+++ /dev/null
-%
-% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
-%
-\section[RnMonad]{The monad used by the renamer}
-
-\begin{code}
-module RnMonad(
- module RnMonad,
-
- module RdrName, -- Re-exports
- module Name, -- from these two
-
- Module,
- FiniteMap,
- Bag,
- RdrNameHsDecl,
- RdrNameInstDecl,
- Version,
- NameSet,
- OccName,
- Fixity
- ) where
-
-#include "HsVersions.h"
-
-import HsSyn
-import RdrHsSyn
-import RnHsSyn ( RenamedFixitySig )
-import HscTypes ( AvailEnv, emptyAvailEnv, lookupType,
- NameSupply(..),
- ImportedModuleInfo, WhetherHasOrphans, ImportVersion,
- PersistentRenamerState(..), RdrExportItem,
- DeclsMap, IfaceInsts, IfaceRules,
- HomeSymbolTable, TyThing,
- PersistentCompilerState(..), GlobalRdrEnv,
- LocalRdrEnv,
- HomeIfaceTable, PackageIfaceTable )
-import BasicTypes ( Version, defaultFixity,
- Fixity(..), FixityDirection(..) )
-import ErrUtils ( addShortErrLocLine, addShortWarnLocLine,
- Message, Messages, errorsFound, warningsFound,
- printErrorsAndWarnings
- )
-import RdrName ( RdrName, dummyRdrVarName, rdrNameModule, rdrNameOcc,
- RdrNameEnv, emptyRdrEnv, extendRdrEnv,
- addListToRdrEnv, rdrEnvToList, rdrEnvElts
- )
-import Id ( idName )
-import MkId ( seqId )
-import Name ( Name, OccName, NamedThing(..),
- nameOccName, nameRdrName,
- decode, mkInternalName
- )
-import NameEnv ( NameEnv, lookupNameEnv, emptyNameEnv,
- extendNameEnvList )
-import Module ( Module, ModuleName, ModuleSet, emptyModuleSet,
- PackageName, preludePackage )
-import PrelInfo ( ghcPrimExports,
- cCallableClassDecl, cReturnableClassDecl, assertDecl )
-import PrelNames ( mkUnboundName, gHC_PRIM_Name )
-import NameSet
-import CmdLineOpts ( DynFlags, DynFlag(..), dopt )
-import SrcLoc ( SrcLoc, generatedSrcLoc, noSrcLoc )
-import Unique ( Unique )
-import FiniteMap ( FiniteMap )
-import Maybes ( seqMaybe )
-import Bag ( Bag, emptyBag, isEmptyBag, snocBag )
-import UniqSupply
-import Outputable
-
-import DATA_IOREF ( IORef, newIORef, readIORef, writeIORef )
-import UNSAFE_IO ( unsafePerformIO )
-import FIX_IO ( fixIO )
-
-import IO ( hPutStr, stderr )
-
-infixr 9 `thenRn`, `thenRn_`
-\end{code}
-
-
-%************************************************************************
-%* *
-\subsection{Somewhat magical interface to other monads}
-%* *
-%************************************************************************
-
-\begin{code}
-ioToRnM :: IO r -> RnM d (Either IOError r)
-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 = ifOptRn Opt_D_dump_rn_trace (putDocRn msg)
-
-traceHiDiffsRn :: SDoc -> RnM d ()
-traceHiDiffsRn msg = ifOptRn Opt_D_dump_hi_diffs (putDocRn msg)
-
-putDocRn :: SDoc -> RnM d ()
-putDocRn msg = ioToRnM (printErrs alwaysQualify msg) `thenRn_`
- returnRn ()
-\end{code}
-
-
-%************************************************************************
-%* *
-\subsection{Data types}
-%* *
-%************************************************************************
-
-%===================================================
-\subsubsection{ MONAD TYPES}
-%===================================================
-
-\begin{code}
-type RnM d r = RnDown -> d -> IO r
-type RnMS r = RnM SDown r -- Renaming source
-type RnMG r = RnM () r -- Getting global names etc
-
- -- Common part
-data RnDown
- = RnDown {
- rn_mod :: Module, -- This module
- rn_loc :: SrcLoc, -- Current locn
-
- rn_dflags :: DynFlags,
-
- rn_hit :: HomeIfaceTable,
- 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
- }
-
- -- For renaming source code
-data SDown = SDown {
- rn_mode :: RnMode,
-
- rn_genv :: GlobalRdrEnv, -- Top level environment
-
- rn_avails :: AvailEnv,
- -- Top level AvailEnv; contains all the things that
- -- are nameable in the top-level scope, regardless of
- -- *how* they can be named (qualified, unqualified...)
