Replace boost::hash by std::hash (#6892)

* Replace boost::hash by std::hash

* Fix formatting

* Update CHANGELOG.md

CHANGELOG.md

@@ -19,6 +19,7 @@
     - NodeJS:
       - CHANGED: Use node-api instead of NAN. [#6452](https://github.com/Project-OSRM/osrm-backend/pull/6452)
     - Misc:
+      - CHANGED: Replace boost::hash by std::hash [#6892](https://github.com/Project-OSRM/osrm-backend/pull/6892)
       - CHANGED: Partial fix migration from boost::optional to std::optional [#6551](https://github.com/Project-OSRM/osrm-backend/issues/6551)
       - CHANGED: Update Conan Boost version to 1.85.0. [#6868](https://github.com/Project-OSRM/osrm-backend/pull/6868)
       - FIXED: Fix an error in a RouteParameters AnnotationsType operator overload. [#6646](https://github.com/Project-OSRM/osrm-backend/pull/6646)

include/extractor/extractor_callbacks.hpp

@@ -3,11 +3,9 @@
 
 #include "extractor/class_data.hpp"
 #include "extractor/turn_lane_types.hpp"
+#include "util/std_hash.hpp"
 #include "util/typedefs.hpp"
 
-#include <boost/functional/hash.hpp>
-#include <boost/optional/optional_fwd.hpp>
-
 #include <string>
 #include <unordered_map>
 
@@ -18,25 +16,6 @@ class Way;
 class Relation;
 } // namespace osmium
 
-namespace std
-{
-template <> struct hash<std::tuple<std::string, std::string, std::string, std::string, std::string>>
-{
-    std::size_t operator()(
-        const std::tuple<std::string, std::string, std::string, std::string, std::string> &mk)
-        const noexcept
-    {
-        std::size_t seed = 0;
-        boost::hash_combine(seed, std::get<0>(mk));
-        boost::hash_combine(seed, std::get<1>(mk));
-        boost::hash_combine(seed, std::get<2>(mk));
-        boost::hash_combine(seed, std::get<3>(mk));
-        boost::hash_combine(seed, std::get<4>(mk));
-        return seed;
-    }
-};
-} // namespace std
-
 namespace osrm::extractor
 {
 

include/extractor/maneuver_override.hpp

@@ -8,11 +8,13 @@
 #include "turn_path.hpp"
 #include "util/integer_range.hpp"
 #include "util/log.hpp"
+#include "util/std_hash.hpp"
 #include "util/vector_view.hpp"
-#include <algorithm>
-#include <boost/functional/hash.hpp>
+
 #include <mapbox/variant.hpp>
 
+#include <algorithm>
+
 namespace osrm::extractor
 {
 
@@ -147,7 +149,6 @@ struct UnresolvedManeuverOverride
 namespace std
 {
 template <> struct hash<osrm::extractor::NodeBasedTurn>
-
 {
     using argument_type = osrm::extractor::NodeBasedTurn;
     using result_type = std::size_t;
@@ -155,9 +156,9 @@ template <> struct hash<osrm::extractor::NodeBasedTurn>
     {
 
         std::size_t seed = 0;
-        boost::hash_combine(seed, s.from);
-        boost::hash_combine(seed, s.via);
-        boost::hash_combine(seed, s.to);
+        hash_combine(seed, s.from);
+        hash_combine(seed, s.via);
+        hash_combine(seed, s.to);
 
         return seed;
     }

include/extractor/traffic_signals.hpp

@@ -1,10 +1,11 @@
 #ifndef OSRM_EXTRACTOR_TRAFFIC_SIGNALS_HPP
 #define OSRM_EXTRACTOR_TRAFFIC_SIGNALS_HPP
 
+#include "util/std_hash.hpp"
 #include "util/typedefs.hpp"
 
-#include <boost/functional/hash.hpp>
 #include <unordered_set>
+#include <utility>
 
 namespace osrm::extractor
 {
@@ -12,8 +13,7 @@ namespace osrm::extractor
 struct TrafficSignals
 {
     std::unordered_set<NodeID> bidirectional_nodes;
-    std::unordered_set<std::pair<NodeID, NodeID>, boost::hash<std::pair<NodeID, NodeID>>>
-        unidirectional_segments;
+    std::unordered_set<std::pair<NodeID, NodeID>> unidirectional_segments;
 
     inline bool HasSignal(NodeID from, NodeID to) const
     {

include/extractor/turn_lane_types.hpp

@@ -3,10 +3,9 @@
 
 #include "util/concurrent_id_map.hpp"
 #include "util/integer_range.hpp"
+#include "util/std_hash.hpp"
 #include "util/typedefs.hpp"
 
