mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
41 lines
1.2 KiB
C++
41 lines
1.2 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2016 Bolero MURAKAMI
|
|
https://github.com/bolero-MURAKAMI/Sprout
|
|
|
|
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 SPROUT_WEED_ATTR_CNV_RESULTS_NEGATE_HPP
|
|
#define SPROUT_WEED_ATTR_CNV_RESULTS_NEGATE_HPP
|
|
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/type_traits/identity.hpp>
|
|
#include <sprout/weed/unused.hpp>
|
|
#include <sprout/weed/traits/type/is_unused.hpp>
|
|
|
|
namespace sprout {
|
|
namespace weed {
|
|
namespace attr_cnv {
|
|
namespace results {
|
|
//
|
|
// negate
|
|
//
|
|
template<typename T, typename = void>
|
|
struct negate;
|
|
// -unused -> unused
|
|
template<typename T>
|
|
struct negate<
|
|
T,
|
|
typename std::enable_if<
|
|
sprout::weed::traits::is_unused<T>::value
|
|
>::type
|
|
>
|
|
: public sprout::identity<sprout::weed::unused>
|
|
{};
|
|
} // namespace results
|
|
} // namespace attr_cnv
|
|
} // namespace weed
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_WEED_ATTR_CNV_RESULTS_NEGATE_HPP
|