- -- It is used only to map a Class to its class ops, and
- -- hence to resolve the binders in an instance decl
-
- rn_lenv :: LocalRdrEnv, -- Local name envt
- -- Does *not* include global name envt; may shadow it
- -- Includes both ordinary variables and type variables;
- -- they are kept distinct because tyvar have a different
- -- occurrence contructor (Name.TvOcc)
- -- We still need the unsullied global name env so that
- -- we can look up record field names
-
- rn_fixenv :: LocalFixityEnv -- Local fixities (for non-top-level
- -- declarations)
- -- The global fixities are held in the
- -- HIT or PIT. Why? See the comments
- -- with RnIfaces.lookupLocalFixity
- }
-
-data RnMode = SourceMode -- Renaming source code
- | InterfaceMode -- Renaming interface declarations.
- | CmdLineMode -- Renaming a command-line expression
-
-isInterfaceMode InterfaceMode = True
-isInterfaceMode _ = False
-
-isCmdLineMode CmdLineMode = True
-isCmdLineMode _ = False
-\end{code}
-
-\begin{code}
-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
-\end{code}
-
-
-%************************************************************************
-%* *
-\subsection{Interface file stuff}
-%* *
-%************************************************************************
-
-\begin{code}
-type IfaceDeprecs = Maybe (Either DeprecTxt [(RdrName,DeprecTxt)])
- -- Nothing => NoDeprecs
- -- Just (Left t) => DeprecAll
- -- Just (Right p) => DeprecSome
-
-data ParsedIface
- = ParsedIface {
- pi_mod :: ModuleName,
- pi_pkg :: PackageName,
- pi_vers :: Version, -- Module version number
- pi_orphan :: WhetherHasOrphans, -- Whether this module has orphans
- pi_usages :: [ImportVersion OccName], -- Usages
- pi_exports :: (Version, [RdrExportItem]), -- Exports
- pi_decls :: [(Version, RdrNameTyClDecl)], -- Local definitions
- pi_fixity :: [(RdrName,Fixity)], -- Local fixity declarations,
- pi_insts :: [RdrNameInstDecl], -- Local instance declarations
- pi_rules :: (Version, [RdrNameRuleDecl]), -- Rules, with their version
- pi_deprecs :: IfaceDeprecs -- Deprecations
- }
-\end{code}
-
-%************************************************************************
-%* *
-\subsection{Wired-in interfaces}
-%* *
-%************************************************************************
-
-\begin{code}
-ghcPrimIface :: ParsedIface
-ghcPrimIface = ParsedIface {
- pi_mod = gHC_PRIM_Name,
- pi_pkg = preludePackage,
- pi_vers = 1,
- pi_orphan = False,
- pi_usages = [],
- pi_exports = (1, [(gHC_PRIM_Name, ghcPrimExports)]),
- pi_decls = [(1,cCallableClassDecl),
- (1,cReturnableClassDecl),
- (1,assertDecl)],
- pi_fixity = [(nameRdrName (idName seqId), Fixity 0 InfixR)],
- -- seq is infixr 0
- pi_insts = [],
- pi_rules = (1,[]),
- pi_deprecs = Nothing
- }
-\end{code}
-
-%************************************************************************
-%* *
-\subsection{The renamer state}
-%* *
-%************************************************************************
-
-\begin{code}
-data Ifaces = Ifaces {
- -- PERSISTENT FIELDS
- iPIT :: PackageIfaceTable,
- -- The ModuleIFaces for modules in other packages
- -- whose interfaces we have opened
- -- The declarations in these interface files are held in
- -- iDecls, iInsts, iRules (below), not in the mi_decls fields
- -- of the iPIT. What _is_ in the iPIT is:
- -- * The Module
- -- * Version info
- -- * Its exports
- -- * Fixities
- -- * Deprecations
- -- The iPIT field is initialised from the compiler's persistent
- -- 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
-
- iInsts :: IfaceInsts,
- -- The as-yet un-slurped instance decls; this bag is depleted when we
- -- slurp an instance decl so that we don't slurp the same one twice.
