\section[Name]{@Name@: to transmit name info from renamer to typechecker}
\begin{code}
-{-# 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/Commentary/CodingStyle#Warnings
--- for details
-
module Name (
-- Re-export the OccName stuff
module OccName,
import Maybes
import Binary
import FastMutInt
+import FastTypes
import FastString
import Outputable
import Data.IORef
-import GHC.Exts
import Data.Array
\end{code}
data Name = Name {
n_sort :: NameSort, -- What sort of name it is
n_occ :: !OccName, -- Its occurrence name
- n_uniq :: Int#, -- UNPACK doesn't work, recursive type
+ n_uniq :: FastInt, -- UNPACK doesn't work, recursive type
+--(note later when changing Int# -> FastInt: is that still true about UNPACK?)
n_loc :: !SrcSpan -- Definition site
}
nameSrcLoc :: Name -> SrcLoc
nameSrcSpan :: Name -> SrcSpan
-nameUnique name = mkUniqueGrimily (I# (n_uniq name))
+nameUnique name = mkUniqueGrimily (iBox (n_uniq name))
nameOccName name = n_occ name
nameSrcLoc name = srcSpanStart (n_loc name)
nameSrcSpan name = n_loc name
isWiredInName :: Name -> Bool
isWiredInName (Name {n_sort = WiredIn _ _ _}) = True
-isWiredInName other = False
+isWiredInName _ = False
wiredInNameTyThing_maybe :: Name -> Maybe TyThing
wiredInNameTyThing_maybe (Name {n_sort = WiredIn _ thing _}) = Just thing
-wiredInNameTyThing_maybe other = Nothing
+wiredInNameTyThing_maybe _ = Nothing
+isBuiltInSyntax :: Name -> Bool
isBuiltInSyntax (Name {n_sort = WiredIn _ _ BuiltInSyntax}) = True
-isBuiltInSyntax other = False
+isBuiltInSyntax _ = False
isExternalName (Name {n_sort = External _}) = True
isExternalName (Name {n_sort = WiredIn _ _ _}) = True
-isExternalName other = False
+isExternalName _ = False
isInternalName name = not (isExternalName name)
nameModule name = nameModule_maybe name `orElse` pprPanic "nameModule" (ppr name)
+nameModule_maybe :: Name -> Maybe Module
nameModule_maybe (Name { n_sort = External mod}) = Just mod
nameModule_maybe (Name { n_sort = WiredIn mod _ _}) = Just mod
-nameModule_maybe name = Nothing
+nameModule_maybe _ = Nothing
nameIsLocalOrFrom from name
| isExternalName name = from == nameModule name
isTyConName name = isTcOcc (nameOccName name)
isSystemName (Name {n_sort = System}) = True
-isSystemName other = False
+isSystemName _ = False
\end{code}
\begin{code}
mkInternalName :: Unique -> OccName -> SrcSpan -> Name
-mkInternalName uniq occ loc = Name { n_uniq = getKey# uniq, n_sort = Internal, n_occ = occ, n_loc = loc }
+mkInternalName uniq occ loc = Name { n_uniq = getKeyFastInt 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
mkExternalName :: Unique -> Module -> OccName -> SrcSpan -> Name
mkExternalName uniq mod occ loc
- = Name { n_uniq = getKey# uniq, n_sort = External mod,
+ = Name { n_uniq = getKeyFastInt uniq, n_sort = External mod,
n_occ = occ, n_loc = loc }
mkWiredInName :: Module -> OccName -> Unique -> TyThing -> BuiltInSyntax
-> Name
mkWiredInName mod occ uniq thing built_in
- = Name { n_uniq = getKey# uniq,
+ = Name { n_uniq = getKeyFastInt uniq,
n_sort = WiredIn mod thing built_in,
n_occ = occ, n_loc = wiredInSrcSpan }
mkSystemName :: Unique -> OccName -> Name
-mkSystemName uniq occ = Name { n_uniq = getKey# uniq, n_sort = System,
+mkSystemName uniq occ = Name { n_uniq = getKeyFastInt uniq, n_sort = System,
n_occ = occ, n_loc = noSrcSpan }
mkSystemVarName :: Unique -> FastString -> Name
mkFCallName :: Unique -> String -> Name
