JDK 11 java.base.jmod - Base Module
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⏎ java/util/regex/CharPredicates.java
/*
* Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package java.util.regex;
import java.util.HashMap;
import java.util.Locale;
import java.util.regex.Pattern.CharPredicate;
import java.util.regex.Pattern.BmpCharPredicate;
class CharPredicates {
static final CharPredicate ALPHABETIC() {
return Character::isAlphabetic;
}
// \p{gc=Decimal_Number}
static final CharPredicate DIGIT() {
return Character::isDigit;
}
static final CharPredicate LETTER() {
return Character::isLetter;
}
static final CharPredicate IDEOGRAPHIC() {
return Character::isIdeographic;
}
static final CharPredicate LOWERCASE() {
return Character::isLowerCase;
}
static final CharPredicate UPPERCASE() {
return Character::isUpperCase;
}
static final CharPredicate TITLECASE() {
return Character::isTitleCase;
}
// \p{Whitespace}
static final CharPredicate WHITE_SPACE() {
return ch ->
((((1 << Character.SPACE_SEPARATOR) |
(1 << Character.LINE_SEPARATOR) |
(1 << Character.PARAGRAPH_SEPARATOR)) >> Character.getType(ch)) & 1)
!= 0 || (ch >= 0x9 && ch <= 0xd) || (ch == 0x85);
}
// \p{gc=Control}
static final CharPredicate CONTROL() {
return ch -> Character.getType(ch) == Character.CONTROL;
}
// \p{gc=Punctuation}
static final CharPredicate PUNCTUATION() {
return ch ->
((((1 << Character.CONNECTOR_PUNCTUATION) |
(1 << Character.DASH_PUNCTUATION) |
(1 << Character.START_PUNCTUATION) |
(1 << Character.END_PUNCTUATION) |
(1 << Character.OTHER_PUNCTUATION) |
(1 << Character.INITIAL_QUOTE_PUNCTUATION) |
(1 << Character.FINAL_QUOTE_PUNCTUATION)) >> Character.getType(ch)) & 1)
!= 0;
}
// \p{gc=Decimal_Number}
// \p{Hex_Digit} -> PropList.txt: Hex_Digit
static final CharPredicate HEX_DIGIT() {
return DIGIT().union(ch -> (ch >= 0x0030 && ch <= 0x0039) ||
(ch >= 0x0041 && ch <= 0x0046) ||
(ch >= 0x0061 && ch <= 0x0066) ||
(ch >= 0xFF10 && ch <= 0xFF19) ||
(ch >= 0xFF21 && ch <= 0xFF26) ||
(ch >= 0xFF41 && ch <= 0xFF46));
}
static final CharPredicate ASSIGNED() {
return ch -> Character.getType(ch) != Character.UNASSIGNED;
}
// PropList.txt:Noncharacter_Code_Point
static final CharPredicate NONCHARACTER_CODE_POINT() {
return ch -> (ch & 0xfffe) == 0xfffe || (ch >= 0xfdd0 && ch <= 0xfdef);
}
// \p{alpha}
// \p{digit}
static final CharPredicate ALNUM() {
return ALPHABETIC().union(DIGIT());
}
// \p{Whitespace} --
// [\N{LF} \N{VT} \N{FF} \N{CR} \N{NEL} -> 0xa, 0xb, 0xc, 0xd, 0x85
// \p{gc=Line_Separator}
// \p{gc=Paragraph_Separator}]
static final CharPredicate BLANK() {
return ch ->
Character.getType(ch) == Character.SPACE_SEPARATOR ||
ch == 0x9; // \N{HT}
}
// [^
// \p{space}
// \p{gc=Control}
// \p{gc=Surrogate}
// \p{gc=Unassigned}]
static final CharPredicate GRAPH() {
return ch ->
((((1 << Character.SPACE_SEPARATOR) |
(1 << Character.LINE_SEPARATOR) |
(1 << Character.PARAGRAPH_SEPARATOR) |
(1 << Character.CONTROL) |
(1 << Character.SURROGATE) |
