X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2FhsSyn%2FHsBinds.lhs;h=5871914ad864a4ec6152b8e8b8f89a35f0fecb1c;hp=c4d38fd7a302ebd2c9329799019d54b8fbe24978;hb=e5c3b478b3cd1707cf122833822f44b2ac09b8e9;hpb=f278f0676579f67075033a4f9857715909c4b71e diff --git a/compiler/hsSyn/HsBinds.lhs b/compiler/hsSyn/HsBinds.lhs index c4d38fd..5871914 100644 --- a/compiler/hsSyn/HsBinds.lhs +++ b/compiler/hsSyn/HsBinds.lhs @@ -32,10 +32,13 @@ import BasicTypes import Outputable import SrcLoc import Util +import VarEnv import Var import Bag +import Unique import FastString +import Data.IORef( IORef ) import Data.Data hiding ( Fixity ) \end{code} @@ -66,24 +69,23 @@ data HsLocalBindsLR idL idR -- Bindings in a 'let' expression type HsValBinds id = HsValBindsLR id id data HsValBindsLR idL idR -- Value bindings (not implicit parameters) - = ValBindsIn -- Before typechecking + = ValBindsIn -- Before renaming RHS; idR is always RdrName (LHsBindsLR idL idR) [LSig idR] -- Not dependency analysed -- Recursive by default - | ValBindsOut -- After renaming + | ValBindsOut -- After renaming RHS; idR can be Name or Id [(RecFlag, LHsBinds idL)] -- Dependency analysed, later bindings -- in the list may depend on earlier -- ones. [LSig Name] deriving (Data, Typeable) -type LHsBinds id = Bag (LHsBind id) -type DictBinds id = LHsBinds id -- Used for dictionary or method bindings -type LHsBind id = Located (HsBind id) -type HsBind id = HsBindLR id id +type LHsBind id = LHsBindLR id id +type LHsBinds id = LHsBindsLR id id +type HsBind id = HsBindLR id id -type LHsBindLR idL idR = Located (HsBindLR idL idR) type LHsBindsLR idL idR = Bag (LHsBindLR idL idR) +type LHsBindLR idL idR = Located (HsBindLR idL idR) data HsBindLR idL idR = -- | FunBind is used for both functions @f x = e@ @@ -123,7 +125,7 @@ data HsBindLR idL idR -- Before renaming, and after typechecking, -- the field is unused; it's just an error thunk - fun_tick :: Maybe (Int,[idR]) -- ^ This is the (optional) module-local tick number. + fun_tick :: Maybe (Int,[Id]) -- ^ This is the (optional) module-local tick number. } | PatBind { -- The pattern is never a simple variable; @@ -141,18 +143,19 @@ data HsBindLR idL idR -- (used for implication constraints only) } - | AbsBinds { -- Binds abstraction; TRANSLATION + | AbsBinds { -- Binds abstraction; TRANSLATION abs_tvs :: [TyVar], - abs_dicts :: [DictId], -- Includes equality constraints + abs_ev_vars :: [EvVar], -- Includes equality constraints -- AbsBinds only gets used when idL = idR after renaming, -- but these need to be idL's for the collect... code in HsUtil to have -- the right type abs_exports :: [([TyVar], idL, idL, TcSpecPrags)], -- (tvs, poly_id, mono_id, prags) - abs_binds :: LHsBinds idL -- The dictionary bindings and typechecked user bindings - -- mixed up together; you can tell the dict bindings because - -- they are all VarBinds + + abs_ev_binds :: TcEvBinds, -- Evidence bindings + abs_binds :: LHsBinds idL -- Typechecked user bindings } + deriving (Data, Typeable) -- Consider (AbsBinds tvs ds [(ftvs, poly_f, mono_f) binds] -- @@ -243,6 +246,13 @@ plusHsValBinds (ValBindsIn ds1 sigs1) (ValBindsIn ds2 sigs2) = ValBindsIn (ds1 `unionBags` ds2) (sigs1 ++ sigs2) plusHsValBinds (ValBindsOut ds1 sigs1) (ValBindsOut ds2 sigs2) = ValBindsOut (ds1 ++ ds2) (sigs1 ++ sigs2) + +getTypeSigNames :: HsValBinds a -> NameSet +-- Get the names that have a user type sig +getTypeSigNames (ValBindsIn {}) + = panic "getTypeSigNames" +getTypeSigNames (ValBindsOut _ sigs) + = mkNameSet [unLoc n | L _ (TypeSig n _) <- sigs] \end{code} What AbsBinds means @@ -275,18 +285,24 @@ instance (OutputableBndr idL, OutputableBndr idR) => Outputable (HsBindLR idL id ppr_monobind :: (OutputableBndr idL, OutputableBndr idR) => HsBindLR idL idR -> SDoc -ppr_monobind (PatBind { pat_lhs = pat, pat_rhs = grhss }) = pprPatBind pat grhss -ppr_monobind (VarBind { var_id = var, var_rhs = rhs }) = pprBndr CaseBind var <+> equals <+> pprExpr (unLoc rhs) +ppr_monobind (PatBind { pat_lhs = pat, pat_rhs = grhss }) + = pprPatBind pat grhss +ppr_monobind (VarBind { var_id = var, var_rhs = rhs }) + = sep [pprBndr CaseBind var, nest 2 $ equals <+> pprExpr (unLoc rhs)] ppr_monobind (FunBind { fun_id = fun, fun_infix = inf, + fun_co_fn = wrap, fun_matches = matches, fun_tick = tick }) = pprTicks empty (case tick of Nothing -> empty Just t -> text "-- tick id = " <> ppr t) + $$ ifPprDebug (pprBndr LetBind (unLoc fun)) $$ pprFunBind (unLoc fun) inf matches + $$ ifPprDebug (ppr wrap) -ppr_monobind (AbsBinds { abs_tvs = tyvars, abs_dicts = dictvars, - abs_exports = exports, abs_binds = val_binds }) +ppr_monobind (AbsBinds { abs_tvs = tyvars, abs_ev_vars = dictvars + , abs_exports = exports, abs_binds = val_binds + , abs_ev_binds = ev_binds }) = sep [ptext (sLit "AbsBinds"), brackets (interpp'SP tyvars), brackets (interpp'SP dictvars), @@ -295,10 +311,12 @@ ppr_monobind (AbsBinds { abs_tvs = tyvars, abs_dicts = dictvars, nest 2 ( vcat [pprBndr LetBind x | (_,x,_,_) <- exports] -- Print type signatures $$ pprLHsBinds val_binds ) + $$ + ifPprDebug (ppr ev_binds) where ppr_exp (tvs, gbl, lcl, prags) = vcat [ppr gbl <+> ptext (sLit "<=") <+> ppr tvs <+> ppr lcl, - nest 2 (pprTcSpecPrags gbl prags)] + nest 2 (pprTcSpecPrags prags)] \end{code} @@ -321,12 +339,12 @@ pprTicks pp_no_debug pp_when_debug data HsIPBinds id = IPBinds [LIPBind id] - (DictBinds id) -- Only in typechecker output; binds + TcEvBinds -- Only in typechecker output; binds -- uses of the implicit parameters deriving (Data, Typeable) isEmptyIPBinds :: HsIPBinds id -> Bool -isEmptyIPBinds (IPBinds is ds) = null is && isEmptyBag ds +isEmptyIPBinds (IPBinds is ds) = null is && isEmptyTcEvBinds ds type LIPBind id = Located (IPBind id) @@ -339,7 +357,7 @@ data IPBind id instance (OutputableBndr id) => Outputable (HsIPBinds id) where ppr (IPBinds bs ds) = pprDeeperList vcat (map ppr bs) - $$ pprLHsBinds ds + $$ ifPprDebug (ppr ds) instance (OutputableBndr id) => Outputable (IPBind id) where ppr (IPBind id rhs) = pprBndr LetBind id <+> equals <+> pprExpr (unLoc rhs) @@ -359,65 +377,148 @@ instance (OutputableBndr id) => Outputable (IPBind id) where data HsWrapper = WpHole -- The identity coercion - | WpCompose HsWrapper HsWrapper -- (\a1..an. []) `WpCompose` (\x1..xn. []) - -- = (\a1..an \x1..xn. []) + | WpCompose HsWrapper HsWrapper + -- (wrap1 `WpCompse` wrap2)[e] = wrap1[ wrap2[ e ]] + -- + -- Hence (\a. []) `WpCompose` (\b. []) = (\a b. []) + -- But ([] a) `WpCompose` ([] b) = ([] b a) | WpCast Coercion -- A cast: [] `cast` co -- Guaranteed not the identity coercion - | WpApp Var -- [] d the 'd' is a type-class dictionary or coercion