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/*
 * Copyright 2017 The Netty Project
 *
 * The Netty Project licenses this file to you 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.netty.handler.codec.http2;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.DefaultByteBufHolder;
import io.netty.buffer.Unpooled;
import io.netty.util.internal.StringUtil;
import io.netty.util.internal.UnstableApi;

@UnstableApi
public final class DefaultHttp2UnknownFrame extends DefaultByteBufHolder implements Http2UnknownFrame {
    private final byte frameType;
    private final Http2Flags flags;
    private Http2FrameStream stream;

    public DefaultHttp2UnknownFrame(byte frameType, Http2Flags flags) {
        this(frameType, flags, Unpooled.EMPTY_BUFFER);
    }

    public DefaultHttp2UnknownFrame(byte frameType, Http2Flags flags, ByteBuf data) {
        super(data);
        this.frameType = frameType;
        this.flags = flags;
    }

    @Override
    public Http2FrameStream stream() {
        return stream;
    }

    @Override
    public DefaultHttp2UnknownFrame stream(Http2FrameStream stream) {
        this.stream = stream;
        return this;
    }

    @Override
    public byte frameType() {
        return frameType;
    }

    @Override
    public Http2Flags flags() {
        return flags;
    }

    @Override
    public String name() {
        return "UNKNOWN";
    }

    @Override
    public DefaultHttp2UnknownFrame copy() {
        return replace(content().copy());
    }

    @Override
    public DefaultHttp2UnknownFrame duplicate() {
        return replace(content().duplicate());
    }

    @Override
    public DefaultHttp2UnknownFrame retainedDuplicate() {
        return replace(content().retainedDuplicate());
    }

    @Override
    public DefaultHttp2UnknownFrame replace(ByteBuf content) {
        return new DefaultHttp2UnknownFrame(frameType, flags, content).stream(stream);
    }

    @Override
    public DefaultHttp2UnknownFrame retain() {
        super.retain();
        return this;
    }

    @Override
    public DefaultHttp2UnknownFrame retain(int increment) {
        super.retain(increment);
        return this;
    }

    @Override
    public String toString() {
        return StringUtil.simpleClassName(this) + "(frameType=" + frameType + ", stream=" + stream +
               ", flags=" + flags + ", content=" + contentToString() + ')';
    }

    @Override
    public DefaultHttp2UnknownFrame touch() {
        super.touch();
        return this;
    }

    @Override
    public DefaultHttp2UnknownFrame touch(Object hint) {
        super.touch(hint);
        return this;
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof DefaultHttp2UnknownFrame)) {
            return false;
        }
        DefaultHttp2UnknownFrame other = (DefaultHttp2UnknownFrame) o;
        Http2FrameStream otherStream = other.stream();
        return (stream == otherStream || otherStream != null && otherStream.equals(stream))
               && flags.equals(other.flags())
               && frameType == other.frameType()
               && super.equals(other);
    }

    @Override
    public int hashCode() {
        int hash = super.hashCode();
        hash = hash * 31 + frameType;
        hash = hash * 31 + flags.hashCode();
        if (stream != null) {
            hash = hash * 31 + stream.hashCode();
        }

        return hash;
    }
}