Better resolution results

[JonathanxD]

Currently there are no way to know if the resolution returned false because failed to resolve the type or returned false because type X is not assignable to Y.

Solution

1

Returns EitherObjBoolean<Exception> (which should be added to JonathanxD/JwIUtils as specialized version of Either ). The left value (Exception) may be returned in the case which type resolution fails, and the right when the type was resolved and the returned value is exactly the response of operation (in other words, the right value is only available in the cases that resolution does not fail).

2

Returns OptBoolean, then, None means not resolved, and Some resolved with result.