net.sourceforge.czt.parser.util
Interface Token

All Known Subinterfaces:

LocToken

All Known Implementing Classes:

Keyword, LatexSym, LocTokenImpl, TokenImpl, TokenName

public interface Token

A token is an object with a name and an optional spelling, which is usually created by a lexer (or scanner) and subsequently used in a parser. A typical Z token is LPAREN, which is created when the lexer finds a '('-character. Another typical Z Token is DECORWORD, which is created when the lexer finds a decorated word like "x?". The DECORWORD token has usually a spelling associated, "x?" in the example above.

It is convenient to allow any Object to be used as a spelling for a token. For example, a NUMERAL token could have an Integer as spelling. The toString() method of the spelling object should return the string from which the lexer created this token.

Author:

Petra Malik

Method Summary

java.lang.String	getName()
java.lang.Object	getSpelling()
java.lang.String	spelling()

Method Detail

getName

java.lang.String getName()

getSpelling

java.lang.Object getSpelling()

spelling

java.lang.String spelling()