TypeEnter.java revision 3741:1fc501869aa8
190075Sobrien/* 2169689Skan * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved. 3169689Skan * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 490075Sobrien * 590075Sobrien * This code is free software; you can redistribute it and/or modify it 690075Sobrien * under the terms of the GNU General Public License version 2 only, as 790075Sobrien * published by the Free Software Foundation. Oracle designates this 890075Sobrien * particular file as subject to the "Classpath" exception as provided 990075Sobrien * by Oracle in the LICENSE file that accompanied this code. 1090075Sobrien * 1190075Sobrien * This code is distributed in the hope that it will be useful, but WITHOUT 1290075Sobrien * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1390075Sobrien * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1490075Sobrien * version 2 for more details (a copy is included in the LICENSE file that 1590075Sobrien * accompanied this code). 1690075Sobrien * 1790075Sobrien * You should have received a copy of the GNU General Public License version 1890075Sobrien * 2 along with this work; if not, write to the Free Software Foundation, 19169689Skan * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20169689Skan * 2190075Sobrien * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2290075Sobrien * or visit www.oracle.com if you need additional information or have any 2390075Sobrien * questions. 24132718Skan */ 25132718Skan 2690075Sobrienpackage com.sun.tools.javac.comp; 2790075Sobrien 2890075Sobrienimport java.util.HashSet; 2990075Sobrienimport java.util.Set; 30169689Skanimport java.util.function.BiConsumer; 3190075Sobrien 3290075Sobrienimport javax.tools.JavaFileObject; 3390075Sobrien 3490075Sobrienimport com.sun.tools.javac.code.*; 3590075Sobrienimport com.sun.tools.javac.code.Lint.LintCategory; 3690075Sobrienimport com.sun.tools.javac.code.Scope.ImportFilter; 3790075Sobrienimport com.sun.tools.javac.code.Scope.NamedImportScope; 3890075Sobrienimport com.sun.tools.javac.code.Scope.StarImportScope; 3990075Sobrienimport com.sun.tools.javac.code.Scope.WriteableScope; 40169689Skanimport com.sun.tools.javac.comp.Annotate.AnnotationTypeMetadata; 41169689Skanimport com.sun.tools.javac.tree.*; 4290075Sobrienimport com.sun.tools.javac.util.*; 4390075Sobrienimport com.sun.tools.javac.util.DefinedBy.Api; 4490075Sobrien 4590075Sobrienimport com.sun.tools.javac.code.Symbol.*; 4690075Sobrienimport com.sun.tools.javac.code.Type.*; 4790075Sobrienimport com.sun.tools.javac.tree.JCTree.*; 4890075Sobrien 4990075Sobrienimport static com.sun.tools.javac.code.Flags.*; 50169689Skanimport static com.sun.tools.javac.code.Flags.ANNOTATION; 5190075Sobrienimport static com.sun.tools.javac.code.Scope.LookupKind.NON_RECURSIVE; 5290075Sobrienimport static com.sun.tools.javac.code.Kinds.Kind.*; 5390075Sobrienimport static com.sun.tools.javac.code.TypeTag.CLASS; 5490075Sobrienimport static com.sun.tools.javac.code.TypeTag.ERROR; 5590075Sobrienimport static com.sun.tools.javac.tree.JCTree.Tag.*; 5690075Sobrien 5790075Sobrienimport com.sun.tools.javac.util.Dependencies.CompletionCause; 5890075Sobrienimport com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag; 5990075Sobrienimport com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition; 6090075Sobrien 6190075Sobrien/** This is the second phase of Enter, in which classes are completed 62169689Skan * by resolving their headers and entering their members in the into 63169689Skan * the class scope. See Enter for an overall overview. 64169689Skan * 65169689Skan * This class uses internal phases to process the classes. When a phase 66169689Skan * processes classes, the lower phases are not invoked until all classes 6790075Sobrien * pass through the current phase. Note that it is possible that upper phases 6890075Sobrien * are run due to recursive completion. The internal phases are: 6990075Sobrien * - ImportPhase: shallow pass through imports, adds information about imports 7090075Sobrien * the NamedImportScope and StarImportScope, but avoids queries 7190075Sobrien * about class hierarchy. 7290075Sobrien * - HierarchyPhase: resolves the supertypes of the given class. Does not handle 7390075Sobrien * type parameters of the class or type argument of the supertypes. 7490075Sobrien * - HeaderPhase: finishes analysis of the header of the given class by resolving 7590075Sobrien * type parameters, attributing supertypes including type arguments 76169689Skan * and scheduling full annotation attribution. This phase also adds 77169689Skan * a synthetic default constructor if needed and synthetic "this" field. 7890075Sobrien * - MembersPhase: resolves headers for fields, methods and constructors in the given class. 7990075Sobrien * Also generates synthetic enum members. 8090075Sobrien * 8190075Sobrien * <p><b>This is NOT part of any supported API. 82132718Skan * If you write code that depends on this, you do so at your own risk. 83132718Skan * This code and its internal interfaces are subject to change or 84132718Skan * deletion without notice.</b> 85132718Skan */ 86132718Skanpublic class TypeEnter implements Completer { 87132718Skan protected static final Context.Key<TypeEnter> typeEnterKey = new Context.Key<>(); 88132718Skan 89132718Skan /** A switch to determine whether we check for package/class conflicts 90132718Skan */ 91132718Skan final static boolean checkClash = true; 92132718Skan 93132718Skan private final Names names; 94132718Skan private final Enter enter; 9590075Sobrien private final MemberEnter memberEnter; 9690075Sobrien private final Log log; 9790075Sobrien private final Check chk; 9890075Sobrien private final Attr attr; 9990075Sobrien private final Symtab syms; 100132718Skan private final TreeMaker make; 10190075Sobrien private final Todo todo; 10290075Sobrien private final Annotate annotate; 10390075Sobrien private final TypeAnnotations typeAnnotations; 10490075Sobrien private final Types types; 105146895Skan private final JCDiagnostic.Factory diags; 106146895Skan private final DeferredLintHandler deferredLintHandler; 107146895Skan private final Lint lint; 108169689Skan private final TypeEnvs typeEnvs; 10990075Sobrien private final Dependencies dependencies; 11090075Sobrien 111169689Skan public static TypeEnter instance(Context context) { 11290075Sobrien TypeEnter instance = context.get(typeEnterKey); 11390075Sobrien if (instance == null) 114169689Skan instance = new TypeEnter(context); 11590075Sobrien return instance; 11690075Sobrien } 11790075Sobrien 11890075Sobrien protected TypeEnter(Context context) { 11990075Sobrien context.put(typeEnterKey, this); 12090075Sobrien names = Names.instance(context); 12190075Sobrien enter = Enter.instance(context); 12290075Sobrien memberEnter = MemberEnter.instance(context); 12390075Sobrien log = Log.instance(context); 124132718Skan chk = Check.instance(context); 12590075Sobrien attr = Attr.instance(context); 12690075Sobrien syms = Symtab.instance(context); 12790075Sobrien make = TreeMaker.instance(context); 12890075Sobrien todo = Todo.instance(context); 12990075Sobrien annotate = Annotate.instance(context); 13090075Sobrien typeAnnotations = TypeAnnotations.instance(context); 13190075Sobrien types = Types.instance(context); 132169689Skan diags = JCDiagnostic.Factory.instance(context); 13390075Sobrien deferredLintHandler = DeferredLintHandler.instance(context); 13490075Sobrien lint = Lint.instance(context); 135169689Skan typeEnvs = TypeEnvs.instance(context); 13690075Sobrien dependencies = Dependencies.instance(context); 13790075Sobrien Source source = Source.instance(context); 13890075Sobrien allowTypeAnnos = source.allowTypeAnnotations(); 13990075Sobrien allowDeprecationOnImport = source.allowDeprecationOnImport(); 14090075Sobrien } 14190075Sobrien 14290075Sobrien /** Switch: support type annotations. 14390075Sobrien */ 14490075Sobrien boolean allowTypeAnnos; 14590075Sobrien 146132718Skan /** 147132718Skan * Switch: should deprecation warnings be issued on import 14890075Sobrien */ 14990075Sobrien boolean allowDeprecationOnImport; 15090075Sobrien 15190075Sobrien /** A flag to disable completion from time to time during member 15290075Sobrien * enter, as we only need to look up types. This avoids 153169689Skan * unnecessarily deep recursion. 154132718Skan */ 15590075Sobrien boolean completionEnabled = true; 15690075Sobrien 15790075Sobrien /* Verify Imports: 15890075Sobrien */ 15990075Sobrien protected void ensureImportsChecked(List<JCCompilationUnit> trees) { 16090075Sobrien // if there remain any unimported toplevels (these must have 16190075Sobrien // no classes at all), process their import statements as well. 16290075Sobrien for (JCCompilationUnit tree : trees) { 16390075Sobrien if (tree.defs.nonEmpty() && tree.defs.head.hasTag(MODULEDEF)) 16490075Sobrien continue; 16590075Sobrien if (!tree.starImportScope.isFilled()) { 16690075Sobrien Env<AttrContext> topEnv = enter.topLevelEnv(tree); 16790075Sobrien finishImports(tree, () -> { completeClass.resolveImports(tree, topEnv); }); 16890075Sobrien } 169117395Skan } 17090075Sobrien } 17190075Sobrien 17290075Sobrien/* ******************************************************************** 17390075Sobrien * Source completer 17490075Sobrien *********************************************************************/ 17590075Sobrien 17690075Sobrien /** Complete entering a class. 17790075Sobrien * @param sym The symbol of the class to be completed. 17890075Sobrien */ 17990075Sobrien @Override 18090075Sobrien public void complete(Symbol sym) throws CompletionFailure { 18190075Sobrien // Suppress some (recursive) MemberEnter invocations 18290075Sobrien if (!completionEnabled) { 18390075Sobrien // Re-install same completer for next time around and return. 18490075Sobrien Assert.check((sym.flags() & Flags.COMPOUND) == 0); 18590075Sobrien sym.completer = this; 18690075Sobrien return; 18790075Sobrien } 188169689Skan 189132718Skan try { 19090075Sobrien annotate.blockAnnotations(); 19190075Sobrien sym.flags_field |= UNATTRIBUTED; 19290075Sobrien 193117395Skan List<Env<AttrContext>> queue; 19490075Sobrien 19590075Sobrien dependencies.push((ClassSymbol) sym, CompletionCause.MEMBER_ENTER); 19690075Sobrien try { 19790075Sobrien queue = completeClass.completeEnvs(List.of(typeEnvs.get((ClassSymbol) sym))); 19890075Sobrien } finally { 199132718Skan dependencies.pop(); 20090075Sobrien } 201117395Skan 20290075Sobrien if (!queue.isEmpty()) { 20390075Sobrien Set<JCCompilationUnit> seen = new HashSet<>(); 20490075Sobrien 20590075Sobrien for (Env<AttrContext> env : queue) { 20690075Sobrien if (env.toplevel.defs.contains(env.enclClass) && seen.add(env.toplevel)) { 20790075Sobrien finishImports(env.toplevel, () -> {}); 20890075Sobrien } 209169689Skan } 210169689Skan } 21190075Sobrien } finally { 21290075Sobrien annotate.unblockAnnotations(); 21390075Sobrien } 214169689Skan } 21590075Sobrien 21690075Sobrien void finishImports(JCCompilationUnit toplevel, Runnable resolve) { 21790075Sobrien JavaFileObject prev = log.useSource(toplevel.sourcefile); 21890075Sobrien try { 21990075Sobrien resolve.run(); 22090075Sobrien chk.checkImportsUnique(toplevel); 22190075Sobrien chk.checkImportsResolvable(toplevel); 222117395Skan chk.checkImportedPackagesObservable(toplevel); 223169689Skan toplevel.namedImportScope.finalizeScope(); 22490075Sobrien toplevel.starImportScope.finalizeScope(); 225117395Skan } finally { 22690075Sobrien log.useSource(prev); 227169689Skan } 22890075Sobrien } 22990075Sobrien 23090075Sobrien abstract class Phase { 23190075Sobrien private final ListBuffer<Env<AttrContext>> queue = new ListBuffer<>(); 23290075Sobrien private final Phase next; 23390075Sobrien private final CompletionCause phaseName; 23490075Sobrien 235132718Skan Phase(CompletionCause phaseName, Phase next) { 23690075Sobrien this.phaseName = phaseName; 23790075Sobrien this.next = next; 23890075Sobrien } 23990075Sobrien 24090075Sobrien public final List<Env<AttrContext>> completeEnvs(List<Env<AttrContext>> envs) { 24190075Sobrien boolean firstToComplete = queue.isEmpty(); 24290075Sobrien 24390075Sobrien Phase prevTopLevelPhase = topLevelPhase; 244117395Skan 245132718Skan try { 246132718Skan topLevelPhase = this; 24790075Sobrien doCompleteEnvs(envs); 24890075Sobrien } finally { 24990075Sobrien topLevelPhase = prevTopLevelPhase; 25090075Sobrien } 25190075Sobrien 25290075Sobrien if (firstToComplete) { 25390075Sobrien List<Env<AttrContext>> out = queue.toList(); 25490075Sobrien 25590075Sobrien queue.clear(); 25690075Sobrien return next != null ? next.completeEnvs(out) : out; 25790075Sobrien } else { 25890075Sobrien return List.nil(); 25990075Sobrien } 26090075Sobrien } 26190075Sobrien 26290075Sobrien protected void doCompleteEnvs(List<Env<AttrContext>> envs) { 26390075Sobrien for (Env<AttrContext> env : envs) { 26490075Sobrien JCClassDecl tree = (JCClassDecl)env.tree; 26590075Sobrien 26690075Sobrien queue.add(env); 26790075Sobrien 26890075Sobrien JavaFileObject prev = log.useSource(env.toplevel.sourcefile); 26990075Sobrien DiagnosticPosition prevLintPos = deferredLintHandler.setPos(tree.pos()); 27090075Sobrien try { 27190075Sobrien dependencies.push(env.enclClass.sym, phaseName); 27290075Sobrien runPhase(env); 27390075Sobrien } catch (CompletionFailure ex) { 27490075Sobrien chk.completionError(tree.pos(), ex); 275169689Skan } finally { 27690075Sobrien dependencies.pop(); 27790075Sobrien deferredLintHandler.setPos(prevLintPos); 27890075Sobrien log.useSource(prev); 27990075Sobrien } 28090075Sobrien } 281169689Skan } 28290075Sobrien 28390075Sobrien protected abstract void runPhase(Env<AttrContext> env); 28490075Sobrien } 28590075Sobrien 28690075Sobrien private final ImportsPhase completeClass = new ImportsPhase(); 28790075Sobrien private Phase topLevelPhase; 28890075Sobrien 28990075Sobrien /**Analyze import clauses. 