{-# OPTIONS -#include "Linker.h" -#include "SchedAPI.h" #-}
-----------------------------------------------------------------------------
--- $Id: InteractiveUI.hs,v 1.106 2002/01/09 12:41:47 simonmar Exp $
+-- $Id: InteractiveUI.hs,v 1.113 2002/02/12 15:17:15 simonmar Exp $
--
-- GHC Interactive User Interface
--
#include "HsVersions.h"
import Packages
+
import CompManager
-import HscTypes ( TyThing(..) )
-import MkIface
-import ByteCodeLink
+import CmTypes ( Linkable, isObjectLinkable, ModSummary(..) )
+import CmLink ( findModuleLinkable_maybe )
+
+import HscTypes ( TyThing(..), showModMsg, InteractiveContext(..) )
+import HsSyn ( TyClDecl(..), ConDecl(..), Sig(..) )
+import MkIface ( ifaceTyThing )
import DriverFlags
import DriverState
-import DriverUtil
+import DriverUtil ( handle, remove_spaces )
import Linker
import Finder ( flushPackageCache )
import Util
import Id ( isRecordSelector, recordSelectorFieldLabel,
- isDataConWrapId, idName )
+ isDataConWrapId, isDataConId, idName )
import Class ( className )
import TyCon ( tyConName, tyConClass_maybe, isPrimTyCon )
import FieldLabel ( fieldLabelTyCon )
import SrcLoc ( isGoodSrcLoc )
+import Module ( moduleName )
+import NameEnv ( nameEnvElts )
import Name ( Name, isHomePackageName, nameSrcLoc, nameOccName,
NamedThing(..) )
import OccName ( isSymOcc )
import BasicTypes ( defaultFixity )
import Outputable
-import CmdLineOpts ( DynFlag(..), getDynFlags, saveDynFlags, restoreDynFlags, dopt_unset )
+import CmdLineOpts ( DynFlag(..), DynFlags(..), getDynFlags, saveDynFlags,
+ restoreDynFlags, dopt_unset )
import Panic ( GhcException(..), showGhcException )
import Config
import Directory
import IO
import Char
-import Monad ( when, join )
+import Monad
+
+import GlaExts ( unsafeCoerce# )
-import PrelGHC ( unsafeCoerce# )
import Foreign ( nullPtr )
import CString ( peekCString )
builtin_commands :: [(String, String -> GHCi Bool)]
builtin_commands = [
("add", keepGoing addModule),
+ ("browse", keepGoing browseCmd),
("cd", keepGoing changeDirectory),
("def", keepGoing defineMacro),
("help", keepGoing help),
("?", keepGoing help),
("info", keepGoing info),
- ("import", keepGoing importModules),
("load", keepGoing loadModule),
("module", keepGoing setContext),
("reload", keepGoing reloadModule),
("set", keepGoing setCmd),
+ ("show", keepGoing showCmd),
("type", keepGoing typeOfExpr),
("unset", keepGoing unsetOptions),
("undef", keepGoing undefineMacro),
\\
\ <stmt> evaluate/run <stmt>\n\
\ :add <filename> ... add module(s) to the current target set\n\
+\ :browse [*]<module> display the names defined by <module>\n\
\ :cd <dir> change directory to <dir>\n\
\ :def <cmd> <expr> define a command :<cmd>\n\
\ :help, :? display this list of commands\n\
\ :load <filename> ... load module(s) and their dependents\n\
\ :module <mod> set the context for expression evaluation to <mod>\n\
\ :reload reload the current module set\n\
+\\n\
\ :set <option> ... set options\n\
\ :set args <arg> ... set the arguments returned by System.getArgs\n\
\ :set prog <progname> set the value returned by System.getProgName\n\
-\ :undef <cmd> undefine user-defined command :<cmd>\n\
+\\n\
+\ :show modules show the currently loaded modules\n\
+\ :show bindings show the current bindings made at the prompt\n\
+\\n\
\ :type <expr> show the type of <expr>\n\
+\ :undef <cmd> undefine user-defined command :<cmd>\n\
\ :unset <option> ... unset options\n\
\ :quit exit GHCi\n\
\ :!<command> run the shell command <command>\n\
hFlush stdout
hSetBuffering stdout NoBuffering
+ dflags <- getDynFlags
+
-- link in the available packages
pkgs <- getPackageInfo
initLinker
- linkPackages cmdline_libs pkgs
-
- dflags <- getDynFlags
+ linkPackages dflags cmdline_libs pkgs
(cmstate, maybe_hval)
<- cmCompileExpr cmstate dflags "IO.hSetBuffering IO.stdout IO.NoBuffering Prelude.>> IO.hSetBuffering IO.stderr IO.NoBuffering"
Just hval -> writeIORef flush_stdout (unsafeCoerce# hval :: IO ())
_ -> panic "interactiveUI:stdout"
+ -- We don't want the cmd line to buffer any input that might be
+ -- intended for the program, so unbuffer stdin.
