\begin{code}
module Rename (
- renameModule, renameStmt, renameRdrName, mkGlobalContext,
- closeIfaceDecls, checkOldIface
+ renameModule, RnResult(..), renameStmt, renameRdrName, mkGlobalContext,
+ closeIfaceDecls, checkOldIface, slurpIface
) where
#include "HsVersions.h"
instDeclFVs, tyClDeclFVs, ruleDeclFVs
)
-import CmdLineOpts ( DynFlags, DynFlag(..) )
+import CmdLineOpts ( DynFlags, DynFlag(..), opt_InPackage )
import RnMonad
import RnExpr ( rnStmt )
import RnNames ( getGlobalNames, exportsFromAvail )
warnUnusedLocalBinds, warnUnusedModules,
lookupSrcName, getImplicitStmtFVs,
getImplicitModuleFVs, newGlobalName, unQualInScope,
- ubiquitousNames, lookupOccRn,
+ ubiquitousNames, lookupOccRn, checkMain,
plusGlobalRdrEnv, mkGlobalRdrEnv
)
import Module ( Module, ModuleName, WhereFrom(..),
moduleNameUserString, moduleName,
moduleEnvElts
)
-import Name ( Name, nameModule )
+import Name ( Name, nameModule, isExternalName )
import NameEnv
import NameSet
import RdrName ( foldRdrEnv, isQual )
%*********************************************************
\begin{code}
-renameModule :: DynFlags
+renameModule :: DynFlags -> GhciMode
-> HomeIfaceTable -> HomeSymbolTable
-> PersistentCompilerState
-> Module -> RdrNameHsModule
-> IO (PersistentCompilerState, PrintUnqualified,
- Maybe (IsExported, ModIface, [RenamedHsDecl]))
+ Maybe (IsExported, ModIface, RnResult))
-- Nothing => some error occurred in the renamer
-renameModule dflags hit hst pcs this_module rdr_module
+renameModule dflags ghci_mode hit hst pcs this_module rdr_module
= renameSource dflags hit hst pcs this_module $
- rename this_module rdr_module
+ rename ghci_mode this_module rdr_module
\end{code}
\begin{code}
%*********************************************************
%* *
+\subsection{Slurp in a whole module eagerly}
+%* *
+%*********************************************************
+
+\begin{code}
+slurpIface
+ :: DynFlags -> HomeIfaceTable -> HomeSymbolTable
+ -> PersistentCompilerState -> Module
+ -> IO (PersistentCompilerState, PrintUnqualified,
+ Maybe ([Name], [RenamedHsDecl]))
+slurpIface dflags hit hst pcs mod =
+ renameSource dflags hit hst pcs iNTERACTIVE $
+
+ let mod_name = moduleName mod
+ in
+ loadInterface contextDoc mod_name ImportByUser `thenRn` \ iface ->
+ let fvs = availsToNameSet [ avail | (mn,avails) <- mi_exports iface,
+ avail <- avails ]
+ in
+ slurpImpDecls fvs `thenRn` \ rn_imp_decls ->
+ returnRn (alwaysQualify, Just (nameSetToList fvs, rn_imp_decls))
+\end{code}
+
+%*********************************************************
+%* *
\subsection{The main function: rename}
%* *
%*********************************************************
\end{code}
\begin{code}
-rename :: Module -> RdrNameHsModule
- -> RnMG (PrintUnqualified, Maybe (IsExported, ModIface, [RenamedHsDecl]))
-rename this_module contents@(HsModule _ _ exports imports local_decls mod_deprec loc)
+data RnResult -- A RenamedModule ia passed from renamer to typechecker
+ = RnResult { rr_mod :: Module, -- Same as in the ModIface,
+ rr_fixities :: FixityEnv, -- but convenient to have it here
+
+ rr_main :: Maybe Name, -- Just main, for module Main,
+ -- Nothing for other modules
+
+ rr_decls :: [RenamedHsDecl]
+ -- The other declarations of the module
+ -- Fixity and deprecations have already been slurped out
+ } -- and are now in the ModIface for the module
+
+rename :: GhciMode -> Module -> RdrNameHsModule
+ -> RnMG (PrintUnqualified, Maybe (IsExported, ModIface, RnResult))
+rename ghci_mode this_module
+ contents@(HsModule _ _ exports imports local_decls mod_deprec loc)
= pushSrcLocRn loc $
-- FIND THE GLOBAL NAME ENVIRONMENT
rnSourceDecls gbl_env global_avail_env
local_fixity_env local_decls `thenRn` \ (rn_local_decls, source_fvs) ->
+ -- GET ANY IMPLICIT FREE VARIALBES
+ getImplicitModuleFVs rn_local_decls `thenRn` \ implicit_fvs ->
+ checkMain ghci_mode mod_name gbl_env `thenRn` \ (maybe_main_name, main_fvs, implicit_main_fvs) ->
+ let
+ export_fvs = availsToNameSet export_avails
+ used_fvs = source_fvs `plusFV` export_fvs `plusFV` main_fvs
+ -- The export_fvs make the exported names look just as if they
+ -- occurred in the source program. For the reasoning, see the
+ -- comments with RnIfaces.mkImportInfo
+ -- It also helps reportUnusedNames, which of course must not complain
+ -- that 'f' isn't mentioned if it is mentioned in the export list
+
+ needed_fvs = implicit_fvs `plusFV` implicit_main_fvs `plusFV` used_fvs
+ -- 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
+ traceRn (text "Needed FVs:" <+> fsep (map ppr (nameSetToList needed_fvs))) `thenRn_`
+
-- EXIT IF ERRORS FOUND
-- We exit here if there are any errors in the source, *before*
-- we attempt to slurp the decls from the interfaces, otherwise
else
-- SLURP IN ALL THE NEEDED DECLARATIONS
- -- Find out what re-bindable names to use for desugaring
- getImplicitModuleFVs mod_name rn_local_decls `thenRn` \ implicit_fvs ->
- let
- export_fvs = availsToNameSet export_avails
- source_fvs2 = source_fvs `plusFV` export_fvs
- -- The export_fvs make the exported names look just as if they
- -- occurred in the source program. For the reasoning, see the
- -- comments with RnIfaces.mkImportInfo
- -- It also helps reportUnusedNames, which of course must not complain
- -- that 'f' isn't mentioned if it is mentioned in the export list
-
- source_fvs3 = implicit_fvs `plusFV` source_fvs2
- -- 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
- traceRn (text "Source FVs:" <+> fsep (map ppr (nameSetToList source_fvs3))) `thenRn_`
- slurpImpDecls source_fvs3 `thenRn` \ rn_imp_decls ->
+ slurpImpDecls needed_fvs `thenRn` \ rn_imp_decls ->
rnDump rn_imp_decls rn_local_decls `thenRn_`
-- GENERATE THE VERSION/USAGE INFO
final_decls = rn_local_decls ++ rn_imp_decls
+ -- In interactive mode, we don't want to discard any top-level
+ -- entities at all (eg. do not inline them away during
+ -- simplification), and retain them all in the TypeEnv so they are
+ -- available from the command line.
