GeneralWrap.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package jdk.jshell;

/**
 * Common interface for all wrappings of snippet source to Java source.
 *
 * @author Robert Field
 */
interface GeneralWrap {

    String wrapped();

    int snippetIndexToWrapIndex(int sni);

    int wrapIndexToSnippetIndex(int wi);

    default int wrapIndexToSnippetIndex(long wi) {
        return wrapIndexToSnippetIndex((int) wi);
    }

    int firstSnippetIndex();

    int lastSnippetIndex();

    int snippetLineToWrapLine(int snline);

    int wrapLineToSnippetLine(int wline);

    int firstSnippetLine();

    int lastSnippetLine();

    default String debugPos(long lpos) {
        int pos = (int) lpos;
        int len = wrapped().length();
        return wrapped().substring(Math.max(0, pos - 10), Math.max(0, Math.min(len, pos)))
                + "###"
                + wrapped().substring(Math.max(0, Math.min(len, pos)), Math.max(0, Math.min(len, pos + 10)));
    }
}