1. 14 Aug, 2013 5 commits
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    • eir@cis.upenn.edu's avatar
      Refactor checking for GADT-like datacons' return types · 3cd1360f
      eir@cis.upenn.edu authored
      This check is somewhat subtle. See Note [Checking GADT return types]
      in TcTyClsDecls. The new plan is to check *before* desugaring the type
      from HsType to Type. This avoids problems with the pattern-match
      in rejigConRes.
      
      As a nice side benefit to this, I discovered that Template Haskell
      splices were a little conservative in their treatment of valid data
      constructors. (For example, a kind signature in the return type caused
      failure.) Now, the TH code uses exactly the same function as the
      "real" code, which is nice. See hsTyGetAppHead_maybe in HsTypes.
      3cd1360f
  10. 02 Aug, 2013 3 commits
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