mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2016 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_FUNCTIONAL_HASH_HASH_VALUE_TRAITS_HPP
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#define SPROUT_FUNCTIONAL_HASH_HASH_VALUE_TRAITS_HPP
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#include <sprout/config.hpp>
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#include <sprout/workaround/std/cstddef.hpp>
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#include <sprout/functional/hash/hash_fwd.hpp>
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#include <sprout/adl/not_found.hpp>
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namespace sprout_adl {
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sprout::not_found_via_adl hash_value(...);
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} // namespace sprout_adl
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namespace sprout_hash_detail {
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template<typename T>
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inline SPROUT_CONSTEXPR std::size_t
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call_hash_value(T const& v) {
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using sprout::hash_value;
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using sprout_adl::hash_value;
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return hash_value(v);
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}
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} // namespace sprout_hash_detail
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namespace sprout {
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//
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// hash_value_traits
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//
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template<typename T>
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struct hash_value_traits {
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public:
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static SPROUT_CONSTEXPR std::size_t
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hash_value(T const& v) {
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return sprout_hash_detail::call_hash_value(v);
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}
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};
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template<typename T>
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struct hash_value_traits<T const>
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: public sprout::hash_value_traits<T>
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{};
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template<typename T>
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struct hash_value_traits<T volatile>
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: public sprout::hash_value_traits<T>
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{};
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template<typename T>
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struct hash_value_traits<T const volatile>
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: public sprout::hash_value_traits<T>
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{};
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} // namespace sprout
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#include <sprout/functional/hash/hash_range.hpp>
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#include <sprout/functional/hash/hash_value.hpp>
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#endif // #ifndef SPROUT_FUNCTIONAL_HASH_HASH_VALUE_TRAITS_HPP
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