import IOBase ( fixIO )
#endif
import IOExts ( IORef, newIORef, readIORef, writeIORef, unsafePerformIO )
+import IO ( hPutStr, stderr )
import HsSyn
import RdrHsSyn
import RnHsSyn ( RenamedFixitySig )
import HscTypes ( AvailEnv, lookupType,
- OrigNameEnv(..), OrigNameNameEnv, OrigNameIParamEnv,
- WhetherHasOrphans, ImportVersion,
- PersistentRenamerState(..), IsBootInterface, Avails,
+ NameSupply(..),
+ ImportedModuleInfo, WhetherHasOrphans, ImportVersion,
+ PersistentRenamerState(..), Avails,
DeclsMap, IfaceInsts, IfaceRules,
- HomeSymbolTable, PackageTypeEnv,
- PersistentCompilerState(..), GlobalRdrEnv,
+ HomeSymbolTable, TyThing,
+ PersistentCompilerState(..), GlobalRdrEnv, LocalRdrEnv,
HomeIfaceTable, PackageIfaceTable,
RdrAvailInfo )
import BasicTypes ( Version, defaultFixity )
import ErrUtils ( addShortErrLocLine, addShortWarnLocLine,
- pprBagOfErrors, ErrMsg, WarnMsg, Message
+ Message, Messages, errorsFound, warningsFound,
+ printErrorsAndWarnings
)
import RdrName ( RdrName, dummyRdrVarName, rdrNameModule, rdrNameOcc,
RdrNameEnv, emptyRdrEnv, extendRdrEnv,
addListToRdrEnv, rdrEnvToList, rdrEnvElts
)
-import Name ( Name, OccName, NamedThing(..), getSrcLoc,
- isLocallyDefinedName, nameOccName,
- decode, mkLocalName, mkKnownKeyGlobal,
- NameEnv, lookupNameEnv, emptyNameEnv, unitNameEnv,
- extendNameEnvList
+import Name ( Name, OccName, NamedThing(..),
+ nameOccName,
+ decode, mkLocalName, mkKnownKeyGlobal
)
+import NameEnv ( NameEnv, lookupNameEnv, emptyNameEnv, unitNameEnv, extendNameEnvList )
import Module ( Module, ModuleName, ModuleSet, emptyModuleSet )
import NameSet
import CmdLineOpts ( DynFlags, DynFlag(..), dopt )
import SrcLoc ( SrcLoc, generatedSrcLoc, noSrcLoc )
import Unique ( Unique )
-import FiniteMap ( FiniteMap, emptyFM )
+import FiniteMap ( FiniteMap )
import Bag ( Bag, emptyBag, isEmptyBag, snocBag )
import UniqSupply
import Outputable
import PrelNames ( mkUnboundName )
-import Maybes ( maybeToBool, seqMaybe )
-import ErrUtils ( printErrorsAndWarnings )
infixr 9 `thenRn`, `thenRn_`
\end{code}
ioToRnM io rn_down g_down = (io >>= \ ok -> return (Right ok))
`catch`
(\ err -> return (Left err))
+
+ioToRnM_no_fail :: IO r -> RnM d r
+ioToRnM_no_fail io rn_down g_down
+ = (io >>= \ ok -> return ok)
+ `catch`
+ (\ err -> panic "ioToRnM_no_fail: the I/O operation failed!")
traceRn :: SDoc -> RnM d ()
traceRn msg
= doptRn Opt_D_dump_rn_trace `thenRn` \b ->
if b then putDocRn msg else returnRn ()
+traceHiDiffsRn :: SDoc -> RnM d ()
+traceHiDiffsRn msg
+ = doptRn Opt_D_dump_hi_diffs `thenRn` \b ->
+ if b then putDocRn msg else returnRn ()
+
putDocRn :: SDoc -> RnM d ()
-putDocRn msg = ioToRnM (printErrs msg) `thenRn_`
+putDocRn msg = ioToRnM (printErrs alwaysQualify msg) `thenRn_`
returnRn ()
\end{code}
rn_dflags :: DynFlags,
rn_hit :: HomeIfaceTable,
- rn_done :: Name -> Bool, -- Tells what things (both in the
- -- home package and other packages)
- -- were already available (i.e. in
- -- the relevant SymbolTable) before
- -- compiling this module
-
- rn_errs :: IORef (Bag WarnMsg, Bag ErrMsg),
-
- -- The second and third components are a flattened-out OrigNameEnv
- rn_ns :: IORef (UniqSupply, OrigNameNameEnv, OrigNameIParamEnv),
+ rn_done :: Name -> Maybe TyThing, -- Tells what things (both in the
+ -- home package and other packages)
+ -- were already available (i.e. in
+ -- the relevant SymbolTable) before
+ -- compiling this module
+ -- The Name passed to rn_done is guaranteed to be a Global,
+ -- so it has a Module, so it can be looked up
+
+ rn_errs :: IORef Messages,
+ rn_ns :: IORef NameSupply,
rn_ifaces :: IORef Ifaces
}
data SDown = SDown {
rn_mode :: RnMode,
- rn_genv :: GlobalRdrEnv, -- Global envt
+ rn_genv :: GlobalRdrEnv, -- Top level environment
rn_lenv :: LocalRdrEnv, -- Local name envt
-- Does *not* include global name envt; may shadow it
-- We still need the unsullied global name env so that
-- we can look up record field names
- rn_fixenv :: LocalFixityEnv -- Local fixities
+ rn_fixenv :: LocalFixityEnv -- Local fixities (for non-top-level
+ -- declarations)
-- The global fixities are held in the
- -- rn_ifaces field. Why? See the comments
+ -- HIT or PIT. Why? See the comments
-- with RnIfaces.lookupLocalFixity
}
-data RnMode = SourceMode -- Renaming source code
- | InterfaceMode -- Renaming interface declarations.
