X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Ftypes%2FTyCon.lhs;h=3c1f92302cedef3f7619f187f7c8b845ea660dbe;hb=36436bc62a98f53e126ec02fe946337c4c766c3f;hp=dc81d81a2b6a45d5f1ab2b06c12aeff5ab698867;hpb=2720c6609b7b7f6002dd0ffcc31ed0363f1208d9;p=ghc-hetmet.git diff --git a/ghc/compiler/types/TyCon.lhs b/ghc/compiler/types/TyCon.lhs index dc81d81..3c1f923 100644 --- a/ghc/compiler/types/TyCon.lhs +++ b/ghc/compiler/types/TyCon.lhs @@ -5,16 +5,20 @@ \begin{code} module TyCon( - TyCon, KindCon, SuperKindCon, ArgVrcs, + TyCon, ArgVrcs, FieldLabel, - AlgTyConFlavour(..), - DataConDetails(..), visibleDataCons, + PrimRep(..), + tyConPrimRep, + + AlgTyConRhs(..), visibleDataCons, - isFunTyCon, isUnLiftedTyCon, isBoxedTyCon, isProductTyCon, + isFunTyCon, isUnLiftedTyCon, isProductTyCon, isAlgTyCon, isDataTyCon, isSynTyCon, isNewTyCon, isPrimTyCon, isEnumerationTyCon, isTupleTyCon, isUnboxedTupleTyCon, isBoxedTupleTyCon, tupleTyConBoxity, - isRecursiveTyCon, newTyConRep, isHiBootTyCon, + isRecursiveTyCon, newTyConRep, newTyConRhs, newTyConRhs_maybe, isHiBootTyCon, + + makeTyConAbstract, isAbstractTyCon, mkForeignTyCon, isForeignTyCon, @@ -25,20 +29,15 @@ module TyCon( mkLiftedPrimTyCon, mkTupleTyCon, mkSynTyCon, - mkKindCon, - mkSuperKindCon, - - setTyConName, tyConName, tyConKind, tyConUnique, tyConTyVars, - tyConArgVrcs_maybe, tyConArgVrcs, - tyConDataConDetails, tyConDataCons, tyConDataCons_maybe, tyConFamilySize, + tyConArgVrcs, + algTyConRhs, tyConDataCons, tyConDataCons_maybe, tyConFamilySize, tyConSelIds, - tyConTheta, - tyConPrimRep, + tyConStupidTheta, tyConArity, isClassTyCon, tyConClass_maybe, getSynTyConDefn, @@ -46,28 +45,27 @@ module TyCon( maybeTyConSingleCon, - matchesTyCon, - -- Generics tyConHasGenerics ) where #include "HsVersions.h" -import {-# SOURCE #-} TypeRep ( Type, PredType, Kind, SuperKind ) +import {-# SOURCE #-} TypeRep ( Type, PredType ) -- 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 {-# SOURCE #-} DataCon ( DataCon, isVanillaDataCon ) import Var ( TyVar, Id ) import Class ( Class ) +import Kind ( Kind ) import BasicTypes ( Arity, RecFlag(..), Boxity(..), isBoxed ) import Name ( Name, nameUnique, NamedThing(getName) ) -import PrelNames ( Unique, Uniquable(..), anyBoxConKey ) -import PrimRep ( PrimRep(..), isFollowableRep ) -import Maybes ( orElse, expectJust ) +import PrelNames ( Unique, Uniquable(..) ) +import Maybes ( orElse ) +import Util ( equalLength ) import Outputable import FastString \end{code} @@ -79,9 +77,6 @@ import FastString %************************************************************************ \begin{code} -type KindCon = TyCon -type SuperKindCon = TyCon - data TyCon = FunTyCon { tyConUnique :: Unique, @@ -91,49 +86,53 @@ data TyCon } - | AlgTyCon { -- Tuples, data type, and newtype decls. + | AlgTyCon { -- Data type, and newtype decls. -- All lifted, all boxed tyConUnique :: Unique, tyConName :: Name, tyConKind :: Kind, tyConArity :: Arity, - tyConTyVars :: [TyVar], - argVrcs :: ArgVrcs, - algTyConTheta :: [PredType], + tyConTyVars :: [TyVar], -- Scopes over (a) the [PredType] in AlgTyConRhs.DataTyCon + -- (b) the