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The Qbicc builder for the java.base JDK module
/*
* Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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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, boolean caseIns) {
return switch (name) {
case "ALPHA" -> ALPHABETIC();
case "LOWER" -> caseIns
? LOWERCASE().union(UPPERCASE(), TITLECASE())
: LOWERCASE();
case "UPPER" -> caseIns
? UPPERCASE().union(LOWERCASE(), TITLECASE())
: UPPERCASE();
case "SPACE" -> WHITE_SPACE();
case "PUNCT" -> PUNCTUATION();
case "XDIGIT" -> HEX_DIGIT();
case "ALNUM" -> ALNUM();
case "CNTRL" -> CONTROL();
case "DIGIT" -> DIGIT();
case "BLANK" -> BLANK();
case "GRAPH" -> GRAPH();
case "PRINT" -> PRINT();
default -> null;
};
}
private static CharPredicate getUnicodePredicate(String name, boolean caseIns) {
return switch (name) {
case "ALPHABETIC" -> ALPHABETIC();
case "ASSIGNED" -> ASSIGNED();
case "CONTROL" -> CONTROL();
case "HEXDIGIT", "HEX_DIGIT" -> HEX_DIGIT();
case "IDEOGRAPHIC" -> IDEOGRAPHIC();
case "JOINCONTROL", "JOIN_CONTROL" -> JOIN_CONTROL();
case "LETTER" -> LETTER();
case "LOWERCASE" -> caseIns
? LOWERCASE().union(UPPERCASE(), TITLECASE())
: LOWERCASE();
case "NONCHARACTERCODEPOINT", "NONCHARACTER_CODE_POINT" -> NONCHARACTER_CODE_POINT();
case "TITLECASE" -> caseIns
? TITLECASE().union(LOWERCASE(), UPPERCASE())
: TITLECASE();
case "PUNCTUATION" -> PUNCTUATION();
case "UPPERCASE" -> caseIns
? UPPERCASE().union(LOWERCASE(), TITLECASE())
: UPPERCASE();
case "WHITESPACE", "WHITE_SPACE" -> WHITE_SPACE();
case "WORD" -> WORD();
default -> null;
};
}
public static CharPredicate forUnicodeProperty(String propName, boolean caseIns) {
propName = propName.toUpperCase(Locale.ROOT);
CharPredicate p = getUnicodePredicate(propName, caseIns);
if (p != null)
return p;
return getPosixPredicate(propName, caseIns);
}
public static CharPredicate forPOSIXName(String propName, boolean caseIns) {
return getPosixPredicate(propName.toUpperCase(Locale.ENGLISH), caseIns);
}
/////////////////////////////////////////////////////////////////////////////
/**
* 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, boolean caseIns) {
// Unicode character property aliases, defined in
// http://www.unicode.org/Public/UNIDATA/PropertyValueAliases.txt
return switch (name) {
case "Cn" -> category(1 << Character.UNASSIGNED);
case "Lu" -> category(caseIns ? (1 << Character.LOWERCASE_LETTER) |
(1 << Character.UPPERCASE_LETTER) |
(1 << Character.TITLECASE_LETTER)
: (1 << Character.UPPERCASE_LETTER));
case "Ll" -> category(caseIns ? (1 << Character.LOWERCASE_LETTER) |
(1 << Character.UPPERCASE_LETTER) |
(1 << Character.TITLECASE_LETTER)
: (1 << Character.LOWERCASE_LETTER));
case "Lt" -> category(caseIns ? (1 << Character.LOWERCASE_LETTER) |
(1 << Character.UPPERCASE_LETTER) |
(1 << Character.TITLECASE_LETTER)
: (1 << Character.TITLECASE_LETTER));
case "Lm" -> category(1 << Character.MODIFIER_LETTER);
case "Lo" -> category(1 << Character.OTHER_LETTER);
case "Mn" -> category(1 << Character.NON_SPACING_MARK);
case "Me" -> category(1 << Character.ENCLOSING_MARK);
case "Mc" -> category(1 << Character.COMBINING_SPACING_MARK);
case "Nd" -> category(1 << Character.DECIMAL_DIGIT_NUMBER);
case "Nl" -> category(1 << Character.LETTER_NUMBER);
case "No" -> category(1 << Character.OTHER_NUMBER);
case "Zs" -> category(1 << Character.SPACE_SEPARATOR);
case "Zl" -> category(1 << Character.LINE_SEPARATOR);
case "Zp" -> category(1 << Character.PARAGRAPH_SEPARATOR);
case "Cc" -> category(1 << Character.CONTROL);
case "Cf" -> category(1 << Character.FORMAT);
case "Co" -> category(1 << Character.PRIVATE_USE);
case "Cs" -> category(1 << Character.SURROGATE);
case "Pd" -> category(1 << Character.DASH_PUNCTUATION);
case "Ps" -> category(1 << Character.START_PUNCTUATION);
case "Pe" -> category(1 << Character.END_PUNCTUATION);
case "Pc" -> category(1 << Character.CONNECTOR_PUNCTUATION);
case "Po" -> category(1 << Character.OTHER_PUNCTUATION);
