osrm-backend/include/engine/guidance/assemble_route.hpp

#ifndef ENGINE_GUIDANCE_ASSEMBLE_ROUTE_HPP
#define ENGINE_GUIDANCE_ASSEMBLE_ROUTE_HPP

#include "engine/guidance/route_leg.hpp"
#include "engine/guidance/route.hpp"

#include <vector>
#include <algorithm>

namespace osrm
{
namespace engine
{
namespace guidance
{
inline Route assembleRoute(const std::vector<RouteLeg> &route_legs)
{
    auto distance = std::accumulate(route_legs.begin(), route_legs.end(), 0.,
                                    [](const double sum, const RouteLeg &leg)
                                    {
                                        return sum + leg.distance;
                                    });
    auto duration = std::accumulate(route_legs.begin(), route_legs.end(), 0.,
                                    [](const double sum, const RouteLeg &leg)
                                    {
                                        return sum + leg.duration;
                                    });

    return Route{duration, distance};
}

} // namespace guidance
} // namespace engine
} // namespace osrm

#endif