all_integral.hpp

//  Copyright (c) 2012-2014 Christopher Hinz
//
//  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)

#ifndef ECHELON_DETAIL_ALL_INTEGRAL_HPP
#define ECHELON_DETAIL_ALL_INTEGRAL_HPP

#include <type_traits>

namespace echelon
{
namespace detail
{

template <typename... T>
struct and_;

template <typename Front>
struct and_<Front> : std::integral_constant<bool, Front::value>
{
};

template <typename Front, typename... Tail>
struct and_<Front, Tail...> : std::integral_constant<bool, Front::value&& and_<Tail...>::value>
{
};

template <typename... T>
struct all_integral : and_<std::is_integral<typename std::remove_reference<T>::type>...>
{
};
}
}

#endif