29090075Sobrien */ 29190075Sobrien private final class ImportsPhase extends Phase { 292169689Skan 29390075Sobrien public ImportsPhase() { 29490075Sobrien super(CompletionCause.IMPORTS_PHASE, new HierarchyPhase()); 29590075Sobrien } 29690075Sobrien 29790075Sobrien Env<AttrContext> env; 29890075Sobrien ImportFilter staticImportFilter; 29990075Sobrien ImportFilter typeImportFilter; 30090075Sobrien BiConsumer<JCImport, CompletionFailure> cfHandler = 30190075Sobrien (imp, cf) -> chk.completionError(imp.pos(), cf); 302117395Skan 30390075Sobrien @Override 304117395Skan protected void runPhase(Env<AttrContext> env) { 30590075Sobrien JCClassDecl tree = env.enclClass; 30690075Sobrien ClassSymbol sym = tree.sym; 30790075Sobrien 30890075Sobrien // If sym is a toplevel-class, make sure any import 30990075Sobrien // clauses in its source file have been seen. 31090075Sobrien if (sym.owner.kind == PCK) { 31190075Sobrien resolveImports(env.toplevel, env.enclosing(TOPLEVEL)); 31290075Sobrien todo.append(env); 31390075Sobrien } 31490075Sobrien 31590075Sobrien if (sym.owner.kind == TYP) 31690075Sobrien sym.owner.complete(); 31790075Sobrien } 31896263Sobrien 31996263Sobrien private void resolveImports(JCCompilationUnit tree, Env<AttrContext> env) { 32096263Sobrien if (tree.starImportScope.isFilled()) { 32196263Sobrien // we must have already processed this toplevel 32296263Sobrien return; 32396263Sobrien } 32490075Sobrien 32590075Sobrien ImportFilter prevStaticImportFilter = staticImportFilter; 32690075Sobrien ImportFilter prevTypeImportFilter = typeImportFilter; 327132718Skan DiagnosticPosition prevLintPos = deferredLintHandler.immediate(); 32890075Sobrien Lint prevLint = chk.setLint(lint); 32990075Sobrien Env<AttrContext> prevEnv = this.env; 33090075Sobrien try { 33190075Sobrien this.env = env; 332169689Skan final PackageSymbol packge = env.toplevel.packge; 33390075Sobrien this.staticImportFilter = 334169689Skan (origin, sym) -> sym.isStatic() && 33590075Sobrien chk.importAccessible(sym, packge) && 33690075Sobrien sym.isMemberOf((TypeSymbol) origin.owner, types); 337169689Skan this.typeImportFilter = 338117395Skan (origin, sym) -> sym.kind == TYP && 33990075Sobrien chk.importAccessible(sym, packge); 340132718Skan 34190075Sobrien // Import-on-demand java.lang. 342132718Skan PackageSymbol javaLang = syms.enterPackage(syms.java_base, names.java_lang); 343169689Skan if (javaLang.members().isEmpty() && !javaLang.exists()) 344169689Skan throw new FatalError(diags.fragment("fatal.err.no.java.lang")); 34590075Sobrien importAll(make.at(tree.pos()).Import(make.QualIdent(javaLang), false), javaLang, env); 34690075Sobrien 34790075Sobrien // Process the package def and all import clauses. 34890075Sobrien if (tree.getPackage() != null) 349132718Skan checkClassPackageClash(tree.getPackage()); 350169689Skan 35190075Sobrien for (JCImport imp : tree.getImports()) { 352169689Skan doImport(imp); 353169689Skan } 35490075Sobrien } finally { 35590075Sobrien this.env = prevEnv; 35690075Sobrien chk.setLint(prevLint); 35790075Sobrien deferredLintHandler.setPos(prevLintPos); 35890075Sobrien this.staticImportFilter = prevStaticImportFilter; 35990075Sobrien this.typeImportFilter = prevTypeImportFilter; 36090075Sobrien } 361169689Skan } 362169689Skan 36390075Sobrien private void checkClassPackageClash(JCPackageDecl tree) { 36490075Sobrien // check that no class exists with same fully qualified name as 36590075Sobrien // toplevel package 366169689Skan if (checkClash && tree.pid != null) { 36790075Sobrien Symbol p = env.toplevel.packge; 36890075Sobrien while (p.owner != syms.rootPackage) { 36990075Sobrien p.owner.complete(); // enter all class members of p 370132718Skan //need to lookup the owning module/package: 37190075Sobrien PackageSymbol pack = syms.lookupPackage(env.toplevel.modle, p.owner.getQualifiedName()); 37290075Sobrien if (syms.getClass(pack.modle, p.getQualifiedName()) != null) { 37390075Sobrien log.error(tree.pos, 37490075Sobrien "pkg.clashes.with.class.of.same.name", 375132718Skan p); 376132718Skan } 37790075Sobrien p = p.owner; 37890075Sobrien } 37990075Sobrien } 380132718Skan // process package annotations 38190075Sobrien annotate.annotateLater(tree.annotations, env, env.toplevel.packge, null); 38290075Sobrien } 38390075Sobrien 38490075Sobrien private void doImport(JCImport tree) { 38590075Sobrien JCFieldAccess imp = (JCFieldAccess)tree.qualid; 38690075Sobrien Name name = TreeInfo.name(imp); 38790075Sobrien 38890075Sobrien // Create a local environment pointing to this tree to disable 38990075Sobrien // effects of other imports in Resolve.findGlobalType 390169689Skan Env<AttrContext> localEnv = env.dup(tree); 391132718Skan 39290075Sobrien TypeSymbol p = attr.attribImportQualifier(tree, localEnv).tsym; 39390075Sobrien if (name == names.asterisk) { 39490075Sobrien // Import on demand. 39590075Sobrien chk.checkCanonical(imp.selected); 39690075Sobrien if (tree.staticImport) 397169689Skan importStaticAll(tree, p, env); 39890075Sobrien else 39990075Sobrien importAll(tree, p, env); 40090075Sobrien } else { 40190075Sobrien // Named type import. 40290075Sobrien if (tree.staticImport) { 403132718Skan importNamedStatic(tree, p, name, localEnv); 404132718Skan chk.checkCanonical(imp.selected); 40590075Sobrien } else { 40690075Sobrien TypeSymbol c = attribImportType(imp, localEnv).tsym; 40790075Sobrien chk.checkCanonical(imp); 40890075Sobrien importNamed(tree.pos(), c, env, tree); 409169689Skan } 41090075Sobrien } 41190075Sobrien } 41290075Sobrien 41390075Sobrien Type attribImportType(JCTree tree, Env<AttrContext> env) { 41490075Sobrien Assert.check(completionEnabled); 41590075Sobrien Lint prevLint = chk.setLint(allowDeprecationOnImport ? 