4e6d851f3f
Reviewed-by: asotona, vromero, mcimadamore
247 lines
8.0 KiB
Java
247 lines
8.0 KiB
Java
/*
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* Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 7021183 7025809
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* @summary 269: assertion failure getting enclosing element of an undefined name
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* @modules jdk.compiler/com.sun.tools.javac.code:+open
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* jdk.compiler/com.sun.tools.javac.file
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* jdk.compiler/com.sun.tools.javac.main
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* jdk.compiler/com.sun.tools.javac.model
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* jdk.compiler/com.sun.tools.javac.util
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*/
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import java.lang.reflect.Field;
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import javax.lang.model.element.Element;
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import javax.lang.model.element.ExecutableElement;
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import javax.lang.model.element.ModuleElement;
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import javax.lang.model.element.PackageElement;
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import javax.lang.model.element.TypeElement;
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import javax.lang.model.element.TypeParameterElement;
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import javax.lang.model.element.UnknownElementException;
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import javax.lang.model.element.VariableElement;
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import javax.lang.model.type.TypeMirror;
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import javax.lang.model.type.UnknownTypeException;
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import javax.lang.model.util.*;
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import com.sun.tools.javac.code.Symbol.ClassSymbol;
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import com.sun.tools.javac.code.Symtab;
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import com.sun.tools.javac.file.JavacFileManager;
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import com.sun.tools.javac.main.JavaCompiler;
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import com.sun.tools.javac.model.JavacTypes;
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import com.sun.tools.javac.util.Context;
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/**
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* Scan javac Symtab looking for TypeMirrors and Elements, and ensure that
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* no exceptions are thrown when used with javax.lang.model visitors.
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*
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*/
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public class TestSymtabItems {
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public static void main(String... args) throws Exception {
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new TestSymtabItems().run();
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}
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void run() throws Exception {
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Context c = new Context();
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JavacFileManager.preRegister(c);
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Symtab syms = Symtab.instance(c);
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JavacTypes types = JavacTypes.instance(c);
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JavaCompiler.instance(c); // will init ClassReader.sourceCompleter
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// print("noSymbol", syms.noSymbol);
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// print("errSymbol", syms.errSymbol);
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// print("unknownSymbol", syms.unknownSymbol);
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// print("botType", syms.botType);
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// print("errType", syms.errType);
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// print("unknownType", syms.unknownType);
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for (Field f: Symtab.class.getDeclaredFields()) {
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// System.err.println(f.getType() + " " + f.getName());
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// Temporarily ignore methodHandle and transientMethodHandle
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// during API evolution
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if (f.getName().toLowerCase().contains("methodhandle"))
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continue;
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// Temporarily ignore java.io.IO:
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if (f.getName().equals("ioType"))
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continue;
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//both noModule and unnamedModule claim the unnamed package, ignore noModule for now:
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if (f.getName().equals("noModule"))
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continue;
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f.setAccessible(true);
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Class<?> ft = f.getType();
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if (TypeMirror.class.isAssignableFrom(ft))
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print(f.getName(), (TypeMirror) f.get(syms), types);
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else if(Element.class.isAssignableFrom(ft))
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print(f.getName(), (Element) f.get(syms));
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}
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if (errors > 0)
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throw new Exception(errors + " errors occurred");
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}
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void print(String label, Element e) {
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ElemPrinter ep = new ElemPrinter();
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System.err.println("Test " + label);
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ep.visit(e);
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System.err.println();
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}
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void print(String label, TypeMirror t, Types types) {
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TypePrinter tp = new TypePrinter();
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System.err.println("Test " + label);
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tp.visit(t, types);
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System.err.println();
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}
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void error(String msg) {
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System.err.println("Error: " + msg);
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errors++;
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}
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int errors;
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class ElemPrinter extends ElementScanner14<Void, Void> {
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@Override
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public Void visitModule(ModuleElement e, Void p) {
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show("module", e);
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indent(+1);
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super.visitModule(e, p);
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indent(-1);
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return null;
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}
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@Override
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public Void visitPackage(PackageElement e, Void p) {
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show("package", e);
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indent(+1);
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super.visitPackage(e, p);
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indent(-1);
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return null;
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}
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@Override
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public Void visitType(TypeElement e, Void p) {
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show("type", e);
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indent(+1);
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super.visitType(e, p);
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indent(-1);
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return null;
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}
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@Override
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public Void visitVariable(VariableElement e, Void p) {
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show("variable", e);
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indent(+1);
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super.visitVariable(e, p);
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indent(-1);
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return null;
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}
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@Override
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public Void visitExecutable(ExecutableElement e, Void p) {
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show("executable", e);
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indent(+1);
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super.visitExecutable(e, p);
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indent(-1);
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return null;
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}
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@Override
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public Void visitTypeParameter(TypeParameterElement e, Void p) {
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show("type parameter", e);
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indent(+1);
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super.visitTypeParameter(e, p);
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indent(-1);
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return null;
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}
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@Override
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public Void visitUnknown(Element e, Void p) {
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show("unknown", e);
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indent(+1);
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try {
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super.visitUnknown(e, p);
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} catch (UnknownElementException ex) {
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System.err.println("caught " + ex);
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}
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indent(-1);
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return null;
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}
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void indent(int i) {
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indent += i;
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}
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String sp(int w) {
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < w; i++)
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sb.append(" ");
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return sb.toString();
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}
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void show(String label, Element e) {
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System.err.println(sp(indent) + label
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+ ": mods:" + e.getModifiers()
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+ " " + e.getSimpleName()
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+ ", kind: " + e.getKind()
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+ ", type: " + e.asType()
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+ ", encl: " + e.getEnclosingElement());
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// The following checks help establish why NPE might occur when trying to scan children
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if (e instanceof ClassSymbol) {
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ClassSymbol csym = (ClassSymbol) e;
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if (csym.members_field == null)
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error("members_field is null");
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if (csym.type == null)
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System.err.println("type is null");
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}
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}
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int indent;
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};
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class TypePrinter extends SimpleTypeVisitor14<Void, Types> {
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@Override
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public Void defaultAction(TypeMirror m, Types types) {
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System.err.println(m.getKind() + " " + m + " " + types.asElement(m));
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return null;
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}
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@Override
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public Void visitUnknown(TypeMirror t, Types types) {
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try {
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return super.visitUnknown(t, types);
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} catch (UnknownTypeException ex) {
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System.err.println("caught " + ex);
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return null;
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}
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}
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};
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}
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