Package com.singularsys.jep.configurableparser

Class LookaheadNIterator<E>

java.lang.Object

com.singularsys.jep.configurableparser.Lookahead2Iterator<E>

com.singularsys.jep.configurableparser.LookaheadNIterator<E>

public class LookaheadNIterator<E>
extends Lookahead2Iterator<E>

A subclass of a Lookahead2Iterator which allows any number of character of lookahead.

Constructor Summary

Constructors

Constructor	Description
LookaheadNIterator(Iterator<E> input)

Method Summary

Modifier and Type	Method	Description
void	consume()	Eat one token.
E	lookahead(int n)	Look at character n places up the stream
E	nextnext()
E	peekNext()
E	prev()	Return the token just consumed.
void	setInputIterator(Iterator<E> input)	Should be called if the default constructor is used.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

LookaheadNIterator

public LookaheadNIterator(Iterator<E> input)

Method Details

setInputIterator

public void setInputIterator(Iterator<E> input)

Description copied from class: Lookahead2Iterator

Should be called if the default constructor is used.

Overrides:

setInputIterator in class Lookahead2Iterator<E>

Parameters:

input - the new input iterator

peekNext

public E peekNext()

Overrides:

peekNext in class Lookahead2Iterator<E>

nextnext

public E nextnext()

Overrides:

nextnext in class Lookahead2Iterator<E>

lookahead

public E lookahead(int n)

Look at character n places up the stream

Parameters:

n - number of characters to lookahead

Returns:

the token n places ahead

prev

public E prev()

Description copied from class: Lookahead2Iterator

Return the token just consumed.

Overrides:

prev in class Lookahead2Iterator<E>

Returns:

the token, or null if no token consumed.

consume

public void consume()

Eat one token.

Overrides:

consume in class Lookahead2Iterator<E>

toString

public String toString()

Overrides:

toString in class Lookahead2Iterator<E>