-- The encoded string completely describes the ccall
-mkFCallName uniq str = Name { n_uniq = getKey# uniq, n_sort = Internal,
+mkFCallName uniq str = Name { n_uniq = getKeyFastInt uniq, n_sort = Internal,
n_occ = mkVarOcc str, n_loc = noSrcSpan }
mkTickBoxOpName :: Unique -> String -> Name
mkTickBoxOpName uniq str
- = Name { n_uniq = getKey# uniq, n_sort = Internal,
+ = Name { n_uniq = getKeyFastInt uniq, n_sort = Internal,
n_occ = mkVarOcc str, n_loc = noSrcSpan }
mkIPName :: Unique -> OccName -> Name
mkIPName uniq occ
- = Name { n_uniq = getKey# uniq,
+ = Name { n_uniq = getKeyFastInt uniq,
n_sort = Internal,
n_occ = occ,
n_loc = noSrcSpan }
-- 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 -> Unique -> Name
-setNameUnique name uniq = name {n_uniq = getKey# uniq}
+setNameUnique name uniq = name {n_uniq = getKeyFastInt uniq}
tidyNameOcc :: Name -> OccName -> Name
-- We set the OccName of a Name when tidying
%************************************************************************
\begin{code}
-cmpName n1 n2 = I# (n_uniq n1) `compare` I# (n_uniq n2)
+cmpName :: Name -> Name -> Ordering
+cmpName n1 n2 = iBox (n_uniq n1) `compare` iBox (n_uniq n2)
\end{code}
\begin{code}
instance OutputableBndr Name where
pprBndr _ name = pprName name
-pprName name@(Name {n_sort = sort, n_uniq = u#, n_occ = occ})
+pprName :: Name -> SDoc
+pprName (Name {n_sort = sort, n_uniq = u, n_occ = occ})
= getPprStyle $ \ sty ->
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
- where uniq = mkUniqueGrimily (I# u#)
+ where uniq = mkUniqueGrimily (iBox u)
+pprExternal :: PprStyle -> Unique -> Module -> OccName -> Bool -> BuiltInSyntax -> SDoc
pprExternal sty uniq mod occ is_wired is_builtin
| codeStyle sty = ppr mod <> char '_' <> ppr_z_occ_name occ
-- In code style, always qualify
| otherwise = ppr_occ_name occ
where qual_name = qualName sty mod occ
+pprInternal :: PprStyle -> Unique -> OccName -> SDoc
pprInternal sty uniq occ
| codeStyle sty = pprUnique uniq
| debugStyle sty = ppr_occ_name occ <> braces (hsep [pprNameSpaceBrief (occNameSpace occ),
| otherwise = ppr_occ_name occ -- User style
-- Like Internal, except that we only omit the unique in Iface style
+pprSystem :: PprStyle -> Unique -> OccName -> SDoc
pprSystem sty uniq occ
| codeStyle sty = pprUnique uniq
| debugStyle sty = ppr_occ_name occ <> char '_' <> pprUnique uniq
-- is unlikely to be informative (like 's'),
-- so print the unique
+ppr_occ_name :: OccName -> SDoc
ppr_occ_name occ = ftext (occNameFS occ)
-- Don't use pprOccName; instead, just print the string of the OccName;
-- we print the namespace in the debug stuff above
-- In code style, we Z-encode the strings. The results of Z-encoding each FastString are
-- cached behind the scenes in the FastString implementation.
+ppr_z_occ_name :: OccName -> SDoc
ppr_z_occ_name occ = ftext (zEncodeFS (occNameFS occ))
--- Prints "Defined at <loc>" or "Defined in <mod>" information for a Name.
+-- Prints (if mod information is available) "Defined at <loc>" or
+-- "Defined in <mod>" information for a Name.
pprNameLoc :: Name -> SDoc
pprNameLoc name
| isGoodSrcSpan loc = pprDefnLoc loc
+ | isInternalName name || isSystemName name
+ = ptext SLIT("<no location info>")
| otherwise = ptext SLIT("Defined in ") <> ppr (nameModule name)
where loc = nameSrcSpan name
\end{code}
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