\begin{code}
module HscMain (
- HscResult(..), hscMain, newHscEnv
+ HscResult(..),
+ hscMain, newHscEnv, hscCmmFile,
+ hscFileCheck,
+ hscParseIdentifier,
#ifdef GHCI
- , hscStmt, hscTcExpr, hscThing,
- , compileExpr
+ hscStmt, hscTcExpr, hscKcType,
+ hscGetInfo, GetInfoResult,
+ compileExpr,
#endif
) where
#include "HsVersions.h"
#ifdef GHCI
-import HsSyn ( Stmt(..), LStmt, LHsExpr )
-import IfaceSyn ( IfaceDecl )
+import HsSyn ( Stmt(..), LHsExpr )
+import IfaceSyn ( IfaceDecl, IfaceInst )
+import Module ( Module )
import CodeOutput ( outputForeignStubs )
import ByteCodeGen ( byteCodeGen, coreExprToBCOs )
import Linker ( HValue, linkExpr )
import TidyPgm ( tidyCoreExpr )
import CorePrep ( corePrepExpr )
import Flattening ( flattenExpr )
-import TcRnDriver ( tcRnStmt, tcRnExpr, tcRnThing )
-import RdrName ( RdrName, GlobalRdrEnv )
+import TcRnDriver ( tcRnStmt, tcRnExpr, tcRnGetInfo, GetInfoResult, tcRnType )
+import RdrName ( rdrNameOcc )
+import OccName ( occNameUserString )
import Type ( Type )
import PrelNames ( iNTERACTIVE )
-import StringBuffer ( stringToStringBuffer )
-import SrcLoc ( noSrcLoc, Located(..) )
-import Var ( Id )
-import Name ( Name )
+import Kind ( Kind )
import CoreLint ( lintUnfolding )
import DsMeta ( templateHaskellNames )
import BasicTypes ( Fixity )
+import SrcLoc ( SrcLoc, noSrcLoc )
#endif
-import StringBuffer ( hGetStringBuffer )
+import Var ( Id )
+import Module ( emptyModuleEnv )
+import RdrName ( GlobalRdrEnv, RdrName )
+import HsSyn ( HsModule, LHsBinds, LStmt, LHsType )
+import SrcLoc ( Located(..) )
+import StringBuffer ( hGetStringBuffer, stringToStringBuffer )
import Parser
import Lexer ( P(..), ParseResult(..), mkPState )
import SrcLoc ( mkSrcLoc )
import TcRnDriver ( tcRnModule, tcRnExtCore )
+import TcRnTypes ( TcGblEnv(..) )
import TcIface ( typecheckIface )
import IfaceEnv ( initNameCache )
import LoadIface ( ifaceStats, initExternalPackageState )
import PrelInfo ( wiredInThings, basicKnownKeyNames )
-import RdrName ( GlobalRdrEnv )
import MkIface ( checkOldIface, mkIface )
import Desugar
import Flattening ( flatten )
import Name ( Name, NamedThing(..) )
import SimplStg ( stg2stg )
import CodeGen ( codeGen )
+import CmmParse ( parseCmmFile )
import CodeOutput ( codeOutput )
-import CmdLineOpts
-import DriverPhases ( isExtCoreFilename )
-import ErrUtils ( dumpIfSet, dumpIfSet_dyn, showPass, printError )
+import DynFlags
+import DriverPhases ( HscSource(..) )
+import ErrUtils
import UniqSupply ( mkSplitUniqSupply )
import Outputable
import MkExternalCore ( emitExternalCore )
import ParserCore
import ParserCoreUtils
-import Module ( Module, ModLocation(..), showModMsg )
import FastString
import Maybes ( expectJust )
+import StringBuffer ( StringBuffer )
+import Bag ( unitBag, emptyBag )
import Monad ( when )
-import Maybe ( isJust, fromJust )
+import Maybe ( isJust )
import IO
import DATA_IOREF ( newIORef, readIORef )
\end{code}
%************************************************************************
\begin{code}
-newHscEnv :: GhciMode -> DynFlags -> IO HscEnv
-newHscEnv ghci_mode dflags
+newHscEnv :: DynFlags -> IO HscEnv
+newHscEnv dflags
= do { eps_var <- newIORef initExternalPackageState
; us <- mkSplitUniqSupply 'r'
; nc_var <- newIORef (initNameCache us knownKeyNames)
- ; return (HscEnv { hsc_mode = ghci_mode,
- hsc_dflags = dflags,
+ ; fc_var <- newIORef emptyModuleEnv
