duke@1: /*
jjg@1521: * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
duke@1: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1: *
duke@1: * This code is free software; you can redistribute it and/or modify it
duke@1: * under the terms of the GNU General Public License version 2 only, as
ohair@554: * published by the Free Software Foundation. Oracle designates this
duke@1: * particular file as subject to the "Classpath" exception as provided
ohair@554: * by Oracle in the LICENSE file that accompanied this code.
duke@1: *
duke@1: * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@1: * version 2 for more details (a copy is included in the LICENSE file that
duke@1: * accompanied this code).
duke@1: *
duke@1: * You should have received a copy of the GNU General Public License version
duke@1: * 2 along with this work; if not, write to the Free Software Foundation,
duke@1: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1: *
ohair@554: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554: * or visit www.oracle.com if you need additional information or have any
ohair@554: * questions.
duke@1: */
duke@1:
duke@1: package com.sun.tools.javac.comp;
duke@1:
jjg@1521: import java.util.HashMap;
jjg@1521: import java.util.HashSet;
jjg@1521: import java.util.LinkedHashMap;
jjg@1521: import java.util.Map;
duke@1: import java.util.Set;
jjg@1521:
jjg@1521: import javax.lang.model.type.TypeKind;
duke@1: import javax.tools.JavaFileObject;
duke@1:
duke@1: import com.sun.tools.javac.code.*;
duke@1: import com.sun.tools.javac.jvm.*;
duke@1: import com.sun.tools.javac.tree.*;
duke@1: import com.sun.tools.javac.util.*;
duke@1:
duke@1: import com.sun.tools.javac.code.Type.*;
duke@1: import com.sun.tools.javac.code.Symbol.*;
duke@1: import com.sun.tools.javac.tree.JCTree.*;
duke@1:
duke@1: import static com.sun.tools.javac.code.Flags.*;
jjg@1127: import static com.sun.tools.javac.code.Flags.ANNOTATION;
duke@1: import static com.sun.tools.javac.code.Kinds.*;
jjg@1374: import static com.sun.tools.javac.code.TypeTag.CLASS;
jjg@1374: import static com.sun.tools.javac.code.TypeTag.ERROR;
jjg@1374: import static com.sun.tools.javac.code.TypeTag.TYPEVAR;
jjg@1127: import static com.sun.tools.javac.tree.JCTree.Tag.*;
jjh@1188: import com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag;
duke@1: import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
duke@1:
duke@1: /** This is the second phase of Enter, in which classes are completed
duke@1: * by entering their members into the class scope using
duke@1: * MemberEnter.complete(). See Enter for an overview.
duke@1: *
jjg@581: *
This is NOT part of any supported API.
jjg@581: * If you write code that depends on this, you do so at your own risk.
duke@1: * This code and its internal interfaces are subject to change or
duke@1: * deletion without notice.
duke@1: */
duke@1: public class MemberEnter extends JCTree.Visitor implements Completer {
duke@1: protected static final Context.Key memberEnterKey =
duke@1: new Context.Key();
duke@1:
duke@1: /** A switch to determine whether we check for package/class conflicts
duke@1: */
duke@1: final static boolean checkClash = true;
duke@1:
jjg@113: private final Names names;
duke@1: private final Enter enter;
duke@1: private final Log log;
duke@1: private final Check chk;
duke@1: private final Attr attr;
duke@1: private final Symtab syms;
duke@1: private final TreeMaker make;
duke@1: private final ClassReader reader;
duke@1: private final Todo todo;
duke@1: private final Annotate annotate;
duke@1: private final Types types;
mcimadamore@89: private final JCDiagnostic.Factory diags;
jfranck@1313: private final Source source;
duke@1: private final Target target;
mcimadamore@852: private final DeferredLintHandler deferredLintHandler;
duke@1:
duke@1: public static MemberEnter instance(Context context) {
duke@1: MemberEnter instance = context.get(memberEnterKey);
duke@1: if (instance == null)
duke@1: instance = new MemberEnter(context);
duke@1: return instance;
duke@1: }
duke@1:
duke@1: protected MemberEnter(Context context) {
duke@1: context.put(memberEnterKey, this);
jjg@113: names = Names.instance(context);
duke@1: enter = Enter.instance(context);
duke@1: log = Log.instance(context);
duke@1: chk = Check.instance(context);
duke@1: attr = Attr.instance(context);
duke@1: syms = Symtab.instance(context);
duke@1: make = TreeMaker.instance(context);
duke@1: reader = ClassReader.instance(context);
duke@1: todo = Todo.instance(context);
duke@1: annotate = Annotate.instance(context);
duke@1: types = Types.instance(context);
mcimadamore@89: diags = JCDiagnostic.Factory.instance(context);
jfranck@1313: source = Source.instance(context);
duke@1: target = Target.instance(context);
mcimadamore@852: deferredLintHandler = DeferredLintHandler.instance(context);
duke@1: }
duke@1:
duke@1: /** A queue for classes whose members still need to be entered into the
duke@1: * symbol table.
duke@1: */
duke@1: ListBuffer> halfcompleted = new ListBuffer>();
duke@1:
duke@1: /** Set to true only when the first of a set of classes is
duke@1: * processed from the halfcompleted queue.
duke@1: */
duke@1: boolean isFirst = true;
duke@1:
duke@1: /** A flag to disable completion from time to time during member
duke@1: * enter, as we only need to look up types. This avoids
duke@1: * unnecessarily deep recursion.
duke@1: */
duke@1: boolean completionEnabled = true;
duke@1:
duke@1: /* ---------- Processing import clauses ----------------
duke@1: */
duke@1:
duke@1: /** Import all classes of a class or package on demand.
duke@1: * @param pos Position to be used for error reporting.
duke@1: * @param tsym The class or package the members of which are imported.
jjg@1358: * @param env The env in which the imported classes will be entered.
duke@1: */
duke@1: private void importAll(int pos,
duke@1: final TypeSymbol tsym,
duke@1: Env env) {
duke@1: // Check that packages imported from exist (JLS ???).
duke@1: if (tsym.kind == PCK && tsym.members().elems == null && !tsym.exists()) {
duke@1: // If we can't find java.lang, exit immediately.
duke@1: if (((PackageSymbol)tsym).fullname.equals(names.java_lang)) {
mcimadamore@89: JCDiagnostic msg = diags.fragment("fatal.err.no.java.lang");
duke@1: throw new FatalError(msg);
duke@1: } else {
jjh@1188: log.error(DiagnosticFlag.RESOLVE_ERROR, pos, "doesnt.exist", tsym);
duke@1: }
duke@1: }
jjg@767: env.toplevel.starImportScope.importAll(tsym.members());
duke@1: }
duke@1:
duke@1: /** Import all static members of a class or package on demand.
duke@1: * @param pos Position to be used for error reporting.
duke@1: * @param tsym The class or package the members of which are imported.
jjg@1358: * @param env The env in which the imported classes will be entered.
