Sprout/sprout/weed/attr_cnv/negate.hpp
bolero-MURAKAMI a7698fa6e9 sprout/weed/context/parse_context/operator/minus.hpp 追加
sprout/weed/context/parse_context/operator/negate.hpp 追加
2011-11-14 19:45:59 +09:00

28 lines
797 B
C++

#ifndef SPROUT_WEED_ATTR_CNV_NEGATE_HPP
#define SPROUT_WEED_ATTR_CNV_NEGATE_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/weed/unused.hpp>
#include <sprout/weed/traits/type/is_unused.hpp>
#include <sprout/weed/attr_cnv/result_of/negate.hpp>
namespace sprout {
namespace weed {
namespace attr_cnv {
//
// negate
//
// !unused -> unused
template<typename T>
SPROUT_CONSTEXPR inline typename std::enable_if<
sprout::weed::traits::is_unused<T>::value,
typename sprout::weed::attr_cnv::result_of::negate<T>::type
>::type negate(T const& t, bool cond) {
return sprout::weed::unused();
}
} // namespace attr_cnv
} // namespace weed
} // namespace sprout
#endif // #ifndef SPROUT_WEED_ATTR_CNV_NEGATE_HPP