Package com.googlecode.concurrenttrees.radix.node.concrete.bytearray

Class ByteArrayCharSequence

java.lang.Object

com.googlecode.concurrenttrees.radix.node.concrete.bytearray.ByteArrayCharSequence

All Implemented Interfaces:

CharSequence

public class ByteArrayCharSequence
extends Object
implements CharSequence

A CharSequence view onto a byte array of UTF-8-encoded characters, with the proviso that all of the characters were encoded as a single byte in UTF-8. This uses Java's built-in casting from UTF-8 to char primitives.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ByteArrayCharSequence.IncompatibleCharacterException

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final byte[]	bytes
(package private) final int	end
(package private) final int	start

Constructor Summary

Constructors

Constructor	Description
ByteArrayCharSequence(byte[] bytes, int start, int end)

Method Summary

Modifier and Type	Method	Description
char	charAt(int index)
int	length()
ByteArrayCharSequence	subSequence(int start, int end)
static byte[]	toSingleByteUtf8Encoding(CharSequence charSequence)	Encodes a given CharSequence into a byte[] in UTF-8 encoding, with the requirement that it must be possible to represent all characters as a single byte in UTF-8.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.CharSequence

chars, codePoints, isEmpty

Field Details

bytes

final byte[] bytes

start

final int start

end

final int end

Constructor Details

ByteArrayCharSequence

public ByteArrayCharSequence(byte[] bytes,
 int start,
 int end)

Method Details

length

public int length()

Specified by:

length in interface CharSequence

charAt

public char charAt(int index)

Specified by:

charAt in interface CharSequence

subSequence

public ByteArrayCharSequence subSequence(int start,
 int end)

Specified by:

subSequence in interface CharSequence

toString

public String toString()

Specified by:

toString in interface CharSequence

Overrides:

toString in class Object

toSingleByteUtf8Encoding

public static byte[] toSingleByteUtf8Encoding(CharSequence charSequence)

Encodes a given CharSequence into a byte[] in UTF-8 encoding, with the requirement that it must be possible to represent all characters as a single byte in UTF-8. Otherwise an exception will be thrown.

Parameters:

charSequence - The CharSequence to encode

Returns:

A new byte[] encoding characters from the given CharSequence in UTF-8

Throws:

IllegalStateException - If the characters cannot be encoded as described