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#pragma once
#include "geometry_serialization.hpp"
#include "../coding/reader.hpp"
#include "../coding/trie.hpp"
#include "../coding/trie_reader.hpp"
namespace search
{
namespace trie
{
// Value: feature offset and search rank are stored.
class ValueReader
{
serial::CodingParams const & m_cp;
public:
explicit ValueReader(serial::CodingParams const & cp) : m_cp(cp) {}
struct ValueType
{
m2::PointD m_pt; // Center point of feature;
uint32_t m_featureId; // Offset of the feature;
uint8_t m_rank; // Rank of feature;
};
template <typename SourceT> void operator() (SourceT & src, ValueType & v) const
{
v.m_pt = serial::LoadPoint(src, m_cp);
v.m_featureId = ReadPrimitiveFromSource<uint32_t>(src);
v.m_rank = ReadPrimitiveFromSource<uint8_t>(src);
}
template <class TSink> void Save(TSink & sink, ValueType const & v) const
{
serial::SavePoint(sink, v.m_pt, m_cp);
WriteToSink(sink, v.m_featureId);
WriteToSink(sink, v.m_rank);
}
};
typedef ::trie::reader::EmptyValueReader EdgeValueReader;
} // namespace search::trie
typedef ::trie::Iterator<
trie::ValueReader::ValueType,
trie::EdgeValueReader::ValueType> TrieIterator;
static const uint8_t CATEGORIES_LANG = 128;
static const uint8_t POINT_CODING_BITS = 20;
inline serial::CodingParams GetCPForTrie(serial::CodingParams const & orig)
{
CoordPointT const p = PointU2PointD(orig.GetBasePoint(), orig.GetCoordBits());
return serial::CodingParams(POINT_CODING_BITS, m2::PointD(p.first, p.second));
}
} // namespace search
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