mirror of git://gcc.gnu.org/git/gcc.git
526 lines
21 KiB
Java
526 lines
21 KiB
Java
// Character.java - Character class.
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/* Copyright (C) 1998, 1999, 2000 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package java.lang;
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import java.io.Serializable;
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/**
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* @author Tom Tromey <tromey@cygnus.com>
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* @date September 10, 1998
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*/
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/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
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* "The Java Language Specification", ISBN 0-201-63451-1,
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* online API docs for JDK 1.2 beta from http://www.javasoft.com,
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* and The Unicode Standard Version 2.0.
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* Status: Believed complete and correct for JDK 1.1; 1.2 methods
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* unimplemented.
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*/
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public final class Character implements Serializable, Comparable
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{
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public static final char MIN_VALUE = '\u0000';
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public static final char MAX_VALUE = '\uffff';
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public static final int MIN_RADIX = 2;
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public static final int MAX_RADIX = 36;
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// This initialization is seemingly circular, but it is accepted
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// by javac, and is handled specially by gcc.
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public static final Class TYPE = char.class;
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// Space.
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public static final byte SPACE_SEPARATOR = 12;
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public static final byte LINE_SEPARATOR = 13;
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public static final byte PARAGRAPH_SEPARATOR = 14;
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// Letters.
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public static final byte UPPERCASE_LETTER = 1;
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public static final byte LOWERCASE_LETTER = 2;
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public static final byte TITLECASE_LETTER = 3;
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public static final byte MODIFIER_LETTER = 4;
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public static final byte OTHER_LETTER = 5;
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// Numbers.
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public static final byte DECIMAL_DIGIT_NUMBER = 9;
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public static final byte LETTER_NUMBER = 10;
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public static final byte OTHER_NUMBER = 11;
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// Marks.
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public static final byte NON_SPACING_MARK = 6;
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public static final byte ENCLOSING_MARK = 7;
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public static final byte COMBINING_SPACING_MARK = 8;
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// Punctuation.
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public static final byte DASH_PUNCTUATION = 20;
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public static final byte START_PUNCTUATION = 21;
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public static final byte END_PUNCTUATION = 22;
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public static final byte CONNECTOR_PUNCTUATION = 23;
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public static final byte OTHER_PUNCTUATION = 24;
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// Symbols.
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public static final byte MATH_SYMBOL = 25;
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public static final byte CURRENCY_SYMBOL = 26;
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public static final byte MODIFIER_SYMBOL = 27;
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public static final byte OTHER_SYMBOL = 28;
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// Format controls.
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public static final byte CONTROL = 15;
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// Note: The JCL book says that both FORMAT and PRIVATE_USE are 18.
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// However, FORMAT is actually 16.
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public static final byte FORMAT = 16;
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// Others.
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public static final byte UNASSIGNED = 0;
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public static final byte PRIVATE_USE = 18;
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public static final byte SURROGATE = 19;
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private static final long serialVersionUID = 3786198910865385080L;
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public Character (char ch)
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{
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value = ch;
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}
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public char charValue ()
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{
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return value;
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}
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// See if a character is a digit. If so, return the corresponding
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// value. Otherwise return -1.
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private static native int digit_value (char ch);
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public static int digit (char ch, int radix)
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{
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if (radix < MIN_RADIX || radix > MAX_RADIX)
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return -1;
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int d = digit_value (ch);
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if (d == -1)
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{
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if (ch >= 'A' && ch <= 'Z')
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d = ch - 'A' + 10;
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else if (ch >= 'a' && ch <= 'z')
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d = ch - 'a' + 10;
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else
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return -1;
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}
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return d >= radix ? -1 : d;
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}
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public boolean equals (Object obj)
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{
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// Don't need to compare OBJ to null as instanceof will do this.
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if (obj instanceof Character)
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return value == ((Character) obj).value;
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return false;
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}
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public static char forDigit (int d, int rdx)
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{
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if (d < 0 || d >= rdx || rdx < MIN_RADIX || rdx > MAX_RADIX)
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return '\u0000';
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if (d < 10)
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return (char) ('0' + d);
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// The Java Language Spec says to use lowercase, while the JCL
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// says to use uppercase. We go with the former.
