Question/feature request: how can I init a custom exception with a class rather than string?

[tasn]

Hey,

I'm currently doing something like this to throw custom exceptions:

foreign_typemap!(
    ($p:r_type) <T> Result<T> => swig_i_type!(T) {
        $out = match $p {
            Ok(x) => {
                swig_from_rust_to_i_type!(T, x, ret)
                ret
            }
            Err(err) => {
                let msg = err.to_string();
                let exception_class = match err {
                    // ...
                    Error::PermissionDenied(_) => swig_jni_find_class!(ETEBASE_PermissionDeniedException, "com/etebase/client/exceptions/PermissionDeniedException"),
                    // ...
                    _ => swig_jni_find_class!(ETEBASE_EtebaseException, "com/etebase/client/exceptions/EtebaseException"),
                };
                jni_throw(env, exception_class, &msg);
                return <swig_i_type!(T)>::jni_invalid_value();
            }
        };
    };
    ($p:f_type, unique_prefix="/*etebase::error::Result<swig_subst_type!(T)>*/") => "/*etebase::error::Result<swig_subst_type!(T)>*/swig_f_type!(T)"
        "swig_foreign_from_i_type!(T, $p)";
);

As you can see, I'm getting the error's string and passing that, and my class to jni_throw. I'd like however to pass the error object itself to Java so that I can have more advanced queries on it. Is it at all possible? If so how do I do it?

Thanks!