/*

 * Copyright (c) 2013, 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 5053846 8011432

 * @summary javac: MethodRef entries are duplicated in the constant pool

 * @summary javac, compiler regression iterable + captured type

 */

import java.io.PrintWriter;

import java.io.StringWriter;

import java.nio.file.Paths;

import java.util.*;

public class MethodRefDupInConstantPoolTest {

    private static final String methodToLookFor =

            "java/util/Vector.iterator:()Ljava/util/Iterator;";

    public static void main(String[] args) {

        new MethodRefDupInConstantPoolTest().run();

    }

    void run() {

        check("-v", Paths.get(System.getProperty("test.classes"),

                this.getClass().getSimpleName() + "$TestHelper1.class").toString());

        check("-v", Paths.get(System.getProperty("test.classes"),

                this.getClass().getSimpleName() + "$TestHelper2.class").toString());

        check("-v", Paths.get(System.getProperty("test.classes"),

                this.getClass().getSimpleName() + "$TestHelper3.class").toString());

        check("-v", Paths.get(System.getProperty("test.classes"),

                this.getClass().getSimpleName() + "$TestHelper4.class").toString());

    }

    void check(String... params) {

        StringWriter s;

        String out;

        try (PrintWriter pw = new PrintWriter(s = new StringWriter())) {

            com.sun.tools.javap.Main.run(params, pw);

            out = s.toString();

        }

        String constantPool = getConstantPool(out);

        if (constantPool.indexOf(methodToLookFor) !=

                constantPool.lastIndexOf(methodToLookFor)) {

            throw new AssertionError("There is more than one entry for the method seek "  +

                    methodToLookFor);

        }

    }

    String getConstantPool(String out) {

        int start = out.indexOf("Constant pool:");

        int end = out.indexOf("{");

        return out.substring(start, end);

    }

    class TestHelper1 {

        void m() {

            Vector v = new Vector();

            Iterator iter = v.iterator();

            while (iter.hasNext()) {

                Object o = iter.next();

                Object o2 = o;

            }

            for (Object o: v) {

                Object o2 = o;

            }

        }

    }

    class TestHelper2<X extends Number & Iterable<String>> {

        void test(X x) {

            for (String s : x) { }

        }

    }

    interface Data extends Iterable<String> {}

    class TestHelper3<X extends Number & Iterable<? extends Data>> {

        void test(X x) {

            for (Data s : x) { }

        }

    }

    class TestHelper4 {

         void test(Iterable<? extends Data> t) {

             for(Object a: t.iterator().next());

         }

    }

}