aima.logic.common
Class Lexer

java.lang.Object
  aima.logic.common.Lexer

Direct Known Subclasses:

FOLLexer, PELexer

public abstract class Lexer
extends java.lang.Object

Field Summary

protected java.io.Reader	input
protected int	lookAhead
protected int[]	lookAheadBuffer

Constructor Summary

Lexer()

Method Summary

void	clear()
protected void	consume()
protected void	fillLookAheadBuffer()
protected boolean	isEndOfFile(int i)
protected void	loadNextCharacterFromInput()
protected char	lookAhead(int position)
protected abstract Token	nextToken()
void	setInput(java.lang.String inputString)

Methods inherited from class java.lang.Object

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

Field Detail

input

protected java.io.Reader input

lookAhead

protected int lookAhead

lookAheadBuffer

protected int[] lookAheadBuffer

Constructor Detail

Lexer

public Lexer()

Method Detail

nextToken

protected abstract Token nextToken()

setInput

public void setInput(java.lang.String inputString)

fillLookAheadBuffer

protected void fillLookAheadBuffer()

lookAhead

protected char lookAhead(int position)

isEndOfFile

protected boolean isEndOfFile(int i)

loadNextCharacterFromInput

protected void loadNextCharacterFromInput()

consume

protected void consume()

clear

public void clear()