41690075Sobrien lint : lint.suppress(LintCategory.DEPRECATION, LintCategory.REMOVAL)); 417169689Skan try { 41890075Sobrien // To prevent deep recursion, suppress completion of some 41990075Sobrien // types. 42090075Sobrien completionEnabled = false; 42190075Sobrien return attr.attribType(tree, env); 42290075Sobrien } finally { 42390075Sobrien completionEnabled = true; 42490075Sobrien chk.setLint(prevLint); 42590075Sobrien } 42690075Sobrien } 42790075Sobrien 42890075Sobrien /** Import all classes of a class or package on demand. 42990075Sobrien * @param imp The import that is being handled. 43090075Sobrien * @param tsym The class or package the members of which are imported. 43190075Sobrien * @param env The env in which the imported classes will be entered. 43290075Sobrien */ 43390075Sobrien private void importAll(JCImport imp, 434117395Skan final TypeSymbol tsym, 43590075Sobrien Env<AttrContext> env) { 436169689Skan env.toplevel.starImportScope.importAll(types, tsym.members(), typeImportFilter, imp, cfHandler); 43790075Sobrien } 43890075Sobrien 43990075Sobrien /** Import all static members of a class or package on demand. 44090075Sobrien * @param imp The import that is being handled. 44190075Sobrien * @param tsym The class or package the members of which are imported. 44290075Sobrien * @param env The env in which the imported classes will be entered. 44390075Sobrien */ 44490075Sobrien private void importStaticAll(JCImport imp, 44590075Sobrien final TypeSymbol tsym, 446169689Skan Env<AttrContext> env) { 44790075Sobrien final StarImportScope toScope = env.toplevel.starImportScope; 448169689Skan final TypeSymbol origin = tsym; 44990075Sobrien 450117395Skan toScope.importAll(types, origin.members(), staticImportFilter, imp, cfHandler); 45190075Sobrien } 45290075Sobrien 45390075Sobrien /** Import statics types of a given name. Non-types are handled in Attr. 454169689Skan * @param imp The import that is being handled. 45590075Sobrien * @param tsym The class from which the name is imported. 456132718Skan * @param name The (simple) name being imported. 45790075Sobrien * @param env The environment containing the named import 45890075Sobrien * scope to add to. 45990075Sobrien */ 46090075Sobrien private void importNamedStatic(final JCImport imp, 461169689Skan final TypeSymbol tsym, 46290075Sobrien final Name name, 46390075Sobrien final Env<AttrContext> env) { 46490075Sobrien if (tsym.kind != TYP) { 46590075Sobrien log.error(DiagnosticFlag.RECOVERABLE, imp.pos(), "static.imp.only.classes.and.interfaces"); 46690075Sobrien return; 46790075Sobrien } 46890075Sobrien 46990075Sobrien final NamedImportScope toScope = env.toplevel.namedImportScope; 47090075Sobrien final Scope originMembers = tsym.members(); 47190075Sobrien 47290075Sobrien imp.importScope = toScope.importByName(types, originMembers, name, staticImportFilter, imp, cfHandler); 47390075Sobrien } 47490075Sobrien 47590075Sobrien /** Import given class. 47690075Sobrien * @param pos Position to be used for error reporting. 47790075Sobrien * @param tsym The class to be imported. 47890075Sobrien * @param env The environment containing the named import 47990075Sobrien * scope to add to. 48090075Sobrien */ 48190075Sobrien private void importNamed(DiagnosticPosition pos, final Symbol tsym, Env<AttrContext> env, JCImport imp) { 48290075Sobrien if (tsym.kind == TYP) 483169689Skan imp.importScope = env.toplevel.namedImportScope.importType(tsym.owner.members(), tsym.owner.members(), tsym); 484169689Skan } 48590075Sobrien 48690075Sobrien } 48790075Sobrien 48890075Sobrien /**Defines common utility methods used by the HierarchyPhase and HeaderPhase. 48990075Sobrien */ 49090075Sobrien private abstract class AbstractHeaderPhase extends Phase { 491169689Skan 492169689Skan public AbstractHeaderPhase(CompletionCause phaseName, Phase next) { 49390075Sobrien super(phaseName, next); 49490075Sobrien } 49590075Sobrien 49690075Sobrien protected Env<AttrContext> baseEnv(JCClassDecl tree, Env<AttrContext> env) { 49790075Sobrien WriteableScope baseScope = WriteableScope.create(tree.sym); 49890075Sobrien //import already entered local classes into base scope 49990075Sobrien for (Symbol sym : env.outer.info.scope.getSymbols(NON_RECURSIVE)) { 50090075Sobrien if (sym.isLocal()) { 50190075Sobrien baseScope.enter(sym); 50290075Sobrien } 50390075Sobrien } 50490075Sobrien //import current type-parameters into base scope 505169689Skan if (tree.typarams != null) 50690075Sobrien for (List<JCTypeParameter> typarams = tree.typarams; 50790075Sobrien typarams.nonEmpty(); 50890075Sobrien typarams = typarams.tail) 509169689Skan baseScope.enter(typarams.head.type.tsym); 510132718Skan Env<AttrContext> outer = env.outer; // the base clause can't see members of this class 51190075Sobrien Env<AttrContext> localEnv = outer.dup(tree, outer.info.dup(baseScope)); 51290075Sobrien localEnv.baseClause = true; 51390075Sobrien localEnv.outer = outer; 51490075Sobrien localEnv.info.isSelfCall = false; 51590075Sobrien return localEnv; 51690075Sobrien } 517169689Skan 51890075Sobrien /** Generate a base clause for an enum type. 51990075Sobrien * @param pos The position for trees and diagnostics, if any 52090075Sobrien * @param c The class symbol of the enum 52190075Sobrien */ 52290075Sobrien protected JCExpression enumBase(int pos, ClassSymbol c) { 52390075Sobrien JCExpression result = make.at(pos). 52490075Sobrien TypeApply(make.QualIdent(syms.enumSym), 52590075Sobrien List.<JCExpression>of(make.Type(c.type))); 52690075Sobrien return result; 52790075Sobrien } 52890075Sobrien 52990075Sobrien protected Type modelMissingTypes(Env<AttrContext> env, Type t, final JCExpression tree, final boolean interfaceExpected) { 53090075Sobrien if (!t.hasTag(ERROR)) 53190075Sobrien return t; 532169689Skan 53390075Sobrien return new ErrorType(t.getOriginalType(), t.tsym) { 53490075Sobrien private Type modelType; 53590075Sobrien 53690075Sobrien @Override 53790075Sobrien public Type getModelType() { 53890075Sobrien if (modelType == null) 53990075Sobrien modelType = new Synthesizer(env.toplevel.modle, getOriginalType(), interfaceExpected).visit(tree); 54090075Sobrien return modelType; 54190075Sobrien } 54290075Sobrien }; 54390075Sobrien } 54490075Sobrien // where: 54590075Sobrien private class Synthesizer extends JCTree.Visitor { 54690075Sobrien ModuleSymbol msym; 54790075Sobrien Type originalType; 54890075Sobrien boolean interfaceExpected; 54990075Sobrien List<ClassSymbol> synthesizedSymbols = List.nil(); 55090075Sobrien Type result; 551169689Skan 