+ ; return (HscEnv { hsc_dflags = dflags,
+ hsc_targets = [],
+ hsc_mod_graph = [],
+ hsc_IC = emptyInteractiveContext,
hsc_HPT = emptyHomePackageTable,
hsc_EPS = eps_var,
- hsc_NC = nc_var } ) }
+ hsc_NC = nc_var,
+ hsc_FC = fc_var } ) }
knownKeyNames :: [Name] -- Put here to avoid loops involving DsMeta,
\begin{code}
data HscResult
-- Compilation failed
- = HscFail
+ = HscFail
+
+ -- In IDE mode: we just do the static/dynamic checks
+ | HscChecked (Located (HsModule RdrName)) (Maybe (LHsBinds Id, GlobalRdrEnv))
-- Concluded that it wasn't necessary
| HscNoRecomp ModDetails -- new details (HomeSymbolTable additions)
-- Did recompilation
| HscRecomp ModDetails -- new details (HomeSymbolTable additions)
- (Maybe GlobalRdrEnv)
ModIface -- new iface (if any compilation was done)
Bool -- stub_h exists
Bool -- stub_c exists
(Maybe CompiledByteCode)
+
+-- What to do when we have compiler error or warning messages
+type MessageAction = Messages -> IO ()
+
-- no errors or warnings; the individual passes
-- (parse/rename/typecheck) print messages themselves
hscMain
:: HscEnv
- -> Module
- -> ModLocation -- location info
- -> Bool -- True <=> source unchanged
- -> Bool -- True <=> have an object file (for msgs only)
- -> Maybe ModIface -- old interface, if available
+ -> MessageAction -- What to do with errors/warnings
+ -> ModSummary
+ -> Bool -- True <=> source unchanged
+ -> Bool -- True <=> have an object file (for msgs only)
+ -> Maybe ModIface -- Old interface, if available
-> IO HscResult
-hscMain hsc_env mod location
+hscMain hsc_env msg_act mod_summary
source_unchanged have_object maybe_old_iface
= do {
(recomp_reqd, maybe_checked_iface) <-
- _scc_ "checkOldIface"
- checkOldIface hsc_env mod
- (ml_hi_file location)
+ {-# SCC "checkOldIface" #-}
+ checkOldIface hsc_env mod_summary
source_unchanged maybe_old_iface;
let no_old_iface = not (isJust maybe_checked_iface)
what_next | recomp_reqd || no_old_iface = hscRecomp
| otherwise = hscNoRecomp
- ; what_next hsc_env have_object
- mod location maybe_checked_iface
+ ; what_next hsc_env msg_act mod_summary have_object
+ maybe_checked_iface
}
+------------------------------
-- hscNoRecomp definitely expects to have the old interface available
-hscNoRecomp hsc_env have_object
- mod location (Just old_iface)
- | hsc_mode hsc_env == OneShot
+hscNoRecomp hsc_env msg_act mod_summary
+ have_object (Just old_iface)
+ | isOneShot (ghcMode (hsc_dflags hsc_env))
= do {
- when (verbosity (hsc_dflags hsc_env) > 0) $
- hPutStrLn stderr "compilation IS NOT required";
+ compilationProgressMsg (hsc_dflags hsc_env) $
+ "compilation IS NOT required";
dumpIfaceStats hsc_env ;
let { bomb = panic "hscNoRecomp:OneShot" };
return (HscNoRecomp bomb bomb)
}
| otherwise
- = do {
- when (verbosity (hsc_dflags hsc_env) >= 1) $
- hPutStrLn stderr ("Skipping " ++
- showModMsg have_object mod location);
+ = do { compilationProgressMsg (hsc_dflags hsc_env) $
+ ("Skipping " ++ showModMsg have_object mod_summary)
- new_details <- _scc_ "tcRnIface"
+ ; new_details <- {-# SCC "tcRnIface" #-}
typecheckIface hsc_env old_iface ;
- dumpIfaceStats hsc_env ;
+ ; dumpIfaceStats hsc_env
- return (HscNoRecomp new_details old_iface)
- }
+ ; return (HscNoRecomp new_details old_iface)
+ }
-hscRecomp hsc_env have_object
- mod location maybe_checked_iface
- = do {
- -- what target are we shooting for?
