-- The Name type
Name, -- Abstract
- mkLocalName, mkSysLocalName, mkTopName,
- mkDerivedName, mkGlobalName,
- mkWiredInIdName, mkWiredInTyConName,
- maybeWiredInIdName, maybeWiredInTyConName,
- isWiredInName,
-
- nameUnique, setNameUnique, setNameProvenance, getNameProvenance,
- tidyTopName, mkNameVisible,
- nameOccName, nameModule, setNameOcc,
-
- isExportedName, nameSrcLoc,
- isLocallyDefinedName,
-
- isSysLocalName, isLocalName, isGlobalName, isExternallyVisibleName,
-
- pprNameProvenance,
-
- -- Misc
- Provenance(..), ImportReason(..), pprProvenance,
- ExportFlag(..), PrintUnqualified,
-
+ BuiltInSyntax(..),
+ mkInternalName, mkSystemName,
+ mkSystemVarName, mkSystemVarNameEncoded, mkSysTvName,
+ mkFCallName, mkIPName,
+ mkExternalName, mkWiredInName,
+
+ nameUnique, setNameUnique,
+ nameOccName, nameModule, nameModule_maybe,
+ setNameOcc,
+ hashName, localiseName,
+
+ nameSrcLoc, nameParent, nameParent_maybe,
+
+ isSystemName, isInternalName, isExternalName,
+ isTyVarName, isWiredInName, isBuiltInSyntax,
+ wiredInNameTyThing_maybe,
+ nameIsLocalOrFrom,
+
-- Class NamedThing and overloaded friends
NamedThing(..),
- modAndOcc, isExported,
- getSrcLoc, isLocallyDefined, getOccString
+ getSrcLoc, getOccString
) where
#include "HsVersions.h"
-import {-# SOURCE #-} Var ( Id )
-import {-# SOURCE #-} TyCon ( TyCon )
+import {-# SOURCE #-} TypeRep( TyThing )
import OccName -- All of it
-import CmdLineOpts ( opt_PprStyle_NoPrags, opt_OmitInterfacePragmas, opt_EnsureSplittableC )
-import BasicTypes ( IfaceFlavour(..) )
-
-import SrcLoc ( noSrcLoc, mkBuiltinSrcLoc, SrcLoc )
-import Unique ( pprUnique, Unique, Uniquable(..) )
+import Module ( Module )
+import SrcLoc ( noSrcLoc, wiredInSrcLoc, SrcLoc )
+import Unique ( Unique, Uniquable(..), getKey, pprUnique )
+import Maybes ( orElse )
import Outputable
-import GlaExts
\end{code}
-
%************************************************************************
%* *
\subsection[Name-datatype]{The @Name@ datatype, and name construction}
%************************************************************************
\begin{code}
-data Name
- = Local Unique
- OccName -- How to print it
- Bool -- True <=> this is a "sys-local"
- -- see notes just below
+data Name = Name {
+ n_sort :: NameSort, -- What sort of name it is
+ n_occ :: !OccName, -- Its occurrence name
+ n_uniq :: Unique,
+ n_loc :: !SrcLoc -- Definition site
+ }
+
+-- NOTE: we make the n_loc field strict to eliminate some potential
+-- (and real!) space leaks, due to the fact that we don't look at
+-- the SrcLoc in a Name all that often.
+
+data NameSort
+ = External Module (Maybe Name)
+ -- (Just parent) => this Name is a subordinate name of 'parent'
+ -- e.g. data constructor of a data type, method of a class
+ -- Nothing => not a subordinate
+
+ | WiredIn Module (Maybe Name) TyThing BuiltInSyntax
+ -- A variant of External, for wired-in things
+ | Internal -- A user-defined Id or TyVar
+ -- defined in the module being compiled
- | Global Unique
- Module -- The defining module
- OccName -- Its name in that module
- Provenance -- How it was defined
+ | System -- A system-defined Id or TyVar. Typically the
+ -- OccName is very uninformative (like 's')
+
+data BuiltInSyntax = BuiltInSyntax | UserSyntax
+-- BuiltInSyntax is for things like (:), [], tuples etc,
+-- which have special syntactic forms. They aren't "in scope"
+-- as such.
\end{code}
-Sys-locals are only used internally. When the compiler generates (say)
-a fresh desguar variable it always calls it "ds", and of course it gets
-a fresh unique. But when printing -ddump-xx dumps, we must print it with
-its unique, because there'll be a lot of "ds" variables. That debug
-printing issue is the ONLY way in which sys-locals are different. I think.
