\begin{code}
module RnMonad(
module RnMonad,
+
+ module RdrName, -- Re-exports
+ module Name, -- from these two
+
Module,
FiniteMap,
Bag,
- Name,
RdrNameHsDecl,
RdrNameInstDecl,
Version,
#include "HsVersions.h"
-#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ >= 405
-import IOExts ( fixIO )
-#elif defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ >= 302
-import PrelIOBase ( fixIO ) -- Should be in GlaExts
-#else
-import IOBase ( fixIO )
-#endif
-import IOExts ( IORef, newIORef, readIORef, writeIORef, unsafePerformIO )
-
import HsSyn
import RdrHsSyn
-import RnHsSyn ( RenamedFixitySig, RenamedDeprecation )
-import BasicTypes ( Version )
-import SrcLoc ( noSrcLoc )
+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,
- pprBagOfErrors, ErrMsg, WarnMsg, Message
+ Message, Messages, errorsFound, warningsFound,
+ printErrorsAndWarnings
)
-import Name ( Name, OccName, NamedThing(..),
- isLocallyDefinedName, nameModule, nameOccName,
- decode, mkLocalName, mkUnboundName
+import RdrName ( RdrName, dummyRdrVarName, rdrNameModule, rdrNameOcc,
+ RdrNameEnv, emptyRdrEnv, extendRdrEnv,
+ addListToRdrEnv, rdrEnvToList, rdrEnvElts
)
-import Module ( Module, ModuleName, ModuleHiMap, SearchPath, WhereFrom,
- mkModuleHiMaps, moduleName, mkVanillaModule, mkSearchPath
+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 RdrName ( RdrName, dummyRdrVarName, rdrNameOcc )
-import CmdLineOpts ( opt_D_dump_rn_trace, opt_HiMap )
-import PrelInfo ( builtinNames )
-import TysWiredIn ( boolTyCon )
-import SrcLoc ( SrcLoc, mkGeneratedSrcLoc )
-import Unique ( Unique, getUnique, unboundKey )
-import UniqFM ( UniqFM )
-import FiniteMap ( FiniteMap, emptyFM, bagToFM, lookupFM, addToFM, addListToFM,
- addListToFM_C, addToFM_C, eltsFM, fmToList
- )
-import Bag ( Bag, mapBag, emptyBag, isEmptyBag, snocBag )
-import Maybes ( mapMaybe )
-import UniqSet
-import UniqFM
+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 Util
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}
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 | opt_D_dump_rn_trace = putDocRn msg
- | otherwise = returnRn ()
+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 msg) `thenRn_`
+putDocRn msg = ioToRnM (printErrs alwaysQualify msg) `thenRn_`
returnRn ()
\end{code}
type RnMG r = RnM () r -- Getting global names etc
-- Common part
-data RnDown = RnDown {
- rn_mod :: ModuleName,
- rn_loc :: SrcLoc,
- rn_ns :: IORef RnNameSupply,
- rn_errs :: IORef (Bag WarnMsg, Bag ErrMsg),
- rn_ifaces :: IORef Ifaces,
- rn_hi_maps :: (SearchPath, -- For error messages
- ModuleHiMap, -- for .hi files
- ModuleHiMap) -- for .hi-boot files
- }
+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,
- -- Global envt; the fixity component gets extended
- -- with local fixity decls
+ 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
-- We still need the unsullied global name env so that
-- we can look up record field names
- rn_fixenv :: FixityEnv -- 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
- -- with RnIfaces.lookupFixity
+ -- HIT or PIT. Why? See the comments
+ -- with RnIfaces.lookupLocalFixity
}
-data RnMode = SourceMode -- Renaming source code
- | InterfaceMode -- Renaming interface declarations.
-\end{code}
+data RnMode = SourceMode -- Renaming source code
+ | InterfaceMode -- Renaming interface declarations.
