/*

 * Copyright (c) 2010, 2015, 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')

 * @modules jdk.jdeps/com.sun.tools.classfile

 * @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_length; 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);

        }

    }

}