duke@1: */
duke@1: private void importStaticAll(int pos,
duke@1: final TypeSymbol tsym,
duke@1: Env env) {
duke@1: final JavaFileObject sourcefile = env.toplevel.sourcefile;
duke@1: final Scope toScope = env.toplevel.starImportScope;
duke@1: final PackageSymbol packge = env.toplevel.packge;
duke@1: final TypeSymbol origin = tsym;
duke@1:
duke@1: // enter imported types immediately
duke@1: new Object() {
duke@1: Set processed = new HashSet();
duke@1: void importFrom(TypeSymbol tsym) {
duke@1: if (tsym == null || !processed.add(tsym))
duke@1: return;
duke@1:
duke@1: // also import inherited names
duke@1: importFrom(types.supertype(tsym.type).tsym);
duke@1: for (Type t : types.interfaces(tsym.type))
duke@1: importFrom(t.tsym);
duke@1:
duke@1: final Scope fromScope = tsym.members();
duke@1: for (Scope.Entry e = fromScope.elems; e != null; e = e.sibling) {
duke@1: Symbol sym = e.sym;
duke@1: if (sym.kind == TYP &&
duke@1: (sym.flags() & STATIC) != 0 &&
duke@1: staticImportAccessible(sym, packge) &&
duke@1: sym.isMemberOf(origin, types) &&
duke@1: !toScope.includes(sym))
duke@1: toScope.enter(sym, fromScope, origin.members());
duke@1: }
duke@1: }
duke@1: }.importFrom(tsym);
duke@1:
duke@1: // enter non-types before annotations that might use them
duke@1: annotate.earlier(new Annotate.Annotator() {
duke@1: Set processed = new HashSet();
duke@1:
duke@1: public String toString() {
duke@1: return "import static " + tsym + ".*" + " in " + sourcefile;
duke@1: }
duke@1: void importFrom(TypeSymbol tsym) {
duke@1: if (tsym == null || !processed.add(tsym))
duke@1: return;
duke@1:
duke@1: // also import inherited names
duke@1: importFrom(types.supertype(tsym.type).tsym);
duke@1: for (Type t : types.interfaces(tsym.type))
duke@1: importFrom(t.tsym);
duke@1:
duke@1: final Scope fromScope = tsym.members();
duke@1: for (Scope.Entry e = fromScope.elems; e != null; e = e.sibling) {
duke@1: Symbol sym = e.sym;
duke@1: if (sym.isStatic() && sym.kind != TYP &&
duke@1: staticImportAccessible(sym, packge) &&
duke@1: !toScope.includes(sym) &&
duke@1: sym.isMemberOf(origin, types)) {
duke@1: toScope.enter(sym, fromScope, origin.members());
duke@1: }
duke@1: }
duke@1: }
duke@1: public void enterAnnotation() {
duke@1: importFrom(tsym);
duke@1: }
duke@1: });
duke@1: }
duke@1:
duke@1: // is the sym accessible everywhere in packge?
duke@1: boolean staticImportAccessible(Symbol sym, PackageSymbol packge) {
duke@1: int flags = (int)(sym.flags() & AccessFlags);
duke@1: switch (flags) {
duke@1: default:
duke@1: case PUBLIC:
duke@1: return true;
duke@1: case PRIVATE:
duke@1: return false;
duke@1: case 0:
duke@1: case PROTECTED:
duke@1: return sym.packge() == packge;
duke@1: }
duke@1: }
duke@1:
duke@1: /** Import statics types of a given name. Non-types are handled in Attr.
duke@1: * @param pos Position to be used for error reporting.
duke@1: * @param tsym The class from which the name is imported.
duke@1: * @param name The (simple) name being imported.
duke@1: * @param env The environment containing the named import
duke@1: * scope to add to.
duke@1: */
duke@1: private void importNamedStatic(final DiagnosticPosition pos,
duke@1: final TypeSymbol tsym,
duke@1: final Name name,
duke@1: final Env env) {
duke@1: if (tsym.kind != TYP) {
jjh@1270: log.error(DiagnosticFlag.RECOVERABLE, pos, "static.imp.only.classes.and.interfaces");
duke@1: return;
duke@1: }
duke@1:
duke@1: final Scope toScope = env.toplevel.namedImportScope;
duke@1: final PackageSymbol packge = env.toplevel.packge;
duke@1: final TypeSymbol origin = tsym;
duke@1:
duke@1: // enter imported types immediately
duke@1: new Object() {
duke@1: Set processed = new HashSet();
duke@1: void importFrom(TypeSymbol tsym) {
duke@1: if (tsym == null || !processed.add(tsym))
duke@1: return;
duke@1:
duke@1: // also import inherited names
duke@1: importFrom(types.supertype(tsym.type).tsym);
duke@1: for (Type t : types.interfaces(tsym.type))
duke@1: importFrom(t.tsym);
duke@1:
duke@1: for (Scope.Entry e = tsym.members().lookup(name);
duke@1: e.scope != null;
duke@1: e = e.next()) {
duke@1: Symbol sym = e.sym;
duke@1: if (sym.isStatic() &&
duke@1: sym.kind == TYP &&
duke@1: staticImportAccessible(sym, packge) &&
duke@1: sym.isMemberOf(origin, types) &&
duke@1: chk.checkUniqueStaticImport(pos, sym, toScope))
duke@1: toScope.enter(sym, sym.owner.members(), origin.members());
duke@1: }
duke@1: }
duke@1: }.importFrom(tsym);
duke@1:
duke@1: // enter non-types before annotations that might use them
duke@1: annotate.earlier(new Annotate.Annotator() {
duke@1: Set processed = new HashSet();
duke@1: boolean found = false;
duke@1:
duke@1: public String toString() {
duke@1: return "import static " + tsym + "." + name;
duke@1: }
duke@1: void importFrom(TypeSymbol tsym) {
duke@1: if (tsym == null || !processed.add(tsym))
duke@1: return;
duke@1:
duke@1: // also import inherited names
duke@1: importFrom(types.supertype(tsym.type).tsym);
duke@1: for (Type t : types.interfaces(tsym.type))
duke@1: importFrom(t.tsym);
duke@1:
duke@1: for (Scope.Entry e = tsym.members().lookup(name);
duke@1: e.scope != null;
duke@1: e = e.next()) {
duke@1: Symbol sym = e.sym;
duke@1: if (sym.isStatic() &&
duke@1: staticImportAccessible(sym, packge) &&
duke@1: sym.isMemberOf(origin, types)) {
duke@1: found = true;
duke@1: if (sym.kind == MTH ||
duke@1: sym.kind != TYP && chk.checkUniqueStaticImport(pos, sym, toScope))
duke@1: toScope.enter(sym, sym.owner.members(), origin.members());
duke@1: }
duke@1: }
duke@1: }
duke@1: public void enterAnnotation() {
duke@1: JavaFileObject prev = log.useSource(env.toplevel.sourcefile);
duke@1: try {
duke@1: importFrom(tsym);
duke@1: if (!found) {
duke@1: log.error(pos, "cant.resolve.location",
mcimadamore@80: KindName.STATIC,
mcimadamore@80: name, List.nil(), List.nil(),
mcimadamore@89: Kinds.typeKindName(tsym.type),
duke@1: tsym.type);
duke@1: }
duke@1: } finally {
duke@1: log.useSource(prev);
duke@1: }
duke@1: }
duke@1: });
duke@1: }
duke@1: /** Import given class.
duke@1: * @param pos Position to be used for error reporting.
duke@1: * @param tsym The class to be imported.
duke@1: * @param env The environment containing the named import
duke@1: * scope to add to.
duke@1: */
duke@1: private void importNamed(DiagnosticPosition pos, Symbol tsym, Env env) {
duke@1: if (tsym.kind == TYP &&
duke@1: chk.checkUniqueImport(pos, tsym, env.toplevel.namedImportScope))
duke@1: env.toplevel.namedImportScope.enter(tsym, tsym.owner.members());
duke@1: }
duke@1:
duke@1: /** Construct method type from method signature.
duke@1: * @param typarams The method's type parameters.
duke@1: * @param params The method's value parameters.
duke@1: * @param res The method's result type,
duke@1: * null if it is a constructor.
jjg@1521: * @param recvparam The method's receiver parameter,
jjg@1521: * null if none given; TODO: or already set here?
duke@1: * @param thrown The method's thrown exceptions.
duke@1: * @param env The method's (local) environment.
duke@1: */
duke@1: Type signature(List typarams,
duke@1: List params,
duke@1: JCTree res,
jjg@1521: JCVariableDecl recvparam,
duke@1: List thrown,
duke@1: Env env) {
duke@1:
duke@1: // Enter and attribute type parameters.
duke@1: List tvars = enter.classEnter(typarams, env);
duke@1: attr.attribTypeVariables(typarams, env);
duke@1:
duke@1: // Enter and attribute value parameters.
duke@1: ListBuffer argbuf = new ListBuffer();
duke@1: for (List l = params; l.nonEmpty(); l = l.tail) {
duke@1: memberEnter(l.head, env);
duke@1: argbuf.append(l.head.vartype.type);
duke@1: }
duke@1:
duke@1: // Attribute result type, if one is given.
duke@1: Type restype = res == null ? syms.voidType : attr.attribType(res, env);
duke@1:
jjg@1521: // Attribute receiver type, if one is given.