cached types in AlgTyConRhs.NewTyCon + -- But not over the data constructors + argVrcs :: ArgVrcs, - dataCons :: DataConDetails DataCon, + algTcSelIds :: [Id], -- Its record selectors (empty if none): - selIds :: [Id], -- Its record selectors (if any) + algTcStupidTheta :: [PredType], -- The "stupid theta" for the data type + -- (always empty for GADTs) - algTyConFlavour :: AlgTyConFlavour, - algTyConRec :: RecFlag, -- Tells whether the data type is part of + algTcRhs :: AlgTyConRhs, -- Data constructors in here + + algTcRec :: RecFlag, -- Tells whether the data type is part of -- a mutually-recursive group or not - hasGenerics :: Bool, -- True <=> generic to/from functions are available - -- (in the exports of the data type's source module) + hasGenerics :: Bool, -- True <=> generic to/from functions are available + -- (in the exports of the data type's source module) - algTyConClass :: Maybe Class + algTcClass :: Maybe Class -- Just cl if this tycon came from a class declaration } | PrimTyCon { -- Primitive types; cannot be defined in Haskell -- Now includes foreign-imported types - tyConUnique :: Unique, - tyConName :: Name, - tyConKind :: Kind, - tyConArity :: Arity, - argVrcs :: ArgVrcs, - 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 + tyConUnique :: Unique, + tyConName :: Name, + tyConKind :: Kind, + tyConArity :: Arity, + argVrcs :: ArgVrcs, + + primTyConRep :: PrimRep, + -- Many primitive tycons are unboxed, but some are + -- boxed (represented by pointers). The CgRep tells. + + isUnLifted :: Bool, -- Most primitive tycons are unlifted, + -- but foreign-imported ones may not be tyConExtName :: Maybe FastString -- Just xx for foreign-imported types } | TupleTyCon { - tyConUnique :: Unique, tyConName :: Name, tyConKind :: Kind, @@ -157,25 +156,31 @@ data TyCon argVrcs :: ArgVrcs } - | KindCon { -- Type constructor at the kind level - tyConUnique :: Unique, - tyConName :: Name, - tyConKind :: SuperKind, - tyConArity :: Arity - } - - | SuperKindCon { -- The type of kind variables or boxity variables, - tyConUnique :: Unique, - tyConName :: Name - } +type FieldLabel = Name type ArgVrcs = [(Bool,Bool)] -- Tyvar variance info: [(occPos,occNeg)] -- [] means "no information, assume the worst" -data AlgTyConFlavour - = DataTyCon Bool -- Data type; True <=> an enumeration type - - | NewTyCon Type -- Newtype, with its *ultimate* representation type +data AlgTyConRhs + = AbstractTyCon -- We know nothing about this data type, except + -- that it's represented by a pointer + -- Used when we export a data type abstractly into + -- an hi file + + | DataTyCon + [DataCon] -- The constructors; can be empty if the user declares + -- the type to have no constructors + -- INVARIANT: Kept in order of increasing tag + -- (see the tag assignment in DataCon.mkDataCon) + Bool -- Cached: True <=> an enumeration type + -- Includes data types with no constructors. + + | NewTyCon -- Newtypes always have exactly one constructor + DataCon -- The unique constructor; it has no existentials + Type -- Cached: the argument type of the constructor + -- = the representation type of the tycon + + Type -- Cached: the *ultimate* representation type -- By 'ultimate' I mean that the rep type is not itself -- a newtype or type synonym. -- The rep type isn't entirely simple: @@ -188,20 +193,50 @@ data AlgTyConFlavour -- The rep type is [(a,Int)] -- NB: the rep type isn't necessarily the original RHS of the -- newtype decl, because the rep type looks through other - -- newtypes. If you want hte original RHS, look at the - -- argument type of the data constructor. + -- newtypes. + +visibleDataCons :: AlgTyConRhs -> [DataCon] +visibleDataCons AbstractTyCon = [] +visibleDataCons (DataTyCon cs _) = cs +visibleDataCons (NewTyCon c _ _) = [c] +\end{code} -data DataConDetails datacon - = DataCons [datacon] -- Its data constructors, with fully polymorphic types - -- A type can have zero constructors +%************************************************************************ +%* * +\subsection{PrimRep} +%* * +%************************************************************************ - | Unknown -- Used only when We're importing this data type from an - -- hi-boot file, so we don't know what its constructors are +A PrimRep is an abstraction of a type. It contains information that +the code generator needs in order to pass arguments, return results, +and store values of this type. -visibleDataCons (DataCons cs) = cs -visibleDataCons other = [] -\end{code} +A PrimRep is somewhat similar to a CgRep (see codeGen/SMRep) and a +MachRep (see cmm/MachOp), although each of these types has a distinct +and clearly defined purpose: + + - A PrimRep is a CgRep + information about signedness + information + about primitive pointers (AddrRep). Signedness and primitive + pointers are required when passing a primitive type to a foreign + function, but aren't needed for call/return conventions of Haskell + functions. + - A MachRep is a basic machine type (non-void, doesn't contain + information on pointerhood or signedness, but contains some + reps that don't have corresponding Haskell types). + +\begin{code} +data PrimRep + = VoidRep + | PtrRep + | IntRep -- signed, word-sized + | WordRep -- unsinged, word-sized + | Int64Rep -- signed, 64 bit (32-bit words only) + | Word64Rep -- unsigned, 64 bit (32-bit words only) + | AddrRep -- a pointer, but not to a Haskell value + | FloatRep + | DoubleRep +\end{code} %************************************************************************ %* * @@ -216,21 +251,6 @@ module mutual-recursion. And they aren't called from many places. So we compromise, and move their Kind calculation to the call site. \begin{code} -mkSuperKindCon :: Name -> SuperKindCon -mkSuperKindCon name = SuperKindCon { - tyConUnique = nameUnique name, - tyConName = name - } - -mkKindCon :: Name -> SuperKind -> KindCon -mkKindCon name kind - = KindCon { - tyConUnique = nameUnique name, - tyConName = name, - tyConArity = 0, - tyConKind = kind - } - mkFunTyCon :: Name -> Kind -> TyCon mkFunTyCon name kind = FunTyCon { @@ -243,7 +263,7 @@ mkFunTyCon name kind -- 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) -mkAlgTyCon name kind tyvars theta argvrcs cons sels flavour is_rec gen_info +mkAlgTyCon