io.datty.msgpack.core.MapMessageWriter.java Source code

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Here is the source code for io.datty.msgpack.core.MapMessageWriter.java

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/*
 * Copyright (C) 2016 Datty.io Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package io.datty.msgpack.core;

import io.datty.msgpack.MessageWriter;
import io.netty.buffer.ByteBuf;

/**
 * MapMessageWriter
 * 
 * @author Alex Shvid
 *
 */

public class MapMessageWriter extends ValueMessageWriter implements MessageWriter {

    public static final MapMessageWriter INSTANCE = new MapMessageWriter();

    @Override
    public int skipHeader(int maxSize, ByteBuf sink) {
        int headerIndex = sink.writerIndex();
        int headerSize = getMapHeaderSize(maxSize);
        for (int i = 0; i != headerSize; ++i) {
            sink.writeByte(0);
        }
        return headerIndex;
    }

    @Override
    public void writeHeader(int mapSize, int maxSize, int headerIndex, ByteBuf sink) {
        int checkpoint = sink.writerIndex();
        sink.writerIndex(headerIndex);
        writeMapHeader(mapSize, maxSize, sink);
        sink.writerIndex(checkpoint);
    }

    @Override
    public void writeHeader(int size, ByteBuf sink) {
        writeMapHeader(size, sink);
    }

    @Override
    public void writeKey(String key, ByteBuf sink) {
        writeString(key, sink);
    }

    @Override
    public void writeKey(int key, ByteBuf sink) {
        writeVInt(key, sink);
    }

}