+ hSetBuffering stdin NoBuffering
+
-- initial context is just the Prelude
cmstate <- cmSetContext cmstate dflags [] ["Prelude"]
Readline.initialize
#endif
- startGHCi (runGHCi paths)
+ startGHCi (runGHCi paths dflags)
GHCiState{ progname = "<interactive>",
args = [],
targets = paths,
return ()
-runGHCi :: [FilePath] -> GHCi ()
-runGHCi paths = do
+runGHCi :: [FilePath] -> DynFlags -> GHCi ()
+runGHCi paths dflags = do
read_dot_files <- io (readIORef v_Read_DotGHCi)
when (read_dot_files) $ do
loadModule (unwords paths)
-- enter the interactive loop
- interactiveLoop
+ is_tty <- io (hIsTerminalDevice stdin)
+ interactiveLoop is_tty
-- and finally, exit
- io $ do putStrLn "Leaving GHCi."
+ io $ do when (verbosity dflags > 0) $ putStrLn "Leaving GHCi."
-interactiveLoop = do
+interactiveLoop is_tty = do
-- ignore ^C exceptions caught here
- ghciHandleDyn (\e -> case e of Interrupted -> ghciUnblock interactiveLoop
- _other -> return ()) $ do
+ ghciHandleDyn (\e -> case e of
+ Interrupted -> ghciUnblock (interactiveLoop is_tty)
+ _other -> return ()) $ do
-- read commands from stdin
#if HAVE_READLINE_HEADERS && HAVE_READLINE_LIBS
- readlineLoop
+ if (is_tty)
+ then readlineLoop
+ else fileLoop stdin False -- turn off prompt for non-TTY input
#else
fileLoop stdin True
#endif
checkPerms :: String -> IO Bool
checkPerms name =
- handle (\_ -> return False) $ do
+ DriverUtil.handle (\_ -> return False) $ do
#ifdef mingw32_TARGET_OS
doesFileExist name
#else
fileLoop :: Handle -> Bool -> GHCi ()
fileLoop hdl prompt = do
- st <- getGHCiState
- (mod,imports) <- io (cmGetContext (cmstate st))
+ cmstate <- getCmState
+ (mod,imports) <- io (cmGetContext cmstate)
when prompt (io (putStr (mkPrompt mod imports)))
l <- io (IO.try (hGetLine hdl))
case l of
stringLoop :: [String] -> GHCi ()
stringLoop [] = return ()
stringLoop (s:ss) = do
- st <- getGHCiState
case remove_spaces s of
"" -> stringLoop ss
l -> do quit <- runCommand l
if quit then return () else stringLoop ss
mkPrompt toplevs exports
- = concat (intersperse "," toplevs)
- ++ (if not (null exports)
- then "[" ++ concat (intersperse "," exports) ++ "]"
- else "")
- ++ "> "
+ = concat (intersperse " " (toplevs ++ map ('*':) exports)) ++ "> "
#if HAVE_READLINE_HEADERS && HAVE_READLINE_LIBS
readlineLoop :: GHCi ()
readlineLoop = do
- st <- getGHCiState
- (mod,imports) <- io (cmGetContext (cmstate st))
+ cmstate <- getCmState
+ (mod,imports) <- io (cmGetContext cmstate)
io yield
l <- io (readline (mkPrompt mod imports))
case l of
case result of
CmRunFailed -> return []
CmRunException e -> showException e >> return []
- CmRunDeadlocked -> io (putStrLn "Deadlocked.") >> return []
CmRunOk names -> return names
-- possibly print the type and revert CAFs after evaluating an expression
finishEvalExpr names
= do b <- isOptionSet ShowType
