Frames | No Frames |
1: /* Generated By:JavaCC: Do not edit this line. Token.java Version 4.1 */ 2: /* JavaCCOptions:TOKEN_EXTENDS=,KEEP_LINE_COL=null */ 3: package org.jfree.formula.parser; 4: 5: /** 6: * Describes the input token stream. 7: */ 8: 9: public class Token { 10: 11: /** 12: * An integer that describes the kind of this token. This numbering 13: * system is determined by JavaCCParser, and a table of these numbers is 14: * stored in the file ...Constants.java. 15: */ 16: public int kind; 17: 18: /** The line number of the first character of this Token. */ 19: public int beginLine; 20: /** The column number of the first character of this Token. */ 21: public int beginColumn; 22: /** The line number of the last character of this Token. */ 23: public int endLine; 24: /** The column number of the last character of this Token. */ 25: public int endColumn; 26: 27: /** 28: * The string image of the token. 29: */ 30: public String image; 31: 32: /** 33: * A reference to the next regular (non-special) token from the input 34: * stream. If this is the last token from the input stream, or if the 35: * token manager has not read tokens beyond this one, this field is 36: * set to null. This is true only if this token is also a regular 37: * token. Otherwise, see below for a description of the contents of 38: * this field. 39: */ 40: public Token next; 41: 42: /** 43: * This field is used to access special tokens that occur prior to this 44: * token, but after the immediately preceding regular (non-special) token. 45: * If there are no such special tokens, this field is set to null. 46: * When there are more than one such special token, this field refers 47: * to the last of these special tokens, which in turn refers to the next 48: * previous special token through its specialToken field, and so on 49: * until the first special token (whose specialToken field is null). 50: * The next fields of special tokens refer to other special tokens that 51: * immediately follow it (without an intervening regular token). If there 52: * is no such token, this field is null. 53: */ 54: public Token specialToken; 55: 56: /** 57: * An optional attribute value of the Token. 58: * Tokens which are not used as syntactic sugar will often contain 59: * meaningful values that will be used later on by the compiler or 60: * interpreter. This attribute value is often different from the image. 61: * Any subclass of Token that actually wants to return a non-null value can 62: * override this method as appropriate. 63: */ 64: public Object getValue() { 65: return null; 66: } 67: 68: /** 69: * No-argument constructor 70: */ 71: public Token() {} 72: 73: /** 74: * Constructs a new token for the specified Image. 75: */ 76: public Token(int kind) 77: { 78: this(kind, null); 79: } 80: 81: /** 82: * Constructs a new token for the specified Image and Kind. 83: */ 84: public Token(int kind, String image) 85: { 86: this.kind = kind; 87: this.image = image; 88: } 89: 90: /** 91: * Returns the image. 92: */ 93: public String toString() 94: { 95: return image; 96: } 97: 98: /** 99: * Returns a new Token object, by default. However, if you want, you 100: * can create and return subclass objects based on the value of ofKind. 101: * Simply add the cases to the switch for all those special cases. 102: * For example, if you have a subclass of Token called IDToken that 103: * you want to create if ofKind is ID, simply add something like : 104: * 105: * case MyParserConstants.ID : return new IDToken(ofKind, image); 106: * 107: * to the following switch statement. Then you can cast matchedToken 108: * variable to the appropriate type and use sit in your lexical actions. 109: */ 110: public static Token newToken(int ofKind, String image) 111: { 112: switch(ofKind) 113: { 114: default : return new Token(ofKind, image); 115: } 116: } 117: 118: public static Token newToken(int ofKind) 119: { 120: return newToken(ofKind, null); 121: } 122: 123: } 124: /* JavaCC - OriginalChecksum=fad79c62e640d221ba36a5eaf0835bf0 (do not edit this line) */