Graal Sdk 23.1.1 · org.graalvm.polyglot.io.ByteSequence

A ByteSequence is a readable sequence of byte values. This interface provides uniform, read-only access to many different kinds of byte sequences.

This interface does not refine the general contracts of the equals and hashCode methods. The result of comparing two objects that implement ByteSequence is therefore, in general, undefined. Each object may be implemented by a different class, and there is no guarantee that each class will be capable of testing its instances for equality with those of the other. It is therefore inappropriate to use arbitrary ByteSequence instances as elements in a set or as keys in a map.

Method Summary

Modifier and Type	Method and Description
public byte	Returns: the specified `byte` value byteAt(int the index of the `byte` value to be returned index) Returns the `byte` value at the specified index.
public default IntStream	Returns: an IntStream of byte values from this sequence bytes() Returns a stream of `int` zero-extending the `byte` values from this sequence.
public static ByteSequence	create(byte[] buffer) Creates a `ByteSequence` from an existing `byte[]`.
public int	Returns: the number of `byte`s in this sequence length() Returns the length of this byte sequence.
public default ByteSequence	Returns: the specified subsequence subSequence(int the start index, inclusive startIndex, int the end index, exclusive endIndex) Returns a `ByteSequence` that is a subsequence of this sequence.
public default byte[]	toByteArray() Returns a `byte[]` containing the bytes in this sequence in the same order as this sequence.

Method Detail

byteAt back to summary

byteAt	back to summary
public byte byteAt(int index) Returns the `byte` value at the specified index. An index ranges from zero to `length() - 1`. The first `char` value of the sequence is at index zero, the next at index one, and so on, as for array indexing. Parameters index:int the index of the `byte` value to be returned Returns:byte the specified `byte` value Exceptions IndexOutOfBoundsException: if the `index` argument is negative or not less than `length()` Since 19.0

public byte byteAt(int index)

Returns the byte value at the specified index. An index ranges from zero to length() - 1. The first char value of the sequence is at index zero, the next at index one, and so on, as for array indexing.

Parameters

index:int: the index of the byte value to be returned

Returns:byte

the specified byte value

Exceptions

IndexOutOfBoundsException:: if the index argument is negative or not less than length()

Since

19.0

bytes back to summary

bytes	back to summary
public default IntStream bytes() Returns a stream of `int` zero-extending the `byte` values from this sequence. Returns:IntStream an IntStream of byte values from this sequence Since 19.0

public default IntStream bytes()

Returns a stream of int zero-extending the byte values from this sequence.

Returns:IntStream: an IntStream of byte values from this sequence
Since: 19.0

create back to summary

create	back to summary
public static ByteSequence create(byte[] buffer) Creates a `ByteSequence` from an existing `byte[]`. The byte array is not defensively copied, therefore the given bytes must not mutate to ensure the contract of an immutable ByteSequence. Since 19.0

public static ByteSequence create(byte[] buffer)

Creates a ByteSequence from an existing byte[]. The byte array is not defensively copied, therefore the given bytes must not mutate to ensure the contract of an immutable ByteSequence.

Since: 19.0

length back to summary

length	back to summary
public int length() Returns the length of this byte sequence. Returns:int the number of `byte`s in this sequence Since 19.0

public int length()

Returns the length of this byte sequence.

Returns:int: the number of bytes in this sequence
Since: 19.0

subSequence back to summary

subSequence	back to summary
public default ByteSequence subSequence(int startIndex, int endIndex) Returns a `ByteSequence` that is a subsequence of this sequence. The subsequence starts with the `byte` value at the specified index and ends with the `byte` value at index `end - 1`. The length (in `byte`s) of the returned sequence is `end - start`, so if `start == end` then an empty sequence is returned. Parameters startIndex:int the start index, inclusive endIndex:int the end index, exclusive Returns:ByteSequence the specified subsequence Exceptions IndexOutOfBoundsException: if `start` or `end` are negative, if `end` is greater than `length()`, or if `start` is greater than `end` Since 19.0

public default ByteSequence subSequence(int startIndex, int endIndex)

Returns a ByteSequence that is a subsequence of this sequence. The subsequence starts with the byte value at the specified index and ends with the byte value at index end - 1. The length (in bytes) of the returned sequence is end - start, so if start == end then an empty sequence is returned.

Parameters

startIndex:int: the start index, inclusive
endIndex:int: the end index, exclusive

Returns:ByteSequence

the specified subsequence

Exceptions

IndexOutOfBoundsException:: if start or end are negative, if end is greater than length(), or if start is greater than end

Since

19.0

toByteArray back to summary

toByteArray	back to summary
public default byte[] toByteArray() Returns a `byte[]` containing the bytes in this sequence in the same order as this sequence. The length of the byte array will be the length of this sequence. Creates a new byte array with every invocation. Since 19.0

public default byte[] toByteArray()

Returns a byte[] containing the bytes in this sequence in the same order as this sequence. The length of the byte array will be the length of this sequence. Creates a new byte array with every invocation.

Since: 19.0

public Interface ByteSequence

Method Summary

Method Detail