byucc.jhdl.parsers.xnf.lexer
Class Lexer

java.lang.Object
  byucc.jhdl.parsers.xnf.lexer.Lexer

public class Lexer

extends java.lang.Object

Nested Class Summary

static class

Lexer.State

Field Summary

protected Lexer.State	state
protected Token	token

Constructor Summary

Lexer(java.io.PushbackReader in)

Method Summary

protected void	filter()
protected Token	getToken()
Token	next()
Token	peek()
protected void	unread(Token token)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

token

protected Token token

state

protected Lexer.State state

Constructor Detail

Lexer

public Lexer(java.io.PushbackReader in)

Method Detail

filter

protected void filter()
               throws LexerException,
                      java.io.IOException

Throws:

LexerException

java.io.IOException

peek

public Token peek()
           throws LexerException,
                  java.io.IOException

Throws:

LexerException

java.io.IOException

next

public Token next()
           throws LexerException,
                  java.io.IOException

Throws:

LexerException

java.io.IOException

getToken

protected Token getToken()
                  throws java.io.IOException,
                         LexerException

Throws:

java.io.IOException

LexerException

unread

protected void unread(Token token)
               throws java.io.IOException

Throws:

java.io.IOException