jjg@1521: Type recvtype;
jjg@1521: if (recvparam!=null) {
jjg@1521: memberEnter(recvparam, env);
jjg@1521: recvtype = recvparam.vartype.type;
jjg@1521: } else {
jjg@1521: recvtype = null;
jjg@1521: }
jjg@1521:
duke@1: // Attribute thrown exceptions.
duke@1: ListBuffer thrownbuf = new ListBuffer();
duke@1: for (List l = thrown; l.nonEmpty(); l = l.tail) {
duke@1: Type exc = attr.attribType(l.head, env);
jjg@1374: if (!exc.hasTag(TYPEVAR))
duke@1: exc = chk.checkClassType(l.head.pos(), exc);
duke@1: thrownbuf.append(exc);
duke@1: }
jjg@1521: MethodType mtype = new MethodType(argbuf.toList(),
duke@1: restype,
duke@1: thrownbuf.toList(),
duke@1: syms.methodClass);
jjg@1521: mtype.recvtype = recvtype;
jjg@1521:
duke@1: return tvars.isEmpty() ? mtype : new ForAll(tvars, mtype);
duke@1: }
duke@1:
duke@1: /* ********************************************************************
duke@1: * Visitor methods for member enter
duke@1: *********************************************************************/
duke@1:
duke@1: /** Visitor argument: the current environment
duke@1: */
duke@1: protected Env env;
duke@1:
duke@1: /** Enter field and method definitions and process import
duke@1: * clauses, catching any completion failure exceptions.
duke@1: */
duke@1: protected void memberEnter(JCTree tree, Env env) {
duke@1: Env prevEnv = this.env;
duke@1: try {
duke@1: this.env = env;
duke@1: tree.accept(this);
duke@1: } catch (CompletionFailure ex) {
duke@1: chk.completionError(tree.pos(), ex);
duke@1: } finally {
duke@1: this.env = prevEnv;
duke@1: }
duke@1: }
duke@1:
duke@1: /** Enter members from a list of trees.
duke@1: */
duke@1: void memberEnter(List extends JCTree> trees, Env env) {
duke@1: for (List extends JCTree> l = trees; l.nonEmpty(); l = l.tail)
duke@1: memberEnter(l.head, env);
duke@1: }
duke@1:
duke@1: /** Enter members for a class.
duke@1: */
duke@1: void finishClass(JCClassDecl tree, Env env) {
duke@1: if ((tree.mods.flags & Flags.ENUM) != 0 &&
duke@1: (types.supertype(tree.sym.type).tsym.flags() & Flags.ENUM) == 0) {
duke@1: addEnumMembers(tree, env);
duke@1: }
duke@1: memberEnter(tree.defs, env);
duke@1: }
duke@1:
duke@1: /** Add the implicit members for an enum type
duke@1: * to the symbol table.
duke@1: */
duke@1: private void addEnumMembers(JCClassDecl tree, Env env) {
duke@1: JCExpression valuesType = make.Type(new ArrayType(tree.sym.type, syms.arrayClass));
duke@1:
duke@1: // public static T[] values() { return ???; }
duke@1: JCMethodDecl values = make.
duke@1: MethodDef(make.Modifiers(Flags.PUBLIC|Flags.STATIC),
duke@1: names.values,
duke@1: valuesType,
duke@1: List.nil(),
duke@1: List.nil(),
duke@1: List.nil(), // thrown
duke@1: null, //make.Block(0, Tree.emptyList.prepend(make.Return(make.Ident(names._null)))),
duke@1: null);
duke@1: memberEnter(values, env);
duke@1:
duke@1: // public static T valueOf(String name) { return ???; }
duke@1: JCMethodDecl valueOf = make.
duke@1: MethodDef(make.Modifiers(Flags.PUBLIC|Flags.STATIC),
duke@1: names.valueOf,
duke@1: make.Type(tree.sym.type),
duke@1: List.nil(),
duke@1: List.of(make.VarDef(make.Modifiers(Flags.PARAMETER),
duke@1: names.fromString("name"),
duke@1: make.Type(syms.stringType), null)),
duke@1: List.nil(), // thrown
duke@1: null, //make.Block(0, Tree.emptyList.prepend(make.Return(make.Ident(names._null)))),
duke@1: null);
duke@1: memberEnter(valueOf, env);
duke@1:
duke@1: // the remaining members are for bootstrapping only
duke@1: if (!target.compilerBootstrap(tree.sym)) return;
duke@1:
duke@1: // public final int ordinal() { return ???; }
duke@1: JCMethodDecl ordinal = make.at(tree.pos).
duke@1: MethodDef(make.Modifiers(Flags.PUBLIC|Flags.FINAL),
duke@1: names.ordinal,
duke@1: make.Type(syms.intType),
duke@1: List.nil(),
duke@1: List.nil(),
duke@1: List.nil(),
duke@1: null,
duke@1: null);
duke@1: memberEnter(ordinal, env);
duke@1:
duke@1: // public final String name() { return ???; }
duke@1: JCMethodDecl name = make.
duke@1: MethodDef(make.Modifiers(Flags.PUBLIC|Flags.FINAL),
duke@1: names._name,
duke@1: make.Type(syms.stringType),
duke@1: List.nil(),
duke@1: List.nil(),
duke@1: List.nil(),
duke@1: null,
duke@1: null);
duke@1: memberEnter(name, env);
duke@1:
duke@1: // public int compareTo(E other) { return ???; }
duke@1: MethodSymbol compareTo = new
duke@1: MethodSymbol(Flags.PUBLIC,
duke@1: names.compareTo,
duke@1: new MethodType(List.of(tree.sym.type),
duke@1: syms.intType,
duke@1: List.nil(),
duke@1: syms.methodClass),
duke@1: tree.sym);
duke@1: memberEnter(make.MethodDef(compareTo, null), env);
duke@1: }
duke@1:
duke@1: public void visitTopLevel(JCCompilationUnit tree) {
duke@1: if (tree.starImportScope.elems != null) {
duke@1: // we must have already processed this toplevel
duke@1: return;
duke@1: }
duke@1:
duke@1: // check that no class exists with same fully qualified name as
duke@1: // toplevel package
duke@1: if (checkClash && tree.pid != null) {
duke@1: Symbol p = tree.packge;
duke@1: while (p.owner != syms.rootPackage) {
duke@1: p.owner.complete(); // enter all class members of p
duke@1: if (syms.classes.get(p.getQualifiedName()) != null) {
duke@1: log.error(tree.pos,
duke@1: "pkg.clashes.with.class.of.same.name",
duke@1: p);
duke@1: }
duke@1: p = p.owner;
duke@1: }
duke@1: }
duke@1:
duke@1: // process package annotations
duke@1: annotateLater(tree.packageAnnotations, env, tree.packge);
duke@1:
duke@1: // Import-on-demand java.lang.
duke@1: importAll(tree.pos, reader.enterPackage(names.java_lang), env);
duke@1:
duke@1: // Process all import clauses.
duke@1: memberEnter(tree.defs, env);
duke@1: }
duke@1:
duke@1: // process the non-static imports and the static imports of types.
duke@1: public void visitImport(JCImport tree) {
mcimadamore@1220: JCFieldAccess imp = (JCFieldAccess)tree.qualid;
duke@1: Name name = TreeInfo.name(imp);
duke@1:
duke@1: // Create a local environment pointing to this tree to disable
duke@1: // effects of other imports in Resolve.findGlobalType
duke@1: Env localEnv = env.dup(tree);
duke@1:
mcimadamore@1220: TypeSymbol p = attr.attribImportQualifier(tree, localEnv).tsym;
duke@1: if (name == names.asterisk) {
duke@1: // Import on demand.
mcimadamore@1220: chk.checkCanonical(imp.selected);
duke@1: if (tree.staticImport)
duke@1: importStaticAll(tree.pos, p, env);
duke@1: else
duke@1: importAll(tree.pos, p, env);
duke@1: } else {
duke@1: // Named type import.