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return (char) ('a' + d - 10);
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}
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public static native int getNumericValue (char ch);
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public static native int getType (char ch);
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public int hashCode ()
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{
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return value;
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}
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public static boolean isDefined (char ch)
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{
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return getType (ch) != UNASSIGNED;
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}
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public static boolean isDigit (char ch)
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{
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return digit_value (ch) != -1;
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}
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// The JCL book says that the argument here is a Character. That is
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// wrong.
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public static boolean isIdentifierIgnorable (char ch)
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{
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// This information comes from the Unicode Standard. It isn't
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// auto-generated as it doesn't appear in the unidata table.
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return ((ch >= '\u0000' && ch <= '\u0008')
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|| (ch >= '\u000e' && ch <= '\u001b')
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// JDK 1.2 docs say that these are ignorable. The Unicode
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// Standard is somewhat ambiguous on this issue.
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|| (ch >= '\u007f' && ch <= '\u009f')
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|| (ch >= '\u200c' && ch <= '\u200f')
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// JCl says 200a through 200e, but that is a typo. The
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// Unicode standard says the bidi controls are 202a
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// through 202e.
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|| (ch >= '\u202a' && ch <= '\u202e')
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|| (ch >= '\u206a' && ch <= '\u206f')
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|| ch == '\ufeff');
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}
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public static boolean isISOControl (char c)
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{
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return ((c >= '\u0000' && c <= '\u001f')
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|| (c >= '\u007f' && c <= '\u009f'));
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}
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public static boolean isJavaIdentifierPart (char ch)
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{
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if (isIdentifierIgnorable (ch) || isDigit (ch))
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return true;
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int type = getType (ch);
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return (type == COMBINING_SPACING_MARK || type == NON_SPACING_MARK
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|| type == CURRENCY_SYMBOL || type == CONNECTOR_PUNCTUATION
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|| type == UPPERCASE_LETTER || type == LOWERCASE_LETTER
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|| type == TITLECASE_LETTER || type == MODIFIER_LETTER
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|| type == OTHER_LETTER || type == LETTER_NUMBER);
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}
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public static boolean isJavaIdentifierStart (char ch)
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{
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int type = getType (ch);
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return (type == CURRENCY_SYMBOL || type == CONNECTOR_PUNCTUATION
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|| type == UPPERCASE_LETTER || type == LOWERCASE_LETTER
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|| type == TITLECASE_LETTER || type == MODIFIER_LETTER
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|| type == OTHER_LETTER);
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}
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// Deprecated in 1.2.
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public static boolean isJavaLetter (char ch)
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{
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return ch == '$' || ch == '_' || isLetter (ch);
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}
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// Deprecated in 1.2.
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public static boolean isJavaLetterOrDigit (char ch)
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{
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return ch == '$' || ch == '_' || isLetterOrDigit (ch);
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}
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public static boolean isLetter (char ch)
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{
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int type = getType (ch);
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return (type == UPPERCASE_LETTER || type == LOWERCASE_LETTER
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|| type == TITLECASE_LETTER || type == MODIFIER_LETTER
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|| type == OTHER_LETTER);
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}
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public static boolean isLetterOrDigit (char ch)
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{
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return isDigit (ch) || isLetter (ch);
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}
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public static native boolean isLowerCase (char ch);
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// Deprecated in JCL.
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public static boolean isSpace (char ch)
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{
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return ch == '\n' || ch == '\t' || ch == '\f' || ch == '\r' || ch == ' ';
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}
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public static native boolean isSpaceChar (char ch);
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public static native boolean isTitleCase (char ch);
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public static boolean isUnicodeIdentifierPart (char ch)
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{
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if (isIdentifierIgnorable (ch) || isDigit (ch))
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return true;
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int type = getType (ch);
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return (type == CONNECTOR_PUNCTUATION || type == LETTER_NUMBER
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|| type == COMBINING_SPACING_MARK || type == NON_SPACING_MARK
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|| type == UPPERCASE_LETTER || type == LOWERCASE_LETTER
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|| type == TITLECASE_LETTER || type == MODIFIER_LETTER
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|| type == OTHER_LETTER);
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}
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public static boolean isUnicodeIdentifierStart (char ch)
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{
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return isLetter (ch);
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}
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public static native boolean isUpperCase (char ch);
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public static boolean isWhitespace (char ch)
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{
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return ((ch >= '\u0009' && ch <= '\r')
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|| (ch >= '\u001c' && ch <= '\u001f')
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|| (ch != '\u00a0' && ch != '\ufeff' && isSpaceChar (ch)));
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}
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public static native char toLowerCase (char ch);
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public static native char toTitleCase (char ch);
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public static native char toUpperCase (char ch);
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public String toString ()
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{
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return String.valueOf(value);
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}
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public int compareTo (Character anotherCharacter)
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{
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return value - anotherCharacter.value;
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}
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public int compareTo (Object o)
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{
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return compareTo ((Character) o);
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}
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// Private data.
