X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fiface%2FIfaceSyn.lhs;h=fc0c3b8aeb6952d8a563a10fd7993d76453b4faa;hb=a6f203cb4574c75d6bf091c7e1608061bbf51f78;hp=20cc5c6c08581ad8cb9a7d442bf9a4c519b279f2;hpb=17b297d97d327620ed6bfab942f8992b2446f1bf;p=ghc-hetmet.git diff --git a/compiler/iface/IfaceSyn.lhs b/compiler/iface/IfaceSyn.lhs index 20cc5c6..fc0c3b8 100644 --- a/compiler/iface/IfaceSyn.lhs +++ b/compiler/iface/IfaceSyn.lhs @@ -4,11 +4,11 @@ % \begin{code} -{-# OPTIONS_GHC -w #-} +{-# OPTIONS -w #-} -- 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/WorkingConventions#Warnings +-- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings -- for details module IfaceSyn ( @@ -38,6 +38,7 @@ import IfaceType import NewDemand import Class import UniqFM +import UniqSet import NameSet import Name import CostCentre @@ -244,7 +245,7 @@ data IfaceLetBndr = IfLetBndr FastString IfaceType IfaceIdInfo Note [IdInfo on nested let-bindings] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -Occasionally we want to preserve IdInfo on nested let bindings The one +Occasionally we want to preserve IdInfo on nested let bindings. The one that came up was a NOINLINE pragma on a let-binding inside an INLINE function. The user (Duncan Coutts) really wanted the NOINLINE control to cross the separate compilation boundary. @@ -338,57 +339,85 @@ ifaceDeclSubBndrs :: IfaceDecl -> [OccName] -- Deeply revolting, because it has to predict what gets bound, -- especially the question of whether there's a wrapper for a datacon -ifaceDeclSubBndrs (IfaceClass {ifCtxt = sc_ctxt, ifName = cls_occ, - ifSigs = sigs, ifATs = ats }) - = co_occs ++ - [tc_occ, dc_occ, dcww_occ] ++ - [op | IfaceClassOp op _ _ <- sigs] ++ - [ifName at | at <- ats ] ++ - [mkSuperDictSelOcc n cls_occ | n <- [1..n_ctxt]] - where - n_ctxt = length sc_ctxt - n_sigs = length sigs - tc_occ = mkClassTyConOcc cls_occ - dc_occ = mkClassDataConOcc cls_occ - co_occs | is_newtype = [mkNewTyCoOcc tc_occ] - | otherwise = [] - dcww_occ -- | is_newtype = mkDataConWrapperOcc dc_occ -- Newtypes have wrapper but no worker - | otherwise = mkDataConWorkerOcc dc_occ -- Otherwise worker but no wrapper - is_newtype = n_sigs + n_ctxt == 1 -- Sigh +-- N.B. the set of names returned here *must* match the set of +-- TyThings returned by HscTypes.implicitTyThings, in the sense that +-- TyThing.getOccName should define a bijection between the two lists. +-- This invariant is used in LoadIface.loadDecl (see note [Tricky iface loop]) +-- The order of the list does not matter. +ifaceDeclSubBndrs IfaceData {ifCons = IfAbstractTyCon} = [] -ifaceDeclSubBndrs IfaceData {ifCons = IfAbstractTyCon} - = [] -- Newtype ifaceDeclSubBndrs (IfaceData {ifName = tc_occ, - ifCons = IfNewTyCon ( - IfCon { ifConOcc = con_occ, - ifConFields = fields - }), - ifFamInst = famInst}) - = fields ++ [con_occ, mkDataConWorkerOcc con_occ, mkNewTyCoOcc