duke@1: if (tree.staticImport) {
duke@1: importNamedStatic(tree.pos(), p, name, localEnv);
mcimadamore@1220: chk.checkCanonical(imp.selected);
duke@1: } else {
duke@1: TypeSymbol c = attribImportType(imp, localEnv).tsym;
duke@1: chk.checkCanonical(imp);
duke@1: importNamed(tree.pos(), c, env);
duke@1: }
duke@1: }
duke@1: }
duke@1:
duke@1: public void visitMethodDef(JCMethodDecl tree) {
duke@1: Scope enclScope = enter.enterScope(env);
duke@1: MethodSymbol m = new MethodSymbol(0, tree.name, null, enclScope.owner);
duke@1: m.flags_field = chk.checkFlags(tree.pos(), tree.mods.flags, m, tree);
duke@1: tree.sym = m;
mcimadamore@1393:
mcimadamore@1393: //if this is a default method, add the DEFAULT flag to the enclosing interface
mcimadamore@1393: if ((tree.mods.flags & DEFAULT) != 0) {
mcimadamore@1393: m.enclClass().flags_field |= DEFAULT;
mcimadamore@1393: }
mcimadamore@1393:
duke@1: Env localEnv = methodEnv(tree, env);
duke@1:
mcimadamore@852: DeferredLintHandler prevLintHandler =
mcimadamore@852: chk.setDeferredLintHandler(deferredLintHandler.setPos(tree.pos()));
mcimadamore@852: try {
mcimadamore@852: // Compute the method type
mcimadamore@852: m.type = signature(tree.typarams, tree.params,
jjg@1521: tree.restype, tree.recvparam,
jjg@1521: tree.thrown,
mcimadamore@852: localEnv);
mcimadamore@852: } finally {
mcimadamore@852: chk.setDeferredLintHandler(prevLintHandler);
mcimadamore@852: }
duke@1:
duke@1: // Set m.params
duke@1: ListBuffer params = new ListBuffer();
duke@1: JCVariableDecl lastParam = null;
duke@1: for (List l = tree.params; l.nonEmpty(); l = l.tail) {
duke@1: JCVariableDecl param = lastParam = l.head;
jjg@816: params.append(Assert.checkNonNull(param.sym));
duke@1: }
duke@1: m.params = params.toList();
duke@1:
duke@1: // mark the method varargs, if necessary
duke@1: if (lastParam != null && (lastParam.mods.flags & Flags.VARARGS) != 0)
duke@1: m.flags_field |= Flags.VARARGS;
duke@1:
duke@1: localEnv.info.scope.leave();
duke@1: if (chk.checkUnique(tree.pos(), m, enclScope)) {
duke@1: enclScope.enter(m);
duke@1: }
duke@1: annotateLater(tree.mods.annotations, localEnv, m);
jjg@1521: // Visit the signature of the method. Note that
jjg@1521: // TypeAnnotate doesn't descend into the body.
jjg@1521: typeAnnotate(tree, localEnv, m);
jjg@1521:
duke@1: if (tree.defaultValue != null)
duke@1: annotateDefaultValueLater(tree.defaultValue, localEnv, m);
duke@1: }
duke@1:
duke@1: /** Create a fresh environment for method bodies.
duke@1: * @param tree The method definition.
duke@1: * @param env The environment current outside of the method definition.
duke@1: */
duke@1: Env methodEnv(JCMethodDecl tree, Env env) {
duke@1: Env localEnv =
duke@1: env.dup(tree, env.info.dup(env.info.scope.dupUnshared()));
duke@1: localEnv.enclMethod = tree;
duke@1: localEnv.info.scope.owner = tree.sym;
mcimadamore@1347: if (tree.sym.type != null) {
mcimadamore@1347: //when this is called in the enter stage, there's no type to be set
mcimadamore@1347: localEnv.info.returnResult = attr.new ResultInfo(VAL, tree.sym.type.getReturnType());
mcimadamore@1347: }
duke@1: if ((tree.mods.flags & STATIC) != 0) localEnv.info.staticLevel++;
duke@1: return localEnv;
duke@1: }
duke@1:
duke@1: public void visitVarDef(JCVariableDecl tree) {
duke@1: Env localEnv = env;
duke@1: if ((tree.mods.flags & STATIC) != 0 ||
duke@1: (env.info.scope.owner.flags() & INTERFACE) != 0) {
duke@1: localEnv = env.dup(tree, env.info.dup());
duke@1: localEnv.info.staticLevel++;
duke@1: }
mcimadamore@852: DeferredLintHandler prevLintHandler =
mcimadamore@852: chk.setDeferredLintHandler(deferredLintHandler.setPos(tree.pos()));
mcimadamore@852: try {
mcimadamore@1269: if (TreeInfo.isEnumInit(tree)) {
mcimadamore@1269: attr.attribIdentAsEnumType(localEnv, (JCIdent)tree.vartype);
mcimadamore@1269: } else {
mcimadamore@1269: attr.attribType(tree.vartype, localEnv);
mcimadamore@1269: }
mcimadamore@852: } finally {
mcimadamore@852: chk.setDeferredLintHandler(prevLintHandler);
mcimadamore@852: }
mcimadamore@852:
mcimadamore@795: if ((tree.mods.flags & VARARGS) != 0) {
mcimadamore@795: //if we are entering a varargs parameter, we need to replace its type
mcimadamore@795: //(a plain array type) with the more precise VarargsType --- we need
mcimadamore@795: //to do it this way because varargs is represented in the tree as a modifier
mcimadamore@795: //on the parameter declaration, and not as a distinct type of array node.
jjg@1521: ArrayType atype = (ArrayType)tree.vartype.type.unannotatedType();
mcimadamore@795: tree.vartype.type = atype.makeVarargs();
mcimadamore@795: }
duke@1: Scope enclScope = enter.enterScope(env);
duke@1: VarSymbol v =
duke@1: new VarSymbol(0, tree.name, tree.vartype.type, enclScope.owner);
duke@1: v.flags_field = chk.checkFlags(tree.pos(), tree.mods.flags, v, tree);
duke@1: tree.sym = v;
duke@1: if (tree.init != null) {
duke@1: v.flags_field |= HASINIT;
mcimadamore@1348: if ((v.flags_field & FINAL) != 0 &&
mcimadamore@1348: !tree.init.hasTag(NEWCLASS) &&
mcimadamore@1348: !tree.init.hasTag(LAMBDA)) {
mcimadamore@94: Env initEnv = getInitEnv(tree, env);
mcimadamore@94: initEnv.info.enclVar = v;
jjg@841: v.setLazyConstValue(initEnv(tree, initEnv), attr, tree.init);
mcimadamore@94: }
duke@1: }
duke@1: if (chk.checkUnique(tree.pos(), v, enclScope)) {
duke@1: chk.checkTransparentVar(tree.pos(), v, enclScope);
duke@1: enclScope.enter(v);
duke@1: }
duke@1: annotateLater(tree.mods.annotations, localEnv, v);
jjg@1521: typeAnnotate(tree.vartype, env, tree.sym);
jjg@1521: annotate.flush();
duke@1: v.pos = tree.pos;
duke@1: }
duke@1:
duke@1: /** Create a fresh environment for a variable's initializer.
duke@1: * If the variable is a field, the owner of the environment's scope
duke@1: * is be the variable itself, otherwise the owner is the method
duke@1: * enclosing the variable definition.
duke@1: *
duke@1: * @param tree The variable definition.
duke@1: * @param env The environment current outside of the variable definition.
