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/*
* Copyright 2014 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.channel;

final class DefaultChannelHandlerContext extends AbstractChannelHandlerContext {
    private final ChannelHandler handler;

    DefaultChannelHandlerContext(
            DefaultChannelPipeline pipeline, ChannelHandlerInvoker invoker, String name, ChannelHandler handler) {
        super(pipeline, invoker, name, skipFlags(checkNull(handler)));
        this.handler = handler;
    }

    private static ChannelHandler checkNull(ChannelHandler handler) {
        if (handler == null) {
            throw new NullPointerException("handler");
        }
        return handler;
    }

    @Override
    public ChannelHandler handler() {
        return handler;
    }
}