+Notes about the NameSorts:
-Before anything gets printed in interface files or output code, it's
-fed through a 'tidy' processor, which zaps the OccNames to have
-unique names; and converts all sys-locals to ordinary locals
-If any desugarer sys-locals have survived that far, they get changed to
-"ds1", "ds2", etc.
+1. Initially, top-level Ids (including locally-defined ones) get External names,
+ and all other local Ids get Internal names
-Things with a @Global@ name are given C static labels, so they finally
-appear in the .o file's symbol table. They appear in the symbol table
-in the form M.n. If originally-local things have this property they
-must be made @Global@ first.
+2. Things with a External name are given C static labels, so they finally
+ appear in the .o file's symbol table. They appear in the symbol table
+ in the form M.n. If originally-local things have this property they
+ must be made @External@ first.
+3. In the tidy-core phase, a External that is not visible to an importer
+ is changed to Internal, and a Internal that is visible is changed to External
-\begin{code}
-mkLocalName :: Unique -> OccName -> Name
-mkLocalName uniq occ = Local uniq occ False
- -- NB: You might worry that after lots of huffing and
- -- puffing we might end up with two local names with distinct
- -- uniques, but the same OccName. Indeed we can, but that's ok
- -- * the insides of the compiler don't care: they use the Unique
- -- * when printing for -ddump-xxx you can switch on -dppr-debug to get the
- -- uniques if you get confused
- -- * for interface files we tidyCore first, which puts the uniques
- -- into the print name (see setNameVisibility below)
+4. A System Name differs in the following ways:
+ a) has unique attached when printing dumps
+ b) unifier eliminates sys tyvars in favour of user provs where possible
-mkGlobalName :: Unique -> Module -> OccName -> Provenance -> Name
-mkGlobalName = Global
-
-mkSysLocalName :: Unique -> FAST_STRING -> Name
-mkSysLocalName uniq fs = Local uniq (varOcc fs) True
-
-mkTopName :: Unique -> Module -> FAST_STRING -> Name
- -- Make a top-level name; make it Global if top-level
- -- things should be externally visible; Local otherwise
- -- This chap is only used *after* the tidyCore phase
- -- Notably, it is used during STG lambda lifting
- --
- -- We have to make sure that the name is globally unique
- -- and we don't have tidyCore to help us. So we append
- -- the unique. Hack! Hack!
-mkTopName uniq mod fs
- | all_toplev_ids_visible = Global uniq mod occ (LocalDef noSrcLoc NotExported)
- | otherwise = Local uniq occ False
- where
- occ = varOcc (_PK_ ((_UNPK_ fs) ++ show uniq))
-
-mkWiredInIdName :: Unique -> Module -> OccName -> Id -> Name
-mkWiredInIdName uniq mod occ id = Global uniq mod occ (WiredInId id)
-
--- mkWiredInTyConName takes a FAST_STRING instead of
--- an OccName, which is a bit yukky but that's what the
--- clients find easiest.
-mkWiredInTyConName :: Unique -> Module -> FAST_STRING -> TyCon -> Name
-mkWiredInTyConName uniq mod occ tycon
- = Global uniq mod (tcOcc occ) (WiredInTyCon tycon)
-
-mkDerivedName :: (OccName -> OccName)
- -> Name -- Base name
- -> Unique -- New unique
- -> Name -- Result is always a value name
-
-mkDerivedName f (Global _ mod occ prov) uniq = Global uniq mod (f occ) prov
-mkDerivedName f (Local _ occ sys) uniq = Local uniq (f occ) sys
+ Before anything gets printed in interface files or output code, it's
+ fed through a 'tidy' processor, which zaps the OccNames to have
+ unique names; and converts all sys-locals to user locals
+ If any desugarer sys-locals have survived that far, they get changed to
+ "ds1", "ds2", etc.
--- When we renumber/rename things, we need to be
--- able to change a Name's Unique to match the cached
--- one in the thing it's the name of. If you know what I mean.
