diff options
| author | Simon Peyton Jones <simonpj@microsoft.com> | 2014-12-23 15:22:56 +0000 |
|---|---|---|
| committer | Matthew Pickering <matthewtpickering@gmail.com> | 2015-12-14 15:10:56 +0000 |
| commit | 7e49f55580ffb701944603983b41873649bb35f6 (patch) | |
| tree | 31780a1e04cb47afc7bf1ad9d7b2da920fe9b240 /haddock-api/src/Haddock/Interface/AttachInstances.hs | |
| parent | 33e89b2b4719f0dd1cd416c7d20d610be504910c (diff) | |
Eliminate instanceHead' in favour of GHC's instanceSig
This is made possible by the elimination of "silent superclass
parameters" in GHC
Diffstat (limited to 'haddock-api/src/Haddock/Interface/AttachInstances.hs')
| -rw-r--r-- | haddock-api/src/Haddock/Interface/AttachInstances.hs | 16 |
1 files changed, 1 insertions, 15 deletions
diff --git a/haddock-api/src/Haddock/Interface/AttachInstances.hs b/haddock-api/src/Haddock/Interface/AttachInstances.hs index e2fd24ee..21569374 100644 --- a/haddock-api/src/Haddock/Interface/AttachInstances.hs +++ b/haddock-api/src/Haddock/Interface/AttachInstances.hs @@ -82,7 +82,7 @@ attachToExportItem expInfo iface ifaceMap instIfaceMap export = , let opaque = isTypeHidden expInfo (fi_rhs i) ] cls_insts = [ (synifyInstHead i, instLookup instDocMap n iface ifaceMap instIfaceMap, spanName n (synifyInstHead i) (L eSpan (tcdName d))) - | let is = [ (instanceHead' i, getName i) | i <- cls_instances ] + | let is = [ (instanceSig i, getName i) | i <- cls_instances ] , (i@(_,_,cls,tys), n) <- sortBy (comparing $ first instHead) is , not $ isInstanceHidden expInfo cls tys ] @@ -131,20 +131,6 @@ instLookup f name iface ifaceMap instIfaceMap = iface' <- Map.lookup (nameModule name) ifaceMaps Map.lookup name (f iface') --- | Like GHC's 'instanceHead' but drops "silent" arguments. -instanceHead' :: ClsInst -> ([TyVar], ThetaType, Class, [Type]) -instanceHead' ispec = (tvs, dropSilentArgs dfun theta, cls, tys) - where - dfun = is_dfun ispec - (tvs, cls, tys) = instanceHead ispec - (_, theta, _) = tcSplitSigmaTy (idType dfun) - --- | Drop "silent" arguments. See GHC Note [Silent superclass --- arguments]. -dropSilentArgs :: DFunId -> ThetaType -> ThetaType -dropSilentArgs dfun theta = drop (dfunNSilent dfun) theta - - -- | Like GHC's getInfo but doesn't cut things out depending on the -- interative context, which we don't set sufficiently anyway. getAllInfo :: GhcMonad m => Name -> m (Maybe (TyThing,Fixity,[ClsInst],[FamInst])) |