\section[Rename]{Renaming and dependency analysis passes}
\begin{code}
-module Rename ( renameModule, renameStmt, closeIfaceDecls, checkOldIface ) where
+module Rename (
+ renameModule, renameStmt, renameRdrName,
+ closeIfaceDecls, checkOldIface
+ ) where
#include "HsVersions.h"
emptyAvailEnv, unitAvailEnv, availEnvElts,
plusAvailEnv, groupAvails, warnUnusedImports,
warnUnusedLocalBinds, warnUnusedModules,
- lookupSrcName, getImplicitStmtFVs, getImplicitModuleFVs,
- newGlobalName, unQualInScope,, ubiquitousNames
+ lookupSrcName, getImplicitStmtFVs,
+ getImplicitModuleFVs, newGlobalName, unQualInScope,
+ ubiquitousNames, lookupOccRn
)
import Module ( Module, ModuleName, WhereFrom(..),
moduleNameUserString, moduleName,
%*********************************************************
%* *
-\subsection{The two main wrappers}
+\subsection{The main wrappers}
%* *
%*********************************************************
rename this_module rdr_module
\end{code}
-
\begin{code}
renameStmt :: DynFlags
-> HomeIfaceTable -> HomeSymbolTable
renameStmt dflags hit hst pcs scope_module this_module local_env stmt
= renameSource dflags hit hst pcs this_module $
- -- Load the interface for the context module, so
- -- that we can get its top-level lexical environment
- -- Bale out if we fail to do this
- loadInterface doc (moduleName scope_module) ImportByUser `thenRn` \ iface ->
- let rdr_env = mi_globals iface
- print_unqual = unQualInScope rdr_env
- in
- checkErrsRn `thenRn` \ no_errs_so_far ->
- if not no_errs_so_far then
- returnRn (print_unqual, Nothing)
- else
+ -- load the context module
+ loadContextModule scope_module $ \ (rdr_env, print_unqual) ->
- -- Rename it
+ -- Rename the stmt
initRnMS rdr_env local_env emptyLocalFixityEnv CmdLineMode (
rnStmt stmt $ \ stmt' ->
returnRn (([], stmt'), emptyFVs)
- ) `thenRn` \ ((binders, stmt), fvs) ->
+ ) `thenRn` \ ((binders, stmt), fvs) ->
-- Bale out if we fail
- checkErrsRn `thenRn` \ no_errs_so_far ->
+ checkErrsRn `thenRn` \ no_errs_so_far ->
if not no_errs_so_far then
- doDump [] stmt [] `thenRn_` returnRn (print_unqual, Nothing)
+ doDump dflags [] stmt [] `thenRn_` returnRn (print_unqual, Nothing)
else
- -- Add implicit free vars, and close 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 ->
+ slurpImplicitDecls fvs local_env `thenRn` \ decls ->
- doDump binders stmt decls `thenRn_`
+ doDump dflags binders stmt decls `thenRn_`
returnRn (print_unqual, Just (binders, (stmt, decls)))
where
- doc = text "context for compiling expression"
-
- doDump :: [Name] -> RenamedStmt -> [RenamedHsDecl] -> RnMG (Either IOError ())
- doDump bndrs stmt decls
- = getDOptsRn `thenRn` \ dflags ->
- ioToRnM (dumpIfSet_dyn dflags Opt_D_dump_rn "Renamer:"
+ doDump :: DynFlags -> [Name] -> RenamedStmt -> [RenamedHsDecl]
+ -> RnMG (Either IOError ())
+ doDump dflags bndrs stmt decls
+ = ioToRnM (dumpIfSet_dyn dflags Opt_D_dump_rn "Renamer:"
(vcat [text "Binders:" <+> ppr bndrs,
ppr stmt, text "",
vcat (map ppr decls)]))
-\end{code}
+renameRdrName
+ :: DynFlags
+ -> HomeIfaceTable -> HomeSymbolTable
+ -> PersistentCompilerState
+ -> Module -- current context (scope to compile in)
+ -> Module -- current module
+ -> LocalRdrEnv -- current context (temp bindings)
+ -> [RdrName] -- name to rename
+ -> IO ( PersistentCompilerState,
+ PrintUnqualified,
+ Maybe ([Name], [RenamedHsDecl])
+ )
+
+renameRdrName dflags hit hst pcs scope_module this_module local_env rdr_names =
+ renameSource dflags hit hst pcs this_module $
+ loadContextModule scope_module $ \ (rdr_env, print_unqual) ->
+
+ -- rename the rdr_name
+ initRnMS rdr_env local_env emptyLocalFixityEnv CmdLineMode
+ (mapRn (tryRn.lookupOccRn) rdr_names) `thenRn` \ maybe_names ->
+ let
+ ok_names = [ a | Right a <- maybe_names ]
+ in
+ if null ok_names
+ then let errs = head [ e | Left e <- maybe_names ]
+ in setErrsRn errs `thenRn_`
+ doDump dflags ok_names [] `thenRn_`
+ returnRn (print_unqual, Nothing)
+ else
+
+ slurpImplicitDecls (mkNameSet ok_names) local_env `thenRn` \ decls ->
+ doDump dflags ok_names decls `thenRn_`
+ returnRn (print_unqual, Just (ok_names, decls))
+ where
+ doDump :: DynFlags -> [Name] -> [RenamedHsDecl] -> RnMG (Either IOError ())
+ doDump dflags names decls
+ = ioToRnM (dumpIfSet_dyn dflags Opt_D_dump_rn "Renamer:"
+ (vcat [ppr names, text "",
+ vcat (map ppr decls)]))
+
+
+-- Load the interface for the context module, so
+-- that we can get its top-level lexical environment
+-- Bale out if we fail to do this
+loadContextModule scope_module thing_inside
+ = let doc = text "context for compiling expression"
+ in
+ loadInterface doc (moduleName scope_module) ImportByUser `thenRn` \ iface ->
+ let rdr_env = mi_globals iface
+ print_unqual = unQualInScope rdr_env
+ in
+ checkErrsRn `thenRn` \ no_errs_so_far ->
+ if not no_errs_so_far then
+ returnRn (print_unqual, Nothing)
+ else
+ thing_inside (rdr_env, print_unqual)
+
+-- Add implicit free vars, and close decls
+slurpImplicitDecls fvs local_env
+ = getImplicitStmtFVs `thenRn` \ implicit_fvs ->
+ let
+ filtered_fvs = fvs `delListFromNameSet` rdrEnvElts local_env
+ source_fvs = implicit_fvs `plusFV` filtered_fvs
+ in
+ slurpImpDecls source_fvs
+\end{code}
+
%*********************************************************
%* *
\subsection{The main function: rename}
projects / ghc-hetmet.git / blobdiff