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Within LTS Haskell 24.65 (ghc-9.10.3)
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tyThingParent_maybe :: TyThing -> Maybe TyThingghc-lib-parser GHC.Types.TyThing tyThingParent_maybe x returns (Just p) when pprTyThingInContext should print a declaration for p (albeit with some "..." in it) when asked to show x It returns the *immediate* parent. So a datacon returns its tycon but the tycon could be the associated type of a class, so it in turn might have a parent.
plusMaybeUniqMap_C :: (a -> a -> Maybe a) -> UniqMap k a -> UniqMap k a -> UniqMap k aghc-lib-parser GHC.Types.Unique.Map No documentation available.
mapMaybeUniqSet_sameUnique :: (a -> Maybe b) -> UniqSet a -> UniqSet bghc-lib-parser GHC.Types.Unique.Set Like mapMaybe, but you must ensure the passed in function does not change the Unique.
anonPiTyBinderType_maybe :: PiTyBinder -> Maybe Typeghc-lib-parser GHC.Types.Var Extract a relevant type, if there is one.
isLocalId_maybe :: Var -> Maybe ExportFlagghc-lib-parser GHC.Types.Var No documentation available.
namedPiTyBinder_maybe :: PiTyBinder -> Maybe TyCoVarghc-lib-parser GHC.Types.Var No documentation available.
varMultMaybe :: Id -> Maybe Multghc-lib-parser GHC.Types.Var No documentation available.
plusMaybeVarEnv_C :: (a -> a -> Maybe a) -> VarEnv a -> VarEnv a -> VarEnv aghc-lib-parser GHC.Types.Var.Env No documentation available.
rnOccL_maybe :: RnEnv2 -> Var -> Maybe Varghc-lib-parser GHC.Types.Var.Env Look up the renaming of an occurrence in the left or right term
rnOccR_maybe :: RnEnv2 -> Var -> Maybe Varghc-lib-parser GHC.Types.Var.Env Look up the renaming of an occurrence in the left or right term