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| author | Alfredo Di Napoli <alfredo@well-typed.com> | 2021-01-06 08:12:04 +0100 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2021-02-01 14:06:11 -0500 |
| commit | ddc2a7595a28b6098b6aab61bc830f2296affcdc (patch) | |
| tree | 2863cb09e18f9d2cba1ff8a4f78b6a2f6431837f /compiler/GHC/Tc/Deriv | |
| parent | 5464845a012bf174cfafe03aaeb2e47150e7efb5 (diff) | |
| download | haskell-ddc2a7595a28b6098b6aab61bc830f2296affcdc.tar.gz | |
Remove ErrDoc and MsgDoc
This commit boldly removes the ErrDoc and the MsgDoc from the codebase.
The former was introduced with the only purpose of classifying errors
according to their importance, but a similar result can be obtained just
by having a simple [SDoc], and placing bullets after each of them.
On top of that I have taken the perhaps controversial decision to also
banish MsgDoc, as it was merely a type alias over an SDoc and as such it wasn't
offering any extra type safety. Granted, it was perhaps making type
signatures slightly more "focused", but at the expense of cognitive
burden: if it's really just an SDoc, let's call it with its proper name.
Diffstat (limited to 'compiler/GHC/Tc/Deriv')
| -rw-r--r-- | compiler/GHC/Tc/Deriv/Infer.hs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/Tc/Deriv/Infer.hs b/compiler/GHC/Tc/Deriv/Infer.hs index d65564d1da..5ce54339c6 100644 --- a/compiler/GHC/Tc/Deriv/Infer.hs +++ b/compiler/GHC/Tc/Deriv/Infer.hs @@ -700,7 +700,7 @@ simplifyInstanceContexts infer_specs where the_pred = mkClassPred clas inst_tys -derivInstCtxt :: PredType -> MsgDoc +derivInstCtxt :: PredType -> SDoc derivInstCtxt pred = text "When deriving the instance for" <+> parens (ppr pred) |