- -- Each is 'gated' by the names that must be available before
- -- this instance decl is needed.
-
- iRules :: IfaceRules,
- -- Similar to instance decls, only for rules
-
- -- EPHEMERAL FIELDS
- -- These fields persist during the compilation of a single module only
- 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.
- --
- -- It's used for two things:
- -- a) To record what we've already slurped, so
- -- we can no-op if we try to slurp it again
- -- b) As the 'gates' for importing rules. We import a rule
- -- if all its LHS free vars have been slurped
-
- iVSlurp :: (ModuleSet, NameSet)
- -- The Names are all the (a) non-wired-in
- -- (b) "big"
- -- (c) non-locally-defined
- -- (d) home-package
- -- 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.
- }
-\end{code}
-
-
-%************************************************************************
-%* *
-\subsection{Main monad 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, Messages, t)
-
-initRn dflags hit hst pcs mod do_rn
- = do
- let prs = pcs_PRS pcs
- let pte = pcs_PTE pcs
- let ifaces = Ifaces { iPIT = pcs_PIT pcs,
- iDecls = prsDecls prs,
- iInsts = prsInsts prs,
- iRules = prsRules prs,
-
- 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)
- }
- names_var <- newIORef (prsOrig prs)
- errs_var <- newIORef (emptyBag,emptyBag)
- iface_var <- newIORef ifaces
- let rn_down = RnDown { rn_mod = mod,
- rn_loc = noSrcLoc,
-
- rn_dflags = dflags,
- rn_hit = hit,
- rn_done = lookupType hst pte,
-
- rn_ns = names_var,
- rn_errs = errs_var,
- rn_ifaces = iface_var,
- }
-
- -- do the business
- res <- do_rn rn_down ()
-
- -- Grab state and record it
- (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 }
-
- return (new_pcs, (warns, errs), res)
-
-initRnMS :: GlobalRdrEnv -> AvailEnv -> LocalRdrEnv -> LocalFixityEnv -> RnMode
- -> RnMS a -> RnM d a
-
-initRnMS rn_env avails 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_avails = avails,
- 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 emptyAvailEnv emptyRdrEnv
- emptyLocalFixityEnv InterfaceMode
- (setModuleRn mod thing_inside)
-\end{code}
-
-@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.
-
-The @NameSupply@ includes a @UniqueSupply@, so if you call it more than
-once you must either split it, or install a fresh unique supply.
-
-\begin{code}
-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
-
- 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_avails = emptyAvailEnv,
- rn_genv = emptyRdrEnv, rn_lenv = emptyRdrEnv,
- rn_fixenv = emptyLocalFixityEnv }
-
- ; 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
- }
- where
-#ifdef DEBUG
- bad messages = errorsFound messages || warningsFound messages
-#else
- bad messages = errorsFound messages
-#endif
-
-bogus s = panic ("rnameSourceCode: " ++ s) -- Used for unused record fields
-
-{-# INLINE thenRn #-}
-{-# INLINE thenRn_ #-}
-{-# INLINE returnRn #-}
-{-# INLINE andRn #-}
-
-returnRn :: a -> RnM d a
-thenRn :: RnM d a -> (a -> RnM d b) -> RnM d b
-thenRn_ :: RnM d a -> RnM d b -> RnM d b
-andRn :: (a -> a -> a) -> RnM d a -> RnM d a -> RnM d a
-mapRn :: (a -> RnM d b) -> [a] -> RnM d [b]
-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 ()
-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
-
-returnRn v gdown ldown = return v
-thenRn m k gdown ldown = m gdown ldown >>= \ r -> k r gdown ldown
-thenRn_ m k gdown ldown = m gdown ldown >> k gdown ldown
-fixRn m gdown ldown = fixIO (\r -> m r gdown ldown)
-andRn combiner m1 m2 gdown ldown
