Sprout/sprout/logic/tribool/hash.hpp
2013-04-21 13:30:30 +09:00

50 lines
1.2 KiB
C++

#ifndef SPROUT_LOGIC_TRIBOOL_HASH_HPP
#define SPROUT_LOGIC_TRIBOOL_HASH_HPP
#include <cstddef>
#include <functional>
#include <sprout/config.hpp>
#include <sprout/logic/tribool/tribool.hpp>
#include <sprout/functional/hash.hpp>
namespace sprout {
//
// hash_value
//
inline SPROUT_CONSTEXPR std::size_t
hash_value(sprout::logic::indeterminate_keyword_t) {
return sprout::logic::tribool::indeterminate_value;
}
namespace logic {
//
// hash_value
//
inline SPROUT_CONSTEXPR std::size_t
hash_value(sprout::logic::tribool const& v) {
return sprout::to_hash(v.value);
}
} // namespace logic
} // namespace sprout
namespace std {
#if defined(__clang__)
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wmismatched-tags"
#endif
//
// hash
//
template<>
struct hash<sprout::logic::indeterminate_keyword_t>
: public sprout::hash<sprout::logic::indeterminate_keyword_t>
{};
template<>
struct hash<sprout::logic::tribool>
: public sprout::hash<sprout::logic::tribool>
{};
#if defined(__clang__)
# pragma clang diagnostic pop
#endif
} // namespace std
#endif // #ifndef SPROUT_LOGIC_TRIBOOL_HASH_HPP