/*

 * Copyright 2006 Sun Microsystems, Inc.  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.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package java.lang;

abstract class CharacterData {

    abstract int getProperties(int ch);

    abstract int getType(int ch);

    abstract boolean isWhitespace(int ch);

    abstract boolean isMirrored(int ch);

    abstract boolean isJavaIdentifierStart(int ch);

    abstract boolean isJavaIdentifierPart(int ch);

    abstract boolean isUnicodeIdentifierStart(int ch);

    abstract boolean isUnicodeIdentifierPart(int ch);

    abstract boolean isIdentifierIgnorable(int ch);

    abstract int toLowerCase(int ch);

    abstract int toUpperCase(int ch);

    abstract int toTitleCase(int ch);

    abstract int digit(int ch, int radix);

    abstract int getNumericValue(int ch);

    abstract byte getDirectionality(int ch);

    //need to implement for JSR204

    int toUpperCaseEx(int ch) {

        return toUpperCase(ch);

    }

    char[] toUpperCaseCharArray(int ch) {

        return null;

    }

    // Character <= 0xff (basic latin) is handled by internal fast-path

    // to avoid initializing large tables.

    // Note: performance of this "fast-path" code may be sub-optimal

    // in negative cases for some accessors due to complicated ranges.

    // Should revisit after optimization of table initialization.

    static final CharacterData of(int ch) {

        if (ch >>> 8 == 0) {     // fast-path

            return CharacterDataLatin1.instance;

        } else {

            switch(ch >>> 16) {  //plane 00-16

            case(0):

                return CharacterData00.instance;

            case(1):

                return CharacterData01.instance;

            case(2):

                return CharacterData02.instance;

            case(14):

                return CharacterData0E.instance;

            case(15):   // Private Use

            case(16):   // Private Use

                return CharacterDataPrivateUse.instance;

            default:

                return CharacterDataUndefined.instance;

            }

        }

    }

}