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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">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.)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I’m willing to be educated!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Simon<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> ghc-steering-committee <ghc-steering-committee-bounces@haskell.org>
<b>On Behalf Of </b>Sandy Maguire<br>
<b>Sent:</b> 11 July 2019 20:10<br>
<b>To:</b> ghc-steering-committee@haskell.org<br>
<b>Subject:</b> [ghc-steering-committee] Type annotated quoters (#125) --- recommendation: accept<o:p></o:p></span></p>
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Hi all,<o:p></o:p></p>
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<o:p> </o:p></p>
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Proposal 125 is on the topic of making quasiquoters which annotate the type of expression they produce. For example:<o:p></o:p></p>
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<o:p> </o:p></p>
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qq :: TQuasiQuoter Int<o:p></o:p></p>
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<o:p> </o:p></p>
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which would work when used via<o:p></o:p></p>
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<o:p> </o:p></p>
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foo :: Int<o:p></o:p></p>
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foo = [qq|| blah ||]<o:p></o:p></p>
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<o:p> </o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:6.0pt;margin-right:0cm;margin-bottom:6.0pt;margin-left:0cm">
but would be a type error (even before expanding the splice) in the context of<o:p></o:p></p>
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<o:p> </o:p></p>
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bar :: String<o:p></o:p></p>
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bar = [qq|| blah ||]<o:p></o:p></p>
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<o:p> </o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:6.0pt;margin-right:0cm;margin-bottom:6.0pt;margin-left:0cm">
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.<o:p></o:p></p>
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<o:p> </o:p></p>
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The proposal is here: <a href="https://github.com/ghc-proposals/ghc-proposals/pull/125">
https://github.com/ghc-proposals/ghc-proposals/pull/125</a><o:p></o:p></p>
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and my recommendation is: <a href="https://github.com/ghc-proposals/ghc-proposals/pull/125#issuecomment-510612026">
https://github.com/ghc-proposals/ghc-proposals/pull/125#issuecomment-510612026</a><o:p></o:p></p>
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<o:p> </o:p></p>
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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.<o:p></o:p></p>
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<o:p> </o:p></p>
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As usual, silence will be considered assent!<o:p></o:p></p>
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<o:p> </o:p></p>
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Best,<o:p></o:p></p>
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Sandy<o:p></o:p></p>
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