Class StaticUnicodeSets

java.lang.Object

org.graalvm.shadowed.com.ibm.icu.impl.StaticUnicodeSets

public class StaticUnicodeSets
extends Object

This class statically initializes UnicodeSets, originally built for number parsing. Microbenchmarks show this to bring a very sizeable performance boost. IMPORTANT ASSUMPTION FOR NUMBER PARSING: All of the sets contain code points (no strings) and they are all case-folded. If this assumption were ever broken, logic in classes such as SymbolMatcher would need to be updated in order to return well-formed sets upon calls to getLeadCodePoints().

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	StaticUnicodeSets.Key

Constructor Summary

Constructors

Constructor	Description
StaticUnicodeSets()

Method Summary

Modifier and Type	Method	Description
static StaticUnicodeSets.Key	chooseCurrency(String str)	Looks through all Currency-related sets for the given string, returning the first match or null if no match was round.
static StaticUnicodeSets.Key	chooseFrom(String str, StaticUnicodeSets.Key key1)	Checks if the UnicodeSet given by key1 contains the given string.
static StaticUnicodeSets.Key	chooseFrom(String str, StaticUnicodeSets.Key key1, StaticUnicodeSets.Key key2)	Checks if the UnicodeSet given by either key1 or key2 contains the string.
static UnicodeSet	get(StaticUnicodeSets.Key key)	Gets the static-allocated UnicodeSet according to the provided key.

Methods inherited from class Object

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

Constructor Details

StaticUnicodeSets

public StaticUnicodeSets()

Method Details

get

public static UnicodeSet get(StaticUnicodeSets.Key key)

Gets the static-allocated UnicodeSet according to the provided key.

Parameters:

key - The desired UnicodeSet according to the enum in this file.

Returns:

The requested UnicodeSet. Guaranteed to be frozen and non-null, but may be empty if an error occurred during data loading.

chooseFrom

public static StaticUnicodeSets.Key chooseFrom(String str,
 StaticUnicodeSets.Key key1)

Checks if the UnicodeSet given by key1 contains the given string.

Parameters:

str - The string to check.

key1 - The set to check.

Returns:

key1 if the set contains str, or COUNT if not.

chooseFrom

public static StaticUnicodeSets.Key chooseFrom(String str,
 StaticUnicodeSets.Key key1,
 StaticUnicodeSets.Key key2)

Checks if the UnicodeSet given by either key1 or key2 contains the string. Exported as U_COMMON_API for numparse_decimal.cpp

Parameters:

str - The string to check.

key1 - The first set to check.

key2 - The second set to check.

Returns:

key1 if that set contains str; key2 if that set contains str; or COUNT if neither set contains str.

chooseCurrency

public static StaticUnicodeSets.Key chooseCurrency(String str)

Looks through all Currency-related sets for the given string, returning the first match or null if no match was round.