- st <- getGHCiState
- when b (mapM_ (showTypeOfName (cmstate st)) names)
+ cmstate <- getCmState
+ when b (mapM_ (showTypeOfName cmstate) names)
b <- isOptionSet RevertCAFs
io (when b revertCAFs)
info "" = throwDyn (CmdLineError "syntax: `:i <thing-you-want-info-about>'")
info s = do
let names = words s
- state <- getGHCiState
+ init_cms <- getCmState
dflags <- io getDynFlags
let
infoThings cms [] = return cms
infoThings cms (name:names) = do
- (cms, unqual, stuff) <- io (cmInfoThing cms dflags name)
+ (cms, stuff) <- io (cmInfoThing cms dflags name)
io (putStrLn (showSDocForUser unqual (
vcat (intersperse (text "") (map showThing stuff))))
)
infoThings cms names
+ unqual = cmGetPrintUnqual init_cms
+
showThing (ty_thing, fixity)
= vcat [ text "-- " <> showTyThing ty_thing,
showFixity fixity (getName ty_thing),
= empty
where loc = nameSrcLoc name
- cms <- infoThings (cmstate state) names
- setGHCiState state{ cmstate = cms }
+ cms <- infoThings init_cms names
+ setCmState cms
return ()
addModule :: String -> GHCi ()
(cmstate1, ok, mods) <- io (cmLoadModules (cmstate state) dflags graph)
setGHCiState state{ cmstate = cmstate1, targets = new_targets }
setContextAfterLoad mods
- modulesLoadedMsg ok mods
+ modulesLoadedMsg ok mods dflags
changeDirectory :: String -> GHCi ()
changeDirectory ('~':d) = do
let new_expr = '(' : definition ++ ") :: String -> IO String"
-- compile the expression
- st <- getGHCiState
+ cms <- getCmState
dflags <- io getDynFlags
- (new_cmstate, maybe_hv) <- io (cmCompileExpr (cmstate st) dflags new_expr)
- setGHCiState st{cmstate = new_cmstate}
+ (new_cmstate, maybe_hv) <- io (cmCompileExpr cms dflags new_expr)
+ setCmState new_cmstate
case maybe_hv of
Nothing -> return ()
Just hv -> io (writeIORef commands --
io (writeIORef commands (filter ((/= macro_name) . fst) cmds))
-importModules :: String -> GHCi ()
-importModules str = return ()
-
-
loadModule :: String -> GHCi ()
loadModule str = timeIt (loadModule' str)
setGHCiState state{ cmstate = cmstate2, targets = files }
setContextAfterLoad mods
- modulesLoadedMsg ok mods
+ modulesLoadedMsg ok mods dflags
reloadModule :: String -> GHCi ()
<- io (cmLoadModules (cmstate state) dflags graph)
setGHCiState state{ cmstate=cmstate1 }
setContextAfterLoad mods
- modulesLoadedMsg ok mods
+ modulesLoadedMsg ok mods dflags
reloadModule _ = noArgs ":reload"
setContextAfterLoad [] = setContext prel
-setContextAfterLoad (m:_) = setContext m
-
-modulesLoadedMsg ok mods = do
- let mod_commas
+setContextAfterLoad (m:_) = do
+ cmstate <- getCmState
+ b <- io (cmModuleIsInterpreted cmstate m)
+ if b then setContext m else setContext ('*':m)
+
+modulesLoadedMsg ok mods dflags =
+ when (verbosity dflags > 0) $ do
+ let mod_commas
| null mods = text "none."
| otherwise = hsep (
punctuate comma (map text mods)) <> text "."
