import HscTypes ( ModIface(..) )
import HsSyn
-import RnHsSyn ( RenamedHsDecl )
import RdrHsSyn ( RdrNameIE )
import RdrName ( RdrName, rdrNameModule, rdrNameOcc, isQual, isUnqual, isOrig,
- mkRdrUnqual, mkRdrQual, qualifyRdrName, lookupRdrEnv, foldRdrEnv
+ mkRdrUnqual, mkRdrQual, lookupRdrEnv, foldRdrEnv
)
import HsTypes ( hsTyVarName, replaceTyVarName )
import HscTypes ( Provenance(..), pprNameProvenance, hasBetterProv,
ImportReason(..), GlobalRdrEnv, GlobalRdrElt(..), AvailEnv,
AvailInfo, Avails, GenAvailInfo(..), NameSupply(..),
- Deprecations(..), lookupDeprec
+ Deprecations(..), lookupDeprec,
+ extendLocalRdrEnv
)
import RnMonad
import Name ( Name,
- getSrcLoc,
+ getSrcLoc, nameIsLocalOrFrom,
mkLocalName, mkGlobalName,
mkIPName, nameOccName, nameModule_maybe,
- setNameModuleAndLoc, mkNameEnv
+ setNameModuleAndLoc
)
-import Name ( extendNameEnv_C, plusNameEnv_C, nameEnvElts )
+import NameEnv
import NameSet
import OccName ( OccName, occNameUserString, occNameFlavour )
import Module ( ModuleName, moduleName, mkVanillaModule,
boolTyConName, funTyConName,
unpackCStringName, unpackCStringFoldrName, unpackCStringUtf8Name,
eqStringName, printName,
- hasKey, fractionalClassKey, numClassKey
+ hasKey, fractionalClassKey, numClassKey,
+ bindIOName, returnIOName, failIOName
)
import TysWiredIn ( unitTyCon ) -- A little odd
import FiniteMap
Nothing -> lookupTopBndrRn rdr_name
lookupTopBndrRn rdr_name
+-- Look up a top-level local binder. We may be looking up an unqualified 'f',
+-- and there may be several imported 'f's too, which must not confuse us.
+-- So we have to filter out the non-local ones.
+-- A separate function (importsFromLocalDecls) reports duplicate top level
+-- decls, so here it's safe just to choose an arbitrary one.
= getModeRn `thenRn` \ mode ->
if isInterfaceMode mode
then lookupIfaceName rdr_name
- else -- Source mode, so look up a *qualified* version
- -- of the name, so that we get the right one even
- -- if there are many with the same occ name
- -- There must *be* a binding
- getModuleRn `thenRn` \ mod ->
- getGlobalNameEnv `thenRn` \ global_env ->
- lookupSrcName global_env (qualifyRdrName (moduleName mod) rdr_name)
+ else
+ getModuleRn `thenRn` \ mod ->
+ getGlobalNameEnv `thenRn` \ global_env ->
+ case lookup_local mod global_env rdr_name of
+ Just name -> returnRn name
+ Nothing -> failWithRn (mkUnboundName rdr_name)
+ (unknownNameErr rdr_name)
+ where
+ lookup_local mod global_env rdr_name
+ = case lookupRdrEnv global_env rdr_name of
+ Nothing -> Nothing
+ Just gres -> case [n | GRE n _ _ <- gres, nameIsLocalOrFrom mod n] of
+ [] -> Nothing
+ (n:ns) -> Just n
+
-- lookupSigOccRn is used for type signatures and pragmas
-- Is this valid?
%* *
%*********************************************************
-@addImplicitFVs@ forces the renamer to slurp in some things which aren't
+@getXImplicitFVs@ forces the renamer to slurp in some things which aren't
mentioned explicitly, but which might be needed by the type checker.
\begin{code}
-addImplicitFVs :: GlobalRdrEnv
- -> Maybe (ModuleName, [RenamedHsDecl]) -- Nothing when compling an expression
- -> FreeVars -- Free in the source
- -> RnMG (FreeVars, SyntaxMap) -- Augmented source free vars
-
-addImplicitFVs gbl_env maybe_mod source_fvs
- = -- Find out what re-bindable names to use for desugaring
- rnSyntaxNames gbl_env source_fvs `thenRn` \ (source_fvs1, sugar_map) ->
-
- -- Find implicit FVs thade
- extra_implicits maybe_mod `thenRn` \ extra_fvs ->
-
- let
- implicit_fvs = ubiquitousNames `plusFV` extra_fvs
- slurp_fvs = implicit_fvs `plusFV` source_fvs1
- -- It's important to do the "plus" this way round, so that
- -- when compiling the prelude, locally-defined (), Bool, etc
- -- override the implicit ones.
- in
- returnRn (slurp_fvs, sugar_map)
-
+getImplicitStmtFVs -- Compiling a statement
+ = returnRn (mkFVs [printName, bindIOName, returnIOName, failIOName]
+ `plusFV` ubiquitousNames)
+ -- These are all needed implicitly when compiling a statement
+ -- See TcModule.tc_stmts
+
+getImplicitModuleFVs mod_name decls -- Compiling a module
+ = lookupOrigNames deriv_occs `thenRn` \ deriving_names ->
+ returnRn (deriving_names `plusFV` implicit_main `plusFV` ubiquitousNames)
where
- extra_implicits Nothing -- Compiling an expression
- = returnRn (unitFV printName) -- print :: a -> IO () may be needed later
-
- extra_implicits (Just (mod_name, decls)) -- Compiling a module
- = lookupOrigNames deriv_occs `thenRn` \ deriving_names ->
- returnRn (deriving_names `plusFV` implicit_main)
- where
-- Add occurrences for IO or PrimIO
implicit_main | mod_name == mAIN_Name
|| mod_name == pREL_MAIN_Name = unitFV ioTyConName
bindLocalNames names enclosed_scope
= getLocalNameEnv `thenRn` \ name_env ->
- setLocalNameEnv (addListToRdrEnv name_env pairs)
+ setLocalNameEnv (extendLocalRdrEnv name_env names)
enclosed_scope
- where
- pairs = [(mkRdrUnqual (nameOccName n), n) | n <- names]
bindLocalNamesFV names enclosed_scope
= bindLocalNames names $
\begin{code}
unQualInScope :: GlobalRdrEnv -> Name -> Bool
+-- True if 'f' is in scope, and has only one binding
+-- (i.e. false if A.f and B.f are both in scope as unqualified 'f')
unQualInScope env
= (`elemNameSet` unqual_names)
where
projects / ghc-hetmet.git / blobdiff