| /* |
| * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 7021183 7025809 |
| * @summary 269: assertion failure getting enclosing element of an undefined name |
| */ |
| |
| import java.lang.reflect.Field; |
| import javax.lang.model.element.Element; |
| import javax.lang.model.element.ExecutableElement; |
| import javax.lang.model.element.PackageElement; |
| import javax.lang.model.element.TypeElement; |
| import javax.lang.model.element.TypeParameterElement; |
| import javax.lang.model.element.UnknownElementException; |
| import javax.lang.model.element.VariableElement; |
| import javax.lang.model.type.TypeMirror; |
| import javax.lang.model.type.UnknownTypeException; |
| import javax.lang.model.util.*; |
| |
| import com.sun.tools.javac.code.Symbol.ClassSymbol; |
| import com.sun.tools.javac.code.Symtab; |
| import com.sun.tools.javac.file.JavacFileManager; |
| import com.sun.tools.javac.main.JavaCompiler; |
| import com.sun.tools.javac.model.JavacTypes; |
| import com.sun.tools.javac.util.Context; |
| |
| /** |
| * Scan javac Symtab looking for TypeMirrors and Elements, and ensure that |
| * no exceptions are thrown when used with javax.lang.model visitors. |
| * |
| */ |
| public class TestSymtabItems { |
| public static void main(String... args) throws Exception { |
| new TestSymtabItems().run(); |
| } |
| |
| void run() throws Exception { |
| Context c = new Context(); |
| JavacFileManager.preRegister(c); |
| Symtab syms = Symtab.instance(c); |
| JavacTypes types = JavacTypes.instance(c); |
| JavaCompiler.instance(c); // will init ClassReader.sourceCompleter |
| |
| // print("noSymbol", syms.noSymbol); |
| // print("errSymbol", syms.errSymbol); |
| // print("unknownSymbol", syms.unknownSymbol); |
| // print("botType", syms.botType); |
| // print("errType", syms.errType); |
| // print("unknownType", syms.unknownType); |
| |
| for (Field f: Symtab.class.getDeclaredFields()) { |
| // System.err.println(f.getType() + " " + f.getName()); |
| |
| // Temporarily ignore methodHandle and transientMethodHandle |
| // during API evolution |
| if (f.getName().toLowerCase().contains("methodhandle")) |
| continue; |
| |
| Class<?> ft = f.getType(); |
| if (TypeMirror.class.isAssignableFrom(ft)) |
| print(f.getName(), (TypeMirror) f.get(syms), types); |
| else if(Element.class.isAssignableFrom(ft)) |
| print(f.getName(), (Element) f.get(syms)); |
| } |
| |
| if (errors > 0) |
| throw new Exception(errors + " errors occurred"); |
| } |
| |
| void print(String label, Element e) { |
| ElemPrinter ep = new ElemPrinter(); |
| System.err.println("Test " + label); |
| ep.visit(e); |
| System.err.println(); |
| } |
| |
| void print(String label, TypeMirror t, Types types) { |
| TypePrinter tp = new TypePrinter(); |
| System.err.println("Test " + label); |
| tp.visit(t, types); |
| System.err.println(); |
| } |
| |
| void error(String msg) { |
| System.err.println("Error: " + msg); |
| errors++; |
| } |
| |
| int errors; |
| |
| class ElemPrinter extends ElementScanner8<Void, Void> { |
| @Override |
| public Void visitPackage(PackageElement e, Void p) { |
| show("package", e); |
| indent(+1); |
| super.visitPackage(e, p); |
| indent(-1); |
| return null; |
| } |
| |
| @Override |
| public Void visitType(TypeElement e, Void p) { |
| show("type", e); |
| indent(+1); |
| super.visitType(e, p); |
| indent(-1); |
| return null; |
| } |
| |
| @Override |
| public Void visitVariable(VariableElement e, Void p) { |
| show("variable", e); |
| indent(+1); |
| super.visitVariable(e, p); |
| indent(-1); |
| return null; |
| } |
| |
| @Override |
| public Void visitExecutable(ExecutableElement e, Void p) { |
| show("executable", e); |
| indent(+1); |
| super.visitExecutable(e, p); |
| indent(-1); |
| return null; |
| } |
| |
| @Override |
| public Void visitTypeParameter(TypeParameterElement e, Void p) { |
| show("type parameter", e); |
| indent(+1); |
| super.visitTypeParameter(e, p); |
| indent(-1); |
| return null; |
| } |
| |
| @Override |
| public Void visitUnknown(Element e, Void p) { |
| show("unknown", e); |
| indent(+1); |
| try { |
| super.visitUnknown(e, p); |
| } catch (UnknownElementException ex) { |
| System.err.println("caught " + ex); |
| } |
| indent(-1); |
| return null; |
| } |
| |
| void indent(int i) { |
| indent += i; |
| } |
| |
| String sp(int w) { |
| StringBuilder sb = new StringBuilder(); |
| for (int i = 0; i < w; i++) |
| sb.append(" "); |
| return sb.toString(); |
| } |
| |
| void show(String label, Element e) { |
| System.err.println(sp(indent) + label |
| + ": mods:" + e.getModifiers() |
| + " " + e.getSimpleName() |
| + ", kind: " + e.getKind() |
| + ", type: " + e.asType() |
| + ", encl: " + e.getEnclosingElement()); |
| |
| // The following checks help establish why NPE might occur when trying to scan children |
| if (e instanceof ClassSymbol) { |
| ClassSymbol csym = (ClassSymbol) e; |
| if (csym.members_field == null) |
| error("members_field is null"); |
| if (csym.type == null) |
| System.err.println("type is null"); |
| } |
| } |
| |
| int indent; |
| }; |
| |
| class TypePrinter extends SimpleTypeVisitor7<Void, Types> { |
| @Override |
| public Void defaultAction(TypeMirror m, Types types) { |
| System.err.println(m.getKind() + " " + m + " " + types.asElement(m)); |
| return null; |
| } |
| |
| @Override |
| public Void visitUnknown(TypeMirror t, Types types) { |
| try { |
| return super.visitUnknown(t, types); |
| } catch (UnknownTypeException ex) { |
| System.err.println("caught " + ex); |
| return null; |
| } |
| } |
| }; |
| } |