- ; let one_shot = hsc_mode hsc_env == OneShot
- ; let dflags = hsc_dflags hsc_env
- ; let toInterp = dopt_HscLang dflags == HscInterpreted
- ; let toCore = isJust (ml_hs_file location) &&
- isExtCoreFilename (fromJust (ml_hs_file location))
+------------------------------
+hscRecomp hsc_env msg_act mod_summary
+ have_object maybe_checked_iface
+ = case ms_hsc_src mod_summary of
+ HsSrcFile -> do
+ front_res <- hscFileFrontEnd hsc_env msg_act mod_summary
+ hscBackEnd hsc_env mod_summary maybe_checked_iface front_res
+
+ HsBootFile -> do
+ front_res <- hscFileFrontEnd hsc_env msg_act mod_summary
+ hscBootBackEnd hsc_env mod_summary maybe_checked_iface front_res
+
+ ExtCoreFile -> do
+ front_res <- hscCoreFrontEnd hsc_env msg_act mod_summary
+ hscBackEnd hsc_env mod_summary maybe_checked_iface front_res
+
+hscCoreFrontEnd hsc_env msg_act mod_summary = do {
+ -------------------
+ -- PARSE
+ -------------------
+ ; inp <- readFile (expectJust "hscCoreFrontEnd" (ms_hspp_file mod_summary))
+ ; case parseCore inp 1 of
+ FailP s -> putMsg s{-ToDo: wrong-} >> return Nothing
+ OkP rdr_module -> do {
+
+ -------------------
+ -- RENAME and TYPECHECK
+ -------------------
+ ; (tc_msgs, maybe_tc_result) <- {-# SCC "TypeCheck" #-}
+ tcRnExtCore hsc_env rdr_module
+ ; msg_act tc_msgs
+ ; case maybe_tc_result of
+ Nothing -> return Nothing
+ Just mod_guts -> return (Just mod_guts) -- No desugaring to do!
+ }}
+
- ; when (not one_shot && verbosity dflags >= 1) $
- hPutStrLn stderr ("Compiling " ++
- showModMsg (not toInterp) mod location);
+hscFileFrontEnd hsc_env msg_act mod_summary = do {
+ -------------------
+ -- DISPLAY PROGRESS MESSAGE
+ -------------------
+ let one_shot = isOneShot (ghcMode (hsc_dflags hsc_env))
+ ; let dflags = hsc_dflags hsc_env
+ ; let toInterp = hscTarget dflags == HscInterpreted
+ ; when (not one_shot) $
+ compilationProgressMsg dflags $
+ ("Compiling " ++ showModMsg (not toInterp) mod_summary)
- ; front_res <- if toCore then
- hscCoreFrontEnd hsc_env location
- else
- hscFrontEnd hsc_env location
+ -------------------
+ -- PARSE
+ -------------------
+ ; let hspp_file = expectJust "hscFileFrontEnd" (ms_hspp_file mod_summary)
+ hspp_buf = ms_hspp_buf mod_summary
- ; case front_res of
- Left flure -> return flure;
- Right ds_result -> do {
+ ; maybe_parsed <- myParseModule (hsc_dflags hsc_env) hspp_file hspp_buf
+ ; case maybe_parsed of {
+ Left err -> do { msg_act (unitBag err, emptyBag)
+ ; return Nothing } ;
+ Right rdr_module -> do {
+
+ -------------------
+ -- RENAME and TYPECHECK
+ -------------------
+ (tc_msgs, maybe_tc_result)
+ <- {-# SCC "Typecheck-Rename" #-}
+ tcRnModule hsc_env (ms_hsc_src mod_summary) rdr_module
- -- OMITTED:
- -- ; seqList imported_modules (return ())
+ ; msg_act tc_msgs
+ ; case maybe_tc_result of {
+ Nothing -> return Nothing ;
+ Just tc_result -> do {
+
+ -------------------
+ -- DESUGAR
+ -------------------
+ ; (warns, maybe_ds_result) <- {-# SCC "DeSugar" #-}
+ deSugar hsc_env tc_result
+ ; msg_act (warns, emptyBag)
+ ; case maybe_ds_result of
+ Nothing -> return Nothing
