X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2FhsSyn%2FHsBinds.lhs;h=702e7365847e962c0759ef691d8cd044cd4f12a5;hp=c0f01a86108040e9cb4ad85e200d54a17474e8b3;hb=432b9c9322181a3644083e3c19b7e240d90659e7;hpb=a8427a4125e9b78e88a487eeabf018f1c6e8bc08 diff --git a/compiler/hsSyn/HsBinds.lhs b/compiler/hsSyn/HsBinds.lhs index c0f01a8..702e736 100644 --- a/compiler/hsSyn/HsBinds.lhs +++ b/compiler/hsSyn/HsBinds.lhs @@ -7,9 +7,14 @@ Datatype for: @BindGroup@, @Bind@, @Sig@, @Bind@. \begin{code} -module HsBinds where +{-# OPTIONS -fno-warn-incomplete-patterns #-} +-- The above warning supression flag is a temporary kludge. +-- While working on this module you are encouraged to remove it and fix +-- any warnings in the module. See +-- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings +-- for details -#include "HsVersions.h" +module HsBinds where import {-# SOURCE #-} HsExpr ( HsExpr, pprExpr, LHsExpr, MatchGroup, pprFunBind, @@ -28,6 +33,7 @@ import SrcLoc import Util import Var import Bag +import FastString \end{code} %************************************************************************ @@ -39,20 +45,29 @@ import Bag Global bindings (where clauses) \begin{code} -data HsLocalBinds id -- Bindings in a 'let' expression - -- or a 'where' clause - = HsValBinds (HsValBinds id) - | HsIPBinds (HsIPBinds id) - +-- During renaming, we need bindings where the left-hand sides +-- have been renamed but the the right-hand sides have not. +-- the ...LR datatypes are parametrized by two id types, +-- one for the left and one for the right. +-- Other than during renaming, these will be the same. + +type HsLocalBinds id = HsLocalBindsLR id id + +data HsLocalBindsLR idL idR -- Bindings in a 'let' expression + -- or a 'where' clause + = HsValBinds (HsValBindsLR idL idR) + | HsIPBinds (HsIPBinds idR) | EmptyLocalBinds -data HsValBinds id -- Value bindings (not implicit parameters) - = ValBindsIn -- Before typechecking - (LHsBinds id) [LSig id] -- Not dependency analysed +type HsValBinds id = HsValBindsLR id id + +data HsValBindsLR idL idR -- Value bindings (not implicit parameters) + = ValBindsIn -- Before typechecking + (LHsBindsLR idL idR) [LSig idR] -- Not dependency analysed -- Recursive by default - | ValBindsOut -- After renaming - [(RecFlag, LHsBinds id)] -- Dependency analysed, later bindings + | ValBindsOut -- After renaming + [(RecFlag, LHsBinds idL)] -- Dependency analysed, later bindings -- in the list may depend on earlier -- ones. [LSig Name] @@ -60,62 +75,74 @@ data HsValBinds id -- Value bindings (not implicit parameters) 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 -data HsBind id - = FunBind { -- FunBind is used for both functions f x = e - -- and variables f = \x -> e --- Reason 1: Special case for type inference: see TcBinds.tcMonoBinds --- --- Reason 2: instance decls can only have FunBinds, which is convenient --- If you change this, you'll need tochange e.g. rnMethodBinds +type LHsBindLR idL idR = Located (HsBindLR idL idR) +type LHsBindsLR idL idR = Bag (LHsBindLR idL idR) --- But note that the form f :: a->a = ... --- parses as a pattern binding, just like --- (f :: a -> a) = ... +data HsBindLR idL idR + = -- | FunBind is used for both functions @f x = e@ + -- and variables @f = \x -> e@ + -- + -- Reason 1: Special case for type inference: see 'TcBinds.tcMonoBinds'. + -- + -- Reason 2: Instance decls can only have FunBinds, which is convenient. + -- If you change this, you'll need to change e.g. rnMethodBinds + -- + -- But note that the form @f :: a->a = ...