+ | CmdLineMode -- Renaming a command-line expression
-%===================================================
-\subsubsection{ ENVIRONMENTS}
-%===================================================
+isInterfaceMode InterfaceMode = True
+isInterfaceMode _ = False
+
+isCmdLineMode CmdLineMode = True
+isCmdLineMode _ = False
+\end{code}
\begin{code}
---------------------------------
-type RdrNameEnv a = FiniteMap RdrName a
-type GlobalRdrEnv = RdrNameEnv [Name] -- The list is because there may be name clashes
- -- These only get reported on lookup,
- -- not on construction
-type LocalRdrEnv = RdrNameEnv Name
-
-emptyRdrEnv :: RdrNameEnv a
-lookupRdrEnv :: RdrNameEnv a -> RdrName -> Maybe a
-addListToRdrEnv :: RdrNameEnv a -> [(RdrName,a)] -> RdrNameEnv a
-extendRdrEnv :: RdrNameEnv a -> RdrName -> a -> RdrNameEnv a
-
-emptyRdrEnv = emptyFM
-lookupRdrEnv = lookupFM
-addListToRdrEnv = addListToFM
-rdrEnvElts = eltsFM
-extendRdrEnv = addToFM
-rdrEnvToList = fmToList
-
---------------------------------
-type NameEnv a = UniqFM a -- Domain is Name
-
-emptyNameEnv :: NameEnv a
-nameEnvElts :: NameEnv a -> [a]
-addToNameEnv_C :: (a->a->a) -> NameEnv a -> Name -> a -> NameEnv a
-addToNameEnv :: NameEnv a -> Name -> a -> NameEnv a
-plusNameEnv :: NameEnv a -> NameEnv a -> NameEnv a
-plusNameEnv_C :: (a->a->a) -> NameEnv a -> NameEnv a -> NameEnv a
-extendNameEnv :: NameEnv a -> [(Name,a)] -> NameEnv a
-lookupNameEnv :: NameEnv a -> Name -> Maybe a
-delFromNameEnv :: NameEnv a -> Name -> NameEnv a
-elemNameEnv :: Name -> NameEnv a -> Bool
-unitNameEnv :: Name -> a -> NameEnv a
-
-emptyNameEnv = emptyUFM
-nameEnvElts = eltsUFM
-addToNameEnv_C = addToUFM_C
-addToNameEnv = addToUFM
-plusNameEnv = plusUFM
-plusNameEnv_C = plusUFM_C
-extendNameEnv = addListToUFM
-lookupNameEnv = lookupUFM
-delFromNameEnv = delFromUFM
-elemNameEnv = elemUFM
-unitNameEnv = unitUFM
-
---------------------------------
-type FixityEnv = NameEnv RenamedFixitySig
+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
---------------------------------
-type DeprecationEnv = NameEnv DeprecTxt
+emptyLocalFixityEnv :: LocalFixityEnv
+emptyLocalFixityEnv = emptyNameEnv
\end{code}
-\begin{code}
---------------------------------
-type RnNameSupply
- = ( UniqSupply
-
- , FiniteMap String Int
- -- This is used as a name supply for dictionary functions
- -- From the inst decl we derive a string, usually by glomming together
- -- the class and tycon name -- but it doesn't matter exactly how;
- -- this map then gives a unique int for each inst decl with that
- -- string. (In Haskell 98 there can only be one,
- -- but not so in more extended versions; also class CC type T
- -- and class C type TT might both give the string CCT
- --
- -- We could just use one Int for all the instance decls, but this
- -- way the uniques change less when you add an instance decl,
- -- hence less recompilation
-
- , FiniteMap (ModuleName, OccName) Name
- -- Ensures that one (module,occname) pair gets one unique
- , FiniteMap OccName Name
- -- Ensures that one implicit parameter name gets one unique
- )
-
-
---------------------------------
-data ExportEnv = ExportEnv Avails Fixities [ModuleName]
- -- The list of modules is the modules exported
- -- with 'module M' in the export list
-
-type Avails = [AvailInfo]
-type Fixities = [(Name, Fixity)]
-
-type ExportAvails = (FiniteMap ModuleName Avails,
- -- Used to figure out "module M" export specifiers
- -- Includes avails only from *unqualified* imports
- -- (see 1.4 Report Section 5.1.1)
-
- AvailEnv) -- Used to figure out all other export specifiers.
