X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Ftypecheck%2FTcHsSyn.lhs;h=6acef37dd333c5091fde5fa3b5533eb7e3050fd9;hb=4161ba13916463f8e67259498eacf22744160e1f;hp=ea791252223c3b4270811e3f82f73ddd5f7a561d;hpb=61462d62ff77ec16a2bd09ffebeacbf88d4a8fb4;p=ghc-hetmet.git diff --git a/ghc/compiler/typecheck/TcHsSyn.lhs b/ghc/compiler/typecheck/TcHsSyn.lhs index ea79125..6acef37 100644 --- a/ghc/compiler/typecheck/TcHsSyn.lhs +++ b/ghc/compiler/typecheck/TcHsSyn.lhs @@ -1,5 +1,5 @@ % -% (c) The AQUA Project, Glasgow University, 1996 +% (c) The AQUA Project, Glasgow University, 1996-1998 % \section[TcHsSyn]{Specialisations of the @HsSyn@ syntax for the typechecker} @@ -7,69 +7,53 @@ This module is an extension of @HsSyn@ syntax, for use in the type checker. \begin{code} -#include "HsVersions.h" - module TcHsSyn ( - SYN_IE(TcIdBndr), TcIdOcc(..), + TcMonoBinds, TcHsBinds, TcPat, + TcExpr, TcGRHSs, TcGRHS, TcMatch, + TcStmt, TcArithSeqInfo, TcRecordBinds, + TcHsModule, TcCoreExpr, TcDictBinds, + TcForeignExportDecl, - SYN_IE(TcMonoBinds), SYN_IE(TcHsBinds), SYN_IE(TcPat), - SYN_IE(TcExpr), SYN_IE(TcGRHSsAndBinds), SYN_IE(TcGRHS), SYN_IE(TcMatch), - SYN_IE(TcStmt), SYN_IE(TcArithSeqInfo), SYN_IE(TcRecordBinds), - SYN_IE(TcHsModule), SYN_IE(TcCoreExpr), SYN_IE(TcDictBinds), - - SYN_IE(TypecheckedHsBinds), - SYN_IE(TypecheckedMonoBinds), SYN_IE(TypecheckedPat), - SYN_IE(TypecheckedHsExpr), SYN_IE(TypecheckedArithSeqInfo), - SYN_IE(TypecheckedStmt), - SYN_IE(TypecheckedMatch), SYN_IE(TypecheckedHsModule), - SYN_IE(TypecheckedGRHSsAndBinds), SYN_IE(TypecheckedGRHS), - SYN_IE(TypecheckedRecordBinds), SYN_IE(TypecheckedDictBinds), - - mkHsTyApp, mkHsDictApp, - mkHsTyLam, mkHsDictLam, - tcIdType, tcIdTyVars, - - zonkBinds, zonkMonoBinds + TypecheckedHsBinds, TypecheckedRuleDecl, + TypecheckedMonoBinds, TypecheckedPat, + TypecheckedHsExpr, TypecheckedArithSeqInfo, + TypecheckedStmt, TypecheckedForeignDecl, + TypecheckedMatch, TypecheckedHsModule, + TypecheckedGRHSs, TypecheckedGRHS, + TypecheckedRecordBinds, TypecheckedDictBinds, + + mkHsTyApp, mkHsDictApp, mkHsConApp, + mkHsTyLam, mkHsDictLam, mkHsLet, + idsToMonoBinds, + + -- re-exported from TcEnv + TcId, tcInstId, + + zonkTopBinds, zonkId, zonkIdOcc, + zonkForeignExports, zonkRules ) where -IMP_Ubiq(){-uitous-} +#include "HsVersions.h" -- friends: import HsSyn -- oodles of it -import Id ( GenId(..), IdDetails, -- Can meddle modestly with Ids - SYN_IE(DictVar), idType, - SYN_IE(IdEnv), growIdEnvList, lookupIdEnv, - SYN_IE(Id) - ) -- others: -import Name ( Name{--O only-}, NamedThing(..) ) +import Id ( idName, idType, isLocalId, idUnfolding, setIdType, isIP, Id ) +import DataCon ( dataConWrapId ) +import TcEnv ( tcLookupGlobal_maybe, tcExtendGlobalValEnv, + TcEnv, TcId, tcInstId + ) + import TcMonad -import TcType ( SYN_IE(TcType), TcMaybe, SYN_IE(TcTyVar), - zonkTcTypeToType, zonkTcTyVarToTyVar +import TcType ( zonkTcTypeToType, zonkTcTyVarToTyVar, zonkTcType, zonkTcSigTyVars ) -import Usage ( SYN_IE(UVar) ) -import Util ( zipEqual, panic, - pprPanic, pprTrace -#ifdef DEBUG - , assertPanic -#endif - ) - -import PprType ( GenType, GenTyVar ) -- instances -import Type ( mkTyVarTy, tyVarsOfType, SYN_IE(Type) ) -import TyVar ( GenTyVar {- instances -}, SYN_IE(TyVar), - SYN_IE(TyVarEnv), growTyVarEnvList, emptyTyVarSet ) -import TysPrim ( voidTy ) -import CoreSyn ( GenCoreExpr ) -import Unique ( Unique ) -- instances -import UniqFM -import PprStyle -import Pretty - -#if __GLASGOW_HASKELL__ >= 202 +import CoreSyn ( Expr ) +import CoreUnfold( unfoldingTemplate ) +import BasicTypes ( RecFlag(..) ) +import Bag import Outputable -#endif +import HscTypes ( TyThing(..) ) \end{code} @@ -84,37 +68,37 @@ At the end of type checking we zonk everything to @Typechecked...@ datatypes, which have immutable type variables in them. \begin{code} -type TcIdBndr s = GenId (TcType s) -- Binders are all TcTypes -data TcIdOcc s = TcId (TcIdBndr s) -- Bindees may be either - | RealId Id - -type TcHsBinds s = HsBinds (TcTyVar s) UVar (TcIdOcc s) (TcPat s) -type TcMonoBinds s = MonoBinds (TcTyVar s) UVar (TcIdOcc s) (TcPat s) -type TcDictBinds s = TcMonoBinds s -type TcPat s = OutPat (TcTyVar s) UVar (TcIdOcc s) -type TcExpr s = HsExpr (TcTyVar s) UVar (TcIdOcc s) (TcPat s) -type TcGRHSsAndBinds s = GRHSsAndBinds (TcTyVar s) UVar (TcIdOcc s) (TcPat s) -type TcGRHS s = GRHS (TcTyVar s) UVar (TcIdOcc s) (TcPat s) -type TcMatch s = Match (TcTyVar s) UVar (TcIdOcc s) (TcPat s) -type TcStmt s = Stmt (TcTyVar s) UVar (TcIdOcc s) (TcPat s) -type TcArithSeqInfo s = ArithSeqInfo (TcTyVar s) UVar (TcIdOcc s) (TcPat s) -type TcRecordBinds s = HsRecordBinds (TcTyVar s) UVar (TcIdOcc s) (TcPat s) -type TcHsModule s = HsModule (TcTyVar s) UVar (TcIdOcc s) (TcPat s) - -type TcCoreExpr s = GenCoreExpr (TcIdOcc s) (TcIdOcc s) (TcTyVar s) UVar - -type TypecheckedPat = OutPat TyVar UVar Id -type TypecheckedMonoBinds = MonoBinds TyVar UVar Id TypecheckedPat +type TcHsBinds = HsBinds TcId TcPat +type TcMonoBinds = MonoBinds TcId TcPat +type TcDictBinds = TcMonoBinds +type TcPat = OutPat TcId +type TcExpr = HsExpr TcId TcPat +type TcGRHSs = GRHSs TcId TcPat +type TcGRHS = GRHS TcId TcPat +type TcMatch = Match TcId TcPat +type TcStmt = Stmt TcId TcPat +type TcArithSeqInfo = ArithSeqInfo TcId TcPat +type TcRecordBinds = HsRecordBinds TcId TcPat +type TcHsModule = HsModule TcId TcPat + +type TcCoreExpr = Expr TcId +type TcForeignExportDecl = ForeignDecl TcId +type TcRuleDecl = RuleDecl TcId TcPat + +type TypecheckedPat = OutPat Id +type TypecheckedMonoBinds = MonoBinds Id TypecheckedPat type TypecheckedDictBinds = TypecheckedMonoBinds -type TypecheckedHsBinds = HsBinds TyVar UVar Id TypecheckedPat -type TypecheckedHsExpr = HsExpr TyVar UVar Id TypecheckedPat -type TypecheckedArithSeqInfo = ArithSeqInfo TyVar UVar Id TypecheckedPat -type TypecheckedStmt = Stmt TyVar UVar Id TypecheckedPat -type TypecheckedMatch = Match TyVar UVar Id TypecheckedPat -type TypecheckedGRHSsAndBinds = GRHSsAndBinds TyVar UVar Id TypecheckedPat -type TypecheckedGRHS = GRHS TyVar UVar Id TypecheckedPat -type TypecheckedRecordBinds = HsRecordBinds TyVar UVar Id TypecheckedPat -type TypecheckedHsModule = HsModule TyVar UVar Id TypecheckedPat +type TypecheckedHsBinds = HsBinds Id TypecheckedPat +type TypecheckedHsExpr = HsExpr Id TypecheckedPat +type TypecheckedArithSeqInfo = ArithSeqInfo Id TypecheckedPat +type TypecheckedStmt = Stmt Id TypecheckedPat +type TypecheckedMatch = Match Id TypecheckedPat +type TypecheckedGRHSs = GRHSs Id TypecheckedPat +type TypecheckedGRHS = GRHS Id TypecheckedPat +type TypecheckedRecordBinds = HsRecordBinds Id TypecheckedPat +type TypecheckedHsModule = HsModule Id TypecheckedPat +type TypecheckedForeignDecl = ForeignDecl Id +type TypecheckedRuleDecl = RuleDecl Id TypecheckedPat \end{code} \begin{code} @@ -130,30 +114,18 @@ mkHsTyLam tyvars expr = TyLam tyvars expr mkHsDictLam [] expr = expr mkHsDictLam dicts expr = DictLam dicts expr -tcIdType :: TcIdOcc s -> TcType s -tcIdType (TcId id) = idType id -tcIdType (RealId id) = pprPanic "tcIdType:" (ppr PprDebug id) +mkHsLet EmptyMonoBinds expr = expr +mkHsLet mbinds expr = HsLet (MonoBind mbinds [] Recursive) expr -tcIdTyVars (TcId id) = tyVarsOfType (idType id) -tcIdTyVars (RealId _) = emptyTyVarSet -- Top level Ids have no free type variables -\end{code} +mkHsConApp data_con tys args = foldl HsApp (HsVar (dataConWrapId data_con) `mkHsTyApp` tys) args -\begin{code} -instance Eq (TcIdOcc s) where - (TcId id1) == (TcId id2) = id1 == id2 - (RealId id1) == (RealId id2) = id1 == id2 - _ == _ = False - -instance Outputable (TcIdOcc s) where - ppr sty (TcId id) = ppr sty id - ppr sty (RealId id) = ppr sty id - -instance NamedThing (TcIdOcc s) where - getName (TcId id) = getName id - getName (RealId id) = getName id +idsToMonoBinds :: [Id] -> TcMonoBinds +idsToMonoBinds ids + = andMonoBindList [ CoreMonoBind id (unfoldingTemplate (idUnfolding id)) + | id <- ids + ] \end{code} - %************************************************************************ %* * \subsection[BackSubst-HsBinds]{Running a substitution over @HsBinds@} @@ -164,164 +136,182 @@ This zonking pass runs over the bindings a) to convert TcTyVars to TyVars etc, dereferencing any bindings etc b) convert unbound TcTyVar to Void + c) convert each TcId to an Id by zonking its type -We pass an environment around so that - a) we know which TyVars are unbound - b) we maintain sharing; eg an Id is zonked at its binding site and they - all occurrences of that Id point to the common zonked copy +The type variables are converted by binding mutable tyvars to immutable ones +and then zonking as normal. + +The Ids are converted by binding them in the normal Tc envt; that +way we maintain sharing; eg an Id is zonked at its binding site and they +all occurrences of that Id point to the common zonked copy It's all pretty boring stuff, because HsSyn is such a large type, and the environment manipulation is tiresome. - \begin{code} -zonkIdBndr :: TyVarEnv Type -> TcIdOcc s -> NF_TcM s Id -zonkIdBndr te (TcId (Id u n ty details prags info)) - = zonkTcTypeToType te ty `thenNF_Tc` \ ty' -> - returnNF_Tc (Id u n ty' details prags info) - -zonkIdBndr te (RealId id) = returnNF_Tc id - -zonkIdOcc :: IdEnv Id -> TcIdOcc s -> Id -zonkIdOcc ve (RealId id) = id -zonkIdOcc ve (TcId id) = case (lookupIdEnv ve id) of - Just id' -> id' - Nothing -> pprTrace "zonkIdOcc: " (ppr PprDebug id) $ - Id u n voidTy details prags info - where - Id u n _ details prags info = id - -extend_ve ve ids = growIdEnvList ve [(id,id) | id <- ids] -extend_te te tyvars = growTyVarEnvList te [(tyvar, mkTyVarTy tyvar) | tyvar <- tyvars] +-- zonkId is used *during* typechecking just to zonk the Id's type +zonkId :: TcId -> NF_TcM TcId +zonkId id + = zonkTcType (idType id) `thenNF_Tc` \ ty' -> + returnNF_Tc (setIdType id ty') + +-- zonkIdBndr is used *after* typechecking to get the Id's type +-- to its final form. The TyVarEnv give +zonkIdBndr :: TcId -> NF_TcM Id +zonkIdBndr id + = zonkTcTypeToType (idType id) `thenNF_Tc` \ ty' -> + returnNF_Tc (setIdType id ty') + +zonkIdOcc :: TcId -> NF_TcM Id +zonkIdOcc id + | not (isLocalId id) || isIP id + -- We're avoiding looking up superclass selectors + -- and