/*

 * Copyright (c) 2000, 2021, Oracle and/or its affiliates. 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.  Oracle designates this

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

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package java.lang;

import jdk.internal.vm.annotation.IntrinsicCandidate;

/**

 * Utility class for string encoding and decoding.

 */

class StringCoding {

    private StringCoding() { }

    @IntrinsicCandidate

    public static boolean hasNegatives(byte[] ba, int off, int len) {

        for (int i = off; i < off + len; i++) {

            if (ba[i] < 0) {

                return true;

            }

        }

        return false;

    }

    @IntrinsicCandidate

    public static int implEncodeISOArray(byte[] sa, int sp,

                                          byte[] da, int dp, int len) {

        int i = 0;

        for (; i < len; i++) {

            char c = StringUTF16.getChar(sa, sp++);

            if (c > '\u00FF')

                break;

            da[dp++] = (byte)c;

        }

        return i;

    }

}