duke@1: */
duke@1: Env initEnv(JCVariableDecl tree, Env env) {
duke@1: Env localEnv = env.dupto(new AttrContextEnv(tree, env.info.dup()));
duke@1: if (tree.sym.owner.kind == TYP) {
mcimadamore@1348: localEnv.info.scope = env.info.scope.dupUnshared();
duke@1: localEnv.info.scope.owner = tree.sym;
duke@1: }
duke@1: if ((tree.mods.flags & STATIC) != 0 ||
mcimadamore@1393: ((env.enclClass.sym.flags() & INTERFACE) != 0 && env.enclMethod == null))
duke@1: localEnv.info.staticLevel++;
duke@1: return localEnv;
duke@1: }
duke@1:
duke@1: /** Default member enter visitor method: do nothing
duke@1: */
duke@1: public void visitTree(JCTree tree) {
duke@1: }
duke@1:
duke@1: public void visitErroneous(JCErroneous tree) {
jjg@711: if (tree.errs != null)
jjg@711: memberEnter(tree.errs, env);
duke@1: }
duke@1:
duke@1: public Env getMethodEnv(JCMethodDecl tree, Env env) {
duke@1: Env mEnv = methodEnv(tree, env);
jfranck@1313: mEnv.info.lint = mEnv.info.lint.augment(tree.sym.annotations, tree.sym.flags());
duke@1: for (List l = tree.typarams; l.nonEmpty(); l = l.tail)
duke@1: mEnv.info.scope.enterIfAbsent(l.head.type.tsym);
duke@1: for (List l = tree.params; l.nonEmpty(); l = l.tail)
duke@1: mEnv.info.scope.enterIfAbsent(l.head.sym);
duke@1: return mEnv;
duke@1: }
duke@1:
duke@1: public Env getInitEnv(JCVariableDecl tree, Env env) {
duke@1: Env iEnv = initEnv(tree, env);
duke@1: return iEnv;
duke@1: }
duke@1:
duke@1: /* ********************************************************************
duke@1: * Type completion
duke@1: *********************************************************************/
duke@1:
duke@1: Type attribImportType(JCTree tree, Env env) {
jjg@816: Assert.check(completionEnabled);
duke@1: try {
duke@1: // To prevent deep recursion, suppress completion of some
duke@1: // types.
duke@1: completionEnabled = false;
duke@1: return attr.attribType(tree, env);
duke@1: } finally {
duke@1: completionEnabled = true;
duke@1: }
duke@1: }
duke@1:
duke@1: /* ********************************************************************
duke@1: * Annotation processing
duke@1: *********************************************************************/
duke@1:
duke@1: /** Queue annotations for later processing. */
duke@1: void annotateLater(final List annotations,
duke@1: final Env localEnv,
duke@1: final Symbol s) {
jfranck@1313: if (annotations.isEmpty()) {
jfranck@1313: return;
jfranck@1313: }
jfranck@1313: if (s.kind != PCK) {
jfranck@1313: s.annotations.reset(); // mark Annotations as incomplete for now
jfranck@1313: }
jfranck@1313: annotate.normal(new Annotate.Annotator() {
jfranck@1313: @Override
duke@1: public String toString() {
duke@1: return "annotate " + annotations + " onto " + s + " in " + s.owner;
duke@1: }
jfranck@1313:
jfranck@1313: @Override
duke@1: public void enterAnnotation() {
jfranck@1313: Assert.check(s.kind == PCK || s.annotations.pendingCompletion());
duke@1: JavaFileObject prev = log.useSource(localEnv.toplevel.sourcefile);
duke@1: try {
jfranck@1313: if (!s.annotations.isEmpty() &&
duke@1: annotations.nonEmpty())
duke@1: log.error(annotations.head.pos,
duke@1: "already.annotated",
mcimadamore@80: kindName(s), s);
jjg@1521: actualEnterAnnotations(annotations, localEnv, s);
duke@1: } finally {
duke@1: log.useSource(prev);
duke@1: }
duke@1: }
duke@1: });
duke@1: }
duke@1:
duke@1: /**
duke@1: * Check if a list of annotations contains a reference to
duke@1: * java.lang.Deprecated.
duke@1: **/
duke@1: private boolean hasDeprecatedAnnotation(List annotations) {
jfranck@1313: for (List al = annotations; !al.isEmpty(); al = al.tail) {
duke@1: JCAnnotation a = al.head;
duke@1: if (a.annotationType.type == syms.deprecatedType && a.args.isEmpty())
duke@1: return true;
duke@1: }
duke@1: return false;
duke@1: }
duke@1:
duke@1: /** Enter a set of annotations. */
jjg@1521: private void actualEnterAnnotations(List annotations,
duke@1: Env env,
duke@1: Symbol s) {
jfranck@1313: Map> annotated =
jfranck@1313: new LinkedHashMap>();
jfranck@1313: Map pos =
jfranck@1313: new HashMap();
jfranck@1313:
jfranck@1313: for (List al = annotations; !al.isEmpty(); al = al.tail) {
duke@1: JCAnnotation a = al.head;
duke@1: Attribute.Compound c = annotate.enterAnnotation(a,
duke@1: syms.annotationType,
duke@1: env);
jfranck@1313: if (c == null) {
jfranck@1313: continue;
jfranck@1313: }
jfranck@1313:
jfranck@1313: if (annotated.containsKey(a.type.tsym)) {
jfranck@1313: if (source.allowRepeatedAnnotations()) {
jfranck@1313: ListBuffer l = annotated.get(a.type.tsym);
jfranck@1313: l = l.append(c);
jfranck@1313: annotated.put(a.type.tsym, l);
jfranck@1313: pos.put(c, a.pos());
jfranck@1313: } else {
jfranck@1313: log.error(a.pos(), "duplicate.annotation");
jfranck@1313: }
jfranck@1313: } else {
jfranck@1313: annotated.put(a.type.tsym, ListBuffer.of(c));
jfranck@1313: pos.put(c, a.pos());
jfranck@1313: }
jfranck@1313:
duke@1: // Note: @Deprecated has no effect on local variables and parameters
duke@1: if (!c.type.isErroneous()
duke@1: && s.owner.kind != MTH
jfranck@1313: && types.isSameType(c.type, syms.deprecatedType)) {
duke@1: s.flags_field |= Flags.DEPRECATED;
jjg@1521: }
jfranck@1313: }
jfranck@1313:
jjg@1521: s.annotations.setDeclarationAttributesWithCompletion(
jjg@1521: annotate.new AnnotateRepeatedContext(env, annotated, pos, log, false));
duke@1: }
duke@1:
duke@1: /** Queue processing of an attribute default value. */
duke@1: void annotateDefaultValueLater(final JCExpression defaultValue,
duke@1: final Env localEnv,
duke@1: final MethodSymbol m) {
jfranck@1313: annotate.normal(new Annotate.Annotator() {
jfranck@1313: @Override
duke@1: public String toString() {
duke@1: return "annotate " + m.owner + "." +
duke@1: m + " default " + defaultValue;
duke@1: }
jfranck@1313:
jfranck@1313: @Override
duke@1: public void enterAnnotation() {
duke@1: JavaFileObject prev = log.useSource(localEnv.toplevel.sourcefile);
duke@1: try {
duke@1: enterDefaultValue(defaultValue, localEnv, m);
duke@1: } finally {
duke@1: log.useSource(prev);
duke@1: }
duke@1: }
duke@1: });
duke@1: }
duke@1:
duke@1: /** Enter a default value for an attribute method. */
duke@1: private void enterDefaultValue(final JCExpression defaultValue,
duke@1: final Env localEnv,
duke@1: final MethodSymbol m) {
duke@1: m.defaultValue = annotate.enterAttributeValue(m.type.getReturnType(),
duke@1: defaultValue,
duke@1: localEnv);
duke@1: }
duke@1:
duke@1: /* ********************************************************************
duke@1: * Source completer
duke@1: *********************************************************************/
duke@1:
duke@1: /** Complete entering a class.
duke@1: * @param sym The symbol of the class to be completed.
duke@1: */
duke@1: public void complete(Symbol sym) throws CompletionFailure {
duke@1: // Suppress some (recursive) MemberEnter invocations
duke@1: if (!completionEnabled) {
duke@1: // Re-install same completer for next time around and return.
jjg@816: Assert.check((sym.flags() & Flags.COMPOUND) == 0);
duke@1: sym.completer = this;
duke@1: return;
duke@1: }
duke@1:
duke@1: ClassSymbol c = (ClassSymbol)sym;
duke@1: ClassType ct = (ClassType)c.type;
duke@1: Env env = enter.typeEnvs.get(c);
duke@1: JCClassDecl tree = (JCClassDecl)env.tree;
duke@1: boolean wasFirst = isFirst;
duke@1: isFirst = false;
duke@1:
duke@1: JavaFileObject prev = log.useSource(env.toplevel.sourcefile);
duke@1: try {
duke@1: // Save class environment for later member enter (2) processing.
duke@1: halfcompleted.append(env);
duke@1:
mcimadamore@92: // Mark class as not yet attributed.
mcimadamore@92: c.flags_field |= UNATTRIBUTED;
mcimadamore@92:
duke@1: // If this is a toplevel-class, make sure any preceding import
duke@1: // clauses have been seen.
