type and data families aren't handled well

[dmwit]

For the following Haskell file:

type family A
type instance B = C
data family D
data instance E = F

class G a where
	type H a
	data I a

instance J a where
	type K a = L
	data M a = N

I expect to find tags for A, B, D, E, F, G, H, I, J, K, M, and N (but not C or L). This is what I actually get:

B	test.hs	2
F	test.hs	4
G	test.hs	6
G	test.hs	6
H	test.hs	7
I	test.hs	8
family	test.hs	1
family	test.hs	3
instance	test.hs	2
instance	test.hs	4
instance	test.hs	10

[jhenahan]

Type families are utterly unsupported at the moment, but I’m hoping to revamp the current parsing code, which should give a little more flexibility for dealing with these. I’m fairly sure it just gives up after the word type, so I’ll have to add a case to handle the extra stuff.

Related: if I get around to playing with the GHC lexer, a version supporting only >8.4 should support these pretty immediately.