Support `OverloadedRecordDot`

[ocharles]

Right now tree-sitter-haskell parses foo.bar as if it's foo . bar - that is, the composition of foo and bar functions with the infix . operator. If -XOverloadedRecordDot is on, this should parse as accessing the field bar of the expression foo.

[tek]

We can't parse conditioned on extensions, but since the dot is already whitespace sensitive, I think it makes sense to default to parsing a projection for the no-whitespace case when the preceding expression is not a conid. A cursory glance at the grammar suggests that this requires quite a bit of rearrangement of rules, so this is an opportunity to clean up a bit 🙂

[ocharles]

Fair enough! Note that you probably also want to parse (.foo) specially, too.

[tek]

noted!

[tek]

please take a look, @ocharles : https://github.com/tree-sitter/tree-sitter-haskell/pull/98

[ocharles]

Thanks, I'm just rebuild Helix with this now - I'll report back!

[ocharles]

Neato!

[tek]

cool 🙂 let's merge it then

[ocharles]

Yep, I think everything is good here