RdrNameStmt
)
import RnHsSyn ( RenamedHsDecl, RenamedTyClDecl, RenamedRuleDecl, RenamedInstDecl,
- extractHsTyNames, RenamedStmt,
+ RenamedStmt,
instDeclFVs, tyClDeclFVs, ruleDeclFVs
)
closeDecls,
RecompileRequired, outOfDate, recompileRequired
)
-import RnHiFiles ( readIface, removeContext, loadInterface,
+import RnHiFiles ( readIface, loadInterface,
loadExports, loadFixDecls, loadDeprecs,
)
-import MkIface ( pprUsage )
import RnEnv ( availsToNameSet, mkIfaceGlobalRdrEnv,
emptyAvailEnv, unitAvailEnv, availEnvElts,
plusAvailEnv, groupAvails, warnUnusedImports,
warnUnusedLocalBinds, warnUnusedModules,
- lookupSrcName, addImplicitFVs,
+ lookupSrcName, getImplicitStmtFVs, getImplicitModuleFVs, rnSyntaxNames,
newGlobalName, unQualInScope,, ubiquitousNames
)
import Module ( Module, ModuleName, WhereFrom(..),
moduleNameUserString, moduleName,
moduleEnvElts
)
-import Name ( Name, nameIsLocalOrFrom, nameModule )
-import Name ( mkNameEnv, nameEnvElts, extendNameEnv )
-import RdrName ( foldRdrEnv, isQual )
+import Name ( Name, nameModule )
+import NameEnv
import NameSet
-import PrelNames ( SyntaxMap, pRELUDE_Name )
+import RdrName ( foldRdrEnv, isQual )
+import PrelNames ( SyntaxMap, vanillaSyntaxMap, pRELUDE_Name )
import ErrUtils ( dumpIfSet, dumpIfSet_dyn, showPass,
printErrorsAndWarnings, errorsFound )
import Bag ( bagToList )
VersionInfo(..), ImportVersion, IsExported,
IfaceDecls, mkIfaceDecls, dcl_tycl, dcl_rules, dcl_insts,
GlobalRdrEnv, GlobalRdrElt(..), pprGlobalRdrEnv,
- AvailEnv, GenAvailInfo(..), AvailInfo, Avails,
+ AvailEnv, GenAvailInfo(..), AvailInfo,
Provenance(..), ImportReason(..), initialVersionInfo,
Deprecations(..),
LocalRdrEnv
doDump [] stmt [] `thenRn_` returnRn (print_unqual, Nothing)
else
- let filtered_fvs = fvs `delListFromNameSet` rdrEnvElts local_env in
-
-- Add implicit free vars, and close decls
- addImplicitFVs rdr_env Nothing filtered_fvs
- `thenRn` \ (slurp_fvs, syntax_map) ->
- slurpImpDecls slurp_fvs `thenRn` \ decls ->
+ getImplicitStmtFVs `thenRn` \ implicit_fvs ->
+ let
+ filtered_fvs = fvs `delListFromNameSet` rdrEnvElts local_env
+ source_fvs = implicit_fvs `plusFV` filtered_fvs
+ in
+ slurpImpDecls source_fvs `thenRn` \ decls ->
doDump binders stmt decls `thenRn_`
- returnRn (print_unqual, Just (binders, (syntax_map, stmt, decls)))
+ returnRn (print_unqual, Just (binders, (vanillaSyntaxMap, stmt, decls)))
where
doc = text "context for compiling expression"
else
-- SLURP IN ALL THE NEEDED DECLARATIONS
- addImplicitFVs gbl_env (Just (mod_name, rn_local_decls))
- source_fvs `thenRn` \ (slurp_fvs, sugar_map) ->
- traceRn (text "Source FVs:" <+> fsep (map ppr (nameSetToList slurp_fvs))) `thenRn_`
- slurpImpDecls slurp_fvs `thenRn` \ rn_imp_decls ->
+ -- Find out what re-bindable names to use for desugaring
+ getImplicitModuleFVs mod_name rn_local_decls `thenRn` \ implicit_fvs ->
+ rnSyntaxNames gbl_env source_fvs `thenRn` \ (source_fvs1, sugar_map) ->
+ let
+ export_fvs = availsToNameSet export_avails
+ source_fvs2 = source_fvs1 `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 ->
