2 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
4 \section[IdUtils]{Constructing PrimOp Ids}
7 #include "HsVersions.h"
9 module IdUtils ( primOpName ) where
12 IMPORT_DELOOPER(PrelLoop) -- here for paranoia checking
13 IMPORT_DELOOPER(IdLoop) (SpecEnv)
16 import CoreUnfold ( UnfoldingGuidance(..), Unfolding, mkUnfolding )
17 import Id ( mkPrimitiveId, mkTemplateLocals )
18 import IdInfo -- quite a few things
20 import Name ( mkWiredInIdName, Name )
21 import PrimOp ( primOpInfo, tagOf_PrimOp, primOp_str,
22 PrimOpInfo(..), PrimOpResultInfo(..), PrimOp )
23 import PrelMods ( gHC__ )
24 import Type ( mkForAllTys, mkFunTy, mkFunTys, mkTyVarTy, applyTyCon )
25 import TysWiredIn ( boolTy )
26 import Unique ( mkPrimOpIdUnique )
31 primOpName :: PrimOp -> Name
33 = case (primOpInfo op) of
35 mk_prim_name op str [] [ty,ty] (dyadic_fun_ty ty) 2
38 mk_prim_name op str [] [ty] (monadic_fun_ty ty) 1
41 mk_prim_name op str [] [ty,ty] (compare_fun_ty ty) 2
43 Coercing str ty1 ty2 ->
44 mk_prim_name op str [] [ty1] (ty1 `mkFunTy` ty2) 1
46 PrimResult str tyvars arg_tys prim_tycon kind res_tys ->
50 (mkForAllTys tyvars (mkFunTys arg_tys (applyTyCon prim_tycon res_tys)))
51 (length arg_tys) -- arity
53 AlgResult str tyvars arg_tys tycon res_tys ->
57 (mkForAllTys tyvars (mkFunTys arg_tys (applyTyCon tycon res_tys)))
58 (length arg_tys) -- arity
60 mk_prim_name prim_op occ_name tyvar_tmpls arg_tys ty arity
63 key = mkPrimOpIdUnique (IBOX(tagOf_PrimOp prim_op))
64 name = mkWiredInIdName key gHC__ occ_name the_id
65 the_id = mkPrimitiveId name ty prim_op
69 dyadic_fun_ty ty = mkFunTys [ty, ty] ty
70 monadic_fun_ty ty = ty `mkFunTy` ty
71 compare_fun_ty ty = mkFunTys [ty, ty] boolTy