Address PR comments

Renamed lua_function_exists and removes unused print function

include/engine/api/route_parameters.hpp

@@ -60,7 +60,7 @@ struct RouteParameters : public BaseParameters
                     const bool alternatives_,
                     const GeometriesType geometries_,
                     const OverviewType overview_,
-                    boost::optional<bool> uturns_,
+                    const boost::optional<bool> uturns_,
                     Args... args_)
         : BaseParameters{std::forward<Args>(args_)...}, steps{steps_}, alternatives{alternatives_},
           geometries{geometries_}, overview{overview_}, uturns{uturns_}

include/extractor/extractor.hpp

@@ -40,7 +40,7 @@ namespace osrm
 namespace extractor
 {
 
-class ProfileProperties;
+struct ProfileProperties;
 
 class Extractor
 {

include/extractor/graph_compressor.hpp

@@ -21,8 +21,6 @@ class GraphCompressor
     using EdgeData = util::NodeBasedDynamicGraph::EdgeData;
 
   public:
-    GraphCompressor();
-
     void Compress(const std::unordered_set<NodeID> &barrier_nodes,
                   const std::unordered_set<NodeID> &traffic_lights,
                   RestrictionMap &restriction_map,

include/extractor/profile_properties.hpp

@@ -1,6 +1,8 @@
 #ifndef PROFILE_PROPERTIES_HPP
 #define PROFILE_PROPERTIES_HPP
 
+#include <boost/numeric/conversion/cast.hpp>
+
 namespace osrm
 {
 namespace extractor
@@ -20,7 +22,7 @@ struct ProfileProperties
 
     void SetUturnPenalty(const double u_turn_penalty_)
     {
-        u_turn_penalty = static_cast<int>(u_turn_penalty_ * 10.);
+        u_turn_penalty = boost::numeric_cast<int>(u_turn_penalty_ * 10.);
     }
 
     double GetTrafficSignalPenalty() const
@@ -30,7 +32,7 @@ struct ProfileProperties
 
     void SetTrafficSignalPenalty(const double traffic_signal_penalty_)
     {
-        traffic_signal_penalty = static_cast<int>(traffic_signal_penalty_ * 10.);
+        traffic_signal_penalty = boost::numeric_cast<int>(traffic_signal_penalty_ * 10.);
     }
 
     //! penalty to cross a traffic light in deci-seconds

include/extractor/scripting_environment.hpp

@@ -4,6 +4,8 @@
 #include "extractor/profile_properties.hpp"
 #include "extractor/raster_source.hpp"
 
+#include "util/lua_util.hpp"
+
 #include <string>
 #include <memory>
 #include <mutex>
@@ -28,12 +30,9 @@ class ScriptingEnvironment
   public:
     struct Context
     {
-        Context();
-        ~Context();
-
         ProfileProperties properties;
         SourceContainer sources;
-        lua_State *state;
+        util::LuaState state;
     };
 
     explicit ScriptingEnvironment(const std::string &file_name);
@@ -47,7 +46,7 @@ class ScriptingEnvironment
     void InitContext(Context &context);
     std::mutex init_mutex;
     std::string file_name;
-    tbb::enumerable_thread_specific<std::shared_ptr<Context>> script_contexts;
+    tbb::enumerable_thread_specific<std::unique_ptr<Context>> script_contexts;
 };
 }
 }

include/util/lua_util.hpp

@@ -18,10 +18,19 @@ namespace osrm
 namespace util
 {
 
-template <typename T> void LUA_print(T output) { std::cout << "[LUA] " << output << std::endl; }
+struct LuaState
+{
+    LuaState() : handle{::luaL_newstate(), &::lua_close} { luaL_openlibs(*this); }
+
+    operator lua_State *() { return handle.get(); }
+    operator lua_State const *() const { return handle.get(); }
+
+    using handle_type = std::unique_ptr<lua_State, decltype(&::lua_close)>;
+    handle_type handle;
+};
 
 // Check if the lua function <name> is defined
-inline bool lua_function_exists(lua_State *lua_state, const char *name)
+inline bool luaFunctionExists(lua_State *lua_state, const char *name)
 {
     luabind::object globals_table = luabind::globals(lua_state);
     luabind::object lua_function = globals_table[name];

src/extractor/edge_based_graph_factory.cpp

@@ -278,7 +278,7 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
     util::SimpleLogger().Write() << "generating edge-expanded edges";
 
