1 /*
2  * Copyright (c) 2006, 2011, Oracle and/or its affiliates. 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.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package java.lang;
27 
28 abstract class CharacterData {
getProperties(int ch)29     abstract int getProperties(int ch);
getType(int ch)30     abstract int getType(int ch);
isWhitespace(int ch)31     abstract boolean isWhitespace(int ch);
isMirrored(int ch)32     abstract boolean isMirrored(int ch);
isJavaIdentifierStart(int ch)33     abstract boolean isJavaIdentifierStart(int ch);
isJavaIdentifierPart(int ch)34     abstract boolean isJavaIdentifierPart(int ch);
isUnicodeIdentifierStart(int ch)35     abstract boolean isUnicodeIdentifierStart(int ch);
isUnicodeIdentifierPart(int ch)36     abstract boolean isUnicodeIdentifierPart(int ch);
isIdentifierIgnorable(int ch)37     abstract boolean isIdentifierIgnorable(int ch);
toLowerCase(int ch)38     abstract int toLowerCase(int ch);
toUpperCase(int ch)39     abstract int toUpperCase(int ch);
toTitleCase(int ch)40     abstract int toTitleCase(int ch);
digit(int ch, int radix)41     abstract int digit(int ch, int radix);
getNumericValue(int ch)42     abstract int getNumericValue(int ch);
getDirectionality(int ch)43     abstract byte getDirectionality(int ch);
44 
45     //need to implement for JSR204
toUpperCaseEx(int ch)46     int toUpperCaseEx(int ch) {
47         return toUpperCase(ch);
48     }
49 
toUpperCaseCharArray(int ch)50     char[] toUpperCaseCharArray(int ch) {
51         return null;
52     }
53 
isOtherLowercase(int ch)54     boolean isOtherLowercase(int ch) {
55         return false;
56     }
57 
isOtherUppercase(int ch)58     boolean isOtherUppercase(int ch) {
59         return false;
60     }
61 
isOtherAlphabetic(int ch)62     boolean isOtherAlphabetic(int ch) {
63         return false;
64     }
65 
isIdeographic(int ch)66     boolean isIdeographic(int ch) {
67         return false;
68     }
69 
70     // Character <= 0xff (basic latin) is handled by internal fast-path
71     // to avoid initializing large tables.
72     // Note: performance of this "fast-path" code may be sub-optimal
73     // in negative cases for some accessors due to complicated ranges.
74     // Should revisit after optimization of table initialization.
75 
of(int ch)76     static final CharacterData of(int ch) {
77         if (ch >>> 8 == 0) {     // fast-path
78             return CharacterDataLatin1.instance;
79         } else {
80             switch(ch >>> 16) {  //plane 00-16
81             case(0):
82                 return CharacterData00.instance;
83             case(1):
84                 return CharacterData01.instance;
85             case(2):
86                 return CharacterData02.instance;
87             case(14):
88                 return CharacterData0E.instance;
89             case(15):   // Private Use
90             case(16):   // Private Use
91                 return CharacterDataPrivateUse.instance;
92             default:
93                 return CharacterDataUndefined.instance;
94             }
95         }
96     }
97 }
98