- case ok of
+ case ok of
False ->
io (putStrLn (showSDoc (text "Failed, modules loaded: " <> mod_commas)))
True ->
typeOfExpr :: String -> GHCi ()
typeOfExpr str
- = do st <- getGHCiState
+ = do cms <- getCmState
dflags <- io getDynFlags
- (new_cmstate, maybe_tystr) <- io (cmTypeOfExpr (cmstate st) dflags str)
- setGHCiState st{cmstate = new_cmstate}
+ (new_cmstate, maybe_tystr) <- io (cmTypeOfExpr cms dflags str)
+ setCmState new_cmstate
case maybe_tystr of
Nothing -> return ()
Just tystr -> io (putStrLn tystr)
shellEscape str = io (system str >> return False)
-----------------------------------------------------------------------------
+-- Browing a module's contents
+
+browseCmd :: String -> GHCi ()
+browseCmd m =
+ case words m of
+ ['*':m] | looksLikeModuleName m -> browseModule m True
+ [m] | looksLikeModuleName m -> browseModule m False
+ _ -> throwDyn (CmdLineError "syntax: :browse <module>")
+
+browseModule m exports_only = do
+ cms <- getCmState
+ dflags <- io getDynFlags
+
+ is_interpreted <- io (cmModuleIsInterpreted cms m)
+ when (not is_interpreted && not exports_only) $
+ throwDyn (CmdLineError ("module `" ++ m ++ "' is not interpreted"))
+
+ -- temporarily set the context to the module we're interested in,
+ -- just so we can get an appropriate PrintUnqualified
+ (as,bs) <- io (cmGetContext cms)
+ cms1 <- io (if exports_only then cmSetContext cms dflags [] [prel,m]
+ else cmSetContext cms dflags [m] [])
+ cms2 <- io (cmSetContext cms1 dflags as bs)
+
+ (cms3, things) <- io (cmBrowseModule cms2 dflags m exports_only)
+
+ setCmState cms3
+
+ let unqual = cmGetPrintUnqual cms1 -- NOTE: cms1 with the new context
+
+ things' = filter wantToSee things
+
+ wantToSee (AnId id) = not (isDataConId id || isDataConWrapId id)
+ wantToSee _ = True
+
+ thing_names = map getName things
+
+ thingDecl thing@(AnId id) = ifaceTyThing thing
+
+ thingDecl thing@(AClass c) =
+ let rn_decl = ifaceTyThing thing in
+ case rn_decl of
+ ClassDecl { tcdSigs = cons } ->
+ rn_decl{ tcdSigs = filter methodIsVisible cons }
+ other -> other
+ where
+ methodIsVisible (ClassOpSig n _ _ _) = n `elem` thing_names
+
+ thingDecl thing@(ATyCon t) =
+ let rn_decl = ifaceTyThing thing in
+ case rn_decl of
+ TyData { tcdCons = cons } ->
+ rn_decl{ tcdCons = filter conIsVisible cons }
+ other -> other
+ where
+ conIsVisible (ConDecl n _ _ _ _ _) = n `elem` thing_names
+
+ io (putStrLn (showSDocForUser unqual (
+ vcat (map (ppr . thingDecl) things')))
+ )
+
+ where
+
+-----------------------------------------------------------------------------
-- Setting the module context
setContext str
- | all sensible mods = newContext mods -- default is to set the empty context
- | all plusminus mods = adjustContext mods
- | otherwise
- = throwDyn (CmdLineError "syntax: :module M1 .. Mn | :module [+/-]M1 ... [+/-]Mn")
- where
- mods = words str
+ | all sensible mods = fn mods
+ | otherwise = throwDyn (CmdLineError "syntax: :module [+/-] [*]M1 ... [*]Mn")
+ where
+ (fn, mods) = case str of
+ '+':stuff -> (addToContext, words stuff)
+ '-':stuff -> (removeFromContext, words stuff)
+ stuff -> (newContext, words stuff)
- sensible (c:cs) = isUpper c && all isAlphaNumEx cs
- isAlphaNumEx c = isAlphaNum c || c == '_'
-
- plusminus ('-':mod) = sensible mod
- plusminus ('+':mod) = sensible mod
- plusminus _ = False
+ sensible ('*':m) = looksLikeModuleName m
+ sensible m = looksLikeModuleName m
newContext mods = do
- state@GHCiState{cmstate=cmstate} <- getGHCiState
+ cms <- getCmState
dflags <- io getDynFlags
-
- let separate [] as bs = return (as,bs)
