1 {-# OPTIONS_GHC -fno-warn-unused-matches -fno-warn-unused-binds #-}
2 module CoqPass ( coqPassCoreToString, coqPassCoreToCore )
4 import qualified Unique
5 import qualified UniqSupply
6 import qualified MkCore
7 import qualified TysWiredIn
8 import qualified TysPrim
9 import qualified Outputable
10 import qualified PrelNames
11 import qualified OccName
13 import qualified Literal
15 import qualified TypeRep
16 import qualified DataCon
17 import qualified TyCon
18 import qualified Coercion
21 import qualified FastString
22 import qualified BasicTypes
23 import qualified DataCon
24 import qualified CoreSyn
25 import qualified CoreUtils
26 import qualified Class
27 import qualified Data.Char
28 import qualified Data.List
29 import qualified Data.Ord
30 import qualified Data.Typeable
31 import Data.Bits ((.&.), shiftL, (.|.))
32 import Prelude ( (++), (+), (==), Show, show, Char, (.), ($) )
33 import qualified Prelude
34 import qualified Debug.Trace
35 import qualified GHC.Base
36 import qualified System.IO
37 import qualified System.IO.Unsafe
39 getTyConTyVars :: TyCon.TyCon -> [Var.TyVar]
41 if TyCon.isFunTyCon tc
43 else if TyCon.isPrimTyCon tc
45 else TyCon.tyConTyVars tc
47 cmpAlts :: (CoreSyn.AltCon,[Var.Var],CoreSyn.Expr Var.Var) -> (CoreSyn.AltCon,[Var.Var],CoreSyn.Expr Var.Var) -> Data.Ord.Ordering
48 cmpAlts (CoreSyn.DEFAULT,_,_) _ = Data.Ord.LT
49 cmpAlts _ (CoreSyn.DEFAULT,_,_) = Data.Ord.GT
50 cmpAlts (a1,_,_) (a2,_,_) = Data.Ord.compare a2 a1
52 sortAlts :: [(CoreSyn.AltCon,[Var.Var],CoreSyn.Expr Var.Var)] -> [(CoreSyn.AltCon,[Var.Var],CoreSyn.Expr Var.Var)]
53 sortAlts x = Data.List.sortBy (\a b -> if a `CoreSyn.ltAlt` b then Data.Ord.LT else Data.Ord.GT) x
55 coreVarToWeakVar :: Var.Var -> WeakVar
56 coreVarToWeakVar v | Id.isId v = WExprVar (WeakExprVar v (errOrFail (coreTypeToWeakType (Var.varType v))))
57 coreVarToWeakVar v | Var.isTyVar v = WTypeVar (WeakTypeVar v (coreKindToKind (Var.varType v)))
58 coreVarToWeakVar v | Var.isCoVar v = WCoerVar (WeakCoerVar v (Prelude.error "FIXME")
59 (Prelude.error "FIXME") (Prelude.error "FIXME"))
61 Prelude.error "Var.Var that is neither an expression variable, type variable, nor coercion variable!"
64 errOrFail (Error s) = Prelude.error s
66 tyConOrTyFun :: TyCon.TyCon -> Prelude.Either TyCon.TyCon TyCon.TyCon
68 if n == TysPrim.statePrimTyCon -- special-purpose hack treat State# as a type family since it has kind *->* but no tyvars
70 else if TyCon.isFamInstTyCon n
74 nat2int :: Nat -> Prelude.Int
76 nat2int (S x) = 1 + (nat2int x)
78 natToString :: Nat -> Prelude.String
79 natToString n = show (nat2int n)
81 sanitizeForLatex :: Prelude.String -> Prelude.String
82 sanitizeForLatex [] = []
83 sanitizeForLatex ('_':x) = "\\_"++(sanitizeForLatex x)
84 sanitizeForLatex ('$':x) = "\\$"++(sanitizeForLatex x)
85 sanitizeForLatex ('#':x) = "\\#"++(sanitizeForLatex x)
86 sanitizeForLatex (c:x) = c:(sanitizeForLatex x)
88 kindToCoreKind :: Kind -> TypeRep.Kind
89 kindToCoreKind KindStar = TypeRep.liftedTypeKind
90 kindToCoreKind (KindArrow k1 k2) = Coercion.mkArrowKind (kindToCoreKind k1) (kindToCoreKind k2)
91 kindToCoreKind _ = Prelude.error "kindToCoreKind does not know how to handle that"
93 coreKindToKind :: TypeRep.Kind -> Kind
95 case Coercion.splitKindFunTy_maybe k of
96 Prelude.Just (k1,k2) -> KindArrow (coreKindToKind k1) (coreKindToKind k2)
98 if (Coercion.isLiftedTypeKind k) then KindStar
99 else if (Coercion.isUnliftedTypeKind k) then KindStar
100 else if (Coercion.isArgTypeKind k) then KindStar
101 else if (Coercion.isUbxTupleKind k) then KindStar
102 else if (Coercion.isOpenTypeKind k) then KindStar
104 -- The "subkinding" in GHC is not dealt with in System FC, and dealing
105 -- with it is not actually as simple as you'd think.
