isTupleTyCon, isUnboxedTupleTyCon, isBoxedTupleTyCon, tupleTyConBoxity,
isRecursiveTyCon, newTyConRep,
- mkAlgTyConRep, --mkAlgTyCon,
+ mkForeignTyCon, isForeignTyCon,
+
+ mkAlgTyCon, --mkAlgTyCon,
mkClassTyCon,
mkFunTyCon,
mkPrimTyCon,
tyConUnique,
tyConTyVars,
tyConArgVrcs_maybe,
- tyConDataCons, tyConDataConsIfAvailable,
- tyConFamilySize,
+ tyConDataCons, tyConDataConsIfAvailable, tyConFamilySize,
+ tyConSelIds,
tyConTheta,
tyConPrimRep,
tyConArity,
- isClassTyCon,
+ isClassTyCon, tyConClass_maybe,
getSynTyConDefn,
maybeTyConSingleCon,
#include "HsVersions.h"
-import {-# SOURCE #-} TypeRep ( Type, Kind, SuperKind )
+import {-# SOURCE #-} TypeRep ( Type, PredType, Kind, SuperKind )
-- Should just be Type(Type), but this fails due to bug present up to
-- and including 4.02 involving slurping of hi-boot files. Bug is now fixed.
import {-# SOURCE #-} DataCon ( DataCon, isExistentialDataCon )
-import Class ( ClassContext )
import Var ( TyVar, Id )
+import Class ( Class )
import BasicTypes ( Arity, RecFlag(..), Boxity(..),
isBoxed, EP(..) )
import Name ( Name, nameUnique, NamedThing(getName) )
tyConTyVars :: [TyVar],
tyConArgVrcs :: ArgVrcs,
- algTyConTheta :: ClassContext,
+ algTyConTheta :: [PredType],
dataCons :: [DataCon],
-- Its data constructors, with fully polymorphic types
-- (b) in a quest for fast compilation we don't import
-- the constructors
+ selIds :: [Id], -- Its record selectors (if any)
+
noOfDataCons :: Int, -- Number of data constructors
-- Usually this is the same as the length of the
-- dataCons field, but the latter may be empty if
-- e.g. the TyCon for a Class dictionary,
-- and TyCons with unboxed arguments
- algTyConClass :: Bool -- True if this tycon comes from a class declaration
+ algTyConClass :: Maybe Class -- Just cl if this tycon came from a class declaration
}
- | PrimTyCon { -- Primitive types; cannot be defined in Haskell
- -- NB: All of these guys are *unlifted*, but not all are *unboxed*
+ | PrimTyCon { -- Primitive types; cannot be defined in Haskell
+ -- Now includes foreign-imported types
tyConUnique :: Unique,
tyConName :: Name,
tyConKind :: Kind,
tyConArity :: Arity,
tyConArgVrcs :: ArgVrcs,
- primTyConRep :: PrimRep
+ primTyConRep :: PrimRep, -- Many primitive tycons are unboxed, but some are
+ -- boxed (represented by pointers). The PrimRep tells.
+
+ isUnLifted :: Bool -- Most primitive tycons are unlifted,
+ -- but foreign-imported ones may not be
}
| TupleTyCon {
}
type ArgVrcs = [(Bool,Bool)] -- Tyvar variance info: [(occPos,occNeg)]
- -- *NB*: this is tyvar variance info, *not*
- -- termvar usage info.
data AlgTyConFlavour
= DataTyCon -- Data type
-- This is the making of a TyCon. Just the same as the old mkAlgTyCon,
-- but now you also have to pass in the generic information about the type
-- constructor - you can get hold of it easily (see Generics module)
-mkAlgTyConRep name kind tyvars theta argvrcs cons ncons flavour rec
+mkAlgTyCon name kind tyvars theta argvrcs cons ncons sels flavour rec
gen_info
= AlgTyCon {
tyConName = name,
tyConArgVrcs = argvrcs,
algTyConTheta = theta,
dataCons = cons,
+ selIds = sels,
noOfDataCons = ncons,
- algTyConClass = False,
+ algTyConClass = Nothing,
algTyConFlavour = flavour,
algTyConRec = rec,
genInfo = gen_info
tyConArgVrcs = argvrcs,
algTyConTheta = [],
dataCons = [con],
+ selIds = [],
noOfDataCons = 1,
- algTyConClass = True,
+ algTyConClass = Just clas,
algTyConFlavour = flavour,
algTyConRec = NonRecursive,
genInfo = Nothing
genInfo = gen_info
}
-mkPrimTyCon name kind arity arg_vrcs rep
+-- Foreign-imported (.NET) type constructors are represented
+-- as primitive, but *lifted*, TyCons for now.
