org.eclipse.xtext.nodemodel.util

Class EmptyBidiIterator<T>

java.lang.Object

com.google.common.collect.UnmodifiableIterator<T>

org.eclipse.xtext.nodemodel.util.EmptyBidiIterator<T>

All Implemented Interfaces:

Iterator<T>, BidiIterator<T>

public class EmptyBidiIterator<T>
extends com.google.common.collect.UnmodifiableIterator<T>
implements BidiIterator<T>

Author:

Sebastian Zarnekow - Initial contribution and API

Constructor Summary

Constructors

Constructor and Description
EmptyBidiIterator()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasNext()
boolean	hasPrevious() Returns true if this bidi iterator has more elements when traversing in the reverse direction.
static <T> BidiIterator<T>	instance()
T	next()
T	previous() Returns the previous element.

Methods inherited from class com.google.common.collect.UnmodifiableIterator

remove

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

remove

Constructor Detail

EmptyBidiIterator

public EmptyBidiIterator()

Method Detail

instance

public static <T> BidiIterator<T> instance()

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T>

next

public T next()

Specified by:

next in interface Iterator<T>

hasPrevious

public boolean hasPrevious()

Description copied from interface: BidiIterator

Returns true if this bidi iterator has more elements when traversing in the reverse direction. (In other words, returns true if previous would return an element rather than throwing an exception.)

Specified by:

hasPrevious in interface BidiIterator<T>

Returns:

true if the bidi iterator has more elements when traversing in the reverse direction.

previous

public T previous()

Description copied from interface: BidiIterator

Returns the previous element. This method may be called repeatedly to iterate backwards, or intermixed with calls to next to go back and forth. (Note that alternating calls to next and previous will return the same element repeatedly.)

Specified by:

previous in interface BidiIterator<T>

Returns:

the previous element.