Function ParseGeometry

generator/address_parser/tiger_parser.cpp:11–53

using namespace strings;

void ParseGeometry(std::string_view s, std::vector<ms::LatLon> & geom)
{
  std::string_view constexpr prefix = "LINESTRING(";
  if (!s.ends_with(')') || !s.starts_with(prefix))
    return;

  s.remove_prefix(prefix.size());
  s.remove_suffix(1);

  ms::LatLon last;
  auto const skipPoint = [&last, &geom]()
  {
    // Check simple distance (meters) threshold.
    return !geom.empty() && ms::DistanceOnEarth(geom.back(), last) < 10.0;
  };

  Tokenize(s, ",", [&](std::string_view s)
  {
    auto i = s.find(' ');
    CHECK(i != std::string_view::npos, (s));

    CHECK(to_double(s.substr(0, i), last.m_lon), (s));
    CHECK(to_double(s.substr(i + 1), last.m_lat), (s));

    if (!skipPoint())
      geom.push_back(last);
  });

  if (skipPoint())
  {
    auto & back = geom.back();
    if (geom.size() == 1)
    {
      // Set one middle point address.
      back = ms::LatLon{(back.m_lat + last.m_lat) / 2.0, (back.m_lon + last.m_lon) / 2.0};
    }
    else
    {
      // Replace last point.
      back = last;
    }
  }
}

feature::InterpolType ParseInterpolation(std::string_view s)
{