     BOOST_ASSERT(lua_state != nullptr);
-    const bool use_turn_function = util::lua_function_exists(lua_state, "turn_function");
+    const bool use_turn_function = util::luaFunctionExists(lua_state, "turn_function");
 
     std::size_t node_based_edge_counter = 0;
     std::size_t original_edges_counter = 0;
@@ -454,7 +454,7 @@ int EdgeBasedGraphFactory::GetTurnPenalty(double angle, lua_State *lua_state) co
     {
         // call lua profile to compute turn penalty
         double penalty = luabind::call_function<double>(lua_state, "turn_function", 180. - angle);
-        return static_cast<int>(penalty);
+        return boost::numeric_cast<int>(penalty);
     }
     catch (const luabind::error &er)
     {

src/extractor/extraction_containers.cpp

@@ -288,7 +288,7 @@ void ExtractionContainers::PrepareEdges(lua_State *segment_state)
     const auto all_edges_list_end_ = all_edges_list.end();
     const auto all_nodes_list_end_ = all_nodes_list.end();
 
-    auto has_segment_function = util::lua_function_exists(segment_state, "segment_function");
+    const auto has_segment_function = util::luaFunctionExists(segment_state, "segment_function");
 
     while (edge_iterator != all_edges_list_end_ && node_iterator != all_nodes_list_end_)
     {

src/extractor/extractor.cpp

@@ -111,7 +111,7 @@ int Extractor::run()
         auto& main_context = scripting_environment.GetContex();
 
         // setup raster sources
-        if (util::lua_function_exists(main_context.state, "source_function"))
+        if (util::luaFunctionExists(main_context.state, "source_function"))
         {
             luabind::call_function<void>(main_context.state, "source_function");
         }

src/extractor/graph_compressor.cpp

@@ -13,10 +13,6 @@ namespace osrm
 namespace extractor
 {
 
-GraphCompressor::GraphCompressor()
-{
-}
-
 void GraphCompressor::Compress(const std::unordered_set<NodeID> &barrier_nodes,
                                const std::unordered_set<NodeID> &traffic_lights,
                                RestrictionMap &restriction_map,

src/extractor/restriction_parser.cpp

@@ -44,7 +44,7 @@ RestrictionParser::RestrictionParser(lua_State *lua_state, const ProfileProperti
 
 void RestrictionParser::ReadRestrictionExceptions(lua_State *lua_state)
 {
-    if (util::lua_function_exists(lua_state, "get_exceptions"))
+    if (util::luaFunctionExists(lua_state, "get_exceptions"))
     {
         luabind::set_pcall_callback(&luaErrorCallback);
         // get list of turn restriction exceptions

src/extractor/scripting_environment.cpp

@@ -8,6 +8,7 @@
 #include "extractor/raster_source.hpp"
 #include "extractor/profile_properties.hpp"
 #include "util/lua_util.hpp"
+#include "util/make_unique.hpp"
 #include "util/exception.hpp"
 #include "util/simple_logger.hpp"
 #include "util/typedefs.hpp"
@@ -52,10 +53,6 @@ int luaErrorCallback(lua_State *state)
 }
 }
 
-ScriptingEnvironment::Context::Context() : state(luaL_newstate()) {}
-
-ScriptingEnvironment::Context::~Context() { lua_close(state); }
-
 ScriptingEnvironment::ScriptingEnvironment(const std::string &file_name) : file_name(file_name)
 {
     util::SimpleLogger().Write() << "Using script " << file_name;
@@ -73,8 +70,7 @@ void ScriptingEnvironment::InitContext(ScriptingEnvironment::Context &context)
 
     // Add our function to the state's global scope
     luabind::module(context.state)
-        [luabind::def("print", util::LUA_print<std::string>),
-         luabind::def("durationIsValid", durationIsValid),
+        [luabind::def("durationIsValid", durationIsValid),
          luabind::def("parseDuration", parseDuration),
          luabind::class_<TravelMode>("mode")
              .enum_("enums")[luabind::value("inaccessible", TRAVEL_MODE_INACCESSIBLE),
@@ -176,8 +172,7 @@ ScriptingEnvironment::Context &ScriptingEnvironment::GetContex()
     auto &ref = script_contexts.local(initialized);
     if (!initialized)
     {
-        std::shared_ptr<Context> state = std::make_shared<Context>();
-        ref = state;
+        ref = util::make_unique<Context>();
         InitContext(*ref);
     }
     luabind::set_pcall_callback(&luaErrorCallback);

unit_tests/mocks/mock_datafacade.hpp

@@ -103,6 +103,7 @@ class MockDataFacadeT final : public osrm::engine::datafacade::BaseDataFacade<Ed
     std::string get_name_for_id(const unsigned /* name_id */) const { return ""; }
     std::size_t GetCoreSize() const { return 0; }
     std::string GetTimestamp() const { return ""; }
+    bool GetUTurnsDefault() const override { return true; }
 };
 
 using MockDataFacade = MockDataFacadeT<contractor::QueryEdge::EdgeData>;