name kind tyvars argvrcs stupid rhs sel_ids is_rec gen_info = AlgTyCon { tyConName = name, tyConUnique = nameUnique name, @@ -251,16 +271,15 @@ mkAlgTyCon name kind tyvars theta argvrcs cons sels flavour is_rec gen_info tyConArity = length tyvars, tyConTyVars = tyvars, argVrcs = argvrcs, - algTyConTheta = theta, - dataCons = cons, - selIds = sels, - algTyConClass = Nothing, - algTyConFlavour = flavour, - algTyConRec = is_rec, + algTcStupidTheta = stupid, + algTcRhs = rhs, + algTcSelIds = sel_ids, + algTcClass = Nothing, + algTcRec = is_rec, hasGenerics = gen_info } -mkClassTyCon name kind tyvars argvrcs con clas flavour is_rec +mkClassTyCon name kind tyvars argvrcs rhs clas is_rec = AlgTyCon { tyConName = name, tyConUnique = nameUnique name, @@ -268,12 +287,11 @@ mkClassTyCon name kind tyvars argvrcs con clas flavour is_rec tyConArity = length tyvars, tyConTyVars = tyvars, argVrcs = argvrcs, - algTyConTheta = [], - dataCons = DataCons [con], - selIds = [], - algTyConClass = Just clas, - algTyConFlavour = flavour, - algTyConRec = is_rec, + algTcStupidTheta = [], + algTcRhs = rhs, + algTcSelIds = [], + algTcClass = Just clas, + algTcRec = is_rec, hasGenerics = False } @@ -294,7 +312,6 @@ mkTupleTyCon name kind arity tyvars con boxed gen_info -- as primitive, but *lifted*, TyCons for now. They are lifted -- because the Haskell type T representing the (foreign) .NET -- type T is actually implemented (in ILX) as a thunk --- They have PtrRep mkForeignTyCon name ext_name kind arity arg_vrcs = PrimTyCon { tyConName = name, @@ -302,7 +319,7 @@ mkForeignTyCon name ext_name kind arity arg_vrcs tyConKind = kind, tyConArity = arity, argVrcs = arg_vrcs, - primTyConRep = PtrRep, + primTyConRep = PtrRep, -- they all do isUnLifted = False, tyConExtName = ext_name } @@ -338,9 +355,6 @@ mkSynTyCon name kind tyvars rhs argvrcs synTyConDefn = rhs, argVrcs = argvrcs } - -setTyConName tc name = tc {tyConName = name, tyConUnique = nameUnique name} - \end{code} \begin{code} @@ -348,6 +362,14 @@ isFunTyCon :: TyCon -> Bool isFunTyCon (FunTyCon {}) = True isFunTyCon _ = False +isAbstractTyCon :: TyCon -> Bool +isAbstractTyCon (AlgTyCon { algTcRhs = AbstractTyCon }) = True +isAbstractTyCon _ = False + +makeTyConAbstract :: TyCon -> TyCon +makeTyConAbstract tc@(AlgTyCon {}) = tc { algTcRhs = AbstractTyCon } +makeTyConAbstract tc = pprPanic "makeTyConAbstract" (ppr tc) + isPrimTyCon :: TyCon -> Bool isPrimTyCon (PrimTyCon {}) = True isPrimTyCon _ = False @@ -357,13 +379,6 @@ 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 :: TyCon -> Bool -isBoxedTyCon (AlgTyCon {}) = True -isBoxedTyCon (FunTyCon {}) = True -isBoxedTyCon (TupleTyCon {tyConBoxed = boxity}) = isBoxed boxity -isBoxedTyCon (PrimTyCon {primTyConRep = rep}) = isFollowableRep rep - -- isAlgTyCon returns True for both @data@ and @newtype@ isAlgTyCon :: TyCon -> Bool isAlgTyCon (AlgTyCon {}) = True @@ -378,17 +393,18 @@ isDataTyCon :: TyCon -> Bool -- True for all @data@ types -- False for newtypes -- unboxed tuples -isDataTyCon (AlgTyCon {algTyConFlavour = new_or_data}) - = case new_or_data of - NewTyCon _ -> False - other -> True +isDataTyCon tc@(AlgTyCon {algTcRhs = rhs}) + = case rhs of + DataTyCon _ _ -> True + NewTyCon _ _ _ -> False + AbstractTyCon -> pprPanic "isDataTyCon" (ppr tc) isDataTyCon (TupleTyCon {tyConBoxed = boxity}) = isBoxed boxity isDataTyCon other = False isNewTyCon :: TyCon -> Bool -isNewTyCon (AlgTyCon {algTyConFlavour = NewTyCon _}) = True -isNewTyCon other = False +isNewTyCon (AlgTyCon {algTcRhs = NewTyCon _ _ _}) = True +isNewTyCon other = False isProductTyCon :: TyCon -> Bool -- A "product" tycon @@ -398,22 +414,30 @@ isProductTyCon :: TyCon -> Bool -- may be DataType or NewType, -- may be unboxed or not, -- may be recursive or not -isProductTyCon (AlgTyCon {dataCons = DataCons [data_con]}) = not (isExistentialDataCon data_con) -isProductTyCon (TupleTyCon {}) = True -isProductTyCon other = False +isProductTyCon tc@(AlgTyCon {}) = case algTcRhs tc of + DataTyCon [data_con] _ -> isVanillaDataCon data_con + NewTyCon _ _ _ -> True + other -> False +isProductTyCon (TupleTyCon {}) = True +isProductTyCon other = False isSynTyCon :: TyCon -> Bool isSynTyCon (SynTyCon {}) = True isSynTyCon _ = False isEnumerationTyCon :: TyCon -> Bool -isEnumerationTyCon (AlgTyCon {algTyConFlavour = DataTyCon is_enum}) = is_enum -isEnumerationTyCon other = False +isEnumerationTyCon (AlgTyCon {algTcRhs = DataTyCon _ is_enum}) = is_enum +isEnumerationTyCon other = False isTupleTyCon :: TyCon -> Bool -- The unit tycon didn't used to be classed as a tuple tycon -- but I thought that was silly so I've undone it -- If it can't be for some reason, it should be a AlgTyCon +-- +-- NB: when compiling Data.Tuple, the tycons won't reply True to +-- isTupleTyCon, becuase they are built as AlgTyCons. However they +-- get spat into the interface file as tuple tycons, so I don't think +-- it matters. isTupleTyCon (TupleTyCon {}) = True isTupleTyCon other = False @@ -428,19 +452,18 @@ isBoxedTupleTyCon other = False tupleTyConBoxity tc = tyConBoxed tc isRecursiveTyCon :: TyCon -> Bool -isRecursiveTyCon (AlgTyCon {algTyConRec = Recursive}) = True +isRecursiveTyCon (AlgTyCon {algTcRec = Recursive}) = True isRecursiveTyCon other = False isHiBootTyCon :: TyCon -> Bool -- Used for knot-tying in hi-boot files -isHiBootTyCon (AlgTyCon {dataCons = Unknown}) = True -isHiBootTyCon other = False +isHiBootTyCon (AlgTyCon {algTcRhs = AbstractTyCon}) = True +isHiBootTyCon other = False isForeignTyCon :: TyCon -> Bool -- 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 +isForeignTyCon (PrimTyCon {tyConExtName = Just _}) = True +isForeignTyCon other = False \end{code} \begin{code} @@ -449,50 +472,70 @@ tyConHasGenerics (AlgTyCon {hasGenerics = hg}) = hg tyConHasGenerics (TupleTyCon {hasGenerics = hg}) = hg tyConHasGenerics other = False -- Synonyms -tyConDataConDetails :: TyCon -> DataConDetails DataCon -tyConDataConDetails (AlgTyCon {dataCons = cons}) = cons -tyConDataConDetails (TupleTyCon {dataCon = con}) = DataCons [con] -tyConDataConDetails other = pprPanic "tyConDataConDetails" (ppr other) - tyConDataCons :: TyCon -> [DataCon] -- It's convenient for tyConDataCons to return the -- empty list for type synonyms etc