[Haskell-cafe] GLR parser for Haskell?

Benjamin Redelings benjamin.redelings at gmail.com
Tue Apr 20 10:56:13 UTC 2021

Thanks, that is interesting.  I see this is a different type of grammar 
than in Parser.y, in that (for example) it does not have any actions on 
the rules.

I'm still curious about why the GHC parser does not use a grammar that 
is closer to the language grammar.  Is this mostly for historical 
reasons?  Are GLR parsers too slow?  I don't know what fraction of the 
compilation time is spent in parsing, but would suspect it is not that much.


On 4/15/21 11:55 AM, Georgi Lyubenov wrote:
> Hi!
> I think the updated tree sitter grammar might be relevant to you -Â 
> https://github.com/tree-sitter/tree-sitter-haskell 
> <https://github.com/tree-sitter/tree-sitter-haskell>
> Cheers,
> ======
> Georgi

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