| /* |
| * Copyright (c) 2010, 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 com.sun.tools.classfile.Attribute; |
| import com.sun.tools.classfile.ClassFile; |
| import com.sun.tools.classfile.Code_attribute; |
| import com.sun.tools.classfile.Code_attribute.Exception_data; |
| import com.sun.tools.classfile.Method; |
| 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; |
| ClassFile cf = ClassFile.read(f); |
| Method testMethod = null; |
| for (Method m : cf.methods) { |
| if (m.getName(cf.constant_pool).equals(TEST_METHOD_NAME)) { |
| testMethod = m; |
| break; |
| } |
| } |
| if (testMethod == null) { |
| throw new Error("Test method not found"); |
| } |
| Code_attribute ea = (Code_attribute)testMethod.attributes.get(Attribute.Code); |
| if (testMethod == null) { |
| throw new Error("Code attribute for test() method not found"); |
| } |
| Exception_data firstExceptionTable = null; |
| for (int i = 0 ; i < ea.exception_table_langth; i++) { |
| if (firstExceptionTable == null) { |
| firstExceptionTable = ea.exception_table[i]; |
| } |
| if (ea.exception_table[i].handler_pc != firstExceptionTable.handler_pc || |
| ea.exception_table[i].start_pc != firstExceptionTable.start_pc || |
| ea.exception_table[i].end_pc != firstExceptionTable.end_pc) { |
| 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); |
| } |
| } |
| } |