-
-
-data GenAvailInfo name = Avail name -- An ordinary identifier
- | AvailTC name -- The name of the type or class
- [name] -- The available pieces of type/class.
- -- NB: If the type or class is itself
- -- to be in scope, it must be in this list.
- -- Thus, typically: AvailTC Eq [Eq, ==, /=]
-
-type AvailEnv = NameEnv AvailInfo -- Maps a Name to the AvailInfo that contains it
-type AvailInfo = GenAvailInfo Name
-type RdrAvailInfo = GenAvailInfo OccName
-\end{code}
-%===================================================
-\subsubsection{ INTERFACE FILE STUFF}
-%===================================================
+%************************************************************************
+%* *
+\subsection{Interface file stuff}
+%* *
+%************************************************************************
\begin{code}
-type ExportItem = (ModuleName, [RdrAvailInfo])
-type VersionInfo name = [ImportVersion name]
-
-type ImportVersion name = (ModuleName, Version,
- WhetherHasOrphans, IsBootInterface, WhatsImported name)
-
-type WhetherHasOrphans = Bool
- -- An "orphan" is
- -- * an instance decl in a module other than the defn module for
- -- one of the tycons or classes in the instance head
- -- * a transformation rule in a module other than the one defining
- -- the function in the head of the rule.
-
-type IsBootInterface = Bool
-
-data WhatsImported name = Everything
- | Specifically [LocalVersion name] -- List guaranteed non-empty
-
- -- ("M", hif, ver, Everything) means there was a "module M" in
- -- this module's export list, so we just have to go by M's version, "ver",
- -- not the list of LocalVersions.
-
-
-type LocalVersion name = (name, Version)
+type IfaceDeprecs = Maybe (Either DeprecTxt [(RdrName,DeprecTxt)])
+ -- Nothing => NoDeprecs
+ -- Just (Left t) => DeprecAll
+ -- Just (Right p) => DeprecSome
data ParsedIface
= ParsedIface {
- pi_mod :: Module, -- Complete with package info
+ 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 :: [ExportItem], -- Exports
- pi_decls :: [(Version, RdrNameHsDecl)], -- Local definitions
+ 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 :: [RdrNameRuleDecl], -- Rules
- pi_deprecs :: [RdrNameDeprecation] -- Deprecations
+ pi_rules :: (Version, [RdrNameRuleDecl]), -- Rules, with their version
+ pi_deprecs :: IfaceDeprecs -- Deprecations
}
+\end{code}
-data InterfaceDetails
- = InterfaceDetails WhetherHasOrphans
- (VersionInfo Name) -- Version information for what this module imports
- ExportEnv -- What modules this one depends on
- [Deprecation Name]
-
-
--- needed by Main to fish out the fixities assoc list.
-getIfaceFixities :: InterfaceDetails -> Fixities
-getIfaceFixities (InterfaceDetails _ _ (ExportEnv _ fs _) _) = fs
+%************************************************************************
+%* *
+\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}
-type RdrNamePragma = () -- Fudge for now
--------------------
+%************************************************************************
+%* *
+\subsection{The renamer state}
+%* *
+%************************************************************************
+\begin{code}
data Ifaces = Ifaces {
- 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.
-
- iDecls :: DeclsMap, -- A single, global map of Names to decls
-
- iFixes :: FixityEnv, -- A single, global map of Names to fixities
- -- See comments with RnIfaces.lookupFixity
-
- 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.
-
- iVSlurp :: [(Name,Version)],
- -- All the (a) non-wired-in (b) "big" (c) non-locally-defined
- -- 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.