+ Just ds_result -> return (Just ds_result)
+ }}}}}
+
+------------------------------
+
+hscFileCheck :: HscEnv -> MessageAction -> ModSummary -> IO HscResult
+hscFileCheck hsc_env msg_act mod_summary = do {
+ -------------------
+ -- PARSE
+ -------------------
+ ; let hspp_file = expectJust "hscFileFrontEnd" (ms_hspp_file mod_summary)
+ hspp_buf = ms_hspp_buf mod_summary
+
+ ; maybe_parsed <- myParseModule (hsc_dflags hsc_env) hspp_file hspp_buf
+
+ ; case maybe_parsed of {
+ Left err -> do { msg_act (unitBag err, emptyBag)
+ ; return HscFail } ;
+ Right rdr_module -> do {
+
+ -------------------
+ -- RENAME and TYPECHECK
+ -------------------
+ (tc_msgs, maybe_tc_result)
+ <- _scc_ "Typecheck-Rename"
+ tcRnModule hsc_env (ms_hsc_src mod_summary) rdr_module
+
+ ; msg_act tc_msgs
+ ; case maybe_tc_result of {
+ Nothing -> return (HscChecked rdr_module Nothing);
+ Just tc_result -> return (HscChecked rdr_module
+ (Just (tcg_binds tc_result,
+ tcg_rdr_env tc_result)))
+ }}}}
+
+------------------------------
+hscBootBackEnd :: HscEnv -> ModSummary -> Maybe ModIface -> Maybe ModGuts -> IO HscResult
+-- For hs-boot files, there's no code generation to do
+
+hscBootBackEnd hsc_env mod_summary maybe_checked_iface Nothing
+ = return HscFail
+hscBootBackEnd hsc_env mod_summary maybe_checked_iface (Just ds_result)
+ = do { final_iface <- {-# SCC "MkFinalIface" #-}
+ mkIface hsc_env (ms_location mod_summary)
+ maybe_checked_iface ds_result
+
+ ; let { final_details = ModDetails { md_types = mg_types ds_result,
+ md_insts = mg_insts ds_result,
+ md_rules = mg_rules ds_result } }
+ -- And the answer is ...
+ ; dumpIfaceStats hsc_env
+
+ ; return (HscRecomp final_details
+ final_iface
+ False False Nothing)
+ }
+
+------------------------------
+hscBackEnd :: HscEnv -> ModSummary -> Maybe ModIface -> Maybe ModGuts -> IO HscResult
+
+hscBackEnd hsc_env mod_summary maybe_checked_iface Nothing
+ = return HscFail
+
+hscBackEnd hsc_env mod_summary maybe_checked_iface (Just ds_result)
+ = do { -- OMITTED:
+ -- ; seqList imported_modules (return ())
+
+ let one_shot = isOneShot (ghcMode dflags)
+ dflags = hsc_dflags hsc_env
-------------------
-- FLATTENING
-------------------
- ; flat_result <- _scc_ "Flattening"
+ ; flat_result <- {-# SCC "Flattening" #-}
flatten hsc_env ds_result
-------------------
-- SIMPLIFY
-------------------
- ; simpl_result <- _scc_ "Core2Core"
+ ; simpl_result <- {-# SCC "Core2Core" #-}
core2core hsc_env flat_result
-------------------
-- TIDY
-------------------
- ; tidy_result <- _scc_ "CoreTidy"
+ ; tidy_result <- {-# SCC "CoreTidy" #-}
tidyCorePgm hsc_env simpl_result
-- Emit external core
-- This has to happen *after* code gen so that the back-end
-- info has been set. Not yet clear if it matters waiting
-- until after code output
- ; new_iface <- _scc_ "MkFinalIface"
- mkIface hsc_env location
+ ; new_iface <- {-# SCC "MkFinalIface" #-}
+ mkIface hsc_env (ms_location mod_summary)
maybe_checked_iface tidy_result
-
-- Space leak reduction: throw away the new interface if
-- we're in one-shot mode; we won't be needing it any
-- more.
