osrm-backend/include/guidance/motorway_handler.hpp

#ifndef OSRM_EXTRACTOR_GUIDANCE_MOTORWAY_HANDLER_HPP_
#define OSRM_EXTRACTOR_GUIDANCE_MOTORWAY_HANDLER_HPP_

#include "extractor/query_node.hpp"
#include "guidance/intersection.hpp"
#include "guidance/intersection_handler.hpp"
#include "guidance/is_through_street.hpp"

#include "util/attributes.hpp"
#include "util/name_table.hpp"
#include "util/node_based_graph.hpp"

#include <vector>

namespace osrm
{
namespace extractor
{
namespace guidance
{

// Intersection handlers deal with all issues related to intersections.
class MotorwayHandler : public IntersectionHandler
{
  public:
    MotorwayHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                    const EdgeBasedNodeDataContainer &node_data_container,
                    const std::vector<util::Coordinate> &coordinates,
                    const extractor::CompressedEdgeContainer &compressed_geometries,
                    const RestrictionMap &node_restriction_map,
                    const std::unordered_set<NodeID> &barrier_nodes,
                    const guidance::TurnLanesIndexedArray &turn_lanes_data,
                    const util::NameTable &name_table,
                    const SuffixTable &street_name_suffix_table);

    ~MotorwayHandler() override final = default;

    // check whether the handler can actually handle the intersection
    bool canProcess(const NodeID nid,
                    const EdgeID via_eid,
                    const Intersection &intersection) const override final;

    // process the intersection
    Intersection operator()(const NodeID nid,
                            const EdgeID via_eid,
                            Intersection intersection) const override final;

  private:
    OSRM_ATTR_WARN_UNUSED
    Intersection handleSliproads(const NodeID intersection_node_id,
                                 Intersection intersection) const;

    OSRM_ATTR_WARN_UNUSED
    Intersection fromMotorway(const EdgeID via_edge, Intersection intersection) const;

    OSRM_ATTR_WARN_UNUSED
    Intersection fromRamp(const EdgeID via_edge, Intersection intersection) const;

    OSRM_ATTR_WARN_UNUSED
    Intersection fallback(Intersection intersection) const;
};

} // namespace guidance
} // namespace extractor
} // namespace osrm

#endif /*OSRM_EXTRACTOR_GUIDANCE_MOTORWAY_HANDLER_HPP_*/