static_multicommand_parallel.h

//  (C) Copyright 2009-2011 Vit Kasal
//
//  Distributed under the Boost Software License, Version 1.0.
//  (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#pragma once
#include "static_command.h"
namespace si
{
	template<typename commands, bool no_commands = boost::mpl::empty<commands>::value>class static_multicommand_parallel_base
			: public boost::mpl::front<commands>::type
			, public static_multicommand_parallel_base<typename boost::mpl::pop_front<commands>::type>
	{
	public:
		typedef boost::mpl::front<commands>::type prefered_command_base;
		typedef public static_multicommand_parallel_base<typename boost::mpl::pop_front<commands>::type> alternate_commands;

		inline static void write(command_interface::writer_type writer, protocols::id<>::value_type protocol)
		{
			return prefered_command_base::allowed_for_protocol(protocol)? prfered_command::write(writer, protocol): alternate_commands::write(writer, protocol);
		}
		inline static std::size_t size(protocols::id<>::value_type protocol)
		{
			return prefered_command_base::allowed_for_protocol(protocol)? prfered_command::size(protocol): alternate_commands::write(protocol);
		}
		inline static bool allowed_for_protocol(protocols::id<>::value_type protocol)
		{
			return prefered_command_base::allowed_for_protocol(protocol)? true: alternate_commands::allowed_for_protocol(protocol);
		}
	};
	template<typename commands>class static_multicommand_parallel_base<commands, true>
	{
		inline static void write(command_interface::writer_type writer, protocols::id<>::value_type protocol)
		{
			throw std::invalid_argument("si::command::write::incorrect_protocol");
		}
		inline static std::size_t size(protocols::id<>::value_type protocol)
		{
			throw std::invalid_argument("si::command::size::incorrect_protocol");
		}
		inline static bool allowed_for_protocol(protocols::id<>::value_type protocol)
		{
			return false;
		}
	}

}//namespace si