-
- iInsts :: Bag GatedDecl,
+ -- 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 :: Bag GatedDecl,
- -- Ditto transformation rules
+ iRules :: IfaceRules,
+ -- Similar to instance decls, only for rules
- iDeprecs :: DeprecationEnv
- }
-
-type GatedDecl = (NameSet, (Module, RdrNameHsDecl))
-
-type ImportedModuleInfo
- = FiniteMap ModuleName (Version, WhetherHasOrphans, IsBootInterface,
- Maybe (Module, WhereFrom, Avails))
- -- Suppose the domain element is module 'A'
+ -- 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.
--
- -- The first Bool is True if A contains
- -- 'orphan' rules or instance decls
-
- -- The second Bool is true if the interface file actually
- -- read was an .hi-boot file
-
- -- Nothing => A's interface not yet read, but this module has
- -- imported a module, B, that itself depends on A
+ -- 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.
--
- -- Just xx => A's interface has been read. The Module in
- -- the Just has the correct Dll flag
-
- -- This set is used to decide whether to look for
- -- A.hi or A.hi-boot when importing A.f.
- -- Basically, we look for A.hi if A is in the map, and A.hi-boot
- -- otherwise
-
-type DeclsMap = NameEnv (Version, AvailInfo, Bool, (Module, RdrNameHsDecl))
- -- A DeclsMap contains a binding for each Name in the declaration
- -- including the constructors of a type decl etc.
- -- The Bool is True just for the 'main' Name.
+ -- 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}
%************************************************************************
\begin{code}
-initRn :: ModuleName -> UniqSupply -> SearchPath -> SrcLoc
- -> RnMG r
- -> IO (r, Bag ErrMsg, Bag WarnMsg)
-
-initRn mod us dirs loc do_rn = do
- himaps <- mkModuleHiMaps dirs
- names_var <- newIORef (us, emptyFM, builtins, emptyFM)
- errs_var <- newIORef (emptyBag,emptyBag)
- iface_var <- newIORef emptyIfaces
- let
- rn_down = RnDown { rn_loc = loc, rn_ns = names_var,
- rn_errs = errs_var,
- rn_hi_maps = himaps,
- rn_ifaces = iface_var,
- rn_mod = mod }
+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 errors and return
- (warns, errs) <- readIORef errs_var
-
- return (res, errs, warns)
+ 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 :: GlobalRdrEnv -> FixityEnv -> RnMode -> RnMS r -> RnM d r
-initRnMS rn_env fixity_env mode thing_inside rn_down g_down
+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_lenv = emptyRdrEnv,
- rn_fixenv = fixity_env, rn_mode = mode }
+ 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 emptyNameEnv InterfaceMode $
- setModuleRn (moduleName mod) thing_inside
-
-emptyIfaces :: Ifaces
-emptyIfaces = Ifaces { iImpModInfo = emptyFM,
- iDecls = emptyNameEnv,
- iFixes = emptyNameEnv,
- 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 = [],
- iInsts = emptyBag,
- iRules = emptyBag,
- iDeprecs = emptyNameEnv
- }
-
-builtins :: FiniteMap (ModuleName,OccName) Name
-builtins =
- bagToFM (
- mapBag (\ name -> ((moduleName (nameModule name), nameOccName name), name))
- builtinNames)
+ = initRnMS emptyRdrEnv emptyAvailEnv 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.
-The @RnNameSupply@ includes a @UniqueSupply@, so if you call it more than
+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}
-renameSourceCode :: ModuleName
- -> RnNameSupply
- -> RnMS r
- -> r
-
-renameSourceCode mod_name name_supply 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
- mkModuleHiMaps (mkSearchPath opt_HiMap) >>= \ himaps ->
- newIORef name_supply >>= \ names_var ->
- newIORef (emptyBag,emptyBag) >>= \ errs_var ->
- let
- rn_down = RnDown { rn_loc = mkGeneratedSrcLoc, rn_ns = names_var,
- rn_errs = errs_var, rn_hi_maps = himaps,
- rn_mod = mod_name,
- rn_ifaces = panic "rnameSourceCode: rn_ifaces" -- Not required
- }
- 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_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()
- (if not (isEmptyBag errs) then
- pprTrace "Urk! renameSourceCode found errors" (display errs)
+ ; return result
+ }
+ where
#ifdef DEBUG
- else if not (isEmptyBag warns) then
- pprTrace "Note: renameSourceCode found warnings" (display warns)
+ bad messages = errorsFound messages || warningsFound messages
+#else
+ bad messages = errorsFound messages
#endif
- else
- id) $
- return result
- )
- where
- display errs = pprBagOfErrors errs
+bogus s = panic ("rnameSourceCode: " ++ s) -- Used for unused record fields
{-# INLINE thenRn #-}
{-# INLINE thenRn_ #-}
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 ->
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
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}
+\subsubsection{Source location}
%=====================
\begin{code}
\end{code}
%================
-\subsubsection{ Name supply}
+\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 RnNameSupply
+getNameSupplyRn :: RnM d NameSupply
getNameSupplyRn rn_down l_down
= readIORef (rn_ns rn_down)
-setNameSupplyRn :: RnNameSupply -> RnM d ()
+setNameSupplyRn :: NameSupply -> RnM d ()
setNameSupplyRn names' (RnDown {rn_ns = names_var}) l_down
= writeIORef names_var names'
--- See comments with RnNameSupply above.
-newInstUniq :: String -> RnM d Int
-newInstUniq key (RnDown {rn_ns = names_var}) l_down
- = readIORef names_var >>= \ (us, mapInst, cache, ipcache) ->
- let
- uniq = case lookupFM mapInst key of
- Just x -> x+1
- Nothing -> 0
- mapInst' = addToFM mapInst key uniq
- in
- writeIORef names_var (us, mapInst', cache, ipcache) >>
- return uniq
-
getUniqRn :: RnM d Unique
getUniqRn (RnDown {rn_ns = names_var}) l_down
- = readIORef names_var >>= \ (us, mapInst, cache, ipcache) ->
+ = readIORef names_var >>= \ ns ->
let
- (us1,us') = splitUniqSupply us
+ (us1,us') = splitUniqSupply (nsUniqs ns)
in
- writeIORef names_var (us', mapInst, cache, ipcache) >>
+ writeIORef names_var (ns {nsUniqs = us'}) >>
return (uniqFromSupply us1)
\end{code}
%=====================
\begin{code}
-getModuleRn :: RnM d ModuleName
-getModuleRn (RnDown {rn_mod = mod_name}) l_down
- = return mod_name
+getModuleRn :: RnM d Module
+getModuleRn (RnDown {rn_mod = mod}) l_down
+ = return mod
-setModuleRn :: ModuleName -> RnM d a -> RnM d a
+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}
%=====================
\begin{code}
-getNameEnvs :: RnMS (GlobalRdrEnv, LocalRdrEnv)
-getNameEnvs rn_down (SDown {rn_genv = global_env, rn_lenv = local_env})
- = return (global_env, local_env)
-
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 FixityEnv
+getFixityEnv :: RnMS LocalFixityEnv
getFixityEnv rn_down (SDown {rn_fixenv = fixity_env})
= return fixity_env
-extendFixityEnv :: [(Name, RenamedFixitySig)] -> RnMS a -> RnMS a
-extendFixityEnv fixes enclosed_scope
- rn_down l_down@(SDown {rn_fixenv = fixity_env})
- = let
- new_fixity_env = extendNameEnv fixity_env fixes
- in
- enclosed_scope rn_down (l_down {rn_fixenv = new_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}
%================
setIfacesRn :: Ifaces -> RnM d ()
setIfacesRn ifaces (RnDown {rn_ifaces = iface_var}) _
= writeIORef iface_var ifaces
-
-getHiMaps :: RnM d (SearchPath, ModuleHiMap, ModuleHiMap)
-getHiMaps (RnDown {rn_hi_maps = himaps}) _
- = return himaps
-\end{code}
\end{code}
projects / ghc-hetmet.git / blobdiff