- separate (m:ms) as bs = do
- b <- io (cmModuleIsInterpreted cmstate m)
- if b then separate ms (m:as) bs
- else separate ms as (m:bs)
-
- (as,bs) <- separate mods [] []
+ (as,bs) <- separate cms mods [] []
let bs' = if null as && prel `notElem` bs then prel:bs else bs
- cmstate' <- io (cmSetContext cmstate dflags as bs')
- setGHCiState state{cmstate=cmstate'}
-
+ cms' <- io (cmSetContext cms dflags as bs')
+ setCmState cms'
+
+separate cmstate [] as bs = return (as,bs)
+separate cmstate (('*':m):ms) as bs = separate cmstate ms as (m:bs)
+separate cmstate (m:ms) as bs = do
+ b <- io (cmModuleIsInterpreted cmstate m)
+ if b then separate cmstate ms (m:as) bs
+ else throwDyn (CmdLineError ("module `" ++ m ++ "' is not interpreted"))
+
prel = "Prelude"
-adjustContext mods = do
- state@GHCiState{cmstate=cmstate} <- getGHCiState
+
+addToContext mods = do
+ cms <- getCmState
dflags <- io getDynFlags
+ (as,bs) <- io (cmGetContext cms)
- let adjust [] as bs = return (as,bs)
- adjust (('-':m) : ms) as bs
- | m `elem` as = adjust ms (delete m as) bs
- | m `elem` bs = adjust ms as (delete m bs)
- | otherwise = throwDyn (CmdLineError ("module `" ++ m ++ "' is not currently in scope"))
- adjust (('+':m) : ms) as bs
- | m `elem` as || m `elem` bs = adjust ms as bs -- continue silently
- | otherwise = do b <- io (cmModuleIsInterpreted cmstate m)
- if b then adjust ms (m:as) bs
- else adjust ms as (m:bs)
-
- (as,bs) <- io (cmGetContext cmstate)
- (as,bs) <- adjust mods as bs
- let bs' = if null as && prel `notElem` bs then prel:bs else bs
- cmstate' <- io (cmSetContext cmstate dflags as bs')
- setGHCiState state{cmstate=cmstate'}
+ (as',bs') <- separate cms mods [] []
+
+ let as_to_add = as' \\ (as ++ bs)
+ bs_to_add = bs' \\ (as ++ bs)
+
+ cms' <- io (cmSetContext cms dflags
+ (as ++ as_to_add) (bs ++ bs_to_add))
+ setCmState cms'
+
+
+removeFromContext mods = do
+ cms <- getCmState
+ dflags <- io getDynFlags
+ (as,bs) <- io (cmGetContext cms)
+
+ (as_to_remove,bs_to_remove) <- separate cms mods [] []
+
+ let as' = as \\ (as_to_remove ++ bs_to_remove)
+ bs' = bs \\ (as_to_remove ++ bs_to_remove)
+
+ cms' <- io (cmSetContext cms dflags as' bs')
+ setCmState cms'
----------------------------------------------------------------------------
-- Code for `:set'
flushPackageCache pkgs
new_pkg_info <- getPackageDetails new_pkgs
- mapM_ linkPackage (reverse new_pkg_info)
+ mapM_ (linkPackage dflags) (reverse new_pkg_info)
+
+-----------------------------------------------------------------------------
+-- code for `:show'
+
+showCmd str =
+ case words str of
+ ["modules" ] -> showModules
+ ["bindings"] -> showBindings
+ _ -> throwDyn (CmdLineError "syntax: :show [modules|bindings]")
+
+showModules = do
+ cms <- getCmState
+ let mg = cmGetModuleGraph cms
+ ls = cmGetLinkables cms
+ maybe_linkables = map (findModuleLinkable_maybe ls)
+ (map (moduleName.ms_mod) mg)
+ zipWithM showModule mg maybe_linkables
+ return ()
+
+showModule :: ModSummary -> Maybe Linkable -> GHCi ()
+showModule m (Just l) = do
+ io (putStrLn (showModMsg (isObjectLinkable l) (ms_mod m) (ms_location m)))
+showModule _ Nothing = panic "missing linkable"
+
+showBindings = do
+ cms <- getCmState
+ let
+ unqual = cmGetPrintUnqual cms
+ showBinding b = putStrLn (showSDocForUser unqual (ppr (ifaceTyThing b)))
+
+ io (mapM showBinding (cmGetBindings cms))
+ return ()
-----------------------------------------------------------------------------
-- GHCi monad
getGHCiState = GHCi $ \r -> readIORef r
setGHCiState s = GHCi $ \r -> writeIORef r s
+-- for convenience...
