callbacks_traits.hpp

/* This software is distributed under BSD 3-clause license (see LICENSE file).
 *
 * Copyright (c) 2012-2013 Sergey Lisitsyn
 */

#ifndef TAPKEE_CALLBACK_TRAITS_H_
#define TAPKEE_CALLBACK_TRAITS_H_

namespace tapkee
{

	template <class Callback>
	struct BatchCallbackTraits
	{
		static const bool supports_batch;
	};
	#define TAPKEE_CALLBACK_SUPPORTS_BATCH(X)								\
	template<> const bool BatchCallbackTraits<X>::supports_batch = true;	\

	template <class T>
	class is_dummy
	{
		typedef char yes;
		typedef long no;

		template <typename C> static yes dummy(typename C::dummy*);
		template <typename C> static no dummy(...);

		public:
		static const bool value = (sizeof(dummy<T>(0)) == sizeof(yes));
	};

}

#endif