com.googlecode.javaewah32

Class NonEmptyVirtualStorage32

java.lang.Object

com.googlecode.javaewah32.NonEmptyVirtualStorage32

All Implemented Interfaces:

BitmapStorage32

public class NonEmptyVirtualStorage32
extends Object
implements BitmapStorage32

This is a BitmapStorage that can be used to determine quickly if the result of an operation is non-trivial... that is, whether there will be at least on set bit.

Since:

0.5.0

Author:

Daniel Lemire and Veronika Zenz

Constructor Summary

Constructors

Constructor and Description
NonEmptyVirtualStorage32()

Method Summary

Modifier and Type	Method and Description
void	addLiteralWord(int newData) If the word to be added is non-zero, a NonEmptyException exception is thrown.
void	addStreamOfEmptyWords(boolean v, int number) If the boolean value is true and number is greater than 0, then it throws a NonEmptyException exception, otherwise, nothing happens.
void	addStreamOfLiteralWords(com.googlecode.javaewah32.Buffer32 buffer, int start, int number) throws a NonEmptyException exception when number is greater than 0
void	addStreamOfNegatedLiteralWords(com.googlecode.javaewah32.Buffer32 buffer, int start, int number) throws a NonEmptyException exception when number is greater than 0
void	addWord(int newData) If the word to be added is non-zero, a NonEmptyException exception is thrown.
void	clear() Empties the container.
void	setSizeInBitsWithinLastWord(int bits) Does nothing.

Methods inherited from class java.lang.Object

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

Constructor Detail

NonEmptyVirtualStorage32

public NonEmptyVirtualStorage32()

Method Detail

addWord

public void addWord(int newData)

If the word to be added is non-zero, a NonEmptyException exception is thrown.

Specified by:

addWord in interface BitmapStorage32

Parameters:

newData - the word

addLiteralWord

public void addLiteralWord(int newData)

If the word to be added is non-zero, a NonEmptyException exception is thrown.

Specified by:

addLiteralWord in interface BitmapStorage32

Parameters:

newData - the word

addStreamOfLiteralWords

public void addStreamOfLiteralWords(com.googlecode.javaewah32.Buffer32 buffer,
                                    int start,
                                    int number)

throws a NonEmptyException exception when number is greater than 0

Specified by:

addStreamOfLiteralWords in interface BitmapStorage32

Parameters:

buffer - the buffer wrapping the literal words

start - the starting point in the array

number - the number of literal words to add

addStreamOfEmptyWords

public void addStreamOfEmptyWords(boolean v,
                                  int number)

If the boolean value is true and number is greater than 0, then it throws a NonEmptyException exception, otherwise, nothing happens.

Specified by:

addStreamOfEmptyWords in interface BitmapStorage32

Parameters:

v - zeros or ones

number - how many to words add

addStreamOfNegatedLiteralWords

public void addStreamOfNegatedLiteralWords(com.googlecode.javaewah32.Buffer32 buffer,
                                           int start,
                                           int number)

throws a NonEmptyException exception when number is greater than 0

Specified by:

addStreamOfNegatedLiteralWords in interface BitmapStorage32

Parameters:

buffer - the buffer wrapping the literal words

start - the starting point in the array

number - the number of literal words to add

clear

public void clear()

Description copied from interface: BitmapStorage32

Empties the container.

Specified by:

clear in interface BitmapStorage32

setSizeInBitsWithinLastWord

public void setSizeInBitsWithinLastWord(int bits)

Does nothing.

Specified by:

setSizeInBitsWithinLastWord in interface BitmapStorage32

Parameters:

bits - the size in bits

See Also:

BitmapStorage.setSizeInBitsWithinLastWord(int)