ContextHolder.h

/*
 * Copyright 2008 Timo Puronen
 *
 * 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 CONTEXTCREATOR_H_
#define CONTEXTCREATOR_H_

template<typename Context>
class ContextHolder {
public:
	/**
	 * Get current context.
	 */
	virtual Context& context() = 0;
};

template<>
class ContextHolder<void> {
public:
    virtual void context() {}
};

#endif /*CONTEXTCREATOR_H_*/