X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2FbasicTypes%2FName.lhs;h=303e0c749ac4cf2956a045aa77c1c5d5a4678dd0;hb=d83e7dcffa89d5e7576fa059526b1b7df76249a0;hp=1a0e155c8ad3e8603e4f59f7eb83c2f001a4e2e8;hpb=fe6b0fa38eeafd116fc9d64b2443b773b2a59245;p=ghc-hetmet.git diff --git a/ghc/compiler/basicTypes/Name.lhs b/ghc/compiler/basicTypes/Name.lhs index 1a0e155..303e0c7 100644 --- a/ghc/compiler/basicTypes/Name.lhs +++ b/ghc/compiler/basicTypes/Name.lhs @@ -10,46 +10,36 @@ module Name ( -- The Name type Name, -- Abstract - mkLocalName, mkSysLocalName, mkCCallName, - mkTopName, mkIPName, - mkDerivedName, mkGlobalName, mkKnownKeyGlobal, mkWiredInName, + mkLocalName, mkSysLocalName, mkFCallName, + mkIPName, + mkGlobalName, mkKnownKeyGlobal, mkWiredInName, nameUnique, setNameUnique, - tidyTopName, nameOccName, nameModule, nameModule_maybe, setNameOcc, nameRdrName, setNameModuleAndLoc, - toRdrName, hashName, + toRdrName, hashName, + globaliseName, localiseName, - nameSrcLoc, nameIsLocallyDefined, isDllName, nameIsFrom, nameIsLocalOrFrom, + nameSrcLoc, isSystemName, isLocalName, isGlobalName, isExternallyVisibleName, - isTyVarName, + isTyVarName, isDllName, + nameIsLocalOrFrom, isHomePackageName, - -- Environment - NameEnv, mkNameEnv, - emptyNameEnv, unitNameEnv, nameEnvElts, - extendNameEnv_C, extendNameEnv, foldNameEnv, - plusNameEnv, plusNameEnv_C, extendNameEnv, extendNameEnvList, - lookupNameEnv, lookupNameEnv_NF, delFromNameEnv, elemNameEnv, - - -- Class NamedThing and overloaded friends NamedThing(..), - getSrcLoc, getOccString, toRdrName, - isFrom, isLocalOrFrom + getSrcLoc, getOccString, toRdrName ) where #include "HsVersions.h" import OccName -- All of it -import Module ( Module, moduleName, mkVanillaModule, isModuleInThisPackage ) +import Module ( Module, moduleName, mkVanillaModule, isHomeModule ) import RdrName ( RdrName, mkRdrOrig, mkRdrUnqual, rdrNameOcc, rdrNameModule ) -import CmdLineOpts ( opt_Static, opt_OmitInterfacePragmas, opt_EnsureSplittableC ) +import CmdLineOpts ( opt_Static ) import SrcLoc ( builtinSrcLoc, noSrcLoc, SrcLoc ) -import Unique ( Unique, Uniquable(..), u2i, pprUnique, pprUnique10 ) +import Unique ( Unique, Uniquable(..), u2i, pprUnique ) import FastTypes -import Maybes ( expectJust ) -import UniqFM import Outputable \end{code} @@ -121,26 +111,29 @@ nameModule_maybe name = Nothing \end{code} \begin{code} -nameIsLocallyDefined :: Name -> Bool -nameIsFrom :: Module -> Name -> Bool nameIsLocalOrFrom :: Module -> Name -> Bool isLocalName :: Name -> Bool -- Not globals isGlobalName :: Name -> Bool isSystemName :: Name -> Bool isExternallyVisibleName :: Name -> Bool +isHomePackageName :: Name -> Bool isGlobalName (Name {n_sort = Global _}) = True isGlobalName other = False isLocalName name = not (isGlobalName name) -nameIsLocallyDefined name = isLocalName name - nameIsLocalOrFrom from (Name {n_sort = Global mod}) = mod == from nameIsLocalOrFrom from other = True -nameIsFrom from (Name {n_sort = Global mod}) = mod == from -nameIsFrom from other = pprPanic "nameIsFrom" (ppr other) +isHomePackageName (Name {n_sort = Global mod}) = isHomeModule mod +isHomePackageName other = True -- Local and system names + +isDllName :: Name -> Bool -- Does this name refer to something in a different DLL? +isDllName nm = not opt_Static && not (isHomePackageName nm) + +isTyVarName :: Name -> Bool +isTyVarName name = isTvOcc (nameOccName name) -- Global names are by definition those that are visible -- outside the module, *as seen by the linker*. Externally visible @@ -173,7 +166,6 @@ mkLocalName uniq occ loc = Name { n_uniq = uniq, n_sort = Local, n_occ = occ, n_ mkGlobalName :: Unique -> Module -> OccName -> SrcLoc -> Name mkGlobalName uniq mod occ loc = Name { n_uniq = uniq, n_sort = Global mod, n_occ = occ, n_loc = loc } - mkKnownKeyGlobal :: RdrName -> Unique -> Name mkKnownKeyGlobal rdr_name uniq @@ -188,10 +180,10 @@ mkSysLocalName :: Unique -> UserFS -> Name mkSysLocalName uniq fs = Name { n_uniq = uniq, n_sort = System, n_occ = mkVarOcc fs, n_loc = noSrcLoc } -mkCCallName :: Unique -> EncodedString -> Name +mkFCallName :: Unique -> EncodedString -> Name -- The encoded string completely describes the ccall -mkCCallName uniq str = Name { n_uniq = uniq, n_sort = Local, - n_occ = mkCCallOcc str, n_loc = noSrcLoc } +mkFCallName uniq str = Name { n_uniq = uniq, n_sort = Local, + n_occ = mkFCallOcc str, n_loc = noSrcLoc } mkIPName :: Unique -> OccName -> Name mkIPName uniq occ @@ -199,14 +191,6 @@ mkIPName uniq occ n_sort = Local, n_occ = occ, n_loc = noSrcLoc } - ---------------------------------------------------------------------- -mkDerivedName :: (OccName -> OccName) - -> Name -- Base name - -> Unique -- New unique - -> Name -- Result is always a value name - -mkDerivedName f name uniq = name {n_uniq = uniq, n_occ = f (n_occ name)} \end{code} \begin{code} @@ -216,11 +200,14 @@ mkDerivedName f name uniq = name {n_uniq = uniq, n_occ = f (n_occ name)} setNameUnique name uniq = name {n_uniq = uniq} 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 name occ = name {n_occ = occ} +globaliseName :: Name -> Module -> Name +globaliseName n mod = n { n_sort = Global mod } + +localiseName :: Name -> Name +localiseName n = n { n_sort = Local } + setNameModuleAndLoc :: Name -> Module -> SrcLoc -> Name setNameModuleAndLoc name mod loc = name {n_sort = set (n_sort name), n_loc = loc} where @@ -230,91 +217,6 @@ setNameModuleAndLoc name mod loc = name {n_sort = set (n_sort name), n_loc = loc %************************************************************************ %* * -\subsection{Tidying a name} -%* * -%************************************************************************ - -tidyTopName is applied to top-level names in the final program - -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) - -In all cases except an exported global, it gives it a new occurrence name. - -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 - -Why should things be "visible"? Certainly they must be if they -are exported. But also: - -(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. - -(b) When optimisation is on we want to make all the internal - top-level defns externally visible - -\begin{code} -tidyTopName :: Module -> TidyOccEnv -> Bool -> Name -> (TidyOccEnv, Name) -tidyTopName mod env is_exported - name@(Name { n_occ = occ, n_sort = sort, n_uniq = uniq, n_loc = loc }) - = case sort of - Global _ | is_exported -> (env, name) - | otherwise -> (env, name { n_sort = new_sort }) - -- Don't change the occurrnce names of globals, because many of them - -- are bound by either a class declaration or a data declaration - -- or an explicit user export. - - other | is_exported -> (env', name { n_sort = Global mod, n_occ = occ' }) - | otherwise -> (env', name { n_sort = new_sort, n_occ = occ' }) - where - (env', occ') = tidyOccName env occ - new_sort = mkLocalTopSort mod - -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! - -- (Used only by the STG lambda lifter.) -mkTopName uniq mod fs - = Name { n_uniq = uniq, - n_sort = mkLocalTopSort mod, - n_occ = mkVarOcc (_PK_ ((_UNPK_ fs) ++ show uniq)), - n_loc = noSrcLoc } - -mkLocalTopSort :: Module -> NameSort -mkLocalTopSort mod - | all_toplev_ids_visible = Global mod - | otherwise = Local - -all_toplev_ids_visible - = not opt_OmitInterfacePragmas || -- Pragmas can make them visible - opt_EnsureSplittableC -- Splitting requires visiblilty -\end{code} - - - -%************************************************************************ -%* * \subsection{Predicates and selectors} %* * %************************************************************************ @@ -329,18 +231,6 @@ nameRdrName :: Name -> RdrName -- and an unqualified name just for Locals nameRdrName (Name { n_occ = occ, n_sort = Global mod }) = mkRdrOrig (moduleName mod) occ nameRdrName (Name { n_occ = occ }) = mkRdrUnqual occ - -isDllName :: Name -> Bool - -- Does this name refer to something in a different DLL? -isDllName nm = not opt_Static && - not (isLocalName nm) && -- isLocalName test needed 'cos - not (isModuleInThisPackage (nameModule nm)) -- nameModule won't work on local names - - - -isTyVarName :: Name -> Bool -isTyVarName name = isTvOcc (nameOccName name) - \end{code} @@ -376,50 +266,6 @@ instance NamedThing Name where %************************************************************************ %* * -\subsection{Name environment} -%* * -%************************************************************************ - -\begin{code} -type NameEnv a = UniqFM a -- Domain is Name - -emptyNameEnv :: NameEnv a -mkNameEnv :: [(Name,a)] -> NameEnv a -nameEnvElts :: NameEnv a -> [a] -extendNameEnv_C :: (a->a->a) -> NameEnv a -> Name -> a -> NameEnv a -extendNameEnv :: NameEnv a -> Name -> a -> NameEnv a -plusNameEnv :: NameEnv a -> NameEnv a -> NameEnv a -plusNameEnv_C :: (a->a->a) -> NameEnv a -> NameEnv a -> NameEnv a -extendNameEnvList:: NameEnv a -> [(Name,a)] -> NameEnv a -delFromNameEnv :: NameEnv a -> Name -> NameEnv a -elemNameEnv :: Name -> NameEnv a -> Bool -unitNameEnv :: Name -> a -> NameEnv a -lookupNameEnv :: NameEnv a -> Name -> Maybe a -lookupNameEnv_NF :: NameEnv a -> Name -> a -mapNameEnv :: (a->b) -> NameEnv a -> NameEnv b -foldNameEnv :: (a -> b -> b) -> b -> NameEnv a -> b - -emptyNameEnv = emptyUFM -foldNameEnv = foldUFM -mkNameEnv = listToUFM -nameEnvElts = eltsUFM -extendNameEnv_C = addToUFM_C -extendNameEnv = addToUFM -plusNameEnv = plusUFM -plusNameEnv_C = plusUFM_C -extendNameEnvList= addListToUFM -delFromNameEnv = delFromUFM -elemNameEnv = elemUFM -mapNameEnv = mapUFM -unitNameEnv = unitUFM - -lookupNameEnv = lookupUFM -lookupNameEnv_NF env n = expectJust "lookupNameEnv_NF" (lookupUFM env n) -\end{code} - - -%************************************************************************ -%* * \subsection{Pretty printing} %* * %************************************************************************ @@ -436,27 +282,32 @@ pprName name@(Name {n_sort = sort, n_uniq = uniq, n_occ = occ}) System -> pprSysLocal sty uniq occ Local -> pprLocal sty uniq occ -pprLocal sty uniq occ - | codeStyle sty = pprUnique uniq - | debugStyle sty = pprOccName occ <> - text "{-" <> pprUnique10 uniq <> text "-}" - | otherwise = pprOccName occ - pprGlobal sty name uniq mod occ | codeStyle sty = ppr (moduleName mod) <> char '_' <> pprOccName occ | debugStyle sty = ppr (moduleName mod) <> dot <> pprOccName occ <> - text "{-" <> pprUnique10 uniq <> text "-}" + text "{-" <> pprUnique uniq <> text "-}" | unqualStyle sty name = pprOccName occ | otherwise = ppr (moduleName mod) <> dot <> pprOccName occ +pprLocal sty uniq occ + | codeStyle sty = pprUnique uniq + | debugStyle sty = pprOccName occ <> + text "{-" <> pprUnique uniq <> text "-}" + | otherwise = pprOccName occ -- User and Iface styles + +-- Like Local, except that we only omit the unique in Iface style pprSysLocal sty uniq occ | codeStyle sty = pprUnique uniq + | ifaceStyle sty = pprOccName occ -- The tidy phase has ensured that OccNames + -- are enough | otherwise = pprOccName occ <> char '_' <> pprUnique uniq + -- If the tidy phase hasn't run, the OccName + -- is unlikely to be informative (like 's'), + -- so print the unique \end{code} - %************************************************************************ %* * \subsection{Overloaded functions related to Names} @@ -475,13 +326,9 @@ class NamedThing a where getSrcLoc :: NamedThing a => a -> SrcLoc getOccString :: NamedThing a => a -> String toRdrName :: NamedThing a => a -> RdrName -isFrom :: NamedThing a => Module -> a -> Bool -isLocalOrFrom :: NamedThing a => Module -> a -> Bool getSrcLoc = nameSrcLoc . getName getOccString = occNameString . getOccName toRdrName = nameRdrName . getName -isFrom mod x = nameIsFrom mod (getName x) -isLocalOrFrom mod x = nameIsLocalOrFrom mod ( getName x) \end{code}