/*
 * Copyright 2002-2006 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/* Generated By:JavaCC: Do not edit this line. Token.java Version 2.1 */
package org.apache.commons.jexl.parser;

/**
 * Describes the input token stream.
 */

public class Token {

    /**
     * An integer that describes the kind of this token. This numbering system
     * is determined by JavaCCParser, and a table of these numbers is stored in
     * the file ...Constants.java.
     */
    public int kind;

    /**
     * beginLine and beginColumn describe the position of the first character of
     * this token; endLine and endColumn describe the position of the last
     * character of this token.
     */
    public int beginLine, beginColumn, endLine, endColumn;

    /**
     * The string image of the token.
     */
    public String image;

    /**
     * A reference to the next regular (non-special) token from the input
     * stream. If this is the last token from the input stream, or if the token
     * manager has not read tokens beyond this one, this field is set to null.
     * This is true only if this token is also a regular token. Otherwise, see
     * below for a description of the contents of this field.
     */
    public Token next;

    /**
     * This field is used to access special tokens that occur prior to this
     * token, but after the immediately preceding regular (non-special) token.
     * If there are no such special tokens, this field is set to null. When
     * there are more than one such special token, this field refers to the last
     * of these special tokens, which in turn refers to the next previous
     * special token through its specialToken field, and so on until the first
     * special token (whose specialToken field is null). The next fields of
     * special tokens refer to other special tokens that immediately follow it
     * (without an intervening regular token). If there is no such token, this
     * field is null.
     */
    public Token specialToken;

    /**
     * Returns the image.
     */
    public final String toString() {
        return image;
    }

    /**
     * Returns a new Token object, by default. However, if you want, you can
     * create and return subclass objects based on the value of ofKind. Simply
     * add the cases to the switch for all those special cases. For example, if
     * you have a subclass of Token called IDToken that you want to create if
     * ofKind is ID, simlpy add something like :
     * 
     * case MyParserConstants.ID : return new IDToken();
     * 
     * to the following switch statement. Then you can cast matchedToken
     * variable to the appropriate type and use it in your lexical actions.
     */
    public static final Token newToken(int ofKind) {
        switch (ofKind) {
            default:
                return new Token();
        }
    }

}
