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39 lines
733 B
C++
39 lines
733 B
C++
#pragma once
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#include "base/string_utils.hpp"
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#include <cstdint>
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#include <map>
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namespace search
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{
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class IdfMap
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{
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public:
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struct Delegate
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{
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virtual ~Delegate() = default;
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virtual uint64_t GetNumDocs(strings::UniString const & token, bool isPrefix) const = 0;
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};
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IdfMap(Delegate const & delegate, double unknownIdf);
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double Get(strings::UniString const & s, bool isPrefix)
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{
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return GetImpl(isPrefix ? m_prefixIdfs : m_fullIdfs, s, isPrefix);
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}
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private:
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using Map = std::map<strings::UniString, double>;
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double GetImpl(Map & idfs, strings::UniString const & s, bool isPrefix);
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Map m_fullIdfs;
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Map m_prefixIdfs;
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Delegate const & m_delegate;
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double m_unknownIdf;
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};
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} // namespace search
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