv(tree, env); 587 typeEnvs.put(tree.sym, moduleEnv); 588 if (modules.isInModuleGraph(tree.sym)) { 589 todo.append(moduleEnv); 590 } 591 } 592 593 /** Default class enter visitor method: do nothing. 594 */ 595 @Override 596 public void visitTree(JCTree tree) { 597 result = null; 598 } 599 600 /** Main method: enter all classes in a list of toplevel trees. 601 * @param trees The list of trees to be processed. 602 */ 603 public void main(List<JCCompilationUnit> trees) { 604 complete(trees, null); 605 } 606 607 /** Main method: enter classes from the list of toplevel trees, possibly 608 * skipping TypeEnter for all but 'c' by placing them on the uncompleted 609 * list. 610 * @param trees The list of trees to be processed. 611 * @param c The class symbol to be processed or null to process all. 612 */ 613 public void complete(List<JCCompilationUnit> trees, ClassSymbol c) { 614 annotate.blockAnnotations(); 615 ListBuffer<ClassSymbol> prevUncompleted = uncompleted; 616 if (typeEnter.completionEnabled) uncompleted = new ListBuffer<>(); 617 618 try { 619 // enter all classes, and construct uncompleted list 620 classEnter(trees, null); 621 622 // complete all uncompleted classes in memberEnter 623 if (typeEnter.completionEnabled) { 624 while (uncompleted.nonEmpty()) { 625 ClassSymbol clazz = uncompleted.next(); 626 if (c == null || c == clazz || prevUncompleted == null) 627 clazz.complete(); 628 else 629 // defer 630 prevUncompleted.append(clazz); 631 } 632 633 if (!modules.modulesInitialized()) { 634 for (JCCompilationUnit cut : trees) { 635 if (cut.getModuleDecl() != null) { 636 unfinishedModules.append(cut); 637 } else { 638 typeEnter.ensureImportsChecked(List.of(cut)); 639 } 640 } 641 } else { 642 typeEnter.ensureImportsChecked(unfinishedModules.toList()); 643 unfinishedModules.clear(); 644 typeEnter.ensureImportsChecked(trees); 645 } 646 } 647 } finally { 648 uncompleted = prevUncompleted; 649 annotate.unblockAnnotations(); 650 } 651 } 652 653 public void newRound() { 654 typeEnvs.clear(); 655 } 656 657 public void unenter(JCCompilationUnit topLevel, JCTree tree) { 658 new UnenterScanner(topLevel.modle).scan(tree); 659 } 660 class UnenterScanner extends TreeScanner { 661 private final ModuleSymbol msym; 662 663 public UnenterScanner(ModuleSymbol msym) { 664 this.msym = msym; 665 } 666 667 @Override 668 public void visitClassDef(JCClassDecl tree) { 669 ClassSymbol csym = tree.sym; 670 //if something went wrong during method applicability check 671 //it is possible that nested expressions inside argument expression 672 //are left unchecked - in such cases there's nothing to clean up. 673 if (csym == null) return; 674 typeEnvs.remove(csym); 675 chk.removeCompiled(csym); 676 chk.clearLocalClassNameIndexes(csym); 677 syms.removeClass(msym, csym.flatname); 678 super.visitClassDef(tree); 679 } 680 } 681 }