/*

 * Copyright (c) 1998, 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

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 * questions.

 */

/* @test

   @bug 4106810 4027740 4078997 4097738

   @summary Make sure StreamTokenizer will correctly

            parse different types of comments in input.

   */

import java.io.*;

public class Comment {

    public static void main(String[] args) throws Exception {

        File f = new File(System.getProperty("test.src", "."), "input.txt");

        int slashIsCommentStart = 1;

        int slashSlashComment = 2;

        int slashStarComment = 4;

        for (int i = 0; i < 8 ; i++) {

            FileReader reader = new FileReader(f);

            try {

                StreamTokenizer st = new StreamTokenizer(reader);

                /* decide the state of this run */

                boolean slashCommentFlag = ((i & slashIsCommentStart) != 0);

                boolean slashSlashCommentFlag = ((i & slashSlashComment) != 0);

                boolean slashStarCommentFlag = ((i & slashStarComment) != 0);

                /* set the initial state of the tokenizer */

                if (!slashCommentFlag) {

                    st.ordinaryChar('/');

                }

                st.slashSlashComments(slashSlashCommentFlag);

                st.slashStarComments(slashStarCommentFlag);

                /* now go throgh the input file */

                while(st.nextToken() != StreamTokenizer.TT_EOF)

                {

                    String token = st.sval;

                    if (token == null) {

                        continue;

                    } else {

                        if ((token.compareTo("Error1") == 0) && slashStarCommentFlag) {

                            throw new Exception("Failed to pass one line C comments!");

                        }

                        if ((token.compareTo("Error2") == 0) && slashStarCommentFlag) {

                            throw new Exception("Failed to pass multi line C comments!");

                        }

                        if ((token.compareTo("Error3") == 0) && slashSlashCommentFlag) {

                            throw new Exception("Failed to pass C++ comments!");

                        }

                        if ((token.compareTo("Error4") == 0) && slashCommentFlag) {

                            throw new Exception("Failed to pass / comments!");

                        }

                    }

                }

            } finally {

                reader.close();

            }

        }

    }

}