; final_iface <-
if one_shot then return (error "no final iface")
else return new_iface
- ; let { final_globals | one_shot = Nothing
- | otherwise = Just $! (mg_rdr_env tidy_result) }
- ; final_globals `seq` return ()
-- Build the final ModDetails (except in one-shot mode, where
-- we won't need this information after compilation).
-------------------
-- CONVERT TO STG and COMPLETE CODE GENERATION
; (stub_h_exists, stub_c_exists, maybe_bcos)
- <- hscBackEnd dflags tidy_result
+ <- hscCodeGen dflags tidy_result
-- And the answer is ...
; dumpIfaceStats hsc_env
; return (HscRecomp final_details
- final_globals
final_iface
stub_h_exists stub_c_exists
maybe_bcos)
- }}
-
-hscCoreFrontEnd hsc_env location = do {
- -------------------
- -- PARSE
- -------------------
- ; inp <- readFile (expectJust "hscCoreFrontEnd:hspp" (ml_hspp_file location))
- ; case parseCore inp 1 of
- FailP s -> hPutStrLn stderr s >> return (Left HscFail);
- OkP rdr_module -> do {
-
- -------------------
- -- RENAME and TYPECHECK
- -------------------
- ; maybe_tc_result <- _scc_ "TypeCheck"
- tcRnExtCore hsc_env rdr_module
- ; case maybe_tc_result of {
- Nothing -> return (Left HscFail);
- Just mod_guts -> return (Right mod_guts)
- -- No desugaring to do!
- }}}
-
-
-hscFrontEnd hsc_env location = do {
- -------------------
- -- PARSE
- -------------------
- ; maybe_parsed <- myParseModule (hsc_dflags hsc_env)
- (expectJust "hscFrontEnd:hspp" (ml_hspp_file location))
-
- ; case maybe_parsed of {
- Nothing -> return (Left HscFail);
- Just rdr_module -> do {
-
- -------------------
- -- RENAME and TYPECHECK
- -------------------
- ; maybe_tc_result <- _scc_ "Typecheck-Rename"
- tcRnModule hsc_env rdr_module
- ; case maybe_tc_result of {
- Nothing -> return (Left HscFail);
- Just tc_result -> do {
+ }
- -------------------
- -- DESUGAR
- -------------------
- ; maybe_ds_result <- _scc_ "DeSugar"
- deSugar hsc_env tc_result
- ; case maybe_ds_result of
- Nothing -> return (Left HscFail);
- Just ds_result -> return (Right ds_result);
- }}}}}
-hscBackEnd dflags
+hscCodeGen dflags
ModGuts{ -- This is the last use of the ModGuts in a compilation.
-- From now on, we just use the bits we need.
