add a geojson debugger that allows creating features for easy inspection

src/util/geojson_debug_policies.cpp

@@ -0,0 +1,71 @@
+#include "util/geojson_debug_policies.hpp"
+#include "util/coordinate.hpp"
+#include "util/geojson_debug_policy_toolkit.hpp"
+
+#include <algorithm>
+
+namespace osrm
+{
+namespace util
+{
+
+//----------------------------------------------------------------
+NodeIdVectorToLineString::NodeIdVectorToLineString(
+    const std::vector<extractor::QueryNode> &node_coordinates)
+    : node_coordinates(node_coordinates)
+{
+}
+
+// converts a vector of node ids into a linestring geojson feature
+util::json::Object NodeIdVectorToLineString::
+operator()(const std::vector<NodeID> &node_ids,
+           const boost::optional<json::Object> &properties) const
+{
+    util::json::Array coordinates;
+    std::transform(node_ids.begin(),
+                   node_ids.end(),
+                   std::back_inserter(coordinates.values),
+                   NodeIdToCoordinate(node_coordinates));
+
+    return makeFeature("LineString", std::move(coordinates), properties);
+}
+
+//----------------------------------------------------------------
+NodeIdVectorToMultiPoint::NodeIdVectorToMultiPoint(
+    const std::vector<extractor::QueryNode> &node_coordinates)
+    : node_coordinates(node_coordinates)
+{
+}
+util::json::Object NodeIdVectorToMultiPoint::
+operator()(const std::vector<NodeID> &node_ids,
+           const boost::optional<json::Object> &properties) const
+{
+    util::json::Array coordinates;
+    std::transform(node_ids.begin(),
+                   node_ids.end(),
+                   std::back_inserter(coordinates.values),
+                   NodeIdToCoordinate(node_coordinates));
+
+    return makeFeature("MultiPoint", std::move(coordinates), properties);
+}
+
+//----------------------------------------------------------------
+util::json::Object CoordinateVectorToMultiPoint::
+operator()(const std::vector<util::Coordinate> &input_coordinates,
+           const boost::optional<json::Object> &properties) const
+{
+    const auto coordinates = makeJsonArray(input_coordinates);
+    return makeFeature("MultiPoint", std::move(coordinates), properties);
+}
+
+//----------------------------------------------------------------
+util::json::Object CoordinateVectorToLineString::
+operator()(const std::vector<util::Coordinate> &input_coordinates,
+           const boost::optional<json::Object> &properties) const
+{
+    const auto coordinates = makeJsonArray(input_coordinates);
+    return makeFeature("LineString", std::move(coordinates), properties);
+}
+
+} /* namespace util */
+} /* namespace osrm */