constructors; zonking them is a no-op anyway, and the + -- superclass selectors aren't in the environment anyway. + = returnNF_Tc id + | otherwise + = tcLookupGlobal_maybe (idName id) `thenNF_Tc` \ maybe_id' -> + let + new_id = case maybe_id' of + Just (AnId id') -> id' + other -> pprTrace "zonkIdOcc:" (ppr id) id + in + returnNF_Tc new_id \end{code} \begin{code} -zonkBinds :: TyVarEnv Type -> IdEnv Id - -> TcHsBinds s -> NF_TcM s (TypecheckedHsBinds, IdEnv Id) - -zonkBinds te ve EmptyBinds = returnNF_Tc (EmptyBinds, ve) - -zonkBinds te ve (ThenBinds binds1 binds2) - = zonkBinds te ve binds1 `thenNF_Tc` \ (new_binds1, ve1) -> - zonkBinds te ve1 binds2 `thenNF_Tc` \ (new_binds2, ve2) -> - returnNF_Tc (ThenBinds new_binds1 new_binds2, ve2) - -zonkBinds te ve (MonoBind bind sigs is_rec) - = ASSERT( null sigs ) - fixNF_Tc (\ ~(_,new_ve) -> - zonkMonoBinds te new_ve bind `thenNF_Tc` \ (new_bind, new_ids) -> - returnNF_Tc (MonoBind new_bind [] is_rec, extend_ve ve new_ids) - ) +zonkTopBinds :: TcMonoBinds -> NF_TcM (TypecheckedMonoBinds, TcEnv) +zonkTopBinds binds -- Top level is implicitly recursive + = fixNF_Tc (\ ~(_, new_ids) -> + tcExtendGlobalValEnv (bagToList new_ids) $ + zonkMonoBinds binds `thenNF_Tc` \ (binds', new_ids) -> + tcGetEnv `thenNF_Tc` \ env -> + returnNF_Tc ((binds', env), new_ids) + ) `thenNF_Tc` \ (stuff, _) -> + returnNF_Tc stuff + +zonkBinds :: TcHsBinds -> NF_TcM (TypecheckedHsBinds, TcEnv) + +zonkBinds binds + = go binds (\ binds' -> tcGetEnv `thenNF_Tc` \ env -> + returnNF_Tc (binds', env)) + where + -- go :: TcHsBinds + -- -> (TypecheckedHsBinds + -- -> NF_TcM (TypecheckedHsBinds, TcEnv) + -- ) + -- -> NF_TcM (TypecheckedHsBinds, TcEnv) + + go (ThenBinds b1 b2) thing_inside = go b1 $ \ b1' -> + go b2 $ \ b2' -> + thing_inside (b1' `ThenBinds` b2') + + go EmptyBinds thing_inside = thing_inside EmptyBinds + + go (MonoBind bind sigs is_rec) thing_inside + = ASSERT( null sigs ) + fixNF_Tc (\ ~(_, new_ids) -> + tcExtendGlobalValEnv (bagToList new_ids) $ + zonkMonoBinds bind `thenNF_Tc` \ (new_bind, new_ids) -> + thing_inside (mkMonoBind new_bind [] is_rec) `thenNF_Tc` \ stuff -> + returnNF_Tc (stuff, new_ids) + ) `thenNF_Tc` \ (stuff, _) -> + returnNF_Tc stuff \end{code} \begin{code} ------------------------------------------------------------------------- -zonkMonoBinds :: TyVarEnv Type -> IdEnv Id - -> TcMonoBinds s -> NF_TcM s (TypecheckedMonoBinds, [Id]) +zonkMonoBinds :: TcMonoBinds + -> NF_TcM (TypecheckedMonoBinds, Bag Id) -zonkMonoBinds te ve EmptyMonoBinds = returnNF_Tc (EmptyMonoBinds, []) +zonkMonoBinds EmptyMonoBinds = returnNF_Tc (EmptyMonoBinds, emptyBag) -zonkMonoBinds te ve (AndMonoBinds mbinds1 mbinds2) - = zonkMonoBinds te ve mbinds1 `thenNF_Tc` \ (new_mbinds1, ids1) -> - zonkMonoBinds te ve mbinds2 `thenNF_Tc` \ (new_mbinds2, ids2) -> - returnNF_Tc (AndMonoBinds new_mbinds1 new_mbinds2, ids1 ++ ids2) +zonkMonoBinds (AndMonoBinds mbinds1 mbinds2) + = zonkMonoBinds mbinds1 `thenNF_Tc` \ (b1', ids1) -> + zonkMonoBinds mbinds2 `thenNF_Tc` \ (b2', ids2) -> + returnNF_Tc (b1' `AndMonoBinds` b2', + ids1 `unionBags` ids2) -zonkMonoBinds te ve (PatMonoBind pat grhss_w_binds locn) - = zonkPat te ve pat `thenNF_Tc` \ (new_pat, ids) -> - zonkGRHSsAndBinds te ve grhss_w_binds `thenNF_Tc` \ new_grhss_w_binds -> - returnNF_Tc (PatMonoBind new_pat new_grhss_w_binds locn, ids) +zonkMonoBinds (PatMonoBind pat grhss locn) + = zonkPat pat `thenNF_Tc` \ (new_pat, ids) -> + zonkGRHSs grhss `thenNF_Tc` \ new_grhss -> + returnNF_Tc (PatMonoBind new_pat new_grhss locn, ids) -zonkMonoBinds te ve (VarMonoBind var expr) - = zonkIdBndr te var `thenNF_Tc` \ new_var -> - zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - returnNF_Tc (VarMonoBind new_var new_expr, [new_var]) +zonkMonoBinds (VarMonoBind var expr) + = zonkIdBndr var `thenNF_Tc` \ new_var -> + zonkExpr expr `thenNF_Tc` \ new_expr -> + returnNF_Tc (VarMonoBind new_var new_expr, unitBag new_var) -zonkMonoBinds te ve (CoreMonoBind var core_expr) - = zonkIdBndr te var `thenNF_Tc` \ new_var -> - returnNF_Tc (CoreMonoBind new_var core_expr, [new_var]) +zonkMonoBinds (CoreMonoBind var core_expr) + = zonkIdBndr var `thenNF_Tc` \ new_var -> + returnNF_Tc (CoreMonoBind new_var core_expr, unitBag new_var) -zonkMonoBinds te ve (FunMonoBind var inf ms locn) - = zonkIdBndr te var `thenNF_Tc` \ new_var -> - mapNF_Tc (zonkMatch te ve) ms `thenNF_Tc` \ new_ms -> - returnNF_Tc (FunMonoBind new_var inf new_ms locn, [new_var]) +zonkMonoBinds (FunMonoBind var inf ms locn) + = zonkIdBndr var `thenNF_Tc` \ new_var -> + mapNF_Tc zonkMatch ms `thenNF_Tc` \ new_ms -> + returnNF_Tc (FunMonoBind new_var inf new_ms locn, unitBag new_var) -zonkMonoBinds te ve (AbsBinds tyvars dicts exports val_bind) +zonkMonoBinds (AbsBinds tyvars dicts exports inlines val_bind) = mapNF_Tc zonkTcTyVarToTyVar tyvars `thenNF_Tc` \ new_tyvars -> - let - new_te = extend_te te new_tyvars - in - mapNF_Tc (zonkIdBndr new_te) dicts `thenNF_Tc` \ new_dicts -> + -- No need to extend tyvar env: the effects are + -- propagated through binding the tyvars themselves - let - ve1 = extend_ve ve new_dicts - in - fixNF_Tc (\ ~(_, _, ve2) -> - zonkMonoBinds new_te ve2 val_bind `thenNF_Tc` \ (new_val_bind, new_ids) -> - mapNF_Tc (zonkExport new_te ve2) exports `thenNF_Tc` \ new_exports -> - returnNF_Tc (new_val_bind, new_exports, extend_ve ve1 new_ids) - ) `thenNF_Tc ` \ (new_val_bind, new_exports, _) -> + mapNF_Tc zonkIdBndr dicts `thenNF_Tc` \ new_dicts -> + tcExtendGlobalValEnv new_dicts $ + fixNF_Tc (\ ~(_, _, val_bind_ids) -> + tcExtendGlobalValEnv (bagToList val_bind_ids) $ + zonkMonoBinds val_bind `thenNF_Tc` \ (new_val_bind, val_bind_ids) -> + mapNF_Tc zonkExport exports `thenNF_Tc` \ new_exports -> + returnNF_Tc (new_val_bind, new_exports, val_bind_ids) + ) `thenNF_Tc ` \ (new_val_bind, new_exports, _) -> let - new_globals = [global | (_, global, local) <- new_exports] + new_globals = listToBag [global | (_, global, local) <- new_exports] in - returnNF_Tc (AbsBinds new_tyvars new_dicts new_exports new_val_bind, + returnNF_Tc (AbsBinds new_tyvars new_dicts new_exports inlines new_val_bind, new_globals) - where - zonkExport te ve (tyvars, global, local) - = mapNF_Tc zonkTcTyVarToTyVar tyvars `thenNF_Tc` \ new_tyvars -> - zonkIdBndr te global `thenNF_Tc` \ new_global -> - returnNF_Tc (new_tyvars, new_global, zonkIdOcc ve local) + zonkExport (tyvars, global, local) + = zonkTcSigTyVars tyvars `thenNF_Tc` \ new_tyvars -> + -- This isn't the binding occurrence of these tyvars + -- but they should *be* tyvars. Hence zonkTcSigTyVars. + zonkIdBndr global `thenNF_Tc` \ new_global -> + zonkIdOcc local `thenNF_Tc` \ new_local -> + returnNF_Tc (new_tyvars, new_global, new_local) \end{code} %************************************************************************ %* * -\subsection[BackSubst-Match-GRHSs]{Match and GRHSsAndBinds} +\subsection[BackSubst-Match-GRHSs]{Match and GRHSs} %* * %************************************************************************ \begin{code} -zonkMatch :: TyVarEnv Type -> IdEnv Id - -> TcMatch s -> NF_TcM s TypecheckedMatch +zonkMatch :: TcMatch -> NF_TcM TypecheckedMatch -zonkMatch te ve (PatMatch pat match) - = zonkPat te ve pat `thenNF_Tc` \ (new_pat, ids) -> - let - new_ve = extend_ve ve ids - in - zonkMatch te new_ve match `thenNF_Tc` \ new_match -> - returnNF_Tc (PatMatch new_pat new_match) - -zonkMatch te ve (GRHSMatch grhss_w_binds) - = zonkGRHSsAndBinds te ve grhss_w_binds `thenNF_Tc` \ new_grhss_w_binds -> - returnNF_Tc (GRHSMatch new_grhss_w_binds) - -zonkMatch te ve (SimpleMatch expr) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - returnNF_Tc (SimpleMatch new_expr) +zonkMatch (Match _ pats _ grhss) + = zonkPats pats `thenNF_Tc` \ (new_pats, new_ids) -> + tcExtendGlobalValEnv (bagToList new_ids) $ + zonkGRHSs grhss `thenNF_Tc` \ new_grhss -> + returnNF_Tc (Match [] new_pats Nothing new_grhss) ------------------------------------------------------------------------- -zonkGRHSsAndBinds :: TyVarEnv Type -> IdEnv Id - -> TcGRHSsAndBinds s - -> NF_TcM s TypecheckedGRHSsAndBinds +zonkGRHSs :: TcGRHSs + -> NF_TcM TypecheckedGRHSs -zonkGRHSsAndBinds te ve (GRHSsAndBindsOut grhss binds ty) - = zonkBinds te ve binds `thenNF_Tc` \ (new_binds, new_ve) -> +zonkGRHSs (GRHSs grhss binds (Just ty)) + = zonkBinds binds `thenNF_Tc` \ (new_binds, new_env) -> + tcSetEnv new_env $ let - zonk_grhs (GRHS guard expr locn) - = zonkStmts te new_ve guard `thenNF_Tc` \ (new_guard, new_ve2) -> - zonkExpr te new_ve2 expr `thenNF_Tc` \ new_expr -> - returnNF_Tc (GRHS new_guard new_expr locn) - - zonk_grhs (OtherwiseGRHS expr locn) - = zonkExpr te new_ve expr `thenNF_Tc` \ new_expr -> - returnNF_Tc (OtherwiseGRHS new_expr locn) + zonk_grhs (GRHS guarded locn) + = zonkStmts guarded `thenNF_Tc` \ new_guarded -> + returnNF_Tc (GRHS new_guarded locn) in mapNF_Tc zonk_grhs grhss `thenNF_Tc` \ new_grhss -> - zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - returnNF_Tc (GRHSsAndBindsOut new_grhss new_binds new_ty) + zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + returnNF_Tc (GRHSs new_grhss new_binds (Just new_ty)) \end{code} %************************************************************************ @@ -331,232 +321,241 @@ zonkGRHSsAndBinds te ve (GRHSsAndBindsOut grhss binds ty) %************************************************************************ \begin{code} -{- -zonkExpr :: TyVarEnv Type -> IdEnv Id - -> TcExpr s -> NF_TcM s TypecheckedHsExpr --} -zonkExpr te ve (HsVar name) - = returnNF_Tc (HsVar (zonkIdOcc ve name)) +zonkExpr :: TcExpr -> NF_TcM TypecheckedHsExpr + +zonkExpr (HsVar id) + = zonkIdOcc id `thenNF_Tc` \ id' -> + returnNF_Tc (HsVar id') + +zonkExpr (HsIPVar id) + = zonkIdOcc id `thenNF_Tc` \ id' -> + returnNF_Tc (HsIPVar id') -zonkExpr te ve (HsLit _) = panic "zonkExpr te ve:HsLit" +zonkExpr (HsLit (HsRat f ty)) + = zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + returnNF_Tc (HsLit (HsRat f new_ty)) -zonkExpr te ve (HsLitOut lit ty) - = zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - returnNF_Tc (HsLitOut lit new_ty) +zonkExpr (HsLit (HsLitLit lit ty)) + = zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + returnNF_Tc (HsLit (HsLitLit lit new_ty)) -zonkExpr te ve (HsLam match) - = zonkMatch