duke@1: if (c.owner.kind == PCK) {
jjg@1127: memberEnter(env.toplevel, env.enclosing(TOPLEVEL));
duke@1: todo.append(env);
duke@1: }
duke@1:
duke@1: if (c.owner.kind == TYP)
duke@1: c.owner.complete();
duke@1:
duke@1: // create an environment for evaluating the base clauses
duke@1: Env baseEnv = baseEnv(tree, env);
duke@1:
jjg@1521: if (tree.extending != null)
jjg@1521: typeAnnotate(tree.extending, baseEnv, sym);
jjg@1521: for (JCExpression impl : tree.implementing)
jjg@1521: typeAnnotate(impl, baseEnv, sym);
jjg@1521: annotate.flush();
jjg@1521:
duke@1: // Determine supertype.
duke@1: Type supertype =
duke@1: (tree.extending != null)
duke@1: ? attr.attribBase(tree.extending, baseEnv, true, false, true)
duke@1: : ((tree.mods.flags & Flags.ENUM) != 0 && !target.compilerBootstrap(c))
duke@1: ? attr.attribBase(enumBase(tree.pos, c), baseEnv,
duke@1: true, false, false)
duke@1: : (c.fullname == names.java_lang_Object)
duke@1: ? Type.noType
duke@1: : syms.objectType;
jjg@904: ct.supertype_field = modelMissingTypes(supertype, tree.extending, false);
duke@1:
duke@1: // Determine interfaces.
duke@1: ListBuffer interfaces = new ListBuffer();
jjg@904: ListBuffer all_interfaces = null; // lazy init
duke@1: Set interfaceSet = new HashSet();
duke@1: List interfaceTrees = tree.implementing;
duke@1: if ((tree.mods.flags & Flags.ENUM) != 0 && target.compilerBootstrap(c)) {
duke@1: // add interface Comparable
duke@1: interfaceTrees =
duke@1: interfaceTrees.prepend(make.Type(new ClassType(syms.comparableType.getEnclosingType(),
duke@1: List.of(c.type),
duke@1: syms.comparableType.tsym)));
duke@1: // add interface Serializable
duke@1: interfaceTrees =
duke@1: interfaceTrees.prepend(make.Type(syms.serializableType));
duke@1: }
duke@1: for (JCExpression iface : interfaceTrees) {
duke@1: Type i = attr.attribBase(iface, baseEnv, false, true, true);
jjg@1374: if (i.hasTag(CLASS)) {
duke@1: interfaces.append(i);
jjg@904: if (all_interfaces != null) all_interfaces.append(i);
duke@1: chk.checkNotRepeated(iface.pos(), types.erasure(i), interfaceSet);
jjg@904: } else {
jjg@904: if (all_interfaces == null)
jjg@904: all_interfaces = new ListBuffer().appendList(interfaces);
jjg@904: all_interfaces.append(modelMissingTypes(i, iface, true));
duke@1: }
duke@1: }
jjg@904: if ((c.flags_field & ANNOTATION) != 0) {
duke@1: ct.interfaces_field = List.of(syms.annotationType);
jjg@904: ct.all_interfaces_field = ct.interfaces_field;
jjg@904: } else {
duke@1: ct.interfaces_field = interfaces.toList();
jjg@904: ct.all_interfaces_field = (all_interfaces == null)
jjg@904: ? ct.interfaces_field : all_interfaces.toList();
jjg@904: }
duke@1:
duke@1: if (c.fullname == names.java_lang_Object) {
duke@1: if (tree.extending != null) {
duke@1: chk.checkNonCyclic(tree.extending.pos(),
duke@1: supertype);
duke@1: ct.supertype_field = Type.noType;
duke@1: }
duke@1: else if (tree.implementing.nonEmpty()) {
duke@1: chk.checkNonCyclic(tree.implementing.head.pos(),
duke@1: ct.interfaces_field.head);
duke@1: ct.interfaces_field = List.nil();
duke@1: }
duke@1: }
duke@1:
duke@1: // Annotations.
duke@1: // In general, we cannot fully process annotations yet, but we
duke@1: // can attribute the annotation types and then check to see if the
duke@1: // @Deprecated annotation is present.
duke@1: attr.attribAnnotationTypes(tree.mods.annotations, baseEnv);
duke@1: if (hasDeprecatedAnnotation(tree.mods.annotations))
duke@1: c.flags_field |= DEPRECATED;
duke@1: annotateLater(tree.mods.annotations, baseEnv, c);
jjg@1521: // class type parameters use baseEnv but everything uses env
duke@1:
mcimadamore@690: chk.checkNonCyclicDecl(tree);
mcimadamore@8:
duke@1: attr.attribTypeVariables(tree.typarams, baseEnv);
jjg@1521: // Do this here, where we have the symbol.
jjg@1521: for (JCTypeParameter tp : tree.typarams)
jjg@1521: typeAnnotate(tp, baseEnv, sym);
jjg@1521: annotate.flush();
duke@1:
duke@1: // Add default constructor if needed.
duke@1: if ((c.flags() & INTERFACE) == 0 &&
duke@1: !TreeInfo.hasConstructors(tree.defs)) {
duke@1: List argtypes = List.nil();
duke@1: List typarams = List.nil();
duke@1: List thrown = List.nil();
duke@1: long ctorFlags = 0;
duke@1: boolean based = false;
mcimadamore@1341: boolean addConstructor = true;
jjg@113: if (c.name.isEmpty()) {
duke@1: JCNewClass nc = (JCNewClass)env.next.tree;
duke@1: if (nc.constructor != null) {
mcimadamore@1341: addConstructor = nc.constructor.kind != ERR;
duke@1: Type superConstrType = types.memberType(c.type,
duke@1: nc.constructor);
duke@1: argtypes = superConstrType.getParameterTypes();
duke@1: typarams = superConstrType.getTypeArguments();
duke@1: ctorFlags = nc.constructor.flags() & VARARGS;
duke@1: if (nc.encl != null) {
duke@1: argtypes = argtypes.prepend(nc.encl.type);
duke@1: based = true;
duke@1: }
duke@1: thrown = superConstrType.getThrownTypes();
duke@1: }
duke@1: }
mcimadamore@1341: if (addConstructor) {
mcimadamore@1341: JCTree constrDef = DefaultConstructor(make.at(tree.pos), c,
mcimadamore@1341: typarams, argtypes, thrown,
mcimadamore@1341: ctorFlags, based);
mcimadamore@1341: tree.defs = tree.defs.prepend(constrDef);
mcimadamore@1341: }
duke@1: }
duke@1:
mcimadamore@1393: // enter symbols for 'this' into current scope.
mcimadamore@1393: VarSymbol thisSym =
mcimadamore@1393: new VarSymbol(FINAL | HASINIT, names._this, c.type, c);
mcimadamore@1393: thisSym.pos = Position.FIRSTPOS;
mcimadamore@1393: env.info.scope.enter(thisSym);
mcimadamore@1393: // if this is a class, enter symbol for 'super' into current scope.
mcimadamore@1393: if ((c.flags_field & INTERFACE) == 0 &&
mcimadamore@1393: ct.supertype_field.hasTag(CLASS)) {
mcimadamore@1393: VarSymbol superSym =
mcimadamore@1393: new VarSymbol(FINAL | HASINIT, names._super,
mcimadamore@1393: ct.supertype_field, c);
mcimadamore@1393: superSym.pos = Position.FIRSTPOS;
mcimadamore@1393: env.info.scope.enter(superSym);
duke@1: }
duke@1:
duke@1: // check that no package exists with same fully qualified name,
duke@1: // but admit classes in the unnamed package which have the same
duke@1: // name as a top-level package.
duke@1: if (checkClash &&
duke@1: c.owner.kind == PCK && c.owner != syms.unnamedPackage &&
ohrstrom@1384: reader.packageExists(c.fullname)) {
ohrstrom@1384: log.error(tree.pos, "clash.with.pkg.of.same.name", Kinds.kindName(sym), c);
ohrstrom@1384: }
ohrstrom@1384: if (c.owner.kind == PCK && (c.flags_field & PUBLIC) == 0 &&
ohrstrom@1384: !env.toplevel.sourcefile.isNameCompatible(c.name.toString(),JavaFileObject.Kind.SOURCE)) {
ohrstrom@1384: c.flags_field |= AUXILIARY;
ohrstrom@1384: }
duke@1: } catch (CompletionFailure ex) {
duke@1: chk.completionError(tree.pos(), ex);
duke@1: } finally {
duke@1: log.useSource(prev);
duke@1: }
duke@1:
duke@1: // Enter all member fields and methods of a set of half completed
duke@1: // classes in a second phase.