@ + -- parses as a pattern binding, just like + -- @(f :: a -> a) = ... @ + FunBind { - fun_id :: Located id, + fun_id :: Located idL, - fun_infix :: Bool, -- True => infix declaration + fun_infix :: Bool, -- ^ True => infix declaration - fun_matches :: MatchGroup id, -- The payload + fun_matches :: MatchGroup idR, -- ^ The payload - fun_co_fn :: HsWrapper, -- Coercion from the type of the MatchGroup to the type of + fun_co_fn :: HsWrapper, -- ^ Coercion from the type of the MatchGroup to the type of -- the Id. Example: + -- @ -- f :: Int -> forall a. a -> a -- f x y = y + -- @ -- Then the MatchGroup will have type (Int -> a' -> a') -- (with a free type variable a'). The coercion will take -- a CoreExpr of this type and convert it to a CoreExpr of -- type Int -> forall a'. a' -> a' -- Notice that the coercion captures the free a'. - bind_fvs :: NameSet, -- After the renamer, this contains a superset of the + bind_fvs :: NameSet, -- ^ After the renamer, this contains a superset of the -- Names of the other binders in this binding group that -- are free in the RHS of the defn -- Before renaming, and after typechecking, -- the field is unused; it's just an error thunk - fun_tick :: Maybe (Int,[id]) -- This is the (optional) module-local tick number. + fun_tick :: Maybe (Int,[idR]) -- ^ This is the (optional) module-local tick number. } | PatBind { -- The pattern is never a simple variable; -- That case is done by FunBind - pat_lhs :: LPat id, - pat_rhs :: GRHSs id, + pat_lhs :: LPat idL, + pat_rhs :: GRHSs idR, pat_rhs_ty :: PostTcType, -- Type of the GRHSs bind_fvs :: NameSet -- Same as for FunBind } | VarBind { -- Dictionary binding and suchlike - var_id :: id, -- All VarBinds are introduced by the type checker - var_rhs :: LHsExpr id -- Located only for consistency + var_id :: idL, -- All VarBinds are introduced by the type checker + var_rhs :: LHsExpr idR -- Located only for consistency } | AbsBinds { -- Binds abstraction; TRANSLATION - abs_tvs :: [TyVar], - abs_dicts :: [DictId], - abs_exports :: [([TyVar], id, id, [LPrag])], -- (tvs, poly_id, mono_id, prags) - abs_binds :: LHsBinds id -- The dictionary bindings and typechecked user bindings + abs_tvs :: [TyVar], + abs_dicts :: [DictId], -- 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, [LPrag])], -- (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 } @@ -138,12 +165,12 @@ placeHolderNames :: NameSet placeHolderNames = panic "placeHolderNames" ------------ -instance OutputableBndr id => Outputable (HsLocalBinds id) where +instance (OutputableBndr idL, OutputableBndr idR) => Outputable (HsLocalBindsLR idL idR) where ppr (HsValBinds bs) = ppr bs ppr (HsIPBinds bs) = ppr bs ppr EmptyLocalBinds = empty -instance OutputableBndr id => Outputable (HsValBinds id) where +instance (OutputableBndr idL, OutputableBndr idR) => Outputable (HsValBindsLR idL idR) where ppr (ValBindsIn binds sigs) = pprValBindsForUser binds sigs @@ -155,51 +182,51 @@ instance OutputableBndr id => Outputable (HsValBinds id) where pprValBindsForUser (unionManyBags (map snd sccs)) sigs where ppr_scc (rec_flag, binds) = pp_rec rec_flag <+> pprLHsBinds binds - pp_rec Recursive = ptext SLIT("rec") - pp_rec NonRecursive = ptext SLIT("nonrec") + pp_rec Recursive = ptext (sLit "rec") + pp_rec NonRecursive = ptext (sLit "nonrec") -- *not* pprLHsBinds because we don't want braces; 'let' and -- 'where' include a list of HsBindGroups and we don't want -- several groups of bindings each with braces around. -- Sort by location before printing -pprValBindsForUser :: (OutputableBndr id1, OutputableBndr id2) - => LHsBinds id1 -> [LSig id2] -> SDoc +pprValBindsForUser :: (OutputableBndr idL, OutputableBndr idR, OutputableBndr id2) + => LHsBindsLR idL idR -> [LSig id2] -> SDoc pprValBindsForUser binds sigs = pprDeeperList vcat (map snd (sort_by_loc decls)) where decls :: [(SrcSpan, SDoc)] decls = [(loc, ppr sig) | L loc sig <- sigs] ++ - [(loc, ppr bind) | L loc bind <- bagToList binds] + [(loc, ppr bind) | L loc bind <- bagToList binds] sort_by_loc decls = sortLe (\(l1,_) (l2,_) -> l1 <= l2) decls -pprLHsBinds :: OutputableBndr id => LHsBinds id -> SDoc +pprLHsBinds :: (OutputableBndr idL, OutputableBndr idR) => LHsBindsLR idL idR -> SDoc pprLHsBinds binds | isEmptyLHsBinds binds = empty | otherwise = lbrace <+> pprDeeperList vcat (map ppr (bagToList binds)) <+> rbrace ------------ -emptyLocalBinds :: HsLocalBinds a +emptyLocalBinds :: HsLocalBindsLR a b emptyLocalBinds = EmptyLocalBinds -isEmptyLocalBinds :: HsLocalBinds a -> Bool +isEmptyLocalBinds :: HsLocalBindsLR a b -> Bool isEmptyLocalBinds (HsValBinds ds) = isEmptyValBinds ds isEmptyLocalBinds (HsIPBinds ds) = isEmptyIPBinds ds isEmptyLocalBinds EmptyLocalBinds = True -isEmptyValBinds :: HsValBinds a -> Bool +isEmptyValBinds :: HsValBindsLR a b -> Bool isEmptyValBinds (ValBindsIn ds sigs) = isEmptyLHsBinds ds && null sigs isEmptyValBinds (ValBindsOut ds sigs) = null ds && null sigs -emptyValBindsIn, emptyValBindsOut :: HsValBinds a +emptyValBindsIn, emptyValBindsOut :: HsValBindsLR a b emptyValBindsIn = ValBindsIn emptyBag [] emptyValBindsOut = ValBindsOut [] [] -emptyLHsBinds :: LHsBinds id +emptyLHsBinds :: LHsBindsLR idL idR emptyLHsBinds = emptyBag -isEmptyLHsBinds :: LHsBinds id -> Bool +isEmptyLHsBinds :: LHsBindsLR idL idR -> Bool isEmptyLHsBinds = isEmptyBag ------------ @@ -235,13 +262,13 @@ So the desugarer tries to do a better job: in (fm,gm) \begin{code} -instance OutputableBndr id => Outputable (HsBind id) where +instance (OutputableBndr idL, OutputableBndr idR) => Outputable (HsBindLR idL idR) where ppr mbind = ppr_monobind mbind -ppr_monobind :: OutputableBndr id => HsBind id -> SDoc +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 }) = ppr var <+> equals <+> pprExpr (unLoc rhs) +ppr_monobind (VarBind { var_id = var, var_rhs = rhs }) = pprBndr CaseBind var <+> equals <+> pprExpr (unLoc rhs) ppr_monobind (FunBind { fun_id = fun, fun_infix = inf, fun_matches = matches, fun_tick = tick }) = @@ -252,7 +279,7 @@ ppr_monobind (FunBind { fun_id = fun, fun_infix = inf, ppr_monobind (AbsBinds { abs_tvs = tyvars, abs_dicts = dictvars, abs_exports = exports, abs_binds = val_binds }) - = sep [ptext SLIT("AbsBinds"), + = sep [ptext (sLit "AbsBinds"), brackets (interpp'SP tyvars), brackets (interpp'SP dictvars), brackets (sep (punctuate comma (map ppr_exp exports)))] @@ -262,7 +289,7 @@ ppr_monobind (AbsBinds { abs_tvs = tyvars, abs_dicts = dictvars, $$ pprLHsBinds val_binds ) where ppr_exp (tvs, gbl, lcl, prags) - = vcat [ppr gbl <+> ptext SLIT("<=") <+> ppr tvs <+> ppr lcl, + = vcat [ppr gbl <+> ptext (sLit "<=") <+> ppr tvs <+> ppr lcl, nest 2 (vcat (map (pprPrag gbl) prags))] \end{code} @@ -315,13 +342,18 @@ data HsWrapper | WpCompose HsWrapper HsWrapper -- (\a1..an. []) `WpCompose` (\x1..xn. []) -- = (\a1..an \x1..xn. []) - | WpCo Coercion -- A cast: [] `cast` co - -- Guaranteedn not the identity coercion + | WpCast Coercion -- A cast: [] `cast` co + -- Guaranteed not the identity coercion + + | WpApp Var -- [] d the 'd' is a type-class dictionary or coercion variable - | WpApp Var -- [] d the 'd' is a type-class dictionary | WpTyApp Type -- [] t the 't' is a type or corecion - | WpLam Id -- \d. [] the 'd' is a type-class dictionary - | WpTyLam TyVar -- \a. [] the 'a' is a type or coercion variable + -- ToDo: it'd be tidier if 't' was always a type (not coercion), + -- but that is inconvenient in Inst.instCallDicts + + | WpLam Var -- \d. [] the 'd' is a type-class dictionary or coercion variable + | WpTyLam TyVar -- \a. [] the 'a' is a type variable (not coercion var) + | WpInline -- inline_me [] Wrap inline around the thing -- Non-empty bindings, so that the identity coercion -- is always exactly WpHole @@ -329,17 +361,24 @@ data HsWrapper -- (would be nicer to be core bindings) instance Outputable HsWrapper where - ppr co_fn = pprHsWrapper (ptext SLIT("<>")) co_fn + ppr co_fn = pprHsWrapper (ptext (sLit "<>")) co_fn pprHsWrapper :: SDoc -> HsWrapper -> SDoc -pprHsWrapper it WpHole = it -pprHsWrapper it (WpCompose f1 f2) = pprHsWrapper (pprHsWrapper it f2) f1 -pprHsWrapper it (WpCo co) = it <+> ptext SLIT("`cast`") <+> pprParendType co -pprHsWrapper it (WpApp id) = it <+> ppr id -pprHsWrapper it (WpTyApp ty) = it <+> ptext SLIT("@") <+> pprParendType ty -pprHsWrapper it (WpLam id) = ptext SLIT("\\") <> pprBndr LambdaBind id <> dot <+> it -pprHsWrapper it (WpTyLam tv) = ptext SLIT("/\\") <> pprBndr LambdaBind tv <> dot <+> it -pprHsWrapper it (WpLet binds) = sep [ptext SLIT("let") <+> braces (ppr binds), it] +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] + help it WpInline = sep [ptext (sLit "_inline_me_"), 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) (<.>) :: HsWrapper -> HsWrapper -> HsWrapper WpHole <.> c = c @@ -349,13 +388,13 @@ c1 <.