/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

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 * 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

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 *

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 * 2 along with this work; if not, write to the Free Software Foundation,

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/*

 * Copyright (C) 2004-2011

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

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 * THE SOFTWARE.

 */

package com.sun.xml.internal.rngom.util;

public abstract class Utf16 {

  // 110110XX XXXXXX 110111XX XXXXXX

  static public boolean isSurrogate(char c) {

    return (c & 0xF800) == 0xD800;

  }

  static public boolean isSurrogate1(char c) {

    return (c & 0xFC00) == 0xD800;

  }

  static public boolean isSurrogate2(char c) {

    return (c & 0xFC00) == 0xDC00;

  }

  static public int scalarValue(char c1, char c2) {

    return (((c1 & 0x3FF) << 10) | (c2 & 0x3FF)) + 0x10000;

  }

  static public char surrogate1(int c) {

    return (char)(((c - 0x10000) >> 10) | 0xD800);

  }

  static public char surrogate2(int c) {

    return (char)(((c - 0x10000) & 0x3FF) | 0xDC00);

  }

}