1 {-# OPTIONS_GHC -fno-warn-unused-matches -fno-warn-unused-binds -fno-warn-unused-imports #-}
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, (.), ($) )
33 import qualified Prelude
34 import qualified GHC.Base
35 import qualified System.IO.Unsafe
37 getTyConTyVars :: TyCon.TyCon -> [Var.TyVar]
39 if TyCon.isFunTyCon tc
41 else if TyCon.isPrimTyCon tc
43 else TyCon.tyConTyVars tc
45 cmpAlts :: (CoreSyn.AltCon,[Var.Var],CoreSyn.Expr Var.Var) -> (CoreSyn.AltCon,[Var.Var],CoreSyn.Expr Var.Var) -> Data.Ord.Ordering
46 cmpAlts (CoreSyn.DEFAULT,_,_) _ = Data.Ord.LT
47 cmpAlts _ (CoreSyn.DEFAULT,_,_) = Data.Ord.GT
48 cmpAlts (a1,_,_) (a2,_,_) = Data.Ord.compare a2 a1
50 sortAlts :: [(CoreSyn.AltCon,[Var.Var],CoreSyn.Expr Var.Var)] -> [(CoreSyn.AltCon,[Var.Var],CoreSyn.Expr Var.Var)]
51 sortAlts x = Data.List.sortBy (\a b -> if a `CoreSyn.ltAlt` b then Data.Ord.LT else Data.Ord.GT) x
53 coreVarToWeakVar :: Var.Var -> WeakVar
54 coreVarToWeakVar v | Id.isId v = WExprVar (WeakExprVar v (errOrFail (coreTypeToWeakType (Var.varType v))))
55 coreVarToWeakVar v | Var.isTyVar v = WTypeVar (WeakTypeVar v (coreKindToKind (Var.varType v)))
56 coreVarToWeakVar v | Var.isCoVar v
57 = WCoerVar (WeakCoerVar v
58 (errOrFail (coreTypeToWeakType (Prelude.fst (Coercion.coercionKind (Var.varType v)))))
59 (errOrFail (coreTypeToWeakType (Prelude.snd (Coercion.coercionKind (Var.varType v))))))
61 Prelude.error "Var.Var that is neither an expression variable, type variable, nor coercion variable!"
63 errOrFail :: OrError t -> t
65 errOrFail (Error s) = Prelude.error s
67 tyConOrTyFun :: TyCon.TyCon -> Prelude.Either TyCon.TyCon TyCon.TyCon
69 if n == TysPrim.statePrimTyCon -- special-purpose hack treat State# as a type family since it has kind *->* but no tyvars
71 else if TyCon.isFamInstTyCon n
75 nat2int :: Nat -> Prelude.Int
77 nat2int (S x) = 1 + (nat2int x)
79 natToString :: Nat -> Prelude.String
80 natToString n = show (nat2int n)
82 sanitizeForLatex :: Prelude.String -> Prelude.String
83 sanitizeForLatex [] = []
84 sanitizeForLatex ('_':x) = "\\_"++(sanitizeForLatex x)
85 sanitizeForLatex ('$':x) = "\\$"++(sanitizeForLatex x)
86 sanitizeForLatex ('#':x) = "\\#"++(sanitizeForLatex x)
87 sanitizeForLatex (c:x) = c:(sanitizeForLatex x)
89 kindToCoreKind :: Kind -> TypeRep.Kind
90 kindToCoreKind KindStar = TypeRep.liftedTypeKind
91 kindToCoreKind (KindArrow k1 k2) = Coercion.mkArrowKind (kindToCoreKind k1) (kindToCoreKind k2)
92 kindToCoreKind k = Prelude.error ((Prelude.++)
93 "kindToCoreKind does not know how to handle kind "
95 coreKindToKind :: TypeRep.Kind -> Kind
97 case Coercion.splitKindFunTy_maybe k of
98 Prelude.Just (k1,k2) -> KindArrow (coreKindToKind k1) (coreKindToKind k2)
100 if (Coercion.isLiftedTypeKind k) then KindStar
101 else if (Coercion.isUnliftedTypeKind k) then KindStar
102 else if (Coercion.isArgTypeKind k) then KindStar
103 else if (Coercion.isUbxTupleKind k) then KindStar
104 else if (Coercion.isOpenTypeKind k) then KindStar
106 -- The "subkinding" in GHC is not dealt with in System FC, and dealing
107 -- with it is not actually as simple as you'd think.