-#include <boost/functional/hash.hpp>
-
 #include <bitset>
 #include <cstddef>
 #include <cstdint>
@@ -54,19 +53,7 @@ const constexpr Mask merge_to_right = 1u << 10u;
 
 using TurnLaneDescription = std::vector<TurnLaneType::Mask>;
 
-// hash function for TurnLaneDescription
-struct TurnLaneDescription_hash
-{
-    std::size_t operator()(const TurnLaneDescription &lane_description) const
-    {
-        std::size_t seed = 0;
-        boost::hash_range(seed, lane_description.begin(), lane_description.end());
-        return seed;
-    }
-};
-
-using LaneDescriptionMap =
-    util::ConcurrentIDMap<TurnLaneDescription, LaneDescriptionID, TurnLaneDescription_hash>;
+using LaneDescriptionMap = util::ConcurrentIDMap<TurnLaneDescription, LaneDescriptionID>;
 
 using TurnLanesIndexedArray =
     std::tuple<std::vector<std::uint32_t>, std::vector<TurnLaneType::Mask>>;

include/util/guidance/bearing_class.hpp

@@ -1,15 +1,14 @@
 #ifndef OSRM_UTIL_GUIDANCE_BEARING_CLASS_HPP_
 #define OSRM_UTIL_GUIDANCE_BEARING_CLASS_HPP_
 
+#include "util/std_hash.hpp"
+#include "util/typedefs.hpp"
+
 #include <cstddef>
 #include <cstdint>
 #include <functional>
 #include <vector>
 
-#include <boost/functional/hash.hpp>
-
-#include "util/typedefs.hpp"
-
 namespace osrm::util::guidance
 {
 class BearingClass;
@@ -62,7 +61,10 @@ namespace std
 inline size_t hash<::osrm::util::guidance::BearingClass>::operator()(
     const ::osrm::util::guidance::BearingClass &bearing_class) const
 {
-    return boost::hash_value(bearing_class.available_bearings);
+    std::size_t value = 0;
+    hash_range(
+        value, bearing_class.available_bearings.cbegin(), bearing_class.available_bearings.cend());
+    return value;
 }
 } // namespace std
 

include/util/guidance/turn_lanes.hpp

@@ -1,36 +1,22 @@
 #ifndef OSRM_UTIL_GUIDANCE_TURN_LANES_HPP
 #define OSRM_UTIL_GUIDANCE_TURN_LANES_HPP
 
+#include "util/concurrent_id_map.hpp"
+#include "util/std_hash.hpp"
+#include "util/typedefs.hpp"
+
 #include <cstddef>
 #include <cstdint>
 #include <functional>
 #include <unordered_map>
 #include <vector>
 
-#include "util/concurrent_id_map.hpp"
-#include "util/typedefs.hpp"
-
-#include <boost/functional/hash.hpp>
-
 namespace osrm::util::guidance
 {
 class LaneTuple;
 class LaneTupleIdPair;
 } // namespace osrm::util::guidance
 
-namespace std
-{
-template <> struct hash<::osrm::util::guidance::LaneTuple>
-{
-    inline std::size_t operator()(const ::osrm::util::guidance::LaneTuple &bearing_class) const;
-};
-template <> struct hash<::osrm::util::guidance::LaneTupleIdPair>
-{
-    inline std::size_t
-    operator()(const ::osrm::util::guidance::LaneTupleIdPair &bearing_class) const;
-};
-} // namespace std
-
 namespace osrm::util::guidance
 {
 
@@ -61,14 +47,6 @@ class LaneTuple
 
     LaneID lanes_in_turn;
     LaneID first_lane_from_the_right; // is INVALID_LANEID when no lanes present
-
-    friend std::size_t hash_value(const LaneTuple &tup)
-    {
-        std::size_t seed{0};
-        boost::hash_combine(seed, tup.lanes_in_turn);
-        boost::hash_combine(seed, tup.first_lane_from_the_right);
-        return seed;
-    }
 };
 
 class LaneTupleIdPair
@@ -78,18 +56,36 @@ class LaneTupleIdPair
     LaneDescriptionID second;
 
     bool operator==(const LaneTupleIdPair &other) const;
+};
 
