/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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 org.apache.mina.filter.codec.statemachine;
import org.apache.mina.common.IoBuffer;
import org.apache.mina.filter.codec.ProtocolDecoderException;
import org.apache.mina.filter.codec.ProtocolDecoderOutput;
/**
* @author The Apache MINA Project (dev@mina.apache.org)
* @version $Rev: 601994 $, $Date: 2007-12-07 13:58:00 +0900 (금, 07 12월 2007) $
*/
public abstract class SingleByteDecodingState implements DecodingState {
public SingleByteDecodingState() {
}
public DecodingState decode(IoBuffer in, ProtocolDecoderOutput out)
throws Exception {
if (in.hasRemaining()) {
return finishDecode(in.get(), out);
} else {
return this;
}
}
public DecodingState finishDecode(ProtocolDecoderOutput out)
throws Exception {
throw new ProtocolDecoderException(
"Unexpected end of session while waiting for a single byte.");
}
protected abstract DecodingState finishDecode(byte b,
ProtocolDecoderOutput out) throws Exception;
}