2 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
4 \section[IdUtils]{Constructing PrimOp Ids}
7 module IdUtils ( primOpName ) where
9 #include "HsVersions.h"
12 import CoreUnfold ( UnfoldingGuidance(..), Unfolding, mkUnfolding )
13 import Id ( mkPrimitiveId )
14 import IdInfo -- quite a few things
16 import Name ( mkWiredInIdName, Name )
17 import PrimOp ( primOpInfo, tagOf_PrimOp, primOp_str,
18 PrimOpInfo(..), PrimOpResultInfo(..), PrimOp )
19 import PrelMods ( gHC__ )
20 import Type ( mkForAllTys, mkFunTy, mkFunTys, mkTyVarTy, mkTyConApp )
21 import TysWiredIn ( boolTy )
22 import Unique ( mkPrimOpIdUnique )
27 primOpName :: PrimOp -> Name
29 = case (primOpInfo op) of
31 mk_prim_name op str [] [ty,ty] (dyadic_fun_ty ty) 2
34 mk_prim_name op str [] [ty] (monadic_fun_ty ty) 1
37 mk_prim_name op str [] [ty,ty] (compare_fun_ty ty) 2
39 Coercing str ty1 ty2 ->
40 mk_prim_name op str [] [ty1] (ty1 `mkFunTy` ty2) 1
42 PrimResult str tyvars arg_tys prim_tycon kind res_tys ->
46 (mkForAllTys tyvars (mkFunTys arg_tys (mkTyConApp prim_tycon res_tys)))
47 (length arg_tys) -- arity
49 AlgResult str tyvars arg_tys tycon res_tys ->
53 (mkForAllTys tyvars (mkFunTys arg_tys (mkTyConApp tycon res_tys)))
54 (length arg_tys) -- arity
56 mk_prim_name prim_op occ_name tyvar_tmpls arg_tys ty arity
59 key = mkPrimOpIdUnique (IBOX(tagOf_PrimOp prim_op))
60 name = mkWiredInIdName key gHC__ occ_name the_id
61 the_id = mkPrimitiveId name ty prim_op
65 dyadic_fun_ty ty = mkFunTys [ty, ty] ty
66 monadic_fun_ty ty = ty `mkFunTy` ty
67 compare_fun_ty ty = mkFunTys [ty, ty] boolTy