duke@1: if (wasFirst) {
duke@1: try {
duke@1: while (halfcompleted.nonEmpty()) {
duke@1: finish(halfcompleted.next());
duke@1: }
duke@1: } finally {
duke@1: isFirst = true;
duke@1: }
jjg@1521: }
jjg@1521: annotate.afterRepeated(TypeAnnotations.organizeTypeAnnotationsSignatures(syms, names, log, tree));
jjg@1521: }
duke@1:
jjg@1521: private void actualEnterTypeAnnotations(final List annotations,
jjg@1521: final Env env,
jjg@1521: final Symbol s) {
jjg@1521: Map> annotated =
jjg@1521: new LinkedHashMap>();
jjg@1521: Map pos =
jjg@1521: new HashMap();
jjg@1521:
jjg@1521: for (List al = annotations; !al.isEmpty(); al = al.tail) {
jjg@1521: JCAnnotation a = al.head;
jjg@1521: Attribute.TypeCompound tc = annotate.enterTypeAnnotation(a,
jjg@1521: syms.annotationType,
jjg@1521: env);
jjg@1521: if (tc == null) {
jjg@1521: continue;
jjg@1521: }
jjg@1521:
jjg@1521: if (annotated.containsKey(a.type.tsym)) {
jjg@1521: if (source.allowRepeatedAnnotations()) {
jjg@1521: ListBuffer l = annotated.get(a.type.tsym);
jjg@1521: l = l.append(tc);
jjg@1521: annotated.put(a.type.tsym, l);
jjg@1521: pos.put(tc, a.pos());
jjg@1521: } else {
jjg@1521: log.error(a.pos(), "duplicate.annotation");
jjg@1521: }
jjg@1521: } else {
jjg@1521: annotated.put(a.type.tsym, ListBuffer.of(tc));
jjg@1521: pos.put(tc, a.pos());
jjg@1521: }
jjg@1521: }
jjg@1521:
jjg@1521: s.annotations.appendTypeAttributesWithCompletion(
jjg@1521: annotate.new AnnotateRepeatedContext(env, annotated, pos, log, true));
jjg@1521: }
jjg@1521:
jjg@1521: public void typeAnnotate(final JCTree tree, final Env env, final Symbol sym) {
jjg@1521: tree.accept(new TypeAnnotate(env, sym));
jjg@1521: }
jjg@1521:
jjg@1521: /**
jjg@1521: * We need to use a TreeScanner, because it is not enough to visit the top-level
jjg@1521: * annotations. We also need to visit type arguments, etc.
jjg@1521: */
jjg@1521: private class TypeAnnotate extends TreeScanner {
jjg@1521: private Env env;
jjg@1521: private Symbol sym;
jjg@1521:
jjg@1521: public TypeAnnotate(final Env env, final Symbol sym) {
jjg@1521: this.env = env;
jjg@1521: this.sym = sym;
jjg@1521: }
jjg@1521:
jjg@1521: void annotateTypeLater(final List annotations) {
jjg@1521: if (annotations.isEmpty()) {
jjg@1521: return;
jjg@1521: }
jjg@1521:
jjg@1521: annotate.normal(new Annotate.Annotator() {
jjg@1521: @Override
jjg@1521: public String toString() {
jjg@1521: return "type annotate " + annotations + " onto " + sym + " in " + sym.owner;
jjg@1521: }
jjg@1521: @Override
jjg@1521: public void enterAnnotation() {
jjg@1521: JavaFileObject prev = log.useSource(env.toplevel.sourcefile);
jjg@1521: try {
jjg@1521: actualEnterTypeAnnotations(annotations, env, sym);
jjg@1521: } finally {
jjg@1521: log.useSource(prev);
jjg@1521: }
jjg@1521: }
jjg@1521: });
jjg@1521: }
jjg@1521:
jjg@1521: @Override
jjg@1521: public void visitAnnotatedType(final JCAnnotatedType tree) {
jjg@1521: annotateTypeLater(tree.annotations);
jjg@1521: super.visitAnnotatedType(tree);
jjg@1521: }
jjg@1521:
jjg@1521: @Override
jjg@1521: public void visitTypeParameter(final JCTypeParameter tree) {
jjg@1521: annotateTypeLater(tree.annotations);
jjg@1521: super.visitTypeParameter(tree);
jjg@1521: }
jjg@1521:
jjg@1521: @Override
jjg@1521: public void visitNewArray(final JCNewArray tree) {
jjg@1521: annotateTypeLater(tree.annotations);
jjg@1521: for (List dimAnnos : tree.dimAnnotations)
jjg@1521: annotateTypeLater(dimAnnos);
jjg@1521: super.visitNewArray(tree);
jjg@1521: }
jjg@1521:
jjg@1521: @Override
jjg@1521: public void visitMethodDef(final JCMethodDecl tree) {
jjg@1521: scan(tree.mods);
jjg@1521: scan(tree.restype);
jjg@1521: scan(tree.typarams);
jjg@1521: scan(tree.recvparam);
jjg@1521: scan(tree.params);
jjg@1521: scan(tree.thrown);
jjg@1521: scan(tree.defaultValue);
jjg@1521: // Do not annotate the body, just the signature.
jjg@1521: // scan(tree.body);
duke@1: }
duke@1: }
duke@1:
jjg@1521:
duke@1: private Env baseEnv(JCClassDecl tree, Env env) {
mcimadamore@858: Scope baseScope = new Scope(tree.sym);
mcimadamore@639: //import already entered local classes into base scope
mcimadamore@639: for (Scope.Entry e = env.outer.info.scope.elems ; e != null ; e = e.sibling) {
mcimadamore@639: if (e.sym.isLocal()) {
mcimadamore@639: baseScope.enter(e.sym);
mcimadamore@639: }
mcimadamore@639: }
mcimadamore@639: //import current type-parameters into base scope
duke@1: if (tree.typarams != null)
duke@1: for (List typarams = tree.typarams;
duke@1: typarams.nonEmpty();
duke@1: typarams = typarams.tail)
mcimadamore@639: baseScope.enter(typarams.head.type.tsym);
duke@1: Env outer = env.outer; // the base clause can't see members of this class
mcimadamore@639: Env localEnv = outer.dup(tree, outer.info.dup(baseScope));
duke@1: localEnv.baseClause = true;
duke@1: localEnv.outer = outer;
duke@1: localEnv.info.isSelfCall = false;
duke@1: return localEnv;
duke@1: }
duke@1:
duke@1: /** Enter member fields and methods of a class
duke@1: * @param env the environment current for the class block.
duke@1: */
duke@1: private void finish(Env env) {
duke@1: JavaFileObject prev = log.useSource(env.toplevel.sourcefile);
duke@1: try {
duke@1: JCClassDecl tree = (JCClassDecl)env.tree;
duke@1: finishClass(tree, env);
duke@1: } finally {
duke@1: log.useSource(prev);
duke@1: }
duke@1: }
duke@1:
duke@1: /** Generate a base clause for an enum type.
duke@1: * @param pos The position for trees and diagnostics, if any
duke@1: * @param c The class symbol of the enum
duke@1: */
duke@1: private JCExpression enumBase(int pos, ClassSymbol c) {
duke@1: JCExpression result = make.at(pos).
