My current POV is that I think this feature is far far more limited than I originally thought -- and hence unattractive. (I’ve posted on the discussion thread to that effect.)
I’m willing to be educated!
Simon
From: ghc-steering-committee On Behalf Of Sandy Maguire
Sent: 11 July 2019 20:10
To: ghc-steering-committee@haskell.org
Subject: [ghc-steering-committee] Type annotated quoters (#125) --- recommendation: accept
Hi all,
Proposal 125 is on the topic of making quasiquoters which annotate the type of expression they produce. For example:
qq :: TQuasiQuoter Int
which would work when used via
foo :: Int
foo = [qq|| blah ||]
but would be a type error (even before expanding the splice) in the context of
bar :: String
bar = [qq|| blah ||]
I'm in favor of this proposal. It's small, a natural extension to typed expressions+quasiquoters, and solves the very real problem of statically verifying literals at compile time.
The proposal is here: https://github.com/ghc-proposals/ghc-proposals/pull/125
and my recommendation is: https://github.com/ghc-proposals/ghc-proposals/pull/125#issuecomment-5106120...
I have recommend a syntactic change that is *not* present in the original proposal text. It seems unfair to make the proposer jump through more hoops after a year of inactivity on this proposal.
As usual, silence will be considered assent!
Best,
Sandy
