/*

 * Copyright (c) 2015, 2018, 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.

 */

import java.nio.ByteBuffer;

final class SizeUpdateWriter implements BinaryRepresentationWriter {

    private final IntegerWriter intWriter = new IntegerWriter();

    private int maxSize;

    private boolean tableUpdated;

    SizeUpdateWriter() { }

    SizeUpdateWriter maxHeaderTableSize(int size) {

        intWriter.configure(size, 5, 0b0010_0000);

        this.maxSize = size;

        return this;

    }

    @Override

    public boolean write(HeaderTable table, ByteBuffer destination) {

        if (!tableUpdated) {

            table.setMaxSize(maxSize);

            tableUpdated = true;

        }

        return intWriter.write(destination);

    }

    @Override

    public BinaryRepresentationWriter reset() {

        intWriter.reset();

        maxSize = -1;

        tableUpdated = false;

        return this;

    }

}