1 /* Generated By:JavaCC: Do not edit this line. Token.java Version 5.0 */ 2 /* JavaCCOptions:TOKEN_EXTENDS=,KEEP_LINE_COL=null,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */ 3 /* 4 * jDTAUS Core RI Client Container 5 * Copyright (C) 2005 Christian Schulte 6 * <cs@schulte.it> 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with this library; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 21 * 22 * $JDTAUS: VersionParser.jj 8641 2012-09-27 06:45:17Z schulte $ 23 * 24 */ 25 package org.jdtaus.core.container.ri.client.versioning; 26 27 /** 28 * Describes the input token stream. 29 */ 30 31 public class Token implements java.io.Serializable { 32 33 /** 34 * The version identifier for this Serializable class. 35 * Increment only if the <i>serialized</i> form of the 36 * class changes. 37 */ 38 private static final long serialVersionUID = 1L; 39 40 /** 41 * An integer that describes the kind of this token. This numbering 42 * system is determined by JavaCCParser, and a table of these numbers is 43 * stored in the file ...Constants.java. 44 */ 45 public int kind; 46 47 /** The line number of the first character of this Token. */ 48 public int beginLine; 49 /** The column number of the first character of this Token. */ 50 public int beginColumn; 51 /** The line number of the last character of this Token. */ 52 public int endLine; 53 /** The column number of the last character of this Token. */ 54 public int endColumn; 55 56 /** 57 * The string image of the token. 58 */ 59 public String image; 60 61 /** 62 * A reference to the next regular (non-special) token from the input 63 * stream. If this is the last token from the input stream, or if the 64 * token manager has not read tokens beyond this one, this field is 65 * set to null. This is true only if this token is also a regular 66 * token. Otherwise, see below for a description of the contents of 67 * this field. 68 */ 69 public Token next; 70 71 /** 72 * This field is used to access special tokens that occur prior to this 73 * token, but after the immediately preceding regular (non-special) token. 74 * If there are no such special tokens, this field is set to null. 75 * When there are more than one such special token, this field refers 76 * to the last of these special tokens, which in turn refers to the next 77 * previous special token through its specialToken field, and so on 78 * until the first special token (whose specialToken field is null). 79 * The next fields of special tokens refer to other special tokens that 80 * immediately follow it (without an intervening regular token). If there 81 * is no such token, this field is null. 82 */ 83 public Token specialToken; 84 85 /** 86 * An optional attribute value of the Token. 87 * Tokens which are not used as syntactic sugar will often contain 88 * meaningful values that will be used later on by the compiler or 89 * interpreter. This attribute value is often different from the image. 90 * Any subclass of Token that actually wants to return a non-null value can 91 * override this method as appropriate. 92 */ 93 public Object getValue() { 94 return null; 95 } 96 97 /** 98 * No-argument constructor 99 */ 100 public Token() {} 101 102 /** 103 * Constructs a new token for the specified Image. 104 */ 105 public Token(int kind) 106 { 107 this(kind, null); 108 } 109 110 /** 111 * Constructs a new token for the specified Image and Kind. 112 */ 113 public Token(int kind, String image) 114 { 115 this.kind = kind; 116 this.image = image; 117 } 118 119 /** 120 * Returns the image. 121 */ 122 public String toString() 123 { 124 return image; 125 } 126 127 /** 128 * Returns a new Token object, by default. However, if you want, you 129 * can create and return subclass objects based on the value of ofKind. 130 * Simply add the cases to the switch for all those special cases. 131 * For example, if you have a subclass of Token called IDToken that 132 * you want to create if ofKind is ID, simply add something like : 133 * 134 * case MyParserConstants.ID : return new IDToken(ofKind, image); 135 * 136 * to the following switch statement. Then you can cast matchedToken 137 * variable to the appropriate type and use sit in your lexical actions. 138 */ 139 public static Token newToken(int ofKind, String image) 140 { 141 switch(ofKind) 142 { 143 default : return new Token(ofKind, image); 144 } 145 } 146 147 public static Token newToken(int ofKind) 148 { 149 return newToken(ofKind, null); 150 } 151 152 } 153 /* JavaCC - OriginalChecksum=cd65f0cb804df8f7ace1ac371dcf906a (do not edit this line) */