| /* Token.java -- |
| Copyright (C) 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.javax.swing.text.html.parser.support.low; |
| |
| /** |
| * A token. |
| * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) |
| */ |
| public class Token |
| { |
| /** |
| * The place of this token in the document. |
| */ |
| public Location where; |
| |
| /** |
| * The additional category of token. |
| */ |
| public int category; |
| |
| /** |
| * An integer that describes the kind of this token. |
| */ |
| public int kind; |
| |
| /** |
| * The string image of the token, null if the char image must be used. |
| */ |
| private String stringImage; |
| |
| /** |
| * The char image of the token. |
| */ |
| private char charImage; |
| |
| /** |
| * Creates a new token with fields, initialized to the default values. |
| */ |
| public Token() |
| { |
| } |
| |
| /** |
| * Creates a new token of the given kind. |
| */ |
| public Token(int _kind, Location _where) |
| { |
| kind = _kind; |
| where = _where; |
| } |
| |
| /** |
| * Creates a new token of the given kind and given single char image. |
| */ |
| public Token(int _kind, char _image, Location _where) |
| { |
| kind = _kind; |
| charImage = _image; |
| where = _where; |
| } |
| |
| /** |
| * Creates a new token of the given kind and given string image. |
| */ |
| public Token(int _kind, String _image, Location _where) |
| { |
| kind = _kind; |
| stringImage = _image; |
| where = _where; |
| } |
| |
| /** |
| * Creates a new token of the given kind, category and given string image. |
| */ |
| public Token(int _kind, int _category, String _image, Location _where) |
| { |
| kind = _kind; |
| category = _category; |
| stringImage = _image; |
| where = _where; |
| } |
| |
| /** |
| * Creates a new token, where location fields are set as for token, |
| * spanning over two provided tokens and any tokens between them. |
| * The image field is initialized to null, the kind field is set to -1. |
| */ |
| public Token(Token fromInclusive, Token toInclusive) |
| { |
| where = new Location(); |
| where.beginLine = fromInclusive.where.beginLine; |
| where.startPosition = fromInclusive.where.startPosition; |
| |
| where.endLine = toInclusive.where.endLine; |
| where.endPosition = toInclusive.where.endPosition; |
| } |
| |
| public String getImage() |
| { |
| if (kind == 3) |
| return "#"; |
| if (stringImage == null) |
| { |
| if (charImage == 0) |
| return null; |
| stringImage = new String(new char[] { charImage }); |
| } |
| return stringImage; |
| } |
| |
| /** |
| * Append the token image to the given string buffer. |
| * This may be more effective that buffer.append(this.getImage()). |
| * @param buffer A buffer to append. |
| */ |
| public void appendTo(StringBuffer buffer) |
| { |
| if (charImage == 0) |
| buffer.append(getImage()); |
| else |
| buffer.append(charImage); |
| } |
| |
| /** |
| * Returns the string image or, if null, the bounding positions. |
| */ |
| public String toString() |
| { |
| return getImage() != null ? kind + "'" + getImage() |
| : "<line " + where.beginLine + ", abs pos " + where.startPosition + |
| ".." + where.endPosition + ">"; |
| } |
| } |