te ve match `thenNF_Tc` \ new_match -> +zonkExpr (HsLit lit) + = returnNF_Tc (HsLit lit) + +-- HsOverLit doesn't appear in typechecker output + +zonkExpr (HsLam match) + = zonkMatch match `thenNF_Tc` \ new_match -> returnNF_Tc (HsLam new_match) -zonkExpr te ve (HsApp e1 e2) - = zonkExpr te ve e1 `thenNF_Tc` \ new_e1 -> - zonkExpr te ve e2 `thenNF_Tc` \ new_e2 -> +zonkExpr (HsApp e1 e2) + = zonkExpr e1 `thenNF_Tc` \ new_e1 -> + zonkExpr e2 `thenNF_Tc` \ new_e2 -> returnNF_Tc (HsApp new_e1 new_e2) -zonkExpr te ve (OpApp e1 op fixity e2) - = zonkExpr te ve e1 `thenNF_Tc` \ new_e1 -> - zonkExpr te ve op `thenNF_Tc` \ new_op -> - zonkExpr te ve e2 `thenNF_Tc` \ new_e2 -> +zonkExpr (OpApp e1 op fixity e2) + = zonkExpr e1 `thenNF_Tc` \ new_e1 -> + zonkExpr op `thenNF_Tc` \ new_op -> + zonkExpr e2 `thenNF_Tc` \ new_e2 -> returnNF_Tc (OpApp new_e1 new_op fixity new_e2) -zonkExpr te ve (NegApp _ _) = panic "zonkExpr te ve:NegApp" -zonkExpr te ve (HsPar _) = panic "zonkExpr te ve:HsPar" +zonkExpr (NegApp _ _) = panic "zonkExpr: NegApp" +zonkExpr (HsPar _) = panic "zonkExpr: HsPar" -zonkExpr te ve (SectionL expr op) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - zonkExpr te ve op `thenNF_Tc` \ new_op -> +zonkExpr (SectionL expr op) + = zonkExpr expr `thenNF_Tc` \ new_expr -> + zonkExpr op `thenNF_Tc` \ new_op -> returnNF_Tc (SectionL new_expr new_op) -zonkExpr te ve (SectionR op expr) - = zonkExpr te ve op `thenNF_Tc` \ new_op -> - zonkExpr te ve expr `thenNF_Tc` \ new_expr -> +zonkExpr (SectionR op expr) + = zonkExpr op `thenNF_Tc` \ new_op -> + zonkExpr expr `thenNF_Tc` \ new_expr -> returnNF_Tc (SectionR new_op new_expr) -zonkExpr te ve (HsCase expr ms src_loc) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - mapNF_Tc (zonkMatch te ve) ms `thenNF_Tc` \ new_ms -> +zonkExpr (HsCase expr ms src_loc) + = zonkExpr expr `thenNF_Tc` \ new_expr -> + mapNF_Tc zonkMatch ms `thenNF_Tc` \ new_ms -> returnNF_Tc (HsCase new_expr new_ms src_loc) -zonkExpr te ve (HsIf e1 e2 e3 src_loc) - = zonkExpr te ve e1 `thenNF_Tc` \ new_e1 -> - zonkExpr te ve e2 `thenNF_Tc` \ new_e2 -> - zonkExpr te ve e3 `thenNF_Tc` \ new_e3 -> +zonkExpr (HsIf e1 e2 e3 src_loc) + = zonkExpr e1 `thenNF_Tc` \ new_e1 -> + zonkExpr e2 `thenNF_Tc` \ new_e2 -> + zonkExpr e3 `thenNF_Tc` \ new_e3 -> returnNF_Tc (HsIf new_e1 new_e2 new_e3 src_loc) -zonkExpr te ve (HsLet binds expr) - = zonkBinds te ve binds `thenNF_Tc` \ (new_binds, new_ve) -> - zonkExpr te new_ve expr `thenNF_Tc` \ new_expr -> +zonkExpr (HsLet binds expr) + = zonkBinds binds `thenNF_Tc` \ (new_binds, new_env) -> + tcSetEnv new_env $ + zonkExpr expr `thenNF_Tc` \ new_expr -> returnNF_Tc (HsLet new_binds new_expr) -zonkExpr te ve (HsDo _ _ _) = panic "zonkExpr te ve:HsDo" - -zonkExpr te ve (HsDoOut do_or_lc stmts return_id then_id zero_id ty src_loc) - = zonkStmts te ve stmts `thenNF_Tc` \ (new_stmts, _) -> - zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - returnNF_Tc (HsDoOut do_or_lc new_stmts - (zonkIdOcc ve return_id) - (zonkIdOcc ve then_id) - (zonkIdOcc ve zero_id) +zonkExpr (HsWith expr binds) + = zonkIPBinds binds `thenNF_Tc` \ new_binds -> + tcExtendGlobalValEnv (map fst new_binds) $ + zonkExpr expr `thenNF_Tc` \ new_expr -> + returnNF_Tc (HsWith new_expr new_binds) + where + zonkIPBinds = mapNF_Tc zonkIPBind + zonkIPBind (n, e) = + zonkIdBndr n `thenNF_Tc` \ n' -> + zonkExpr e `thenNF_Tc` \ e' -> + returnNF_Tc (n', e') + +zonkExpr (HsDo _ _ _) = panic "zonkExpr:HsDo" + +zonkExpr (HsDoOut do_or_lc stmts return_id then_id zero_id ty src_loc) + = zonkStmts stmts `thenNF_Tc` \ new_stmts -> + zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + zonkIdOcc return_id `thenNF_Tc` \ new_return_id -> + zonkIdOcc then_id `thenNF_Tc` \ new_then_id -> + zonkIdOcc zero_id `thenNF_Tc` \ new_zero_id -> + returnNF_Tc (HsDoOut do_or_lc new_stmts new_return_id new_then_id new_zero_id new_ty src_loc) -zonkExpr te ve (ExplicitList _) = panic "zonkExpr te ve:ExplicitList" +zonkExpr (ExplicitList _) = panic "zonkExpr:ExplicitList" -zonkExpr te ve (ExplicitListOut ty exprs) - = zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - mapNF_Tc (zonkExpr te ve) exprs `thenNF_Tc` \ new_exprs -> +zonkExpr (ExplicitListOut ty exprs) + = zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + mapNF_Tc zonkExpr exprs `thenNF_Tc` \ new_exprs -> returnNF_Tc (ExplicitListOut new_ty new_exprs) -zonkExpr te ve (ExplicitTuple exprs) - = mapNF_Tc (zonkExpr te ve) exprs `thenNF_Tc` \ new_exprs -> - returnNF_Tc (ExplicitTuple new_exprs) +zonkExpr (ExplicitTuple exprs boxed) + = mapNF_Tc zonkExpr exprs `thenNF_Tc` \ new_exprs -> + returnNF_Tc (ExplicitTuple new_exprs boxed) -zonkExpr te ve (RecordCon con rbinds) - = zonkExpr te ve con `thenNF_Tc` \ new_con -> - zonkRbinds te ve rbinds `thenNF_Tc` \ new_rbinds -> - returnNF_Tc (RecordCon new_con new_rbinds) +zonkExpr (RecordConOut data_con con_expr rbinds) + = zonkExpr con_expr `thenNF_Tc` \ new_con_expr -> + zonkRbinds rbinds `thenNF_Tc` \ new_rbinds -> + returnNF_Tc (RecordConOut data_con new_con_expr new_rbinds) -zonkExpr te ve (RecordUpd _ _) = panic "zonkExpr te