(1 << Character.UNASSIGNED)) >> Character.getType(ch)) & 1)
== 0;
}
// \p{graph}
// \p{blank}
// -- \p{cntrl}
static final CharPredicate PRINT() {
return GRAPH().union(BLANK()).and(CONTROL().negate());
}
// 200C..200D PropList.txt:Join_Control
static final CharPredicate JOIN_CONTROL() {
return ch -> ch == 0x200C || ch == 0x200D;
}
// \p{alpha}
// \p{gc=Mark}
// \p{digit}
// \p{gc=Connector_Punctuation}
// \p{Join_Control} 200C..200D
static final CharPredicate WORD() {
return ALPHABETIC().union(ch -> ((((1 << Character.NON_SPACING_MARK) |
(1 << Character.ENCLOSING_MARK) |
(1 << Character.COMBINING_SPACING_MARK) |
(1 << Character.DECIMAL_DIGIT_NUMBER) |
(1 << Character.CONNECTOR_PUNCTUATION))
>> Character.getType(ch)) & 1) != 0,
JOIN_CONTROL());
}
/////////////////////////////////////////////////////////////////////////////
private static CharPredicate getPosixPredicate(String name) {
switch (name) {
case "ALPHA": return ALPHABETIC();
case "LOWER": return LOWERCASE();
case "UPPER": return UPPERCASE();
case "SPACE": return WHITE_SPACE();
case "PUNCT": return PUNCTUATION();
case "XDIGIT": return HEX_DIGIT();
case "ALNUM": return ALNUM();
case "CNTRL": return CONTROL();
case "DIGIT": return DIGIT();
case "BLANK": return BLANK();
case "GRAPH": return GRAPH();
case "PRINT": return PRINT();
default: return null;
}
}
private static CharPredicate getUnicodePredicate(String name) {
switch (name) {
case "ALPHABETIC": return ALPHABETIC();
case "ASSIGNED": return ASSIGNED();
case "CONTROL": return CONTROL();
case "HEXDIGIT": return HEX_DIGIT();
case "IDEOGRAPHIC": return IDEOGRAPHIC();
case "JOINCONTROL": return JOIN_CONTROL();
case "LETTER": return LETTER();
case "LOWERCASE": return LOWERCASE();
case "NONCHARACTERCODEPOINT": return NONCHARACTER_CODE_POINT();
case "TITLECASE": return TITLECASE();
case "PUNCTUATION": return PUNCTUATION();
case "UPPERCASE": return UPPERCASE();
case "WHITESPACE": return WHITE_SPACE();
case "WORD": return WORD();
case "WHITE_SPACE": return WHITE_SPACE();
case "HEX_DIGIT": return HEX_DIGIT();
case "NONCHARACTER_CODE_POINT": return NONCHARACTER_CODE_POINT();
case "JOIN_CONTROL": return JOIN_CONTROL();
default: return null;
}
}
public static CharPredicate forUnicodeProperty(String propName) {
propName = propName.toUpperCase(Locale.ROOT);
CharPredicate p = getUnicodePredicate(propName);
if (p != null)
return p;
return getPosixPredicate(propName);
}
public static CharPredicate forPOSIXName(String propName) {
return getPosixPredicate(propName.toUpperCase(Locale.ENGLISH));
}
/////////////////////////////////////////////////////////////////////////////
/**
* Returns a predicate matching all characters belong to a named
* UnicodeScript.
*/
static CharPredicate forUnicodeScript(String name) {
final Character.UnicodeScript script;
try {
script = Character.UnicodeScript.forName(name);
return ch -> script == Character.UnicodeScript.of(ch);
} catch (IllegalArgumentException iae) {}
return null;
}
/**
* Returns a predicate matching all characters in a UnicodeBlock.