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private char value;
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public static class Subset
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{
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protected Subset (String name)
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{
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this.name = name;
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}
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public final boolean equals (Object obj)
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{
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return obj == this;
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}
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public final int hashCode ()
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{
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return super.hashCode ();
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}
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public final String toString ()
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{
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return name;
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}
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// Name of this subset.
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private String name;
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}
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public static final class UnicodeBlock extends Subset
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{
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private UnicodeBlock (String name, char start, char end)
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{
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super (name);
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this.start = start;
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this.end = end;
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}
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public static UnicodeBlock of (char c)
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{
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// A special case we need.
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if (c == '\uFEFF')
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return SPECIALS;
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// Do a binary search to find the correct subset.
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int hi = blocks.length;
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int lo = 0;
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while (hi > lo)
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{
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int mid = (hi + lo) / 2;
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UnicodeBlock ub = blocks[mid];
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if (c < ub.start)
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hi = mid;
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else if (c > ub.end)
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lo = mid;
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else
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return ub;
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}
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return null;
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}
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// Start and end characters.
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private char start, end;
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// Everything from here to the end of UnicodeBlock is
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// automatically generated by the blocks.pl script.
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public static final UnicodeBlock BASIC_LATIN = new UnicodeBlock ("Basic Latin", '\u0000', '\u007F');
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public static final UnicodeBlock LATIN_1_SUPPLEMENT = new UnicodeBlock ("Latin-1 Supplement", '\u0080', '\u00FF');
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public static final UnicodeBlock LATIN_EXTENDED_A = new UnicodeBlock ("Latin Extended-A", '\u0100', '\u017F');
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public static final UnicodeBlock LATIN_EXTENDED_B = new UnicodeBlock ("Latin Extended-B", '\u0180', '\u024F');
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public static final UnicodeBlock IPA_EXTENSIONS = new UnicodeBlock ("IPA Extensions", '\u0250', '\u02AF');
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public static final UnicodeBlock SPACING_MODIFIER_LETTERS = new UnicodeBlock ("Spacing Modifier Letters", '\u02B0', '\u02FF');
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public static final UnicodeBlock COMBINING_DIACRITICAL_MARKS = new UnicodeBlock ("Combining Diacritical Marks", '\u0300', '\u036F');
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public static final UnicodeBlock GREEK = new UnicodeBlock ("Greek", '\u0370', '\u03FF');
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public static final UnicodeBlock CYRILLIC = new UnicodeBlock ("Cyrillic", '\u0400', '\u04FF');
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public static final UnicodeBlock ARMENIAN = new UnicodeBlock ("Armenian", '\u0530', '\u058F');
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public static final UnicodeBlock HEBREW = new UnicodeBlock ("Hebrew", '\u0590', '\u05FF');
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public static final UnicodeBlock ARABIC = new UnicodeBlock ("Arabic", '\u0600', '\u06FF');
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public static final UnicodeBlock SYRIAC__ = new UnicodeBlock ("Syriac ", '\u0700', '\u074F');
