Extract Inlined Constant mkCoreLet => "MkCore.mkCoreLet".
Variable sortAlts : forall {a}{b}, list (@triple AltCon a b) -> list (@triple AltCon a b).
- Extract Inlined Constant mkCoreLet => "sortAlts".
+ Extract Inlined Constant sortAlts => "sortAlts".
Implicit Arguments sortAlts [[a][b]].
-Variable trustMeCoercion : CoreCoercion.
- Extract Inlined Constant trustMeCoercion => "Coercion.unsafeCoerce".
+Variable mkUnsafeCoercion : CoreType -> CoreType -> CoreCoercion.
+ Extract Inlined Constant mkUnsafeCoercion => "Coercion.mkUnsafeCoercion".
(* Coercion and Type are actually the same thing in GHC, but we don't tell Coq about that. This lets us get around it. *)
Variable coreCoercionsAreReallyTypes : CoreCoercion -> CoreType.
Extract Inlined Constant coreCoercionsAreReallyTypes => "(\x -> x)".
-Section HaskWeakToCore.
+Definition weakCoercionToCoreCoercion (wc:WeakCoercion) : CoreCoercion :=
+ mkUnsafeCoercion (weakTypeToCoreType (fst (weakCoercionTypes wc))) (weakTypeToCoreType (snd (weakCoercionTypes wc))).
- (* the CoreVar for the "magic" bracket/escape identifiers must be created from within one of the monads *)
- Context (hetmet_brak_var : CoreVar).
- Context (hetmet_esc_var : CoreVar).
-
- Definition weakCoercionToCoreCoercion : WeakCoercion -> CoreCoercion :=
- fun _ => trustMeCoercion.
-
- Fixpoint weakExprToCoreExpr (f:Fresh unit (fun _ => WeakExprVar)) (me:WeakExpr) : @CoreExpr CoreVar :=
+Fixpoint weakExprToCoreExpr (me:WeakExpr) : @CoreExpr CoreVar :=
match me with
| WEVar (weakExprVar v _) => CoreEVar v
| WELit lit => CoreELit lit
- | WEApp e1 e2 => CoreEApp (weakExprToCoreExpr f e1) (weakExprToCoreExpr f e2)
- | WETyApp e t => CoreEApp (weakExprToCoreExpr f e ) (CoreEType (weakTypeToCoreType t))
- | WECoApp e co => CoreEApp (weakExprToCoreExpr f e )
+ | WEApp e1 e2 => CoreEApp (weakExprToCoreExpr e1) (weakExprToCoreExpr e2)
+ | WETyApp e t => CoreEApp (weakExprToCoreExpr e ) (CoreEType (weakTypeToCoreType t))
+ | WECoApp e co => CoreEApp (weakExprToCoreExpr e )
(CoreEType (coreCoercionsAreReallyTypes (weakCoercionToCoreCoercion co)))
- | WENote n e => CoreENote n (weakExprToCoreExpr f e )
- | WELam (weakExprVar ev _ ) e => CoreELam ev (weakExprToCoreExpr f e )
- | WETyLam (weakTypeVar tv _ ) e => CoreELam tv (weakExprToCoreExpr f e )
- | WECoLam (weakCoerVar cv _ _ _) e => CoreELam cv (weakExprToCoreExpr f e )
- | WECast e co => CoreECast (weakExprToCoreExpr f e ) (weakCoercionToCoreCoercion co)
+ | WENote n e => CoreENote n (weakExprToCoreExpr e )
+ | WELam (weakExprVar ev _ ) e => CoreELam ev (weakExprToCoreExpr e )
+ | WETyLam (weakTypeVar tv _ ) e => CoreELam tv (weakExprToCoreExpr e )
+ | WECoLam (weakCoerVar cv _ _ _) e => CoreELam cv (weakExprToCoreExpr e )
+ | WECast e co => CoreECast (weakExprToCoreExpr e ) (weakCoercionToCoreCoercion co)
| WEBrak v (weakTypeVar ec _) e t => fold_left CoreEApp
((CoreEType (TyVarTy ec))::
(CoreEType (weakTypeToCoreType t))::
- (weakExprToCoreExpr f e)::
+ (weakExprToCoreExpr e)::
nil)
(CoreEVar v)
| WEEsc v (weakTypeVar ec _) e t => fold_left CoreEApp
((CoreEType (TyVarTy ec))::
(CoreEType (weakTypeToCoreType t))::
- (weakExprToCoreExpr f e)::
+ (weakExprToCoreExpr e)::
nil)
(CoreEVar v)
- | WELet (weakExprVar v _) ve e => mkCoreLet (CoreNonRec v (weakExprToCoreExpr f ve)) (weakExprToCoreExpr f e)
- | WECase e tbranches tc types alts => let (v,f') := next _ _ f tt in
- CoreECase (weakExprToCoreExpr f' e) v (weakTypeToCoreType tbranches)
+ | WELet (weakExprVar v _) ve e => mkCoreLet (CoreNonRec v (weakExprToCoreExpr ve)) (weakExprToCoreExpr e)
+ | WECase vscrut e tbranches tc types alts =>
+ CoreECase (weakExprToCoreExpr e) vscrut (weakTypeToCoreType tbranches)
(sortAlts ((
fix mkCaseBranches (alts:Tree
??(AltCon*list WeakTypeVar*list WeakCoerVar*list WeakExprVar*WeakExpr)) :=
(map (fun v:WeakTypeVar => weakVarToCoreVar v) tvars)
(map (fun v:WeakCoerVar => weakVarToCoreVar v) cvars))
(map (fun v:WeakExprVar => weakVarToCoreVar v) evars))
- (weakExprToCoreExpr f' e))::nil
+ (weakExprToCoreExpr e))::nil
end
) alts))
| WELetRec mlr e => CoreELet (CoreRec
((fix mkLetBindings (mlr:Tree ??(WeakExprVar * WeakExpr)) :=
match mlr with
| T_Leaf None => nil
- | T_Leaf (Some (weakExprVar cv _,e)) => (cv,(weakExprToCoreExpr f e))::nil
+ | T_Leaf (Some (weakExprVar cv _,e)) => (cv,(weakExprToCoreExpr e))::nil
| T_Branch b1 b2 => app (mkLetBindings b1) (mkLetBindings b2)
end) mlr))
- (weakExprToCoreExpr f e)
+ (weakExprToCoreExpr e)
end.
-End HaskWeakToCore.
+Definition weakTypeOfWeakExpr (we:WeakExpr) : ???WeakType :=
+ coreTypeToWeakType (coreTypeOfCoreExpr (weakExprToCoreExpr we)).
+Instance weakExprToString : ToString WeakExpr :=
+ { toString := fun we => toString (weakExprToCoreExpr we) }.