*/
static CharPredicate forUnicodeBlock(String name) {
final Character.UnicodeBlock block;
try {
block = Character.UnicodeBlock.forName(name);
return ch -> block == Character.UnicodeBlock.of(ch);
} catch (IllegalArgumentException iae) {}
return null;
}
/////////////////////////////////////////////////////////////////////////////
// unicode categories, aliases, properties, java methods ...
static CharPredicate forProperty(String name) {
// Unicode character property aliases, defined in
// http://www.unicode.org/Public/UNIDATA/PropertyValueAliases.txt
switch (name) {
case "Cn": return category(1<<Character.UNASSIGNED);
case "Lu": return category(1<<Character.UPPERCASE_LETTER);
case "Ll": return category(1<<Character.LOWERCASE_LETTER);
case "Lt": return category(1<<Character.TITLECASE_LETTER);
case "Lm": return category(1<<Character.MODIFIER_LETTER);
case "Lo": return category(1<<Character.OTHER_LETTER);
case "Mn": return category(1<<Character.NON_SPACING_MARK);
case "Me": return category(1<<Character.ENCLOSING_MARK);
case "Mc": return category(1<<Character.COMBINING_SPACING_MARK);
case "Nd": return category(1<<Character.DECIMAL_DIGIT_NUMBER);
case "Nl": return category(1<<Character.LETTER_NUMBER);
case "No": return category(1<<Character.OTHER_NUMBER);
case "Zs": return category(1<<Character.SPACE_SEPARATOR);
case "Zl": return category(1<<Character.LINE_SEPARATOR);
case "Zp": return category(1<<Character.PARAGRAPH_SEPARATOR);
case "Cc": return category(1<<Character.CONTROL);
case "Cf": return category(1<<Character.FORMAT);
case "Co": return category(1<<Character.PRIVATE_USE);
case "Cs": return category(1<<Character.SURROGATE);
case "Pd": return category(1<<Character.DASH_PUNCTUATION);
case "Ps": return category(1<<Character.START_PUNCTUATION);
case "Pe": return category(1<<Character.END_PUNCTUATION);
case "Pc": return category(1<<Character.CONNECTOR_PUNCTUATION);
case "Po": return category(1<<Character.OTHER_PUNCTUATION);
case "Sm": return category(1<<Character.MATH_SYMBOL);
case "Sc": return category(1<<Character.CURRENCY_SYMBOL);
case "Sk": return category(1<<Character.MODIFIER_SYMBOL);
case "So": return category(1<<Character.OTHER_SYMBOL);
case "Pi": return category(1<<Character.INITIAL_QUOTE_PUNCTUATION);
case "Pf": return category(1<<Character.FINAL_QUOTE_PUNCTUATION);
case "L": return category(((1<<Character.UPPERCASE_LETTER) |
(1<<Character.LOWERCASE_LETTER) |
(1<<Character.TITLECASE_LETTER) |
(1<<Character.MODIFIER_LETTER) |
(1<<Character.OTHER_LETTER)));
case "M": return category(((1<<Character.NON_SPACING_MARK) |
(1<<Character.ENCLOSING_MARK) |
(1<<Character.COMBINING_SPACING_MARK)));
case "N": return category(((1<<Character.DECIMAL_DIGIT_NUMBER) |
(1<<Character.LETTER_NUMBER) |
(1<<Character.OTHER_NUMBER)));
case "Z": return category(((1<<Character.SPACE_SEPARATOR) |
(1<<Character.LINE_SEPARATOR) |
(1<<Character.PARAGRAPH_SEPARATOR)));
case "C": return category(((1<<Character.CONTROL) |
(1<<Character.FORMAT) |
(1<<Character.PRIVATE_USE) |
(1<<Character.SURROGATE) |
(1<<Character.UNASSIGNED))); // Other
case "P": return category(((1<<Character.DASH_PUNCTUATION) |
(1<<Character.START_PUNCTUATION) |
(1<<Character.END_PUNCTUATION) |
(1<<Character.CONNECTOR_PUNCTUATION) |
(1<<Character.OTHER_PUNCTUATION) |
(1<<Character.INITIAL_QUOTE_PUNCTUATION) |
(1<<Character.FINAL_QUOTE_PUNCTUATION)));
case "S": return category(((1<<Character.MATH_SYMBOL) |
(1<<Character.CURRENCY_SYMBOL) |
(1<<Character.MODIFIER_SYMBOL) |
(1<<Character.OTHER_SYMBOL)));
case "LC": return category(((1<<Character.UPPERCASE_LETTER) |
(1<<Character.LOWERCASE_LETTER) |
(1<<Character.TITLECASE_LETTER)));