- = m1 gdown ldown >>= \ res1 ->
- m2 gdown ldown >>= \ res2 ->
- return (combiner res1 res2)
-
-sequenceRn [] = returnRn []
-sequenceRn (m:ms) = m `thenRn` \ r ->
- 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 ->
- mapRn f xs `thenRn` \ rs ->
- returnRn (r:rs)
-
-mapRn_ f [] = returnRn ()
-mapRn_ f (x:xs) =
- f x `thenRn_`
- mapRn_ f xs
-
-foldlRn k z [] = returnRn z
-foldlRn k z (x:xs) = k z x `thenRn` \ z' ->
- foldlRn k z' xs
-
-mapAndUnzipRn f [] = returnRn ([],[])
-mapAndUnzipRn f (x:xs)
- = f x `thenRn` \ (r1, r2) ->
- mapAndUnzipRn f xs `thenRn` \ (rs1, rs2) ->
- returnRn (r1:rs1, r2:rs2)
-
-mapAndUnzip3Rn f [] = returnRn ([],[],[])
-mapAndUnzip3Rn f (x:xs)
- = f x `thenRn` \ (r1, r2, r3) ->
- mapAndUnzip3Rn f xs `thenRn` \ (rs1, rs2, rs3) ->
- returnRn (r1:rs1, r2:rs2, r3:rs3)
-
-mapMaybeRn f [] = returnRn []
-mapMaybeRn f (x:xs) = f x `thenRn` \ maybe_r ->
- mapMaybeRn f xs `thenRn` \ rs ->
- case maybe_r of
- Nothing -> returnRn rs
- Just r -> returnRn (r:rs)
-
-flatMapRn f [] = returnRn []
-flatMapRn f (x:xs) = f x `thenRn` \ r ->
- flatMapRn f xs `thenRn` \ rs ->
- returnRn (r ++ rs)
-\end{code}
-
-
-
-%************************************************************************
-%* *
-\subsection{Boring plumbing for common part}
-%* *
-%************************************************************************
-
-
-%================
-\subsubsection{ Errors and warnings}
-%=====================
-
-\begin{code}
-failWithRn :: a -> Message -> RnM d a
-failWithRn res msg (RnDown {rn_errs = errs_var, rn_loc = loc}) l_down
- = readIORef errs_var >>= \ (warns,errs) ->
- writeIORef errs_var (warns, errs `snocBag` err) >>
- return res
- where
- err = addShortErrLocLine loc msg
-
-warnWithRn :: a -> Message -> RnM d a
-warnWithRn res msg (RnDown {rn_errs = errs_var, rn_loc = loc}) l_down
- = readIORef errs_var >>= \ (warns,errs) ->
- writeIORef errs_var (warns `snocBag` warn, errs) >>
- return res
- where
- warn = addShortWarnLocLine loc msg
-
-tryRn :: RnM d a -> RnM d (Either Messages a)
-tryRn try_this down@(RnDown {rn_errs = errs_var}) l_down
- = do current_msgs <- readIORef errs_var
- writeIORef errs_var (emptyBag,emptyBag)
- a <- try_this down l_down
- (warns, errs) <- readIORef errs_var
- writeIORef errs_var current_msgs
- if (isEmptyBag errs)
- then return (Right a)
- else return (Left (warns,errs))
-
-setErrsRn :: Messages -> RnM d ()
-setErrsRn msgs down@(RnDown {rn_errs = errs_var}) l_down
- = do writeIORef errs_var msgs; return ()
-
-addErrRn :: Message -> RnM d ()
-addErrRn err = failWithRn () err
-
-checkRn :: Bool -> Message -> RnM d () -- Check that a condition is true
-checkRn False err = addErrRn err
-checkRn True err = returnRn ()
-
-warnCheckRn :: Bool -> Message -> RnM d () -- Check that a condition is true
-warnCheckRn False err = addWarnRn err
-warnCheckRn True err = returnRn ()
-
-addWarnRn :: Message -> RnM d ()
-addWarnRn warn = warnWithRn () warn
-
-checkErrsRn :: RnM d Bool -- True <=> no errors so far
-checkErrsRn (RnDown {rn_errs = errs_var}) l_down
- = readIORef errs_var >>= \ (warns,errs) ->
- return (isEmptyBag errs)
-
-doptRn :: DynFlag -> RnM d Bool
-doptRn dflag (RnDown { rn_dflags = dflags}) l_down
- = return (dopt dflag dflags)
-
-ifOptRn :: DynFlag -> RnM d a -> RnM d ()
-ifOptRn dflag thing_inside down@(RnDown { rn_dflags = dflags}) l_down
- | dopt dflag dflags = thing_inside down l_down >> return ()
- | otherwise = return ()
-
-getDOptsRn :: RnM d DynFlags
-getDOptsRn (RnDown { rn_dflags = dflags}) l_down
