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#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>
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
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