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public static final UnicodeBlock THAANA = new UnicodeBlock ("Thaana", '\u0780', '\u07BF');
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public static final UnicodeBlock DEVANAGARI = new UnicodeBlock ("Devanagari", '\u0900', '\u097F');
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public static final UnicodeBlock BENGALI = new UnicodeBlock ("Bengali", '\u0980', '\u09FF');
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public static final UnicodeBlock GURMUKHI = new UnicodeBlock ("Gurmukhi", '\u0A00', '\u0A7F');
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public static final UnicodeBlock GUJARATI = new UnicodeBlock ("Gujarati", '\u0A80', '\u0AFF');
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public static final UnicodeBlock ORIYA = new UnicodeBlock ("Oriya", '\u0B00', '\u0B7F');
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public static final UnicodeBlock TAMIL = new UnicodeBlock ("Tamil", '\u0B80', '\u0BFF');
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public static final UnicodeBlock TELUGU = new UnicodeBlock ("Telugu", '\u0C00', '\u0C7F');
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public static final UnicodeBlock KANNADA = new UnicodeBlock ("Kannada", '\u0C80', '\u0CFF');
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public static final UnicodeBlock MALAYALAM = new UnicodeBlock ("Malayalam", '\u0D00', '\u0D7F');
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public static final UnicodeBlock SINHALA = new UnicodeBlock ("Sinhala", '\u0D80', '\u0DFF');
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public static final UnicodeBlock THAI = new UnicodeBlock ("Thai", '\u0E00', '\u0E7F');
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public static final UnicodeBlock LAO = new UnicodeBlock ("Lao", '\u0E80', '\u0EFF');
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public static final UnicodeBlock TIBETAN = new UnicodeBlock ("Tibetan", '\u0F00', '\u0FFF');
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public static final UnicodeBlock MYANMAR_ = new UnicodeBlock ("Myanmar ", '\u1000', '\u109F');
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public static final UnicodeBlock GEORGIAN = new UnicodeBlock ("Georgian", '\u10A0', '\u10FF');
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public static final UnicodeBlock HANGUL_JAMO = new UnicodeBlock ("Hangul Jamo", '\u1100', '\u11FF');
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public static final UnicodeBlock ETHIOPIC = new UnicodeBlock ("Ethiopic", '\u1200', '\u137F');
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public static final UnicodeBlock CHEROKEE = new UnicodeBlock ("Cherokee", '\u13A0', '\u13FF');
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public static final UnicodeBlock UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS = new UnicodeBlock ("Unified Canadian Aboriginal Syllabics", '\u1400', '\u167F');
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public static final UnicodeBlock OGHAM = new UnicodeBlock ("Ogham", '\u1680', '\u169F');
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public static final UnicodeBlock RUNIC = new UnicodeBlock ("Runic", '\u16A0', '\u16FF');
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public static final UnicodeBlock KHMER = new UnicodeBlock ("Khmer", '\u1780', '\u17FF');
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public static final UnicodeBlock MONGOLIAN = new UnicodeBlock ("Mongolian", '\u1800', '\u18AF');
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public static final UnicodeBlock LATIN_EXTENDED_ADDITIONAL = new UnicodeBlock ("Latin Extended Additional", '\u1E00', '\u1EFF');
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public static final UnicodeBlock GREEK_EXTENDED = new UnicodeBlock ("Greek Extended", '\u1F00', '\u1FFF');
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public static final UnicodeBlock GENERAL_PUNCTUATION = new UnicodeBlock ("General Punctuation", '\u2000', '\u206F');
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public static final UnicodeBlock SUPERSCRIPTS_AND_SUBSCRIPTS = new UnicodeBlock ("Superscripts and Subscripts", '\u2070', '\u209F');
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public static final UnicodeBlock CURRENCY_SYMBOLS = new UnicodeBlock ("Currency Symbols", '\u20A0', '\u20CF');
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public static final UnicodeBlock COMBINING_MARKS_FOR_SYMBOLS = new UnicodeBlock ("Combining Marks for Symbols", '\u20D0', '\u20FF');
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public static final UnicodeBlock LETTERLIKE_SYMBOLS = new UnicodeBlock ("Letterlike Symbols", '\u2100', '\u214F');
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public static final UnicodeBlock NUMBER_FORMS = new UnicodeBlock ("Number Forms", '\u2150', '\u218F');
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public static final UnicodeBlock ARROWS = new UnicodeBlock ("Arrows", '\u2190', '\u21FF');
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public static final UnicodeBlock MATHEMATICAL_OPERATORS = new UnicodeBlock ("Mathematical Operators", '\u2200', '\u22FF');
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public static final UnicodeBlock MISCELLANEOUS_TECHNICAL = new UnicodeBlock ("Miscellaneous Technical", '\u2300', '\u23FF');
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public static final UnicodeBlock CONTROL_PICTURES = new UnicodeBlock ("Control Pictures", '\u2400', '\u243F');
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public static final UnicodeBlock OPTICAL_CHARACTER_RECOGNITION = new UnicodeBlock ("Optical Character Recognition", '\u2440', '\u245F');
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public static final UnicodeBlock ENCLOSED_ALPHANUMERICS = new UnicodeBlock ("Enclosed Alphanumerics", '\u2460', '\u24FF');
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public static final UnicodeBlock BOX_DRAWING = new UnicodeBlock ("Box Drawing", '\u2500', '\u257F');