-setNameUnique (Local _ occ sys) u = Local u occ sys
-setNameUnique (Global _ mod occ prov) u = Global u mod occ prov
+Built-in syntax => It's a syntactic form, not "in scope" (e.g. [])
-setNameOcc :: Name -> OccName -> Name
- -- Give the thing a new OccName, *and*
- -- record that it's no longer a sys-local
- -- This is used by the tidy-up pass
-setNameOcc (Global uniq mod _ prov) occ = Global uniq mod occ prov
-setNameOcc (Local uniq _ sys) occ = Local uniq occ False
+Wired-in thing => The thing (Id, TyCon) is fully known to the compiler,
+ not read from an interface file.
+ E.g. Bool, True, Int, Float, and many others
+
+All built-in syntax is for wired-in things.
+
+\begin{code}
+nameUnique :: Name -> Unique
+nameOccName :: Name -> OccName
+nameModule :: Name -> Module
+nameSrcLoc :: Name -> SrcLoc
+
+nameUnique name = n_uniq name
+nameOccName name = n_occ name
+nameSrcLoc name = n_loc name
\end{code}
+\begin{code}
+nameIsLocalOrFrom :: Module -> Name -> Bool
+isInternalName :: Name -> Bool
+isExternalName :: Name -> Bool
+isSystemName :: Name -> Bool
+isWiredInName :: Name -> Bool
-%************************************************************************
-%* *
-\subsection{Setting provenance and visibility
-%* *
-%************************************************************************
+isWiredInName (Name {n_sort = WiredIn _ _ _ _}) = True
+isWiredInName other = False
-tidyTopName is applied to top-level names in the final program
+wiredInNameTyThing_maybe :: Name -> Maybe TyThing
+wiredInNameTyThing_maybe (Name {n_sort = WiredIn _ _ thing _}) = Just thing
+wiredInNameTyThing_maybe other = Nothing
-For top-level things, it globalises Local names
- (if all top-level things should be visible)
- and localises non-exported Global names
- (if only exported things should be visible)
+isBuiltInSyntax (Name {n_sort = WiredIn _ _ _ BuiltInSyntax}) = True
+isBuiltInSyntax other = False
-In all cases except an exported global, it gives it a new occurrence name.
+isExternalName (Name {n_sort = External _ _}) = True
+isExternalName (Name {n_sort = WiredIn _ _ _ _}) = True
+isExternalName other = False
-The "visibility" here concerns whether the .o file's symbol table
-mentions the thing; if so, it needs a module name in its symbol.
-The Global things are "visible" and the Local ones are not
+isInternalName name = not (isExternalName name)
-Why should things be "visible"? Certainly they must be if they
-are exported. But also:
+nameParent_maybe :: Name -> Maybe Name
+nameParent_maybe (Name {n_sort = External _ p}) = p
+nameParent_maybe (Name {n_sort = WiredIn _ p _ _}) = p
+nameParent_maybe other = Nothing
-(a) In certain (prelude only) modules we split up the .hc file into
- lots of separate little files, which are separately compiled by the C
- compiler. That gives lots of little .o files. The idea is that if
- you happen to mention one of them you don't necessarily pull them all
- in. (Pulling in a piece you don't need can be v bad, because it may
- mention other pieces you don't need either, and so on.)
-
- Sadly, splitting up .hc files means that local names (like s234) are
- now globally visible, which can lead to clashes between two .hc
- files. So unlocaliseWhatnot goes through making all the local things
- into global things, essentially by giving them full names so when they
- are printed they'll have their module name too. Pretty revolting
- really.
+nameParent :: Name -> Name
+nameParent name = case nameParent_maybe name of
+ Just parent -> parent
+ Nothing -> name
-(b) When optimisation is on we want to make all the internal
- top-level defns externally visible
+nameModule name = nameModule_maybe name `orElse` pprPanic "nameModule" (ppr name)
+nameModule_maybe (Name { n_sort = External mod _}) = Just mod
+nameModule_maybe (Name { n_sort = WiredIn mod _ _ _}) = Just mod
+nameModule_maybe name = Nothing
-\begin{code}
-tidyTopName :: Module -> TidyOccEnv -> Name -> (TidyOccEnv, Name)
-tidyTopName mod env name
- | isExported name = (env, name) -- Don't fiddle with an exported name
- -- It should be in the TidyOccEnv already
- | otherwise = (env', name')
- where
- prov = getNameProvenance name
- uniq = nameUnique name
- (env', occ') = tidyOccName env (nameOccName name)
-
- name' | all_toplev_ids_visible = Global uniq mod occ' prov
- | otherwise = Local uniq occ' False
-
-all_toplev_ids_visible =
- not opt_OmitInterfacePragmas || -- Pragmas can make them visible
- opt_EnsureSplittableC -- Splitting requires visiblilty
-\end{code}
+nameIsLocalOrFrom from name
+ | isExternalName name = from == nameModule name
+ | otherwise = True
-\begin{code}
-setNameProvenance :: Name -> Provenance -> Name
- -- setNameProvenance used to only change the provenance of
- -- Implicit-provenance things, but that gives bad error messages
- -- for names defined twice in the same module, so I changed it to
- -- set the provenance of *any* global (SLPJ Jun 97)
-setNameProvenance (Global uniq mod occ _) prov = Global uniq mod occ prov
-setNameProvenance other_name prov = other_name
-
-getNameProvenance :: Name -> Provenance
-getNameProvenance (Global uniq mod occ prov) = prov
-getNameProvenance (Local _ _ _) = LocalDef noSrcLoc NotExported
-\end{code}
+isTyVarName :: Name -> Bool
+isTyVarName name = isTvOcc (nameOccName name)
-\begin{code}
--- make the Name globally visible regardless.
