Sprout/sprout/weed/detail/is_different_elem.hpp

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2011-11-13 08:54:38 +00:00
#ifndef SPROUT_WEED_DETAIL_IS_DIFFERENT_ELEM_HPP
#define SPROUT_WEED_DETAIL_IS_DIFFERENT_ELEM_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/weed/traits/type/is_unused.hpp>
#include <sprout/weed/detail/is_same_container.hpp>
#include <sprout/weed/detail/is_container_and_elem.hpp>
#include <sprout/weed/detail/is_elem_and_container.hpp>
#include <sprout/weed/detail/is_both_tuple.hpp>
#include <sprout/weed/detail/is_tuple_and_elem.hpp>
#include <sprout/weed/detail/is_elem_and_tuple.hpp>
namespace sprout {
namespace weed {
namespace detail {
template<typename T, typename U, typename = void>
struct is_different_elem
: public std::false_type
{};
template<typename T, typename U>
struct is_different_elem<
T,
U,
typename std::enable_if<
!std::is_same<T, U>::value
&& !is_same_container<T, U>::value
&& !is_container_and_elem<T, U>::value
&& !is_elem_and_container<T, U>::value
&& !is_both_tuple<T, U>::value
&& !is_tuple_and_elem<T, U>::value
&& !is_elem_and_tuple<T, U>::value
&& !sprout::weed::traits::is_unused<T>::value
&& !sprout::weed::traits::is_unused<U>::value
>::type
>
: public std::true_type
{};
} // namespace detail
} // namespace weed
} // namespace sprout
#endif // #ifndef SPROUT_WEED_DETAIL_IS_DIFFERENT_ELEM_HPP