55290075Sobrien Synthesizer(ModuleSymbol msym, Type originalType, boolean interfaceExpected) { 55390075Sobrien this.msym = msym; 55490075Sobrien this.originalType = originalType; 55590075Sobrien this.interfaceExpected = interfaceExpected; 55690075Sobrien } 55790075Sobrien 558169689Skan Type visit(JCTree tree) { 55990075Sobrien tree.accept(this); 56090075Sobrien return result; 56190075Sobrien } 562169689Skan 563169689Skan List<Type> visit(List<? extends JCTree> trees) { 564169689Skan ListBuffer<Type> lb = new ListBuffer<>(); 565169689Skan for (JCTree t: trees) 56690075Sobrien lb.append(visit(t)); 56790075Sobrien return lb.toList(); 568169689Skan } 569169689Skan 570169689Skan @Override 571169689Skan public void visitTree(JCTree tree) { 57290075Sobrien result = syms.errType; 57390075Sobrien } 57490075Sobrien 575169689Skan @Override 57690075Sobrien public void visitIdent(JCIdent tree) { 577169689Skan if (!tree.type.hasTag(ERROR)) { 578169689Skan result = tree.type; 57990075Sobrien } else { 580169689Skan result = synthesizeClass(tree.name, msym.unnamedPackage).type; 581169689Skan } 58290075Sobrien } 583169689Skan 58490075Sobrien @Override 585169689Skan public void visitSelect(JCFieldAccess tree) { 58690075Sobrien if (!tree.type.hasTag(ERROR)) { 587169689Skan result = tree.type; 58890075Sobrien } else { 58990075Sobrien Type selectedType; 59090075Sobrien boolean prev = interfaceExpected; 59190075Sobrien try { 59290075Sobrien interfaceExpected = false; 59390075Sobrien selectedType = visit(tree.selected); 594169689Skan } finally { 59590075Sobrien interfaceExpected = prev; 59690075Sobrien } 59790075Sobrien ClassSymbol c = synthesizeClass(tree.name, selectedType.tsym); 59890075Sobrien result = c.type; 59990075Sobrien } 600169689Skan } 60190075Sobrien 60290075Sobrien @Override 60390075Sobrien public void visitTypeApply(JCTypeApply tree) { 60490075Sobrien if (!tree.type.hasTag(ERROR)) { 60590075Sobrien result = tree.type; 606169689Skan } else { 60790075Sobrien ClassType clazzType = (ClassType) visit(tree.clazz); 60890075Sobrien if (synthesizedSymbols.contains(clazzType.tsym)) 60990075Sobrien synthesizeTyparams((ClassSymbol) clazzType.tsym, tree.arguments.size()); 61090075Sobrien final List<Type> actuals = visit(tree.arguments); 61190075Sobrien result = new ErrorType(tree.type, clazzType.tsym) { 612169689Skan @Override @DefinedBy(Api.LANGUAGE_MODEL) 613169689Skan public List<Type> getTypeArguments() { 614169689Skan return actuals; 61590075Sobrien } 61690075Sobrien }; 61790075Sobrien } 61890075Sobrien } 61990075Sobrien 62090075Sobrien ClassSymbol synthesizeClass(Name name, Symbol owner) { 62190075Sobrien int flags = interfaceExpected ? INTERFACE : 0; 62290075Sobrien ClassSymbol c = new ClassSymbol(flags, name, owner); 62390075Sobrien c.members_field = new Scope.ErrorScope(c); 62490075Sobrien c.type = new ErrorType(originalType, c) { 62590075Sobrien @Override @DefinedBy(Api.LANGUAGE_MODEL) 62690075Sobrien public List<Type> getTypeArguments() { 62790075Sobrien return typarams_field; 62890075Sobrien } 62990075Sobrien }; 63090075Sobrien synthesizedSymbols = synthesizedSymbols.prepend(c); 63190075Sobrien return c; 63290075Sobrien } 633169689Skan 63490075Sobrien void synthesizeTyparams(ClassSymbol sym, int n) { 63590075Sobrien ClassType ct = (ClassType) sym.type; 63690075Sobrien Assert.check(ct.typarams_field.isEmpty()); 63790075Sobrien if (n == 1) { 638169689Skan TypeVar v = new TypeVar(names.fromString("T"), sym, syms.botType); 63990075Sobrien ct.typarams_field = ct.typarams_field.prepend(v); 64090075Sobrien } else { 64190075Sobrien for (int i = n; i > 0; i--) { 64290075Sobrien TypeVar v = new TypeVar(names.fromString("T" + i), sym, 64390075Sobrien syms.botType); 64490075Sobrien ct.typarams_field = ct.typarams_field.prepend(v); 64590075Sobrien } 64690075Sobrien } 64790075Sobrien } 64890075Sobrien } 649169689Skan 65090075Sobrien protected void attribSuperTypes(Env<AttrContext> env, Env<AttrContext> baseEnv) { 65190075Sobrien JCClassDecl tree = env.enclClass; 652169689Skan ClassSymbol sym = tree.sym; 65390075Sobrien ClassType ct = (ClassType)sym.type; 65490075Sobrien // Determine supertype. 65590075Sobrien Type supertype; 65690075Sobrien JCExpression extending; 657169689Skan 658132718Skan if (tree.extending != null) { 65990075Sobrien extending = clearTypeParams(tree.extending); 66090075Sobrien supertype = attr.attribBase(extending, baseEnv, true, false, true); 66190075Sobrien } else { 66290075Sobrien extending = null; 66390075Sobrien supertype = ((tree.mods.flags & Flags.ENUM) != 0) 66490075Sobrien ? attr.attribBase(enumBase(tree.pos, sym), baseEnv, 66590075Sobrien true, false, false) 66690075Sobrien : (sym.fullname == names.java_lang_Object) 66790075Sobrien ? Type.noType 66890075Sobrien : syms.objectType; 66990075Sobrien } 67090075Sobrien ct.supertype_field = modelMissingTypes(baseEnv, supertype, extending, false); 67196263Sobrien 67290075Sobrien // Determine interfaces. 67390075Sobrien ListBuffer<Type> interfaces = new ListBuffer<>(); 67490075Sobrien ListBuffer<Type> all_interfaces = null; // lazy init 67590075Sobrien List<JCExpression> interfaceTrees = tree.implementing; 67690075Sobrien for (JCExpression iface : interfaceTrees) { 67790075Sobrien iface = clearTypeParams(iface); 67890075Sobrien Type it = attr.attribBase(iface, baseEnv, false, true, true); 679169689Skan if (it.hasTag(CLASS)) { 68090075Sobrien interfaces.append(it); 68190075Sobrien if (all_interfaces != null) all_interfaces.append(it); 68290075Sobrien } else { 68390075Sobrien if (all_interfaces == null) 684169689Skan all_interfaces = new ListBuffer<Type>().appendList(interfaces); 68590075Sobrien all_interfaces.append(modelMissingTypes(baseEnv, it, iface, true)); 68690075Sobrien } 68790075Sobrien } 68890075Sobrien 689169689Skan if ((sym.flags_field & ANNOTATION) != 0) { 690169689Skan ct.interfaces_field = List.of(syms.annotationType); 691161651Skan ct.all_interfaces_field = ct.interfaces_field; 69290075Sobrien } else { 69390075Sobrien ct.interfaces_field = interfaces.toList(); 69490075Sobrien ct.all_interfaces_field = (all_interfaces == null) 695169689Skan ? ct.interfaces_field : all_interfaces.toList(); 69690075Sobrien } 69790075Sobrien } 69890075Sobrien //where: 699117395Skan protected JCExpression clearTypeParams(JCExpression superType) { 700169689Skan return superType; 70190075Sobrien } 702169689Skan } 703169689Skan 70490075Sobrien private final class HierarchyPhase extends AbstractHeaderPhase implements Completer { 70590075Sobrien 70690075Sobrien public HierarchyPhase() { 70790075Sobrien super(CompletionCause.HIERARCHY_PHASE, new HeaderPhase()); 70890075Sobrien } 70990075Sobrien 71090075Sobrien @Override 71190075Sobrien protected void doCompleteEnvs(List<Env<AttrContext>> envs) { 71290075Sobrien //The ClassSymbols in the envs list may not be in the dependency order. 