107 -- else if (Coercion.isUnliftedTypeKind k) then KindUnliftedType
108 -- else if (Coercion.isOpenTypeKind k) then KindOpenType
109 -- else if (Coercion.isArgTypeKind k) then KindArgType
110 -- else if (Coercion.isUbxTupleKind k) then KindUnboxedTuple
112 else if (Coercion.isTySuperKind k) then Prelude.error "coreKindToKind got the kind-of-the-kind-of-types"
113 else if (Coercion.isCoSuperKind k) then Prelude.error "coreKindToKind got the kind-of-the-kind-of-coercions"
114 else Prelude.error ((Prelude.++) "coreKindToKind got an unknown kind: "
115 (Outputable.showSDoc (Outputable.ppr k)))
116 outputableToString :: Outputable.Outputable a => a -> Prelude.String
117 outputableToString = (\x -> Outputable.showSDoc (Outputable.ppr x))
119 coreViewDeep :: Type.Type -> Type.Type
122 TypeRep.TyVarTy tv -> TypeRep.TyVarTy tv
123 TypeRep.FunTy arg res -> TypeRep.FunTy (coreViewDeep arg) (coreViewDeep res)
124 TypeRep.AppTy fun arg -> TypeRep.AppTy (coreViewDeep fun) (coreViewDeep arg)
125 TypeRep.ForAllTy fun arg -> TypeRep.ForAllTy fun (coreViewDeep arg)
126 TypeRep.TyConApp tc tys -> let t' = TypeRep.TyConApp tc (Prelude.map coreViewDeep tys)
127 in case Type.coreView t' of
128 Prelude.Nothing -> t'
129 Prelude.Just t'' -> t''
130 TypeRep.PredTy p -> case Type.coreView t of
131 Prelude.Nothing -> TypeRep.PredTy p
132 Prelude.Just t' -> t'
134 coreCoercionToWeakCoercion :: Type.Type -> WeakCoercion
135 coreCoercionToWeakCoercion c =
136 WCoUnsafe (errOrFail (coreTypeToWeakType t1)) (errOrFail (coreTypeToWeakType t2))
138 (t1,t2) = Coercion.coercionKind c
140 -- REMEMBER: cotycon applications may be oversaturated
142 TypeRep.TyVarTy v -> WCoVar (WeakCoerVar v (Prelude.error "FIXME") (Prelude.error "FIXME") (Prelude.error "FIXME"))
143 TypeRep.AppTy t1 t2 -> WCoApp (coreCoercionToWeakCoercion t1) (coreCoercionToWeakCoercion t2)
144 TypeRep.TyConApp tc t ->
145 case TyCon.isCoercionTyCon_maybe tc of
146 Prelude.Nothing -> Prelude.error ((Prelude.++) "coreCoercionToWeakCoercion got isCoercionTyCon_maybe " (outputableToString c))
147 Prelude.Just (_, ctcd) ->
149 (TyCon.CoTrans , [x,y] ) -> WCoComp (coreCoercionToWeakCoercion x) (coreCoercionToWeakCoercion y)
150 (TyCon.CoSym , [x] ) -> WCoSym (coreCoercionToWeakCoercion x)
151 (TyCon.CoLeft , [x] ) -> WCoLeft (coreCoercionToWeakCoercion x)
152 (TyCon.CoRight , [x] ) -> WCoLeft (coreCoercionToWeakCoercion x)
153 -- (TyCon.CoUnsafe, [t1, t2 ] ) -> WCoUnsafe (coreTypeToWeakType t1) (coreTypeToWeakType t2)
