import TcMonad
import Inst ( Inst, LIE, emptyLIE, mkLIE, plusLIE, plusLIEs, InstOrigin(..),
- newDicts, tyVarsOfInst, instToId, getFunDepsOfLIE,
- zonkFunDeps
+ newDicts, tyVarsOfInst, instToId,
+ getAllFunDepsOfLIE, getIPsOfLIE, zonkFunDeps
)
import TcEnv ( tcExtendLocalValEnv,
newSpecPragmaId, newLocalId,
import Id ( Id, mkVanillaId, setInlinePragma )
import Var ( idType, idName )
-import IdInfo ( IdInfo, vanillaIdInfo, setInlinePragInfo, InlinePragInfo(..) )
+import IdInfo ( setInlinePragInfo, InlinePragInfo(..) )
import Name ( Name, getName, getOccName, getSrcLoc )
import NameSet
import Type ( mkTyVarTy, tyVarsOfTypes, mkTyConApp,
splitSigmaTy, mkForAllTys, mkFunTys, getTyVar,
- mkDictTy, splitRhoTy, mkForAllTy, isUnLiftedType,
+ mkPredTy, splitRhoTy, mkForAllTy, isUnLiftedType,
isUnboxedType, unboxedTypeKind, boxedTypeKind
)
import FunDeps ( tyVarFunDep, oclose )
-- SIMPLIFY THE LIE
tcExtendGlobalTyVars tyvars_not_to_gen (
- if null real_tyvars_to_gen_list then
- -- No polymorphism, so no need to simplify context
+ let ips = getIPsOfLIE lie_req in
+ if null real_tyvars_to_gen_list && null ips then
+ -- No polymorphism, and no IPs, so no need to simplify context
returnTc (lie_req, EmptyMonoBinds, [])
else
case maybe_sig_theta of
-- NB: no signatures => no polymorphic recursion, so no
-- need to use lie_avail (which will be empty anyway)
tcSimplify (text "tcBinds1" <+> ppr binder_names)
- top_lvl real_tyvars_to_gen lie_req `thenTc` \ (lie_free, dict_binds, lie_bound) ->
+ real_tyvars_to_gen lie_req `thenTc` \ (lie_free, dict_binds, lie_bound) ->
returnTc (lie_free, dict_binds, map instToId (bagToList lie_bound))
Just (sig_theta, lie_avail) ->
-- BUILD RESULTS
returnTc (
+ -- pprTrace "binding.." (ppr ((dicts_bound, dict_binds), exports, [idType poly_id | (_, poly_id, _) <- exports])) $
AbsBinds real_tyvars_to_gen_list
dicts_bound
exports
in
if is_unrestricted
then
- let fds = concatMap snd (getFunDepsOfLIE lie) in
+ let fds = getAllFunDepsOfLIE lie in
zonkFunDeps fds `thenNF_Tc` \ fds' ->
let tvFundep = tyVarFunDep fds'
extended_tyvars = oclose tvFundep body_tyvars in
recoverNF_Tc (returnNF_Tc (emptyVarSet, body_tyvars)) $
discardErrsTc $
- tcSimplify (text "getTVG") NotTopLevel body_tyvars lie `thenTc` \ (_, _, constrained_dicts) ->
+ tcSimplify (text "getTVG") body_tyvars lie `thenTc` \ (_, _, constrained_dicts) ->
let
-- ASSERT: dicts_sig is already zonked!
constrained_tyvars = foldrBag (unionVarSet . tyVarsOfInst) emptyVarSet constrained_dicts
= tcAddSrcLoc src_loc $
checkTc (null theta) (mainContextsErr id)
- mk_dict_tys theta = [mkDictTy c ts | (c,ts) <- theta]
+ mk_dict_tys theta = map mkPredTy theta
sig_msg id tidy_ty = sep [ptext SLIT("When checking the type signature"),
nest 4 (ppr id <+> dcolon <+> ppr tidy_ty)]