diff options
Diffstat (limited to 'compiler/basicTypes/BasicTypes.hs')
| -rw-r--r-- | compiler/basicTypes/BasicTypes.hs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/compiler/basicTypes/BasicTypes.hs b/compiler/basicTypes/BasicTypes.hs index cf56957f7b..200e5c9b8a 100644 --- a/compiler/basicTypes/BasicTypes.hs +++ b/compiler/basicTypes/BasicTypes.hs @@ -28,6 +28,7 @@ module BasicTypes( Alignment, + PromotionFlag(..), isPromoted, FunctionOrData(..), WarningTxt(..), pprWarningTxtForMsg, StringLiteral(..), @@ -270,6 +271,24 @@ unSwap :: SwapFlag -> (a->a->b) -> a -> a -> b unSwap NotSwapped f a b = f a b unSwap IsSwapped f a b = f b a + +{- ********************************************************************* +* * + Promotion flag +* * +********************************************************************* -} + +-- | Is a TyCon a promoted data constructor or just a normal type constructor? +data PromotionFlag + = NotPromoted + | IsPromoted + deriving ( Eq, Data ) + +isPromoted :: PromotionFlag -> Bool +isPromoted IsPromoted = True +isPromoted NotPromoted = False + + {- ************************************************************************ * * |