archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-27 06:45:07 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8241100: Make Boolean, Character, Byte, and Short implement Constable

Browse source 
Reviewed-by: jrose, briangoetz, psandoz
This commit is contained in:
Jorn Vernee 2020-05-04 09:41:01 -07:00
parent 2d8bea8c1d
commit 31041d406a
8 changed files with 330 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

31
src/java.base/share/classes/java/lang/Character.java
View file

@ -25,14 +25,22 @@
package java.lang;
import java.util.Arrays;
import java.util.Map;
import java.util.HashMap;
import java.util.Locale;
import jdk.internal.HotSpotIntrinsicCandidate;
import jdk.internal.misc.VM;
import java.lang.constant.Constable;
import java.lang.constant.DynamicConstantDesc;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.Optional;
import static java.lang.constant.ConstantDescs.BSM_EXPLICIT_CAST;
import static java.lang.constant.ConstantDescs.CD_char;
import static java.lang.constant.ConstantDescs.CD_int;
import static java.lang.constant.ConstantDescs.DEFAULT_NAME;
/**
* The {@code Character} class wraps a value of the primitive
* type {@code char} in an object. An object of class
@ -122,7 +130,7 @@ import jdk.internal.misc.VM;
* @since 1.0
*/
public final
class Character implements java.io.Serializable, Comparable<Character> {
class Character implements java.io.Serializable, Comparable<Character>, Constable {
/**
* The minimum radix available for conversion to and from strings.
* The constant value of this field is the smallest value permitted
@ -602,6 +610,17 @@ class Character implements java.io.Serializable, Comparable<Character> {
*/
public static final int MAX_CODE_POINT = 0X10FFFF;
/**
* Returns an {@link Optional} containing the nominal descriptor for this
* instance.
*
* @return an {@link Optional} describing the {@linkplain Character} instance
* @since 15
*/
@Override
public Optional<DynamicConstantDesc<Character>> describeConstable() {
return Optional.of(DynamicConstantDesc.ofNamed(BSM_EXPLICIT_CAST, DEFAULT_NAME, CD_char, (int) value));
}
/**
* Instances of this class represent particular subsets of the Unicode