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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [gnu/] [javax/] [swing/] [text/] [html/] [parser/] [support/] [low/] [Token.java] - Blame information for rev 769

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1 769 jeremybenn 
/* Token.java --
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   Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING.  If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library.  Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module.  An independent module is a module which is not derived from
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or based on this library.  If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so.  If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.javax.swing.text.html.parser.support.low;
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/**
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 * A token.
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 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
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 */
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public class Token
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{
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  /**
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   * The place of this token in the document.
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   */
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  public Location where;
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  /**
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   * The additional category of token.
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   */
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  public int category;
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  /**
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   * An integer that describes the kind of this token.
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   */
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  public int kind;
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  /**
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   * The string image of the token, null if the char image must be used.
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   */
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  private String stringImage;
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  /**
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   * The char image of the token.
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   */
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  private char charImage;
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  /**
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   * Creates a new token with fields, initialized to the default values.
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   */
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  public Token()
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  {
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  }
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  /**
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   * Creates a new token of the given kind.
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   */
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  public Token(int _kind, Location _where)
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  {
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    kind = _kind;
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    where = _where;
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  }
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  /**
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   * Creates a new token of the given kind and given single char image.
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   */
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  public Token(int _kind, char _image, Location _where)
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  {
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    kind = _kind;
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    charImage = _image;
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    where = _where;
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  }
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  /**
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   * Creates a new token of the given kind and given string image.
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   */
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  public Token(int _kind, String _image, Location _where)
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  {
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    kind = _kind;
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    stringImage = _image;
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    where = _where;
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  }
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  /**
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   * Creates a new token of the given kind, category and given string image.
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   */
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  public Token(int _kind, int _category, String _image, Location _where)
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  {
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    kind = _kind;
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    category = _category;
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    stringImage = _image;
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    where = _where;
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  }
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  /**
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   * Creates a new token, where location fields are set as for token,
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   * spanning over two provided tokens and any tokens between them.
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   * The image field is initialized to null, the kind field is set to -1.
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   */
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  public Token(Token fromInclusive, Token toInclusive)
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  {
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    where = new Location();
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    where.beginLine = fromInclusive.where.beginLine;
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    where.startPosition = fromInclusive.where.startPosition;
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    where.endLine = toInclusive.where.endLine;
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    where.endPosition = toInclusive.where.endPosition;
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  }
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  public String getImage()
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  {
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    if (kind == 3)
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      return "#";
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    if (stringImage == null)
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      {
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        if (charImage == 0)
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          return null;
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        stringImage = new String(new char[] { charImage });
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      }
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    return stringImage;
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  }
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  /**
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   * Append the token image to the given string buffer.
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   * This may be more effective that buffer.append(this.getImage()).
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   * @param buffer A buffer to append.
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   */
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  public void appendTo(StringBuffer buffer)
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  {
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    if (charImage == 0)
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      buffer.append(getImage());
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    else
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      buffer.append(charImage);
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  }
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  /**
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   * Returns the string image or, if null, the bounding positions.
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   */
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  public String toString()
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  {
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    return getImage() != null ? kind + "'" + getImage()
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           : "<line " + where.beginLine + ", abs pos " + where.startPosition +
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           ".." + where.endPosition + ">";
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  }
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}

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