tyConDataCons tycon = tyConDataCons_maybe tycon `orElse` [] tyConDataCons_maybe :: TyCon -> Maybe [DataCon] -tyConDataCons_maybe (AlgTyCon {dataCons = DataCons cons}) = Just cons -tyConDataCons_maybe (TupleTyCon {dataCon = con}) = Just [con] -tyConDataCons_maybe other = Nothing +tyConDataCons_maybe (AlgTyCon {algTcRhs = DataTyCon cons _}) = Just cons +tyConDataCons_maybe (AlgTyCon {algTcRhs = NewTyCon con _ _}) = Just [con] +tyConDataCons_maybe (TupleTyCon {dataCon = con}) = Just [con] +tyConDataCons_maybe other = Nothing tyConFamilySize :: TyCon -> Int -tyConFamilySize (AlgTyCon {dataCons = DataCons cs}) = length cs -tyConFamilySize (TupleTyCon {}) = 1 +tyConFamilySize (AlgTyCon {algTcRhs = DataTyCon cons _}) = length cons +tyConFamilySize (AlgTyCon {algTcRhs = NewTyCon _ _ _}) = 1 +tyConFamilySize (TupleTyCon {}) = 1 #ifdef DEBUG tyConFamilySize other = pprPanic "tyConFamilySize:" (ppr other) #endif tyConSelIds :: TyCon -> [Id] -tyConSelIds (AlgTyCon {selIds = sels}) = sels -tyConSelIds other_tycon = [] +tyConSelIds (AlgTyCon {algTcSelIds = fs}) = fs +tyConSelIds other_tycon = [] + +algTyConRhs :: TyCon -> AlgTyConRhs +algTyConRhs (AlgTyCon {algTcRhs = rhs}) = rhs +algTyConRhs (TupleTyCon {dataCon = con}) = DataTyCon [con] False +algTyConRhs other = pprPanic "algTyConRhs" (ppr other) \end{code} \begin{code} +newTyConRhs :: TyCon -> ([TyVar], Type) +newTyConRhs (AlgTyCon {tyConTyVars = tvs, algTcRhs = NewTyCon _ rhs _}) = (tvs, rhs) +newTyConRhs tycon = pprPanic "newTyConRhs" (ppr tycon) + +newTyConRhs_maybe :: TyCon + -> [Type] -- Args to tycon + -> Maybe ([(TyVar,Type)], -- Substitution + Type) -- Body type (not yet substituted) +-- Non-recursive newtypes are transparent to Core; +-- Given an application to some types, return Just (tenv, ty) +-- if it's a saturated, non-recursive newtype. +newTyConRhs_maybe (AlgTyCon {tyConTyVars = tvs, + algTcRec = NonRecursive, -- Not recursive + algTcRhs = NewTyCon _ rhs _}) tys + | tvs `equalLength` tys -- Saturated + = Just (tvs `zip` tys, rhs) + +newTyConRhs_maybe other_tycon tys = Nothing + + newTyConRep :: TyCon -> ([TyVar], Type) -newTyConRep (AlgTyCon {tyConTyVars = tvs, algTyConFlavour = NewTyCon rep}) = (tvs, rep) +newTyConRep (AlgTyCon {tyConTyVars = tvs, algTcRhs = NewTyCon _ _ rep}) = (tvs, rep) +newTyConRep tycon = pprPanic "newTyConRep" (ppr tycon) tyConPrimRep :: TyCon -> PrimRep tyConPrimRep (PrimTyCon {primTyConRep = rep}) = rep -tyConPrimRep tc = ASSERT( not (isUnboxedTupleTyCon tc) ) - PtrRep - -- We should not be asking what the representation of an - -- unboxed tuple is, because it isn't a first class value. +tyConPrimRep tc = ASSERT(not (isUnboxedTupleTyCon tc)) PtrRep \end{code} \begin{code} -tyConTheta :: TyCon -> [PredType] -tyConTheta (AlgTyCon {algTyConTheta = theta}) = theta -tyConTheta (TupleTyCon {}) = [] --- shouldn't ask about anything else +tyConStupidTheta :: TyCon -> [PredType] +tyConStupidTheta (AlgTyCon {algTcStupidTheta = stupid}) = stupid +tyConStupidTheta (TupleTyCon {}) = [] +tyConStupidTheta tycon = pprPanic "tyConStupidTheta" (ppr tycon) \end{code} @tyConArgVrcs_maybe@ gives a list of (occPos,occNeg) flags, one for @@ -501,39 +544,37 @@ actually computed (in another file). \begin{code} tyConArgVrcs :: TyCon -> ArgVrcs -tyConArgVrcs tc = expectJust "tyConArgVrcs" (tyConArgVrcs_maybe tc) - -tyConArgVrcs_maybe :: TyCon -> Maybe ArgVrcs -tyConArgVrcs_maybe (FunTyCon {}) = Just [(False,True),(True,False)] -tyConArgVrcs_maybe (AlgTyCon {argVrcs = oi}) = Just oi -tyConArgVrcs_maybe (PrimTyCon {argVrcs = oi}) = Just oi -tyConArgVrcs_maybe (TupleTyCon {tyConArity = arity}) = Just (replicate arity (True,False)) -tyConArgVrcs_maybe (SynTyCon {argVrcs = oi}) = Just oi -tyConArgVrcs_maybe _ = Nothing +tyConArgVrcs (FunTyCon {}) = [(False,True),(True,False)] +tyConArgVrcs (AlgTyCon {argVrcs = oi}) = oi +tyConArgVrcs (PrimTyCon {argVrcs = oi}) = oi +tyConArgVrcs (TupleTyCon {tyConArity = arity}) = (replicate arity (True,False)) +tyConArgVrcs (SynTyCon {argVrcs = oi}) = oi \end{code} \begin{code} getSynTyConDefn :: TyCon -> ([TyVar], Type) getSynTyConDefn (SynTyCon {tyConTyVars = tyvars, synTyConDefn = ty}) = (tyvars,ty) +getSynTyConDefn tycon = pprPanic "getSynTyConDefn" (ppr tycon) \end{code} \begin{code} maybeTyConSingleCon :: TyCon -> Maybe DataCon -maybeTyConSingleCon (AlgTyCon {dataCons = DataCons [c]}) = Just c -maybeTyConSingleCon (AlgTyCon {}) = Nothing -maybeTyConSingleCon (TupleTyCon {dataCon = con}) = Just con -maybeTyConSingleCon (PrimTyCon {}) = Nothing -maybeTyConSingleCon (FunTyCon {}) = Nothing -- case at funty +maybeTyConSingleCon (AlgTyCon {algTcRhs = DataTyCon [c] _}) = Just c +maybeTyConSingleCon (AlgTyCon {algTcRhs = NewTyCon c _ _}) = Just c +maybeTyConSingleCon (AlgTyCon {}) = Nothing +maybeTyConSingleCon (TupleTyCon {dataCon = con}) = Just con +maybeTyConSingleCon (PrimTyCon {}) = Nothing +maybeTyConSingleCon (FunTyCon {}) = Nothing -- case at funty maybeTyConSingleCon tc = pprPanic "maybeTyConSingleCon: unexpected tycon " $ ppr tc \end{code} \begin{code} isClassTyCon :: TyCon -> Bool -isClassTyCon (AlgTyCon {algTyConClass = Just _}) = True +isClassTyCon (AlgTyCon {algTcClass = Just _}) = True isClassTyCon other_tycon = False tyConClass_maybe :: TyCon -> Maybe Class -tyConClass_maybe (AlgTyCon {algTyConClass = maybe_clas}) = maybe_clas +tyConClass_maybe (AlgTyCon {algTcClass = maybe_clas}) = maybe_clas tyConClass_maybe ther_tycon = Nothing \end{code} @@ -570,28 +611,3 @@ instance Outputable TyCon where instance NamedThing TyCon where getName = tyConName \end{code} - - -%************************************************************************ -%* * -\subsection{Kind constructors} -%* * -%************************************************************************ - -@matchesTyCon tc1 tc2@ checks whether an appliation -(tc1 t1..tn) matches (tc2 t1..tn). By "matches" we basically mean "equals", -except that at the kind level tc2 might have more boxity info than tc1. - -\begin{code} -matchesTyCon :: TyCon -- Expected (e.g. arg type of function) - -> TyCon -- Inferred (e.g. type of actual arg to function) - -> Bool - -matchesTyCon tc1 tc2 = uniq1 == uniq2 || uniq1 == anyBoxConKey - where - uniq1 = tyConUnique tc1 - uniq2 = tyConUnique tc2 -\end{code} - - -