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 ( Unfolding )
13 import Id ( mkPrimitiveId )
14 import IdInfo -- quite a few things
16 import Name ( mkWiredInIdName, Name )
17 import PrimOp ( primOpInfo, tagOf_PrimOp, PrimOpInfo(..), PrimOp )
18 import PrelMods ( pREL_GHC )
19 import Type ( mkForAllTys, mkFunTy, mkFunTys, mkTyConApp )
20 import TysWiredIn ( boolTy )
21 import Unique ( mkPrimOpIdUnique )
26 primOpName :: PrimOp -> Name
28 = case (primOpInfo op) of
30 mk_prim_name op str [] [ty,ty] (dyadic_fun_ty ty) 2
33 mk_prim_name op str [] [ty] (monadic_fun_ty ty) 1
36 mk_prim_name op str [] [ty,ty] (compare_fun_ty ty) 2
38 Coercing str ty1 ty2 ->
39 mk_prim_name op str [] [ty1] (ty1 `mkFunTy` ty2) 1
41 PrimResult str tyvars arg_tys prim_tycon kind res_tys ->
45 (mkForAllTys tyvars (mkFunTys arg_tys (mkTyConApp prim_tycon res_tys)))
46 (length arg_tys) -- arity
48 AlgResult str tyvars arg_tys tycon res_tys ->
52 (mkForAllTys tyvars (mkFunTys arg_tys (mkTyConApp tycon res_tys)))
53 (length arg_tys) -- arity
55 mk_prim_name prim_op occ_name tyvar_tmpls arg_tys ty arity
58 key = mkPrimOpIdUnique (IBOX(tagOf_PrimOp prim_op))
59 name = mkWiredInIdName key pREL_GHC occ_name the_id
60 the_id = mkPrimitiveId name ty prim_op
64 dyadic_fun_ty ty = mkFunTys [ty, ty] ty
65 monadic_fun_ty ty = ty `mkFunTy` ty
66 compare_fun_ty ty = mkFunTys [ty, ty] boolTy