118 lines
4.2 KiB
Java
118 lines
4.2 KiB
Java
/*
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* Copyright (c) 2010, 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 6943289
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* @summary Project Coin: Improved Exception Handling for Java (aka 'multicatch')
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* @enablePreview
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* @modules java.base/jdk.internal.classfile.impl
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* @run main Pos05
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*/
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import java.lang.classfile.*;
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import java.lang.classfile.attribute.CodeAttribute;
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import java.lang.classfile.instruction.ExceptionCatch;
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import java.io.*;
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public class Pos05 {
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static class Pos05sub {
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class A extends Exception {}
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class B extends Exception {}
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class C extends Exception {}
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void test(boolean b1, boolean b2) {
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try {
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if (b1) {
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throw new A();
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}
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else if (b2) {
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throw new B();
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}
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else {
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throw new C();
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}
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}
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catch (final A | B | C ex) {
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System.out.println("Exception caught");
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}
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}
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}
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static final int TYPES_IN_MULTICATCH = 3;
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static final String SUBTEST_NAME = Pos05sub.class.getName() + ".class";
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static final String TEST_METHOD_NAME = "test";
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public static void main(String... args) throws Exception {
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new Pos05().run();
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}
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public void run() throws Exception {
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String workDir = System.getProperty("test.classes");
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File compiledTest = new File(workDir, SUBTEST_NAME);
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verifyMulticatchExceptionRanges(compiledTest);
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}
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void verifyMulticatchExceptionRanges(File f) {
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System.err.println("verify: " + f);
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try {
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int count = 0;
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ClassModel cf = ClassFile.of().parse(f.toPath());
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MethodModel testMethod = null;
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for (MethodModel m : cf.methods()) {
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if (m.methodName().equalsString(TEST_METHOD_NAME)) {
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testMethod = m;
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break;
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}
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}
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if (testMethod == null) {
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throw new Error("Test method not found");
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}
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CodeAttribute ea = testMethod.findAttribute(Attributes.code()).orElse(null);
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if (ea == null) {
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throw new Error("Code attribute for test() method not found");
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}
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ExceptionCatch firstExceptionTable = null;
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for (int i = 0 ; i < ea.exceptionHandlers().size(); i++) {
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if (firstExceptionTable == null) {
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firstExceptionTable = ea.exceptionHandlers().get(i);
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}
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if (ea.exceptionHandlers().get(i).handler() != firstExceptionTable.handler() ||
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ea.exceptionHandlers().get(i).tryStart() != firstExceptionTable.tryStart() ||
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ea.exceptionHandlers().get(i).tryEnd() != firstExceptionTable.tryEnd()) {
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throw new Error("Multiple overlapping catch clause found in generated code");
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}
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count++;
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}
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if (count != TYPES_IN_MULTICATCH) {
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throw new Error("Wrong number of exception data found: " + count);
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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 " + f +": " + e);
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}
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}
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}
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