rnDump rn_imp_decls rn_local_decls `thenRn_`
-- GENERATE THE VERSION/USAGE INFO
- mkImportInfo mod_name imports `thenRn` \ my_usages ->
+ mkImportInfo mod_name imports `thenRn` \ my_usages ->
-- BUILD THE MODULE INTERFACE
let
my_exports = groupAvails this_module export_avails
final_decls = rn_local_decls ++ rn_imp_decls
- is_orphan = any (isOrphanDecl this_module) rn_local_decls
mod_iface = ModIface { mi_module = this_module,
mi_version = initialVersionInfo,
mi_usages = my_usages,
mi_boot = False,
- mi_orphan = is_orphan,
+ mi_orphan = panic "is_orphan",
mi_exports = my_exports,
mi_globals = gbl_env,
mi_fixities = fixities,
-- REPORT UNUSED NAMES, AND DEBUG DUMP
reportUnusedNames mod_iface print_unqualified
imports global_avail_env
- source_fvs export_avails rn_imp_decls `thenRn_`
+ source_fvs2 rn_imp_decls `thenRn_`
+ -- NB: source_fvs2: include exports (else we get bogus
+ -- warnings of unused things) but not implicit FVs.
returnRn (print_unqualified, Just (is_exported, mod_iface, (sugar_map, final_decls)))
where
mod_name = moduleName this_module
\end{code}
-\begin{code}
-isOrphanDecl this_mod (InstD (InstDecl inst_ty _ _ _ _))
- = not (foldNameSet ((||) . nameIsLocalOrFrom this_mod) False
- (extractHsTyNames (removeContext inst_ty)))
- -- The 'removeContext' is because of
- -- instance Foo a => Baz T where ...
- -- The decl is an orphan if Baz and T are both not locally defined,
- -- even if Foo *is* locally defined
-
-isOrphanDecl this_mod (RuleD (HsRule _ _ _ lhs _ _))
- = check lhs
- where
- -- At the moment we just check for common LHS forms
- -- Expand as necessary. Getting it wrong just means
- -- more orphans than necessary
- check (HsVar v) = not (nameIsLocalOrFrom this_mod v)
- check (HsApp f a) = check f && check a
- check (HsLit _) = False
- check (HsOverLit _) = False
- check (OpApp l o _ r) = check l && check o && check r
- check (NegApp e) = check e
- check (HsPar e) = check e
- check (SectionL e o) = check e && check o
- check (SectionR o e) = check e && check o
-
- check other = True -- Safe fall through
-
-isOrphanDecl _ _ = False
-\end{code}
%*********************************************************
-> [RdrNameImportDecl]
-> AvailEnv
-> NameSet -- Used in this module
- -> Avails -- Exported by this module
-> [RenamedHsDecl]
-> RnMG ()
reportUnusedNames my_mod_iface unqual imports avail_env
- source_fvs export_avails imported_decls
+ used_names imported_decls
= warnUnusedModules unused_imp_mods `thenRn_`
warnUnusedLocalBinds bad_locals `thenRn_`
warnUnusedImports bad_imp_names `thenRn_`
this_mod = mi_module my_mod_iface
gbl_env = mi_globals my_mod_iface
- -- The export_fvs make the exported names look just as if they
- -- occurred in the source program.
- export_fvs = availsToNameSet export_avails
- used_names = source_fvs `plusFV` export_fvs
-
-- Now, a use of C implies a use of T,
-- if C was brought into scope by T(..) or T(C)
really_used_names = used_names `unionNameSets`
projects / ghc-hetmet.git / blobdiff