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 }