mg_module = this_mod,
-------------------
-- PREPARE FOR CODE GENERATION
-- Do saturation and convert to A-normal form
- prepd_binds <- _scc_ "CorePrep"
+ prepd_binds <- {-# SCC "CorePrep" #-}
corePrepPgm dflags core_binds type_env;
- case dopt_HscLang dflags of
+ case hscTarget dflags of
HscNothing -> return (False, False, Nothing)
HscInterpreted ->
other ->
do
----------------- Convert to STG ------------------
- (stg_binds, cost_centre_info) <- _scc_ "CoreToStg"
+ (stg_binds, cost_centre_info) <- {-# SCC "CoreToStg" #-}
myCoreToStg dflags this_mod prepd_binds
------------------ Code generation ------------------
- abstractC <- _scc_ "CodeGen"
+ abstractC <- {-# SCC "CodeGen" #-}
codeGen dflags this_mod type_env foreign_stubs
dir_imps cost_centre_info stg_binds
}
-myParseModule dflags src_filename
- = do -------------------------- Parser ----------------
- showPass dflags "Parser"
- _scc_ "Parser" do
- buf <- hGetStringBuffer src_filename
+hscCmmFile :: DynFlags -> FilePath -> IO Bool
+hscCmmFile dflags filename = do
+ maybe_cmm <- parseCmmFile dflags filename
+ case maybe_cmm of
+ Nothing -> return False
+ Just cmm -> do
+ codeOutput dflags no_mod NoStubs noDependencies [cmm]
+ return True
+ where
+ no_mod = panic "hscCmmFile: no_mod"
+
+
+myParseModule dflags src_filename maybe_src_buf
+ = -------------------------- Parser ----------------
+ showPass dflags "Parser" >>
+ {-# SCC "Parser" #-} do
+
+ -- sometimes we already have the buffer in memory, perhaps
+ -- because we needed to parse the imports out of it, or get the
+ -- module name.
+ buf <- case maybe_src_buf of
+ Just b -> return b
+ Nothing -> hGetStringBuffer src_filename
let loc = mkSrcLoc (mkFastString src_filename) 1 0
case unP parseModule (mkPState buf loc dflags) of {
- PFailed span err -> do { printError span err ;
- return Nothing };
+ PFailed span err -> return (Left (mkPlainErrMsg span err));
POk _ rdr_module -> do {
dumpIfSet_dyn dflags Opt_D_source_stats "Source Statistics"
(ppSourceStats False rdr_module) ;
- return (Just rdr_module)
+ return (Right rdr_module)
-- ToDo: free the string buffer later.
}}
myCoreToStg dflags this_mod prepd_binds
= do
- stg_binds <- _scc_ "Core2Stg"
+ stg_binds <- {-# SCC "Core2Stg" #-}
coreToStg dflags prepd_binds
- (stg_binds2, cost_centre_info) <- _scc_ "Core2Stg"
+ (stg_binds2, cost_centre_info) <- {-# SCC "Core2Stg" #-}
stg2stg dflags this_mod stg_binds
return (stg_binds2, cost_centre_info)
#ifdef GHCI
hscStmt -- Compile a stmt all the way to an HValue, but don't run it
:: HscEnv
- -> InteractiveContext -- Context for compiling
-> String -- The statement
- -> IO (Maybe (InteractiveContext, [Name], HValue))
+ -> IO (Maybe (HscEnv, [Name], HValue))
-hscStmt hsc_env icontext stmt
+hscStmt hsc_env stmt
= do { maybe_stmt <- hscParseStmt (hsc_dflags hsc_env) stmt
; case maybe_stmt of {
- Nothing -> return Nothing ;
- Just parsed_stmt -> do {
+ Nothing -> return Nothing ; -- Parse error
+ Just Nothing -> return Nothing ; -- Empty line
+ Just (Just parsed_stmt) -> do { -- The real stuff
-- Rename and typecheck it
- maybe_tc_result
- <- tcRnStmt hsc_env icontext parsed_stmt
+ let icontext = hsc_IC hsc_env
+ ; maybe_tc_result <- tcRnStmt hsc_env icontext parsed_stmt
; case maybe_tc_result of {
Nothing -> return Nothing ;
(ic_type_env new_ic)
tc_expr
- ; return (Just (new_ic, bound_names, hval))
+ ; return (Just (hsc_env{ hsc_IC=new_ic }, bound_names, hval))
}}}}}
hscTcExpr -- Typecheck an expression (but don't run it)
:: HscEnv
- -> InteractiveContext -- Context for compiling
-> String -- The expression
-> IO (Maybe Type)
-hscTcExpr hsc_env icontext expr
