org.apache.xalan.xsltc.dom

Class BitArray

java.lang.Object

org.apache.xalan.xsltc.dom.BitArray

All Implemented Interfaces:

Externalizable, Serializable

public class BitArray
extends Object
implements Externalizable

Author:

Morten Jorgensen

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BitArray() Constructor.
BitArray(int size)
BitArray(int size, int[] bits)

Method Summary

Modifier and Type	Method and Description
BitArray	cloneArray()
int[]	data() Returns the integer array in which the bit array is contained
boolean	getBit(int bit) Returns true if the given bit is set
int	getBitNumber(int pos)
int	getMask() See setMask()
int	getNextBit(int startBit) Returns the next set bit from a given position
BitArray	merge(BitArray other) Merge two bit arrays.
void	readExternal(ObjectInput in) Read the whole tree from a file (serialized)
void	resize(int newSize) Resizes the bit array - try to avoid using this method!!!
void	setBit(int bit) Sets a given bit
void	setMask(int mask) Set the mask for this bit array.
int	size() Returns the size of this bit array (in bits).
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

BitArray

public BitArray()

Constructor. Defines the initial size of the bit array (in bits).

BitArray

public BitArray(int size)

BitArray

public BitArray(int size,
                int[] bits)

Method Detail

setMask

public void setMask(int mask)

Set the mask for this bit array. The upper 8 bits of this mask indicate the DOM in which the nodes in this array belong.

getMask

public int getMask()

See setMask()

size

public final int size()

Returns the size of this bit array (in bits).

getBit

public final boolean getBit(int bit)

Returns true if the given bit is set

getNextBit

public final int getNextBit(int startBit)

Returns the next set bit from a given position

getBitNumber

public final int getBitNumber(int pos)

data

public final int[] data()

Returns the integer array in which the bit array is contained

setBit

public final void setBit(int bit)

Sets a given bit

merge

public final BitArray merge(BitArray other)

Merge two bit arrays. This currently only works for nodes from a single DOM (because there is only one _mask per array).

resize

public final void resize(int newSize)

Resizes the bit array - try to avoid using this method!!!

cloneArray

public BitArray cloneArray()

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Read the whole tree from a file (serialized)

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException