package io.atlassian.fugue.optic.std;
   
   import io.atlassian.fugue.Either;
   import io.atlassian.fugue.Option;
   import io.atlassian.fugue.optic.Iso;
   import io.atlassian.fugue.optic.PPrism;
   import io.atlassian.fugue.optic.Prism;
   
   import java.util.Optional;
  
  import static io.atlassian.fugue.Either.left;
  import static io.atlassian.fugue.Option.none;
  import static io.atlassian.fugue.optic.PPrism.pPrism;
  
  public class OptionOptics {
  
    private OptionOptics() {}
  
    public static <A, B> PPrism<Option<A>, Option<B>, A, B> pSome() {
      return pPrism(oa -> oa.fold(() -> left(none()), Either::right), Option::some);
    }
  
    public static <A> Prism<Option<A>, A> some() {
      return new Prism<>(pSome());
    }
  
    public static <A> Iso<Option<A>, Optional<A>> optionToOptional() {
      return Iso.iso(Option::toOptional, Option::fromOptional);
    }
  
  }