ej.basictool

Class BitFieldHelper

java.lang.Object

ej.basictool.BitFieldHelper

public class BitFieldHelper
extends Object

Helper to manage bit fields.

Constructor Summary

Constructors

Constructor and Description
BitFieldHelper()

Method Summary

Modifier and Type	Method and Description
static boolean	getBooleanProperty(int field, int mask) Gets a boolean value in a bit field.
static boolean	getBooleanPropertyAtOffset(int field, int offset) Gets a boolean value in a bit field.
static int	getIntProperty(int field, int mask, int offset) Gets a int value in a bit field.
static int	setBooleanProperty(int field, boolean value, int mask) Sets a boolean value in a bit field.
static int	setBooleanProperty(int field, int mask) Forces the boolean to true in a bit field.
static int	setBooleanPropertyAtOffset(int field, boolean value, int offset) Forces the boolean to true in a bit field.
static int	setBooleanPropertyAtOffset(int field, int offset) Forces the boolean to true in a bit field.
static int	setIntProperty(int field, int value, int mask, int offset) Sets a int value in a bit field.
static int	unsetBooleanProperty(int field, int mask) Forces the boolean to false in a bit field.
static int	unsetBooleanPropertyAtOffset(int field, int offset) Forces the boolean to false in a bit field.

Methods inherited from class java.lang.Object

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

Constructor Detail

BitFieldHelper

public BitFieldHelper()

Method Detail

setBooleanProperty

public static int setBooleanProperty(int field,
                                     boolean value,
                                     int mask)

Sets a boolean value in a bit field.

Parameters:

field - the bit field.

value - the value to set.

mask - the bit mask of the value in the int.

Returns:

the modified bit field.

setBooleanPropertyAtOffset

public static int setBooleanPropertyAtOffset(int field,
                                             boolean value,
                                             int offset)

Forces the boolean to true in a bit field.

Parameters:

field - the bit field.

value - the value to set.

offset - the offset of the boolean in the int.

Returns:

the modified bit field.

setBooleanProperty

public static int setBooleanProperty(int field,
                                     int mask)

Forces the boolean to true in a bit field.

Parameters:

field - the bit field.

mask - the bit mask of the value in the int.

Returns:

the modified bit field.

setBooleanPropertyAtOffset

public static int setBooleanPropertyAtOffset(int field,
                                             int offset)

Forces the boolean to true in a bit field.

Parameters:

field - the bit field.

offset - the offset of the boolean in the int.

Returns:

the modified bit field.

unsetBooleanProperty

public static int unsetBooleanProperty(int field,
                                       int mask)

Forces the boolean to false in a bit field.

Parameters:

field - the bit field.

mask - the bit mask of the value in the int.

Returns:

the modified bit field.

unsetBooleanPropertyAtOffset

public static int unsetBooleanPropertyAtOffset(int field,
                                               int offset)

Forces the boolean to false in a bit field.

Parameters:

field - the bit field.

offset - the offset of the boolean in the int.

Returns:

the modified bit field.

getBooleanProperty

public static boolean getBooleanProperty(int field,
                                         int mask)

Gets a boolean value in a bit field.

Parameters:

field - the bit field.

mask - the bit mask of the value in the int.

Returns:

the boolean value.

getBooleanPropertyAtOffset

public static boolean getBooleanPropertyAtOffset(int field,
                                                 int offset)

Gets a boolean value in a bit field.

Parameters:

field - the bit field.

offset - the offset of the boolean in the int.

Returns:

the boolean value.

setIntProperty

public static int setIntProperty(int field,
                                 int value,
                                 int mask,
                                 int offset)

Sets a int value in a bit field.

Parameters:

field - the bit field.

value - the value to set.

mask - the bit mask of the value in the int.

offset - the offset of the value in the int.

Returns:

the modified bit field.

getIntProperty

public static int getIntProperty(int field,
                                 int mask,
                                 int offset)

Gets a int value in a bit field.

Parameters:

field - the bit field.

mask - the bit mask of the value in the int.

offset - the offset of the value in the int.

Returns:

the int value.