Question about ENUM_VALUE directive location

[sungam3r]

Do I understand correctly that ENUM_VALUE location (TypeSystemDirectiveLocation) works for EnumValue term and may be applied to both examples?

enum Color {
  GREEN @myDirective
  RED
}

input Data {
  color: Color = RED @myDirective
}

[benjie]

I believe it relates specifically to an enum value definition (i.e. the former but not the latter) but from a quick glance I can't see spec text that specifically nails this down.

[sungam3r]

I too. If one strictly follows grammar, then the directive can be used in both cases. This affects validation rules.

[benjie]

If one strictly follows grammar, then the directive can be used in both cases.

I'm not sure this tracks, ENUM_VALUE is not actually defined and has no link to grammar (EnumValue is a different entity). What we're missing is definitions of what these constants actually mean, perhaps in the list defined at https://github.com/graphql/graphql-spec/blob/7908822d4cbae5ad7136437ca577e8bc56f7efab/spec/Section%204%20--%20Introspection.md#the-__directive-type