text: /*
  
  Copyright (c) 2014, Project OSRM contributors
  All rights reserved.
  
  Redistribution and use in source and binary forms, with or without modification,
  are permitted provided that the following conditions are met:
  
  Redistributions of source code must retain the above copyright notice, this list
  of conditions and the following disclaimer.
  Redistributions in binary form must reproduce the above copyright notice, this
  list of conditions and the following disclaimer in the documentation and/or
  other materials provided with the distribution.
  
  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  */
  
  #ifndef INTERNAL_EXTRACTOR_EDGE_HPP
  #define INTERNAL_EXTRACTOR_EDGE_HPP
  
  #include "../typedefs.h"
  #include "../data_structures/travel_mode.hpp"
  #include "../data_structures/import_edge.hpp"
  
  #include <boost/assert.hpp>
  
  #include <osrm/coordinate.hpp>
  #include <utility>
  
  struct InternalExtractorEdge
  {
      // specify the type of the weight data
      enum class WeightType : char {
          INVALID,
          SPEED,
          EDGE_DURATION,
          WAY_DURATION,
      };
  
      struct WeightData
      {
  
          WeightData() : duration(0.0), type(WeightType::INVALID)
          {
          }
  
          union
          {
              double duration;
              double speed;
          };
          WeightType type;
      };
  
      explicit InternalExtractorEdge()
          : result(0, 0, 0, 0, false, false, false, false,
                  TRAVEL_MODE_INACCESSIBLE, false)
      {
      }
  
      explicit InternalExtractorEdge(NodeID source,
                                     NodeID target,
                                     NodeID name_id,
                                     WeightData weight_data,
                                     bool forward,
                                     bool backward,
                                     bool roundabout,
                                     bool access_restricted,
                                     TravelMode travel_mode,
                                     bool is_split)
          : result(source,
                   target,
                   name_id,
                   0,
                   forward,
                   backward,
                   roundabout,
                   access_restricted,
                   travel_mode,
                   is_split),
            weight_data(std::move(weight_data))
      {
      }
  
      // data that will be written to disk
      NodeBasedEdge result;
      // intermediate edge weight
      WeightData weight_data;
      // coordinate of the source node
      FixedPointCoordinate source_coordinate;
  
  
      // necessary static util functions for stxxl's sorting
      static InternalExtractorEdge min_value()
      {
          return InternalExtractorEdge(0, 0, 0, WeightData(), false, false, false,
                                       false, TRAVEL_MODE_INACCESSIBLE, false);
      }
      static InternalExtractorEdge max_value()
      {
          return InternalExtractorEdge(SPECIAL_NODEID, SPECIAL_NODEID, 0, WeightData(), false,
                                       false, false, false, TRAVEL_MODE_INACCESSIBLE, false);
      }
  };
  
  struct CmpEdgeByStartThenTargetID
  {
      using value_type = InternalExtractorEdge;
      bool operator()(const InternalExtractorEdge &lhs, const InternalExtractorEdge &rhs) const
      {
          return (lhs.result.source <  rhs.result.source) ||
                ((lhs.result.source == rhs.result.source) &&
                 (lhs.result.target <  rhs.result.target));
      }
  
      value_type max_value() { return InternalExtractorEdge::max_value(); }
      value_type min_value() { return InternalExtractorEdge::min_value(); }
  };
  
  struct CmpEdgeByStartID
  {
      using value_type = InternalExtractorEdge;
      bool operator()(const InternalExtractorEdge &lhs, const InternalExtractorEdge &rhs) const
      {
          return lhs.result.source < rhs.result.source;
      }
  
      value_type max_value() { return InternalExtractorEdge::max_value(); }
      value_type min_value() { return InternalExtractorEdge::min_value(); }
  };
  
  struct CmpEdgeByTargetID
  {
      using value_type = InternalExtractorEdge;
      bool operator()(const InternalExtractorEdge &lhs, const InternalExtractorEdge &rhs) const
      {
          return lhs.result.target < rhs.result.target;
      }
  
      value_type max_value() { return InternalExtractorEdge::max_value(); }
      value_type min_value() { return InternalExtractorEdge::min_value(); }
  };
  
  #endif // INTERNAL_EXTRACTOR_EDGE_HPP
  