1 /*

     2  * Copyright (c) 2015, Oracle and/or its affiliates. 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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

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

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

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

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

    15  * accompanied this code).

    16  *

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

    18  * 2 along with this work; if not, write to the Free Software Foundation,

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

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package jdk.jshell;

    27 

    28 /**

    29  * Common interface for all wrappings of snippet source to Java source.

    30  *

    31  * @author Robert Field

    32  */

    33 interface GeneralWrap {

    34 

    35     String wrapped();

    36 

    37     int snippetIndexToWrapIndex(int sni);

    38 

    39     int wrapIndexToSnippetIndex(int wi);

    40 

    41     default int wrapIndexToSnippetIndex(long wi) {

    42         return wrapIndexToSnippetIndex((int) wi);

    43     }

    44 

    45     int firstSnippetIndex();

    46 

    47     int lastSnippetIndex();

    48 

    49     int snippetLineToWrapLine(int snline);

    50 

    51     int wrapLineToSnippetLine(int wline);

    52 

    53     int firstSnippetLine();

    54 

    55     int lastSnippetLine();

    56 

    57     default String debugPos(long lpos) {

    58         int pos = (int) lpos;

    59         int len = wrapped().length();

    60         return wrapped().substring(Math.max(0, pos - 10), Math.max(0, Math.min(len, pos)))

    61                 + "###"

    62                 + wrapped().substring(Math.max(0, Math.min(len, pos)), Math.max(0, Math.min(len, pos + 10)));

    63     }

    64 }