1 /*
2 * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package java.lang;
27
28 abstract class CharacterData {
29 abstract int getProperties(int ch);
30 abstract int getType(int ch);
31 abstract boolean isWhitespace(int ch);
32 abstract boolean isMirrored(int ch);
33 abstract boolean isJavaIdentifierStart(int ch);
34 abstract boolean isJavaIdentifierPart(int ch);
35 abstract boolean isUnicodeIdentifierStart(int ch);
36 abstract boolean isUnicodeIdentifierPart(int ch);
37 abstract boolean isIdentifierIgnorable(int ch);
38 abstract int toLowerCase(int ch);
39 abstract int toUpperCase(int ch);
40 abstract int toTitleCase(int ch);
41 abstract int digit(int ch, int radix);
42 abstract int getNumericValue(int ch);
43 abstract byte getDirectionality(int ch);
44
45 //need to implement for JSR204
46 int toUpperCaseEx(int ch) {
47 return toUpperCase(ch);
48 }
49 char[] toUpperCaseCharArray(int ch) {
50 return null;
51 }
52
53 // Character <= 0xff (basic latin) is handled by internal fast-path
54 // to avoid initializing large tables.
55 // Note: performance of this "fast-path" code may be sub-optimal
56 // in negative cases for some accessors due to complicated ranges.
57 // Should revisit after optimization of table initialization.
58
59 static final CharacterData of(int ch) {
60 if (ch >>> 8 == 0) { // fast-path
61 return CharacterDataLatin1.instance;
62 } else {
63 switch(ch >>> 16) { //plane 00-16
64 case(0):
65 return CharacterData00.instance;
66 case(1):
67 return CharacterData01.instance;
68 case(2):
69 return CharacterData02.instance;
70 case(14):
71 return CharacterData0E.instance;
72 case(15): // Private Use
73 case(16): // Private Use
74 return CharacterDataPrivateUse.instance;
75 default:
76 return CharacterDataUndefined.instance;
77 }
78 }
79 }
80 }
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