duke@1: TypeApply(make.QualIdent(syms.enumSym),
duke@1: List.of(make.Type(c.type)));
duke@1: return result;
duke@1: }
duke@1:
jjg@904: Type modelMissingTypes(Type t, final JCExpression tree, final boolean interfaceExpected) {
jjg@1374: if (!t.hasTag(ERROR))
jjg@904: return t;
jjg@904:
jjg@904: return new ErrorType(((ErrorType) t).getOriginalType(), t.tsym) {
jjg@904: private Type modelType;
jjg@904:
jjg@904: @Override
jjg@904: public Type getModelType() {
jjg@904: if (modelType == null)
jjg@904: modelType = new Synthesizer(getOriginalType(), interfaceExpected).visit(tree);
jjg@904: return modelType;
jjg@904: }
jjg@904: };
jjg@904: }
jjg@904: // where
jjg@904: private class Synthesizer extends JCTree.Visitor {
jjg@904: Type originalType;
jjg@904: boolean interfaceExpected;
jjg@904: List synthesizedSymbols = List.nil();
jjg@904: Type result;
jjg@904:
jjg@904: Synthesizer(Type originalType, boolean interfaceExpected) {
jjg@904: this.originalType = originalType;
jjg@904: this.interfaceExpected = interfaceExpected;
jjg@904: }
jjg@904:
jjg@904: Type visit(JCTree tree) {
jjg@904: tree.accept(this);
jjg@904: return result;
jjg@904: }
jjg@904:
jjg@904: List visit(List extends JCTree> trees) {
jjg@904: ListBuffer lb = new ListBuffer();
jjg@904: for (JCTree t: trees)
jjg@904: lb.append(visit(t));
jjg@904: return lb.toList();
jjg@904: }
jjg@904:
jjg@904: @Override
jjg@904: public void visitTree(JCTree tree) {
jjg@904: result = syms.errType;
jjg@904: }
jjg@904:
jjg@904: @Override
jjg@904: public void visitIdent(JCIdent tree) {
jjg@1374: if (!tree.type.hasTag(ERROR)) {
jjg@904: result = tree.type;
jjg@904: } else {
jjg@904: result = synthesizeClass(tree.name, syms.unnamedPackage).type;
jjg@904: }
jjg@904: }
jjg@904:
jjg@904: @Override
jjg@904: public void visitSelect(JCFieldAccess tree) {
jjg@1374: if (!tree.type.hasTag(ERROR)) {
jjg@904: result = tree.type;
jjg@904: } else {
jjg@904: Type selectedType;
jjg@904: boolean prev = interfaceExpected;
jjg@904: try {
jjg@904: interfaceExpected = false;
jjg@904: selectedType = visit(tree.selected);
jjg@904: } finally {
jjg@904: interfaceExpected = prev;
jjg@904: }
jjg@904: ClassSymbol c = synthesizeClass(tree.name, selectedType.tsym);
jjg@904: result = c.type;
jjg@904: }
jjg@904: }
jjg@904:
jjg@904: @Override
jjg@904: public void visitTypeApply(JCTypeApply tree) {
jjg@1374: if (!tree.type.hasTag(ERROR)) {
jjg@904: result = tree.type;
jjg@904: } else {
jjg@904: ClassType clazzType = (ClassType) visit(tree.clazz);
jjg@904: if (synthesizedSymbols.contains(clazzType.tsym))
jjg@904: synthesizeTyparams((ClassSymbol) clazzType.tsym, tree.arguments.size());
jjg@904: final List actuals = visit(tree.arguments);
jjg@904: result = new ErrorType(tree.type, clazzType.tsym) {
jjg@904: @Override
jjg@904: public List getTypeArguments() {
jjg@904: return actuals;
jjg@904: }
jjg@904: };
jjg@904: }
jjg@904: }
jjg@904:
jjg@904: ClassSymbol synthesizeClass(Name name, Symbol owner) {
jjg@904: int flags = interfaceExpected ? INTERFACE : 0;
jjg@904: ClassSymbol c = new ClassSymbol(flags, name, owner);
jjg@904: c.members_field = new Scope.ErrorScope(c);
jjg@904: c.type = new ErrorType(originalType, c) {
jjg@904: @Override
jjg@904: public List getTypeArguments() {
jjg@904: return typarams_field;
jjg@904: }
jjg@904: };
jjg@904: synthesizedSymbols = synthesizedSymbols.prepend(c);
jjg@904: return c;
jjg@904: }
jjg@904:
jjg@904: void synthesizeTyparams(ClassSymbol sym, int n) {
jjg@904: ClassType ct = (ClassType) sym.type;
jjg@904: Assert.check(ct.typarams_field.isEmpty());
jjg@904: if (n == 1) {
jjg@904: TypeVar v = new TypeVar(names.fromString("T"), sym, syms.botType);
jjg@904: ct.typarams_field = ct.typarams_field.prepend(v);
jjg@904: } else {
jjg@904: for (int i = n; i > 0; i--) {
jjg@904: TypeVar v = new TypeVar(names.fromString("T" + i), sym, syms.botType);
jjg@904: ct.typarams_field = ct.typarams_field.prepend(v);
jjg@904: }
jjg@904: }
jjg@904: }
jjg@904: }
jjg@904:
jjg@904:
duke@1: /* ***************************************************************************
duke@1: * tree building
duke@1: ****************************************************************************/
duke@1:
duke@1: /** Generate default constructor for given class. For classes different
duke@1: * from java.lang.Object, this is:
duke@1: *
duke@1: * c(argtype_0 x_0, ..., argtype_n x_n) throws thrown {
duke@1: * super(x_0, ..., x_n)
duke@1: * }
duke@1: *
duke@1: * or, if based == true:
duke@1: *
duke@1: * c(argtype_0 x_0, ..., argtype_n x_n) throws thrown {
duke@1: * x_0.super(x_1, ..., x_n)
duke@1: * }
duke@1: *
duke@1: * @param make The tree factory.
duke@1: * @param c The class owning the default constructor.
duke@1: * @param argtypes The parameter types of the constructor.
duke@1: * @param thrown The thrown exceptions of the constructor.
duke@1: * @param based Is first parameter a this$n?
duke@1: */
duke@1: JCTree DefaultConstructor(TreeMaker make,
duke@1: ClassSymbol c,
duke@1: List typarams,
duke@1: List argtypes,
duke@1: List thrown,
duke@1: long flags,
duke@1: boolean based) {
duke@1: List params = make.Params(argtypes, syms.noSymbol);
duke@1: List stats = List.nil();
duke@1: if (c.type != syms.objectType)
duke@1: stats = stats.prepend(SuperCall(make, typarams, params, based));
duke@1: if ((c.flags() & ENUM) != 0 &&
duke@1: (types.supertype(c.type).tsym == syms.enumSym ||
duke@1: target.compilerBootstrap(c))) {
duke@1: // constructors of true enums are private
duke@1: flags = (flags & ~AccessFlags) | PRIVATE | GENERATEDCONSTR;
duke@1: } else
duke@1: flags |= (c.flags() & AccessFlags) | GENERATEDCONSTR;
jjg@113: if (c.name.isEmpty()) flags |= ANONCONSTR;
duke@1: JCTree result = make.MethodDef(
duke@1: make.Modifiers(flags),
duke@1: names.init,
duke@1: null,
duke@1: make.TypeParams(typarams),
duke@1: params,
duke@1: make.Types(thrown),
duke@1: make.Block(0, stats),
duke@1: null);
duke@1: return result;
duke@1: }
duke@1:
duke@1: /** Generate call to superclass constructor. This is:
duke@1: *
duke@1: * super(id_0, ..., id_n)
duke@1: *
duke@1: * or, if based == true
duke@1: *
duke@1: * id_0.super(id_1,...,id_n)
duke@1: *
duke@1: * where id_0, ..., id_n are the names of the given parameters.
duke@1: *
duke@1: * @param make The tree factory
duke@1: * @param params The parameters that need to be passed to super
duke@1: * @param typarams The type parameters that need to be passed to super
duke@1: * @param based Is first parameter a this$n?
duke@1: */
duke@1: JCExpressionStatement SuperCall(TreeMaker make,
duke@1: List typarams,
duke@1: List params,
duke@1: boolean based) {
duke@1: JCExpression meth;
duke@1: if (based) {
duke@1: meth = make.Select(make.Ident(params.head), names._super);
duke@1: params = params.tail;
duke@1: } else {
duke@1: meth = make.Ident(names._super);
duke@1: }
duke@1: List typeargs = typarams.nonEmpty() ? make.Types(typarams) : null;
duke@1: return make.Exec(make.Apply(typeargs, meth, make.Idents(params)));
duke@1: }
duke@1: }