+data RnMode = SourceMode -- Renaming source code
+ | InterfaceMode -- Renaming interface declarations.
+ | CmdLineMode -- Renaming a command-line expression
+
+isInterfaceMode InterfaceMode = True
+isInterfaceMode _ = False
\end{code}
%===================================================
\begin{code}
--------------------------------
-type LocalRdrEnv = RdrNameEnv Name
type LocalFixityEnv = NameEnv RenamedFixitySig
-- We keep the whole fixity sig so that we
-- can report line-number info when there is a duplicate
-- fixity declaration
+emptyLocalFixityEnv :: LocalFixityEnv
+emptyLocalFixityEnv = emptyNameEnv
+
lookupLocalFixity :: LocalFixityEnv -> Name -> Fixity
lookupLocalFixity env name
= case lookupNameEnv env name of
-- package symbol table, and the renamer incrementally adds
-- to it.
+ iImpModInfo :: ImportedModuleInfo,
+ -- Modules that we know something about, because they are mentioned
+ -- in interface files, BUT which we have not loaded yet.
+ -- No module is both in here and in the PIT
+
iDecls :: DeclsMap,
-- A single, global map of Names to unslurped decls
-- EPHEMERAL FIELDS
-- These fields persist during the compilation of a single module only
- iImpModInfo :: ImportedModuleInfo,
- -- Modules this one depends on: that is, the union
- -- of the modules its *direct* imports depend on.
- -- NB: The direct imports have .hi files that enumerate *all* the
- -- dependencies (direct or not) of the imported module.
-
iSlurp :: NameSet,
-- All the names (whether "big" or "small", whether wired-in or not,
-- whether locally defined or not) that have been slurped in so far.
-- names that have been slurped in so far, with their versions.
-- This is used to generate the "usage" information for this module.
-- Subset of the previous field.
+ --
-- The module set is the non-home-package modules from which we have
-- slurped at least one name.
-- It's worth keeping separately, because there's no very easy
-- way to distinguish the "big" names from the "non-big" ones.
-- But this is a decision we might want to revisit.
}
-
-type ImportedModuleInfo = FiniteMap ModuleName (WhetherHasOrphans, IsBootInterface)
- -- Contains info ONLY about modules that have not yet
- --- been loaded into the iPIT
\end{code}
%************************************************************************
\begin{code}
+runRn dflags hit hst pcs mod do_rn
+ = do { (pcs, msgs, r) <- initRn dflags hit hst pcs mod do_rn ;
+ printErrorsAndWarnings alwaysQualify msgs ;
+ return (pcs, errorsFound msgs, r)
+ }
+
initRn :: DynFlags
-> HomeIfaceTable -> HomeSymbolTable
-> PersistentCompilerState
-> Module
-> RnMG t
- -> IO (PersistentCompilerState, Bool, t)
- -- True <=> found errors
+ -> IO (PersistentCompilerState, Messages, t)
initRn dflags hit hst pcs mod do_rn
= do
iInsts = prsInsts prs,
iRules = prsRules prs,
- iImpModInfo = emptyFM,
+ iImpModInfo = prsImpMods prs,
iSlurp = unitNameSet (mkUnboundName dummyRdrVarName),
-- Pretend that the dummy unbound name has already been
-- slurped. This is what's returned for an out-of-scope name,
-- and we don't want thereby to try to suck it in!
