org.anarres.graphviz.parser.lexer

Class Lexer

java.lang.Object

org.anarres.graphviz.parser.lexer.Lexer

All Implemented Interfaces:

LexerInterface

public class Lexer
extends java.lang.Object
implements LexerInterface

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Lexer.State

Field Summary

Fields

Modifier and Type	Field and Description
protected Lexer.State	state
protected Token	token

Constructor Summary

Constructors

Constructor and Description
Lexer(java.io.PushbackReader in)

Method Summary

Modifier and Type	Method and Description
protected void	filter()
protected java.lang.String	getText(int acceptLength)
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

Specified by:

peek in interface LexerInterface

Throws:

LexerException

java.io.IOException

next

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

Specified by:

next in interface LexerInterface

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

getText

protected java.lang.String getText(int acceptLength)