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8303018: Unicode Emoji Properties

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Reviewed-by: prr, erikj, rriggs
This commit is contained in:
Naoto Sato 2023-03-20 20:20:19 +00:00
parent bc0ed730f2
commit f593a6b52e
19 changed files with 643 additions and 278 deletions
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107
src/java.base/share/classes/java/lang/Character.java
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@ -10781,6 +10781,113 @@ class Character implements java.io.Serializable, Comparable<Character>, Constabl
return CharacterData.of(codePoint).isIdentifierIgnorable(codePoint);
}
/**
* Determines if the specified character (Unicode code point) is an Emoji.
* <p>
* A character is considered to be an Emoji if and only if it has the {@code Emoji}
* property, defined in
* <a href="https://unicode.org/reports/tr51/#Emoji_Properties_and_Data_Files">
* Unicode Emoji (Technical Standard #51)</a>.
*
* @param codePoint the character (Unicode code point) to be tested.
* @return {@code true} if the character is an Emoji;
* {@code false} otherwise.
* @since 21
*/
public static boolean isEmoji(int codePoint) {
return CharacterData.of(codePoint).isEmoji(codePoint);
}
/**
* Determines if the specified character (Unicode code point) has the
* Emoji Presentation property by default.
* <p>
* A character is considered to have the Emoji Presentation property if and
* only if it has the {@code Emoji_Presentation} property, defined in
* <a href="https://unicode.org/reports/tr51/#Emoji_Properties_and_Data_Files">
* Unicode Emoji (Technical Standard #51)</a>.
*
* @param codePoint the character (Unicode code point) to be tested.
* @return {@code true} if the character has the Emoji Presentation
* property; {@code false} otherwise.
* @since 21
*/
public static boolean isEmojiPresentation(int codePoint) {
return CharacterData.of(codePoint).isEmojiPresentation(codePoint);
}
/**
* Determines if the specified character (Unicode code point) is an
* Emoji Modifier.
* <p>
* A character is considered to be an Emoji Modifier if and only if it has
* the {@code Emoji_Modifier} property, defined in
* <a href="https://unicode.org/reports/tr51/#Emoji_Properties_and_Data_Files">
* Unicode Emoji (Technical Standard #51)</a>.
*
* @param codePoint the character (Unicode code point) to be tested.
* @return {@code true} if the character is an Emoji Modifier;
* {@code false} otherwise.
* @since 21
*/
public static boolean isEmojiModifier(int codePoint) {
return CharacterData.of(codePoint).isEmojiModifier(codePoint);
}
/**
* Determines if the specified character (Unicode code point) is an
* Emoji Modifier Base.
* <p>
* A character is considered to be an Emoji Modifier Base if and only if it has
* the {@code Emoji_Modifier_Base} property, defined in
* <a href="https://unicode.org/reports/tr51/#Emoji_Properties_and_Data_Files">
* Unicode Emoji (Technical Standard #51)</a>.
*
* @param codePoint the character (Unicode code point) to be tested.
* @return {@code true} if the character is an Emoji Modifier Base;
* {@code false} otherwise.
* @since 21
*/
public static boolean isEmojiModifierBase(int codePoint) {
return CharacterData.of(codePoint).isEmojiModifierBase(codePoint);
}
/**
* Determines if the specified character (Unicode code point) is an
* Emoji Component.
* <p>
* A character is considered to be an Emoji Component if and only if it has
* the {@code Emoji_Component} property, defined in
* <a href="https://unicode.org/reports/tr51/#Emoji_Properties_and_Data_Files">
* Unicode Emoji (Technical Standard #51)</a>.
*
* @param codePoint the character (Unicode code point) to be tested.
* @return {@code true} if the character is an Emoji Component;
* {@code false} otherwise.
* @since 21
*/
public static boolean isEmojiComponent(int codePoint) {
return CharacterData.of(codePoint).isEmojiComponent(codePoint);
}
/**
* Determines if the specified character (Unicode code point) is
* an Extended Pictographic.
* <p>
* A character is considered to be an Extended Pictographic if and only if it has
* the {@code Extended_Pictographic} property, defined in
* <a href="https://unicode.org/reports/tr51/#Emoji_Properties_and_Data_Files">
* Unicode Emoji (Technical Standard #51)</a>.
*
* @param codePoint the character (Unicode code point) to be tested.
* @return {@code true} if the character is an Extended Pictographic;
* {@code false} otherwise.
* @since 21
*/
public static boolean isExtendedPictographic(int codePoint) {
return CharacterData.of(codePoint).isExtendedPictographic(codePoint);
}
/**
* Converts the character argument to lowercase using case
* mapping information from the UnicodeData file.