-    friend std::size_t hash_value(const LaneTupleIdPair &pair)
+using LaneDataIdMap = ConcurrentIDMap<LaneTupleIdPair, LaneDataID>;
+
+} // namespace osrm::util::guidance
+
+namespace std
+{
+template <> struct hash<::osrm::util::guidance::LaneTuple>
+{
+    inline std::size_t operator()(const ::osrm::util::guidance::LaneTuple &lane_tuple) const
     {
         std::size_t seed{0};
-        boost::hash_combine(seed, pair.first);
-        boost::hash_combine(seed, pair.second);
+        hash_combine(seed, lane_tuple.lanes_in_turn);
+        hash_combine(seed, lane_tuple.first_lane_from_the_right);
         return seed;
     }
 };
 
-using LaneDataIdMap = ConcurrentIDMap<LaneTupleIdPair, LaneDataID, boost::hash<LaneTupleIdPair>>;
-
-} // namespace osrm::util::guidance
+template <> struct hash<::osrm::util::guidance::LaneTupleIdPair>
+{
+    inline std::size_t
+    operator()(const ::osrm::util::guidance::LaneTupleIdPair &lane_tuple_id_pair) const
+    {
+        std::size_t seed{0};
+        hash_combine(seed, lane_tuple_id_pair.first);
+        hash_combine(seed, lane_tuple_id_pair.second);
+        return seed;
+    }
+};
+} // namespace std
 
 #endif /* OSRM_UTIL_GUIDANCE_TURN_LANES_HPP */

include/util/std_hash.hpp

@@ -1,7 +1,11 @@
 #ifndef STD_HASH_HPP
 #define STD_HASH_HPP
 
+#include <cstddef>
 #include <functional>
+#include <tuple>
+#include <utility>
+#include <vector>
 
 // this is largely inspired by boost's hash combine as can be found in
 // "The C++ Standard Library" 2nd Edition. Nicolai M. Josuttis. 2012.
@@ -11,6 +15,14 @@ template <typename T> void hash_combine(std::size_t &seed, const T &val)
     seed ^= std::hash<T>()(val) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
 }
 
+template <typename It> void hash_range(std::size_t &seed, It first, const It last)
+{
+    for (; first != last; ++first)
+    {
+        hash_combine(seed, *first);
+    }
+}
+
 template <typename T> void hash_val(std::size_t &seed, const T &val) { hash_combine(seed, val); }
 
 template <typename T, typename... Types>
@@ -29,13 +41,39 @@ template <typename... Types> std::size_t hash_val(const Types &...args)
 
 namespace std
 {
+template <typename... T> struct hash<std::tuple<T...>>
+{
+    template <std::size_t... I>
+    static auto apply_tuple(const std::tuple<T...> &t, std::index_sequence<I...>)
+    {
+        std::size_t seed = 0;
+        return ((seed = hash_val(std::get<I>(t), seed)), ...);
+    }
+
+    auto operator()(const std::tuple<T...> &t) const
+    {
+        return apply_tuple(t, std::make_index_sequence<sizeof...(T)>());
+    }
+};
+
 template <typename T1, typename T2> struct hash<std::pair<T1, T2>>
 {
-    size_t operator()(const std::pair<T1, T2> &pair) const
+    std::size_t operator()(const std::pair<T1, T2> &pair) const
     {
         return hash_val(pair.first, pair.second);
     }
 };
+
+template <typename T> struct hash<std::vector<T>>
+{
+    auto operator()(const std::vector<T> &lane_description) const
+    {
+        std::size_t seed = 0;
+        hash_range(seed, lane_description.begin(), lane_description.end());
+        return seed;
+    }
+};
+
 } // namespace std
 
 #endif // STD_HASH_HPP

include/util/trigonometry_table.hpp

@@ -364,7 +364,6 @@ const constexpr double SCALING_FACTOR = 4. / boost::math::constants::pi<double>(
 
 inline double atan2_lookup(double y, double x)
 {
-
     using namespace boost::math::constants;
 
     if (std::abs(x) < std::numeric_limits<double>::epsilon())

src/extractor/edge_based_graph_factory.cpp

@@ -19,7 +19,6 @@
 #include "util/timing_util.hpp"
 
 #include <boost/assert.hpp>
-#include <boost/functional/hash.hpp>
 #include <boost/numeric/conversion/cast.hpp>
 