+getCmState = getGHCiState >>= return . cmstate
+setCmState cms = do s <- getGHCiState; setGHCiState s{cmstate=cms}
+
isOptionSet :: GHCiOption -> GHCi Bool
isOptionSet opt
= do st <- getGHCiState
showLS (Left nm) = "(static) " ++ nm
showLS (Right nm) = "(dynamic) " ++ nm
-linkPackages :: [LibrarySpec] -> [PackageConfig] -> IO ()
-linkPackages cmdline_lib_specs pkgs
- = do mapM_ linkPackage (reverse pkgs)
+linkPackages :: DynFlags -> [LibrarySpec] -> [PackageConfig] -> IO ()
+linkPackages dflags cmdline_lib_specs pkgs
+ = do mapM_ (linkPackage dflags) (reverse pkgs)
lib_paths <- readIORef v_Library_paths
- mapM_ (preloadLib lib_paths) cmdline_lib_specs
+ mapM_ (preloadLib dflags lib_paths) cmdline_lib_specs
if (null cmdline_lib_specs)
then return ()
- else do putStr "final link ... "
+ else do maybePutStr dflags "final link ... "
ok <- resolveObjs
- if ok then putStrLn "done."
+ if ok then maybePutStrLn dflags "done."
else throwDyn (InstallationError
"linking extra libraries/objects failed")
where
- preloadLib :: [String] -> LibrarySpec -> IO ()
- preloadLib lib_paths lib_spec
- = do putStr ("Loading object " ++ showLS lib_spec ++ " ... ")
+ preloadLib :: DynFlags -> [String] -> LibrarySpec -> IO ()
+ preloadLib dflags lib_paths lib_spec
+ = do maybePutStr dflags ("Loading object " ++ showLS lib_spec ++ " ... ")
case lib_spec of
Left static_ish
-> do b <- preload_static lib_paths static_ish
- putStrLn (if b then "done." else "not found")
+ maybePutStrLn dflags (if b then "done."
+ else "not found")
Right dll_unadorned
-> -- We add "" to the set of paths to try, so that
-- if none of the real paths match, we force addDLL
case maybe_errstr of
Nothing -> return ()
Just mm -> preloadFailed mm lib_paths lib_spec
- putStrLn "done"
+ maybePutStrLn dflags "done"
preloadFailed :: String -> [String] -> LibrarySpec -> IO ()
preloadFailed sys_errmsg paths spec
- = do putStr ("failed.\nDynamic linker error message was:\n "
+ = do maybePutStr dflags
+ ("failed.\nDynamic linker error message was:\n "
++ sys_errmsg ++ "\nWhilst trying to load: "
++ showLS spec ++ "\nDirectories to search are:\n"
++ unlines (map (" "++) paths) )
= [ ]
# endif
-linkPackage :: PackageConfig -> IO ()
-linkPackage pkg
+linkPackage :: DynFlags -> PackageConfig -> IO ()
+linkPackage dflags pkg
| name pkg `elem` dont_load_these = return ()
| otherwise
= do
let sos_first | name pkg `elem` loaded_in_ghci = obj_libs
| otherwise = so_libs ++ obj_libs
- putStr ("Loading package " ++ name pkg ++ " ... ")
+ maybePutStr dflags ("Loading package " ++ name pkg ++ " ... ")
mapM loadClassified sos_first
- putStr "linking ... "
+ maybePutStr dflags "linking ... "
ok <- resolveObjs
- if ok then putStrLn "done."
+ if ok then maybePutStrLn dflags "done."
else panic ("can't load package `" ++ name pkg ++ "'")
where
isRight (Right _) = True
int allocs <+> text "bytes")))
-----------------------------------------------------------------------------
+-- utils
+
+looksLikeModuleName [] = False
+looksLikeModuleName (c:cs) = isUpper c && all isAlphaNumEx cs
+
+isAlphaNumEx c = isAlphaNum c || c == '_'
+
+maybePutStr dflags s | verbosity dflags > 0 = putStr s
+ | otherwise = return ()
+
+maybePutStrLn dflags s | verbosity dflags > 0 = putStrLn s
+ | otherwise = return ()
+
+-----------------------------------------------------------------------------
-- reverting CAFs
foreign import revertCAFs :: IO () -- make it "safe", just in case
projects / ghc-hetmet.git / blobdiff