Require Import Coq.Lists.List.
Require Import HaskKinds.
Require Import HaskCoreLiterals.
+Require Import HaskCore.
Require Import HaskCoreVars.
Require Import HaskCoreTypes.
Require Import HaskCoreTypes.
| WETyLam : WeakTypeVar -> WeakExpr -> WeakExpr
| WECoLam : WeakCoerVar -> WeakExpr -> WeakExpr
-(* the WeakType argument in WEBrak/WEEsc is used only when going back *)
-(* from Weak to Core; it lets us dodge a possibly-failing type *)
-(* calculation *)
-| WEBrak : WeakTypeVar -> WeakExpr -> WeakType -> WeakExpr
-| WEEsc : WeakTypeVar -> WeakExpr -> WeakType -> WeakExpr
+(* The WeakType argument in WEBrak/WEEsc is used only when going back *)
+(* from Weak to Core; it lets us dodge a possibly-failing type *)
+(* calculation. The CoreVar argument is the GlobalVar for the hetmet_brak *)
+(* or hetmet_esc identifier *)
+| WEBrak : CoreVar -> WeakTypeVar -> WeakExpr -> WeakType -> WeakExpr
+| WEEsc : CoreVar -> WeakTypeVar -> WeakExpr -> WeakType -> WeakExpr
-(* note that HaskWeak "Case" does not bind a variable; coreExprToWeakExpr adds a let-binder *)
-| WECase : forall (scrutinee:WeakExpr)
+| WECase : forall (vscrut:WeakExprVar)
+ (scrutinee:WeakExpr)
(tbranches:WeakType)
(tc:TyCon)
(type_params:list WeakType)
Definition weakTypeOfLiteral (lit:HaskLiteral) : WeakType :=
(WTyCon (haskLiteralToTyCon lit)).
-(* calculate the CoreType of a WeakExpr *)
-Fixpoint weakTypeOfWeakExpr (ce:WeakExpr) : ???WeakType :=
- match ce with
- | WEVar (weakExprVar v t) => OK t
- | WELit lit => OK (weakTypeOfLiteral lit)
- | WEApp e1 e2 => weakTypeOfWeakExpr e1 >>= fun t' =>
- match t' with
- | (WAppTy (WAppTy WFunTyCon t1) t2) => OK t2
- | _ => Error ("found non-function type "+++t'+++" in EApp")
- end
- | WETyApp e t => weakTypeOfWeakExpr e >>= fun te =>
- match te with
- | WForAllTy v ct => OK (replaceWeakTypeVar ct v t)
- | _ => Error ("found non-forall type "+++te+++" in ETyApp")
- end
- | WECoApp e co => weakTypeOfWeakExpr e >>= fun te =>
- match te with
- | WCoFunTy t1 t2 t => OK t
- | _ => Error ("found non-coercion type "+++te+++" in ETyApp")
- end
- | WELam (weakExprVar ev vt) e => weakTypeOfWeakExpr e >>= fun t' => OK (WAppTy (WAppTy WFunTyCon vt) t')
- | WETyLam tv e => weakTypeOfWeakExpr e >>= fun t' => OK (WForAllTy tv t')
- | WECoLam (weakCoerVar cv φ₁ φ₂) e => weakTypeOfWeakExpr e >>= fun t' => OK (WCoFunTy φ₁ φ₂ t')
- | WELet ev ve e => weakTypeOfWeakExpr e
- | WELetRec rb e => weakTypeOfWeakExpr e
- | WENote n e => weakTypeOfWeakExpr e
- | WECast e (weakCoercion t1 t2 _) => OK t2
- | WECase scrutinee tbranches tc type_params alts => OK tbranches
-
- (* note that we willfully ignore the type stashed in WEBrak/WEEsc here *)
- | WEBrak ec e _ => weakTypeOfWeakExpr e >>= fun t' => OK (WCodeTy ec t')
- | WEEsc ec e _ => weakTypeOfWeakExpr e >>= fun t' =>
- match t' with
- | (WAppTy (WAppTy WCodeTyCon (WTyVarTy ec')) t'') =>
- if eqd_dec ec ec' then OK t''
- else Error "level mismatch in escapification"
- | _ => Error "ill-typed escapification"
- end
- end.
-
+Variable coreTypeOfCoreExpr : @CoreExpr CoreVar -> CoreType.
+ Extract Inlined Constant coreTypeOfCoreExpr => "CoreUtils.exprType".