+hscTcExpr hsc_env expr
= do { maybe_stmt <- hscParseStmt (hsc_dflags hsc_env) expr
+ ; let icontext = hsc_IC hsc_env
; case maybe_stmt of {
- Just (L _ (ExprStmt expr _))
+ Nothing -> return Nothing ; -- Parse error
+ Just (Just (L _ (ExprStmt expr _ _)))
-> tcRnExpr hsc_env icontext expr ;
- Just other -> do { hPutStrLn stderr ("not an expression: `" ++ expr ++ "'") ;
+ Just other -> do { errorMsg ("not an expression: `" ++ expr ++ "'") ;
+ return Nothing } ;
+ } }
+
+hscKcType -- Find the kind of a type
+ :: HscEnv
+ -> String -- The type
+ -> IO (Maybe Kind)
+
+hscKcType hsc_env str
+ = do { maybe_type <- hscParseType (hsc_dflags hsc_env) str
+ ; let icontext = hsc_IC hsc_env
+ ; case maybe_type of {
+ Just ty -> tcRnType hsc_env icontext ty ;
+ Just other -> do { errorMsg ("not an type: `" ++ str ++ "'") ;
return Nothing } ;
Nothing -> return Nothing } }
+#endif
\end{code}
\begin{code}
-hscParseStmt :: DynFlags -> String -> IO (Maybe (LStmt RdrName))
-hscParseStmt dflags str
- = do showPass dflags "Parser"
- _scc_ "Parser" do
+hscParseStmt :: DynFlags -> String -> IO (Maybe (Maybe (LStmt RdrName)))
+hscParseStmt = hscParseThing parseStmt
+
+hscParseType :: DynFlags -> String -> IO (Maybe (LHsType RdrName))
+hscParseType = hscParseThing parseType
+
+hscParseIdentifier :: DynFlags -> String -> IO (Maybe (Located RdrName))
+hscParseIdentifier = hscParseThing parseIdentifier
+
+hscParseThing :: Outputable thing
+ => Lexer.P thing
+ -> DynFlags -> String
+ -> IO (Maybe thing)
+ -- Nothing => Parse error (message already printed)
+ -- Just x => success
+hscParseThing parser dflags str
+ = showPass dflags "Parser" >>
+ {-# SCC "Parser" #-} do
buf <- stringToStringBuffer str
let loc = mkSrcLoc FSLIT("<interactive>") 1 0
- case unP parseStmt (mkPState buf loc dflags) of {
+ case unP parser (mkPState buf loc dflags) of {
PFailed span err -> do { printError span err;
return Nothing };
- -- no stmt: the line consisted of just space or comments
- POk _ Nothing -> return Nothing;
-
- POk _ (Just rdr_stmt) -> do {
+ POk _ thing -> do {
--ToDo: can't free the string buffer until we've finished this
-- compilation sweep and all the identifiers have gone away.
- dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr rdr_stmt);
- return (Just rdr_stmt)
+ dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr thing);
+ return (Just thing)
}}
-#endif
\end{code}
%************************************************************************
\begin{code}
#ifdef GHCI
-hscThing -- like hscStmt, but deals with a single identifier
+hscGetInfo -- like hscStmt, but deals with a single identifier
:: HscEnv
- -> InteractiveContext -- Context for compiling
-> String -- The identifier
- -> IO [(IfaceDecl, Fixity)]
+ -> IO [GetInfoResult]
-hscThing hsc_env ic str
- = do maybe_rdr_name <- myParseIdentifier (hsc_dflags hsc_env) str
+hscGetInfo hsc_env str
+ = do maybe_rdr_name <- hscParseIdentifier (hsc_dflags hsc_env) str
case maybe_rdr_name of {
Nothing -> return [];
Just (L _ rdr_name) -> do
- maybe_tc_result <- tcRnThing hsc_env ic rdr_name
+ maybe_tc_result <- tcRnGetInfo hsc_env (hsc_IC hsc_env) rdr_name
- case maybe_tc_result of {
- Nothing -> return [] ;
+ case maybe_tc_result of
+ Nothing -> return []
Just things -> return things
- }}
-
-myParseIdentifier dflags str
- = do buf <- stringToStringBuffer str
-
- let loc = mkSrcLoc FSLIT("<interactive>") 1 0
- case unP parseIdentifier (mkPState buf loc dflags) of
-
- PFailed span err -> do { printError span err;
- return Nothing }
-
- POk _ rdr_name -> return (Just rdr_name)
+ }
#endif
\end{code}
projects / ghc-hetmet.git / blobdiff