variable - - | WpTyApp Type -- [] t the 't' is a type or corecion - -- ToDo: it'd be tidier if 't' was always a type (not coercion), - -- but that is inconvenient in Inst.instCallDicts + -- Evidence abstraction and application + -- (both dictionaries and coercions) + | WpEvLam EvVar -- \d. [] the 'd' is an evidence variable + | WpEvApp EvTerm -- [] d the 'd' is evidence for a constraint - | WpLam Var -- \d. [] the 'd' is a type-class dictionary or coercion variable + -- Type abstraction and application | WpTyLam TyVar -- \a. [] the 'a' is a type variable (not coercion var) + | WpTyApp Type -- [] t the 't' is a type (not coercion) + - -- Non-empty bindings, so that the identity coercion - -- is always exactly WpHole - | WpLet (LHsBinds Id) -- let binds in [] - -- (would be nicer to be core bindings) + | WpLet TcEvBinds -- Non-empty (or possibly non-empty) evidence bindings, + -- so that the identity coercion is always exactly WpHole deriving (Data, Typeable) -instance Outputable HsWrapper where - ppr co_fn = pprHsWrapper (ptext (sLit "<>")) co_fn -pprHsWrapper :: SDoc -> HsWrapper -> SDoc -pprHsWrapper it wrap = - let - help it WpHole = it - help it (WpCompose f1 f2) = help (help it f2) f1 - help it (WpCast co) = sep [it, nest 2 (ptext (sLit "`cast`") <+> pprParendType co)] - help it (WpApp id) = sep [it, nest 2 (ppr id)] - help it (WpTyApp ty) = sep [it, ptext (sLit "@") <+> pprParendType ty] - help it (WpLam id) = sep [ptext (sLit "\\") <> pprBndr LambdaBind id <> dot, it] - help it (WpTyLam tv) = sep [ptext (sLit "/\\") <> pprBndr LambdaBind tv <> dot, it] - help it (WpLet binds) = sep [ptext (sLit "let") <+> braces (ppr binds), it] - in - -- in debug mode, print the wrapper - -- otherwise just print what's inside - getPprStyle (\ s -> if debugStyle s then (help it wrap) else it) +data TcEvBinds + = TcEvBinds -- Mutable evidence bindings + EvBindsVar -- Mutable because they are updated "later" + -- when an implication constraint is solved + + | EvBinds -- Immutable after zonking + (Bag EvBind) + + deriving( Typeable ) + +data EvBindsVar = EvBindsVar (IORef EvBindMap) Unique + -- The Unique is only for debug printing + +----------------- +type EvBindMap = VarEnv EvBind + +emptyEvBindMap :: EvBindMap +emptyEvBindMap = emptyVarEnv + +extendEvBinds :: EvBindMap -> EvVar -> EvTerm -> EvBindMap +extendEvBinds bs v t = extendVarEnv bs v (EvBind v t) + +lookupEvBind :: EvBindMap -> EvVar -> Maybe EvBind +lookupEvBind = lookupVarEnv + +evBindMapBinds :: EvBindMap -> Bag EvBind +evBindMapBinds = foldVarEnv consBag emptyBag + +----------------- +instance Data TcEvBinds where + -- Placeholder; we can't travers into TcEvBinds + toConstr _ = abstractConstr "TcEvBinds" + gunfold _ _ = error "gunfold" + dataTypeOf _ = mkNoRepType "TcEvBinds" + +-- All evidence is bound by EvBinds; no side effects +data EvBind = EvBind EvVar EvTerm + +data EvTerm + = EvId EvId -- Term-level variable-to-variable bindings + -- (no coercion variables! they come via EvCoercion) + + | EvCoercion Coercion -- Coercion bindings + + | EvCast EvVar Coercion -- d |> co + + | EvDFunApp DFunId -- Dictionary instance application + [Type] [EvVar] + + | EvSuperClass DictId Int -- n'th superclass. Used for both equalities and + -- dictionaries, even though the former have no + -- selector Id. We count up from _0_ + + deriving( Data, Typeable) +evVarTerm :: EvVar -> EvTerm +evVarTerm v | isCoVar v = EvCoercion (mkCoVarCo v) + | otherwise = EvId v +\end{code} + +Note [EvBinds/EvTerm] +~~~~~~~~~~~~~~~~~~~~~ +How evidence is created and updated. Bindings for dictionaries, +and coercions and implicit parameters are carried around in TcEvBinds +which during constraint generation and simplification is always of the +form (TcEvBinds ref). After constraint simplification is finished it +will be transformed to t an (EvBinds ev_bag). + +Evidence for coercions *SHOULD* be filled in using the TcEvBinds +However, all EvVars that correspond to *wanted* coercion terms in +an EvBind must be mutable variables so that they can be readily +inlined (by zonking) after constraint simplification is finished. + +Conclusion: a new wanted coercion variable should be made mutable. +[Notice though that evidence variables that bind coercion terms + from super classes will be "given" and hence rigid] + + +\begin{code} +emptyTcEvBinds :: TcEvBinds +emptyTcEvBinds = EvBinds emptyBag + +isEmptyTcEvBinds :: TcEvBinds -> Bool +isEmptyTcEvBinds (EvBinds b) = isEmptyBag b +isEmptyTcEvBinds (TcEvBinds {}) = panic "isEmptyTcEvBinds" + (<.>) :: HsWrapper -> HsWrapper -> HsWrapper WpHole <.> c = c c <.> WpHole = c c1 <.> c2 = c1 `WpCompose` c2 mkWpTyApps :: [Type] -> HsWrapper -mkWpTyApps tys = mk_co_fn WpTyApp (reverse tys) +mkWpTyApps tys = mk_co_app_fn WpTyApp tys + +mkWpEvApps :: [EvTerm] -> HsWrapper +mkWpEvApps args = mk_co_app_fn WpEvApp args -mkWpApps :: [Var] -> HsWrapper -mkWpApps ids = mk_co_fn WpApp (reverse ids) +mkWpEvVarApps :: [EvVar] -> HsWrapper +mkWpEvVarApps vs = mkWpEvApps (map evVarTerm vs) mkWpTyLams :: [TyVar] -> HsWrapper -mkWpTyLams ids = mk_co_fn WpTyLam ids +mkWpTyLams ids = mk_co_lam_fn WpTyLam ids mkWpLams :: [Var] -> HsWrapper -mkWpLams ids = mk_co_fn WpLam ids +mkWpLams ids = mk_co_lam_fn WpEvLam ids -mk_co_fn :: (a -> HsWrapper) -> [a] -> HsWrapper -mk_co_fn f as = foldr (WpCompose . f) WpHole as +mkWpLet :: TcEvBinds -> HsWrapper +-- This no-op is a quite a common case +mkWpLet (EvBinds b) | isEmptyBag b = WpHole +mkWpLet ev_binds = WpLet ev_binds + +mk_co_lam_fn :: (a -> HsWrapper) -> [a] -> HsWrapper +mk_co_lam_fn f as = foldr (\x wrap -> f x `WpCompose` wrap) WpHole as + +mk_co_app_fn :: (a -> HsWrapper) -> [a] -> HsWrapper +-- For applications, the *first* argument must +-- come *last* in the composition sequence +mk_co_app_fn f as = foldr (\x wrap -> wrap `WpCompose` f x) WpHole as idHsWrapper :: HsWrapper idHsWrapper = WpHole @@ -427,6 +528,55 @@ isIdHsWrapper WpHole = True isIdHsWrapper _ = False \end{code} +Pretty printing + +\begin{code} +instance Outputable HsWrapper where + ppr co_fn = pprHsWrapper (ptext (sLit "<>")) co_fn + +pprHsWrapper :: SDoc -> HsWrapper -> SDoc +-- In debug mode, print the wrapper +-- otherwise just print what's inside +pprHsWrapper doc wrap + = getPprStyle (\ s -> if debugStyle s then (help (add_parens doc) wrap False) else doc) + where + help :: (Bool -> SDoc) -> HsWrapper -> Bool -> SDoc + -- True <=> appears in function application position + -- False <=> appears as body of let or lambda + help it WpHole = it + help it (WpCompose f1 f2) = help (help it f2) f1 + help it (WpCast co) = add_parens $ sep [it False, nest 2 (ptext (sLit "|>") + <+> pprParendCo