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public static final UnicodeBlock BLOCK_ELEMENTS = new UnicodeBlock ("Block Elements", '\u2580', '\u259F');
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public static final UnicodeBlock GEOMETRIC_SHAPES = new UnicodeBlock ("Geometric Shapes", '\u25A0', '\u25FF');
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public static final UnicodeBlock MISCELLANEOUS_SYMBOLS = new UnicodeBlock ("Miscellaneous Symbols", '\u2600', '\u26FF');
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public static final UnicodeBlock DINGBATS = new UnicodeBlock ("Dingbats", '\u2700', '\u27BF');
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public static final UnicodeBlock BRAILLE_PATTERNS = new UnicodeBlock ("Braille Patterns", '\u2800', '\u28FF');
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public static final UnicodeBlock CJK_RADICALS_SUPPLEMENT = new UnicodeBlock ("CJK Radicals Supplement", '\u2E80', '\u2EFF');
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public static final UnicodeBlock KANGXI_RADICALS = new UnicodeBlock ("Kangxi Radicals", '\u2F00', '\u2FDF');
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public static final UnicodeBlock IDEOGRAPHIC_DESCRIPTION_CHARACTERS = new UnicodeBlock ("Ideographic Description Characters", '\u2FF0', '\u2FFF');
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public static final UnicodeBlock CJK_SYMBOLS_AND_PUNCTUATION = new UnicodeBlock ("CJK Symbols and Punctuation", '\u3000', '\u303F');
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public static final UnicodeBlock HIRAGANA = new UnicodeBlock ("Hiragana", '\u3040', '\u309F');
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public static final UnicodeBlock KATAKANA = new UnicodeBlock ("Katakana", '\u30A0', '\u30FF');
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public static final UnicodeBlock BOPOMOFO = new UnicodeBlock ("Bopomofo", '\u3100', '\u312F');
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public static final UnicodeBlock HANGUL_COMPATIBILITY_JAMO = new UnicodeBlock ("Hangul Compatibility Jamo", '\u3130', '\u318F');
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public static final UnicodeBlock KANBUN = new UnicodeBlock ("Kanbun", '\u3190', '\u319F');
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public static final UnicodeBlock BOPOMOFO_EXTENDED = new UnicodeBlock ("Bopomofo Extended", '\u31A0', '\u31BF');
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public static final UnicodeBlock ENCLOSED_CJK_LETTERS_AND_MONTHS = new UnicodeBlock ("Enclosed CJK Letters and Months", '\u3200', '\u32FF');
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public static final UnicodeBlock CJK_COMPATIBILITY = new UnicodeBlock ("CJK Compatibility", '\u3300', '\u33FF');
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public static final UnicodeBlock CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A = new UnicodeBlock ("CJK Unified Ideographs Extension A", '\u3400', '\u4DB5');
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public static final UnicodeBlock CJK_UNIFIED_IDEOGRAPHS = new UnicodeBlock ("CJK Unified Ideographs", '\u4E00', '\u9FFF');
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public static final UnicodeBlock YI_SYLLABLES = new UnicodeBlock ("Yi Syllables", '\uA000', '\uA48F');
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public static final UnicodeBlock YI_RADICALS = new UnicodeBlock ("Yi Radicals", '\uA490', '\uA4CF');
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public static final UnicodeBlock HANGUL_SYLLABLES = new UnicodeBlock ("Hangul Syllables", '\uAC00', '\uD7A3');
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public static final UnicodeBlock SURROGATES_AREA = new UnicodeBlock ("Surrogates Area", '\uD800', '\uDFFF');
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public static final UnicodeBlock PRIVATE_USE_AREA = new UnicodeBlock ("Private Use Area", '\uE000', '\uF8FF');
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public static final UnicodeBlock CJK_COMPATIBILITY_IDEOGRAPHS = new UnicodeBlock ("CJK Compatibility Ideographs", '\uF900', '\uFAFF');
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public static final UnicodeBlock ALPHABETIC_PRESENTATION_FORMS = new UnicodeBlock ("Alphabetic Presentation Forms", '\uFB00', '\uFB4F');
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public static final UnicodeBlock ARABIC_PRESENTATION_FORMS_A = new UnicodeBlock ("Arabic Presentation Forms-A", '\uFB50', '\uFDFF');
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public static final UnicodeBlock COMBINING_HALF_MARKS = new UnicodeBlock ("Combining Half Marks", '\uFE20', '\uFE2F');
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public static final UnicodeBlock CJK_COMPATIBILITY_FORMS = new UnicodeBlock ("CJK Compatibility Forms", '\uFE30', '\uFE4F');
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public static final UnicodeBlock SMALL_FORM_VARIANTS = new UnicodeBlock ("Small Form Variants", '\uFE50', '\uFE6F');
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public static final UnicodeBlock ARABIC_PRESENTATION_FORMS_B = new UnicodeBlock ("Arabic Presentation Forms-B", '\uFE70', '\uFEFE');
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public static final UnicodeBlock HALFWIDTH_AND_FULLWIDTH_FORMS = new UnicodeBlock ("Halfwidth and Fullwidth Forms", '\uFF00', '\uFFEF');
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public static final UnicodeBlock SPECIALS = new UnicodeBlock ("Specials", '\uFFF0', '\uFFFD');
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private static final UnicodeBlock[] blocks = {
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BASIC_LATIN,
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LATIN_1_SUPPLEMENT,
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LATIN_EXTENDED_A,
