1 /*

     2  * Copyright 1998 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /* @test

    25    @bug 4106810 4027740 4078997 4097738

    26    @summary Make sure StreamTokenizer will correctly

    27             parse different types of comments in input.

    28    */

    29 

    30 

    31 import java.io.*;

    32 

    33 public class Comment {

    34 

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

    36 

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

    38 

    39         int slashIsCommentStart = 1;

    40         int slashSlashComment = 2;

    41         int slashStarComment = 4;

    42 

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

    44             StreamTokenizer st = new StreamTokenizer(new FileReader(f));

    45 

    46             /* decide the state of this run */

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

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

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

    50 

    51             /* set the initial state of the tokenizer */

    52             if (!slashCommentFlag) {

    53                 st.ordinaryChar('/');

    54             }

    55             st.slashSlashComments(slashSlashCommentFlag);

    56             st.slashStarComments(slashStarCommentFlag);

    57 

    58             /* now go throgh the input file */

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

    60             {

    61                 String token = st.sval;

    62                 if (token == null) {

    63                     continue;

    64                 } else {

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

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

    67                     }

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

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

    70                     }

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

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

    73                     }

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

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

    76                     }

    77                 }

    78             }

    79         }

    80     }

    81 }