1 (*********************************************************************************************************************************)
2 (* HaskWeakToCore: convert HaskWeak to HaskCore *)
3 (*********************************************************************************************************************************)
5 Generalizable All Variables.
6 Require Import Preamble.
7 Require Import General.
8 Require Import Coq.Strings.String.
9 Require Import Coq.Lists.List.
10 Require Import HaskKinds.
11 Require Import HaskLiterals.
12 Require Import HaskTyCons.
13 Require Import HaskCoreVars.
14 Require Import HaskCoreTypes.
15 Require Import HaskCore.
16 Require Import HaskWeakVars.
17 Require Import HaskWeakTypes.
18 Require Import HaskWeak.
19 Require Import HaskCoreToWeak.
21 Variable mkCoreLet : @CoreBind CoreVar -> @CoreExpr CoreVar -> @CoreExpr CoreVar.
22 Extract Inlined Constant mkCoreLet => "MkCore.mkCoreLet".
24 Variable sortAlts : forall {a}{b}, list (@triple CoreAltCon a b) -> list (@triple CoreAltCon a b).
25 Extract Inlined Constant sortAlts => "sortAlts".
26 Implicit Arguments sortAlts [[a][b]].
28 Definition weakAltConToCoreAltCon (wa:WeakAltCon) : CoreAltCon :=
30 | WeakDataAlt cdc => DataAlt cdc
31 | WeakLitAlt lit => LitAlt lit
32 | WeakDEFAULT => DEFAULT
35 Fixpoint weakTypeToCoreType (wt:WeakType) : CoreType :=
37 | WTyVarTy (weakTypeVar v _) => TyVarTy v
38 | WAppTy (WAppTy WFunTyCon t1) t2 => FunTy (weakTypeToCoreType t1) (weakTypeToCoreType t2)
39 | WAppTy t1 t2 => match (weakTypeToCoreType t1) with
40 | TyConApp tc tys => TyConApp tc (app tys ((weakTypeToCoreType t2)::nil))
41 | t1' => AppTy t1' (weakTypeToCoreType t2)
43 | WTyCon tc => TyConApp tc nil
44 | WTyFunApp tf lt => TyConApp tf (map weakTypeToCoreType lt)
45 | WClassP c lt => PredTy (ClassP c (map weakTypeToCoreType lt))
46 | WIParam n ty => PredTy (IParam n (weakTypeToCoreType ty))
47 | WForAllTy (weakTypeVar wtv _) t => ForAllTy wtv (weakTypeToCoreType t)
48 | WFunTyCon => TyConApp ArrowTyCon nil
49 | WCodeTy (weakTypeVar ec _) t => TyConApp ModalBoxTyCon ((TyVarTy ec)::(weakTypeToCoreType t)::nil)
50 | WCoFunTy t1 t2 t3 => FunTy (PredTy (EqPred (weakTypeToCoreType t1) (weakTypeToCoreType t2)))
51 (weakTypeToCoreType t3)
54 Definition weakCoercionToCoreCoercion (wc:WeakCoercion) : CoreCoercion :=
55 CoreCoercionUnsafeCo (weakTypeToCoreType (fst (weakCoercionTypes wc))) (weakTypeToCoreType (snd (weakCoercionTypes wc))).
57 Fixpoint weakExprToCoreExpr (me:WeakExpr) : @CoreExpr CoreVar :=
59 | WEVar (weakExprVar v _) => CoreEVar v
60 | WELit lit => CoreELit lit
61 | WEApp e1 e2 => CoreEApp (weakExprToCoreExpr e1) (weakExprToCoreExpr e2)
62 | WETyApp e t => CoreEApp (weakExprToCoreExpr e ) (CoreEType (weakTypeToCoreType t))
63 | WECoApp e co => CoreEApp (weakExprToCoreExpr e ) (CoreECoercion (weakCoercionToCoreCoercion co))
64 | WENote n e => CoreENote n (weakExprToCoreExpr e )
65 | WELam (weakExprVar ev _ ) e => CoreELam ev (weakExprToCoreExpr e )
66 | WETyLam (weakTypeVar tv _ ) e => CoreELam tv (weakExprToCoreExpr e )
67 | WECoLam (weakCoerVar cv _ _) e => CoreELam cv (weakExprToCoreExpr e )
68 | WECast e co => CoreECast (weakExprToCoreExpr e ) (weakCoercionToCoreCoercion co)
69 | WEBrak v (weakTypeVar ec _) e t => fold_left CoreEApp
70 ((CoreEType (TyVarTy ec))::
71 (CoreEType (weakTypeToCoreType t))::
72 (weakExprToCoreExpr e)::
75 | WEEsc v (weakTypeVar ec _) e t => fold_left CoreEApp
76 ((CoreEType (TyVarTy ec))::
77 (CoreEType (weakTypeToCoreType t))::
78 (weakExprToCoreExpr e)::
81 | WECSP v (weakTypeVar ec _) e t => fold_left CoreEApp
82 ((CoreEType (TyVarTy ec))::
83 (CoreEType (weakTypeToCoreType t))::
84 (weakExprToCoreExpr e)::
87 | WELet (weakExprVar v _) ve e => mkCoreLet (CoreNonRec v (weakExprToCoreExpr ve)) (weakExprToCoreExpr e)
88 | WECase vscrut escrut tbranches tc types alts =>
89 CoreECase (weakExprToCoreExpr escrut) vscrut (weakTypeToCoreType tbranches)
91 fix mkCaseBranches (alts:Tree
92 ??(WeakAltCon*list WeakTypeVar*list WeakCoerVar*list WeakExprVar*WeakExpr)) :=
95 | T_Branch b1 b2 => app (mkCaseBranches b1) (mkCaseBranches b2)
96 | T_Leaf (Some (ac,tvars,cvars,evars,e)) =>
97 (mkTriple (weakAltConToCoreAltCon ac)
99 (map (fun v:WeakTypeVar => weakVarToCoreVar v) tvars)
100 (map (fun v:WeakCoerVar => weakVarToCoreVar v) cvars))
101 (map (fun v:WeakExprVar => weakVarToCoreVar v) evars))
102 (weakExprToCoreExpr e))::nil
105 | WELetRec mlr e => CoreELet (CoreRec
106 ((fix mkLetBindings (mlr:Tree ??(WeakExprVar * WeakExpr)) :=
109 | T_Leaf (Some (weakExprVar cv _,e)) => (cv,(weakExprToCoreExpr e))::nil
110 | T_Branch b1 b2 => app (mkLetBindings b1) (mkLetBindings b2)
112 (weakExprToCoreExpr e)
115 Definition weakTypeOfWeakExpr (we:WeakExpr) : ???WeakType :=
116 coreTypeToWeakType (coreTypeOfCoreExpr (weakExprToCoreExpr we)).
118 Instance weakExprToString : ToString WeakExpr :=
119 { toString := fun we => toString (weakExprToCoreExpr we) }.