com.googlecode.javaewah

Class ReverseEWAHIterator

java.lang.Object

com.googlecode.javaewah.ReverseEWAHIterator

final class ReverseEWAHIterator
extends java.lang.Object

The class ReverseEWAHIterator represents a special type of efficient iterator iterating over (uncompressed) words of bits in reverse order.

Field Summary

Fields

Modifier and Type	Field and Description
private int	pointer The pointer representing the location of the current running length word in the array of words (embedded in the rlw attribute).
private java.util.Stack<java.lang.Integer>	positions The positions of running length words (embedded in the rlw attribute).
protected RunningLengthWord	rlw The current running length word.

Constructor Summary

Constructors

Constructor and Description
ReverseEWAHIterator(Buffer buffer) Instantiates a new reverse EWAH iterator.

Method Summary

Modifier and Type	Method and Description
Buffer	buffer() Access to the buffer
boolean	hasPrevious() Checks for previous.
int	position() Position of the current running length word.
RunningLengthWord	previous() Previous running length word.

Methods inherited from class java.lang.Object

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

Field Detail

positions

private java.util.Stack<java.lang.Integer> positions

The positions of running length words (embedded in the rlw attribute).

pointer

private int pointer

The pointer representing the location of the current running length word in the array of words (embedded in the rlw attribute).

rlw

protected RunningLengthWord rlw

The current running length word.

Constructor Detail

ReverseEWAHIterator

public ReverseEWAHIterator(Buffer buffer)

Instantiates a new reverse EWAH iterator.

Parameters:

buffer - the buffer

Method Detail

buffer

public Buffer buffer()

Access to the buffer

Returns:

the buffer

position

public int position()

Position of the current running length word.

Returns:

the int

hasPrevious

public boolean hasPrevious()

Checks for previous.

Returns:

true, if successful

previous

public RunningLengthWord previous()

Previous running length word.

Returns:

the running length word