ve:RecordUpd" +zonkExpr (RecordUpd _ _) = panic "zonkExpr:RecordUpd" -zonkExpr te ve (RecordUpdOut expr ty dicts rbinds) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - zonkRbinds te ve rbinds `thenNF_Tc` \ new_rbinds -> +zonkExpr (RecordUpdOut expr ty dicts rbinds) + = zonkExpr expr `thenNF_Tc` \ new_expr -> + zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + mapNF_Tc zonkIdOcc dicts `thenNF_Tc` \ new_dicts -> + zonkRbinds rbinds `thenNF_Tc` \ new_rbinds -> returnNF_Tc (RecordUpdOut new_expr new_ty new_dicts new_rbinds) - where - new_dicts = map (zonkIdOcc ve) dicts -zonkExpr te ve (ExprWithTySig _ _) = panic "zonkExpr te ve:ExprWithTySig" -zonkExpr te ve (ArithSeqIn _) = panic "zonkExpr te ve:ArithSeqIn" +zonkExpr (ExprWithTySig _ _) = panic "zonkExpr:ExprWithTySig" +zonkExpr (ArithSeqIn _) = panic "zonkExpr:ArithSeqIn" -zonkExpr te ve (ArithSeqOut expr info) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - zonkArithSeq te ve info `thenNF_Tc` \ new_info -> +zonkExpr (ArithSeqOut expr info) + = zonkExpr expr `thenNF_Tc` \ new_expr -> + zonkArithSeq info `thenNF_Tc` \ new_info -> returnNF_Tc (ArithSeqOut new_expr new_info) -zonkExpr te ve (CCall fun args may_gc is_casm result_ty) - = mapNF_Tc (zonkExpr te ve) args `thenNF_Tc` \ new_args -> - zonkTcTypeToType te result_ty `thenNF_Tc` \ new_result_ty -> - returnNF_Tc (CCall fun new_args may_gc is_casm new_result_ty) +zonkExpr (HsCCall fun args may_gc is_casm result_ty) + = mapNF_Tc zonkExpr args `thenNF_Tc` \ new_args -> + zonkTcTypeToType result_ty `thenNF_Tc` \ new_result_ty -> + returnNF_Tc (HsCCall fun new_args may_gc is_casm new_result_ty) -zonkExpr te ve (HsSCC label expr) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - returnNF_Tc (HsSCC label new_expr) +zonkExpr (HsSCC lbl expr) + = zonkExpr expr `thenNF_Tc` \ new_expr -> + returnNF_Tc (HsSCC lbl new_expr) -zonkExpr te ve (TyLam tyvars expr) +zonkExpr (TyLam tyvars expr) = mapNF_Tc zonkTcTyVarToTyVar tyvars `thenNF_Tc` \ new_tyvars -> - let - new_te = extend_te te new_tyvars - in - zonkExpr new_te ve expr `thenNF_Tc` \ new_expr -> + -- No need to extend tyvar env; see AbsBinds + + zonkExpr expr `thenNF_Tc` \ new_expr -> returnNF_Tc (TyLam new_tyvars new_expr) -zonkExpr te ve (TyApp expr tys) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - mapNF_Tc (zonkTcTypeToType te) tys `thenNF_Tc` \ new_tys -> +zonkExpr (TyApp expr tys) + = zonkExpr expr `thenNF_Tc` \ new_expr -> + mapNF_Tc zonkTcTypeToType tys `thenNF_Tc` \ new_tys -> returnNF_Tc (TyApp new_expr new_tys) -zonkExpr te ve (DictLam dicts expr) - = mapNF_Tc (zonkIdBndr te) dicts `thenNF_Tc` \ new_dicts -> - let - new_ve = extend_ve ve new_dicts - in - zonkExpr te new_ve expr `thenNF_Tc` \ new_expr -> +zonkExpr (DictLam dicts expr) + = mapNF_Tc zonkIdBndr dicts `thenNF_Tc` \ new_dicts -> + tcExtendGlobalValEnv new_dicts $ + zonkExpr expr `thenNF_Tc` \ new_expr -> returnNF_Tc (DictLam new_dicts new_expr) -zonkExpr te ve (DictApp expr dicts) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> +zonkExpr (DictApp expr dicts) + = zonkExpr expr `thenNF_Tc` \ new_expr -> + mapNF_Tc zonkIdOcc dicts `thenNF_Tc` \ new_dicts -> returnNF_Tc (DictApp new_expr new_dicts) - where - new_dicts = map (zonkIdOcc ve) dicts -zonkExpr te ve (ClassDictLam dicts methods expr) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - returnNF_Tc (ClassDictLam new_dicts new_methods new_expr) - where - new_dicts = map (zonkIdOcc ve) dicts - new_methods = map (zonkIdOcc ve) methods - - -zonkExpr te ve (Dictionary dicts methods) - = returnNF_Tc (Dictionary new_dicts new_methods) - where - new_dicts = map (zonkIdOcc ve) dicts - new_methods = map (zonkIdOcc ve) methods - -zonkExpr te ve (SingleDict name) - = returnNF_Tc (SingleDict (zonkIdOcc ve name)) ------------------------------------------------------------------------- -zonkArithSeq :: TyVarEnv Type -> IdEnv Id - -> TcArithSeqInfo s -> NF_TcM s TypecheckedArithSeqInfo +zonkArithSeq :: TcArithSeqInfo -> NF_TcM TypecheckedArithSeqInfo -zonkArithSeq te ve (From e) - = zonkExpr te ve e `thenNF_Tc` \ new_e -> +zonkArithSeq (From e) + = zonkExpr e `thenNF_Tc` \ new_e -> returnNF_Tc (From new_e) -zonkArithSeq te ve (FromThen e1 e2) - = zonkExpr te ve e1 `thenNF_Tc` \ new_e1 -> - zonkExpr te ve e2 `thenNF_Tc` \ new_e2 -> +zonkArithSeq (FromThen e1 e2) + = zonkExpr e1 `thenNF_Tc` \ new_e1 -> + zonkExpr e2 `thenNF_Tc` \ new_e2 -> returnNF_Tc (FromThen new_e1 new_e2) -zonkArithSeq te ve (FromTo e1 e2) - = zonkExpr te ve e1 `thenNF_Tc` \ new_e1 -> - zonkExpr te ve e2 `thenNF_Tc` \ new_e2 -> +zonkArithSeq (FromTo e1 e2) + = zonkExpr e1 `thenNF_Tc` \ new_e1 -> + zonkExpr e2 `thenNF_Tc` \ new_e2 -> returnNF_Tc (FromTo new_e1 new_e2) -zonkArithSeq te ve (FromThenTo e1 e2 e3) - = zonkExpr te ve e1 `thenNF_Tc` \ new_e1 -> - zonkExpr te ve e2 `thenNF_Tc` \ new_e2 -> - zonkExpr te ve e3 `thenNF_Tc` \ new_e3 -> +zonkArithSeq (FromThenTo e1 e2 e3) + = zonkExpr e1 `thenNF_Tc` \ new_e1 -> + zonkExpr e2 `thenNF_Tc` \ new_e2 -> + zonkExpr e3 `thenNF_Tc` \ new_e3 -> returnNF_Tc (FromThenTo new_e1 new_e2 