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LATIN_EXTENDED_B,
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IPA_EXTENSIONS,
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SPACING_MODIFIER_LETTERS,
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COMBINING_DIACRITICAL_MARKS,
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GREEK,
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CYRILLIC,
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ARMENIAN,
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HEBREW,
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ARABIC,
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SYRIAC__,
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THAANA,
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DEVANAGARI,
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BENGALI,
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GURMUKHI,
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GUJARATI,
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ORIYA,
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TAMIL,
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TELUGU,
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KANNADA,
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MALAYALAM,
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SINHALA,
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THAI,
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LAO,
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TIBETAN,
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MYANMAR_,
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GEORGIAN,
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HANGUL_JAMO,
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ETHIOPIC,
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CHEROKEE,
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UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS,
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OGHAM,
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RUNIC,
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KHMER,
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MONGOLIAN,
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LATIN_EXTENDED_ADDITIONAL,
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GREEK_EXTENDED,
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GENERAL_PUNCTUATION,
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SUPERSCRIPTS_AND_SUBSCRIPTS,
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CURRENCY_SYMBOLS,
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COMBINING_MARKS_FOR_SYMBOLS,
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LETTERLIKE_SYMBOLS,
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NUMBER_FORMS,
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ARROWS,
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MATHEMATICAL_OPERATORS,
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MISCELLANEOUS_TECHNICAL,
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CONTROL_PICTURES,
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OPTICAL_CHARACTER_RECOGNITION,
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ENCLOSED_ALPHANUMERICS,
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BOX_DRAWING,
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BLOCK_ELEMENTS,
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GEOMETRIC_SHAPES,
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MISCELLANEOUS_SYMBOLS,
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DINGBATS,
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BRAILLE_PATTERNS,
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CJK_RADICALS_SUPPLEMENT,
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KANGXI_RADICALS,
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IDEOGRAPHIC_DESCRIPTION_CHARACTERS,
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CJK_SYMBOLS_AND_PUNCTUATION,
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HIRAGANA,
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KATAKANA,
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BOPOMOFO,
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HANGUL_COMPATIBILITY_JAMO,
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KANBUN,
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BOPOMOFO_EXTENDED,
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ENCLOSED_CJK_LETTERS_AND_MONTHS,
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CJK_COMPATIBILITY,
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CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A,
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CJK_UNIFIED_IDEOGRAPHS,
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YI_SYLLABLES,
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YI_RADICALS,
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HANGUL_SYLLABLES,
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SURROGATES_AREA,
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PRIVATE_USE_AREA,
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CJK_COMPATIBILITY_IDEOGRAPHS,
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ALPHABETIC_PRESENTATION_FORMS,
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ARABIC_PRESENTATION_FORMS_A,
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COMBINING_HALF_MARKS,
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CJK_COMPATIBILITY_FORMS,
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SMALL_FORM_VARIANTS,
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ARABIC_PRESENTATION_FORMS_B,
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HALFWIDTH_AND_FULLWIDTH_FORMS,
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SPECIALS
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};
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}
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}
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