001/* Generated By:JavaCC: Do not edit this line. Token.java Version 5.0 */ 002/* JavaCCOptions:TOKEN_EXTENDS=,KEEP_LINE_COL=null,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */ 003/* 004 * jDTAUS Core RI Client Container 005 * Copyright (C) 2005 Christian Schulte 006 * <cs@schulte.it> 007 * 008 * This library is free software; you can redistribute it and/or 009 * modify it under the terms of the GNU Lesser General Public 010 * License as published by the Free Software Foundation; either 011 * version 2.1 of the License, or any later version. 012 * 013 * This library is distributed in the hope that it will be useful, 014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 016 * Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public 019 * License along with this library; if not, write to the Free Software 020 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 021 * 022 * $JDTAUS: VersionParser.jj 8641 2012-09-27 06:45:17Z schulte $ 023 * 024 */ 025package org.jdtaus.core.container.ri.client.versioning; 026 027/** 028 * Describes the input token stream. 029 */ 030 031public class Token implements java.io.Serializable { 032 033 /** 034 * The version identifier for this Serializable class. 035 * Increment only if the <i>serialized</i> form of the 036 * class changes. 037 */ 038 private static final long serialVersionUID = 1L; 039 040 /** 041 * An integer that describes the kind of this token. This numbering 042 * system is determined by JavaCCParser, and a table of these numbers is 043 * stored in the file ...Constants.java. 044 */ 045 public int kind; 046 047 /** The line number of the first character of this Token. */ 048 public int beginLine; 049 /** The column number of the first character of this Token. */ 050 public int beginColumn; 051 /** The line number of the last character of this Token. */ 052 public int endLine; 053 /** The column number of the last character of this Token. */ 054 public int endColumn; 055 056 /** 057 * The string image of the token. 058 */ 059 public String image; 060 061 /** 062 * A reference to the next regular (non-special) token from the input 063 * stream. If this is the last token from the input stream, or if the 064 * token manager has not read tokens beyond this one, this field is 065 * set to null. This is true only if this token is also a regular 066 * token. Otherwise, see below for a description of the contents of 067 * this field. 068 */ 069 public Token next; 070 071 /** 072 * This field is used to access special tokens that occur prior to this 073 * token, but after the immediately preceding regular (non-special) token. 074 * If there are no such special tokens, this field is set to null. 075 * When there are more than one such special token, this field refers 076 * to the last of these special tokens, which in turn refers to the next 077 * previous special token through its specialToken field, and so on 078 * until the first special token (whose specialToken field is null). 079 * The next fields of special tokens refer to other special tokens that 080 * immediately follow it (without an intervening regular token). If there 081 * is no such token, this field is null. 082 */ 083 public Token specialToken; 084 085 /** 086 * An optional attribute value of the Token. 087 * Tokens which are not used as syntactic sugar will often contain 088 * meaningful values that will be used later on by the compiler or 089 * interpreter. This attribute value is often different from the image. 090 * Any subclass of Token that actually wants to return a non-null value can 091 * override this method as appropriate. 092 */ 093 public Object getValue() { 094 return null; 095 } 096 097 /** 098 * No-argument constructor 099 */ 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) */