[android] Move conversion code to .cpp files

1 files changed, 30 insertions, 0 deletions

diff --git a/platform/android/src/style/conversion/url_or_tileset.cpp b/platform/android/src/style/conversion/url_or_tileset.cpp
new file mode 100644
index 0000000000..2ec5856751
--- /dev/null
+++ b/platform/android/src/style/conversion/url_or_tileset.cpp
@@ -0,0 +1,30 @@
+#include "url_or_tileset.hpp"
+#include "../android_conversion.hpp"
+
+#include <mbgl/style/conversion.hpp>
+#include <mbgl/style/conversion/tileset.hpp>
+
+namespace mbgl {
+namespace android {
+
+// This conversion is expected not to fail because it's used only in contexts where
+// the value was originally a String or TileSet object on the Java side. If it fails
+// to convert, it's a bug in our serialization or Java-side static typing.
+variant<std::string, Tileset> convertURLOrTileset(mbgl::android::Value&& value) {
+    using namespace mbgl::style::conversion;
+
+    const Convertible convertible(std::move(value));
+    if (isObject(convertible)) {
+        Error error;
+        optional<Tileset> tileset = convert<Tileset>(convertible, error);
+        if (!tileset) {
+            throw std::logic_error(error.message);
+        }
+        return { *tileset };
+    } else {
+        return { *toString(convertible) };
+    }
+}
+
+}
+}