Class CharacterProperties

java.lang.Object

com.ibm.icu.lang.CharacterProperties

public final class CharacterProperties
extends Object

Sets and maps for Unicode properties. The methods here return an object per property: A set for each ICU-supported binary property with all code points for which the property is true. A map for each ICU-supported enumerated/catalog/int-valued property which maps all Unicode code points to their values for that property.

For details see the method descriptions. For lookup of property values by code point see class UCharacter.

Field Summary

Fields

Modifier and Type	Field	Description
private static final AtomicReferenceArray<CodePointMap>	MAPS
private static final AtomicReferenceArray<UnicodeSet>	SETS

Constructor Summary

Constructors

Modifier	Constructor	Description
private	CharacterProperties()

Method Summary

Modifier and Type	Method	Description
static final UnicodeSet	getBinaryPropertySet(int property)	Returns a frozen UnicodeSet for a binary property.
static final CodePointMap	getIntPropertyMap(int property)	Returns an immutable CodePointMap for an enumerated/catalog/int-valued property.
private static CodePointMap	makeMap(int property)
private static UnicodeSet	makeSet(int property)

Methods inherited from class Object

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

Field Details

SETS

private static final AtomicReferenceArray<UnicodeSet> SETS

MAPS

private static final AtomicReferenceArray<CodePointMap> MAPS

Constructor Details

CharacterProperties

private CharacterProperties()

Method Details

makeSet

private static UnicodeSet makeSet(int property)

makeMap

private static CodePointMap makeMap(int property)

getBinaryPropertySet

public static final UnicodeSet getBinaryPropertySet(int property)

Returns a frozen UnicodeSet for a binary property. Throws an exception if the property number is not one for a binary property.

The returned set contains all code points for which the property is true.

Parameters:

property - UProperty.BINARY_START..UProperty.BINARY_LIMIT-1

Returns:

the property as a set

See Also:

• UProperty
• UCharacter.hasBinaryProperty(int, int)

getIntPropertyMap

public static final CodePointMap getIntPropertyMap(int property)

Returns an immutable CodePointMap for an enumerated/catalog/int-valued property. Throws an exception if the property number is not one for an "int property".

The returned object maps all Unicode code points to their values for that property. For documentation of the integer values see UCharacter.getIntPropertyValue(int, int).

The actual type of the returned object differs between properties and may change over time.

Parameters:

property - UProperty.INT_START..UProperty.INT_LIMIT-1

Returns:

the property as a map

See Also:

• UProperty
• UCharacter.getIntPropertyValue(int, int)