NullPointerException when parsing values set to null

[alfredomusumeci]

Hello,

A NullPointerException is thrown whenever a null value is present in a YAML file, more specifically: Exception in thread "main" java.lang.NullPointerException: Cannot invoke "Object.getClass()" because "input" is null.

The following is a simple case to reproduce the error:

apiVersion: dummyApi
kind: CustomResourceDefinition
metadata:
  name: null

If I then use the function allFromPath to parse the above YAML file, the error is thrown.

The proposed solution has to do with the method handling the parsing itself, more specifically:

    public static Iterable<YAMLValue> allFromPath(Path path) {
        try (var inputStream = Files.newInputStream(path)) {
            return stream(parser.get().loadAll(inputStream))
                    .map(YAMLValueImpl::new)
                    .collect(Collectors.toList());
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

I suppose the error arises from the line YAMLValueImpl:new.