com.ibm.icu.impl

Class Trie2_16

java.lang.Object

com.ibm.icu.impl.Trie2

com.ibm.icu.impl.Trie2_16

All Implemented Interfaces:

Iterable<Trie2.Range>

public final class Trie2_16
extends Trie2

Nested Class Summary

Nested classes/interfaces inherited from class com.ibm.icu.impl.Trie2

Trie2.CharSequenceIterator, Trie2.CharSequenceValues, Trie2.Range, Trie2.ValueMapper

Method Summary

Modifier and Type	Method and Description
static Trie2_16	createFromSerialized(ByteBuffer bytes) Create a Trie2 from its serialized form.
int	get(int codePoint) Get the value for a code point as stored in the Trie2.
int	getFromU16SingleLead(char codeUnit) Get a Trie2 value for a UTF-16 code unit.
int	getSerializedLength()
int	serialize(OutputStream os) Serialize a Trie2_16 onto an OutputStream.

Methods inherited from class com.ibm.icu.impl.Trie2

charSequenceIterator, equals, getVersion, hashCode, iterator, iterator, iteratorForLeadSurrogate, iteratorForLeadSurrogate, serializeHeader

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Detail

createFromSerialized

public static Trie2_16 createFromSerialized(ByteBuffer bytes)
                                     throws IOException

Create a Trie2 from its serialized form. Inverse of utrie2_serialize(). The serialized format is identical between ICU4C and ICU4J, so this function will work with serialized Trie2s from either. The serialized Trie2 in the bytes may be in either little or big endian byte order. This allows using serialized Tries from ICU4C without needing to consider the byte order of the system that created them.

Parameters:

bytes - a byte buffer to the serialized form of a UTrie2.

Returns:

An unserialized Trie2_16, ready for use.

Throws:

IllegalArgumentException - if the buffer does not contain a serialized Trie2.

IOException - if a read error occurs in the buffer.

ClassCastException - if the bytes contain a serialized Trie2_32

get

public final int get(int codePoint)

Get the value for a code point as stored in the Trie2.

Specified by:

get in class Trie2

Parameters:

codePoint - the code point

Returns:

the value

getFromU16SingleLead

public int getFromU16SingleLead(char codeUnit)

Get a Trie2 value for a UTF-16 code unit. This function returns the same value as get() if the input character is outside of the lead surrogate range There are two values stored in a Trie2 for inputs in the lead surrogate range. This function returns the alternate value, while Trie2.get() returns the main value.

Specified by:

getFromU16SingleLead in class Trie2

Parameters:

codeUnit - a 16 bit code unit or lead surrogate value.

Returns:

the value

serialize

public int serialize(OutputStream os)
              throws IOException

Serialize a Trie2_16 onto an OutputStream. A Trie2 can be serialized multiple times. The serialized data is compatible with ICU4C UTrie2 serialization. Trie2 serialization is unrelated to Java object serialization.

Parameters:

os - the stream to which the serialized Trie2 data will be written.

Returns:

the number of bytes written.

Throws:

IOException

getSerializedLength

public int getSerializedLength()

Returns:

the number of bytes of the serialized trie