iVSlurp = (emptyModuleSet, emptyNameSet)
}
- let uniqs = prsNS prs
-
- names_var <- newIORef (uniqs, origNames (prsOrig prs),
- origIParam (prsOrig prs))
+ names_var <- newIORef (prsOrig prs)
errs_var <- newIORef (emptyBag,emptyBag)
iface_var <- newIORef ifaces
let rn_down = RnDown { rn_mod = mod,
rn_dflags = dflags,
rn_hit = hit,
- rn_done = is_done hst pte,
+ rn_done = lookupType hst pte,
rn_ns = names_var,
rn_errs = errs_var,
res <- do_rn rn_down ()
-- Grab state and record it
- (warns, errs) <- readIORef errs_var
- new_ifaces <- readIORef iface_var
- (new_NS, new_origN, new_origIP) <- readIORef names_var
- let new_orig = Orig { origNames = new_origN, origIParam = new_origIP }
- let new_prs = prs { prsOrig = new_orig,
- prsDecls = iDecls new_ifaces,
- prsInsts = iInsts new_ifaces,
- prsRules = iRules new_ifaces,
- prsNS = new_NS }
+ (warns, errs) <- readIORef errs_var
+ new_ifaces <- readIORef iface_var
+ new_orig <- readIORef names_var
+ let new_prs = prs { prsOrig = new_orig,
+ prsImpMods = iImpModInfo new_ifaces,
+ prsDecls = iDecls new_ifaces,
+ prsInsts = iInsts new_ifaces,
+ prsRules = iRules new_ifaces }
let new_pcs = pcs { pcs_PIT = iPIT new_ifaces,
pcs_PRS = new_prs }
- -- Check for warnings
- printErrorsAndWarnings (warns, errs) ;
+ return (new_pcs, (warns, errs), res)
- return (new_pcs, not (isEmptyBag errs), res)
+initRnMS :: GlobalRdrEnv -> LocalRdrEnv -> LocalFixityEnv -> RnMode
+ -> RnMS a -> RnM d a
-is_done :: HomeSymbolTable -> PackageTypeEnv -> Name -> Bool
--- Returns True iff the name is in either symbol table
-is_done hst pte n = maybeToBool (lookupType hst pte n)
-
-initRnMS rn_env fixity_env mode thing_inside rn_down g_down
+initRnMS rn_env local_env fixity_env mode thing_inside rn_down g_down
+ -- The fixity_env appears in both the rn_fixenv field
+ -- and in the HIT. See comments with RnHiFiles.lookupFixityRn
= let
- s_down = SDown { rn_genv = rn_env, rn_lenv = emptyRdrEnv,
+ s_down = SDown { rn_genv = rn_env, rn_lenv = local_env,
rn_fixenv = fixity_env, rn_mode = mode }
in
thing_inside rn_down s_down
initIfaceRnMS :: Module -> RnMS r -> RnM d r
initIfaceRnMS mod thing_inside
- = initRnMS emptyRdrEnv emptyNameEnv InterfaceMode $
+ = initRnMS emptyRdrEnv emptyRdrEnv emptyLocalFixityEnv InterfaceMode $
setModuleRn mod thing_inside
-
\end{code}
-@renameSourceCode@ is used to rename stuff ``out-of-line'';
+@renameDerivedCode@ is used to rename stuff ``out-of-line'';
that is, not as part of the main renamer.
Sole examples: derived definitions,
which are only generated in the type checker.
once you must either split it, or install a fresh unique supply.
\begin{code}
-renameSourceCode :: DynFlags
- -> Module
- -> PersistentRenamerState
- -> RnMS r
- -> r
-
-renameSourceCode dflags mod prs m
- = unsafePerformIO (
+renameDerivedCode :: DynFlags
+ -> Module
+ -> PersistentRenamerState
+ -> RnMS r
+ -> r
+
+renameDerivedCode dflags mod prs thing_inside
+ = unsafePerformIO $
-- It's not really unsafe! When renaming source code we
-- only do any I/O if we need to read in a fixity declaration;
-- and that doesn't happen in pragmas etc
- mkSplitUniqSupply 'r' >>= \ new_us ->
- newIORef (new_us, origNames (prsOrig prs),
- origIParam (prsOrig prs)) >>= \ names_var ->
- newIORef (emptyBag,emptyBag) >>= \ errs_var ->
- let
- rn_down = RnDown { rn_dflags = dflags,
- rn_loc = generatedSrcLoc, rn_ns = names_var,
- rn_errs = errs_var,
- rn_mod = mod,
- rn_done = bogus "rn_done", rn_hit = bogus "rn_hit",