new_e3) ------------------------------------------------------------------------- -zonkStmts :: TyVarEnv Type -> IdEnv Id - -> [TcStmt s] -> NF_TcM s ([TypecheckedStmt], IdEnv Id) +zonkStmts :: [TcStmt] + -> NF_TcM [TypecheckedStmt] -zonkStmts te ve [] = returnNF_Tc ([], ve) +zonkStmts [] = returnNF_Tc [] -zonkStmts te ve [ReturnStmt expr] - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - returnNF_Tc ([ReturnStmt new_expr], ve) +zonkStmts (ParStmtOut bndrstmtss : stmts) + = mapNF_Tc (mapNF_Tc zonkId) bndrss `thenNF_Tc` \ new_bndrss -> + let new_binders = concat new_bndrss in + mapNF_Tc zonkStmts stmtss `thenNF_Tc` \ new_stmtss -> + tcExtendGlobalValEnv new_binders $ + zonkStmts stmts `thenNF_Tc` \ new_stmts -> + returnNF_Tc (ParStmtOut (zip new_bndrss new_stmtss) : new_stmts) + where (bndrss, stmtss) = unzip bndrstmtss -zonkStmts te ve (ExprStmt expr locn : stmts) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - zonkStmts te ve stmts `thenNF_Tc` \ (new_stmts, new_ve) -> - returnNF_Tc (ExprStmt new_expr locn : new_stmts, new_ve) +zonkStmts [ReturnStmt expr] + = zonkExpr expr `thenNF_Tc` \ new_expr -> + returnNF_Tc [ReturnStmt new_expr] -zonkStmts te ve (GuardStmt expr locn : stmts) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - zonkStmts te ve stmts `thenNF_Tc` \ (new_stmts, new_ve) -> - returnNF_Tc (GuardStmt new_expr locn : new_stmts, new_ve) +zonkStmts (ExprStmt expr locn : stmts) + = zonkExpr expr `thenNF_Tc` \ new_expr -> + zonkStmts stmts `thenNF_Tc` \ new_stmts -> + returnNF_Tc (ExprStmt new_expr locn : new_stmts) -zonkStmts te ve (LetStmt binds : stmts) - = zonkBinds te ve binds `thenNF_Tc` \ (new_binds, new_ve) -> - zonkStmts te new_ve stmts `thenNF_Tc` \ (new_stmts, new_ve2) -> - returnNF_Tc (LetStmt new_binds : new_stmts, new_ve2) +zonkStmts (GuardStmt expr locn : stmts) + = zonkExpr expr `thenNF_Tc` \ new_expr -> + zonkStmts stmts `thenNF_Tc` \ new_stmts -> + returnNF_Tc (GuardStmt new_expr locn : new_stmts) -zonkStmts te ve (BindStmt pat expr locn : stmts) - = zonkPat te ve pat `thenNF_Tc` \ (new_pat, ids) -> - zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - let - new_ve = extend_ve ve ids - in - zonkStmts te new_ve stmts `thenNF_Tc` \ (new_stmts, new_ve2) -> - returnNF_Tc (BindStmt new_pat new_expr locn : new_stmts, new_ve2) +zonkStmts (LetStmt binds : stmts) + = zonkBinds binds `thenNF_Tc` \ (new_binds, new_env) -> + tcSetEnv new_env $ + zonkStmts stmts `thenNF_Tc` \ new_stmts -> + returnNF_Tc (LetStmt new_binds : new_stmts) + +zonkStmts (BindStmt pat expr locn : stmts) + = zonkExpr expr `thenNF_Tc` \ new_expr -> + zonkPat pat `thenNF_Tc` \ (new_pat, new_ids) -> + tcExtendGlobalValEnv (bagToList new_ids) $ + zonkStmts stmts `thenNF_Tc` \ new_stmts -> + returnNF_Tc (BindStmt new_pat new_expr locn : new_stmts) ------------------------------------------------------------------------- -zonkRbinds :: TyVarEnv Type -> IdEnv Id - -> TcRecordBinds s -> NF_TcM s TypecheckedRecordBinds +zonkRbinds :: TcRecordBinds -> NF_TcM TypecheckedRecordBinds -zonkRbinds te ve rbinds +zonkRbinds rbinds = mapNF_Tc zonk_rbind rbinds where zonk_rbind (field, expr, pun) - = zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - returnNF_Tc (zonkIdOcc ve field, new_expr, pun) + = zonkExpr expr `thenNF_Tc` \ new_expr -> + zonkIdOcc field `thenNF_Tc` \ new_field -> + returnNF_Tc (new_field, new_expr, pun) \end{code} %************************************************************************ @@ -566,85 +565,119 @@ zonkRbinds te ve rbinds %************************************************************************ \begin{code} -{- -zonkPat :: TyVarEnv Type -> IdEnv Id - -> TcPat s -> NF_TcM s (TypecheckedPat, [Id]) --} -zonkPat te ve (WildPat ty) - = zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - returnNF_Tc (WildPat new_ty, []) - -zonkPat te ve (VarPat v) - = zonkIdBndr te v `thenNF_Tc` \ new_v -> - returnNF_Tc (VarPat new_v, [new_v]) - -zonkPat te ve (LazyPat pat) - = zonkPat te ve pat `thenNF_Tc` \ (new_pat, ids) -> +zonkPat :: TcPat -> NF_TcM (TypecheckedPat, Bag Id) + +zonkPat (WildPat ty) + = zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + returnNF_Tc (WildPat new_ty, emptyBag) + +zonkPat (VarPat v) + = zonkIdBndr v `thenNF_Tc` \ new_v -> + returnNF_Tc (VarPat new_v, unitBag new_v) + +zonkPat (LazyPat pat) + = zonkPat pat `thenNF_Tc` \ (new_pat, ids) -> returnNF_Tc (LazyPat new_pat, ids) -zonkPat te ve (AsPat n pat) - = zonkIdBndr te n `thenNF_Tc` \ new_n -> - zonkPat te ve pat `thenNF_Tc` \ (new_pat, ids) -> - returnNF_Tc (AsPat new_n new_pat, new_n:ids) - -zonkPat te ve (ConPat n ty pats) - = zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - zonkPats te ve pats `thenNF_Tc` \ (new_pats, ids) -> - returnNF_Tc (ConPat n new_ty new_pats, ids) - -zonkPat te ve (ConOpPat pat1 op pat2 ty) - = zonkPat te ve pat1 `thenNF_Tc` \ (new_pat1, ids1) -> - zonkPat te ve pat2 `thenNF_Tc` \ (new_pat2, ids2) -> - zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - returnNF_Tc (ConOpPat new_pat1 op new_pat2 new_ty, ids1 ++ ids2) - -zonkPat te ve (ListPat ty pats) - = zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - zonkPats te ve pats `thenNF_Tc` \ (new_pats, ids) -> - returnNF_Tc (ListPat new_ty new_pats, ids) +zonkPat (AsPat n pat) + = zonkIdBndr n `thenNF_Tc` \ new_n -> + zonkPat pat `thenNF_Tc` \ (new_pat, ids) -> + returnNF_Tc (AsPat new_n new_pat, new_n `consBag` ids) -zonkPat te ve (TuplePat pats) - = zonkPats te ve pats `thenNF_Tc` \ (new_pats, ids) -> - returnNF_Tc (TuplePat new_pats, ids) +zonkPat (ListPat ty pats) + = zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + zonkPats pats `thenNF_Tc` \ (new_pats, ids) -> + returnNF_Tc (ListPat new_ty new_pats, ids) -zonkPat te ve (RecPat n ty rpats) - = zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> +zonkPat (TuplePat pats boxed) + = zonkPats pats `thenNF_Tc` \ (new_pats, ids) -> + returnNF_Tc (TuplePat new_pats boxed, ids) + +zonkPat (ConPat n ty tvs dicts pats) + = zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + mapNF_Tc zonkTcTyVarToTyVar tvs `thenNF_Tc` \ new_tvs -> + mapNF_Tc zonkIdBndr dicts `thenNF_Tc` \ new_dicts -> + tcExtendGlobalValEnv new_dicts $ + zonkPats pats `thenNF_Tc` \ (new_pats, ids) -> + returnNF_Tc (ConPat n new_ty new_tvs new_dicts new_pats, + listToBag new_dicts `unionBags` ids) + +zonkPat (RecPat n ty tvs dicts rpats) + = zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + mapNF_Tc zonkTcTyVarToTyVar tvs `thenNF_Tc` \ new_tvs -> + mapNF_Tc zonkIdBndr dicts `thenNF_Tc` \ new_dicts -> + tcExtendGlobalValEnv new_dicts $ mapAndUnzipNF_Tc zonk_rpat rpats `thenNF_Tc` \ (new_rpats, ids_s) -> - returnNF_Tc (RecPat n new_ty new_rpats, concat ids_s) + returnNF_Tc (RecPat n new_ty new_tvs new_dicts new_rpats, + listToBag new_dicts `unionBags` unionManyBags ids_s) where zonk_rpat (f, pat, pun) - = zonkPat te ve pat `thenNF_Tc` \ (new_pat, ids) -> + = zonkPat pat `thenNF_Tc` \ (new_pat, ids) -> returnNF_Tc ((f, new_pat, pun), ids) -zonkPat te ve (LitPat lit ty) - = zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - returnNF_Tc (LitPat lit new_ty, []) +zonkPat (LitPat lit ty) + = zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + returnNF_Tc (LitPat lit new_ty, emptyBag) -zonkPat te ve (NPat lit ty expr) - = zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - zonkExpr te ve expr `thenNF_Tc` \ new_expr -> - returnNF_Tc (NPat lit new_ty new_expr, []) +zonkPat (NPat lit ty expr) + = zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + zonkExpr expr `thenNF_Tc` \ new_expr -> + returnNF_Tc (NPat lit new_ty new_expr, emptyBag) -zonkPat te ve (NPlusKPat n k ty e1 e2) - = zonkIdBndr te n `thenNF_Tc` \ new_n -> - zonkTcTypeToType te ty `thenNF_Tc` \ new_ty -> - zonkExpr te ve e1 `thenNF_Tc` \ new_e1 -> - zonkExpr te ve e2 `thenNF_Tc` \ new_e2 -> - returnNF_Tc (NPlusKPat new_n k new_ty new_e1 new_e2, [new_n]) +zonkPat (NPlusKPat n k ty e1 e2) + = zonkIdBndr n `thenNF_Tc` \ new_n -> + zonkTcTypeToType ty `thenNF_Tc` \ new_ty -> + zonkExpr e1 `thenNF_Tc` \ new_e1 -> + zonkExpr e2 `thenNF_Tc` \ new_e2 -> + returnNF_Tc (NPlusKPat new_n k new_ty new_e1 new_e2, unitBag new_n) -zonkPat te ve (DictPat ds ms) - = mapNF_Tc (zonkIdBndr te) ds `thenNF_Tc` \ new_ds -> - mapNF_Tc (zonkIdBndr te) ms `thenNF_Tc` \ new_ms -> - returnNF_Tc (DictPat new_ds new_ms, new_ds ++ new_ms) +zonkPat (DictPat ds ms) + = mapNF_Tc zonkIdBndr ds `thenNF_Tc` \ new_ds -> + mapNF_Tc zonkIdBndr ms `thenNF_Tc` \ new_ms -> + returnNF_Tc (DictPat new_ds new_ms, + listToBag new_ds `unionBags` listToBag new_ms) -zonkPats te ve [] - = returnNF_Tc ([], []) -zonkPats te ve (pat:pats) - = zonkPat te ve pat `thenNF_Tc` \ (pat', ids1) -> - zonkPats te ve pats `thenNF_Tc` \ (pats', ids2) -> - returnNF_Tc (pat':pats', ids1 ++ ids2) +zonkPats [] + = returnNF_Tc ([], emptyBag) +zonkPats (pat:pats) + = zonkPat pat `thenNF_Tc` \ (pat', ids1) -> + zonkPats pats `thenNF_Tc` \ (pats', ids2) -> + returnNF_Tc (pat':pats', ids1 `unionBags` ids2) \end{code} +%************************************************************************ +%* * +\subsection[BackSubst-Foreign]{Foreign exports} +%* * +%************************************************************************ + +\begin{code} +zonkForeignExports :: [TcForeignExportDecl] -> NF_TcM [TypecheckedForeignDecl] +zonkForeignExports ls = mapNF_Tc zonkForeignExport ls + +zonkForeignExport :: TcForeignExportDecl -> NF_TcM (TypecheckedForeignDecl) +zonkForeignExport (ForeignDecl i imp_exp hs_ty ext_nm cconv src_loc) = + zonkIdOcc i `thenNF_Tc` \ i' -> + returnNF_Tc (ForeignDecl i' imp_exp undefined ext_nm cconv src_loc) +\end{code} + +\begin{code} +zonkRules :: [TcRuleDecl] -> NF_TcM [TypecheckedRuleDecl] +zonkRules rs = mapNF_Tc zonkRule rs + +zonkRule (HsRule name tyvars vars lhs rhs loc) + = mapNF_Tc zonkTcTyVarToTyVar tyvars `thenNF_Tc` \ new_tyvars -> + mapNF_Tc zonkIdBndr [v | RuleBndr v <- vars] `thenNF_Tc` \ new_bndrs -> + tcExtendGlobalValEnv new_bndrs $ + zonkExpr lhs `thenNF_Tc` \ new_lhs -> + zonkExpr rhs `thenNF_Tc` \ new_rhs -> + returnNF_Tc (HsRule name new_tyvars (map RuleBndr new_bndrs) new_lhs new_rhs loc) + -- I hate this map RuleBndr stuff + +zonkRule (IfaceRuleOut fun rule) + = zonkIdOcc fun `thenNF_Tc` \ fun' -> + returnNF_Tc (IfaceRuleOut fun' rule) +\end{code}