154 (TyCon.CoTrans , [] ) -> Prelude.error "CoTrans is not in post-publication-appendix SystemFC1"
155 (TyCon.CoCsel1 , [] ) -> Prelude.error "CoCsel1 is not in post-publication-appendix SystemFC1"
156 (TyCon.CoCsel2 , [] ) -> Prelude.error "CoCsel2 is not in post-publication-appendix SystemFC1"
157 (TyCon.CoCselR , [] ) -> Prelude.error "CoCselR is not in post-publication-appendix SystemFC1"
158 (TyCon.CoInst , [] ) -> Prelude.error "CoInst is not in post-publication-appendix SystemFC1"
159 (TyCon.CoAxiom _ _ _ , _ ) -> Prelude.error "CoAxiom is not yet implemented (FIXME)"
160 ( _, [ t1 , t2 ]) -> WCoUnsafe (errOrFail (coreTypeToWeakType t1)) (errOrFail (coreTypeToWeakType t2))
161 _ -> Prelude.error ((Prelude.++) "coreCoercionToWeakCoercion got " (outputableToString c))
162 _ -> Prelude.error ((Prelude.++) "coreCoercionToWeakCoercion got " (outputableToString c))
164 -- TypeRep.ForAllTy v t -> WCoAll (Prelude.error "FIXME") (coreTypeToWeakType t)
165 -- FIXME x y -> WCoAppT (coreCoercionToWeakCoercion x) (coreCoercionToWeakType y)
166 -- CoreSyn.Type t -> WCoType (coreTypeToWeakType t)
169 weakCoercionToCoreCoercion :: CoreCoercion -> Type.Type
170 | WCoVar (weakCoerVar _ _ t1 t2) => (t1,t2)
171 | WCoType t => Prelude_error "FIXME WCoType"
172 | WCoApp c1 c2 => Prelude_error "FIXME WCoApp"
173 | WCoAppT c t => Prelude_error "FIXME WCoAppT"
174 | WCoAll k f => Prelude_error "FIXME WCoAll"
175 | WCoSym c => let (t2,t1) := weakCoercionTypes c in (t1,t2)
176 | WCoComp c1 c2 => Prelude_error "FIXME WCoComp"
177 | WCoLeft c => Prelude_error "FIXME WCoLeft"
178 | WCoRight c => Prelude_error "FIXME WCoRight"
179 | WCoUnsafe t1 t2 => (t1,t2)
183 --trace = Debug.Trace.trace
185 trace msg x = System.IO.Unsafe.unsafePerformIO $ Prelude.return x
188 trace msg x = System.IO.Unsafe.unsafePerformIO $
189 (Prelude.>>=) (System.IO.hPutStrLn System.IO.stdout msg) (\_ -> Prelude.return x)
190 trace msg x = System.IO.Unsafe.unsafePerformIO $
191 (Prelude.>>=) (System.IO.hPutStr System.IO.stdout " ") (\_ -> Prelude.return x)
194 {- -- used for extracting strings WITHOUT the patch for Coq
196 (\ b0 b1 b2 b3 b4 b5 b6 b7 ->
197 let f b i = if b then 1 `shiftL` i else 0
198 in Data.Char.chr (f b0 0 .|. f b1 1 .|. f b2 2 .|. f b3 3 .|. f b4 4 .|. f b5 5 .|. f b6 6 .|. f b7 7))
201 -- I'm leaving this here (commented out) in case I ever need it again)
202 --checkTypeEquality :: Type.Type -> Type.Type -> Prelude.Bool
203 --checkTypeEquality t1 t2 = Type.tcEqType (Type.expandTypeSynonyms t1) (Type.expandTypeSynonyms t2)