229 lines
7.8 KiB
Java
229 lines
7.8 KiB
Java
/*
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* Copyright (c) 2012, 2015, 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 8129547
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* @summary Excess entries in BootstrapMethods with the same (bsm, bsmKind, bsmStaticArgs), but different dynamicArgs
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* @library /tools/javac/lib
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* @enablePreview
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* @modules java.base/jdk.internal.classfile.impl
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* jdk.compiler/com.sun.tools.javac.api
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* jdk.compiler/com.sun.tools.javac.code
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* jdk.compiler/com.sun.tools.javac.jvm
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* jdk.compiler/com.sun.tools.javac.tree
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* jdk.compiler/com.sun.tools.javac.util
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*/
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import java.io.File;
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import java.net.URI;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Locale;
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import javax.tools.Diagnostic;
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import javax.tools.JavaCompiler;
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import javax.tools.JavaFileObject;
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import javax.tools.SimpleJavaFileObject;
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import javax.tools.ToolProvider;
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import com.sun.source.tree.MethodInvocationTree;
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import com.sun.source.tree.MethodTree;
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import com.sun.source.util.TaskEvent;
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import com.sun.source.util.TaskListener;
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import com.sun.source.util.TreeScanner;
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import java.lang.classfile.*;
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import java.lang.classfile.attribute.BootstrapMethodsAttribute;
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import com.sun.tools.javac.api.JavacTaskImpl;
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import com.sun.tools.javac.code.Symbol;
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import com.sun.tools.javac.code.Symbol.MethodSymbol;
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import com.sun.tools.javac.code.Symtab;
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import com.sun.tools.javac.code.Types;
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import com.sun.tools.javac.jvm.PoolConstant.LoadableConstant;
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import com.sun.tools.javac.tree.JCTree.JCMethodInvocation;
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import com.sun.tools.javac.tree.JCTree.JCMethodDecl;
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import com.sun.tools.javac.tree.JCTree.JCIdent;
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import com.sun.tools.javac.util.Context;
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import com.sun.tools.javac.util.Names;
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import static com.sun.tools.javac.jvm.ClassFile.*;
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public class TestBootstrapMethodsCount {
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public static void main(String... args) throws Exception {
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JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
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new TestBootstrapMethodsCount().run(comp);
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}
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DiagChecker dc;
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TestBootstrapMethodsCount() {
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dc = new DiagChecker();
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}
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public void run(JavaCompiler comp) {
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JavaSource source = new JavaSource();
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JavacTaskImpl ct = (JavacTaskImpl)comp.getTask(null, null, dc,
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Arrays.asList("-g"), null, Arrays.asList(source));
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Context context = ct.getContext();
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Symtab syms = Symtab.instance(context);
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Names names = Names.instance(context);
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Types types = Types.instance(context);
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ct.addTaskListener(new Indifier(syms, names, types));
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try {
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ct.generate();
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} catch (Throwable t) {
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t.printStackTrace();
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throw new AssertionError(
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String.format("Error thrown when compiling following code\n%s",
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source.source));
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}
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if (dc.diagFound) {
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throw new AssertionError(
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String.format("Diags found when compiling following code\n%s\n\n%s",
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source.source, dc.printDiags()));
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}
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verifyBytecode();
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}
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void verifyBytecode() {
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File compiledTest = new File("Test.class");
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try {
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ClassModel cf = ClassFile.of().parse(compiledTest.toPath());
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BootstrapMethodsAttribute bsm_attr = cf.findAttribute(Attributes.bootstrapMethods()).orElseThrow();
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int length = bsm_attr.bootstrapMethodsSize();
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if (length != 1) {
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throw new Error("Bad number of method specifiers " +
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"in BootstrapMethods attribute: " + length);
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}
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} catch (Exception e) {
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e.printStackTrace();
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throw new Error("error reading " + compiledTest +": " + e);
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}
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}
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class JavaSource extends SimpleJavaFileObject {
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static final String source = "import java.lang.invoke.*;\n" +
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"class Bootstrap {\n" +
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" public static CallSite bsm(MethodHandles.Lookup lookup, " +
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"String name, MethodType methodType) {\n" +
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" return null;\n" +
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" }\n" +
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"}\n" +
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"class Test {\n" +
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" void m1() { }\n" +
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" void m2(Object arg1) { }\n" +
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" void test1() {\n" +
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" Object o = this; // marker statement \n" +
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" m1();\n" +
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" }\n" +
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" void test2(Object arg1) {\n" +
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" Object o = this; // marker statement \n" +
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" m2(arg1);\n" +
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" }\n" +
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"}";
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JavaSource() {
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super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
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}
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@Override
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public CharSequence getCharContent(boolean ignoreEncodingErrors) {
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return source;
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}
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}
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class Indifier extends TreeScanner<Void, Void> implements TaskListener {
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MethodSymbol bsm;
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Symtab syms;
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Names names;
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Types types;
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Indifier(Symtab syms, Names names, Types types) {
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this.syms = syms;
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this.names = names;
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this.types = types;
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}
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@Override
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public void started(TaskEvent e) {
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//do nothing
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}
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@Override
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public void finished(TaskEvent e) {
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if (e.getKind() == TaskEvent.Kind.ANALYZE) {
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scan(e.getCompilationUnit(), null);
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}
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}
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@Override
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public Void visitMethodInvocation(MethodInvocationTree node, Void p) {
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super.visitMethodInvocation(node, p);
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JCMethodInvocation apply = (JCMethodInvocation)node;
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JCIdent ident = (JCIdent)apply.meth;
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Symbol oldSym = ident.sym;
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if (!oldSym.isConstructor()) {
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ident.sym = new Symbol.DynamicMethodSymbol(oldSym.name,
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oldSym.owner, bsm.asHandle(), oldSym.type, new LoadableConstant[0]);
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}
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return null;
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}
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@Override
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public Void visitMethod(MethodTree node, Void p) {
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super.visitMethod(node, p);
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if (node.getName().toString().equals("bsm")) {
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bsm = ((JCMethodDecl)node).sym;
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}
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return null;
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}
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}
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static class DiagChecker
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implements javax.tools.DiagnosticListener<JavaFileObject> {
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boolean diagFound;
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ArrayList<String> diags = new ArrayList<>();
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public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
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diags.add(diagnostic.getMessage(Locale.getDefault()));
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diagFound = true;
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}
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String printDiags() {
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StringBuilder buf = new StringBuilder();
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for (String s : diags) {
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buf.append(s);
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buf.append("\n");
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}
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return buf.toString();
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}
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}
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}
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