co)] + help it (WpEvApp id) = no_parens $ sep [it True, nest 2 (ppr id)] + help it (WpTyApp ty) = no_parens $ sep [it True, ptext (sLit "@") <+> pprParendType ty] + help it (WpEvLam id) = add_parens $ sep [ ptext (sLit "\\") <> pp_bndr id, it False] + help it (WpTyLam tv) = add_parens $ sep [ptext (sLit "/\\") <> pp_bndr tv, it False] + help it (WpLet binds) = add_parens $ sep [ptext (sLit "let") <+> braces (ppr binds), it False] + + pp_bndr v = pprBndr LambdaBind v <> dot + + add_parens, no_parens :: SDoc -> Bool -> SDoc + add_parens d True = parens d + add_parens d False = d + no_parens d _ = d + +instance Outputable TcEvBinds where + ppr (TcEvBinds v) = ppr v + ppr (EvBinds bs) = ptext (sLit "EvBinds") <> braces (ppr bs) + +instance Outputable EvBindsVar where + ppr (EvBindsVar _ u) = ptext (sLit "EvBindsVar") <> angleBrackets (ppr u) + +instance Outputable EvBind where + ppr (EvBind v e) = ppr v <+> equals <+> ppr e + +instance Outputable EvTerm where + ppr (EvId v) = ppr v + ppr (EvCast v co) = ppr v <+> (ptext (sLit "`cast`")) <+> pprParendCo co + ppr (EvCoercion co) = ptext (sLit "CO") <+> ppr co + ppr (EvSuperClass d n) = ptext (sLit "sc") <> parens (ppr (d,n)) + ppr (EvDFunApp df tys ts) = ppr df <+> sep [ char '@' <> ppr tys, ppr ts ] +\end{code} %************************************************************************ %* * @@ -447,6 +597,10 @@ data Sig name -- Signatures and pragmas -- f :: Num a => a -> a TypeSig (Located name) (LHsType name) + -- A type signature for a default method inside a class + -- default eq :: (Representable0 a, GEq (Rep0 a)) => a -> a -> Bool + | GenericSig (Located name) (LHsType name) + -- A type signature in generated code, notably the code -- generated for record selectors. We simply record -- the desired Id itself, replete with its name, type @@ -471,10 +625,10 @@ data Sig name -- Signatures and pragmas -- If it's just defaultInlinePragma, then we said -- SPECIALISE, not SPECIALISE_INLINE - -- A specialisation pragma for instance declarations only - -- {-# SPECIALISE instance Eq [Int] #-} - | SpecInstSig (LHsType name) -- (Class tys); should be a specialisation of the - -- current instance decl + -- A specialisation pragma for instance declarations only + -- {-# SPECIALISE instance Eq [Int] #-} + | SpecInstSig (LHsType name) -- (Class tys); should be a specialisation of the + -- current instance decl deriving (Data, Typeable) @@ -486,11 +640,14 @@ data FixitySig name = FixitySig (Located name) Fixity data TcSpecPrags = IsDefaultMethod -- Super-specialised: a default method should -- be macro-expanded at every call site - | SpecPrags [Located TcSpecPrag] + | SpecPrags [LTcSpecPrag] deriving (Data, Typeable) +type LTcSpecPrag = Located TcSpecPrag + data TcSpecPrag = SpecPrag + Id -- The Id to be specialised HsWrapper -- An wrapper, that specialises the polymorphic function InlinePragma -- Inlining spec for the specialised function deriving (Data, Typeable) @@ -513,29 +670,27 @@ okBindSig :: Sig a -> Bool okBindSig _ = True okHsBootSig :: Sig a -> Bool -okHsBootSig (TypeSig _ _) = True -okHsBootSig (FixSig _) = True -okHsBootSig _ = False +okHsBootSig (TypeSig _ _) = True +okHsBootSig (GenericSig _ _) = False +okHsBootSig (FixSig _) = True +okHsBootSig _ = False okClsDclSig :: Sig a -> Bool okClsDclSig (SpecInstSig _) = False