mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-29 01:03:45 +00:00
113 lines
3 KiB
C++
113 lines
3 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2017 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_HPP
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#define SPROUT_FUNCTIONAL_HASH_HASH_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/functional/hash/to_hash.hpp>
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#include <sprout/utility/forward.hpp>
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namespace sprout {
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//
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// hash
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//
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template<typename T = void>
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struct hash {
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public:
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typedef T argument_type;
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typedef std::size_t result_type;
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public:
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SPROUT_CONSTEXPR std::size_t operator()(T const& v) const {
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return sprout::to_hash(v);
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}
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};
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template<typename T>
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struct hash<T const>
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: public sprout::hash<T>
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{};
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template<typename T>
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struct hash<T volatile>
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: public sprout::hash<T>
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{};
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template<typename T>
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struct hash<T const volatile>
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: public sprout::hash<T>
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{};
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template<>
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struct hash<void> {
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public:
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typedef std::size_t result_type;
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public:
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template<typename T>
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SPROUT_CONSTEXPR std::size_t
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operator()(T&& v)
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const SPROUT_NOEXCEPT_IF_EXPR(sprout::to_hash(SPROUT_FORWARD(T, v)))
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{
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return sprout::to_hash(SPROUT_FORWARD(T, v));
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}
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};
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#define SPROUT_HASH_SPECIALIZE(TYPE) \
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template<> \
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struct hash<TYPE> { \
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public: \
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typedef TYPE argument_type; \
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typedef std::size_t result_type; \
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public: \
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SPROUT_CONSTEXPR std::size_t operator()(TYPE v) const { \
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return sprout::to_hash(v); \
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} \
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}
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#define SPROUT_HASH_SPECIALIZE_REF(TYPE) \
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template<> \
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struct hash<TYPE> { \
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public: \
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typedef TYPE argument_type; \
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typedef std::size_t result_type; \
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public: \
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SPROUT_CONSTEXPR std::size_t operator()(TYPE const& v) const { \
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return sprout::to_hash(v); \
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} \
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}
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SPROUT_HASH_SPECIALIZE(bool);
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SPROUT_HASH_SPECIALIZE(char);
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SPROUT_HASH_SPECIALIZE(signed char);
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SPROUT_HASH_SPECIALIZE(unsigned char);
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#if SPROUT_USE_UNICODE_LITERALS
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SPROUT_HASH_SPECIALIZE(char16_t);
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SPROUT_HASH_SPECIALIZE(char32_t);
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#endif
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SPROUT_HASH_SPECIALIZE(wchar_t);
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SPROUT_HASH_SPECIALIZE(short);
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SPROUT_HASH_SPECIALIZE(unsigned short);
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SPROUT_HASH_SPECIALIZE(int);
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SPROUT_HASH_SPECIALIZE(unsigned int);
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SPROUT_HASH_SPECIALIZE(long);
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SPROUT_HASH_SPECIALIZE(unsigned long);
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SPROUT_HASH_SPECIALIZE(long long);
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SPROUT_HASH_SPECIALIZE(unsigned long long);
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#undef SPROUT_HASH_SPECIALIZE
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#undef SPROUT_HASH_SPECIALIZE_REF
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template<typename T>
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struct hash<T*> {
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public:
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typedef T* argument_type;
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typedef std::size_t result_type;
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public:
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std::size_t operator()(T* v) const {
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return sprout::to_hash(v);
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}
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};
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} // namespace sprout
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#endif // #ifndef SPROUT_FUNCTIONAL_HASH_HASH_HPP
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