/*

 * Copyright (c) 2012, 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 7199823

 * @summary javac generates inner class that can't be verified

 * @run main InnerClassCannotBeVerified

 */

import java.util.Arrays;

import javax.tools.JavaFileObject;

import java.net.URI;

import javax.tools.SimpleJavaFileObject;

import javax.tools.ToolProvider;

import javax.tools.JavaCompiler;

import com.sun.source.util.JavacTask;

import com.sun.tools.classfile.ClassFile;

import com.sun.tools.classfile.ConstantPoolException;

import java.io.File;

import java.io.IOException;

public class InnerClassCannotBeVerified {

    private static final String errorMessage =

            "Compile error while compiling the following source:\n";

    public static void main(String... args) throws Exception {

        new InnerClassCannotBeVerified().run();

    }

    void run() throws Exception {

        JavaCompiler comp = ToolProvider.getSystemJavaCompiler();

        JavaSource source = new JavaSource();

        JavacTask ct = (JavacTask)comp.getTask(null, null, null,

                null, null, Arrays.asList(source));

        try {

            if (!ct.call()) {

                throw new AssertionError(errorMessage +

                        source.getCharContent(true));

            }

        } catch (Throwable ex) {

            throw new AssertionError(errorMessage +

                    source.getCharContent(true));

        }

        check();

    }

    private void check() throws IOException, ConstantPoolException {

        File file = new File("Test$1.class");

        ClassFile classFile = ClassFile.read(file);

        boolean inheritsFromObject =

                classFile.getSuperclassName().equals("java/lang/Object");

        boolean implementsNoInterface = classFile.interfaces.length == 0;

        boolean noMethods = classFile.methods.length == 0;

        if (!(inheritsFromObject &&

              implementsNoInterface &&

              noMethods)) {

            throw new AssertionError("The inner classes reused as " +

                    "access constructor tag for this code must be empty");

        }

    }

    class JavaSource extends SimpleJavaFileObject {

        String internalSource =

                              "public class Test {\n" +

                              "    private static class Foo {}\n" +

                              "    public static void main(String[] args){ \n" +

                              "        new Foo();\n" +

                              "        if(false) {\n" +

                              "            new Runnable() {\n" +

                              "                @Override\n" +

                              "                public void run() {\n" +

                              "                    System.out.println();\n" +

                              "                }\n" +

                              "            }.run();\n" +

                              "        }\n" +

                              "   }\n" +

                              "}";

        public JavaSource() {

            super(URI.create("Test.java"), JavaFileObject.Kind.SOURCE);

        }

        @Override

        public CharSequence getCharContent(boolean ignoreEncodingErrors) {

            return internalSource;

        }

    }

}