- rn_ifaces = bogus "rn_ifaces"
- }
- s_down = SDown { rn_mode = InterfaceMode,
+ do { us <- mkSplitUniqSupply 'r'
+ ; names_var <- newIORef ((prsOrig prs) { nsUniqs = us })
+ ; errs_var <- newIORef (emptyBag,emptyBag)
+
+ ; let rn_down = RnDown { rn_dflags = dflags,
+ rn_loc = generatedSrcLoc, rn_ns = names_var,
+ rn_errs = errs_var,
+ rn_mod = mod,
+ rn_done = bogus "rn_done",
+ rn_hit = bogus "rn_hit",
+ rn_ifaces = bogus "rn_ifaces"
+ }
+ ; let s_down = SDown { rn_mode = InterfaceMode,
-- So that we can refer to PrelBase.True etc
- rn_genv = emptyRdrEnv, rn_lenv = emptyRdrEnv,
- rn_fixenv = emptyNameEnv }
- in
- m rn_down s_down >>= \ result ->
-
- readIORef errs_var >>= \ (warns,errs) ->
+ rn_genv = emptyRdrEnv, rn_lenv = emptyRdrEnv,
+ rn_fixenv = emptyLocalFixityEnv }
- (if not (isEmptyBag errs) then
- pprTrace "Urk! renameSourceCode found errors" (display errs)
-#ifdef DEBUG
- else if not (isEmptyBag warns) then
- pprTrace "Note: renameSourceCode found warnings" (display warns)
-#endif
- else
- id) $
+ ; result <- thing_inside rn_down s_down
+ ; messages <- readIORef errs_var
+
+ ; if bad messages then
+ do { hPutStr stderr "Urk! renameDerivedCode found errors or warnings"
+ ; printErrorsAndWarnings alwaysQualify messages
+ }
+ else
+ return()
- return result
- )
+ ; return result
+ }
where
- display errs = pprBagOfErrors errs
+#ifdef DEBUG
+ bad messages = errorsFound messages || warningsFound messages
+#else
+ bad messages = errorsFound messages
+#endif
bogus s = panic ("rnameSourceCode: " ++ s) -- Used for unused record fields
mapRn_ :: (a -> RnM d b) -> [a] -> RnM d ()
mapMaybeRn :: (a -> RnM d (Maybe b)) -> [a] -> RnM d [b]
flatMapRn :: (a -> RnM d [b]) -> [a] -> RnM d [b]
-sequenceRn :: [RnM d a] -> RnM d [a]
+sequenceRn :: [RnM d a] -> RnM d [a]
+sequenceRn_ :: [RnM d a] -> RnM d ()
foldlRn :: (b -> a -> RnM d b) -> b -> [a] -> RnM d b
mapAndUnzipRn :: (a -> RnM d (b,c)) -> [a] -> RnM d ([b],[c])
fixRn :: (a -> RnM d a) -> RnM d a
sequenceRn [] = returnRn []
sequenceRn (m:ms) = m `thenRn` \ r ->
- sequenceRn ms `thenRn` \ rs ->
+ sequenceRn ms `thenRn` \ rs ->
returnRn (r:rs)
+sequenceRn_ [] = returnRn ()
+sequenceRn_ (m:ms) = m `thenRn_` sequenceRn_ ms
+
mapRn f [] = returnRn []
mapRn f (x:xs)
= f x `thenRn` \ r ->
getHomeIfaceTableRn :: RnM d HomeIfaceTable
getHomeIfaceTableRn down l_down = return (rn_hit down)
-checkAlreadyAvailable :: Name -> RnM d Bool
-checkAlreadyAvailable name down l_down = return (rn_done down name)
+getTypeEnvRn :: RnM d (Name -> Maybe TyThing)
+getTypeEnvRn down l_down = return (rn_done down)
\end{code}
%================
%=====================
\begin{code}
-getNameSupplyRn :: RnM d (UniqSupply, OrigNameNameEnv, OrigNameIParamEnv)
+getNameSupplyRn :: RnM d NameSupply
getNameSupplyRn rn_down l_down
= readIORef (rn_ns rn_down)
-setNameSupplyRn :: (UniqSupply, OrigNameNameEnv, OrigNameIParamEnv) -> RnM d ()
+setNameSupplyRn :: NameSupply -> RnM d ()
setNameSupplyRn names' (RnDown {rn_ns = names_var}) l_down
= writeIORef names_var names'
getUniqRn :: RnM d Unique
getUniqRn (RnDown {rn_ns = names_var}) l_down
- = readIORef names_var >>= \ (us, cache, ipcache) ->
+ = readIORef names_var >>= \ ns ->
let
- (us1,us') = splitUniqSupply us
+ (us1,us') = splitUniqSupply (nsUniqs ns)
in
- writeIORef names_var (us', cache, ipcache) >>
+ writeIORef names_var (ns {nsUniqs = us'}) >>
return (uniqFromSupply us1)
\end{code}
projects / ghc-hetmet.git / blobdiff