Add feature to fill null matrix entries with straight-line estimates.

include/engine/api/table_parameters.hpp

@@ -59,6 +59,7 @@ struct TableParameters : public BaseParameters
 {
     std::vector<std::size_t> sources;
     std::vector<std::size_t> destinations;
+    std::size_t noroute_estimate = 0;
 
     enum class AnnotationsType
     {
@@ -74,19 +75,22 @@ struct TableParameters : public BaseParameters
     template <typename... Args>
     TableParameters(std::vector<std::size_t> sources_,
                     std::vector<std::size_t> destinations_,
+                    std::size_t noroute_estimate_,
                     Args... args_)
         : BaseParameters{std::forward<Args>(args_)...}, sources{std::move(sources_)},
-          destinations{std::move(destinations_)}
+          destinations{std::move(destinations_)}, noroute_estimate{noroute_estimate_}
     {
     }
 
     template <typename... Args>
     TableParameters(std::vector<std::size_t> sources_,
                     std::vector<std::size_t> destinations_,
+                    std::size_t noroute_estimate_,
                     const AnnotationsType annotations_,
                     Args... args_)
         : BaseParameters{std::forward<Args>(args_)...}, sources{std::move(sources_)},
-          destinations{std::move(destinations_)}, annotations{annotations_}
+          destinations{std::move(destinations_)}, noroute_estimate{noroute_estimate_},
+          annotations{annotations_}
     {
     }
 

include/nodejs/node_osrm_support.hpp

@@ -1183,6 +1183,19 @@ argumentsToTableParameter(const Nan::FunctionCallbackInfo<v8::Value> &args,
         }
     }
 
+    if (obj->Has(Nan::New("noroute_estimate").ToLocalChecked()))
+    {
+        auto noroute_estimate = obj->Get(Nan::New("noroute_estimate").ToLocalChecked());
+
+        if (!noroute_estimate->IsNumber() && !noroute_estimate->IsUint32())
+        {
+            Nan::ThrowError("noroute_estimate must be an integral number");
+            return table_parameters_ptr();
+        }
+
+        params->noroute_estimate = static_cast<size_t>(noroute_estimate->NumberValue());
+    }
+
     return params;
 }
 

include/server/api/table_parameter_grammar.hpp

@@ -48,10 +48,16 @@ struct TableParametersGrammar : public BaseParametersGrammar<Iterator, Signature
             (qi::lit("all") |
              (size_t_ % ';')[ph::bind(&engine::api::TableParameters::sources, qi::_r1) = qi::_1]);
 
+        noroute_estimate_rule =
+            qi::lit("noroute_estimate=") >
+            (size_t_)[ph::bind(&engine::api::TableParameters::noroute_estimate, qi::_r1) = qi::_1];
+
         table_rule = destinations_rule(qi::_r1) | sources_rule(qi::_r1);
 
-        root_rule = BaseGrammar::query_rule(qi::_r1) > -qi::lit(".json") >
-                    -('?' > (table_rule(qi::_r1) | base_rule(qi::_r1)) % '&');
+        root_rule =
+            BaseGrammar::query_rule(qi::_r1) > -qi::lit(".json") >
+            -('?' >
+              (table_rule(qi::_r1) | base_rule(qi::_r1) | noroute_estimate_rule(qi::_r1)) % '&');
     }
 
     TableParametersGrammar(qi::rule<Iterator, Signature> &root_rule_) : BaseGrammar(root_rule_)
@@ -77,6 +83,7 @@ struct TableParametersGrammar : public BaseParametersGrammar<Iterator, Signature
     qi::rule<Iterator, Signature> table_rule;
     qi::rule<Iterator, Signature> sources_rule;
     qi::rule<Iterator, Signature> destinations_rule;
+    qi::rule<Iterator, Signature> noroute_estimate_rule;
     qi::rule<Iterator, std::size_t()> size_t_;
     qi::symbols<char, engine::api::TableParameters::AnnotationsType> annotations;
     qi::rule<Iterator, engine::api::TableParameters::AnnotationsType()> annotations_list;