-mkNameVisible :: Module -> Unique -> Name -> Name
-mkNameVisible mod occ_uniq nm@(Global _ _ _ _) = nm
-mkNameVisible mod occ_uniq nm@(Local uniq occ _)
- = Global uniq mod occ (LocalDef noSrcLoc Exported)
+isSystemName (Name {n_sort = System}) = True
+isSystemName other = False
\end{code}
%************************************************************************
%* *
-\subsection{Provenance and export info}
+\subsection{Making names}
%* *
%************************************************************************
\begin{code}
-data Provenance
- = NoProvenance
-
- | LocalDef -- Defined locally
- SrcLoc -- Defn site
- ExportFlag -- Whether it's exported
-
- | NonLocalDef -- Defined non-locally
- ImportReason
- IfaceFlavour -- Whether the defn site is an .hi-boot file
- PrintUnqualified
-
- | WiredInTyCon TyCon -- There's a wired-in version
- | WiredInId Id -- ...ditto...
-
-data ImportReason
- = UserImport Module SrcLoc Bool -- Imported from module M on line L
- -- Note the M may well not be the defining module
- -- for this thing!
- -- The Bool is true iff the thing was named *explicitly* in the import spec,
- -- rather than being imported as part of a group; e.g.
- -- import B
- -- import C( T(..) )
- -- Here, everything imported by B, and the constructors of T
- -- are not named explicitly; only T is named explicitly.
- -- This info is used when warning of unused names.
-
- | ImplicitImport -- Imported implicitly for some other reason
-
-
-type PrintUnqualified = Bool -- True <=> the unqualified name of this thing is
- -- in scope in this module, so print it
- -- unqualified in error messages
-
-data ExportFlag = Exported | NotExported
-\end{code}
-
-Something is "Exported" if it may be mentioned by another module without
-warning. The crucial thing about Exported things is that they must
-never be dropped as dead code, even if they aren't used in this module.
-Furthermore, being Exported means that we can't see all call sites of the thing.
-
-Exported things include:
-
- - explicitly exported Ids, including data constructors,
- class method selectors
+mkInternalName :: Unique -> OccName -> SrcLoc -> Name
+mkInternalName uniq occ loc = Name { n_uniq = uniq, n_sort = Internal, n_occ = occ, n_loc = loc }
+ -- NB: You might worry that after lots of huffing and
+ -- puffing we might end up with two local names with distinct
+ -- uniques, but the same OccName. Indeed we can, but that's ok
+ -- * the insides of the compiler don't care: they use the Unique
+ -- * when printing for -ddump-xxx you can switch on -dppr-debug to get the
+ -- uniques if you get confused
+ -- * for interface files we tidyCore first, which puts the uniques
+ -- into the print name (see setNameVisibility below)
- - dfuns from instance decls
+mkExternalName :: Unique -> Module -> OccName -> Maybe Name -> SrcLoc -> Name
+mkExternalName uniq mod occ mb_parent loc
+ = Name { n_uniq = uniq, n_sort = External mod mb_parent,
+ n_occ = occ, n_loc = loc }
+
+mkWiredInName :: Module -> OccName -> Unique
+ -> Maybe Name -> TyThing -> BuiltInSyntax -> Name
+mkWiredInName mod occ uniq mb_parent thing built_in
+ = Name { n_uniq = uniq,
+ n_sort = WiredIn mod mb_parent thing built_in,
+ n_occ = occ, n_loc = wiredInSrcLoc }
+
+mkSystemName :: Unique -> OccName -> Name
+mkSystemName uniq occ = Name { n_uniq = uniq, n_sort = System,
+ n_occ = occ, n_loc = noSrcLoc }
+
+mkSystemVarName :: Unique -> UserFS -> Name
+mkSystemVarName uniq fs = mkSystemName uniq (mkVarOcc fs)
+
+-- Use this version when the string is already encoded. Avoids duplicating
+-- the string each time a new name is created.
