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/*
* Copyright (c) 2010, 2024, 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 6943289
* @summary Project Coin: Improved Exception Handling for Java (aka 'multicatch')
* @run main Pos05
*/
import java.lang.classfile.*;
import java.lang.classfile.attribute.CodeAttribute;
import java.lang.classfile.instruction.ExceptionCatch;
import java.io.*;
public class Pos05 {
static class Pos05sub {
class A extends Exception {}
class B extends Exception {}
class C extends Exception {}
void test(boolean b1, boolean b2) {
try {
if (b1) {
throw new A();
}
else if (b2) {
throw new B();
}
else {
throw new C();
}
}
catch (final A | B | C ex) {
System.out.println("Exception caught");
}
}
}
static final int TYPES_IN_MULTICATCH = 3;
static final String SUBTEST_NAME = Pos05sub.class.getName() + ".class";
static final String TEST_METHOD_NAME = "test";
public static void main(String... args) throws Exception {
new Pos05().run();
}
public void run() throws Exception {
String workDir = System.getProperty("test.classes");
File compiledTest = new File(workDir, SUBTEST_NAME);
verifyMulticatchExceptionRanges(compiledTest);
}
void verifyMulticatchExceptionRanges(File f) {
System.err.println("verify: " + f);
try {
int count = 0;
ClassModel cf = ClassFile.of().parse(f.toPath());
MethodModel testMethod = null;
for (MethodModel m : cf.methods()) {
if (m.methodName().equalsString(TEST_METHOD_NAME)) {
testMethod = m;
break;
}
}
if (testMethod == null) {
throw new Error("Test method not found");
}
CodeAttribute ea = testMethod.findAttribute(Attributes.code()).orElse(null);
if (ea == null) {
throw new Error("Code attribute for test() method not found");
}
ExceptionCatch firstExceptionTable = null;
for (int i = 0 ; i < ea.exceptionHandlers().size(); i++) {
if (firstExceptionTable == null) {
firstExceptionTable = ea.exceptionHandlers().get(i);
}
if (ea.exceptionHandlers().get(i).handler() != firstExceptionTable.handler() ||
ea.exceptionHandlers().get(i).tryStart() != firstExceptionTable.tryStart() ||
ea.exceptionHandlers().get(i).tryEnd() != firstExceptionTable.tryEnd()) {
throw new Error("Multiple overlapping catch clause found in generated code");
}
count++;
}
if (count != TYPES_IN_MULTICATCH) {
throw new Error("Wrong number of exception data found: " + count);
}
} catch (Exception e) {
e.printStackTrace();
throw new Error("error reading " + f +": " + e);
}
}
}
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