+ --
+ -- isExternalName separates the user-defined top-level names from those
+ -- introduced by the type checker.
+ dont_discard :: Name -> Bool
+ dont_discard | ghci_mode == Interactive = isExternalName
+ | otherwise = (`elemNameSet` exported_names)
+
+ exported_names = availsToNameSet export_avails
+
mod_iface = ModIface { mi_module = this_module,
+ mi_package = opt_InPackage,
mi_version = initialVersionInfo,
mi_usages = my_usages,
mi_boot = False,
mi_decls = panic "mi_decls"
}
- is_exported name = name `elemNameSet` exported_names
- exported_names = availsToNameSet export_avails
+ rn_result = RnResult { rr_mod = this_module,
+ rr_fixities = fixities,
+ rr_decls = final_decls,
+ rr_main = maybe_main_name }
in
-- REPORT UNUSED NAMES, AND DEBUG DUMP
reportUnusedNames mod_iface print_unqualified
imports full_avail_env gbl_env
- source_fvs2 rn_imp_decls `thenRn_`
- -- NB: source_fvs2: include exports (else we get bogus
+ used_fvs rn_imp_decls `thenRn_`
+ -- NB: used_fvs: include exports (else we get bogus
-- warnings of unused things) but not implicit FVs.
- returnRn (print_unqualified, Just (is_exported, mod_iface, final_decls))
+ returnRn (print_unqualified, Just (dont_discard, mod_iface, rn_result))
where
mod_name = moduleName this_module
\end{code}
-> DynFlags
-> HomeIfaceTable -> HomeSymbolTable
-> PersistentCompilerState
+ -> Module
-> FilePath
-> Bool -- Source unchanged
-> Maybe ModIface -- Old interface from compilation manager, if any
-> IO (PersistentCompilerState, Bool, (RecompileRequired, Maybe ModIface))
-- True <=> errors happened
-checkOldIface ghci_mode dflags hit hst pcs iface_path source_unchanged maybe_iface
+checkOldIface ghci_mode dflags hit hst pcs mod iface_path source_unchanged maybe_iface
= runRn dflags hit hst pcs (panic "Bogus module") $
-- CHECK WHETHER THE SOURCE HAS CHANGED
returnRn (outOfDate, maybe_iface)
else
+ setModuleRn mod $
case maybe_iface of
Just old_iface -> -- Use the one we already have
- setModuleRn (mi_module old_iface) (check_versions old_iface)
+ check_versions old_iface
Nothing -- try and read it from a file
-> readIface iface_path `thenRn` \ read_result ->
$$ nest 4 err) `thenRn_`
returnRn (outOfDate, Nothing)
- Right parsed_iface
- -> setModuleRn (pi_mod parsed_iface) $
- loadOldIface parsed_iface `thenRn` \ m_iface ->
+ Right parsed_iface ->
+ let read_mod_name = pi_mod parsed_iface
+ wanted_mod_name = moduleName mod
+ in
+ if (wanted_mod_name /= read_mod_name) then
+ traceHiDiffsRn (
+ text "Existing interface file has wrong module name: "
+ <> quotes (ppr read_mod_name)
+ ) `thenRn_`
+ returnRn (outOfDate, Nothing)
+ else
+ loadOldIface mod parsed_iface `thenRn` \ m_iface ->
check_versions m_iface
where
check_versions :: ModIface -> RnMG (RecompileRequired, Maybe ModIface)
but what?
\begin{code}
-loadOldIface :: ParsedIface -> RnMG ModIface
+loadOldIface :: Module -> ParsedIface -> RnMG ModIface
-loadOldIface parsed_iface
+loadOldIface mod parsed_iface
= let iface = parsed_iface
- mod = pi_mod iface
in
initIfaceRnMS mod (
loadHomeDecls (pi_decls iface) `thenRn` \ decls ->
decls = mkIfaceDecls new_decls new_rules new_insts
- mod_iface = ModIface { mi_module = mod, mi_version = version,
+ mod_iface = ModIface { mi_module = mod, mi_package = pi_pkg parsed_iface,
+ mi_version = version,
mi_exports = avails, mi_usages = usages,
mi_boot = False, mi_orphan = pi_orphan iface,
mi_fixities = fix_env, mi_deprecs = deprec_env,
projects / ghc-hetmet.git / blobdiff