> c2 = c1 `WpCompose` c2 mkWpTyApps :: [Type] -> HsWrapper mkWpTyApps tys = mk_co_fn WpTyApp (reverse tys) -mkWpApps :: [Id] -> HsWrapper +mkWpApps :: [Var] -> HsWrapper mkWpApps ids = mk_co_fn WpApp (reverse ids) mkWpTyLams :: [TyVar] -> HsWrapper mkWpTyLams ids = mk_co_fn WpTyLam ids -mkWpLams :: [Id] -> HsWrapper +mkWpLams :: [Var] -> HsWrapper mkWpLams ids = mk_co_fn WpLam ids mk_co_fn :: (a -> HsWrapper) -> [a] -> HsWrapper @@ -366,7 +405,7 @@ idHsWrapper = WpHole isIdHsWrapper :: HsWrapper -> Bool isIdHsWrapper WpHole = True -isIdHsWrapper other = False +isIdHsWrapper _ = False \end{code} @@ -387,12 +426,18 @@ type LSig name = Located (Sig name) data Sig name -- Signatures and pragmas = -- An ordinary type signature -- f :: Num a => a -> a - TypeSig (Located name) -- A bog-std type signature - (LHsType name) + TypeSig (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 + -- and IdDetails. Otherwise it's just like a type + -- signature: there should be an accompanying binding + | IdSig Id -- An ordinary fixity declaration -- infixl *** 8 - | FixSig (FixitySig name) -- Fixity declaration + | FixSig (FixitySig name) -- An inline pragma -- {#- INLINE f #-} @@ -423,38 +468,34 @@ data Prag | SpecPrag (HsExpr Id) -- An expression, of the given specialised type, which PostTcType -- specialises the polymorphic function - [Id] -- Dicts mentioned free in the expression - -- Apr07: I think this is pretty useless - -- see Note [Const rule dicts] in DsBinds InlineSpec -- Inlining spec for the specialised function +isInlinePrag :: Prag -> Bool isInlinePrag (InlinePrag _) = True -isInlinePrag prag = False +isInlinePrag _ = False +isSpecPrag :: Prag -> Bool isSpecPrag (SpecPrag {}) = True -isSpecPrag prag = False +isSpecPrag _ = False \end{code} \begin{code} -okBindSig :: NameSet -> LSig Name -> Bool -okBindSig ns sig = sigForThisGroup ns sig +okBindSig :: Sig a -> Bool +okBindSig _ = True -okHsBootSig :: LSig Name -> Bool -okHsBootSig (L _ (TypeSig _ _)) = True -okHsBootSig (L _ (FixSig _)) = True -okHsBootSig sig = False +okHsBootSig :: Sig a -> Bool +okHsBootSig (TypeSig _ _) = True +okHsBootSig (FixSig _) = True +okHsBootSig _ = False -okClsDclSig :: LSig Name -> Bool -okClsDclSig (L _ (SpecInstSig _)) = False -okClsDclSig sig = True -- All others OK +okClsDclSig :: Sig a -> Bool +okClsDclSig (SpecInstSig _) = False +okClsDclSig _ = True -- All others OK -okInstDclSig :: NameSet -> LSig Name -> Bool -okInstDclSig ns lsig@(L _ sig) = ok ns sig - where - ok ns (TypeSig _ _) = False - ok ns (FixSig _) = False - ok ns (SpecInstSig _) = True - ok ns sig = sigForThisGroup ns lsig +okInstDclSig :: Sig a -> Bool +okInstDclSig (TypeSig _ _) = False +okInstDclSig (FixSig _) = False +okInstDclSig _ = True sigForThisGroup :: NameSet -> LSig Name -> Bool sigForThisGroup ns sig @@ -470,48 +511,59 @@ sigNameNoLoc (TypeSig n _) = Just (unLoc n) sigNameNoLoc (SpecSig n _ _) = Just (unLoc n) sigNameNoLoc (InlineSig n _) = Just (unLoc n) sigNameNoLoc (FixSig (FixitySig n _)) = Just (unLoc n) -sigNameNoLoc other = Nothing +sigNameNoLoc _ = Nothing isFixityLSig :: LSig name -> Bool isFixityLSig (L _ (FixSig {})) = True isFixityLSig _ = False -isVanillaLSig :: LSig name -> Bool +isVanillaLSig :: LSig name -> Bool -- User type signatures +-- A badly-named function, but it's part of the GHCi (used +-- by Haddock) so I don't want to change it gratuitously. isVanillaLSig (L _(TypeSig {})) = True -isVanillaLSig sig = False +isVanillaLSig _ = False + +isTypeLSig :: LSig name -> Bool -- Type signatures +isTypeLSig (L _(TypeSig {})) = True +isTypeLSig (L _(IdSig {})) = True +isTypeLSig _ = False isSpecLSig :: LSig name -> Bool isSpecLSig (L _(SpecSig {})) = True -isSpecLSig sig = False +isSpecLSig _ = False +isSpecInstLSig :: LSig name -> Bool isSpecInstLSig (L _ (SpecInstSig {})) = True -isSpecInstLSig sig = False +isSpecInstLSig _ = False isPragLSig :: LSig name -> Bool -- Identifies pragmas isPragLSig (L _ (SpecSig {})) = True isPragLSig (L _ (InlineSig {})) = True -isPragLSig other = False +isPragLSig _ = False isInlineLSig :: LSig name -> Bool -- Identifies inline pragmas isInlineLSig (L _ (InlineSig {})) = True -isInlineLSig other = False - -hsSigDoc (TypeSig {}) = ptext SLIT("type signature") -hsSigDoc (SpecSig {}) = ptext SLIT("SPECIALISE pragma") -hsSigDoc (InlineSig _ spec) = ppr spec <+> ptext SLIT("pragma") -hsSigDoc (SpecInstSig {}) = ptext SLIT("SPECIALISE instance pragma") -hsSigDoc (FixSig {}) = ptext SLIT("fixity declaration") +isInlineLSig _ = False + +hsSigDoc :: Sig name -> SDoc +hsSigDoc (TypeSig {}) = ptext (sLit "type signature") +hsSigDoc (IdSig {}) = ptext (sLit "id signature") +hsSigDoc (SpecSig {}) = ptext (sLit "SPECIALISE pragma") +hsSigDoc (InlineSig {}) = ptext (sLit "INLINE pragma") +hsSigDoc (SpecInstSig {}) = ptext (sLit "SPECIALISE instance pragma") +hsSigDoc (FixSig {}) = ptext (sLit "fixity declaration") \end{code} Signature equality is used when checking for duplicate signatures \begin{code} -eqHsSig :: LSig Name -> LSig Name -> Bool +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 _ (InlineSig n1 s1)) (L _ (InlineSig n2 s2)) = s1 == s2 && 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 -- specialisations here. Check for this later, when we're in Type land @@ -524,25 +576,26 @@ instance (OutputableBndr name) => Outputable (Sig name) where ppr_sig :: OutputableBndr name => Sig name -> SDoc ppr_sig (TypeSig var ty) = pprVarSig (unLoc var) ty +ppr_sig (IdSig id) = pprVarSig id (varType id) ppr_sig (FixSig fix_sig) = ppr fix_sig ppr_sig (SpecSig var ty inl) = pragBrackets (pprSpec var ty inl) ppr_sig (InlineSig var inl) = pragBrackets (ppr inl <+> ppr var) -ppr_sig (SpecInstSig ty) = pragBrackets (ptext SLIT("SPECIALIZE instance") <+> ppr ty) +ppr_sig (SpecInstSig ty) = pragBrackets (ptext (sLit "SPECIALIZE instance") <+> ppr ty) instance Outputable name => Outputable (FixitySig name) where ppr (FixitySig name fixity) = sep [ppr fixity, ppr name] pragBrackets :: SDoc -> SDoc -pragBrackets doc = ptext SLIT("{-#") <+> doc <+> ptext SLIT("#-}") +pragBrackets doc = ptext (sLit "{-#") <+> doc <+> ptext (sLit "#-}") pprVarSig :: (Outputable id, Outputable ty) => id -> ty -> SDoc pprVarSig var ty = sep [ppr var <+> dcolon, nest 2 (ppr ty)] pprSpec :: (Outputable id, Outputable ty) => id -> ty -> InlineSpec -> SDoc -pprSpec var ty inl = sep [ptext SLIT("SPECIALIZE") <+> ppr inl <+> pprVarSig var ty] +pprSpec var ty inl = sep [ptext (sLit "SPECIALIZE") <+> ppr inl <+> pprVarSig var ty] pprPrag :: Outputable id => id -> LPrag -> SDoc -pprPrag var (L _ (InlinePrag inl)) = ppr inl <+> ppr var -pprPrag var (L _ (SpecPrag expr ty _ inl)) = pprSpec var ty inl +pprPrag var (L _ (InlinePrag inl)) = ppr inl <+> ppr var +pprPrag var (L _ (SpecPrag _expr ty inl)) = pprSpec var ty inl \end{code}