713169689Skan //To get proper results, for every class or interface C, the supertypes of 71490075Sobrien //C must be processed by the HierarchyPhase phase before C. 71590075Sobrien //To achieve that, the HierarchyPhase is registered as the Completer for 716169689Skan //all the classes first, and then all the classes are completed. 717169689Skan for (Env<AttrContext> env : envs) { 71890075Sobrien env.enclClass.sym.completer = this; 71990075Sobrien } 72090075Sobrien for (Env<AttrContext> env : envs) { 721169689Skan env.enclClass.sym.complete(); 72290075Sobrien } 723169689Skan } 72490075Sobrien 72590075Sobrien @Override 72690075Sobrien protected void runPhase(Env<AttrContext> env) { 72790075Sobrien JCClassDecl tree = env.enclClass; 72890075Sobrien ClassSymbol sym = tree.sym; 72990075Sobrien ClassType ct = (ClassType)sym.type; 73090075Sobrien 73190075Sobrien Env<AttrContext> baseEnv = baseEnv(tree, env); 73290075Sobrien 73390075Sobrien attribSuperTypes(env, baseEnv); 734169689Skan 73590075Sobrien if (sym.fullname == names.java_lang_Object) { 73690075Sobrien if (tree.extending != null) { 737169689Skan chk.checkNonCyclic(tree.extending.pos(), 73890075Sobrien ct.supertype_field); 73990075Sobrien ct.supertype_field = Type.noType; 74090075Sobrien } 741117395Skan else if (tree.implementing.nonEmpty()) { 74290075Sobrien chk.checkNonCyclic(tree.implementing.head.pos(), 74390075Sobrien ct.interfaces_field.head); 744132718Skan ct.interfaces_field = List.nil(); 74590075Sobrien } 74690075Sobrien } 74790075Sobrien 74890075Sobrien // Annotations. 74990075Sobrien // In general, we cannot fully process annotations yet, but we 750132718Skan // can attribute the annotation types and then check to see if the 75190075Sobrien // @Deprecated annotation is present. 75290075Sobrien attr.attribAnnotationTypes(tree.mods.annotations, baseEnv); 75390075Sobrien handleDeprecatedAnnotation(tree.mods.annotations, sym); 75490075Sobrien 75590075Sobrien chk.checkNonCyclicDecl(tree); 75690075Sobrien } 75790075Sobrien //where: 75896263Sobrien @Override 75990075Sobrien protected JCExpression clearTypeParams(JCExpression superType) { 76090075Sobrien switch (superType.getTag()) { 76190075Sobrien case TYPEAPPLY: 76290075Sobrien return ((JCTypeApply) superType).clazz; 76390075Sobrien } 76490075Sobrien 76590075Sobrien return superType; 76690075Sobrien } 76790075Sobrien 76890075Sobrien /** 76990075Sobrien * If a list of annotations contains a reference to java.lang.Deprecated, 77090075Sobrien * set the DEPRECATED flag. 77190075Sobrien * If the annotation is marked forRemoval=true, also set DEPRECATED_REMOVAL. 77290075Sobrien **/ 77390075Sobrien private void handleDeprecatedAnnotation(List<JCAnnotation> annotations, Symbol sym) { 77490075Sobrien for (List<JCAnnotation> al = annotations; !al.isEmpty(); al = al.tail) { 77590075Sobrien JCAnnotation a = al.head; 77690075Sobrien if (a.annotationType.type == syms.deprecatedType) { 77790075Sobrien sym.flags_field |= Flags.DEPRECATED; 77896263Sobrien a.args.stream() 77990075Sobrien .filter(e -> e.hasTag(ASSIGN)) 780117395Skan .map(e -> (JCAssign) e) 781117395Skan .filter(assign -> TreeInfo.name(assign.lhs) == names.forRemoval) 78290075Sobrien .findFirst() 78390075Sobrien .ifPresent(assign -> { 78490075Sobrien JCExpression rhs = TreeInfo.skipParens(assign.rhs); 78590075Sobrien if (rhs.hasTag(LITERAL) 78690075Sobrien && Boolean.TRUE.equals(((JCLiteral) rhs).getValue())) { 78790075Sobrien sym.flags_field |= DEPRECATED_REMOVAL; 78890075Sobrien } 78990075Sobrien }); 79090075Sobrien } 79190075Sobrien } 79290075Sobrien } 79390075Sobrien 79490075Sobrien @Override 795169689Skan public void complete(Symbol sym) throws CompletionFailure { 79690075Sobrien Assert.check((topLevelPhase instanceof ImportsPhase) || 79790075Sobrien (topLevelPhase == this)); 79890075Sobrien 79990075Sobrien if (topLevelPhase != this) { 80090075Sobrien //only do the processing based on dependencies in the HierarchyPhase: 80190075Sobrien sym.completer = this; 80290075Sobrien return ; 80390075Sobrien } 80490075Sobrien 80590075Sobrien Env<AttrContext> env = typeEnvs.get((ClassSymbol) sym); 80690075Sobrien 80790075Sobrien super.doCompleteEnvs(List.of(env)); 808117395Skan } 80990075Sobrien 81090075Sobrien } 81190075Sobrien 81290075Sobrien private final class HeaderPhase extends AbstractHeaderPhase { 81390075Sobrien 81490075Sobrien public HeaderPhase() { 815117395Skan super(CompletionCause.HEADER_PHASE, new MembersPhase()); 81690075Sobrien } 81790075Sobrien 81890075Sobrien @Override 81990075Sobrien protected void runPhase(Env<AttrContext> env) { 82090075Sobrien JCClassDecl tree = env.enclClass; 82190075Sobrien ClassSymbol sym = tree.sym; 82290075Sobrien ClassType ct = (ClassType)sym.type; 82396263Sobrien 82496263Sobrien // create an environment for evaluating the base clauses 82590075Sobrien Env<AttrContext> baseEnv = baseEnv(tree, env); 82690075Sobrien 82796263Sobrien if (tree.extending != null) 82896263Sobrien annotate.queueScanTreeAndTypeAnnotate(tree.extending, baseEnv, sym, tree.pos()); 82996263Sobrien for (JCExpression impl : tree.implementing) 83096263Sobrien annotate.queueScanTreeAndTypeAnnotate(impl, baseEnv, sym, tree.pos()); 83196263Sobrien annotate.flush(); 83296263Sobrien 83390075Sobrien attribSuperTypes(env, baseEnv); 83490075Sobrien 83590075Sobrien Set<Type> interfaceSet = new HashSet<>(); 83690075Sobrien 83790075Sobrien for (JCExpression iface : tree.implementing) { 83890075Sobrien Type it = iface.type; 83990075Sobrien if (it.hasTag(CLASS)) 84090075Sobrien chk.checkNotRepeated(iface.pos(), types.erasure(it), interfaceSet); 84190075Sobrien } 84290075Sobrien 84390075Sobrien annotate.annotateLater(tree.mods.annotations, baseEnv, 844169689Skan sym, tree.pos()); 84590075Sobrien 84690075Sobrien attr.attribTypeVariables(tree.typarams, baseEnv); 84790075Sobrien for (JCTypeParameter tp : tree.typarams) 84890075Sobrien annotate.queueScanTreeAndTypeAnnotate(tp, baseEnv, sym, tree.pos()); 84990075Sobrien 85090075Sobrien // check that no package exists with same fully qualified name, 85190075Sobrien // but admit classes in the unnamed package which have the same 85290075Sobrien // name as a top-level package. 