tc_occ] - ++ famInstCo famInst tc_occ + ifCons = IfNewTyCon ( + IfCon { ifConOcc = con_occ, + ifConFields = fields + }), + ifFamInst = famInst}) + = -- fields (names of selectors) + fields ++ + -- implicit coerion and (possibly) family instance coercion + (mkNewTyCoOcc tc_occ) : (famInstCo famInst tc_occ) ++ + -- data constructor and worker (newtypes don't have a wrapper) + [con_occ, mkDataConWorkerOcc con_occ] + ifaceDeclSubBndrs (IfaceData {ifName = tc_occ, ifCons = IfDataTyCon cons, ifFamInst = famInst}) - = nub (concatMap ifConFields cons) -- Eliminate duplicate fields - ++ concatMap dc_occs cons + = -- fields (names of selectors) + nub (concatMap ifConFields cons) -- Eliminate duplicate fields + -- (possibly) family instance coercion; + -- there is no implicit coercion for non-newtypes ++ famInstCo famInst tc_occ + -- for each data constructor in order, + -- data constructor, worker, and (possibly) wrapper + ++ concatMap dc_occs cons where dc_occs con_decl | has_wrapper = [con_occ, work_occ, wrap_occ] | otherwise = [con_occ, work_occ] where - con_occ = ifConOcc con_decl - strs = ifConStricts con_decl - wrap_occ = mkDataConWrapperOcc con_occ - work_occ = mkDataConWorkerOcc con_occ + con_occ = ifConOcc con_decl -- DataCon namespace + wrap_occ = mkDataConWrapperOcc con_occ -- Id namespace + work_occ = mkDataConWorkerOcc con_occ -- Id namespace + strs = ifConStricts con_decl has_wrapper = any isMarkedStrict strs -- See MkId.mkDataConIds (sigh) || not (null . ifConEqSpec $ con_decl) || isJust famInst -- ToDo: may miss strictness in existential dicts -ifaceDeclSubBndrs _other = [] +ifaceDeclSubBndrs (IfaceClass {ifCtxt = sc_ctxt, ifName = cls_occ, + ifSigs = sigs, ifATs = ats }) + = -- dictionary datatype: + -- type constructor + tc_occ : + -- (possibly) newtype coercion + co_occs ++ + -- data constructor (DataCon namespace) + -- data worker (Id namespace) + -- no wrapper (class dictionaries never have a wrapper) + [dc_occ, dcww_occ] ++ + -- associated types + [ifName at | at <- ats ] ++ + -- superclass selectors + [mkSuperDictSelOcc n cls_occ | n <- [1..n_ctxt]] ++ + -- operation selectors + [op | IfaceClassOp op _ _ <- sigs] + where + n_ctxt = length sc_ctxt + n_sigs = length sigs + tc_occ = mkClassTyConOcc cls_occ + dc_occ = mkClassDataConOcc cls_occ + co_occs | is_newtype = [mkNewTyCoOcc tc_occ] + | otherwise = [] + dcww_occ = mkDataConWorkerOcc dc_occ + is_newtype = n_sigs + n_ctxt == 1 -- Sigh + +ifaceDeclSubBndrs (IfaceSyn {ifName = tc_occ, + ifFamInst = famInst}) + = famInstCo famInst tc_occ + +ifaceDeclSubBndrs _ = [] -- coercion for data/newtype family instances famInstCo Nothing baseOcc = [] @@ -404,17 +433,17 @@ pprIfaceDecl (IfaceId {ifName = var, ifType = ty, ifIdInfo = info}) nest 2 (ppr info) ] pprIfaceDecl (IfaceForeign {ifName = tycon}) - = hsep [ptext SLIT("foreign import type dotnet"), ppr tycon] + = hsep [ptext (sLit "foreign import type dotnet"), ppr tycon] pprIfaceDecl (IfaceSyn {ifName = tycon, ifTyVars = tyvars, ifOpenSyn = False, ifSynRhs = mono_ty, ifFamInst = mbFamInst}) - = hang (ptext SLIT("type") <+> pprIfaceDeclHead [] tycon tyvars) + = hang (ptext (sLit "type") <+> pprIfaceDeclHead [] tycon tyvars) 4 (vcat [equals <+> ppr mono_ty, pprFamily mbFamInst]) pprIfaceDecl (IfaceSyn {ifName = tycon, ifTyVars = tyvars, ifOpenSyn = True, ifSynRhs = mono_ty}) - = hang (ptext SLIT("type family") <+> pprIfaceDeclHead [] tycon tyvars) + = hang (ptext (sLit "type family") <+> pprIfaceDeclHead [] tycon tyvars) 4 (dcolon <+> ppr mono_ty) pprIfaceDecl (IfaceData {ifName = tycon, ifGeneric = gen, ifCtxt = context, @@ -425,25 +454,25 @@ pprIfaceDecl (IfaceData {ifName = tycon, ifGeneric = gen, ifCtxt = context, pprFamily mbFamInst]) where pp_nd = case condecls of - IfAbstractTyCon -> ptext SLIT("data") - IfOpenDataTyCon -> ptext SLIT("data family") - IfDataTyCon _ -> ptext SLIT("data") - IfNewTyCon _ -> ptext SLIT("newtype") + IfAbstractTyCon -> ptext (sLit "data") + IfOpenDataTyCon -> ptext (sLit "data family") + IfDataTyCon _ -> ptext (sLit "data") + IfNewTyCon _ -> ptext (sLit "newtype") pprIfaceDecl (IfaceClass {ifCtxt = context, ifName = clas, ifTyVars = tyvars, ifFDs = fds, ifATs = ats, ifSigs = sigs, ifRec = isrec}) - = hang (ptext SLIT("class") <+> pprIfaceDeclHead context clas tyvars <+> pprFundeps fds) + = hang (ptext (sLit "class") <+> pprIfaceDeclHead context clas tyvars <+> pprFundeps fds) 4 (vcat [pprRec isrec, sep (map ppr ats), sep (map ppr sigs)]) -pprRec isrec = ptext SLIT("RecFlag") <+> ppr isrec -pprGen True = ptext SLIT("Generics: yes") -pprGen False = ptext SLIT("Generics: no") +pprRec isrec = ptext (sLit "RecFlag") <+> ppr isrec +pprGen True = ptext (sLit "Generics: yes") +pprGen False = ptext (sLit "Generics: no") -pprFamily Nothing = ptext SLIT("FamilyInstance: none") -pprFamily (Just famInst) = ptext SLIT("FamilyInstance:") <+> ppr famInst +pprFamily Nothing = ptext (sLit "FamilyInstance: none") +pprFamily (Just famInst) = ptext (sLit "FamilyInstance:") <+> ppr famInst instance Outputable IfaceClassOp where ppr (IfaceClassOp n dm ty) = ppr n <+> ppr dm <+> dcolon <+> ppr ty @@ -453,10 +482,10 @@ pprIfaceDeclHead context thing tyvars = hsep [pprIfaceContext context, parenSymOcc thing (ppr thing), pprIfaceTvBndrs tyvars] -pp_condecls tc IfAbstractTyCon = ptext SLIT("{- abstract -}") +pp_condecls tc IfAbstractTyCon = ptext (sLit "{- abstract -}") pp_condecls tc (IfNewTyCon c) = equals <+> pprIfaceConDecl tc c pp_condecls tc IfOpenDataTyCon = empty -pp_condecls tc (IfDataTyCon cs) = equals <+> sep (punctuate (ptext SLIT(" |")) +pp_condecls tc (IfDataTyCon cs) = equals <+> sep (punctuate (ptext (sLit " |")) (map (pprIfaceConDecl tc) cs)) pprIfaceConDecl :: OccName -> IfaceConDecl -> SDoc @@ -466,11 +495,11 @@ pprIfaceConDecl tc