HLTech / pact-gen

public class TypeExtractor {

    private TypeExtractor() {}

    public static List<Class<?>> extractParameterTypesFromType(Type type) {

        if (type == null) {

            return new ArrayList<>();

        }

        if (type instanceof ParameterizedType) {

            ParameterizedType paramType = (ParameterizedType)type;

            return Arrays.stream(paramType.getActualTypeArguments())

                .map(a -> (Class<?>)a)

                .collect(Collectors.toList());

        }

        if (((Class<?>)type).isArray()) {

            return Lists.newArrayList(((Class<?>)type).getComponentType());

        }

        return Lists.newArrayList();