+-- They have PtrRep
+mkForeignTyCon name kind arity arg_vrcs
= PrimTyCon {
- tyConName = name,
- tyConUnique = nameUnique name,
- tyConKind = kind,
- tyConArity = arity,
+ tyConName = name,
+ tyConUnique = nameUnique name,
+ tyConKind = kind,
+ tyConArity = arity,
tyConArgVrcs = arg_vrcs,
- primTyConRep = rep
+ primTyConRep = PtrRep,
+ isUnLifted = False
+ }
+
+
+mkPrimTyCon name kind arity arg_vrcs rep
+ = PrimTyCon {
+ tyConName = name,
+ tyConUnique = nameUnique name,
+ tyConKind = kind,
+ tyConArity = arity,
+ tyConArgVrcs = arg_vrcs,
+ primTyConRep = rep,
+ isUnLifted = True
}
mkSynTyCon name kind arity tyvars rhs argvrcs
isPrimTyCon (PrimTyCon {}) = True
isPrimTyCon _ = False
-isUnLiftedTyCon (PrimTyCon {}) = True
-isUnLiftedTyCon (TupleTyCon { tyConBoxed = boxity}) = not (isBoxed boxity)
-isUnLiftedTyCon _ = False
+isUnLiftedTyCon (PrimTyCon {isUnLifted = is_unlifted}) = is_unlifted
+isUnLiftedTyCon (TupleTyCon {tyConBoxed = boxity}) = not (isBoxed boxity)
+isUnLiftedTyCon _ = False
-- isBoxedTyCon should not be applied to SynTyCon, nor KindCon
isBoxedTyCon (AlgTyCon {}) = True
isRecursiveTyCon (AlgTyCon {algTyConRec = Recursive}) = True
isRecursiveTyCon other = False
+
+-- isForeignTyCon identifies foreign-imported type constructors
+-- For the moment, they are primitive but lifted, but that may change
+isForeignTyCon (PrimTyCon {isUnLifted = is_unlifted}) = not is_unlifted
+isForeignTyCon other = False
\end{code}
\begin{code}
tyConDataCons :: TyCon -> [DataCon]
-tyConDataCons tycon = ASSERT2( not (null cons), ppr tycon ) cons
+tyConDataCons tycon = ASSERT2( not (null cons), ppr tycon )
+ ASSERT2( length cons == tyConFamilySize tycon, ppr tycon )
+ cons
where
cons = tyConDataConsIfAvailable tycon
tyConFamilySize other = pprPanic "tyConFamilySize:" (ppr other)
#endif
+tyConSelIds :: TyCon -> [Id]
+tyConSelIds (AlgTyCon {selIds = sels}) = sels
+tyConSelIds other_tycon = []
+\end{code}
+
+\begin{code}
tyConPrimRep :: TyCon -> PrimRep
tyConPrimRep (PrimTyCon {primTyConRep = rep}) = rep
tyConPrimRep _ = PtrRep
\end{code}
\begin{code}
-tyConTheta :: TyCon -> ClassContext
+tyConTheta :: TyCon -> [PredType]
tyConTheta (AlgTyCon {algTyConTheta = theta}) = theta
-- should ask about anything else
\end{code}
\begin{code}
isClassTyCon :: TyCon -> Bool
-isClassTyCon (AlgTyCon {algTyConClass = is_class_tycon}) = is_class_tycon
-isClassTyCon other_tycon = False
+isClassTyCon (AlgTyCon {algTyConClass = Just _}) = True
+isClassTyCon other_tycon = False
+
+tyConClass_maybe :: TyCon -> Maybe Class
+tyConClass_maybe (AlgTyCon {algTyConClass = maybe_clas}) = maybe_clas
+tyConClass_maybe ther_tycon = Nothing
\end{code}
projects / ghc-hetmet.git / blobdiff