85390075Sobrien if (checkClash && 85490075Sobrien sym.owner.kind == PCK && sym.owner != env.toplevel.modle.unnamedPackage && 85590075Sobrien syms.packageExists(env.toplevel.modle, sym.fullname)) { 856169689Skan log.error(tree.pos, "clash.with.pkg.of.same.name", Kinds.kindName(sym), sym); 85790075Sobrien } 85890075Sobrien if (sym.owner.kind == PCK && (sym.flags_field & PUBLIC) == 0 && 85990075Sobrien !env.toplevel.sourcefile.isNameCompatible(sym.name.toString(),JavaFileObject.Kind.SOURCE)) { 86090075Sobrien sym.flags_field |= AUXILIARY; 86190075Sobrien } 86290075Sobrien } 86390075Sobrien } 86490075Sobrien 86590075Sobrien /** Enter member fields and methods of a class 86690075Sobrien */ 86790075Sobrien private final class MembersPhase extends Phase { 86890075Sobrien 86990075Sobrien public MembersPhase() { 870169689Skan super(CompletionCause.MEMBERS_PHASE, null); 87190075Sobrien } 87290075Sobrien 87390075Sobrien private boolean completing; 87490075Sobrien private List<Env<AttrContext>> todo = List.nil(); 87590075Sobrien 87690075Sobrien @Override 87790075Sobrien protected void doCompleteEnvs(List<Env<AttrContext>> envs) { 87890075Sobrien todo = todo.prependList(envs); 87990075Sobrien if (completing) { 880169689Skan return ; //the top-level invocation will handle all envs 88190075Sobrien } 882169689Skan boolean prevCompleting = completing; 88390075Sobrien completing = true; 88490075Sobrien try { 885169689Skan while (todo.nonEmpty()) { 886169689Skan Env<AttrContext> head = todo.head; 88790075Sobrien todo = todo.tail; 888169689Skan super.doCompleteEnvs(List.of(head)); 889169689Skan } 890169689Skan } finally { 891169689Skan completing = prevCompleting; 89290075Sobrien } 893169689Skan } 894169689Skan 895169689Skan @Override 896169689Skan protected void runPhase(Env<AttrContext> env) { 897169689Skan JCClassDecl tree = env.enclClass; 898169689Skan ClassSymbol sym = tree.sym; 89990075Sobrien ClassType ct = (ClassType)sym.type; 90090075Sobrien 901169689Skan // Add default constructor if needed. 90290075Sobrien if ((sym.flags() & INTERFACE) == 0 && 90390075Sobrien !TreeInfo.hasConstructors(tree.defs)) { 90490075Sobrien List<Type> argtypes = List.nil(); 90590075Sobrien List<Type> typarams = List.nil(); 90690075Sobrien List<Type> thrown = List.nil(); 90790075Sobrien long ctorFlags = 0; 90890075Sobrien boolean based = false; 90990075Sobrien boolean addConstructor = true; 91090075Sobrien JCNewClass nc = null; 91190075Sobrien if (sym.name.isEmpty()) { 91290075Sobrien nc = (JCNewClass)env.next.tree; 91390075Sobrien if (nc.constructor != null) { 91490075Sobrien addConstructor = nc.constructor.kind != ERR; 91590075Sobrien Type superConstrType = types.memberType(sym.type, 91690075Sobrien nc.constructor); 91790075Sobrien argtypes = superConstrType.getParameterTypes(); 91890075Sobrien typarams = superConstrType.getTypeArguments(); 91990075Sobrien ctorFlags = nc.constructor.flags() & VARARGS; 92090075Sobrien if (nc.encl != null) { 92190075Sobrien argtypes = argtypes.prepend(nc.encl.type); 92290075Sobrien based = true; 92390075Sobrien } 92490075Sobrien thrown = superConstrType.getThrownTypes(); 92590075Sobrien } 92690075Sobrien } 92790075Sobrien if (addConstructor) { 92890075Sobrien MethodSymbol basedConstructor = nc != null ? 92990075Sobrien (MethodSymbol)nc.constructor : null; 93090075Sobrien JCTree constrDef = DefaultConstructor(make.at(tree.pos), sym, 93190075Sobrien basedConstructor, 93290075Sobrien typarams, argtypes, thrown, 93390075Sobrien ctorFlags, based); 93490075Sobrien tree.defs = tree.defs.prepend(constrDef); 93590075Sobrien } 93690075Sobrien } 93790075Sobrien 93890075Sobrien // enter symbols for 'this' into current scope. 93990075Sobrien VarSymbol thisSym = 94090075Sobrien new VarSymbol(FINAL | HASINIT, names._this, sym.type, sym); 94190075Sobrien thisSym.pos = Position.FIRSTPOS; 94290075Sobrien env.info.scope.enter(thisSym); 94390075Sobrien // if this is a class, enter symbol for 'super' into current scope. 94490075Sobrien if ((sym.flags_field & INTERFACE) == 0 && 94590075Sobrien ct.supertype_field.hasTag(CLASS)) { 946169689Skan VarSymbol superSym = 94790075Sobrien new VarSymbol(FINAL | HASINIT, names._super, 948169689Skan ct.supertype_field, sym); 949117395Skan superSym.pos = Position.FIRSTPOS; 95090075Sobrien env.info.scope.enter(superSym); 95190075Sobrien } 952169689Skan 95390075Sobrien finishClass(tree, env); 95490075Sobrien 95590075Sobrien if (allowTypeAnnos) { 956169689Skan typeAnnotations.organizeTypeAnnotationsSignatures(env, (JCClassDecl)env.tree); 95790075Sobrien typeAnnotations.validateTypeAnnotationsSignatures(env, (JCClassDecl)env.tree); 95890075Sobrien } 95990075Sobrien } 96090075Sobrien 96190075Sobrien /** Enter members for a class. 96290075Sobrien */ 963169689Skan void finishClass(JCClassDecl tree, Env<AttrContext> env) { 96490075Sobrien if ((tree.mods.flags & Flags.ENUM) != 0 && 96590075Sobrien (types.supertype(tree.sym.type).tsym.flags() & Flags.ENUM) == 0) { 966169689Skan addEnumMembers(tree, env); 96790075Sobrien } 96890075Sobrien memberEnter.memberEnter(tree.defs, env); 96990075Sobrien 970169689Skan if (tree.sym.isAnnotationType()) { 971169689Skan Assert.check(tree.sym.isCompleted()); 972169689Skan tree.sym.setAnnotationTypeMetadata(new AnnotationTypeMetadata(tree.sym, annotate.annotationTypeSourceCompleter())); 973169689Skan } 974169689Skan } 975169689Skan 976169689Skan /** Add the implicit members for an enum type 97790075Sobrien * to the symbol table. 97890075Sobrien */ 97990075Sobrien private void addEnumMembers(JCClassDecl tree, Env<AttrContext> env) { 98090075Sobrien JCExpression valuesType = make.Type(new ArrayType(tree.sym.type, syms.arrayClass)); 98190075Sobrien 98290075Sobrien // public static T[] values() { return ???; } 98390075Sobrien JCMethodDecl values = make. 984132718Skan MethodDef(make.Modifiers(Flags.PUBLIC|Flags.STATIC), 98590075Sobrien names.values, 98690075Sobrien valuesType, 98790075Sobrien List.<JCTypeParameter>nil(), 98890075Sobrien List.<JCVariableDecl>nil(), 98990075Sobrien List.<JCExpression>nil(), // thrown 99090075Sobrien null, //make.Block(0, Tree.emptyList.prepend(make.Return(make.Ident(names._null)))), 99190075Sobrien null); 99290075Sobrien memberEnter.memberEnter(values, env); 993169689Skan 99490075Sobrien // public static T valueOf(String name) { return ???; } 99590075Sobrien JCMethodDecl valueOf = make. 99690075Sobrien MethodDef(make.Modifiers(Flags.PUBLIC|Flags.STATIC), 997132718Skan names.valueOf, 99890075Sobrien make.Type(tree.sym.type), 99990075Sobrien List.