io.rsocket.util

Class NumberUtils

java.lang.Object

io.rsocket.util.NumberUtils

public final class NumberUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	MEDIUM_BYTES The size of a medium in bytes.

Method Summary

Modifier and Type	Method and Description
static void	encodeUnsignedMedium(ByteBuf byteBuf, int i) Encode an unsigned medium integer on 3 bytes / 24 bits.
static int	requireNonNegative(int i, String message) Requires that an int is greater than or equal to zero.
static int	requirePositive(int i, String message) Requires that an int is greater than zero.
static long	requirePositive(long l, String message) Requires that a long is greater than zero.
static int	requireUnsignedByte(int i) Requires that an int can be represented as an unsigned byte.
static int	requireUnsignedMedium(int i) Requires that an int can be represented as an unsigned medium.
static int	requireUnsignedShort(int i) Requires that an int can be represented as an unsigned short.

Methods inherited from class java.lang.Object

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

Field Detail

MEDIUM_BYTES

public static final int MEDIUM_BYTES

The size of a medium in bytes.

See Also:

Constant Field Values

Method Detail

requireNonNegative

public static int requireNonNegative(int i,
                                     String message)

Requires that an int is greater than or equal to zero.

Parameters:

i - the int to test

message - detail message to be used in the event that a IllegalArgumentException is thrown

Returns:

the int if greater than or equal to zero

Throws:

IllegalArgumentException - if i is less than zero

requirePositive

public static long requirePositive(long l,
                                   String message)

Requires that a long is greater than zero.

Parameters:

l - the long to test

message - detail message to be used in the event that a IllegalArgumentException is thrown

Returns:

the long if greater than zero

Throws:

IllegalArgumentException - if l is less than or equal to zero

requirePositive

public static int requirePositive(int i,
                                  String message)

Requires that an int is greater than zero.

Parameters:

i - the int to test

message - detail message to be used in the event that a IllegalArgumentException is thrown

Returns:

the int if greater than zero

Throws:

IllegalArgumentException - if i is less than or equal to zero

requireUnsignedByte

public static int requireUnsignedByte(int i)

Requires that an int can be represented as an unsigned byte.

Parameters:

i - the int to test

Returns:

the int if it can be represented as an unsigned byte

Throws:

IllegalArgumentException - if i cannot be represented as an unsigned byte

requireUnsignedMedium

public static int requireUnsignedMedium(int i)

Requires that an int can be represented as an unsigned medium.

Parameters:

i - the int to test

Returns:

the int if it can be represented as an unsigned medium

Throws:

IllegalArgumentException - if i cannot be represented as an unsigned medium

requireUnsignedShort

public static int requireUnsignedShort(int i)

Requires that an int can be represented as an unsigned short.

Parameters:

i - the int to test

Returns:

the int if it can be represented as an unsigned short

Throws:

IllegalArgumentException - if i cannot be represented as an unsigned short

encodeUnsignedMedium

public static void encodeUnsignedMedium(ByteBuf byteBuf,
                                        int i)

Encode an unsigned medium integer on 3 bytes / 24 bits. This can be decoded directly by the ByteBuf.readUnsignedMedium() method.

Parameters:

byteBuf - the ByteBuf into which to write the bits

i - the medium integer to encode

See Also:

requireUnsignedMedium(int)