[core] AnnotationTileLayer vends its own name (#5163)

Fixes #5159.

4 files changed, 11 insertions, 3 deletions

diff --git a/src/mbgl/annotation/annotation_manager.cpp b/src/mbgl/annotation/annotation_manager.cpp
index 1febc757a4..e5f43eb3b6 100644
--- a/src/mbgl/annotation/annotation_manager.cpp
+++ b/src/mbgl/annotation/annotation_manager.cpp
@@ -90,7 +90,7 @@ std::unique_ptr<AnnotationTile> AnnotationManager::getTile(const CanonicalTileID
 
     AnnotationTileLayer& pointLayer = *tile->layers.emplace(
         PointLayerID,
-        std::make_unique<AnnotationTileLayer>()).first->second;
+        std::make_unique<AnnotationTileLayer>(PointLayerID)).first->second;
 
     LatLngBounds tileBounds(tileID);
 
diff --git a/src/mbgl/annotation/annotation_tile.cpp b/src/mbgl/annotation/annotation_tile.cpp
index 8f754ed6da..ba4b69108c 100644
--- a/src/mbgl/annotation/annotation_tile.cpp
+++ b/src/mbgl/annotation/annotation_tile.cpp
@@ -21,6 +21,9 @@ optional<Value> AnnotationTileFeature::getValue(const std::string& key) const {
     return optional<Value>();
 }
 
+AnnotationTileLayer::AnnotationTileLayer(const std::string &name_)
+    : name(name_) {}
+
 util::ptr<GeometryTileLayer> AnnotationTile::getLayer(const std::string& name) const {
     auto it = layers.find(name);
     if (it != layers.end()) {
diff --git a/src/mbgl/annotation/annotation_tile.hpp b/src/mbgl/annotation/annotation_tile.hpp
index 5943eb11c9..d607d563d4 100644
--- a/src/mbgl/annotation/annotation_tile.hpp
+++ b/src/mbgl/annotation/annotation_tile.hpp
@@ -24,11 +24,16 @@ public:
 
 class AnnotationTileLayer : public GeometryTileLayer {
 public:
+    AnnotationTileLayer(const std::string&);
+
     std::size_t featureCount() const override { return features.size(); }
     util::ptr<const GeometryTileFeature> getFeature(std::size_t i) const override { return features[i]; }
-    std::string getName() const override { return ""; };
+    std::string getName() const override { return name; };
 
     std::vector<util::ptr<const AnnotationTileFeature>> features;
+
+private:
+    std::string name;
 };
 
 class AnnotationTile : public GeometryTile {
diff --git a/src/mbgl/annotation/shape_annotation_impl.cpp b/src/mbgl/annotation/shape_annotation_impl.cpp
index 9b9ea3bf26..3afc6044d7 100644
--- a/src/mbgl/annotation/shape_annotation_impl.cpp
+++ b/src/mbgl/annotation/shape_annotation_impl.cpp
@@ -119,7 +119,7 @@ void ShapeAnnotationImpl::updateTile(const CanonicalTileID& tileID, AnnotationTi
         return;
 
     AnnotationTileLayer& layer = *tile.layers.emplace(layerID,
-        std::make_unique<AnnotationTileLayer>()).first->second;
+        std::make_unique<AnnotationTileLayer>(layerID)).first->second;
 
     for (auto& shapeFeature : shapeTile.features) {
         FeatureType featureType = FeatureType::Unknown;