+
+-- | Get the width of a SizedWord type
+sized_word_len :: Type.Type -> Int
+sized_word_len ty =
+ eval_tfp_int len
+ where
+ (tycon, args) = Type.splitTyConApp ty
+ [len] = args
+
+-- | Evaluate a core Type representing type level int from the TypeLevel
+-- library to a real int.
+eval_type_level_int :: Type.Type -> Int
+eval_type_level_int ty =
+ unsafeRunGhc $ do
+ -- Automatically import modules for any fully qualified identifiers
+ setDynFlag DynFlags.Opt_ImplicitImportQualified
+
+ let to_int_name = mkRdrName "Data.TypeLevel.Num.Sets" "toInt"
+ let to_int = SrcLoc.noLoc $ HsExpr.HsVar to_int_name
+ let undef = hsTypedUndef $ coreToHsType ty
+ let app = HsExpr.HsApp (to_int) (undef)
+
+ core <- toCore [] app
+ execCore core
+
+-- | Get the length of a FSVec type
+fsvec_len :: Type.Type -> Int
+fsvec_len ty =
+ eval_type_level_int len
+ where
+ (tycon, args) = Type.splitTyConApp ty
+ [len, el_ty] = args
+
+-- Is this a wild binder?
+is_wild :: CoreSyn.CoreBndr -> Bool
+-- wild binders have a particular unique, that we copied from MkCore.lhs to
+-- here. However, this comparison didn't work, so we'll just check the
+-- occstring for now... TODO
+--(Var.varUnique bndr) == (Unique.mkBuiltinUnique 1)
+is_wild bndr = "wild" == (OccName.occNameString . Name.nameOccName . Var.varName) bndr