+mkSystemVarNameEncoded :: Unique -> EncodedFS -> Name
+mkSystemVarNameEncoded uniq fs = mkSystemName uniq (mkSysOccFS varName fs)
+
+mkSysTvName :: Unique -> EncodedFS -> Name
+mkSysTvName uniq fs = mkSystemName uniq (mkSysOccFS tvName fs)
+
+mkFCallName :: Unique -> EncodedString -> Name
+ -- The encoded string completely describes the ccall
+mkFCallName uniq str = Name { n_uniq = uniq, n_sort = Internal,
+ n_occ = mkFCallOcc str, n_loc = noSrcLoc }
+
+mkIPName :: Unique -> OccName -> Name
+mkIPName uniq occ
+ = Name { n_uniq = uniq,
+ n_sort = Internal,
+ n_occ = occ,
+ n_loc = noSrcLoc }
+\end{code}
-Being Exported is *not* the same as finally appearing in the .o file's
-symbol table. For example, a local Id may be mentioned in an Exported
-Id's unfolding in the interface file, in which case the local Id goes
-out too.
+\begin{code}
+-- When we renumber/rename things, we need to be
+-- able to change a Name's Unique to match the cached
+-- one in the thing it's the name of. If you know what I mean.
+setNameUnique name uniq = name {n_uniq = uniq}
+setNameOcc :: Name -> OccName -> Name
+setNameOcc name occ = name {n_occ = occ}
-\begin{code}
--- pprNameProvenance is used in error messages to say where a name came from
-pprNameProvenance :: Name -> SDoc
-pprNameProvenance name = pprProvenance (getNameProvenance name)
-
-pprProvenance :: Provenance -> SDoc
-pprProvenance NoProvenance = ptext SLIT("No provenance")
-pprProvenance (LocalDef loc _) = ptext SLIT("defined at") <+> ppr loc
-pprProvenance (WiredInTyCon tc) = ptext SLIT("Wired-in tycon")
-pprProvenance (WiredInId id) = ptext SLIT("Wired-in id")
-pprProvenance (NonLocalDef ImplicitImport _ _)
- = ptext SLIT("implicitly imported")
-pprProvenance (NonLocalDef (UserImport mod loc _) _ _)
- = ptext SLIT("imported from") <+> ppr mod <+> ptext SLIT("at") <+> ppr loc
+localiseName :: Name -> Name
+localiseName n = n { n_sort = Internal }
\end{code}
%************************************************************************
\begin{code}
-nameUnique :: Name -> Unique
-nameModAndOcc :: Name -> (Module, OccName) -- Globals only
-nameOccName :: Name -> OccName
-nameModule :: Name -> Module
-nameSrcLoc :: Name -> SrcLoc
-isLocallyDefinedName :: Name -> Bool
-isExportedName :: Name -> Bool
-isWiredInName :: Name -> Bool
-isLocalName :: Name -> Bool
-isGlobalName :: Name -> Bool
-isExternallyVisibleName :: Name -> Bool
-
-
-
-nameUnique (Local u _ _) = u
-nameUnique (Global u _ _ _) = u
-
-nameOccName (Local _ occ _) = occ
-nameOccName (Global _ _ occ _) = occ
-
-nameModule (Global _ mod occ _) = mod
-
-nameModAndOcc (Global _ mod occ _) = (mod,occ)
-
-isExportedName (Global _ _ _ (LocalDef _ Exported)) = True
-isExportedName other = False
-
-nameSrcLoc (Global _ _ _ (LocalDef loc _)) = loc
-nameSrcLoc (Global _ _ _ (NonLocalDef (UserImport _ loc _) _ _)) = loc
-nameSrcLoc (Global _ _ _ (WiredInTyCon _)) = mkBuiltinSrcLoc
-nameSrcLoc (Global _ _ _ (WiredInId _)) = mkBuiltinSrcLoc
-nameSrcLoc other = noSrcLoc
-
-isLocallyDefinedName (Local _ _ _) = True
-isLocallyDefinedName (Global _ _ _ (LocalDef _ _)) = True
-isLocallyDefinedName other = False
-
--- Things the compiler "knows about" are in some sense
--- "imported". When we are compiling the module where
--- the entities are defined, we need to be able to pick
--- them out, often in combination with isLocallyDefined.
