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#pragma once
#include "platform/country_file.hpp"
#include "base/assert.hpp"
#include "base/checked_cast.hpp"
#include <cstdint>
#include <limits>
#include <map>
#include <vector>
namespace routing
{
using NumMwmId = std::uint16_t;
NumMwmId constexpr kFakeNumMwmId = std::numeric_limits<NumMwmId>::max();
class NumMwmIds final
{
public:
void RegisterFile(platform::CountryFile const & file)
{
if (ContainsFile(file))
return;
NumMwmId const id = base::asserted_cast<NumMwmId>(m_idToFile.size());
m_idToFile.push_back(file);
m_fileToId[file] = id;
}
bool ContainsFile(platform::CountryFile const & file) const
{
return m_fileToId.find(file) != m_fileToId.cend();
}
platform::CountryFile const & GetFile(NumMwmId mwmId) const
{
size_t const index = base::asserted_cast<size_t>(mwmId);
CHECK_LESS(index, m_idToFile.size(), ());
return m_idToFile[index];
}
NumMwmId GetId(platform::CountryFile const & file) const
{
auto const it = m_fileToId.find(file);
CHECK(it != m_fileToId.cend(), ("Can't find mwm id for", file));
return it->second;
}
template <typename F>
void ForEachId(F && f) const
{
for (NumMwmId id = 0; id < base::asserted_cast<NumMwmId>(m_idToFile.size()); ++id)
f(id);
}
private:
std::vector<platform::CountryFile> m_idToFile;
std::map<platform::CountryFile, NumMwmId> m_fileToId;
};
} // namespace routing
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