case "Sm" -> category(1 << Character.MATH_SYMBOL);
case "Sc" -> category(1 << Character.CURRENCY_SYMBOL);
case "Sk" -> category(1 << Character.MODIFIER_SYMBOL);
case "So" -> category(1 << Character.OTHER_SYMBOL);
case "Pi" -> category(1 << Character.INITIAL_QUOTE_PUNCTUATION);
case "Pf" -> category(1 << Character.FINAL_QUOTE_PUNCTUATION);
case "L" -> category(((1 << Character.UPPERCASE_LETTER) |
(1 << Character.LOWERCASE_LETTER) |
(1 << Character.TITLECASE_LETTER) |
(1 << Character.MODIFIER_LETTER) |
(1 << Character.OTHER_LETTER)));
case "M" -> category(((1 << Character.NON_SPACING_MARK) |
(1 << Character.ENCLOSING_MARK) |
(1 << Character.COMBINING_SPACING_MARK)));
case "N" -> category(((1 << Character.DECIMAL_DIGIT_NUMBER) |
(1 << Character.LETTER_NUMBER) |
(1 << Character.OTHER_NUMBER)));
case "Z" -> category(((1 << Character.SPACE_SEPARATOR) |
(1 << Character.LINE_SEPARATOR) |
(1 << Character.PARAGRAPH_SEPARATOR)));
case "C" -> category(((1 << Character.CONTROL) |
(1 << Character.FORMAT) |
(1 << Character.PRIVATE_USE) |
(1 << Character.SURROGATE) |
(1 << Character.UNASSIGNED))); // Other
case "P" -> 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" -> category(((1 << Character.MATH_SYMBOL) |
(1 << Character.CURRENCY_SYMBOL) |
(1 << Character.MODIFIER_SYMBOL) |
(1 << Character.OTHER_SYMBOL)));
case "LC" -> category(((1 << Character.UPPERCASE_LETTER) |
(1 << Character.LOWERCASE_LETTER) |
(1 << Character.TITLECASE_LETTER)));
case "LD" -> 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" -> range(0x00, 0xFF); // Latin-1
case "all" -> Pattern.ALL();
// Posix regular expression character classes, defined in
// http://www.unix.org/onlinepubs/009695399/basedefs/xbd_chap09.html
case "ASCII" -> range(0x00, 0x7F); // ASCII
case "Alnum" -> ctype(ASCII.ALNUM); // Alphanumeric characters
case "Alpha" -> ctype(ASCII.ALPHA); // Alphabetic characters
case "Blank" -> ctype(ASCII.BLANK); // Space and tab characters
case "Cntrl" -> ctype(ASCII.CNTRL); // Control characters
case "Digit" -> range('0', '9'); // Numeric characters
case "Graph" -> ctype(ASCII.GRAPH); // printable and visible
case "Lower" -> caseIns ? ctype(ASCII.ALPHA)
: range('a', 'z'); // Lower-case alphabetic
case "Print" -> range(0x20, 0x7E); // Printable characters
case "Punct" -> ctype(ASCII.PUNCT); // Punctuation characters
case "Space" -> ctype(ASCII.SPACE); // Space characters
case "Upper" -> caseIns ? ctype(ASCII.ALPHA)
: range('A', 'Z'); // Upper-case alphabetic
case "XDigit" -> ctype(ASCII.XDIGIT); // hexadecimal digits
// Java character properties, defined by methods in Character.java
case "javaLowerCase" -> caseIns ? c -> Character.isLowerCase(c) ||
Character.isUpperCase(c) ||
Character.isTitleCase(c)
: Character::isLowerCase;
case "javaUpperCase" -> caseIns ? c -> Character.isUpperCase(c) ||
Character.isLowerCase(c) ||
Character.isTitleCase(c)
: Character::isUpperCase;
case "javaAlphabetic" -> Character::isAlphabetic;
case "javaIdeographic" -> Character::isIdeographic;
case "javaTitleCase" -> caseIns ? c -> Character.isTitleCase(c) ||
Character.isLowerCase(c) ||
Character.isUpperCase(c)
: Character::isTitleCase;
case "javaDigit" -> Character::isDigit;
case "javaDefined" -> Character::isDefined;
case "javaLetter" -> Character::isLetter;
case "javaLetterOrDigit" -> Character::isLetterOrDigit;
case "javaJavaIdentifierStart" -> Character::isJavaIdentifierStart;
case "javaJavaIdentifierPart" -> Character::isJavaIdentifierPart;
case "javaUnicodeIdentifierStart" -> Character::isUnicodeIdentifierStart;
case "javaUnicodeIdentifierPart" -> Character::isUnicodeIdentifierPart;
case "javaIdentifierIgnorable" -> Character::isIdentifierIgnorable;
case "javaSpaceChar" -> Character::isSpaceChar;
case "javaWhitespace" -> Character::isWhitespace;
case "javaISOControl" -> Character::isISOControl;
case "javaMirrored" -> Character::isMirrored;
default -> 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);
}
}
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