[core] Immutable Impls

1 files changed, 13 insertions, 4 deletions

diff --git a/include/mbgl/style/sources/vector_source.hpp b/include/mbgl/style/sources/vector_source.hpp
index 8626ce160a..6f16974b40 100644
--- a/include/mbgl/style/sources/vector_source.hpp
+++ b/include/mbgl/style/sources/vector_source.hpp
@@ -5,23 +5,32 @@
 #include <mbgl/util/variant.hpp>
 
 namespace mbgl {
+
+class AsyncRequest;
+
 namespace style {
 
 class VectorSource : public Source {
 public:
     VectorSource(std::string id, variant<std::string, Tileset> urlOrTileset);
+    ~VectorSource() final;
 
+    const variant<std::string, Tileset>& getURLOrTileset() const;
     optional<std::string> getURL() const;
 
-    // Private implementation
-
     class Impl;
-    Impl* const impl;
+    const Impl& impl() const;
+
+    void loadDescription(FileSource&) final;
+
+private:
+    const variant<std::string, Tileset> urlOrTileset;
+    std::unique_ptr<AsyncRequest> req;
 };
 
 template <>
 inline bool Source::is<VectorSource>() const {
-    return type == SourceType::Vector;
+    return getType() == SourceType::Vector;
 }
 
 } // namespace style