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#pragma once
#include "routing_common/transit_types.hpp"
#include "indexer/geometry_coding.hpp"
#include "geometry/point2d.hpp"
#include "coding/point_to_integer.hpp"
#include "coding/read_write_utils.hpp"
#include "coding/reader.hpp"
#include "coding/varint.hpp"
#include "coding/write_to_sink.hpp"
#include "base/assert.hpp"
#include "base/exception.hpp"
#include "base/macros.hpp"
#include <cmath>
#include <cstdint>
#include <limits>
#include <sstream>
#include <string>
#include <type_traits>
#include <vector>
namespace routing
{
namespace transit
{
// Note. For the time being double in transit section is used only for saving weight of edges (in seconds).
// Let us assume that it takes less than 10^7 seconds (115 days) to get from one station to a neighboring one.
double constexpr kMinDoubleAtTransitSection = kInvalidWeight;
double constexpr kMaxDoubleAtTransitSection = 10000000.0;
uint32_t constexpr kDoubleBits = 32;
template <typename Sink>
class Serializer
{
public:
Serializer(Sink & sink) : m_sink(sink) {}
template <typename T>
typename std::enable_if<(std::is_integral<T>::value || std::is_enum<T>::value) &&
!std::is_same<T, uint32_t>::value && !std::is_same<T, uint64_t>::value &&
!std::is_same<T, int32_t>::value &&
!std::is_same<T, int64_t>::value>::type
operator()(T const & t, char const * /* name */ = nullptr)
{
WriteToSink(m_sink, t);
}
template <typename T>
typename std::enable_if<std::is_same<T, uint32_t>::value ||
std::is_same<T, uint64_t>::value>::type
operator()(T t, char const * name = nullptr) const
{
WriteVarUint(m_sink, t);
}
template <typename T>
typename std::enable_if<std::is_same<T, int32_t>::value || std::is_same<T, int64_t>::value>::type
operator()(T t, char const * name = nullptr) const
{
WriteVarInt(m_sink, t);
}
template <typename T>
typename std::enable_if<std::is_same<T, double>::value || std::is_same<T, float>::value>::type
operator()(T d, char const * name = nullptr)
{
CHECK_GREATER_OR_EQUAL(d, kMinDoubleAtTransitSection, ());
CHECK_LESS_OR_EQUAL(d, kMaxDoubleAtTransitSection, ());
(*this)(DoubleToUint32(d, kMinDoubleAtTransitSection, kMaxDoubleAtTransitSection, kDoubleBits), name);
}
void operator()(std::string const & s, char const * /* name */ = nullptr)
{
rw::Write(m_sink, s);
}
void operator()(m2::PointD const & p, char const * /* name */ = nullptr)
{
WriteVarInt(m_sink, PointToInt64(p, POINT_COORD_BITS));
}
void operator()(std::vector<m2::PointD> const & vs, char const * /* name */ = nullptr)
{
CHECK_LESS_OR_EQUAL(vs.size(), std::numeric_limits<uint64_t>::max(), ());
WriteVarUint(m_sink, static_cast<uint64_t>(vs.size()));
m2::PointU lastEncodedPoint;
for (auto const & p : vs)
{
m2::PointU const pointU = PointD2PointU(p, POINT_COORD_BITS);
WriteVarUint(m_sink, EncodeDelta(pointU, lastEncodedPoint));
lastEncodedPoint = pointU;
}
}
void operator()(FeatureIdentifiers const & id, char const * name = nullptr)
{
(*this)(id.GetFeatureId(), name);
}
void operator()(StopIdRanges const & rs, char const * name = nullptr)
{
(*this)(rs.GetIds(), name);
}
template <typename T>
void operator()(std::vector<T> const & vs, char const * /* name */ = nullptr)
{
CHECK_LESS_OR_EQUAL(vs.size(), std::numeric_limits<uint64_t>::max(), ());
WriteVarUint(m_sink, static_cast<uint64_t>(vs.size()));
for (auto const & v : vs)
(*this)(v);
}
template<typename T>
typename std::enable_if<std::is_class<T>::value>::type operator()(T const & t, char const * /* name */ = nullptr)
{
t.Visit(*this);
}
private:
Sink & m_sink;
};
template <typename Source>
class Deserializer
{
public:
Deserializer(Source & source) : m_source(source) {}
template <typename T>
typename std::enable_if<(std::is_integral<T>::value || std::is_enum<T>::value) &&
!std::is_same<T, uint32_t>::value && !std::is_same<T, uint64_t>::value &&
!std::is_same<T, int32_t>::value &&
!std::is_same<T, int64_t>::value>::type
operator()(T & t, char const * name = nullptr)
{
ReadPrimitiveFromSource(m_source, t);
}
template <typename T>
typename std::enable_if<std::is_same<T, uint32_t>::value ||
std::is_same<T, uint64_t>::value>::type
operator()(T & t, char const * name = nullptr)
{
t = ReadVarUint<T, Source>(m_source);
}
template <typename T>
typename std::enable_if<std::is_same<T, int32_t>::value || std::is_same<T, int64_t>::value>::type
operator()(T & t, char const * name = nullptr)
{
t = ReadVarInt<T, Source>(m_source);
}
template <typename T>
typename std::enable_if<std::is_same<T, double>::value || std::is_same<T, float>::value>::type
operator()(T & d, char const * name = nullptr)
{
uint32_t ui;
(*this)(ui, name);
d = Uint32ToDouble(ui, kMinDoubleAtTransitSection, kMaxDoubleAtTransitSection, kDoubleBits);
}
void operator()(std::string & s, char const * /* name */ = nullptr)
{
rw::Read(m_source, s);
}
void operator()(m2::PointD & p, char const * /* name */ = nullptr)
{
p = Int64ToPoint(ReadVarInt<int64_t, Source>(m_source), POINT_COORD_BITS);
}
void operator()(FeatureIdentifiers & id, char const * name = nullptr)
{
FeatureId featureId;
operator()(featureId, name);
id = FeatureIdentifiers(kInvalidOsmId, featureId);
}
void operator()(StopIdRanges & rs, char const * name = nullptr)
{
operator()(rs.m_ids, name);
}
void operator()(vector<m2::PointD> & vs, char const * /* name */ = nullptr)
{
auto const size = ReadVarUint<uint64_t, Source>(m_source);
m2::PointU lastDecodedPoint;
vs.resize(size);
for (auto & p : vs)
{
m2::PointU const pointU = DecodeDelta(ReadVarUint<uint64_t, Source>(m_source), lastDecodedPoint);
p = PointU2PointD(pointU, POINT_COORD_BITS);
lastDecodedPoint = pointU;
}
}
template <typename T>
void operator()(vector<T> & vs, char const * /* name */ = nullptr)
{
auto const size = ReadVarUint<uint64_t, Source>(m_source);
vs.resize(size);
for (auto & v : vs)
(*this)(v);
}
template<typename T>
typename std::enable_if<std::is_class<T>::value>::type operator()(T & t, char const * /* name */ = nullptr)
{
t.Visit(*this);
}
private:
Source & m_source;
};
} // namespace transit
} // namespace routing
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