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authorSimon Peyton Jones <simonpj@microsoft.com>2014-12-23 15:22:56 +0000
committerSimon Peyton Jones <simonpj@microsoft.com>2014-12-23 15:22:56 +0000
commit56b9e6bcef33612b40d3f93f170397eff77411eb (patch)
tree542cafd3f6ef950f58da095cbd85c835dc822809 /haddock-api/src/Haddock/Interface/AttachInstances.hs
parent45acead293f9fc18e984d2e83d137809359d506d (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.hs16
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 1341e57f..080de6ff 100644
--- a/haddock-api/src/Haddock/Interface/AttachInstances.hs
+++ b/haddock-api/src/Haddock/Interface/AttachInstances.hs
@@ -80,7 +80,7 @@ attachToExportItem expInfo iface ifaceMap instIfaceMap export =
, let opaque = isTypeHidden expInfo (fi_rhs i)
]
cls_insts = [ (synifyInstHead i, instLookup instDocMap n iface ifaceMap instIfaceMap)
- | 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
]
@@ -117,20 +117,6 @@ 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]))