-isWiredInName (Global _ _ _ (WiredInTyCon _)) = True
-isWiredInName (Global _ _ _ (WiredInId _)) = True
-isWiredInName _ = False
-
-maybeWiredInIdName :: Name -> Maybe Id
-maybeWiredInIdName (Global _ _ _ (WiredInId id)) = Just id
-maybeWiredInIdName other = Nothing
-
-maybeWiredInTyConName :: Name -> Maybe TyCon
-maybeWiredInTyConName (Global _ _ _ (WiredInTyCon tc)) = Just tc
-maybeWiredInTyConName other = Nothing
-
-
-isLocalName (Local _ _ _) = True
-isLocalName _ = False
-
-isSysLocalName (Local _ _ sys) = sys
-isSysLocalName other = False
-
-isGlobalName (Global _ _ _ _) = True
-isGlobalName other = False
-
--- Global names are by definition those that are visible
--- outside the module, *as seen by the linker*. Externally visible
--- does not mean visible at the source level (that's isExported).
-isExternallyVisibleName name = isGlobalName name
+hashName :: Name -> Int
+hashName name = getKey (nameUnique name)
\end{code}
%************************************************************************
\begin{code}
-cmpName n1 n2 = c n1 n2
- where
- c (Local u1 _ _) (Local u2 _ _) = compare u1 u2
- c (Local _ _ _) _ = LT
- c (Global u1 _ _ _) (Global u2 _ _ _) = compare u1 u2
- c (Global _ _ _ _) _ = GT
+cmpName n1 n2 = n_uniq n1 `compare` n_uniq n2
\end{code}
\begin{code}
a /= b = case (a `compare` b) of { EQ -> False; _ -> True }
instance Ord Name where
- a <= b = case (a `compare` b) of { LT -> True; EQ -> True; GT -> False }
- a < b = case (a `compare` b) of { LT -> True; EQ -> False; GT -> False }
+ a <= b = case (a `compare` b) of { LT -> True; EQ -> True; GT -> False }
+ a < b = case (a `compare` b) of { LT -> True; EQ -> False; GT -> False }
a >= b = case (a `compare` b) of { LT -> False; EQ -> True; GT -> True }
a > b = case (a `compare` b) of { LT -> False; EQ -> False; GT -> True }
compare a b = cmpName a b
\begin{code}
instance Outputable Name where
- -- When printing interfaces, all Locals have been given nice print-names
ppr name = pprName name
-pprName (Local uniq occ sys_local)
- = getPprStyle $ \ sty ->
- if codeStyle sty then
- pprUnique uniq -- When printing in code we required all names to
- -- be globally unique; for example, we use this identifier
- -- for the closure name. So we just print the unique alone.
