1 (*********************************************************************************************************************************)
2 (* HaskWeakVars: types and variables for HaskWeak *)
3 (*********************************************************************************************************************************)
5 Generalizable All Variables.
6 Require Import Preamble.
7 Require Import Coq.Strings.String.
8 Require Import Coq.Lists.List.
9 Require Import General.
10 Require Import HaskKinds.
11 Require Import HaskLiterals.
12 Require Import HaskTyCons.
13 Require Import HaskCoreVars.
14 Require Import HaskCoreTypes.
15 Require Import HaskWeakTypes.
17 (* a WeakExprVar just wraps a CoreVar and tags it with the type of its value *)
18 Inductive WeakExprVar := weakExprVar : CoreVar -> WeakType -> WeakExprVar.
20 (* a WeakVar is one of the three sorts *)
21 Inductive WeakVar : Type :=
22 | WExprVar : WeakExprVar -> WeakVar
23 | WTypeVar : WeakTypeVar -> WeakVar
24 | WCoerVar : WeakCoerVar -> WeakVar.
25 Coercion WExprVar : WeakExprVar >-> WeakVar.
26 Coercion WTypeVar : WeakTypeVar >-> WeakVar.
27 Coercion WCoerVar : WeakCoerVar >-> WeakVar.
29 Definition weakTypeVarToKind (tv:WeakTypeVar) : Kind :=
30 match tv with weakTypeVar _ k => k end.
31 Coercion weakTypeVarToKind : WeakTypeVar >-> Kind.
33 Definition weakVarToCoreVar (wv:WeakVar) : CoreVar :=
35 | WExprVar (weakExprVar v _ ) => v
36 | WTypeVar (weakTypeVar v _ ) => v
37 | WCoerVar (weakCoerVar v _ _) => v
39 Coercion weakVarToCoreVar : WeakVar >-> CoreVar.
41 Definition haskLiteralToWeakType lit : WeakType :=
42 WTyCon (haskLiteralToTyCon lit).
43 Coercion haskLiteralToWeakType : HaskLiteral >-> WeakType.
45 Variable coreVarToWeakVar : CoreVar -> WeakVar. Extract Inlined Constant coreVarToWeakVar => "coreVarToWeakVar".
46 Variable getTyConTyVars_ : CoreTyCon -> list CoreVar. Extract Inlined Constant getTyConTyVars_ => "getTyConTyVars".
47 Definition tyConTyVars (tc:CoreTyCon) :=
48 filter (map (fun x => match coreVarToWeakVar x with WTypeVar v => Some v | _ => None end) (getTyConTyVars_ tc)).
50 Definition tyConKind (tc:TyCon) : list Kind := map (fun (x:WeakTypeVar) => x:Kind) (tyConTyVars tc).
52 Variable rawTyFunKind : CoreTyCon -> ((list Kind) * Kind). Extract Inlined Constant rawTyFunKind => "rawTyFunKind".
54 Definition tyFunKind (tc:TyFun) : ((list Kind) * Kind) :=
57 Instance WeakVarToString : ToString WeakVar :=
58 { toString := fun x => toString (weakVarToCoreVar x) }.