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#pragma once
#include "generator/generate_info.hpp"
#include "generator/osm_element.hpp"
#include <functional>
#include <iostream>
#include <memory>
#include <sstream>
#include <string>
#include <vector>
class SourceReader
{
struct Deleter
{
bool m_needDelete;
Deleter(bool needDelete = true) : m_needDelete(needDelete) {}
void operator()(std::istream * s) const
{
if (m_needDelete)
delete s;
}
};
std::unique_ptr<std::istream, Deleter> m_file;
public:
SourceReader();
explicit SourceReader(std::string const & filename);
explicit SourceReader(std::istringstream & stream);
uint64_t Read(char * buffer, uint64_t bufferSize);
};
class FeatureBuilder1;
// Emitter is used in OsmElemen to FeatureBuilder translation process.
class EmitterBase
{
public:
virtual ~EmitterBase() = default;
/// This method is used by OsmTranslator to pass |fb| to Emitter for further processing.
virtual void operator()(FeatureBuilder1 & fb) = 0;
/// Finish is used in GenerateFeatureImpl to make whatever work is needed after
/// all OmsElements are processed.
virtual bool Finish() { return true; }
/// Sets buckets (mwm names).
// TODO(syershov): Make this topic clear.
virtual void GetNames(std::vector<std::string> & names) const = 0;
};
std::unique_ptr<EmitterBase> MakeMainFeatureEmitter(feature::GenerateInfo const & info);
using EmitterFactory = std::function<std::unique_ptr<EmitterBase>(feature::GenerateInfo const &)>;
bool GenerateFeatures(feature::GenerateInfo & info,
EmitterFactory factory = MakeMainFeatureEmitter);
bool GenerateIntermediateData(feature::GenerateInfo & info);
void ProcessOsmElementsFromO5M(SourceReader & stream, std::function<void(OsmElement *)> processor);
void ProcessOsmElementsFromXML(SourceReader & stream, std::function<void(OsmElement *)> processor);
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