- else
- pprOccName occ <> pp_local_extra sty uniq
- where
- pp_local_extra sty uniq
- | sys_local = underscore <> pprUnique uniq -- Must print uniques for sys_locals
- | debugStyle sty = text "{-" <> pprUnique uniq <> text "-}"
- | otherwise = empty
-
-
-pprName (Global uniq mod occ prov)
+instance OutputableBndr Name where
+ pprBndr _ name = pprName name
+
+pprName (Name {n_sort = sort, n_uniq = uniq, n_occ = occ})
= getPprStyle $ \ sty ->
- if codeStyle sty then
- ppr mod <> underscore <> ppr occ
- else
- pp_mod_dot sty <> ppr occ <> pp_global_debug sty uniq prov
- where
- pp_mod_dot sty
- = case prov of -- Omit home module qualifier if in scope
- LocalDef _ _ -> pp_qual dot (user_sty || iface_sty)
- NonLocalDef _ hif omit -> pp_qual (pp_hif hif) (omit && user_sty)
- -- Hack: omit qualifers on wired in things
- -- in user style only
- WiredInTyCon _ -> pp_qual dot user_sty
- WiredInId _ -> pp_qual dot user_sty
- NoProvenance -> pp_qual dot False
- where
- user_sty = userStyle sty
- iface_sty = ifaceStyle sty
-
- pp_qual sep omit_qual
- | omit_qual = empty
- | otherwise = pprModule mod <> sep
-
- pp_hif HiFile = dot -- Vanilla case
- pp_hif HiBootFile = text "!" -- M!t indicates a name imported from a .hi-boot interface
-
- pp_global_debug sty uniq prov
- | debugStyle sty = hcat [text "{-", pprUnique uniq, prov_p prov, text "-}"]
- | otherwise = empty
-
- prov_p prov | opt_PprStyle_NoPrags = empty
- | otherwise = comma <> pp_prov prov
-
-pp_prov (LocalDef _ Exported) = char 'x'
-pp_prov (LocalDef _ NotExported) = char 'l'
-pp_prov (NonLocalDef ImplicitImport _ _) = char 'i'
-pp_prov (NonLocalDef explicitimport _ _) = char 'I'
-pp_prov (WiredInTyCon _) = char 'W'
-pp_prov (WiredInId _) = char 'w'
-pp_prov NoProvenance = char '?'
+ case sort of
+ WiredIn mod _ _ builtin -> pprExternal sty uniq mod occ True builtin
+ External mod _ -> pprExternal sty uniq mod occ False UserSyntax
+ System -> pprSystem sty uniq occ
+ Internal -> pprInternal sty uniq occ
+
+pprExternal sty uniq mod occ is_wired is_builtin
+ | codeStyle sty = ppr mod <> char '_' <> ppr_occ_name occ
+ -- In code style, always qualify
+ -- ToDo: maybe we could print all wired-in things unqualified
+ -- in code style, to reduce symbol table bloat?
+ | debugStyle sty = ppr mod <> dot <> ppr_occ_name occ
+ <> braces (hsep [if is_wired then ptext SLIT("(w)") else empty,
+ text (briefOccNameFlavour occ),
+ pprUnique uniq])
+ | BuiltInSyntax <- is_builtin = ppr_occ_name occ
+ -- never qualify builtin syntax
+ | unqualStyle sty mod occ = ppr_occ_name occ
+ | otherwise = ppr mod <> dot <> ppr_occ_name occ
+
+pprInternal sty uniq occ
+ | codeStyle sty = pprUnique uniq
+ | debugStyle sty = ppr_occ_name occ <> braces (hsep [text (briefOccNameFlavour occ),
+ pprUnique uniq])
+ | otherwise = ppr_occ_name occ -- User style
+
+-- Like Internal, except that we only omit the unique in Iface style
+pprSystem sty uniq occ
+ | codeStyle sty = pprUnique uniq
+ | debugStyle sty = ppr_occ_name occ <> char '_' <> pprUnique uniq
+ <> braces (text (briefOccNameFlavour occ))
+ | otherwise = ppr_occ_name occ <> char '_' <> pprUnique uniq
+ -- If the tidy phase hasn't run, the OccName
+ -- is unlikely to be informative (like 's'),
+ -- so print the unique
+
+ppr_occ_name occ = pprEncodedFS (occNameFS occ)
+ -- Don't use pprOccName; instead, just print the string of the OccName;
+ -- we print the namespace in the debug stuff above
\end{code}
-
%************************************************************************
%* *
\subsection{Overloaded functions related to Names}
\begin{code}
class NamedThing a where
- getOccName :: a -> OccName -- Even RdrNames can do this!
+ getOccName :: a -> OccName
getName :: a -> Name
getOccName n = nameOccName (getName n) -- Default method
\end{code}
\begin{code}
-modAndOcc :: NamedThing a => a -> (Module, OccName)
getSrcLoc :: NamedThing a => a -> SrcLoc
-isLocallyDefined :: NamedThing a => a -> Bool
-isExported :: NamedThing a => a -> Bool
getOccString :: NamedThing a => a -> String
-modAndOcc = nameModAndOcc . getName
-isExported = isExportedName . getName
getSrcLoc = nameSrcLoc . getName
-isLocallyDefined = isLocallyDefinedName . getName
-getOccString x = occNameString (getOccName x)
+getOccString = occNameString . getOccName
\end{code}
-\begin{code}
-{-# SPECIALIZE isLocallyDefined :: Name -> Bool #-}
-\end{code}
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