okClsDclSig _ = True -- All others OK okInstDclSig :: Sig a -> Bool -okInstDclSig (TypeSig _ _) = False -okInstDclSig (FixSig _) = False -okInstDclSig _ = True - -sigForThisGroup :: NameSet -> LSig Name -> Bool -sigForThisGroup ns sig - = case sigName sig of - Nothing -> False - Just n -> n `elemNameSet` ns +okInstDclSig (TypeSig _ _) = False +okInstDclSig (GenericSig _ _) = False +okInstDclSig (FixSig _) = False +okInstDclSig _ = True sigName :: LSig name -> Maybe name +-- Used only in Haddock sigName (L _ sig) = sigNameNoLoc sig sigNameNoLoc :: Sig name -> Maybe name +-- Used only in Haddock sigNameNoLoc (TypeSig n _) = Just (unLoc n) sigNameNoLoc (SpecSig n _ _) = Just (unLoc n) sigNameNoLoc (InlineSig n _) = Just (unLoc n) @@ -553,9 +708,10 @@ isVanillaLSig (L _(TypeSig {})) = True isVanillaLSig _ = False isTypeLSig :: LSig name -> Bool -- Type signatures -isTypeLSig (L _(TypeSig {})) = True -isTypeLSig (L _(IdSig {})) = True -isTypeLSig _ = False +isTypeLSig (L _(TypeSig {})) = True +isTypeLSig (L _(GenericSig {})) = True +isTypeLSig (L _(IdSig {})) = True +isTypeLSig _ = False isSpecLSig :: LSig name -> Bool isSpecLSig (L _(SpecSig {})) = True @@ -578,6 +734,7 @@ isInlineLSig _ = False hsSigDoc :: Sig name -> SDoc hsSigDoc (TypeSig {}) = ptext (sLit "type signature") +hsSigDoc (GenericSig {}) = ptext (sLit "default type signature") hsSigDoc (IdSig {}) = ptext (sLit "id signature") hsSigDoc (SpecSig {}) = ptext (sLit "SPECIALISE pragma") hsSigDoc (InlineSig {}) = ptext (sLit "INLINE pragma") @@ -592,6 +749,7 @@ eqHsSig :: Eq a => LSig a -> LSig a -> Bool eqHsSig (L _ (FixSig (FixitySig n1 _))) (L _ (FixSig (FixitySig n2 _))) = unLoc n1 == unLoc n2 eqHsSig (L _ (IdSig n1)) (L _ (IdSig n2)) = n1 == n2 eqHsSig (L _ (TypeSig n1 _)) (L _ (TypeSig n2 _)) = unLoc n1 == unLoc n2 +eqHsSig (L _ (GenericSig n1 _)) (L _ (GenericSig n2 _)) = unLoc n1 == unLoc n2 eqHsSig (L _ (InlineSig n1 _)) (L _ (InlineSig n2 _)) = unLoc n1 == unLoc n2 -- For specialisations, we don't have equality over -- HsType, so it's not convenient to spot duplicate @@ -605,6 +763,7 @@ instance (OutputableBndr name) => Outputable (Sig name) where ppr_sig :: OutputableBndr name => Sig name -> SDoc ppr_sig (TypeSig var ty) = pprVarSig (unLoc var) (ppr ty) +ppr_sig (GenericSig var ty) = ptext (sLit "default") <+> pprVarSig (unLoc var) (ppr ty) ppr_sig (IdSig id) = pprVarSig id (ppr (varType id)) ppr_sig (FixSig fix_sig) = ppr fix_sig ppr_sig (SpecSig var ty inl) = pragBrackets (pprSpec var (ppr ty) inl) @@ -626,14 +785,11 @@ pprSpec var pp_ty inl = ptext (sLit "SPECIALIZE") <+> pp_inl <+> pprVarSig var p pp_inl | isDefaultInlinePragma inl = empty | otherwise = ppr inl -pprTcSpecPrags :: Outputable id => id -> TcSpecPrags -> SDoc -pprTcSpecPrags _ IsDefaultMethod = ptext (sLit "") -pprTcSpecPrags gbl (SpecPrags ps) = vcat (map (pprSpecPrag gbl) ps) - -pprSpecPrag :: Outputable id => id -> Located TcSpecPrag -> SDoc -pprSpecPrag var (L _ (SpecPrag _expr inl)) = pprSpec var (ptext (sLit "")) inl +pprTcSpecPrags :: TcSpecPrags -> SDoc +pprTcSpecPrags IsDefaultMethod = ptext (sLit "") +pprTcSpecPrags (SpecPrags ps) = vcat (map (ppr . unLoc) ps) instance Outputable TcSpecPrag where - ppr (SpecPrag _ p) = ptext (sLit "SpecPrag") <+> ppr p + ppr (SpecPrag var _ inl) = pprSpec var (ptext (sLit "")) inl \end{code}