org.graalvm.compiler.bytecode

Class Bytes

java.lang.Object

org.graalvm.compiler.bytecode.Bytes

public class Bytes
extends Object

A collection of utility methods for dealing with bytes, particularly in byte arrays.

Constructor Summary

Constructors

Constructor and Description
Bytes()

Method Summary

Modifier and Type	Method and Description
static int	beS1(byte[] data, int bci) Gets a signed 1-byte value.
static int	beS2(byte[] data, int bci) Gets a signed 2-byte big-endian value.
static int	beS4(byte[] data, int bci) Gets a signed 4-byte big-endian value.
static int	beSVar(byte[] data, int bci, boolean fourByte) Gets either a signed 2-byte or a signed 4-byte big-endian value.
static int	beU1(byte[] data, int bci) Gets an unsigned 1-byte value.
static int	beU2(byte[] data, int bci) Gets an unsigned 2-byte big-endian value.

Methods inherited from class java.lang.Object

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

Constructor Detail

Bytes

public Bytes()

Method Detail

beS1

public static int beS1(byte[] data,
                       int bci)

Gets a signed 1-byte value.

Parameters:

data - the array containing the data

bci - the start index of the value to retrieve

Returns:

the signed 1-byte value at index bci in array data

beS2

public static int beS2(byte[] data,
                       int bci)

Gets a signed 2-byte big-endian value.

Parameters:

data - the array containing the data

bci - the start index of the value to retrieve

Returns:

the signed 2-byte, big-endian, value at index bci in array data

beU1

public static int beU1(byte[] data,
                       int bci)

Gets an unsigned 1-byte value.

Parameters:

data - the array containing the data

bci - the start index of the value to retrieve

Returns:

the unsigned 1-byte value at index bci in array data

beU2

public static int beU2(byte[] data,
                       int bci)

Gets an unsigned 2-byte big-endian value.

Parameters:

data - the array containing the data

bci - the start index of the value to retrieve

Returns:

the unsigned 2-byte, big-endian, value at index bci in array data

beS4

public static int beS4(byte[] data,
                       int bci)

Gets a signed 4-byte big-endian value.

Parameters:

data - the array containing the data

bci - the start index of the value to retrieve

Returns:

the signed 4-byte, big-endian, value at index bci in array data

beSVar

public static int beSVar(byte[] data,
                         int bci,
                         boolean fourByte)

Gets either a signed 2-byte or a signed 4-byte big-endian value.

Parameters:

data - the array containing the data

bci - the start index of the value to retrieve

fourByte - if true, this method will return a 4-byte value

Returns:

the signed 2 or 4-byte, big-endian, value at index bci in array data