Rename Gradle targets Android (#2226)

platform/android/MapLibreAndroid/src/cpp/conversion/conversion.hpp

@@ -0,0 +1,50 @@
+#pragma once
+
+#include <mbgl/util/variant.hpp>
+
+#include <jni/jni.hpp>
+
+#include <string>
+
+namespace mbgl {
+namespace android {
+namespace conversion {
+
+struct Error {
+    std::string message;
+};
+
+template <class T>
+class Result : private variant<T, Error> {
+public:
+    using variant<T, Error>::variant;
+
+    explicit operator bool() const { return this->template is<T>(); }
+
+    T& operator*() {
+        assert(this->template is<T>());
+        return this->template get<T>();
+    }
+
+    const T& operator*() const {
+        assert(this->template is<T>());
+        return this->template get<T>();
+    }
+
+    const Error& error() const {
+        assert(this->template is<Error>());
+        return this->template get<Error>();
+    }
+};
+
+template <class T, class V, class Enable = void>
+struct Converter;
+
+template <class T, typename V, class... Args>
+Result<T> convert(jni::JNIEnv& env, const V& value, Args&&... args) {
+    return Converter<T, V>()(env, value, std::forward<Args>(args)...);
+}
+
+} // namespace conversion
+} // namespace android
+} // namespace mbgl