Sprout/sprout/logic/tribool/hash.hpp
2014-01-08 16:48:12 +09:00

71 lines
2 KiB
C++

/*=============================================================================
Copyright (c) 2011-2014 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_LOGIC_TRIBOOL_HASH_HPP
#define SPROUT_LOGIC_TRIBOOL_HASH_HPP
#include <cstddef>
#include <functional>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/logic/tribool/tribool.hpp>
#include <sprout/functional/hash.hpp>
namespace sprout {
//
// hash_value_traits
//
template<>
struct hash_value_traits<sprout::logic::indeterminate_keyword_t> {
public:
static SPROUT_CONSTEXPR std::size_t
hash_value(sprout::logic::indeterminate_keyword_t) {
return sprout::logic::tribool::indeterminate_value;
}
};
template<>
struct hash_value_traits<std::remove_pointer<sprout::logic::indeterminate_keyword_t>::type> {
public:
static 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