 #include <algorithm>

src/extractor/extraction_containers.cpp

@@ -13,6 +13,7 @@
 #include "util/for_each_indexed.hpp"
 #include "util/for_each_pair.hpp"
 #include "util/log.hpp"
+#include "util/std_hash.hpp"
 #include "util/timing_util.hpp"
 
 #include <boost/assert.hpp>
@@ -955,8 +956,7 @@ void ExtractionContainers::PrepareTrafficSignals(
     TIMER_START(prepare_traffic_signals);
 
     std::unordered_set<NodeID> bidirectional;
-    std::unordered_set<std::pair<NodeID, NodeID>, boost::hash<std::pair<NodeID, NodeID>>>
-        unidirectional;
+    std::unordered_set<std::pair<NodeID, NodeID>> unidirectional;
 
     for (const auto &osm_node : bidirectional_signal_nodes)
     {

src/updater/updater.cpp

@@ -18,6 +18,7 @@
 #include "util/mmap_tar.hpp"
 #include "util/opening_hours.hpp"
 #include "util/static_rtree.hpp"
+#include "util/std_hash.hpp"
 #include "util/string_util.hpp"
 #include "util/timezones.hpp"
 #include "util/timing_util.hpp"
@@ -42,25 +43,6 @@
 #include <tuple>
 #include <vector>
 
-namespace std
-{
-template <typename T1, typename T2, typename T3> struct hash<std::tuple<T1, T2, T3>>
-{
-    size_t operator()(const std::tuple<T1, T2, T3> &t) const
-    {
-        return hash_val(std::get<0>(t), std::get<1>(t), std::get<2>(t));
-    }
-};
-
-template <typename T1, typename T2> struct hash<std::tuple<T1, T2>>
-{
-    size_t operator()(const std::tuple<T1, T2> &t) const
-    {
-        return hash_val(std::get<0>(t), std::get<1>(t));
-    }
-};
-} // namespace std
-
 namespace osrm::updater
 {
 namespace

third_party/vtzero/test/mvt-fixtures

@@ -1 +0,0 @@
-Subproject commit a351144a7aa6ca4b826295cd4454cd4ce3a6f71f

unit_tests/util/bearing.cpp

@@ -1,7 +1,6 @@
 #include "util/bearing.hpp"
 #include "util/typedefs.hpp"
 
-#include <boost/functional/hash.hpp>
 #include <boost/test/unit_test.hpp>
 
 BOOST_AUTO_TEST_SUITE(bearing_test)

unit_tests/util/static_rtree.cpp

@@ -5,12 +5,12 @@
 #include "util/coordinate_calculation.hpp"
 #include "util/exception.hpp"
 #include "util/rectangle.hpp"
+#include "util/std_hash.hpp"
 #include "util/typedefs.hpp"
 
 #include "../common/temporary_file.hpp"
 #include "mocks/mock_datafacade.hpp"
 
-#include <boost/functional/hash.hpp>
 #include <boost/test/unit_test.hpp>
 
 #include <cmath>
@@ -91,20 +91,6 @@ template <typename DataT> class LinearSearchNN
 
 template <unsigned NUM_NODES, unsigned NUM_EDGES> struct RandomGraphFixture
 {
-    struct TupleHash
-    {
-        using argument_type = std::pair<unsigned int, unsigned int>;
-        using result_type = std::size_t;
-
-        result_type operator()(const argument_type &t) const
-        {
-            std::size_t val{0};
-            boost::hash_combine(val, t.first);
-            boost::hash_combine(val, t.second);
-            return val;
-        }
-    };
-
     RandomGraphFixture()
     {
         std::mt19937 g(RANDOM_SEED);
@@ -121,7 +107,7 @@ template <unsigned NUM_NODES, unsigned NUM_EDGES> struct RandomGraphFixture
 
         std::uniform_int_distribution<> edge_udist(0, coords.size() - 1);
 
-        std::unordered_set<std::pair<unsigned, unsigned>, TupleHash> used_edges;
+        std::unordered_set<std::pair<unsigned, unsigned>> used_edges;
 
         while (edges.size() < NUM_EDGES)
         {

unit_tests/util/viewport.cpp

@@ -2,7 +2,6 @@
 
 using namespace osrm::util;
 
-#include <boost/functional/hash.hpp>
 #include <boost/test/unit_test.hpp>
 
 #include <iostream>