109 -- else if (Coercion.isUnliftedTypeKind k) then KindUnliftedType
110 -- else if (Coercion.isOpenTypeKind k) then KindOpenType
111 -- else if (Coercion.isArgTypeKind k) then KindArgType
112 -- else if (Coercion.isUbxTupleKind k) then KindUnboxedTuple
114 else if (Coercion.isTySuperKind k) then Prelude.error "coreKindToKind got the kind-of-the-kind-of-types"
115 else if (Coercion.isCoSuperKind k) then Prelude.error "coreKindToKind got the kind-of-the-kind-of-coercions"
116 else Prelude.error ((Prelude.++) "coreKindToKind got an unknown kind: "
117 (Outputable.showSDoc (Outputable.ppr k)))
118 outputableToString :: Outputable.Outputable a => a -> Prelude.String
119 outputableToString = (\x -> Outputable.showSDocDebug (Outputable.ppr x))
121 coreViewDeep :: Type.Type -> Type.Type
124 TypeRep.TyVarTy tv -> TypeRep.TyVarTy tv
125 TypeRep.FunTy arg res -> TypeRep.FunTy (coreViewDeep arg) (coreViewDeep res)
126 TypeRep.AppTy fun arg -> TypeRep.AppTy (coreViewDeep fun) (coreViewDeep arg)
127 TypeRep.ForAllTy fun arg -> TypeRep.ForAllTy fun (coreViewDeep arg)
128 TypeRep.TyConApp tc tys -> let t' = TypeRep.TyConApp tc (Prelude.map coreViewDeep tys)
129 in case Type.coreView t' of
130 Prelude.Nothing -> t'
131 Prelude.Just t'' -> t''
132 TypeRep.PredTy p -> case Type.coreView t of
133 Prelude.Nothing -> TypeRep.PredTy p
134 Prelude.Just t' -> t'
136 coreCoercionToWeakCoercion :: Type.Type -> WeakCoercion
137 coreCoercionToWeakCoercion c =
138 WCoUnsafe (errOrFail (coreTypeToWeakType t1)) (errOrFail (coreTypeToWeakType t2))
140 (t1,t2) = Coercion.coercionKind c
142 -- REMEMBER: cotycon applications may be oversaturated
144 TypeRep.TyVarTy v -> WCoVar (WeakCoerVar v (Prelude.error "FIXME") (Prelude.error "FIXME") (Prelude.error "FIXME"))
145 TypeRep.AppTy t1 t2 -> WCoApp (coreCoercionToWeakCoercion t1) (coreCoercionToWeakCoercion t2)
146 TypeRep.TyConApp tc t ->
147 case TyCon.isCoercionTyCon_maybe tc of
148 Prelude.Nothing -> Prelude.error ((Prelude.++) "coreCoercionToWeakCoercion got isCoercionTyCon_maybe " (outputableToString c))
149 Prelude.Just (_, ctcd) ->
151 (TyCon.CoTrans , [x,y] ) -> WCoComp (coreCoercionToWeakCoercion x) (coreCoercionToWeakCoercion y)
152 (TyCon.CoSym , [x] ) -> WCoSym (coreCoercionToWeakCoercion x)
153 (TyCon.CoLeft , [x] ) -> WCoLeft (coreCoercionToWeakCoercion x)
154 (TyCon.CoRight , [x] ) -> WCoLeft (coreCoercionToWeakCoercion x)
155 -- (TyCon.CoUnsafe, [t1, t2 ] ) -> WCoUnsafe (coreTypeToWeakType t1) (coreTypeToWeakType t2)
156 (TyCon.CoTrans , [] ) -> Prelude.error "CoTrans is not in post-publication-appendix SystemFC1"
157 (TyCon.CoCsel1 , [] ) -> Prelude.error "CoCsel1 is not in post-publication-appendix SystemFC1"
158 (TyCon.CoCsel2 , [] ) -> Prelude.error "CoCsel2 is not in post-publication-appendix SystemFC1"
159 (TyCon.CoCselR , [] ) -> Prelude.error "CoCselR is not in post-publication-appendix SystemFC1"
160 (TyCon.CoInst , [] ) -> Prelude.error "CoInst is not in post-publication-appendix SystemFC1"
161 (TyCon.CoAxiom _ _ _ , _ ) -> Prelude.error "CoAxiom is not yet implemented (FIXME)"
162 ( _, [ t1 , t2 ]) -> WCoUnsafe (errOrFail (coreTypeToWeakType t1)) (errOrFail (coreTypeToWeakType t2))
163 _ -> Prelude.error ((Prelude.++) "coreCoercionToWeakCoercion got " (outputableToString c))
164 _ -> Prelude.error ((Prelude.++) "coreCoercionToWeakCoercion got " (outputableToString c))
166 -- TypeRep.ForAllTy v t -> WCoAll (Prelude.error "FIXME") (coreTypeToWeakType t)
167 -- FIXME x y -> WCoAppT (coreCoercionToWeakCoercion x) (coreCoercionToWeakType y)
168 -- CoreSyn.Type t -> WCoType (coreTypeToWeakType t)
171 weakCoercionToCoreCoercion :: CoreCoercion -> Type.Type
172 | WCoVar (weakCoerVar _ _ t1 t2) => (t1,t2)
173 | WCoType t => Prelude_error "FIXME WCoType"
174 | WCoApp c1 c2 => Prelude_error "FIXME WCoApp"
175 | WCoAppT c t => Prelude_error "FIXME WCoAppT"
176 | WCoAll k f => Prelude_error "FIXME WCoAll"
177 | WCoSym c => let (t2,t1) := weakCoercionTypes c in (t1,t2)
178 | WCoComp c1 c2 => Prelude_error "FIXME WCoComp"
179 | WCoLeft c => Prelude_error "FIXME WCoLeft"
180 | WCoRight c => Prelude_error "FIXME WCoRight"
181 | WCoUnsafe t1 t2 => (t1,t2)
184 {-# NOINLINE trace #-}
185 trace :: Prelude.String -> a -> a
188 --trace = Debug.Trace.trace
190 --trace msg x = System.IO.Unsafe.unsafePerformIO $ Prelude.return x
192 --trace msg x = System.IO.Unsafe.unsafePerformIO $
193 -- (Prelude.>>=) (System.IO.hPutStrLn System.IO.stdout msg) (\_ -> Prelude.return x)
194 --trace msg x = System.IO.Unsafe.unsafePerformIO $
195 -- (Prelude.>>=) (System.IO.hPutStr System.IO.stdout " ") (\_ -> Prelude.return x)
198 {- -- used for extracting strings WITHOUT the patch for Coq
200 (\ b0 b1 b2 b3 b4 b5 b6 b7 ->
201 let f b i = if b then 1 `shiftL` i else 0
202 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))
205 -- I'm leaving this here (commented out) in case I ever need it again)
206 --checkTypeEquality :: Type.Type -> Type.Type -> Prelude.Bool
207 --checkTypeEquality t1 t2 = Type.tcEqType (Type.expandTypeSynonyms t1) (Type.expandTypeSynonyms t2)