ifConEqSpec = eq_spec, ifConCtxt = ctxt, ifConArgTys = arg_tys, ifConStricts = strs, ifConFields = fields }) = sep [main_payload, - if is_infix then ptext SLIT("Infix") else empty, + if is_infix then ptext (sLit "Infix") else empty, if null strs then empty - else nest 4 (ptext SLIT("Stricts:") <+> hsep (map ppr strs)), + else nest 4 (ptext (sLit "Stricts:") <+> hsep (map ppr strs)), if null fields then empty - else nest 4 (ptext SLIT("Fields:") <+> hsep (map ppr fields))] + else nest 4 (ptext (sLit "Fields:") <+> hsep (map ppr fields))] where main_payload = ppr name <+> dcolon <+> pprIfaceForAllPart (univ_tvs ++ ex_tvs) (eq_ctxt ++ ctxt) pp_tau @@ -490,22 +519,22 @@ instance Outputable IfaceRule where ppr (IfaceRule { ifRuleName = name, ifActivation = act, ifRuleBndrs = bndrs, ifRuleHead = fn, ifRuleArgs = args, ifRuleRhs = rhs }) = sep [hsep [doubleQuotes (ftext name), ppr act, - ptext SLIT("forall") <+> pprIfaceBndrs bndrs], + ptext (sLit "forall") <+> pprIfaceBndrs bndrs], nest 2 (sep [ppr fn <+> sep (map (pprIfaceExpr parens) args), - ptext SLIT("=") <+> ppr rhs]) + ptext (sLit "=") <+> ppr rhs]) ] instance Outputable IfaceInst where ppr (IfaceInst {ifDFun = dfun_id, ifOFlag = flag, ifInstCls = cls, ifInstTys = mb_tcs}) - = hang (ptext SLIT("instance") <+> ppr flag + = hang (ptext (sLit "instance") <+> ppr flag <+> ppr cls <+> brackets (pprWithCommas ppr_rough mb_tcs)) 2 (equals <+> ppr dfun_id) instance Outputable IfaceFamInst where ppr (IfaceFamInst {ifFamInstFam = fam, ifFamInstTys = mb_tcs, ifFamInstTyCon = tycon_id}) - = hang (ptext SLIT("family instance") <+> + = hang (ptext (sLit "family instance") <+> ppr fam <+> brackets (pprWithCommas ppr_rough mb_tcs)) 2 (equals <+> ppr tycon_id) @@ -544,32 +573,32 @@ pprIfaceExpr add_par e@(IfaceLam _ _) collect bs e = (reverse bs, e) pprIfaceExpr add_par (IfaceCase scrut bndr ty [(con, bs, rhs)]) - = add_par (sep [ptext SLIT("case") <+> char '@' <+> pprParendIfaceType ty - <+> pprIfaceExpr noParens scrut <+> ptext SLIT("of") + = add_par (sep [ptext (sLit "case") <+> char '@' <+> pprParendIfaceType ty + <+> pprIfaceExpr noParens scrut <+> ptext (sLit "of") <+> ppr bndr <+> char '{' <+> ppr_con_bs con bs <+> arrow, pprIfaceExpr noParens rhs <+> char '}']) pprIfaceExpr add_par (IfaceCase scrut bndr ty alts) - = add_par (sep [ptext SLIT("case") <+> char '@' <+> pprParendIfaceType ty - <+> pprIfaceExpr noParens scrut <+> ptext SLIT("of") + = add_par (sep [ptext (sLit "case") <+> char '@' <+> pprParendIfaceType ty + <+> pprIfaceExpr noParens scrut <+> ptext (sLit "of") <+> ppr bndr <+> char '{', nest 2 (sep (map ppr_alt alts)) <+> char '}']) pprIfaceExpr add_par (IfaceCast expr co) = sep [pprIfaceExpr parens expr, - nest 2 (ptext SLIT("`cast`")), + nest 2 (ptext (sLit "`cast`")), pprParendIfaceType co] pprIfaceExpr add_par (IfaceLet (IfaceNonRec b rhs) body) - = add_par (sep [ptext SLIT("let {"), + = add_par (sep [ptext (sLit "let {"), nest 2 (ppr_bind (b, rhs)), - ptext SLIT("} in"), + ptext (sLit "} in"), pprIfaceExpr noParens body]) pprIfaceExpr add_par (IfaceLet (IfaceRec pairs) body) - = add_par (sep [ptext SLIT("letrec {"), + = add_par (sep [ptext (sLit "letrec {"), nest 2 (sep (map ppr_bind pairs)), - ptext SLIT("} in"), + ptext (sLit "} in"), pprIfaceExpr noParens body]) pprIfaceExpr add_par (IfaceNote note body) = add_par (ppr note <+> pprIfaceExpr parens body) @@ -591,8 +620,8 @@ pprIfaceApp fun args = sep (pprIfaceExpr parens fun : args) ------------------ instance Outputable IfaceNote where ppr (IfaceSCC cc) = pprCostCentreCore cc - ppr IfaceInlineMe = ptext SLIT("__inline_me") - ppr (IfaceCoreNote s) = ptext SLIT("__core_note") <+> pprHsString (mkFastString s) + ppr IfaceInlineMe = ptext (sLit "__inline_me") + ppr (IfaceCoreNote s) = ptext (sLit "__core_note") <+> pprHsString (mkFastString s) instance Outputable IfaceConAlt where @@ -605,16 +634,16 @@ instance Outputable IfaceConAlt where ------------------ instance Outputable IfaceIdInfo where ppr NoInfo = empty - ppr (HasInfo is) = ptext SLIT("{-") <+> fsep (map ppr is) <+> ptext SLIT("-}") + ppr (HasInfo is) = ptext (sLit "{-") <+> fsep (map ppr is) <+> ptext (sLit "-}") instance Outputable IfaceInfoItem where - ppr (HsUnfold unf) = ptext SLIT("Unfolding:") <+> + ppr (HsUnfold unf) = ptext (sLit "Unfolding:") <+> parens (pprIfaceExpr noParens unf) - ppr (HsInline act) = ptext SLIT("Inline:") <+> ppr act - ppr (HsArity arity) = ptext SLIT("Arity:") <+> int arity - ppr (HsStrictness str) = ptext SLIT("Strictness:") <+> pprIfaceStrictSig str - ppr HsNoCafRefs = ptext SLIT("HasNoCafRefs") - ppr (HsWorker w a) = ptext SLIT("Worker:") <+> ppr w <+> int a + ppr (HsInline act) = ptext (sLit "Inline:") <+> ppr act + ppr (HsArity arity) = ptext (sLit "Arity:") <+> int arity + ppr (HsStrictness str) = ptext (sLit "Strictness:") <+> pprIfaceStrictSig str + ppr HsNoCafRefs = ptext (sLit "HasNoCafRefs") + ppr (HsWorker w a) = ptext (sLit "Worker:") <+> ppr w <+> int a \end{code} @@ -635,14 +664,14 @@ Of course, equality is also done modulo alpha conversion. data GenIfaceEq a = Equal -- Definitely exactly the same | NotEqual -- Definitely different - | EqBut a -- The same provided these Names have not changed + | EqBut (UniqSet a) -- The same provided these things have not changed -type IfaceEq = GenIfaceEq NameSet +type IfaceEq = GenIfaceEq Name -instance Outputable IfaceEq where - ppr Equal = ptext SLIT("Equal") - ppr NotEqual = ptext SLIT("NotEqual") - ppr (EqBut occset) = ptext SLIT("EqBut") <+> ppr (nameSetToList occset) +instance Outputable a => Outputable (GenIfaceEq a) where + ppr Equal = ptext (sLit "Equal") + ppr NotEqual = ptext (sLit "NotEqual") + ppr (EqBut occset) = ptext (sLit "EqBut") <+> ppr (uniqSetToList occset) bool :: Bool -> IfaceEq bool True = Equal