- = return dflags
-\end{code}
-
-
-%================
-\subsubsection{Source location}
-%=====================
-
-\begin{code}
-pushSrcLocRn :: SrcLoc -> RnM d a -> RnM d a
-pushSrcLocRn loc' m down l_down
- = m (down {rn_loc = loc'}) l_down
-
-getSrcLocRn :: RnM d SrcLoc
-getSrcLocRn down l_down
- = return (rn_loc down)
-\end{code}
-
-%================
-\subsubsection{The finder and home symbol table}
-%=====================
-
-\begin{code}
-getHomeIfaceTableRn :: RnM d HomeIfaceTable
-getHomeIfaceTableRn down l_down = return (rn_hit down)
-
-getTypeEnvRn :: RnM d (Name -> Maybe TyThing)
-getTypeEnvRn down l_down = return (rn_done down)
-
-extendTypeEnvRn :: NameEnv TyThing -> RnM d a -> RnM d a
-extendTypeEnvRn env inside down l_down
- = inside down{rn_done=new_rn_done} l_down
- where new_rn_done = \nm -> lookupNameEnv env nm `seqMaybe` rn_done down nm
-\end{code}
-
-%================
-\subsubsection{Name supply}
-%=====================
-
-\begin{code}
-getNameSupplyRn :: RnM d NameSupply
-getNameSupplyRn rn_down l_down
- = readIORef (rn_ns rn_down)
-
-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 >>= \ ns ->
- let
- (us1,us') = splitUniqSupply (nsUniqs ns)
- in
- writeIORef names_var (ns {nsUniqs = us'}) >>
- return (uniqFromSupply us1)
-\end{code}
-
-%================
-\subsubsection{ Module}
-%=====================
-
-\begin{code}
-getModuleRn :: RnM d Module
-getModuleRn (RnDown {rn_mod = mod}) l_down
- = return mod
-
-setModuleRn :: Module -> RnM d a -> RnM d a
-setModuleRn new_mod enclosed_thing rn_down l_down
- = enclosed_thing (rn_down {rn_mod = new_mod}) l_down
-\end{code}
-
-
-%************************************************************************
-%* *
-\subsection{Plumbing for rename-source part}
-%* *
-%************************************************************************
-
-%================
-\subsubsection{ RnEnv}
-%=====================
-
-\begin{code}
-getLocalNameEnv :: RnMS LocalRdrEnv
-getLocalNameEnv rn_down (SDown {rn_lenv = local_env})
- = return local_env
-
-getGlobalNameEnv :: RnMS GlobalRdrEnv
-getGlobalNameEnv rn_down (SDown {rn_genv = global_env})
- = return global_env
-
-getGlobalAvails :: RnMS AvailEnv
-getGlobalAvails rn_down (SDown {rn_avails = avails})
- = return avails
-
-setLocalNameEnv :: LocalRdrEnv -> RnMS a -> RnMS a
-setLocalNameEnv local_env' m rn_down l_down
- = m rn_down (l_down {rn_lenv = local_env'})
-
-getFixityEnv :: RnMS LocalFixityEnv
-getFixityEnv rn_down (SDown {rn_fixenv = fixity_env})
- = return fixity_env
-
-setFixityEnv :: LocalFixityEnv -> RnMS a -> RnMS a
-setFixityEnv fixes enclosed_scope rn_down l_down
- = enclosed_scope rn_down (l_down {rn_fixenv = fixes})
-\end{code}
-
-%================
-\subsubsection{ Mode}
-%=====================
-
-\begin{code}
-getModeRn :: RnMS RnMode
-getModeRn rn_down (SDown {rn_mode = mode})
- = return mode
-
-setModeRn :: RnMode -> RnMS a -> RnMS a
-setModeRn new_mode thing_inside rn_down l_down
- = thing_inside rn_down (l_down {rn_mode = new_mode})
-\end{code}
-
-
-%************************************************************************
-%* *
-\subsection{Plumbing for rename-globals part}
-%* *
-%************************************************************************
-
-\begin{code}
-getIfacesRn :: RnM d Ifaces
-getIfacesRn (RnDown {rn_ifaces = iface_var}) _
- = readIORef iface_var
-
-setIfacesRn :: Ifaces -> RnM d ()
-setIfacesRn ifaces (RnDown {rn_ifaces = iface_var}) _
- = writeIORef iface_var ifaces
-\end{code}
projects / ghc-hetmet.git / blobdiff