<JCTypeParameter>nil(), 100090075Sobrien List.of(make.VarDef(make.Modifiers(Flags.PARAMETER | 100190075Sobrien Flags.MANDATED), 100290075Sobrien names.fromString("name"), 1003169689Skan make.Type(syms.stringType), null)), 1004169689Skan List.<JCExpression>nil(), // thrown 100590075Sobrien null, //make.Block(0, Tree.emptyList.prepend(make.Return(make.Ident(names._null)))), 100690075Sobrien null); 1007169689Skan memberEnter.memberEnter(valueOf, env); 1008169689Skan } 100990075Sobrien 101090075Sobrien } 1011169689Skan 101290075Sobrien/* *************************************************************************** 101390075Sobrien * tree building 101490075Sobrien ****************************************************************************/ 101590075Sobrien 101690075Sobrien /** Generate default constructor for given class. For classes different 101790075Sobrien * from java.lang.Object, this is: 101890075Sobrien * 1019117395Skan * c(argtype_0 x_0, ..., argtype_n x_n) throws thrown { 102090075Sobrien * super(x_0, ..., x_n) 102190075Sobrien * } 102290075Sobrien * 1023117395Skan * or, if based == true: 102490075Sobrien * 102590075Sobrien * c(argtype_0 x_0, ..., argtype_n x_n) throws thrown { 102690075Sobrien * x_0.super(x_1, ..., x_n) 102790075Sobrien * } 102890075Sobrien * 102990075Sobrien * @param make The tree factory. 103090075Sobrien * @param c The class owning the default constructor. 103190075Sobrien * @param argtypes The parameter types of the constructor. 103290075Sobrien * @param thrown The thrown exceptions of the constructor. 103390075Sobrien * @param based Is first parameter a this$n? 103490075Sobrien */ 103590075Sobrien JCTree DefaultConstructor(TreeMaker make, 103690075Sobrien ClassSymbol c, 103790075Sobrien MethodSymbol baseInit, 103890075Sobrien List<Type> typarams, 103990075Sobrien List<Type> argtypes, 104090075Sobrien List<Type> thrown, 1041169689Skan long flags, 1042169689Skan boolean based) { 1043132718Skan JCTree result; 1044132718Skan if ((c.flags() & ENUM) != 0 && 1045132718Skan (types.supertype(c.type).tsym == syms.enumSym)) { 1046132718Skan // constructors of true enums are private 1047132718Skan flags = (flags & ~AccessFlags) | PRIVATE | GENERATEDCONSTR; 1048132718Skan } else 1049132718Skan flags |= (c.flags() & AccessFlags) | GENERATEDCONSTR; 1050132718Skan if (c.name.isEmpty()) { 1051132718Skan flags |= ANONCONSTR; 1052132718Skan } 1053132718Skan Type mType = new MethodType(argtypes, null, thrown, c); 1054132718Skan Type initType = typarams.nonEmpty() ? 1055132718Skan new ForAll(typarams, mType) : 1056132718Skan mType; 1057132718Skan MethodSymbol init = new MethodSymbol(flags, names.init, 1058132718Skan initType, c); 1059132718Skan init.params = createDefaultConstructorParams(make, baseInit, init, 1060132718Skan argtypes, based); 1061132718Skan List<JCVariableDecl> params = make.Params(argtypes, init); 1062132718Skan List<JCStatement> stats = List.nil(); 106390075Sobrien if (c.type != syms.objectType) { 1064132718Skan stats = stats.prepend(SuperCall(make, typarams, params, based)); 106590075Sobrien } 106690075Sobrien result = make.MethodDef(init, make.Block(0, stats)); 1067169689Skan return result; 1068169689Skan } 1069169689Skan 1070169689Skan private List<VarSymbol> createDefaultConstructorParams( 107190075Sobrien TreeMaker make, 107290075Sobrien MethodSymbol baseInit, 1073169689Skan MethodSymbol init, 107490075Sobrien List<Type> argtypes, 107590075Sobrien boolean based) { 107690075Sobrien List<VarSymbol> initParams = null; 107790075Sobrien List<Type> argTypesList = argtypes; 107890075Sobrien if (based) { 107990075Sobrien /* In this case argtypes will have an extra type, compared to baseInit, 108090075Sobrien * corresponding to the type of the enclosing instance i.e.: 108190075Sobrien * 108290075Sobrien * Inner i = outer.new Inner(1){} 108390075Sobrien * 108490075Sobrien * in the above example argtypes will be (Outer, int) and baseInit 108590075Sobrien * will have parameter's types (int). So in this case we have to add 108690075Sobrien * first the extra type in argtypes and then get the names of the 108790075Sobrien * parameters from baseInit. 1088117395Skan */ 108990075Sobrien initParams = List.nil(); 109090075Sobrien VarSymbol param = new VarSymbol(PARAMETER, make.paramName(0), argtypes.head, init); 109190075Sobrien initParams = initParams.append(param); 109290075Sobrien argTypesList = argTypesList.tail; 109390075Sobrien } 109490075Sobrien if (baseInit != null && baseInit.params != null && 109590075Sobrien baseInit.params.nonEmpty() && argTypesList.nonEmpty()) { 109690075Sobrien initParams = (initParams == null) ? List.<VarSymbol>nil() : initParams; 109790075Sobrien List<VarSymbol> baseInitParams = baseInit.params; 109890075Sobrien while (baseInitParams.nonEmpty() && argTypesList.nonEmpty()) { 109990075Sobrien VarSymbol param = new VarSymbol(baseInitParams.head.flags() | PARAMETER, 1100169689Skan baseInitParams.head.name, argTypesList.head, init); 1101169689Skan initParams = initParams.append(param); 1102169689Skan baseInitParams = baseInitParams.tail; 1103169689Skan argTypesList = argTypesList.tail; 1104169689Skan } 1105169689Skan } 1106169689Skan return initParams; 1107169689Skan } 1108169689Skan 1109169689Skan /** Generate call to superclass constructor. This is: 1110169689Skan * 1111169689Skan * super(id_0, ..., id_n) 1112169689Skan * 1113169689Skan * or, if based == true 1114169689Skan * 1115169689Skan * id_0.super(id_1,...,id_n) 1116169689Skan * 1117169689Skan * where id_0, ..., id_n are the names of the given parameters. 1118169689Skan * 1119169689Skan * @param make The tree factory 1120169689Skan * @param params The parameters that need to be passed to super 1121169689Skan * @param typarams The type parameters that need to be passed to super 1122169689Skan * @param based Is first parameter a this$n? 1123169689Skan */ 1124169689Skan JCExpressionStatement SuperCall(TreeMaker make, 1125169689Skan List<Type> typarams, 1126169689Skan List<JCVariableDecl> params, 1127169689Skan boolean based) { 1128169689Skan JCExpression meth; 1129169689Skan if (based) { 1130169689Skan meth = make.Select(make.Ident(params.head), names._super); 113190075Sobrien params = params.tail; 113290075Sobrien } else { 113390075Sobrien meth = make.Ident(names._super); 1134132718Skan } 113590075Sobrien List<JCExpression> typeargs = typarams.nonEmpty() ? make.Types(typarams) : null; 1136169689Skan return make.Exec(make.Apply(typeargs, meth, make.Idents(params))); 113796263Sobrien } 113896263Sobrien} 1139169689Skan