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| author | Simon Peyton Jones <simonpj@microsoft.com> | 2016-06-22 14:12:08 +0100 |
|---|---|---|
| committer | Simon Peyton Jones <simonpj@microsoft.com> | 2016-06-22 22:21:15 +0100 |
| commit | a1b3359636ebfdf3b65c21dc2ae5b5814c012630 (patch) | |
| tree | df54dd48e02950865c5a29262702feda6df4191f | |
| parent | cc92a446d6932cf06364529e71c866289088c59a (diff) | |
| download | haskell-a1b3359636ebfdf3b65c21dc2ae5b5814c012630.tar.gz | |
Remove unused arg to tcSuperClasses
We don't need the FamInstEnvs argument any more.
Just a tiny refactor.
| -rw-r--r-- | compiler/typecheck/TcInstDcls.hs | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/compiler/typecheck/TcInstDcls.hs b/compiler/typecheck/TcInstDcls.hs index 27ccd5a4bf..511a9a67b3 100644 --- a/compiler/typecheck/TcInstDcls.hs +++ b/compiler/typecheck/TcInstDcls.hs @@ -782,10 +782,9 @@ tcInstDecl2 (InstInfo { iSpec = ispec, iBinds = ibinds }) ; let dfun_ev_binds = TcEvBinds dfun_ev_binds_var ; ((sc_meth_ids, sc_meth_binds, sc_meth_implics), tclvl) <- pushTcLevelM $ - do { fam_envs <- tcGetFamInstEnvs - ; (sc_ids, sc_binds, sc_implics) + do { (sc_ids, sc_binds, sc_implics) <- tcSuperClasses dfun_id clas inst_tyvars dfun_ev_vars - inst_tys dfun_ev_binds fam_envs + inst_tys dfun_ev_binds sc_theta' -- Typecheck the methods @@ -958,7 +957,7 @@ Notice that -} tcSuperClasses :: DFunId -> Class -> [TcTyVar] -> [EvVar] -> [TcType] - -> TcEvBinds -> FamInstEnvs + -> TcEvBinds -> TcThetaType -> TcM ([EvVar], LHsBinds Id, Bag Implication) -- Make a new top-level function binding for each superclass, @@ -969,7 +968,7 @@ tcSuperClasses :: DFunId -> Class -> [TcTyVar] -> [EvVar] -> [TcType] -- See Note [Recursive superclasses] for why this is so hard! -- In effect, be build a special-purpose solver for the first step -- of solving each superclass constraint -tcSuperClasses dfun_id cls tyvars dfun_evs inst_tys dfun_ev_binds _fam_envs sc_theta +tcSuperClasses dfun_id cls tyvars dfun_evs inst_tys dfun_ev_binds sc_theta = do { (ids, binds, implics) <- mapAndUnzip3M tc_super (zip sc_theta [fIRST_TAG..]) ; return (ids, listToBag binds, listToBag implics) } where |