text: avaCC: Do not edit this line. Token.java Version 2.1 */17 package org.apache.commons.jexl.parser;18 19 /**20 * Describes the input token stream.21 */22 23 public class Token {24 25 /**26 * An integer that describes the kind of this token. This numbering system27 * is determined by JavaCCParser, and a table of these numbers is stored in28 * the file ...Constants.java.29 */30 public int kind;31 32 /**33 * beginLine and beginColumn describe the position of the first character of34 * this token; endLine and endColumn describe the position of the last35 * character of this token.36 */37 public int beginLine, beginColumn, endLine, endColumn;38 39 /**40 * The string image of the token.41 */42 public String image;43 44 /**45 * A reference to the next regular (non-special) token from the input46 * stream. If this is the last token from the input stream, or if the token47 * manager has not read tokens beyond this one, this field is set to null.48 * This is true only if this token is also a regular token. Otherwise, see49 * below for a description of the contents of this field.50 */51 public Token next;52 53 /**54 * This field is used to access special tokens that occur prior to this55 * token, but after the immediately preceding regular (non-special) token.56 * If there are no such special tokens, this field is set to null. When57 * there are more than one such special token, this field refers to the last58 * of these special tokens, which in turn refers to the next previous59 * special token through its specialToken field, and so on until the first60 * special token (whose specialToken field is null). The next fields of61 * special tokens refer to other special tokens that immediately follow it62 * (without an intervening regular token). If there is no such token, this63 * field is null.64 */65 public Token specialToken;66 67 /**68 * Returns the image.69 */70 public final String toString() {71 return image;72 }73 74 /**75 * Returns a new Token object, by default. However, if you want, you can76 * create and return subclass objects based on the value of ofKind. Simply77 * add the cases to the switch for all those special cases. For example, if78 * you have a subclass of Token called IDToken that you want to create if79 * ofKind is ID, simlpy add something like :80 * 81 * case MyParserConstants.ID : return new IDToken();82 * 83 * to the following switch statement. Then you can cast matchedToken84 * variable to the appropriate type and use it in your lexical actions.85 */86 public static final Token newToken(int ofKind) {87 switch (ofKind) {88 default:89 return new Token();90 }91 }92 93 }94
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