case "LD": return category(((1<<Character.UPPERCASE_LETTER) |
(1<<Character.LOWERCASE_LETTER) |
(1<<Character.TITLECASE_LETTER) |
(1<<Character.MODIFIER_LETTER) |
(1<<Character.OTHER_LETTER) |
(1<<Character.DECIMAL_DIGIT_NUMBER)));
case "L1": return range(0x00, 0xFF); // Latin-1
case "all": return Pattern.ALL();
// Posix regular expression character classes, defined in
// http://www.unix.org/onlinepubs/009695399/basedefs/xbd_chap09.html
case "ASCII": return range(0x00, 0x7F); // ASCII
case "Alnum": return ctype(ASCII.ALNUM); // Alphanumeric characters
case "Alpha": return ctype(ASCII.ALPHA); // Alphabetic characters
case "Blank": return ctype(ASCII.BLANK); // Space and tab characters
case "Cntrl": return ctype(ASCII.CNTRL); // Control characters
case "Digit": return range('0', '9'); // Numeric characters
case "Graph": return ctype(ASCII.GRAPH); // printable and visible
case "Lower": return range('a', 'z'); // Lower-case alphabetic
case "Print": return range(0x20, 0x7E); // Printable characters
case "Punct": return ctype(ASCII.PUNCT); // Punctuation characters
case "Space": return ctype(ASCII.SPACE); // Space characters
case "Upper": return range('A', 'Z'); // Upper-case alphabetic
case "XDigit": return ctype(ASCII.XDIGIT); // hexadecimal digits
// Java character properties, defined by methods in Character.java
case "javaLowerCase": return java.lang.Character::isLowerCase;
case "javaUpperCase": return Character::isUpperCase;
case "javaAlphabetic": return java.lang.Character::isAlphabetic;
case "javaIdeographic": return java.lang.Character::isIdeographic;
case "javaTitleCase": return java.lang.Character::isTitleCase;
case "javaDigit": return java.lang.Character::isDigit;
case "javaDefined": return java.lang.Character::isDefined;
case "javaLetter": return java.lang.Character::isLetter;
case "javaLetterOrDigit": return java.lang.Character::isLetterOrDigit;
case "javaJavaIdentifierStart": return java.lang.Character::isJavaIdentifierStart;
case "javaJavaIdentifierPart": return java.lang.Character::isJavaIdentifierPart;
case "javaUnicodeIdentifierStart": return java.lang.Character::isUnicodeIdentifierStart;
case "javaUnicodeIdentifierPart": return java.lang.Character::isUnicodeIdentifierPart;
case "javaIdentifierIgnorable": return java.lang.Character::isIdentifierIgnorable;
case "javaSpaceChar": return java.lang.Character::isSpaceChar;
case "javaWhitespace": return java.lang.Character::isWhitespace;
case "javaISOControl": return java.lang.Character::isISOControl;
case "javaMirrored": return java.lang.Character::isMirrored;
default: return null;
}
}
private static CharPredicate category(final int typeMask) {
return ch -> (typeMask & (1 << Character.getType(ch))) != 0;
}
private static CharPredicate range(final int lower, final int upper) {
return (BmpCharPredicate)ch -> lower <= ch && ch <= upper;
}
private static CharPredicate ctype(final int ctype) {
return (BmpCharPredicate)ch -> ch < 128 && ASCII.isType(ch, ctype);
}
/////////////////////////////////////////////////////////////////////////////
/**
* Posix ASCII variants, not in the lookup map
*/
static final BmpCharPredicate ASCII_DIGIT() {
return ch -> ch < 128 && ASCII.isDigit(ch);
}
static final BmpCharPredicate ASCII_WORD() {
return ch -> ch < 128 && ASCII.isWord(ch);
}
static final BmpCharPredicate ASCII_SPACE() {
return ch -> ch < 128 && ASCII.isSpace(ch);
}
}
⏎ java/util/regex/CharPredicates.java
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File name: java.base-11.0.1-src.zip File size: 8740354 bytes Release date: 2018-11-04 Download
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