filter_base.h

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/****************************************************************************
 *
 * fkie_message_filters
 * Copyright © 2018-2020 Fraunhofer FKIE
 * Author: Timo Röhling
 *
 * 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.
 *
 ****************************************************************************/

#ifndef INCLUDE_FKIE_MESSAGE_FILTERS_FILTER_BASE_H_
#define INCLUDE_FKIE_MESSAGE_FILTERS_FILTER_BASE_H_

#include "types.h"
#include <boost/noncopyable.hpp>
#include <functional>

namespace fkie_message_filters
{
namespace helpers
{
template<class... Types>
struct FilterCB
{
    using Type = std::function<void(const Types&...)>;
};

template<class... Types>
struct FilterCB<IO<Types...>>
{
    using Type = std::function<void(const Types&...)>;
};

} // namespace helpers

template<class... Types>
using FilterCB = typename helpers::FilterCB<Types...>::Type;

class FilterBase : public boost::noncopyable
{
public:
    virtual ~FilterBase() {}
    virtual void disconnect() noexcept = 0;
    virtual void reset() noexcept {};
};

} // namespace fkie_message_filters

#endif /* INCLUDE_FKIE_MESSAGE_FILTERS_FILTER_BASE_H_ */