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#ifndef CHILON_HASH_HPP |
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#define CHILON_HASH_HPP |
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|
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#include <boost/functional/hash.hpp> |
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|
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#include <vector> |
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#include <type_traits> |
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|
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namespace chilon { |
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|
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namespace detail { |
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struct hashable {}; |
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|
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template <class T, bool Custom> |
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struct hasher : T::hash_type {}; |
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|
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template <class T> |
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struct hasher<T, false> : std::hash<T> {}; |
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} |
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|
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template <class T> |
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struct hasher |
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: detail::hasher<T, std::is_base_of<detail::hashable, T>::value> {}; |
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|
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template <class T> |
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struct hasher< std::vector<T> > { |
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size_t operator()(std::vector<T> const& t) const { |
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return boost::hash_range(t.begin(), t.end()); |
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} |
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}; |
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|
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template <class T> |
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size_t hash(T const& t) { |
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return hasher<T>()(t); |
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} |
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|
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template <class H> |
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struct hashable : detail::hashable { |
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typedef H hash_type; |
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}; |
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|
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} |
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#endif |