enum brands?

[Ian Denhardt]

Hey all,

I was looking at schema.capnp, and noticed that the enum variant of the
Type struct has a brand field. This doesn't make sense to me: unless I'm
missing something, enums can't contain pointers, so it doesn't make
sense to have type parameters on an enum. What is this field for?

-Ian

[Kenton Varda]

I probably did it for consistency. It's true that, at least at present, it's not in any way meaningful for an enum to be parameterized. Moreover, you cannot declare parameters in an enum declaration. However, an enum could be nested within a parent scope that is parameterized, and in theory everything within the scope is subject to those parameters -- but indeed, since an enum type has no opportunity to refer to any parameter in its definition, it is meaningless in practice.

-Kenton

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